Pipeline connector

Abstract

The utility model relates to the technical field of connectors, and discloses a pipeline connector which comprises a valve body shell of a hollow structure and a valve element arranged in the valve body shell in the length direction of the valve body shell. The end, close to the connecting end, of the inner wall of the valve body shell is provided with a connecting opening defined by first protruding parts, the connecting opening is connected with the valve element in a sealed mode, the valve element can move back and forth in the length direction of the valve body shell, and a pressure relief mechanism is arranged on the valve element and comprises an exhaust hole and a valve needle moving in the length direction of the valve element. The exhaust hole is a first through hole communicated with the two ends of the valve element, and the valve needle is inserted into the exhaust hole and connected with the exhaust hole in a sealed mode. The pipeline connector further comprises a rotating mechanism, a pull rod, a connecting shaft and a pull hook, and the rotating mechanism drives the connecting shaft to rotate and drives the pull hook to rotate so as to push the pull rod to move in the direction away from the connecting opening. In the moving process of the pull rod, the valve element is separated from the exhaust hole firstly to release pressure, and the pull rod pulls the valve element to be separated from the connecting opening after pressure release, so that communication with the opposite-end pipeline connector is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a pipeline connector. Background Art

[0002] At present, in the loading and unloading of liquefied gas, a combination of a handle-type quick connector and a ball valve is generally used. The two cam handles of the female head slide and rub against the joint of the male head (cam clamping method), and the piston-type O-ring in the female head is squeezed to achieve sealing. When the two cam handles of the female head are connected with the male head, the two cam handles and the arc-shaped groove of the male head are completely moved by hand to contact and rub against each other to clamp, which causes the two cams and the male head to wear each other, and the wear leads to seal failure, leakage, large leakage, and short service life;

[0003] The existing pipeline connector is sealed and connected to the butt joint through one end, and the connecting end is provided with a movable shell and a claw for clamping the pipeline connector at the opposite end, so that the connecting parts of the butt-jointed pipeline connectors can be fully clamped, thereby improving the sealing performance, thereby reducing leakage and increasing the service life; however, when the valve core is sealed, the internal material will exert a large pressure on the sealing part of the valve core. At this time, in order to pull the valve core to achieve communication and feeding between the butt-jointed pipeline connectors, it is necessary to overcome a large resistance, which reduces work efficiency and may even cause damage to the pipeline connector itself or cause harm to the operator. Utility Model Content

[0004] The utility model aims to provide a pipeline connector, which effectively reduces the resistance that needs to be overcome when opening a valve core to connect pipeline connectors for feeding, thereby improving safety and work efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a pipeline connector, comprising a valve body shell of a hollow structure and a valve core arranged inside the valve body shell along the length direction of the valve body shell; one end of the valve body shell is a connecting end, and the other end is a fixed end; a first protrusion is provided at one end of the inner wall of the valve body shell close to the connecting end, and the first protrusion is arranged circumferentially along the inner wall of the valve body shell and encloses a connecting port, the connecting port and the valve core are sealed and connected, and the valve core can make a reciprocating motion along the length direction of the valve body shell; a pressure relief mechanism is provided on the valve core, and the pressure relief mechanism comprises an exhaust hole and a valve needle moving along the length direction of the valve core, the exhaust hole is a first through hole connecting the two ends of the valve core, and the valve needle is inserted into the exhaust hole and is sealed and connected to the exhaust hole;

[0006] A main spring is sleeved on the valve core, and the pipeline connector also includes a rotating mechanism, a pulling rod, a connecting shaft and a hook. The pulling rod is connected to the valve core, one end of the hook abuts against the pulling rod, and the other end is connected to the connecting shaft. The connecting shaft is connected to the rotating mechanism, and the rotating mechanism drives the connecting shaft to rotate, and drives the hook to rotate to push the pulling rod to move in a direction away from the connecting port.

[0007] Preferably, the valve core is provided with a slide groove arranged along its length direction, and the pull rod is arranged in the slide groove and can move along the slide groove; the pressure relief mechanism also includes a seal, a positioning column and a drive cover; the seal is arranged at the edge of the exhaust hole, and the valve needle is connected to the drive cover through the positioning column, the drive cover is sleeved on the outer periphery of the valve core and connected to the pull rod, one end of the drive cover is connected to the main spring, and the pull rod can drive the drive cover to move along the length direction of the valve body shell when moving in the slide groove, and drive the valve needle to move along the length direction of the valve body shell to be pulled out of or inserted into the exhaust hole.

