JP6833641B2 - Floating material removal device - Google Patents

Description

The present invention relates to a suspended matter removing device including a float that floats on the liquid surface.

Conventionally, a suspended matter removing device including a float that floats on the liquid surface is known (see, for example, Patent Document 1).

The above-mentioned Patent Document 1 includes a plurality of floats floating on the liquid surface and a floating material (suction pipe) having an inflow port (floating material suction port) connected to the float and arranged at a position near the liquid surface. The removal device is disclosed. A plurality of floats are provided so as to surround the circumference of the recovery pipe.

Japanese Unexamined Patent Publication No. 11-90426

However, since the suspended matter removing device of Patent Document 1 includes a plurality of floats, there is a problem that the device configuration becomes complicated. Further, since a plurality of floats are provided, there is a problem that the device becomes large and it takes time and effort to adjust the floating position of each float.

The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to simplify the device configuration, downsize the device, and easily adjust the floating position of the float. It is to provide a suspended matter removing device which can be performed.

The suspended matter removing device according to one aspect of the present invention is connected to a single float floating on the liquid surface and a float at a remote position directly below the float to generate a suction force for sucking the suspended matter near the liquid surface. A pump main body and a suction pipe having a suspended matter suction port connected to the pump main body and arranged at a position near the liquid level are provided , and the pump main body is provided with blades arranged in a pump chamber provided in the upper part of the pump main body. The pump discharge port of the pump body including the wheel is arranged on the upper part of the pump body at a position substantially the same height as the impeller, and is provided so as to face the side of the pump body . Here, the suspended matter is a substance that floats on the liquid surface, and includes sludge mass (scum), fallen leaves, algae, an oily substance separated from water, and a supernatant liquid.

In the suspended matter removing device according to one aspect of the present invention, as described above, a single float is connected to the float at a separated position directly below the float, and a suction force for sucking the suspended matter near the liquid surface is generated. A pump main body to be operated and a suction pipe connected to the pump main body and having a suspended matter suction port arranged at a position near the liquid level are provided. As a result, since the suspended matter removing device includes a single float, the device configuration can be simplified, the device can be miniaturized, and the position of the float can be easily adjusted as compared with the case where there are a plurality of floats. it can. In addition, since the pump body, which is a heavy object (determines the position of the center of gravity of the entire device), is placed at a separated position directly below the float, even if it is a single float, the entire device is suspended on the liquid surface. Can be stabilized. In addition, compared to the case where the pump discharge port faces up and down, one end is connected to the pump discharge port and the other end is connected to a purification device provided on the ground, etc., so that the hose can be easily connected (routed). Can be done.

In the suspended matter removing device according to the above one aspect, preferably, the suspended matter suction port is arranged outside the outer peripheral surface of the single float in the horizontal direction. With this configuration, the obstacles to the floating matter flowing toward the floating matter suction port are reduced as compared with the case where a plurality of floats are arranged so as to surround the floating matter suction port in the horizontal direction. Can be done. That is, it is possible to secure a wide path for the suspended matter flowing toward the suspended matter suction port in the circumferential direction of the suspended matter suction port. Therefore, it is possible to inhale a large amount of suspended matter from the suspended matter suction port and effectively remove the suspended matter.

In this case, preferably, the suspended matter suction port is separated from the float so as not to overlap the float in a plan view, and is formed smaller than the float. With this configuration, the device can be made smaller than the case where the suspended matter suction port is larger than the float.

In the floating matter removing device according to the above one aspect, preferably, the suction pipe is connected to the pump suction port provided on the float side surface of the pump body, and the pump suction port moves the center of the float and the pump body in the vertical direction. It is provided on the passing axis. With this configuration, when using a centrifugal impeller, the impeller is placed on the lower side of the pump suction port (opposite to the float side) and on the axis, and the impeller Since the rotation axis can be arranged so as to extend in the axial direction, even a single float can make the entire device more stable while floating on the liquid surface.

