JP4248464B2 - Filter holder - Google Patents

Description

  The present invention relates to a filter holder that is provided in the middle of various pipes in, for example, a nuclear power plant and collects metal or the like mixed in a liquid such as water passing through the pipe and is used for water quality management. .

  In order to prevent the foreign matter mixed in the water from being captured and flowing downstream, and to monitor dirt in the water, a filter is generally provided in the middle of the pipe. In either case, the filter must be replaced regularly or timely. In order to replace the filter, it is necessary to disassemble and remove the filter holder of the pipe provided with the filter, replace it, and reassemble it. For this purpose, not only must the apparatus be stopped, but the work of disassembling and replacing requires a great amount of labor and time, such as removing a plurality of bolts and re-tightening and confirming.

In order to solve such problems, a bypass is provided by branching from the pipe part provided with the filter, and a filter is provided also in this bypass so that even if the filter at the branch part becomes dirty and clogged, the bypass is bypassed. What has been proposed is also proposed (Patent Document 1).
Japanese Utility Model Publication No. 5-38493

  However, in the above-described configuration in which a bypass that bypasses and detours from the middle of the piping is provided, the structure is complicated in an apparatus that uses a large number of filters, and cannot be put to practical use in, for example, a large apparatus in a nuclear power plant or the like. At nuclear power plants, filters are exchanged as a normal work for water quality management, so it is required to minimize the possibility of radiation exposure during the work.

  The present invention has been proposed in view of the above, and an object of the present invention is to provide a filter holder in which a filter can be easily replaced by a simple operation and the possibility of radiation exposure can be reduced. is there.

According to the first aspect of the present invention, there is provided a main body case in which a through-hole through which a fluid passes is opened on a surface facing a storage space therebetween,
A holder main body that is detachably stored in the storage space of the main body case, and in which a filter is detachably loaded between the first divided material and the second divided material, each having a hole communicating with one of the through holes;
It is provided in the housing space of the main body case in a state of being superposed with the holder main body, and has a through passage that can communicate with the hole in the holder main body and a pipe that passes through the other through hole of the main body case, and changes the rotation phase. A rotating elevating member whose height changes by allowing
Consists of
The rotating elevating member is
A non-rotating member provided in a non-rotatable state in the storage space;
A rotation member that is superposed on the non-rotation member and is provided in a state of being rotatable in the storage space, and having an operation portion;
Provided on the concentric circles of the opposed portions of the rotating member and the non-rotating member, and the inclined surface formed on one side and the inclined formed on the other due to the change in the rotational phase of the rotating member and the non-rotating member An elevating mechanism that changes the distance between the rotating member and the non-rotating member by changing the positional relationship with the sliding portion that contacts the surface;
Consisting of
The lifting mechanism is
A plurality of inclined surfaces inclined downward in the same circumferential direction are formed on at least one opposing surface where the rotating member and the non-rotating member overlap with each other, and each inclined surface is positioned on the other opposing surface side. A flat upper surface is formed following the inclined end, and on the other facing surface, a plurality of sliding portions that slide in contact with the flat upper surface from the inclined surface are formed concentrically.
When the rotation member is rotated by rotating the operation portion in one direction, the sliding portion slides on the inclined surface, and the distance between the rotation member and the non-rotation member becomes gradually longer. When the moving member is further rotated, the sliding portion is placed on the flat upper surface, and the height of the rotating elevating member becomes the highest, and it is possible to operate while maintaining this state.
When the rotation member is rotated in the opposite direction by rotating the operation portion to the other side, the sliding portion deviated from the moved flat upper surface relatively slides on the inclined surface and is not in contact with the rotation member. The filter holder is characterized in that the distance between the rotary member and the rotary elevating member gradually decreases, and the holder body can be pulled out of the storage space in this state .

