Gas distribution mechanism applied to valve

Abstract

The utility model discloses an air distribution mechanism applied to a valve, which comprises a connecting seat for connecting a valve body and a valve seat, an air inlet cavity and an air outlet cavity are arranged on the connecting seat, the air inlet cavity is communicated with an air inlet channel of the valve body and an air inlet channel of the valve seat, the air outlet cavity is communicated with an air outlet channel of the valve body and an air outlet channel of the valve seat, and a valve core is movably arranged in the air inlet cavity. The valve body is provided with a driving face which drives the valve element to move into the air inlet cavity and open the air inlet cavity, and an elastic piece which drives the valve element to move out of the air inlet cavity and close the air inlet cavity is arranged in the air inlet cavity. According to the scheme, closing of the air inlet channel of the valve seat can be achieved by normally disassembling the valve body, an air source does not need to be disconnected when the valve body is replaced, replacement efficiency is improved, replacement time is shortened, leakage of the air source in the valve seat is prevented, and safety coefficients of the valve seat and the valve body are improved; on the occasion that a plurality of valves are connected in parallel, when a certain valve body is disassembled, assembled and replaced, an air source does not need to be disconnected, and other valves connected in parallel can not be affected and continue to work normally.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of valve, especially to a gas distribution mechanism applied to a valve. BACKGROUND

[0002] Most of the current market valves (including but not limited to solenoid valves, air control valves, mechanical valves, etc.) have added hot plug function. The valve includes a valve seat and a valve body, the valve seat is provided with an air inlet channel and an air outlet channel, the valve body is provided with an air inlet channel and an air outlet channel, the valve seat and the valve body are directly connected in the prior art, the air inlet channel on the valve seat and the air inlet channel on the valve body are communicated, the air outlet channel on the valve seat and the air outlet channel on the valve body are communicated, the gas leakage on the valve seat during disassembly of the valve seat and the valve body of the existing valve is easy to cause energy loss and safety hazard, and the normal work of the valve is affected, the gas source needs to be disconnected during disassembly of the valve seat and the valve body, and there is the problem of long disassembly and replacement time.

[0003] For example, Chinese patent publication No. CN109958788A, published on July 2, 2019, named "a safe and thin valve body structure and a stove", including a valve seat and a valve core arranged in the valve seat, the valve seat is provided with a gas inlet, a valve core mounting space, an air inlet channel and a plurality of air outlet channels, the air inlet channel is respectively communicated with the gas inlet and the valve core mounting space, the air outlet channel is communicated with the valve core mounting space, the valve core is conical and arranged in the valve core mounting space, the valve core is provided with a plurality of gas holes corresponding to the air outlet channels, the valve core mounting space forms a conical space, and the gas enters the air outlet channel from the gas hole after passing through the valve core from the large diameter end of the valve core mounting space.

[0004] The existing patent has the following disadvantages: the gas leakage on the valve seat during disassembly of the valve seat and the valve body of the existing valve is easy to cause energy loss and safety hazard, and the normal work of the valve is affected, the gas source needs to be disconnected during disassembly of the valve seat and the valve body, and there is the problem of long disassembly and replacement time. UTILITY MODEL CONTENTS