In this case, it is preferable that the float extends in the vertical direction in a substantially linear shape, and a connecting portion for connecting the float and the pump body is further provided. With this configuration, the connection can be arranged so as to extend in the axial direction passing through the center of the float and the pump body in the vertical direction, as compared with the case where the connection is curved in the horizontal direction. Therefore, even if it is a single float, the entire device can be further stabilized while floating on the liquid surface.

In the configuration including the connection portion, preferably, the suction pipe is provided integrally with the connection portion in the vicinity of the pump suction port. With such a configuration, the device configuration can be simplified as compared with the case where the suction pipe and the connecting portion are separated.

In the suspended matter removing device according to the above one aspect, preferably, a single float is provided so as to extend in the vertical direction at a substantially central portion of the float, and a liquid level for adjusting the height position of the float with respect to the suspended matter suction port. Includes level adjustment section. With this configuration, it is possible to facilitate the liquid level level adjusting work as compared with the case where a plurality of floats are provided and the liquid level is adjusted for each float. Further, as compared with the case where the structure for adjusting the liquid level is provided on the suction pipe side (below the liquid level), the liquid level adjusting portion is provided on the float that floats and is exposed on the liquid level. Therefore, from this point as well, the liquid level level adjustment work can be facilitated.

In the suspended matter removing device according to the above one aspect, preferably, one suspended matter suction port is provided around the float so as to be horizontally separated from the float. With this configuration, the device configuration can be further simplified and the device can be further miniaturized as compared with the case where a plurality of suspended matter suction ports are provided.

In the floating matter removing device according to the above one aspect, preferably, a plurality of floating matter suction ports are provided around the float so as to be horizontally separated from the float, and the plurality of floating matter suction ports are provided in a plan view of the float. They are arranged at approximately equal angular intervals in the circumferential direction. With this configuration, the plurality of suspended matter suction ports can attract the suspended matter from a wider angle range around the suspended matter removing device, so that the suspended matter can be effectively removed.

In the suspended matter removing device according to the above one aspect, preferably, a plurality of suspended matter suction ports are provided around the float so as to be horizontally separated from the float, and the plurality of suspended matter suction ports are respectively provided from the center of the float. They are arranged at approximately equal distances. With this configuration, the balance when the suspended matter removing device is floated on the liquid surface can be improved as compared with the case where one suspended matter suction port is provided.

According to the present invention, as described above, the device configuration can be simplified, the device can be miniaturized, and the floating position of the float can be easily adjusted.

It is a side view of the partial break which showed the whole structure of the suspended matter removing apparatus by 1st Embodiment of this invention. It is a top view which showed the whole structure of the suspended matter removing apparatus by 1st Embodiment of this invention. It is a top view which showed the whole structure of the suspended matter removing apparatus by 2nd Embodiment of this invention. It is a side view of the partial break which showed the whole structure of the suspended matter removing apparatus by 2nd Embodiment of this invention. It is a side view of the partial break which showed the whole structure of the suspended matter removing apparatus by 1st modification by 1st and 2nd Embodiment. It is a top view which showed the whole structure of the suspended matter removing apparatus by 1st modification by 1st and 2nd Embodiment. It is a side view of a partial break which showed the whole structure of the suspended matter removing apparatus by 2nd modification of 1st and 2nd Embodiment.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

[First Embodiment]
(Configuration of suspended matter removal device)
The configuration of the suspended matter removing device 100 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The suspended matter removing device 100 shown in FIG. 1 is configured to be installed in a state of floating in a liquid (for example, water) stored in a predetermined area (for example, a storage tank or a reservoir). Further, the suspended matter removing device 100 is configured to remove suspended matter by sucking the suspended matter near the liquid surface.

The suspended matter removing device 100 includes a single float 1 including a liquid level adjusting portion 11, a connecting portion 2, a suction pipe 3 including a suspended matter suction port 3a, and a pump body 4. The connection portion 2 and the suction pipe 3 are integrally provided in the vicinity of the pump suction port 4a.

<Float configuration>
The float 1 shown in FIG. 1 is made of a resin material and generally has a hollow spherical shape. Further, the float 1 is configured to float on the liquid surface. Further, the float 1 can generate a buoyancy of a predetermined size or more capable of suspending the suspended matter removing device 100.

