JP6920232B2 - Water treatment equipment with waterproof cover for drive unit - Google Patents

Description

The present invention relates to water treatment equipment installed in a relatively low area such as a sewage treatment plant or a pumping plant, and is particularly used for a dust remover, a belt conveyor, a screw conveyor, etc., which may be submerged in a flood or inundation. It relates to a water treatment facility provided with a suitable waterproof cover for a drive device.

Due to recent torrential rains, many water treatment facilities such as pumping stations and sewage treatment plants are submerged. In addition to the pump, for example, a dust remover is an equipment that is desired to be operated immediately after being submerged or submerged. That is, for example, when the pump is operated after being submerged in water, a large amount of dust collects on the screen installed on the upstream side of the pump and blocks the pump, so that the water does not flow and the operation of the pump may be hindered. Therefore, it is necessary to operate the dust remover together with the operation of the pump.

After being submerged in water, the dust remover can be operated as long as the drive device can be driven as long as the screen, rake, chain, sprocket, etc. are used to remove debris that interferes with operation. Therefore, there is an increasing demand for protecting the drive device from inoperability due to submersion.

As a conventional measure for preventing submersion, a method is known in which the drive device is installed at a higher position than usual by hanging the drive device on the drive shaft side of the dust remover and chaining the drive device. There was also a method of putting the entire drive device in a closed container to prevent the inflow of water.

In Patent Document 1, the periphery of the motor body is covered with a waterproof cover, the inlet and outlet of the cooling air of the waterproof cover are completely separated, and the cooling air introduced into the waterproof cover from the inlet is introduced into the motor body. A vehicle wiper drive motor that is configured to be introduced into the inside from the mouth to cool the inside of the motor body, and the cooled air is discharged to the outside through the air outlet provided in the motor body and the outlet of the waterproof cover. Is disclosed.

Patent Document 2 discloses a seal structure between a motor housing and an output shaft that can be waterproofed even when the output shaft is not downward.

Patent Document 3 has a configuration in which an electric box is covered with an inundation prevention cover whose lower portion is open, and the inundation prevention cover is provided with a hot air discharge guide pipe and a hot air discharge hole, and is further provided with an air supply pipe to provide water ingress. A configuration is disclosed that uses the air pressure inside the prevention cover to prevent water from entering the electric box.

Patent Document 4 discloses a configuration in which a vacuum pump installed in a manhole of a vacuum sewer system is housed in a submersion prevention dome having an open lower end.

JP-A-2002-354745 Japanese Patent No. 5402829 Japanese Patent No. 5886958 Japanese Patent No. 5909395

However, with the method of installing the drive unit as high as possible as described above, there are restrictions on the space dimension to the ceiling where the installation location can be used, and by installing it at a high position, maintenance during normal use is troublesome. Therefore, there was a problem that workability deteriorated.

In addition, in the method of storing the entire drive device in a closed container as described above, it is necessary to have a large motor capacity with a margin due to the problem of heat dissipation from the motor, and the equipment becomes large and the cost increases accordingly. , There was a risk that the delivery time would be prolonged.

Further, although Patent Document 1 discloses a structure in which the motor body is covered with a waterproof cover, it is not a drive motor for water treatment equipment and is not intended to be submerged. Therefore, water treatment equipment It is not a waterproof cover having a structure suitable for use in (particularly, a driving device for a dust remover). That is, Patent Document 1 is intended to waterproof the wiper drive motor of the vehicle, but has a configuration for the purpose of cooling the inside of the motor body and intake / exhaust efficiency, and is not submerged but is covered with water. It is intended for waterproofing. Moreover, it is necessary to drill holes in the motor body, and the structure does not provide waterproofness only with the waterproof cover.

Patent Document 2 discloses a seal structure between the motor housing and the output shaft, but does not disclose a waterproof structure using a waterproof cover as in the present application.

Although Patent Document 3 discloses an inundation prevention cover for an electric switch box that controls a power source of an electric facility, it can be used as a waterproof cover having a structure suitable for use in a water treatment facility (particularly, a drive device for a dust remover). It is not. Further, the hot air discharge hole is for discharging the hot air inside the inundation prevention cover, and for that purpose, it is necessary to install the hot air discharge guide pipe in the inundation prevention cover, which complicates the construction.

Although Patent Document 4 discloses a submersion prevention dome of a vacuum pump installed in a manhole, it is a waterproof cover having a structure suitable for use in water treatment equipment (particularly, a drive device for a dust remover). Not.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to prevent the drive device of the water treatment equipment from being submerged even if the water treatment equipment is submerged due to flooding or inundation. Water treatment can be protected, the water treatment equipment can be used immediately after the water is drained, the construction is easy with a simple configuration, and the water treatment is equipped with a waterproof cover for the drive that can cool the drive. To provide equipment.

The present invention is for covering a driving device provided with a drive shaft for driving the water treatment facility, drive unit cover member is mounted, the drive unit cover member has an opening which is released downward is formed Rutotomoni A seal case covering the seal provided at a portion where the drive shaft penetrates the drive unit cover member is connected to the drive unit cover member, and the drive shaft is connected to the drive unit cover member when submerged. The air in the drive unit cover member is sealed, and the volume V1 of the air in the drive unit cover member with respect to the assumed submersion depth is determined.
P0 x V0 = P1 x V1
However,
V0: Volume inside the drive unit cover member
P0: Atmospheric pressure
V1: Volume of air inside the drive unit cover member at the assumed submerged depth
P1: Pressure of air inside the drive unit cover member at the assumed submerged depth
Even when the volume is V1 obtained by the above equation, the volume inside the drive unit cover member is set to V0 so that the water level in the drive unit cover member is expected to be located below the drive device . ..
Examples of water treatment equipment include, but are not limited to, sand basin machines, dust removers, belt conveyors, screw conveyors, etc. installed in sewage treatment plants and pumping stations. Further, the drive device may be attached to the end of the drive shaft or may be attached in the middle of the drive shaft.
According to the present invention, even if the water treatment equipment is submerged due to flooding, inundation, etc., the drive device of the water treatment equipment can be protected from the submersion. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble.
Further, in the present invention, since the drive device is covered with the drive unit cover member, the construction is easy and the drive device itself does not need to be processed. Therefore, a general-purpose drive device that is generally used is used. Can be done.

