Valve assembly

Abstract

This application provides a valve assembly. It includes a housing, a valve body, and a locking clip. The housing includes a main body portion defining a cavity and a connecting portion. The connecting portion is connected to the main body portion and defines a connection channel communicating with the cavity. The connecting portion has a locking channel communicating with the connection channel. The connection channel is used to receive a connector having a receiving groove. The valve body is disposed in the cavity. The locking clip includes a clamping arm configured to move between a clearance position and a blocking position. During the installation of the locking clip to the connecting portion, when the connector is inserted into the connection channel and pushes the clamping arm out of the connection channel, the clamping arm is in the clearance position; and when the clamping arm at least partially passes through the locking channel and is located in the connection channel, the clamping arm is in the blocking position. The valve assembly of this application can be quickly connected to a connector, and has advantages such as simple connection and disassembly operations, fewer parts, and stable connection.

Description

Technical Field

[0001] This application relates to the field of valve assemblies. Background Technology

[0002] Existing valve assemblies are connected to plug-in connectors via threads. This connection method requires the plug-in connectors to have predetermined threads and requires rotation to connect, making the connection inconvenient. Utility Model Content

[0003] Through in-depth research, the inventors of this application discovered that in the prior art, valve assemblies are connected to plug-in connectors via threads. When the plug-in connector is not threaded, an adapter is required to connect the valve assembly to the plug-in connector. This not only increases the overall length of the system, raising procurement and installation costs, but also makes maintenance difficult.

[0004] To address the aforementioned technical problems, this application provides a valve assembly for receiving a connector. The valve assembly includes a housing, a valve body, and a locking clip. The housing includes a main body portion and a connecting portion. The main body portion defines a cavity. The connecting portion is connected to the main body portion and defines a connection channel communicating with the cavity, and the connecting portion has a locking channel communicating with the connection channel for receiving the connector. The valve body is disposed in the cavity. The locking clip can be detachably mounted to the end of the connecting portion away from the main body portion, thereby locking the connector to the housing or allowing the connector to be unlocked from the housing. The locking clip includes a clamping arm for locking the connector to the housing, the clamping arm being configured to move between a clearance position and a blocking position, wherein, during the installation of the locking clip to the connecting portion, when the connector is inserted into the connection channel and the clamping arm is pushed out of the connection channel, the clamping arm is in the clearance position; and when the clamping arm at least partially passes through the locking channel and is located in the connection channel, the clamping arm is in the blocking position.

[0005] According to certain specific embodiments, the connection channel is used to receive a connector having a receiving slot, and the clamping arm is configured to move from the blocking position to the yielding position under the action of the connector, and return from the yielding position to the blocking position when the receiving slot of the connector aligns with the locking channel, so as to lock the connector in the connection channel.

[0006] According to certain specific embodiments, the locking clamp includes a base and two clamping arms connected through the base and capable of deflecting relative to the base to move between the avoidance position and the blocking position.

[0007] According to certain specific embodiments, the housing is integrally made of a first material, and the locking clip is integrally made of a second material, which is different from the first material.

[0008] According to certain specific embodiments, the connecting part of the housing is a tubular structure disposed on the main body.

[0009] According to certain specific embodiments, the valve body is provided with a valve body channel that penetrates the valve body. The valve body channel forms a channel opening on the surface of the valve body. The valve body can rotate relative to the housing to switch between an open position and a closed position. When the valve body is in the open position, the channel opening of the valve body channel is aligned with the connecting channel to connect the plug-in to the valve body channel. And when the valve body is in the closed position, the channel opening of the valve body channel is misaligned with the connecting channel to disconnect the plug-in from the valve body channel.

[0010] According to certain specific embodiments, the valve assembly further includes a channel sealing ring located between the valve body and the housing, and circumferentially offset from the channel opening of the valve body channel, so as to surround the connecting channel when the valve body is in the closed position, thereby sealing the connecting channel through the valve body.

[0011] According to certain specific embodiments, the valve body is provided with a channel sealing groove, and the channel sealing ring is accommodated in the channel sealing groove.

[0012] In some specific embodiments, the housing has an opening through which the valve body enters the cavity. The valve assembly also includes a cover that can close the opening and is connected to the housing.

