Replacement connector with bidirectional interlocking function

Abstract

The invention provides a replacement connector with a bidirectional interlocking function, which comprises a connector main body, and a plurality of convex blocks and a plurality of grooves are arranged at the butt joint end of the connector main body; and when the two replacement joints are butted together. After the two replacement connectors are in butt joint and are rotationally locked, the protruding blocks of the opposite replacement connectors rotate to abut against the slopes, the slopes rotate and move upwards, meanwhile, the protruding pins rotate and move upwards to the inclined rails, the lock hooks rotate and move downwards, and at the moment, the lock hooks do not interfere with the circumferential rotation tracks of the protruding blocks of the opposite connectors; when the handle is used for driving the valve element to rotate and be opened, the driving convex pin moves upwards to be screwed into the straight rail through the inclined rail, the lock hook hooks the opposite convex block to limit circumferential rotation of the opposite replacement connector, the movable lock catch and the convex block of the opposite replacement connector form circumferential occlusion, and the movable lock catch and the convex block of the opposite replacement connector are locked. The degree of freedom of circumferential rotation of the replacement connectors is effectively limited, and the two replacement connectors are prevented from loosening.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, in particular to a replacement joint with bidirectional interlocking. Background Art

[0002] Quick-connect connectors achieve rapid connection of pipelines through rotational locking, but the existing structure only relies on locking friction resistance and does not have a circumferential limit mechanism.

[0003] When the pipeline is subjected to vibration, pressure fluctuation or unexpected torque, the joint is prone to relative rotation, causing the lock to gradually loosen, resulting in low reliability and stability. Summary of the Invention

[0004] Based on this, an object of the present invention is to provide a replacement joint with bidirectional interlocking.

[0005] The invention provides the following technical solution: a replacement joint with bidirectional interlocking, comprising:

[0006] The connector body has a plurality of protrusions and a plurality of grooves on the butt end of the connector body; when two replacement connectors are butt-jointed, the protrusions of the two replacement connectors are screwed into each other's grooves, thereby achieving butt-jointing and locking of the two replacement connectors;

[0007] A rotary valve is provided on the connector body, and a handle of the rotary valve is provided on the outside of the connector body. The rotary valve is closed or opened by rotating the handle;

[0008] A movable lock buckle is rotatably arranged in a groove near the rotary valve to form a lever structure; the rotary valve cooperates with the movable lock buckle, and when the rotary valve is in an open state, the movable lock buckle engages with the corresponding protrusion in the groove to limit the circumferential rotational freedom of the protrusion; when the rotary valve is in a closed state, the movable lock buckle releases the engagement with the protrusion.

[0009] Furthermore, a lock hook is formed at one end of the movable lock, and a convex pin is provided on the other end, and the middle part of the movable lock is rotatably connected to the joint body; a slide rail is provided on the handle of the rotary valve, and the slide rail includes an inclined rail and a straight rail; in an initial state, the convex pin is located at the inclined rail, and when the handle is rotated to open the rotary valve, the convex pin is squeezed by the inclined rail, so that the lock hook of the movable lock engages with the protrusion.

[0010] Furthermore, the movable lock also includes a slope, which is squeezed and matched with the protrusion; the slide rail also includes the stop rail, which is connected to the inclined rail, and the inclined rail is vertical. In the initial state, the protruding pin is located at the stop rail; when the protrusion is screwed into the groove, the protrusion squeezes the inclined rail, causing the protruding pin to move to the inclined rail; the replacement joint also includes a torsion spring arranged between the movable lock and the joint body.

[0011] Furthermore, the connector body includes a valve body, and a threaded interface is configured at the tail of the valve body that is rotatably connected to connect it to the pipeline; the rotary valve and the movable lock are both arranged on the valve body, and the protrusion and the groove are arranged on the side of the valve body away from the tail.

[0012] Furthermore, a steel ball is provided between the tail and the valve body, and the valve body and the tail are rotatably connected via the steel ball.

[0013] Furthermore, a fifth sealing ring and a second guide belt are provided between the tail and the valve body.

[0014] Furthermore, the rotary valve includes a valve core rotatably arranged inside the joint body, and the handle is fixedly connected to the valve core. The state of the valve core is adjusted by rotating the handle to close or open the pipeline.

