Two-way valve connector
By designing the ball rotation and limiting ball cooperation in the bidirectional valve connector, the problems of small flow rate and unstable on/off operation caused by accidental contact in existing valves are solved, realizing stable control and improved safety of large flow fluid channels.
Patent Information
- Application Number
- CN202520011306.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The existing valves have low flow rates and are prone to unstable on/off states due to accidental activation, resulting in poor safety.
A bidirectional valve connector is designed to achieve sealing and conduction of the flow channel by rotating the ball at 0° and 90° positions. The design of the limiting ball and spring ensures the stability of the flow channel in the open and closed states.
It enables stable opening and closing of high-flow-rate fluid channels, avoids changes in fluid state caused by accidental touch, and improves safety and flexibility of application scenarios.
Smart Images
Figure CN223794697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a bidirectional valve connector, belonging to the field of valve technology. Background Technology
[0002] Valves are control components in fluid transport systems, possessing functions such as guiding, intercepting, regulating, throttling, preventing backflow, diverting, or overflowing and relieving pressure. They can be used to control various types of fluid flows, including air, water, steam, various chemical media, slurry, and liquid metals. Existing valves often suffer from limited flow rates, restricting their application scenarios. Furthermore, when installed at intermediate points such as the beginning or connection of a pipeline, valves are prone to unstable on / off states due to accidental activation or misoperation, resulting in poor safety. Utility Model Content
[0003] The purpose of this utility model is to provide a bidirectional valve connector that can open the high-flow-rate fluid channel between two valves when they are connected, and close the high-flow-rate fluid channel connected to each valve when they are separated, while also preventing changes in the fluid opening and closing state due to accidental contact.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bidirectional valve connector, comprising: a first valve and a second valve detachably connected to the first valve, one end of the first valve and the second valve respectively cooperating with each other, and a pipe connector installed at the other end of each valve, the first valve and the second valve each comprising a tubular body with one end connected to the pipe connector, and a sphere rotatably disposed inside the other end of the tubular body, the sphere being rotatable around one of its diameter directions having 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 being connected to the sphere and used to drive the sphere to rotate, when the sphere rotates with the rotating handle to the 0° position, 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 with the inner wall of the tubular body, when the sphere rotates with the rotating handle to the 90° position, 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 receiving hole is opened on the side surface of the other end of the rotating handle facing the tubular body. A limiting ball that can rotate with the rotating handle is rotatably embedded in the receiving hole. A guide plane that rolls with the limiting ball is formed on the outer wall of the tubular body. A strip groove extending normally along the rolling trajectory of the limiting ball is opened on the rotating handle. A limiting pin is installed in the strip groove that communicates with the receiving hole. A spring is connected between the other end of the limiting pin, which can extend to the outside of the strip groove, and the bottom surface of the strip groove. An annular groove for the limiting ball to be embedded is opened in the middle of the limiting pin that slides in contact with the inner wall of the strip groove. A stop groove for the limiting ball to be embedded is opened at both ends of the arc-shaped guide plane. When the spring is in a compressed state, the limiting ball that rolls in contact with the guide plane is embedded in the stop groove. When the ball rotates to the 0° and 90° positions and the spring is in a natural state, the limiting ball is embedded in the stop groove at both ends of the guide plane respectively.
[0006] The following are further improvements to the above technical solution:
[0007] 1. In the above scheme, the inner or outer wall of the pipe joint is provided with threads for connecting to external pipes.
[0008] 2 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 opposite to the pipe joint. The first valve and the second valve are connected by the snap-fit protrusion and the snap-fit groove that cooperate with each other.
[0009] 3 In the above scheme, the two snap-fit protrusions and the two snap-fit grooves are spaced apart and staggered in the circumferential direction of the tubular body.
[0010] 4. In the above scheme, an outer sealing ring is fitted on the outer side of the tubular body opposite to the pipe joint end.
[0011] 5. In the above scheme, the end face of the pipe joint that is embedded in the tubular body and sealed with the inner wall of the tubular body facing the sphere is set as an arc-shaped inclined surface that cooperates with the sphere.
