A leak-proof valve

Abstract

The present invention belongs to the technical field of leak-proof valves, and specifically is a leak-proof valve, comprising a valve body, a shell fixedly installed in the valve body, a sealing component arranged in the shell, the sealing component comprising a transmission shaft, the transmission shaft rotatably installed in the shell, a turntable fixedly mounted on the transmission shaft, two groups of receiving frames symmetrically plugged into the turntable, two groups of jacks symmetrically opened on the outer ring of the shell, the receiving frames movably plugged into the jacks, a blocking block fixedly connected to one end of the receiving frame, a sealing rubber gasket fixedly installed at one end of the blocking block, a worm gear fixedly connected to the upper end of the transmission shaft, and the switch states of the two groups of water outlet ends can be independently controlled by driving the turntable to rotate in different directions, the sealing rubber gasket has good elasticity, and the sealing rubber gasket is arranged to face away from the water impact direction so as to be not easily worn. Even if the sealing rubber gasket is worn to a certain extent, it will not affect the sealing performance of the water outlet end, thereby avoiding the occurrence of valve leakage due to wear.

Description

Technical Field

[0001] The invention belongs to the technical field of leak-proof valves, in particular to a leak-proof valve. Background Art

[0002] The three-way valve is a common fluid control device. It is designed for use in pipeline systems to change or divert the flow direction of the fluid. The main structure of the three-way valve consists of a valve body, three ports and a ball valve core.

[0003] The patent with announcement number CN216344093U discloses a three-way spherical valve, including a valve body, three groups of connecting pipes are distributed on the outside of the valve body, a valve core is rotatably installed in the valve body, a water-passing groove is opened inside the valve core, an installation groove is opened on the upper outer wall of the valve body, a rotating rod is fixedly installed on the surface of the valve core, and a flow rate regulating device is arranged on the rotating rod; the scheme rotates the threaded block, the threaded block pushes the sliding disk to move downward, the sliding disk changes the position of the baffle through the threaded rod, the fixed sleeve and the fixed rod, and then the water flow rate in the connecting pipe is regulated and controlled by the scale bar opened on the outer wall of the rotating rod, and secondly, by rotating a single threaded rod, the threaded rod controls the position of a single baffle through the fixed sleeve and the fixed rod, and the water flow rate in a single connecting pipe of the three-way valve is regulated and controlled by the scale bar opened on the outer wall of the threaded rod.

[0004] In the above scheme, the flow direction of water inside the valve body is changed by rotating the valve core in the valve body. However, when the valve core is rotated, friction is generated between the outer ring of the valve core and the inner wall of the valve body. Long-term operation in this way causes wear between the outer ring of the valve core and the inner wall of the valve body due to friction, which not only causes the valve to leak, but also reduces the service life of the entire valve. For this reason, the present invention provides a leak-proof valve. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: a leak-proof valve described in the present invention comprises a valve body, a shell is fixedly installed in the valve body, a plugging assembly is arranged in the shell, the plugging assembly comprises a transmission shaft, the transmission shaft is rotatably installed in the shell, a turntable fixedly sleeved on the transmission shaft, two groups of receiving frames symmetrically plugged into the turntable, two groups of jacks are symmetrically provided on the outer ring of the shell, the receiving frame is movably plugged into the jacks, a blocking block fixedly connected to one end of the receiving frame, a sealing rubber pad is fixedly installed at one end of the blocking block, a worm wheel fixedly connected to the upper end of the transmission shaft, a worm engaged with the worm wheel, the worm gear is rotatably installed in the valve body, two groups of first guide grooves are symmetrically provided on the turntable, a pin shaft is arranged in the other end of the receiving frame, the pin shaft is located in the first guide groove, and the first guide groove is composed of an arc groove and an oblique groove;

[0007] By driving the turntable to rotate in different directions, the switch status of the two sets of water outlets can be controlled separately. The sealing gasket has good elasticity and is not easily worn when it is set against the water impact direction. Even if the sealing gasket is worn to a certain extent, it will not affect the sealing of the water outlet, thereby avoiding the occurrence of valve leakage due to wear.

