CN215928565U - Vacuum valve anti-blocking mounting structure in vacuum negative pressure well - Google Patents

Abstract

The utility model discloses an anti-blocking mounting structure for a vacuum valve in a vacuum negative pressure well. The utility model provides an anti-blocking mounting structure for a vacuum valve in a vacuum negative pressure well, which solves the problems that the vacuum valve body of the vacuum negative pressure sewage collection system is in fault, and the vacuum valve cannot be normally closed due to the blockage of a valve caused by foreign matters, so that the pressure of the whole vacuum system pipeline is lost or even the drainage function is lost.

Description

Vacuum valve anti-blocking mounting structure in vacuum negative pressure well

Technical Field

The utility model belongs to the technical field of water treatment devices, and particularly relates to an anti-blocking mounting structure for a vacuum valve in a vacuum negative pressure well.

Background

The vacuum valve in the vacuum negative pressure well is the only passage and opening and closing mechanism for pumping sewage in the well into the vacuum system, but in the process of operating the vacuum valve, dirt is always lost in the sewage and drainage system due to bad living habits of residents, various foreign matters such as toilet paper, sanitary towels or safety sleeves and other foreign matters discharged by toilets, kitchen cleaning vegetable roots, residual dishes or kitchen grease and other vegetable residues are gathered and discharged into the vacuum drainage collection system, under the condition, a vacuum valve body in the vacuum well positioned at the forefront end of the vacuum system is blocked and blocked, even a sealing valve plate cannot be closed, so that vacuum suction force is continuously released by a vacuum pipe section, air is continuously supplemented into a vacuum main pipe, a low vacuum degree or positive air pressure state is generated by vacuum of the vacuum drainage system, all vacuum valves in the vacuum well in the full vacuum system cannot be normally opened and closed, and normal pumping and water stop of the system cannot be provided, i.e. so-called loss of voltage failure, which is a considerable hazard to the system

In order to solve the problems, a system designer often adopts a front sewage interception mode to reduce the quantity and the size of the sewage entering a vacuum drainage system, the design must force that a solid-liquid separation septic tank is arranged at an outlet pipe of a toilet and a bathroom of a household, a sewage blocking and oil removing grid groove is arranged at an outdoor position of a kitchen drain pipe to reduce the size and the quantity of the sewage of the drainage as much as possible, and experience shows that when the household does not clean a slag groove and a septic tank in a legal period, the sewage can overflow into the drainage system to cause the risk of fault and blockage, but it is difficult to regularly clean the septic tanks and the slag tanks of the households in order for all the system households, and the cleaning problem is more serious even when the slag removal tank and the septic tank are arranged in every two households or three households, therefore, the design of the front trash blocking equipment actually costs the initial cost, and the long-term stability cannot be achieved due to the maintenance problem in the later use period. Those skilled in the art must reduce fouling and failure of vacuum valves in the customer vacuum well in view of enhancing the stability and reliability of the vacuum drainage system.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing an anti-blocking mounting structure for a vacuum valve in a vacuum negative pressure well, and solves the problems that the vacuum valve body of the vacuum well of a vacuum negative pressure sewage collection system is in failure, and the vacuum valve cannot be normally closed due to the blockage of a valve caused by foreign matters, so that the pipe section of the whole vacuum system is in decompression or even the drainage function is lost.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a vacuum valve prevents stifled mounting structure in vacuum negative pressure well, the pumping pipe section of vacuum valve installation in vacuum negative pressure well, pumping pipe section is established ties in proper order has two at least vacuum valves, the vacuum valve is connected with the start and stop controller that can control the vacuum valve and open and close, start and stop controller control opening and closing of vacuum valve.

Further, the vacuum valve is connected in series with the pumping pipe section in a specific structure of horizontal series installation or vertical reverse series installation.

Furthermore, all the vacuum valves are controlled by the same opening and closing controller or controlled by different opening and closing controllers independently.

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.

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 is sleeved inside and outside the transmission assembly, the fixed sleeve is fixedly connected with a shell of 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.

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.

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 vacuum valves to operate in series simultaneously, and the vacuum valve installation mode can adopt the horizontal series installation (figure 3) of the vacuum valves or the vertical reverse series installation (figure 4) of the vacuum valves according to the size of the vacuum well; therefore, when the first vacuum valve is preferentially blocked by foreign matters or the internal components of the vacuum valve are failed, the second vacuum valve connected in series behind the first vacuum valve can continue to normally open and close due to the fact that no impurities are blocked by dirt and the normal valve is in a normal state, and the vacuum negative pressure of the vacuum main pipeline behind the vacuum valve 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 pumping 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, at the moment, the valve plate vertical to the traction shaft can be in close contact with a valve body closing opening in a 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 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 view showing a construction of a vacuum valve according to the present invention in an open state;

FIG. 2 is a view showing a construction of the vacuum valve of the present invention in a closed state;

