CN216739916U

CN216739916U - Multi-valve type vacuum negative pressure well structure

Info

Publication number: CN216739916U
Application number: CN202122317172.XU
Authority: CN
Inventors: 张希圣
Original assignee: Suzhou Zhonglu Environmental Protection Equipment Co ltd
Current assignee: Suzhou Zhonglu Environmental Protection Equipment Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-06-14
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a multi-valve vacuum negative pressure well structure, wherein at least two groups of parallel water pumping mechanisms are arranged in a vacuum negative pressure well, all the water pumping mechanisms respectively comprise vacuum valves and water pumping pipes, the vacuum valves are arranged on the water pumping pipes, and the vacuum valves are connected with mechanical controllers for controlling the opening and the closing of the vacuum valves. The utility model provides a multi-valve vacuum negative pressure well structure, which realizes the purpose of large-conveying-capacity vacuum pumping and drainage and solves the problem of limitation of the pumping capacity of a vacuum well of a large sewage drainage point of a vacuum negative pressure sewage collection system.

Description

Multi-valve type vacuum negative pressure well structure

Technical Field

The utility model belongs to the technical field of water treatment devices, and particularly relates to a multi-valve type vacuum negative-pressure well structure.

Background

The vacuum sewage drainage system is used for collecting single farmhouse and single villa, and simultaneously collecting all other sewage drainage points in the collecting areaThe sewage is collected at a plurality of large-scale sewage and drainage points including hotels, multi-family residential collections, market supermarkets, bathing places and the like. At these large displacement points, e.g. using standard vacuum wells 2^”、3^”The bore vacuum valve pumps the sewage with a pumping capacity of 3^”The aperture valve is 0.1-0.12m3/min instant throughput, 2^”The bore valve is 0.06-0.08m3/min instantaneous throughput, so when large water flows into the vacuum well, no load or even flooding problems can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a multi-valve vacuum negative pressure well structure, realizing the purpose of large-conveying-capacity vacuum pumping and drainage and solving the problem of limitation of the pumping capacity of a vacuum well of a large sewage drainage point of a vacuum negative pressure sewage collection system.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a many valve type vacuum negative-pressure well structure, be equipped with at least two sets of parallelly connected mechanisms of drawing water in the vacuum negative-pressure well, all draw water the mechanism and include vacuum valve and drinking-water pipe respectively, the vacuum valve is installed in the drinking-water pipe, the vacuum valve is connected with the opening and closing control ware that controls it to open and close.

Furthermore, 1 water storage tank is arranged in the vacuum negative pressure well, and at least 2 groups of water pumping mechanisms are arranged in the water storage tanks;

or a plurality of water storage tanks are arranged in the vacuum negative pressure well, at least 1 group of water pumping mechanisms are arranged in each water storage tank, and the total amount of the water pumping mechanisms in the vacuum negative pressure well is more than or equal to that of the water storage tanks.

Furthermore, each water storage tank is controlled by a single opening and closing controller;

or, each vacuum valve is correspondingly and independently controlled by a single opening and closing controller.

Further, the opening and closing controller is an electromagnetic controller or a mechanical controller.

The mechanical controller comprises a sliding shaft and air chamber groups arranged on two sides of the sliding shaft, the sliding shaft is provided with a channel capable of being connected with the air chamber groups on the two sides, and the sliding shaft can reciprocate along the axial direction of the sliding shaft to realize switching conduction of the air chamber groups on the two sides;

furthermore, a plurality of sealing rings are arranged on the periphery of the sliding shaft, and the channel is formed between every two adjacent sealing rings.

Further, the sliding shaft is connected with a floating piece, and the floating piece floats up and down along with the liquid level change of the liquid level so as to drive the sliding shaft to reciprocate back and forth.

The mechanical controller is characterized in that the sliding shaft is connected with the floating part through a transmission assembly, the transmission assembly comprises a fixed sleeve and a transmission rod, the fixed sleeve and the transmission rod are sleeved inside and outside, the fixed sleeve is fixedly connected with the mechanical controller, the lower end of the transmission rod is fixedly connected with the floating part, the transmission rod and the floating part move synchronously, the upper end of the transmission rod is connected with the sliding shaft of the converter through a shifting rod, and the shifting rod shifts the sliding shaft to reciprocate.

Furthermore, the center of the shifting lever is rotationally connected with the converter, the transmission rod is provided with a high-low limiting point, and the high-low limiting point and the low-high limiting point of the transmission rod respectively touch one end of the shifting lever to drive the other end of the shifting lever to drive the sliding shaft to reciprocate back and forth.

