Vacuum flush valve for storage tank

Abstract

The utility model relates to a storage tank vacuum flush valve which comprises a connecting base, a vacuum pipe is arranged on the connecting base, the bottom end of the vacuum pipe extends into a water storage tank, a vacuum valve body is arranged on the vacuum pipe, a diaphragm valve connecting seat is arranged in the vacuum valve body, and the interior of the vacuum valve body is divided into an air inlet cavity and a vacuum cavity through the diaphragm valve connecting seat. An air suction pipe is arranged on the outer side wall of the vacuum valve body, one end of the air suction pipe is communicated with the interior of the vacuum cavity, a vacuum pump is arranged at the other end of the air suction pipe, a vacuum diaphragm valve is arranged on the diaphragm valve connecting seat, and accumulation and release of water resources in the storage tank in the vacuum pipe are achieved through the vacuum pump. In the quick release process, sludge at the bottom of the reservoir is flushed. The device has the effect of reducing water resource loss.

Description

Technical Field

[0001] The present application relates to the field of vacuum flushing technology, and in particular to a vacuum flushing valve for a regulating reservoir. Background Art

[0002] A storage tank is a water conservancy facility used to store and regulate water flow. It is often used in rainwater collection and utilization systems to help balance and regulate water flow. The storage tank can collect excess rainwater when there is a lot of rain for use in drought periods, or play a buffering and storage role in the sewage treatment process.

[0003] The rainwater stored in the regulating reservoir has the characteristics of high concentration of suspended particulate matter and high concentration of organic pollutants. After the collected rainwater is retained in the reservoir for several hours, the pollutants and impurities in the water will settle down and accumulate into sludge of a certain thickness at the bottom of the emptied regulating reservoir. These sludges will not only occupy the volume of the regulating reservoir, but also cause the water quality of the subsequent rainwater stored in the regulating reservoir to deteriorate, affecting the utilization and discharge of rainwater and causing pollution to the receiving water body. Therefore, it is necessary to regularly and effectively clean the sediments at the bottom of the regulating reservoir.

[0004] At present, the commonly used method for cleaning sludge in regulating reservoirs is mainly to use high-pressure water guns or hydraulic dredging equipment to disperse the sludge and discharge it from the regulating reservoir through the impact force of the water flow. However, this method requires a large amount of clean water resources during the cleaning process and has obvious shortcomings. Utility Model Content

[0005] In order to reduce the loss of water resources, the present application provides a vacuum flushing valve for a regulating reservoir.

[0006] The present application provides a vacuum flushing valve for a regulating reservoir using the following technical solution:

[0007] A vacuum flushing valve for a regulating reservoir comprises a connecting base, wherein the connecting base is arranged at the top of a water reservoir, a vacuum tube is arranged on the connecting base, the bottom end of the vacuum tube extends to the inside of the water reservoir, a vacuum valve body is arranged on the vacuum tube, a diaphragm valve seat is arranged in the vacuum valve body, the diaphragm valve seat divides the inside of the vacuum valve body into an air inlet chamber and a vacuum chamber, the air inlet chamber is connected to the outside atmosphere, the vacuum chamber is connected to the vacuum tube, an exhaust pipe is arranged on the outer side wall of the vacuum valve body, one end of the exhaust pipe is connected to the inside of the vacuum chamber, and the other end is provided with a vacuum pump, and a vacuum diaphragm valve is arranged on the diaphragm valve seat.

[0008] By adopting the above technical scheme, when it is necessary to clean the regulating reservoir, the vacuum diaphragm valve is closed and the vacuum pump is started. The vacuum pump extracts the air inside the vacuum cavity and the vacuum tube through the exhaust pipe, the pressure inside the vacuum cavity and the vacuum tube is reduced, and the water inside the regulating reservoir flows into the vacuum cavity under the action of water pressure. When the water level in the vacuum cavity reaches the highest water level, the vacuum pump is closed and the vacuum diaphragm valve is started. A large amount of air flows into the vacuum cavity through the air inlet chamber, the vacuum degree in the vacuum cavity decreases, and the water inside the vacuum cavity and the vacuum tube quickly rushes into the bottom of the regulating reservoir to flush the silt at the bottom of the regulating reservoir. The silt is flushed by the rapid release of the potential energy of the water resources inside the regulating reservoir. Such an arrangement makes it unnecessary to use external water resources during the dredging process, thereby reducing the loss of water resources.

[0009] Optionally, a silencer cap is detachably connected to the top end of the vacuum valve body via a connecting flange, and a plurality of air holes are provided on the outer peripheral side wall of the silencer cap.

