JP3619026B2 - Vacuum valve forced operation equipment and vacuum sewage collection system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum valve forcible operation device and a vacuum type sewage collection system that can easily and forcibly operate a vacuum valve used in a vacuum sewage collection system .
[0002]
[Prior art]
Conventionally, sewage discharged from homes or factories is once stored in a sewage basin in a vacuum valve unit buried underground, and when a predetermined amount of the sewage accumulates, a vacuum valve installed in the vacuum valve unit is opened and the sewage is collected. A vacuum-type sewage collection system that discharges to a vacuum sewage pipe and sends it to a vacuum pump station is used.
[0003]
FIG. 4 is a diagram showing a configuration example of a conventional vacuum valve control device. In the figure, reference numeral 1 denotes sewage water. One end of a suction pipe 3 is inserted into the sewage water 1, and the other end of the suction pipe 3 is connected to a vacuum system via a valve body 6 of a vacuum valve 4. It is connected to the water pipe 5. Reference numeral 4 denotes a vacuum valve. The vacuum valve 4 houses a diaphragm 4b and a spring 4a for urging the diaphragm 4b in a piston chamber 4c, and includes a valve body 6.
[0004]
When the sewage water level in the sewage masu 1 rises and accumulates a certain amount, the pressure in the pressure sensor pipe 2 rises to a predetermined positive pressure, and this pressure passes through the pipe 33 and passes through the first chamber of the controller 11. 17 (at this time, the air release chamber 18 configured by being partitioned by the partition wall 15 and the sensor diaphragm 16 is always maintained at the atmospheric pressure by the air release port 18 a), and the sensor diaphragm 16 has the elasticity of the spring 28. And it moves to the right by overcoming the magnetic attractive force of the magnet 29, pushes the shaft 14, and the valve body 13 closes the opening 30 communicating with the atmosphere. That is, the controller 11 is in an operating state. As a result, the vacuum in the vacuum sewage pipe 5 is transmitted to the fifth chamber 24 and the sixth chamber 25 through the check valve 38 and the pipe 35, and further transmitted to the piston chamber 4 c of the vacuum valve 4 through the pipe 36. The body 6 is pulled up and the vacuum valve 4 is opened. As a result, the sewage in the sewage masu 1 is sucked by the suction pipe 3 and transferred to the vacuum sewage pipe 5.
[0005]
While the sewage flows through the suction pipe 3, the controller 11 remains in an operating state because a differential pressure is generated between the differential pressure detection ports 9 and 10 having different heights of the suction pipe 3. Keep open.
[0006]
When the water level of the sewage falls and the lower end of the suction pipe 3 sucks air, the differential pressure between the two differential pressure detection ports 9 and 10 disappears, so that the diaphragm 19 is pushed to the left by the spring 28 and moves. 13 moves to the left and returns to the position shown in the figure to close the opening 26. That is, the controller 11 switches to the standby state.
[0007]
As a result, the atmosphere flows into the sixth chamber 25, and the atmosphere flows into the piston chamber 4 c of the vacuum valve 4 through the pipe 36, and the valve body 6 is pushed by the spring 4 a to automatically close the vacuum sewage pipe 5. Inflow of air into the sewer pipe 5 is prevented.
[0008]
By the way, the maintenance of the vacuum valve unit is often performed directly by a person entering the sewage 1 so that the vacuum valve 4 can be easily forced so that the sewage accumulated in the sewage 1 can be easily discharged during maintenance. Had to work.
[0009]
Therefore, conventionally, the controller 11 is forcibly operated by the following two methods.
[0010]
(1) A method in which a hose is connected to the atmosphere opening port 18a, and the sensor diaphragm 16 is moved to the right when a person sucks air in the atmosphere opening chamber 18, thereby forcibly operating the vacuum valve 4.
[0011]
(2) A method in which a hand pump is connected to the atmosphere opening port 18a, the inside of the atmosphere opening chamber 18 is made negative pressure by the hand pump, the sensor diaphragm 16 is moved rightward, and the vacuum valve 4 is forcibly operated.
[0012]
[Problems to be solved by the invention]
However, the method (1) is a dangerous work because a person sucks in gas generated from sewage in the vacuum valve unit.
[0013]
As for the above method (2), when the controller 11 is activated and the vacuum valve 4 is opened to start sucking sewage, it is necessary to operate the hand pump to immediately return the atmosphere release chamber 18 to atmospheric pressure. If the pump is misoperated or time-consuming, the vacuum valve 4 will remain open, causing a large amount of air to be sucked into the vacuum sewage pipe 5, and the degree of vacuum in the pipe may be reduced. It was.
