A bidirectional check valve lock structure

Abstract

The application relates to the technical field of stop valves, in particular to a bidirectional stop valve locking structure which comprises a valve body structure, a limiting structure, a butt joint structure, a sealing structure, a first mounting structure and a second mounting structure. The butt joint structure is used for stably butt joining a male connecting pipe and a female connecting pipe, the limiting structure effectively prevents the female connecting pipe from being separated from the male connecting pipe due to accidental rotation or sliding of a female snap ring, so that the female connecting pipe can be reliably locked and loosening during use is prevented, the use safety of the stop valve is improved, the sealing structure is provided in multiple modes, fluid leakage is effectively prevented, and the sealing performance of the stop valve is improved, the first mounting structure facilitates dismounting of a female shell and the female connecting pipe, the second mounting structure facilitates dismounting of a male shell and the male connecting pipe, the installation and dismounting of each component of the valve body are more convenient, maintenance and replacement in the later period are facilitated, and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of gate valve technology, specifically a bidirectional gate valve lock structure. Background Technology

[0002] In the field of gate valve technology, bidirectional gate valves, as key components in fluid control systems, are widely used in petrochemical, municipal water supply, gas transmission, industrial pipelines and other scenarios. Their core function is to achieve bidirectional on / off control of fluid media and ensure the sealing reliability and structural stability of the connection parts.

[0003] However, traditional bidirectional gate valves often use threaded connections or a single locking structure for the male and female connectors. Threaded connections are prone to loosening after long-term vibration or frequent operation, while single locking structures generally suffer from insufficient locking depth and weak limiting mechanisms. For example, if only a single claw engages with the groove, the claw can easily slip out of the groove under axial tension or radial torque, causing the male and female connectors to separate, leading to fluid leakage or even safety accidents. The valve body components of traditional bidirectional gate valves are mostly fixed by welding or interference fit. When vulnerable parts such as the internal valve core and sealing ring need to be replaced, it often requires complete disassembly or even damage to the valve body structure, resulting in cumbersome, time-consuming, and costly maintenance procedures. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a bidirectional shut-off valve lock structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a bidirectional shut-off valve lock structure, including a valve body structure, a docking structure disposed on the valve body structure, and a limiting structure disposed on the valve body structure;

[0006] The valve body structure includes a male connector housing and a male connector connecting pipe installed inside the male connector housing. A female connector connecting pipe is inserted into the male connector connecting pipe, and the female connector connecting pipe is installed inside the female connector housing.

[0007] The docking structure includes a female head retaining ring and an arc-shaped groove. The female head retaining ring is rotatably connected to the female head connecting pipe. The female head retaining ring has four arc-shaped grooves arranged in a circumferential array. The end of the arc-shaped grooves has a tail groove. The male head connecting pipe has four retaining posts fixedly connected in a circumferential array. The retaining posts are slidably connected to the arc-shaped grooves and the tail grooves.

[0008] The limiting structure includes a rotating shaft and a limiting strip. Four rotating shafts are rotatably connected in a circumferential array on the male head shell. A limiting strip is fixedly connected to the rotating shaft. Four limiting grooves are provided in a circumferential array on the female head retaining ring. The limiting strip engages with the limiting grooves. A torsion spring is sleeved on the outside of the rotating shaft. The two ends of the torsion spring are fixedly connected to the male head shell and the rotating shaft, respectively.

[0009] Specifically, the male connector tube has a male inner sleeve that slides inside, and the end of the male inner sleeve abuts against the end of the female connector tube. A first valve seat is fixedly connected inside the male connector tube, and a valve stem is fixedly connected to the first valve seat. A male valve core is fixedly connected to the end of the valve stem. A first spring is fixedly connected between the male inner sleeve and the first valve seat. The female connector tube has a second valve seat that slides inside, and a female valve core is fixedly connected to the second valve seat. A second spring is fixedly connected between the female outer shell and the second valve seat.

[0010] Specifically, the cross-sections of the male valve core and the female valve core are both isosceles trapezoidal structures, and the first valve seat and the second valve seat are both hollowed out.