[0010] By adopting the above technical solution, the air holes opened on the silencer cap can increase the pressure of the gas entering the air inlet chamber and shorten the time for the vacuum chamber to restore the normal air pressure level. At the same time, the opening of the air holes can absorb and disperse the noise generated by the airflow, effectively reducing the noise level of the vacuum flushing valve. The silencer cap is easy to install and disassemble through the setting of the connecting flange. Workers can inspect the vacuum diaphragm valve by removing the silencer cap, which improves the convenience of workers' inspection.

[0011] Optionally, a liquid level gauge bracket is provided on one end of the diaphragm valve seat close to the vacuum chamber, a radar liquid level gauge is provided on the liquid level gauge bracket, and the radar liquid level gauge is electrically connected to the vacuum diaphragm valve through a control system.

[0012] By adopting the above technical solution, the radar level meter can effectively monitor the height of the water level in the vacuum chamber to avoid affecting the dredging process due to too high or too low water level. At the same time, when the water level in the vacuum chamber reaches a preset height, the radar level meter controls the vacuum diaphragm valve to open automatically, thereby improving the degree of automation of the dredging process.

[0013] Optionally, a pressure transmitter is provided at one end of the diaphragm valve seat close to the air inlet cavity.

[0014] By adopting the above technical solution, the pressure transmitter can detect the pressure on both sides of the diaphragm valve seat in real time to ensure that the preset vacuum level is reached in the vacuum chamber, thereby reducing the error caused by the radar level meter and making the start-up timing of the vacuum diaphragm valve more accurate.

[0015] Optionally, the vacuum valve body is detachably connected to the vacuum tube via a connecting flange, and a sealing gasket is provided at the connection between the vacuum valve body and the vacuum tube.

[0016] By adopting the above technical solution, the setting of the connecting flange makes it convenient for workers to disassemble the vacuum valve body for maintenance, and the setting of the sealing gasket improves the sealing performance of the vacuum chamber, ensuring the smooth progress of the vacuum pumping process.

[0017] Optionally, a filter box is provided at one end of the air extraction pipe close to the vacuum valve body, the filter box is communicated with the interior of the air extraction pipe, and a filter plate is provided in the filter box.

[0018] By adopting the above technical scheme, some particulate impurities will inevitably adhere to the inner wall of the vacuum chamber when it comes into contact with the water in the regulating reservoir. When the vacuum pump extracts gas, the gas containing particulate impurities moves to the filter box through the exhaust pipe. The particulate impurities in the gas are intercepted by the filter plate when they come into contact with the filter plate, thereby reducing the content of particulate impurities entering the vacuum pump through the exhaust pipe, effectively reducing the impact of particulate impurities on the vacuum pump, and ensuring the smooth progress of the dredging process.

[0019] Optionally, the filter box is detachably connected to the exhaust pipe via a connecting flange, and sliders are provided on two opposite end faces of the filter plate. A slide groove that slides with the slide groove is provided on opposite side walls of the filter box. A spring is provided in the slide groove, and one end of the spring is connected to the inner wall of the slide groove toward one end of the vacuum pump, and the other end is connected to the slide groove. When the spring is in a natural state, the slide groove abuts against the inner wall of the slide groove close to one end of the vacuum valve body.

[0020] By adopting the above technical solution, when the vacuum pump extracts the gas in the vacuum chamber, the airflow continuously impacts the filter plate to move the filter plate toward the direction close to the vacuum pump, and the spring is compressed by the filter plate. When the vacuum pump is turned off, the elastic potential energy accumulated in the spring is instantly released, and the spring pushes the filter plate to hit the inner wall of the slide groove. At this time, the filter plate vibrates, and particulate impurities adhered to or accumulated on the filter holes of the filter plate fall to the bottom of the filter box. When there are too many particulate impurities accumulated inside the filter box, workers can disassemble the filter box through the connecting flange to clean the inside of the filter box. This arrangement ensures the filtering effect of the filter plate while achieving centralized cleaning of particulate impurities, further improving the convenience of workers' operation.

[0021] Optionally, a filter screen is provided in the air inlet cavity, a mounting tube is provided on the outer peripheral side wall of the filter screen, and the mounting tube is threadedly connected to one end of the silencer cap close to the air inlet cavity.

