High-pressure energy-saving universal gate valve with parallel valve flaps

Abstract

The invention discloses a high-pressure energy-saving universal gate valve with parallel valve flaps, and relates to the technical field of gate valves. The top of the opposite face of the arc sliding plate is a protruding cambered surface curved surface, the two ends of the bottom of the arc sliding plate are attached to the two ends of the top of the arc clamping base, and the cambered surface of the bottom of the arc sliding plate is flush with the cambered surface of the bottom of the arc plate. The bottom cambered surfaces of the arc-shaped sliding plates are flush with the bottom cambered surfaces of the arc-shaped plates, and the bottom cambered surfaces of the arc-shaped plates and the top cambered surfaces of the arc-shaped clamping seats are matched with a flowing path of the inner wall of the valve body, so that after the gate valve is opened, a flowing path similar to a straight pipe is formed in the gate valve, and when fluid flows through the gate valve, blocking to the fluid is reduced; vortex is prevented from occurring when fluid flows through the gate valve, and power loss needed by fluid conveying is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gate valves, in particular to a high-pressure energy-saving universal parallel-disc gate valve. BACKGROUND

[0002] The parallel-disc gate valve is an important type of gate valve, specifically referring to a valve with two sealing surfaces of the valve disc parallel to each other and parallel to the vertical center line of the pipeline, which often relies on wedge-shaped mechanical compensation or spring pre-tightening devices to ensure sealing effect, and is commonly used for on-off control of pipeline fluid, and is divided into two mainstream structures of single gate plate and double gate plate. The two sealing surfaces of the single gate plate remain parallel, and a soft valve seat is required to achieve sealing. The double gate plate structure often has a built-in spring or mechanical opening mechanism. When the valve is closed, the spring pre-tightening force or medium pressure can push the two gate plates to open to the two sides, so that they tightly fit the valve seat, thereby enhancing the sealing performance. For example, a gate valve with publication number CN113883294B includes a valve body, a valve cover, a valve stem, a first valve plate, a second valve plate, and a switching assembly. The first valve plate can be switched between multiple working positions by rotating the valve stem. When the first valve plate is in the first working position, the valve plate can block the fluid pipeline. Rotating the valve stem in the forward direction can move the valve plate upward to the second working position to connect the fluid pipeline. Continuing to rotate the valve stem in the forward direction can move the first valve plate upward to the third working position to connect the first valve plate with the switching assembly. When the first valve plate is in the third working position, the position of the first valve plate and the second valve plate can be switched by controlling the rotation of the switching assembly, so that the second valve plate is connected with the valve stem. The advantages of the present application lie in that the first valve plate and the second valve plate are provided, and when the first valve plate is worn and the gate valve leaks, the second valve plate pre-installed in the gate valve can replace the first valve plate, thereby prolonging the service life of the gate valve. However, when the fluid flows through the gate valve, the flow path inside the gate valve is tortuous, which hinders the flow of the fluid and causes vortex flow after the fluid is hindered, resulting in energy loss of the fluid after flowing through the gate valve. Meanwhile, the gate valve is prone to overflow leakage in a high-pressure flow environment. SUMMARY

[0003] To solve the above technical problems, the present application is implemented by the following technical scheme: a high-pressure energy-saving universal parallel-disc gate valve, comprising: A valve body, an inner clasp ring is fixedly installed on the top inner wall of the valve body, the bottom of the inner clasp ring is a conical surface with a gradually decreasing outer diameter from top to bottom, and a driving mechanism is installed on the top of the valve body; A valve seat mechanism and a valve core mechanism, the valve seat mechanism is installed inside the valve body, and the valve core mechanism is slidingly installed inside the valve body; The valve seat mechanism comprises an arc-shaped plate, which is fixedly installed on the inner wall of the valve body, and the center of the bottom of the arc-shaped plate is fixedly installed with an arc clamping seat, the arc surface of the bottom of the arc-shaped plate is matched with the arc surface of the top of the arc clamping seat and the inner wall of the valve body, the center of the top of the arc-shaped plate is provided with an arc through slot, and the inner wall of the arc-shaped plate is symmetrically provided with arc sliding grooves, the arc sliding grooves of the arc-shaped plate are slidably installed with arc sliding plates, the arc sliding grooves of the arc-shaped plate are clamped with rubber arc strips, the rubber arc strips are located between the arc sliding plates and the arc-shaped plate, the arc surface of the bottom of the arc sliding plate is provided with a groove, and the groove of the arc sliding plate is fixedly installed with an inner gasket strip, the inner gasket strip is made of elastic material, and the inner gasket strip cooperates with the rubber gasket strip to tightly adhere to the opposite surface of the arc sliding plate to form a seal when the gate valve is opened, the arc surface of the bottom of the arc sliding plate is flush with the arc surface of the bottom of the arc-shaped plate, the arc surface of the bottom of the arc-shaped plate and the arc surface of the top of the arc clamping seat are matched with the flow path of the inner wall of the valve body, a straight pipe-like flow path is formed in the gate valve after the gate valve is opened, the fluid is reduced when flowing through the gate valve, the vortex of the fluid flowing through the gate valve is prevented, the power loss required for conveying the fluid is reduced, the top of the opposite surface of the arc sliding plate is a convex arc surface, and the arc surface of the bottom of the arc sliding plate is flush with the arc surface of the bottom of the arc-shaped plate.