[0008] Preferably, a strip through hole passing through the slide groove is provided on the valve core along an opening direction perpendicular to the slide groove; the pulling rod passes through the strip through hole and is fixedly connected to the driving cover on both sides of the valve core, and the strip through hole has a certain distance along the length direction of the slide groove, so that the pulling rod can move in the strip through hole; an avoidance groove corresponding to the slide groove is provided on the driving cover, and the pulling hook passes through the avoidance groove and abuts against the pulling rod in the slide groove.

[0009] Furthermore, the pulling rod includes a pulling rod body and a protective cover, and the pulling rod body is connected to the driving cover; the protective cover is sleeved on the part of the pulling rod body located in the sliding groove, and the width of the protective cover is greater than the width of the strip through hole, and the protective cover abuts against the pull hook.

[0010] Specifically, the valve core includes a valve core body, a connecting rod and a connecting kit, the valve core body includes a sealing section and a connecting section connected to the sealing section, the sealing section is sealed and connected to the connecting port, the connecting section is connected to one end of the connecting rod, the other end of the connecting rod is connected to the connecting kit, the connecting kit is connected to the inner side wall of the valve body shell, and the main spring is sleeved on the connecting rod; the exhaust hole is provided on the sealing section and runs through both ends of the sealing section.

[0011] The diameter of the exhaust hole is 0.5-5 mm.

[0012] Preferably, a movable shell that can move along the length direction of the valve body shell is sleeved on the outer periphery of the connecting end, and the movable shell is respectively provided with second protrusions in the direction away from the connecting end; a plurality of second through holes are provided on the inner wall of the valve body shell close to the connecting end, and a trigger lock mechanism is provided in one of the second through holes; the trigger lock mechanism abuts against the second protrusion to prevent the movable shell from moving toward the connecting end; claws that are rotatably connected to the valve body shell are provided in the remaining second through holes, and the movable shell can abut and fix the claws;

[0013] One end of the movable housing away from the connecting end is connected with a guide and limiting mechanism to provide power for the movable housing to move toward the connecting end.

[0014] Preferably, the rotating mechanism is a handle.

[0015] Furthermore, a limit column is provided on the outer wall of the valve body shell, and the limit column is located on the rotation path of the handle to block the rotation of the handle; the handle is connected to the connecting shaft through a rotating shaft, the connecting shaft is parallel to the limit column, and the rotating shaft is perpendicular to the limit column; the handle can rotate around the rotating shaft in a direction away from the limit column to avoid the limit column.

[0016] In addition, a limit spring is sleeved on the outer periphery of the connecting shaft, and the handle is connected to the limit spring.

[0017] Compared with the prior art, the pipeline connector of the utility model embodiment has the following beneficial effects: the valve body shell and the valve core form a closed structure with a sealed connection at one end, and a main spring is sleeved on the end of the valve core away from the connection end. The connecting shaft is driven to rotate by a rotating mechanism arranged on the outer wall of the valve body shell, and the draw hook fixed on the connecting shaft rotates synchronously with the connecting shaft, and the pull rod arranged on the valve core is pulled to enable the valve core to reciprocate along the length direction of the valve body shell. A pressure relief mechanism (valve needle and exhaust hole) is provided on the valve core. Before using the rotating mechanism to open the valve core to connect the pipeline connector with the opposite end, the valve needle is first separated from the exhaust hole to relieve pressure, so that the pressure in the pipeline connector is reduced, and then the valve core is separated from the connection port. At this time, opening the valve core can greatly reduce the resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of the pipeline connector according to the embodiment of the utility model.

[0019] Figure 2 yes Figure 1 AA section view.

[0020] Figure 3 The utility model embodiment of the pipeline connector Figure 2 Enlarged view of point B in the middle.

[0021] Figure 4 This is a disassembly diagram of the valve core body of the pipeline connector according to an embodiment of the utility model.

[0022] Figure 5 It is a disassembly diagram of the valve core connecting rod of the pipeline connector according to the embodiment of the utility model.

[0023] Figure 6 It is a front view of the pipeline connector according to the embodiment of the utility model.

[0024] Figure 7 yes Figure 6 CC section view.

[0025] Figure 8 This is a disassembly diagram of the handle of the pipe connector according to the embodiment of the utility model.