[0005] The utility model aims at improving the problem that the gas source needs to be disconnected during disassembly of the valve seat and the valve body, and the long disassembly and replacement time, and provides a gas distribution mechanism applied to a valve, which does not need to disconnect the gas source during disassembly of the valve seat and the valve body, and improves the replacement efficiency and safety factor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application relates to a gas distribution mechanism applied to a valve, which comprises a connecting base connected with a valve body and a valve seat, an air inlet cavity and an air outlet cavity are arranged on the connecting base, the air inlet cavity is communicated with an air inlet channel of the valve body and an air inlet channel of the valve seat, the air outlet cavity is communicated with an air outlet channel of the valve body and an air outlet channel of the valve seat, a valve core is movably arranged in the air inlet cavity, a driving surface for driving the valve core to move into the air inlet cavity and open the air inlet cavity is arranged on the valve body, and an elastic element for driving the valve core to move out of the air inlet cavity and close the air inlet cavity is arranged in the air inlet cavity. The gas distribution mechanism is arranged between the valve body and the valve seat and connects the valve body and the valve seat through the connecting base. The valve core is arranged on the connecting base and is used for opening and closing the air inlet channel of the valve seat. The working principle of the technical scheme is as follows: the valve body is arranged on the valve seat through the connecting base, the connecting base is provided with the air inlet cavity and the air outlet cavity, the air inlet cavity is communicated with the air inlet channel of the valve body and the air inlet channel of the valve seat, and the air outlet cavity is communicated with the air outlet channel of the valve body and the air outlet channel of the valve seat. When the valve body is installed on the valve seat, the driving surface on the valve body drives the valve core to move into the air inlet cavity and open the air inlet cavity, so that the air inlet channel of the valve seat and the air inlet channel of the valve body are communicated; when the valve body needs to be replaced, the valve body is dismounted, the driving surface on the valve body does not act on the valve core, the elastic element in the air inlet cavity drives the valve core to move out of the air inlet cavity and close the air inlet cavity, so that the air inlet channel of the valve seat and the air inlet channel of the valve body are closed, the air inlet channel of the valve seat can be closed by normally dismounting the valve body, the gas source does not need to be disconnected when the valve body is replaced, the replacement efficiency is improved, the replacement time is reduced, the gas source in the valve seat is prevented from leaking, and the safety factor of the valve seat and the valve body is improved.

[0008] Preferably, the inner end of the valve core is movably arranged in the air inlet cavity, the outer end of the valve core extends out of the connecting base and is matched with the driving surface on the valve body, and the driving surface is located in the air inlet channel of the valve body. The outer end of the valve core extends into the air inlet channel of the valve body and is matched with the driving surface in the air inlet channel of the valve body, the valve core is driven to open the air inlet cavity when the valve body is installed, so that the air inlet channel of the valve body and the air inlet channel of the valve seat are communicated after the valve body is installed, the gas source does not need to be disconnected in the process, the replacement efficiency is high, and the safety and stability are high.

[0009] Preferably, the valve core is provided with a valve groove, the outer end of the valve groove is communicated with the air inlet channel of the valve body, and the inner end of the valve groove is communicated with the side wall of the valve core. The valve groove is used for communicating the air inlet channel of the valve seat and the air inlet channel of the valve body, the driving surface on the valve body drives the valve core to move into the air inlet cavity when the valve body is installed on the valve seat, the inner end of the valve groove is communicated with the air inlet cavity, so that the air inlet channel of the valve seat and the air inlet channel of the valve body are communicated; when the valve body needs to be replaced, the valve body is dismounted, the driving surface on the valve body does not act on the valve core, the elastic element in the air inlet cavity drives the valve core to move out of the air inlet cavity, the inner end of the valve groove is sealed and matched with the inner wall of the connecting base, and the air inlet cavity is not communicated, so that the air inlet channel of the valve seat and the air inlet channel of the valve body are closed.

[0010] As preferred, a sealing ring is sleeved on the valve core, a sealing surface matched with the sealing ring is arranged in the air inlet cavity, the inner end of the valve groove is located on the side of the sealing ring facing the outer end of the valve core, and the sealing ring is located in the air inlet cavity. The sealing ring is used to improve the air tightness of the air inlet cavity. After the valve body is disassembled, the valve core drives the sealing ring to press tightly on the sealing surface to prevent the gas source in the valve seat from leaking.

[0011] As preferred, one end of the elastic member abuts against the air inlet cavity, and the other end abuts against the inner end of the valve core. The elastic member is used to move the valve core outwardly relative to the air inlet cavity, drive the sealing ring to press tightly on the sealing surface, and prevent the gas source in the valve seat from leaking.

[0012] As preferred, a clamping spring is clamped on the inner wall of the air inlet cavity, and the clamping spring abuts against and limits the elastic member. The clamping spring facilitates the installation and limiting of the valve core and the elastic member.

[0013] As preferred, a valve seat sealing gasket is arranged on the end of the connecting seat connected with the valve seat, and a valve body sealing gasket is arranged on the end of the connecting seat connected with the valve body. The valve seat sealing gasket increases the sealing between the connecting seat and the valve seat, the valve body sealing gasket increases the sealing between the connecting seat and the valve body, and the sealing between the connector and the valve body and the valve seat is improved.

