A valve structure

Abstract

The embodiment of the present application relates to the technical field of valve structures, and discloses a valve structure, wherein the valve body has a first cavity, a second cavity, and a first vent, a second vent, and a third vent connected to the first cavity. It also includes a first vent pipe and a second vent pipe, and the first vent pipe and the second vent pipe are configured so that one end can be connected or disconnected with the first vent and the second vent, respectively, and the other end can be connected to or isolated from the second cavity. The valve structure provided in the embodiment of the present application only requires a small amount of valve structures to meet the test work of the gas meter, and there is no need to set multiple valves in the test loop, which can effectively reduce the number of devices used in the test loop and effectively reduce the size of the test loop.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valves, in particular to a valve structure. Background Art

[0002] With the continuous development of society, the fuel people use for daily cooking has changed from conventional energy sources such as firewood and coal, which waste resources and cause serious pollution, to natural gas, coal gas, and even clean energy such as electricity. In the process of using clean energy, a gas meter is needed. The gas meter has an automatic accumulation function. Users can check the amount of gas used through the gas meter so that they can pay according to the amount of gas used.

[0003] Before leaving the factory, the gas meter needs to be tested for its metering accuracy to determine whether the gas meter is qualified. For example, the gas meter's ventilation volume is tested. At present, the two air inlets of the gas meter are usually connected in series in a test loop. In the test loop, multiple valves (usually four valves) are also connected in series. By switching the switches of each valve, the air intake accuracy of the two air inlets of the gas meter is tested.

[0004] However, in the above-mentioned method, more valves are required and more joints are provided accordingly, which makes the volume of the test loop larger and occupies a larger space. Utility Model Content

[0005] In view of this, the utility model provides a valve structure to solve the problem that in the existing gas test circuit, there are many valves, which makes the volume of the test circuit larger.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] The present application provides a valve structure, comprising a valve body, wherein the valve body has a first cavity, a second cavity, and a first vent, a second vent, and a third vent connected to the first cavity;

[0008] Also included are a first ventilation pipe and a second ventilation pipe, wherein the first ventilation pipe and the second ventilation pipe are respectively slidably connected to the cavity wall of the first cavity, and one end of the first ventilation pipe and the second ventilation pipe are located in the first cavity, and the other end is located outside the first cavity;

[0009] The first ventilation pipe and the second ventilation pipe are configured such that one end can be connected to or disconnected from the first ventilation port and the second ventilation port respectively, and the other end can be connected to or isolated from the second cavity.

[0010] The embodiment of the present application enables the valve structure to switch to a variety of different working states by placing the first vent pipe and the second vent pipe in different positions, and enables the valve structure to meet a variety of different application requirements, which can effectively improve the flexibility of the use of the valve structure. In this way, the valve structure can replace the situation where multiple valves are used at the same time, and only a small number of valve structures are needed to meet the use requirements, without the need to set up multiple valves in the working environment (test loop), which can effectively reduce the number of devices used in the test loop, effectively reduce the size of the test loop, and thus effectively reduce the space occupied by the test loop.

[0011] In a possible implementation, the valve body includes a top plate, a side plate and a first bottom plate;

[0012] The side plate is at least partially located between the top plate and the first bottom plate, and is arranged around the top plate, and the top plate, the side plate and the first bottom plate are arranged together to form the first cavity;

[0013] The first vent and the second vent are located on the top plate, and the first vent pipe and the second vent pipe are slidably connected to the first bottom plate.

[0014] In a possible implementation, the valve body further includes a second bottom plate, and the second bottom plate is located on a side of the first bottom plate facing away from the top plate;

[0015] Part of the side plate extends to the second bottom plate and is connected to the second bottom plate, and the side plate, the first bottom plate and the second bottom plate are jointly surrounded to form the second cavity, and the second cavity is connected to the outside;

[0016] The second bottom plate is used to abut against the other ends of the first ventilation pipe and the second ventilation pipe, so that the first ventilation pipe and the second ventilation pipe are isolated from the second cavity.

[0017] In a possible implementation, it further includes a driving device, wherein the driving device is located on the valve body;

[0018] The driving device is connected to the first ventilation pipe and the second ventilation pipe, and is used to drive the first ventilation pipe and the second ventilation pipe to slide relative to the valve body.

[0019] In a possible implementation, the first ventilation pipe has a first mounting portion, and the first mounting portion is connected to the driving device;

[0020] The second ventilation pipe has a second mounting portion, and the second mounting portion is connected to the driving device.

[0021] In a possible implementation, a first vent hole is formed on the first mounting portion, and the first vent hole is connected to the first cavity of the first vent pipe;

[0022] The second mounting portion is provided with a second ventilation hole, and the second ventilation hole is communicated with the first cavity of the second ventilation pipe.

[0023] In a possible implementation, one end of the first vent pipe facing the second cavity further comprises a first enclosure portion, the first enclosure portion is arranged around the outer periphery of the first vent hole, and the first enclosure portion is used to seal and abut against the second bottom plate to isolate the first vent hole from the second cavity;

[0024] One end of the second ventilation pipe facing the second cavity further has a second enclosure portion, the second enclosure portion is arranged around the outer periphery of the second ventilation hole, and the second enclosure portion is used for sealingly abutting against the second bottom plate to isolate the second ventilation hole from the second cavity.

