An inflatable sealed gate valve

Abstract

The invention relates to a switch valve and discloses an inflatable sealed plug valve, comprising: a shell, one side of which is provided with a channel, a side wall of the channel is provided with a connecting port connected to the inside of the shell; a valve core, which is located in the shell, the outer side of the valve core is connected to a sealing air bag, and the valve core is provided with a connecting flow channel connected to the sealing air bag; a driving member, which is connected to one side of the shell, the driving member is driven to connect with an output rod, the output rod extends into the shell and is connected to the valve core, one side of the driving member is provided with an air inlet hole, and the output rod is provided with an air inlet flow channel, the driving member drives the output rod to approach the channel and makes the valve core pass through the connecting port to close the channel, the sealing air bag abuts against the inner side of the channel, and the air inlet hole and the air inlet flow channel are connected to each other; or the driving member drives the output rod away from the channel and makes the valve core open the channel, and the air inlet hole and the air inlet flow channel are staggered. The present invention improves the sealing performance when closing the channel and reduces the noise generated during use, and is more practical.

Description

Technical Field

[0001] The invention relates to a valve, in particular to an inflatable sealing gate valve. Background Art

[0002] The gate valve, also known as the gate valve, is a common shut-off valve, which is mainly used to open and close the medium in the pipeline system. A channel is set in the gate valve facing the pipeline. The gate valve drives the internal gate close to or away from the channel, thereby realizing the shut-off or circulation of the medium in the pipeline.

[0003] In order to improve the sealing of the gate in the channel, a sealing ring is currently provided on the inner side of the channel. When the gate closes the channel, the sealing ring is squeezed by the edge of the gate to strengthen the sealing. However, in actual applications, it is often the case that the sealing ring is not squeezed into place locally, or the sealing ring is locally contaminated by dust particles, resulting in problems such as inadequate sealing and poor sealing effect. Therefore, a gate valve with better sealing effect is urgently needed. Summary of the invention

[0004] The object of the present invention is to provide an inflatable sealed gate valve to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the present invention to solve its technical problem is:

[0006] 20. The vent valve according to claim 19, wherein the vent valve is provided with a valve core, the valve core having a sealing airbag connected to the vent valve core, and the vent valve core having a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core. The vent valve core has a sealing airbag connected to the vent valve core.

[0007] The technical solution has at least the following beneficial effects: when in use, the shell is installed into an external pipeline, and the channel provided on the shell is used for material to pass through. The channel is closed by controlling the valve core to intercept the pipeline, or the channel is opened by controlling the valve core to conduct the pipeline. Specifically, when the valve core needs to be controlled to be closed, the driving member drives the output rod to approach the channel, and the output rod drives the valve core connected thereto to enter the channel from the connecting port, and the channel is blocked and closed by the valve core. At this time, the sealing airbag on the outer side of the valve core abuts against the inner side of the channel, and the air inlet hole, the air inlet flow channel and the connecting flow channel are connected to each other. The air inlet hole is supplied by an external air source, and the sealing airbag can be pressurized to expand the sealing airbag and further adhere to the inner side of the channel. The gap between the valve core and the inner side of the channel is effectively eliminated, and the sealing performance when the channel is closed is improved. When the valve core needs to be controlled to open, the sealing airbag is first deflated from the air inlet to shrink the sealing airbag, and then the driving member drives the output rod away from the channel, and the output rod drives the valve core connected thereto to withdraw from the channel, thereby opening the channel. At this time, due to the activity of the output rod, the air inlet and the inlet flow channel are staggered with each other, and the contracted sealing airbag can reduce the friction with the inner side of the channel, which is beneficial to prolonging the service life of the sealing airbag and reducing the noise during use. In this way, a sealing airbag is arranged on the valve core, and the sealing airbag can be inflated and deflated to improve the sealing performance when the channel is closed, and the noise generated during use is reduced, which is more practical.

[0008] As a further improvement of the above technical solution, the valve core includes an intermediate plate, a support plate and a sealing plate connected to both sides of the intermediate plate, the outer sides of the support plate and the sealing plate are respectively connected with sealing airbags, the connecting flow channel is formed in the intermediate plate, the two ends of the connecting flow channel extend to the support plate and the sealing plate respectively, and the support plate and the sealing plate are respectively against the positions of the outer shell on both sides of the connecting port. When in use, the sealing plate is facing the side of the external pipeline incoming material, and the intermediate plate is between the sealing plate and the support plate, which is used to provide connection support for the two, so that the distance between the sealing plate and the support plate on the side away from each other is adapted to the distance on both sides of the connecting port. The support plate is located at the side of the channel away from the incoming material, which can be used to provide support for the sealing plate and form a second seal. When in use, the sealing plate and the support plate are against the positions of the outer shell on both sides of the connecting port, further improving the sealing performance when the channel is closed.