[0014] As preferred, an annular protrusion is arranged on the side surface of the valve body sealing gasket matched with the connecting seat, the annular protrusion is clamped into the connecting seat and sleeved on the valve core. The annular protrusion is used to improve the sealing between the valve core and the connecting seat, and ensure that the sealing effect is still guaranteed during the driving of the valve core.

[0015] As preferred, the number of the connecting seats is plural, the number of the connecting seats corresponds to the valve bodies one by one, and the plurality of connecting seats places the corresponding valve bodies on the same valve seat. When the plurality of valve bodies are connected in parallel on the valve seat, the plurality of connecting seats are used to correspond to the valve bodies one by one, so as to control the air inlet passages on the valve seat corresponding to the valve bodies. When any valve body is replaced, the other valve bodies do not affect the normal work, and the gas source does not need to be disconnected. The replacement efficiency is high, the operation is convenient, and the remaining working conditions are normally operated.

[0016] As preferred, an annular air baffle is sleeved on the elastic member, and the annular air baffle is fixed on the end of the elastic member abutting against the valve core. The annular air baffle is fixedly sleeved on the elastic member, and the annular air baffle is used to ensure that the elastic member can move outwardly relative to the air inlet cavity under the action of the air inlet, and prevent the problem that the performance of the elastic member is reduced and the reset is slow.

[0017] Therefore, the utility model has following beneficial effect: normal dismounting valve body can realize the closure of the air inlet channel of valve seat, does not need to disconnect gas source when replacing valve body, promotes replacement efficiency, reduces replacement time, prevents gas source leakage in valve seat, improves safety factor of valve seat and valve body;In the occasion of multiple valves in parallel, when certain valve body is disassembled and replaced, other parallel valves can not be affected and continue normal work without disconnecting gas source. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of the embodiment two of the utility model.

[0019] Figure 2 is a partial sectional view of the embodiment two of the utility model arranged on valve body and valve seat.

[0020] Figure 3 is a structural schematic view of the embodiment two of the utility model arranged on valve body and valve seat.

[0021] Figure 4 is a sectional view of the embodiment three of the utility model.

[0022] As shown in the figure:

[0023] Connecting seat 1, air inlet cavity 1.1, sealing surface 1.1.1, air outlet cavity 1.2,

[0024] Valve body 2, driving surface 2.1,

[0025] Valve seat 3,

[0026] Valve core 4, valve groove 4.1,

[0027] Elastic member 5, sealing ring 6, snap spring 7, valve seat sealing gasket 8, valve body sealing gasket 9, annular convex 9.1, annular air baffle 10. DETAILED DESCRIPTION

[0028] In order to make the utility model technical scheme embodiment purpose, technical scheme and advantages more clear, the utility model is further described below in combination with the drawings and specific embodiment.

[0029] Embodiment one, as Figure 1 , Figure 2 , Figure 3 , Figure 4The gas distribution mechanism of the valve body 2 and the valve seat 3 shown comprises a connecting seat 1 connecting the valve body 2 and the valve seat 3, the connecting seat 1 is provided with an air inlet cavity 1.1 and an air outlet cavity 1.2, the air inlet cavity 1.1 is communicated with the air inlet passage of the valve body 2 and the air inlet passage of the valve seat 3, the air outlet cavity 1.2 is communicated with the air outlet passage of the valve body 2 and the air outlet passage of the valve seat 3, the valve core 4 is movably arranged in the air inlet cavity 1.1, the valve body 2 is provided with a driving surface 2.1 driving the valve core 4 to move into the air inlet cavity 1.1 and open the air inlet cavity 1.1, and the elastic member 5 is arranged in the air inlet cavity 1.1 to drive the valve core 4 to move out of the air inlet cavity 1.1 and close the air inlet cavity 1.1.