[0025] In a possible implementation, the number of the first vent holes and the number of the second vent holes are both multiple, the multiple first vent holes are evenly distributed on the periphery of the first mounting portion, and the driving device is connected to the center of the first mounting portion;

[0026] A plurality of the second ventilation holes are evenly distributed on the periphery of the second mounting portion, and the driving device is connected to the center of the second mounting portion.

[0027] In one possible implementation, the driving device includes a first driving cylinder and a second driving cylinder;

[0028] The first drive cylinder comprises a first cylinder body and a first piston rod, and the second drive cylinder comprises a second cylinder body and a second piston rod;

[0029] The first cylinder body and the second cylinder body are both connected to the second bottom plate, and the first piston rod and the second piston rod are respectively located at the center of the first mounting portion and the second mounting portion.

[0030] In a possible implementation, the first vent pipe and the second vent pipe are configured to enable the valve structure to be in a first state and a second state; wherein:

[0031] When the valve structure is in the first state, one end of the first ventilation pipe is connected to and communicated with the first ventilation port, and the first ventilation pipe is isolated from the first cavity, and the other end of the first ventilation pipe is communicated with the second cavity;

[0032] One end of the second ventilation pipe is connected to the first cavity, and the other end is closed;

[0033] When the valve structure is in the second state, one end of the second ventilation pipe is connected to and communicated with the second ventilation port, and the second ventilation pipe is isolated from the first cavity, and the other end of the second ventilation pipe is communicated with the second cavity;

[0034] One end of the first ventilation pipe is connected to the first cavity, and the other end is closed.

[0035] In a possible implementation, it further includes a first ventilation joint and a second ventilation joint;

[0036] The first ventilation connector is connected to the first ventilation port, and the second ventilation connector is connected to the second ventilation port.

[0037] In a possible implementation, the device further includes a first sealing member and a second sealing member;

[0038] The first sealing member is located between the first ventilation pipe and the cavity wall of the valve body, and the second sealing member is located between the second ventilation pipe and the cavity wall of the valve body.

[0039] In a possible implementation, a third sealing member and a fourth sealing member are also included;

[0040] The third sealing member is located between the first ventilation pipe and the second bottom plate, and the fourth sealing member is located between the second ventilation pipe and the second bottom plate.

[0041] In a possible implementation, a fifth sealing member and a sixth sealing member are further included;

[0042] The fifth sealing member is located between the first ventilation joint and the first ventilation port, and the sixth sealing member is located between the second ventilation joint and the second ventilation port. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A schematic structural diagram of a valve structure provided in an embodiment of the present application at a viewing angle;

[0045] Figure 2 A schematic structural diagram of a valve structure provided in an embodiment of the present application from another perspective;

[0046] Figure 3 A cross-sectional view of a valve structure provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of a valve structure provided in an embodiment of the present application arranged in a test circuit;

[0048] Figure 5 A top view of a valve structure provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 100-valve structure;

[0051] 110 - valve body; 111 - first cavity; 112 - first vent; 113 - second vent;

[0052] 114 - third air vent; 115 - first air inlet; 116 - second air inlet;

[0053] 117- second cavity;

[0054] 101-top plate; 102-side plate; 103-first bottom plate; 104-second bottom plate;

[0055] 120 - first ventilation pipe; 121 - first mounting portion; 122 - first ventilation hole;

[0056] 123- first enclosure portion;

[0057] 130 - second ventilation pipe; 131 - second mounting portion; 132 - second ventilation hole;

[0058] 133- second enclosure portion;

[0059] 140-driving device; 141-first driving cylinder; 1411-first cylinder body;

[0060] 1412-first piston rod; 142-second driving cylinder; 1421-second cylinder body;

[0061] 1422-second piston rod;

[0062] 160-first ventilation connector;

[0063] 170 - second ventilation connector;

[0064] 180a-first sealing member; 180b-second sealing member;

[0065] 180c-third sealing member; 180d-fourth sealing member;

[0066] 180e-fifth sealing member; 180f-sixth sealing member;

[0067] 200-gas meter; 210-left air inlet; 220-right air inlet;

[0068] 10-test circuit; 300-fan; 400-detection device. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0070] As mentioned in the above background technology, the gas meter needs to be tested for its test accuracy before leaving the factory to determine whether the gas meter is qualified. For example, the gas meter's ventilation volume is tested. At present, the two air inlets of the gas meter are usually connected in series in the test circuit. In the test circuit, multiple valves (usually four valves are required) are also connected in series. By switching the switches of each valve, the air intake accuracy of the two air inlets of the gas meter is tested. For example, the air inlet on the gas meter can be divided into a left air inlet and a right air inlet. By switching the closed or open state of each valve, the gas can enter from the left air inlet of the gas meter and flow out from the right air inlet. Alternatively, the gas can also enter from the right air inlet of the gas meter and flow out from the left air inlet. To test whether the gas meter meets the requirements under the air intake state of the two air inlets.

[0071] However, in the above method, more valves are required and more joints are provided accordingly.

[0072] This makes the test loop larger and occupies more space.

[0073] Moreover, a large number of joints may easily cause leakage, thus affecting the overall test accuracy of the test circuit.

[0074] In addition, when a leak occurs, each valve and joint needs to be checked, which is a large workload and high cost.

