Self-locking valve joint

Abstract

The utility model discloses a self-locking type valve connector which comprises a tubular body and a pipeline connector installed at one end of the tubular body, the two ends of a strip-shaped through hole in the outer side wall of the tubular body are connected with the two ends of a strip-shaped groove in the inner side wall of the tubular body, and an annular groove in the outer side wall of the pipeline connector is connected with the strip-shaped groove through a flexible rib. A strip-shaped guide groove is formed in the tubular body, one end of a movable pin shaft is embedded in the strip-shaped guide groove and connected with the bottom face through a spring, a rotating handle is arranged on the outer side of the tubular body, and a driving ring is arranged on the outer side of a protruding portion of the rotating handle in a sleeved mode. On the basis of quickly opening and closing the fluid channel, the pipeline connection is facilitated, the convenience and the stability of the connection can be ensured, the condition of loose connection caused by rotation in the connection process is avoided, the stability in the closing state can be ensured, the abnormal opening is avoided, and the replacement of damageable parts is also facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self-locking type valve joint belongs to liquid cooling technical field. BACKGROUND

[0002] At present, the traditional server cabinet mainly adopts the air cooling heat dissipation mode, which is not only high in cooling energy consumption, loud in noise, but also leads to large cabinet size. With the increase of the heat density of the cabinet, the traditional server cabinet can not meet the demand of the computer room, and the liquid cooling server cabinet emerges as the times require. Its basic principle is: the cooling medium is passed into the cabinet, and the heat of the main heating elements in each liquid cooling server is taken away through heat exchange. Compared with the traditional server cabinet, the liquid cooling server cabinet not only has large heat exchange density, but also has good energy-saving effect; in addition, the use of the liquid cooling server cabinet can also reduce the noise, and it is also easier to realize the recycling of heat energy.

[0003] The liquid cooling circuit and the cabinet are connected through the valve joint to make the liquid cooling circuit through, so as to realize the purpose of circulating heat exchange. In the prior art, the valve joint is prone to unstable state during connection, which leads to liquid overflow. SUMMARY

[0004] The utility model aims at providing a self-locking type valve joint, which can realize the opening and closing of the fluid passage quickly, facilitate the connection of the pipeline, ensure the convenience and stability of the connection, avoid the loosening of the connection caused by rotation during the connection process, ensure the stability in the closed state, avoid abnormal opening, and facilitate the replacement of the vulnerable parts.

[0005] The utility model discloses a self-locking valve joint, which comprises a tubular body and a pipeline joint installed at one end of the tubular body, a ball is rotatably arranged inside the other end of the tubular body, a flow channel through hole is formed in the ball along a diameter as a rotation axis, when the ball rotates to a 0° position, the direction of the flow channel through hole is perpendicular to the axial direction of the tubular body, and the outer circumferential surface of the ball is in sealing engagement with the inner wall of the tubular body, when the ball rotates to a 90° position, the direction of the flow channel through hole is parallel to the axial direction 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, a strip-shaped through hole extending in the circumferential direction is formed in the outer side wall of the tubular body close to the one end of the pipeline joint, a strip-shaped groove extending in the circumferential direction is formed in the inner side wall of the tubular body, the two ends of the strip-shaped groove are connected with the two ends of the strip-shaped through hole respectively, an annular groove extending in the whole circumferential direction and corresponding to the strip-shaped groove is formed in the outer side wall of the pipeline joint, the pipeline joint embedded in the tubular body is connected with the tubular body through a flexible rib embedded in the annular groove and the strip-shaped groove respectively.

[0006] A strip-shaped guide groove is formed in the end face of the tubular body close to the ball, one end of a movable pin shaft is embedded in the strip-shaped guide groove and connected with the bottom surface of the strip-shaped guide groove through a spring, the other end of the movable pin shaft can extend out of the end face of the tubular body under the action of the spring, a rotating handle is arranged outside the tubular body, the other end of the rotating handle with a free end has a protruding part extending towards the tubular body, one end of a connecting block is connected with the protruding part, the other end of the connecting block passes through the tubular body and is embedded in the ball, a bolt passes through the protruding part on the rotating handle, the connecting block and the ball in sequence, a driving ring is sleeved outside the protruding part, a push pin movably arranged between the driving ring and the movable pin shaft which can move along the axial direction of the tubular body has a convex strip part extending radially and outwardly on the side surface opposite to one end of the movable pin shaft, the convex strip part is slidably embedded in the strip-shaped groove extending at least one quarter of a circumference, the distance between the two side walls of the strip-shaped groove and the rotation center of the driving ring gradually changes in the extension direction.

