Pipe joint female head with valve and pipe joint set

Abstract

The utility model discloses a pipe joint female head with a valve and a pipe joint set, and relates to the field of pipeline connecting pieces. The pipe joint female head with the valve comprises a female head pipe, a handle, a rotating shell, a fixed clamping jaw and a movable clamping jaw, wherein the fixed clamping jaw and the movable clamping jaw are installed on the female head pipe. The handle is rotationally mounted on the female head tube; the movable clamping jaw and the fixed clamping jaw are mounted at the quick connecting end of the female head pipe; the rotating shell is fixed to the handle and rotates along with the handle, a groove is formed in the rotating shell, a limiting plate extends out of the movable clamping jaw to be inserted into the groove, and the limiting plate leaves the groove when the movable clamping jaw is matched with the fixed clamping jaw to clamp the fixed male head. The pipe joint set comprises the female joint and a male joint matched with the female joint, the female joint pipe is provided with an anti-overhead pin, the end face of the male joint is provided with an avoiding hole corresponding to the anti-overhead pin, and the anti-overhead pin and the avoiding hole are matched in an inserted mode to conduct circumferential limiting. The chemical pipeline joint has the effects of preventing misoperation of personnel and improving the safety of the chemical pipeline joint.

Description

Technical Field

[0001] This application relates to the field of pipe connectors, and in particular to a female pipe joint with a valve and a pipe joint group. Background Art

[0002] A pipe joint is a connecting tool between pipes and is a connection point for quick disassembly and assembly between pipes.

[0003] When a pipe joint is applied to the chemical industry, since the transported medium may be a toxic or corrosive gas or liquid, for safety reasons, the requirements for the safety and anti-misoperation settings of the pipe joint are relatively high.

[0004] In the related art, a pipe joint includes a male head and a female head. Most of the time, the male head and the female head are directly and quickly installed through a threaded structure, a steel ball clamping, etc. When the pipe joint is applied to the chemical industry, it is necessary to ensure that the medium can only be passed after the pipe joint is connected properly to avoid leakage of toxic or corrosive media; the requirements for the safety of the pipe joint and the operator are relatively high, and the operator should try to avoid operating errors.

[0005] In view of the above related art, the applicant has designed a female pipe joint with a valve and a pipe joint group, which can effectively prevent misoperation by personnel and ensure the safety during the transportation of chemical pipelines. Summary of the Utility Model

[0006] On the one hand, this application provides a female pipe joint with a valve, adopting the following technical solution:

[0007] A female pipe joint with a valve includes a female head pipe, a handle, and a fixed claw and a movable claw installed at the quick-connection end of the female head pipe; the handle is rotatably installed on the female head pipe and controls the opening and closing of the female head pipe by rotation; the movable claw is rotatably installed on the female head pipe, the fixed claw is fixed on the female head pipe, and the fixed claw and the movable claw are respectively installed on both sides of the female head pipe to cooperate to clamp the male head; it further includes a rotating housing, the rotating housing is fixed on the handle and rotates with the handle, a groove is opened on one side of the rotating housing close to the movable claw, a limiting plate extends on one side of the movable claw close to the groove, and when the movable claw cooperates with the fixed claw to clamp and fix the male head, the limiting plate just leaves the groove.

[0008] By adopting the above technical solution, when the movable claw at the quick-connect end of the female head pipe does not cooperate with the fixed claw to clamp and fix the male head, the limit plate of the movable claw is inserted into the groove of the rotating housing, and the limit plate restricts the rotation of the rotating housing, thereby restricting the rotation of the handle; this setting can effectively prevent the operator from accidentally rotating the handle to open the valve when the male head and the female head are not reliably fixed, reducing the risk of medium leakage. After the fixed claw and the movable claw cooperate to clamp and fix the male head, the limit plate disengages from the groove, thereby releasing the restriction of the limit plate on the rotating housing. At this time, the female head pipe can be opened by rotating the handle to realize pipeline connection.

[0009] Optionally, it further includes an internal thread sleeve and a shaft bolt. A connection hole corresponding to the internal thread sleeve is provided on the movable claw. The shaft bolt passes through the connection hole and is screwed into the internal thread sleeve, and the movable claw rotates with the shaft bolt as the rotation axis.

[0010] By adopting the above technical solution, the shaft bolt cooperates with the internal thread sleeve to rotatably install the movable claw with the shaft bolt as the rotation axis; when the shaft bolt is tightened, the position of the movable claw is fixed; when the shaft bolt is loosened, the movable claw can rotate around the shaft bolt, facilitating the installation and disassembly of the male head.