[0022] By adopting the above technical scheme, the setting of the filter screen plate realizes the filtration of the intake air in the air intake chamber, reducing the possibility of dust and impurities in the air entering the vacuum chamber through the air intake chamber, thereby improving the cleanliness of the inside of the vacuum chamber, ensuring the water in the vacuum chamber and the vacuum tube to flush the sludge, and at the same time reducing the filtration pressure of the filter plate. The threaded connection method makes it convenient for workers to remove the filter screen plate for cleaning, thereby ensuring the filtration effect of the filter screen plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application sets a vacuum tube, a vacuum valve body, an air extraction pipe and a vacuum pump. The vacuum pump extracts air from the vacuum valve body through the air extraction pipe, thereby reducing the pressure inside the vacuum tube. The water in the water reservoir is accumulated in the vacuum tube under the pressure, and then the air is re-flowed into the vacuum tube through the vacuum diaphragm valve. The water inside the vacuum tube quickly rushes into the bottom of the regulating reservoir to wash the silt at the bottom of the regulating reservoir. The silt is washed by the rapid release of the potential energy of the water resources inside the regulating reservoir. In this way, the dredging process does not need to use external water resources, thereby reducing the loss of water resources.

[0025] 2. This application sets a filter mesh plate and a filter plate to filter dust and impurities in the gas, thereby ensuring the normal operation of the vacuum pump in the vacuum mode and ensuring the cleanliness of the inside of the vacuum chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of Example 1 of the present application.

[0027] Figure 2 It is a cross-sectional view of the vacuum tube in Example 1 of the present application.

[0028] Figure 3 It is a cross-sectional view of the vacuum valve body in Example 1 of the present application.

[0029] Figure 4 It is a schematic diagram of the position between the filter box and the exhaust pipe in Example 2 of the present application.

[0030] Figure 5 It is a cross-sectional view of the filter screen plate and the mounting cylinder in Example 2 of the present application.

[0031] Figure 6 It is a cross-sectional view of the filter box in Example 2 of the present application.

[0032] Explanation of the reference numerals: 01, regulating reservoir; 1, connecting base; 2, vacuum tube; 3, connecting flange; 31, sealing gasket; 4, vacuum valve body; 41, air inlet chamber; 42, vacuum chamber; 5, diaphragm valve socket; 51, vacuum diaphragm valve; 52, liquid level gauge bracket; 53, radar liquid level gauge; 54, pressure transmitter; 6, silencer cap; 61, air hole; 7, exhaust pipe; 71, vacuum pump; 8, filter screen; 81, mounting cylinder; 9, filter box; 91, slide groove; 92, slider; 93, filter plate; 94, spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The embodiment of the present application discloses a vacuum flushing valve for a regulating reservoir.

[0035] Example 1

[0036] Reference Figures 1 to 3 A vacuum flushing valve for a regulating reservoir 01 includes a connecting base 1, which is fixedly installed on the ground of the reservoir. A vacuum tube 2 is fixedly installed on the bottom of the connecting base 1, and the bottom end of the vacuum tube 2 extends to the bottom of the regulating reservoir 01. The end of the vacuum tube 2 away from the bottom of the reservoir is detachably connected to a vacuum valve body 4 through a connecting flange 3. A sealing gasket 31 is installed at the connection between the vacuum valve body 4 and the vacuum tube 2. The sealing gasket 31 is used to improve the sealing performance of the vacuum valve body 4 and ensure the vacuum inside the vacuum valve body 4.

[0037] Reference Figures 1 to 3 A diaphragm valve seat 5 is fixedly installed in the vacuum valve body 4, and the upper and lower end surfaces of the diaphragm valve seat 5 divide the interior of the vacuum valve body 4 into an air inlet chamber 41 and a vacuum chamber 42. A silencer cap 6 is detachably connected to the vacuum valve body 4 through a connecting flange 3. An air hole 61 connected to the atmosphere is opened on the outer peripheral side wall of the silencer cap 6. The vacuum chamber 42 is connected to the vacuum tube 2. An exhaust pipe 7 is connected on the outer side wall of the vacuum valve body 4. One end of the exhaust pipe 7 is connected to the interior of the vacuum chamber 42, and the other end is connected to the suction end of a vacuum pump 71. The vacuum pump 71 is fixedly installed on the ground of the regulating reservoir 01. A vacuum diaphragm valve 51 is fixedly installed on the diaphragm valve seat 5. The vacuum diaphragm valve 51 is used to realize the switching of the vacuum chamber 42 and the air inlet chamber 41 to be connected or isolated.