[0007] The side wall of the movable pin shaft in sliding contact with the inner wall of the strip-shaped guide groove is provided with an annular accommodation groove, when the movable pin shaft is pushed into the strip-shaped guide groove and the ball rotates to the 90° position along the rotating handle, the end of the push pin away from the driving ring is embedded into the annular accommodation groove, when the ball rotates to the 0° position along the rotating handle, the end of the push pin away from the driving ring is in abutting contact with the side wall of the movable pin shaft and the end of the movable pin shaft away from the spring protrudes from the end face of the tubular body.

[0008] The further improved scheme in the above technical scheme is as follows:

[0009] 1. In the above scheme, the side wall of the pipe joint away from the one end of the tubular body is provided with a thread for connecting with the external pipe.

[0010] 2. In the above scheme, the flexible rib is a metal wire.

[0011] 3. In the above scheme, the outer side wall of the pipe joint and the inner side wall of the tubular body are sealed and matched by at least two joint sealing rings distributed along the axial direction.

[0012] 4. In the above scheme, the side of the ball away from the connecting block is connected with the inner wall of the tubular body through a rotating shaft.

[0013] 5. In the above scheme, the end face of the end of the push pin away from the driving ring is an outward convex arc face.

[0014] Due to the use of the above technical scheme, the utility model has the following advantages compared with the prior art:

[0015] The utility model discloses a self-locking valve joint, which is characterized in that a strip-shaped through hole extending in the circumferential direction is formed on the outer side wall of the tubular body near one end of the pipeline joint, a strip-shaped groove extending in the circumferential direction is formed on the inner side wall of the tubular body, the two ends of the strip-shaped groove are connected with the two ends of the strip-shaped through hole respectively, an annular groove extending in the full circumferential direction and corresponding to the strip-shaped groove is formed on the outer side wall of the pipeline joint, the pipeline joint embedded in the tubular body at one end is connected with the tubular body through flexible ribs embedded in the annular groove and the strip-shaped groove respectively, on the basis of quickly realizing the opening and closing of the fluid passage, the tubular body can be connected with the external pipeline through the pipeline joint, and the convenience of the connection between the pipeline joint and the tubular body and the stability of the connection state can be ensured, the loosening of the connection between the pipeline joint and the tubular body caused by rotation during the connection of the pipeline joint and the external pipeline is avoided, and the reliability in use is improved; in addition, a rotating handle is arranged on the outer side of the tubular body, the other end of the rotating handle with one end being a free end is provided with a protruding part extending in the direction of the tubular body, one end of a connecting block is connected with the protruding part, the other end of the connecting block passes through the tubular body and is embedded in a spherical body, a bolt passes through the protruding part on the rotating handle and the connecting block in sequence and is connected with the spherical body, a driving ring is sleeved on the outer side of the protruding part, a push pin movably arranged between the driving ring and a movable pin shaft that can move in the axial direction of the tubular body is provided, a strip-shaped groove extending in the circumferential direction is formed on the driving ring fixedly connected with the protruding part of the rotating handle and / or the connecting block, a convex strip part extending radially outward is arranged on the side surface of the push pin away from one end of the movable pin shaft, the convex strip part is slidably embedded in the strip-shaped groove extending on at least one fourth of the circumference, the distance between the two side walls of the strip-shaped groove and the rotation center of the driving ring gradually changes in the extension direction, an annular accommodation groove is formed on the side wall of the movable pin shaft in sliding contact with the inner wall of the strip-shaped guide groove, when the movable pin shaft is pushed into the strip-shaped guide groove and the spherical body rotates to the 90° position along with the rotating handle, one end of the push pin away from the driving ring is embedded in the annular accommodation groove, when the spherical body rotates to the 0° position along with the rotating handle, one end of the push pin away from the driving ring is in abutting contact with the side wall of the movable pin shaft, and the end of the movable pin shaft away from the spring protrudes from the end face of the tubular body, the opening and closing of the fluid passage with large flow rate can be quickly realized, the stability of the fluid passage in the closed state can be ensured, the abnormal opening of the flow channel caused by misoperation or accidental touch is avoided, the safety during use is ensured, and the replacement of the vulnerable parts is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] ATTACHMENT Figure 1 It is the overall structure schematic diagram of the self-locking valve joint of the utility model in the 0° state.

