JP2000074242A - Valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably attach accessories such as an air vent valve in any case as well as to simply maintain a structure of a valve such as a ball-type check valve. SOLUTION: In a ball-type check valve 30 formed by housing a ball-type valve element 3 in a valve casing 1, a thick wall part 20 is formed on an inlet part 13 of the valve casing 1. A mounting eye 21 and an auxiliary seat 24 are formed in the circumferential different positions of the thick wall part 20. The mounting eye 21 is provided with a through hole 22 extending from the outside of the valve casing 1 to a passage 15. This mounting eye 21 is so constitute as to mount an air vent valve through connecting piping. The auxiliary seat 24 is provided with a recessed part 25 opened to the outside of the valve casing 1. When a hole is formed on the bottom part 26, the recessed part 25 and the passage 15 are communicated with each other, and therefore, the auxiliary seat 24 is formed on the mounting eye 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for controlling the flow of fluid by operating a valve body, and more particularly to a measure for improving the usability of the valve.

[0002]

2. Description of the Related Art Generally, while being attached to a pipe or the like,
2. Description of the Related Art A valve for adjusting a flow rate of a fluid flowing in a pipe or interrupting a flow by operating a valve body is well known. And as one type of this valve, for example,
BACKGROUND ART A ball check valve as disclosed in Japanese Utility Model Publication No. 2545929 is known.

[0003] The ball check valve is generally mounted on a submersible pump for transporting various liquids such as clean water, sewage or polluted water. Specifically, the ball-type check valve is connected to the downstream side of the discharge pipe of the submersible pump to prevent backflow of the pumped liquid. But,
The ball type check valve is configured such that a ball-shaped valve body is pushed up from a valve seat by a liquid material supplied by a pump to allow the liquid material to flow. Therefore, when air accumulates in the discharge pipe between the discharge port of the submersible pump and the inflow port of the check valve, the liquid material cannot push up the valve body, and the liquid material may not be pumped. is there.

[0004] In order to solve this problem, generally, an air vent valve is provided in the middle of the discharge pipe, and the air accumulated in the discharge pipe is discharged to the outside from the air vent valve. Conventionally, an air discharge hole is opened in the discharge pipe, and one end of the discharge pipe is connected to the air discharge hole by welding or the like, and then the air release valve is attached to the other end of the discharge pipe. On the other hand, the inventors of the present invention have proposed a method for facilitating the installation of the air vent valve (Japanese Patent Application No. 9-299835). Specifically, a mounting seat is provided on the valve box of the ball type check valve, and a through hole is formed in the mounting seat from the outside of the valve box to a flow passage in the valve box. One end of a discharge pipe is connected to a mounting seat formed on the valve box, and an air vent valve is provided at the other end of the discharge pipe.

[0005]

However, in the above-mentioned ball type check valve, when only one mounting seat is provided, the orientation of the mounting seat is determined by the mounting posture, and in some cases, the air release valve is provided. There is a problem that there is a possibility that the camera cannot be attached.

[0006] The above problem will be specifically described.
A pump unit including a submersible pump, a ball check valve, and an air release valve is often installed inside a manhole in a sewer system. The inside of the manhole is originally a narrow space, and the direction in which the air release valve is attached is limited when humans enter and exit during maintenance work and the like. Assuming that the pump has failed,
It is common to install two such pump units in the manhole. For this reason, an air vent valve must be attached so that the air vent valves of the pump units do not interfere with each other. Therefore, when the mounting seat is provided in the valve box of the check valve as described above, it is necessary to install the ball type check valve in such a posture that the mounting direction of the air release valve is a predetermined direction.

On the other hand, the ball type check valve is provided with an inspection port which opens to the side of the valve box, and maintenance work such as replacement of a valve element is performed from the inspection port. Therefore, when installing the ball-type check valve, it is necessary to install the ball-type check valve in such a position that such maintenance work can be performed.

On the other hand, when only one mounting seat is provided on the valve body of the ball check valve as described above, one of the direction of the inspection port and the mounting seat is determined. The other is automatically determined. For this reason, there is a possibility that the direction of the inspection port and the mounting direction of the air bleeding valve may not be set to the optimal directions, respectively, and in some cases, the air bleeding valve may not be mounted.

