Bidirectional valve assembly

Abstract

The utility model discloses a two-way valve assembly which comprises a first valve body and a second valve body, the first valve body and the second valve body respectively comprise a tubular body and a ball body rotatably arranged in the tubular body, and a strip-shaped guide groove is formed in the end face of one end of each tubular body. One end of a movable pin shaft is embedded into the strip-shaped guide groove and connected with the bottom face of the strip-shaped guide groove through a first spring, a pushing pin is movably arranged between the end, connected with the ball body, of the rotating handle and the movable pin shaft, and an arc-shaped pushing face in sliding contact with one end of the pushing pin is formed on the rotating handle. And a second spring is arranged between one side, opposite to the rotating handle, of the pushing pin and the tubular body. According to the utility model, the large-flow fluid channels can be conveniently opened during connection, and the respective large-flow fluid channels can be closed during separation, so that the abnormal opening of the flow channels caused by misoperation or mistaken touch is avoided, and the safety and stability in the use process are ensured.

Description

Technical Field

[0001] This utility model relates to a bidirectional valve assembly, belonging to the field of valve technology. Background Technology

[0002] Valves are commonly used to control the flow and stop of fluids in pipelines. They are important control components in fluid systems and can also control the direction, pressure, and flow rate of fluids. Currently, valves often face limitations in use due to their relatively small flow rates. Furthermore, when used as connections between two pipelines, they are prone to abnormal opening of the flow path from a closed state due to misoperation or accidental contact when disconnected, compromising safety and stability during operation. Utility Model Content

[0003] The purpose of this invention is to provide a bidirectional valve assembly that can facilitate the opening of high-flow-rate fluid channels when connected and close the respective high-flow-rate fluid channels when disconnected, while avoiding abnormal opening of the flow channels due to misoperation or accidental contact, thus ensuring safety and stability during use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bidirectional valve assembly, comprising: a first valve body and a second valve body, wherein one end of the first valve body and the second valve body are detachably connected, and the other end of each is used to connect to a fluid pipeline. Both the first valve body and the second valve body include a tubular body and a sphere rotatably disposed within the tubular body. The sphere, which can rotate around one of its diameter directions, has a flow channel through hole in a direction perpendicular to its rotation axis. One end of a rotating handle disposed on the outside of the tubular body is connected to the sphere and is used to drive the sphere to rotate. When the sphere rotates to the 0° position with the rotating handle, the direction of the flow channel through hole on the sphere is perpendicular to the axial direction of the tubular body, and the outer circumferential surface of the sphere is sealed to the inner wall of the tubular body. When the sphere rotates to the 90° position with the rotating handle, the direction of the flow channel through hole on the sphere is parallel to the axial direction of the tubular body, and the internal flow channels of the tubular body located on both sides of the sphere are connected through the flow channel through hole on the sphere.

[0005] A strip-shaped guide groove is provided on the end face of the tubular body for connecting to another valve body. One end of a movable pin is embedded in the strip-shaped guide groove and connected to the bottom surface of the strip-shaped guide groove by a first spring. A push pin is movably provided between the end of the rotating handle connected to the ball and the movable pin that can move along the axial direction of the tubular body. An arc-shaped push surface is formed on the rotatable rotating handle that slides in contact with one end of the push pin. The distance between the arc-shaped push surface extending over at least a quarter circumference and the rotation center of the rotating handle gradually changes in its extension direction. A second spring is provided between the push pin and the tubular body on the side opposite to the rotating handle, so that one end of the push pin is always in contact with the arc-shaped push surface on the rotating handle under the action of the second spring in a compressed state. An annular clearance groove is provided on the side wall of the movable pin that slides in contact with the inner wall of the strip-shaped guide groove.

