JPH1136424A - Device for forcibly operating vacuum valve of vacuum sewer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for forcibly operating the vacuum valve of a vacuum sewer system, capable of forcibly operating the vacuum valve with ease without the intervention of a controller and of forcibly operating the vacuum valve even if the vacuum valve has caught foreign matter between its valve shell and the valve seat of it valve element. SOLUTION: In a vacuum sewer system, a hand operated switching valve 20 or a hand operated two-way valve is provided which is inserted into an atmospheric pressure route 17 connecting the vacuum piston chamber G of a vacuum valve 13 with a controller 1 and into a vacuum pressure route 16 connecting the controller 1 with a vacuum sewer pipe 14 serving as a source of vacuum, and which is manually operated to cause the atmospheric pressure route 17 to be directly communicated with the vacuum pressure route 16 while bypassing the controller 1 to guide a vacuum into the vacuum piston chamber G of the vacuum valve 13. A vacuum gate valve 21 is provided upstream of the vacuum valve 13, and the source of vacuum guiding the vacuum into the vacuum piston chamber G of the vacuum valve 13 is positioned upstream of the vacuum gate valve 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum sewer system forcibly operating a vacuum valve used in a vacuum sewer system independently of a controller.

[0002]

2. Description of the Related Art FIG. 8 is a diagram showing a configuration example of a conventional vacuum sewer system of this kind. In the figure, reference numeral 15 denotes a vacuum valve unit, and sewage from each household flows into a sewage tank 15a of the vacuum valve unit 15. When the amount of the sewage Q in the sewage tank 15a increases and the sewage level rises, the pressure in the sensor pipe 11 increases and the controller 1
The pressure in the A room also increases. As a result, the shaft 2 moves rightward overcoming the elastic force of the spring 3. When the sewage level reaches a predetermined value, the opening F is closed by the valve at the tip of the shaft 2, and the openings C and D communicate with each other via the H chamber. Accordingly, the vacuum source such as the auxiliary vacuum chamber 6 and the vacuum sewer pipe 14 and the vacuum piston chamber G of the vacuum valve 13 are connected to the vacuum pressure path 16.
And through the atmospheric pressure path 17.

As a result, the valve body 13a is lifted by overcoming the elastic force of the spring 13f, the vacuum valve 13 is opened, the suction pipe 12 communicates with the vacuum sewer pipe 14, and the vacuum valve unit 1 is opened.
The sewage Q in the sewage tank 15a of No. 5 is sucked into the suction pipe 12,
Further, it is sucked into the vacuum sewer pipe 14. When the sewage starts to be sucked, a pressure difference is generated between the pressure detection hole 18 and the pressure detection hole 19, and this is generated through the pipe 40 and the pipe 41.
It is transmitted to each of the room and K room. This differential pressure becomes a force for pushing the diaphragm 23 to the right, and the valve element at the tip of the shaft 2 keeps the state in which the opening F is closed.

[0004] Even if the water level of the sewage falls and the pressure difference between the chambers A and B disappears, the shaft 2 is not moved due to the pressure difference between the chambers I and K.
The valve body at the tip of is kept pressed to the right. When the water level of the sewage drops further and the lower end of the suction pipe 12 sucks air, the pressure detection holes 18 and 19
, The diaphragm 23 is pushed to the left by the spring 3, the shaft 2 is pushed by the elastic force of the spring 3, and moves to the left, closing the opening E with the valve body at the tip thereof.
The openings C and D are shut off. Thereby, the communication between the vacuum source and the vacuum piston chamber G is cut off, and the valve 13a is
And is lowered by the resilience of the valve, and the vacuum valve 13 is closed. Thereby, the communication between the suction pipe 12 and the vacuum sewer pipe 14 is cut off, and the suction of the sewage Q is stopped. 4 is a magnet, 8 is a check valve, and 10 is a simultaneous air suction pipe.

[0005] In the vacuum sewer system having the above configuration,
When the maintenance of the vacuum valve unit 15 is performed, a person often enters the sewage tank 15a and performs the maintenance.
It was necessary to easily discharge the sewage Q accumulated in the sea. Therefore, it has been desired that the vacuum valve 13 can be easily and forcibly operated.

Conventionally, as a method of forcibly operating the vacuum valve 13, a method of operating the controller 1 by making the atmosphere open chamber B of the controller 1 a negative pressure using a manual vacuum pump, or a method of operating the vacuum piston of the vacuum valve 13 There was only a method of directly connecting a vacuum source to the chamber G and operating the vacuum valve 13.