The float 1 is arranged at the center of the float 1 in the horizontal direction, and has a through hole 1a that penetrates the float 1 in the vertical direction (Z direction).

The liquid level adjusting unit 11 has a shaft portion 12 and a regulating portion 13 attached to the shaft portion 12.

The shaft portion 12 has a rod shape extending substantially linearly in the vertical direction (Z direction). The vertical size of the shaft portion 12 is larger than the vertical size of the float 1. The shaft portion 12 is passed through the through hole 1a of the float 1. A male screw is formed on the outer peripheral surface of the shaft portion 12 over substantially the entire area in the vertical direction. An annular upper end portion 12a is integrally provided at the upper end of the shaft portion 12. The upper end portion 12a can be formed by, for example, an eye nut. A rope or the like is attached to the upper end portion 12a when the suspended matter removing device 100 is moored to restrict the horizontal movement of the suspended matter removing device 100, or when the suspended matter removing device 100 is lifted and moved. Is used.

The regulation unit 13 has a through hole (not shown) that penetrates the regulation unit 13 in the vertical direction. A female screw is formed inside the through hole. The regulating portion 13 is attached to the shaft portion 12 by screwing. The regulating portion 13 can be formed of, for example, a wing nut. The regulating portion 13 is configured so that the position in the vertical direction with respect to the shaft portion 12 can be adjusted by changing the screwing position with respect to the shaft portion 12.

The regulation unit 13 is provided above the float 1. The regulating portion 13 is formed larger than the through hole 1a of the float 1 in the horizontal direction. The regulation unit 13 is configured such that the float 1 suspended by the buoyancy abuts from below with the suspended matter removing device 100 installed on the liquid surface. That is, the regulation unit 13 is configured to restrict the upward movement of the float 1 with respect to the regulation unit 13 and the shaft unit 12, and is a member that determines the vertical position of the float 1.

A connecting portion 2 is fixedly provided at the lower end of the shaft portion 12. The liquid level adjusting unit 11 changes the screwing position of the regulating unit 13 to the shaft portion 12, so that the height of the float 1 with respect to the suction pipe 3 (suspended material suction port 3a) provided integrally with the connecting portion 2 is high. It is configured so that the position can be adjusted.

Specifically, the liquid level adjusting unit 11 is configured so that the regulating unit 13 moves in the vertical direction with respect to the shaft unit 12 by changing the screwing position between the regulating unit 13 and the shaft unit 12. There is. The shaft portion 12 is fixedly connected (attached) to the connecting portion 2 and the suction pipe 3 (floating material suction port 3a). The upper surface of the float 1 is always in contact with the regulating portion 13 due to buoyancy when it is floated on the liquid surface.

That is, the connecting portion 2 and the suction pipe 3 are configured to follow the vertical movement of the shaft portion 12. The upper end of the float 1 is always in contact with the regulating portion 13 due to buoyancy. Therefore, the liquid level adjusting unit 11 changes the screwing position between the regulating unit 13 and the shaft portion 12 to move the suction pipe 3 (floating material suction port 3a) up and down with respect to the liquid level on which the float 1 is floating. It is configured so that the position of the direction can be adjusted.

<Structure of connection part>
As shown in FIG. 1, the connecting portion 2 has a rod shape extending substantially linearly in the vertical direction. The connecting portion 2 is formed to be thicker than the shaft portion 12 of the liquid level adjusting portion 11. The shaft portion 12 of the liquid level adjusting portion 11 is fixed to the upper end of the connecting portion 2, and the pump main body 4 is provided (fixed) at the lower end of the connecting portion 2. That is, the connecting portion 2 connects the float 1 and the pump main body 4 via the liquid level adjusting portion 11 (shaft portion 12). The connecting portion 2 is arranged on the central axis α of the float 1 extending in the vertical direction. The central axis α is an example of the “axis” in the claims.