[0006] When the first valve body and the second valve body are connected, their respective movable pins press against each other, causing one end of the movable pin to be flush with the end face of the corresponding tubular body, and the other end to compress the first spring in the strip guide groove, making the annular relief groove on the movable pin consistent with the height of the corresponding push pin. When the first valve body and the second valve body are separated, their respective movable pins can extend out of the end face of the tubular body under the action of the first spring. When the annular relief groove is consistent with the height of the corresponding push pin and the ball rotates to the 90° position with the rotating handle, the end of the push pin opposite to the arc-shaped push surface is embedded in the annular relief groove. When the ball rotates to the 0° position with the rotating handle, the two ends of the push pin are in abutting contact with the side wall of the movable pin and the arc-shaped push surface, respectively, and the end of the movable pin opposite to the first spring extends out of the end face of the tubular body.

[0007] The following are further improvements to the above technical solution:

[0008] 1. In the above scheme, at least one snap-fit ​​protrusion and at least one snap-fit ​​groove corresponding to the snap-fit ​​protrusion are respectively provided on the end face of the tubular body used to connect with the tubular body of another valve body. The first valve body and the second valve body are connected by the mutually cooperating snap-fit ​​protrusion and snap-fit ​​groove.

[0009] 2. In the above scheme, a sealing ring is provided between the inner wall of the tubular body and the outer circumferential surface of the sphere.

[0010] 3. In the above scheme, a first annular flange with an inner diameter smaller than that of the sphere is provided on the inner wall of the tubular body, and a second annular flange extending radially inward is provided on the inner wall of the first annular flange, and the sealing ring is disposed between the second annular flange and the sphere.

[0011] 4. In the above scheme, the end faces of both ends of the push pin are convex arc-shaped surfaces.

[0012] 5. In the above scheme, an annular pushing groove is formed on the movable pin shaft on the side of the annular relief groove near the first spring. The groove is connected to the annular relief groove and has a depth less than the annular relief groove. When the ball rotates to the 0° position with the rotating handle, one end of the pushing pin is in abutting contact with the bottom surface of the annular pushing groove.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] This utility model relates to a bidirectional valve assembly, comprising a first valve body and a second valve body, both including a tubular body and a ball rotatably disposed within the tubular body. A strip-shaped guide groove is formed on the end face of the tubular body at the end for connection with the other valve body. One end of a movable pin is embedded in the strip-shaped guide groove and connected to the bottom surface of the groove via a first spring. A push pin is movably disposed between the end of a rotating handle connected to the ball and the movable pin, which can move axially along the tubular body. An arc-shaped push surface is formed on the rotatable rotating handle, slidingly contacting one end of the push pin. The distance between the arc-shaped push surface and the rotation center of the rotating handle gradually changes in its extension direction. A second spring is disposed between the push pin and the tubular body on the side opposite to the rotating handle. An annular clearance groove is formed on the side wall of the movable pin, which slides in contact with the inner wall of the strip-shaped guide groove. When the first and second valve bodies are connected, their respective movable pins press against each other, causing one end of the movable pin to align with the end face of the corresponding tubular body. The first spring is compressed into the strip guide groove at the other end, making the annular relief groove on the movable pin consistent with the height of the corresponding push pin. When the first valve body and the second valve body are separated, their respective movable pins can extend out of the end face of the tubular body under the action of the first spring. When the annular relief groove is consistent with the height of the corresponding push pin and the ball rotates to the 90° position with the rotating handle, the end of the push pin opposite to the arc-shaped push surface is embedded in the annular relief groove. When the ball rotates to the 0° position with the rotating handle, the two ends of the push pin are in contact with the side wall of the movable pin and the arc-shaped push surface respectively, and the end of the movable pin opposite to the first spring extends out of the end face of the tubular body. This allows the large flow fluid channel between the two valve bodies to be opened when they are connected, and the large flow fluid channel connected to each valve body to be closed when they are separated. It also ensures the stability of the fluid channel when it is closed, avoids abnormal opening of the flow channel due to misoperation or accidental contact, and ensures safety and stability during use. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of the bidirectional valve assembly of this utility model;

[0016] Appendix Figure 2 This is a schematic diagram of the structure of the first valve body of the bidirectional valve assembly of this utility model in the 0° state;

[0017] Appendix Figure 3 For the appendix Figure 2 A schematic cross-sectional view along the middle AA section;

[0018] Appendix Figure 4 This is a schematic diagram of the structure of the first valve body of the bidirectional valve assembly of this utility model at 90°.