[0014]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its purpose is to allow a vacuum valve to be forcibly and safely operated despite the simple structure, and to collect sewage in the sewage basin. It is an object to provide a vacuum valve forced operation device and a vacuum sewage collection system that can easily discharge water .
[0015]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a desired opening / closing pressure applied to a vacuum valve disposed between a suction pipe having a tip disposed in a sewage basin and a vacuum system for sucking and transferring the sewage. A vacuum valve opening / closing mechanism that opens and closes the valve, a shaft that reciprocates to open and close the vacuum valve by operating the vacuum valve opening / closing mechanism, a sensor diaphragm attached to the shaft, and a vacuum for the shaft A spring that biases the valve in the closing direction, a chamber provided on one side of the sensor diaphragm, an air release chamber provided on the other side of the sensor diaphragm, and a change in the level of the sewage sewage under pressure a pressure sensor pipe is moved in the direction of opening the vacuum valve shaft by directing the converted pressure which is converted to the chamber provided on one surface side of the sensor diaphragm, Tokoro above and below the suction pipe Both differential pressure detection ports that are generated when sewage is sucked into the suction pipe by connecting the differential pressure detection ports provided at intervals to the third chamber and the fourth chamber, respectively, which are separated by a diaphragm attached to the shaft. A vacuum valve forced operation device attached to a vacuum valve control device having a structure for holding the diaphragm in a direction to open the vacuum valve by a differential pressure between the vacuum valve forced operation device, and the vacuum valve forced operation device is an elastic body having a hollow inside The forcible operation member provided with an air vent hole through which air gradually escapes at a predetermined position is connected to the atmosphere release chamber of the vacuum valve control device to temporarily reduce the pressure of the atmosphere release chamber to a vacuum and vacuum the shaft. is configured to gradually atmosphere-vented compartment after moving in the direction of opening the valve structure is returned to atmospheric pressure, air is drawn a vacuum valve once opened by the vacuum valve forced activation device to the suction pipe Until the vacuum valve forced operating device, characterized in that to keep the open state by the differential pressure between the two differential pressure outlet.
According to a second aspect of the present invention, there is provided a vacuum sewage collecting system including a vacuum valve control device to which the vacuum valve forced operation device according to the first aspect is attached.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a configuration example of a vacuum valve control device using one embodiment of the present invention, and FIG. 2 is a specific example of attachment of a vacuum valve forced operation device 40 according to one embodiment of the present invention to a controller 11. FIG. 3 is a side sectional view of the forced operation ball 41. FIG.
[0017]
In these figures, the same parts as those in FIG. The vacuum valve control device of FIG. 1 and the vacuum valve control device of FIG. 4 have substantially the same configuration. The difference is that the present embodiment is detachably attached to the atmosphere opening port 18a of the atmosphere opening chamber 18. The vacuum valve forced operation device 40 is attached. Each component will be described in detail below.
[0018]
In FIG. 1, the controller 11 is provided with a partition wall 15 penetrating the shaft 14 in the casing 12 and is divided into left and right chambers, and the left chamber is divided into a first chamber 17, an atmosphere release chamber (second chamber) 18 by a sensor diaphragm 16. The right chamber is divided into a third chamber 20 and a fourth chamber 21 by a diaphragm 19. The right end portion of the casing 12 is divided into a fifth chamber 24 and a sixth chamber 25 by partition walls 22 and 23.
[0019]
The valve body 13 fixed to the front end of the shaft 14 is disposed in the sixth chamber 25, and the rear end of the shaft 14 is fixed (or abutted) to the center portion of the sensor diaphragm 16. The shaft 14 passes through the partition wall 15, and a diaphragm 19 is inserted (diaphragm 9 is fixed to the shaft 14), and passes through the partition walls 22 and 23. A seal mechanism (not shown) is provided in a penetrating portion where the shaft 14 penetrates the partition wall 15, and a seal mechanism (not shown) is provided in a portion penetrating the partition wall 22, and the valve body 13 is provided in the penetrating portion of the partition wall 23 of the shaft 14. The opening 26 opened and closed is provided. A spring 28 pushes the diaphragm 19 to the left.
[0020]
A magnet 29 is attached to the inner wall of the casing 12 facing the magnetic body 14 a attached to the center of the sensor diaphragm 16. The sixth chamber 25 is provided with a hole 30 that is opened and closed by the valve body 13 and communicates with the atmosphere.
