JP2001324040A - Submerged type air valve with repairing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a submerged type air valve with a repairing function capable of opening and closing an inlet of a valve chest by operating it from outside of an upper part of a cover on the air valve constituted of a small air hole valve seat and a large air hole valve seat. SOLUTION: A through part 16 is provided on a bottom part 14 of the valve chest 1, a check valve 5 to open and close the inlet 11 of the valve chest 1 and the through part 16 on the lower side of this inlet 11, a vertically communicated groove 33 is provided on the outside of a valve body guide 3, a push rod 54 screwed in a through hole female screw 24 provided outside of the large air hole valve seat 21 of the cover 2 and reaching the check valve 5 through the groove 33 and the through part 16 is provided, the inlet 11 is opened by the check valve 5 by rotating the push rod 54 from above the cover 2 and propelling it downward at the time of using it, and the inlet 11 is occasionally closed by the check valve 5 by reversely rotating this push rod 54 from above the cover 2 and retreating it upward at the time of repairing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air valve disposed in a water pipe for discharging air from the pipe, wherein the valve box is submerged in the pipe, and the inlet of the valve box is placed above the outside of the lid. The present invention relates to a submerged air valve with a repair function that can be opened and closed by operating from the side.

[0002]

2. Description of the Related Art Conventionally, there are the following air valves provided separately with a repair valve.

FIG. 23 shows the structure of Japanese Utility Model Registration No. 061811. Reference numeral 1 denotes a valve box provided with an inlet 11 at the bottom, and reference numeral 2 denotes a large air hole valve seat 2 communicating with the atmosphere.
1 is a lid formed with the small air hole valve seat 22 and attached to the valve box 1.

Numeral 3 is a valve guide having a specific gravity of 1 or less, which has a drain port 31 at the bottom and is mounted in the valve box 1 so as to open and close the small air hole valve seat 22 so as to be movable up and down. A floating valve element having a specific gravity of 1 or less is provided on the valve element guide 3 so as to be movable up and down so as to open and close the large air hole valve seat 21.

[0005] Here, a plurality of projections 32 for center positioning, which protrude in the centrifugal direction, are provided on the upper outer edge of the valve body guide 3. A base 12 on which the valve element guide 3 is seated is provided at the bottom of the valve box 1.

The valve box 1 is mounted on an on-off valve 9 on a vertical pipe 6 branched from a water pipe 63.

In such a configuration, the state shown in the figure is a case where air exists in the valve box 1 and the valve body guide 3
And the floating valve element 4 are located below. Therefore, air flows between the on-off valve 9, the inlet 11, and the base 12, the side of the valve body guide 3, the projection 32, the upper side of the valve body 4, and the large air hole valve seat 21.
Exhausted to the outside.

When the inside of the valve box 1 is filled with water, both the valve element guide 3 and the floating valve element 4 float. The valve body guide 3 closes the small air hole valve seat 22, and the floating valve body 4 closes the large air hole valve seat 21.

When the water pipe 63 has a negative pressure, the floating valve 4
And the valve body guide 3 descends to open the large and small air hole valve seats 21 and 22. At this time, water in the valve body guide 3 is discharged from the drain hole 31 and the floating valve body 4 can be lowered. To

When the inside of this air valve needs to be repaired, the on-off valve 9 for repair is closed to disassemble and repair this air valve.

The part to be repaired is the packing 41 attached to the floating valve body 4 and the small air hole valve seat 2.
In most cases, the valve box 1 itself is rarely repaired. Therefore, it is operated from above the outside of the lid 2 to operate the entrance 11.
Can be adopted, there is no need to provide a separate on-off valve 9 for repair. Further, by doing so, the lower portion of the valve box 1 can be submerged in the upright pipe 6 to reduce the overall height.

[0012]

Accordingly, an object of the present invention is to submerge the lower part of the valve box in a vertical pipe and operate the inlet of the valve box from above the outside of the lid to open and close. The aim is to obtain a submerged air valve structure with a repair function that can be performed.