[0013] According to certain specific embodiments, the valve assembly further includes an opening sealing ring disposed between the valve body and the housing to seal the opening.

[0014] Compared with existing technologies, the valve assembly provided in this application can be quickly connected to the connector, and has the advantages of simple connection and disassembly operations, fewer parts, and stable connection. Specifically, the pipe of the valve assembly of this application is used to receive the connector, and the clamp can clamp the pipe and connector of the valve assembly, thereby quickly connecting the two. When disassembly is required, simply remove the clamp and pull out the connector for quick removal.

[0015] Furthermore, the housing of the valve assembly of this application is integrally made of a first material. The first material is made of PPS and GF40, which has higher pressure resistance and lighter weight than metal, thus enabling its application in a wider range of pipe and valve connections.

[0016] Furthermore, the channel sealing ring of this application has a simple structure and good sealing performance. Specifically, the channel sealing ring of this application includes a sealing ring body, a first protrusion, and a second protrusion. The first and second protrusions ensure that the channel sealing ring has a certain holding force with the valve body, thereby holding it in the valve body, while also giving the channel sealing ring a deformable ability to adapt to the compression during valve body rotation. Attached Figure Description

[0017] The features and advantages of this application can be better understood by reading the following detailed description with reference to the accompanying drawings, in which the same reference numerals denote the same parts, wherein: Figure 1 This is a perspective view of the valve assembly of this application; Figure 2 Is it like this? Figure 1 The exploded view of the valve assembly shown; Figure 3 Is it like this? Figure 2 A perspective view of the housing and the first clamp shown; Figure 4 Is it like this? Figure 2 The diagram shows a three-dimensional view of the valve body.

[0018] Main Identification Description Housing 102; First locking clip 111; Second locking clip 112; First connecting channel 121; Second connecting channel 122; Cover 200; Valve body 201; Main body 202; First connecting part 204; Second connecting part 205; First connecting part sealing ring 206; Second connecting part sealing ring 207; Cavity 212; Opening 214; Channel sealing ring 222; Opening sealing ring 224; Valve body channel 232; First channel opening 234; Locking channel 302; Base 322; First clamping arm 323; Second clamping arm 324; First foot 332; Second foot 334; Channel sealing groove 402; Valve body surface 404. Detailed Implementation

[0019] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that in the following drawings, the same components are referred to by the same reference numerals.

[0020] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although terms indicating direction, such as "upper," "lower," "left," "right," "inner," and "outer," are used herein to describe various exemplary structural portions and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed herein can be arranged in different orientations, these terms indicating direction are illustrative only and should not be considered limiting.

[0021] Figure 1 This is a perspective view of the valve assembly of this application. Figure 1 As shown, the valve assembly includes a housing 102, a first locking clip 111, and a second locking clip 112. The housing 102 defines a first connection channel 121 and a second connection channel 122 for receiving a first connector (not shown) and a second connector (not shown). The first locking clip 111 is detachably mounted to the housing 102 to lock the first connector to the housing 102 or allow the first connector to unlock from the housing 102. The second locking clip 112 is detachably mounted to the housing 102 to lock the second connector to the housing 102 or allow the second connector to unlock from the housing 102. More specifically, the first locking clip 111 can clamp the housing 102 and the first connector, and the second locking clip 112 can clamp the housing 102 and the second connector, thereby enabling quick connection of the valve assembly and the connectors. As an example, the first and second connectors are pipes, each defining a connector channel.