Further, as the water treatment equipment provided with the waterproof cover for the drive device, a drive unit cover member is attached in order to cover the drive device provided with the drive shaft for driving the water treatment equipment, and the drive unit cover member is below. was openings freed formed toward, whereas either the drive shaft provided a seal portion which penetrates the drive unit cover member, or even be provided with a drive shaft waterproof cover for sealing the drive shaft preferred.
Similar to the above, the water treatment equipment includes, for example, sand basin machines, dust removers, belt conveyors, screw conveyors, etc. installed in sewage treatment plants and pumping stations, but the water treatment equipment is not limited to these. Further, the drive device may be attached to the end of the drive shaft or may be attached in the middle of the drive shaft.
According to this water treatment facility , even if the water treatment facility is submerged due to flooding or inundation, the drive device of the water treatment facility can be protected from the submersion. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble.
In addition, since this water treatment facility has a simple structure in which the drive device is covered with a drive unit cover member, it is easy to install and it is not necessary to process the drive device itself, so a general-purpose drive device that is generally used is used. can do.

Further, in the present invention, in addition to the above features, a seal provided at a portion where the drive shaft penetrates the drive unit cover member prevents water from entering from the outside and seals the inside air so as not to go out. It is characterized by having a structure in which the oil is arranged and greased.
As a result, when the drive device is submerged, water does not enter the inside of the drive unit cover member from the seal portion, and even if the air pressure inside the drive unit cover member rises, the internal air leaks to the outside. Can be prevented, and an effective waterproof effect can be obtained by these.

Further, in addition to the above features, the present invention is provided with a slide function in which the drive shaft receives a radial load of the drive shaft and the seal case covering the seal has a slide function for raising and lowering the drive shaft with respect to the water treatment equipment. It is characterized by that.
Thereby, the bearing on the drive device side of the drive shaft can be omitted, and the structure thereof can be simplified.

Further, as a water treatment facility provided with a waterproof cover for this drive device, the output shaft of the drive device located below the drive shaft is rotationally driven on the drive shaft for driving the water treatment facility via a power transmission mechanism. In the water treatment equipment that can be connected, a drive unit cover member that covers the drive unit is attached, and the drive unit cover member is formed with an opening that is open downward, and the output shaft or the output shaft. It is also preferable that the rotation shaft on the drive device side of the power transmission mechanism connected to the above penetrates through the seal.
Similar to the above, the water treatment equipment includes, for example, sand basin machines, dust removers, belt conveyors, screw conveyors, etc. installed in sewage treatment plants and pumping stations, but the water treatment equipment is not limited to these.
According to this water treatment facility , even if the water treatment facility is submerged due to flooding or inundation, the drive device can be protected from submersion. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble.
In addition, since this water treatment facility has a simple structure in which the drive device is covered with a drive unit cover member, it is easy to install and it is not necessary to process the drive device itself, so a general-purpose drive device that is generally used is used. can do.

Further, in the water treatment equipment provided with the waterproof cover for this drive device, in addition to the above features, both sides of the drive device side rotation shaft of the power transmission mechanism connected to the output shaft are rotatably supported by bearings. and, wherein the drive unit cover member are preferred configuration covering both the coupling portion and the driving device for connecting the output shaft and the drive device side rotating shaft.
According to this water treatment facility , the rotating shaft on the drive device side can be reliably supported, and at the same time, the coupling portion can be protected from submersion.

Further, as a water treatment facility provided with a waterproof cover for this drive device, the output shaft of the drive device located above the drive shaft is rotationally driven on the drive shaft for driving the water treatment facility via a power transmission mechanism. In the water treatment equipment that can be connected to each other, a drive unit cover member that covers at least a part of the power transmission mechanism and the drive unit is attached, and the drive unit cover member is formed with an opening that is open downward. The configuration is also preferable .
Similar to the above, the water treatment equipment includes, for example, sand basin machines, dust removers, belt conveyors, screw conveyors, etc. installed in sewage treatment plants and pumping stations, but the water treatment equipment is not limited to these.
According to this water treatment facility , even if the water treatment facility is submerged due to flooding or inundation, the drive device can be protected from submersion. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble.
In addition, since this water treatment facility has a simple structure in which the drive device is covered with a drive unit cover member, it is easy to install and it is not necessary to process the drive device itself, so a general-purpose drive device that is generally used is used. can do. In particular, in this water treatment facility , since the drive unit cover member is installed for the drive device located above the drive shaft that drives the water treatment equipment, there is no need to use a seal mechanism, and the drive unit has a simpler structure. The cover member can cover a part of the power transmission mechanism together with the drive device.

Further, in addition to the above features, the present invention uses the side wall portion and the opening of the drive unit cover member to form an intake passage having an introduction port for introducing outside air inside the drive unit cover member. It is a feature.
Since the intake passage (duct) is formed by using the side wall portion and the opening of the drive portion cover member, the intake passage can be easily and compactly formed with a simple configuration. Then, by this intake passage, outside air can be easily introduced into the inside of the drive unit cover member during normal operation when the water treatment equipment is not submerged, thereby dissipating heat generated by the drive device and cooling it. Can be done. As a result, even if the drive device is covered with a drive unit cover member, it is not necessary to increase the motor capacity to a large motor capacity with a margin, the equipment can be miniaturized, the cost can be reduced, and the delivery time can be shortened. be able to.

Further, in addition to the above features, the present invention is characterized in that a gas generating agent that generates gas when it comes into contact with water is installed in the drive unit cover member.
According to the present invention, when water enters the drive unit cover member, the air pressure inside the cover can be increased. Therefore, the height dimension of the drive unit cover member can be shortened, and the size of the drive device waterproof cover can be reduced.

Further, in addition to the above features, the present invention is characterized in that the gas generating agents are installed at a plurality of positions having different mounting heights.
According to the present invention, the air pressure inside the cover can be increased stepwise according to the height of water entering the drive unit cover member, so that it is possible to avoid unnecessarily increasing the air pressure inside the cover. Also, it is possible to prevent excessive consumption of the gas generating agent.

According to the present invention, even if the water treatment equipment is submerged due to flooding, inundation, etc., the drive device of the water treatment equipment can be protected from the submersion, and the water treatment equipment can be used immediately after the water is drained. It is possible, the construction is easy with a simple configuration, and the driving device can be effectively cooled.