[0015] Furthermore, the handle and the valve core are fixedly connected via a valve stem, a first sealing ring is provided between the outer wall of the valve stem and the valve body, a first guide belt is also provided between the outer wall of the valve stem and the valve body, and the rotary valve also includes a fixing pin provided on the valve body, the valve core is rotatably connected to the fixing pin, and a fourth sealing ring is provided between the fixing pin and the valve body.

[0016] Furthermore, a second sealing ring is provided at the butt-jointed end of the joint body. When the two replacement joints are butt-jointed, the second sealing rings of the two replacement joints are pressed and fitted against each other.

[0017] Furthermore, a third sealing ring is provided on the valve body, and the third sealing ring is in contact with the surface of the valve core.

[0018] The beneficial effect of the invention is that when the two replacement joints are docked and rotated to lock each other, the convex block of the opposite replacement joint rotates to the top of the slope, the slope rotates upward, and the convex pin also rotates upward to the inclined rail, and the lock hook rotates downward. At this time, the lock hook does not interfere with the circumferential rotation trajectory of the convex block of the opposite joint, and the two replacement joints can also be loosened by rotating around each other. When the valve core is driven to rotate and open by the handle, the driving convex pin is moved upward through the inclined rail and screwed into the straight rail, and the lock hook hooks the opposite convex block to limit the circumferential rotation of the opposite replacement joint, and the movable lock buckle The cam of the opposite replacement joint forms a circumferential engagement, effectively limiting the circumferential rotational freedom of the replacement joint and preventing the two replacement joints from loosening. In addition, when the two replacement joints are not docked, the handle cannot be driven because the cam is blocked by the retaining rail, and the valve core is in a closed state. When the two replacement joints are docked with each other and rotated and locked, the cam of the opposite joint rotates and squeezes the slope, causing the cam to move from the retaining rail to the inclined rail. At this time, the valve core can be opened by rotating the handle. Therefore, the valve core can only be opened after the two replacement joints are docked with each other, thereby realizing the anti-misoperation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 is a schematic diagram of a cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the lever limiting mechanism of the present invention;

[0022] Figure 4 is a schematic diagram of the handle structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the local three-dimensional structure of two joints before being screwed together and docked;

[0024] Figure 6 It is a schematic diagram of a partial cross-sectional structure of two joints of the present invention before being screwed together;

[0025] Figure 7 It is a schematic diagram of a partial three-dimensional structure of two joints screwed together when the handle of the present invention is in a closed state;

[0026] Figure 8 It is a schematic diagram of a partial cross-sectional structure of two joints screwed together and docked when the handle of the present invention is in a closed state;

[0027] Figure 9 This is a schematic diagram of a partial three-dimensional structure of two joints screwed together when the handle of the present invention is in an open state;

[0028] Figure 10It is a schematic diagram of a partial cross-sectional structure of two joints screwed together and docked when the handle of the present invention is in the open state.

[0029] Figure 11 Schematic diagram of the explosion structure of the present invention.

[0030] Figure 12 Schematic diagram of the connection between the groove and the movable lock of the present invention.

[0031] The marks in the accompanying drawings are: 1-tail, 2-valve body, 3-valve core, 4-valve stem, 5-handle, 6-movable lock buckle, 7-screw, 8-first guide strip, 9-first sealing ring, 10-first screw, 11-bump, 12-second sealing ring, 13-third sealing ring, 14-fixing pin, 15-protective cover, 16-fourth sealing ring, 17-second guide strip, 18-fifth sealing ring, 19-steel ball, 20-groove, 21-lock hook, 22-second screw, 23-convex pin, 24-slope, 25-torsion spring, 26-rail, 27-inclined rail, 28-straight rail. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] A replacement joint with a two-way interlock, such as Figures 1-12 As shown, it includes: a joint body, a rotary valve, and a movable lock 6;

[0036] The connector body includes a tail portion 1 and a valve body 2;

[0037] like Figure 2 and 11 As shown, the left and right ends of the tail 1 are open, and the interior is a hollow structure. The end of the tail 1 away from the valve body 2 is equipped with a standard pipe thread interface, which can adapt to pipes of different specifications. The other end of the tail 1 is inserted into the valve body 2 and is rotatably connected to the valve body 2 through the steel ball 19 and the second guide belt 17. Specifically, Figure 2 As shown, three annular receiving grooves are provided on the outer wall of the tail portion 1 from left to right. The first receiving groove is used to accommodate a steel ball 19, the second receiving groove is used to accommodate a fifth sealing ring 18, and the fifth sealing ring 18 is used to achieve sealing between the tail portion 1 and the valve body 2. The third receiving groove is used to accommodate a second guide belt 17, and the second guide belt 17 is used to reduce the rotational friction resistance between the tail portion 1 and the valve body 2. The steel ball 19, the fifth sealing ring 18 and the second guide belt 17 are all located between the tail portion 1 and the valve body 2.