[0013]

SUMMARY OF THE INVENTION An inlet is provided at the bottom, a pedestal is provided at the bottom inside, and a valve box having a mounting flange on the outside, and a large air hole valve seat mounted at the top of the valve box at the center. A lid having a small air hole valve seat at an eccentric position,
A valve body guide which is housed in this valve box so as to be movable up and down, opens and closes the small air hole valve seat, and has a projection for centering swelling in the upper outer edge in the centrifugal direction. The present invention is directed to an air valve that is movably housed and includes an idle valve body that opens and closes the large air hole valve seat.

A penetrating portion is provided at the bottom, and when a force is applied from above, the inlet and the penetrating portion are opened apart from the inlet and the lower surface of the penetrating portion. A check valve is provided below the inlet, which is configured to be in close contact with the inlet and the lower surface of the through portion so as to close the inlet and the through portion.

The outside of the side wall of the valve body guide and the above-mentioned projection are cut out to provide a groove that communicates with the top and bottom, and a through hole that penetrates the lid is provided outside the large air hole valve seat of the lid. A female screw is provided on the inner surface of the through hole, and a push rod which is screwed into the female screw and passes through the groove and the through portion to the check valve is provided, and a water seal for preventing water leakage from the through hole is provided. Provide a structure.

The mounting flange is located above the bottom.

When this mounting flange is mounted on the pipe flange at the tip of the vertical pipe of the water pipe, the valve box below the mounting flange is submerged in the vertical pipe.

In use, the push rod is propelled downward by rotating the push rod from above the lid to move the check valve away from the inlet and the lower surface of the penetrating portion so that the check valve can be removed from the inlet. The through-hole is opened, and at the time of repairing, the push-rod is rotated backward from above the lid to retreat the push-rod upward, so that the check valve is brought into close contact with the inlet and the lower surface of the through-hole, and these Close entrance and penetration.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. 1 is a valve box, 11 is an entrance provided in the bottom part 14, and 12 is a pedestal provided inside the bottom part 14.

Reference numeral 13 denotes a mounting flange that protrudes horizontally outside the valve box 1. The mounting flange 13 is provided with a bolt hole 131. The mounting flange 13 is larger than the bottom portion 14. It is located above.

A screw hole 18 for attaching the cover 2 is provided in the upper part of the valve box 1.

Reference numeral 2 denotes a lid. The lid 2 is provided with a bolt hole 28 for attaching to the valve box 1. Bolt 2
7 is screwed into the screw hole 18 through the bolt hole 28, and the lid 2 is attached to the upper part of the valve box 1.

A large air hole valve seat 21 is provided at the center of the lid 2, and a small rubber air hole valve seat 22 is attached to the tip of the cylindrical fitting 221 at an eccentric position below the large air hole valve seat 21. ,
The screw part 222 of the cylindrical metal fitting 221 is screwed into the lid 2.

The stopper 23 is fixed to the lid 2 by screwing its lower end to the same height as the lower end of the small air hole valve seat 22.

Reference numeral 25 denotes a small opening / closing valve attached to the lid 2. When this valve is opened / closed, the inside / outside of the valve box 1 can be closed or closed.

Reference numeral 202 denotes a protrusion protruding upward from the lid 2.
The protrusion 202 is provided with a screw hole 203, and the cover 7 is mounted on the protrusion 202 using the bolt 71.

Reference numeral 3 denotes a valve guide made of a material having a specific gravity of 1 or less. A drain hole 31 is formed at the bottom, and a protrusion 32 bulging in the centrifugal direction is provided at the upper outer edge. The projection 32 is for center positioning, and has a cutout 34 for air circulation.

The valve guide 3 is located on the base 12 and is housed in the valve box 1 so as to be vertically movable to open and close the small air hole valve seat 22.

Outside the valve body guide 3, a side wall 35 and the above-mentioned projection 32 are cut out to form a groove 33 communicating vertically. This is provided at two places of the center object.

Reference numeral 4 denotes a floating valve body made of a material having a specific gravity of 1 or less. The floating valve body 4 is housed in the valve body guide 3 so as to be vertically movable, and opens and closes the large air hole valve seat 21. 41 is a rubber packing attached to the floating valve body 4.

At the center of the bottom 14, two conical holes 16 are provided. At the bottom of the bottom 14, four internal threads 151 are provided.
The lower end 52 of the vertical shaft 51 has a larger diameter to serve as a stopper.