[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0013] This utility model relates to a bidirectional valve connector. The first and second valves, which are detachable from each other, each include a tubular body with one end connected to a pipe connector. A rotatable sphere is rotatably disposed inside the other end of the tubular body. 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 in a sealing fit with 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. A receiving hole is formed on the side surface of the rotating handle facing the tubular body, and a limiting sphere that rotates with the rotating handle is rotatably embedded in the receiving hole. A guide plane is formed on the outer wall of the tubular body to roll with the limiting sphere. A strip-shaped groove extending normally along the rolling trajectory of the limiting sphere is formed on the rotating handle, communicating with the receiving hole. A limiting pin is embedded in the strip groove. One end of the limiting pin extends to the outside of the strip groove, and the other end is connected to the bottom surface of the strip groove with a spring. The limiting pin, which slides in contact with the inner wall of the strip groove, has an annular groove in the middle for a limiting ball to be inserted. At both ends of the arc-shaped guide plane, there are stop grooves for the limiting ball to be inserted. When the spring is under pressure, the limiting ball, which rolls in contact with the guide plane, is inserted into the stop groove. When the ball rotates to the 0° and 90° positions and the spring is in its natural state, the limiting ball is inserted into the stop grooves at both ends of the guide plane. This allows the high-flow fluid channel between two valves to be opened when they are connected, and the high-flow fluid channel connected to each valve to be closed when they are separated. It also ensures the stability of the fluid channel in both open and closed states, and avoids changes in the fluid opening and closing state due to accidental contact during use. Attached Figure Description
[0014] Appendix Figure 1 This is a schematic diagram of the structure of the bidirectional valve connector of this utility model;
[0015] Appendix Figure 2 This is a partial structural diagram of the bidirectional valve connector of this utility model in the 0° state. Figure 1 ;
[0016] Appendix Figure 3 This is a partial structural diagram of the bidirectional valve connector of this utility model in the 0° state. Figure 2 ;
[0017] Appendix Figure 4 For the appendix Figure 3 A schematic cross-sectional view along the middle AA section;
[0018] Appendix Figure 5 For the appendix Figure 3 A schematic cross-sectional view of the middle BB;
[0019] Appendix Figure 6 For the appendix Figure 5 Enlarged view of point C in the middle;
[0020] Appendix Figure 7 This is a partial structural diagram of the bidirectional valve connector of this utility model in the 80° state;
[0021] Appendix Figure 8 For the appendix Figure 7 A schematic cross-sectional view of the middle DD.
[0022] In the above attached figures: 1. Tubular body; 2. Sphere; 3. Flow channel through hole; 4. Rotating handle; 41. Protrusion; 5. Sealing ring; 61. First annular flange; 62. Second annular flange; 7. Rotating shaft; 8. Accommodating hole; 91. Limiting sphere; 92. Guide plane; 93. Stop groove; 10. Strip groove; 11. Limiting pin; 12. Spring; 13. Annular groove; 14. Limiting annular groove; 15. Inner sealing ring; 16. Outer sealing ring; 17. Snap-fit groove; 18. Snap-fit protrusion; 19. Pipe joint; 20. Second valve; 21. First valve. 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 connector, comprising: a first valve 21 and a second valve 20 detachably connected to the first valve 21. One end of the first valve 21 and the second valve 20 are mutually fitted, and the other end of each is equipped with a pipe connector 19. Each of the first valve 21 and the second valve 20 includes a tubular body 1 with one end connected to the pipe connector 19. A sphere 2 is rotatably disposed inside the other end of the tubular body 1. A flow channel penetrating in a direction perpendicular to its axis of rotation is formed on the sphere 2, which can rotate about one of its diameter directions. Through hole 3, one end of a rotating handle 4 located on the outside of the tubular body 1 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] In use, the first valve and the second valve are connected to the external fluid pipeline through pipe joints respectively. The first valve and the second valve can be connected to each other or disconnected from each other. The specific connection method can adopt the conventional means of existing technology.
[0026] A receiving hole 8 is formed on the side surface of the rotating handle 4 facing the tubular body 1. A limiting ball 91 that can rotate with the rotating handle 4 is rotatably embedded in the receiving hole 8. A guide plane 92 is formed on the outer wall of the tubular body 1 to roll with the limiting ball 91. A strip groove 10 extending normally along the rolling trajectory of the limiting ball 91 is formed on the rotating handle 4. A limiting pin 11 is embedded in the strip groove 10 that communicates with the receiving hole 8. The other end of the limiting pin 11, which can extend to the outside of the strip groove 10, is connected to the bottom surface of the strip groove 10 by a [missing information]. The spring 12 has an annular groove 13 in the middle of the limiting pin 11 that slides in contact with the inner wall of the strip groove 10, into which the limiting ball 91 can be inserted. The two ends of the arc-shaped guide plane 92 are respectively provided with a stop groove 93 into which the limiting ball 91 can be inserted. When the spring 12 is in a compressed state, the limiting ball 91 that rolls in contact with the guide plane 92 is inserted into the stop groove 93. When the ball 2 rotates to the 0° and 90° positions and the spring 12 is in a natural state, the limiting ball 91 is respectively inserted into the stop groove 93 at both ends of the guide plane 92.