[0038] like Figure 2 and 11 As shown, the left and right ends of the valve body 2 are also open, and the interior is a hollow structure. The left end is connected to the tail 1, and the right end is used to connect with another replacement joint. The left end of the valve body 2 is also provided with a first valve body receiving groove corresponding to the first receiving groove of the tail 1. The first valve body receiving groove cooperates with the first receiving groove of the tail 1 to accommodate the steel ball 19, thereby realizing a rotational connection between the two. A hole is provided on the valve body 2, and the hole is connected to the first valve body receiving groove. The steel ball 19 can be embedded in the first valve body receiving groove through the hole, and the hole is sealed with a screw 7 to prevent the steel ball 19 from coming out of the hole. Slide out; the middle of the valve body 2 is provided with a through-hole on both the upper and lower sides, both of which are connected to the inner cavity of the valve body 2, and the through-holes are used to install the rotary valve; the right inner cavity of the valve body 2 is provided with an annular second valve body accommodating groove, the second valve body accommodating groove is used to embed the third sealing ring 13, the third sealing ring 13 fits with the surface of the valve core 3 of the rotary valve, thereby realizing the rotation seal between the valve core 3 and the valve body 2; the right end docking end surface of the valve body 2 is provided with a second sealing ring 12, when the two replacement joints are docked, the two second sealing rings 12 fit each other to realize the radial seal of the replacement joint; such as Figure 12 As shown, two protrusions 11 and two grooves 20 are provided on the right end docking end face of the valve body 2. The setting of the protrusions 11 and the grooves 20 can be increased or decreased according to actual conditions, and there is no limit on the number here. When the two replacement joints are docked together, the protrusions 11 of the two replacement joints are screwed into each other's grooves 20, thereby realizing axial locking of the two replacement joints; the outer wall of the docking end of the valve body 2 is wrapped with a protective cover 15, which is used to protect this part of the valve body 2.

[0039] like Figure 2-Figure 4 As shown in Figures 11 and 12 , the rotary valve includes a fixing pin 14, a valve core 3, a valve stem 4, a handle 5, a first guide strip 8, a first sealing ring 9, a first screw 10 and a fourth sealing ring 16;

[0040] The fixing pin 14 is fixedly connected to the through-hole on the lower side of the valve body 2, and one end of the fixing pin 14 extends into the interior of the valve body 2; a fourth sealing ring 16 is provided at the end surface between the fixing pin 14 and the valve body 2, thereby realizing the sealing between the fixing pin 14 and the valve body 2; the valve core 3 is rotatably connected to the inserted end of the fixing pin 14, and a through-hole is formed in the middle of the valve core 3. When the through-hole and the inner cavity of the valve body 2 are in a straight line, the valve body 2 is in a passage, allowing the flowing material to flow from one end of the valve core 3 to the other end. A concave hole adapted to the lower part of the valve stem 4 is provided on the upper part of the valve core 3; the valve stem 4 is rotatably provided at the through-hole on the upper side of the valve body 2, and the lower part of the valve stem 4 passes through the through-hole on the upper side of the valve body 2 and is inserted into the concave hole. The lower part of the valve stem 4 is arranged in a square shape, and the valve stem 4 rotates Thereby driving the valve core 3 to rotate, an annular first sealing ring 9 and a first guide belt 8 are provided between the outer wall of the valve stem 4 and the through-hole on the upper side of the valve body 2. The first sealing ring 9 realizes the seal between the valve stem 4 and the valve body 2. The first guide belt 8 is used to reduce the rotational friction between the valve stem 4 and the valve body 2. A threaded hole is formed on the middle side of the upper part of the valve stem 4, and the upper part of the valve stem 4 is square in shape; a concave hole adapted to the upper part of the valve stem 4 is provided at the lower part of the handle 5, and the upper part of the valve stem 4 is inserted into the concave hole at the lower part of the handle 5. The handle 5 is also provided with a mounting hole for accommodating a first screw 10, and the first screw 10 is screwed into the threaded hole of the valve stem 4 from the mounting hole, thereby fixing the handle 5 and the valve stem 4 together. The rotation of the handle 5 drives the valve stem 4 to rotate; Figure 4 As shown, a slide rail is provided on the handle 5 , the axis of the slide rail is consistent with the rotation axis of the handle 5 , and the slide rail includes an inclined rail 27 and a straight rail 28 .

