Novel vacuum valve with monitoring function and vacuum drainage system

Abstract

The utility model relates to the technical field of pneumatic control valves, in particular to a novel vacuum valve with a monitoring function, which comprises a valve body, a valve plate, a valve plate seat and a valve port are arranged in the valve body, the valve plate seat is arranged in the middle of the valve body, the valve port is arranged on the lower portion of the valve body, and the tail end of the valve plate penetrates through the valve plate seat and is positioned between the valve plate seat and the valve port. The valve body is provided with a monitoring port, the monitoring port is arranged between the valve plate seat and the valve port, and the monitoring port is connected with an external sensor. The utility model provides a novel vacuum valve with a monitoring function, which has counting and detecting functions, is convenient for working personnel to effectively find a fault target object and immediately eliminate problems at the first time, and ensures the normal operation of a vacuum water treatment system.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic control valve technical field especially is related to a novel vacuum valve and vacuum drainage system with monitoring function. BACKGROUND

[0002] In solving the vacuum negative pressure collection sewage system each branch pipeline sewage collection vacuum valve operating condition and make real-time transmission, benefit in central control room or vacuum station operator can immediately carry out on-site problem finding and elimination, have optimization and intelligent system design vacuum negative pressure sewage collection system composition is by a vacuum station, several, dozens, hundreds of vacuum sewage collection well and link transmission pipeline three parts jointly constitute.

[0003] In actual operation, each vacuum valve will be blocked by large debris or stone and other foreign matters (more than 50mm) in the sewage drainage system, causing the vacuum valve to be stuck and unable to close normally. At this time, in addition to affecting the normal sewage pumping of the vacuum, it also causes the negative pressure of the system vacuum pipeline to continuously leak. When too many valve bodies are stuck at the same time, the entire negative pressure pipeline may not be able to pump water and lose pressure. Therefore, it is a great challenge and pain point for the system maintenance personnel in the vast collection of sewage areas to effectively find fault objects and immediately eliminate problems in the first time.

[0004] To solve the above technical problems, the method commonly used by technical personnel is to install a magnetic reed switch on the vacuum valve, i.e. to install a magnet on the rotor inside the vacuum valve and to install a magnetic detector outside the vacuum valve. The detector disconnects the signal when the vacuum valve is opened and generates a signal connection when it is closed, thereby using the signal disconnection and reconnection changes as the number of vacuum valve opening times. When the vacuum valve is stuck by large foreign matter in the sewage and cannot close normally, the magnetic reed switch will be in a disconnected state. This continuous disconnection state can determine that the vacuum valve body is stuck and cannot close. However, this type of magnetic reed switch has a detector installed outside the vacuum valve and located in the vacuum well, which is in a humid environment for a long time. The detector is prone to short circuit and misoperation, or the detector does not work when the vacuum valve is flooded, which affects the normal operation of the entire vacuum drainage system and causes great losses due to delayed drainage. Furthermore, the detector of the magnetic reed switch is installed in the vacuum well, which requires a waterproof shell outside to avoid false signals caused by humidity in the vacuum well, increasing the construction cost and difficulty to some extent. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a novel vacuum valve and vacuum drainage system with monitoring function, which has counting and detection functions, facilitates workers to effectively find fault objects and immediately eliminate problems in the first time, and ensures the normal operation of the vacuum water treatment system.

[0006] The utility model provides a novel vacuum valve with monitoring function, including the valve body, be equipped with valve plate, valve seat and valve mouth in the valve body, the valve seat is equipped in the middle part of valve body, and the valve mouth is equipped in the lower part of valve body, the tail end of valve plate passes through valve seat and is located between valve seat and valve mouth,

[0007] The valve body is provided with a monitoring port between the valve seat and the valve port.

[0008] Further, the valve body includes an upper housing and a lower housing, the upper housing and the lower housing are detachably connected, the valve seat and the valve port are both arranged in the lower housing, a driving assembly is arranged between the upper housing and the valve seat, the leading end of the valve plate is fixedly connected to the driving assembly, and the driving assembly drives the valve plate to move back and forth to move the tail end of the valve plate away from or close to the valve port, thereby achieving valve opening and valve closing.

[0009] Further, the upper housing is provided with a first gas interface for connecting a vacuum gas source to control the action of the driving assembly.