[0075] In order to solve the above problems, the embodiment of the present application provides a valve structure, which can switch the valve structure to a variety of different working states by placing the first vent pipe and the second vent pipe in different positions, so that the valve structure can meet a variety of different application requirements, and can effectively improve the flexibility of the use of the valve structure. In this way, the valve structure can replace the situation where multiple valves are used at the same time, and only a small number of valve structures are needed to meet the use requirements, without the need to set up multiple valves in the working environment (test loop), which can effectively reduce the number of devices used in the test loop, effectively reduce the size of the test loop, and thus effectively reduce the space occupied by the test loop.

[0076] The valve structure provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0077] Figure 1 A schematic diagram of a valve structure provided in an embodiment of the present application at a viewing angle is shown. Figure 2 A schematic diagram of a valve structure provided in an embodiment of the present application from another perspective. Figure 3 A cross-sectional view of a valve structure provided in an embodiment of the present application, Figure 4 A schematic diagram of a valve structure provided in a test circuit according to an embodiment of the present application.

[0078] The present application embodiment provides a valve structure 100, which can be used in a test circuit 10 of a gas meter 200. Figure 1 and Figure 2 As shown, the valve structure 100 may include a valve body 110, combined with Figure 3 As shown, the valve body 110 can have a first cavity 111, a second cavity 117, and a first air vent 112, a second air vent 113, and a third air vent 114 connected to the first cavity 111, wherein the first air vent 112 and the second air vent 113 can be used to connect to two air inlets of the gas meter 200, for example, the first air vent 112 can be connected to the left air inlet 210 of the gas meter 200, and the second air vent 113 can be connected to the right air inlet 220 of the gas meter 200.

[0079] The valve structure 100 may further include a first vent pipe 120 and a second vent pipe 130, which may be slidably connected to the cavity wall of the first cavity 111, and one end of the first vent pipe and the second vent pipe may be located inside the first cavity 111, and the other end may be located outside the first cavity 111. For example, the first vent pipe 120 and the second vent pipe 130 may be tubular structures, and the first vent pipe 120 and the second vent pipe 130 may be inserted into the cavity wall of the valve body 110 and may slide relative to the cavity wall of the valve body 110.

[0080] For example, the valve body 110 may be provided with a first matching hole and a second matching hole, and the first matching hole and the second matching hole may penetrate the cavity wall of the valve body 110. The first vent pipe 120 may be inserted into the first matching hole and slidably matched with the first matching hole, and the second vent pipe 130 may be inserted into the second matching hole and slidably matched with the second matching hole.

[0081] The first ventilation pipe 120 and the second ventilation pipe 130 may be configured such that one end can be connected to or disconnected from the first ventilation port 112 and the second ventilation port 113 respectively, and the other end can be connected to or isolated from the second cavity 117 .

[0082] The second cavity 117 may be connected to the outside, or may be connected to other circuits, gas sources, cavities or spaces, etc. The following description will be made by taking the second cavity 117 being connected to the outside as an example.

[0083] See also Figure 4 As shown, Figure 4 Schematic diagram of the valve structure 100 installed in the test loop 10. When the valve structure 100 is applied to the test loop 10, the first vent 112 and the second vent 113 of the valve structure 100 can be connected and communicated with the left air inlet 210 and the right air inlet 220 of the gas meter 200, respectively. The third vent 114 can be connected to the fan 300 in the test loop 10.

[0084] When the gas meter needs to test the ventilation condition of the left air inlet 210, one end of the first ventilation pipe 120 can be connected to and communicated with the first ventilation port 112. At this time, the first ventilation pipe 120 is isolated from the first cavity 111 of the valve body 110. The other end of the first ventilation pipe 120 is communicated with the outside. One end of the second ventilation pipe 130 can be disconnected from the second ventilation port 113. At this time, the second ventilation pipe 130 is in a communicating state with the first cavity 111, and the other end of the second ventilation pipe 130 can be closed.

[0085] Starting the fan 300 can generate high pressure to suck the air in the valve body 110, so that negative pressure is generated in the valve body 110, and the external gas can enter the first ventilation pipe 120 from the other end of the first ventilation pipe 120, and then enter the left air inlet 210 of the gas meter 200 through the first vent 112, flow out from the right air inlet 220 of the gas meter 200 and enter the first cavity 111 of the valve body 110 through the second vent 113. Since one end of the second ventilation pipe 130 is connected to the first cavity 111 and the other end is in a closed state, the gas will not flow out through the second ventilation pipe 130. Therefore, the gas will flow out from the third vent 114 to the fan 300 and be discharged to the outside by the fan 300.

[0086] In the above process, the ventilation condition of the gas meter 200 when the left air inlet 210 is inhaled can be detected to test whether the air intake of the left air inlet 210 of the gas meter 200 meets the requirements. For example, a detection device 400 can be connected in series between the fan 300 and the third air vent 114. For example, the detection device 400 can be a standard sonic nozzle group. When the gas passes through the third air vent 114 to the fan 300, it can pass through the detection device. The detection device can measure the size of the airflow to obtain the size of the ventilation volume of the gas meter 200, thereby judging whether the ventilation volume of the gas meter 200 meets the requirements.