<Construction of suction pipe>
As shown in FIG. 1, the suction pipe 3 is made of, for example, a resin material. The suction pipe 3 has a tubular shape, and is a pipe for sucking the suspended matter near the liquid level from the suspended matter suction port 3a and carrying it to the pump main body 4. The suction pipe 3 has a suspended matter suction port 3a connected to the pump main body 4 and arranged near the liquid level.

Hereinafter, the detailed configuration of the suction pipe 3 will be described. The suction pipe 3 is formed of a first pipe portion 31, a second pipe portion 32, and a third pipe portion 33.

The first pipe portion 31, the second pipe portion 32, and the third pipe portion 33 are arranged near the pump main body 4 in this order. Inside the first pipe portion 31, the second pipe portion 32, and the third pipe portion 33, a flow path 3b that communicates with each other for passing an object to be processed is provided. A pump suction port 4a provided on the surface 40 on the float 1 side of the pump body 4 is connected to the lower end of the flow path 3b. A suspended matter suction port 3a is provided at the upper end of the flow path 3b.

The first pipe portion 31 extends substantially in the vertical direction. The first pipe portion 31 is arranged between the liquid level adjusting portion 11 and the pump main body 4. The first pipe portion 31 is arranged on the central axis α of the float 1 extending in the vertical direction. The lower end of the first pipe portion 31 is connected to the pump suction port 4a of the pump body 4 from above. The first pipe portion 31 is provided integrally with the portion of the connecting portion 2 on the pump suction port 4a side. That is, the first pipe portion 31 is also a part of the connecting portion 2. The first pipe portion 31 is a portion common to the connection portion 2 and the suction pipe 3 in the vicinity of the pump suction port 4a, and is a portion that integrally connects the connection portion 2 and the suction pipe 3.

As shown in FIG. 2, the upper end of the first pipe portion 31 is connected to one end of the second pipe portion 32. The second pipe portion 32 extends in the radial direction of the float 1 in a plan view. The second pipe portion 32 has a portion on the side of the first pipe portion 31 that overlaps with the float 1 and a portion that protrudes outward in the radial direction of the float 1 from the float 1.

As shown in FIG. 1, the second pipe portion 32 extends in a substantially horizontal direction. The second pipe portion 32 is arranged between the upper end and the lower end of the connecting portion 2 in the vertical direction. The lower end of the third pipe portion 33 is connected to the other end of the second pipe portion 32.

The third pipe portion 33 extends substantially in the vertical direction. The third pipe portion 33 is arranged outside the float 1 in the radial direction in the horizontal direction. A floating substance suction port 3a is provided at the upper end of the third pipe portion 33. The third pipe portion 33 has a ring-shaped end surface 33a at the upper end.

One floating material suction port 3a is provided around the float 1 so as to be horizontally separated from the float 1. The suspended matter suction port 3a is arranged outside the outer peripheral surface 10 of the float 1 in the horizontal direction. The suspended matter suction port 3a is an opening whose upper side is open, and is held at a position near the liquid level below the liquid level. Specifically, in the suspended matter removing device 100, even if the liquid level fluctuates up and down, the suction pipe 3 moves up and down together with the float 1, so that the suspended matter suction port 3a is always located near the liquid level below the liquid level. It is configured to be placed.

<Pump body configuration>
The pump body 4 shown in FIG. 1 is mainly formed of, for example, a resin material and a metal material having corrosion resistance such as stainless steel, and is a relatively lightweight pump as a pump. The pump body 4 is a submersible pump that is driven while being placed in a liquid. The pump main body 4 is configured to generate a suction force that sucks the suspended matter near the liquid surface from the suspended matter suction port 3a. The pump main body 4 is connected to the float 1 via a connecting portion 2 at a position separated from the float 1 immediately below the float 1. The pump main body 4 overlaps the float 1 in the vertical direction in substantially the entire area of the pump main body 4.

The pump main body 4 includes a centrifugal impeller 41 and a motor 42 that applies a driving force to the impeller 41 via a rotating shaft 42a. The rotation shaft 42a extends in the vertical direction. An impeller 41 is attached near the upper end of the rotating shaft 42a, and a motor 42 is arranged near the lower end of the rotating shaft 42a. The rotation shaft 42a is arranged on the central axis α of the float 1 extending in the vertical direction.