[0019] Appendix Figure 5 For the appendix Figure 4 A schematic cross-sectional view of the middle BB;

[0020] Appendix Figure 6 This is a partial structural diagram of the bidirectional valve assembly of this utility model in the 0° and 90° states;

[0021] Appendix Figure 7 This is a schematic diagram of the movable pin of the bidirectional valve assembly of this utility model in the 90° state.

[0022] In the above figures: 1. Tubular body; 2. Sphere; 3. Flow channel through hole; 4. Rotating handle; 41. Protrusion; 42. Arc-shaped push surface; 5. Sealing ring; 61. First annular flange; 62. Second annular flange; 7. Rotating shaft; 8. First valve body; 9. Second valve body; 10. Snap-fit ​​protrusion; 11. Snap-fit ​​groove; 12. Outer sealing ring; 13. Inner sealing ring; 151. Strip-shaped guide groove; 152. Movable pin; 16. First spring; 17. Push pin; 171. Protrusion; 18. Second spring; 19. Annular clearance groove; 20. Annular pushing groove. Detailed Implementation

[0023] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0024] Example 1: A bidirectional valve assembly includes: a first valve body 8 and a second valve body 9, wherein one end of the first valve body 8 and the second valve body 9 are detachably connected, and the other end of each is used to connect to a fluid pipeline. Both the first valve body 8 and the second valve body 9 include a tubular body 1 and a ball 2 rotatably disposed within the tubular body 1. The ball 2, which is rotatable about one of its diameter directions, has a flow channel 3 extending in a direction perpendicular to its rotation axis. A rotating handle 4 is disposed outside the tubular body 1. One end is connected to the ball 2 and used to drive the ball 2 to rotate. When the ball 2 rotates to the 0° position with the rotating handle 4, the direction of the flow channel through hole 3 on the ball 2 is perpendicular to the axis of the tubular body 1 and the outer circumferential surface of the ball 2 is sealed to the inner wall of the tubular body 1. When the ball 2 rotates to the 90° position with the rotating handle 4, the direction of the flow channel through hole 3 on the ball 2 is parallel to the axis of the tubular body 1 and the internal flow channels of the tubular body 1 located on both sides of the ball 2 are connected through the flow channel through hole 3 on the ball 2.

[0025] When in use, first close the flow channels inside the first valve body and the second valve body, and then connect one end of each valve body to the external fluid pipeline. The first valve body and the second valve body can be connected to each other or disconnected from each other.

[0026] When the first valve body and the second valve body are separated, their respective flow channels can be closed to prevent fluid overflow; when the first valve body and the second valve body are stably connected, their respective flow channels can be opened, thereby enabling the flow channels between the two connected pipelines to be connected.

[0027] A strip-shaped guide groove 151 is formed on the end face of the tubular body 1 that is connected to another valve body. One end of a movable pin 152 is embedded in the strip-shaped guide groove 151 and connected to the bottom surface of the strip-shaped guide groove 151 by a first spring 16. A push pin 17 is movably provided between the end of the rotating handle 4 connected to the ball 2 and the movable pin 152 that can move along the axial direction of the tubular body 1. An arc-shaped push pin 17 is formed on the rotatable rotating handle 4 that slides in contact with one end of the push pin 17. The distance between the arc-shaped push surface 42 extending on at least a quarter circumference and the rotation center of the rotating handle 4 gradually changes in its extending direction. A second spring 18 is provided between the push pin 17 on the side opposite to the rotating handle 4 and the tubular body 1, so that one end of the push pin 17 is always in contact with the arc-shaped push surface 42 on the rotating handle 4 under the action of the second spring 18 in the compression state. An annular relief groove 19 is provided on the side wall of the movable pin 152 that slides in contact with the inner wall of the strip guide groove 151.