[0009] As a further improvement of the above technical solution, the sealing plate includes a first semicircular plate body and a second semicircular plate body connected in sequence along a direction close to the output rod, the outer diameter of the first semicircular plate body is smaller than the outer diameter of the second semicircular plate body, and sealing concave angles are formed between the two corners of the first semicircular plate body and the two corners of the second semicircular plate body respectively, the intermediate plate is connected to one side of the first semicircular plate body and the second semicircular plate body, and an arc-shaped protrusion is formed on the side of the second semicircular plate body away from the intermediate plate, and the arc-shaped protrusion extends along the outer edge of the second semicircular plate body, the sealing airbag is connected to the inner side of the arc-shaped protrusion, the sealing concave angle and the outer edge of the first semicircular plate body, and a sealing step is arranged in the outer shell at a position opposite to the arc-shaped protrusion, and when the valve core passes through the connecting port to close the channel, the arc-shaped protrusion is matched and connected to the sealing step. The first semicircular plate body and the second semicircular plate body with different outer diameters are connected to form a main structure for shielding the channel. The first semicircular plate body with a smaller outer diameter is located on the side away from the output rod. When the channel is closed, the first semicircular plate body directly presses the sealing airbag connected to its outer edge toward the inner side of the channel, so that the sealing airbag can extend toward the gap between the first semicircular half body and the inner side of the channel when inflated, thereby improving the sealing performance of this connection position. The second semicircular plate body is located on the side close to the output rod. When the channel is closed, a sealing step is provided at the inner side of the shell close to the output rod. The arc-shaped protrusion on the second semicircular plate body and the sealing concave angle at the connection position of the second semicircular plate body and the first semicircular plate body can press the sealing airbag into the sealing step. In this way, a curved sealing structure is formed between the second semicircular plate body and the inner side of the channel, thereby improving the sealing performance. When the sealing airbag is inflated, the sealing airbag can extend in this curved sealing structure to better fill the gap and improve the sealing performance of this connection position.

[0010] As a further improvement of the above technical solution, the structure of the support plate and the structure of the sealing plate are symmetrically arranged with the middle plate as the reference plane. Similarly, the support plate also has two plates with different radii, so that the sealing airbag can better fill the gap between the support plate and the inner side of the channel when inflating, thereby improving the sealing performance of the support plate to the channel.

[0011] As a further improvement of the above technical solution, a sealing groove is provided at the position of the inner side of the channel facing the first semicircular plate body, and an avoidance groove is provided at the position of the inner side of the channel facing the support plate. When the valve core passes through the connecting port to close the channel, the outer edge of the first semicircular plate body is embedded in the sealing groove, and the support plate is inserted into the avoidance groove. When the channel is closed, the outer edge of the first semicircular plate body is inserted into the sealing groove, so that the first semicircular plate body and the inner side of the channel form a curved sealing structure, further improving the sealing performance of the connection with the inner side of the channel, and the support plate is also driven into the avoidance groove. The avoidance groove can be used to avoid the movement of the support plate, and the support plate can be pressed against the side wall of the avoidance groove, further improving the support stability of the support plate.

[0012] As a further improvement of the above technical solution, the top width of the sealing groove gradually increases in the direction close to the notch of the sealing groove. A guide space is formed at the top of the sealing groove and gradually narrows toward the bottom of the sealing groove. When the first semicircular plate is inserted into the sealing groove, the guide space can be used to guide the movement of the first semicircular plate, so that the outer edge position of the first semicircular plate can be accurately and tightly embedded in the sealing groove.