[0027] When the flow channel needs to be opened, first manually push the end of the rotating handle extending out of the slot into the slot to compress the spring until the annular groove on the rotating handle aligns with the receiving hole, allowing the limiting ball to partially embed into the annular groove through the receiving hole. Then drive the rotating handle to rotate until the ball rotates to a 90° position. During the rotation of the rotating handle, the moving limiting ball rolls into contact with the guide plane on the tubular body until it aligns with the stop groove at one end of the guide plane. At this point, release the rotating handle so that it moves out of the slot and resets under the action of the compressed spring. As the rotating handle moves, the annular groove on the rotating handle gradually moves away from the limiting ball, and the limiting ball embeds into the stop groove under the push of the side surface of the rotating handle. This prevents the rotating handle from rotating under the limiting position of the limiting ball and the stop groove on the tubular body. At this time, the direction of the flow channel through hole on the ball at the 90° position is parallel to the axis of the tubular body, and the internal flow channels of the tubular body on both sides of the ball are connected through the flow channel through hole on the ball, thus opening the flow channel.
[0028] At least one snap-fit protrusion 18 and at least one snap-fit groove 17 corresponding to the snap-fit protrusion 18 are respectively provided on the end face of the tubular body 1 opposite to the pipe joint 19. The first valve 21 and the second valve 20 are connected by the mutually cooperating snap-fit protrusion 18 and snap-fit groove 17. The two snap-fit protrusions 18 and the two snap-fit grooves 17 are spaced apart and staggered in the circumferential direction of the tubular body 1.
[0029] An outer sealing ring 16 is fitted on the outer side of the tubular body 1 opposite to the pipe connector 19; the end face of the pipe connector 19, which is embedded in the tubular body 1 and seals with the inner wall of the tubular body 1, facing the sphere 2, is set as an arc-shaped inclined surface that cooperates with the sphere 2.
[0030] The two opposing sidewalls of the aforementioned annular groove 13 are configured as sloping surfaces that cooperate with the limiting ball 91; a limiting annular groove 14 communicating with the annular groove 13 is provided on the limiting pin 11 on the side of the annular groove 13 near the spring 12, and the annular bottom surface of the limiting annular groove 14, which is less than the depth of the annular groove 13, is in abutting contact with the other side of the limiting ball 91 that is embedded in the stop groove 93 on one side; the sidewall of the limiting annular groove 14 is configured as a sloping surface that cooperates with the limiting ball 91.
[0031] Example 2: A bidirectional valve connector, comprising: a first valve 21 and a second valve 20 detachably connected to the first valve 21. One end of the first valve 21 and the second valve 20 are mutually fitted, and the other end of each is equipped with a pipe connector 19. Each of the first valve 21 and the second valve 20 includes a tubular body 1 with one end connected to the pipe connector 19. A sphere 2 is rotatably disposed inside the other end of the tubular body 1. A flow channel penetrating in a direction perpendicular to its axis of rotation is formed on the sphere 2, which can rotate about one of its diameter directions. Through hole 3, one end of a rotating handle 4 located on the outside of the tubular body 1 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.
[0032] When the first valve and the second valve are disconnected, their respective flow channels can be closed to prevent fluid overflow; when the first valve and the second valve are stably connected, their respective flow channels can be opened, thereby enabling flow channel connection between the pipes connected to the two valves.
[0033] A receiving hole 8 is formed on the side surface of the rotating handle 4 facing the tubular body 1. A limiting ball 91 that can rotate with the rotating handle 4 is rotatably embedded in the receiving hole 8. A guide plane 92 is formed on the outer wall of the tubular body 1 to roll with the limiting ball 91. A strip groove 10 extending normally along the rolling trajectory of the limiting ball 91 is formed on the rotating handle 4. A limiting pin 11 is embedded in the strip groove 10 that communicates with the receiving hole 8. The other end of the limiting pin 11, which can extend to the outside of the strip groove 10, is connected to the bottom surface of the strip groove 10 by a [missing information]. The spring 12 has an annular groove 13 in the middle of the limiting pin 11 that slides in contact with the inner wall of the strip groove 10, into which the limiting ball 91 can be inserted. The two ends of the arc-shaped guide plane 92 are respectively provided with a stop groove 93 into which the limiting ball 91 can be inserted. When the spring 12 is in a compressed state, the limiting ball 91 that rolls in contact with the guide plane 92 is inserted into the stop groove 93. When the ball 2 rotates to the 0° and 90° positions and the spring 12 is in a natural state, the limiting ball 91 is respectively inserted into the stop groove 93 at both ends of the guide plane 92.