An impeller 41 is arranged inside the pump body 4, and a pump chamber 43 for sending sucked water (floating matter) from the pump suction port 4a to the pump discharge port 4b is provided. The pump suction port 4a is provided on the center of the float 1 and on the central axis α passing through the pump body 4 in the vertical direction. That is, the pump suction port 4a is provided directly below the center of the float 1. The pump discharge port 4b is provided so as to face the side of the pump main body 4 (direction substantially orthogonal to the Z direction).

One end of the hose H is connected to the pump discharge port 4b from the side. The other end of the hose H is connected to, for example, a purification device provided on the ground. In the purification device, oil-water separation treatment of suspended matter, filtration treatment, and the like are performed.

The pump main body 4 has a larger weight than the float 1, the connecting portion 2, and the suction pipe 3. Further, the pump main body 4 is provided at a position separated from the float 1 directly below the float 1 and at the lower end of the entire device. Therefore, the pump body 4 tends to continue to be positioned directly below the float 1 with respect to the float 1 floating on the liquid surface due to its own weight. That is, in the used state in which the float 1 is floated on the liquid surface, the pump main body 4 maintains the mutual positions of the pump main body 4 and the float 1 to stabilize the entire apparatus.

The suction pipe 3 extends laterally from between the pump body 4 and the float 1, but as described above, the weight of the suction pipe 3 is lighter than the weight of the pump body 4, so the pump body 4 The suction pipe 3 has almost no effect on the mutual position between the float 1 and the float 1. That is, the rotational moment exerted by the suction pipe 3 on the pump body 4 and the float 1 is negligibly small. By maintaining the mutual positions of the pump body 4 and the float 1, the suspended matter suction port 3a of the suction pipe 3 is arranged near the liquid level. This makes it possible for the suspended matter removing device 100 to exert a function of removing suspended matter by suction.

(Effect of the first embodiment)
In the first embodiment, the following effects can be obtained.

In the first embodiment, as described above, the pump main body 4 is connected to the single float 1 and the float 1 at a separated position directly below the float 1 and generates a suction force for sucking the suspended matter near the liquid surface. And a suction pipe 3 having a suspended matter suction port 3a connected to the pump main body 4 and arranged at a position near the liquid level. As a result, since the suspended matter removing device 100 includes a single float 1, the device configuration is simplified, the device is downsized, and the position of the float can be easily adjusted as compared with the case where there are a plurality of floats 1. It can be carried out. Further, since the pump body 4 which is a heavy object (determines the position of the center of gravity of the entire device) is arranged at a separated position directly below the float 1, even a single float 1 is suspended on the liquid surface. Can stabilize the entire device.

Further, in the first embodiment, as described above, the suspended matter suction port 3a is arranged outside the outer peripheral surface 10 of the single float 1 in the horizontal direction. As a result, in the horizontal direction, as compared with the case where a plurality of floats 1 are arranged so as to surround the floating matter suction port 3a, the obstacle of the floating matter flowing toward the floating matter suction port 3a can be reduced. it can. That is, it is possible to secure a wide path for the suspended matter flowing toward the suspended matter suction port 3a in the circumferential direction of the suspended matter suction port 3a. Therefore, a large amount of suspended matter can be sucked from the suspended matter suction port 3a to effectively remove the suspended matter.

Further, in the first embodiment, as described above, the suspended matter suction port 3a is separated from the float 1 so as not to overlap the float 1 in a plan view, and is formed smaller than the float 1. As a result, the device can be made smaller than the case where the suspended matter suction port 3a is larger than the float 1.

Further, in the first embodiment, as described above, the suction pipe 3 is connected to the pump suction port 4a provided on the surface 40 on the float 1 side of the pump body 4, and the pump suction port 4a is connected to the center of the float 1 and the float 1. The pump body 4 is provided on the central axis α passing in the vertical direction. As a result, when a centrifugal impeller 41 is used, the impeller 41 is arranged on the lower side of the pump suction port 4a (the side opposite to the float 1 side) and on the central axis α, and the blades are arranged. Since the rotation shaft 42a of the vehicle 41 can be arranged so as to extend in the direction of the central axis, even a single float 1 can make the entire device more stable while floating on the liquid surface.

