JP2554439B2 - Filtration device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtering device, and more particularly to a technique for maintaining a sufficient filtering function and suppressing the diameter of a cylindrical container body to a large size. is there.

[0002]

2. Description of the Related Art Conventionally, in a filtering device Aa, as shown in FIG.
As shown in (a), (b), (c), and (d), a filter holder 13 is provided on an upper portion of a bottomed cylindrical container body 1, and a large number of hanging holes 14 of the filter holder 13 are ... The bottomed cylindrical filter 2 ...
The upper end of the processing liquid introducing pipe 7 inserted therein is opened, the lid body 5 is provided on the container body 1 so as to be openable and closable, the lid body 5 is formed in a closed hollow shape, and the lower surface plate 17 of the lid body 5 is It is closely attached to the outer peripheral portion of each filter 2 and the upper outer peripheral portion of the treatment liquid introducing pipe 7,
The treatment liquid supply port 16 is formed at a position of the lower surface plate 17 facing each filter 2, and the treatment liquid introduction port 15 is formed at a position of the lower surface plate 17 facing the treatment liquid introducing pipe 7 from the treatment liquid introducing pipe 7. Of the treatment liquid enters the hollow portion X of the lid 5 through the treatment liquid introduction port 15 and is supplied into the respective filters 2 from the treatment liquid supply port 16 so that the treatment liquids filtered by the filter 2 join together. Then, it is configured so as to flow out from the processing liquid outlet pipe 10 of the container body 1.

In the filtering apparatus Aa, the treatment liquid introducing pipe 7 for introducing the treatment liquid is provided vertically in the central portion of the container body 1.
An elbow-shaped receiving pipe E is connected to, and a connection port 8 is formed on a side portion of the container body 1. Further, conventionally, as shown in FIG. 10 (d), an O-ring B having a diameter sufficiently larger than that of the suspension hole 14 is arranged outside the suspension hole 14,
By pressing the lower surface plate 17 of the lid 5 against the O-ring B, the water tight state with the lid 5 is maintained, and the treated water is surely fed into the filter 2 from the processing liquid supply port 16 of the lower surface plate 17 of the lid 5. In this way, the watertight state is sufficiently maintained to avoid a shortcut in which the treated water does not pass through the filter 2 but passes through untreated.

[0004]

However, in such a structure, the elbow-shaped receiving pipe E is connected to the processing liquid introducing pipe 7 vertically provided in the central portion of the container body 1. Although the elbow-shaped receiving pipe E is piped from the outer peripheral portion of the container body 1 to the central portion thereof,
Passes through the outer periphery of the container body 1, and the receiving pipe E
In the outer peripheral portion through which the filter 2 passes, interference will occur in disposing the filter 2. Therefore, the filter 2 should be disposed in a substantially concentric shape at substantially equal intervals in the circumferential direction of the container body 1. Can not be. In this way, the dead space D in which the filter 2 cannot be set due to the interference in the elbow-shaped receiving pipe E is generated, and the filtering function space in the container body 1 is reduced accordingly, and the filtering capacity is reduced. In order to lower the filtration capacity and increase the filtration capacity, the diameter of the container body 1 must be increased, which leads to an increase in the size of the device and requires a large installation space. When the diameter is increased, there is a problem that a large amount of residual water is accumulated in the large-diameter container body 1 when the filter 2 is replaced.

Further, as shown in FIG. 10 (d), when the O-ring B having a diameter sufficiently larger than the flange 2a of the filter 2 is arranged, the occupied plane area when the filter 2 is provided becomes large, A filter having a large number of filters 2 ... Has a large diameter. The present invention has been made in view of such a problem, and its object is to rationally set the arrangement of the treatment liquid introduction pipe,
An object of the present invention is to provide a filtration device capable of suppressing the diameter of a cylindrical container main body to be compact while maintaining a sufficient filtration function, reducing the installation space and the amount of residual water.