[0010] Further, the driving assembly includes a rubber diaphragm and a spring, the rubber diaphragm is clamped between the upper housing and the lower housing, so that the upper housing and the lower housing are sealed from each other by the rubber diaphragm, the rubber diaphragm is fixedly connected to the leading end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper housing.

[0011] The rubber diaphragm can drive the valve plate to move back and forth between the valve seat and the valve port when it deforms and recovers; and the rubber diaphragm can squeeze the spring when it deforms upwardly to the upper housing and recover under the action of the spring.

[0012] Further, the rubber diaphragm is fixedly connected to the valve plate through a tray, and the middle part of the tray is protruded upwardly to the upper housing.

[0013] Further, the driving assembly includes a driving disc and a spring, the driving disc is fixedly connected to the leading end of the valve plate, and the spring is arranged between the upper housing and the driving disc.

[0014] When the driving disc moves back and forth, it can drive the tail end of the valve plate to move back and forth between the valve seat and the valve port; and when the driving disc is displaced to the upper housing under force, it can squeeze the spring and move to the lower housing under the action of the spring.

[0015] Further, the inner side wall of the upper housing and the driving disc are sealingly connected through a sealing member.

[0016] Further, the upper shell is internally provided with a circular inner cylinder, the inner cylinder is sealedly connected with the upper shell through a sealing element, and an inner side wall of the inner cylinder is sealedly connected with the driving disc through a sealing element.

[0017] Further, a middle portion of an inner top wall of the upper shell is protruded towards the lower shell.

[0018] The utility model discloses still provide a kind of vacuum drainage system, including the vacuum valve of above-mentioned, the water inlet end of the vacuum valve is connected to sewage well by pipeline, and the water outlet end is connected vacuum station by pipeline.

[0019] The utility model has the advantages of:

[0020] The utility model discloses a monitoring function is realized by setting monitoring port and the air pressure value measured thereby: when the air pressure value at monitoring port is converted from water pressure value to vacuum negative pressure value and then to atmospheric pressure value once, the vacuum valve switch valve is indicated once, so that the vacuum valve switch valve counting can be realized;In addition, the vacuum negative pressure value that the vacuum valve opens valve once lasts is the time T0 that the vacuum valve opens valve once, when monitoring vacuum negative pressure value duration t is greater than T0, it indicates that the vacuum valve fails to close valve, and technician should immediately repair on site;When no vacuum negative pressure value is monitored, it indicates that the vacuum valve fails to open valve, and technician should also immediately repair on site;The vacuum valve in the embodiment has monitoring function, can realize switch valve counting, and timely reflect vacuum valve switch valve condition, monitor whether vacuum valve switch valve has exception, and guarantee that drainage system normally operates;

[0021] And compared with the mode that the magnetic spring switch is installed in prior art to detect vacuum valve opening counting, the utility model can connect vacuum valve from vacuum well outside through gas pipeline, and the change of air pressure value in vacuum valve can be detected outside vacuum well to monitor vacuum valve opening counting, avoid the case that vacuum valve counting function is inaccurate and cannot find fault problem in time and cause major loss due to the influence of environment in vacuum well, and the utility model has the advantages of simple construction technology and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure diagram of embodiment 1 of the utility model Figure One (Closed valve);

[0023] Figure 2 It is the structure diagram of embodiment 1 of the utility model Figure Two (Open valve);

[0024] Figure 3 It is the structure diagram of embodiment 2 of the utility model Figure One (Closed valve);

[0025] Figure 4is the structure schematic diagram of embodiment 2 of the utility model Figure Two (open valve);

[0026] Figure 5 is the structure schematic diagram of embodiment 3 of the utility model Figure One (close valve);

[0027] Figure 6 is the structure schematic diagram of embodiment 3 of the utility model Figure Two (open valve);

[0028] Figure 7 is the structure schematic diagram of embodiment 4 of the utility model Figure One ;

[0029] Figure 8 is the structure schematic diagram of embodiment 4 of the utility model Figure Two ;

[0030] Figure 9 is the structure schematic diagram of embodiment 4 of the utility model Figure Three ;

[0031] Figure 10 is the structure schematic diagram of embodiment 4 of the utility model Figure Four .