[0087] Correspondingly, when it is necessary to test the ventilation condition of the right air inlet 220, one end of the second ventilation pipe 130 can be connected to and communicated with the second air inlet 113, at which time, the second ventilation pipe 130 is isolated from the first cavity 111 of the valve body 110. The other end of the second ventilation pipe 130 is connected to the outside. One end of the first ventilation pipe 120 can be disconnected from the first air inlet 112, at which time, the first ventilation pipe 120 is in a connected state with the first cavity 111, and the other end of the first ventilation pipe 120 can be closed. At this time, starting the high-pressure blower 300 can realize the test of the air intake condition of the right air inlet 220 of the gas meter 200.

[0088] Alternatively, in some examples, the valve structure 100 may be switched to other different working states according to different application scenarios. For example, one end of the first vent pipe 120 and the second vent pipe 130 may be connected to and communicated with the first vent port 112 and the second vent port 113 respectively, and the other ends of the first vent pipe 120 and the second vent pipe 130 may be connected to the second cavity 117.

[0089] Alternatively, one end of the first vent pipe 120 and the second vent pipe 130 may be disconnected from the first vent port 112 and the second vent port 113 respectively, so that the first vent pipe 120 and the second vent pipe 130 are connected to the first cavity 111. The other ends of the first vent pipe 120 and the second vent pipe 130 are isolated from the second cavity 117.

[0090] In this way, the valve structure 100 can achieve a variety of different working states, so that the valve structure 100 can meet a variety of different application scenarios, and can effectively improve the flexibility of the use of the valve structure 100.

[0091] The embodiment of the present application enables the valve structure 100 to switch to a variety of different working states by placing the first vent pipe 120 and the second vent pipe 130 in different positions, and enables the valve structure 100 to meet a variety of different application requirements, which can effectively improve the flexibility of the use of the valve structure. In this way, the valve structure 100 can replace the situation where multiple valves are used at the same time, and only a small number of valve structures 100 are needed to meet the use requirements, and there is no need to set up multiple valves in the working environment (for example, the test loop), which can effectively reduce the number of devices used in the test loop 10, effectively reduce the size of the test loop 10, and thus effectively reduce the space occupied by the test loop 10.

[0092] Moreover, compared with the case of multiple valve structures 100 , the number of joints using one valve structure 100 is less, and the probability of leakage is lower, which can effectively improve the overall test accuracy of the test loop 10 .

[0093] In addition, when a leak occurs in the test loop 10, the number of connectors and components that need to be checked is also small, the workload is small, and the work cost can be effectively reduced.

[0094] For example, the first vent pipe 120 and the second vent pipe 130 can be configured to enable the valve structure 100 to be in a first state and a second state. When the valve structure 100 is in the first state, one end of the first vent pipe 120 can be connected to and communicated with the first vent port 112, and the first vent pipe 120 is isolated from the first cavity 111 of the valve body 110. The other end of the first vent pipe 120 is connected to the outside. One end of the second vent pipe 130 is connected to the first cavity 111, and the other end of the second vent pipe 130 is closed.

[0095] When the valve structure 100 is in the second state, one end of the second vent pipe 130 can be connected to and communicated with the second vent port 113, and the second vent pipe 130 is isolated from the first cavity 111 of the valve body 110. The other end of the second vent pipe 130 is connected to the outside. One end of the first vent pipe 120 is connected to the first cavity 111, and the other end of the first vent pipe 120 is closed.

[0096] In the test loop, when the valve structure 100 is in the first state, the high-pressure blower 300 is started to suck the air in the valve body 110, so that negative pressure is generated in the valve body 110, and the external gas can enter the first vent pipe 120 from the other end of the first vent pipe 120, and then enter the left air inlet 210 of the gas meter 200 through the first vent port 112, flow out from the right air inlet 220 of the gas meter 200 and enter the first cavity 111 of the valve body 110 through the second vent port 113. Since one end of the second vent pipe 130 is connected to the first cavity 111 and the other end is in a closed state, the gas will not flow out through the second vent pipe 130. Therefore, the gas will flow out from the third vent port 114 to the blower 300 and be discharged to the outside by the blower 300.

[0097] In the above process, the ventilation condition of the gas meter 200 when taking in air at the left air inlet 210 can be detected to test whether the air intake at the left air inlet 210 of the gas meter 200 meets the requirements.

[0098] Correspondingly, when the valve structure 100 is in the second state, the high pressure starts to suck the air in the valve body 110, so that negative pressure is generated in the valve body 110, and the external gas can enter the second vent pipe 130 from the other end of the second vent pipe 130, and then enter the right air inlet 220 of the gas meter 200 through the second vent 113, flow out from the left air inlet 210 of the gas meter 200 and enter the first cavity 111 of the valve body 110 through the first vent 112. Since one end of the first vent pipe 120 is connected to the first cavity 111 at this time, and the other end is in a closed state, the gas will not flow out through the first vent pipe 120. Therefore, the gas will flow out from the third vent 114 to the fan 300 and be discharged to the outside by the fan 300. In this process, the ventilation condition of the gas meter 200 when the right air inlet 220 is inhaled can be detected to test whether the air intake of the right air inlet 220 of the gas meter 200 meets the requirements.

