Ball valve type fluid connector with false break prevention function

Abstract

The application relates to a ball valve type fluid connector with a mistaken breakage prevention function, which comprises a shell with an axial flow channel, a ball valve capable of rotating between a closed position for blocking the flow channel and an open position for opening the flow channel, an unlocking guide rod arranged in a first hole of the shell, wherein the ball valve is kept in the closed position when the unlocking guide rod is in a locking position and is allowed to rotate from the closed position to the open position when the unlocking guide rod is in an unlocking position, a locking guide rod arranged in a second hole, wherein the locking guide rod is freely movable between a first position and a second position when the ball valve is closed and is kept in the first position when the ball valve is opened, the locking guide rod is kept in the first position and the unlocking guide rod is kept in the unlocking position when the connector is connected with a matched connector, and the locking guide rod is kept in the first position and the unlocking guide rod is kept in the locking position when the connector is separated from the matched connector, so that pipeline accidents caused by mistaken operation can be avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of connectors, and particularly relates to a ball valve type fluid connector with a mistaken disconnection prevention function. BACKGROUND

[0002] The ball valve type fluid connector is a kind of valve core with a ball type structure. Since the flow passage of the ball valve type fluid connector is almost equivalent to a pipe with the same diameter at one end when the flow passage is opened, the flow resistance is extremely low, and the ball valve type fluid connector can realize full flow transmission, so the ball valve type fluid connector is widely applied to main pipelines.

[0003] The existing ball valve type connectors on the market, such as ordinary water valves, mostly do not have the functions of quick disconnection and connection, and it is relatively troublesome to disconnect and connect, and the maintenance difficulty and period are large. Secondly, most ball valve type connectors do not have the mistaken disconnection prevention function, or the mistaken disconnection prevention function has a complex structure, high matching precision and large production difficulty. Mistaken operation under the condition that the system does not stop will cause a large range of medium leakage and cause a major accident. SUMMARY

[0004] The application aims to provide a ball valve type fluid connector with a mistaken disconnection prevention function, so that the ball valve type fluid connector can not only be quickly connected and easily plugged and unplugged, but also has the mistaken disconnection prevention function, and has great market potential.

[0005] The application is achieved by adopting the following technical scheme. According to the ball valve type fluid connector with the mistaken disconnection prevention function, the connector comprises a shell, a flow passage extending in the axial direction is arranged in the shell, and the front end of the shell can be connected with a matching connector; a ball valve can rotate between a closed position for blocking the flow passage and an open position for opening the flow passage; a first hole and a second hole are arranged in the shell and open on the front end surface; an unlocking guide rod is arranged in the first hole and can move between a locked position and an unlocked position; when the unlocking guide rod is in the locked position, the front end of the unlocking guide rod protrudes out of the first hole, so that the ball valve is kept in the closed position; when the unlocking guide rod is in the unlocked position, the front end of the unlocking guide rod is retracted into the first hole, so that the ball valve can rotate from the closed position to the open position; a locking guide rod is arranged in the second hole and protrudes out of the second hole when in a first position and is retracted into the second hole when in a second position; the locking guide rod can freely move between the first position and the second position when the ball valve is closed, and the locking guide rod is kept in the first position when the ball valve is opened.

[0006] When the connector is connected with the matching connector, the matching connector keeps the locking guide rod in the first position and keeps the unlocking guide rod in the unlocked position; when the connector is separated from the matching connector, the locking guide rod is kept in the first position and the unlocking guide rod is kept in the locked position.

[0007] The application can be further achieved by adopting the following technical measures.

[0008] The ball valve type fluid connector with the anti-misoperation function, the engagement of the connector and the adapter connector is realized by the relative rotation of the housings.

[0009] The ball valve type fluid connector with the anti-misoperation function, the locking guide rod and the unlocking guide rod are distributed on both sides of the valve stem of the ball valve.