[0041] like Figure 2-Figure 4 As shown in FIG11 , the movable lock buckle 6 is rotatably arranged in the groove 20 near the handle 5, and the movable lock buckle 6 forms a lever structure; the rotary valve cooperates with the movable lock buckle 6, and when the rotary valve is in the open state, the movable lock buckle 6 engages with the protrusion 11 in the corresponding groove 20, limiting the circumferential rotation freedom of the protrusion 11, and when the rotary valve is in the closed state, the movable lock buckle 6 releases the engagement with the protrusion 11; the movable lock buckle 6 is fixedly connected to the corresponding groove 20 by a second screw 22. In this embodiment, the movable lock buckle 6 is fixedly connected to the groove 20 near the handle 5 by the second screw 22, and the movable lock buckle 6 is rotatably connected to the second screw 22. One end of the movable lock buckle 6 forms a lock hook 21, and the other end is fixedly connected to a convex pin 23. The convex pin 23 is integrally formed with the movable lock buckle 6. In the initial state, one end of the convex pin 23 is located in the inclined rail 27 of the handle 5; it can be understood that Figures 5-10As shown, after the two replacement joints are docked with each other, the operator operates the rotating handle 5 to open the rotary valve. The slide rail on the handle 5 rotates with the handle 5. At this time, the inclined rail 27 squeezes the protruding pin 23, and the protruding pin 23 rotates and lifts upward. The protruding pin 23 moves into the straight rail 28, and the lock hook 21 on the other end rotates and moves downward. Figure 9 and Figure 10 As shown, the lock hook 21 hooks the protrusion 11 of the opposite replacement joint, so that the movable lock buckle 6 and the protrusion 11 form a circumferential bite, thereby preventing the two replacement joints from being accidentally loosened, and effectively restricting the circumferential rotational freedom of the two replacement joints. When the handle 5 is rotated to close the rotary valve, the protruding pin 23 will move to the inclined rail 27. The handle 5 continues to rotate, and the inclined rail 27 will squeeze the protruding pin 23, causing the protruding pin 23 to move to the bottom side of the inclined rail 27. At this time, the lock hook 21 will be lifted upward and no longer hook the protrusion 11, thereby releasing the rotation limit of the two replacement joints.

[0042] like Figures 4-10 As shown, the present invention also provides a second embodiment, which, based on the first embodiment, further includes a slope 24 formed on the movable lock 6; the slide rail also includes a stop rail 26; a torsion spring 25 provided between the movable lock 6 and the joint body

[0043] Specifically, the ramp 24 is squeezed and fitted with the protrusion 11 of the opposite replacement joint; the stop rail 26 is connected to the inclined rail 27, and the inclined rail 27 is vertical. In the initial state, the protruding pin 23 is located at the stop rail 26; when the protrusion 11 is screwed into the groove 20, the protrusion 11 squeezes the inclined rail 27, causing the protruding pin 23 to move to the inclined rail 27.

[0044] When the cam 11 of the opposite replacement joint rotates out of the groove 20 and no longer presses the ramp 24, the cam 11 is now subjected to the force of the torsion spring 25, and the cam 23 moves downward and is screwed into the stop rail 26 to reset.