[0011] Optionally, it further includes a limit screw and a positioning nut. The positioning nut is screwed on the limit screw; a through hole for passing through the limit screw is provided through the movable claw. The limit screw passes through the through hole and abuts against the female head pipe, and the positioning nut is welded and fixed on the movable claw.

[0012] By adopting the above technical solution, when adjusting the position of the positioning nut on the limit screw so that the limit screw passes through the through hole and abuts against the female head pipe, the limit plate disengages from the groove; when the movable claw clamps and fixes the male head, it is necessary to tighten the circumferential bolt to fix the movable claw. To ensure that the movable claw does not rotate during this process, the limit screw can be rotated first to abut against the female head pipe to maintain the position of the rotating claw, ensuring that after the shaft bolt locks the movable claw, the limit plate does not interfere with the groove wall of the groove.

[0013] Optionally, it further includes a compression spring. The compression spring is abutted and arranged between the outer side wall of the female head pipe and the movable claw and drives the movable claw to close. The compression spring is located on the side of the shaft bolt close to the female head pipe.

[0014] By adopting the above technical solution, the compression spring is provided so that the movable claw can automatically return to the clamping position and remain stationary, preventing the movable claw from randomly shaking and damaging the female head structure, which is convenient for use.

[0015] Optionally, an elastically liftable pressing member is provided on the side wall of the female head pipe, and a limiting groove for accommodating the pressing member is formed on the side wall of the rotating housing close to the pressing member. When the handle is rotated to open the female head pipe, the pressing member corresponds to the limiting groove on the rotating housing; the pressing member includes a pressing portion and a clamping portion. When the pressing member rises, the clamping portion is located in the limiting groove, and the pressing portion is located outside the rotating housing.

[0016] By adopting the above technical solution, when the female head pipe is opened, the limiting groove on the rotating housing just moves to the position of the pressing member. The pressing member rises to insert its clamping portion into the limiting groove on the rotating housing, and the pressing member restricts the rotation of the rotating housing, thereby restricting the rotation of the handle, preventing the operator from accidentally rotating the handle to close the female head pipe and affecting the transportation of the medium in the pipeline; when wanting to close the valve, press the pressing portion of the pressing member to make the pressing member descend, and the clamping portion disengages from the limiting groove, releasing the restriction on the rotating housing, and the handle can rotate continuously at this time; when wanting to close the valve, press the pressing portion of the pressing member to make the pressing member descend and the clamping portion disengage from the limiting groove, releasing the restriction on the rotating housing, and the handle can rotate continuously at this time.

[0017] Optionally, a vertical chute for slidably mounting the pressing member is provided on the female head pipe. The pressing member is in sliding fit with the vertical chute, and a support spring for supporting the pressing member is provided in the vertical chute.

[0018] By adopting the above technical solution, the pressing member rises and falls along the direction of the vertical chute, and the support spring provides a supporting force for the pressing member. When the limiting groove moves above the pressing member, the support spring automatically pushes the pressing member up and into the limiting groove to form an anti-misoperation limit.

[0019] Optionally, the female head pipe includes a pipe body, a rotating shaft rotatably mounted on the pipe body, and a valve slidably mounted in the pipe body; one end of the rotating shaft passes through the pipe body and is fixed to the handle, and the other end of the rotating shaft penetrates into the pipe body; a crankshaft block and a connecting rod for connecting the rotating shaft and the valve are provided in the pipe body. The crankshaft block is fixed on the rotating shaft. Both ends of the connecting rod are respectively hinged to the valve and the crankshaft block, and the hinge axis is parallel to the rotating shaft. The hinge axis of the connecting rod and the crankshaft block is located on the side of the rotating shaft away from the valve, and the connecting rod is an S-shaped rod arranged to avoid the rotating shaft.

[0020] By adopting the above technical solution, when the handle is rotated, the rotating shaft starts to rotate along its own axis, and the process of changing from rotation to sliding is realized through the crankshaft block and the connecting rod connecting the rotating shaft and the valve. The valve maintains axial sliding through the guide sleeve and the guide pin, realizing the function that the handle rotation can open and close the quick-connect end of the female head pipe.

