Bidirectionally connected switch valve assembly

Abstract

The utility model discloses a two-way connection switch valve assembly which comprises a first valve body and a second valve body, one end of the first valve body is used for being connected with a fluid pipeline, the second valve body comprises a tubular body and a ball body rotatably arranged in the tubular body, and a rotating handle is arranged on the outer side of the tubular body. One end of the rotating handle is a free end, the other end of the rotating handle is provided with a protruding portion, the protruding portion is sleeved with a driving ring, a pushing pin is movably arranged between the driving ring and the movable pin shaft capable of moving in the axial direction of the tubular body, and the side surface, opposite to one end of the movable pin shaft, of the pushing pin is provided with a protruding strip portion extending outwards in the radial direction. The protruding strip part is embedded in a strip-shaped groove extending on at least one quarter of the circumference in a sliding mode. According to the utility model, when the two valve bodies are connected or separated, respective high-flow fluid channels can be opened or closed at the same time, the stability of the fluid channels in a closed state can be ensured, the abnormal opening of the fluid channels is avoided, and quick-wear parts are convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to a two -way connected switch valve subassembly belongs to valve joint technical field. BACKGROUND

[0002] To meet high performance computing services, data center servers run in the process will produce a large amount of heat. Currently, using liquid medium direct contact server components for heat dissipation, effectively absorb and exclude the heat generated by components. Specifically, there is a liquid cooling circuit in the liquid cooling server, the liquid cooling circuit of the server and the distributor of the cabinet are connected through quick connector or other forms of valve joint, so that the liquid cooling circuit of the server and the distributor circuit are through, so as to realize the purpose of heat exchange between the liquid cooling circuit of the server and the outside circulation. The valve joint of the prior art, when opening and closing the fluid passage in daily life, is easy to cause abnormal opening of the flow channel due to accidental touch, which causes safety hazards. SUMMARY

[0003] The utility model discloses a two -way connected switch valve subassembly, the two -way connected switch valve subassembly can open or close the large -flow fluid passage of each other when two valve bodies connect or separate, can guarantee the stability when the fluid passage is in the closed state, avoid the abnormal opening of the flow channel, and also facilitate the replacement of the vulnerable parts.

[0004] To achieve the above object, the utility model adopts the technical scheme of a two -way connected switch valve subassembly, comprising: first valve body and second valve body, the first valve body and second valve body are respectively connected between one end, and the other end is used for connecting with the fluid pipeline the first valve body, second valve body includes tubular body and rotatably arranged in the ball in tubular body, and the ball is provided with a flow channel through hole on one diameter as the rotation axis, when the ball rotates to 0 degree position, the direction of flow channel through hole is perpendicular to the axial direction of tubular body and the outer circumferential surface of ball and the inner wall of tubular body are sealed, when the ball rotates to 90 degree position, the direction of flow channel through hole is parallel to the axial direction of tubular body and the internal flow channel between the tubular body on both sides of ball is guided through the flow channel through hole on the ball.

[0005] The tubular body has a strip-shaped guide groove on one end face 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 groove by a spring. A rotating handle is provided on the outside of the tubular body. The other end of the rotating handle, which is free at one end, has a protrusion extending towards the tubular body. One end of a connecting block is connected to the protrusion, and the other end of the connecting block passes through the tubular body and is embedded in the ball. A bolt passes through the protrusion and the connecting block in sequence and is connected to the ball. A drive ring is fitted on the outside of the protrusion. A push pin is movably disposed between the drive ring and the movable pin that can move axially along the tubular body. The drive ring, which is fixedly connected to the protrusion of the rotating handle and / or the connecting block, has a circumferentially extending strip groove. The push pin has a radially outward extending convex portion on the side surface opposite to one end of the movable pin. The convex portion is slidably embedded in the strip groove extending at least a quarter circumference. The distance between the two side walls of the strip groove and the rotation center of the drive ring gradually changes in its extension direction. 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 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 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 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 drive ring is embedded in the annular relief groove. When the ball rotates to the 0° position with the rotating handle, the end of the push pin opposite to the drive ring is in abutting contact with the side wall of the movable pin, and the end of the movable pin opposite to the 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, the connecting block and the protrusion are connected by at least two sets of positioning pins and positioning grooves.