[0099] Continue to see Figure 3 As shown, the valve body 110 may include a top plate 101, a side plate 102 and a first bottom plate 103, at least a portion of the side plate 102 may be located between the top plate 101 and the first bottom plate 103, and the side plate 102 may be arranged on the top plate 101, the top plate 101, the side plate 102 and the first bottom plate 103 may be arranged together to form a first cavity 111, for example, the top plate 101 and the first bottom plate 103 may be rectangular in shape, the side plate 102 may have four, the four side plates 102 may be connected end to end and respectively connected to the four sides of the top plate 101 and the first bottom plate 103 to form the first cavity 111.

[0100] The first vent and the second vent can be located on the top plate 101, and the first vent pipe 120 and the second vent pipe 130 can be slidably connected to the first bottom plate 103. In this way, when the first vent pipe 120 and the second vent pipe 130 are slidably connected relative to the first bottom plate 103, one end of the first vent pipe 120 and the second vent pipe 130 located in the first cavity 111 can be connected to or disconnected from the first vent, so that the valve structure can switch to different working states.

[0101] Continue to see Figure 3 As shown, the valve structure can also include a second bottom plate 104, the second bottom plate 104 can be located on the side of the first bottom plate 103 facing away from the top plate 101, a portion of the side plate 102 can extend to the second bottom plate 104 and be connected to the second bottom plate 104, the side plate 102, the first bottom plate 103 and the second bottom plate 104 can be connected to form a second cavity 117, and the second cavity 117 can be connected to the outside.

[0102] For example, only two or three of the side plates 102 may be extended to the second bottom plate 104, while the remaining one or two side plates 102 do not extend to the second bottom plate 104, so that at least one side of the second cavity 117 is open to communicate with the outside. The first ventilation pipe 120 and the second ventilation pipe 130 may be connected to the outside through the second cavity 117, so that the gas in the test circuit can circulate.

[0103] The second bottom plate 104 is used to abut against the other ends of the first vent pipe 120 and the second vent pipe 130, so that the first vent pipe 120 and the second vent pipe 130 are isolated from the second cavity 117. For example, when the valve structure 100 is in the first state, one end of the first vent pipe 120 can be connected to and communicated with the first vent port 112, and the other end can be communicated with the second cavity 117 to communicate with the outside through the second cavity 117. One end of the second vent pipe 130 can be communicated with the first cavity 111, and the other end can abut against the second bottom plate 104. The second bottom plate 104 can seal the other end of the second vent pipe 130, so that the second vent pipe 130 is isolated from the second cavity 117. At this time, the air in the valve body 110 will not flow out to the outside through the second vent pipe 130, but will flow out through the third vent port 114.

[0104] Correspondingly, when the valve structure 100 is in the second state, one end of the second vent pipe 130 can be connected to and communicated with the second vent port 113, and the other end can be connected to the second cavity 117 to communicate with the outside through the second cavity 117. One end of the first vent pipe 120 is connected to the first cavity 111, and the other end can be abutted on the second bottom plate 104. The second bottom plate 104 can seal the other end of the first vent pipe 120 to isolate the first vent pipe 120 from the second cavity 117. At this time, the air in the valve body 110 will not flow out to the outside through the first vent pipe 120, but will flow out through the third vent port 114.

[0105] Continue to see Figure 3 As shown, the valve structure 100 may further include a driving device 140, which may be located on the valve body 110. The driving device 140 may be connected to the first ventilation pipe 120 and the second ventilation pipe 130. The driving device 140 may be used to drive the first ventilation pipe 120 and the second ventilation pipe 130 to slide relative to the valve body 110, so that the first ventilation pipe 120 and the second ventilation pipe 130 can be switched to different positions, thereby allowing the valve structure 100 to switch between the first state and the second state.

[0106] For example, see Figure 3As shown, the driving device 140 may include a first driving cylinder 141 and a second driving cylinder 142. The first driving cylinder 141 may include a first cylinder body 1411 and a first piston rod 1412. The second driving cylinder 142 may include a second cylinder body 1421 and a second piston rod 1422. The first cylinder body 1411 and the second cylinder body 1421 may both be connected to the second base plate 104, and the first piston rod 1412 and the second piston rod 1422 may be respectively connected to the first ventilation pipe 120 and the second ventilation pipe 130.

[0107] The first piston rod 1412 and the second piston rod 1422 can slide relative to the first cylinder body 1411 and the second cylinder body 1421 to push the first ventilation pipe 120 and the second ventilation pipe 130 to move back and forth, so that the first ventilation pipe 120 and the second ventilation pipe 130 move relative to the valve body 110 to achieve the switching of the valve structure 100 between the first state and the second state.

[0108] Continue to see Figure 3 As shown, the first vent pipe 120 may be provided with a first mounting portion 121, and the first mounting portion 121 may be connected to the driving device 140, for example, the first mounting portion 121 may be connected to the first piston rod 1412, for example, the first mounting portion 121 may be located at one end of the first vent pipe 120 facing the first piston rod 1412, and the first piston rod 1412 may be connected to the first connecting portion by means of a clamping connection, a threaded connection, etc. In this way, during the movement of the piston rod, the first vent pipe 120 may be driven to move by the first connecting portion, so that the other end of the first vent pipe 120 abuts against or separates from the second bottom plate 104, so as to switch the state of the valve structure 100.