Furthermore, the number of the air chambers on one side of the sliding shaft is one less than that of the air chambers on the other side of the sliding shaft, and the air chambers on the two sides are arranged in a staggered manner;

one side of the sliding shaft is at least provided with two air chambers and is respectively connected with two air ports of the vacuum valve, and the other side of the sliding shaft is provided with at least 3 air chambers and is positioned at the outlet end of the middle air chamber connected with the vacuum valve.

The vacuum valve comprises an upper shell, a lower shell, a spring, a valve plate assembly and an elastic diaphragm, wherein the elastic diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed by the elastic diaphragm and are not communicated with each other;

the spring is arranged in the upper shell and connected with the elastic diaphragm, and the elastic diaphragm can extrude the spring and recover deformation under the acting force of the spring when being deformed to move towards the upper shell; the valve plate assembly is arranged in the lower shell and connected with the elastic diaphragm, and the elastic diaphragm can drive the valve plate assembly to synchronously move when deformed to generate displacement so as to realize the opening and closing of the vacuum diaphragm valve;

the valve plate assembly comprises a traction shaft and a valve plate, one end of the traction shaft is connected with the elastic diaphragm, the other end of the traction shaft is connected with the valve plate, and the traction shaft drives the valve plate to move along with the deformation displacement of the elastic diaphragm.

The utility model has the beneficial effects that:

1. the utility model adopts a plurality of groups of vacuum valves to simultaneously run in parallel, improves the drainage of the vacuum negative pressure well to several times, and realizes the transportation of a large amount of sewage; the repeated construction of more vacuum wells in the same area is not needed, so that the cost is lower and the occupied area is smaller while the water discharge is improved;

moreover, the water storage tanks connected in parallel are arranged to collect sewage simultaneously, the situation that the vacuum valves or the mechanical controller in the single water storage tank fail to operate in the whole vacuum well is avoided, the operation efficiency of the equipment is improved, and the continuity of drainage is kept.

2. The utility model can convert the water level change potential energy in the vacuum well into mechanical transmission without electric power so as to trigger the mechanical controller, and utilizes the stable vacuum negative pressure in the water absorption pipe section to drive the vacuum valve in the vacuum well to open and close, thereby saving the operation cost and having strong practicability.

3. The vacuum valve is characterized in that a spring is arranged in an upper shell of the vacuum valve and is connected with an elastic diaphragm, the elastic diaphragm can be extruded when being deformed under the action of air pressure to move towards the upper shell and can recover the deformation under the action of the spring, and the spring has the main functions of slowing down the rapid upward moving speed of the elastic diaphragm caused by negative pressure vacuum and limiting the upward moving distance of the elastic diaphragm, namely limiting the deformation speed and the deformation size of the elastic diaphragm; then, when the lower air pressure cavity is connected with negative pressure and the upper air pressure cavity is connected with atmospheric pressure, the elastic diaphragm is pressed to generate downward movement deformation, at the moment, the spring can generate the resilience force of the deformed spring due to the compression state of the previous stage to add and assist in pushing the elastic diaphragm to move downward, at the moment, the elastic diaphragm pushes the valve plate to be tightly attached to the closing point of the valve body in the pipe section to be sealed, the valve body is turned off, and water flow is cut off; when the vacuum negative pressure valve is actually used, the compression and restoring force of the spring must be accurately tested and adjusted, so that the pressing closing action of the vacuum negative pressure valve body can be more smooth and guaranteed;

and due to the existence of the spring, the problem that the elastic diaphragm is easy to damage under high deformation can be reduced, the service life of the elastic diaphragm is prolonged, and the service life of the vacuum diaphragm valve is further prolonged.

4. The valve plate of the vacuum valve is made of solid hard plastic and is designed into a flat plate shape, a hammer-like shape, a conical shape or a water drop shape, so that when the valve plate is opened, a gap is not easy to generate between the valve plate and the outer shell of the valve plate, and foreign matter clamping seams are not easy to generate, so that the problem that the valve body is clamped and cannot move is caused; in order to ensure that the shut-off valve plate can be fully jointed with the valve body closing opening, so that the vacuum attraction of the valve body closing opening cannot leak to cause the problem of pressure relief, the valve plate is designed into an integrally-wrapped rubber or contact area annular rubber ring design, and the sealing of a pipe section can be fully exerted;

5. the traction shaft of the vacuum valve has an included angle with the water flow direction, the included angle is 30-75 degrees, so that the traction shaft of the valve plate can keep the same angle to slide up and down, the valve plate vertical to the traction shaft can be in close contact with a valve body closing opening in the pipe section by an inclined plane at the same angle (30-75 degrees), and the valve plate and the pipe section are in joint angle, so that the valve plate has larger contact area in the pipe section, the vacuum attraction of the water outlet is larger and stronger, the valve plate is fully attracted to act on the valve plate, a better close contact effect is generated, and the vacuum negative pressure valve is closed more tightly.