In order to solve the above problem, it is conceivable to provide a plurality of mounting seats on the valve box of the check valve. However, when a plurality of mounting seats are provided, it is necessary to plug a plug or the like into the unused mounting seat to close the through hole. Also,
In order to facilitate attachment of an accessory, a connection pipe for attaching the accessory, or a plug for closing the through hole, it is necessary to process the attachment seat. Specifically, for example, a tapered screw must be formed in the mounting seat so that the connection pipe and the like can be fastened to the tapered screw. For this reason, when a plurality of mounting seats are provided, it is necessary to process each of the mounting seats with the taper screw or the like. As a result,
The manufacturing process of the valve is complicated, and the configuration of the valve is also complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to securely attach an accessory in any case while maintaining a simple structure of a valve. The realization of a valve.

[0011]

According to the present invention, a mounting seat for mounting an accessory to a valve box of a valve and a spare seat for forming the mounting seat are provided.

More specifically, a first solution taken by the present invention is a valve box, and a distribution box formed inside the valve box, one end opening of which is formed as an inlet, and the other end formed of an outlet. It is assumed that the valve includes a passage, a valve chamber formed in the middle of the flow passage inside the valve box and having a valve seat, and a valve body housed in the valve chamber and seated on the valve seat.

[0013] A thick portion formed on the outer peripheral portion of the valve box, and a through hole formed in the thick portion and extending from the outer surface of the valve box to the flow passage, for mounting an accessory part. A seat having a concave portion with a bottom which is formed in a thick portion at a position circumferentially different from the mounting seat on the outer peripheral surface of the valve box, and which is open to the outside of the valve box; And a spare seat for forming the same.

[0014] A second solution taken by the present invention is:
In the first solution, the valve body is formed in a ball shape, and the valve seat is formed in a fluid inflow portion of the valve chamber so as to allow only one-way fluid flow. A valve chamber portion in which a valve chamber is formed, and an inlet portion formed continuously below the valve chamber portion and having an inflow port, and a thick portion is provided at the inlet portion of the valve box. To form.

[0015] A third solution taken by the present invention is:
In the second solution, the valve box is formed with an inspection port that opens to the valve chamber, and the inspection port is closed by a lid, and the mounting seat is moved in a direction perpendicular to the opening direction of the inspection port. In this case, two spare seats are provided, one of which is formed in the direction opposite to the opening direction of the inspection port, and the other is formed in the direction opposite to the mounting seat.

-Operation- In the first solution, a valve is attached to a pipe or the like, and a fluid flowing through the pipe flows into a flow passage inside the valve box. On the other hand, the valve body performs a predetermined operation, and switches between a closed state in which the valve body is seated on the valve seat and the flow passage is closed, and a communication state in which the valve body is separated from the valve seat and the flow passage communicates. The operation of the valve element controls the flow rate of the fluid, cuts off the flow, and the like.

Attached parts are attached to the mounting seat of the valve box directly or via a connection pipe or the like. Then, the flow passage and the accessory are in communication with each other through the through hole of the mounting seat. On the other hand, depending on the installation state of the valve, when the accessory is attached to the mounting seat, the accessory may interfere with other devices or the like. In such a case, the accessory parts are attached to a spare seat formed at a position different from the attachment seat in the circumferential direction. That is, a hole is made in the bottom of the concave portion of the spare seat to communicate the concave portion with the flow passage in the valve box, and the spare seat is formed as the mounting seat. Then, accessory parts are attached to the perforated spare seat. A plug or the like is provided in the through hole of the mounting seat, and the through hole is closed.

In the second solution, the valve is a ball-type check valve, and the ball-shaped valve element performs a predetermined operation, and only the flow of the fluid from the inlet to the outlet is permitted. You. Specifically, when a fluid pumped by a pump or the like flows into the flow passage from the inflow port, the ball-shaped valve body is pushed away by the fluid and separated from the valve seat. As a result, the flow passage is in a communicating state, and the fluid flows toward the outlet. Further, when the pump or the like stops and the fluid is no longer supplied, the valve body is seated on the valve seat by its own weight.
As a result, the flow passage is closed, and backflow of the fluid from the outlet to the inlet is prevented.