Further, in the first embodiment, as described above, a connecting portion 2 is provided which extends in the vertical direction substantially linearly and connects the float 1 and the pump main body 4. As a result, the connecting portion 2 is arranged so as to extend in the direction of the central axis passing through the center of the float 1 and the pump body 4 in the vertical direction as compared with the case where the connecting portion 2 is curved in the horizontal direction. Therefore, the mutual positions of the float 1 and the pump body 4 can be more reliably held. Therefore, even with a single float 1, the suspended matter suction port 3a can be more reliably arranged at a position near the liquid surface. Even with a single float 1, the entire device can be further stabilized while floating on the liquid surface.

Further, in the first embodiment, as described above, the suction pipe 3 is provided integrally with the connection portion 2 in the vicinity of the pump suction port 4a. As a result, the device configuration can be simplified as compared with the case where the suction pipe 3 and the connecting portion 2 are separated.

Further, in the first embodiment, as described above, the single float 1 is provided so as to extend in the vertical direction at a substantially central portion of the float 1, and the height position of the float 1 with respect to the suspended matter suction port 3a is adjusted. A liquid level adjusting unit 11 is provided. As a result, it is possible to facilitate the liquid level level adjusting work as compared with the case where a plurality of floats 1 are provided and the liquid level is adjusted for each float 1. Further, as compared with the case where the suction pipe 3 side (below the liquid level) is provided with a configuration for adjusting the liquid level, the liquid level adjusting unit 11 is exposed on the float 1 floating on the liquid level. From this point as well, the liquid level level adjustment work can be facilitated.

Further, in the first embodiment, as described above, one floating material suction port 3a is provided around the float 1 so as to be horizontally separated from the float 1. As a result, the device configuration can be further simplified and the device can be further miniaturized as compared with the case where a plurality of suspended matter suction ports 3a are provided.

Further, in the first embodiment, as described above, the pump discharge port 4b of the pump main body 4 is provided so as to face the side of the pump main body 4. As a result, as compared with the case where the pump discharge port 4b faces in the vertical direction, one end of the hose H is connected to the pump discharge port 4b and the other end is connected to a purification device or the like provided on the ground. It can be done easily.

[Second Embodiment]
Next, the second embodiment will be described with reference to FIGS. 3 and 4. In this second embodiment, unlike the first embodiment in which the suction pipe 3 of the floating matter removing device 100 has one floating matter suction port 3a, the suction pipe 203 of the floating matter removing device 200 has three floating matter suction ports. An example having 3a will be described. The same configuration as that of the first embodiment is shown with the same reference numerals in the drawings, and the description thereof will be omitted.

(Configuration of suspended matter removal device)
As shown in FIG. 3, the suspended matter removing device 200 according to the second embodiment of the present invention includes a suction pipe 203.

The suction pipe 203 has a plurality of (three) suspended matter suction ports 3a. Specifically, the suction pipe 203 includes a plurality of (three) second pipe portions 32 extending horizontally from the upper end of the first pipe portion 31 (see FIG. 4), and each second pipe portion. It has a third pipe portion 33 extending upward from the outer end portion of the 32. That is, in the first embodiment, the suction pipe 3 is provided with one set of the second pipe portion 32 and the third pipe portion 33, but in the second embodiment, the suction pipe 203 is provided with a first set. Three sets of two pipe portions 32 and a third pipe portion 33 are provided.

A plurality (three) suspended matter suction ports 3a are provided around a single float 1 so as to be horizontally separated from the float 1. The plurality (three) suspended matter suction ports 3a are arranged at substantially equal angular intervals (approximately 120 degree intervals) in the circumferential direction of the float 1 in a plan view. The plurality (three) suspended matter suction ports 3a are arranged so as to be separated from the center of the float 1 (center axis α) by approximately equidistant d1. The plurality (three) suspended matter suction ports 3a are located at each apex of an equilateral triangle centered (center of gravity) on the central axis α of the float 1 in a plan view. The pump main body 4 is arranged at a position separated from the float 1 directly below the float 1 (central axis α).