[0032] In the figure:

[0033] Valve body 1, drain pipe 2, upper shell 11, lower shell 12;

[0034] Valve plate A1, valve plate seat A2, valve port A3, rubber diaphragm A4, first spring A5;

[0035] First gas interface P1, second gas interface P2, monitoring port P3;

[0036] Driving disc B2, groove B21, first sealing ring B7, second spring B8, inner cylinder B9, second sealing ring B10. Specific embodiments

[0037] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0038] Embodiment 1:

[0039] As Figures 1-2As shown, a new vacuum valve with monitoring function, comprising a valve body 1, a valve plate A1, a valve plate seat A2 and a valve port A3 are arranged in the valve body, the valve plate seat is arranged in the middle of the valve body, the valve port is arranged in the lower part of the valve body, the tail end (valve head) of the valve plate passes through the valve plate seat and is located between the valve plate seat and the valve port; the valve body is provided with a monitoring port P3, which is arranged between the valve plate seat and the valve port, and the monitoring port is connected with an external sensor.

[0040] The vacuum valve is installed on the drain pipeline 2, the water inlet end of the vacuum valve is connected to the sewage well through the drain pipeline, and the water outlet end is connected to the vacuum station through the drain pipeline; when the valve is opened, the valve plate moves upward away from the valve port, the drain pipeline is completely conducted between the water inlet end and the water outlet end of the vacuum valve and the vacuum station, and the entire pipeline is filled with vacuum negative pressure suction force, the sewage in the sewage well flows to the vacuum station through the drain pipeline, the water inlet end and the water outlet end of the vacuum valve, the monitoring port of the vacuum valve is connected with the drain pipeline and the air pressure value in the drain pipeline is monitored to be negative pressure value; when the valve is closed, the valve plate moves downward to reach the valve port, the water inlet end and the water outlet end of the vacuum valve are not conducted, that is, the drain pipelines connected on both sides of the vacuum valve are not conducted, and the drain pipeline on the water inlet end side of the vacuum valve cannot be connected with the vacuum station, so that the sewage in the sewage well cannot be pumped, at this time, the monitoring port on the vacuum valve is connected with the drain pipeline on the water inlet end side and not connected with the drain pipeline on the water outlet end side, the air pressure value in the drain pipeline on the water inlet end side is atmospheric pressure value, so the air pressure value measured by the monitoring port is atmospheric pressure value, and when the sewage continuously flows into the sewage well and the water level does not reach the starting threshold of the vacuum valve, the air pressure value in the drain pipeline on the water inlet end side is equal to the water pressure value (the water pressure value changes with the rising of the water level), so the air pressure value measured by the monitoring port is equal to the water pressure value; therefore, when the air pressure value at the monitoring port changes from the water pressure value to the vacuum negative pressure value and then to the atmospheric pressure value once, it indicates that the vacuum valve is opened and closed once, so that the vacuum valve opening and closing counting can be realized; in addition, the duration of the vacuum negative pressure value when the vacuum valve is opened once is the time T0 of the vacuum valve when it is opened once (since the opening and closing of the vacuum valve is generally related to the depth of the well water, generally has fixed opening threshold and closing threshold, so the time T0 of the vacuum valve when it is opened once is a fixed value), when the duration t of the monitored vacuum negative pressure value is greater than T0, it indicates that the vacuum valve fails to close, and the technician should immediately go to the scene for maintenance; when no vacuum negative pressure value is monitored, it indicates that the vacuum valve fails to open, and the technician should also immediately go to the scene for maintenance; the vacuum valve in the embodiment has monitoring function, can realize opening and closing counting, and timely reflect the opening and closing situation of the vacuum valve, monitor whether the vacuum valve has abnormality, and ensure the normal operation of the drainage system. Furthermore, the utility model can connect the detection port P3 of the vacuum valve through the gas pipeline from the outside of the vacuum well, and the change of the air pressure value in the vacuum valve can be detected outside the vacuum well to monitor the vacuum valve opening counting, so that the inaccuracy of the vacuum valve counting function caused by the influence of the environment in the vacuum well and the failure to timely find fault problems to cause significant loss can be avoided.