[0011] Specifically, the female head retaining ring has multiple sets of protrusions arranged in a circumferential array, and the multiple protrusions in each set are arranged in a linear array. The female head retaining ring is slidably connected to a slip ring, and the slip ring has multiple retaining grooves inside.

[0012] Specifically, the valve body structure has an internal sealing structure, which includes a first sealing ring and a second sealing ring. The first sealing ring is installed on the male inner sleeve and is slidably connected to the male connecting pipe to form a sealing fit. The second sealing ring is installed on the female connecting pipe and is slidably connected to the male connecting pipe to form a sealing fit.

[0013] Specifically, the male valve core is equipped with a third sealing ring, which can be slidably connected to the male inner sleeve to form a sealing fit; the female valve core is equipped with a fourth sealing ring, which can be slidably connected to the female connecting pipe to form a sealing fit.

[0014] Specifically, a fifth sealing ring is installed on the male connector tube, and the fifth sealing ring is slidably connected to the male connector shell to form a sealing fit. A sixth sealing ring is installed on the female connector tube, and the sixth sealing ring is slidably connected to the female connector shell to form a sealing fit.

[0015] Specifically, the valve body structure is provided with a first mounting structure, which includes elastic buckles. Four elastic buckles are fixedly connected in a circumferential array on the female head shell, and four locking blocks are fixedly connected in a circumferential array on the female head connecting pipe. The elastic buckles abut against the locking blocks. A retaining ring is slidably connected on the female head shell, and the retaining ring abuts against the lower inclined surface of the elastic buckles. Two buckles are slidably connected on the female head shell, and the buckles are fixedly connected to the retaining ring. Two fixing sleeves are fixedly connected on the female head shell, and a sliding column is fixedly connected on the buckle. The sliding column is slidably connected to the fixing sleeve, and a third spring is fixedly connected between the sliding column and the fixing sleeve.

[0016] Specifically, the valve body structure is provided with a second mounting structure, which includes a first mounting groove and a second mounting groove. The male connector shell is provided with four first mounting grooves in a circumferential array. The tail of the first mounting groove is provided with a second mounting groove. The included angle between the first mounting groove and the second mounting groove is a right angle. Four rollers are fixedly connected to the male connector connecting pipe. The rollers are slidably connected to the first mounting groove and the second mounting groove. Four L-shaped baffles are slidably connected in a circumferential array on the male connector shell.

[0017] Specifically, a threaded ring is fixedly connected to the male head shell, a threaded sleeve is threadedly connected to the threaded ring, a swivel ring is rotatably connected to the end of the threaded sleeve, the end of the swivel ring has a U-shaped cross-section, and the end of the stop bar is rotatably connected to the swivel ring.

[0018] The beneficial effects of this invention are:

[0019] (1) The bidirectional shut-off valve locking structure of the present invention has a docking structure and a limiting structure on the valve body structure. The docking structure enables the male connector and the female connector to be stably docked and reliably locked, preventing loosening during use and improving the safety of the shut-off valve. The limiting structure effectively prevents the female connector from accidentally rotating or sliding, which could cause the connection between the male connector and the female connector to fall off, thus improving the stability of use after docking.

[0020] (2) The bidirectional shut-off valve lock structure described in this invention has multiple sealing structures that seal from multiple key parts, effectively preventing fluid leakage, improving the sealing performance of the shut-off valve, and meeting the application scenarios with high sealing requirements.

[0021] (3) The bidirectional shut-off valve lock structure of the present invention has a first installation structure that facilitates the disassembly of the female head shell and the female head connecting pipe, and a second installation structure that facilitates the disassembly of the male head shell and the male head connecting pipe, making the installation and disassembly of the valve body components more convenient, facilitating later maintenance and replacement, and reducing maintenance costs. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a bidirectional shut-off valve lock structure provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the male valve core and the female valve core of the present invention;

[0025] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.