FIG. 1A is a schematic configuration diagram of a part of the dust remover 100, a drive device 10, and a main part of the drive device waterproof cover 50, and FIG. 1B is a part of the dust remover 100, a drive device 10, and a drive device waterproof cover. A schematic configuration diagram of a main part of 50', FIG. 1 (c) is a view of the drive device waterproof cover 50'of FIG. 1 (b) viewed from the direction of arrow A. FIG. 5 is an enlarged schematic cross-sectional view of the drive device 10 to which the drive device waterproof cover 50 is attached. It is explanatory drawing about the air pressure in the cover member 51 and the water pressure outside the cover member 51 at the position of the seal mechanism 30 at the time of submersion. It is schematic cross-sectional view which shows a specific example of the drive device 10 which installed the drive device waterproof cover 50. FIG. 6 is an enlarged schematic cross-sectional view of a main part of FIG. It is a figure which shows the other embodiment of the drive device waterproof cover 50. It is a figure which shows the other embodiment of the drive device waterproof cover 50. It is a schematic block diagram of a part of a dust remover 100, a drive device 10, and a main part of a drive device waterproof cover 50 according to another embodiment. It is schematic cross-sectional view which shows a specific example of the drive device 10 which installed the drive device waterproof cover 50 which concerns on another embodiment. It is schematic cross-sectional view of the main part which shows the other example of the drive device 10 which installed the drive device waterproof cover 50. It is a schematic block diagram of the main part of the dust remover 100A, the power transmission mechanism 200A, the drive device 10A, and the drive device waterproof cover 50A. It is a schematic block diagram of the main part of a dust remover 100B, a power transmission mechanism 200B, a drive device 10B, and a drive device waterproof cover 50B.

The present invention relates to a drive shaft waterproof cover that protects a drive device of a water treatment facility (for example, a sand basin machine, a dust remover, etc.) submerged due to flooding or inundation from submersion in a sewage treatment plant, a pumping station, or the like. In the present embodiment, the case of the dust remover will be described in detail with reference to the drawings.

FIG. 1A is a schematic configuration diagram of a main part showing a part of the dust remover 100, a drive device 10 for driving the dust remover 100, and a drive device waterproof cover 50 attached to the drive device 10. Note that FIG. 1A shows a state in which the dust remover 100 and the drive device 10 are submerged. As shown in the figure, the dust remover 100 is configured by attaching a pair of sprockets 103 to its drive shaft 101 and winding a chain on which a rake (not shown) is attached to each of these sprockets 103. A dust remover cover 105 is put around the dust remover 100. Further, the outer portions of both sprockets 103 of the drive shaft 101 are rotatably supported by a bearing 107 attached to the dust remover cover 105. One end side of the drive shaft 101 protrudes from the bearing 107, and a drive device 10 for rotationally driving the drive shaft 101 is attached to the shaft end, and the drive device 10 is further covered by the drive device 10. A waterproof cover 50 is installed.

FIG. 2 is an enlarged schematic cross-sectional view of the drive device 10 to which the drive device waterproof cover 50 is attached, and FIG. 2 (a) is a view of the upper portion of the drive device waterproof cover 50 cut in the horizontal direction and viewed from above. (A cross-sectional view taken along the line AA in FIG. 2B), FIG. 2B is a view of the drive device waterproof cover 50 cut in the vertical direction and viewed from the front (B- in FIG. 2A). B cross-sectional view). As shown in these figures, the shaft end of the drive shaft 101 is inserted into the drive device 10 and is driven by the drive device 10.

The drive device waterproof cover 50 includes a drive unit cover member (hereinafter referred to as “cover member”) 51 that covers the drive device 10 and a seal mechanism 30. The cover member 51 is configured by forming, for example, a plate material made of a steel plate in a box shape, forming a space under the drive device 10 as much as necessary, and then providing an opening 53 at the lowermost portion thereof. Other than the opening 53 (the upper surface and the side surface thereof) are hermetically sealed. Here, the space required under the drive device 10 means the following space. That is, the water level in the cover member 51 rises with the depth of submersion of the drive device 10, but the air in the cover member 51 is compressed by this water level rise, and the air pressure in the cover member 51 rises. Balanced with the water pressure at the submerged depth. Then, a space in which the water level in the cover member 51 with respect to the assumed submersion depth is expected to be located below the drive device 10 is set as the required space.

On the side surface of the cover member 51, a penetrating portion 54 with a sealing mechanism 30 that seals with the drive shaft 101 is formed.

A pair of intake passages (ducts) 55 in the vertical direction are formed at two corners of the cover member 51 on the side away from the sealing mechanism 30. The intake passage 55 can be easily manufactured, for example, by fixing a steel plate 57 to the corner of the cover member 51 by screwing or welding, and can be constructed by preparing the intake passage 55 in advance on the cover member 51. (Installation of the cover member 51) becomes easy. That is, the troublesome construction of installing the piping or the like after installing the cover member 51 becomes unnecessary. The upper end of the intake passage 55 is an outlet 55a which is separated from the top surface of the cover member 51 by a predetermined dimension, and the lower end is an introduction port 55b facing the opening 53, whereby suction is performed from the introduction port 55b. The air is guided to the upper part of the cover member 51 and discharged from the outlet 55a. Further, the intake passage 55 has a triangular shape in a plan view in this example.

Further, the drive device 10 is configured by installing the motor 10b on the lower gearbox 10a. A cooling fan 59 for cooling the motor 10b is installed above the motor 10b. Then, by rotating the cooling fan 59 when the drive device 10 is driven, the air in the upper part of the cover member 51 is moved downward from the upper side of the motor 10b, as shown by an arrow in FIG. 2B. It is swept away to cool the drive device 10, that is, the outer fin portion of the motor.

Then, during normal operation in which the dust remover 100 is not submerged, the drive shaft 101 is rotated by driving the drive device 10, and the dust remover 100 is normally operated. At the same time, as described above, the cooling fan 59 of the motor 10b supplies the drive device 10 with cooling air to cool the drive device 10. That is, when the cooling fan 59 is driven, external cold air is introduced from the introduction port 55b at the lower end of the intake passage 55 toward the outlet 55a, supplied to the cooling fan 59, and the wind around the cooling fan 59. Since it is supplied to the drive device 10 by merging with the drive device 10, the drive device 10 can be effectively cooled. The warmed air after cooling can be smoothly exhausted downward from the opening 53. As a result, the heat of the drive device 10 can be efficiently dissipated. If the intake passage 55 is not installed, the cooling fan 59 will send only the warmed air inside the cover member 51 to the motor 10b (drive device 10), which is effective for the drive device 10. However, in this embodiment, since the intake passage 55 is provided, external air can be efficiently introduced into the cover member 51, and the drive device 10 can be effectively cooled. The present invention has a configuration in which the cover member 51 is installed as a measure against waterproofing and submersion of the drive device 10, but the problem of heat retention generated from the drive device 10 whose airtightness is improved by this is also as described above. It can be resolved.