[0009] 2. In the above scheme, the drive ring and the connecting block are connected by welding.

[0010] 3. In the above scheme, a sealing ring is provided between the outer circumferential surface of the connecting block and the tubular body.

[0011] 4. In the above scheme, the surface of the drive ring has a wear-resistant layer.

[0012] 5. The valve body of the preceding scheme, the tubular body is used to be sleeved with an outer sealing ring outside the end surface of the one end of the tubular body connected with the tubular body of another valve body, and the second annular flange is provided with an inner sealing ring on the side opposite to the ball.

[0013] Compared with the prior art, the utility model has the following advantages due to the use of the technical scheme:

[0014] The utility model discloses a two -way connection's switch valve subassembly, first valve body, second valve body all include tubular body and rotatable ball of setting in tubular body, and the tubular body is used to open a strip -shaped guide groove on the end face of one end of the tubular body connected with the tubular body of another valve body, and one end of a movable pin shaft is embedded in the strip -shaped guide groove and is connected with the bottom surface of the strip -shaped guide groove through a spring, and the tubular body outside is provided with a rotating handle, and the other end of the rotating handle of one end is free has a convex part extending to the tubular body direction, and one end of a connecting block is connected with the convex part, and the other end of the connecting block passes through the tubular body and is embedded in the ball, and a bolt passes through the convex part on the rotating handle and the connecting block in proper order and is connected with the ball, and the convex part outside is sleeved with a drive ring, and the movable pin shaft that can move along the axial direction of the tubular body is movably arranged between the drive ring, and a strip -shaped groove extending along the circumferential direction is opened in the drive ring fixedly connected with the convex part of the rotating handle and / or the connecting block, and the side surface opposite one end of the movable pin shaft has a convex strip part extending radially outward, and the convex strip part is slidably embedded in the strip -shaped groove extending on at least a quarter of the circumference, and the distance between the side wall of the strip -shaped groove and the rotation center of the drive ring gradually changes in its extension direction, and the side wall of the movable pin shaft in sliding contact with the inner wall of the strip -shaped guide groove is opened in an annular accommodation groove, when the first valve body and the second valve body are connected with each other, the movable pin shaft between them is extruded and contacted each other, so that one end of the movable pin shaft is flush with the end surface of the corresponding tubular body, the other end of the movable pin shaft compresses the spring in the strip -shaped guide groove, and the annular accommodation groove on the movable pin shaft is consistent with the corresponding push pin, when the first valve body and the second valve body are separated from each other, the movable pin shaft of each can be stretched out of the end surface of the tubular body under the action of the spring, when the annular accommodation groove is consistent with the corresponding push pin and the ball rotates to 90 ° position along with the rotating handle, the end of the push pin opposite the drive ring is embedded in the annular accommodation groove, when the ball rotates to 0 ° position along with the rotating handle, the end of the push pin opposite the drive ring is in contact with the side wall of the movable pin shaft and the end of the movable pin shaft opposite the spring is stretched out of the end surface of the tubular body, which can open the large -flow fluid passage between the two valve bodies when they are connected, can close the large -flow fluid passage connected by each when the two valve bodies are separated, and can ensure the stability of the closed fluid passage, avoid the abnormal opening of the flow channel caused by misoperation or misoperation, ensure the safety and stability in the use process, and facilitate the replacement of the damaged parts. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 2 is a structural schematic view of a single valve body of the bidirectional connection switch valve assembly of the present application; Figure 1 Figure 3 is a structural schematic view of a 0° state of the single valve body of the bidirectional connection switch valve assembly of the present application;