[0010] The ball valve type fluid connector with the anti-misoperation function, the elastic member is arranged between the unlocking guide rod and the first hole to provide the unlocking guide rod with the power to move from the unlocking position to the locking position; the elastic member is arranged between the locking guide rod and the second hole to provide the locking guide rod with the power to move from the second position to the first position.

[0011] The ball valve type fluid connector with the anti-misoperation function, the outer circumferential surface of the valve stem is provided with a locking groove matched with the locking of the ball; when the unlocking guide rod is in the locking position, the outer diameter of the unlocking guide rod presses the ball to embed in the locking groove; when the unlocking guide rod is in the unlocking position, the groove structure of the outer circumference of the unlocking guide rod provides the ball with the space to leave the locking groove.

[0012] The ball valve type fluid connector with the anti-misoperation function, the outer circumferential surface of the valve stem is further provided with a clearance groove, the maximum outer circle of the ball valve axially limits the locking guide rod, and when the ball valve is closed, the clearance groove allows the locking guide rod to move axially backward and prevents it from moving axially forward.

[0013] The ball valve type fluid connector with the anti-misoperation function, the locking guide rod is a variable-diameter rod with thin middle and thick ends, and the maximum outer circle of the valve stem is matched with the small gap of the thin diameter of the locking guide rod and axially blocked with the thick diameter of the locking guide rod; when the ball valve is closed, the clearance groove provides the thick diameter part of the front end of the locking guide rod with the space to avoid the valve stem.

[0014] The ball valve type fluid connector with the anti-misoperation function, the adapter connector keeps the locking guide rod in the first position through the clearance groove on the front end face of the housing, and the surface matched with the locking guide rod has an inclined surface to gradually compress the locking guide rod during the separation process.

[0015] The ball valve type fluid connector with the anti-misoperation function, the connector and the adapter connector are combined and locked by the cooperation of the claws and the slots distributed circumferentially on the front end face of the housing; the slot includes a groove for accommodating the claw and a stop edge axially blocked with the claw, and the stop edge on one side of the slot is missing to form an entrance for the insertion of the claw.

[0016] The aforementioned ball valve type fluid connector with the anti-misoperation breaking function, the connector and the adapter connector housing front end are symmetrically provided with two clamping claws, two clamping grooves and two accommodating grooves, and the entrance directions of the two clamping grooves are opposite, so that the connector has two rotatable directions when combined with the adapter connector.

[0017] The aforementioned ball valve type fluid connector with the anti-misoperation breaking function, characterized in that: the valve rod end of the ball valve is connected with a handle, and an interlocking system for preventing the handle from being misrotated is arranged between the handle and the housing.

[0018] The aforementioned ball valve type fluid connector with the anti-misoperation breaking function, the housing is axially limited and rotationally connected between the tail accessories by the ball.

[0019] Compared with the prior art, the present application has obvious advantages and beneficial effects. By the above technical scheme, the present application can achieve considerable technical progress and practicality, and has wide industrial utilization value, at least having the following advantages:

[0020] ①Self-sealing function: the connector of the present application can seal the internal liquid in the disconnected state.

[0021] ②Full flow "zero" flow resistance function: the connector of the present application is in a straight pipe state after the ball valve is opened in the connected state, greatly reducing the flow resistance, and the sealing rubber ring is not located in the flow passage, so that the product can not be limited by the flow size, thereby realizing the performance of low flow resistance and high flow.

[0022] ③The product is provided with an anti-misoperation breaking function: the connector ball valve cannot be directly opened by rotating the handle in the disconnected state of the connector; in the state that the connector is connected to the position, the ball valve of the connector cannot be directly opened; in the connected state, the connector cannot be disconnected before the ball valve of any end connector is closed; the accident of accidental opening of the pipeline and leakage due to misoperation is avoided, and the safety of the product is greatly improved.