Since the thick portion is formed at the inlet of the valve body, the through hole of the mounting seat formed at the thick portion communicates with the flow passage between the valve seat and the inlet. When a hole is formed in the bottom of the concave portion of the spare seat to form the mounting seat, the concave portion of the spare seat communicates with the flow passage between the valve seat and the inflow port.

In the third solution, the lid is removed and maintenance work such as replacement of the valve is performed through the inspection port.
The valve, which is a ball-type check valve, is attached to a pipe or the like in such a position that the above-mentioned maintenance work can be performed. That is, the valve is mounted in a predetermined posture so that another device or the like does not come close to the inspection port and the lid cannot be detached.

On the other hand, since the mounting seat is formed in a direction perpendicular to the direction of the opening of the inspection opening, the situation in which the above-mentioned maintenance work cannot be performed due to the attachment of the accessory mounted on the mounting seat does not occur. However, if the accessory is attached to the mounting seat when the valve is attached in a posture in consideration of the direction of the inspection port, the accessory may interfere with other devices and the like. In such a case, the accessory parts are attached to the spare seat formed at a predetermined angle in the circumferential direction from the inspection port and the mounting seat.

[0022]

Therefore, according to the first solution,
Since the preliminary seat is formed in a direction different from that of the mounting seat, the preliminary seat can be formed in the mounting seat, and the accessory can be attached to the preliminary seat. That is, even when the accessory cannot be attached to the mounting seat, the accessory can be attached to the spare seat. As a result, in any case, it is possible to securely attach the accessory.

Further, if a plurality of mounting seats are provided to enable attachment of the accessory regardless of the valve position, it is necessary to close the through hole of the mounting seat to which the accessory is not attached by using a plug or the like. is there. That is, a new component such as the plug must be added. On the other hand, the concave portion of the spare seat has a bottom portion, and the concave portion and the flow passage in the valve body do not communicate with each other. Therefore, even when the spare seat is not used, it is not necessary to attach the above-mentioned components such as the plug to the valve. Further, the mounting seat needs to be machined with a taper screw or the like in order to easily attach an accessory part or a plug for closing the through hole. On the other hand, it is not necessary to perform such processing on the spare seat. When forming the spare seat on the mounting seat, the above-described tapered screw or the like may be machined. Therefore, even when the spare seat is provided in the valve box, the configuration of the valve can be kept simple and the manufacturing process of the valve can be kept simple.

In the second solution, the valve is specifically constituted by a ball check valve. The ball type check valve is configured such that a valve body is pushed up from a valve seat by a liquid material pressurized by a pump or the like to allow the flow of the liquid material. For this reason, if air exists upstream of the valve element, the valve element cannot be pushed up by the liquid substance only by compressing the air, and the liquid substance may not flow. On the other hand, a thick portion is formed at the inlet of the valve box, and a mounting seat is formed at the thick portion. For this reason, an air release valve, which is an accessory, is provided on the mounting seat, and air existing upstream of the check valve is discharged from the air release valve, so that the check valve can be reliably operated. Further, since the thick portion is provided with a spare seat, even if the air release valve cannot be attached to the attachment seat,
The spare seat can be formed in the mounting seat to mount the air release valve. As a result, in any case, the air vent valve as an accessory can be attached to the ball type check valve.

According to the third solution, the inspection port, the mounting seat, and the two spare seats are formed at the same angle in the circumferential direction. For this reason, even when the accessory is attached to the mounting seat, it is possible to reliably prevent the maintenance work of the valve from being hindered by the accessory. Further, even when the accessory cannot be attached to the mounting seat, the accessory can be securely attached to the spare seat formed in a different direction from the mounting seat.

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the ball type check valve 30 according to the present embodiment is formed by housing the valve element 3 in the valve box 1 in which the inside is formed in the flow passage 15. . The ball check valve 30 is provided in the submersible pump unit 50 as shown in FIG. The submersible pump unit 50 is installed, for example, in a sewer manhole.
Used when pumping liquids such as sewage in manholes. In FIG. 5, the ball type check valve 3 is shown for explanation.
The 0 mounting seat 21 is shown at a position different from the actual position.