[0028] For a single valve body:

[0029] When the flow channel needs to be switched from the closed state to the open state, firstly, the movable pin needs to be pressed into the strip guide groove to move the movable pin towards the first spring and squeeze the first spring until the annular clearance groove on the movable pin is aligned with the push pin. Then, drive the rotating handle to rotate the ball from the 0° position to the 90° position. At the 0° position, the distance H1 between the arc-shaped push surface on the rotating handle and the push pin and the rotation center of the rotating handle is less than the distance H2 between the arc-shaped push surface on the rotating handle and the push pin and the rotation center of the rotating handle at the 90° position. During the rotation of the rotating handle, the push pin gradually moves towards the movable pin under the action of the arc-shaped push surface on the rotating handle until its end is embedded in the strip guide groove on the movable pin. At the 90° position, the direction of the flow channel through hole on the ball is parallel to the axis of the tubular body, and the internal flow channels of the tubular body located on both sides of the ball are connected through the flow channel through hole on the ball, and the flow channel is opened.

[0030] When the first valve body 8 and the second valve body 9 are connected, their respective movable pins 152 press against each other, causing one end of the movable pin 152 to be flush with the end face of the corresponding tubular body 1, and the other end to compress the first spring 16 into the strip guide groove 151, making the annular relief groove 19 on the movable pin 152 consistent with the height of the corresponding push pin 17. When the first valve body 8 and the second valve body 9 are separated, their respective movable pins 152 can extend under the action of the first spring 16. When the annular relief groove 19 and the corresponding push pin 17 are at the same height and the ball 2 is rotated to a 90° position with the rotating handle 4, one end of the push pin 17 opposite to the arc-shaped push surface 42 is embedded in the annular relief groove 19. When the ball 2 is rotated to a 0° position with the rotating handle 4, both ends of the push pin 17 are in contact with the side wall of the movable pin 152 and the arc-shaped push surface 42 respectively, and one end of the movable pin 152 opposite to the first spring 16 extends out of the end face of the tubular body 1.

[0031] After the first valve body and the second valve body are stably connected, their respective movable pins press against each other, causing one end of the movable pin to be flush with the end face of the corresponding tubular body, and the other end to compress the spring in the strip guide groove, so that the annular relief groove on the movable pin is consistent with the height of the corresponding push pin, which facilitates switching the flow channels of the two from the closed state to the open state.

[0032] The tubular body 1 is provided with at least one snap-fit ​​protrusion 10 and at least one snap-fit ​​groove 11 corresponding to the snap-fit ​​protrusion 10 on the end face of the tubular body 1 used to connect with another valve body. The first valve body 8 and the second valve body 9 are connected by the snap-fit ​​protrusion 10 and the snap-fit ​​groove 11 that cooperate with each other. The two snap-fit ​​protrusions 10 and the two snap-fit ​​grooves 11 are spaced apart and staggered in the circumferential direction of the tubular body 1.

[0033] A sealing ring 5 is provided between the inner wall of the tubular body 1 and the outer circumferential surface of the sphere 2; a first annular flange 61 with an inner diameter smaller than the diameter of the sphere 2 is provided on the inner wall of the tubular body 1, and a second annular flange 62 with a radial inward direction is provided on the inner wall of the first annular flange 61, and the sealing ring 5 is provided between the second annular flange 62 and the sphere 2.

[0034] An outer sealing ring 12 is fitted on the outer side of one end of the tubular body 1 used to connect with another valve body, and an inner sealing ring 13 is installed on the side of the second annular flange 62 opposite to the ball 2.

[0035] The end faces of both ends of the aforementioned push pin 17 are convex arc-shaped surfaces.

[0036] The two opposing sidewalls of the aforementioned annular relief groove 19 are configured as sloping surfaces that mate with the end face of the push pin 17.