[0026] Figure 4 This is a schematic diagram of the connection structure between the male connector housing and the male connector connecting tube of the present invention;

[0027] Figure 5 for Figure 4 The diagram shown is an enlarged view of the structure of section B.

[0028] Figure 6 This is a schematic diagram of the connection structure between the female head shell and the female head connecting tube of the present invention;

[0029] Figure 7 for Figure 6 The diagram shown is an enlarged view of the C-section structure.

[0030] Figure 8 This is a schematic diagram of the connection structure between the tail groove and the locking post of the present invention;

[0031] Figure 9 for Figure 8 The diagram shown is an enlarged view of the structure of part D.

[0032] Figure 10 This is a schematic diagram of the connection structure between the male inner sleeve and the female connecting tube of the present invention;

[0033] Figure 11 for Figure 10 The diagram shows an enlarged view of the E-section structure.

[0034] In the diagram: 1. Valve body structure; 101. Male connector housing; 102. Male connector connecting pipe; 103. Male connector inner sleeve; 104. Female connector housing; 105. Female connector connecting pipe; 106. First valve seat; 107. Valve stem; 108. Male valve core; 109. First spring; 110. Second valve seat; 111. Female valve core; 112. Second spring; 2. Limiting structure; 201. Rotating shaft; 202. Limiting strip; 203. Limiting groove; 204. Torsion spring; 3. Connecting structure; 301. Female connector retaining ring; 302. Arc groove; 303. Tail groove; 304. Retaining post; 305. Slip ring; 306. 307. Slot; 4. Protrusion; 401. Sealing structure; 402. First sealing ring; 403. Second sealing ring; 404. Third sealing ring; 405. Fourth sealing ring; 406. Fifth sealing ring; 407. Sixth sealing ring; 5. First mounting structure; 501. Elastic buckle; 502. Buckle block; 503. Abutment ring; 504. Buckle plate; 505. Sliding column; 506. Fixing sleeve; 507. Third spring; 6. Second mounting structure; 601. First mounting groove; 602. Second mounting groove; 603. Roller; 604. Stop bar; 605. Threaded ring; 606. Threaded sleeve; 607. Rotary ring. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the bidirectional shut-off valve lock structure of the present invention includes a valve body structure 1, a docking structure 3 disposed on the valve body structure 1, and a limiting structure 2 disposed on the valve body structure 1.

[0037] The valve body structure 1 includes a male head housing 101 and a male head connecting pipe 102 installed inside the male head housing 101. A female head connecting pipe 105 is inserted into the male head connecting pipe 102, and the female head connecting pipe 105 is installed inside the female head housing 104.

[0038] The docking structure 3 includes a female head retaining ring 301 and an arc-shaped groove 302. The female head retaining ring 301 is rotatably connected to the female head connecting pipe 105. The female head retaining ring 301 has four arc-shaped grooves 302 arranged in a circumferential array. The tail of the arc-shaped grooves 302 has a tail groove 303. The male head connecting pipe 102 has four retaining posts 304 fixedly connected in a circumferential array. The retaining posts 304 are slidably connected to the arc-shaped grooves 302 and the tail grooves 303.