The submersible pump unit 50 includes a submersible pump 51, a ball check valve 30, and an air vent valve 52. Specifically, a discharge pipe 53 is connected to a discharge port of the submersible pump 51. This discharge pipe 5
3 extends vertically upward while a flange 54 is provided at the upper end.
Are formed. The ball type check valve 30 according to the present embodiment is disposed at the upper end of the discharge pipe 53.
Of the ball type check valve 30 and the flange 54 of the ball type check valve 30
Are fastened and fixed by bolts 55.

The mounting seat 21 of the ball type check valve 30 is also provided.
Is connected to an air vent valve 52 as an accessory through a connection pipe 56. The air vent valve 52 allows air to flow out of the discharge pipe 53 while the submersible pump 5
It is configured to prevent the outflow of the liquid material pumped in 1. Further, the air vent valve 52 is configured to prevent air from flowing into the discharge pipe 53 from outside. The submersible pump unit 50 is arranged such that the submersible pump 51 is immersed in the liquid material, while the air vent valve 52 is located above the water surface of the liquid material.

Next, the configuration of the ball type check valve 30 will be described. The valve box 1 includes a valve chamber 12, an inlet 13,
And an outlet section 14 (FIG. 1).
reference). The valve chamber section 12 is located at the center of the valve box 1 in the vertical direction, and has a valve chamber 16 formed therein.
The inlet portion 13 is located below the valve chamber portion 12 and has a flange 17 formed at a lower end portion. In addition, the entrance 1
The outer peripheral part of the valve case 3 is formed with a thick part 20 thicker than other parts of the valve box 1. The outlet section 14 is connected to the valve chamber section 12.
, A flange 18 is formed at the upper end.

As shown in FIGS. 3 and 4, the inside of the valve box 1 is formed with a flow passage 15 extending in the vertical direction. The flow passage 15 opens at the lower end in the center of the flange 17 of the inlet 13 to form the inlet 6, and opens at the upper end in the center of the flange 18 of the outlet 14 to form the outlet 7. are doing.

The valve chamber 16 formed in the valve chamber 12 of the valve box 1 is located at the center of the flow passage 15 in the vertical direction, and has an arc-shaped cross section. In this valve chamber 16, the ball-shaped valve element 3 is movably accommodated. Although not shown, the valve body 3 is formed by coating a spherical metal core with elastic rubber or the like. A conical band-shaped valve seat 5 is provided below the valve chamber 16 at a fluid inflow portion where a liquid material flows from the flow passage 15 into the valve chamber 16, and a flow port 8 is formed inside the valve seat 5. ing. Above the valve chamber 16, a pair of ball guides 4 are formed to be curved from the rear side wall (the left side in FIG. 3) to the upper wall.

In the valve chamber 12 of the valve box 1, an inspection port 10 is located at the front side of the valve box 1 (the right side shown in FIG. 3), and the inspection port 10 is opened by the lid 2. It is closed. The lid 2 is attached to the valve box 1 by bolts 11. In addition, between the lid 2 and the valve box 1,
An O-ring 9 for sealing the inside of the valve box 1 in a watertight manner is provided. Then, the lid 2 is opened and closed, and the valve 3 is housed in the valve chamber 16 through the inspection port 10 and maintenance such as replacement of the valve 3 is performed.

The thick portion 20 formed at the inlet portion 13 of the valve box 1 has a mounting seat 21 and a spare seat 2 which are characteristic of the present invention.
4 are formed.

The mounting seat 21 is a seat for mounting the air vent valve 52. As shown in FIG. 4, the mounting seat 21 has a through hole 22 and is formed in a direction perpendicular to the opening direction of the inspection port 10. (See FIG. 2). The through hole 22 extends horizontally from the outer surface of the valve box 1 to the flow passage 15. A tapered screw (female screw) is provided on the side surface of the through hole 22.
23 are formed to facilitate pipe connection to the mounting seat 21.