[0004] Preferably, the valve core mechanism comprises a connecting disc, the outer side of the connecting disc is slidably matched with the inner wall of the valve body, the bottom of the outer side of the connecting disc is symmetrically provided with arc strip grooves, the arc strip grooves of the connecting disc are fixedly installed with side arc strips, the center of the top of the connecting disc is fixedly installed with a rotating groove seat, the center of the bottom of the connecting disc is fixedly installed with a gate plate, the arc surface of the bottom of the gate plate is matched with the arc surface of the top of the arc clamping seat, and the top of the two sides of the gate plate is fixedly installed with arc pressing plates, the bottom of the arc pressing plate is a concave arc surface, the arc surface of the bottom of the arc pressing plate is matched with the arc surface of the top of the arc-shaped plate, the arc surface of the bottom of the arc pressing plate is synchronously contacted with the arc surface of the top of the arc-shaped plate when the arc surface of the bottom of the gate plate is contacted with the arc surface of the top of the arc clamping seat, a seal is formed, the fluid flowing through the gate valve is prevented from overflowing from the inner wall of the valve body due to the large internal fluid pressure, the sealing effect of the gate valve in the pipeline communication is affected, and the arc surface of the bottom of the arc pressing plate is matched with the arc surface of the top of the arc-shaped plate.

[0005] Preferably, a support plate is fixedly installed on the top of the connecting plate. The support plate is evenly installed along the center of the connecting plate, and a sliding groove plate is fixedly installed on the top of the support plate. The top of the sliding groove plate is evenly provided with arc-shaped sliding grooves, and an inner support plate is slidably installed at each arc-shaped sliding groove of the sliding groove plate. A sealing ring is fixedly installed on the outer side of the inner support plate. The outer side of the sealing ring is in contact with the inner wall of the valve body. A protrusion is fixedly installed on the top of the inner support plate. The protrusion on the top of the inner support plate cooperates with the conical surface at the bottom of the inner retaining ring. When the gate valve is opened, as the protrusion contacts the conical surface at the bottom of the inner retaining ring and moves upward, the protrusion pushes the inner support plate to slide in the sliding groove of the sliding groove plate, squeezing the sealing ring and increasing the contact pressure between the sealing ring and the inner wall of the valve body. This provides a good sealing effect and prevents the fluid from overflowing the gate valve when the fluid flows through the gate valve under high pressure. The protrusion is adapted to the conical surface at the bottom of the inner retaining ring.

[0006] Preferably, the drive mechanism includes a connecting cylinder with an annular groove at its bottom. A rubber disc is fixedly installed in the annular groove of the connecting cylinder. The bottom of the connecting cylinder is fixedly connected to the top of the valve body by bolts. A convex ring is provided at the bottom of the connecting cylinder, with the outer side of the convex ring fitting against the inner wall of the cylinder body. The convex ring and the annular groove of the connecting cylinder cooperate. During installation, the rubber disc is inserted into the annular groove, and the outer side of the convex ring fits against the inner wall of the valve body. The fit between the bottom of the convex ring and the top of the inner retaining ring increases the curvature of the contact surface at the connection position between the valve body and the connecting cylinder, increasing the flow path length in case of fluid overflow. This, combined with the seal between the valve core mechanism and the valve body, improves the sealing performance of the gate valve when the pipeline is connected. The bottom of the convex ring and the top of the inner retaining ring are tightly fitted. A connecting seat is fixedly installed at the top of the connecting cylinder, and a motor is fixedly installed at the top of the connecting seat. The output end of the motor passes through the connecting cylinder and extends into its interior.