The other configurations of the second embodiment are the same as those of the first embodiment.

(Effect of the second embodiment)
In the second embodiment, the following effects can be obtained.

In the second embodiment, as described above, a plurality of suspended matter suction ports 3a are provided around the float 1 so as to be horizontally separated from the float 1, and a plurality of suspended matter suction ports 3a are provided around the float 1 in a plan view. Arrange at approximately equal angular intervals in the circumferential direction of. As a result, the plurality of suspended matter suction ports 3a can attract the suspended matter from a wider angle range around the suspended matter removing device 200, so that the suspended matter can be effectively removed.

Further, in the second embodiment, as described above, a plurality of suspended matter suction ports 3a are provided around the float 1 so as to be horizontally separated from the float 1, and a plurality of suspended matter suction ports 3a are provided around the float 1, respectively. Place them at approximately equal distances from the center of the. As a result, the balance when the suspended matter removing device 200 is floated on the liquid surface can be improved as compared with the case where one suspended matter suction port 3a is provided.

The other effects of the second embodiment are the same as those of the first embodiment.

[Modification example]
In addition, it should be considered that the embodiment (Example) disclosed this time is an example in all respects and is not restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment (examples), and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims. ..

For example, in the first and second embodiments, the floating matter suction port (suction pipe) is arranged so as to be separated from the float, but the present invention is not limited to this. In the present invention, for example, the floating matter suction port 303a (suction pipe 303) may be arranged in contact with the float 1 as in the floating matter removing device 300 of the first modification shown in FIGS. 5 and 6. Specifically, the suspended matter removing device 300 may be configured as follows. The suspended matter removing device 300 is provided with a funnel-shaped suction pipe 303 that becomes smaller (thinner) toward the bottom. The float 1 is arranged inside and above the suction pipe 303. The suction pipe 303 has a plurality of suspended matter suction ports 303a provided in the radial direction of the float 1. The suspended matter suction port 303a is adjacent to the outer peripheral surface 10 of the float 1.

Further, in the first and second embodiments, an example in which the pump discharge port is configured to face sideways is shown, but the present invention is not limited to this. In the present invention, the pump discharge port 404b may be configured to face downward as in the suspended matter removing device 400 of the second modification shown in FIG. 7. In this case, one end of an L-shaped pipe member (for example, a street elbow or the like) E having an L shape (a shape in which the directions of the opening at one end and the opening at the other end are substantially orthogonal) is connected to the pump discharge port 404b, and the other end of the pipe member E is connected. The hose H may be attached to the side from the side.

Further, in the first and second embodiments, the floating matter suction port is formed smaller than the float in a plan view, but the present invention is not limited to this. In the present invention, the suspended matter suction port may be formed larger than the float in a plan view.

Further, in the first and second embodiments, an example in which the suspended matter suction port is arranged below the liquid surface is shown, but the present invention is not limited to this. In the present invention, a part of the suspended matter suction port may be arranged above the liquid surface, and a part of the suspended matter suction port may be arranged below the liquid surface.

Further, in the second embodiment, in a plan view, a plurality of suspended matter suction ports are arranged at substantially equal angular intervals in the circumferential direction of the float, but the present invention is not limited to this. In the present invention, it is not necessary to arrange the plurality of suspended matter suction ports at substantially equal angular intervals in the circumferential direction of the float in a plan view. For example, in a plan view, the suction pipe may be provided with two floating substance suction ports, and the two floating substance suction ports may be arranged at 90-degree intervals in the circumferential direction of the float.

Further, in the second embodiment, an example is shown in which a plurality of suspended matter suction ports are arranged so as to be separated from the center of the float by approximately equal distances, but the present invention is not limited to this. In the present invention, a plurality of suspended matter suction ports may be arranged so as to be separated from each other by different distances from the center of the float.