[0026] In the figure, 1, valve body shell; 11, connecting end; 12, fixed end; 13, first protrusion; 14, connecting port; 2, valve core; 21, pressure relief mechanism; 211, exhaust hole (first through hole); 212, valve needle; 213, sealing member; 214, positioning column; 215, drive cover; 2151, avoidance groove; 22, main spring; 23, pull rod; 231, pull rod body; 232, protective cover; 24, slide groove; 25, strip through hole; 26, valve core body; 261, sealing section; 262, connecting section; 27, connecting rod; 28, connecting kit; 281, shaft sleeve; 282, main spring bracket;

[0027] 3. Rotating mechanism; 31. Rotating shaft; 32. Limiting spring; 4. Connecting shaft; 41. Draw hook; 5. Movable housing; 51. Second protrusion; 52. Second through hole; 53. Trigger lock mechanism; 531. First rotating member; 532. Second rotating member; 54. Claw; 6. Guide limiting mechanism; 61. Shift fork; 62. Shift fork column; 63. Shift fork spring; 64. Pull rod; 7. Limiting column. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like in the present invention is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1-Figure 4 As shown, a pipe connector of a preferred embodiment of the utility model comprises a valve body shell 1 of a hollow structure and a valve core 2 arranged inside the valve body shell 1 along the length direction of the valve body shell 1; one end of the valve body shell 1 is a connecting end 11, and the other end is a fixed end 12; a first protrusion 13 is provided on an end of the inner wall of the valve body shell 1 close to the connecting end 11, and the first protrusion 13 is arranged circumferentially along the inner wall of the valve body shell 1 and encloses a connecting port 14, the connecting port 14 is sealed and connected to the valve core 2, and the valve core 2 can make a reciprocating motion along the length direction of the valve body shell 1, and a pressure relief mechanism 21 is provided on the valve core 2, the pressure relief mechanism 21 comprises an exhaust hole 211 and a valve needle 212 moving along the length direction of the valve core 2, the exhaust hole 211 is a first through hole connecting the two ends of the valve core 2, and the valve needle 212 is inserted into the exhaust hole 211 and is sealed and connected to the exhaust hole 211;

[0031] A main spring 22 is sleeved on the valve core 2. The pipeline connector also includes a rotating mechanism 3, a pulling rod 23, a connecting shaft 4 and a hook 41. The pulling rod 23 is connected to the valve core 2. One end of the hook 41 abuts against the pulling rod 23, and the other end is connected to the connecting shaft 4. The connecting shaft 4 is connected to the rotating mechanism 3. The rotating mechanism 3 drives the connecting shaft 4 to rotate, and drives the hook 41 to rotate to push the pulling rod 23 to move away from the connecting port 14.

[0032] Specifically, the pipeline connector is a female connector. When in use, the connection end 11 at the upper end of the pipeline connector can be connected to the male connector to transfer materials; the fixed end 12 can be sealed and connected to the pipeline by threaded connection, flange connection or welding, and the valve body shell 1 can store materials; the first protrusion 13 abuts against the docking male connector, the upper end of the valve core 2 is a frustum structure, and the upper end of the valve core 2 is flush with the first protrusion 13 and sealed, so that the valve body shell 1 can store materials without leakage;

[0033] The outer wall of the valve body shell 1 is provided with a rotating mechanism 3, and the rotating mechanism 3 is connected to the connecting shaft 4; the connecting shaft 4 is perpendicular to the length direction of the valve body shell 1, and extends to the inside of the valve body shell 1 to be rotatably connected to the valve body shell 1, and a hook 41 is fixedly connected to the part of the connecting shaft 4 located inside the valve body shell 1, and the other end of the hook 41 abuts on the pull rod 23, and the pull rod 23 is connected to the valve core 2; the end of the valve core 2 away from the connecting port 14 is sleeved with a main spring 22;

[0034] After the connection between the pipe connector and the connector at the opposite end is completed, the valve core 2 needs to be opened to transmit materials, and the rotating mechanism 3 is rotated. The rotating mechanism 3 drives the connecting shaft 4 to rotate, and the hook 41 rotates around the connecting shaft 4. The pulling rod 23 is pulled to drive the valve core 2 to move away from the connecting port 14 to release the seal, thereby connecting the interconnected pipe connectors.

[0035] When material is stored in the valve body shell 1, the end of the valve core 2 that is sealed with the connecting port 14 will be subjected to greater pressure. When the pressure is too high, the valve core 2 may not be able to be opened. Therefore, the pipeline connector is provided with a pressure relief mechanism 21 on the valve core 2. The pressure relief mechanism 21 includes an exhaust hole 211 and a movable valve needle 212. When there is no need to connect to the opposite connector, the valve needle 212 is inserted into the exhaust hole 211, and the valve core 2 is in a sealed state as a whole. Before the valve core 2 needs to be opened, the valve needle 212 is first moved along the length direction of the valve core 2 to disengage from the exhaust hole 211 so that the inside of the valve body shell 1 is connected with the opposite end, and the pressure in the valve body shell 1 is relieved. After the pressure is relieved, the valve core 2 can be easily opened. Since the valve needle 212 has a small contact surface with the material, the resistance required to move the valve needle 212 is much smaller than the resistance required to move the valve core 2.