[0008] Preferably, the valve body comprises a valve body, a shell body is fixedly installed in the valve body, two groups of rotary joints, the two groups of rotary joints are rotatably installed at both ends of the valve body, two groups of sealing rings fixedly mounted on the rotary joints, two groups of flanges, the two groups of flanges are fixedly connected to the two ends of the valve body, and the flanges are directly opposite to the other rotary joints, six groups of scrapers are distributed at equal angles at one end of the rotary joint, and the scrapers are fitted with one end surface of the rotary joint, the upper end of the scrapers is fixedly installed in the valve body, six groups of avoidance grooves for engaging the scrapers are provided on one side of the sealing rubber gasket, a grille is fixedly installed in the rotary joint, a movable rod is fixedly connected to one end of the blocking block, one end of the movable rod is plugged into the inner ring of the grille, two groups of second guide grooves are provided in the inner ring of the grille, two groups of convex shafts are provided on one end of the movable rod, the two groups of convex shafts are respectively located in the two groups of second guide grooves, and the second guide grooves are composed of a spiral slide groove and a linear groove;

[0009] Because the scraper scrapes off the scale layer on one end surface of the rotary joint before the sealing rubber pad seals one end of the rotary joint, not only the scale layer is automatically processed, but also the sealing rubber pad is prevented from being worn, thereby increasing the service life of the sealing rubber pad.

[0010] Preferably, six groups of receiving grooves are provided at equal angles at both ends of the valve body, and a receiving mechanism is provided in the receiving groove, the receiving mechanism includes a movable bracket, one end of the movable bracket is fixedly connected to the scraper strip, the movable bracket is movably installed in the receiving groove, four groups of U-shaped spring strips are provided above the movable bracket, and a roller is rotatably installed in the movable bracket, two groups of guide grooves are provided on both sides of the movable bracket, the guide grooves are slidably connected to the slide rails, the slide rails are fixedly installed in the receiving grooves, six groups of push plates are provided at equal angles on the outer ring of the block, the push plates are located in the receiving grooves, and the push plates pass through the movable bracket, and an inclined surface for pushing the roller is provided on the push plates;

[0011] The scraper strip will move with the movable bracket, so that the sealing rubber pad is stored in the storage groove in advance before it touches one end of the rotary joint. In the case that no avoidance groove is provided on the sealing rubber pad, the scraper strip is relieved from obstructing the sealing rubber pad from sealing the rotary joint, thereby ensuring the service life and sealing performance of the sealing rubber pad.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. By driving the turntable to rotate in different directions, the switch status of the two sets of water outlets can be controlled separately. The sealing gasket has good elasticity, and the sealing gasket is not easy to wear when it is set against the water impact direction. Even if the sealing gasket is worn to a certain extent, it will not affect the sealing of the water outlet, thus avoiding the occurrence of valve leakage due to wear.

[0014] 2. When the sealing rubber gasket is blocking the water outlet end of the valve body, the block will drive the movable rod to slide along the inner circle of the grille, and at the same time, the two sets of cams on one end of the movable rod will slide along the two sets of spiral grooves respectively, so that the grille and the swivel joint will rotate. As the swivel joint rotates, the six sets of scrapers slide along one end face of the swivel joint, so that the scale layer on one end face of the swivel joint is scraped off by the scrapers. When the cam slides into the linear groove, the swivel joint stops rotating until the sealing rubber gasket is squeezed onto one end face of the swivel joint, and the six sets of scrapers are pressed into the six sets of avoidance grooves on one side of the sealing rubber gasket, thereby realizing the above-mentioned blocking of the water outlet end of the valve body. Before the sealing rubber gasket blocks one end of the swivel joint, the scraper scrapes off the scale layer on one end face of the swivel joint, which not only realizes the automatic processing of the scale layer, but also avoids the wear of the sealing rubber gasket, thereby increasing the service life of the sealing rubber gasket.

[0015] 3. When the blocking block drives the movable rod to slide along the inner circle of the grille, the six groups of push plates on the blocking block will also move together, and the push plates will slide along the corresponding inner cavity of the movable bracket. When the convex shaft on one end of the movable rod slides to the intersection of the linear groove and the spiral groove, the inclined surface on the push plate just contacts the roller in the movable bracket. As the convex shaft slides along the linear groove, the inclined surface will squeeze the roller, and the roller will roll along the inclined surface. At the same time, the roller drives the movable bracket to slide along the corresponding slide rail toward the inside of the storage groove, and the scraper strip will move with the movable bracket, so that the scraper strip is collected into the storage groove in advance before the sealing rubber gasket contacts one end of the rotary joint. In the case that no avoidance groove is provided on the sealing rubber gasket, the scraper strip is relieved from obstructing the sealing rubber gasket from sealing the rotary joint, thereby ensuring the service life and sealing of the sealing rubber gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic cross-sectional view of the structure of the present invention.