[0021]
The suction pipe 3 is provided with differential pressure detection ports 9 and 10 at predetermined intervals in the vertical direction. The differential pressure detection port 9 communicates with the fourth chamber 21 through a pipe 31, and the differential pressure detection port 10 is connected through a pipe 32. The pressure sensor tube 2 communicates with the first chamber 17 through a pipe 33. The fifth chamber 24 passes through the pipe 35 and communicates with the vacuum sewage pipe 5 through the check valve 38 and communicates with the auxiliary vacuum tank 37 branched from the pipe 35. The sixth chamber 25 communicates with the piston of the vacuum valve 4 through the pipe 36. It communicates with the chamber 4c.
[0022]
Here, the vacuum valve forced operation device 40 according to the present invention is detachably attached to the atmosphere opening port 18 a of the atmosphere opening chamber 18. As shown in FIG. 2, the vacuum valve forced operation device 40 is composed of a forced operation ball (forced operation member) 41 and a hose 43. One end of the hose 43 is connected to the atmosphere opening 18a, and the other end is connected to a joint. It is configured to be connected to the forced operation ball 41 through 45.
[0023]
As shown in FIG. 3, the forcible operation ball 41 is formed by molding a rubber material into a substantially spherical shape, and is provided with an air vent hole 47 having a small diameter so that air is gradually removed from the upper part thereof, and a cylindrical part is provided at the lower part thereof. A hose connection port 49 is provided. The hose 43 is constituted by a silicon hose, for example.
[0024]
In the vacuum valve control device having the configuration shown in FIG. 1, when the level of the sewage water 1 rises and the pressure of the pressure sensor pipe 2 rises, the positive pressure passes through the pipe 33 and passes through the first chamber in the controller 11. 17 As a result, the sensor diaphragm 16 overcomes the elastic force of the spring 28 and the magnetic attractive force of the magnet 29 and moves to the right, and pushes the shaft 14, so the valve body 13 closes the hole 30 communicating with the atmosphere. Then, the vacuum from the vacuum sewage pipe 5 and the vacuum stored in the auxiliary vacuum tank 37 while the vacuum valve 4 is not operating are transmitted to the fifth chamber 24 and the sixth chamber 25 through the pipe 35, and further the vacuum This is transmitted to the piston chamber 4 c of the valve 4. As a result, the valve body 6 is pulled up and the vacuum valve 4 is opened.
[0025]
At this time, when the diaphragm 16 is pushed by the pressure of the pressure sensor tube 2 and the shaft 14 starts to move, the elastic force of the spring 28 increases as the shaft 14 moves, but the magnetic attractive force of the magnet 29 decreases rapidly (moves). Therefore, the shaft 14 moves to a moving end, that is, to a position where the valve body 13 closes the hole 30. Here, the fifth chamber 24, the sixth chamber 25, and the valve body 13 constitute a vacuum valve opening / closing mechanism that opens and closes the vacuum valve 4.
[0026]
When the valve body 6 is pulled up, the vacuum sewage pipe 5 and the suction pipe 3 communicate with each other, so that sewage begins to be sucked and a differential pressure is generated between the differential pressure detection ports 9 and 10. It is transmitted to each of the four chambers 21 and the third chamber 20. This differential pressure becomes a force that pushes the diaphragm 19 to the right, and the valve body 13 is pushed to the right via the shaft 14. That is, even if the water level of the sewage falls and the pressure difference between the first chamber 17 and the air release chamber 18 disappears, the differential pressure between the fourth chamber 21 and the third chamber 20 remains while the sewage flows through the suction pipe 3. Therefore, the valve body 13 remains pressed to the right side.
[0027]
When the water level of the sewage further falls and the lower end of the suction pipe 3 sucks air, the pressure difference between the differential pressure detection ports 9 and 10 disappears, so that the diaphragm 19 is pushed to the left by the spring 28 and the valve body 13 Is pushed to the left side and closes the opening 26 of the partition wall 23. As a result, the atmosphere flows into the sixth chamber 25, the atmosphere flows into the piston chamber 4 c of the vacuum valve 4 through the pipe 36, and the valve body 6 is pushed by the spring 4 a to close the vacuum sewage pipe 5.
[0028]
On the other hand, when the vacuum valve 4 is closed and the sewage 1 is forced to open and the sewage in the sewage 1 is forced to be discharged, the controller 11 is opened to the atmosphere as shown in FIGS. One end of the hose 43 of the vacuum valve forced operation device 40 is connected to the port 18a, and then the forced operation ball 41 is crushed. As a result, the positive pressure in the forced operation ball 41 and the air release chamber 18 of the controller 11 is momentarily positive, but the air is released from the air vent hole 47 and returns to the atmospheric pressure.