[0006]

According to the present invention, a filter holder 13 is provided on an upper part of a bottomed cylindrical container body 1, and a plurality of hanging holes 14 of the filter holder 13 have bottomed cylinders. -Shaped filter 2 ...
The upper end of the processing liquid introducing pipe 7 inserted therein is opened, the lid body 5 is provided on the container body 1 so as to be openable and closable, the lid body 5 is formed in a closed hollow shape, and the lower surface plate 17 of the lid body 5 is A treatment liquid supply port 16 is formed at a lower surface plate 17 portion which is in close contact with the upper end outer peripheral portion of each filter 2 and the upper end outer peripheral portion of the treatment liquid introduction pipe 7, and faces the treatment liquid introduction pipe 7. A treatment liquid introduction port 15 is formed at a position of the lower surface plate 17, and the treatment liquid from the treatment liquid introduction pipe 7 passes through the treatment liquid introduction port 15 and the lid 5
Enters the hollow portion X of the container, and is supplied from the treatment liquid supply port 16 ... into the respective filters 2 ..., and the treatment liquids filtered by the filter 2 merge to form the treatment liquid outlet pipe 10 of the container body 1. In the filtering device that flows out to the outside, the suspension holes 14 of the filter holder 13 are arranged in a substantially concentric manner at intervals in the circumferential direction, and the suspension holes 14 are separated at intervals. A processing liquid introducing hole 3 that matches the processing liquid introducing port 15 is arranged in a part of the arranged circumferential direction, and a hanging hole 14 is also formed in the filter holder 13 at the center of the container body 1. The filter 2 is suspended and held in the suspension hole 14.

Further, a recessed stepped portion 19 is formed on the peripheral portion of the suspension hole 14 in the filter holder 13, and a flange 2a on the peripheral portion of the filter 2 is mounted on the recessed stepped portion 19.
Backup ring 2 with elasticity on the flange 2a
0 is mounted, and the upper peripheral surface of the backup ring 20 is pressed by the lower surface plate 17 of the lid 5 to maintain a watertight state.

[0008]

The treatment liquid introducing pipe 7 is arranged in a part of the same circumferential direction as the hanging holes 14 which are arranged at intervals in the circumferential direction in plan view, and the treatment liquid introducing pipe 7 is provided as in the conventional case. The pipe 7 does not interfere with the positions where the filters 2 are arranged, and avoids creating a dead space in the container body 1. Rather, the filter 2 is newly provided in the central portion of the container body 1 and the filter 2 is additionally installed to enhance the filtering ability. Further, since the filter 2 can be added, in order to maintain the filtering capacity of the filtering device having the treatment liquid introducing pipe 7 in the central portion, the diameter of the container body 1 can be reduced to be compact. The space is kept small, and the amount of residual water remaining in the container body 1 when the filter 2 is replaced is also reduced.

Further, by holding the elastic backup ring 20 mounted on the flange 2a of the filter 2 with the lid 5, the watertight state with the lid 5 is maintained,
The treatment liquid is surely supplied into the filter 2 to avoid a short circuit of the treatment liquid that does not pass through the filter 2. Then, unlike the conventional case where the O-ring is provided on the outer circumference of the filter 2, it is not necessary to increase the occupied flat area for installing one filter 2. Also in this point, the outer diameter of the container body 1 can be suppressed to a small size, the size can be reduced, and the amount of residual water can be suppressed.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. A disc-shaped filter holder 13 is attached to the opening at the top of the bottomed cylindrical container body 1. A large number of suspension holes 14 ... Are formed in the filter holder 13. The bottomed cylindrical filter 2 is suspended and held in these suspension holes 14. The treatment liquid introducing pipe 7 is vertically risen and introduced into the container body 1 from the connection port 8 formed on the side thereof, and the upper end portion of the treatment liquid introducing pipe 7 is guided to the filter holder 13. Formed treatment liquid introduction hole 3
And is projected upward.

A lid 5 is attached to the container body 1 at a horizontal axis 4 so as to be openable and closable. The lid 5 is formed in a closed hollow shape from an upper plate 6 bent in a dome shape and a lower plate 17 having a flat plate shape. Then, the lower surface plate 17 of the lid 5 is brought into close contact with the outer peripheral portion of each filter 2 and the upper peripheral portion of the upper end of the treatment liquid introducing pipe 7 in a configuration as shown in FIG. Processing liquid supply port 1
6 is formed, and a treatment liquid introduction port 15 is formed at a portion of the lower surface plate 17 facing the treatment liquid introduction pipe 7.