[0019] Figure 3 The present invention is a schematic diagram of a cross-section of a housing, a turntable, a receiving frame, a blocking block, and a sealing pad assembly.

[0020] Figure 4 The figure is a schematic diagram of the cross-section of the valve body, the rotating disk, the blocking block and the sealing rubber gasket assembly of the present invention.

[0021] Figure 5 It is a schematic diagram of the combination of the grille, movable rod and cam shaft of the present invention.

[0022] Figure 6 It is a schematic diagram of a cross-sectional view of a valve body, a cross-sectional view of a swivel joint, a scraper strip, a cross-sectional view of a grille, and a blocking block assembly of the present invention.

[0023] Figure 7 It is a schematic diagram of the storage mechanism, scraper strip, push plate and inclined surface combination of the present invention.

[0024] In the figure: 1, valve body; 2, housing; 201, jack; 3, plugging assembly; 301, transmission shaft; 302, turntable; 3021, first guide groove; 21, arc groove; 22, oblique groove; 303, receiving frame; 3031, pin shaft; 304, blocking block; 3041, movable rod; 3042, convex shaft; 3043, push plate; 3044, inclined surface; 305, sealing pad; 3051, avoidance groove; 306, worm wheel; 307, worm; 101, valve body; 1011, receiving groove; 1012, receiving mechanism; 102, rotary joint; 103, sealing ring; 104, flange; 105, scraper; 106, grille; 1061, second guide groove; 61, spiral slide groove; 62, linear groove; 121, movable bracket; 122, U-shaped spring bar; 123, roller; 124, guide groove; 125, slide rail. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] Embodiment 1: Figures 1 to 3 As shown, a leak-proof valve according to an embodiment of the present invention comprises a valve body 1, a housing 2 is fixedly installed in the valve body 1, a plugging assembly 3 is arranged in the housing 2, the plugging assembly 3 comprises a transmission shaft 301, the transmission shaft 301 is rotatably installed in the housing 2, a turntable 302 fixedly sleeved on the transmission shaft 301, two groups of receiving frames 303 symmetrically plugged into the turntable 302, two groups of jacks 201 are symmetrically opened on the outer ring of the housing 2, the receiving frames 303 are movably plugged into the jacks 201, and the receiving frames 303 are fixedly connected to the receiving frames 303. A blocking block 304 is provided at one end of the frame 303, a sealing rubber pad 305 is fixedly installed at one end of the blocking block 304, a worm wheel 306 is fixedly connected to the upper end of the transmission shaft 301, a worm 307 meshing with the worm wheel 306, and the worm 307 is rotatably installed in the valve body 1, two groups of first guide grooves 3021 are symmetrically provided on the turntable 302, a pin shaft 3031 is provided in the other end of the receiving frame 303, and the pin shaft 3031 is located in the first guide groove 3021, and the first guide groove 3021 is composed of an arc groove 21 and an oblique groove 22.

[0027] Specifically, the outer diameter of the blocking block 304 is much smaller than the smallest inner diameter of the valve body 1. The two groups of ports in the valve body 1 facing the two groups of blocking blocks 304 are water outlets, and the remaining group on the valve body 1 is a water inlet. In the initial state, the two water outlets of the valve body 1 are in an open state, and the pin shaft 3031 is located at the intersection of the arc groove 21 and the oblique groove 22. When it is necessary to block one group of water outlets, the worm 307 is rotated. As the worm 307 rotates, the worm wheel 306 drives the transmission shaft 301 to rotate together with the turntable 302. As the turntable 302 rotates, one group of pin shafts 3031 will slide along the oblique groove 22, and the other group of pin shafts 3031 will slide along the arc groove 21. Under the guidance of the oblique groove 22, one group of pin shafts 3031 will drive the corresponding receiving frame 303 to move along the jack 201 toward the water outlet, and the other group of pin shafts 3031 will move along the arc groove 21 around the transmission shaft 3 01 rotates, so that the other set of pin shafts 3031 will not drive the corresponding receiving frame 303 to move. The moving receiving frame 303 drives the corresponding blocking block 304 to move together with the sealing gasket 305 until the sealing gasket 305 is squeezed to the inner wall of the water outlet end, so that the water outlet end is blocked, and the water pouring in from the water inlet end can only be discharged through the other set of water outlet ends. On the contrary, when the other set of water outlet ends is blocked, the corresponding sealing gasket 305 will block the other set of water outlet ends, and one set of water outlet ends is in an open state. Compared with the prior art, by driving the turntable 302 to rotate in different directions, the switching states of the two sets of water outlet ends can be controlled separately. The sealing gasket 305 has good elasticity, and the sealing gasket 305 is set against the water impact direction and is not easy to wear. Even if the sealing gasket 305 is worn to a certain extent, it will not affect the sealing of the water outlet end, thereby avoiding the occurrence of valve leakage due to wear.