[0021] In a second aspect, the present application further provides a pipe joint assembly using the above-mentioned female pipe joint, adopting the following technical solution:

[0022] A pipe joint assembly includes the above-mentioned female pipe joint with a valve, and further includes a male head that mates with the female head; an annular groove for engaging with the fixed claw and the movable claw is provided at one end of the male head close to the female head; a pin preventer is slidably provided on the outer surface of the female head pipe on one side close to the rotating housing, the pin preventer slides axially along the female head pipe, the pin preventer is provided on the side of the rotating housing close to the movable claw, an elastic member for moving the pin preventer toward the movable claw is provided between the pin preventer and the female head pipe, and the pin preventer penetrates the end face of the female head pipe; an avoidance hole is provided on the end face of the male head corresponding to the pin preventer; a limiting groove is provided on the side of the rotating housing close to the pin preventer; when the pin preventer is immersed in the end face of the female head pipe, the other end of the pin preventer is inserted into the limiting groove.

[0023] By adopting the above technical solution, the fixed claw and the movable claw are simultaneously engaged in the annular groove of the male head, connecting the male head and the female head together; the pin preventer can axially move along itself through the elastic member and be inserted into the avoidance hole, limiting the relative circumferential position of the male head and the female head, which helps to improve the sealing performance of the pipe joint assembly; when the circumferential position of the male head and the female head is not fixed and the pin preventer is pressed into the end face of the female head pipe by the end face of the male head, the other end of the pin preventer is inserted into the limiting groove of the rotating housing, restricting the rotation of the rotating housing, and further restricting the rotation of the handle, preventing the staff from opening the pipeline when the pipe joint assembly is not finally connected, preventing personnel from misoperating, and improving safety.

[0024] Optionally, two mounting plates are arranged in parallel on the side wall of the female head pipe, a sliding hole is coaxially penetrated through the mounting plate corresponding to the pin preventer, and the pin preventer is slidably mounted in the sliding hole; a rod body groove is provided on the rod body of the pin preventer between the two mounting plates, and a snap ring protruding from the circumferential side of the pin preventer is mounted on the rod body groove; the elastic member is a spring, and the spring is abutted between the snap ring and the mounting plate far from the movable claw; a limiting block is provided on the female head pipe close to the pin preventer, one end of the pin preventer is screwed onto the limiting block by a thread, and the cross-sectional contour of the limiting block is larger than the cross-sectional contour of the pin preventer.

[0025] By adopting the above technical solution, when the male head pushes open the pin preventer and the circumferential position of the male head and the female head is determined, the pin preventer slides axially toward the rotating housing, the pin preventer pushes the limiting block to slide out of the limiting groove, releasing the restriction on the limiting groove, so that the rotating housing and the handle can rotate to open the valve; at the same time, during the movement of the pin preventer, the spring is compressed by the snap ring, and under the resilience of the spring, the pin preventer extends out of the end face of the female head pipe and is inserted into the avoidance hole on the male head, limiting the circumferential position of the end face of the male head during pipeline transportation.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The present application discloses a female pipe joint with a valve. The female head clamps and fixes the male head through the cooperation of a movable claw and a fixed claw; by inserting the limiting plate on the movable claw into the groove on the rotating housing, the rotation of the rotating housing is restricted, and thus the rotation of the handle is restricted, preventing the operator from accidentally rotating the handle to open the valve; after the fixed claw and the movable claw cooperate to clamp and fix the male head, the extension plate can be disengaged from the groove, thereby releasing the restriction of the extension plate on the rotating housing. At this time, the female head pipe can be opened by rotating the handle; it can effectively reduce potential safety hazards and prevent medium leakage.

[0028] 2. Further, after the valve is opened, the pressing part engaging portion is inserted into the limiting groove on the rotating housing, restricting the rotation of the rotating housing, and thus restricting the rotation of the handle, preventing the operator from accidentally rotating the handle to close the valve and affecting the transportation of the medium in the pipeline.

[0029] 3. The present application also discloses a pipe joint set, including the above-mentioned female head and a male head that cooperates with the female head. The fixed claw and the movable claw are simultaneously clamped in the annular clamping groove of the male head, connecting the male head and the female head together; the anti-opening pin can axially move along itself through the elastic member and be inserted into the avoidance hole to limit the relative circumferential position of the male head and the female head, which helps to improve the sealing performance of the pipe joint set; when the circumferential position of the male head and the female head is not fixed and the anti-opening pin is pressed into the end face of the female head pipe by the end face of the male head, the other end of the anti-opening pin is inserted into the limiting groove of the rotating housing, restricting the rotation of the rotating housing, and thus restricting the rotation of the handle, preventing the staff from opening the pipeline when the pipe joint set is not finally connected, preventing human misoperation, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0031] Figure 2 is Figure 1 the A-A cross-sectional view of;

[0032] Figure 3 is the exploded schematic diagram of the handle mounting structure;

[0033] Figure 4 of Figure 1 the B-B cross-sectional view of;

[0034] Figure 5 is the structural schematic diagram in the valve open state;

[0035] Figure 6 is Figure 1 the cross-sectional view of;

[0036] Figure 7 is Figure 6 A C-C cross-sectional view of the female head tube in

[0037] Figure 8 is Figure 6 An enlarged view of area D in

[0038] Figure 9 A schematic diagram of the overall structure of the pipe joint group.