FIG. 3 is a schematic view of the structure of the present invention I (horizontal tandem installation);

FIG. 4 is a second schematic view of the present invention (vertical reverse series installation);

FIG. 5 is a first structural view (liquid level down, slide shaft up) of the mechanical controller of the present invention;

FIG. 6 is a second schematic structural view of the mechanical controller according to the present invention (liquid level up, slide shaft down);

FIG. 7 is a first schematic view (sliding shaft moving upwards) of the air chamber assembly of the present invention;

FIG. 8 is a second schematic structural view of the air chamber assembly of the present invention (sliding shaft moving downward);

FIG. 9 is a first schematic structural view (valve body open state) of the vacuum valve of the present invention;

FIG. 10 is a second schematic structural view of the vacuum valve of the present invention (valve body closed state);

the parts in the drawings are marked as follows:

converter 1, one side air chamber (14,15), the other side air chamber (11,12,13), sliding shaft 16, floating piece 17, balancing weight 171, fixed sleeve 18, transmission rod 19, high-position limit point 191, low-position limit point 192, deflector rod 110, sealing ring 111, fixed fulcrum 112, two vacuum valves (2, 2) connected in series^’) The air compressor comprises an upper 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 pipe section 27, the water inlet 271, the water outlet 272 and the valve body closing opening 29.

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: the utility model provides a vacuum valve prevents stifled mounting structure in vacuum negative pressure well, the pumping pipe section of vacuum valve installation in vacuum negative pressure well, pumping pipe section establishes ties in proper order has two at least vacuum valves, all the vacuum valve all connects in same opening and close controller, the controller of opening and close controller for can controlling the vacuum valve and open and close, opening and close controller control vacuum valve open and close.

The vacuum valve is connected in series with the pumping pipe section in a horizontal series mounting structure or a vertical reverse series mounting structure.

The opening and closing controller is an electromagnetic controller (adopting electromagnetic control), namely the existing controller capable of controlling the opening and closing of the vacuum valve on the market.

The vacuum valve is a conventional vacuum negative pressure valve on the market.

Example 2: the utility model provides a vacuum valve prevents stifled mounting structure in vacuum negative pressure well, is the same basically with embodiment 1, the difference lies in: all the vacuum valves are independently controlled by different opening and closing controllers respectively.

Both the embodiment 1 and the embodiment 2 can realize the simultaneous action of the vacuum valves connected in series, and because the two vacuum valves in the embodiment 1 are simultaneously controlled by the group of opening and closing controllers in a linkage manner, that is, the group of opening and closing controllers simultaneously control the operation of the two groups of vacuum valves connected in series, compared with the embodiment 2, the embodiment 1 can better realize the action synchronization of the two groups of vacuum valves.

Example 3: an anti-blocking mounting structure for a vacuum valve in a vacuum negative pressure well is disclosed, as shown in fig. 1-4, the vacuum valve is mounted on a pumping pipe section in the vacuum negative pressure well, the pumping pipe section is sequentially connected in series with at least two vacuum valves, in this embodiment, two vacuum valves, namely two vacuum valves (2, 2) connected in series are used^’) The two vacuum valves are connected to the same opening and closing controller, the opening and closing controller is capable of controlling the opening and closing of the vacuum valves, and the opening and closing controller controls the opening and closing of the vacuum valves.

As shown in fig. 5 to 8, the mechanical controller 1 includes a sliding shaft 16 and air chamber groups disposed on two sides of the sliding shaft, the sliding shaft has a passage capable of connecting the air chamber groups on two sides, and the sliding shaft can reciprocate along an axial direction of the sliding shaft to realize switching conduction of the air chamber groups on two 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 chambers 1 of the vacuum valve, and the other side is provided with at least 3 air chambers which are positioned in the middle and are 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. 7-8, 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. 5-6, 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 deflector rod is rotatably connected below the air chamber group (when the air chamber group is horizontally placed, the deflector rod is rotatably connected to the right side or the left side), the deflector rod and the air chamber group are used as a rotating connection point by a fixed fulcrum 112, the fixed fulcrum is positioned at the middle section of the whole deflector rod and is designed into a force moment type, and two ends of the deflector rod adopt opposite movement directions and movements, so that the force path of external transmission of force at the end of the deflector rod 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 moved downwards instead of being pulled upwards, the sliding shaft is pressed to move downwards, and the air chamber 11 and the air chamber 15 are communicated and the air chambers 12 and 14 are communicated because the sliding shaft moves downwards; 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. 9-10, two vacuum valves (2, 2)^’) The valve plate assembly 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 communicated with each other; 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.