Four holes 53 are formed in the horizontal plate 5 made of a material having a specific gravity of less than 1 so that the vertical shaft 51 passes therethrough.
The horizontal plate 5 is moved up and down along the vertical axis 51 so that the entrance 11
And the above-mentioned penetrating part 16 is opened and closed. Vertical axis 51
Since the diameter of the lower end 52 is larger than the diameter of the hole 53, the horizontal plate 5 does not fall.

A penetrating hole which is located outside the large air hole valve seat 21 of the lid 2 and rotated through 90 degrees and -90 degrees from the small air hole valve seat 22 through the lid 2 Hole 24
The female screw 24 is provided on the inner surface of the through hole 241, and the male screw portion 541 of the push rod 54 is screwed into the female screw 24, and the push rod 54 is connected to the groove 33 and the through portion 16.
, The lower end of the push rod 54 contacts the upper surface of the horizontal plate 5. A cutout 542 for inserting a flathead screwdriver is provided at the upper end of the push rod 54.

Here, a water sealing structure for preventing water leakage from the through hole 241 to the outside is as follows.

A rubber ring 56 is fitted to a portion of the male screw portion 541 that is outside the lid 2, and 57 is a washer that wraps the rubber ring 56 inward from the outer diameter side and presses the rubber ring 56 from above. Is a hexagon nut for pressing the washer 57.

Here, the water that tends to leak from the through hole 241 through the gap between the female screw 24 and the male screw part 541 is pushed into the inside of the male screw part 541, and adheres to the upper surface of the convex part 201 of the lid 2. Sealed by water.

The packing 6 is attached to the pipe flange 61 at the tip of the vertical pipe 6 which branches the mounting flange 13 from the water pipe 63.
The lower portion 17 of the valve box located below the mounting flange 13 is submerged in the upright pipe 6 while being fastened with the bolt 132 and the nut 133 via the second.

The state shown in FIG. 1 is a case where air is present in the valve box 1, and the valve element guide 3 and the floating valve element 4 are located below. Therefore, the air in the upright pipe 6 is exhausted to the outside through the space between the inlet 11 and the pedestal 12, the side of the valve body guide 3, the notch 34, above the floating valve body 4 and the large air hole valve seat 21.

When the valve box 1 is filled with water, both the valve element guide 3 and the floating valve element 4 float as shown in FIG. In this way, the valve element guide 3 closes the small air hole valve seat 22 and the floating valve element 4
Closes the large air valve seat 21.

When the inside of the air valve needs to be repaired, the bolt 71 is removed and the cover 7 is removed as shown in FIG.

Then, the tip of a flathead screwdriver is inserted into the slot 542, and this screwdriver is rotated to push the push rod 5
4 is retracted upward as shown in FIG. At this time, the horizontal plate 5 is lifted upward by its own buoyancy, and is brought into close contact with the lower surfaces of the inlet 11 and the through portion 16 to close the inlet 11 and the through portion 16. At this time, the pressure inside the valve box 1 is maintained before the inlet 11 and the through portion 16 are closed.

Next, when the upper surface of the floating valve body 4 is pressed manually, the large air hole valve seat 21 is opened slightly, the pressure held in the valve box 1 is released, and the inside of the valve box 1 is become.

The inside of the valve box 1 can be brought to atmospheric pressure by opening a small on-off valve 25. In this case, the required force is smaller than when the upper surface of the floating valve body 4 is pressed manually.

The bolts 27 are removed, and the lid 2 is removed from the valve box 1, as shown in FIGS. At this time, the push rod 54 has a rubber ring 56, a washer 57, and a nut 58.

The reason why the inside of the valve box 1 is set to the atmospheric pressure as described above is to reduce the rotating force when the bolt 27 is rotated and loosened to remove the bolt 27.

Next, as shown in FIG. 18, the floating valve element 4 in the valve box 1
And the valve body guide 3 are taken out. Then, repair or replacement of the troubled part related to these can be performed.

After the repair or replacement of the failed part is completed, FIG.
5, the valve guide 3 and the floating valve 4 are placed in the valve box 1.