The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

Drawings

FIG. 1 is a first schematic structural view (a reservoir tank with 2 sets of pumping mechanisms connected in parallel) of an embodiment 1 of the present invention;

FIG. 2 is a second schematic structural view of embodiment 1 of the present invention (one reservoir with 3 sets of pumping mechanisms connected in parallel);

FIG. 3 is a third schematic view of the structure of embodiment 1 of the present invention (one reservoir, wherein 4 sets of pumping mechanisms are arranged in parallel in the reservoir);

FIG. 4 is a first schematic structural view (two reservoirs, 2 sets of pumping mechanisms) of embodiment 4 of the present invention;

FIG. 5 is a second schematic structural view (two reservoirs, 3 sets of pumping mechanisms) of embodiment 4 of the present invention;

FIG. 6 is a schematic view of the structure of example 4 of the present invention (two reservoirs, 4 sets of pumping mechanisms);

FIG. 7 is a detailed combination diagram (level up) of the present invention with the vacuum valve open;

FIG. 8 is a concrete and linked diagram (level down) of the present invention in a vacuum valve closed state;

FIG. 9 is a first structural view (liquid level down, sliding shaft up) of the mechanical controller of the present invention;

FIG. 10 is a second schematic structural view of the mechanical controller of the present invention (liquid level up, slide shaft down);

FIG. 11 is a first schematic view of the air chamber assembly according to the present invention (sliding shaft moving upwards);

fig. 12 is a second schematic structural view of the air chamber assembly of the present invention (sliding shaft moves downward);

FIG. 13 is a first schematic view (valve body open state) of the vacuum valve of the present invention;

FIG. 14 is a second schematic structural view of the vacuum valve of the present invention (valve body closed state);

FIG. 15 is a first schematic structural view of a vacuum sub-well according to the present invention;

FIG. 16 is a second schematic structural view of a vacuum sub-well according to the present invention;

the parts in the drawings are marked as follows:

converter 1, air chambers (14,15) on one side, air chambers (11,12,13) on the other side, sliding shaft 16, floating piece 17, counterweight 171, fixing sleeve 18, transmission rod 19, high-position limit point 191, low-position limit point 192, deflector rod 110, sealing ring 111, fixing pivot 112 and two parallel vacuum valves (2, 2)^’) Upper part ofThe air compressor comprises a shell 21, a lower shell 22, a spring 23, a valve plate assembly 24, a traction shaft 241, a rubber ring 2411, a valve plate 242, an elastic diaphragm 25, an upper air pressure cavity air vent 26 and a lower air pressure cavity air vent 26^’The water pumping device comprises a pipe section 27, a water inlet 271, a water outlet 272, a valve body closing port 29, a vacuum negative pressure well 3, a water storage tank 31, a water pumping pipe 4 and two groups of water pumping mechanisms (5, 5) connected in parallel^’)。

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention will be described in detail with reference to the accompanying drawings. The utility model may be embodied in other different forms, i.e. it is capable of various modifications and changes without departing from the scope of the utility model as disclosed.

Example 1: a multi-valve vacuum negative pressure well structure is disclosed, as shown in figure 1-figure 3, at least two groups of parallel pumping mechanisms (5, 5) are arranged in the vacuum negative pressure well 3^’) The water pumping mechanism comprises a vacuum valve and a water pumping pipe 4 respectively, the vacuum valve is installed on the water pumping pipe, and the vacuum valve is connected with an opening and closing controller for controlling the opening and closing of the vacuum valve.

The vacuum negative pressure well is internally provided with 1 water storage tank 31, at least 2 groups of water pumping mechanisms connected in parallel are arranged in the water storage tank, in the embodiment, 2 groups of water pumping mechanisms are taken as an example, and 2 groups of water pumping mechanisms are provided with two groups of vacuum valves (2, 2'). The 2 groups of water pumping mechanisms in the water storage tank are simultaneously controlled by one opening and closing controller, namely the 2 groups of water pumping mechanisms in the water storage tank share 1 opening and closing controller, as shown in figure 1.

And the output end of the water pumping mechanism is respectively connected with a main pipe for vacuum drainage.