[0007]

However, the method of setting the atmosphere open chamber B of the controller 1 to a negative pressure or the method of directly connecting a vacuum source to the vacuum piston chamber G of the vacuum valve 13 requires time-consuming work. There was a problem that.
Also, in the event that the controller is out of order, there is a problem that the vacuum valve 13 cannot be forcibly operated by the method of setting the atmosphere open chamber of the controller 1 to a negative pressure. There is a demand for a method capable of easily forcibly operating a vacuum valve.

FIG. 9 is a view showing an example of the structure of the vacuum valve 13. In the vacuum valve having such a structure, a vacuum is applied in a state in which foreign matter is interposed between the valve body 13b and the rubber valve seat 13c of the valve body 13a. When the valve 13 is closed, the valve body 13b and the rubber valve seat 1 are closed.
3c, air leakage may occur, which may affect the degree of vacuum of the entire pipeline of the vacuum sewer pipe 14. In addition, there is no vacuum on the upstream side of the vacuum valve 13 because the foreign matter is bitten,
Even if a vacuum is introduced into the vacuum piston chamber G of the vacuum valve 13, the vacuum valve 13 cannot be opened. Therefore, in order to remove the foreign matter, it was necessary to turn the screw portion 13d of the lower housing 13g and turn the screw portion of the adapter ring 13e to remove the lower housing 13g from the adapter ring 13e. But,
In many cases, foreign matter is strongly bitten between the rubber valve seat 13c and the valve body 13b, and the screw portion of the adapter ring 13e does not easily turn, making it difficult to remove the foreign matter.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is possible to easily forcibly operate a vacuum valve without using a controller, and a vacuum valve is provided between a valve body and a valve seat of a valve body. It is an object of the present invention to provide a vacuum valve forced operation device of a vacuum sewer system capable of forcibly operating a vacuum valve even when the vacuum valve is closed in a state where a foreign matter is caught in the device.

[0010]

In order to solve the above-mentioned problems, the present invention is directed to a vacuum valve disposed between a suction pipe disposed inside a vacuum valve unit and a vacuum sewer pipe; A controller for controlling the opening and closing of the valve, and when the level of the contaminated water in the vacuum valve unit becomes a predetermined level or more, the controller operates to guide the vacuum to the vacuum piston chamber of the vacuum valve using the vacuum drain as a vacuum source, In a vacuum sewage system configured to open a valve to communicate a vacuum sewer pipe with a suction pipe and to suck sewage in a vacuum valve unit from a suction pipe, a vacuum is bypassed from a vacuum source by a controller to a vacuum piston chamber of a vacuum valve. A vacuum valve forcibly operating means for guiding and forcibly opening the vacuum valve is provided.

According to a second aspect of the present invention, there is provided a vacuum sewer system for a vacuum sewer system according to the first aspect, wherein the vacuum valve forced operating means includes an atmospheric pressure path connecting the vacuum piston chamber of the vacuum valve and the controller; A manual switching valve or a manual two-way valve which is inserted into a vacuum pressure path connecting the controller and the vacuum source, and bypasses the controller by manual operation to directly connect the two paths and guides vacuum to the vacuum piston chamber of the vacuum valve. There is a feature.

According to a third aspect of the present invention, in the vacuum sewer system of the second aspect, the manual switching valve or the manual two-way valve is located at a position where the manual switching valve or the manual two-way valve is not submerged in the sewage flowing into the vacuum valve unit. It is characterized by being attached to.

According to a fourth aspect of the present invention, in the vacuum valve forced operating device according to any one of the first to third aspects, a vacuum gate valve is provided upstream of the vacuum valve, and a vacuum piston chamber of the vacuum valve is provided. A vacuum source for introducing a vacuum to the upstream of the vacuum gate valve.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to screens. FIG. 1 is a diagram showing a configuration of a vacuum sewer system provided with a vacuum valve forced operation device according to the present invention. Reference numeral 20 denotes a manual switching valve. The manual switching valve 20 includes a vacuum pressure path 16 connecting the vacuum drain pipe 14 and the auxiliary vacuum tank 6 to the controller 1, and an atmospheric pressure path connecting the vacuum piston chamber G of the vacuum valve 13 and the controller 1. 17 is interposed and arranged. Further, a vacuum gate valve 21 is disposed between the vacuum valve 13 and the vacuum sewer pipe 14, and the check valve 8 is connected to the vacuum gate valve 2.
1 is provided on the upstream side. The controller 1,
The configurations of the vacuum valve unit 15 and the vacuum valve 13 are the same as those shown in FIGS.