[0037] An annular pushing groove 20, which is connected to the annular pushing groove 19 and has a depth less than the annular pushing groove 19, is provided on the movable pin 152 and located on the side of the annular relief groove 19 near the first spring 16. When the ball 2 rotates to the 0° position with the rotating handle 4, one end of the push pin 17 presses against the bottom surface of the annular pushing groove 20.

[0038] The end of the rotating handle 4 connected to the ball 2 has a protrusion 41 that extends radially into the tubular body 1. One end of the protrusion 41, which is connected to the ball 2 by a bolt, is embedded in the ball 2.

[0039] Example 2: A bidirectional valve assembly includes: a first valve body 8 and a second valve body 9, wherein one end of the first valve body 8 and the second valve body 9 are detachably connected, and the other end of each is used to connect to a fluid pipeline. Both the first valve body 8 and the second valve body 9 include a tubular body 1 and a ball 2 rotatably disposed within the tubular body 1. The ball 2, which is rotatable about one of its diameter directions, has a flow channel 3 extending in a direction perpendicular to its rotation axis. A rotating handle 4 is disposed outside the tubular body 1. One end is connected to the ball 2 and used to drive the ball 2 to rotate. When the ball 2 rotates to the 0° position with the rotating handle 4, the direction of the flow channel through hole 3 on the ball 2 is perpendicular to the axis of the tubular body 1 and the outer circumferential surface of the ball 2 is sealed to the inner wall of the tubular body 1. When the ball 2 rotates to the 90° position with the rotating handle 4, the direction of the flow channel through hole 3 on the ball 2 is parallel to the axis of the tubular body 1 and the internal flow channels of the tubular body 1 located on both sides of the ball 2 are connected through the flow channel through hole 3 on the ball 2.

[0040] A strip-shaped guide groove 151 is formed on the end face of the tubular body 1 that is connected to another valve body. One end of a movable pin 152 is embedded in the strip-shaped guide groove 151 and connected to the bottom surface of the strip-shaped guide groove 151 by a first spring 16. A push pin 17 is movably provided between the end of the rotating handle 4 connected to the ball 2 and the movable pin 152 that can move along the axial direction of the tubular body 1. An arc-shaped push pin 17 is formed on the rotatable rotating handle 4 that slides in contact with one end of the push pin 17. The distance between the arc-shaped push surface 42 extending on at least a quarter circumference and the rotation center of the rotating handle 4 gradually changes in its extending direction. A second spring 18 is provided between the push pin 17 on the side opposite to the rotating handle 4 and the tubular body 1, so that one end of the push pin 17 is always in contact with the arc-shaped push surface 42 on the rotating handle 4 under the action of the second spring 18 in the compression state. An annular relief groove 19 is provided on the side wall of the movable pin 152 that slides in contact with the inner wall of the strip guide groove 151.

[0041] For a single valve body:

[0042] When the flow channel needs to be switched from the open state to the closed state, the rotating handle needs to be driven to rotate, causing the sphere to rotate from the 90° position to the 0° position. During this process, the push pin remains in contact with the arc-shaped push surface under the action of the second spring, causing the push pin to move away from the movable pin shaft along with the arc-shaped push surface, thus being pulled out from the strip guide groove on the movable pin shaft. At the same time, the movable pin shaft, no longer restricted by the push pin, resets under the action of the first spring, causing one end of it to extend out of the end face of the tubular body and its outer wall to press against one end of the push pin. The other end of the push pin presses against the arc-shaped push surface on the rotating handle, thus limiting the rotation handle and preventing the rotating handle from rotating due to misoperation or accidental contact. At the 0° position, the direction of the flow channel through hole on the sphere is perpendicular to the axis of the tubular body, and the outer circumferential surface of the sphere is sealed with the inner wall of the tubular body, thus closing the flow channel.