[0016] Figure 4 is a structural schematic view of a 90° state of the single valve body of the bidirectional connection switch valve assembly of the present application; Figure 2 Figure 5 is a structural schematic view of a 0° state of the single valve body of the bidirectional connection switch valve assembly of the present application;

[0017] Figure 6 is a structural schematic view of a 90° state of the single valve body of the bidirectional connection switch valve assembly of the present application; Figure 3 Figure 7 is a cross-sectional view along A-A of the bidirectional connection switch valve assembly of the present application; Figure 2 Figure 8 is a partial structural cross-sectional view of the single valve body of the bidirectional connection switch valve assembly of the present application;

[0018] Figure 9 is a partial structural schematic view of the single valve body of the bidirectional connection switch valve assembly of the present application; Figure 4 Figure 10 is a partial structural schematic view of the single valve body of the bidirectional connection switch valve assembly of the present application;

[0019] Figure 11 is a comparative schematic view of the 0° and 90° states of the single valve body of the bidirectional connection switch valve assembly of the present application. Figure 5 Figure 12 is a comparative schematic view of the 0° and 90° states of the single valve body of the bidirectional connection switch valve assembly of the present application.

[0020] Figure 6 Figure 13 is a comparative schematic view of the 0° and 90° states of the single valve body of the bidirectional connection switch valve assembly of the present application.

[0021] In the above figures: 1, tubular body; 2, ball; 3, flow passage through hole; 4, rotating handle; 41, protruding portion; 5, sealing ring; 61, first annular flange; 62, second annular flange; 7, rotating shaft; 8, connecting block; 9, bolt; 10, driving ring; 11, strip-shaped groove; 12, protruding strip portion; 131, positioning column; 132, positioning groove; 151, strip-shaped guide groove; 152, movable pin shaft; 16, spring; 17, push pin; 19, annular accommodation groove; 20, annular pushing groove; 21, first valve body; 22, second valve body; 241, clamping protrusion; 242, clamping groove; 251, outer sealing ring; 252, inner sealing ring. DETAILED DESCRIPTION

[0022] The present patent can be further understood from the specific embodiments given below, which are not limiting of the present patent.

[0023] ​Embodiment 1: a bidirectional connection switch valve assembly, comprising: a first valve body 21 and a second valve body 22, each of which is detachably connected between one end and the other end for connecting with a fluid pipeline, the first valve body 21 and the second valve body 22 each comprise a tubular body 1 and a ball 2 rotatably arranged in the tubular body 1, a flow passage through hole 3 is formed on the ball 2 with a diameter as a rotation axis, when the ball 2 rotates to 0° position, the direction of the flow passage through hole 3 is perpendicular to the axial direction of the tubular body 1 and the outer circumferential surface of the ball 2 is in sealing fit with the inner wall of the tubular body 1, when the ball 2 rotates to 90° position, the direction of the flow passage through hole 3 is parallel to the axial direction of the tubular body 1 and the internal flow passages of the tubular body 1 on both sides of the ball 2 are connected through the flow passage through hole 3 on the ball 2;

[0024] A strip-shaped guide groove 151 is formed on the end face of the end for connecting with the tubular body 1 of the other valve body, one end of a movable pin shaft 152 is embedded in the strip-shaped guide groove 151 and connected with the bottom surface of the strip-shaped guide groove 151 through a spring 16, a rotating handle 4 is arranged outside the tubular body 1, one end of the rotating handle 4 is a free end, the other end of the rotating handle 4 has a protruding part 41 extending to the tubular body 1, one end of a connecting block 8 is connected with the protruding part 41, the other end of the connecting block 8 passes through the tubular body 1 and is embedded in the ball 2, a bolt 9 passes through the protruding part 41 and the connecting block 8 on the rotating handle 4 in sequence and is connected with the ball 2, a driving ring 10 is sleeved outside the protruding part 41, a push pin 17 is movably arranged between the driving ring 10 and the movable pin shaft 152 which can move along the axial direction of the tubular body 1, a strip-shaped groove 11 extending in the circumferential direction is formed on the driving ring 10 fixedly connected with the protruding part 41 and / or the connecting block 8 of the rotating handle 4, a convex strip part 12 extending radially outward is formed on the side surface of the push pin 17 opposite to one end of the movable pin shaft 152, the convex strip part 12 is slidably embedded in the strip-shaped groove 11 extending at least one quarter of the circumferential direction, the distance between each side wall of the strip-shaped groove 11 and the rotation center of the driving ring 10 gradually changes in the extension direction, a ring-shaped accommodation groove 19 is formed on the side wall of the movable pin shaft 152 in sliding contact with the inner wall of the strip-shaped guide groove 151;