The opening and closing controller is a mechanical controller 1.

As shown in fig. 9 to 12, the mechanical controller 1 includes a sliding shaft 16 and air chamber groups disposed on both sides of the sliding shaft, the sliding shaft has a passage capable of connecting the air chamber groups on both sides, and the sliding shaft can reciprocate along the axial direction of the sliding shaft to realize switching conduction of the air chamber groups on both sides.

The number of the air chambers on one side of the sliding shaft is one less than that of the air chambers on the other side of the sliding shaft, and the air chambers on the two sides need to be arranged in a staggered manner due to the different numbers of the air chambers on the two sides; one side of the sliding shaft is at least provided with two air chambers which are respectively connected with two air ports of the vacuum valve, and the other side of the sliding shaft is provided with at least 3 air chambers which are positioned in the middle and connected with a continuous vacuum negative pressure suction source in a vacuum main pipeline at the outlet end of the vacuum negative pressure valve.

The interfaces of all the air chambers are designed into internal screw thread shapes, so that the connection of subsequent special pipelines is facilitated.

As shown in fig. 11-12, one side of the sliding shaft is provided with two air chambers (14,15) and the air chamber 15 is located above the air chamber 14, the other side is provided with 3 air chambers (11,12,13), the air chamber 13 is located above the air chamber 12 and the air chamber 11 is located between the air chamber 13 and the air chamber 12. The reciprocating motion of the sliding shaft can lead the air chambers (14,15) and the air chambers (11,12,13) to be respectively communicated.

The specific structure of the channel is as follows: a plurality of sealing rings 111 are arranged at intervals on the periphery of the sliding shaft, and a channel is formed between every two adjacent sealing rings; the position layout of the sealing ring is specially designed, when the sealing ring slides along with the sliding shaft, the air chambers of the air chamber groups at the two sides can be kept long and communicated, and the transmission and the conversion of two air streams are completed; the switching of the air chambers is realized by the dislocation movement of the sliding shaft and the sealing ring on the shaft; when the sliding shaft moves upwards, the air chamber 11 is communicated with the air chamber 14, and simultaneously, the air chamber 13 is communicated with the air chamber 15; when the sliding shaft moves downwards, the air chamber 11 is communicated with the air chamber 15, and the air chamber 12 is communicated with the air chamber 14.

The channels in this embodiment may also be: the sliding shaft is provided with a through hole which can be connected with the air chamber groups at the two sides; it can also be: a plurality of steps are arranged at intervals on the periphery of the sliding shaft, a channel is formed between every two adjacent steps (the scheme is similar to the scheme of arranging a sealing ring), and the steps and the sliding shaft are integrally formed.

As shown in fig. 9-10, the sliding shaft is connected with a floating part 17, the floating part is arranged on the liquid level, and the floating part floats up and down along with the liquid level change of the liquid level to drive the sliding shaft to reciprocate back and forth; the float is preferably submerged in the liquid level 1/4-1/3.

The floating piece can be a floating ball, the material can be stainless steel or a plastic hollow or solid sphere, and the floating piece is lighter than water, but the floating weight of the floating ball cannot be too light, the floating piece can vibrate greatly along with the fluctuation of the liquid level, and the floating ball cannot be too heavy, so that the change of the actual water level in the vacuum well cannot be truly reflected; therefore, in the design, a balancing weight 171 (or sand and water are filled in the hollow floating ball) can be additionally arranged on a fixed point of the top end of the floating ball and the transmission rod to increase the stability of the floating ball so as to adjust the draft depth and the water level change height of the floating ball, so that the floating ball can drive the transmission rod to move upwards and downwards together when the liquid level in the vacuum well rises and falls, and the high-low position limit point touches the shifting lever to generate the switching action of the air chamber in the mechanical controller.

In this embodiment, the specific structure for driving the sliding shaft to reciprocate back and forth may be: the sliding shaft is directly connected with the floating piece, and the floating piece directly drives the sliding shaft to reciprocate back and forth.

In this embodiment, the specific structure for driving the sliding shaft to reciprocate back and forth may also be: the sliding shaft passes through drive assembly with the floating piece is connected, drive assembly includes the fixed cover 18 and the transfer line 19 of cup jointing inside and outside (adopt coaxial fixed cover and the transfer line of cup jointing inside and outside, can keep the transfer line to reciprocate perpendicularly all the time, can not squint), fixed cover with mechanical type controller fixed connection, the lower extreme fixed connection floating piece of transfer line just the transfer line with the floating piece synchronous motion, the upper end of transfer line is through the sliding shaft of driving lever 110 connection converter, the driving lever is stirred the sliding shaft and is made reciprocating motion back and forth.