[0013] As a further improvement of the above technical solution, the driving member includes a cylinder, a piston and a guide shaft, one side of the cylinder is connected to the shell, the piston is connected to the cylinder, the piston separates the inside of the cylinder in a direction away from the shell to form two cavities, the guide shaft is connected to the cylinder, the guide shaft passes through the piston, and one end of the output rod passes through the cylinder and is connected to the piston. The piston separates the inside of the cylinder to form two cavities. When the channel needs to be closed, liquid or gas is added to the cavity away from the channel to increase the pressure, and the cavity close to the channel flows out of the liquid or gas, so that the piston moves in the direction close to the channel, thereby driving the output rod. At this time, the guide shaft can guide and limit the movement of the piston, improve the stability of the piston during the movement, so that the torsion or deviation of the piston during the movement can be effectively limited, thereby improving the stability of the output rod driving the valve core to move, and by improving the parallelism between the valve core and the channel, the sealing of the valve core when the channel is closed can be further improved.

[0014] As a further improvement of the above technical solution, the shape of the piston is rectangular, and the inner shape of the cylinder body is adapted to the shape of the piston. By using the rectangular shape of the piston and the rectangular shape of the inner side of the cylinder body to cooperate with each other, the torsion or displacement of the piston during the movement can be further limited, thereby further improving the sealing performance of the valve core when closing the channel.

[0015] As a further improvement of the above technical solution, the housing includes a first shell and a second shell that are detachably connected, the middle part of the first shell is surrounded to form the channel, the interior of the first shell and the interior of the second shell are interconnected, the driving member is connected to a side of the second shell away from the first shell, and the output rod extends into the second shell. The first shell and the second shell are detachable structures, and the valve core and other structures can be removed from between the first shell and the second shell, which is convenient for assembly and production as well as subsequent use and maintenance, and improves the convenience of use.

[0016] As a further improvement of the above technical solution, a locking sleeve is rotatably connected to the second shell, a locking bolt is threadedly connected to the locking sleeve, a clamping seat extending toward the locking sleeve is connected to the first shell, a clamping slot is arranged on the side of the clamping seat away from the first shell, the clamping slot extends in a direction away from the locking sleeve, and the locking sleeve can be rotated toward or away from the clamping seat to allow the locking bolt to enter and exit the clamping slot. When the first shell and the second shell need to be connected to each other, the locking bolt is rotated toward the second shell so that the locking bolt on the locking sleeve passes through the clamping slot and is rotated into the clamping seat. At this time, the head of the locking bolt and the locking sleeve are respectively located at the two ends of the clamping slot. The locking bolt is tightened so that the head of the locking bolt is pressed against the clamping seat, thereby locking the first shell and the second shell to each other. When the first shell and the second shell need to be separated, the locking bolt is loosened, and then the locking bolt is rotated out of the clamping slot from the clamping seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0018] Figure 1 It is an overall front view of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the AA cross-section structure.

[0020] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part B.

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle sealing airbag after inflation.

[0022] Figure 5 yes Figure 2A partial enlarged schematic diagram of part C.

[0023] Figure 6 It is a three-dimensional view of the sealing plate of the present invention.

[0024] Figure 7 It is an overall stereogram of the present invention.

[0025] In the accompanying drawings: 1-housing, 11-channel, 12-sealing groove, 13-avoidance groove, 14-first shell, 15-second shell, 16-locking sleeve, 17-locking bolt, 18-clamping seat, 19-clamping slot, 2-valve core, 21-sealing airbag, 22-connecting flow channel, 23-middle plate, 24-support plate, 25-sealing plate, 251-first semicircular plate body, 252-second semicircular plate body, 253-sealing concave angle, 254-arc-shaped protrusion, 255-sealing step, 3-driving member, 31-output rod, 32-inlet hole, 33-inlet flow channel, 34-cylinder body, 35-piston, 36-guide shaft. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0027] Reference Figures 1 to 5, an inflatable sealed gate valve, comprising: a shell 1, one side of which is provided with a channel 11, the side wall of the channel 11 is provided with a communication port connected to the inside of the shell 1; a valve core 2, which is located in the shell 1, the outer side of the valve core 2 is connected to a sealing air bag 21, and the valve core 2 is provided with a connecting flow channel 22 connected to the sealing air bag 21; a driving member 3, which is connected to one side of the shell 1, the driving member 3 is connected to an output rod 31, the output rod 31 extends into the shell 1 and is connected to the valve core 2, and one side of the driving member 3 is provided with an air inlet 32 , an intake channel 33 is provided in the output rod 31, and the intake channel 33 is communicated with the connecting channel 22, wherein: the driving member 3 drives the output rod 31 to approach the channel 11 and causes the valve core 2 to pass through the connecting port to close the channel 11, the sealing airbag 21 abuts against the inner side of the channel 11, and the intake hole 32 is communicated with the intake channel 33; or the driving member 3 drives the output rod 31 away from the channel 11 and causes the valve core 2 to open the channel 11, and the intake hole 32 and the intake channel 33 are staggered with each other.