[0025] When the first valve body 21 and the second valve body 22 are connected to each other, the mutual extrusion contact between the respective movable pin shafts 152 makes one end of the movable pin shaft 152 flush with the end face of the corresponding tubular body 1, the other end compresses the spring 16 into the strip-shaped guide groove 151, and the annular accommodation groove 19 on the movable pin shaft 152 is in height alignment with the corresponding push pin 17. When the first valve body 21 and the second valve body 22 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 spring 16. When the annular accommodation groove 19 is in height 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 away from the driving ring 10 is embedded in the annular accommodation groove 19. When the ball 2 is rotated to the 0° position with the rotating handle 4, the end of the push pin 17 away from the driving ring 10 is in pressing contact with the side wall of the movable pin shaft 152, and the end of the movable pin shaft 152 away from the spring 16 extends out of the end face of the tubular body 1.

[0026] The connection block 8 and the protruding part 41 are connected through the cooperation of at least two groups of positioning columns 131 and positioning grooves 132.

[0027] The driving ring 10 and the connection block 8 are connected by welding; the outer circumferential surface of the connection block 8 and the tubular body 1 are provided with a sealing ring; and the surface of the driving ring 10 has a wear-resistant layer.

[0028] The outer side of one end of the tubular body 1 for connecting with the tubular body 1 of another valve body is sleeved with an outer sealing ring 251, and the side of the second annular flange 62 away from the ball 2 is provided with an inner sealing ring 252.

[0029] The end face of one end of the tubular body 1 for connecting with the tubular body 1 of another valve body is respectively provided with at least one clamping protrusion 241 and at least one clamping groove 242 corresponding to the clamping protrusion 241, and the first valve body 21 and the second valve body 22 are connected through the cooperation of the clamping protrusions 241 and the clamping grooves 242.

[0030] The two clamping protrusions 241 and the two clamping grooves 242 are arranged in a circumferential direction of the tubular body 1 and are spaced and staggered.

[0031] A sealing ring 5 is arranged between the inner wall of the tubular body 1 and the outer circumferential surface of the ball 2; 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, and the sealing ring 5 is arranged between the second annular flange 62 and the ball 2.

[0032] Embodiment 2: a bidirectional connection switch valve assembly, comprising: a first valve body 21 and a second valve body 22, each of which is detachably connected between one end and the other end for connecting with a fluid pipeline, the first valve body 21 and the second valve body 22 each comprise a tubular body 1 and a ball 2 rotatably arranged in the tubular body 1, a flow passage through hole 3 is formed on the ball 2 with a diameter as a rotation axis, when the ball 2 rotates to 0° position, the direction of the flow passage through hole 3 is perpendicular to the axial direction of the tubular body 1 and the outer circumferential surface of the ball 2 is in sealing fit with the inner wall of the tubular body 1, when the ball 2 rotates to 90° position, the direction of the flow passage through hole 3 is parallel to the axial direction of the tubular body 1 and the internal flow passages of the tubular body 1 on both sides of the ball 2 are connected through the flow passage through hole 3 on the ball 2;