[0038] Reference Figures 1 to 3A liquid level gauge bracket 52 is fixedly installed on one end of the diaphragm valve seat 5 close to the vacuum chamber 42, and a radar liquid level gauge 53 is installed on the liquid level gauge bracket 52 by bolts. The radar liquid level gauge 53 is used to detect the height of the water level inside the vacuum chamber 42. A pressure transmitter 54 is installed on one end of the diaphragm valve seat 5 close to the air inlet chamber 41 by bolts. The pressure transmitter 54 is used to monitor the pressure on both sides of the diaphragm valve seat 5 to ensure that the preset vacuum level is reached in the vacuum chamber 42. The radar liquid level gauge 53 and the pressure transmitter 54 are both electrically connected to the vacuum diaphragm valve 51 through a control system.

[0039] The implementation principle of a vacuum flushing valve for a regulating reservoir 01 in Example 1 of the present application is as follows: when it is necessary to clean the regulating reservoir 01, the vacuum diaphragm valve 51 is closed and the vacuum pump 71 is started. The vacuum pump 71 extracts the air inside the vacuum chamber 42 and the vacuum tube 2 through the exhaust pipe 7. The pressure inside the vacuum chamber 42 and the vacuum tube 2 is reduced. The water inside the regulating reservoir 01 flows into the vacuum chamber 42 under the action of the water pressure. When the radar level meter 53 detects that the water level inside the vacuum chamber 42 reaches the preset water level, the control system controls the vacuum pump 71 to close and starts the vacuum diaphragm valve 51. 1. The air inlet chamber 41 is connected with the vacuum chamber 42. A large amount of air enters the air inlet chamber through the air hole 61 and flows into the large vacuum chamber 42 under the pressure difference. The addition of gas destroys the vacuum degree in the vacuum chamber 42. The water inside the vacuum chamber 42 and the vacuum tube 2 quickly rushes into the bottom of the regulating reservoir 01 under the action of gravitational potential energy, and washes the silt at the bottom of the regulating reservoir 01. The silt is washed by the rapid release of the potential energy of the water resources inside the regulating reservoir 01. This arrangement makes it unnecessary to use external water resources during the dredging process, thereby reducing the loss of water resources.

[0040] Example 2

[0041] Reference Figures 4 to 6 The difference between Example 2 and Example 1 is that a filter screen plate 8 is slidably connected to the inner wall of the air inlet chamber 41 near one end of the silencer cap 6. The filter screen plate 8 is used to filter dust and impurities in the air. A mounting tube 81 is fixedly connected to the outer peripheral surface of the filter screen plate 8. The mounting tube 81 is threadedly connected to the bottom end of the silencer cap 6. The setting of the filter screen plate 8 realizes the filtering of the air in the air inlet chamber 41, reduces the possibility of dust and impurities in the air entering the vacuum chamber 42 through the air inlet chamber 41, thereby improving the cleanliness of the vacuum chamber 42, ensuring the water flushing effect of the vacuum chamber 42 and the vacuum tube 2 on the sludge, and at the same time reducing the filtering pressure of the filter plate 93. The threaded connection method is convenient for workers to remove the filter screen plate 8 for cleaning, thereby ensuring the filtering effect of the filter screen plate 8.

[0042] Reference Figures 4 to 6, one end of the exhaust pipe 7 close to the vacuum valve body 4 is detachably connected to the filter box 9 through the connecting flange 3, the interior of the filter box 9 is connected to the exhaust pipe 7, and slide grooves 91 are provided on the inner side walls at the opposite ends of the filter box 9, each slide groove 91 is slidably connected with a slider 92, and a filter plate 93 is commonly connected between the two sliders 92. The filter plate 93 is used to filter particulate impurities, and the outer surface of the filter plate 93 is tightly fitted with the inner wall of the filter box 9, and a spring 94 is arranged inside the slide groove 91, one end of the spring 94 is fixedly connected to the inner side wall of the slide groove 91 facing the vacuum pump 71, and the other end is connected to the slider 92. When the spring 94 is in a natural state, the slider 92 abuts against the inner side wall of the slide groove 91 close to the vacuum valve body 4.

[0043] The implementation principle of Example 2 is as follows: when the inner wall of the vacuum chamber 42 contacts the water in the regulating reservoir 01, some particulate impurities will inevitably adhere to it. When the vacuum pump 71 extracts gas, the gas containing particulate impurities moves to the filter box 9 through the suction pipe 7. When the particulate impurities in the gas contact the filter plate 93, they are intercepted by the filter plate 93, thereby reducing the content of particulate impurities entering the vacuum pump 71 through the suction pipe 7, effectively reducing the influence of the particulate impurities on the vacuum pump 71, and ensuring the smooth progress of the dredging process.