The push rod 54, rubber ring 56, washer 57,
The lid 2 is put on the valve box 1 while the nut 58 is kept. At this time, the push rod 54 passes through the groove 33 and the through portion 16. The bolt 27 is tightened so that the lower end of the push rod 54 contacts the upper surface of the horizontal plate 5.

Thereafter, the tip of a flathead screwdriver is inserted into the slot 542 of the push rod 54, and this driver is rotated to push the push rod 54 downward and push the horizontal plate 5 downward to open. At this time, the state is as shown in FIG.

Thereafter, the cover 7 is attached and the state shown in FIG. 13 is obtained.

A second embodiment will be described with reference to FIGS.

Reference numeral 30 denotes a valve guide made of a material having a specific gravity of 1 or less. A drain hole 31 is formed at the bottom, and a projection 32 bulging in the centrifugal direction is provided at the upper outer edge.
The protruding portion 32 is for center positioning, and has no cutout 34 for air flow, but has a window 36 for air flow in the side wall 35.

Outside the valve guide 30, a side wall 35 and the above-mentioned projection 32 are cut out to form a groove 33 communicating vertically. This is provided at two places of the center object.

The state shown in FIG. 10 is a case where air is present in the valve box 1, and the valve element guide 30 and the floating valve element 4 are located below. Therefore, the air in the vertical pipe 6 is
1. Between the pedestal 12, exhaust to the outside through the side of the valve body guide 3, the window 36, above the floating valve body 4, and the large air hole valve seat 21.

A third embodiment will be described with reference to FIG.

The through-holes 16 provided at two places on the center of the bottom 14 of the valve box 1 are recessed until they reach the inlet 11.

A fourth embodiment will be described with reference to FIGS.

Reference numeral 301 denotes a valve guide made of a material having a specific gravity of 1 or less. A drain hole 31 is formed at the bottom thereof, and a projection 32 bulging in the centrifugal direction is provided at the upper outer edge. The projection 32 is for center positioning, and has a cutout 34 for air circulation.

The valve body guide 301 is housed on the base 12 so as to be vertically movable within the valve box 1.

On the outside of the valve body guide 3, a side wall 35 and the above-mentioned projection 32 are cut off to form a groove 33 which communicates up and down at one place.

A projection for supporting the horizontal shaft 501 is formed below the bottom portion 14 of the valve box 1, a plate 50 made of a material having a specific gravity of less than 1 and rotating around the horizontal shaft 501 is provided. Open and close the inlet 11 and the through portion 16.

A single through hole 241 is provided outside the large air hole valve seat 21 of the cover 2 and rotated through 90 degrees from the small air hole valve seat 22 to penetrate the cover 2. A female screw 24 is provided on the inner surface of the through hole 241, and the male screw portion 541 of the push rod 54 is screwed into the female screw 24. The push rod 54 passes through the groove 33 and the through portion 16 and passes through the push rod 5
The lower end of 4 is in contact with the upper surface of the plate 50. A cutout 542 for inserting a flathead screwdriver is provided at the upper end of the push rod 54.

As can be seen from the above, various types of check valves are conceivable.

The condition that the check valve should have is that, when a force is applied from above by a push rod 54, the check valve is separated from the lower surface of the inlet 11 and the through portion 16 to open the inlet 11 and the through portion 16. If this force is not applied, the inlet 11 and the lower surface of the through portion 16 come into close contact with each other,
Is provided below the entrance 11 so as to be closed.

In the above three embodiments, when the force from the push rod 54 is not applied, the horizontal plate 5 or 50
Uses the buoyancy by making the specific gravity of the horizontal plate 5 or the plate 50 smaller than 1 in order to obtain an upward force for making the lower surface of the inlet 11 and the lower surface of the penetrating portion 16 adhere to each other. The repulsive force of the spring may be used.

[0066]

According to the present invention, a valve guide which is mounted in a valve box to open and close a small air hole valve seat so as to open and close and a large air hole valve seat are provided so as to be able to move up and down freely. With regard to the air valve consisting of a floating valve body, a check valve for submerging the valve box and opening and closing the inlet of the valve box is provided. With a repair function that can be opened and closed by operating this check valve from above the outside of the lid The structure of the submerged air valve can be obtained, so that it is not necessary to provide an on-off valve for repair at the outside of the air valve, and the height from the pipe flange at the tip of the vertical pipe to the upper end of the air valve is eliminated. Can be reduced.