[0023] ④Pressure insertion and removal: the connector of the present application can be easily inserted and removed under the condition that the system does not stop, solving the problem that the existing product cannot be operated under high pressure.

[0024] ⑤Tail 360° free rotation function: the tail is designed to be 360° freely rotatable, effectively solving the problem of tail pipeline twisting during use of the connector.

[0025] ⑥The structure of the locking and unlocking mechanism is simple, the matching precision requirement is not high, the manufacturing is easy, the assembly is simple, and the production cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic view of the ball valve type fluid connector with the anti-misoperation breaking function of the present application;

[0027] Figure 2 Top view of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0028] Figure 3 Sectional view of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0029] Figure 4 Partial sectional view of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0030] Figure 5 Another partial sectional view of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0031] Figure 6 Handle partial sectional view of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0032] Figure 7 Another sectional view of the handle of the ball valve type fluid connector with the anti-misoperation function of the present invention;

[0033] Figure 8 Partial sectional view of the ball valve type fluid connector and the mating connector during the mating process of the present invention;

[0034] Figure 9 Another partial sectional view of the connector and the mating connector during the mating process of the present invention;

[0035] Figure 10 Partial sectional view of the valve in the unopened state when the connector and the mating connector are mated in place of the present invention;

[0036] Figure 11 Another partial sectional view of the valve in the unopened state when the connector and the mating connector are mated in place of the present invention;

[0037] Figure 12 Partial sectional view of the valve in the opened state when the connector and the mating connector are mated in place of the present invention;

[0038] Figure 13 Another partial sectional view of the valve in the opened state when the connector and the mating connector are mated in place of the present invention.

[0039]

MAIN ELEMENT SYMBOL EXPLANATION

[0040] 1: housing

[0041] 2: flow passage

[0042] 3: valve body

[0043] 4: valve stem

[0044] 5: Ball bearing

[0045] 6: First hole

[0046] 7: Second hole

[0047] 8: Unlock the guide rod

[0048] 9: Locking guide rod

[0049] 10: Claw

[0050] 11: Card slot

[0051] 12: Leaving slot

[0052] 13: Edge

[0053] 14: Groove

[0054] 15: First elastic element

[0055] 16: Second elastic element

[0056] 17: Locking groove

[0057] 18: Clearance slot

[0058] 19: Handle

[0059] 20: First-stage guide rod

[0060] 21: First-stage guide rod spring

[0061] 22: Secondary guide rod

[0062] 23: Secondary guide rod spring

[0063] 24: Transmission ball bearings

[0064] 25: Locking ball bearings

[0065] 26: Unlock slot

[0066] 27: Lock slot

[0067] 28: Steel balls

[0068] 29: Tail Accessories Detailed Implementation

[0069] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the ball valve fluid connector with anti-misoperation function proposed according to the present invention.

[0070] Please see Figures 1-13The ball valve type fluid connector with the mistaken breakage prevention function comprises a shell 1 with an axial flow channel 2 extending from one end of the shell to the other end, so that fluid can flow through the flow channel 2 from one end of the connector to the other end. A ball-shaped valve body 3 is rotatably arranged in the flow channel 2 of the shell 2, the valve body 3 comprises a spherical surface and a diameter hole extending from the spherical surface, and the valve body 3 has an open position and a closed position in the flow channel 2. When the valve body 3 is in the open position, the diameter hole of the valve body 3 is coaxially aligned with the flow channel 2, allowing fluid to flow through the diameter hole from one end of the flow channel 2 to the other end. When the valve body 3 is in the closed position, the spherical surface of the valve body 3 is axially opposite to the flow channel 2, which blocks the flow of fluid from one end of the flow channel to the other end.