[0022] Figure 2 Is it like this? Figure 1 An exploded view of the valve assembly shown. Figure 2As shown, the valve assembly also includes a cover 200, a valve body 201, an opening sealing ring 224, a first connecting portion sealing ring 206, and a second connecting portion sealing ring 207. The housing 102 includes a main body 202, a first connecting portion 204, and a second connecting portion 205. The main body 202 is generally a cylinder with an upper opening. Specifically, the main body 202 defines a cavity 212 and has an opening 214 at the top. The cavity 212 has a valve central axis X in the vertical direction. The valve body 201 can enter the cavity 212 through the opening 214 and is accommodated therein. The cover 200 is configured to connect to the valve body 201 and cover the opening 214. The opening sealing ring 224 is disposed between the main body 202 and the valve body 201 and is configured to seal the main body 202 and the valve body 201 along the valve central axis X, thereby sealing the opening 214. The first connecting portion 204 and the second connecting portion 205 are tubular structures, such as round tubes, disposed on the main body portion 202. The first connecting portion 204 and the second connecting portion 205 are connected to the main body portion 202 and are disposed on opposite sides of the main body portion 202. The first connecting portion 204 and the second connecting portion 205 have a connecting central axis Y along the front-rear direction. The first connecting portion 204 defines a first connecting channel 121. The second connecting portion 205 defines a second connecting channel 122. Both the first connecting channel 121 and the second connecting channel 122 communicate with the cavity 212. The first connecting portion sealing ring 206 and the second connecting portion sealing ring 207 are approximately annular and are respectively disposed in the first connecting channel 121 and the second connecting channel 122. When the first insert is received in the first connecting portion 204, the first connecting portion sealing ring 206 is located between the first insert and the first connecting portion 204, thereby forming a seal. When the second connector is received in the second connection portion 205, the second connection portion sealing ring 207 is located between the second connector and the second connection portion 205, thereby forming a seal.

[0023] It should be noted that although each of the first connecting part 204 and the second connecting part 205 in the embodiments of this application is a circular pipe (i.e., the cross-section of the pipe is circular), pipes of other shapes are also within the scope of protection of this application.

[0024] It should also be noted that although the first connecting part 204 and the second connecting part 205 are formed extending along the connecting central axis Y in the embodiments of this application, the first connecting part 204 and / or the second connecting part 205 being a bend or other pipe are also within the protection scope of this application.

[0025] It should also be noted that although the valve assembly in the embodiments of this application includes a first connecting portion 204 and a second connecting portion 205, valve assemblies including at least one connecting portion are all within the protection scope of this application. Correspondingly, although the valve assembly in the embodiments of this application includes a first locking clip 111 and a second locking clip 112, valve assemblies including at least one locking clip corresponding to at least one connecting portion are all within the protection scope of this application.

[0026] like Figure 2 As shown, the valve body 201 is generally cylindrical and coaxially arranged with the main body 202. The valve body 201 is rotatable relative to the housing 102 about the valve's central axis X. A valve body channel 232 is provided through the valve body 201. The valve body channel 232 forms a first channel opening 234 and a second channel opening on the surface of the valve body 201. The valve body 201 is rotatable relative to the housing 102 and has an open position and a closed position. When the valve body 201 is in the open position, the valve body channel 232 is aligned with the first connecting channel 121 and the second connecting channel 122. In other words, the two channel openings on the surface of the valve body 201 (i.e., the first channel opening 234 and the second channel opening) are aligned with the first connecting channel 121 and the second connecting channel 122, respectively, allowing fluid to enter the valve body channel 232 through the first connecting channel 121 and then flow out through the second connecting channel 122. When the valve body 201 is in the closed position, the valve body channel 232 is offset from the first connecting channel 121 and the second connecting channel 122. In other words, the two channel openings on the surface of the valve body 201 (i.e., the first channel opening 234 and the second channel opening) are offset from the first connecting channel 121 and the second connecting channel 122, so that the fluid passing through the first connecting channel 121 is blocked by the valve body 201 and cannot enter the second connecting channel 122.

[0027] like Figure 2 As shown, the valve assembly also includes a channel seal ring 222. The channel seal ring 222 is located between the valve body 201 and the housing 102, and is configured such that when the valve body 201 is in the open position, the channel seal ring 222 is offset from the communication channels (i.e., the first connection channel 121 and the second connection channel 122), and when the valve body 201 is in the closed position, the channel seal ring 222 encloses the communication channels, thereby achieving a seal between the valve body 201 and the housing 102 in the closed position.

[0028] Figure 3 Is it like this? Figure 2 A perspective view of the housing 102 and the first locking clip 111 shown. Figure 3As shown, the first connecting portion 204 and the second connecting portion 205 of the housing 102 have a connecting central axis Y. The main body portion 202 of the housing 102 has a valve central axis X. The connecting central axis Y is approximately perpendicular to the valve central axis X. The first connecting portion 204 and the second connecting portion 205 have the same structure and are arranged approximately symmetrically about the valve central axis X. The first locking clip 111 and the second locking clip 112 have the same structure. The specific structures of the first connecting portion 204 and the second connecting portion 205 will be described below with reference to the first connecting portion 204, and the specific structures of the first locking clip 111 and the second locking clip 112 will be described with reference to the first locking clip 111.