[0039] The limiting structure 2 includes a rotating shaft 201 and limiting strips 202. Four rotating shafts 201 are rotatably connected in a circumferential array on the male connector housing 101. Limiting strips 202 are fixedly connected to each rotating shaft 201. Four limiting grooves 203 are provided in a circumferential array on the female connector retaining ring 301. The limiting strips 202 engage with the limiting grooves 203. A torsion spring 204 is sleeved on the outside of the rotating shaft 201. Both ends of the torsion spring 204 are fixedly connected to the male connector housing 101 and the rotating shaft 201, respectively. Rotating the two limiting strips 202 on the male connector housing 101 causes the torsion spring 204 to store force, allowing the male connector connecting tube 102 and the female connector connecting tube 105 to align. The retaining post 304 on the male connector connecting tube 102 is aligned with the arc-shaped groove 302 on the female connector retaining ring 301 and inserted. The retaining post 304 partially slides within the arc-shaped groove 302. When in motion, the female head retaining ring 301 rotates, and the retaining post 304 slides along the arc-shaped groove 302 and eventually enters the tail groove 303, and finally gets stuck at the end of the tail groove 303, completing the initial docking of the male and female heads. After the initial docking is completed, the limiting strip 202 is released. Under the action of the torsion spring 204, the limiting strip 202 will get stuck in the corresponding limiting groove 203 on the female head retaining ring 301, limiting the female head retaining ring 301 and preventing it from rotating accidentally. At the same time, the retaining post 304 and the tail groove 303 work together to prevent the female head retaining ring 301 from sliding relative to the male head connecting pipe 102, avoiding the male and female heads from falling off due to the retaining post 304 accidentally sliding out of the tail groove 303. At the same time, the sliding ring 305 can be slidable so that the retaining groove 306 on the sliding ring 305 cooperates with the protrusion 307 on the female head retaining ring 301, further enhancing the stability of the docking.

[0040] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, a male inner sleeve 103 is slidably connected inside the male connector 102. The end of the male inner sleeve 103 abuts against the end of the female connector 105. A first valve seat 106 is fixedly connected inside the male connector 102. A valve stem 107 is fixedly connected to the first valve seat 106. A male valve core 108 is fixedly connected to the end of the valve stem 107. A first spring 109 is fixedly connected between the male inner sleeve 103 and the first valve seat 106. A second valve seat 110 is slidably connected inside the female connector 105. A female valve core 111 is fixedly connected to the valve seat 110, and a second spring 112 is fixedly connected between the female valve housing 104 and the second valve seat 110; the cross-sections of the ends of the male valve core 108 and the female valve core 111 are both isosceles trapezoidal structures, and the first valve seat 106 and the second valve seat 110 are both hollowed out; the female valve retaining ring 301 has multiple sets of protrusions 307 arranged in a circumferential array, and the multiple protrusions 307 in each set are arranged in a linear array; a slip ring 305 is slidably connected to the female valve retaining ring 301, and the slip ring 305 has multiple retaining grooves 306 inside;

[0041] The valve body structure 1 has an internal sealing structure 4, which includes a first sealing ring 401 and a second sealing ring 402. The first sealing ring 401 is installed on the male inner sleeve 103, and the first sealing ring 401 is slidably connected to the male connecting pipe 102 to form a sealing fit. The second sealing ring 402 is installed on the female connecting pipe 105, and the second sealing ring 402 is slidably connected to the male connecting pipe 102 to form a sealing fit. A third sealing ring 403 is installed on the male valve core 108. The third sealing ring 403 can be slidably connected to the male inner sleeve 103 to form a sealing fit; the female valve core 111 is equipped with a fourth sealing ring 404, which can be slidably connected to the female connecting pipe 105 to form a sealing fit; the male connecting pipe 102 is equipped with a fifth sealing ring 405, which can be slidably connected to the male outer shell 101 to form a sealing fit; the female connecting pipe 105 is equipped with a sixth sealing ring 406. 6. The male connector 102 and female connector 105 are slidably connected and form a sealed fit. When the male connector 102 and female connector 105 are connected, the female connector 105 will push the male inner sleeve 103 to slide inside the male connector 102, compressing the first spring 109. At this time, the male valve core 108 is separated from the male inner sleeve 103, and the inside of the male connector 102 is connected. At the same time, the male inner sleeve 103 will push the second valve seat 110 to slide inside the female connector 105, compressing the second spring 112, so that the female valve core 111 and... When the female connector 105 is separated, the internal structure of the female connector 105 is open, and the entire shut-off valve is in the open state. When shut-off is required, the male connector 102 is separated from the female connector 105. Under the action of the first spring 109 and the second spring 112, the male inner sleeve 103 and the second valve seat 110 are reset. The male valve core 108 and the male inner sleeve 103 are sealed together by the third sealing ring 403, and the female valve core 111 and the female connector 105 are sealed together by the fourth sealing ring 404, thus realizing the shut-off function.