[0071] One side surface of the valve body 3 is engaged with a valve rod 4, the valve rod 4 is in rotational sealing cooperation with the shell 2 and extends outwardly from the shell 2 and is connected with a handle 19 after extending out of the shell 2, the handle 19 drives the valve rod 4 to rotate, thereby driving the valve body 3 to rotate between the closed position and the open position. The valve rod 4 and the valve body 3 move synchronously, when the valve body 3 is in the closed position, it is also called the closed position of the valve rod 4; when the valve body 3 is in the open position, it is also called the open position of the valve rod 4.

[0072] The front end of the shell 1 can be axially connected with the shell of the adapter connector, the front end of the shell 1 is provided with a first blind hole 6 and a second blind hole 7 extending in the axial direction, the first blind hole 6 and the second blind hole 7 are distributed on both sides of the valve rod 4, wherein the first blind hole 6 is provided with an unlocking guide rod, the second blind hole 7 is provided with a locking guide rod 9, and the unlocking guide rod 8 has a locking position and an unlocking position, and can be freely switched between the locking position and the unlocking position, when the unlocking guide rod 8 is in the locking position, the front end of the unlocking guide rod 8 extends out of the first blind hole 6, and the valve rod 4 can be kept in the closed position and refused to rotate from the closed position to the open position; when the unlocking guide rod 8 is in the unlocking position, the front end of the unlocking guide rod 8 is retracted into the first blind hole 6, and the valve rod 4 is allowed to rotate from the closed position to the open position.

[0073] The locking guide rod 9 has a first position with the front end extending out of the second blind hole 7 and a second position with the front end retracted into the second blind hole 7, and the locking guide rod 9 can be freely moved between the first position and the second position.

[0074] In the embodiment of the present application, the outer circumferential surface of the valve rod 4 is provided with a locking groove 17 for cooperating with the ball 5 and the unlocking guide rod 8, and an avoiding groove 18 for avoiding the locking guide rod 9 and allowing it to move from the first position to the second position. When the valve body 3 is in the closed state, the locking groove 17 is located at a position corresponding to the unlocking guide rod 8, and the avoiding groove 18 is located at a position corresponding to the locking guide rod 9.

[0075] When the unlocking guide rod 8 is in the locking position, the balls 5 are pressed by the outer periphery of the unlocking guide rod 8 and embedded in the locking grooves 17 on the outer periphery of the valve rod 4, so that the valve rod 4 is locked with the balls 5 and prevented from rotating from the closed position to the open position; at this time, the avoiding grooves 18 allow the locking guide rod 9 to move from the first position to the second position.

[0076] When the unlocking guide rod 8 is in the unlocking position, the balls 5 can move to the side of the unlocking guide rod 8 and disengage from the locking grooves 17, so that the valve rod 4 is unlocked with the balls 5 and allowed to rotate from the closed position to the open position; at this time, the avoiding grooves 18 are away from the locking guide rod 9, and the large diameter of the outer periphery of the valve rod 4 is limited with the locking guide rod 9, so that the locking guide rod 9 cannot move axially and is prevented from moving between the first position and the second position.

[0077] In this embodiment, the unlocking guide rod 8 and the first blind hole 6 are further provided with a first elastic member 15, which provides power for the unlocking guide rod 8 to move from the unlocking position to the locking position. The locking guide rod 9 and the second blind hole 7 are further provided with a second elastic member 16, which provides power for the locking guide rod 9 to move from the second position to the first position. Preferably, the first elastic member 15 and the second elastic member 16 are both springs.