[0034] When switching the flow channel from the open to the closed state, first manually push the end of the rotating handle extending from the slot into the slot to compress the spring until the annular groove on the rotating handle aligns with the receiving hole, allowing the limiting ball to partially embed into the annular groove through the receiving hole. Then drive the rotating handle to rotate until the ball rotates from the 90° position to the 0° position. During the rotation of the rotating handle, the limiting ball, moving with the rotating handle, crawls out from the stop groove on one end of the guide plane and contacts the guide plane, simultaneously embedding into the annular groove. Then, the limiting ball rolls into contact with the guide plane on the tubular body. Until it aligns with the stop groove at the other end of the guide plane, release the rotating handle so that it moves out of the slot under the action of the compressed spring and resets. As the rotating handle moves, the annular groove on the rotating handle gradually moves away from the limiting ball, and the limiting ball is pushed into the stop groove by the side surface of the rotating handle. This makes the rotating handle unable to rotate under the limiting ball and the stop groove on the tubular body. At this time, the direction of the flow channel through hole on the ball at the 0° position is perpendicular to the axis of the tubular body, and the outer circumferential surface of the ball is sealed with the inner wall of the tubular body, and the flow channel is closed.
[0035] The outer wall of the aforementioned pipe joint 19 is provided with threads for connecting to external pipes; an outer sealing ring 16 is fitted on the outer side of the tubular body 1 opposite to one end of the pipe joint 19.
[0036] A sealing ring 5 is provided between the inner wall of the tubular body 1 opposite to the pipe joint 19 and the outer circumferential surface of the sphere 2.
[0037] On the inner wall of the tubular body 1 opposite to the pipe connector 19, there is a first annular flange 61 with an inner diameter smaller than that of the sphere 2. On the inner wall of the first annular flange 61, there is a second annular flange 62 that runs radially inward. A sealing ring 5 is disposed between the second annular flange 62 and the sphere 2. An inner sealing ring 15 is installed on the side of the second annular flange 62 opposite to the sphere 2.
[0038] The inner wall of the aforementioned stop groove 93 is a spherical surface; the end of the aforementioned rotating handle 4 connected to the ball 2 has a protrusion 41 extending radially into the tubular body 1, and one end of the protrusion 41 connected to the ball 2 by bolts is embedded in the ball 2.
[0039] A sealing ring is provided between the protrusion 41 that rotatably engages with the tubular body 1 and the tubular body 1; the sphere 2 is connected to the inner wall of the tubular body 1 on the side opposite to the rotating handle 4 via a rotating shaft 7.
[0040] The working principle of this utility model is as follows:
[0041] In use, the first valve and the second valve are connected to the external fluid pipeline through pipe joints respectively. The first valve and the second valve can be connected to each other or disconnected from each other. The specific connection method can be adopted using existing technical methods, which will not be elaborated here.
[0042] When the first valve and the second valve are disconnected, their respective flow channels can be closed to prevent fluid overflow; when the first valve and the second valve are stably connected, their respective flow channels can be opened, thereby enabling flow channel connection between the pipes connected to the two valves.
[0043] For the first valve or the second valve:
[0044] When the flow channel needs to be opened, first manually push the end of the rotating handle extending out of the slot into the slot to compress the spring until the annular groove on the rotating handle aligns with the receiving hole, allowing the limiting ball to partially embed into the annular groove through the receiving hole. Then drive the rotating handle to rotate until the ball rotates to a 90° position. During the rotation of the rotating handle, the limiting ball moves and rolls into contact with the guide plane on the tubular body until it aligns with the stop groove at one end of the guide plane. At this point, release the rotating handle so that it moves out of the slot and resets under the action of the compressed spring. As the rotating handle moves, the annular groove on the rotating handle gradually moves away from the limiting ball, and the limiting ball embeds into the stop groove under the push of the side surface of the rotating handle. This prevents the rotating handle from rotating under the limiting position of the limiting ball and the stop groove on the tubular body. At this time, the direction of the flow channel through hole on the ball at the 90° position is parallel to the axis of the tubular body, and the internal flow channels of the tubular body on both sides of the ball are connected through the flow channel through hole on the ball, thus opening the flow channel.