[0039] Description of the drawings: 1. Female head; 2. Female head tube; 21. Handle; 211. Fastening bolt; 212. Pin; 22. Pipe body; 221. Fixed clamping jaw; 222. Internal thread sleeve; 223. Boss; 224. Vertical chute; 225. Mounting plate; 226. Sliding hole; 23. Rotating shaft; 24. Valve; 25. Crankshaft block; 26. Connecting rod; 3. Movable clamping jaw; 31. Limiting plate; 32. Connecting hole; 33. Limiting screw; 34. Locking nut; 35. Compression spring; 36. Shaft bolt; 37. Connecting plate; 4. Pressing member; 41. Pressing part; 42. Clamping part; 43. Supporting spring; 5. Rotating housing; 51. Upper housing; 511. Slot; 512. Block; 513. Groove; 52. Lower housing; 521. Insert block; 522. Limiting groove; 7. Anti-opening pin; 71. Elastic member; 72. Rod body slot; 73. Snap ring; 8. Limiting block; 9. Male head; 91. Pipe fitting one; 911. Sliding sleeve; 92. Pipe fitting two; 921. Annular slot; 922. Avoidance hole; 93. Valve core plate; 931. Sliding rod. Detailed implementation manners

[0040] The following further elaborates on this application Figures 1-9 with reference to the appended drawings.

[0041] The embodiment of this application discloses a pipe joint female head with a valve and a pipe joint group.

[0042] A pipe joint female head with a valve, referring to Figure 1 , includes a female head 1 tube, a handle 21 rotatably installed on the female head 1 tube, and fixed clamping jaws 221 and movable clamping jaws 3 installed on both sides of the quick-connection end of the female head 1 tube; the handle 21 controls the opening and closing of the female head 1 tube by rotation.

[0043] Referring to Figure 2, an internal thread sleeve 222 is provided on the outer surface of the female head 1 tube. There are two internal thread sleeves 222, which are symmetrically arranged on both sides of the female head 1 tube; on both sides of the movable claw 3, connecting plates 37 are provided corresponding to the threaded holes of the two internal thread sleeves 222, and connecting holes 32 are penetrated through the connecting plates 37 of the movable claw 3 corresponding to the threaded holes; between the movable claw 3 and the internal thread sleeve 222, a shaft bolt 36 is provided for connection, and the shaft bolt 36 passes through the connecting hole 32 and is screwed into the internal thread sleeve 222. In the loosened state of the shaft bolt 36, the movable claw 3 can rotate with the shaft bolt 36 as the rotation axis; when the shaft bolt 36 is tightened, the position of the movable claw 3 is fixed, and it can cooperate with the fixed claw 221 for clamping and fixing.

[0044] Refer to Figure 1 and Figure 3 , the female head 1 tube includes a tube body 22 and a rotating shaft 23 rotatably installed on the tube body 22; a rotating housing 5 is also provided between the handle 21 and the tube body 22, and the rotating housing 5 includes two parts: an upper housing 51 and a lower housing 52; the lower housing 52 and the upper housing 51 are sequentially sleeved on the rotating shaft 23, and on the abutting surfaces of the upper housing 51 and the lower housing 52, inserting blocks 521 and inserting slots 511 that mesh with each other are provided, and the upper housing 51 and the lower housing 52 are synchronously rotated through the cooperation of the inserting block 521 and the groove 513; the upper end surface of the upper housing 51 is in plug-in fit with the rotating shaft 23. The handle 21 is located above the upper housing 51, and one end of the handle 21 close to the rotating shaft 23 is provided with a split-type hoop structure. The end of the handle 21 is sleeved on the rotating shaft 23 and fixed to the rotating shaft 23 by inserting a pin 212 to drive the rotating shaft 23 to rotate, and a fastening bolt 211 is installed at the end of the handle 21 for locking; two clamping blocks 512 are integrally provided on the end surface of the upper housing 51 close to the handle 21, and the handle 21 is clamped between the two clamping blocks 512 so that the rotation of the handle 21 drives the rotation of the upper housing 51, and the rotation of the upper housing 51 drives the rotation of the lower housing 52.