[0028] When using this inflatable sealed gate valve, the shell 1 is installed into an external pipeline. The channel 11 provided on the shell 1 is used for material to pass through. The channel 11 is closed by controlling the valve core 2 to cut off the pipeline, or the valve core 2 is controlled to open the channel 11 to conduct the pipeline. Specifically, when the valve core 2 needs to be controlled to be closed, the driving member 3 drives the output rod 31 to approach the channel 11, and the output rod 31 drives the valve core 2 connected thereto to enter the channel 11 from the connecting port, and the channel 11 is blocked and closed by the valve core 2. At this time, the sealing airbag 21 on the outer side of the valve core 2 is against the inner side of the channel 11, and the air inlet hole 32, the air inlet flow channel 33 and the connecting flow channel 22 are connected to each other. The air inlet hole 32 is supplied by an external air source, and the sealing airbag 21 can be pressurized to expand the sealing airbag 21 and further adhere to the inner side of the channel 11, effectively eliminating The gap between the valve core 2 and the inner side of the channel 11 improves the sealing performance when the channel 11 is closed. When the valve core 2 needs to be controlled to open, the sealing airbag 21 is first deflated from the air inlet 32 ​​to shrink the sealing airbag 21. Then the driving member 3 drives the output rod 31 away from the channel 11, and the output rod 31 drives the valve core 2 connected thereto to withdraw from the channel 11, thereby opening the channel 11. At this time, due to the activity of the output rod 31, the air inlet 32 ​​and the inlet flow channel 33 are staggered with each other, and the shrunk sealing airbag 21 can reduce the friction with the inner side of the channel 11, which is beneficial to prolonging the service life of the sealing airbag 21 and reducing the noise during use. In this way, a sealing airbag 21 is arranged on the valve core 2. By inflating and deflating the sealing airbag 21, the sealing performance when closing the channel 11 can be improved, and the noise generated during use can be reduced, which is more practical.

[0029] The valve core 2 can be a whole plate, and in the present embodiment, the valve core 2 includes an intermediate plate 23, a support plate 24 and a sealing plate 25 connected to both sides of the intermediate plate 23, the outer sides of the support plate 24 and the sealing plate 25 are respectively connected with sealing air bags 21, the connecting channel 22 is formed in the intermediate plate 23, and the two ends of the connecting channel 22 extend to the support plate 24 and the sealing plate 25 respectively, and the support plate 24 and the sealing plate 25 are respectively against the positions of the outer shell 1 on both sides of the connecting port. When in use, the sealing plate 25 is facing the side of the external pipeline material, and the middle plate 23 is between the sealing plate 25 and the support plate 24, which is used to provide connection support for the two, so that the distance between the sealing plate 25 and the support plate 24 on the side away from each other is adapted to the distance on both sides of the connecting port, and the support plate 24 is located at a position of the channel 11 away from the material side, which can be used to provide support for the sealing plate 25 and form a second seal. When in use, the sealing plate 25 and the support plate 24 are against the positions of the outer shell 1 on both sides of the connecting port, further improving the sealing performance when the channel 11 is closed.