[0036] The valve core 2 is provided with a slide groove 24 arranged along its length direction, and the pulling rod 23 is arranged in the slide groove 24 and can move along the slide groove 24; the pressure relief mechanism 21 also includes a sealing member 213, a positioning column 214 and a driving cover 215; the sealing member 213 is arranged at the edge of the exhaust hole 211, and the valve needle 212 is connected to the driving cover 215 through the positioning column 214. The driving cover 215 is sleeved on the outer periphery of the valve core 2 and connected to the pulling rod 23. One end of the driving cover 215 is connected to the main spring 22. When the pulling rod 23 moves in the slide groove 24, it can drive the driving cover 215 to move along the length direction of the valve body shell 1, and drive the valve needle 212 to move along the length direction of the valve body shell 1 to be pulled out of the exhaust hole 211 or inserted into the exhaust hole 211.

[0037] Specifically, Figure 2As shown, the sealing member 213 is arranged at one end of the exhaust hole 211 close to the valve needle 212. When the valve needle 212 is inserted into the exhaust hole 211, it can be sealed and connected with the sealing member 213, which greatly improves the sealing performance of the connection between the valve needle 212 and the valve core 2. The valve needle 212 is fixed on the driving cover 215 through a positioning column 214 arranged vertically therewith; the lower end of the driving cover 215 is connected to the main spring 22, and the main spring 22 always provides an upward thrust, so that the driving cover 215 is in a state of abutting against the valve core 2.

[0038] When the pull hook 41 pulls the pull rod 23 to move downward along the slide groove 24, the pull rod 23 drives the drive cover 215 to move downward to overcome the thrust of the main spring 22, and at the same time drives the valve needle 212 to disengage from the exhaust hole 211 to release the pressure; when the pull rod 23 moves to the lower end of the slide groove 24, the valve core 2 is pulled downward by the pull hook 41, and the pressure relief is completed at this time, and the valve core 2 can be opened more easily to separate the valve core 2 from the connecting port 14.

[0039] Preferably, a strip through hole 25 passing through the slide groove 24 is provided on the valve core 2 along the opening direction perpendicular to the slide groove 24; the pulling rod 23 passes through the strip through hole 25 and is fixedly connected to the driving cover 215 on both sides of the valve core 2, and the strip through hole 25 has a certain distance along the length direction of the slide groove 24, so that the pulling rod 23 can move in the strip through hole 25; an avoidance groove 2151 corresponding to the slide groove 24 is provided on the driving cover 215, and the pull hook 41 passes through the avoidance groove 2151 and abuts against the pulling rod 23 in the slide groove 24.

[0040] like Figure 3 and Figure 4 As shown, specifically, a certain distance of the strip through hole 25 along the length direction of the slide groove 24 is named as the opening length of the strip through hole 25; the strip through hole 25 and the slide groove 24 are both opened on the valve core 2, and the opening directions are perpendicular to each other; the pulling rod 23 passes through the strip through hole 25 and is fixedly connected to the driving covers 215 at both ends thereof, so that the driving cover 215 and the pulling rod 23 move together along the length direction of the valve core 2; the opening length of the strip through hole 25 is smaller than the length of the slide groove 24, and the opening length of the strip through hole 25 needs to ensure that the valve needle 212 is separated from the exhaust hole 211 before the pulling rod 23 moves to the lower end of the strip through hole 25, so as to ensure that the pressure relief is completed before the valve core 2 is forced to open; an avoidance groove 2151 corresponding to the slide groove 24 is opened on the driving cover 215, so that the pull hook 41 can pass through the avoidance groove 2151 into the slide groove 24 and abut against the pulling rod 23, so as to drive the pulling rod 23 to move along the slide groove 24.

[0041] Furthermore, the pulling rod 23 includes a pulling rod body 231 and a protective cover 232. The pulling rod body 231 is connected to the driving cover 215. The protective cover 232 is sleeved on the part of the pulling rod body 231 located in the slide groove 24, and the width of the protective cover 232 is greater than the width of the strip through hole 25. The protective cover 232 abuts against the hook 41. The protective cover 232 can rotate around the pulling rod body 231, so that the pulling operation of the hook 41 is smoother.