[0029] like Figure 3 As shown, the first connecting portion 204 is provided with two locking channels 302 disposed opposite to each other. The locking channels 302 are respectively disposed on opposite sides of the connecting central axis X of the first connecting portion 204. The locking channels 302 penetrate through the wall of the first connecting portion 204 and communicate with the first connecting channel 121 defined by the first connecting portion 204. The locking channels 302 are configured to receive a portion of the first locking clip 111. A connector (not shown) can be inserted into the first connecting portion 204, and the connector has two receiving slots (not shown). When the connector is inserted into the first connecting portion 204 and the receiving slots are aligned with the locking channels 302, the connector is installed in place with the first connecting portion 204. At this time, the receiving slots of the connector communicate with the locking channels 302, and at least a portion of the first locking clip 111 passes through the locking channels 302 and enters the receiving slots, thereby installing the first locking clip 111 to the end of the first connecting portion 204 away from the main body 202, so that the valve assembly can be quickly connected to the connector. When the first locking clip 111 is removed from the receiving slot, the first locking clip 111 allows for quick disassembly of the valve assembly from the connector.

[0030] like Figure 3As shown, the first locking clamp 111 includes a base 322, a first clamping arm 323 and a second clamping arm 324, a first foot 332 and a second foot 334. The base 322 is generally arc-shaped and matches the outer wall of the first connecting portion 204. The first clamping arm 323 and the second clamping arm 324 are disposed on the base 322 and located on opposite sides of the base 322, thus being continuous through the base 322. The first clamping arm 323 and the second clamping arm 324 are deflectable relative to the base 322, having a clearance position and a blocking position, and are capable of moving between the clearance position and the blocking position. When the first clamping arm 323 and the second clamping arm 324 are in the blocking position, the distance between the first clamping arm 323 and the second clamping arm 324 is a first distance. When the first clamping arm 323 and the second clamping arm 324 are in the clearance position, the distance between the first clamping arm 323 and the second clamping arm 324 is a second distance. The second distance is greater than the first distance. More specifically, during the installation of the first locking clip 111 to the first connecting portion 204, when the first connecting channel 121 receives the connector but the locking channel 302 is not aligned with the receiving slot, the connector pushes the first clamping arm 323 and the second clamping arm 324 out of the first connecting channel 121, so that the first clamping arm 323 and the second clamping arm 324 are in a clearance position. When the first connecting channel 121 receives the connector and the locking channel 302 is aligned with the receiving slot, the first clamping arm 323 and the second clamping arm 324 at least partially pass through the locking channel 302 and are located in the first connecting channel 121 and the receiving slot, so that the first clamping arm 323 and the second clamping arm 324 are in a blocking position. Furthermore, the first clamping arm 323 and the second clamping arm 324 are configured to move from a blocking position to a yielding position under the action of the connector, and return from the yielding position to the blocking position when the connector is installed in place with the first connecting portion 204 (i.e., the receiving slot of the connector is aligned with the locking channel 302 of the first connecting portion 204) to lock the connector in the first connecting channel 121. More specifically, after the receiving slot of the connector is aligned with the locking channel 302 of the first connecting portion 204, and the first clamping arm 323 and the second clamping arm 324 are in the yielding position, the first clamping arm 323 and the second clamping arm 324 can move relative to each other, thereby at least partially passing through the locking channel 302 and entering the receiving slot and the first connecting channel 121. In the Y direction of the connection center axis, a portion of the first clamping arm 323 located in the receiving slot abuts against the walls on both sides of the receiving slot and the walls on both sides of the locking channel 302, thereby preventing the connector and the first connecting portion 204 from disengaging along the Y direction of the connection center axis. The first foot 332 and the second foot 334 are respectively connected to the free ends of the first clamping arm 323 and the second clamping arm 324 and extend in opposite directions along the connecting central axis Y, thereby enabling the first foot 332 and the second foot 334 to prevent the first clamping arm 111 from moving in a direction perpendicular to the connecting central axis Y and the central axis X when the first locking clamp 111 is connected to the first connecting part 204 (e.g., as shown in the image). Figure 3(As shown in the front-to-back direction) movement. When it is necessary to disassemble the connector and the first connecting part 204, the first locking clamp 111 is moved upward along the central axis X. The first clamping arm 323 and the second clamping arm 324 of the first locking clamp 111 move from the blocking position to the avoidance position under the action of the connector, and exit the receiving slot and locking channel 302. After exiting from the receiving slot and locking channel 302, the first clamping arm 323 and the second clamping arm 324 are in the blocking position. The connector and the first connecting part 204 can be disengaged along the connection central axis Y.