[0007] Preferably, a fixed cylinder is fixedly installed at the output end of the motor, and a rotating cylinder is fixedly installed at the bottom end of the fixed cylinder. The outer side of the rotating cylinder is rotatably adapted to the inner wall of the connecting cylinder, and a threaded cylinder is fixedly installed on the inner wall of the rotating cylinder. A screw is threadedly connected to the inner wall of the threaded cylinder, and the bottom end of the screw is fixedly connected to the top of the rotating slot seat. A groove is opened on the inner wall of the connecting cylinder, and an inner support cylinder is rotatably installed at the groove of the connecting cylinder. The inner support cylinder contacts the outer side of the fixed cylinder through the arc-shaped protrusion. When the fixed cylinder rotates, the arc-shaped protrusion restricts the center position of the rotation axis of the fixed cylinder to prevent rotational deviation, which could cause jamming when opening or closing the gate valve. At the same time, the arc-shaped protrusion contacts the fixed cylinder to reduce the contact area with the fixed cylinder, reducing the frictional resistance experienced by the fixed cylinder during rotation and ensuring smooth operation when opening and closing the gate valve. The inner wall of the inner support cylinder is uniformly provided with arc-shaped protrusions, and the inner support cylinder contacts the outer side of the fixed cylinder through the arc-shaped protrusions.

[0008] This invention provides a high-pressure, energy-saving, and versatile parallel valve gate valve. It has the following beneficial effects: (I) This high-pressure, energy-saving, and universal parallel valve gate valve, through the cooperation of the inner gasket and the rubber gasket, makes the opposite surfaces of the arc plate fit tightly together to form a seal when the gate valve is opened. With the bottom arc surface of the arc plate being flush with the bottom arc surface of the arc plate, and the bottom arc surface of the arc plate and the top arc surface of the arc seat matching the flow path of the valve body, a flow path similar to a straight pipe is formed inside the gate valve after the gate valve is opened. When the fluid flows through the gate valve, the obstruction to the fluid is reduced, preventing the fluid from forming eddies when flowing through the gate valve, and reducing the power loss required to transport the fluid.

[0009] (ii) This high-pressure energy-saving universal parallel valve disc gate valve, through the adaptation of the arc surface at the bottom of the arc pressure plate and the arc surface at the top of the arc plate, when the arc surface at the bottom of the gate plate contacts the arc surface at the top of the arc seat, the arc surface at the bottom of the arc pressure plate and the arc surface at the top of the arc plate simultaneously contact to form a seal, preventing the internal fluid pressure from being too high, which would cause some fluid to overflow from the valve body when the fluid flows through the gate valve, thus affecting the sealing effect of the gate valve in the pipeline connection.

[0010] (III) This high-pressure, energy-saving, and universal parallel valve gate valve, through the cooperation of the protrusion at the top of the inner support plate and the conical surface at the bottom of the inner retaining ring, when the gate valve is opened, as the protrusion contacts the conical surface at the bottom of the inner retaining ring and moves upward, the protrusion pushes the inner support plate to slide in the groove of the sliding plate, squeezing the sealing ring, increasing the contact pressure between the sealing ring and the inner wall of the valve body, providing a good sealing effect, and avoiding the situation where the fluid pressure is too high when the fluid flows through the gate valve under high pressure, resulting in fluid overflow from the gate valve, thus improving the sealing effect of the gate valve.

[0011] (iv) This high-pressure, energy-saving, and universal parallel valve disc gate valve, through the engagement of the annular groove and the convex ring of the connecting cylinder, during installation, a rubber disc is installed in the annular groove, and at the same time, the outer side of the convex ring is in contact with the inner wall of the valve body. In conjunction with the contact between the bottom of the convex ring and the top of the inner retaining ring, the tortuosity of the contact surface at the connection position between the valve body and the connecting cylinder is increased, the flow path length in the case of fluid overflow is increased, and in conjunction with the seal between the valve core mechanism and the valve body, the sealing performance of the gate valve is improved when the pipeline is connected.