The center of the driving lever is rotationally connected with the converter, the transmission rod is provided with high and low position limit points (191,192), one end of the driving lever is movably lapped between the high and low position limit points of the transmission rod, and the high and low position limit points of the transmission rod (the high and low position limit points can adopt the mode that a blind slot is formed on the wall of the transmission rod or a bulge is arranged on the wall of the transmission rod at the high and low positions or a through hole is formed on the wall of the transmission rod) respectively touch one end of the driving lever in turn so as to drive the other end of the driving lever to drive the sliding shaft to reciprocate.

The shifting lever is rotatably connected below the air chamber group (when the air chamber group is horizontally placed, the shifting lever is rotatably connected to the right or left side), the shifting lever and the air chamber group are rotatably connected by using a fixed fulcrum 112, the fixed fulcrum is positioned at the middle section of the whole shifting lever and is designed into a torque type, and two ends of the shifting lever move in opposite directions and move, so that the force path of external transmission of force at the end of the shifting lever can be simply amplified and reduced; one end of the deflector rod bears the upper and lower mechanical pressure of the future ascending and descending of the floating ball, and the other end of the deflector rod is movably clamped with the sliding shaft of the air chamber group, and can vertically touch the upper edge of the movable clamping tenon to push the sliding shaft to move upwards; the sliding shaft can also be pushed downwards to pull the sliding shaft to move downwards by touching the lower edge of the movable clamping tenon.

The other end of the deflector rod is downwards moved instead, and the sliding shaft is pressed to downwards move, so that the air chamber 11 is communicated with the air chamber 15 and the

air chambers

12 and 14 are communicated because the sliding shaft downwards moves; conversely, pressing down the lever causes the other lever to tilt up, and the slide shaft to move upward, so that the

air chambers

11 and 14 and the

air chambers

13 and 15 are communicated with each other as the slide shaft moves upward.

The material of the body of the converter can be metal, alloy, stainless steel or plastic material.

The transmission rod can be made of stainless steel, metal, alloy or plastic.

As shown in fig. 13-14, two vacuum valves (2, 2)^’) The valve comprises an upper shell 21, a lower shell 22, a spring 23, a valve plate assembly 24 and an elastic diaphragm 25, wherein the elastic diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed by the elastic diaphragm and are not ventilated; the spring (the spring can be cylindrical or conical) is arranged in the upper shell and is connected with the elastic diaphragm, and the elastic diaphragm can extrude the spring when being deformed under the action of air pressure to move towards the upper shell and can recover the deformation under the resilience force of the spring; the valve plate assembly is arranged in the lower shell and connected with the elastic diaphragm, and the elastic diaphragm can drive the valve plate assembly to move synchronously when deformed under the action of air pressure to generate displacement so as to realize the opening and closing of the vacuum diaphragm valve. The valve plate assembly 24 comprises a traction shaft 241 and a valve plate 242, one end of the traction shaft is connected with the elastic diaphragm, the other end of the traction shaft is connected with the valve plate, and the traction shaft drives the valve plate to move along with the deformation displacement of the elastic diaphragm.

The elastic diaphragm and the upper shell form a sealed upper air pressure cavity, the elastic diaphragm, the lower shell and the middle part of the traction shaft form a sealed lower air pressure cavity, the upper shell is provided with an air vent 126 communicated with the upper air pressure cavity, and the lower shell is provided with an air vent 126' communicated with the lower air pressure cavity. When the vent 1 of the upper air pressure cavity is communicated with negative pressure and the vent of the lower air pressure cavity is communicated with atmospheric pressure, the elastic diaphragm generates deformation displacement towards the direction of the upper shell, at the moment, the elastic diaphragm presses the spring in the upper shell and drives the valve plate assembly to move towards the direction of the upper shell, the vacuum diaphragm valve is gradually opened to full opening, and water flow in the pipe section flows; when the vent hole of the upper air pressure cavity is communicated with the atmospheric pressure and the vent hole of the lower air pressure cavity is communicated with the negative pressure, the elastic diaphragm is deformed and restored, the valve plate assembly is jointly pushed under the acting force of the spring to move towards the lower shell to abut against the valve body closing opening in the pipe section, the valve plate is in sealing fit with the valve body closing opening, the vacuum diaphragm valve is closed, and water flow in the pipe section is cut off. The upper part and the lower part of the elastic diaphragm generate pressure difference due to the entrance of vacuum negative pressure suction and atmospheric pressure, so that the elastic diaphragm can make up-and-down huge deformation and sliding movement, and the deformation and sliding movement distance of the elastic diaphragm usually represents the stroke distance of opening and closing the lower shaft connection valve plate.