Further, in the first and second embodiments, an example is shown in which the distance between the suction pipe and the float is made smaller than the diameter of the suspended matter suction port at one end of the suction pipe on the floating matter suction port side. The invention is not limited to this. In the present invention, the distance between the suction pipe and the float may be set to be equal to or larger than the diameter of the suspended matter suction port at one end of the suction pipe on the floating matter suction port side.

Further, in the first and second embodiments, the example in which the rotation axis of the pump body is arranged so as to extend in the vertical direction is shown, but the present invention is not limited to this. In the present invention, the rotation axis of the pump body may be arranged so as to extend in the horizontal direction or the oblique direction.

Further, in the first and second embodiments, the example in which the float is formed into a spherical shape is shown, but the present invention is not limited to this. In the present invention, for example, the float may be formed into a shape other than a spherical shape such as a cylindrical shape or a prismatic shape.

Further, in the first and second embodiments, the example in which the float is formed into a hollow shape is shown, but the present invention is not limited to this. In the present invention, for example, the float may be formed into a solid shape.

Further, in the first embodiment, one floating material suction port is provided, and in the second embodiment, three floating material suction ports are provided, but the present invention is not limited to this. In the present invention, two or four or more suspended matter suction ports may be provided.

Further, in the first and second embodiments, an example in which a centrifugal impeller is used for the pump body is shown, but the present invention is not limited to this. In the present invention, an impeller other than a centrifugal type such as an axial flow type or a mixed flow type may be used for the pump body.

1 Float 2 Connections 3, 203 Suction pipes 3a, 303a Floating material suction port 4 Pump body 4a Pump suction port 4b, 404b Pump discharge port 10 Outer peripheral surface 11 Liquid level level adjustment unit 40 Float side surface of pump body 100, 200 , 300, 400 Floating matter remover α Central axis

Claims (10)

A single float that floats on the liquid surface,
A pump body that is connected to the float at a distance just below the float and generates a suction force that sucks suspended matter near the liquid surface.
A suction pipe having a suspended matter suction port connected to the pump body and arranged at a position near the liquid level is provided .
The pump body includes an impeller located in a pump chamber provided above the pump body.
A floating matter removing device in which the pump discharge port of the pump body is arranged on the upper part of the pump body at a position substantially the same height as the impeller, and is provided so as to face the side of the pump body. The suspended matter removing device according to claim 1, wherein the suspended matter suction port is arranged outside the outer peripheral surface of the single float in the horizontal direction. The floating matter removing device according to claim 2, wherein the floating matter suction port is separated from the float so as not to overlap the float in a plan view, and is formed smaller than the float. The suction pipe is connected to a pump suction port provided on the float side surface of the pump body.
The suspended matter removing device according to any one of claims 1 to 3, wherein the pump suction port is provided on the center of the float and on an axis that passes through the pump body in the vertical direction. The suspended matter removing device according to claim 4, further comprising a connecting portion that extends in a substantially linear shape in the vertical direction and connects the float and the pump body. The suspended matter removing device according to claim 5, wherein the suction pipe is provided integrally with the connection portion in the vicinity of the pump suction port. Claims 1 to 1, wherein the single float is provided at a substantially central portion of the float so as to extend in the vertical direction, and includes a liquid level adjusting portion for adjusting the height position of the float with respect to the suspended matter suction port. 6. The suspended matter removing device according to any one of 6. The floating matter removing device according to any one of claims 1 to 7, wherein one floating matter suction port is provided around the float so as to be horizontally separated from the float. A plurality of suspended matter suction ports are provided around the float so as to be horizontally separated from the float.
The suspended matter removing device according to any one of claims 1 to 7, wherein the plurality of suspended matter suction ports are arranged at substantially equal angular intervals in the circumferential direction of the float in a plan view. A plurality of suspended matter suction ports are provided around the float so as to be horizontally separated from the float.
The suspended matter removing device according to any one of claims 1 to 7, wherein the plurality of suspended matter suction ports are arranged so as to be separated from the center of the float by approximately equal distances.

Images