Next, as shown in FIG. 1A, when the dust remover 100 is submerged, the drive device 10 is also located below the water surface, so that water enters the inside through the opening 53 of the cover member 51. As described above, the cover member 51 has a closed structure except for the lower opening 53. Therefore, for example, the height dimension of the space below the drive device 10 of the cover member 51 is the top of the cover member 51. When the height dimension of the space from the surface to the drive device 10 is almost the same as the height dimension, when the water depth H of the drive device 10 becomes 10 m, the volume of air in the cover member 51 is halved (1/2). Then, the pressure becomes 2 atm and is balanced. Therefore, as shown in FIG. 1, water does not enter the drive device 10 and is not submerged. At this time, the drive device 10 is stopped.

This will be explained by an equation based on FIG. 1 (a) as follows. That is, when the dust remover 100 is submerged, the following equation is established.
PV = constant, more
P0 x V0 = P1 x V1
V0: Volume inside the cover member 51 (volume of height hc, volume of drive device 10 is ignored here)
P0: Atmospheric pressure (pressure inside the cover member 51 before submersion, 10 m of water column at atmospheric pressure)
V1: Volume of air inside the cover member 51 when submerged
(The volume of the height hv and the volume of the drive device 10 are ignored here)
P1: Pressure of air inside cover member 51 when submerged From this, when submerged by 10 m (where the water surface is 10 m from the vicinity of the drive device 10)
P0 x V0 = (P0 + P10) x V1
P10: Water pressure for 10 m of the head P10 is the same as atmospheric pressure, so P0 + P10 = 2 × P0
Next,
V1 = 1/2 x V0
That is, the volume is halved.

Since the above equation holds, when the assumed water depth at the time of submersion is deep (for example, when it is installed underground), the space under the drive device 10 of the waterproof cover 30 (its height dimension) is increased to increase the estimated water depth. If it is shallow, the space (height dimension) under the drive device 10 of the waterproof cover 30 can be reduced, and the design can be performed without waste.

By the way, when the cover member 51 is submerged, the pressure inside the cover member 51 increases according to the submersion depth, so that the cover member 51 does not need to be specially reinforced. Further, the pressure difference between the outside and the inside of the seal in the seal mechanism 30 of the penetrating portion 54 becomes small. Therefore, the seal of the seal mechanism 30 may be a seal that considers a small pressure difference, and does not need to consider the pressure difference so much. This point will be described below. Here, FIG. 3 is an explanatory diagram of the air pressure inside the cover member 51 and the water pressure outside the cover member 51 at the position of the seal mechanism 30 when submerged.

That is, the pressure difference (head difference) X (m) between the inside and outside of the cover member 51 in the seal mechanism 30 portion is
Water depth of drive device 10: H (m)
Depth of water that has entered the cover member 51: h (m)
Height from the water depth H of the drive device 10 to the depth h of the water that has entered the cover member 51: b (m)
Then
The air pressure (water head) inside the cover member 51 is (H + b) (m), and the external pressure (water head) at the position of the seal mechanism 30 is H (m).
X = (H + b) -H = b
Will be.

That is, the pressure difference (water head difference) X (m) inside and outside the cover member 51 is only the depth b (m) from the water depth H of the drive device 10 to the water depth h of the water that has entered the cover member 51. The pressure difference is small.

By the way, as a measure against submersion, a structure in which the entire drive device 10 is placed in a sealed container is conceivable, but in the case of this structure, due to the problem of heat dissipation of the drive device 10, as described above, a rank with a large capacity with a margin is higher. It is necessary to take measures such as using the drive device 10, the closed container needs to be strong according to the water depth because it receives the water pressure at the time of submersion, and the penetration portion 54 is sealed according to the water pressure. However, according to the present embodiment, since the lower part of the cover member 51 is open during normal operation, it is easy to dissipate heat from the drive device 10. Therefore, it is possible to increase the heat dissipation effect in consideration of the passage through which the air flows in advance, and when the cover member 51 is submerged, the internal pressure of the cover member 51 also increases to the extent of the water pressure, so that only a small amount of reinforcement is required. Furthermore, it can be operated even when it is submerged, and it can be operated immediately after the water is drained.

The two bearings 107 are generally used in the air, but the rotation speed may be low, and even if some water enters the bearings 107, the bearings will not be immediately inoperable. However, after emergency operation after submersion, it is better to overhaul or replace at an early stage. Further, if a metal type bearing that does not hinder submersion is used as the two bearings 107, the power efficiency is slightly lowered, but the use can be continued as it is even after being submerged.

FIG. 4 is a schematic cross-sectional view showing a specific example of the drive device 10 in which the drive device waterproof cover 50 is installed, and FIG. 5 is an enlarged schematic cross-sectional view of a main part thereof. In both figures, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals, and detailed description thereof will be omitted. As shown in FIGS. 4 and 5, a hollow shaft type having a hole for inserting the drive shaft 101 is used as the drive device 10. That is, the shaft end of the drive shaft 101 is inserted and fixed in the hole of the hollow shaft of the drive device 10, whereby the load of the drive device 10 is supported by the shaft end of the drive shaft 101, and there is no pedestal of the drive device 10. , It is not fixed to the main body case. The drive device 10 is supported by a member 105a on the dust remover cover 105 side by a pair of torque arms 11 (only one is shown in the figure) so as not to rotate about the drive shaft 101 (corresponding to the members 105a on both the left and right sides). The drive device 10 is supported so as not to rotate by being in contact with the drive device 10). Further, the bearing 107 is connected to and supported by the member 105a by a support bolt (drive shaft elevating bolt) 109. In consideration of the elongation of the chain of the dust remover 100, the drive shaft 101 has a structure that can be raised and lowered by the support bolt 109. Then, when the drive shaft 101 is moved up and down, the drive device 10 also moves up and down in accordance with this, and the pair of torque arms 11 also move up and down (sliding) while abutting on the member 105a.