[0017] ATTACHMENT Figure 2 It is the overall structure schematic diagram of the self-locking valve joint of the utility model in the 0° state. Figure 1 It is the cross section schematic diagram along A-A.

[0018] ATTACHMENTFigure 3 It is the whole structure schematic view of the self-locking type valve joint of the utility model;

[0019] The Figure 4 It is the whole structure schematic view of the self-locking type valve joint of the utility model Figure 3 It is the section view along B-B of the utility model;

[0020] The Figure 5 It is the structure schematic view of the self-locking type valve joint of the utility model under 90 ° state;

[0021] The Figure 6 It is the partial structure section view of the self-locking type valve joint of the utility model;

[0022] The Figure 7 It is the structure schematic view of the movable pin shaft of the self-locking type valve joint of the utility model;

[0023] The Figure 8 It is the partial structure contrast schematic view of the utility model under 0 ° and 90 ° state.

[0024] In the above drawing: 1, tubular body; 2, ball; 3, flow passage through hole; 4, rotating handle; 41, convex part; 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 slot; 12, convex strip part; 131, positioning column; 132, positioning slot; 14, strip-shaped through hole; 151, strip-shaped guide slot; 152, movable pin shaft; 16, spring; 17, push pin; 18, strip-shaped recess; 19, annular accommodation slot; 20, annular push slot; 21, annular recess; 22, flexible rib; 23, pipeline joint; 24, joint sealing ring; 251, outer sealing ring; 252, inner sealing ring. DETAILED DESCRIPTION

[0025] The specific embodiments given below can further clearly understand the patent, but they are not the limitation of the patent.

[0026] Embodiment 1: A self-locking valve joint, comprising: a tubular body 1 and a pipe joint 23 mounted on one end of the tubular body 1, a ball 2 rotatably arranged inside the other end of the tubular body 1, a flow passage hole 3 is formed on the ball 2 along a diameter as a rotation axis, the direction of the flow passage 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 engagement with the inner wall of the tubular body 1 when the ball 2 is rotated to 0° position, the direction of the flow passage 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 hole 3 on the ball 2 when the ball 2 is rotated to 90° position, a strip-shaped hole 14 is formed on the outer side wall of the tubular body 1 near the end of the pipe joint 23 and extends along the circumferential direction, a strip-shaped groove 18 is formed on the inner side wall of the tubular body 1 and extends along the circumferential direction, the two ends of the strip-shaped groove 18 are connected with the two ends of the strip-shaped hole 14 respectively, an annular groove 21 is formed on the outer side wall of the pipe joint 23 and extends along the whole circumferential direction and is arranged corresponding to the strip-shaped groove 18, the pipe joint 23 embedded in the tubular body 1 is connected with the tubular body 1 through a flexible rib 22 embedded in the annular groove 21 and the strip-shaped groove 18 respectively;

[0027] A strip-shaped guide groove 151 is formed on the end face of the tubular body 1 near the ball 2, 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, the other end of the movable pin shaft 152 can extend out of the end face of the tubular body 1 under the action of the spring 16, a rotating handle 4 is arranged outside the tubular body 1, the other end of the rotating handle 4 with a free end 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 strip-shaped groove 11 extending along the circumferential direction is formed on the driving ring 10 fixedly connected with the protruding part 41 and 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 away from one end of the movable pin shaft 152, the convex strip part 12 is slidably embedded in the strip-shaped groove 11 extending along at least one quarter of the circumferential direction, the distance between the two side walls of the strip-shaped groove 11 and the rotation center of the driving ring 10 gradually changes in the extending direction;

[0028] The side wall of the movable pin shaft 152 in sliding contact with the inner wall of the strip-shaped guide groove 151 is provided with an annular accommodation groove 19. When the movable pin shaft 152 is pressed into the strip-shaped guide groove 151 and the ball 2 is rotated to the 90° position along 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 along with the rotating handle 4, the end of the push pin 17 away from 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 away from the spring 16 protrudes out of the end face of the tubular body 1.

[0029] When it is necessary to switch the flow channel from the closed state to the open state, first, the movable pin shaft needs to be pressed into the strip-shaped guide groove so that the movable pin shaft moves in the direction of the spring and presses the spring until the annular accommodation groove on the movable pin shaft is aligned with the push pin. Then, the rotating handle is driven to rotate so that the ball rotating along 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 in the direction of the movable pin shaft 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 at the 90° position is parallel to the axial direction of the tubular body, and the internal flow channels on both sides of the tubular body are connected through the flow channel through hole on the ball, and the flow channel is opened.