[0045] In summary, when the two replacement joints are docked and rotated and locked with each other, the protrusion 11 of the opposite replacement joint rotates to the top of the slope 24, and the slope 24 rotates upward. At the same time, the protruding pin 23 also rotates upward to the inclined rail 27, and the locking hook 21 rotates downward. At this time, the locking hook 21 does not interfere with the circumferential rotation trajectory of the protrusion 11 of the opposite joint. The two replacement joints can also be loosened by rotating around each other. When the valve core 3 is driven to rotate and open by the handle 5, the driving protruding pin 23 is moved upward through the inclined rail 27 and screwed into the straight rail 28, and the locking hook 21 hooks the opposite protrusion 11 to limit the circumferential rotation of the opposite replacement joint, and the movable lock The buckle 6 forms a circumferential engagement with the protrusion 11 of the opposing replacement joint, effectively limiting the circumferential rotational freedom of the replacement joint and preventing the two replacement joints from loosening; in addition, when the two replacement joints are not docked, the handle 5 cannot be driven because the protruding pin 23 is blocked by the blocking rail 26, and the valve core 3 is in a closed state; when the two replacement joints are docked with each other and rotated and locked, the protrusion 11 of the opposing joint rotates and squeezes the slope 24, so that the protruding pin 23 moves from the blocking rail 26 to the inclined rail 27. At this time, the valve core 3 can be opened by rotating the handle 5. Therefore, the valve core 3 can only be opened after the two replacement joints are docked with each other, thereby realizing the anti-misoperation function.

[0046] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A replacement joint with two-way interlocking, characterized in that, include: The connector body has a plurality of protrusions and a plurality of grooves on the butt end of the connector body; when two replacement connectors are butt-jointed, the protrusions of the two replacement connectors are screwed into each other's grooves, thereby achieving butt-jointing and locking of the two replacement connectors; A rotary valve is provided on the connector body, and a handle of the rotary valve is provided on the outside of the connector body. The rotary valve is closed or opened by rotating the handle; A movable lock buckle is rotatably arranged in a groove near the rotary valve to form a lever structure; the rotary valve cooperates with the movable lock buckle, and when the rotary valve is in an open state, the movable lock buckle engages with the corresponding protrusion in the groove to limit the circumferential rotational freedom of the protrusion; when the rotary valve is in a closed state, the movable lock buckle releases the engagement with the protrusion.

2. The replacement joint according to claim 1, characterized in that: One end of the movable lock is formed into a lock hook, and the other end is provided with a convex pin. The middle part of the movable lock is rotatably connected to the joint body; the handle of the rotary valve is provided with a slide rail, and the slide rail includes an inclined rail and a straight rail; in the initial state, the convex pin is located at the inclined rail. When the handle is rotated to open the rotary valve, the convex pin is squeezed by the inclined rail, so that the lock hook of the movable lock is engaged with the protrusion.

3. The replacement joint according to claim 2, characterized in that: The movable lock also includes a slope, which is squeezed and matched with the protrusion; the slide rail also includes a stop rail, which is connected to the inclined rail, and the inclined rail is vertical. In the initial state, the convex pin is located at the stop rail; when the protrusion is screwed into the groove, the protrusion squeezes the inclined rail, causing the convex pin to move to the inclined rail; the replacement joint also includes a torsion spring arranged between the movable lock and the joint body.

4. The replacement joint according to claim 1, characterized in that The joint body includes a valve body, and a threaded interface is configured at the tail of the valve body for connecting it to a pipeline; the rotary valve and the movable lock are both arranged on the valve body, and the protrusion and the groove are arranged on the side of the valve body away from the tail.

5. The replacement joint according to claim 4, characterized in that: A steel ball is provided between the tail and the valve body, and the valve body and the tail are rotatably connected via the steel ball.

6. The replacement joint according to claim 5, characterized in that: A fifth sealing ring and a second guide belt are further provided between the tail and the valve body.

7. The replacement joint according to claim 1, characterized in that: The rotary valve includes a valve core rotatably arranged inside the joint body, and the handle is fixedly connected to the valve core. The state of the valve core is adjusted by rotating the handle to close or open the pipeline.

8. The replacement joint according to claim 7, characterized in that: The handle and the valve core are fixedly connected via a valve stem, a first sealing ring is provided between the outer wall of the valve stem and the valve body, a first guide belt is also provided between the outer wall of the valve stem and the valve body, the rotary valve also includes a fixing pin provided on the valve body, the valve core is rotatably connected to the fixing pin, and a fourth sealing ring is provided between the fixing pin and the valve body.

9. The replacement joint according to claim 1, characterized in that: A second sealing ring is provided at the butt-jointed end of the joint body. When the two replacement joints are butt-jointed, the second sealing rings of the two replacement joints are pressed and fitted against each other.

10. The replacement joint according to claim 1, characterized in that A third sealing ring is provided on the valve body, and the third sealing ring is in contact with the surface of the valve core.

Images