According to the first aspect of the present invention, when the rotating member is rotated by rotating the operating portion to one side, the sliding portion slides on the inclined surface, and the rotating member and the non-rotating member are When the rotating member is further rotated and the rotating member is further rotated, the sliding portion is placed on the flat upper surface and the height of the rotating elevating member becomes the highest, so that the holder body is maintained in a state where the holder body is strongly clamped in the vertical direction. Operation is possible.
Then, when the rotation member is rotated in the opposite direction by rotating the operation portion to the other side, the sliding portion deviated from the moved flat upper surface relatively slides on the inclined surface and Since the distance from the non-rotating member becomes gradually shorter and the height of the rotary elevating member becomes lower and the holder body can be pulled out from the housing space of the main body case, the filter can be easily removed. Then, the holder main body replaced with a new filter can be assembled simply by pushing it into the storage space of the main body case and operating the operation section. Therefore, the filter replacement operation can be completed in a short time with a simpler operation than before. For this reason, even when the working environment is inferior, the burden on the worker can be reduced, and at a nuclear power plant or the like, the possibility of radiation exposure can be reduced and the safety can be improved.
In addition, a plurality of inclined surfaces that are inclined downward in the same circumferential direction are formed on at least one opposing surface where the rotating member and the non-rotating member overlap, and the other opposing surface is in contact with the inclined surface. Since the elevating mechanism is formed by forming a plurality of sliding portions and flat upper surfaces that are in contact with each other on a concentric circle, the structure is simple and reliable.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of the filter holder, and FIG. 2 is a cross-sectional view.

  The filter holder 1 can be pulled out into the storage space 2 of the main body case 7 and the main body case 7 in which the through-holes 5 and 6 are opened in the upper surface member 3 and the lower surface member 4 facing each other with the storage space 2 therebetween. The holder main body 8 accommodated in the main body case 7 and a rotary elevating / lowering member 9 which is provided in the storage space 2 of the main body case 7 in a state of being superposed with the holder main body 8 and whose height changes.

  The main body case 7 is a strong metal substantially box-shaped member in which both sides of the upper surface member 3 and the lower surface member 4 are connected by the side surface member 10, and the front and rear surfaces facing each other are open. An upper through-hole 5 for connecting a pipe (upstream side) 11a is opened at substantially the center of the upper surface member 3, and a downstream side pipe 11b connected to the rotary elevating / lowering member 9 is penetrated at almost the center of the lower surface member 4. The lower through-hole 6 is opened. The lower through-hole 5 is opened larger than the pipe 11b so that the pipe 11b connected to the rotary elevating member 9 can move up and down.

  The holder main body 8 is overlapped under the first divided material 13 and a disk-shaped metal first divided member 13 having a hole 12a communicating with the upper through-hole 5 of the main body case 7 at the center. A disk-shaped second divided member 15 having a hole 12b communicating with the through-flow passage 14 of the elevating member 9 is provided at the center, and a core projecting in the lateral direction with the base end fixed to the peripheral surface of the second divided member 15. The first holding member 13 is lifted up by hand and can be easily removed from the second dividing member 15, and the filter 17 loaded between the dividing members 13 and 15. It is configured so that it can be easily replaced. The first divided material 13 and the second divided material 15 are stored in an auxiliary ring 8 ′ having an L-shaped cross section in a superposed state, and the lower surface of the second divided material 15 is in a state where the rotary elevating member 9 is at a minimum. Although separated from the rotary elevating / lowering member 9, when the rotary elevating / lowering member 9 rises, it penetrates through the opening of the auxiliary ring 8 ′ and comes into contact with the lower surface of the second divided material 15. The one-part material 13, that is, the holder main body 8 is configured to rise.

  The first divided member 13 is formed on the lower surface thereof with an umbrella-shaped liquid dispersion empty portion communicating with the hole 12a, and a sealing material 18 such as an O-ring is provided on the lower surface outside the empty portion. In addition, a sealing material 19 such as an O-ring is provided on the upper surface outside the hole 12a. On the other hand, the second divided material 15 is a disk having the same size as that of the first divided material 13, and a circular recess having a larger diameter than the above-described liquid dispersion empty portion is formed as a filter storage chamber 20 in the approximate center of the upper surface. A circular recess having a slightly smaller diameter is formed in a substantially central portion of the filter storage chamber 20 as a liquid gathering hollow portion communicating with the hole 12b.