The lower shell is provided with a water inlet 271 connected with the vacuum negative pressure well and a water outlet 272 connected with a vacuum collection pipe section for discharging sewage. The water inlet and the water outlet are respectively arranged at two ends of the pipe section 7, the lower shell is integrally connected with the pipe section, a valve body closing port 29 is arranged in the pipe section, and when the valve plate is tightly abutted against the valve body closing port, the vacuum diaphragm valve is closed.

An included angle is formed between the stroke direction of the traction shaft and the water flow direction and is 30-75 degrees.

The periphery of the middle part of the traction shaft is provided with a rubber ring 2411, and the rubber ring on the periphery of the traction shaft is tightly attached to the inner wall of the lower shell to keep air tightness.

The valve plate is designed into a flat plate shape, a hammer-like shape, a conical shape or a water drop shape, so that a gap is not easy to generate between the valve plate and the outer shell of the valve plate when the valve plate is opened, and foreign matter clamping seams are not easy to generate, so that the problem that the valve body is clamped and cannot actuate is caused.

The valve plate is designed to be integrally wrapped with rubber or designed with an annular rubber ring in a contact area, so that the shut-off valve plate can be fully jointed with the valve body closing opening, the vacuum attraction of the valve body closing opening cannot leak, the pressure relief problem is caused, and the pipe section can be fully sealed.

In this embodiment, the upper casing and the lower casing of the vacuum diaphragm valve can be made of stainless steel, metal, alloy or various plastics (PVC, PE, PP, fiberglass, PA, etc.).

In this embodiment, since the deformation displacement of the elastic diaphragm often represents the stroke distance of opening and closing the lower valve plate assembly, the elastic diaphragm must have high sealing performance, large displacement variation, and resistance to pulling and squeezing and damage, so the elastic diaphragm is made of a pressure-resistant deformable plastic material such as modified rubber, teflon, or a silicone sheet.

In this embodiment, the connection between the pipeline and the pipeline, the connection between the upper casing and the lower casing, and the like are performed in a plurality of manners such as flange connection, tooth mouth connection by arbitrary connection or pipe clamp connection.

Since a longer actuation stroke allows the valve plate to open more and more completely, and the occurrence of the long actuation stroke is completely limited by the deformation amount of the elastic diaphragm connected with the valve plate assembly, a high-elasticity and high-deformation plastic rubber diaphragm is necessary.

As shown in fig. 1, 7, and 8: two groups of water pumping mechanisms are arranged in the vacuum negative pressure well, each group of water pumping mechanism respectively comprises a vacuum valve and a water pumping pipe section, the vacuum valve is arranged on the water pumping pipe section, and the vacuum valves (2, 2) on the two groups of water pumping mechanisms^’) The upper air pressure chamber communicating air port 126 of the upper air pressure chamber is connected to the air chamber 15 of the mechanical controller 1, and the communicating air port 126 of the lower air pressure chamber^’Are connected with an air chamber 14, and the air chamber 11 is connected with a continuous vacuum negative pressure suction source in a vacuum dry pipe at the outlet end of a vacuum negative pressure valve.

And the water outlet ends of all the water pumping mechanisms are respectively connected with the vacuum main pipe section.

The working principle or working process of the embodiment is as follows:

the closing action of the vacuum valve is that the air chamber 11 of the mechanical controller is communicated with the vacuum gas path of the air chamber 14, meanwhile, the air chamber 13 is communicated with the air chamber 15 to form an atmospheric gas path, and the path of the air chamber 12 is closed and does not do any work; at this time, the air chamber 11 is connected to vacuumThe valve outlet end vacuum main pipe and the air chamber 14 are simultaneously connected with two groups of vacuum valves (2, 2) connected in parallel^’) The lower air pressure cavity is used for forming negative pressure; the air chamber 13 and the air chamber 15 are communicated with the atmosphere in the vacuum well, which also means that the air chamber 15 is simultaneously connected with two groups of vacuum valves (2, 2) connected in parallel^’) The upper air pressure cavity is in an atmosphere communication state, so that the pressure of the upper air pressure cavity of the elastic diaphragm of the vacuum valve is strong, the vacuum negative pressure of the lower air pressure cavity is weak, a downward pushing force difference is generated, the elastic diaphragm of the vacuum valve can be tightly pushed down to move under the combined action of the spring rebound pressure in the upper air pressure cavity, the vacuum valve plate is closed, and the two vacuum valves are closed simultaneously.