[0030] The side wall of the tubular body 1 away from one end of the tubular body 1 is provided with a thread for connecting with an external pipeline; the flexible rib 22 is a metal wire; and the flexible rib 22 is a steel wire.

[0031] The ball 2 away from the connecting block 8 is connected with the inner wall of the tubular body 1 through a rotating shaft 7.

[0032] The connecting block 8 and the convex part 41 are connected through at least two groups of positioning columns 131 and positioning grooves 132; and the driving ring 10 and the connecting block 8 are connected through welding.

[0033] A sealing ring is arranged between the outer circumferential surface of the connecting block 8 and the tubular body 1; and the surface of the driving ring 10 has a wear-resistant layer.

[0034] The end face of the end of the push pin 17 away from the driving ring 10 is an outwardly convex arc surface.

[0035] The end face of the end of the push pin 17 away from the driving ring 10 is an outwardly convex arc surface.

[0036] A sealing ring 5 is arranged between the inner wall of the tubular body 1 at the end opposite the pipe joint 23 and the outer circumferential surface of the ball 2.

[0037] 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 at the end opposite the pipe joint 23, and 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.

[0038] An inner sealing ring 252 is arranged on the side of the second annular flange 62 opposite the ball 2.

[0039] The circumferentially extending strip-shaped grooves 18 are distributed over at least three quarters of the circumference.

[0040] Embodiment 2: A self-locking valve joint, comprising: a tubular body 1 and a pipe joint 23 arranged at one end of the tubular body 1, a ball 2 rotatably arranged inside the other end of the tubular body 1, the ball 2 having a diameter as a rotation axis, a flow passage through hole 3 is arranged on the ball 2 in a direction perpendicular to the rotation axis, when the ball 2 is rotated 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 is rotated 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, a strip-shaped through hole 14 extending in the circumferential direction is arranged on the outer side wall of the tubular body 1 close to the end of the pipe joint 23, a strip-shaped groove 18 extending in the circumferential direction is arranged on the inner side wall of the tubular body 1, the two ends of the strip-shaped groove 18 are respectively connected with the two ends of the strip-shaped through hole 14, an annular groove 21 extending in the whole circumferential direction and corresponding to the strip-shaped groove 18 is arranged on the outer side wall of the pipe joint 23, the pipe joint 23 embedded in the tubular body 1 is connected with the tubular body 1 through a flexible rib 22 embedded in the annular groove 21 and the strip-shaped groove 18 respectively;

[0041] Generally used in conjunction with fluid pipelines, it is used to switch the open and closed states of fluid flow within the pipeline. As a component connecting to external pipelines, one end of the pipeline connector is installed on the tubular body. When it is necessary to connect the pipeline connector to the tubular body, first, one end of the pipeline connector is embedded into the tubular body, so that the annular groove on the pipeline connector and the strip groove on the tubular body are at the same height. Then, one end of a flexible rib, such as an iron wire, is inserted from the strip through hole on the tubular body between the annular groove and the strip groove, and the iron wire is moved circumferentially in the area between the annular groove and the strip groove until it comes out from the strip through hole on the tubular body, thereby realizing the connection between the pipeline connector and the tubular body.

[0042] When the pipe joint is connected to the external pipe by rotation during subsequent use, the pipe joint and the tubular body can still maintain a stable connection when they rotate relative to each other.

[0043] A strip-shaped guide groove 151 is formed on the end face of the tubular body 1 near the sphere 2. 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 spring 16. The other end of the movable pin 152 can extend out of the end face of the tubular body 1 under the action of the spring 16. A rotating handle 4 is provided on the outside of the tubular body 1. The other end of the rotating handle 4, which is free at one end, has a protrusion 41 extending towards the tubular body 1. One end of a connecting block 8 is connected to the protrusion 41, and the other end of the connecting block 8 passes through the tubular body 1 and is embedded in the sphere 2. A bolt 9 passes through the protrusion 41 on the rotating handle 4 in sequence and... A connecting block 8 is connected to the ball 2. A drive ring 10 is fitted on the outside of the protrusion 41. A push pin 17 is movably provided between the drive ring 10 and the movable pin 152 that can move along the axial direction of the tubular body 1. A circumferentially extending strip groove 11 is opened on the drive ring 10, which is fixedly connected to the protrusion 41 of the rotating handle 4 or the connecting block 8. The push pin 17 has a radially outward extending convex part 12 on the side surface opposite to one end of the movable pin 152. The convex part 12 is slidably embedded in the strip groove 11 extending at least a quarter circumference. The distance between the two side walls of the strip groove 11 and the rotation center of the drive ring 10 gradually changes in its extension direction.