  The filter 17 is in the form of a sheet or disk that is cut into a size that is just stored in the filter storage chamber 20 of the second divided material 15, and the material is a nonwoven fabric, a metal net, a mesh, or the like. It can be appropriately selected depending on the application. For example, when used for piping of a nuclear power plant, a filter made of cellulose is used.

Next, the rotary elevating member 9 will be described.
The rotary elevating / lowering member 9 has a through passage 14 that can communicate with the hole 12b of the holder main body 8 and a pipe 11b that passes through the other through-hole 6 of the main body case 7. A non-rotating member 21 provided in an immovable state, a rotating member 22 that is superposed on the non-rotating member 21 and provided in a rotatable state in the storage space 2, and a non-rotating member 22 The lift mechanism 23 is configured to change the distance between the rotating member 22 and the non-rotating member 21 by changing the rotational phase with the moving member 21.

  The non-rotating member 21 is a substantially cylindrical member made of metal having a lower half portion made smaller in diameter than the upper half portion. The non-rotating member 21 is formed with a through channel 14 penetrating in the axial direction, that is, in the vertical direction, in a substantially central portion. The upper opening of the through-flow passage 14 has a large diameter in the form of a dish, and a sealing material 24 such as an O-ring is provided on the upper surface outside the opening. A stopper 25 for preventing rotation is formed, and an elevating mechanism 23 described later is provided on the annular lower surface of the large diameter portion. The stopper 25 may have any configuration as long as the stopper 25 is configured to prevent rotation even when the non-rotating member 21 moves up and down. For example, the stopper 25 may be a stepped portion or an arm portion that is locked to the main body case 7.

  The rotating member 22 is a metal annular member having an L-shaped cross section having an opening that fits into a small-diameter portion of the non-rotating member 21, and extends a rod-shaped operation portion 27 outward from the outer periphery in the horizontal direction. A lifting mechanism 23 is provided on the upper surface of the L-shaped portion facing the lower surface of the large-diameter portion of the non-rotating member 21.

  The elevating mechanism 23 is provided on a concentric circle of a portion where the rotating member 22 and the non-rotating member 21 are opposed to each other, and includes an inclined surface formed on one side and a sliding portion formed on the other side and in contact with the inclined surface. This is a mechanism that changes the distance between the rotating member 22 and the non-rotating member 21, that is, the height, by changing the positional relationship. The embodiment of the drawings will be described in detail. A wedge-shaped inclined lift protrusion 29 having an inclined surface 28 inclined downward in the left rotation direction in plan view on the ring-shaped upper surface of the rotating member 22 is changed in phase by 120 degrees. Three places are provided on the ring-shaped lower surface of the large-diameter portion of the non-rotating member 21 with the downward projecting part having the same height as the inclined lift projecting part 29 as a sliding part 30 and changing the phase by 120 degrees. Configured.

  In the elevating mechanism 23 having such a configuration, as shown in FIG. 4, when the sliding portion 30 is disengaged from the inclined lift protrusion 29, the inclined lift protrusion 29 is located at the front and back (circumferential front and rear). The sliding part 30 enters between the sliding parts 30, and the inclined lift protrusion 29 enters between the sliding parts 30 located in the front and rear, and the distance between the rotating member 22 and the non-rotating member 21 is the shortest. Become. Therefore, the height of the rotary elevating / lowering member 9 is the lowest (initial position to lowest position).

  In the state where the height of the rotary elevating member 9 is the lowest, as shown in FIG. 1, the distance from the upper surface of the rotary elevating member 9 to the lower surface of the upper surface member 3 of the main body case 7 in the storage space 2 of the main body case 7 is the largest. Become. Therefore, in this state, the holder main body 8 can be inserted into the storage space 2 of the main body case 7 or pulled out in the reverse direction.

From this lowest state, when the rotation member 22 is rotated by manually rotating the operation portion 27 protruding outward to one side, the non-rotation member 21 is not rotated, so that the inclined lift protrusion 29 is The inclined surface 28 gradually rises under the sliding portion 30 and gradually raises the sliding portion 30 (FIG. 4B). Therefore, the non-rotating member 21 is raised and the distance between the rotating member 22 and the non-rotating member 21 is gradually increased. Then, when the rotating member 22 is sufficiently rotated (about 80 degrees in this embodiment), the sliding portion 30 is a flat upper surface of the inclined lift protrusion 29 (a flat upper surface formed following the inclined upper end of the inclined surface 28). ) And the distance between the rotating member 22 and the non-rotating member 21 is the highest (FIG. 4C). That is, the height of the rotary elevating / lowering member 9 is the highest (operating position or highest position).