[0033] A shaped guide slot 151 is formed on the end face of the end for connecting with the tubular body 1 of the other valve body, one end of a movable pin shaft 152 is embedded in the shaped guide slot 151 and connected with the bottom surface of the shaped guide slot 151 through a spring 16, a rotating handle 4 is arranged outside the tubular body 1, one end of the rotating handle 4 is a free end, the other end of the rotating handle 4 has a protruding part 41 extending towards the tubular body 1, one end of a connecting block 8 is connected with the protruding part 41, the other end of the connecting block 8 passes through the tubular body 1 and is embedded in the ball 2, a bolt 9 passes through the protruding part 41 and the connecting block 8 on the rotating handle 4 in sequence and is connected with the ball 2, a driving ring 10 is sleeved outside the protruding part 41, a push pin 17 is movably arranged between the driving ring 10 and the movable pin shaft 152 which can move along the axial direction of the tubular body 1, a shaped slot 11 extending along the circumferential direction is formed on the driving ring 10 fixedly connected with the protruding part 41 and / or the connecting block 8 of the rotating handle 4, a convex strip part 12 extending radially outward is formed on the side surface of the push pin 17 opposite to one end of the movable pin shaft 152, the convex strip part 12 is slidably embedded in the shaped slot 11 extending at least one quarter of the circumferential direction, the distance between each side wall of the shaped slot 11 and the rotation center of the driving ring 10 gradually changes in the extending direction, a ring-shaped accommodation slot 19 is formed on the side wall of the movable pin shaft 152 in sliding contact with the inner wall of the shaped guide slot 151;

[0034] When the first valve body 21 and the second valve body 22 are connected to each other, the mutual extrusion contact between the respective movable pin shafts 152 makes one end of the movable pin shaft 152 flush with the end face of the corresponding tubular body 1, the other end compresses the spring 16 into the strip-shaped guide groove 151, and the annular accommodation groove 19 on the movable pin shaft 152 is in height alignment with the corresponding push pin 17. When the first valve body 21 and the second valve body 22 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 spring 16. When the annular accommodation groove 19 is in height 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 away from the driving ring 10 is embedded in the annular accommodation groove 19. When the ball 2 is rotated to the 0° position with the rotating handle 4, the end of the push pin 17 away from the driving ring 10 is in pressing contact with the side wall of the movable pin shaft 152, and the end of the movable pin shaft 152 away from the spring 16 extends out of the end face of the tubular body 1.

[0035] The connection block 8 and the protruding part 41 are connected through the cooperation of at least two groups of positioning columns 131 and positioning grooves 132.

[0036] A sealing ring is arranged between the outer circumferential surface of the connection block 8 and the tubular body 1.

[0037] A sealing ring 5 is arranged between the inner wall of the tubular body 1 and the outer circumferential surface of the ball 2.

[0038] 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.

[0039] The end face of the end of the push pin 17 away from the driving ring 10 is an outward convex arc surface.

[0040] The two opposite side walls of the annular accommodation groove 19 are arranged as slope surfaces matched with the end face of the push pin 17.

[0041] An annular pushing groove 20 communicating with the annular accommodation groove 19 and having a depth smaller than that of the annular accommodation groove 19 is arranged on the movable pin shaft 152 near the side of the 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 pressing contact with the bottom surface of the annular pushing groove 20.

[0042] The side wall of the annular pushing groove 20 away from the annular accommodation groove 19 is arranged as a slope surface matched with the end face of the push pin 17.

[0043] The side of the ball 2 away from the connection block 8 is connected with the inner wall of the tubular body 1 through a rotating shaft 7.