[0078] In this embodiment, the unlocking guide rod 8 is provided with a groove structure 81 for providing radial movement space for the ball 5, when the groove structure 81 reaches the position corresponding to the ball 5, the valve stem 4 can be rotated, the ball 5 is extruded to move into the groove structure 81, the constraint on the valve stem is released, so that the ball valve can be opened. Specifically, the unlocking guide rod 8 is a variable diameter guide rod, the groove structure 81 is formed by the change of the outer diameter size, preferably, the unlocking guide rod includes first level outer diameter, second level outer diameter, third level outer diameter and fourth level outer diameter from front to back, wherein the diameter of the first level outer diameter and the fourth level outer diameter is consistent, the diameter of the second level outer diameter is smaller than the diameter of the third level outer diameter, and the diameter of the third level outer diameter is smaller than the diameter of the first level outer diameter. The groove structure 81 is composed of the transition part from the first level outer diameter to the second level outer diameter, the second level outer diameter and the transition part from the second level outer diameter to the third level outer diameter. The transition part of the fourth level outer diameter and the third level outer diameter forms a stepped surface for axially stopping and limiting the ball 5, preventing the unlocking guide rod 8 from being pulled out of the first blind hole 6. When the ball valve is in the closed position, the ball is located in the locking groove 17 on the valve stem, under the push of the first elastic member, the third level outer diameter of the unlocking guide rod 8 is in close contact with the ball 5, so that the ball cannot move radially along the valve stem 4, thereby restricting the valve stem from rotating, that is, restricting the valve core from opening, that is, realizing the function of a single connector state, the ball valve cannot be directly opened. During the process of plugging the two connectors, the unlocking guide rod is compressed by the end face of the other end, the spring is compressed backward, the third level outer diameter is given out, the second level outer diameter is located below the steel ball, at this time the steel ball has displacement space, when the handle is screwed, the steel ball is extruded, the constraint on the valve stem is released, the ball valve can be opened.

[0079] The locking guide rod 9 includes large diameter segments at both ends and a small diameter segment in the middle, and the small diameter segment can be matched with the maximum outer circle of the valve stem 4 with a small gap, and the stepped surface formed between the large diameter segment and the small diameter segment axially stops and limits the maximum outer circle of the valve stem 4, so that when the valve stem is in the open position, the locking guide rod 9 is axially limited by the outer circle of the valve stem 4, and the locking guide rod 9 cannot move from the first position to the second position. When the valve stem 4 is in the closed position, the relief groove 18 on the valve stem 4 returns to the position corresponding to the locking guide rod 9, at this time, the large diameter segment at the rear end of the locking guide rod 9 is still axially limited by the maximum outer circle of the valve stem 4, preventing it from moving axially forward, and the large diameter segment at the front end is given space by the relief groove 18, so that it can move axially backward, that is, the relief groove 18 allows the locking guide rod 9 to move from the first position to the second position. Preferably, the relief groove 18 is triangular. The stepped surface formed between the large diameter segment and the small diameter segment of the locking guide rod 9 is a vertical surface perpendicular to the axial direction of the locking guide rod 9.

[0080] When the connector and the adapter connector are inserted into place, the locking guide rod 9 can be kept in the first position, i.e. the adapter shell is provided with a clearance slot 12 allowing the locking guide rod 9 to be kept in the first position. The connector and the adapter connector are connected and locked by relative rotation of the shells. Since the locking guide rod 9 corresponds to the clearance slot 12 of the adapter shell when inserted into place, the locking guide rod 9 and the clearance slot 12 can only be disengaged when the locking guide rod 9 can be moved from the first position to the second position, i.e. the connector and the adapter connector can be separated. The locking guide rod 9 is moved from the first position to the second position only when the relief slot 18 on the valve stem 4 is rotated to the variable diameter portion of the locking guide rod 9, at which time the ball valve is in the closed state, i.e. the connector and the adapter connector can only be separated when the ball valve is closed. In this embodiment, the surface of the clearance slot 12 that cooperates with the locking guide rod 9 is a beveled surface. This beveled surface feature causes the axial compression of the clearance slot 12 on the locking guide rod 9 to gradually disappear during the rotation and locking process, and the locking guide rod 9 gradually returns to the first position under the elastic force of the second elastic member and is embedded in the clearance slot 12. When unlocking and separating, the locking guide rod 9 is gradually axially compressed against the second elastic member under the guidance of the beveled surface feature until it is completely compressed into the shell and reaches the second position, at which time the two connectors are completely unlocked.