The spare seat 24 is a spare seat when the air release valve 52 cannot be mounted on the mounting seat 21. The two spare seats 24 are formed, one of which is the inspection port 10.
Are formed in the direction opposite to the opening direction, and the other is formed in the direction opposite to the mounting seat 21 (see FIGS. 2 to 4). Further, each of the spare seats 24 has a concave portion 25 which is open to the outside of the valve box 1.
Are formed. Specifically, the concave portion 25 is
It is formed in a shape dug in a columnar shape in the horizontal direction from the outer surface of 0, has a bottom portion 26 and does not communicate with the flow passage 15. The bottom portion 26 reliably shuts off the flow passage 15 and the outside of the valve box 1, while the bottom portion 26 is crushed so that the mounting seat can be easily formed.

The relative positions of the mounting seat 21 and the spare seat 24 are not limited to the above-mentioned arrangement, but may be different. Further, in this embodiment, two spare seats 24 are provided, but the number of spare seats 24 may be one or two or more.

-Attaching Method of Air Vent Valve- The attachment of the air vent valve 52 to the ball type check valve 30 of the present embodiment is performed as follows.

First, the case where the air release valve 52 is mounted on the mounting seat 21 will be described. ) Fastened to 23. Then, the air vent valve 52 is attached to the other end of the connection pipe 56.

On the other hand, when the air release valve 52 cannot be attached to the mounting seat 21, the spare seat 24 is machined to form an attachment seat, and the air vent valve 52 is attached to the processed spare seat 24. Specifically, a hole is formed in the bottom 26 of the recess 25 formed in the preliminary seat 24, and the bottom 26 is crushed. By this processing, the bottom 26 of the concave portion 25 is removed, and the concave portion 25 communicates with the flow passage 15 and is formed in a through hole. Thereafter, a tapered screw (female screw) is formed on the inner surface of the concave portion 25 communicating with the flow passage 15. Reserve seat 2 as above
4 is processed to form a mounting seat. Then, an air vent valve 52 is attached to the processed spare seat 24 in the same manner as in the case of attaching to the attachment seat 21. Although not shown, a plug is attached to the mounting seat 21 formed from the beginning on the thick part 20 so as to close the through hole 22.

-Operation-The operation of the submersible pump unit 50 will be described. When the submersible pump 51 is driven, the liquid material flows through the discharge pipe 53 and flows into the ball check valve 30. In the ball type check valve 30, the valve body 3 is pushed up by the inflowing liquid.
Then, the pushed-up valve element 3 moves away from the valve seat 5 and moves along the ball guide 4. As a result, the flow path 15
Are in a communicating state, the flow of the liquid material from the inflow port 6 to the outflow port 7 is allowed, and the liquid material flows to the outflow port 7.
In this way, the liquid is pumped.

When the submersible pump 51 is stopped, the valve body 3 moves below the valve chamber 16 by its own weight, sits on the valve seat 5 and closes the flow opening 8. As a result, the flow passage 15 is closed, and the flow of the liquid material from the outlet 7 to the inlet 6 is blocked. When the liquid is supplied from the outlet 7, the valve 3 moves downward by the pressure of the liquid in addition to the weight of the valve 3, and the flow opening 8 is closed. In this way, the backflow of the pumped liquid is prevented.

On the other hand, when most of the accumulated liquid matter has been pumped, air may flow into the discharge pipe 53 from the suction port 57 of the submersible pump 51. And
When the submersible pump 51 is started in a state where air is stored in the discharge pipe 53, the valve 3 of the ball check valve 30 cannot be pushed up by the liquid substance only by compressing the stored air, and the ball-type reverse There is a possibility that the liquid material cannot be pumped up from the stop valve 30 first. On the other hand, in the submersible pump unit 50, the air in the discharge pipe 53 is discharged from the air vent valve 52. Therefore, according to the submersible pump unit 50, it is possible to reliably pump up the liquid material in any case.

According to the present embodiment, even when the air release valve 52 cannot be mounted on the mounting seat 21, the spare seat 24 is formed on the mounting seat 21 and the air release valve 52 is mounted. be able to. As a result, in any case, the air vent valve 52 can be attached to the ball check valve 30.

The inspection port 10, the mounting seat 21, and the two spare seats 24 can be formed at the same angle in the circumferential direction. As a result, even if the air release valve 52 is attached to the mounting seat 21, the maintenance operation of the ball check valve 30 is not hindered by the air release valve 52. Further, even when the air release valve 52 cannot be mounted on the mounting seat 21, the air release valve 52 can be securely mounted on the auxiliary seat 24 formed in a different direction from the mounting seat 21.