Opening of the vacuum valve: the air chamber 11 and the air chamber 15 of the mechanical controller can generate air path conduction, meanwhile, the air chamber 12 and the air chamber 14 can also form air path conduction, and the air chamber 13 path is closed and does not do any work; at the moment, the air chamber 11 is connected with the vacuum main pipe at the outlet end of the vacuum valve, and the air chamber 15 is simultaneously connected with two vacuum valves (2, 2) connected with the same pipe section in parallel^’) The upper air pressure cavity is used for gradually converting atmospheric pressure in the original upper air pressure cavity into a vacuum negative pressure state due to the introduction of vacuum gas, and the upper air pressure cavity forms negative pressure; the air chamber 12 and the air chamber 14 are communicated and communicated with the atmosphere in the vacuum well, which means that the air chamber 14 is simultaneously connected with two groups of vacuum valves (2, 2) which are connected in parallel with the same pipe^’) The lower air pressure cavity is in an atmospheric pressure state formed by the original vacuum negative pressure state, so that the vacuum suction force of the upper air pressure cavity of the elastic diaphragm of the vacuum valve and the upward thrust generated by the atmospheric positive pressure in the lower air pressure cavity move the elastic diaphragm to move upwards, the valve plate at the bottom in the vacuum valve can be pulled to open the vacuum valve upwards, the vacuum suction forces in the water absorbing pipe sections at the front end and the rear end of the vacuum valve are conducted to suck the water accumulated in the vacuum well, and the two vacuum valves are opened simultaneously.

Example 2: a multi-valve type vacuum negative pressure well structure is basically the same as the embodiment 1, and the difference is that: the vacuum negative pressure well is internally provided with 1 water storage tank, the water storage tank is internally provided with at least two groups of water pumping mechanisms which are connected in parallel, and the single group of water pumping mechanisms are respectively and correspondingly controlled by an independent opening and closing controller.

Both the embodiment 1 and the embodiment 2 can realize the simultaneous operation of the vacuum valves connected in parallel, and since the two vacuum valves in the embodiment 1 are simultaneously controlled by the mechanical controller, that is, the mechanical controller controls the two sets of vacuum valves connected in parallel to operate simultaneously, compared with the embodiment 2, the embodiment 1 can better realize the synchronization of the operation of the two sets of vacuum valves, that is, the two sets of vacuum valves arranged in parallel in front and behind can simultaneously sense the air switching information of the mechanical controller set driven by the water level in the well.

Example 3: a multi-valve type vacuum negative pressure well structure is basically the same as the embodiment 1, and the difference is that: the vacuum negative pressure well is internally provided with a plurality of water storage tanks, each water storage tank is internally provided with at least one group of water pumping mechanisms, the total quantity of the water pumping mechanisms in the vacuum negative pressure well is more than or equal to that of the water storage tanks, and all the water pumping mechanisms in each water storage tank share one group of opening and closing controllers to uniformly control the opening and closing of the water pumping mechanisms to stop water pumping.

Example 4: a multi-valve type vacuum negative pressure well structure is basically the same as the embodiment 3, and the difference is that: the vacuum negative pressure well is internally provided with a plurality of water storage tanks, each water storage tank is internally provided with at least one group of water pumping mechanisms, the total quantity of the water pumping mechanisms in the vacuum negative pressure well is more than or equal to that of the water storage tanks, and all the water pumping mechanisms in each water storage tank are respectively and independently controlled to be opened and closed by independent opening and closing controllers.

In the present embodiment, two water storage tanks are taken as an example, see fig. 4-6.

Both the embodiment 3 and the embodiment 4 can realize the simultaneous operation of the vacuum valves connected in parallel, and since the two vacuum valves in the embodiment 3 are simultaneously controlled by the mechanical controller, that is, the mechanical controller controls the two sets of vacuum valves connected in parallel to operate simultaneously, compared with the embodiment 4, the embodiment 3 can better realize the synchronization of the operation of the two sets of vacuum valves, that is, the two sets of vacuum valves arranged in parallel in front and behind can simultaneously sense the air switching information of the mechanical controller set driven by the water level in the well.

In the embodiments 1 to 4, for the vacuum negative pressure well, besides the parallel operation of the pumping mechanism, the start-stop controller also has a double parallel or multiple parallel safety mechanism.

In the embodiment 1-4, the number of the water pumping mechanisms can be flexibly adjusted according to the requirement of the water discharge quantity of the water discharge points.