[0045] Refer to Figure 1 and Figure 3 , when the handle 21 controls the female head 1 tube to be in the closed state, a groove 513 is provided on the side of the upper housing 51 of the rotating housing 5 close to the movable claw 3; a limiting plate 31 is provided on the side of the movable claw 3 close to the rotating housing 5, and the end of the limiting plate 31 can be inserted into the groove 513 as the movable claw 3 rotates. When the cooperation between the movable claw 3 and the fixed claw 221 is in the open state, the limiting plate 31 on the movable claw 3 is inserted into the groove 513 on the rotating housing 5, and the limiting plate 31 restricts the rotation of the rotating housing 5, thereby restricting the rotation of the handle 21 and preventing the handle 21 from being rotated to open the female head 1 tube; when the cooperation between the movable claw 3 and the fixed claw 221 is in the closed state, that is, when clamping and connecting with the mating male head 9, the limiting plate 31 on the movable claw 3 disengages from the groove 513 on the rotating housing 5, and the handle 21 can be rotated, allowing the handle 21 to be rotated to open the female head 1 tube.

[0046] A positioning nut 34 is fixedly welded to the side wall of the limit plate 31 on the movable jaw 3, and a through hole is coaxially formed through the threaded hole of the limit plate 31 corresponding to the positioning nut 34; a limit screw 33 is screwed into the positioning nut 34, and the limit screw 33 can pass through the positioning nut 34 and the movable jaw 3 and abut against the rotating housing 5 to ensure that the limit plate 31 is separated from the groove 513, so as to ensure that the handle 21 can rotate smoothly after the position of the movable jaw 3 is fixed; there is a boss 223 integrally cast with the female head 1 pipe on the outer side wall of the female head 1 pipe, and a compression spring 35 is arranged in contact between the boss 223 and the movable jaw 3. The compression spring 35 can make the movable jaw 3 automatically return to its original state, facilitating the use of the entire female head 1 pipe.

[0047] Refer to Figure 3 and Figure 4 As shown in the figure, a pressing member 4 is installed on one side of the rotating housing 5. The pressing member 4 includes a clamping portion 42 and a pressing portion 41 integrally provided. A vertical chute 224 is welded on the pipe body 22 of the female head 1 pipe along the axial direction of the rotating shaft 23, and the pressing member 4 is slidably inserted into the vertical chute 224 to lift and lower along the axial direction of the rotating shaft 23. A support spring 43 for supporting the pressing member 4 is arranged in the vertical chute 224. One end of the support spring 43 abuts against the lower part of the clamping portion 42, and the other end of the support spring 43 abuts against the side wall of the female head 1 pipe; to ensure the stable position of the support spring 43, embedding grooves are correspondingly arranged on the side walls of the clamping portion 42 and the pipe body 22 for the support spring 43. Refer to Figure 4 As shown in the figure, when the handle 21 is not rotated to open the female head 1 pipe, the lower housing 52 of the rotating housing 5 presses the clamping portion 42 to compress the support spring 43, and the entire pressing member 4 retracts into the vertical chute 224.

[0048] Refer to Figure 3 and Figure 5 As shown in the figure, a limit groove 522 is formed on the lower housing 52 of the rotating housing 5. When the handle 21 is rotated to open the female head 1 pipe, the limit groove 522 on the rotating housing 5 is located directly above the clamping portion 42 of the pressing member 4. The clamping portion 42 of the pressing member 4 rises along the vertical chute 224 under the elastic force of the support spring 43, and the clamping portion 42 of the pressing member 4 is inserted into the limit groove 522 to limit the rotation of the rotating housing 5, thereby restricting the rotation of the handle 21 and preventing the female head 1 pipe from being accidentally closed due to operational errors; when wanting to close the female head 1 pipe, press the pressing portion 41 of the pressing member 4 to make the pressing member 4 descend along the vertical chute 224, and the clamping portion 42 of the pressing member 4 disengages from the limit groove 522, and the handle 21 can be rotated to close the female head 1 pipe.