[0081] Since the unlocking guide rod 8 is in the locked position, the ball valve must be in the closed state. When the ball valve is in the open state, the ball 5 is located in the groove structure of the unlocking guide rod, and the locking groove 17 on the valve body is away from the unlocking guide rod, so that the unlocking guide rod cannot be moved from the unlocking position to the locking position, i.e. the connector cannot be inserted with the adapter connector. That is, the connector can only be inserted with the adapter connector when the ball valve is closed.

[0082] The single connector is pressed by the external force of the unlocking guide rod 8, and thus is kept in the locked position, so that the valve stem of the ball valve is locked and the ball valve cannot be rotated from the closed position to the open position, i.e. the single connector is kept in the closed state and cannot be opened by the valve stem.

[0083] In the embodiment of the present application, the connector and the adapter connector are rotationally locked by the cooperation of the clamping claws 10 and the clamping grooves 11 distributed circumferentially on the front end faces of the shells. The clamping groove 11 includes a groove 14 and a blocking edge 13 formed on the outer wall of the groove 14 and extending radially inward from the shell to partially block the groove 14, and the clamping groove 11 includes a support portion extending vertically from the shell face and a clamping portion extending radially outward from the shell, which forms a groove cooperating with the blocking edge to achieve axial limiting on the side away from the flow channel 2 of the shell. That is, when the connector and the adapter connector are rotationally locked, the clamping portion of the clamping claw 10 enters the groove 14 and axially blocks the blocking edge 13.

[0084] The card slot 11 is also provided with an opening at one end for facilitating the entry of the end card claw 10, and the stop edge 13 is cancelled at the opening, so that the claw 10 can enter the slot.

[0085] In this embodiment, the claw 10 and the card slot 11 are both provided with two, and the opening directions of the two card slots are opposite, and the line connecting the two openings is perpendicular to the line connecting the centers of the two claws 10, so that the connector and the adapter connector can be connected and locked in two rotation directions when they are connected, and the rotation direction can be freely rotated. That is, the connector and the adapter connector of the present application can have two connection states.

[0086] In this embodiment, the let-out slot 12 is also provided with two, and the inclination trends of the inclined surfaces of the two let-out slots 12 are opposite, so that the connector can be locked with the adapter connector and released the locking guide rod in any direction.

[0087] The handle 19 is connected with the shell 1 through an interlocking system, and only when the interlocking system is unlocked, the handle 19 can rotate relative to the shell 1, thereby driving the valve rod 4 to rotate and realizing the opening and closing of the valve. When the interlocking system is not unlocked, the handle 19 is locked on the shell 1 and cannot be rotated.

[0088] The interlocking system comprises a primary guide rod 20, a primary guide rod spring 21, a transmission ball 24, a secondary guide rod 22, a secondary guide rod spring 23 and a locking ball 25. The secondary guide rod 22 is slidingly arranged in a blind hole of the handle 19, and the secondary guide rod spring 23 is used to provide power for the secondary guide rod 22 to move outward from the blind hole. The secondary guide rod 22 extrudes the locking ball 25 through the outer circumferential surface thereof, so that the locking ball 25 is kept in a groove on the shell 1, and the rotation between the handle 19 and the shell 1 is locked. The secondary guide rod has an unlocking groove 26 on the outer circumference thereof, which is used to provide a moving space for the locking ball 25 to move out of the groove on the shell 1, and the handle 19 and the shell 1 are unlocked.

[0089] The primary guide rod 20 is slidingly arranged in another blind hole of the handle 19, and the sliding directions of the primary guide rod 20 and the secondary guide rod 22 are perpendicular to each other. The end of the secondary guide rod 22 away from the secondary guide rod spring 23 is connected with the primary guide rod 20 through the transmission ball 24. The primary guide rod 20 has a locking groove 27 on the outer circumference thereof, and when the transmission ball 24 is located in the locking groove 27 of the primary guide rod 20, the secondary guide rod 22 moves axially outward under the pushing of the secondary guide rod spring, the unlocking groove 26 on the secondary guide rod 22 is separated from the locking ball, and the handle 19 and the shell 1 are kept locked.