[0015] In the vacuum sewage system having the above configuration,
When the wastewater in the vacuum valve unit 15 is discharged, when the push button 20a of the manual switching valve 20 is pushed in the direction of arrow J, the shaft 20b also moves in conjunction with the controller 1 as shown in FIG. The air pressure path 17 is shut off, and the vacuum pressure path 16 and the atmospheric pressure path 17 communicate directly. That is, the controller 1 is bypassed, and the vacuum pressure path 16 and the atmospheric pressure path 17 communicate directly. As a result, the vacuum piston chamber G of the vacuum valve 13 passes through the atmospheric pressure path 17, the manual switching valve 20, the vacuum pressure path 16, the auxiliary vacuum tank 6, the vacuum pressure path 16 and the check valve 8, and Communicate with source.

Thus, a vacuum is introduced from the vacuum source into the vacuum piston chamber G of the vacuum valve 13, the valve body 13a is pulled up, and the vacuum valve 13 is opened. As a result, the vacuum drain pipe 14 communicates with the suction pipe 12 as described above, and the vacuum valve unit 15
The sewage Q inside is sucked and discharged by the suction pipe 12 (see FIG. 9).

When the vacuum valve 13 is closed in a state where foreign matter is sandwiched between the valve body 13b and the rubber valve seat 13c of the valve body 13a, air leaks from between the valve body 13b and the rubber valve seat 13c. There is a possibility that the degree of vacuum of the entire pipeline of the vacuum drain pipe 14 may be affected. In addition, there is no vacuum upstream of the vacuum valve 13 because the foreign matter is bitten, and even if vacuum is introduced into the vacuum piston chamber G, the vacuum valve 13 cannot be opened. Therefore, in the present vacuum sewer system, as shown in FIG. 3, by closing the vacuum gate valve 21, the vacuum gate valve 2 is closed.
The communication between the suction pipe 12 and the vacuum sewer pipe 14 is interrupted by the first valve body 21a.

This prevents air leakage from affecting the degree of vacuum of the entire vacuum sewer pipe 14 due to air leakage even when foreign matter is interposed between the valve body 13b and the rubber valve seat 13c of the valve body 13a. be able to. In addition, vacuum gate valve 2
The vacuum is guided to the vacuum piston chamber G of the vacuum valve 13 through the check valve 8 provided on the upstream side of the valve 1, so that the valve body 13 a is pulled up and the vacuum valve 13 is opened. Thus, the screw portion 13d of the lower housing 13g is turned, and the screw portion of the adapter ring 13e is turned, so that the lower housing 13g can be easily removed from the adapter ring 13e (see FIG. 9), thereby facilitating the work of removing foreign matter. .

FIG. 4 is a diagram showing another configuration of a vacuum sewage system provided with a vacuum valve forced operation device according to the present invention.
The present vacuum sewage system differs from FIG. 1 in that a manual two-way cock (manual two-way valve) 22 is provided instead of the manual switching valve 20 in FIG. This manual two-way cock 2
2 is extremely small and lightweight, so the vacuum pressure path 1
6. A hose can be used for the atmospheric pressure path 17 and can be hung from the hose. Therefore, by extending this hose, the manual two-way cock 22 can be attached to any position of the vacuum valve unit 15, especially to a position not submerged in sewage. Therefore, there is no possibility that the manual two-way cock 22 will be submerged in the sewage and hinder the operation.

By rotating the valve body 22a of the manual two-way cock 22, as shown in FIG.
The atmospheric pressure path 17 connecting the pressure path and the vacuum valve 13 is shut off, and the atmospheric pressure path 17 and the vacuum pressure path 16 are directly connected. As a result, the vacuum in the vacuum sewer pipe 14 is reduced by the check valve 8 and the vacuum pressure path 1.
6, through the auxiliary vacuum chamber 6, the vacuum pressure path 16, the manual two-way cock 22, and the atmospheric pressure path 17, it is led to the vacuum piston chamber G of the vacuum valve 13. As a result, the valve 13a is raised, and the vacuum valve 13 is opened. Valve body 13b and valve body 13a
Vacuum valve 1 with foreign matter interposed between rubber valve seats 13c
When the valve 3 is closed, the vacuum valve 13 can be opened by closing the vacuum gate valve 21 as described above.

Since the manual switching valve 20 operates even when immersed in sewage, it can be provided at the top (see FIG. 9) of the upper housing 13h of the vacuum valve 13 as shown in FIG.
Also, even if the vacuum valve 13 is completely submerged, it may be provided above the vacuum valve unit 15 as shown in FIG. 7 so that the position of the manual switching valve 20 can be easily recognized.