[0049] Refer to Figure 6 and Figure 7, the female head 1 tube includes the above-mentioned tube body 22 and the rotating shaft 23, and also includes a valve 24 slidably installed in the tube body 22. The fixed claw 221 is a claw structure integrally provided on the tube body 22. The valve 24 is slidably fitted with one end of the tube body 22 close to the fixed claw 221, and a sealing ring is embedded on the circumferential side of the valve 24; a crankshaft block 25 and a connecting rod 26 connecting the rotating shaft 23 and the valve 24 are also provided in the tube body 22. The crankshaft block 25 is fixed on the rotating shaft 23, and both ends of the connecting rod 26 are hingedly connected to the valve 24 and the crankshaft block 25 respectively. The rotating shafts of the two hinges are parallel to the rotating shaft 23; the hinge shaft of the connecting rod 26 and the crankshaft block 25 is located on the side of the rotating shaft 23 away from the valve 24, and the connecting rod 26 is arranged as an S-shaped rod that avoids the rotating shaft 23. The rotating handle 21 drives the rotating shaft 23 to rotate, the crankshaft block 25 rotates with the rotating shaft 23 to pull the connecting rod 26, and the connecting rod 26 pulls the valve 24 to slide to open or close the nozzle of the female head 1 tube.

[0050] Referring to Figure 6 and Figure 8 , on the outer surface of the female head 1 tube, on the side close to the movable claw 3, there is a anti-pin 7 sliding axially along the female head 1 tube. On the side wall of the female head 1 tube, at the position corresponding to the anti-pin 7, there are two parallel mounting plates 225 integrally provided. A coaxial through sliding hole 226 is provided on the mounting plate 225 corresponding to the anti-pin 7; a limiting block 8 is provided at one end of the anti-pin 7 close to the rotating housing 5. The end of the anti-pin 7 is provided with threads and screwed and fixed on the limiting block 8. The cross-sectional area of the limiting block 8 is larger than the cross-sectional area of the anti-pin 7 to prevent the anti-pin 7 from detaching from the sliding hole 226; a rod body slot 72 is provided on the rod body of the anti-pin 7. The rod body slot 72 is located between the two mounting plates 225. A snap ring 73 is installed in the rod body slot 72, and an elastic member 71 is abutted between the snap ring 73 and the mounting plate 225 close to the limiting block 8. The elastic member 71 is a spring sleeved on the anti-pin 7. When the female head 1 is in the closed state, after the end of the limit pin completely sinks into the end face of the tube body 22, the limiting block 8 is inserted into the limiting slot 522 on the lower housing 52 to limit the rotation of the lower housing 52.

[0051] The implementation principle disclosed in the embodiments of this application is as follows: When the fixed jaw 221 and the movable jaw 3 are clamped and cooperated with the male head 9, the limiting plate 31 of the movable jaw 3 disengages from the groove 513 on the rotating housing 5, and the screwing screw abuts against the rotating housing 5 to ensure that the limiting plate 31 disengages from the groove 513; the falling off of the limiting plate 31 from the groove 513 releases the rotation restriction on the rotating housing 5, so that the handle 21 can be rotated to open the female head 1 pipe; after the handle 21 fully opens the female head 1 pipe, the limiting groove 522 on the rotating housing 5 just rotates above the pressing member 4, and the clamping portion 42 of the pressing member 4 is inserted into the limiting groove 522 to limit the rotation of the rotating housing 5, that is, to prevent the handle 21 from closing the female head 1 pipe; when it is necessary to close the female head 1 pipe, the pressing member 4 needs to be pressed to smoothly rotate the handle 21. By setting the cooperation between the limiting plate 31 and the groove 513, it is prevented from being opened when the female head 1 and the male head 9 are not properly connected, which plays a role in preventing misoperation and improves safety; the cooperation between the pressing member 4 and the limiting groove 522 prevents the female head 1 pipe from being misclosed, which helps to ensure the normal supply of the pipeline medium and the normal progress of the chemical reaction.

[0052] Reference Figure 9 , the pipe joint group includes the above-mentioned female head 1 and the male head 9 adapted to the female head 1.