[0044] At the same time, during the process of continuous inhalation of gas in the vacuum chamber 42, the airflow continuously impacts the filter plate 93 to move the filter plate 93 toward the direction close to the vacuum pump 71, and the spring 94 is compressed by the filter plate 93. When the vacuum pump 71 is turned off, the elastic potential energy accumulated in the spring 94 is instantly released, and the spring 94 pushes the filter plate 93 to hit the inner wall of the slide groove 91. At this time, the filter plate 93 vibrates, and particulate impurities adhered to or accumulated on the filter holes of the filter plate 93 fall into the bottom of the filter box 9. When there are too many particulate impurities accumulated inside the filter box 9, the worker can disassemble the filter box 9 through the connecting flange 3 to clean the inside of the filter box 9. This arrangement ensures the filtering effect of the filter plate 93 while achieving centralized cleaning of particulate impurities, further improving the convenience of workers' operation.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum flushing valve for a regulating reservoir, comprising a connecting base (1), wherein the connecting base (1) is arranged at the top of a reservoir, a vacuum tube (2) is arranged on the connecting base (1), and the bottom end of the vacuum tube (2) extends to the inside of the reservoir, characterized in that: The vacuum tube (2) is provided with a vacuum valve body (4), and a diaphragm valve seat (5) is provided inside the vacuum valve body (4). The diaphragm valve seat (5) divides the interior of the vacuum valve body (4) into an air intake chamber (41) and a vacuum chamber (42). The air intake chamber (41) is connected to the outside atmosphere, and the vacuum chamber (42) is connected to the vacuum tube (2). An exhaust pipe (7) is provided on the outer wall of the vacuum valve body (4), one end of the exhaust pipe (7) is connected to the interior of the vacuum chamber (42), and the other end is provided with a vacuum pump (71). A vacuum diaphragm valve (51) is provided on the diaphragm valve seat (5).

2. A vacuum flushing valve for a regulating reservoir according to claim 1, characterized in that: The top end of the vacuum valve body (4) is detachably connected to a silencer cap (6) via a connecting flange (3), and a plurality of air holes (61) are provided on the outer peripheral side wall of the silencer cap (6).

3. A vacuum flushing valve for a regulating reservoir according to claim 1, characterized in that: A liquid level gauge bracket (52) is provided on one end of the diaphragm valve seat (5) close to the vacuum chamber (42), and a radar liquid level gauge (53) is provided on the liquid level gauge bracket (52). The radar liquid level gauge (53) is electrically connected to the vacuum diaphragm valve (51) through a control system.

4. A vacuum flushing valve for a regulating reservoir according to claim 1, characterized in that: A pressure transmitter (54) is provided at one end of the diaphragm valve seat (5) close to the air inlet cavity (41).

5. A vacuum flushing valve for a regulating reservoir according to claim 1, characterized in that: The vacuum valve body (4) is detachably connected to the vacuum tube (2) via a connecting flange (3), and a sealing gasket (31) is provided at the connection between the vacuum valve body (4) and the vacuum tube (2).

6. A vacuum flushing valve for a regulating reservoir according to claim 1, characterized in that: A filter box (9) is provided at one end of the air extraction pipe (7) close to the vacuum valve body (4); the filter box (9) is in communication with the interior of the air extraction pipe (7); and a filter plate (93) is provided in the filter box (9).

7. A vacuum flushing valve for a regulating reservoir according to claim 6, characterized in that: The filter box (9) is detachably connected to the exhaust pipe (7) via a connecting flange (3); sliders (92) are provided on two opposite end faces of the filter plate (93); a slide groove (91) slidably matched with the slider (92) is provided on the opposite side walls of the filter box (9); a spring (94) is provided in the slide groove (91); one end of the spring (94) is connected to the inner side wall of the slide groove (91) facing the vacuum pump (71), and the other end is connected to the slider (92); when the spring (94) is in a natural state, the slider (92) abuts against the inner side wall of the slide groove (91) close to the vacuum valve body (4).

8. A vacuum flushing valve for a regulating reservoir according to claim 2, characterized in that: A filter screen plate (8) is arranged in the air inlet cavity (41), and a mounting tube (81) is arranged on the outer peripheral side wall of the filter screen plate (8), and the mounting tube (81) is threadedly connected to one end of the silencer cap (6) close to the air inlet cavity (41).

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