[0042] Specifically, the protective sleeve 232 is fixedly mounted on the outer periphery of the portion of the pull rod body 231 located in the slide groove 24, and is used to abut against the pull hook 41 to protect the pull rod body 231; and the width of the protective sleeve 232 is smaller than the width of the strip through hole 25, so that the pull rod 23 cannot move in its length direction, ensuring that the drive cover 215 and the valve needle 212 are not offset.

[0043] Preferably, the lower end of the slide groove 24 is extended along the length direction of the slide groove 24, and the extended length is the same as the thickness of the protective cover 232. When the pull rod body 231 moves to the lower end of the strip through hole 25, the protective cover 232 and the pull rod body 231 can abut against the valve core 2 at the same time, and the valve core 2 is more stable in the manufacturing process.

[0044] The valve core 2 includes a valve core body 26, a connecting rod 27 and a connecting kit 28. The valve core body 26 includes a sealing section 261 and a connecting section 262 connected to the sealing section 261. The sealing section 261 is sealed and connected to the connecting port 14. The connecting section 262 is connected to one end of the connecting rod 27. The other end of the connecting rod 27 is connected to the connecting kit 28. The connecting kit 28 is connected to the inner wall of the valve body shell 1. The main spring 22 is sleeved on the connecting rod 27. The exhaust hole 211 is provided on the sealing section 261 and runs through both ends of the sealing section 261.

[0045] Specifically, the lower end of the valve core body 26 is fixedly connected to the connecting rod 27, and the diameter of the connecting rod 27 is smaller than the diameter of the valve core body 26; the connecting kit 28 also includes a sleeve 281 and a main spring bracket 282, the sleeve 281 is sleeved on the outer periphery of the connecting rod 27 and fixedly connected to the main spring bracket 282, and the main spring bracket 282 is fixedly connected to the inner wall of the valve body shell 1; the connecting rod 27 can slide along the channel inside the sleeve 281; the other end of the main spring 22 connected to the valve core 2 is fixed on the main spring bracket 282, and the main spring 22 is sleeved on the outer periphery of the sleeve 281 to prevent the sleeve 281 from blocking the extension and retraction of the main spring 22.

[0046] In addition, the shaft sleeve 281 and the main spring bracket 282 can be a separate structure or an integrated structure.

[0047] Preferably, the sealing end is a truncated cone structure, and the end away from the valve core 2 has a smaller diameter, so that it can fit tightly with the connection port 14, and the material pressure in the valve body shell 1 can make the seal tighter, and a sealing ring is also sleeved on the sealing section 261 to make the sealing stronger. Specifically, the diameter of the connecting section 262 is smaller than the diameter of the sealing section 261; therefore, when the valve core 2 is in a sealed state, the material pressure in the valve body shell 1 is applied to the sealing section 261, and the pressure applied by the material can make the seal of the valve core 2 tighter and limit the free movement of the valve core 2. The high pressure provided by the material can ensure the sealing of the valve core 2 when it is closed, so that there is no need for the transmission mechanism such as the pull rod 23 to provide force to the connecting end 11, reducing the risk of fatigue failure of the transmission components such as the pull rod 23; since the sealing section 261 is closest to the outside and has a smaller thickness, the exhaust hole 211 is provided on the sealing section 261 and penetrates the sealing section 261, so as to achieve pressure relief between the inside and outside of the valve body shell 1.

[0048] Preferably, the diameter of the exhaust hole 211 is 0.5-5 mm.

[0049] Specifically, when the aperture of the exhaust hole 211 is less than 0.5 mm, the strength of the valve needle 212 cannot be ensured, which may cause the valve needle 212 to break during movement, so an aperture greater than 0.5 mm is selected; when the aperture of the exhaust hole 211 is greater than 5 mm, the material pressure on the valve needle 212 will be large, and opening the valve needle 212 will require overcoming greater resistance. Selecting an aperture below 5 mm can reduce resistance and facilitate use by construction personnel, preventing damage to the device caused by excessive force. Preferably, a movable housing 5 movable along the length direction of the valve body housing 1 is sleeved on the outer periphery of the connection end 11, and second protrusions 51 are respectively provided in the direction away from the connection end 11 of the movable housing 5; a plurality of second through holes 52 are provided on the inner wall of the valve body housing 1 close to the connection end 11, and a trigger lock mechanism 53 is provided in one of the second through holes 52; the trigger lock mechanism 53 abuts against the second protrusion 51 to prevent the movable housing 5 from moving toward the connection end 11; claws 54 rotatably connected to the valve body housing 1 are provided in the remaining second through holes 52, and the movable housing 5 can abut and fix the claws 54;

[0050] One end of the movable housing 5 away from the connection end 11 is connected to a guide and limiting mechanism 6 to provide power for the movable housing 5 to move toward the connection end 11 .