[0053] The male head 9 includes a pipe fitting one 91 and a pipe fitting two 92 connected together by threads. A valve core plate 93 that slides axially along the pipeline is arranged inside the pipe fitting one 91 and the pipe fitting two 92; a through sliding sleeve 911 is coaxially arranged inside the pipe fitting one 91. Four plate bodies are arranged on the circumferential side of the sliding sleeve 911 and connected to the pipe fitting one 91. A sliding rod 931 is integrally arranged coaxially on one side of the valve core plate 93 close to the sliding sleeve 911, and the sliding rod 931 is slidably inserted into the sliding sleeve 911; a sealing ring is embedded on the circumferential side of the valve core plate 93, and the valve core plate 93 is in sealing cooperation with the port of the pipe fitting two 92; a spring is abutted between the valve core plate 93 and the sliding sleeve 911, and the spring exerts a supporting force on the valve core plate 93 to make the valve core plate 93 seal the port of the pipe fitting two 92. An annular clamping groove 921 is arranged on the circumferential side of the pipe fitting two 92 corresponding to the insertion end of the female head 1. The annular clamping groove 921 on the male head 9 is in clamping cooperation with the fixed jaw 221 and the movable jaw 3 on the female head 1, so that the male head 9 and the female head 1 pipe are connected together; an avoidance hole 922 is arranged on the end face of the pipe fitting two 92 corresponding to the anti-opening pin 7. When the male head 9 and the female head 1 pipe are clamped and cooperated, the anti-opening pin 7 on the female head 1 pipe can be inserted into the avoidance hole 922 to limit the relative circumferential position of the male head 9 and the female head 1 pipe and improve the sealing performance; the depth of the avoidance hole 922 is set so that when the anti-opening pin 7 is inserted into the avoidance hole 922 and abuts against the bottom of the hole, the limiting block 8 just disengages from the limiting groove 522 on the lower housing 52, so that the lower housing 52 can rotate smoothly. For the convenience of installation, two avoidance holes 922 are arranged and symmetrically distributed on both sides of the pipe fitting two 92.

[0054] The implementation principle of the pipe joint set is as follows: When the male head 9 and the female head 1 pipe are not clamped and mated, one end of the anti-opening pin 7 extends out of the end face of the female head 1 pipe, and the side of the limit block 8 away from the anti-opening pin 7 is inserted into the groove of the limit groove 522; When the male head 9 and the female head 1 pipe are clamped and mated but the circumferential position is not fixed, the end face of the male head 9 pushes the anti-opening pin 7 into the end face of the female head 1 pipe. During the movement of the anti-opening pin 7, the spring is compressed. The anti-opening pin 7 pushes the limit block 8 into the limit groove 522. One end of the limit block 8 close to the anti-opening pin 7 abuts against the groove wall of the limit groove 522, restricting the rotation of the rotating housing 5; When adjusting the circumferential position of the male head 9 so that the avoidance hole 922 corresponds to the position of the anti-opening pin 7, the anti-opening pin 7 is inserted into the avoidance hole 922 under the action of the resilience of the spring. At this time, the avoidance groove on the limit block 8 is at the lower position of the lower housing 52, enabling the lower housing 52 to rotate smoothly. The limit block 8 releases the rotation restriction on the rotating housing 5, and then the handle 21 can be rotated to open the female head 1 pipe.

[0055] The beneficial effects of this embodiment are as follows: Through the plug-in fit between the anti-opening pin 7 and the avoidance hole 922, the relative circumferential position of the male head 9 and the female head 1 pipe will not change easily, making the pipeline connection more stable, which helps to ensure the normal supply of pipeline medium and the normal progress of chemical reactions. By setting the elastically sliding anti-opening pin 7 and the limit block 8, the limit block 8 can restrict the rotation of the handle 21 when the female head 1 and the male head 9 are not fully assembled, effectively preventing the accidental opening of the pipeline and improving safety.

[0056] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

[0057] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A female pipe joint with a valve, characterized in that: It includes a female head (1) tube, a handle (21), a fixed claw (221) and a movable claw (3) installed at the quick-connect end of the female head (1) tube; the handle (21) is rotatably installed on the female head (1) tube and controls the opening and closing of the female head (1) tube by rotation; the movable claw (3) is rotatably installed on the female head (1) tube, the fixed claw (221) is fixed on the female head (1) tube, and the fixed claw (221) and the movable claw (3) are respectively installed on both sides of the female head (1) tube to cooperate to clamp a male head (9); it further includes a rotating housing (5), the rotating housing (5) is fixed on the handle (21) and rotates with the handle (21), a groove (513) is opened on one side of the rotating housing (5) close to the movable claw (3), a limiting plate (31) is extended and arranged on one side of the movable claw (3) close to the groove (513), and when the movable claw (3) cooperates with the fixed claw (221) to clamp and fix the male head (9), the limiting plate (31) just leaves the groove (513).

2. The female pipe joint with a valve according to claim 1, characterized in that: It further includes an internal thread sleeve (222) and a shaft bolt (36), a connection hole (32) corresponding to the internal thread sleeve (222) is arranged on the movable claw (3), the shaft bolt (36) passes through the connection hole (32) and is screwed into the internal thread sleeve (222), and the movable claw (3) rotates with the shaft bolt (36) as the rotation axis.