[0028] like Figure 4 and Figure 5As shown, the valve body 1 includes a valve body 101, a housing 2 fixedly installed in the valve body 101, two sets of rotary joints 102, the two sets of rotary joints 102 are rotatably installed at both ends of the valve body 101, two sets of sealing rings 103 fixedly sleeved on the rotary joints 102, two sets of flanges 104, the two sets of flanges 104 are fixedly connected to both ends of the valve body 101, and the flanges 104 are directly opposite to the other rotary joints 102, and six sets of scrapers 105 are distributed at equal angles at one end of the rotary joint 102, and the scrapers 105 are attached to one end surface of the rotary joint 102, and the upper ends of the scrapers 105 are fixedly installed on the valve body. 101, six groups of avoidance grooves 3051 for engaging the scraper strip 105 are provided on one side of the sealing gasket 305, a grille 106 is fixedly installed in the rotary joint 102, a movable rod 3041 is fixedly connected to one end of the block 304, one end of the movable rod 3041 is plugged into the inner circle of the grille 106, two groups of second guide grooves 1061 are provided in the inner circle of the grille 106, two groups of cams 3042 are provided on one end of the movable rod 3041, the two groups of cams 3042 are respectively located in the two groups of second guide grooves 1061, and the second guide groove 1061 is composed of a spiral groove 61 and a linear groove 62.

[0029] Specifically, the sealing ring 103 enhances the sealing performance between the rotary joint 102 and the valve body 101. The contact surface between the water outlet end of the valve body 1 and the sealing gasket 305 is subjected to water flow impact for a long time, and a hard scale layer will be generated on the contact surface. The surface of the scale layer is uneven. When the sealing gasket 305 blocks the water outlet end of the valve body 1, the sealing gasket 305 will be squeezed by the scale layer. The uneven scale layer will cause surface wear of the sealing gasket 305, accelerate the aging of the sealing gasket 305, and reduce the service life of the sealing gasket 305. Therefore, when the sealing gasket 305 blocks the water outlet end of the valve body 1, the block 304 will drive the movable rod 3041 to slide along the inner circle of the grille 106. At the same time, the two sets of convex shafts 3042 on one end of the movable rod 3041 slide along the two sets of spiral grooves 61 respectively, so that the grille 1 06 rotates together with the rotary joint 102. As the rotary joint 102 rotates, the six groups of scrapers 105 slide along one end surface of the rotary joint 102, so that the scale layer on the one end surface of the rotary joint 102 is scraped off by the scrapers 105. When the convex shaft 3042 slides into the linear groove 62, the rotary joint 102 stops rotating until the sealing gasket 305 is squeezed onto one end surface of the rotary joint 102, and the six groups of scrapers 105 are pressed into the six groups of avoidance grooves 3051 on one side of the sealing gasket 305, so as to achieve the above-mentioned blocking of the water outlet end of the valve body 1. Before the sealing gasket 305 blocks one end of the rotary joint 102, the scrapers 105 scrape off the scale layer on one end surface of the rotary joint 102, which not only realizes the automatic processing of the scale layer, but also avoids the sealing gasket 305 from being worn, thereby increasing the service life of the sealing gasket 305.

[0030] Embodiment 2: Figure 6 and Figure 7As shown, in contrast to Example 1, another embodiment of the present invention is as follows: six groups of receiving grooves 1011 are opened at equal angles at both ends of the valve body 1, and a receiving mechanism 1012 is arranged in the receiving groove 1011. The receiving mechanism 1012 includes a movable bracket 121, one end of the movable bracket 121 is fixedly connected to the scraper strip 105, and the movable bracket 121 is movably installed in the receiving groove 1011. Four groups of U-shaped spring strips 122 are arranged above the movable bracket 121, which are rotatably installed on the movable bracket. The roller 123 in the frame 121, two groups of guide grooves 124 are opened on both sides of the movable bracket 121, the guide grooves 124 are slidably connected to the slide rails 125, the slide rails 125 are fixedly installed in the storage groove 1011, and six groups of push plates 3043 are arranged at equal angles on the outer circle of the blocking block 304, the push plates 3043 are located in the storage groove 1011, and the push plates 3043 pass through the movable bracket 121, and the push plates 3043 are provided with inclined surfaces 3044 for pushing the roller 123.