[0043] When the first valve body 8 and the second valve body 9 are connected, their respective movable pins 152 press against each other, causing one end of the movable pin 152 to be flush with the end face of the corresponding tubular body 1, and the other end to compress the first spring 16 into the strip guide groove 151, making the annular relief groove 19 on the movable pin 152 consistent with the height of the corresponding push pin 17. When the first valve body 8 and the second valve body 9 are separated, their respective movable pins 152 can extend under the action of the first spring 16. When the annular relief groove 19 and the corresponding push pin 17 are at the same height and the ball 2 is rotated to a 90° position with the rotating handle 4, one end of the push pin 17 opposite to the arc-shaped push surface 42 is embedded in the annular relief groove 19. When the ball 2 is rotated to a 0° position with the rotating handle 4, both ends of the push pin 17 are in contact with the side wall of the movable pin 152 and the arc-shaped push surface 42 respectively, and one end of the movable pin 152 opposite to the first spring 16 extends out of the end face of the tubular body 1.

[0044] After the first valve body and the second valve body are stably connected, their respective movable pins press against each other, so that one end of the movable pin is flush with the end face of the corresponding tubular body, and the other end compresses the spring in the strip guide groove, so that the annular relief groove on the movable pin is consistent with the height of the corresponding push pin, which makes it easy to switch the flow channels of the two from the closed state to the open state.

[0045] When it is necessary to separate the first valve body and the second valve body from each other, their respective flow channels must first be closed.

[0046] After the first valve body and the second valve body are completely separated, their respective movable pins are reset and extended from the end face of the tubular body under the action of the first spring. The two ends of the push pin are respectively pressed against the outer wall of the movable pin and the arc-shaped push surface on the rotating handle to limit the rotation handle and prevent the rotating handle from rotating due to misoperation or accidental contact.

[0047] The tubular body 1 is provided with at least one snap-fit ​​protrusion 10 and at least one snap-fit ​​groove 11 corresponding to the snap-fit ​​protrusion 10 on the end face of the tubular body 1 used to connect with another valve body. The first valve body 8 and the second valve body 9 are connected by the snap-fit ​​protrusion 10 and the snap-fit ​​groove 11 that cooperate with each other.

[0048] A sealing ring 5 is provided between the inner wall of the tubular body 1 and the outer circumferential surface of the sphere 2.

[0049] The inner wall of the tubular body 1 is provided with a first annular flange 61 whose inner diameter is smaller than that of the sphere 2. The inner wall of the first annular flange 61 is provided with a second annular flange 62 that runs radially inward. The sealing ring 5 is disposed between the second annular flange 62 and the sphere 2.

[0050] The end faces of both ends of the aforementioned push pin 17 are convex arc-shaped surfaces.

[0051] An annular pushing groove 20, which is connected to the annular pushing groove 19 and has a depth less than the annular pushing groove 19, is provided on the movable pin 152 and located on the side of the annular relief groove 19 near the first spring 16. When the ball 2 rotates to the 0° position with the rotating handle 4, one end of the push pin 17 presses against the bottom surface of the annular pushing groove 20.

[0052] The sidewall of the aforementioned annular pushing groove 20 away from the annular relief groove 19 is configured as a sloping surface that mates with the end face of the push pin 17.

[0053] A protrusion 171 is formed on the side wall of the push pin 17, extending outward therefrom. The second spring 18 is disposed between the protrusion 171 and the tubular body 1. Grooves for the two ends of the second spring 18 are respectively provided on the protrusion 171 and the tubular body 1.

[0054] A sealing ring is provided between the protrusion 41 that rotatably engages with the tubular body 1 and the tubular body 1.

[0055] The sphere 2, which is opposite to the rotating handle 4, is connected to the inner wall of the tubular body 1 by a rotating shaft 7.

[0056] The working principle of this utility model is as follows:

[0057] In use, first put the flow channels inside the first valve body and the second valve body into the closed state, and then connect one end of each of them to the external fluid pipeline. The first valve body and the second valve body can be connected to each other or disconnected from each other. The specific connection method can be the conventional means of existing technology, which will not be elaborated here.

