Vacuum well energy storage pumping system and vacuum drainage system

Abstract

The utility model relates to a vacuum well energy storage pumping system and a vacuum drainage system, which comprise a pipe clamp valve, a pressure storage device and a switching valve, the pipe clamp valve is arranged between a vacuum pipeline and a vacuum well, the input end of the pressure storage device is connected with the vacuum pipeline, and the output end of the pressure storage device and the control port of the pipe clamp valve are both connected with the switching valve. By arranging the pressure storage device, the situation that water pumping is stopped due to the fact that the pipe clamp valve is closed when the vacuum pressure of the vacuum pipeline is insufficient is avoided, continuous water pumping is achieved, and normal operation of each independent vacuum well system and the whole vacuum drainage system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum well water pumping, in particular to a vacuum well energy storage water pumping system and a vacuum drainage system. Background Art

[0002] The pipe clamp valve is also called the pipe clamp valve, airbag valve or clamp valve, etc., and is widely used in various types of pipelines. According to the driving mode, the pipe clamp valve can be divided into manual pipe clamp valve, vacuum well energy storage pumping system, electric pipe clamp valve and hydraulic pipe clamp valve, among which the vacuum well energy storage pumping system is the most common.

[0003] In the prior art, the pipe clamp valve is often used in the vacuum well system. When pumping water, one end of the flow hose of the pipe clamp valve is connected to the vacuum pipe, and the other end is connected to the vacuum well. The control port of the pipe clamp valve is connected to the vacuum pipe. When the vacuum negative pressure is applied to the control port, the pipe clamp valve opens, the two ends of the flow hose are connected, and water pumping begins. During the water pumping process, the vacuum negative pressure in the vacuum pipe decreases (if the vacuum negative pressure decreases, the suction force is insufficient), and the vacuum negative pressure at the control port also decreases. The diaphragm will slowly move to close the valve under the gradually decreasing vacuum suction force. After the valve is closed, the vacuum negative pressure in the vacuum pipe returns to its original value, so the valve will continue to open. In this way, the pipe clamp valve opens and closes to form a cycle, and water pumping becomes intermittent, affecting the normal operation of the pumping system.

[0004] Furthermore, in the entire vacuum drainage system, generally, the vacuum delivery pipeline of a vacuum station will be connected to dozens or hundreds of vacuum well systems. When one or more of the vacuum well systems are started, the vacuum negative pressure in the vacuum delivery pipeline will decrease. When the vacuum negative pressure decreases, the vacuum negative pressure applied to the vacuum valve in the vacuum well will also decrease accordingly. According to the prior art, the vacuum valve will be fully opened at the starting pressure value, and will be closed when the vacuum negative pressure is 0. When the vacuum negative pressure value applied to the vacuum valve is between 0 and the starting pressure value, the vacuum valve is in a semi-open state. The garbage that could have been pumped away when the vacuum valve was fully opened will slowly be blocked in the drainage pipeline at the vacuum valve, causing the drainage pipeline to be blocked, resulting in abnormal drainage of the vacuum well system.

[0005] Based on this, this embodiment provides a vacuum well energy storage pumping system to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a vacuum well energy storage pumping system and a vacuum drainage system, which solves the problem of closing the pipe clamp valve to stop pumping due to insufficient vacuum pressure in the vacuum pipeline, thereby realizing continuous pumping of the vacuum well system; and ensuring the normal operation of the entire vacuum drainage system.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a vacuum well energy storage pumping system, including a pipe clamp valve, a pressure storage device and a switching valve, the pipe clamp valve is arranged between the vacuum pipeline and the vacuum well, the input end of the pressure storage device is connected to the vacuum pipeline, and the output end of the pressure storage device and the control port of the pipe clamp valve are respectively connected to the switching valve.

[0008] Furthermore, a check valve is provided on the connecting pipeline between the pressure storage device and the vacuum pipeline, so that the vacuum negative pressure in the vacuum pipeline can enter the pressure storage device in one direction.