[0042] Specifically, such as Figure 1 , Figure 3 , Figure 5 and Figure 11As shown, the valve body structure 1 is provided with a first mounting structure 5, which includes elastic buckles 501. Four elastic buckles 501 are fixedly connected in a circumferential array on the female head shell 104, and four locking blocks 502 are fixedly connected in a circumferential array on the female head connecting pipe 105. The elastic buckles 501 abut against the locking blocks 502. A retaining ring 503 is slidably connected on the female head shell 104, and the retaining ring 503 abuts against the lower inclined surface of the elastic buckles 501. Two buckle plates 504 are slidably connected on the female head shell 104, and the buckle plates 504 are fixedly connected to the retaining ring 503. Two fixing sleeves 506 are fixedly connected on the female head shell 104. A sliding column 505 is fixedly connected on the buckle plate 504, and the sliding column 505 is slidably connected to the fixing sleeve 506. A third spring 507 is fixedly connected between the sliding column 505 and the fixing sleeve 506.

[0043] The valve body structure 1 is provided with a second mounting structure 6, which includes a first mounting groove 601 and a second mounting groove 602. The male connector housing 101 has four first mounting grooves 601 arranged in a circumferential array, and a second mounting groove 602 is provided at the tail of each first mounting groove 601. The included angle between the first mounting groove 601 and the second mounting groove 602 is a right angle. Four rollers 603 are fixedly connected to the male connector connecting pipe 102, and the rollers 603 are slidably connected to the first mounting grooves 601 and the second mounting grooves 602. Four L-shaped baffles 604 are slidably connected in a circumferential array on the male connector housing 101. A threaded ring 605 is fixedly connected to the male connector housing 101, and a threaded sleeve 606 is threadedly connected to the threaded ring 605. A rotating ring 607 is rotatably connected to the end of the threaded sleeve 606, and the end of the rotating ring 607 has a U-shaped cross-section. The end of each baffle 604 is rotatably connected to the rotating ring 607. If it is necessary to install or disassemble the components of valve body structure 1, for the female connector 105 and the female housing 104, pull the buckle plate 504. The buckle plate 504 drives the sliding column 505 to slide within the fixed sleeve 506, compressing the third spring 507. At the same time, the buckle plate 504 drives the abutment ring 503 to press the elastic buckle block 501, causing the elastic buckle block 501 to disengage from the locking block 502, thus enabling disassembly. During installation, simply insert the female connector 105 into the female housing 104, and the elastic buckle block... After 501 passes over the locking block 502, it abuts against the locking block 502. For the male connector 102 and the male housing 101, rotate the threaded sleeve 606 to drive the rotating ring 607 to move, so that the stop bar 604 slides out of the limiting position on the roller 603. Then rotate the male connector 102 or the male housing 101 to slide the roller 603 from the second mounting groove 602 into the first mounting groove 601. Then pull out the male connector 102 to complete the disassembly. The installation is done in reverse.

[0044] In use, the invention first rotates the two limiting strips 202 on the male connector housing 101, storing the torsion spring 204. Then, the male connector connecting tube 102 and the female connector connecting tube 105 are connected. The locking pin 304 on the male connector connecting tube 102 is aligned with the arc-shaped groove 302 on the female connector retaining ring 301 and inserted. As the locking pin 304 slides in the arc-shaped groove 302, the female connector retaining ring 301 rotates, and the locking pin 304 slides along the arc-shaped groove 302 and finally enters the tail groove 303, ultimately locking into the end of the tail groove 303, completing the initial connection between the male and female connectors. After the initial connection is completed, the limiting strips are released. Under the action of the torsion spring 204, the limiting strip 202 will be inserted into the corresponding limiting groove 203 on the female head retaining ring 301 to limit the female head retaining ring 301 and prevent it from rotating accidentally. At the same time, in conjunction with the retaining post 304 and the tail groove 303, the female head retaining ring 301 will not slide relative to the male head connecting pipe 102, and the retaining post 304 will not fall off the male and female heads due to accidental slippage out of the tail groove 303. At the same time, the sliding ring 305 can be slidable so that the groove 306 on the sliding ring 305 cooperates with the protrusion 307 on the female head retaining ring 301 to further enhance the stability of the connection.