Then, the treatment liquid from the treatment liquid introduction pipe 7 flows into the hollow portion X of the lid 5 through the treatment liquid introduction port 15, and then enters the treatment liquid supply port 16 ... A filtering device A is configured in which the processing liquids supplied and filtered by the filter 2 merge at the lower portion of the container body 1 and flow out to the outside from the processing liquid outlet pipe 10 of the container body 1. The shape and form of the filter 2 can be changed in various ways.

Then, as shown in FIG. 3, the suspension holes 14 of the filter holder 13 are replaced by the filter holder 1.
3. A part of the suspension holes 14 ... Which are arranged in a substantially concentric manner at an outer peripheral portion of the suspension member 3 in the circumferential direction with a space therebetween in the circumferential direction, and are further arranged with a space in the circumferential direction in this manner. In, the treatment liquid introducing hole 3 is formed. That is, the treatment liquid introduction hole 3
Are formed substantially concentrically on the outer peripheral portion of the filter holder 13 together with a large number of suspension holes 14. A suspending hole 14 is formed in the filter holder 13 at the center of the container body 1, and the filter 2 is also suspended and held in the suspending hole 14 at the center.

As described above, the processing liquid introducing pipe 7 is disposed at a part in the same circumferential direction as the hanging holes 14 which are circumferentially spaced from each other, and the treating liquid introducing pipe 7 is provided as in the conventional case. Since it does not interfere with the position where the filters 2 are arranged, it is possible to avoid creating a dead space in the container body 1, and rather to install the filter 2 in the center of the container body 1. To add more, add filter 2
In order to improve the filtering ability and maintain the filtering ability in the filtering device having the treatment liquid introducing pipe 7 in the central portion, the diameter of the container body 1 can be made small and compact, and the installation space can be reduced. Keep it small. Then, the diameter of the container body 1 is reduced in this way, and the filter 2
The amount of residual water remaining in the container body 1 can be suppressed to a small amount when exchanging ...

By the way, as shown in FIG. 5, the recessed stepped portion 1 is formed around the hanging hole 14 of the filter holder 13.
9 is formed. The filter 2 is placed in the recessed stepped portion 19.
The peripheral flange 2a is mounted. Then, an annular backup ring 20 having elasticity is placed on the flange 2a, and the upper peripheral surface of the backup ring 20 is pressed by the lower surface plate 17 of the lid body 5 and the lower surface plate 17 of the lid body 5 and the filter. A sufficient watertight state is maintained between the two and the treated water so as not to pass through the filter 2 and to escape to the bottom of the container body 1. The backup ring 20 is formed by annularly forming a stainless steel plate material having an L-shaped cross section, and elastically sealing a horizontal water piece 20a with an elastic watertight material 20b made of rubber or silicon resin. The configuration of the backup ring 20 can be modified in various ways. In the figure, reference numeral 55 denotes a lock, which locks the closed lid 5 to the container body 1 to maintain the closed state.

By the way, the lid 5 can be opened and closed manually, and its configuration will be described in detail below.
The opening / closing configuration of the lid 5 is, for example, Japanese Patent Publication No. 2-415.
A chain block having a well-known configuration disclosed in, for example, Japanese Patent No. 15 is used, and in addition to such a configuration, various design changes can be made to the opening / closing configuration. 6 and 9, a load sheave 23 is rotatably held at the center of the side plates 21 and 22 kept at a constant interval.
24 is a drive shaft integrally mounted on the load sheave 23,
The drive shaft 24 is provided with a right screw 24 a on a shaft portion protruding from one side plate 22. The driven member 25 is screwed into the drive shaft 24 nearer to the side plate 22.
A drive member 26 having a switching gear 26a is screwed on the side farther from.