[0009] Furthermore, a liquid level detector is provided in the vacuum well.

[0010] Furthermore, the tube clamp valve includes a valve body and a flow hose inserted in the valve body, a pneumatic chamber is provided in the middle of the valve body, the pneumatic chambers are arranged in pairs and symmetrically along the central axis of the flow hose, a valve core is provided in the pneumatic chamber, and the air pressure change in the pneumatic chamber can drive the valve core to clamp or loosen the flow hose to realize the opening and closing of the valve body.

[0011] Furthermore, an end cover is provided on the outside of the valve core, and the end cover is fixedly connected to the valve body; a control port is provided on the end cover.

[0012] Furthermore, the valve core is installed on the valve body through a valve core seat, and the valve core seat has a through hole, and the valve core can move in the through hole.

[0013] Furthermore, a diaphragm is provided in the pneumatic chamber, one end of the valve core is fixedly connected to the diaphragm, and the other end can move in the valve body seat; the diaphragm divides the pneumatic chamber into two air chambers that are not connected to each other, and the air pressure difference formed by the two air chambers can drive the diaphragm to deform, thereby driving the valve core to loosen the flow hose, thereby opening the valve.

[0014] Furthermore, a spring is provided between the diaphragm and the end cover, and the diaphragm can compress the spring when it is deformed and moved upward.

[0015] Furthermore, the valve core seat is also provided with an air hole.

[0016] The utility model also provides a vacuum drainage system, comprising the above-mentioned vacuum well energy storage water pumping system.

[0017] The beneficial effects of the utility model are:

[0018] 1. The vacuum well energy storage pumping system of the utility model, by providing a pressure storage device, avoids the occurrence of the situation where the pipe clamp valve is closed and the pumping is stopped due to insufficient vacuum pressure in the vacuum pipeline, and realizes continuous pumping.

[0019] 2. The pipe clamp valve in the utility model realizes the opening and closing of the pipe clamp valve by pneumatically controlling the opening and closing of the pipe clamp valve by setting a diaphragm, a spring, a valve core and a valve core seat. It has a sophisticated design, a compact structure and low operation and maintenance costs. By setting an air hole on the valve core seat, it can help the flow hose to restore its deformation to a circular shape when the pipe clamp valve is opened, thereby increasing the water pumping amount. Compared with the prior art, it only requires a smaller vacuum negative pressure to start.

[0020] 3. The vacuum drainage system of the utility model includes one or more vacuum well energy storage pumping systems. Since each unit vacuum well energy storage pumping system is provided with a pressure storage device, the normal operation of each unit vacuum well energy storage pumping system can be ensured, and it is not affected by the vacuum negative pressure value in the vacuum main channel. Each individual vacuum well energy storage pumping system can operate normally, thereby ensuring the normal operation of the entire vacuum drainage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 (valve closed, no water pumping);

[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 (Valve conduction, pumping water)

[0023] Figure 3 The structure of the pipe clamp valve of the utility model is shown in FIG. Figure 1 (valve closed);

[0024] Figure 4 The structure of the pipe clamp valve of the utility model is shown in FIG. Figure 2 (Valve conduction).

[0025] In the figure:

[0026] A pipe clamp valve 1, a valve body 11, a flow hose 12, two groups of pneumatic chambers (131, 132), a first air chamber 133, a second air chamber 134, a valve core 14, a valve core disk 141, an end cover 15, a control port 151, a valve core seat 16, an air hole 161, a diaphragm 17, a working chamber 18, a spring 19, a pressure accumulator 2, a switching valve 3, a check valve 4, a vacuum pipe 5 and a vacuum well 6. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] like Figure 1-Figure 2 The vacuum well energy storage pumping system shown comprises a pipe clamp valve 1, a pressure storage device 2 and a switching valve 3, wherein the pipe clamp valve is arranged between a vacuum pipe 5 and a vacuum well 6.