[0045] Then, when the male connector 102 mates with the female connector 105, the female connector 105 pushes the male inner sleeve 103 to slide within the male connector 102, compressing the first spring 109. At this time, the male valve core 108 separates from the male inner sleeve 103, and the male connector 102 becomes internally connected. Simultaneously, the male inner sleeve 103 pushes the second valve seat 110 to slide within the female connector 105, compressing the second spring 112, causing the female valve core 111 to separate from the female connector 105. When the female connector 105 is open, the entire shut-off valve is in the open state. When shutting off is required, the male connector 102 is separated from the female connector 105. Under the action of the first spring 109 and the second spring 112, the male inner sleeve 103 and the second valve seat 110 are reset. The male valve core 108 and the male inner sleeve 103 are sealed together by the third sealing ring 403, and the female valve core 111 and the female connector 105 are sealed together by the fourth sealing ring 404, thus realizing the shut-off function.

[0046] Finally, if it is necessary to install or disassemble the components of valve body structure 1, for the female connector 105 and the female housing 104, pull the buckle plate 504. The buckle plate 504 drives the sliding column 505 to slide within the fixed sleeve 506, compressing the third spring 507. At the same time, the buckle plate 504 drives the abutment ring 503 to press the elastic buckle block 501, causing the elastic buckle block 501 to disengage from the locking block 502, thus enabling disassembly. During installation, simply insert the female connector 105 into the female housing 104, and the elastic buckle block... After 501 passes over the locking block 502, it abuts against the locking block 502. For the male connector 102 and the male housing 101, rotate the threaded sleeve 606 to drive the rotating ring 607 to move, so that the stop bar 604 slides out of the limiting position on the roller 603. Then rotate the male connector 102 or the male housing 101 to slide the roller 603 from the second mounting groove 602 into the first mounting groove 601. Then pull out the male connector 102 to complete the disassembly. The installation is done in reverse.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bidirectional shut-off valve lock structure, characterized in that, It includes a valve body structure (1), a docking structure (3) provided on the valve body structure (1), and a limiting structure (2) provided on the valve body structure (1). The valve body structure (1) includes a male head housing (101) and a male head connecting pipe (102) installed inside the male head housing (101). A female head connecting pipe (105) is inserted into the male head connecting pipe (102), and the female head connecting pipe (105) is installed inside the female head housing (104). The docking structure (3) includes a female head retaining ring (301) and an arc groove (302). The female head connecting pipe (105) is rotatably connected to the female head retaining ring (301). The female head retaining ring (301) is provided with four arc grooves (302) in a circular array. The tail of the arc groove (302) is provided with a tail groove (303). The male head connecting pipe (102) is fixedly connected with four retaining posts (304) in a circular array. The retaining posts (304) are slidably connected to the arc groove (302) and the tail groove (303). The limiting structure (2) includes a rotating shaft (201) and a limiting strip (202). Four rotating shafts (201) are rotatably connected in a circumferential array on the male head shell (101). The limiting strip (202) is fixedly connected to the rotating shaft (201). Four limiting grooves (203) are provided in a circumferential array on the female head retaining ring (301). The limiting strip (202) engages with the limiting groove (203). A torsion spring (204) is sleeved on the outside of the rotating shaft (201). The two ends of the torsion spring (204) are fixedly connected to the male head shell (101) and the rotating shaft (201) respectively. The valve body structure (1) is provided with a first mounting structure (5), which includes an elastic buckle (501). Four elastic buckles (501) are fixedly connected in a circumferential array on the female head shell (104), and four locking blocks (502) are fixedly connected in a circumferential array on the female head connecting pipe (105). The elastic buckle (501) abuts against the locking block (502). A retaining ring (503) is slidably connected on the female head shell (104). The retaining ring (503) abuts against the elastic buckle. The lower inclined surface of the block (501) abuts against the female head shell (104), and two buckle plates (504) are slidably connected on the female head shell (104). The buckle plates (504) are fixedly connected to the abutment ring (503). Two fixing sleeves (506) are fixedly connected on the female head shell (104). A sliding post (505) is fixedly connected on the buckle plate (504). The sliding post (505) is slidably connected to the fixing sleeve (506). A third spring (507) is fixedly connected between the sliding post (505) and the fixing sleeve (506). The valve body structure (1) is provided with a second mounting structure (6), the second mounting structure (6) includes a first mounting groove (601) and a second mounting groove (602), the male connector housing (101) is provided with four first mounting grooves (601) arranged in a circumferential array, the tail of the first mounting groove (601) is provided with a second mounting groove (602), the included angle between the first mounting groove (601) and the second mounting groove (602) is a right angle, and four rollers (603) are fixedly connected to the male connector connecting pipe (102). The male head housing (101) is slidably connected to the first mounting groove (601) and the second mounting groove (602). Four L-shaped baffles (604) are slidably connected in a circular array on the male head housing (101). A threaded ring (605) is fixedly connected to the male head housing (101). A threaded sleeve (606) is threadedly connected to the threaded ring (605). A swivel ring (607) is rotatably connected to the end of the threaded sleeve (606). The end of the swivel ring (607) has a U-shaped cross-section. The end of the baffle (604) is rotatably connected to the swivel ring (607).