A seal mechanism 30 is installed on the surface of the cover member 51 on the dust remover cover 105 side. The seal mechanism 30 has a seal case 31 having a hole through which the drive shaft 101 penetrates, and a seal 40 installed between the hole and the drive shaft 101. The outer peripheral portion of the seal case 31 is fixed and connected to the cover member 51 in a sealed state. The inner surface of the seal case 31 penetrating the cover member 51 is fixed to the drive device 10 with bolts. Further, the torque arm 11 is fixed to the seal case 31, and the tip thereof is supported (contacted) with the member 105a on the dust remover cover 105 side, thereby preventing the drive device 10 from rotating. The torque arm 11 may be fixed to the cover member 51 instead of the seal case 31. For the attachment and maintenance of the drive device 10, the cover member 51 is preferably divided into two parts, the attachment side of the seal case 31 and the other portion. A packing is attached to the flange 52 (see FIG. 4) of the dividing surface to ensure waterproofness.

The seal 40 is filled with grease and sealed with an oil seal. As shown in FIG. 5, two seals 41 for preventing water from entering from the outside and internal air leakage from the inside of the cover member 51 The spacer 45 is provided in the middle of the two seals 41 and 43, and the spacer 45 can be greased. When the dust remover 100 is submerged, as described above, in the portion of the seal 40, the air pressure inside the cover member 51 is higher than the water pressure outside the water pressure from the water surface inside the cover member 51 to the height of the seal 40. Although it is higher by the amount, it can be surely sealed by this seal 40.

6 and 7 are diagrams showing other embodiments of the drive device waterproof cover 50, respectively. Each figure is a view of a portion corresponding to FIG. 2 (a). In FIGS. 6 and 7, the same or corresponding parts as the drive device waterproof cover 50 according to the embodiment shown in FIGS. 1 to 5 are designated by the same reference numerals. Items other than the items described below are the same as those in the embodiments shown in FIGS. 1 to 5.

That is, in FIG. 2A, the intake passage 55 has a triangular shape in a plan view, but as shown in FIG. 6, a square shape in a plan view may be used. In this case, for example, if an L-shaped steel material is used, it can be created more easily. Further, for example, as shown in FIG. 7, the plan view may be one rectangular shape having the same width as the width of the cover member 51. In this case, for example, it can be easily produced by using one steel plate material. The shape and structure of the intake passage 55 are not limited to each of the above embodiments, and can be arbitrarily set according to the shape of the cover member 51.

1 (b) and 1 (c) are views showing an example in which the configuration of the drive device waterproof cover 50'in the device shown in FIG. 1 (a) is changed, and FIG. 1 (b) is a diagram of the dust remover 100. A schematic configuration diagram of a part, the drive device 10, and the main part of the drive device waterproof cover 50', FIG. 1 (c) is a view of the drive device waterproof cover 50'of FIG. 1 (b) viewed from the direction of arrow A. In this embodiment, the same or corresponding parts as those in the embodiment shown in FIG. 1A are designated by the same reference numerals. Items other than the items described below are the same as those in the embodiments shown in FIGS. 1 (a) to 7 above.

The drive device waterproof cover 50'shown in FIG. 1 (b) differs from the drive device waterproof cover 50 shown in FIG. 1 (a) in that the length of the portion of the cover member 51 below the drive device 10 is set. The point is that the inspection port (hand hole) 51h is provided on the side wall of the cover member 51, and the lid 63 is detachably sealed and attached to the inspection port (hand hole) 51h to provide the inspection window mechanism.

When the depth of submersion of the drive device 10 is assumed to be shallow (for example, about 1 to 3 m), the length dimension of the cover member 51 can be shortened as in this example, thereby making it compact. Further, by providing the inspection window 51h, it is possible to inspect the oil level gauge (not shown) installed in the drive device 10. The lid 63 is configured to be openable / closable or removable. If the lid 63 is a transparent window, the inside can be inspected without opening. The window may be fixed or openable. The inspection window mechanism is also installed in the embodiments shown in FIGS. 10 and 11 below. Further, although the inspection window mechanism is not described in the embodiments shown in FIGS. 1 (a), 8 and 12, it goes without saying that the inspection window mechanism can be installed in the same manner.

FIG. 8 is a schematic configuration diagram of a part of the dust remover 100, the drive device 10, and the drive device waterproof cover 50 according to another embodiment, and is a diagram of a part corresponding to FIG. 1 (a). be. In this embodiment, the same or corresponding parts as those in the embodiments shown in FIGS. 1 to 7 are designated by the same reference numerals. Items other than the items described below are the same as those in the embodiments shown in FIGS. 1 to 7. In this embodiment, the differences from the embodiments shown in FIGS. 1 to 7 are that the structure of the drive device waterproof cover 50 and the bearing portion cover 73 are installed.

That is, in this embodiment, the drive shaft 101 protruding from the drive device 10 and the drive shaft waterproof cover 71 covering the bearing 107 are installed. The drive shaft waterproof cover 71 has a tubular shape, one side of which is hermetically connected to the cover member 51, and the other side of which is in close contact with and integrated with the seal mechanism 30. Here, the bearing 107 on the drive device 10 side is installed on the drive device 10 side with respect to the seal mechanism 30. The seal mechanism 30 and the bearing 107 have the same configuration as the seal mechanism 30 and the bearing 107 shown in FIG.

Further, in the case of this embodiment, the portion of the bearing 107 on the opposite side of the drive shaft 101 is also covered with the bearing portion cover 73. Similarly to the cover member 51, the bearing portion cover 73 is also formed by forming, for example, a steel plate material in a box shape to form a space under the bearing 107 to be housed, and then at the lowermost portion thereof. It is configured by providing an opening 75. Other than the opening 75 (the upper surface and the side surface thereof) are hermetically sealed. Here, the space required under the bearing 107 means that the water level in the bearing portion cover 73 with respect to the assumed submersion depth is located below the bearing 107, as in the case of the cover member 51. It is a space that is expected to be like this. A sealing mechanism 79 that seals with the drive shaft 101 is attached to the side surface of the bearing portion cover 73. The structure of the seal mechanism 79 is the same as that of the seal mechanism 30, and the outer peripheral portion of the seal case is fixed and connected to the bearing portion cover 73 in a sealed state.

As described above, in this embodiment, the portion of the drive shaft 101 protruding from the drive device 10 and the bearing 107 are housed in the drive device waterproof cover 50, and the bearing 107 on the opposite side is also housed in the bearing portion cover 73. Since it is housed inside, it is possible to prevent the drive shaft 101 (the portion extending from the drive device 10 to the bearing 107) and both bearings 107 from being flooded together with the drive device 10.