[0058] When the first valve body and the second valve body are separated, their respective flow channels can be closed to prevent fluid overflow; when the first valve body and the second valve body are stably connected, their respective flow channels can be opened, thereby enabling the flow channels between the two connected pipelines to be connected.

[0059] For a single valve body:

[0060] When the flow channel needs to be switched from the closed state to the open state, firstly, the movable pin needs to be pressed into the strip guide groove to move the movable pin towards the first spring and squeeze the first spring until the annular clearance groove on the movable pin is aligned with the push pin. Then, drive the rotating handle to rotate the ball from the 0° position to the 90° position. At the 0° position, the distance H1 between the arc-shaped push surface on the rotating handle and the push pin and the rotation center of the rotating handle is less than the distance H2 between the arc-shaped push surface on the rotating handle and the push pin and the rotation center of the rotating handle at the 90° position. During the rotation of the rotating handle, the push pin gradually moves towards the movable pin under the action of the arc-shaped push surface on the rotating handle until its end is embedded in the strip guide groove on the movable pin. At the 90° position, the direction of the flow channel through hole on the ball is parallel to the axis of the tubular body, and the internal flow channels of the tubular body located on both sides of the ball are connected through the flow channel through hole on the ball, and the flow channel is opened.

[0061] When the flow channel needs to be switched from the open state to the closed state, the rotating handle needs to be driven to rotate, causing the sphere to rotate from the 90° position to the 0° position. During this process, the push pin remains in contact with the arc-shaped push surface under the action of the second spring, causing the push pin to move away from the movable pin shaft along with the arc-shaped push surface, thus being pulled out from the strip guide groove on the movable pin shaft. At the same time, the movable pin shaft, no longer restricted by the push pin, resets under the action of the first spring, causing one end of it to extend out of the end face of the tubular body and its outer wall to press against one end of the push pin. The other end of the push pin presses against the arc-shaped push surface on the rotating handle, thus limiting the rotation handle and preventing the rotating handle from rotating due to misoperation or accidental contact. At the 0° position, the direction of the flow channel through hole on the sphere is perpendicular to the axis of the tubular body, and the outer circumferential surface of the sphere is sealed with the inner wall of the tubular body, thus closing the flow channel.

[0062] When it is necessary to separate the first valve body and the second valve body from each other, their respective flow channels must first be closed.

[0063] After the first valve body and the second valve body are completely separated, their respective movable pins are reset and extended from the end face of the tubular body under the action of the first spring. The two ends of the push pin are respectively pressed against the outer wall of the movable pin and the arc-shaped push surface on the rotating handle to limit the rotation handle and prevent the rotating handle from rotating due to misoperation or accidental contact.

[0064] When the above-mentioned bidirectional valve assembly is used, it can facilitate the opening of the high-flow-rate fluid channel between the two valve bodies when they are connected, and can also close the high-flow-rate fluid channel connected to each valve body when they are separated, ensuring the stability of the fluid channel when it is closed, avoiding abnormal opening of the flow channel due to misoperation or accidental contact, and ensuring safety and stability during use.