A pressing member 27 is fitted to the boss portion 25a of the driven member 25 between the driven member 25 and the driving member 26. The pressing member 27 is a boss portion on the driven member 25 side. The pawl gear 28 and the friction member 29 are attached to 27A, and the friction member 20 is attached to the boss portion 27A on the drive member 26 side. As shown in FIG. 8C, the ratchet wheel 28 has three engaging recesses 28a formed at equal intervals in the radial direction on the inner peripheral surface of the mounting portion to the pressing member 27. On the other hand, on the outer peripheral surface of the boss portion 27A of the pressing member 27, reciprocating rotation in the rotation direction is allowed within the engaging recess 28a of the ratchet wheel 28.
Three engaging protrusions 27a having a slightly shorter circumferential length are formed [see FIGS. 8 (a) (c) (d)], and a constant depth is provided on the outer peripheral surface of the side surface in contact with the ratchet wheel 28. Annular notch 27b
Is provided. In the through hole of the pressing member 27 fitted to the driven member 25, a spring 31 for pressing the driving member 26 outward with respect to the driven member 25 is mounted. The drive shaft 24 is provided with a small-diameter screw portion 24b at the left end, and a washer 32 held by a nut 33 that is screwed into the small-diameter screw portion 24b is rotated in a loosening direction.
6 is prevented from falling off the drive shaft 24.

Reference numeral 34 denotes a shaft fixed to the lower part of the side plates 21 and 22, and a ratchet pawl 36 which is pressed by the spring 35 toward the ratchet wheel 28 is attached to a portion of the shaft 34 projecting from the side plate 22. The cover wheel 2 when the lid 5 is opened and closed.
It prevents the reversal of 8. Further, a mounting base 38 on the side of the container body 1 is attached to the shaft 34 between the side plates 21 and 22 via a connecting fitting 37. Reference numeral 39 denotes a load chain wound around the load sheave 23, and a connecting metal fitting 40 is provided at an upper end of the load chain 39, and is connected to the lid body 5 via an arm 56 extending from the lid body 5 side. ing. Thus, the lid 5 can be opened and closed according to the winding and unwinding of the load chain 39.

The switching member 26a of the drive member 26 is housed in the operating lever 42. The operating lever 42 is composed of an inner lever case 43 and an outer lever case 44 which are separately formed. The inner lever case 43 has a circular shape including a circumferential surface 43a that slidably contacts the outer circumferential surface of the pressing member 27 and a locking surface 43b having a circular opening 43c that is locked by the annular notch 27b of the pressing member 27. The inner lever case 43 is formed with a protrusion.
Has its outer peripheral portion bent at a right angle in a direction opposite to the protruding side of the circumferential surface 43a. The outer lever case 44 is integrally connected to the inner lever case 43 by a plurality of screws 45 and nuts 46. The operation gripping portion 26b of the drive member 26 corresponds to the operation gripping portion 26b. 26
A circular opening 44a is provided for inserting b so that it does not contact.

A rotation direction switching pawl 48, which is rotatably held by a shaft 47 with respect to both lever cases 43 and 44, is housed in the operation lever 42 on the upper side of the drive member 26. 49 is a spring 50 for connecting the upper end of the rotation direction switching pawl 48.
A pressing member that is urged downward by the pressing member 49.
Is a rotation direction switching claw 48 whose rotation is switched in a predetermined direction by a handle 51 attached to a shaft 47.
The switching gear 26a is constantly pressed. Also, the side plate 22
On the left side of the driven member 25, the friction member 29, the ratchet 2
8 and the brake cover 52 that covers the entire ratchet pawl 36 that engages with the ratchet wheel 28 contacts the inner lever case 43 by using a plurality of screws 53 and nuts 54 that keep the side plates 21 and 22 at constant intervals. It is installed not to.

Thus, the bifurcated rotation direction switching claw 48 is formed.
When the load of the lid body 5 is applied in a state where the lid body 5 is locked by the switching gear 26a (when the lid body 5 is in the process of opening and closing), the load sheave 23 and the drive shaft 24 integrally attached to the load sheave 23.
Is slightly rotated clockwise as viewed from the right side of FIG. Since the screw portion 24a of the drive shaft 24 is right-threaded, when the drive shaft 24 is slightly rotated, the drive member 26 is prevented from rotating by the rotation direction switching pawl 48 that is screwed into the screw portion 24a. Moves toward the side plate 22, and presses the pressing member 27, the ratchet wheel 28, and the friction member 29 via the friction member 30.
Is applied to the surface of the driven member 25 whose position is fixed at the step portion of the drive shaft 24, and the braking force also acts on the surface of the driven member 25. Moreover, at this time, since the ratchet wheel 28 is prevented from rotating in the reverse direction by the ratchet pawl 36, the drive shaft 24 and the load sheave 23 do not rotate after a slight rotation, and the load of the lid body 5 is held as it is. It