[0031] Specifically, the scraper strip 105 is facing the direction of the water flow impact, so a scale layer will also be generated on the scraper strip 105. When the scraper strip 105 is pressed into the avoidance groove 3051, the scale layer will not only cause wear on the inner wall of the avoidance groove 3051, but also make the scraper strip 105 not fit tightly with the avoidance groove 3051, thereby reducing the service life and sealing performance of the sealing gasket 305. Therefore, during the process in which the above-mentioned block 304 drives the movable rod 3041 to slide along the inner circle of the grille 106, the six groups of push plates 3043 on the block 304 will also move together, and the push plates 3043 will slide along the corresponding inner cavity of the movable bracket 121. When the convex shaft 3042 on one end of the movable rod 3041 slides to the intersection of the linear groove 62 and the spiral groove 61, the inclined surface 3043 on the push plate 3043 44 just contacts the roller 123 in the movable bracket 121, and as the convex shaft 3042 slides along the linear groove 62, the inclined surface 3044 will squeeze the roller 123, and the roller 123 will roll along the inclined surface 3044, and at the same time, the roller 123 drives the movable bracket 121 to slide along the corresponding slide rail 125 toward the inside of the receiving groove 1011, and the scraper 105 will move with the movable bracket 121, so that the sealing gasket 305 is not in contact with one end of the rotary joint 102. Before the scraper 105 is collected into the receiving groove 1011, when the avoidance groove 3051 is not provided on the sealing gasket 305, the scraper 105 is relieved from blocking the sealing gasket 305 from the rotary joint 102, thereby ensuring the service life and sealing performance of the sealing gasket 305.

[0032] Working principle: When a group of water outlets needs to be blocked, the worm 307 is rotated. As the worm 307 rotates, the worm wheel 306 drives the transmission shaft 301 to rotate together with the turntable 302. As the turntable 302 rotates, a group of pins 3031 will slide along the oblique groove 22, while the other group of pins 3031 will slide along the arc groove 21. Under the guidance of the oblique groove 22, one group of pins 3031 will drive the corresponding receiving frame 303 to move along the socket 201 toward the water outlet, while the other group of pins 3031 will slide along the arc groove 21. The arc groove 21 rotates around the transmission shaft 301, so that the other group of pin shafts 3031 will not drive the corresponding receiving frame 303 to move, and the moving receiving frame 303 drives the corresponding blocking block 304 to move together with the sealing rubber pad 305, until the sealing rubber pad 305 is squeezed to the inner wall of the water outlet end, so that the water outlet end is blocked, and the water pouring in from the water inlet end can only be discharged through the other group of water outlet ends. On the contrary, when the other group of water outlet ends is blocked, the corresponding sealing rubber pad 305 will block the other group of water outlet ends, and one group of water outlet ends is in an open state;

[0033] When the sealing rubber pad 305 blocks the water outlet of the valve body 1, the blocking block 304 drives the movable rod 3041 to slide along the inner circle of the grille 106. At the same time, the two groups of convex shafts 3042 on one end of the movable rod 3041 slide along the two groups of spiral grooves 61 respectively, so that the grille 106 and the rotary joint 102 rotate. As the rotary joint 102 rotates, the six groups of scraping strips 105 slide along one end surface of the rotary joint 102, so that the scale layer on one end surface of the rotary joint 102 is scraped off by the scraping strips 105. When the convex shaft 3042 slides into the linear groove 62, the rotary joint 102 stops rotating until the sealing rubber pad 305 is squeezed onto one end surface of the rotary joint 102, and the six groups of scraping strips 105 are pressed into the six groups of avoidance grooves 3051 on one side of the sealing rubber pad 305, so as to achieve the above-mentioned blocking of the water outlet of the valve body 1.