In this way, when the height of the rotary elevating member 9, specifically, the position of the non-rotating member 21 is increased by rotating the operation unit 27, the holder main body 8 placed thereon is also operated by the operation unit 27. Gradually increases according to the amount of operation. When the holder main body 8 is placed at a predetermined position of the rotary elevating / lowering member 9, the upper opening of the through flow passage 14 of the rotary elevating / lowering member 9 is stable in a state where it communicates with the hole 12 b on the lower surface of the second divided member 15 of the holder main body 8. To do. When the non-rotating member 21 of the rotary elevating member 9 is raised, the hole 12a of the first divided member 13 of the holder main body 8 communicates with the through-hole 5 of the main body case 7, and when the holder main body 8 is raised to the highest position, The rotary elevating / lowering member 9 and the upper surface member 3 of the main body case 7 are sandwiched with a strong force. Then, the O-ring 19 provided on the upper surface of the holder main body 8 is pressed against the lower surface of the upper surface member 3 of the main body case 7 so that the communication portion between the through hole 5 of the main body case 7 and the hole 12a of the holder main body 8 is liquid-tight. Seal. Further, the O-ring 24 provided on the upper surface of the rotary elevating / lowering member 9 seals the communication portion between the hole 12b of the second divided member 15 of the holder main body 8 and the through channel 14 of the rotary elevating / lowering member 9 in a liquid-tight manner. Further, when the holder main body 8 is strongly sandwiched from above and below, the O-ring 18 between the first divided material 13 and the second divided material 15 seals the periphery of the filter storage chamber 20 in a liquid-tight manner, thereby leaking liquid. Do not use.
Accordingly, the operation is possible in this state, and the fluid flowing in from the hole 5 of the upper surface member 3 of the main body case 7 is filtered through the filter 17, and the filtrate is piped downstream from the through channel 14 of the rotary lifting member 9. It flows to 11b.

Next, an operation for replacing the filter 17 will be described.
When the operation unit 27 is rotated in the direction opposite to the above-described direction (the other side) with the rotary elevating member 9 in the highest state, the rotation member 22 rotates in the opposite direction, and the upper surface of the inclined lift protrusion 29 is When the sliding part 30 moves off the upper surface and rests on the inclined surface 28 and further rotates the rotating member 22, the sliding part 30 descends by its own weight while relatively sliding on the inclined surface 28. To do. Accordingly, the non-rotating member 21 of the rotary elevating / lowering member 9 is also lowered, and the distance between the upper surface of the rotary elevating / lowering member 9 and the lower surface of the upper surface member 3 of the main body case 7 is gradually increased. Pressure is released. When the operation unit 27 is further rotated back, the non-rotating member 21 is further lowered and the holder main body 8 is lowered. When the operation unit 27 is sufficiently rotated, the holder body 8 is lowered to the lowest initial position. The distance from the lower surface of the upper surface member 3 of the main body case 7 is maximized (FIG. 1). Therefore, in this state, the holder main body 8 can be easily pulled out from the storage space 2 of the main body case 7 while holding the grip portion 16 by hand. Then, the first divided material 13 of the pulled out holder body 8 is opened, the loaded filter 17 is taken out, the inside is cleaned, and the new filter 17 is loaded, and then the first divided material 13 is returned and closed. . Further, if necessary, the O-rings 18, 19, 24 are replaced with new ones, and in this state, the holder body 8 is returned into the storage space 2 of the body case 7. And as above-mentioned, by operating the operation part 27, the non-rotating member 21 of the rotation raising / lowering member 9 is raised and it returns to an operation state.