[0041] Specifically, the valve body of the vacuum valve in the embodiment includes an upper shell 11 and a lower shell 12, the upper shell and the lower shell are detachably (for example, quick release, screw, etc.) connected, the upper shell is provided with a first gas interface P1 connected with a vacuum air source (which can be a vacuum station), the lower shell is provided with a second gas interface P2, a monitoring port P3 is arranged on the lower shell and below the second gas interface, a valve plate seat A2 and a valve port A3 are arranged on the lower shell, a driving assembly is arranged between the upper shell and the valve plate seat, and a leading end of the valve plate is fixedly connected to the driving assembly; when water needs to be drained, the first gas interface of the upper shell is connected with the vacuum air source, a vacuum suction force acts on the driving assembly, so that the driving assembly drives the valve plate to move upward and drives a trailing end of the valve plate to move away from the valve port, thereby realizing the opening of the valve.

[0042] Specifically, the driving assembly includes a rubber diaphragm A4 and a first spring A5, the rubber diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed from each other by the rubber diaphragm and cannot communicate with each other, the rubber diaphragm is fixedly connected to the leading end of the valve plate, and the first spring is arranged between the rubber diaphragm and the upper shell; when the first gas interface is connected with the vacuum and the second gas interface is connected with the atmospheric pressure, the rubber diaphragm is deformed, drives the valve plate to move towards the upper shell and press the first spring, at this time, the opening of the vacuum valve is realized; in the embodiment, the first spring is selected to have a sufficient free length and a sufficient compression amount, so that when the second gas interface and the first gas interface are connected with the atmospheric pressure, the gas pressures in the upper shell and the lower shell are the same, at this time, the compressed spring in the upper shell has no vacuum suction force, only the compression force of the spring acts on the rubber diaphragm, the huge spring compression force of the first spring will promote the rubber diaphragm to gradually restore the deformation under the action of the force of the first spring, the elastic force of the rubber diaphragm and the action force of the spring jointly drive the valve plate to move towards the valve port, thereby realizing the closing of the vacuum valve, and the spring is in a semi-compressed state when closed; in the embodiment, the selection of the first spring changes the original double-gas-chamber (the gas chambers above and below the rubber diaphragm) double-vacuum (the first and second gas interfaces are connected with the vacuum in turn) rotation suction into double-gas-chamber single-vacuum (only the first gas interface is connected with the vacuum, and the valve is opened) suction, which can realize that the embodiment also has the actuation of opening and closing the vacuum valve, but the overall vacuum gas supply measure can be reduced by half.

[0043] To realize the miniaturization of the vacuum valve, in the design, the middle part of the tray of the rubber diaphragm is protruded towards the upper shell, the valve plate seat is designed to match the shape of the tray and is complementary in space, the height of the upper shell is reduced, and thus the overall height of the valve body is reduced; in further optimization, the middle part of the inner top wall of the upper shell is protruded towards the lower shell, the top part of the upper shell is recessed in the middle part from the outside, the first gas interface is arranged at the center of the recessed part, the height of the upper shell can be further reduced, and thus the volume of the vacuum valve can be further reduced.

[0044] Embodiment 2:

[0045] As Figures 3-4 shown in FIG. 1, a new type of vacuum valve with monitoring function, which is basically the same as the structure of the embodiment 1, the difference is that the driving assembly includes a driving disc B2 and a second spring B8, the driving disc is fixedly connected with the head end of the valve plate A1, the tail end (valve head) of the valve plate is located between the valve plate seat A2 and the valve port A3, the second spring is arranged between the upper shell and the driving disc, when the driving disc moves back and forth, it can drive the tail end (valve head) of the valve plate to move back and forth between the valve plate seat and the valve port; the driving disc is arranged in the upper shell and can only move along the inner side wall of the upper shell in the upper shell.

[0046] In normal state, the driving disc is close to the valve plate seat, the valve head of the valve plate abuts against the valve port, and the valve is in closed state; the first gas interface P1 in the middle of the top wall of the upper shell, after the first gas interface is connected with the true gas, the driving disc moves upward under the action of vacuum suction, at the same time, it drives the valve plate to move from the valve port to the valve plate seat, and opens the valve.