[0109] Correspondingly, the second vent pipe 130 may be provided with a second mounting portion 131, which may be connected to the second piston rod 1422 in the driving device 140. For example, the second mounting portion 131 may be located at one end of the second vent pipe 130 facing the second piston rod 1422, and the second piston rod 1422 may be connected to the second connecting portion by means of a clamping connection, a threaded connection, etc. In this way, during the movement of the piston rod, the second vent pipe 130 may be driven to move by the second connecting portion, so that the other end of the second vent pipe 130 may abut against or separate from the second bottom plate 104, so as to switch the state of the valve structure 100.

[0110] Figure 5 A top view of a valve structure provided in an embodiment of the present application.

[0111] See also Figure 5As shown, a first vent hole 122 may be provided on the first mounting portion 121, and the first vent hole 122 may be connected to the first cavity of the first vent pipe 120. When the valve structure 100 is in the first state, one end of the first vent pipe 120 is connected to the first vent port 112, and during the suction process of the fan 300, external gas may enter the first vent pipe 120 through the first vent hole 122 and enter the gas meter 200. When the valve structure 100 is in the second state, the other end of the first vent pipe 120 abuts against the second bottom plate 104, and the second bottom plate 104 may seal the other end of the first vent pipe 120 to close the first vent hole 122, so that air cannot flow out through the first vent hole 122.

[0112] Correspondingly, a second vent hole 132 may be provided on the second mounting portion 131, and the second vent hole 132 may be connected to the first cavity of the second vent pipe 130. When the valve structure 100 is in the second state, one end of the second vent pipe 130 is connected to the second vent port 113, and during the suction process of the fan 300, external gas may enter the second vent pipe 130 through the second vent hole 132 and enter the gas meter 200. When the valve structure 100 is in the first state, the other end of the second vent pipe 130 abuts against the second bottom plate 104, and the second bottom plate 104 may seal the other end of the second vent pipe 130 to close the second vent hole 132, so that air cannot flow out through the second vent hole 132.

[0113] Continue to see Figure 5 As shown, the number of the first vent holes 122 and the second vent holes 132 can be multiple, the multiple first vent holes 122 can be evenly distributed on the periphery of the first mounting portion 121, and the driving device 140 can be connected to the center of the first mounting portion 121. For example, the number of the first vent holes 122 can be four, the four first vent holes 122 can be evenly arranged around the center of the first mounting portion 121, and the first piston rod 1412 can be connected to the central part of the first mounting portion 121.

[0114] In this way, the first piston rod 1412 can push and pull the first ventilation pipe 120 at the center of the first mounting part 121, which can improve the uniformity of the force on the first mounting part 121, and can effectively reduce or avoid the deviation or jamming of the first ventilation pipe 120 during the sliding process, which helps to improve the smoothness and reliability of the sliding of the first ventilation pipe 120.

[0115] Moreover, by evenly distributing the first vent holes 122 on the periphery of the first mounting portion 121, the symmetry of the overall structure of the first mounting portion 121 can be improved, so that the center of gravity of the first mounting portion 121 can be located at the center, which helps to further improve the uniformity of the force applied to the first mounting portion 121 during the process in which the first piston rod 1412 pushes and pulls the first mounting portion 121. In addition, the gas can also flow evenly on the first mounting portion 121, thereby effectively improving the uniformity and stability of the airflow applied to the first mounting portion 121.

[0116] Accordingly, the plurality of second vent holes 132 may be evenly distributed on the periphery of the second mounting portion 131, and the driving device 140 may be connected to the center of the second mounting portion 131. For example, the number of the second vent holes 132 may also be four, and the four second vent holes 132 may be evenly arranged around the center of the second mounting portion 131, and the second piston rod may be connected to the center of the second mounting portion 131.

[0117] This can effectively improve the uniformity of the force on the first mounting portion 121, effectively reduce or avoid the deviation or jamming of the second ventilation pipe 130 during the sliding process, and help improve the smoothness and reliability of the sliding of the second ventilation pipe 130. In addition, the symmetry of the overall structure of the second mounting portion 131 can be improved, and the uniformity of the force on the second mounting portion 131 can be further improved. In addition, the gas can flow evenly on the second mounting portion 131, thereby effectively improving the uniformity and stability of the airflow received by the second mounting portion 131.

[0118] Continue to see Figure 3 As shown, the first vent pipe 120 may further have a first enclosure 123 at one end thereof facing the second cavity 117. The first enclosure 123 may be arranged around the outer periphery of the first vent hole 122. For example, when there are multiple first vent holes 122, the first enclosure 123 may enclose all the first vent holes 122. Alternatively, the first enclosure 123 may be arranged around the outer periphery of each first vent hole 122. The first enclosure 123 may be used to abut against the second bottom plate 104 to isolate the first vent hole 122 from the second cavity 117. For example, when the first vent pipe 120 slides toward the second bottom plate 104 and abuts against the second bottom plate 104, the first enclosure 123 may be sealed and abutted against the second bottom plate 104 to enclose the first vent hole 122 inside the first enclosure 123, thereby isolating the first vent hole 122 from the second cavity 117. This can effectively prevent the air in the second cavity 117 from entering the first ventilation pipe 120 through the first ventilation hole 122, which is beneficial to improving the reliability and stability of the isolation between the first ventilation pipe 120 and the second cavity 117, and improving the reliability of the operation of the valve structure 100.