[0030] Specifically, one end of the flow hose of the pipe clamp valve is connected to the vacuum pipeline, and the other end is connected to the vacuum well. When the pipe clamp valve is opened, the vacuum well is pumped under the negative pressure of the vacuum pipeline. When the pipe clamp valve is closed, the vacuum well is stopped from being pumped.

[0031] The input end of the pressure accumulator is connected to the vacuum pipe, and the output end of the pressure accumulator and the control port of the tube clamp valve are both connected to the switching valve. The switching valve is used to control the conduction between the pressure accumulator and the tube clamp valve. When the switching valve is opened, the conduction between the pressure accumulator and the tube clamp valve is controlled, and the vacuum in the pressure accumulator is applied to the control port of the tube clamp valve. When the switching valve is closed, the non-conduction between the pressure accumulator and the tube clamp valve is controlled, and air enters the control port of the tube clamp valve.

[0032] A check valve 4 is provided on the connecting pipeline between the pressure accumulator and the vacuum pipe, so that the vacuum negative pressure in the vacuum pipe can enter the pressure accumulator in one direction. That is to say, the vacuum negative pressure in the vacuum pipe will enter the pressure accumulator, but when the vacuum negative pressure in the vacuum pipe becomes smaller, the vacuum negative pressure in the pressure accumulator will not flow back into the vacuum pipe. Therefore, the pressure accumulator can maintain the maximum vacuum negative pressure in the vacuum pipe. That is to say, when the pressure accumulator is connected to the pipe clamp valve, the vacuum negative pressure at the control port of the pipe clamp valve can remain unchanged, thereby ensuring the opening process of the pipe clamp valve.

[0033] A liquid level detector (not shown) is provided in the vacuum well to detect the liquid level. When the liquid level in the vacuum well is higher than the set threshold (high liquid level H), the pipe clamp valve opens to pump water. When the liquid level in the vacuum well is lower than the set threshold (low liquid level L), the pipe clamp valve closes to stop pumping water.

[0034] Working process of vacuum well energy storage pumping system:

[0035] In the initial state, the vacuum negative pressure in the vacuum pipe fills the pressure storage device.

[0036] When the liquid level in the vacuum well is higher than the set threshold, the switching valve opens, and the vacuum negative pressure in the pressure accumulator is applied to the control port of the tube clamp valve. The tube clamp valve opens, and the two ends of the flow hose are connected, and water starts to be pumped under the vacuum suction of the vacuum pipeline. The vacuum negative pressure in the vacuum pipeline becomes smaller. Due to the setting of the check valve, the vacuum in the pressure accumulator will not flow back into the vacuum pipeline. The vacuum negative pressure value at the control port of the tube clamp valve is stable, and it remains in the open state to continue pumping water. When the liquid level in the vacuum well is lower than the set threshold, the switching valve is closed, the control port of the tube clamp valve is at atmospheric pressure, the tube clamp valve is closed, the valve core clamps the flow hose, pumping stops, the vacuum pipeline returns to the maximum vacuum negative pressure, and the vacuum negative pressure is filled into the pressure accumulator, waiting for the next pumping action.

[0037] The traditional pinch valve requires a complex air pressure control system and has high operation and maintenance costs. The pinch valve in this embodiment has a sophisticated structure design and has the advantage of low operation and maintenance costs. The specific structure is as follows:

[0038] like Figure 3-Figure 4 As shown, the pipe clamp valve comprises a valve body 11 and a flow hose 12 inserted in the valve body, a pneumatic chamber is arranged in the middle of the valve body, and two groups of pneumatic chambers are arranged, and the two groups of pneumatic chambers (131, 132) are symmetrically arranged along the central axis of the flow hose, respectively, and valve cores 14 are arranged in both groups of pneumatic chambers. When the two groups of valve cores are close to each other to clamp the flow hose, the valve is closed, and when the two groups of valve cores are away from each other to release the clamping, the valve is opened; the air pressure change in the pneumatic chamber can drive the valve core to approach or move away to clamp or release the flow hose, thereby realizing the on-off of the valve body;

[0039] An end cover 15 is disposed outside the valve core, the end cover is fixedly connected to the valve body, and a control port 151 is disposed on the end cover.