The manual switching valve 20 and the manual two-way cock 22 are both made of a material that does not corrode with sewage, such as plastic.

[0023]

As described above, according to the first aspect of the present invention, the vacuum is introduced from the vacuum source to the vacuum piston chamber of the vacuum valve by bypassing the controller, and the vacuum valve is forcibly opened. Since the valve forcible operation means is provided, the vacuum valve can be easily and forcibly operated without the intervention of the controller.

According to the second aspect of the present invention, the vacuum valve forcibly operating means is interposed in the atmospheric pressure path connecting the vacuum piston chamber of the vacuum valve and the controller and the vacuum pressure path connecting the controller and the vacuum source. By manual operation, the controller is bypassed and the two paths are directly connected to each other, and a manual switching valve or a manual two-way valve for guiding vacuum to the vacuum piston chamber of the vacuum valve, so that the operation for discharging wastewater becomes extremely easy. .

According to the third aspect of the present invention, the manual switching valve or the manual two-way valve is mounted at a position where it is not submerged in the sewage flowing into the vacuum valve unit. The valve is not submerged in sewage,
Operation becomes easy.

According to the fourth aspect of the present invention, the vacuum gate valve is provided upstream of the vacuum valve, and the vacuum source for guiding vacuum to the vacuum piston chamber of the vacuum valve is located upstream of the vacuum gate valve. Even if the vacuum valve is closed with foreign matter between the valve body and the valve seat of the valve body, closing the vacuum gate valve prevents the influence on the degree of vacuum of the entire vacuum drain pipe. In addition, since the vacuum valve can be forcibly operated, the work of removing foreign matter is facilitated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a vacuum sewer system provided with a vacuum valve forced operation device according to the present invention.

FIG. 2 is a diagram showing an operation state of the vacuum sewer system shown in FIG.

FIG. 3 is a diagram showing an operation state of the vacuum sewer system shown in FIG. 1;

FIG. 4 is a diagram showing a configuration of a vacuum sewer system provided with a vacuum valve forced operation device according to the present invention.

FIG. 5 is a diagram showing an operation state of the vacuum sewer system shown in FIG. 4;

FIG. 6 is a diagram showing a configuration of a vacuum sewer system provided with a vacuum valve forced operation device according to the present invention.

FIG. 7 is a diagram showing a configuration of a vacuum sewer system provided with a vacuum valve forced operation device according to the present invention.

FIG. 8 is a diagram showing a configuration of a conventional vacuum sewer system.

FIG. 9 is a diagram showing a structural example of a vacuum valve.

[Explanation of symbols]

 Reference Signs List 1 controller 6 auxiliary vacuum tank 12 suction pipe 13 vacuum valve 14 vacuum sewer pipe 15 vacuum valve unit 16 vacuum pressure path 17 atmospheric pressure path 20 manual switching valve 21 vacuum gate valve 22 manual two-way cock

Claims (4)

[Claims] 1. A sewage level in a vacuum valve unit, comprising: a vacuum valve disposed between a suction pipe and a vacuum sewer pipe disposed in a vacuum valve unit; and a controller for controlling opening and closing of the vacuum valve. When the level becomes a predetermined level or more, the controller operates to guide vacuum to the vacuum piston chamber of the vacuum valve using the vacuum sewer pipe as a vacuum source, open the vacuum valve to communicate the vacuum sewer pipe with the suction pipe, In a vacuum sewer system configured to suck sewage from a suction pipe, a vacuum valve forcibly operating a vacuum piston chamber of the vacuum valve to guide vacuum from the vacuum source by bypassing the controller and forcibly opening the vacuum valve. A vacuum valve forced operation device for a vacuum sewerage system, comprising means. 2. The vacuum valve forcibly operating means is inserted in an atmospheric pressure path connecting a vacuum piston chamber of the vacuum valve to a controller and a vacuum pressure path connecting a controller and a vacuum source, and bypasses the controller by manual operation. 2. A device for forcedly operating a vacuum sewer system according to claim 1, wherein the device is a manual switching valve or a manual two-way valve that directly connects the two paths to introduce vacuum into the vacuum piston chamber of the vacuum valve. . 3. The vacuum valve forced operation of a vacuum sewer system according to claim 2, wherein the manual switching valve or the manual two-way valve is mounted at a position where the manual switching valve or the manual two-way valve does not submerge in the sewage flowing into the vacuum valve unit. apparatus. 4. A vacuum gate valve is provided upstream of the vacuum valve, and a vacuum source for guiding a vacuum to a vacuum piston chamber of the vacuum valve is upstream of the vacuum gate valve. The vacuum valve forced operating device according to any one of the above.