[0012] (v) The high-pressure energy-saving universal parallel valve disc gate valve has an arc-shaped protrusion on the inner support cylinder that contacts the outer side of the fixed cylinder. When the fixed cylinder rotates, the arc-shaped protrusion restricts the center position of the rotation axis of the fixed cylinder to prevent rotational deviation and jamming when opening or closing the gate valve. At the same time, the arc-shaped protrusion contacts the fixed cylinder to reduce the contact area with the fixed cylinder, reduce the frictional resistance of the fixed cylinder when rotating, and ensure the smoothness of opening and closing the gate valve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a sectional view showing the positional structure of the valve body, valve core mechanism, and valve seat mechanism of the present invention. Figure 4 This is a sectional view showing the positional structure of the valve body and valve seat mechanism of the present invention; Figure 5 This is a schematic diagram of the valve seat mechanism of the present invention; Figure 6 This is a bottom view of a portion of the valve seat mechanism of the present invention; Figure 7 This is a schematic diagram of the valve core mechanism of the present invention; Figure 8 This is a partial structural schematic diagram of the valve core mechanism of the present invention; Figure 9 This is a schematic diagram of the drive mechanism of the present invention; Figure 10 This is a bottom view of the drive mechanism of the present invention; Figure 11 This is a sectional view of the drive mechanism of the present invention; Figure 12 This is a sectional side view of the drive mechanism of the present invention.

[0014] In the diagram: 1. Valve body; 2. Drive mechanism; 3. Valve seat mechanism; 4. Valve core mechanism; 5. Inner retaining ring; 21. Connecting cylinder; 22. Motor; 23. Connecting seat; 24. Screw; 25. Rubber disc; 26. Threaded cylinder; 27. Rotary cylinder; 28. Inner support cylinder; 29. ​​Fixed cylinder; 31. Arc retaining seat; 32. Arc plate; 33. Inner pad strip; 34. Rubber arc strip; 35. Arc through groove; 36. Arc sliding plate; 401. Gate; 402. Connecting disc; 403. Arc pressure plate; 404. Rotary groove seat; 405. Side arc strip; 406. Support plate; 407. Sealing ring; 408. Inner support plate; 409. Protrusion; 410. Sliding groove disc. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] For the first embodiment, please refer to... Figures 1 to 6 The present invention provides a technical solution: A high-pressure, energy-saving, and versatile parallel valve disc gate valve, comprising: Valve body 1, with an inner retaining ring 5 fixedly installed on the top of the inner wall of valve body 1. The bottom of the inner retaining ring 5 is a tapered surface with an outer diameter that gradually decreases from top to bottom. A drive mechanism 2 is installed on the top of valve body 1. Valve seat mechanism 3 and valve core mechanism 4 are installed inside valve body 1, and valve core mechanism 4 is slidably installed inside valve body 1. The valve seat mechanism 3 includes an arc-shaped plate 32, which is fixedly installed on the inner wall of the valve body 1. An arc-shaped retainer 31 is fixedly installed at the center of the bottom of the arc-shaped plate 32. The arc surface at the bottom of the arc-shaped plate 32 and the arc surface at the top of the arc-shaped retainer 31 are adapted to the inner wall of the valve body 1. An arc-shaped through groove 35 is opened at the center of the top of the arc-shaped plate 32, and arc-shaped sliding grooves are symmetrically opened on the inner wall of the arc-shaped plate 32. Arc-shaped sliding plates 36 are slidably installed at the arc-shaped sliding grooves of the arc-shaped plate 32. Rubber arc strips 34 are snapped into the arc-shaped sliding grooves of the arc-shaped plate 32. Through the support of the rubber arc strips 34 between the arc-shaped plate 32 and the arc-shaped sliding plates 36, when the valve core mechanism 4 is above the arc-shaped plate 32, the arc-shaped sliding plates 36 are slidably installed. The opposing surfaces of the plates 36 are tightly fitted to form a seal. The bottom ends of the arc plate 36 and the top ends of the arc seat 31 are fitted together to form a circular passage. At the same time, the arc surface at the bottom of the arc plate 36 is flush with the arc surface at the bottom of the arc plate 32. The flow path of the arc surface at the bottom of the arc plate 32 and the arc surface at the top of the arc seat 31 is adapted to the inner wall of the valve body 1. After the gate valve is opened, a straight pipe flow path is formed inside, reducing the obstruction encountered by the fluid when flowing through the gate valve. The rubber arc strip 34 is located between the arc plate 36 and the arc plate 32. The arc surface at the bottom of the arc plate 36 is provided with grooves, and an inner gasket 33 is fixedly installed in the groove of the arc plate 36. The inner gasket 33 is made of elastic material.