[0040] The valve core is installed on the valve body through the valve core seat 16. The middle of the valve core seat has a through hole (not shown in the figure), and the valve core can move in the through hole.

[0041] A diaphragm 17 is provided in the pneumatic chamber, and the diaphragm 17 is sealed and connected to the end cover 15. One end of the valve core is fixedly connected to the diaphragm through a valve core disk 141, and the other end can move in the valve body seat; the diaphragm divides the pneumatic chamber into two air chambers that are not connected to each other. The air pressure difference formed in the two air chambers can drive the diaphragm to deform, so as to drive the valve core to move to loosen the flow hose, thereby opening the valve; specifically in this embodiment, the diaphragm is sealed and connected to the end cover to form a first air chamber 133, and the diaphragm 17 and the valve core seat form a second air chamber 134. The first air chamber and the second air chamber are not connected to each other. The space formed between the inner wall of the valve body and the valve core seat is a working chamber 18, the flow hose is arranged in the working chamber and its two ends pass through the valve body. A spring 19 is provided in the first air chamber, and the valve core is arranged in the second air chamber and its end passes through the second air chamber and moves in the working chamber to squeeze the flow hose.

[0042] The first air chamber is connected to the control port. When vacuum negative pressure is applied to the control port, the first air chamber is filled with vacuum negative pressure, and an air pressure difference is generated between the first air chamber and the second air chamber. The diaphragm is deformed and concave toward the first air chamber due to the vacuum negative pressure, driving the valve core to move upward, opening the valve, and connecting the two ends of the flow hose. A spring is provided between the diaphragm and the end cover. When the diaphragm is deformed and moves upward, the spring is squeezed. When normal air pressure is applied to the control port, the first air chamber is gradually filled with air, and the air pressure difference between the first air chamber and the second air chamber gradually decreases to air pressure balance. Under the combined action of the air pressure difference and the reaction force of the spring, the diaphragm slowly moves downward to clamp the flow hose, that is, the valve is closed, and the two ends of the flow hose are not connected.

[0043] In the prior art, when the two valve cores of the pipe clamp valve are loosened to clamp the flow hose, that is, when the valve is opened, the flow hose is difficult to return to the round tube, and the tube wall will be dented, which will reduce the flow cross-sectional area of ​​the flow hose and reduce the unit water pumping volume at the same flow rate, thereby affecting the water pumping effect. For this reason, the valve core seat is also provided with an air hole 161, which is used to connect the working chamber and the second air chamber. When the control port applies vacuum negative pressure, the diaphragm drives the valve core to move upward. Due to the existence of the air hole (the end cover and the valve body are not sealed), the vacuum suction force will be transmitted to the flow hose, sucking the flow hose into the round tube (the cross-section of the flow hose is circular), the flow cross-sectional area of ​​the flow hose remains unchanged, and the unit water pumping volume at the same flow rate remains unchanged. Compared with the hose with a dented tube wall in the prior art, the flow rate of the flow hose in this embodiment is large.

[0044] In the prior art, the normal starting pressure of the vacuum well energy storage pumping system is 2 kg, and the absolute vacuum negative pressure is 1 kg. The greater the starting pressure of the vacuum well energy storage pumping system, the stricter the requirements for the entire vacuum system (the vacuum negative pressure of the vacuum station, the vacuum transmission loss). Considering the driving force of the diaphragm driven by air pressure, the compression force of the spring that the valve core disk needs to overcome when the diaphragm moves upward, etc., therefore, when the starting pipe clamp valve in this embodiment is actually produced, the specifications of the spring (length, diameter, number of turns, etc.), the material of the diaphragm (deformation coefficient), and the area of ​​the valve core disk are comprehensively considered and calculated, so that the normal starting pressure of the starting pipe clamp valve in this embodiment is only 0.15 kg.