On the other hand, if a plurality of mounting seats 21 are provided so that the air release valve 52 can be mounted irrespective of the position of the ball type check valve 30, the through hole 22 of the mounting seat 21 to which the air release valve 52 is not mounted is provided. Need to be closed using a plug or the like. That is, new parts such as the plug must be added to the ball check valve 30. On the other hand, the recess 25 of the preliminary seat 24 and the flow passage 15 in the valve body 3
Not in communication with Therefore, even when the spare seat 24 is not used, the components such as the plug need not be attached to the ball check valve 30. Also, the mounting seat 21 includes
In order to easily attach the air vent valve 52 and a plug for closing the through hole 22, it is necessary to machine the tapered screw 23. On the other hand, it is not necessary to perform such processing on the preliminary seat 24, and when forming the preliminary seat 24 on the mounting seat 21, the above-mentioned tapered screw may be processed and formed. Therefore, even when the spare seat 24 is provided in the valve box 1, the configuration of the ball-type check valve 30 can be kept simple, and the manufacturing process of the ball-type check valve 30 can be kept simple. .

In this embodiment, the ball type check valve 30 is used.
However, the invention described in claim 1 can be applied not only to the ball-type check valve 30 but also to various valves. Further, the mounting seat 21 and the auxiliary seat 24 of the present embodiment are not limited to the mounting of the air vent valve 52, and may be used for mounting various accessory parts.

[Brief description of the drawings]

FIG. 1 is a front view of a ball check valve according to an embodiment.

FIG. 2 is a top view of the ball-type check valve according to the embodiment.

FIG. 3 is a sectional view taken along line AA in FIGS. 1 and 2.

FIG. 4 is a sectional view taken along line BB in FIG. 2;

FIG. 5 is a schematic sectional view showing the configuration of a submersible pump unit using the ball check valve according to the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 valve box 2 lid 3 valve element 5 valve seat 6 inflow port 7 outflow port 10 inspection port 12 valve chamber 13 inlet 15 flow passage 16 valve chamber 20 thick part 21 mounting seat 22 through hole 24 spare seat 25 recess 30 ball Type check valve

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor ▲ Kiyoshi Hara 1-1-1, Shinmeiwa-cho, Takarazuka-shi, Hyogo F-term in Industrial Machinery Systems Division, Shinmeiwa Kogyo Co., Ltd. 3H051 AA07 BB02 BB03 BB10 CC11 CC14 FF02 3H058 AA04 BB29 BB40 CA06 CB22 CB32 CC01 EE02 EE12 EE14

Claims (3)

[Claims] 1. A valve box, a flow passage formed inside the valve box, one end opening of which is formed as an inlet, and the other end opening formed of an outlet, in the middle of the flow passage inside the valve box. A valve having a valve chamber formed and having a valve seat, and a valve body housed in the valve chamber and seated on the valve seat, wherein a thick portion formed on an outer peripheral portion of the valve box; A through hole extending from the outer surface of the valve box to the flow passage, a mounting seat for mounting an accessory, and a thick portion at a position circumferentially different from the mounting seat on the outer peripheral surface of the valve box. A valve having a bottomed recess formed outside the valve box and having a spare seat for forming an attachment seat for attaching an accessory part. 2. The valve according to claim 1, wherein the valve body is formed in a ball shape, and the valve seat is formed in a fluid inflow portion of the valve chamber so as to allow only one-way fluid flow. On the other hand, the valve box includes a valve chamber portion in which a valve chamber is formed, and an inlet portion formed continuously below the valve chamber portion and having an inflow port. A valve formed at an inlet of a box. 3. The valve according to claim 2, wherein the valve box has an inspection port that opens into the valve chamber, and the inspection port is closed by a lid, and the mounting seat has an opening direction of the inspection port. The valve is formed in a direction perpendicular to the direction, and two spare seats are provided, one is formed in a direction opposite to the opening direction of the inspection port, and the other is formed in a direction opposite to the mounting seat.