[0017] The top of the opposite side of the arc plate 36 is a raised arc surface, and both ends of the bottom of the arc plate 36 are in contact with the top ends of the arc seat 31. When the gate valve is closed, the valve core mechanism 4 moves downward under the drive of the drive mechanism 2, so that the valve core mechanism 4 passes through the arc groove 35 of the arc plate 32 and first contacts the arc surface of the top of the opposite side of the arc plate 36. Under the contact pressure, with the movement of the valve core mechanism 4, the arc plate 36 slides in the arc groove of the arc plate 32, compressing the rubber arc strip 34 and deforming it, so that the bottom of the valve core mechanism 4 contacts the sealing surface of the arc seat 31, closing the gate valve and blocking the flow of fluid. The arc surface of the bottom of the arc plate 36 is flush with the arc surface of the bottom of the arc plate 32.

[0018] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 7 to 8As shown, the valve core mechanism 4 includes a connecting plate 402. The outer side of the connecting plate 402 is slidably adapted to the inner wall of the valve body 1. Symmetrical arc grooves are formed at the bottom of the outer side of the connecting plate 402. Side arc strips 405 are fixedly installed at each arc groove of the connecting plate 402. A rotating seat 404 is fixedly installed at the center of the top of the connecting plate 402. A gate plate 401 is fixedly installed at the center of the bottom of the connecting plate 402. The arc surface of the bottom of the gate plate 401 is adapted to the arc surface of the top of the arc seat 31. When the gate valve is closed, it is connected to the drive mechanism 2 through the rotating seat 404 at the top of the connecting plate 402, causing the drive mechanism 2 to drive the connecting plate 402 to move within the valve body via the rotating seat 404. The gate 401 moves downwards in parallel, causing its bottom to first contact the arc surface of the arc plate 36, pushing the arc plate 36 open. After passing through the arc plate 36, the arc surface at the bottom of the gate 401 gradually contacts and fits against the arc surface at the top of the arc seat 31, forming a seal. At this time, the arc surface at the bottom of the arc pressure plate 403 contacts the top of the arc plate 32, forming a seal. Meanwhile, the opposite surfaces of the arc plate 36 are in close contact with both sides of the gate 401, closing the flow path of the gate valve. Arc pressure plates 403 are fixedly installed on the top of both sides of the gate 401. The bottom of the arc pressure plates 403 is a concave arc surface, and the arc surface at the bottom of the arc pressure plates 403 matches the arc surface at the top of the arc plate 32.

[0019] A support plate 406 is fixedly installed on the top of the connecting plate 402. The support plate 406 is evenly installed along the center of the connecting plate 402, and a sliding groove plate 410 is fixedly installed on the top of the support plate 406. The top of the sliding groove plate 410 is evenly provided with arc-shaped sliding grooves, and an inner support plate 408 is slidably installed at each arc-shaped sliding groove of the sliding groove plate 410. A sealing ring 407 is fixedly installed on the outer side of the inner support plate 408. The outer side of the sealing ring 407 is in contact with the inner wall of the valve body 1. When the gate valve is opened, the drive mechanism 2 drives the connecting plate 402 to move upward. During the upward movement, the sealing ring is connected by the side arc strip 405. The 407 mating seals the gap between the sealing connecting plate 402 and the inner wall of the valve body 1. At the same time, after the protrusion 409 contacts the tapered surface at the bottom of the inner retaining ring 5, during the upward movement, the outer diameter of the tapered surface of the inner retaining ring 5 gradually decreases from top to bottom. During the upward movement of the connecting plate 402, the protrusion 409 pushes the inner support plate 408 to slide in the groove of the sliding plate 410, squeezing the sealing ring 407 and increasing the contact pressure between the sealing ring 407 and the inner wall of the valve body 1. The top of the inner support plate 408 is fixedly installed with the protrusion 409, which is adapted to the tapered surface at the bottom of the inner retaining ring 5.