[0045] When vacuum negative pressure is applied to the control port, the first air chamber is filled with vacuum negative pressure, and a pressure difference is formed between the first air chamber and the second air chamber. The diaphragm is deformed into the first air chamber due to the vacuum negative pressure, driving the valve core to move upward and squeezing the spring at the same time, the valve opens, and the two ends of the flow hose are connected; when normal air pressure is applied to the control port, the first air chamber is gradually filled with air, and the pressure difference between the first air chamber and the second air chamber gradually decreases. Under the combined action of the pressure difference and the reaction force of the spring, the diaphragm slowly moves downward to clamp the flow hose, the valve is closed, and the two ends of the flow hose are not connected; since the valve core seat is provided with an air hole, when the valve core releases the flow hose, the flow hose will be sucked back to the round tube, and the tube wall will not be dented.

[0046] Embodiment 2: A vacuum drainage system, comprising one or more vacuum well energy storage pumping systems described in Embodiment 1.

[0047] The vacuum drainage system includes a vacuum station and a vacuum trunk road. The vacuum trunk road transmits the vacuum negative pressure of the vacuum station to each vacuum well energy storage and pumping system. The vacuum pipeline of the vacuum well energy storage and pumping system is connected to the vacuum trunk road.

[0048] Since each unit vacuum well energy storage pumping system is equipped with a pressure storage device, it can ensure the normal operation of each unit vacuum well energy storage pumping system and is not affected by the vacuum negative pressure value in the vacuum main channel. Each individual vacuum well energy storage pumping system can operate normally, thereby ensuring the normal operation of the entire vacuum drainage system.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0051] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vacuum well energy storage pumping system, characterized in that: It includes a pipe clamp valve, a pressure storage device and a switching valve. The pipe clamp valve is arranged between a vacuum pipeline and a vacuum well. The input end of the pressure storage device is connected to the vacuum pipeline. The output end of the pressure storage device and the control port of the pipe clamp valve are respectively connected to the switching valve.

2. The vacuum well energy storage pumping system according to claim 1 is characterized in that: A check valve is provided on the connecting pipeline between the pressure storage device and the vacuum pipeline to allow the vacuum negative pressure in the vacuum pipeline to enter the pressure storage device in one direction.

3. The vacuum well energy storage pumping system according to claim 1 is characterized in that: A liquid level detector is arranged in the vacuum well.

4. The vacuum well energy storage pumping system according to claim 1 is characterized in that: The pipe clamp valve includes a valve body and a flow hose inserted in the valve body. A pneumatic chamber is provided in the middle of the valve body. The pneumatic chambers are arranged in pairs and are symmetrical along the central axis of the flow hose. A valve core is provided in the pneumatic chamber. The change of air pressure in the pneumatic chamber can drive the valve core to clamp or loosen the flow hose to realize the opening and closing of the valve body.

5. The vacuum well energy storage pumping system according to claim 4 is characterized in that: An end cover is arranged outside the valve core, and the end cover is fixedly connected to the valve body; a control port is arranged on the end cover.

6. The vacuum well energy storage pumping system according to claim 5, characterized in that: The valve core is installed on the valve body through a valve core seat. The valve core seat has a through hole, and the valve core can move in the through hole.

7. The vacuum well energy storage pumping system according to claim 6, characterized in that: A diaphragm is provided in the pneumatic chamber, one end of the valve core is fixedly connected to the diaphragm, and the other end can move in the valve body seat; the diaphragm divides the pneumatic chamber into two air chambers that are not connected to each other, and the air pressure difference formed by the two air chambers can drive the diaphragm to deform, thereby driving the valve core to loosen the flow hose, thereby opening the valve.

8. The vacuum well energy storage pumping system according to claim 7, characterized in that: A spring is arranged between the diaphragm and the end cover, and the diaphragm can compress the spring when it is deformed and moved upward.

9. The vacuum well energy storage pumping system according to claim 6, characterized in that: The valve core seat is also provided with an air hole.

10. A vacuum drainage system, characterized in that: The invention comprises at least one vacuum well energy storage pumping system as described in any one of claims 1 to 9.

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