FIG. 9 is a schematic cross-sectional view showing a specific example of the drive device 10 in which the drive device waterproof cover 50 according to still another embodiment of the present invention is installed, and is a view of a portion corresponding to FIG. In this embodiment, the same or corresponding parts as those in the embodiments shown in FIGS. 1 to 7 are designated by the same reference numerals. Items other than the items described below are the same as those in the embodiments shown in FIGS. 1 to 7. In this embodiment, the difference from the embodiments shown in FIGS. 1 to 7 is that the bearing on the drive device 10 side is omitted, and the seal case 31 of the seal mechanism 30 is supported by the support bolt (drive shaft elevating bolt) 109. It is a point connected to and supported by the member 105a. Here, the drive device 10 receives the radial load of the drive shaft 101, and the seal case 31 is provided with a slide function. The torque arm 11 (see FIG. 4) used in the above embodiment is omitted. By omitting the bearing on the drive device 10 side in this way, the structure can be simplified.

FIG. 10 is a schematic cross-sectional view of a main part showing a drive device 10 in which a drive device waterproof cover 50 according to still another embodiment of the present invention is installed. In this embodiment, the same or corresponding parts as those in the embodiments shown in FIGS. 1 to 7 are designated by the same reference numerals. Items other than the items described below are the same as those in the embodiments shown in FIGS. 1 to 7. In this embodiment, the difference from the embodiments shown in FIGS. 1 to 7 is that the gas that generates gas when it comes into contact with water is located at the lower position of the drive device 10 in the cover member 51 that constitutes the waterproof cover 50. The generators 160 and 160 are installed in two upper and lower stages separated by a predetermined distance, and the length dimension of the cover member 51 in the vertical direction is shortened.

Although the gas generating agent 160 is stored in the tray 161, it may be installed by various other methods. Further, although baking soda (sodium hydrogen carbonate) is used as the gas generating agent 160 in this example, various other chemical agents may be used as long as they come into contact with water to generate gas.

With this configuration, when the dust remover 100 and the drive device 10 are submerged, water infiltrates into the inside of the cover member 51 through the opening 53 according to the water depth, and at the same time, the internal air pressure (inside the cover). Atmospheric pressure) rises. Then, when the water level of the infiltrated water reaches the position of the gas generating agent 160 on the lower side, the water comes into contact with the gas generating agent 160 and gas (carbon dioxide gas) is generated. Then, due to the generation of gas, the air pressure inside the cover rises further, and the rise in water level due to submersion is suppressed (in some cases, the water level is pushed down).

When the water level in the cover member 51 further rises due to the generation of the gas and reaches the position of the gas generating agent 160 on the upper side, the water comes into contact with the gas generating agent 160 and gas is generated again. Then, due to the generation of gas, the air pressure inside the cover rises further, and the rise in water level due to submersion is suppressed (in some cases, the water level is pushed down). Since the air pressure inside the cover can be increased in this way, it is possible to prevent the drive device 10 from being submerged even if the height dimension of the cover member 51 is shortened as in this embodiment.

Further, in this embodiment, since the gas generating agent 160 is installed at a plurality of positions having different mounting heights, the air pressure inside the cover is gradually increased according to the infiltration height of water entering the cover member 51. It is possible to avoid unnecessarily high pressure, and it is also possible to prevent excessive consumption of the gas generating agent 160. The gas generating agent 160 may be installed at one or a plurality of locations of three or more locations.

Explaining a specific example when baking soda is used as the gas generating agent 160, the reaction formula when the baking soda reacts with water is as follows.
_{2NaHCO 3 → Na 2 CO 3 +} CO 2 + H 2 O

_{This means that CO 2} (1 mol, 22.4 liters in the standard state) is generated from 168 g (2 mol) of baking soda.

Here, even if the capacity of the cover member 51 is 120 liters and the water is submerged to a depth of 10 m, the air pressure inside the cover may be doubled in order to prevent water from entering the cover member 51. That is, if there is 120 liters of gas (standard state) added in the waterproof cover 50, the water level drops to the lower end of the waterproof cover 50. _{The amount of gas CO 2} required for that purpose is 120 / 22.4 (mol), and _{the required amount of baking soda that generates this amount of CO 2} is (120 / 22.4) × 84 × 2 → 900 g.

FIG. 11 is a schematic configuration diagram showing still another dust remover 100A of the present invention, a power transmission mechanism 200A, a drive device 10A, and a drive device waterproof cover 50A, and FIG. 11A is a side schematic configuration diagram and a view thereof. 11 (b) is a schematic front view (AA cross-sectional arrow view of FIG. 11 (a)). As shown in the figure, the dust remover 100A is configured by attaching a pair of sprockets 103A to its drive shaft 101A and winding a chain with a rake (not shown) attached to each of these sprockets 103A. A dust remover cover 105A is put around the dust remover 100A. Further, the outer portions of both sprockets 103A of the drive shaft 101A are rotatably supported by a bearing 107A attached to the dust remover cover 105A. One end side of the drive shaft 101A protrudes from the bearing 107A, and a driven side wheel 201A forming a part of the power transmission mechanism 200A is attached to the shaft end.

The drive device 10A is mounted on a pedestal 150A installed side by side on the floor surface 210A on which the dust remover 100A is installed. The drive device 10A is installed horizontally, and the motor 10bA is installed on one side of the gearbox 10aA. A cooling fan 59A for cooling the motor 10bA is installed at the end of the motor 10bA. Then, by rotating the cooling fan 59A when the drive device 10A is driven, the surrounding air is flowed from the motor 10bA toward the gearbox 10aA side as shown by the arrow C, and the drive device 10A is cooled. Will be done.

The output shaft 13A of the drive device 10A is connected to the power transmission mechanism 200A via the coupling portion 201A. The power transmission mechanism 200A is located between the drive device side rotary shaft 203A, the pair of bearings 205A and 207A that pivotally support the drive device side rotary shaft 203A, and the pair of bearings 205A and 207A of the drive device side rotary shaft 203A. The drive side wheel 209A attached to the drive side wheel 209A, the chain 211A wound between the drive side wheel 209A and the driven side wheel 201A, and the driven side wheel 201A are provided. The end portion of the drive device side rotary shaft 203A is connected to the output shaft 13A by the coupling portion 201A. The pair of bearings 205A and 207A are mounted on the bases 213A and 215A installed on the floor surface 210A, respectively.