[0090] The primary guide rod spring is located between the primary guide rod 20 and the shell, and is used to provide a force for the primary guide rod 20 to be pulled out of the shell 1, and the transmission ball 24 is matched with the shell to prevent the primary guide rod from being pulled out under the force of the primary guide rod spring. Specifically, the wall body on the side of the primary guide rod 20 towards the primary guide rod spring 21 is a vertical surface perpendicular to the axial direction of the primary guide rod, the bottom of the slot is a plane along the axial direction of the primary guide rod, and the wall body on the side away from the primary guide rod spring 21 is an inclined surface. When the primary guide rod 20 is pressed, the inclined surface can gradually press the transmission ball 24 to compress the secondary guide rod. When the primary guide rod is pressed to the position where the locking slot 27 is separated from the transmission ball 24, the unlocking slot 26 on the secondary guide rod 22 moves to the position corresponding to the locking ball 25. At this time, the handle is rotated, so that the locking ball 25 enters the secondary guide rod and is unlocked from the shell 1.

[0091] In this embodiment, the surface of the secondary guide rod 22 matched with the transmission ball is a spherical surface capable of partially accommodating the transmission ball 24, but is not limited thereto.

[0092] Through the design of the interlocking system, in the natural state of the handle 19, the transmission ball is located in the locking slot of the primary guide rod, the locking ball is located in the groove of the shell and is limited by the outer periphery of the secondary guide rod, preventing it from being pulled out of the groove of the shell, and the handle cannot be rotated. When unlocking is needed, the primary guide rod 20 is pressed, the transmission ball 24 is pushed under the action of the primary guide rod 20, the secondary guide rod 22 is pushed to move backward after compressing the secondary guide rod spring 23, and when the unlocking slot of the secondary guide rod 22 moves to the upper side of the locking ball 25, the locking ball is released from the limitation. At this time, when the handle is moved, the locking ball will be pulled out of the slot, realizing the unlocking of the handle.

[0093] In the embodiment of the application, the primary guide rod and the secondary guide rod are both variable-diameter guide rods, and the grooves on them are located at the small-diameter portions, but are not limited thereto.

[0094] In the embodiment of the application, the shell 1 and the tail accessory 29 are rotationally connected through the steel ball 28. The inner side of the tail of the shell 1 is provided with an arc-shaped groove extending in the circumferential direction, and the outer periphery of the tail accessory 29 is provided with an arc-shaped groove matched with the arc-shaped groove to form a circular groove for accommodating the steel ball 28, so that the steel ball 28 is partially located in the shell 1 and partially located in the tail accessory 29, realizing the axial limitation and the relative rotation of 360 degrees in the circumferential direction between the tail accessory 29 and the shell 1, avoiding the bending and twisting of the tail pipeline connected with the tail accessory during use.

[0095] The shell 1 and the tail accessory 29 are also sealed during rotation through the sealing element.