[0051] like Figure 4 and Figure 5As shown, specifically, the movable housing 5 is sleeved on the outer periphery of the upper end of the valve body housing 1, and the lower end of the movable housing 5 is fixedly connected to two shift forks 61, and the lower end of the shift fork 61 is connected to a shift fork spring 63, which is sleeved on the shift fork column 62, and the shift fork column 62 is fixed on the outer side wall of the valve body housing 1. The lower end of the shift fork 61 is provided with a guide hole to cooperate with the shift fork column 62, so that the shift fork 61 can move along the direction of the shift fork column 62 (that is, the length direction of the valve body housing 1), and the shift fork spring 63 always provides an upward force; the shift forks 61 on both sides are connected by two pull rods 64; when the opposite end pipeline connector is not connected, the trigger lock mechanism 53 abuts against the second protrusion 51 of the movable housing 5 to prevent the movable housing 5 from moving to the upper end; after the material transmission is completed, the movable housing 5 is returned to the initial position by pulling the pull rod 64 downward, and the claw 54 is movable at this time, so that the sealing connection between the connecting end 11 and the opposite end pipeline connector can be released.

[0052] The trigger lock mechanism 53 includes two abutting first rotating members 531 and second rotating members 532. One side of the first rotating member 531 extends to the inside of the valve body shell 1, and the other side abuts one end of the second rotating member 532. The other end of the second rotating member 532 is connected to a spring fixed to the valve body shell 1. The spring always provides an outward force, so that one end of the second rotating member 532 abuts the second protrusion 51 to prevent the movable shell 5 from moving up. When the opposite end pipe connector is connected, the front end of the opposite end pipe connector will first touch the first rotating member 531 extending to the valve body. On one side of the inner part of the shell 1, the first rotating member 531 then touches one end of the second rotating member 532, the second rotating member 532 forms a lever, and the other end of the second rotating member 532 compresses the spring and moves in the direction close to the valve body shell 1. At this time, the movable shell 5 is not blocked from moving upward, and is pushed upward by the fork 61 to the connecting end 11 to stop; after the movable shell 5 stops, its inner wall abuts against the side of the claw 54 away from the valve body shell 1, so that the claw 54 rotates toward the inside of the valve body shell 1 to hold the pipe connector at the opposite end, thereby realizing automatic connection and sealing between the pipe connectors.

[0053] Preferably, the rotating mechanism 3 is a handle.

[0054] A limit column 7 is also provided on the outer wall of the valve body shell 1. The limit column 7 is located on the rotation path of the handle to block the rotation of the handle; the handle is connected to the connecting shaft 4 through a rotating shaft 31, the connecting shaft 4 is parallel to the limit column 7, and the rotating shaft 31 is perpendicular to the limit column 7; the handle can rotate around the rotating shaft 31 in the direction away from the limit column 7 to avoid the limit column 7; a limit spring 32 is provided on the outer periphery of the connecting shaft 4, and the handle is connected to the limit spring 32.

[0055] like Figure 5 and Figure 6As shown, the rotating mechanism 3 is a handle, and the handle is perpendicular to the length direction of the valve body shell 1 to be in the sealing state of the valve core 2. The handle is rotated downward by 90 degrees to be parallel to the length direction of the valve body shell 1 to be in the open and connected state of the valve core 2. The other end of the hand-held end of the handle is extended. When the handle is in the open state of the valve core 2, the extended end of the handle can just abut against the lower end of the movable shell 5 to ensure the sealing between the opposite end pipeline connector; a limit column 7 is provided on the rotation path of the handle, and the limit column 7 is provided on the same side of the valve body shell 1 as the handle. The height of the limit column 7 is slightly higher than the height of the handle to abut the handle to prevent the handle from rotating and rebounding due to the material pressure inside the valve body shell 1; the handle is connected to the end of the connecting shaft 4 through a rotating shaft 31 perpendicular to the handle and the connecting shaft 4. When the handle needs to be rotated, the handle can be rotated around the rotating shaft 31 in the direction away from the valve body shell 1, and then rotated downward around the rotating shaft to pass the limit column 7 to realize the function of opening or closing the valve core 2.