[0031] In this application, the housing 102 is integrally made of a first material. The cover and locking clip are integrally made of a second material. The second material is different from the first material. The first material is made of PPS and GF40. PPS is polyphenylene sulfide. GF40 is PA66 with 40% glass fiber. The second material is made of PA66 and GF30. PA66 is a polymeric polyamide resin. GF30 is PA66 with 30% glass fiber.

[0032] Figure 4 Is it like this? Figure 2 The diagram shows a perspective view of the valve body 201. Figure 4 As shown, the valve body 201 is generally cylindrical. A valve body channel 232 is provided through the valve body 201. In this application, the cross-section of the valve body channel 232 is circular, matching the pipes (i.e., the first connecting portion and the second connecting portion). The valve body channel 232 forms opposing first channel openings 234 and second channel openings on the surface of the valve body 201. When the first channel opening 234 and the second channel opening are aligned with the connecting channels of the two pipes, the valve body 201 is in the open position, and the connector channel in the connector communicates with the valve body channel 232. When the first channel opening 234 and the second channel opening are misaligned with the connecting channels of the two pipes (i.e., they are not aligned), the valve body 201 is in the closed position, and the connector channel in the connector is disconnected from the valve body channel 232.

[0033] like Figure 4As shown, the valve body 201 is provided with a channel sealing groove 402. The channel sealing groove 402 is formed by recessing inward from the surface of the valve body 201. A channel sealing ring 222 is accommodated in the channel sealing groove 402. The channel sealing groove 402 forms a ring shape on the surface of the valve body 201, thereby enclosing a closed section of the valve body surface 404. The circumferential dimension of the valve body surface 404 is slightly larger than the area of ​​the connecting channels (i.e., the first connecting channel 121 and the second connecting channel 122) (e.g., the area of ​​the first channel opening 234), and the channel sealing ring 222 is circumferentially offset from the first channel opening 234 and the second channel opening, so that when the valve body 201 is in the closed position, the valve body surface 404 is approximately aligned with the connecting channels, and the channel sealing ring 222 encloses the connecting channels. Thus, the channel sealing ring 222 achieves a seal between the valve body 201 and the housing 102. In other words, because the channel seal ring 222 seals the connecting passage of the pipe, fluid cannot pass through the valve body passage 232 on the valve body 201. In this application, the valve body 201 is made of PP and GF40, and the channel seal ring 222 is made of EPDM. PP is polypropylene, and EPDM is ethylene propylene rubber.

[0034] In the prior art, the inventors of this application discovered that existing valve assemblies are made of metal with threads, and are connected to a connector via these threads. This connection method requires the connector to have predetermined threads and requires rotation for connection, thus making the connection inconvenient.

[0035] The valve assembly of this application can be quickly connected to the connector, offering advantages such as simple connection and disassembly operations, fewer components, and stable connection. Specifically, the pipe of the valve assembly is used to receive the connector, and the clamp can hold the connection part of the valve assembly and the connector, thereby quickly connecting the two. When disassembly is required, simply remove the clamp and pull out the connector for quick removal.

[0036] Furthermore, the housing of the valve assembly of this application is integrally made of a first material. The first material is made of PPS and GF40, which has higher pressure resistance and lighter weight than metal, thus enabling its application in a wider range of pipe and valve connections.

[0037] Furthermore, the channel sealing ring of this application has a simple structure and good sealing performance. Specifically, the channel sealing ring of this application includes a sealing ring body, a first protrusion, and a second protrusion. The first and second protrusions ensure that the channel sealing ring has a certain holding force with the valve body, thereby holding it in the valve body, while also giving the channel sealing ring a deformable ability to adapt to the compression during valve body rotation.