[0030] Most of the existing valves on the market (including but not limited to solenoid valves, air control valves, mechanical valves, etc.) have added hot plug function. The valve comprises a valve seat 3 and a valve body 2, the valve seat 3 is provided with an air inlet passage and an air outlet passage, the valve body 2 is provided with an air inlet passage and an air outlet passage, the valve seat 3 and the valve body 2 are directly connected in the prior art, the air inlet passage of the valve seat 3 is communicated with the air inlet passage of the valve body 2, and the air outlet passage of the valve seat 3 is communicated with the air outlet passage of the valve body 2. When the valve seat 3 and the valve body 2 are disassembled, the air leakage of the valve seat 3 is easy to cause energy loss and safety hazard, and affects the normal work of the valve. The valve seat 3 and the valve body 2 need to be disconnected from the gas source during disassembly, and there is a problem of long disassembly and replacement time. In order to improve the problem that the valve seat 3 and the valve body 2 need to be disconnected from the gas source during disassembly, and the long disassembly and replacement time, a gas distribution mechanism of the valve body 2 and the valve seat 3 is provided, which does not need to be disconnected from the gas source during disassembly of the valve seat 3 and the valve body 2, improves the replacement efficiency and safety factor.

[0031] The gas distribution mechanism of the valve body 2 and the valve seat 3 in the above embodiment is arranged between the valve body 2 and the valve seat 3, and connects the valve body 2 and the valve seat 3 through the connecting seat 1. The connecting seat 1 is provided with the valve core 4 opening and closing the air inlet passage of the valve seat 3. The working principle of the technical solution is as follows: the valve body 2 is arranged on the valve seat 3 through the connecting seat 1, the connecting seat 1 is provided with the air inlet cavity 1.1 and the air outlet cavity 1.2, the air inlet cavity 1.1 is communicated with the air inlet passage of the valve body 2 and the air inlet passage of the valve seat 3, and the air outlet cavity 1.2 is communicated with the air outlet passage of the valve body 2 and the air outlet passage of the valve seat 3. When the valve body 2 is installed on the valve seat 3, the driving surface 2.1 on the valve body 2 drives the valve core 4 to move into the air inlet cavity 1.1 and opens the air inlet cavity 1.1, so that the air inlet passage of the valve seat 3 and the air inlet passage of the valve body 2 are communicated. When the valve body 2 needs to be replaced, the valve body 2 is disassembled, the driving surface 2.1 on the valve body 2 does not act on the valve core 4, the elastic member 5 in the air inlet cavity 1.1 drives the valve core 4 to move out of the air inlet cavity 1.1 and closes the air inlet cavity 1.1, so that the air inlet passage of the valve seat 3 and the air inlet passage of the valve body 2 are closed. The normal disassembly of the valve body 2 can realize the closure of the air inlet passage of the valve seat 3, and the valve body 2 does not need to be disconnected from the gas source during replacement, which improves the replacement efficiency, reduces the replacement time, prevents the gas source in the valve seat 3 from leaking, and improves the safety factor of the valve seat 3 and the valve body 2.

[0032] In example two,Figure 1 、 Figure 2 、 Figure 3 The gas distribution mechanism of a valve body 2 and a valve seat 3 shown in the figure, including a connecting seat 1 connecting the valve body 2 and the valve seat 3, the connecting seat 1 is provided with an air inlet cavity 1.1 and an air outlet cavity 1.2, the air inlet cavity 1.1 is communicated with the air inlet channel of the valve body 2 and the air inlet channel of the valve seat 3, the air outlet cavity 1.2 is communicated with the air outlet channel of the valve body 2 and the air outlet channel of the valve seat 3, a valve core 4 is movably arranged in the air inlet cavity 1.1, the valve body 2 is provided with a driving surface 2.1 driving the valve core 4 to move into the air inlet cavity 1.1 and open the air inlet cavity 1.1, and the air inlet cavity 1.1 is provided with an elastic element 5 driving the valve core 4 to move out of the air inlet cavity 1.1 and close the air inlet cavity 1.1.

[0033] In the technical solution, as shown in Figure 1 、 Figure 2 、 Figure 3 The inner end of the valve core 4 is movably arranged in the air inlet cavity 1.1, the outer end of the valve core 4 extends out of the connecting seat 1 and cooperates with the driving surface 2.1 on the valve body 2, and the driving surface 2.1 is located in the air inlet channel of the valve body 2. The outer end of the valve core 4 extends into the air inlet channel of the valve body 2 and cooperates with the driving surface 2.1 in the air inlet channel of the valve body 2, and the valve core 4 is driven to open the air inlet cavity 1.1 when the valve body 2 is installed, so that the air inlet channel of the valve body 2 and the air inlet channel of the valve seat 3 are communicated after the valve body 2 is installed, and the process does not need to disconnect the gas source, so that the replacement efficiency is high and the safety and stability are high.