[0044] An annular clearance 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. When the movable pin 152 is pushed into the strip guide groove 151 and the ball 2 rotates to a 90° position with the rotating handle 4, the end of the push pin 17 away from the drive ring 10 is embedded in the annular clearance groove 19. When the ball 2 rotates to a 0° position with the rotating handle 4, the end of the push pin 17 away from the drive ring 10 is in abutting contact with the side wall of the movable pin 152 and the end of the movable pin 152 opposite to the spring 16 extends out of the end face of the tubular body 1.

[0045] 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 ball to rotate from the 90° position to the 0° position. During this process, the push pin also moves away from the movable pin shaft under the action of the strip groove on the drive ring, 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, is reset under the action of the spring, so that one end of it extends out of the end face of the tubular body and its outer wall presses against one end of the push pin to limit the rotating handle, preventing the rotating handle from rotating due to misoperation or accidental contact. 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, thus closing the flow channel.

[0046] The aforementioned flexible rib 22 is made of iron wire; the outer wall of the aforementioned pipe joint 23 and the inner wall of the tubular body 1 are sealed together by at least two joint sealing rings 24 spaced apart along the axial direction; the aforementioned at least two joint sealing rings 24 are located axially between the ball 2 and the flexible rib 22.

[0047] The sphere 2, located on the side opposite to the connecting block 8, is connected to the inner wall of the tubular body 1 via a rotating shaft 7.

[0048] The end face of the push pin 17 away from the drive ring 10 is a convex arc-shaped surface; the two opposite side walls of the annular relief groove 19 are set as sloping surfaces that cooperate with the end face of the push pin 17.

[0049] 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 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.

[0050] The side wall 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.

[0051] The inner or outer wall of the aforementioned pipe joint 23 is provided with threads for connecting to external pipes; an outer sealing ring 251 is fitted on the outer side of the tubular body 1 opposite to one end of the pipe joint 23.

[0052] The working principle of this utility model is as follows:

[0053] Generally used in conjunction with fluid pipelines, it is used to switch the open and closed states of fluid flow within the pipeline. As a component connecting to external pipelines, one end of the pipeline connector is installed on the tubular body. When it is necessary to connect the pipeline connector to the tubular body, first, one end of the pipeline connector is embedded into the tubular body, so that the annular groove on the pipeline connector and the strip groove on the tubular body are at the same height. Then, one end of a flexible rib, such as an iron wire, is inserted from the strip through hole on the tubular body between the annular groove and the strip groove, and the iron wire is moved circumferentially in the area between the annular groove and the strip groove until it comes out from the strip through hole on the tubular body, thereby realizing the connection between the pipeline connector and the tubular body.

[0054] When the pipe fitting is connected to the external pipe by rotation during subsequent use, the stable connection between the pipe fitting and the tubular body can still be maintained even when relative rotation occurs between them.

[0055] 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 axis towards the spring and squeeze the 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 contact position of the strip groove on the drive ring and the protrusion on the push pin and the rotation center of the drive ring is less than the distance H2 between the contact position of the strip groove on the drive ring and the protrusion on the push pin and the rotation center of the drive ring at the 90° position. During the rotation of the rotating handle, the push pin gradually moves towards the movable pin axis under the action of the strip groove on the drive ring 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.

[0056] 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 ball to rotate from the 90° position to the 0° position. During this process, the push pin also moves away from the movable pin shaft under the action of the strip groove on the drive ring, 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, is reset under the action of the spring, so that one end of it extends out of the end face of the tubular body and its outer wall presses against one end of the push pin to limit the rotating handle, preventing the rotating handle from rotating due to misoperation or accidental contact. 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, thus closing the flow channel.