  In the above-described embodiment, the inclined lift protrusion 29 having the inclined surface 28 is provided on the upper surface of the rotating member 22, and the sliding portion 30 is provided on the lower surface of the non-rotating member 21. The elevating mechanism 23 is provided on a concentric circle in a portion where the rotating member 22 and the non-rotating member 21 are opposed to each other, and is formed on one side by a change in rotational phase between the rotating member 22 and the non-rotating member 21. The positional relationship between the surface 28 and the sliding portion 30 formed on the other side and in contact with the inclined surface 28 is changed so that the distance between the rotating member 22 and the non-rotating member 21 can be changed to move up and down. Any configuration is possible. For example, contrary to the above-described embodiment, the sliding portion 30 is projected upward on the upper surface of the rotating member 22, and the inclined lift protruding portion 29 having the inclined surface 28 on the lower surface of the non-rotating member 21 is projected downward. You may set up. Further, the sliding portion 30 may be formed with the inclined surface 28 so as to smoothly move up and down.

It is a top view of a filter holder. It is sectional drawing of the filter holder in a state where a rotation raising / lowering member is the lowest. It is a top view of a rotation member. It is explanatory drawing which shows the effect | action of a raising / lowering mechanism, (a) is a front view of the raising / lowering mechanism in the lowest position, (b) is a front view of the raising / lowering mechanism in the middle of rotating the rotation member, (c) is the highest. It is a front view of the raising / lowering mechanism in a position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter holder 2 Storage space 3 Upper surface member 4 Lower surface member 5 Through-hole of upper surface member 6 Through-hole of lower surface member 7 Main body case 8 Holder main body 9 Rotation raising / lowering member 10 Side surface member 11a Upstream piping 11b Downstream piping
12a 1st split material hole 12b of holder body 2b 2nd split material hole 13 of holder body 1st split material 14 Through passage 15 2nd split material 16 Grasping part 17 Filter 18 Sealing material (O-ring)
19 Sealing material (O-ring)
20 Filter storage chamber 21 Non-rotating member 22 Rotating member 23 Elevating mechanism 24 Seal material (O-ring)
25 Stopper 27 Operation part 28 Inclined surface 29 Inclined lift protrusion 30 Sliding part

Claims (1)

A main body case that opens a through-hole through which the fluid passes, on the opposite surface with a storage space in between,
A holder main body that is detachably stored in the storage space of the main body case, and in which a filter is detachably loaded between the first divided material and the second divided material, each having a hole communicating with one of the through holes;
It is provided in the housing space of the main body case in a state of being superposed with the holder main body, and has a through passage that can communicate with the hole in the holder main body and a pipe that passes through the other through hole of the main body case, and changes the rotation phase. A rotating elevating member whose height changes by allowing
Consists of
The rotating elevating member is
A non-rotating member provided in a non-rotatable state in the storage space;
A rotation member that is superposed on the non-rotation member and is provided in a state of being rotatable in the storage space, and having an operation portion;
Provided on the concentric circles of the opposed portions of the rotating member and the non-rotating member, and the inclined surface formed on one side and the inclined formed on the other due to the change in the rotational phase of the rotating member and the non-rotating member An elevating mechanism that changes the distance between the rotating member and the non-rotating member by changing the positional relationship with the sliding portion that contacts the surface;
Consisting of
The lifting mechanism is
A plurality of inclined surfaces inclined downward in the same circumferential direction are formed on at least one opposing surface where the rotating member and the non-rotating member overlap with each other, and each inclined surface is positioned on the other opposing surface side. A flat upper surface is formed following the inclined end, and on the other facing surface, a plurality of sliding portions that slide in contact with the flat upper surface from the inclined surface are formed concentrically.
When the rotation member is rotated by rotating the operation portion in one direction, the sliding portion slides on the inclined surface, and the distance between the rotation member and the non-rotation member becomes gradually longer. When the moving member is further rotated, the sliding portion is placed on the flat upper surface, and the height of the rotating elevating member becomes the highest, and it is possible to operate while maintaining this state.
When the rotation member is rotated in the opposite direction by rotating the operation portion to the other side, the sliding portion deviated from the moved flat upper surface relatively slides on the inclined surface and is not in contact with the rotation member. A filter holder characterized in that the distance between the rotary member and the rotary elevating member gradually decreases, and the holder body can be pulled out of the storage space in this state .

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