[0020] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 9 to 12As shown, the drive mechanism 2 includes a connecting cylinder 21. The bottom of the connecting cylinder 21 has an annular groove, and a rubber disc 25 is fixedly installed at the annular groove of the connecting cylinder 21. The bottom of the connecting cylinder 21 is fixedly connected to the top of the valve body 1 by bolts. The bottom of the connecting cylinder 21 is provided with a convex ring. The outer side of the convex ring is in contact with the inner wall of the cylinder body. It is fixedly connected to the valve core mechanism 4 by a screw 24. When the gate valve is opened, the motor 22 drives the fixed cylinder 29 to rotate forward, and drives the threaded cylinder 26 through the rotating cylinder 27. The threaded connection between the threaded cylinder 26 and the screw 24 causes the screw 24 to move upward, and drives the valve core mechanism 4 to move upward synchronously, opening the gate valve. The bottom of the convex ring is tightly in contact with the top of the inner retaining ring 5. A connecting seat 23 is fixedly installed on the top of the connecting cylinder 21. A motor 22 is fixedly installed on the top of the connecting seat 23. The output end of the motor 22 passes through the connecting cylinder 21 and extends into its interior.

[0021] A fixed cylinder 29 is fixedly installed at the output end of the motor 22, and a rotating cylinder 27 is fixedly installed at the bottom end of the fixed cylinder 29. The outer side of the rotating cylinder 27 is adapted to rotate with the inner wall of the connecting cylinder 21, and a threaded cylinder 26 is fixedly installed on the inner wall of the rotating cylinder 27. A screw 24 is threadedly connected to the inner wall of the threaded cylinder 26. When the gate valve is closed, the motor 22 drives the fixed cylinder 29 to reverse, causing the screw 24 to drive the valve core mechanism 4 to move down synchronously, so that the sealing contact surface of the valve core mechanism 4 and the valve seat mechanism 3 are in contact, forming a seal and closing the gate valve. During the rotation of the fixed cylinder 29... The inner wall of the inner support cylinder 28 contacts the inner wall of the fixed cylinder 29, thus restricting the center position of the rotation axis of the fixed cylinder 29. At the same time, the contact area between the inner support cylinder 28 and the fixed cylinder 29 is reduced by the contact strip of the inner support cylinder 28, thereby reducing the friction. The bottom end of the screw 24 is fixedly connected to the top of the rotating slot seat 404. The inner wall of the connecting cylinder 21 is provided with a cylinder groove, and the inner support cylinder 28 is rotatably installed at the through groove of the connecting cylinder 21. The inner wall of the inner support cylinder 28 is evenly provided with arc-shaped protrusions, and the inner support cylinder 28 contacts the outer side of the fixed cylinder 29 through the arc-shaped protrusions.

[0022] In use, the two ends of the flow path of the valve body 1 are connected to the flow pipeline through flanges. The drive mechanism 2 drives the valve core mechanism 4 to move up and down parallel inside the valve body 1. During the upward movement, it disengages from the valve seat mechanism 3, opening the flow path of the valve body 1 and realizing the opening of the gate valve. When the drive mechanism 2 drives the valve core mechanism 4 to move downward, the sealing surfaces of the valve core mechanism 4 and the valve seat mechanism 3 gradually come into contact, forming a seal, closing the flow path, and realizing the closing of the gate valve.

[0023] In the valve seat mechanism 3, the rubber arc strip 34 supports the arc plate 32 and the arc slide plate 36. When the valve core mechanism 4 is above the arc plate 32, the opposing surfaces of the arc slide plate 36 are tightly fitted to form a seal. The fit between the bottom ends of the arc slide plate 36 and the top ends of the arc seat 31 forms a circular passage. At the same time, the arc surface at the bottom of the arc slide plate 36 is flush with the arc surface at the bottom of the arc plate 32. This, combined with the matching of the arc surface at the bottom of the arc plate 32 and the arc surface at the top of the arc seat 31 with the flow path of the inner wall of the valve body 1, allows for the flow of gas through the valve body 1 after the gate valve is opened. The flow path is formed by the straight pipe, which reduces the obstruction encountered by the fluid when it flows through the gate valve. At the same time, when the gate valve is closed, the valve core mechanism 4 moves downward under the drive mechanism 2, so that the valve core mechanism 4 passes through the arc groove 35 of the arc plate 32 and first contacts the top arc surface of the opposite side of the arc plate 36. Under the contact pressure, with the movement of the valve core mechanism 4, the arc plate 36 slides in the arc groove of the arc plate 32, compressing the rubber arc strip 34 and deforming it, so that the bottom of the valve core mechanism 4 contacts the sealing surface of the arc seat 31, closing the gate valve and blocking the flow of fluid.