2. The bidirectional shut-off valve lock structure according to claim 1, characterized in that: The male connector (102) is slidably connected to a male inner sleeve (103), the end of the male inner sleeve (103) abuts against the end of the female connector (105), the male connector (102) is fixedly connected to a first valve seat (106), a valve stem (107) is fixedly connected to the first valve seat (106), a male valve core (108) is fixedly connected to the end of the valve stem (107), a first spring (109) is fixedly connected between the male inner sleeve (103) and the first valve seat (106), the female connector (105) is slidably connected to a second valve seat (110), a female valve core (111) is fixedly connected to the second valve seat (110), and a second spring (112) is fixedly connected between the female outer shell (104) and the second valve seat (110).

3. The bidirectional shut-off valve lock structure according to claim 2, characterized in that: The cross-sections of the male valve core (108) and the female valve core (111) are both isosceles trapezoidal structures, and the first valve seat (106) and the second valve seat (110) are both hollowed out.

4. The bidirectional shut-off valve lock structure according to claim 1, characterized in that: The female head retaining ring (301) has multiple sets of protrusions (307) arranged in a circumferential array. The multiple protrusions (307) in each set are arranged in a linear array. A slip ring (305) is slidably connected to the female head retaining ring (301). The slip ring (305) has multiple slots (306) inside.

5. The bidirectional shut-off valve lock structure according to claim 2, characterized in that: The valve body structure (1) is provided with a sealing structure (4) inside. The sealing structure (4) includes a first sealing ring (401) and a second sealing ring (402). The first sealing ring (401) is installed on the male inner sleeve (103). The first sealing ring (401) is slidably connected to the male connecting pipe (102) and forms a sealing fit. The second sealing ring (402) is installed on the female connecting pipe (105). The second sealing ring (402) is slidably connected to the male connecting pipe (102) and forms a sealing fit.

6. The bidirectional shut-off valve lock structure according to claim 2, characterized in that: The male valve core (108) is equipped with a third sealing ring (403), which can be slidably connected with the male inner sleeve (103) to form a sealing fit. The female valve core (111) is equipped with a fourth sealing ring (404), which can be slidably connected with the female connecting pipe (105) to form a sealing fit.

7. The bidirectional shut-off valve lock structure according to claim 2, characterized in that: The male connector (102) is equipped with a fifth sealing ring (405), which is slidably connected to the male outer shell (101) and forms a sealing fit. The female connector (105) is equipped with a sixth sealing ring (406), which is slidably connected to the female outer shell (104) and forms a sealing fit.

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