[0034] When the block 304 drives the movable rod 3041 to slide along the inner circle of the grille 106, the six groups of push plates 3043 on the block 304 will also move together, and the push plates 3043 slide along the inner cavity of the corresponding movable bracket 121. When the convex shaft 3042 on one end of the movable rod 3041 slides to the intersection of the linear groove 62 and the spiral groove 61, the inclined surface 3044 on the push plate 3043 just contacts the roller 123 in the movable bracket 121. As the convex shaft 3042 slides along the linear groove 62, the inclined surface 3044 will squeeze the roller 123, and the roller 123 will roll along the inclined surface 3044. At the same time, the roller 123 drives the movable bracket 121 to slide along the corresponding slide rail 125 toward the inside of the storage groove 1011, and the scraper 105 will move with the movable bracket 121, so that the sealing pad 305 is stored in the storage groove 1011 in advance before it contacts one end of the rotary joint 102.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A leak-proof valve, comprising a valve body (1), characterized in that: A housing (2) is fixedly mounted inside the valve body (1), and a blocking component (3) is arranged inside the housing (2); The blocking component (3) comprises: A transmission shaft (301), the transmission shaft (301) being rotatably mounted in the housing (2); A rotating disk (302) fixedly mounted on the transmission shaft (301); Two groups of receiving frames (303) are symmetrically plugged into the rotating disk (302); two groups of plug holes (201) are symmetrically opened on the outer ring of the shell (2); and the receiving frames (303) are movably plugged into the plug holes (201); A blocking block (304) fixedly connected to one end of the receiving frame (303); A sealing rubber pad (305) is fixedly mounted on one end of the blocking block (304); A worm gear (306) fixedly connected to the upper end of the transmission shaft (301); a worm (307) meshing with the worm wheel (306), the worm (307) being rotatably mounted in the valve body (1); Two groups of first guide grooves (3021) are symmetrically provided on the rotating disk (302); a pin shaft (3031) is provided in the other end of the receiving frame (303); the pin shaft (3031) is located in the first guide groove (3021); the first guide groove (3021) is composed of an arc groove (21) and an oblique groove (22); Six groups of receiving grooves (1011) are provided at equal angles at both ends of the valve body (1), and receiving mechanisms (1012) are provided in the receiving grooves (1011). The receiving mechanisms (1012) include: A movable bracket (121), one end of the movable bracket (121) being fixedly connected to the scraper strip (105), and the movable bracket (121) being movably mounted in the storage groove (1011); Four groups of U-shaped elastic bars (122) are arranged above the movable bracket (121); A roller (123) is rotatably mounted in the movable bracket (121); two groups of guide grooves (124) are provided on both sides of the movable bracket (121); the guide grooves (124) are slidably connected to slide rails (125); the slide rails (125) are fixedly mounted in the storage groove (1011); six groups of push plates (3043) are arranged at equal angles on the outer ring of the blocking block (304); the push plates (3043) are located in the storage groove (1011), and the push plates (3043) pass through the movable bracket (121); and the push plates (3043) are provided with inclined surfaces (3044) for pushing the roller (123).

2. A leak-proof valve according to claim 1, characterized in that: The valve body (1) comprises: A valve body (101), wherein the housing (2) is fixedly mounted inside the valve body (101); Two sets of rotary joints (102), the two sets of rotary joints (102) being rotatably mounted at two ends of the valve body (101) respectively; Two sets of sealing rings (103) fixedly sleeved on the rotary joint (102); Two sets of flanges (104), the two sets of flanges (104) are fixedly connected to two ends of the valve body (101), and the flanges (104) are directly opposite to another rotary joint (102); Six groups of scraping strips (105) are distributed at equal angles on one end of the rotary joint (102), and the scraping strips (105) are in contact with one end surface of the rotary joint (102).

3. A leak-proof valve according to claim 2, characterized in that: The upper end of the scraper strip (105) is fixedly mounted in the valve body (101), and one side of the sealing rubber pad (305) is provided with six groups of avoidance grooves (3051) for engaging the scraper strip (105).

4. A leak-proof valve according to claim 3, characterized in that: A grille (106) is fixedly installed inside the rotary joint (102), one end of the blocking block (304) is fixedly connected to a movable rod (3041), and one end of the movable rod (3041) is plugged into the inner ring of the grille (106).

5. The leak-proof valve according to claim 4, characterized in that: Two groups of second guide grooves (1061) are provided in the inner circle of the grille (106), and two groups of convex shafts (3042) are provided on one end of the movable rod (3041). The two groups of convex shafts (3042) are respectively located in the two groups of second guide grooves (1061).

6. The leak-proof valve according to claim 5, characterized in that: The second guiding groove (1061) is composed of a spiral groove (61) and a linear groove (62).

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