[0065] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A bidirectional valve assembly comprising: First valve body (8) and second valve body (9), the first valve body (8) and second valve body (9) are detachably connected between one end of each, and the other end is used to be connected with fluid pipeline, it is characterized in that: the first valve body (8), second valve body (9) all include tubular body (1) and the ball (2) rotatably arranged in tubular body (1), the ball (2) on one diameter direction around it rotatable is opened with a flow passage through hole (3) in the direction perpendicular to its rotation axis, one end of the rotating handle (4) arranged on the outside of tubular body (1) is connected with the ball (2) and is used to drive the ball (2) rotation, when the ball (2) rotates to 0 ° position with rotating handle (4), the direction of flow passage through hole (3) on the ball (2) is perpendicular to the axial direction of tubular body (1) and the outer circumferential surface of ball (2) is sealed with the inner wall of tubular body (1), when the ball (2) rotates to 90 ° position with rotating handle (4), the direction of flow passage through hole (3) on the ball (2) is parallel with the axial direction of tubular body (1) and the internal flow passage between the both sides of tubular body (1) is guided through flow passage through hole (3) on the ball (2); The tubular body (1) is used to open a strip-shaped guide slot (151) on the end face of the connecting end of the tubular body (1) of another valve body, one end of a movable pin shaft (152) is embedded in the strip-shaped guide slot (151) and is connected with the bottom surface of the strip-shaped guide slot (151) through a first spring (16), the end connected with the ball (2) of the rotating handle (4) is movably provided with a push pin (17) between the movable pin shaft (152) that can move along the axial direction of tubular body (1), the rotating handle (4) is formed with an arc-shaped push surface (42) that is in sliding contact with one end of the push pin (17), the distance between the arc-shaped push surface (42) extending on at least a quarter of a circumference and the rotation center of the rotating handle (4) gradually changes in its extension direction, a second spring (18) is arranged between the side opposite to the rotating handle (4) of the push pin (17) and the tubular body (1), so that one end of the push pin (17) is always in extrusion contact with the arc-shaped push surface (42) on the rotating handle (4) under the action of the second spring (18) in extrusion state, a ring-shaped accommodation slot (19) is opened in the side wall of the movable pin shaft (152) in sliding contact with the inner wall of the strip-shaped guide slot (151). When the first valve body (8) and the second valve body (9) are connected to each other, the respective movable pin shafts (152) are in extrusion contact with each other, so that one end of the movable pin shaft (152) is flush with the end face of the corresponding tubular body (1), the other end compresses the first spring (16) into the strip-shaped guide groove (151), and the annular accommodation groove (19) on the movable pin shaft (152) is in alignment with the corresponding push pin (17). When the first valve body (8) and the second valve body (9) are separated from each other, the respective movable pin shafts (152) can extend out of the end face of the tubular body (1) under the action of the first spring (16). When the annular accommodation groove (19) is in alignment with the corresponding push pin (17) and the ball (2) is rotated to the 90° position with the rotating handle (4), the end of the push pin (17) opposite to the arc-shaped push surface (42) is embedded in the annular accommodation groove (19). When the ball (2) is rotated to the 0° position with the rotating handle (4), the two ends of the push pin (17) are in abutting contact with the side wall of the movable pin shaft (152) and the arc-shaped push surface (42) respectively, and the end of the movable pin shaft (152) opposite to the first spring (16) extends out of the end face of the tubular body (1).

2. The bidirectional valve assembly of claim 1, wherein: The end face of one end of the tubular body (1) for connecting with the tubular body (1) of another valve body is provided with at least one clamping protrusion (10) and at least one clamping groove (11) corresponding to the clamping protrusion (10). The first valve body (8) and the second valve body (9) are connected through the clamping protrusion (10) and the clamping groove (11) matched with each other.

3. The bidirectional valve assembly of claim 1, wherein: A sealing ring (5) is arranged between the inner wall of the tubular body (1) and the outer circumferential surface of the ball (2).

4. The bidirectional valve assembly of claim 3, wherein: A first annular flange (61) with an inner diameter smaller than the diameter of the ball (2) is arranged on the inner wall of the tubular body (1). A second annular flange (62) radially inward is arranged on the inner wall of the first annular flange (61). The sealing ring (5) is arranged between the second annular flange (62) and the ball (2).

5. The bidirectional valve assembly of claim 1, wherein: The end faces of the two ends of the push pin (17) are both outwardly convex arc-shaped faces.

6. The bidirectional valve assembly of claim 1, wherein: An annular pushing groove (20) in communication with the annular accommodation groove (19) and having a depth smaller than the annular accommodation groove (19) is arranged on the movable pin shaft (152) and located on the side of the annular accommodation groove (19) close to the first spring (16). When the ball (2) is rotated to the 0° position with the rotating handle (4), one end of the push pin (17) is in abutting contact with the bottom surface of the annular pushing groove (20).

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