[0044] The working principle of the utility model is as follows:

[0045] In use, the flow channels in the interiors of the first valve body and the second valve body are both in a closed state, and then one end of each of the first valve body and the second valve body is connected with an external fluid pipeline, the first valve body and the second valve body can be connected with each other or separated from each other, and the specific connection mode can be achieved by using the conventional means of the prior art, which will not be described herein;

[0046] When the first valve body and the second valve body are separated from each other, the flow channels controlled by the first valve body and the second valve body can be closed to avoid fluid overflow, and when the first valve body and the second valve body are stably connected, the flow channels controlled by the first valve body and the second valve body can be opened, so that the flow channels between the pipelines connected by the first valve body and the second valve body are in communication;

[0047] For a single valve body:

[0048] When it is needed to switch the flow channel from the closed state to the open state, the movable pin shaft is first pressed into the strip-shaped guide groove to move the movable pin shaft to the spring direction and press the spring until the annular recess in the movable pin shaft is aligned with the push pin, and then the rotating handle is driven to rotate so that the ball body rotating with the rotating handle is rotated from the 0° position to the 90° position, the distance H1 between the contact position of the strip-shaped groove on the driving ring and the convex strip part on the push pin and the rotating center of the driving ring at the 0° position is less than the distance H2 between the contact position of the strip-shaped groove on the driving ring and the convex strip part on the push pin and the rotating center of the driving ring at the 90° position; during the rotation of the rotating handle, the push pin gradually moves to the movable pin shaft direction under the action of the strip-shaped groove on the driving ring until the end of the push pin is embedded in the strip-shaped guide groove on the movable pin shaft; the direction of the flow channel through hole on the ball body at the 90° position is parallel to the axial direction of the tubular body, and the internal flow channels of the tubular bodies on both sides of the ball body are in communication through the flow channel through hole on the ball body, and the flow channel is opened;

[0049] When it is needed to switch the flow channel from the open state to the closed state, the rotating handle needs to be driven to rotate so that the ball body rotating with the rotating handle is rotated from the 90° position to the 0° position, and in this process, the push pin moves away from the movable pin shaft under the action of the strip-shaped groove on the driving ring to be extracted from the strip-shaped guide groove on the movable pin shaft, and at the same time, the movable pin shaft is reset under the action of the spring so that one end of the movable pin shaft protrudes from the end face of the tubular body and the outer side wall of the movable pin shaft is in abutting contact with one end of the push pin to limit the rotating handle, thereby avoiding the rotating handle from rotating due to misoperation or accidental touch; the direction of the flow channel through hole on the ball body at the 0° position is perpendicular to the axial direction of the tubular body, and the outer circumferential surface of the ball body is in sealing fit with the inner wall of the tubular body, and the flow channel is closed;

[0050] When the first valve body and the second valve body are stably connected, the mutual extrusion contact between the movable pin shafts of the two valve bodies makes one end of the movable pin shaft flush with the end face of the corresponding tubular body, the other end of the movable pin shaft compresses the spring in the strip-shaped guide groove, and the annular accommodation groove on the movable pin shaft is in height with the corresponding push pin, so as to facilitate the switching of the flow channels of the two valve bodies from the closed state to the open state.

[0051] When it is needed to detach the first valve body and the second valve body from each other, the flow channels of the two valve bodies need to be closed first.

[0052] When the first valve body and the second valve body are completely detached, the movable pin shafts of the two valve bodies are reset to protrude out of the end face of the tubular body under the action of the spring, one end of the push pin is in abutting contact with the outer side wall of the movable pin shaft to limit the rotation of the handle, so as to avoid the rotation of the handle due to misoperation or accidental touch.

[0053] When the above-mentioned bidirectional connection switch valve assembly is used, it can not only open the large-flow fluid channel between the two valve bodies when the two valve bodies are connected with each other, but also close the large-flow fluid channels connected with the two valve bodies respectively when the two valve bodies are separated, and ensure the stability of the fluid channel in the closed state, avoid the abnormal opening of the flow channel due to misoperation or accidental touch, ensure the safety and stability in use, and facilitate the replacement of the vulnerable parts.