The drive device waterproof cover 50A includes a drive unit cover member (hereinafter referred to as “cover member”) 51A that covers the drive device 10A, and a seal mechanism 30A. The cover member 51A is configured by forming, for example, a plate material made of a steel plate in a box shape, forming a necessary space under the drive device 10A, and then providing an opening 53A at the lowermost portion thereof. Other than the opening 53A (the upper surface and the side surface thereof), the airtightness is provided. On the side surface of the cover member 51A, a penetrating portion 54A is formed with a sealing mechanism 30A that seals with the drive device side rotating shaft 203A.

An intake passage (duct) 55A extending in the vertical direction is formed on the side surface of the cover member 51A on the side away from the sealing mechanism 30A. The intake passage 55A can be easily manufactured, for example, by fixing a plate material made of a steel plate to the side surface (for example, a corner thereof) of the cover member 51A by screwing or welding, as in each of the above embodiments. It can be made, and if it is manufactured in advance on the cover member 51A, the construction (installation of the cover member 51A) becomes easy. The upper end of the intake passage 55A is an outlet 55aA that opens near the cooling fan 59A that is a predetermined dimension away from the top surface of the cover member 51A, and the lower end is an introduction port 55bA that faces the opening 53A. As a result, the air sucked from the introduction port 55bA is guided to the vicinity of the cooling fan 59A in the cover member 51A. The intake passage 55A has the same shape as the intake passage 55 shown in FIGS. 2A, 6, 7, and the like.

Then, during normal operation in which the dust remover 100A is not submerged, the output shaft 13A is rotated by driving the drive device 10A, and the power is transmitted to the drive shaft 101A via the power transmission mechanism 200A to drive the dust remover 100A. Operate normally. At the same time, the cooling fan 59A supplies the drive device 10A with cooling air to cool the drive device 10A. The cooled air is discharged from the opening 53A near the side wall on the opposite side where the intake passage 55A of the drive device waterproof cover 50A is provided. As a result, the drive device 10A can be effectively cooled.

Next, when the drive device 10A is submerged, water enters the inside of the cover member 51A through the opening 53A, but as described above, the cover member 51A has a closed structure except for the lower opening 53A. Therefore, the air in the cover member 51A is compressed by the volume integral of the infiltrated water, the air pressure rises, and the amount of the infiltrated water is limited. Therefore, water does not enter the drive device 10A up to a predetermined submersion depth, and the drive device 10A is not submerged. At this time, the drive device 10A is stopped. By increasing the height of the gantry 150A and extending the length of the portion of the cover member 51A below the drive device 10A downward by that amount, it is possible to cope with a deeper submersion depth.

That is, according to the drive device waterproof cover 50A, the drive device 10A can be protected from submersion even if the water treatment equipment such as the dust remover 100A is submerged due to flooding, flooding, or the like, as in each of the above embodiments. .. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble. Further, since the drive device 10A is covered with the cover member 51A, the construction is easy and the drive device 10A itself does not need to be processed, so that a general-purpose drive device 10A that is generally used can be used. ..

Further, according to the drive device waterproof cover 50A, both sides of the drive device side rotation shaft 203A of the power transmission mechanism 200A are rotatably supported by bearings 205A and 207A, and the drive device waterproof cover 50A is rotated on the drive device side. Since both the coupling portion 201A and the drive device 10A that connect the shaft 203A and the output shaft 13A are covered, the drive device side rotation shaft 203A can be reliably supported, and at the same time, the coupling portion 201A can be easily submerged. Can be protected.

In this example, the drive device-side rotary shaft 203A connected to the output shaft 13A by the coupling portion 201A penetrates the cover member 51A via the seal mechanism 30A, but the output shaft 13A itself seals. The cover member 51A may be penetrated through the mechanism 30A (at this time, the coupling portion 201A is located outside the cover member 51A).

FIG. 12 is a schematic configuration diagram showing still another dust remover 100B (a part thereof) of the present invention, a power transmission mechanism 200B, a drive device 10B, and a drive device waterproof cover 50B, and FIG. 12A is a front view thereof. A schematic configuration diagram, FIG. 12B is a side schematic configuration diagram thereof, and FIG. 12C is a plan schematic configuration diagram thereof. As shown in the figure, the dust remover 100B is configured by attaching a pair of sprockets 103B to its drive shaft 101B and winding a chain with a rake (not shown) attached to each of these sprockets 103B. A dust remover cover 105B is placed around the dust remover 100B. Further, the outer portions of both sprockets 103B of the drive shaft 101B are rotatably supported by a bearing 107B attached to the dust remover cover 105B. One end side of the drive shaft 101B protrudes from the bearing 107B, and a driven side wheel 201B forming a part of the power transmission mechanism 200B is attached to the shaft end.

The drive device 10B is mounted on a pedestal 150B installed on the top surface of the dust remover cover 105B. The drive device 10B is installed horizontally, and the motor 10bB is installed on one side of the gearbox 10aB. A cooling fan 59B for cooling the motor 10bB is installed at the end of the motor 10bB. Then, by rotating the cooling fan 59B when the drive device 10B is driven, the surrounding air is flowed from the motor 10bB toward the gearbox 10aB side as shown by the arrow D, and the drive device 10B is driven. Cooling.

The output shaft 13B of the drive device 10B is connected to the power transmission mechanism 200B. The power transmission mechanism 200B includes a drive-side wheel 209B fixed to the output shaft 13B, a chain 211B wound between the drive-side wheel 209B and the driven-side wheel 201B, and the driven-side wheel 201B. ing.

The drive device waterproof cover 50B includes a drive unit cover member (hereinafter referred to as “cover member”) 51B that covers a part of the drive device 10B and the power transmission mechanism 200B (the upper portion of the drive side wheel 209B and the chain 211B). It is configured. The cover member 51B is configured by forming, for example, a plate material made of a steel plate in a box shape, forming a space as required under the drive device 10B, and then providing an opening 53B at the lowermost portion thereof. Other than the opening 53B (the upper surface and the side surface thereof) are hermetically sealed. The cover member 51B is formed with an overhanging portion 56B for covering the chain 211B that is slanted out.

An intake passage (duct) 55B heading in the vertical direction is formed on the side surface of the cover member 51B on the side away from the drive side wheel 209B. The intake passage 55B can be easily manufactured, for example, by fixing a plate material made of a steel plate to both corners of one side surface of the cover member 51B by screwing or welding, as in each of the above embodiments. If the cover member 51B is manufactured in advance, the construction (installation of the cover member 51B) becomes easy. The upper end of the intake passage 55B is an outlet 55aB that opens near the cooling fan 59B, which is a predetermined dimension away from the top surface of the cover member 51B, and the lower end is an introduction port 55bB that faces the opening 53B. As a result, the air sucked from the introduction port 55bB is guided to the vicinity of the cooling fan 59B. The intake passage 55B has the same shape as shown in FIG. 6, but may have the shape shown in FIGS. 2 (a) and 7 and the like.