[0045] When switching the flow channel from the open to the closed state, first manually push the end of the rotating handle extending from the slot into the slot to compress the spring until the annular groove on the rotating handle aligns with the receiving hole, allowing the limiting ball to partially embed into the annular groove through the receiving hole. Then drive the rotating handle to rotate until the ball rotates from the 90° position to the 0° position. During the rotation of the rotating handle, the limiting ball, moving with the rotating handle, crawls out from the stop groove on one end of the guide plane and contacts the guide plane, simultaneously embedding into the annular groove. Then, the limiting ball rolls into contact with the guide plane on the tubular body. Until it aligns with the stop groove at the other end of the guide plane, release the rotating handle so that it moves out of the slot under the action of the compressed spring and resets. As the rotating handle moves, the annular groove on the rotating handle gradually moves away from the limiting ball, and the limiting ball is pushed into the stop groove by the side surface of the rotating handle. This makes the rotating handle unable to rotate under the limiting ball and the stop groove on the tubular body. At this time, the direction of the flow channel through hole on the ball at the 0° position is perpendicular to the axis of the tubular body, and the outer circumferential surface of the ball is sealed with the inner wall of the tubular body, and the flow channel is closed.
[0046] When using the above-mentioned bidirectional valve connector, it can open the high-flow fluid channel between the two valves when they are connected, and close the high-flow fluid channel connected to each valve when they are separated. It can also ensure the stability of the fluid channel in both open and closed states, and avoid changes in the fluid opening and closing state due to accidental contact during use.
[0047] 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 two-way valve connector, comprising: A first valve (21) and a second valve (20) detachably connected to the first valve (21), each of the first valve (21) and the second valve (20) having a mutual fit at one end and a pipe connector (19) installed at the other end of each, each of the first valve (21) and the second valve (20) including a tubular body (1) with one end connected to the pipe connector (19), characterized in that: a sphere (2) is rotatably provided inside the other end of the tubular body (1), and a flow channel through hole (3) is provided on the sphere (2) which can rotate around one of its diameter directions in a direction perpendicular to its rotation axis. One end of the rotating handle (4) on the outside of the body (1) 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). A receiving hole (8) is opened on the side surface of the rotating handle (4) facing the tubular body (1). A limiting ball (91) that can rotate with the rotating handle (4) is rotatably embedded in the receiving hole (8). A guide plane (92) that rolls with the limiting ball (91) is formed on the outer wall of the tubular body (1). A strip groove (10) extending in the normal direction along the rolling trajectory of the limiting ball (91) is opened on the rotating handle (4). A limiting pin (11) is embedded in the strip groove (10) that communicates with the receiving hole (8). The other end of the limiting pin (11), which can extend to the outside of the strip groove (10), is connected to the bottom surface of the strip groove (10). A spring (12) has an annular groove (13) in the middle of a limiting pin (11) that slides in contact with the inner wall of a strip groove (10) for a limiting ball (91) to be inserted. At both ends of an arc-shaped guide plane (92), there are stop grooves (93) for the limiting ball (91) to be inserted. When the spring (12) is under pressure, the limiting ball (91) that rolls in contact with the guide plane (92) is inserted into the stop groove (93). When the ball (2) rotates to the 0° and 90° positions and the spring (12) is in its natural state, the limiting ball (91) is inserted into the stop grooves (93) at both ends of the guide plane (92).
2. The bidirectional valve connector according to claim 1, characterized in that: The inner or outer wall of the pipe fitting (19) is provided with threads for connecting to external pipes.
3. The bidirectional valve connector according to claim 1, characterized in that: The tubular body (1) is provided with at least one snap-fit protrusion (18) and at least one snap-fit groove (17) corresponding to the snap-fit protrusion (18) on the end face opposite to the pipe connector (19). The first valve (21) and the second valve (20) are connected by the snap-fit protrusion (18) and the snap-fit groove (17) that cooperate with each other.
4. The bidirectional valve connector according to claim 3, characterized in that: Two snap-fit protrusions (18) and two snap-fit grooves (17) are spaced apart and staggered in the circumferential direction of the tubular body (1).
5. The bidirectional valve connector according to claim 1, characterized in that: An outer sealing ring (16) is fitted on the outer side of the tubular body (1) opposite to the end of the pipe joint (19).
6. The bidirectional valve connector according to claim 1, characterized in that: The end face of the pipe connector (19), which is embedded in the tubular body (1) and sealed to the inner wall of the tubular body (1), facing the sphere (2), is set as an arc-shaped inclined surface that cooperates with the sphere (2).