[0056] Furthermore, a limit spring 32 is sleeved on the connecting shaft 4, one end of the limit spring 32 is connected to the handle, and the other end is connected to the valve body shell 1, always providing a pulling force in the direction close to the valve body shell 1, so that the handle can remain close to the valve body shell 1 when not subject to other external forces, thereby ensuring the effectiveness of the limit column 7; when the handle needs to be turned, the pulling force of the limit spring 32 is overcome by manpower to achieve the handle rotation, and the handle can automatically bounce to a state close to the valve body shell 1 after releasing the handle.

[0057] In addition, the connecting shaft is also provided with gaskets, bolts, connecting sleeves and other components to ensure that the connecting shaft can be reasonably connected and extend the service life.

[0058] The working process of the utility model is as follows: when the pipeline connector is not connected to the opposite pipeline connector, the valve core 2 is in a closed state, and the handle is perpendicular to the length direction of the valve body shell 1; when the opposite pipeline connector is connected, the front end of the opposite pipeline connector moves to the connection port 14 and touches the first rotating member 531 first, and the first rotating member 531 rotates so that the second rotating member 532 does not abut against the second protrusion 51; the movable shell 5 moves toward the connection end 11 under the push of the fork spring 63 and the fork 61, and after the movement, the inner side wall of the movable shell 5 abuts against the outer side of the claw 54, so that the claw 54 rotates toward the inside of the valve body shell 1 and is fixed to hold the opposite pipeline connector tightly.

[0059] After confirming the connection sealing, pull the handle away from the valve body shell 1, and then turn the handle downward; when the handle is turned, the pull rod 64 first pulls the pull rod 23 to move downward along the strip through hole 25. During the movement of the pull rod 23, the drive cover 215 and the valve needle 212 are driven away from the exhaust hole 211, so that the inside of the valve body shell 1 is connected with the opposite end pipeline connector to release the pressure. At this time, only a small force is needed to complete the pressure relief in the valve body shell 1; the handle continues to turn downward, and after the pull rod body 231 and the protective cover 232 move to the lower end and abut against the valve core 2, the pull rod 23 pulls the valve core 2 downward to release the seal, so as to communicate with the opposite end pipeline connector through the connecting port 14 to transfer materials. When the handle is turned to be parallel to the length direction of the valve body shell 1, the handle moves to a position close to the valve body shell 1. At this time, the upper end of the handle abuts against the lower end of the movable shell 5, so that the movable shell 5 is not easy to loosen; the limit column 7 prevents the handle from rebounding and causing the valve core 2 to reseal.

[0060] After the material transfer is completed, the handle is pulled and rotated upward to return to its initial position; during the rotation of the handle, the main spring 22 pushes the drive cover 215 to move upward until it abuts against the valve core 2, and the valve needle 212 is also inserted into the exhaust hole 211 for sealing; after the drive cover 215 abuts against the valve core 2, the main spring 22 pushes the valve core 2 to move toward the connecting port 14 until it abuts against the connecting port 14, completing the sealing; during this process, the pipeline connector and the opposite pipeline connector always maintain a sealed connection state, and the valve core 2 slowly moves toward the connecting port 14, which can ensure that the material in the part between the opposite pipeline connector is slowly squeezed into the opposite shell or the valve body shell 1 of the device, greatly reducing the amount of material leakage.

[0061] After the valve core 2 returns to the sealing state, it is determined that the material transfer is completed, and the pull rod 64 can be pulled downward to move the movable shell 5 downward back to the initial position. The second rotating member 532 is pushed by the spring back to the position abutting the second protrusion 51; keep pulling the pull rod 64, withdraw the opposite end pipeline connector from the connection end 11, and then release the pull rod 64. At this time, the pipeline connector returns to the initial state.

[0062] In summary, the embodiment of the utility model provides a pipeline connector, which has a compact structure, close relationship between various components, and simple operation; by sealing the valve core 2 and the movable shell 5 in cooperation with the claws 54 and the opposite pipeline connector, the leakage of materials can be greatly reduced; before manually opening the valve core 2 to connect with the opposite pipeline connector, the pressure relief operation is performed through the pressure relief mechanism 21, thereby greatly reducing the resistance that needs to be overcome to open the valve core 2, reducing the design length of the handle and preventing accidents due to excessive force, and having high safety.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline connector, comprising a valve body shell of a hollow structure and a valve core arranged inside the valve body shell along the length direction of the valve body shell; one end of the valve body shell is a connecting end, and the other end is a fixed end; a first protrusion is arranged at one end of the inner wall of the valve body shell close to the connecting end, the first protrusion is arranged along the circumference of the inner wall of the valve body shell and encloses a connecting port, the connecting port is sealed and connected to the valve core, and the valve core can make a reciprocating motion along the length direction of the valve body shell, It is characterized in that The valve core is provided with a pressure relief mechanism, which includes an exhaust hole and a valve needle moving along the length direction of the valve core, the exhaust hole is a first through hole connecting the two ends of the valve core, and the valve needle is inserted into the exhaust hole and sealedly connected to the exhaust hole; A main spring is sleeved on the valve core, and the pipeline connector also includes a rotating mechanism, a pulling rod, a connecting shaft and a hook. The pulling rod is connected to the valve core, one end of the hook abuts against the pulling rod, and the other end is connected to the connecting shaft. The connecting shaft is connected to the rotating mechanism, and the rotating mechanism drives the connecting shaft to rotate, and drives the hook to rotate to push the pulling rod to move in a direction away from the connecting port.