When the operating lever 42 is operated in the clockwise direction in this state, the rotation direction switching claw 48 rotates the drive member 26 in the opening direction of the lid 5, so that the friction member 30, which is integrally rotated by the drive member 26, Pressing member 27, ratchet 2
8, the friction member 29, and the driven member 25 rotate the load sheave 23 in the opening direction of the lid 5 to open the lid 5 connected to the connecting fitting 40 by the operation amount of the operation lever 42. On the other hand, when the rotation direction switching claw 48 is engaged with the switching gear 26a in the opposite manner to the above, the drive member 26 is moved leftward in FIG. Since the pressing is stopped, the friction member 30, the pressing member 27, the friction member 29, and the driven member 2
5 is rotated in a direction of closing the lid 5 together with the drive shaft 24 by the lid 5 connected to the connecting fitting 40, and the drive member 26, which is prevented from being rotated by the rotation direction switching pawl 48, becomes the friction member 30. The lid body 5 rotates in the closing direction until it is pressed to stop the rotation of the drive shaft 24.

That is, when the operating lever 42 is reciprocated,
Bifurcated rotation direction switching claw 48, spring 50, drive member 2
6. The selected one-way operation force is taken out through the one-way operation force take-out mechanism such as the switching claw wheel 26a, the load chain 39 is wound down, and the lid body 5 is rotated about the horizontal axis 4 to be opened. By rotating and swinging the bifurcated rotational direction switching pawl 48, the operating force extraction direction is changed by switching the engaging direction with the switching pawl wheel 26a, and the same reciprocating operation of the operating lever 42 is performed. The load chain 39 is unwound by utilizing the own weight of the lid body 5, and the lid body 5 is rotated downward, so that the lid body 5 can be opened and closed manually.

In short, when the operation lever 42 is reciprocally operated, the swinging of the bifurcated rotation direction switching claw 48 is changed.
Any mechanism may be used as long as it can wind up and rewind the load chain 39. In such a case, when the lid body 5 is fully opened, the lid body 5 is opened and rotated, but is stopped at about 88 ° before about 90 °. The lid 5 is urged to rotate in the closing direction by its own weight, and the lid 5 is unwound by the load chain 39.
The lid 5 is closed by utilizing its own weight. An air vent hole 57 is formed at the top of the lid 2, which is the uppermost portion, and the treatment liquid introducing pipe 7 is provided in the hollow portion X of the lid 2.
As the treatment liquid is introduced through the air vent hole 5
The internal air can be vented from 7.
In such a case, the treatment liquid introducing pipe 7 is arranged at a position apart from the central portion of the lid body 5 so that the treatment liquid from the treating liquid introducing pipe 7 does not reach the air vent hole 57 directly. The vent hole 57 can be provided at the top of the central portion of the lid 5, and thus the air vent hole 57 can be provided in the lid 5.
It can be provided in the central portion of the above, and the internal air of the hollow portion X can be smoothly extracted, and thus the internal air can be smoothly exhausted without leaving the internal air, and the processing liquid can be smoothly introduced. That is, when the air vent hole is provided at a position apart from the top of the lid 5 as in the conventional case of FIG. 10, it is not possible to exhaust all the air in the hollow portion X of the lid 5, and therefore, the treatment liquid. Is likely to be hindered.

[0025]

As described above, according to the present invention, the suspending holes of the filter holder are arranged in a substantially concentric manner at intervals in the circumferential direction, and the suspending holes are arranged in the circumferential direction at intervals. A treatment liquid introduction hole that matches the treatment liquid introduction port is arranged in a part of the above, and a hanging hole is also formed in the filter holder part in the central part of the container body, and the filter is hung and held in this hanging hole. In other words, the treatment liquid introducing pipe is arranged in a part in the same circumferential direction as the hanging holes that are spaced apart in the circumferential direction, and the filter is arranged in the treatment liquid introducing pipe as in the conventional case. Avoid creating dead space in the container body without interfering with the installation position, rather,
A filter can be newly installed also in the central part of the container body, the number of filters can be increased, the filtering capacity can be enhanced, and the filtering in the filtering device having the treatment liquid introducing pipe in the central part. When maintaining ability,
The diameter of the container body can be reduced, making it possible to make it compact,
There is an advantage that the installation space can be kept small, the diameter of the container body can be made small, and the amount of residual water remaining in the container body can be kept small when the filter is replaced.