[0057] When using the aforementioned self-locking valve connector, it not only quickly opens and closes the fluid channel, but also facilitates the connection of the tubular body to external pipelines via the pipe connector. This ensures the ease of connection and stability between the pipe connector and the tubular body, preventing loosening of the connection during connection and improving reliability. Furthermore, it allows for rapid opening and closing of high-flow-rate fluid channels while maintaining stability when the fluid channel is closed, preventing abnormal opening of the flow path due to misoperation or accidental contact, ensuring safety during use, and facilitating the replacement of easily damaged parts.

[0058] 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 self-locking valve connector, comprising: A tubular body (1) and a pipe connector (23) installed at one end of the tubular body (1) are 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 opened on the sphere (2) with one diameter as its axis of rotation in a direction perpendicular to its axis of rotation. When the sphere (2) rotates to the 0° position, the direction of the flow channel through hole (3) is perpendicular to the axis of the tubular body (1), and the outer circumferential surface of the sphere (2) is sealed to the inner wall of the tubular body (1). When the sphere (2) rotates to the 90° position, the direction of the flow channel through hole (3) is parallel to the axis of the tubular body (1), and the internal flow channel of the tubular body (1) located on both sides of the sphere (2) is... The channels are connected through the flow channel through hole (3) on the sphere (2). A strip-shaped through hole (14) extending in the circumferential direction is opened on the outer side wall of the tubular body (1) near the pipe connector (23). A strip-shaped groove (18) extending in the circumferential direction is opened on the inner side wall of the tubular body (1). The two ends of the strip-shaped groove (18) are respectively connected to the two ends of the strip-shaped through hole (14). An annular groove (21) extending in the full circumferential direction and corresponding to the strip-shaped groove (18) is opened on the outer side wall of the pipe connector (23). The pipe connector (23) embedded in the tubular body (1) at one end is connected to the tubular body (1) through a flexible rib (22) embedded in the annular groove (21) and the strip-shaped groove (18) respectively. A strip-shaped guide groove (151) is provided on the end face of the tubular body (1) near the sphere (2). 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 spring (16). The other end of the movable pin (152) can extend out of the end face of the tubular body (1) under the action of the spring (16). A rotating handle (4) is provided on the outside of the tubular body (1). The other end of the rotating handle (4), which is free at one end, has a protrusion (41) extending towards the tubular body (1). One end of a connecting block (8) is connected to the protrusion (41). The other end of the connecting block (8) passes through the tubular body (1) and is embedded in the sphere (2). A bolt (9) passes through the protrusion (41) on the rotating handle (4) in sequence. The protrusion (41) and connecting block (8) are connected to the ball (2). A drive ring (10) is fitted on the outside of the protrusion (41). A push pin (17) is movably provided between the drive ring (10) and the movable pin (152) that can move along the axial direction of the tubular body (1). A circumferentially extending strip groove (11) is opened on the drive ring (10) which is fixedly connected to the protrusion (41) and / or connecting block (8) of the rotating handle (4). A radially outward extending convex strip (12) is provided on the side surface of the push pin (17) opposite to one end of the movable pin (152). The convex strip (12) is slidably embedded in the strip groove (11) that extends at least a quarter circumference. The distance between the two side walls of the strip groove (11) and the rotation center of the drive ring (10) gradually changes in its extension direction. An annular clearance 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). When the movable pin (152) is pushed into the strip guide groove (151) and the ball (2) rotates to the 90° position with the rotating handle (4), the end of the push pin (17) away from the drive ring (10) is embedded in the annular clearance groove (19). When the ball (2) rotates to the 0° position with the rotating handle (4), the end of the push pin (17) away from the drive ring (10) is in abutting contact with the side wall of the movable pin (152) and the end of the movable pin (152) opposite to the spring (16) extends out of the end face of the tubular body (1).

2. The self-locking valve connector according to claim 1, characterized in that: The pipe joint (23) has a thread on the side wall opposite to one end of the tubular body (1) for connecting to an external pipe.

3. The self-locking valve connector according to claim 1, characterized in that: The flexible rib (22) is a metal wire.

4. The self-locking valve connector according to claim 1, characterized in that: The outer wall of the pipe joint (23) and the inner wall of the tubular body (1) are sealed together by at least two joint sealing rings (24) distributed axially.

5. The self-locking valve connector according to claim 1, characterized in that: The sphere (2) is connected to the inner wall of the tubular body (1) on the side opposite to the connecting block (8) by a rotating shaft (7).

6. The self-locking valve connector according to claim 1, characterized in that: The end face of the push pin (17) away from the drive ring (10) is a convex arc surface.

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