[0024] In the valve core mechanism 4, when the gate valve is closed, it is connected to the drive mechanism 2 via the rotating seat 404 on the top of the connecting plate 402. The drive mechanism 2 drives the connecting plate 402 to move parallel downward inside the valve body 1 via the rotating seat 404. This causes the bottom of the gate plate 401 to first contact the arc-shaped surface of the arc-shaped slide plate 36, pushing the arc-shaped slide plate 36 open. After passing through the arc-shaped slide plate 36, the arc-shaped surface at the bottom of the gate plate 401 gradually contacts and fits against the arc-shaped surface at the top of the arc-shaped seat 31, forming a seal. At this time, the arc-shaped surface at the bottom of the arc-shaped pressure plate 403 contacts the top of the arc-shaped plate 32, forming a seal. Simultaneously, the opposite surfaces of the arc-shaped slide plate 36 are tightly pressed against the two sides of the gate plate 401, closing the gate. When the valve's flow path is closed, the drive mechanism 2 moves the connecting plate 402 upward when the gate valve is opened. During the upward movement, the side arc strip 405 cooperates with the sealing ring 407 to seal the gap between the connecting plate 402 and the inner wall of the valve body 1. At the same time, after the protrusion 409 contacts the tapered surface at the bottom of the inner retaining ring 5, during the upward movement, the outer diameter of the tapered surface of the inner retaining ring 5 gradually decreases from top to bottom. During the upward movement of the connecting plate 402, the protrusion 409 pushes the inner support plate 408 to slide in the groove of the sliding plate 410, squeezing the sealing ring 407 and increasing the contact pressure between the sealing ring 407 and the inner wall of the valve body 1.

[0025] In the drive mechanism 2, the screw 24 is fixedly connected to the valve core mechanism 4. When the gate valve is opened, the motor 22 drives the fixed cylinder 29 to rotate forward, and drives the threaded cylinder 26 through the rotating cylinder 27. The threaded connection between the threaded cylinder 26 and the screw 24 causes the screw 24 to move upward, and drives the valve core mechanism 4 to move upward synchronously, thus opening the gate valve. When the gate valve is closed, the motor 22 drives the fixed cylinder 29 to rotate in reverse, causing the screw 24 to drive the valve core mechanism 4 to move downward synchronously, so that the sealing contact surface of the valve core mechanism 4 and the valve seat mechanism 3 are in contact, forming a seal and closing the gate valve. During the rotation of the fixed cylinder 29, the arc-shaped protrusion on the inner wall of the inner support cylinder 28 contacts the inner wall of the fixed cylinder 29, restricting the center position of the rotation axis of the fixed cylinder 29. At the same time, the arc-shaped protrusion contacts the fixed cylinder 29, reducing the contact area and friction.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure, energy-saving, and universal parallel valve gate valve, characterized in that, include: The valve body (1) has an inner retaining ring (5) fixedly installed on the top of the inner wall of the valve body (1). The bottom of the inner retaining ring (5) is a tapered surface with an outer diameter that gradually decreases from top to bottom. The top of the valve body (1) is equipped with a drive mechanism (2). A valve seat mechanism (3) and a valve core mechanism (4) are provided, wherein the valve seat mechanism (3) is installed inside the valve body (1) and the valve core mechanism (4) is slidably installed inside the valve body (1); The valve seat mechanism (3) includes an arc plate (32), which is fixedly installed on the inner wall of the valve body (1). An arc seat (31) is fixedly installed at the center of the bottom of the arc plate (32). The arc surface at the bottom of the arc plate (32) and the arc surface at the top of the arc seat (31) are adapted to the inner wall of the valve body (1). An arc groove (35) is opened at the center of the top of the arc plate (32), and the inner wall of the arc plate (32) is symmetrical. The arc-shaped plate (32) is provided with an arc-shaped groove, and an arc-shaped plate (36) is slidably installed at the arc-shaped groove. A rubber arc strip (34) is snapped into the arc-shaped groove of the arc-shaped plate (32). The rubber arc strip (34) is located between the arc-shaped plate (36) and the arc-shaped plate (32). A groove is provided on the arc surface at the bottom of the arc-shaped plate (36), and an inner pad strip (33) is fixedly installed in the groove of the arc-shaped plate (36). The inner pad strip (33) is made of elastic material.