Elastic diaphragm and last casing form sealed last pneumatic chamber, and elastic diaphragm, lower casing and traction shaft middle part form sealed lower pneumatic chamber, go up the casing and be equipped with the blow vent in pneumatic chamber in the intercommunication, the casing is equipped with the blow vent in pneumatic chamber down in the intercommunication. When the ventilation chamber 1 of the upper air pressure cavity is communicated with negative pressure and the vent hole 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 and jointly pushes the valve plate component to move towards the lower shell direction to tightly abut against the valve closing opening in the pipe section under the acting force of the spring, the valve plate is in sealing fit with the valve 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 for opening and closing the lower valve plate assembly, the elastic diaphragm must be designed to have various characteristics such as high sealing performance, large displacement variation, and resistance to pulling and squeezing and damage, and therefore, the elastic diaphragm is mostly made of a pressure-resistant deformable plastic material such as modified rubber, teflon, or 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-as shown in fig. 2: two vacuum valves (2, 2) connected in series on the pumping pipe section^’) The upper pressure chamber communicating air chamber 126 is connected to the air chamber 15 of the mechanical controller 1, and the lower pressure chamber communicating air chamber 126^’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.

The vacuum valve is connected in series with the pumping pipe section in a horizontal series connection mode (shown in figure 3) or in a vertical reverse series connection mode (shown in figure 4).

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 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 14 is simultaneously connected with two groups of vacuum valves (2, 2) which are connected in series^’) 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 represents two sets of vacuum valves (2, 2) connected in series and connected with the air chamber 15 at the same time^’) 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 series^’) The upper pressure chamber is used for gradually converting the atmospheric pressure in the original upper pressure chamber due to the introduction of vacuum gasThe vacuum negative pressure state is formed, and the upper air pressure cavity forms negative pressure; the air chamber 12 and the air chamber 14 are communicated with the atmosphere in the vacuum well, which means that the air chamber 14 is simultaneously connected with two sets of vacuum valves (2, 2) connected in series 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 bottom valve plate in the vacuum valve can be pulled to open the vacuum valve upwards, the vacuum suction forces in the water pumping pipe sections at the front end and the rear end of the vacuum valve are conducted to pump the water accumulated in the vacuum well, and the two vacuum valves are opened simultaneously.

Example 4: the utility model provides a vacuum valve prevents stifled mounting structure in vacuum negative pressure well, concrete structure is the same basically with embodiment 1, the difference lies in: all the vacuum valves are respectively and correspondingly connected with different opening and closing controllers which are independently controlled, and the opening and closing controllers respectively and correspondingly control the action of the vacuum valves respectively connected with the opening and closing controllers.

Both the embodiment 3 and the embodiment 4 can realize the simultaneous operation of the vacuum valves connected in series, and since the two vacuum valves in the embodiment 1 are simultaneously controlled by the linked action of the one set of on-off controller, that is, the one set of on-off controller simultaneously controls the operation of the two sets of vacuum valves connected in series, 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 connected in series in front and behind can simultaneously sense the air switching information of the on-off controller driven by the water level in the well.

The opening and closing controller in embodiments 1 to 4 can control the operation of the vacuum valve in the present invention, and besides the electromagnetic controller and the mechanical controller used in the above embodiments, other controllers capable of controlling the opening and closing of the vacuum valve, such as a gas micro-pressure controller, may be used.

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 (10)

1. The utility model provides a vacuum valve prevents stifled mounting structure in vacuum negative pressure well, the pipeline that draws water in vacuum negative pressure well is installed to the vacuum valve, its characterized in that: the water pumping pipeline is sequentially connected with at least two vacuum valves in series, the vacuum valves are connected with an opening and closing controller capable of controlling the opening and closing of the vacuum valves, and the opening and closing controller controls the opening and closing of the vacuum valves.

2. The anti-blocking mounting structure of the vacuum valve in the vacuum negative pressure well is characterized in that the specific structure of the vacuum valve connected in series with the water pumping pipeline is a horizontal series mounting structure or a vertical reverse series mounting structure.

3. The anti-blocking mounting structure for the vacuum valve in the vacuum negative pressure well is characterized in that all the vacuum valves are controlled by the same opening and closing controller or controlled by different opening and closing controllers independently.

4. The anti-blocking mounting structure of the vacuum valve in the vacuum negative pressure well is characterized in that the opening and closing controller is an electromagnetic controller or a mechanical controller.

5. The anti-blocking mounting structure of the vacuum valve in the vacuum negative pressure well is characterized in that 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 connecting 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.

6. The anti-blocking mounting structure for the vacuum valve in the vacuum negative pressure well is characterized in that the sliding shaft is connected with a floating part, and the floating part 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.

7. The anti-blocking mounting structure for the vacuum valve in the vacuum negative pressure well 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 which are sleeved inside and outside, the fixed sleeve is fixedly connected with a shell of 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.

8. The anti-blocking mounting structure of the vacuum valve in the vacuum negative pressure well is characterized in that 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.

9. The anti-blocking mounting structure for the vacuum valve in the vacuum negative pressure well is characterized in that 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.

10. The anti-blocking mounting structure of the vacuum valve in the vacuum negative pressure well is characterized in that 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 ventilated;

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.

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