Further, a recessed step portion is formed on the peripheral portion of the suspension hole in the filter holder, and a flange on the peripheral portion of the filter is mounted on the recessed step portion, and a backup having elasticity on the flange. Since the ring is mounted and the upper peripheral surface of the backup ring is pressed by the lower surface plate of the lid to maintain the watertight state, the backup ring which is elastic and is mounted on the flange of the filter is covered. By maintaining the watertight state with the lid by pressing with the body, it is possible to reliably supply the treatment liquid into the filter and avoid the occurrence of short circuit of the treatment liquid that does not pass through the filter.
Unlike the case where an O-ring is provided on the outer periphery of the filter, it is not necessary to increase the occupied flat area for installing one filter, and in this respect also, the outer diameter of the container body can be suppressed to a small size, which is compact. By making the diameter of the container main body smaller, it is possible to reduce the amount of residual water remaining in the container main body when the filter is replaced.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic front sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view of the above filter holder.

FIG. 4 is a bottom view of the above lid.

FIG. 5 is a cross-sectional view of a state in which the above filter is pressed by a lid.

FIG. 6 shows the above opening and closing device, (a) is a sectional view,
(B) is a partially exploded perspective view.

FIG. 7 is a front view of the above opening / closing device.

8A is a plan view of a pressing member, FIG. 8B is a vertical sectional view of the pressing member, FIG. 8C is a plan view of a ratchet wheel, and FIG. 8D is a cross-sectional view showing an operation of the ratchet wheel.

9A is a vertical sectional view of an inner lever case, FIG.
Is a front view.

FIG. 10 shows a conventional example, (a) is a schematic front view in which a part is broken, (b) is a schematic plan view in which a lid is opened, and (c) is a bottom plate of the lid and a treatment liquid introducing pipe. Explanatory diagram showing the relationship,
(D) is a partial expanded sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 2 Filter 3 Processing liquid introduction hole 13 Filter holder 14 Suspension hole 15 Processing liquid introduction port 16 Processing liquid supply port 17 Bottom plate 19 Recessed step 20 Backup ring

Claims (2)

(57) [Claims] 1. A filter holder is provided on an upper part of a bottomed cylindrical container body, and a bottomed cylindrical filter is suspended and held in a plurality of suspension holes of the filter holder and inserted into the container body. The upper end of the treated liquid introducing pipe is opened, the container body is provided with a lid that can be opened and closed, the lid is formed in a closed hollow shape, and the lower plate of the lid is the outer peripheral portion of the upper end of each filter,
The treatment liquid supply pipe is closely contacted with the upper end outer peripheral portion, a treatment liquid supply port is formed at a lower surface plate portion facing each filter, and a treatment liquid introduction port is formed at a lower surface plate portion facing the treatment liquid introduction pipe, The treatment liquid from the treatment liquid introduction pipe enters the hollow portion of the lid through the treatment liquid introduction port, is supplied into each filter from the treatment liquid supply port, and the treatment liquids filtered by the filter join together. A filtering device that flows out from a treatment liquid outlet pipe of a container body, wherein hanging holes of a filter holder are arranged in a substantially concentric manner at intervals in the circumferential direction, and these hanging holes are provided at intervals. A treatment liquid introduction hole that matches the treatment liquid introduction port is arranged in a part of the circumferential direction arranged by
A filtering device characterized in that a suspending hole is also formed in a filter holder portion in a central portion of a container body, and a filter is suspended and held in the suspending hole. 2. A backup holder having a recessed stepped portion formed on a peripheral portion of a suspension hole in a filter holder, a flange on a peripheral portion of the filter being mounted on the recessed stepped portion, and having elasticity on the flange. 2. The filtration device according to claim 1, wherein a ring is mounted, and an upper peripheral surface of the backup ring is pressed by a lower surface plate of the lid body to maintain a watertight state.