[0034] Specifically, the valve core 4 is provided with a valve groove 4.1, the outer end of the valve groove 4.1 is communicated with the air inlet channel of the valve body 2, and the inner end of the valve groove 4.1 is communicated with the side wall of the valve core 4. The valve groove 4.1 is used for communicating the air inlet channel of the valve seat 3 and the air inlet channel of the valve body 2, when the valve body 2 is installed on the valve seat 3, the driving surface 2.1 on the valve body 2 drives the valve core 4 to move into the air inlet cavity 1.1, the inner end of the valve groove 4.1 is communicated with the air inlet cavity 1.1, so that the air inlet channel of the valve seat 3 and the air inlet channel of the valve body 2 are communicated; when the valve body 2 needs to be replaced, the valve body 2 is disassembled, the driving surface 2.1 on the valve body 2 does not act on the valve core 4, the elastic element 5 in the air inlet cavity 1.1 drives the valve core 4 to move out of the air inlet cavity 1.1, the inner end of the valve groove 4.1 is sealingly cooperated with the inner wall of the connecting seat 1, and the air inlet cavity 1.1 is not communicated, so that the air inlet channel of the valve seat 3 and the air inlet channel of the valve body 2 are closed.

[0035] Further requirements for the valve core 4 are that the valve core 4 is sleeved with a sealing ring 6, the air inlet cavity 1.1 is provided with a sealing surface 1.1.1 cooperating with the sealing ring 6, the inner end of the valve groove 4.1 is located on the side of the sealing ring 6 facing the outer end of the valve core 4, and the sealing ring 6 is located in the air inlet cavity 1.1. The sealing ring 6 is used for improving the air tightness of the air inlet cavity 1.1, after the valve body 2 is disassembled, the valve core 4 drives the sealing ring 6 to press tightly on the sealing surface 1.1.1, so as to prevent the gas in the valve seat 3 from leaking.

[0036] Further, one end of the elastic member 5 is abutted against the air inlet cavity 1.1, and the other end is abutted against the inner end of the valve core 4. The elastic member 5 is used to move the valve core 4 towards the outside of the air inlet cavity 1.1, drive the sealing ring 6 to be pressed against the sealing surface 1.1.1, and prevent the gas source in the valve seat 3 from leaking.

[0037] Further, the inner wall of the air inlet cavity 1.1 is provided with a snap spring 7, and the snap spring 7 is abutted against and limits the elastic member 5. The snap spring 7 facilitates the installation and limiting of the valve core 4 and the elastic member 5.

[0038] Further, one end of the connecting seat 1 connected with the valve seat 3 is provided with a valve seat sealing gasket 8, and the other end of the connecting seat 1 connected with the valve body 2 is provided with a valve body sealing gasket 9. The valve seat sealing gasket 8 increases the sealing between the connecting seat 1 and the valve seat 3, the valve body sealing gasket 9 increases the sealing between the connecting seat 1 and the valve body 2, and the sealing between the connector and the valve body 2 and the valve seat 3 is improved.

[0039] Further, one side of the valve body sealing gasket 9 matched with the connecting seat 1 is provided with an annular protrusion 9.1, the annular protrusion 9.1 is clamped into the connecting seat 1 and is sleeved on the valve core 4. The annular protrusion 9.1 is used to improve the sealing between the valve core 4 and the connecting seat 1, and to ensure that the sealing effect is still guaranteed during the driving of the valve core 4.

[0040] Further, when a plurality of valve bodies 2 are provided on the valve seat 3, the number of the connecting seats 1 is also a plurality, and the number of the connecting seats 1 corresponds to the valve bodies 2 one by one, and the plurality of connecting seats 1 places the corresponding valve bodies 2 on the same valve seat 3. When the plurality of valve bodies 2 are connected in parallel on the valve seat 3, a plurality of connecting seats 1 are used to correspond to the valve bodies 2, so as to control the air inlet passages on the valve seat 3 corresponding to the valve bodies 2. When any valve body 2 is replaced, the other valve bodies 2 do not affect the normal work, and there is no need to disconnect the gas source, and the replacement efficiency is high, the operation is convenient, and the remaining working conditions are normal.