[0030] If the sealing airbag 21 is directly mounted around the outside of the valve core 2, when the valve core 2 closes the channel 11, the sealing airbag 21 located away from the output rod 31 can be directly pressed against the inside of the channel 11, and the sealing airbag 21 close to the output rod 31 is pressed against the position of the housing 1 at the inner edge of the communication port. In order to further enhance the sealing effect, in this embodiment, Figure 6As shown, the sealing plate 25 includes a first semicircular plate body 251 and a second semicircular plate body 252 connected in sequence along the direction close to the output rod 31, the outer diameter of the first semicircular plate body 251 is smaller than the outer diameter of the second semicircular plate body 252, and sealing concave corners 253 are formed between the two corners of the first semicircular plate body 251 and the two corners of the second semicircular plate body 252, respectively, and the intermediate plate 23 is connected to one side of the first semicircular plate body 251 and the second semicircular plate body 252, and the second semicircular plate body 252 is away from An arc-shaped protrusion 254 is formed on one side of the middle plate 23, and the arc-shaped protrusion 254 extends along the outer edge of the second semicircular plate body 252. The sealing airbag 21 is connected to the inner side of the arc-shaped protrusion 254, the sealing concave corner 253 and the outer edge of the first semicircular plate body 251. A sealing step 255 is provided in the outer shell 1 at a position opposite to the arc-shaped protrusion 254. When the valve core 2 passes through the connecting port to close the channel 11, the arc-shaped protrusion 254 is connected in cooperation with the sealing step 255. The first semicircular plate 251 and the second semicircular plate 252 of different outer diameters are connected to form a main structure for shielding the channel 11. The first semicircular plate 251 with a smaller outer diameter is located on the side away from the output rod 31. When the channel 11 is closed, the first semicircular plate 251 directly presses the sealing airbag 21 connected to its outer edge toward the inside of the channel 11, so that the sealing airbag 21 can extend toward the gap between the first semicircular half body and the inside of the channel 11 when inflated, thereby improving the sealing performance of this connection position. The second semicircular plate 252 is located on the side close to the output rod 31. When the channel 11 is closed, the first semicircular plate 251 directly presses the sealing airbag 21 connected to its outer edge toward the inside of the channel 11, thereby improving the sealing performance of this connection position. When the housing 1 is closed, since a sealing step 255 is provided at the inner side of the housing 1 near the output rod 31, the arc-shaped protrusion 254 protruding from the second semicircular plate 252 and the sealing concave corner 253 at the connection position between the second semicircular plate 252 and the first semicircular plate 251 can press the sealing airbag 21 into the sealing step 255, so that a curved sealing structure is formed between the second semicircular plate 252 and the inner side of the channel 11, thereby improving the sealing performance. When the sealing airbag 21 is inflated, the sealing airbag 21 can extend in the curved sealing structure to better fill the gap and improve the sealing performance of this connection position.

[0031] Similarly, the structure of the support plate 24 and the structure of the sealing plate 25 are symmetrically arranged with the middle plate 23 as the reference plane. Similarly, the support plate 24 also has two plates with different radii, so that the sealing airbag 21 can better fill the gap between the support plate 24 and the inner side of the channel 11 when inflating, thereby improving the sealing performance of the support plate 24 to the channel 11.

[0032] Furthermore, a sealing groove 12 is provided at a position on the inner side of the channel 11 facing the first semicircular plate body 251, and an avoidance groove 13 is provided at a position on the inner side of the channel 11 facing the support plate 24. When the valve core 2 passes through the connecting port to close the channel 11, the outer edge of the first semicircular plate body 251 is embedded in the sealing groove 12, and the support plate 24 is inserted into the avoidance groove 13. When the channel 11 is closed, the outer edge of the first semicircular plate body 251 is inserted into the sealing groove 12, so that the first semicircular plate body 251 and the inner side of the channel 11 form a curved sealing structure, further improving the sealing performance of the connection with the inner side of the channel 11, and the support plate 24 is also driven into the avoidance groove 13, and the movement of the support plate 24 can be avoided by using the avoidance groove 13, and the support plate 24 can be pressed against the side wall of the avoidance groove 13, further improving the support stability of the support plate 24.

[0033] Since the first semicircular plate 251 needs to be embedded in the sealing groove 12 for tight fit, in order to ensure that the first semicircular plate 251 and the sealing groove 12 can be accurately aligned, in this embodiment, the top width of the sealing groove 12 gradually increases in the direction close to the notch of the sealing groove 12. A guide space is formed at the top position of the sealing groove 12, which gradually narrows toward the bottom of the sealing groove 12. When the first semicircular plate 251 is inserted into the sealing groove 12, the guide space can be used to guide the movement of the first semicircular plate 251, so that the outer edge position of the first semicircular plate 251 can be accurately and tightly embedded in the sealing groove 12.