Then, during normal operation in which the drive device 10B is not submerged, the output shaft 13B is rotated by driving the drive device 10B, and the power is transmitted to the drive shaft 101B via the power transmission mechanism 200B to drive the dust remover 100B. Operate normally. At the same time, the cooling fan 59B supplies the drive device 10B with cooling air to cool the drive device 10B. The cooled air is discharged from the opening 53B near the side wall on the opposite side where the intake passage 55B of the cover member 51B is provided. As a result, the drive device 10B can be effectively cooled.

Next, when the drive device 10B is submerged, water enters the inside through the opening 53B of the cover member 51B, but as described above, the cover member 51B has a closed structure except for the lower opening 53B. Therefore, the air in the cover member 51B is compressed by the volume integral of the infiltrated water, the air pressure rises, and the amount of the infiltrated water is limited. Therefore, water does not enter the drive device 10B up to a predetermined submersion depth, and the drive device 10B is not submerged. At this time, the drive device 10B is stopped. By increasing the height of the gantry 150B and extending the length of the portion of the cover member 51B below the drive device 10B downward by that amount, it is possible to cope with a deeper submersion depth.

That is, according to the drive device waterproof cover 50B, the drive device 10B can be protected from submersion even if the water treatment equipment such as the dust remover 100B is submerged due to flood or inundation, as in each of the above embodiments. .. Then, after the water is drained, the water treatment facility can be operated immediately without any trouble. Further, since the drive device 10B is covered with the cover member 51B, the construction is easy and the drive device 10B itself does not need to be processed, so that a general-purpose drive device 10B that is generally used can be used. .. In particular, in the case of this embodiment, since the drive device 10B is installed above the drive shaft 101B of the dust remover 100B, it is not necessary to provide the seal mechanisms 30, 30A and the penetrating portions 54, 54A provided in each of the above embodiments, and the cover. The configuration of the member 51B can be simplified. Further, since the upper part of the power transmission mechanism 200B can be covered, the power transmission mechanism 200B can be protected when submerged.

Although the chain mechanism is used in the power transmission mechanisms 200A and B shown in FIGS. 11 and 12, a winding belt mechanism may be used or a gear mechanism may be used. In short, a power transmission mechanism having a configuration in which a drive shaft for driving a water treatment facility and an output shaft of a drive device are rotatably connected to each other may be used.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of claims and the technical ideas described in the specification and drawings. It is possible. It should be noted that any shape, structure or material not directly described in the specification or drawings is within the scope of the technical idea of the present invention as long as the action and effect of the present invention are exhibited. For example, in the above embodiment, the lower surface of the cover member is fully open, but only a part of the cover member may be open. Further, the water treatment equipment to which the present invention is applied is not limited to the water treatment equipment of the sewage treatment plant and the pumping station, and any water treatment equipment may be used as long as it is the equipment for treating water.

In addition, the above description and the embodiments shown in each figure can be combined with each other as long as there is no contradiction in the purpose, configuration, and the like. Further, the above description and the description contents of each figure can be independent embodiments even if they are a part thereof, and the embodiment of the present invention is one embodiment in which the above description and each figure are combined. It is not limited to.

10 (10A, 10B) Drive device 30 (30A) Seal mechanism 31 Seal case 40 Seal 50 (50', 50A, 50B) Drive device waterproof cover 51 (51A, 51B) Cover member (drive unit cover member)
53 (53A, 53B) Opening 55 (55A, 55B) Intake passage 55a (55aA, 55aB) Outlet port 55b (55bA, 55bB) Inlet port 71 Drive shaft waterproof cover 100 (100A, 100B) Dust remover (water treatment equipment)
101 (101A, 101B) Drive shaft 160 Gas generator 13A, 13B Output shaft 200A, 200B Power transmission mechanism 203A Drive device side rotation shaft

Claims (6)

A drive cover member is attached to cover the drive unit with the drive shaft that drives the water treatment equipment.
The drive unit cover member is Rutotomoni is formed an opening which is released downward, other than the opening is configured to have a sealing property, provided in a portion where the drive shaft penetrates the drive unit cover member A seal case that covers the seal is connected to the drive unit cover member, and when submerged, the air in the drive unit cover member is sealed, and the volume V1 of the air in the drive unit cover member with respect to the assumed submersion depth is increased.
P0 x V0 = P1 x V1
However,
V0: Volume inside the drive unit cover member
P0: Atmospheric pressure
V1: Volume of air inside the drive unit cover member at the assumed submerged depth
P1: Pressure of air inside the drive unit cover member at the assumed submerged depth
The volume inside the drive unit cover member is V0, which is expected so that the water level in the drive unit cover member is located below the drive device even when the volume is V1 obtained by the above equation. Water treatment equipment with a waterproof cover for the drive unit. A water treatment facility provided with the waterproof cover for a drive device according to claim 1.
The seal provided at the portion where the drive shaft penetrates the drive unit cover member has a structure in which water is prevented from entering from the outside, a seal is arranged so as not to let the internal air out, and grease is supplied. A water treatment facility equipped with a waterproof cover for the drive unit, which is characterized by the fact that it has been used. A water treatment facility provided with the waterproof cover for a drive device according to claim 1.
The drive device receives a radial load of the drive shaft, and the seal case covering the seal is provided with a slide function for raising and lowering the drive shaft with respect to the water treatment equipment. Water treatment equipment with a cover. A water treatment facility provided with a waterproof cover for a drive device according to any one of claims 1 to 3.
A waterproof cover for a drive device is provided, which comprises forming an intake passage having an introduction port for introducing outside air inside the drive unit cover member by using the side wall portion and the opening of the drive unit cover member. Water treatment equipment. A water treatment facility provided with a waterproof cover for a drive device according to any one of claims 1 to 4.
A water treatment facility provided with a waterproof cover for a drive device, characterized in that a gas generating agent that generates gas when it comes into contact with water is installed in the drive unit cover member. A water treatment facility provided with the waterproof cover for a drive device according to claim 5.
A water treatment facility provided with a waterproof cover for a drive device, wherein the gas generating agent is installed at a plurality of positions having different mounting heights.

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