[0041] As shown in FIG. 3, a valve body 2 and a valve seat 3 of a gas distribution mechanism according to the third embodiment of the present application are provided. Figure 4 The valve body 2 and the valve seat 3 of the gas distribution mechanism according to the third embodiment of the present application are provided.

[0042] In the embodiment, the valve body 2 and the valve seat 3 of the gas distribution mechanism according to the third embodiment of the present application are provided. Figure 4As shown, the elastic member 5 is sleeved with an annular air baffle 10, and the annular air baffle 10 is fixed on one end of the elastic member 5 abutting against the valve core 4. The annular air baffle 10 is fixedly sleeved on the elastic member 5, and the annular air baffle 10 is used to ensure that the elastic member 5 can move outwardly to the air inlet cavity 1.1 under the action of the air inlet, thereby preventing the problem of slow performance reduction and reset of the elastic member 5.

[0043] Further optimization is made to the valve core 4. The inner end of the valve core 4 is arranged to move in the air inlet cavity 1.1, and the outer end of the valve core 4 extends out of the connecting seat 1 and cooperates with the driving surface 2.1 on the valve body 2, which is located in the air inlet passage of the valve body 2. The outer end of the valve core 4 extends into the air inlet passage of the valve body 2 and cooperates with the driving surface 2.1 in the air inlet passage of the valve body 2. The valve core 4 is driven to open the air inlet cavity 1.1 when the valve body 2 is installed, so that the air inlet passage of the valve body 2 and the air inlet passage of the valve seat 3 are communicated after the valve body 2 is installed. The process does not need to disconnect the air source, and the replacement efficiency is high, and the safety and stability are high.

[0044] Further optimization is made to the valve core 4. The valve core 4 is provided with a valve groove 4.1, the outer end of the valve groove 4.1 is communicated with the air inlet passage of the valve body 2, and the inner end of the valve groove 4.1 is communicated with the side wall of the valve core 4. The valve groove 4.1 is used to communicate the air inlet passage of the valve seat 3 and the air inlet passage of the valve body 2. When the valve body 2 is installed on the valve seat 3, the driving surface 2.1 on the valve body 2 drives the valve core 4 to move into the air inlet cavity 1.1, and the inner end of the valve groove 4.1 is communicated with the air inlet cavity 1.1, so that the air inlet passage of the valve seat 3 and the air inlet passage of the valve body 2 are communicated. When the valve body 2 needs to be replaced, the valve body 2 is disassembled, the driving surface 2.1 on the valve body 2 does not act on the valve core 4, the elastic member 5 in the air inlet cavity 1.1 drives the valve core 4 to move outwardly to the air inlet cavity 1.1, and the inner end of the valve groove 4.1 is sealingly cooperated with the inner wall of the connecting seat 1, and is not communicated with the air inlet cavity 1.1, so that the air inlet passage of the valve seat 3 and the air inlet passage of the valve body 2 are closed.

[0045] Further requirements are made to the valve core 4. The valve core 4 is sleeved with a sealing ring 6, the air inlet cavity 1.1 is provided with a sealing surface 1.1.1 cooperated with the sealing ring 6, the inner end of the valve groove 4.1 is located on one side of the sealing ring 6 facing the outer end of the valve core 4, and the sealing ring 6 is located in the air inlet cavity 1.1. The sealing ring 6 is used to improve the air tightness of the air inlet cavity 1.1. After the valve body 2 is disassembled, the valve core 4 drives the sealing ring 6 to press tightly on the sealing surface 1.1.1, so as to prevent the air source in the valve seat 3 from leaking.

[0046] Further requirements are made to the elastic member 5. One end of the elastic member 5 abuts against the air inlet cavity 1.1, and the other end abuts against the inner end of the valve core 4. The elastic member 5 is used to move the valve core 4 outwardly to the air inlet cavity 1.1, drive the sealing ring 6 to press tightly on the sealing surface 1.1.1, and prevent the air source in the valve seat 3 from leaking.

[0047] Further requirements for the air inlet cavity 1.1 are that a snap spring 7 is arranged on the inner wall of the air inlet cavity 1.1, and the snap spring 7 abuts against and limits the elastic element 5. The snap spring 7 facilitates the installation and limitation of the valve core 4 and the elastic element 5.