2. The high-pressure, energy-saving, and universal parallel valve gate valve according to claim 1, characterized in that: The top of the opposite side of the arc plate (36) is a raised arc surface, and both ends of the bottom of the arc plate (36) are in contact with both ends of the top of the arc card seat (31). The arc surface of the bottom of the arc plate (36) is flush with the arc surface of the bottom of the arc plate (32).

3. The high-pressure, energy-saving, and universal parallel valve gate valve according to claim 2, characterized in that: The valve core mechanism (4) includes a connecting plate (402), the outer side of the connecting plate (402) is slidably adapted to the inner wall of the valve body (1), and the bottom of the outer side of the connecting plate (402) is symmetrically provided with arc grooves. Side arc strips (405) are fixedly installed at the arc grooves of the connecting plate (402), and a rotating slot seat (404) is fixedly installed at the center of the top of the connecting plate (402).

4. A high-pressure, energy-saving, and universal parallel valve gate valve according to claim 3, characterized in that: A gate plate (401) is fixedly installed at the center of the bottom of the connecting plate (402). The arc surface at the bottom of the gate plate (401) is adapted to the arc surface at the top of the arc card seat (31). Arc pressure plates (403) are fixedly installed on the top of both sides of the gate plate (401). The bottom of the arc pressure plates (403) is a concave arc surface. The arc surface at the bottom of the arc pressure plates (403) is adapted to the arc surface at the top of the arc plate (32).

5. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 4, characterized in that: A support plate (406) is fixedly installed on the top of the connecting plate (402). The support plate (406) is evenly installed along the center of the connecting plate (402). A sliding groove plate (410) is fixedly installed on the top of the support plate (406). An arc groove is evenly opened on the top of the sliding groove plate (410). An inner support plate (408) is slidably installed at the arc groove of the sliding groove plate (410).

6. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 5, characterized in that: A sealing ring (407) is fixedly installed on the outer side of the inner support plate (408). The outer side of the sealing ring (407) is in contact with the inner wall of the valve body (1). A protrusion (409) is fixedly installed on the top of the inner support plate (408). The protrusion (409) is adapted to the conical surface at the bottom of the inner retaining ring (5).

7. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 6, characterized in that: The drive mechanism (2) includes a connecting cylinder (21), the bottom of which is provided with an annular groove, and a rubber disc (25) is fixedly installed at the annular groove of the connecting cylinder (21). The bottom of the connecting cylinder (21) is fixedly connected to the top of the valve body (1) by bolts.

8. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 7, characterized in that: The bottom of the connecting cylinder (21) is provided with a convex ring. The outer side of the convex ring is in contact with the inner wall of the cylinder body, and the bottom of the convex ring is in close contact with the top of the inner retaining ring (5). A connecting seat (23) is fixedly installed on the top of the connecting cylinder (21), and a motor (22) is fixedly installed on the top of the connecting seat (23). The output end of the motor (22) passes through the connecting cylinder (21) and extends into its interior.

9. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 8, characterized in that: A fixed cylinder (29) is fixedly installed at the output end of the motor (22), and a rotating cylinder (27) is fixedly installed at the bottom end of the fixed cylinder (29). The outer side of the rotating cylinder (27) is rotatably adapted to the inner wall of the connecting cylinder (21), and a threaded cylinder (26) is fixedly installed on the inner wall of the rotating cylinder (27). A screw (24) is threadedly connected to the inner wall of the threaded cylinder (26).

10. A high-pressure, energy-saving, universal parallel valve gate valve according to claim 9, characterized in that: The bottom end of the screw (24) is fixedly connected to the top of the rotating slot seat (404). The inner wall of the connecting cylinder (21) is provided with a cylinder groove, and an inner support cylinder (28) is rotatably installed at the through groove of the connecting cylinder (21). The inner wall of the inner support cylinder (28) is uniformly provided with arc protrusions, and the inner support cylinder (28) contacts the outer side of the fixed cylinder (29) through the arc protrusions.

Images