[0047] In order to enable the driving disc to move under the action of vacuum suction, the inner side wall of the upper shell and the driving disc must be tightly connected, that is, the upper and lower parts of the driving disc in the upper shell are not in communication with each other, therefore, the outer peripheral wall of the driving disc is provided with a first sealing ring B7, when the driving disc moves upward, the driving disc extrudes the first sealing ring on the inner side wall of the upper shell; the sealing ring is generally made of rubber, and the micro deformation of rubber can improve the tightness of the contact point, so as to achieve the sealing effect. Considering the sealing effect, a plurality of first sealing rings can be arranged on the outer peripheral wall of the driving disc, and the plurality of first sealing rings are arranged at intervals along the length of the outer peripheral wall (the length is in the direction of displacement of the driving disc). In the embodiment, preferably, the first sealing ring is provided with two, and is arranged above and below the outer peripheral wall of the driving disc.

[0048] Specifically, the first sealing ring is sleeved on the outer peripheral wall of the driving disc, the outer peripheral wall of the driving disc has a groove B21, the first sealing ring is sleeved on the groove on the outer peripheral wall of the driving disc, half of the first sealing ring is embedded in the groove, and the other half protrudes out of the groove to extrude and contact the inner side wall of the upper shell and can move along the surface thereof.

[0049] The upper shell, the driving disc and the sealing ring constitute a sealed cavity, and the second gas interface P2 is arranged between the driving disc and the valve plate seat, when the first gas interface arranged on the upper shell is connected with the vacuum suction, the driving disc can move along the inner side wall of the upper shell under the action of vacuum suction.

[0050] The second spring B8 is arranged between the driving disc and the upper shell, and the second spring has sufficient free length and sufficient compression amount; the driving disc is lifted under the action of the vacuum suction force and simultaneously presses the second spring, until the second spring is maximally compressed; when the vacuum suction force of the first gas interface disappears, the compression force of the second spring acts on the driving disc, and the great compression force of the second spring promotes the driving disc to move towards the valve plate seat, the driving disc drives the valve plate to move towards the valve port, and the vacuum valve is closed; when closed, the second spring is in a semi-compressed state; in the embodiment, the selection of the second spring changes the original vacuum suction of the first gas interface and the second gas interface in turn into vacuum suction only by the first gas interface, so that the opening and closing of the valve are realized; the embodiment also has the actuation of opening and closing the vacuum valve, but the overall vacuum gas supply measure can be reduced by half.

[0051] In order to realize the miniaturization of the vacuum valve, in the design, the middle part of the driving disc is protruded towards the upper shell, and the valve plate seat is designed to match the shape of the driving disc; in the limited space, the displacement stroke of the driving disc, i.e. the displacement stroke of the valve plate, is lengthened, so compared with other vacuum valves with the same displacement stroke, the volume of the upper shell can be reduced, and the overall volume of the vacuum valve is reduced; in further optimization, the middle part of the inner top wall of the upper shell is protruded towards the driving disc; from the outside, the top part of the upper shell is recessed in the middle, and the first gas interface is arranged at the center of the recessed part, so the length of the upper shell (the length is in the direction of the displacement of the driving disc) can be further reduced, and the volume of the vacuum valve can be further reduced.

[0052] In the example, it needs to be explained that when the upper shell is demolded from the mold, due to technical reasons, the inner side wall of the upper shell is not perpendicular to the inner top wall, but is outwardly inclined to form an obtuse angle, so if the sealing ring is not arranged, the gap between the driving disc and the inner side wall of the upper shell will gradually become smaller in the lifting process of the driving disc, the extrusion between the driving disc and the inner side wall of the upper shell will become tighter and tighter, until the driving disc cannot be lifted, resulting in failure of opening the valve, so the arrangement of the sealing ring not only can realize the sealed connection between the driving disc and the inner side wall of the upper shell, but also the slight deformation of the rubber can better adapt to the size change of the gap between the driving disc and the inner side wall of the upper shell, and the valve can be smoothly opened.

[0053] In the embodiment, the driving disc can be a rubber disc or a metal disc.

[0054] In the embodiment, in order to tightly fit the valve head of the valve plate with the valve port, the valve head is coated with a layer of rubber, and the rubber coating type can be full rubber coating of the valve plate body or partial rubber coating of the rubber-embedded part at the joint with the valve port, so the slight deformation of the rubber can improve the tightness of the contact point.

[0055] The working process of the embodiment is as follows:

[0056] Under normal conditions, the drive disc is close to the valve plate seat, the valve head of the valve plate is pressed against the valve port, and the valve is in the closed state.