3. The female pipe joint with a valve according to claim 2, characterized in that: It further includes a limiting screw (33) and a positioning nut (34), the positioning nut (34) is screwed on the limiting screw (33); a through hole for passing through the limiting screw (33) is penetrated and opened on the movable claw (3), the limiting screw (33) passes through the through hole and abuts against the female head (1) tube, and the positioning nut (34) is welded and fixed on the movable claw (3).

4. The female pipe joint with a valve according to claim 2, characterized in that: It further includes a compression spring (35), the compression spring (35) is abutted and arranged between the outer side wall of the female head (1) tube and the movable claw (3) and drives the movable claw (3) to close, and the compression spring (35) is located on the side of the shaft bolt (36) close to the female head (1) tube.

5. The female pipe joint with a valve according to claim 1, characterized in that: An elastic lifting pressing member (4) is arranged on the side wall of the female head (1) tube, a limiting groove (522) for accommodating the pressing member (4) is opened on the side wall of the rotating housing (5) close to the pressing member (4), and when the handle (21) rotates to open the female head (1) tube, the pressing member (4) corresponds to the limiting groove (522) on the rotating housing (5); the pressing member (4) includes a pressing part (41) and a clamping part (42), when the pressing member (4) rises, the clamping part (42) is located in the limiting groove (522), and the pressing part (41) is located outside the rotating housing (5).

6. The female pipe joint with a valve according to claim 5, characterized in that: A vertical sliding groove (224) for slidably installing the pressing member (4) is arranged on the female head (1) tube, the pressing member (4) is slidably matched with the vertical sliding groove (224), and a support spring (43) for supporting the pressing member (4) is arranged in the vertical sliding groove (224).

7. The female pipe joint with a valve according to claim 1, characterized in that: The female head (1) tube includes a tube body (22), a rotating shaft (23) rotatably mounted on the tube body (22), and a valve (24) slidably mounted in the tube body (22); one end of the rotating shaft (23) passes through the tube body (22) and is fixed to the handle (21), and the other end of the rotating shaft (23) penetrates into the tube body (22); a crankshaft block (25) and a connecting rod (26) for connecting the rotating shaft (23) and the valve (24) are arranged in the tube body (22), the crankshaft block (25) is fixed on the rotating shaft (23), and both ends of the connecting rod (26) are hinged to the valve (24) and the crankshaft block (25) respectively, and the hinge axis is parallel to the rotating shaft (23). The hinge axis of the connecting rod (26) and the crankshaft block (25) is located on the side of the rotating shaft (23) away from the valve (24), and the connecting rod (26) is an S-shaped rod arranged to avoid the rotating shaft (23).

8. A pipe joint set, characterized in that: A female head of a pipe joint with a valve according to any one of claims 1-7 further includes a male head (9) matching with the female head (1); an annular groove (921) for clamping with the fixed claw (221) and the movable claw (3) is arranged at one end of the male head (9) close to the female head (1); a anti-opening pin (7) is slidably arranged on the outer surface of the female head (1) tube on the side close to the rotating housing (5), the anti-opening pin (7) slides axially along the female head (1) tube, the anti-opening pin (7) is arranged on the side of the rotating housing (5) close to the movable claw (3), and an elastic member (71) for moving the anti-opening pin (7) towards the movable claw (3) is arranged between the anti-opening pin (7) and the female head (1) tube. The anti-opening pin (7) penetrates the end face of the female head (1) tube; an avoidance hole (922) corresponding to the anti-opening pin (7) is arranged on the end face of the male head (9); a limit groove (522) is arranged on the side of the rotating housing (5) close to the anti-opening pin (7); when the anti-opening pin (7) is immersed in the end face of the female head (1) tube, the other end of the anti-opening pin (7) is inserted into the limit groove (522).

9. A pipe joint set according to claim 8, characterized in that: Two mounting plates (225) are arranged in parallel on the side wall of the female head (1) tube, a sliding hole (226) is coaxially penetrated corresponding to the anti-opening pin (7) on the mounting plate (225), and the anti-opening pin (7) is slidably mounted in the sliding hole (226); a rod body groove (72) is arranged on the rod body of the anti-opening pin (7) between the two mounting plates (225), and a snap ring (73) protruding from the periphery of the anti-opening pin (7) is mounted on the rod body groove (72); the elastic member (71) is a spring, and the spring is abutted between the snap ring (73) and the mounting plate (225) away from the movable claw (3); a limit block (8) is arranged on the female head (1) tube on the side close to the anti-opening pin (7), one end of the anti-opening pin (7) is screwed on the limit block (8) by threads, and the cross-sectional profile of the limit block (8) is larger than the cross-sectional profile of the anti-opening pin (7).

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