[0034] The driving member 3 is a driving source for driving the output rod 31 to reciprocate. For example, a cylinder, a hydraulic cylinder or an electric screw can be used. In order to improve the stability of the activity of the driving member 3, in this embodiment, the driving member 3 includes a cylinder body 34, a piston 35 and a guide shaft 36. One side of the cylinder body 34 is connected to the outer shell 1, and the piston 35 is connected to the cylinder body 34. The piston 35 divides the inside of the cylinder body 34 into two cavities in a direction away from the outer shell 1. The guide shaft 36 is connected to the cylinder body 34, and the guide shaft 36 passes through the piston 35. One end of the output rod 31 passes through the cylinder body 34 and is connected to the piston 35. The piston 35 separates the interior of the cylinder 34 into two cavities. When the channel 11 needs to be closed, liquid or gas is added to the cavity away from the channel 11 to increase the pressure, while liquid or gas flows out of the cavity close to the channel 11, so that the piston 35 moves toward the channel 11, thereby driving the output rod 31. At this time, the guide shaft 36 can guide and limit the movement of the piston 35, thereby improving the stability of the piston 35 during movement. This can effectively limit the torsion or deviation of the piston 35 during the movement, thereby improving the stability of the output rod 31 driving the valve core 2 to move, and by improving the parallelism between the valve core 2 and the channel 11, the sealing of the valve core 2 when the channel 11 is closed is further improved.

[0035] Furthermore, the shape of the piston 35 is rectangular, and the inner shape of the cylinder body 34 matches the shape of the piston 35. By using the rectangular shape of the piston 35 and the rectangular shape of the inner side of the cylinder body 34 to cooperate with each other, the torsion or displacement of the piston 35 during the activity can be further limited, thereby further improving the sealing performance of the valve core 2 when closing the channel 11.

[0036] The housing 1 includes a first housing 14 and a second housing 15 that are detachably connected. The middle of the first housing 14 is surrounded to form the channel 11. The interior of the first housing 14 and the interior of the second housing 15 are interconnected. The driving member 3 is connected to a side of the second housing 15 away from the first housing 14, and the output rod 31 extends into the second housing 15. The first housing 14 and the second housing 15 are detachable structures, and the valve core 2 and other structures can be removed from between the first housing 14 and the second housing 15, which facilitates assembly production and subsequent use and maintenance, and improves the convenience of use.

[0037] There are many structural forms of detachable connection between the first shell 14 and the second shell 15, such as snap connection, threaded connection, etc. In this embodiment, Figure 7As shown, a locking sleeve 16 is rotatably connected to the second shell 15, and a locking bolt 17 is threadedly connected to the locking sleeve 16. A clamping seat 18 extending toward the locking sleeve 16 is connected to the first shell 14, and a clamping slot 19 is provided on the side of the clamping seat 18 away from the first shell 14. The clamping slot 19 extends in a direction away from the locking sleeve 16. The locking sleeve 16 can be rotated in a direction close to or away from the clamping seat 18 to allow the locking bolt 17 to enter and exit the clamping slot 19. When the first shell 14 and the second shell 15 need to be connected to each other, the locking bolt 17 is rotated in the direction close to the second shell 15, so that the locking bolt 17 on the locking sleeve 16 passes through the clamping slot 19 and is rotated into the clamping seat 18. At this time, the head of the locking bolt 17 and the locking sleeve 16 are respectively located at the two ends of the clamping slot 19. The locking bolt 17 is tightened so that the head of the locking bolt 17 is pressed against the clamping seat 18, thereby locking the first shell 14 and the second shell 15 to each other. When the first shell 14 and the second shell 15 need to be separated, the locking bolt 17 is loosened, and then the locking bolt 17 is rotated out of the clamping slot 19 and the clamping seat 18.

[0038] In practical applications, a locking sleeve 16, a locking bolt 17 and a clamping seat 18 form a connection group, and connection groups can be respectively provided on both sides of the first shell 14 and the second shell 15. At this time, the two connection groups are directly used to lock and fix the two sides of the first shell 14 and the second shell 15.