[0057] Opening the valve: Connect the first gas port in the middle of the top of the upper housing to the vacuum source. The drive plate moves upward under the vacuum suction force, and at the same time, it drives the valve plate to move from the valve port to the valve plate seat, thus opening the valve.

[0058] Closing the valve: Disconnect the vacuum source from the first gas interface. The compression force of the second spring acts on the drive plate. The huge compression force of the second spring will cause the drive plate to move towards the valve plate seat. The drive plate drives the valve plate to move towards the valve port, thus closing the vacuum valve.

[0059] Example 3:

[0060] like Figures 5-6 As shown, a novel vacuum valve with monitoring function has a structure that is basically the same as that of Embodiment 2, except that: an inner cylinder B9 is provided inside the upper housing and closely attached to the inner side wall. The cross-section of the inner cylinder is a circle that conforms to the shape of the end cap. The inner cylinder is located between the inner top wall of the upper housing and the valve plate seat, and the cylinder wall of the inner cylinder is perpendicular to the inner top wall / valve plate seat. The inner cylinder and the upper housing are sealed and connected by a second sealing ring B10, and the inner side wall of the inner cylinder is sealed and connected to the drive disc by a first sealing ring B7.

[0061] An inner cylinder perpendicular to the top wall of the upper shell can eliminate the outward tilting of the inner wall caused by demolding. The gap between the drive disc and the inner wall of the inner cylinder is of uniform size, and the drive disc moves more smoothly in the inner cylinder.

[0062] Example 4:

[0063] like Figures 7-10 As shown, a vacuum drainage system includes the vacuum valve described in Embodiments 1-3. The vacuum valve is connected to the drainage pipe 2, that is, the water inlet of the vacuum valve is connected to the sewage well through the drainage pipe, and the water outlet is connected to the vacuum station through the drainage pipe.

[0064] Figure 7 When the vacuum valve is closed, the pressure value at monitoring port P3 is equal to the high water pressure value in the sewage well. Figure 8 This is the open state of the vacuum valve when pumping water. At this time, the pressure value of monitoring port P3 is equal to the vacuum pressure value. Figure 9 This is the closed state of the vacuum valve after it has pumped out the sewage. At this time, the monitoring port P3 is equal to the atmospheric pressure value. Figure 10 When the vacuum valve is blocked by debris and in a partially open / closed state, the pressure value at monitoring port P3 is equal to the vacuum pressure value.

[0065] When the valve is opened, the drain pipeline is completely communicated between the water inlet end and the water outlet end of the vacuum valve and the vacuum station, and the entire pipeline is filled with vacuum negative pressure suction, the sewage in the sewage well flows to the vacuum station through the drain pipeline, the water inlet end and the water outlet end of the vacuum valve, and the monitoring port on the vacuum valve is communicated with the drain pipeline and monitors that the air pressure value in the drain pipeline is a negative pressure value; when the valve is closed, the water inlet end and the water outlet end of the vacuum valve are not communicated, that is, the drain pipelines connected to the two sides of the vacuum valve are not communicated, the drain pipeline on the water inlet end side of the vacuum valve cannot be communicated with the vacuum station, and the sewage in the sewage well cannot be pumped, at this time, the monitoring port on the vacuum valve is communicated with the drain pipeline on the water inlet end side and not communicated with the drain pipeline on the water outlet end side, the air pressure value in the drain pipeline on the water inlet end side is an atmospheric pressure value, and therefore the air pressure value monitored by the monitoring port is an atmospheric pressure value, and when the sewage continuously flows into the sewage well and the water level does not reach the starting threshold of the vacuum valve, the air pressure value in the drain pipeline on the water inlet end side is equal to the water pressure value (the water pressure value changes with the rising of the water level), and therefore the air pressure value monitored by the monitoring port is equal to the water pressure value; therefore, when the air pressure value at the monitoring port changes from the water pressure value to the vacuum negative pressure value and then to the atmospheric pressure value once, it indicates that the vacuum valve is opened and closed once, and thus the opening and closing counting of the vacuum valve can be realized; in addition, the duration of the vacuum negative pressure value when the vacuum valve is opened once is the time T0 of the vacuum valve when it is opened once, when the duration t of the vacuum negative pressure value is greater than T0, it indicates that the vacuum valve fails to be closed, and the technician should immediately go to the scene for maintenance; when no vacuum negative pressure value is monitored, it indicates that the vacuum valve fails to be opened, and the technician should also immediately go to the scene for maintenance; the vacuum valve in the embodiment has a monitoring function, can realize the opening and closing counting, timely reflect the opening and closing of the vacuum valve, monitor whether the opening and closing of the vacuum valve is abnormal, and ensure the normal operation of the drainage system.