[0029]
When the forced operation ball 41 grasped here is released, the forced operation ball 41 is instantaneously returned to its original shape by the repulsive force of rubber, and the atmosphere release chamber 18 becomes negative pressure for several seconds. For this reason, the sensor diaphragm 16 moves to the right side, the valve body 13 closes the opening 30, the controller 11 is activated, the vacuum valve 4 is opened and the sewage 1 starts to suck the sewage.
[0030]
Next, since air gradually begins to flow in from the air vent hole 47 (see FIG. 3) of the forced operation ball 41, the atmosphere release chamber 18 naturally returns to atmospheric pressure. While the sewage flows through the suction pipe 3, the vacuum valve 4 is kept open by the differential pressure of the differential pressure detection ports 9 and 10 as described above. When the suction pipe 3 starts sucking air after the sewage is sucked, the pressure difference disappears and the vacuum valve 4 is automatically closed.
[0031]
When the vacuum valve forced operation device 40 is used as described above, the vacuum valve 4 can be forcedly operated, and the vacuum valve is automatically closed without any special operation.
[0032]
【The invention's effect】
As described in detail above, when the vacuum valve forced operation device according to the present invention is used, the vacuum valve can be forcibly and safely operated in spite of its simple structure, and has a special operation. The vacuum valve can be automatically closed without performing the operation. Accordingly, the sewage collected in the sewage can be discharged easily and easily without sucking a large amount of air into the vacuum sewage pipe.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration example of a vacuum valve control device using an embodiment of the present invention.
FIG. 2 is a side view showing a specific example of attachment of the vacuum valve forced operation device 40 according to the present invention.
FIG. 3 is a side sectional view of a forced operation ball 41. FIG.
FIG. 4 is a diagram illustrating a configuration example of a conventional vacuum valve control device.
[Explanation of symbols]
1 Dirty water 2 Pressure sensor tube 3 Suction tube 4 Vacuum valve 5 Vacuum sewage tube (vacuum system)
11 Controller 13 Valve body (Vacuum valve opening / closing mechanism)
24 5th chamber (Vacuum valve opening / closing mechanism)
25 Room 6 (Vacuum valve opening / closing mechanism)
14 Shaft 16 Sensor diaphragm 17 1st chamber 18 Atmospheric release chamber 28 Spring 40 Forced operation device 41 of vacuum valve Forced operation ball (forced operation member)
47 Air vent hole

Claims (2)

A vacuum valve opening / closing mechanism that supplies a desired opening / closing pressure to a vacuum valve disposed between a suction pipe disposed in the tip of the sewage sewage and a vacuum system that sucks and transfers the sewage and opens and closes the vacuum valve; A shaft that reciprocates to open and close the vacuum valve by operating the valve opening and closing mechanism, a sensor diaphragm attached to the shaft, a spring that urges the shaft in a direction to close the vacuum valve, and one of the sensor diaphragms A chamber provided on the surface side, an air release chamber provided on the other surface side of the sensor diaphragm, and a pressure converted from the change in the water level of the sewage sewage into pressure, and the converted pressure on one side of the sensor diaphragm. wherein a pressure sensor pipe is moved in the direction of opening the vacuum valve shaft by directing a chamber provided, the differential pressure outlet provided at predetermined intervals above and below the suction pipe shaft The diaphragm is held in the direction in which the vacuum valve is opened by the differential pressure between the two differential pressure detection ports that are communicated with the third chamber and the fourth chamber, respectively, which are separated by the attached diaphragm, and sucked into the suction pipe. A vacuum valve forced operating device attached to a vacuum valve control device comprising a structure ,
The vacuum valve forcible operating device is configured by connecting a forcible operating member, which is an elastic body having a hollow inside and provided with an air vent hole through which air is gradually removed, to the atmosphere opening chamber of the vacuum valve control device. The vacuum chamber is configured to return to atmospheric pressure gradually after moving the shaft in the direction to open the vacuum valve once the pressure in the open chamber is negative, and the vacuum once opened by this vacuum valve forced operation device A vacuum valve forced operation device characterized in that the valve is kept open by the differential pressure between the two differential pressure detection ports until air is sucked into the suction pipe . A vacuum type sewage collection system comprising a vacuum valve control device to which the vacuum valve forced operation device according to claim 1 is attached.

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