[0119] Correspondingly, the second vent pipe 130 may further have a second enclosure 133 at one end thereof facing the second cavity 117. The second enclosure 133 may be arranged around the outer periphery of the second vent hole 132. For example, when there are multiple second vent holes 132, the second enclosure 133 may enclose all the second vent holes 132. Alternatively, the second enclosure 133 may be arranged around the outer periphery of each second vent hole 132. The second enclosure 133 may be used to abut against the second bottom plate 104 to isolate the second vent hole 132 from the second cavity 117. For example, when the second vent pipe 130 slides toward the second bottom plate 104 and abuts against the second bottom plate 104, the second enclosure 133 may be sealed and abutted against the second bottom plate 104 to enclose the second vent hole 132 inside the second enclosure 133, thereby isolating the second vent hole 132 from the second cavity 117. This can effectively prevent the air in the second cavity 117 from entering the second ventilation pipe 130 through the second ventilation hole 132, which is beneficial to improving the reliability and stability of the isolation between the second ventilation pipe 130 and the second cavity 117, and improving the reliability of the operation of the valve structure 100.

[0120] Continue to see Figure 3 As shown, the valve structure 100 may also include a first ventilation connector 160 and a second ventilation connector 170, wherein the first ventilation connector 160 may be connected to the first ventilation port 112, for example, one end of the first ventilation connector 160 may be inserted into the first ventilation port 112 and sealedly connected to the first ventilation port 112, so that the first ventilation head is communicated with the first cavity 111 of the valve body 110, and the other end of the first ventilation connector 160 may be connected to the left air inlet 210 of the gas meter 200, for example, the other end of the first ventilation connector 160 may be connected to the left air inlet 210 of the gas meter 200 via a connecting pipe, so that the gas in the valve body 110 can enter the gas meter 200 via the connecting pipe.

[0121] Accordingly, one end of the second vent connector 170 can be inserted into the second vent port 113 and sealedly connected to the second vent port 113, so that the second vent head is connected to the first cavity 111 of the valve body 110, and the other end of the second vent connector 170 can be connected to the right air inlet 220 of the gas meter 200. For example, the other end of the second vent connector 170 can be connected to the right air inlet 220 of the gas meter 200 through a connecting pipe, so that the gas in the valve body 110 can enter the gas meter 200 through the connecting pipe.

[0122] The valve structure 100 may also include a plurality of sealing members so that the various structural members in the valve structure 100 can be sealed and connected. Figure 3As shown, the valve structure 100 may include a first seal 180a and a second seal 180b, and the first seal 180a may be located between the first vent pipe 120 and the cavity wall of the valve body 110. For example, the first seal 180a may be located between the first vent pipe 120 and the inner wall of the first air inlet 115. This can effectively reduce or avoid leakage between the first vent pipe 120 and the valve body 110, help improve the sealing between the first vent pipe 120 and the valve body 110, and improve the overall switching accuracy of the valve structure 100.

[0123] The second sealing member 180b may be located between the second vent pipe 130 and the cavity wall of the valve body 110. For example, the second sealing member 180b may be located between the second vent pipe 130 and the inner wall of the second air inlet 116. This can effectively reduce or avoid leakage between the second vent pipe 130 and the valve body 110, help improve the sealing between the second vent pipe 130 and the valve body 110, and improve the overall switching accuracy of the valve structure 100.

[0124] Continue to see Figure 3 As shown, the valve structure 100 may further include a third sealing member 180c and a fourth sealing member 180d. The third sealing member 180c may be located between the first vent pipe 120 and the second bottom plate 104. For example, when the other end of the first vent pipe 120 abuts against the second bottom plate 104, the third sealing member 180c may be located at the abutting portion of the first vent pipe 120 and the second bottom plate 104. For example, the third sealing member 180c may be provided between the first mounting portion 121 and the second bottom plate 104, and between the first enclosure portion 123 and the second bottom plate 104, so that the first vent pipe 120 and the second cavity 117 can be isolated from each other, so that the second bottom plate 104 can tightly seal the other end of the first vent pipe 120, which can effectively improve the reliability and stability of the second bottom plate 104 sealing the first vent pipe 120.

[0125] The fourth sealing member 180d may be located between the second vent pipe 130 and the second bottom plate 104. For example, when the other end of the second vent pipe 130 abuts the second bottom plate 104, the fourth sealing member 180d may be located at the abutting portion of the second vent pipe 130 and the second bottom plate 104. For example, the fourth sealing member 180d may be provided between the second mounting portion 131 and the second bottom plate 104, and between the second enclosure portion 133 and the second bottom plate 104, so that the second vent pipe 130 and the second cavity 117 can be isolated from each other, so that the second bottom plate 104 can tightly seal the other end of the second vent pipe 130, so as to improve the reliability and stability of the second bottom plate 104 sealing the second vent pipe 130.

[0126] Continue to see Figure 3As shown, the valve structure 100 may further include a fifth seal 180e and a sixth seal 180f. The fifth seal 180e may be located between the first ventilation connector 160 and the first ventilation port 112. This may reduce or avoid leakage between the first ventilation connector 160 and the first ventilation port 112, and may effectively improve the sealing between the first ventilation connector 160 and the first ventilation port 112, thereby effectively improving the switching accuracy of the valve structure 100.