[0066] The utility model can connect the detection port P3 of the vacuum valve through the gas pipeline from the vacuum well outside, can detect the change of the air pressure value in the vacuum valve outside the vacuum well to monitor the vacuum valve opening counting, avoids the situation that the vacuum valve counting function is inaccurate and the fault problem cannot be found in time to cause the major loss due to the influence of the environment in the vacuum well.

[0067] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center / center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0068] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "linkage", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.In addition, the technical features involved in the different embodiments of the utility model described below can be combined as long as they do not conflict with each other.

[0069] It should be emphasized that: the above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the scope of the technical scheme of the utility model.

Claims

1. A novel vacuum valve with monitoring function, characterized in that, The valve includes a valve body, which contains a valve plate, a valve plate seat, and a valve port. The valve plate seat is located in the middle of the valve body, and the valve port is located in the lower part of the valve body. The tail end of the valve plate passes through the valve plate seat and is located between the valve plate seat and the valve port. The valve body is provided with a monitoring port, which is located between the valve plate seat and the valve port, and the monitoring port is connected to an external sensor.

2. The novel vacuum valve with monitoring function according to claim 1, characterized in that, The valve body includes an upper housing and a lower housing, which are detachably connected. The valve plate seat and the valve port are both located in the lower housing. A drive assembly is provided between the upper housing and the valve plate seat. The front end of the valve plate is fixedly connected to the drive assembly. The drive assembly drives the valve plate to move back and forth so that the rear end of the valve plate moves away from or closer to the valve port, thereby realizing the opening and closing of the valve.

3. The novel vacuum valve with monitoring function according to claim 2, characterized in that, The upper housing is provided with a first gas interface, which is used to connect a vacuum source to control the operation of the drive component.

4. The novel vacuum valve with monitoring function according to claim 2, characterized in that, The drive assembly includes a rubber diaphragm and a spring. The rubber diaphragm is sandwiched between the upper and lower housings, so that the upper and lower housings are sealed together and cannot be vented. The rubber diaphragm is fixedly connected to the first end of the valve plate. The spring is located between the rubber diaphragm and the upper housing. When the rubber diaphragm deforms and recovers its deformation, it can drive the valve plate to move back and forth between the valve plate seat and the valve port; when the rubber diaphragm deforms and moves upward to the housing, it can compress the spring and recover its deformation under the force of the spring.

5. The novel vacuum valve with monitoring function according to claim 4, characterized in that, The rubber diaphragm is fixedly connected to the valve plate via a tray, and the center of the tray protrudes upwards from the housing.

6. The novel vacuum valve with monitoring function according to claim 2, characterized in that, The drive assembly includes a drive disc and a spring. The drive disc is fixedly connected to the front end of the valve plate, and the spring is disposed between the upper housing and the drive disc. When the drive disc moves back and forth, it can drive the tail end of the valve plate to move back and forth between the valve plate seat and the valve port; when the drive disc is displaced upward by force, it can squeeze the spring and move downward under the force of the spring.

7. The novel vacuum valve according to claim 6, characterized in that, The inner wall of the upper housing is sealed to the drive disk by a sealing element.

8. The novel vacuum valve according to claim 6, characterized in that, The upper housing is provided with a circular inner cylinder, which is sealed to the upper housing by a sealing element, and the inner wall of the inner cylinder is sealed to the drive disc by a sealing element.

9. The novel vacuum valve with monitoring function according to claim 2, characterized in that, The middle part of the inner top wall of the upper shell protrudes into the lower shell.

10. A vacuum drainage system, characterized in that, The vacuum valve includes any one of claims 1-9, wherein the inlet end of the vacuum valve is connected to a sewage well via a pipeline, and the outlet end is connected to a vacuum station via a pipeline.

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