[0038] Although this disclosure has been described in conjunction with examples of the embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents, whether known or currently or soon to be foreseen, will likely be apparent to those skilled in the art. Furthermore, the technical effects and / or technical problems described herein are exemplary and not limiting; therefore, the disclosures herein may be used to solve other technical problems and have other technical effects and / or can solve other technical problems. Accordingly, the examples of embodiments of this disclosure as set forth above are intended to be illustrative and not limiting. Various changes may be made without departing from the spirit or scope of this disclosure. Therefore, this disclosure is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents.

Claims

1. A valve assembly for receiving a spigot, characterised in that, The valve assembly includes: Housing (102), the housing (102) comprising: Main body (202), which defines a cavity (212); and A connecting portion (204, 205) is connected to the main body portion (202) and defines a connecting channel (121, 122) communicating with the cavity (212). The connecting portion (204, 205) is provided with a locking channel (302) communicating with the connecting channel (121, 122). The connecting channel (121, 122) is used to receive the plug-in component. Valve body (201), said valve body (201) being disposed in said cavity (212); and A locking clip (111, 112) is detachably mounted to the end of the connector (204, 205) away from the main body (202) to lock the connector to the housing (102) or allow the connector to unlock from the housing (102). The locking clip (111, 112) includes clamping arms (323, 324) having a yielding position and a blocking position, and is configured to move between the yielding position and the blocking position. During the installation of the connector (111, 112) into the connecting part (204, 205), when the connector is inserted into the connecting channel (121, 122) and the clamping arm (323, 324) is pushed out of the connecting channel (121, 122), the clamping arm (323, 324) is in the avoidance position; and when the clamping arm (323, 324) passes at least partially through the locking channel (302) and is located in the connecting channel (121, 122), the clamping arm (323, 324) is in the blocking position.

2. The valve assembly according to claim 1, characterized in that: The connecting channels (121, 122) are used to receive a connector with a receiving slot, and the clamping arms (323, 324) are configured to move from the blocking position to the yielding position under the action of the connector, and return from the yielding position to the blocking position when the receiving slot of the connector is aligned with the locking channel (302) to lock the connector in the connecting channels (121, 122).

3. The valve assembly according to claim 2, characterized in that: The locking clamp (111, 112) includes a base (322) and two clamping arms (323, 324) connected by the base (322) and capable of deflecting relative to the base (322) to move between the avoidance position and the blocking position.

4. The valve assembly according to claim 3, characterized in that: The housing (102) is integrally made of a first material, and the locking clips (111, 112) are integrally made of a second material, which is different from the first material.

5. The valve assembly according to claim 1, characterized in that: The connecting parts (204, 205) of the housing (102) are tubular structures provided on the main body (202).

6. The valve assembly according to claim 2, characterized in that: The valve body (201) is provided with a valve body channel (232) that passes through the valve body (201). The valve body channel (232) forms a channel opening (234) on the surface of the valve body (201). The valve body (201) can rotate relative to the housing (102) to switch between an open position and a closed position. When the valve body (201) is in the open position, the channel opening (234) of the valve body channel (232) and the connecting channel (121, 122) are aligned to connect the plug-in to the valve body channel (232). And when the valve body (201) is in the closed position, the channel opening (234) of the valve body channel (232) and the connecting channel (121, 122) are misaligned to disconnect the plug-in from the valve body channel (232).

7. The valve assembly according to claim 6, characterized in that: The valve assembly further includes a channel sealing ring (222) located between the valve body (201) and the housing (102), and circumferentially offset from the channel opening (234) of the valve body channel (232), so that when the valve body (201) is in the closed position, the channel sealing ring (222) surrounds the connecting channel (121,122) and seals the connecting channel (121,122) through the valve body (201).

8. The valve assembly according to claim 7, characterized in that: The valve body (201) is provided with a channel sealing groove (402), and the channel sealing ring (222) is accommodated in the channel sealing groove (402).

9. The valve assembly according to claim 5, characterized in that: The housing (102) has an opening (214) through which the valve body (201) can enter the cavity (212). The valve assembly also includes a cover (200) that can close the opening (214) and is connected to the housing (102).

10. The valve assembly of claim 9, wherein, Also includes: An opening sealing ring (224) is disposed between the valve body (201) and the housing (102) to seal the opening (214).

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