[0039] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An inflatable sealed gate valve, characterized in that: include: A housing (1) having a channel (11) disposed on one side thereof, wherein a side wall of the channel (11) is provided with a communication port connected to the interior of the housing (1); A valve core (2) is located in the housing (1), the outer side of the valve core (2) is connected to a sealing airbag (21), and a connecting flow channel (22) connected to the sealing airbag (21) is provided in the valve core (2); A driving member (3) connected to one side of the housing (1); the driving member (3) is drivingly connected to an output rod (31); the output rod (31) extends into the housing (1) and is connected to the valve core (2); an air inlet hole (32) is provided on one side of the driving member (3); an air inlet passage (33) is provided in the output rod (31); the air inlet passage (33) is communicated with the connecting passage (22), wherein: the driving member (3) drives the output rod (31) to approach the channel (11) and causes the valve core (2) to pass through the connecting opening to close the channel (11); the sealing airbag (21) abuts against the inner side of the channel (11); the air inlet hole (32) is provided in the output rod (31); 2) is interconnected with the intake channel (33); or the driving member (3) drives the output rod (31) away from the channel (11) and causes the valve core (2) to open the channel (11), the intake hole (32) and the intake channel (33) are staggered, the valve core (2) comprises an intermediate plate (23), a support plate (24) and a sealing plate (25) connected to both sides of the intermediate plate (23), the outer sides of the support plate (24) and the sealing plate (25) are respectively connected to sealing air bags (21), the connecting channel (22) is formed in the intermediate plate (23), and the two ends of the connecting channel (22) extend to the support plate (24) and the sealing plate (25), respectively. The sealing plate (25), the support plate (24) and the sealing plate (25) are respectively abutted against positions on both sides of the housing (1) located at the communicating port, the sealing plate (25) comprising a first semicircular plate body (251) and a second semicircular plate body (252) which are sequentially connected in a direction close to the output rod (31), the outer diameter of the first semicircular plate body (251) being smaller than the outer diameter of the second semicircular plate body (252), two corners of the first semicircular plate body (251) and two corners of the second semicircular plate body (252) respectively forming sealing concave corners (253), the intermediate plate (23) being connected to the first semicircular plate body (251) and the second semicircular plate body (252) The second semicircular plate (252) is provided with a curved protrusion (254) on one side of the second semicircular plate (252) away from the middle plate (23), and the curved protrusion (254) extends along the outer edge of the second semicircular plate (252). The sealing airbag (21) is connected to the inner side of the curved protrusion (254), the sealing concave corner (253) and the outer edge of the first semicircular plate (251). A sealing step (255) is provided in the housing (1) at a position opposite to the curved protrusion (254). When the valve core (2) passes through the connecting port to close the channel (11), the curved protrusion (254) is connected in cooperation with the sealing step (255).

2. The inflatable sealed gate valve according to claim 1, characterized in that: The structure of the support plate (24) and the structure of the sealing plate (25) are arranged symmetrically with the middle plate (23) as a reference plane.

3. The inflatable sealed gate valve according to claim 1, characterized in that: A sealing groove (12) is provided at a position on the inner side of the channel (11) directly opposite to the first semicircular plate body (251), and an avoidance groove (13) is provided at a position on the inner side of the channel (11) directly opposite to the support plate (24); when the valve core (2) passes through the connecting port to close the channel (11), the outer edge of the first semicircular plate body (251) is embedded in the sealing groove (12), and the support plate (24) is inserted into the avoidance groove (13).

4. The inflatable sealed gate valve according to claim 3, characterized in that: The top width of the sealing groove (12) gradually increases in a direction approaching the notch of the sealing groove (12).

5. The inflatable sealed gate valve according to claim 1, characterized in that: The driving member (3) comprises a cylinder body (34), a piston (35) and a guide shaft (36); one side of the cylinder body (34) is connected to the housing (1); the piston (35) is connected to the inside of the cylinder body (34); the piston (35) separates the inside of the cylinder body (34) in a direction away from the housing (1) to form two cavities; the guide shaft (36) is connected to the inside of the cylinder body (34); the guide shaft (36) passes through the piston (35); and one end of the output rod (31) passes through the cylinder body (34) and is connected to the piston (35).

6. The inflatable sealed gate valve according to claim 5, characterized in that: The shape of the piston (35) is rectangular, and the inner shape of the cylinder body (34) is adapted to the shape of the piston (35).

7. The inflatable sealed gate valve according to claim 1, characterized in that: The housing (1) comprises a first shell (14) and a second shell (15) which are detachably connected. The middle part of the first shell (14) is surrounded to form the channel (11). The interior of the first shell (14) and the interior of the second shell (15) are connected to each other. The driving member (3) is connected to a side of the second shell (15) away from the first shell (14), and the output rod (31) extends into the second shell (15).

8. The inflatable sealed gate valve according to claim 7, characterized in that: A locking sleeve (16) is rotatably connected to the second housing (15), a locking bolt (17) is threadedly connected to the locking sleeve (16), a clamping seat (18) extending toward the locking sleeve (16) is connected to the first housing (14), a clamping slot (19) is provided on a side of the clamping seat (18) away from the first housing (14), the clamping slot (19) extends in a direction away from the locking sleeve (16), the locking sleeve (16) can be rotated in a direction close to or away from the clamping seat (18) and the locking bolt (17) can enter and exit the clamping slot (19).

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