[0127] The sixth sealing member 180f can be located between the second ventilation connector 170 and the second ventilation port 113, which can reduce or avoid leakage between the second ventilation connector 170 and the second ventilation port 113, and can effectively improve the sealing between the second ventilation connector 170 and the second ventilation port 113, thereby effectively improving the switching accuracy of the valve structure 100.

[0128] Correspondingly, other seals may be provided at other parts of the valve structure 100 to improve the sealing effect of the valve structure 100 and enhance the switching accuracy of the valve structure 100. For example, a right seal may be provided between the first ventilation pipe 120 and the first ventilation port 112, and between the second ventilation pipe 130 and the second ventilation port 113 to improve the sealing effect of the valve structure 100, which will not be described in detail here.

[0129] In the embodiments of the present application, the terms "second" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "second" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more groups.

[0130] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0131] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0132] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0133] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0134] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A valve structure, characterized in that: The valve body comprises a first cavity, a second cavity, and a first vent, a second vent and a third vent connected to the first cavity; Also included are a first ventilation pipe and a second ventilation pipe, wherein the first ventilation pipe and the second ventilation pipe are respectively slidably connected to the cavity wall of the first cavity, and one end of the first ventilation pipe and the second ventilation pipe are located in the first cavity, and the other end is located outside the first cavity; The first ventilation pipe and the second ventilation pipe are configured such that one end can be connected to or disconnected from the first ventilation port and the second ventilation port respectively, and the other end can be connected to or isolated from the second cavity.

2. The valve structure according to claim 1, characterized in that: The valve body comprises a top plate, a side plate and a first bottom plate; The side plate is at least partially located between the top plate and the first bottom plate, and is arranged around the top plate, and the top plate, the side plate and the first bottom plate are arranged together to form the first cavity; The first vent and the second vent are located on the top plate, and the first vent pipe and the second vent pipe are slidably connected to the first bottom plate.

3. The valve structure according to claim 2, characterized in that: The valve body further comprises a second bottom plate, which is located on a side of the first bottom plate facing away from the top plate; Part of the side plate extends to the second bottom plate and is connected to the second bottom plate, and the side plate, the first bottom plate and the second bottom plate are jointly surrounded to form the second cavity, and the second cavity is connected to the outside; The second bottom plate is used to abut against the other ends of the first ventilation pipe and the second ventilation pipe, so that the first ventilation pipe and the second ventilation pipe are isolated from the second cavity.

4. The valve structure according to claim 3, characterized in that: Also includes a driving device, the driving device is located on the valve body; The driving device is connected to the first ventilation pipe and the second ventilation pipe, and is used to drive the first ventilation pipe and the second ventilation pipe to slide relative to the valve body.

5. The valve structure according to claim 4, characterized in that: The first ventilation pipe has a first mounting portion, and the first mounting portion is connected to the driving device; The second ventilation pipe has a second mounting portion, and the second mounting portion is connected to the driving device.

6. The valve structure according to claim 5, characterized in that: A first vent hole is formed on the first mounting portion, and the first vent hole is connected to the first cavity of the first vent pipe; The second mounting portion is provided with a second ventilation hole, and the second ventilation hole is communicated with the first cavity of the second ventilation pipe.

7. The valve structure according to claim 6, characterized in that: The first vent pipe further has a first enclosure portion at one end thereof facing the second cavity, the first enclosure portion being arranged around the outer periphery of the first vent hole, and the first enclosure portion being used for sealingly contacting with the second bottom plate to isolate the first vent hole from the second cavity; One end of the second ventilation pipe facing the second cavity further has a second enclosure portion, the second enclosure portion is arranged around the outer periphery of the second ventilation hole, and the second enclosure portion is used for sealingly abutting against the second bottom plate to isolate the second ventilation hole from the second cavity.

8. The valve structure according to claim 6 or 7, characterized in that: The number of the first vent holes and the number of the second vent holes are both multiple, the multiple first vent holes are evenly distributed on the periphery of the first mounting portion, and the driving device is connected to the center of the first mounting portion; A plurality of the second ventilation holes are evenly distributed on the periphery of the second mounting portion, and the driving device is connected to the center of the second mounting portion.

9. The valve structure according to any one of claims 5 to 7, characterized in that: The driving device comprises a first driving cylinder and a second driving cylinder; The first drive cylinder comprises a first cylinder body and a first piston rod, and the second drive cylinder comprises a second cylinder body and a second piston rod; The first cylinder body and the second cylinder body are both connected to the second bottom plate, and the first piston rod and the second piston rod are respectively located at the center of the first mounting portion and the second mounting portion.

10. The valve structure according to any one of claims 1 to 7, characterized in that: The first vent pipe and the second vent pipe are configured to enable the valve structure to be in a first state and a second state; wherein: When the valve structure is in the first state, one end of the first ventilation pipe is connected to and communicated with the first ventilation port, and the first ventilation pipe is isolated from the first cavity, and the other end of the first ventilation pipe is communicated with the second cavity; One end of the second ventilation pipe is connected to the first cavity, and the other end is closed; When the valve structure is in the second state, one end of the second ventilation pipe is connected to and communicated with the second ventilation port, and the second ventilation pipe is isolated from the first cavity, and the other end of the second ventilation pipe is communicated with the second cavity; One end of the first ventilation pipe is connected to the first cavity, and the other end is closed.

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