[0054] The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable people skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A bidirectionally connected on-off valve assembly comprising: The first valve body (21) and the second valve body (22) are detachably connected between one end of each of the first valve body (21) and the second valve body (22) and the other end of each of the first valve body (21) and the second valve body (22) for connecting with a fluid pipeline, characterized in that: the first valve body (21) and the second valve body (22) each comprise a tubular body (1) and a ball (2) rotatably arranged in the tubular body (1), a flow passage through hole (3) is formed in the ball (2) along a direction perpendicular to the rotation axis of the ball (2), when the ball (2) is rotated to a 0° position, the direction of the flow passage through hole (3) is perpendicular to the axial direction of the tubular body (1) and the outer circumferential surface of the ball (2) is in sealing fit with the inner wall of the tubular body (1), when the ball (2) is rotated to a 90° position, the direction of the flow passage through hole (3) is parallel to the axial direction of the tubular body (1) and the internal flow passages of the tubular body (1) on both sides of the ball (2) are communicated through the flow passage through hole (3) on the ball (2); A strip-shaped guide groove (151) is formed on the end face of the tubular body (1) for connecting with the tubular body (1) of the other valve body, one end of a movable pin shaft (152) is embedded in the strip-shaped guide groove (151) and connected with the bottom surface of the strip-shaped guide groove (151) through a spring (16), a rotating handle (4) is arranged outside the tubular body (1), one end of the rotating handle (4) is a free end, the other end of the rotating handle (4) has a protruding part (41) extending towards the tubular body (1), one end of a connecting block (8) is connected with the protruding part (41), the other end of the connecting block (8) penetrates through the tubular body (1) and is embedded in the ball (2), a bolt (9) penetrates through the protruding part (41) and the connecting block (8) on the rotating handle (4) in sequence and is connected with the ball (2), a driving ring (10) is sleeved outside the protruding part (41), a push pin (17) is movably arranged between the driving ring (10) and the movable pin shaft (152) which can move along the axial direction of the tubular body (1), a strip-shaped groove (11) extending along the circumferential direction is formed on the driving ring (10) fixedly connected with the protruding part (41) and / or the connecting block (8) of the rotating handle (4), a convex strip part (12) extending radially outward is formed on the side surface of the push pin (17) opposite to one end of the movable pin shaft (152), the convex strip part (12) is slidably embedded in the strip-shaped groove (11) extending on at least one quarter of the circumferential direction, the distance between each of the two side walls of the strip-shaped groove (11) and the rotating center of the driving ring (10) gradually changes in the extension direction thereof, and an annular accommodation groove (19) is formed on the side wall of the movable pin shaft (152) in sliding contact with the inner wall of the strip-shaped guide groove (151). When the first valve body (21) and the second valve body (22) are connected to each other, the mutual extrusion contact between the respective movable pin shafts (152) makes one end of the movable pin shaft (152) flush with the end face of the corresponding tubular body (1), the other end compresses the spring (16) into the strip-shaped guide groove (151), and the annular accommodation groove (19) on the movable pin shaft (152) is in line with the corresponding push pin (17). When the first valve body (21) and the second valve body (22) 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 spring (16). When the annular accommodation groove (19) is in line with the corresponding push pin (17) and the ball (2) rotates to the 90° position with the rotating handle (4), the end of the push pin (17) opposite to the driving ring (10) is embedded in the annular accommodation groove (19). When the ball (2) rotates to the 0° position with the rotating handle (4), the end of the push pin (17) opposite to the driving ring (10) is in abutting contact with the side wall of the movable pin shaft (152), and the end of the movable pin shaft (152) opposite to the spring (16) extends out of the end face of the tubular body (1).

2. The bidirectionally connected on-off valve assembly of claim 1, wherein: The connecting block (8) and the protruding part (41) are connected through at least two groups of positioning columns (131) and positioning grooves (132).

3. The bidirectionally connected on-off valve assembly of claim 1, wherein: The driving ring (10) and the connecting block (8) are connected by welding.

4. The bidirectionally connected on-off valve assembly of claim 1, wherein: A sealing ring is arranged between the outer circumferential surface of the connecting block (8) and the tubular body (1).

5. The bidirectionally connected on-off valve assembly of claim 1, wherein: The surface of the driving ring (10) has a wear-resistant layer.

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