[0067]

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment.

FIG. 2 is a side sectional view showing the first embodiment.

FIG. 3 is a partial sectional view of FIG. 1;

4 is a plan view of the horizontal plate 5. FIG.

FIG. 5 is a front sectional view of the valve element guide 3 of FIG. 3;

FIG. 6 is a plan view of the valve body guide 3 of FIG. 3;

FIG. 7 is a front sectional view of the valve box 1 of the first embodiment.

FIG. 8 is a bottom view of the valve box 1 of the first embodiment.

FIG. 9 is a bottom view of the valve box 1 of the third embodiment.

FIG. 10 is a front sectional view of the second embodiment.

11 is a front sectional view of the valve element guide 3 of FIG.

FIG. 12 is a plan view of the valve element guide 3 of FIG.

FIG. 13 is a front sectional view showing the first embodiment.

FIG. 14 is a front sectional view showing the first embodiment.

FIG. 15 is a front sectional view showing the first embodiment.

FIG. 16 is a front sectional view showing the first embodiment.

FIG. 17 is a front sectional view showing the first embodiment.

FIG. 18 is a front sectional view showing the first embodiment.

FIG. 19 is a front sectional view showing a fourth embodiment.

FIG. 20 is a front sectional view showing a fourth embodiment.

FIG. 21 is a front sectional view showing a fourth embodiment.

FIG. 22 is a bottom view of the valve element guide 3 of FIG. 1;

FIG. 23 is a sectional view of a conventional air valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve box 11 Inlet 12 Pedestal 13 Mounting flange 14 Bottom 16 Penetration part 17 Lower part of valve box 2 Lid 21 Large air hole valve seat 22 Small air hole valve seat 24 Female screw 241 Through hole 3 Valve guide 30 Valve guide 32 Projection 33 Groove 35 Side wall 36 Window 4 Idle valve 5 Horizontal valve 51 Vertical axis 52 Lower end 54 Push rod 6 Vertical pipe 61 Pipe flange 63 Water pipe

Claims (2)

[Claims] 1. A valve box having an inlet at the bottom, a pedestal inside the bottom, and a mounting flange on the outside, and a large air hole valve seat at the center mounted on the top of the valve box,
A lid having a small air hole valve seat at an eccentric position, and a center positioning projection housed in this valve box so as to be vertically movable to open and close the small air hole valve seat and to bulge in the centrifugal direction at an upper outer edge. A pneumatic valve comprising a valve element guide having a portion and a floating valve element housed in the valve element guide so as to be movable up and down to open and close the large air hole valve seat. When a force is applied, the entrance and the penetration are separated from the lower surface of the entrance and the penetration, and if this force is not applied, the entrance and the lower surface of the penetration are brought into close contact with each other. A check valve configured to close the through portion is provided below this inlet, and a groove is formed by cutting out the outside of the side wall of the valve body guide and the above-mentioned protrusion to communicate vertically. A through hole is provided outside the air hole valve seat to penetrate this lid, and the inner surface of this through hole is Providing a screw, providing a push rod that is screwed into this female screw and passes through the groove and the through portion to the check valve, and provides a water seal structure for preventing water leakage from the through hole, When the mounting flange is located above the bottom and the mounting flange is mounted on the pipe flange at the tip of the vertical pipe of the water pipe, the valve box below the mounting flange is placed in the vertical pipe. When used, the push rod is rotated from above the lid to propel the push rod downward to separate the check valve from the inlet and the lower surface of the penetrating portion. And the through portion is opened, and at the time of repair, the push bar is rotated backward from above the lid to retreat the push bar upward, and the check valve is brought into close contact with the inlet and the lower surface of the through portion. These entrances and piers Repairing function of submerged type air valve, characterized in that to close the section. 2. The check valve according to claim 1, wherein the check valve is a horizontal plate made of a material having a specific gravity of less than 1. The horizontal plate is provided with a hole through which a plurality of vertical shafts projecting downward from the bottom penetrate. 2. A submerged air valve with a repair function according to claim 1, further comprising a stopper for preventing the horizontal plate from falling.