2. The pipe connector according to claim 1, It is characterized in that The valve core is provided with a slide groove arranged along its length direction, and the pulling rod is arranged in the slide groove and can move along the slide groove; the pressure relief mechanism also includes a seal, a positioning column and a drive cover; the seal is arranged at the edge of the exhaust hole, and the valve needle is connected to the drive cover through the positioning column, and the drive cover is sleeved on the outer periphery of the valve core and connected to the pulling rod, and one end of the drive cover is connected to the main spring. When the pulling rod moves in the slide groove, it can drive the drive cover to move along the length direction of the valve body shell, and drive the valve needle to move along the length direction of the valve body shell to be pulled out from or inserted into the exhaust hole.

3. The pipe connector according to claim 2, It is characterized in that A strip through hole passing through the slide groove is provided on the valve core along an opening direction perpendicular to the slide groove; the pulling rod passes through the strip through hole and is fixedly connected to the driving covers on both sides of the valve core, and the strip through hole has a certain distance along the length direction of the slide groove, so that the pulling rod can move in the strip through hole; an avoidance groove corresponding to the slide groove is provided on the driving cover, and the pulling hook passes through the avoidance groove and abuts against the pulling rod in the slide groove.

4. The pipe connector according to claim 3, It is characterized in that The pulling rod includes a pulling rod body and a protective sleeve, wherein the pulling rod body is connected to the driving cover; the protective sleeve is sleeved on the part of the pulling rod body located in the sliding groove, and the width of the protective sleeve is greater than the width of the strip through hole, and the protective sleeve abuts against the pulling hook.

5. The pipe connector according to any one of claims 1 to 4, It is characterized in that The valve core includes a valve core body, a connecting rod and a connecting kit. The valve core body includes a sealing section and a connecting section connected to the sealing section. The sealing section is sealed and connected to the connecting port. The connecting section is connected to one end of the connecting rod. The other end of the connecting rod is connected to the connecting kit. The connecting kit is connected to the inner side wall of the valve body shell. The main spring is sleeved on the connecting rod. The exhaust hole is arranged on the sealing section and runs through both ends of the sealing section.

6. The pipe connector according to any one of claims 1 to 4, It is characterized in that The diameter of the exhaust hole is 0.5-5 mm.

7. The pipe connector according to any one of claims 1 to 4, It is characterized in that The outer periphery of the connecting end is sleeved with a movable housing that can move along the length direction of the valve body housing, and the movable housing is respectively provided with second protrusions in the direction away from the connecting end; a plurality of second through holes are provided on the inner wall of the valve body housing close to the connecting end, and a trigger lock mechanism is provided in one of the second through holes; the trigger lock mechanism abuts against the second protrusion to prevent the movable housing from moving toward the connecting end; the remaining second through holes are provided with claws that are rotatably connected to the valve body housing, and the movable housing can abut and fix the claws; One end of the movable housing away from the connecting end is connected with a guide and limiting mechanism to provide power for the movable housing to move toward the connecting end.

8. The pipe connector according to any one of claims 1 to 4, It is characterized in that The rotating mechanism is a handle.

9. The pipe connector according to claim 8, It is characterized in that A limit column is also provided on the outer wall of the valve body shell, and the limit column is located on the rotation path of the handle to block the rotation of the handle; the handle is connected to the connecting shaft through a rotating shaft, the connecting shaft is parallel to the limit column, and the rotating shaft is perpendicular to the limit column; the handle can rotate around the rotating shaft in a direction away from the limit column to avoid the limit column.

10. The pipe connector according to claim 9, It is characterized in that A limit spring is sleeved on the outer periphery of the connecting shaft, and the handle is connected to the limit spring.

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