[0096] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been described as above with reference to the preferred embodiments, the present application is not intended to be limited to the preferred embodiments. Any person skilled in the art, without departing from the technical solution of the present application, can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, as long as it does not deviate from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A ball valve-type fluid connector with anti-misoperation function, characterized in that: include: The housing has an axially extending flow channel inside, and its front end can be connected to the adapter connector. A ball valve is capable of rotating between a closed position that blocks the flow passage and an open position that opens the flow passage; The housing is provided with a first blind hole and a second blind hole opening on the front end face; The first blind hole is provided with an unlocking guide rod that can move between a locked position and an unlocked position. When it is in the locked position, the front end of the unlocking guide rod extends out of the first blind hole to prevent the ball valve from rotating from the closed position to the open position. When it is in the unlocked position, the front end of the unlocking guide rod retracts into the first blind hole, allowing the ball valve to rotate from the closed position to the open position. The second blind hole is provided with a locking guide rod that extends out of the second blind hole when in the first position and retracts into the second blind hole when in the second position. The locking guide rod can move freely between the first position and the second position when the ball valve is closed, and remains in the first position when the ball valve is open. When the connector is engaged with the adapter connector, the adapter connector holds the locking guide in the first position and the unlocking guide in the unlocked position; when the connector is disengaged from the adapter connector, the locking guide remains in the first position and the unlocking guide remains in the locked position. The outer circumferential surface of the ball valve stem is provided with a locking groove that engages with the ball. When the unlocking guide rod is in the locked position, the outer diameter of the unlocking guide rod presses the ball so that it is embedded in the locking groove. When the unlocking guide rod is in the unlocked position, the groove structure on the outer circumference of the unlocking guide rod provides clearance space for the ball to disengage from the locking groove. The outer circumferential surface of the ball valve stem is also provided with a relief groove. The maximum outer diameter of the ball valve limits the axial movement of the locking guide rod. When the ball valve is closed, the relief groove allows the locking guide rod to move axially backward but prevents it from moving axially forward.

2. The ball valve fluid connector with anti-misoperation function according to claim 1, characterized in that: The engagement of the connector and the adapter connector is achieved by the relative rotation of the housing.

3. The ball valve fluid connector with anti-misoperation function according to claim 2, characterized in that: The locking guide rod and the unlocking guide rod are located on both sides of the ball valve stem.

4. The ball valve fluid connector with anti-misoperation function according to claim 3, characterized in that: An elastic element is provided between the unlocking guide rod and the first blind hole to provide power for the unlocking guide rod to move from the unlocked position to the locked position; an elastic element is provided between the locking guide rod and the second blind hole to provide power for the locking guide rod to move from the second position to the first position.

5. The ball valve fluid connector with anti-misoperation function according to claim 1, characterized in that: The locking guide rod is a variable diameter rod that is thinner in the middle and thicker at both ends. The maximum outer diameter of the valve stem is in close fit with the thin diameter of the locking guide rod and is axially blocked by the thick diameter of the locking guide rod. When the ball valve is closed, the clearance groove provides space for the thick diameter part at the front end of the locking guide rod to avoid the valve stem.

6. The ball valve fluid connector with anti-misoperation function according to any one of claims 2-5, characterized in that, The adapter connector holds the locking guide rod in a first position through a relief groove on the front end face of its housing. The surface of the relief groove that mates with the locking guide rod has an inclined surface that causes the locking guide rod to be gradually compressed during the separation process.

7. The ball valve fluid connector with anti-misoperation function according to claim 6, characterized in that, The connector and the adapter connector achieve rotational engagement and locking through the engagement of claws and slots distributed circumferentially on the front end face of the housing; the slot includes a groove for accommodating the claws and a retaining edge that engages with the axial stop of the claws, and the retaining edge is missing on one side of the slot to form an entrance for the claws to be inserted.

8. The ball valve fluid connector with anti-misoperation function according to claim 7, characterized in that, Both the connector and the adapter connector housing have two claws, two slots and two clearance slots symmetrically arranged at their front ends, and the two slots have opposite entry directions, so that the connector and the adapter connector have two rotatable directions when they are combined.

9. The ball valve fluid connector with anti-misoperation function according to any one of claims 2-5 and 7-8, characterized in that: The ball valve has a handle connected to the end of its stem, and an interlocking system is provided between the handle and the housing to prevent accidental rotation of the handle.

10. The ball valve fluid connector with anti-misoperation function according to any one of claims 2-5 and 7-8, characterized in that: The housing is axially limited and rotatably connected to the tail accessories via ball bearings.

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