In the multi-valve vacuum negative pressure well structure described in embodiments 1 to 4, a spare reservoir may be provided in the vacuum negative pressure well, and 1 or more sets of pumping mechanisms may be provided in the spare reservoir.

The water pumping mechanisms in the standby water storage tank share one mechanical controller or all the water pumping mechanisms are independently controlled by independent mechanical controllers respectively.

The standby water storage tank mainly aims at the vacuum negative pressure well of the mechanical controller shared by all vacuum valves in only 1 water storage tank in embodiment 1, so that the condition that all the vacuum valves in the whole vacuum well cannot operate due to the fact that the vacuum valves in a group of water storage tanks are failed is avoided, and the operation efficiency of equipment is improved.

In the multi-valve vacuum negative pressure well structure described in embodiments 1 to 4, a liquid level detector is further provided in the vacuum negative pressure well.

In the multi-valve vacuum negative pressure well structure described in embodiments 1 to 4, the mechanical controller for controlling the opening and closing of the vacuum valve may be replaced by a commercially available electromagnetic controller, and the mechanical controller and the electromagnetic controller are not limited to those described herein, and may be other controllers having a function of controlling the opening and closing of the vacuum valve, such as a pneumatic micro-controller.

In the multi-valve type vacuum negative pressure well structure described in embodiments 1 to 4, the vacuum valve may be a commercially available vacuum negative pressure valve.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the specification and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. The utility model provides a many valve type vacuum negative-pressure well structure which characterized in that: the vacuum negative pressure well is internally provided with at least two groups of parallel water pumping mechanisms, each water pumping mechanism comprises a vacuum valve and a water pumping pipe, the vacuum valves are installed on the water pumping pipes, and the vacuum valves are connected with opening and closing controllers for controlling the opening and closing of the vacuum valves.

2. The multi-valve vacuum negative pressure well structure of claim 1, wherein 1 water storage tank is arranged in the vacuum negative pressure well, and at least 2 groups of water pumping mechanisms are arranged in the water storage tank;

3. The multi-valve vacuum negative pressure well structure of claim 2, wherein each reservoir is controlled by a single on-off controller;

4. The multi-valve vacuum negative-pressure well structure as claimed in claim 1, wherein the open/close controller is an electromagnetic controller or a mechanical controller.

5. The multi-valve vacuum negative-pressure well structure of claim 4, wherein the mechanical controller comprises a sliding shaft and air chamber groups arranged at two sides of the sliding shaft, the sliding shaft is provided with a channel capable of connecting the air chamber groups at two sides, and the sliding shaft can reciprocate along the axial direction of the sliding shaft to realize switching conduction of the air chamber groups at two sides of the sliding shaft.

6. The structure of the multi-valve vacuum negative-pressure well according to claim 5, wherein the sliding shaft is provided with a plurality of sealing rings at the periphery thereof, and the passage is formed between two adjacent sealing rings.

7. The multi-valve vacuum negative-pressure well structure as claimed in claim 5, wherein the sliding shaft is connected with a floating member, and the floating member floats up and down along with the liquid level change of the liquid level so as to drive the sliding shaft to reciprocate back and forth.

8. The multi-valve vacuum negative-pressure well structure according to claim 7, wherein the sliding shaft is connected with the floating part through a transmission assembly, the transmission assembly comprises a fixed sleeve and a transmission rod which are sleeved inside and outside, the fixed sleeve is fixedly connected with the mechanical controller, the lower end of the transmission rod is fixedly connected with the floating part, the transmission rod and the floating part move synchronously, the upper end of the transmission rod is connected with the sliding shaft of the converter through a shifting rod, and the shifting rod shifts the sliding shaft to reciprocate back and forth;

the center of the shifting rod is rotationally connected with the converter, the transmission rod is provided with a high-low limiting point, and the high-low limiting point and the low-high limiting point of the transmission rod respectively touch one end of the shifting rod to drive the other end of the shifting rod to drive the sliding shaft to reciprocate.

9. The structure of the multi-valve vacuum negative-pressure well according to claim 5, wherein the number of the air chambers on one side of the sliding shaft is one less than that on the other side of the sliding shaft, and the air chambers on the two sides are arranged in a staggered manner;

10. The multi-valve vacuum negative-pressure well structure according to claim 1, wherein the vacuum valve comprises an upper shell, a lower shell, a spring, a valve plate assembly and an elastic diaphragm, the elastic diaphragm is clamped between the upper shell and the lower shell, and the upper shell and the lower shell are sealed by the elastic diaphragm and do not ventilate with each other;