[0048] Further requirements for the connecting seat 1 are that a valve seat sealing gasket 8 is arranged on the end of the connecting seat 1 connected with the valve seat 3, and a valve body sealing gasket 9 is arranged on the end of the connecting seat 1 connected with the valve body 2. The valve seat sealing gasket 8 increases the sealing between the connecting seat 1 and the valve seat 3, the valve body sealing gasket 9 increases the sealing between the connecting seat 1 and the valve body 2, and the sealing between the connector and the valve body 2 and the valve seat 3 is improved.

[0049] Further requirements for the valve body sealing gasket 9 are that an annular protrusion 9.1 is arranged on the side surface of the valve body sealing gasket 9 matched with the connecting seat 1, the annular protrusion 9.1 is clamped into the connecting seat 1 and is sleeved on the valve core 4. The annular protrusion 9.1 is used to improve the sealing between the valve core 4 and the connecting seat 1, and to ensure that the valve core 4 still guarantees the sealing effect during the driving process.

[0050] Further requirements for the connecting seat 1 are that when a plurality of valve bodies 2 are arranged on the valve seat 3, the number of the connecting seats 1 is also a plurality, the number of the connecting seats 1 corresponds to the number of the valve bodies 2 one by one, and the plurality of connecting seats 1 place the corresponding valve bodies 2 on the same valve seat 3. When the plurality of valve bodies 2 are connected in parallel on the valve seat 3, a plurality of connecting seats 1 are used to correspond to the valve bodies 2 one by one, so as to control the air inlet passages on the valve seat 3 corresponding to the valve bodies 2. When any valve body 2 is replaced, the other valve bodies 2 do not affect the normal work, and the gas source does not need to be disconnected, the replacement efficiency is high, the operation is convenient, and the remaining working conditions are normally operated.

[0051] The above-described specific embodiments are only the preferred embodiments of the utility model, and do not limit the specific implementation range of the utility model. Any equivalent changes made according to the shape and structure of the utility model should be included in the protection range of the utility model.

Claims

1. A gas distribution mechanism for use in a valve, characterized by, The connecting seat is connected with the valve body and the valve seat, and is provided with an air inlet cavity and an air outlet cavity.

2. A gas distribution mechanism for use in a valve according to claim 1, wherein, The inner end of the valve core is movably arranged in the air inlet cavity, and the outer end of the valve core extends out of the connecting seat and cooperates with the driving surface on the valve body.

3. A gas distribution mechanism for use in a valve according to claim 2, wherein, The valve core is provided with a valve groove, the outer end of the valve groove is communicated with the air inlet channel of the valve body, and the inner end of the valve groove is communicated with the side wall of the valve core.

4. A gas distribution mechanism for use in a valve according to claim 3, wherein, The valve core is provided with a sealing ring, the air inlet cavity is provided with a sealing surface matched with the sealing ring, the inner end of the valve groove is located on the side of the sealing ring facing the outer end of the valve core, and the sealing ring is located in the air inlet cavity.

5. A gas distribution mechanism for use in a valve according to claim 2 or 3 or 4, characterised in that, One end of the elastic member abuts against the air inlet cavity, and the other end abuts against the inner end of the valve core.

6. A gas distribution mechanism for use in a valve according to claim 5, wherein, A clamping spring is clamped on the inner wall of the air inlet cavity, and the clamping spring abuts against and limits the elastic member.

7. A gas distribution mechanism for use in a valve according to claim 1 or 2 or 3 or 4, wherein, One end of the elastic member abuts against the air inlet cavity, and the other end abuts against the inner end of the valve core.

8. A gas distribution mechanism for use in a valve according to claim 7, wherein, The connecting seat is connected with the valve body and the valve seat, and is provided with an air inlet cavity and an air outlet cavity.

9. A gas distribution mechanism for use in a valve according to claim 1 or 2 or 3 or 4, wherein, The valve body sealing gasket is provided with an annular protrusion on one side surface matched with the connecting seat, the annular protrusion is clamped into the connecting seat and sleeved on the valve core.

10. A gas distribution mechanism for use in a valve as defined in claim 5, wherein, The number of the connecting seats is plural, and the number of the connecting seats corresponds to the valve body one by one. The elastic member is sleeved with an annular air baffle, and the annular air baffle is fixed on one end of the elastic member abutting against the valve core.

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