Full-bore gate valve capable of being opened and closed quickly
By designing the opposite movements of the first sealing plate and the second sealing plate and the pressure plate structure, the problems of slow flow rate and impurity deposition during the opening or closing of the gate valve are solved, rapid opening and closing and full-bore circulation are achieved, the fluid flow rate is increased and impurity deposition is avoided.
Patent Information
- Application Number
- CN202511112942.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-10
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing gate valves have a large movement distance during opening or closing, which slows down the fluid flow rate and generates turbulence and impurity deposition at the gate position, shortening the service life.
The first sealing plate and the second sealing plate are designed, and the driving assembly drives the two to move in opposite directions. Combined with the pressure plate and the adjusting bolt, rapid opening and closing can be achieved, impurity deposition can be avoided, and the fluid can flow through the entire diameter.
It realizes fast opening and closing, reduces fluid resistance, increases flow rate, avoids impurity deposition and prolongs service life.
Smart Images
Figure CN120667548A_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a fast-opening and closing full-diameter gate valve, belonging to the technical field of valves. Background Art
[0002] With the development of society, pipeline connections are needed in both production and life. In pipeline connections, pipeline connectors are required, among which gate valves are one of the frequently used pipeline connectors. The movement direction of the gate in the existing gate valve is perpendicular to the direction of the fluid. Since the movement stroke of the gate is larger than the diameter of the fluid flowing through the valve body, when the gate valve is fully opened, the fluid flows through the position of the gate, and turbulence will occur in the cavity where the gate is installed in the valve body, thereby affecting the flow rate of the fluid. At the same time, impurities in the fluid will be deposited there, and it needs to be cleaned after a period of use. Moreover, when the gate is opened, its movement distance to one side is large, which makes the entire gate valve opening or closing process take a long time. Summary of the Invention
[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a fast opening and closing full-bore gate valve.
[0004] The present invention achieves the above-mentioned purpose through the following technical scheme: a full-bore gate valve with rapid opening and closing, comprising a valve body and a gate plate, a first flow hole being provided in the valve body, and a first mounting cavity being provided in the middle of the valve body, the gate plate sliding in the first mounting cavity, the gate plate comprising a first sealing plate and a second sealing plate, the first sealing plate being a concave structure, the second sealing plate being a convex structure, and the middle part of the second sealing plate being embedded in the first sealing plate, a second flow hole being provided on both the first sealing plate and the second sealing plate, the diameter of the second flow hole being equal to the diameter of the first flow hole, a screw being fixedly installed on both the first sealing plate and the second sealing plate, a valve cover for closing the first mounting cavity being fixedly installed on the valve body, one end of the screw passing through the valve cover and extending to its outside, a drive assembly for driving the screw to rise and fall vertically being provided in the valve cover.
[0005] Preferably, the drive assembly includes a transmission member and a power member, and the transmission member is provided in two groups, and includes a driving sprocket, a driven sprocket and a chain. A second mounting cavity is provided in the valve cover, and the driving sprocket and the driven sprocket are both rotatably mounted in the second mounting cavity. The screw is threadedly connected to the driven sprocket, and the chain is sleeved on the outside of the driving sprocket and the driven sprocket. The power member is installed in the valve cover and is used to drive the two driving sprockets to rotate. A first cover plate for closing the second mounting cavity is provided on the valve cover, and one end of the screw is arranged through the first cover plate.
[0006] Preferably, the power part includes a driving bevel gear, a driven bevel gear, a driving shaft, a driven shaft and a handwheel, a third mounting cavity is provided in the valve cover, and a second cover plate for closing the third mounting cavity is provided on the valve cover, two groups of the driven bevel gear and the driven shaft are provided, one end of the driven shaft is fixedly connected to the driving sprocket, and the other end is fixedly connected to the driven bevel gear, the driving shaft and the second cover plate are rotatably arranged, and the two ends of the driving shaft are fixedly connected to the driving bevel gear and the handwheel respectively, the driving bevel gear and the driven bevel gear are both located in the third mounting cavity, and the two driven bevel gears are meshed with the driving bevel gear.
[0007] Preferably, pressure plates are provided on both sides of the first sealing plate, and the pressure plate has a guide column and a sleeve on the side away from the first sealing plate, one end of the sleeve extends into the first flow hole, and the inner hole diameter of the sleeve is equal to the diameter of the first flow hole, one end of the guide column is slidably embedded in the valve body, and an adjusting bolt is provided at the position of the valve body corresponding to the guide column, and one end of the adjusting bolt is in conflict with the guide column.
[0008] Preferably, a liquid level sensor for monitoring the liquid level of the fluid in the first installation cavity is provided in the valve body.
[0009] Preferably, one of the first cover plates is provided with a measuring assembly, the measuring assembly includes a movable rod, a fastening bolt, a sliding sleeve and a connecting rod, one end of the connecting rod is mounted on the screw rod through the fastening bolt, and the other end of the connecting rod is fixedly connected to the movable rod, the sliding sleeve is fixed on the first cover plate, one end of the movable rod is slidably arranged with the sliding sleeve, the sliding sleeve is a transparent plastic shell, and the surface of the sliding sleeve has a scale.
[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the first sealing plate, the second sealing plate and the driving assembly, the driving assembly drives the first sealing plate and the second sealing plate to move in opposite directions, which can achieve rapid closing or opening, and when the gate valve is in a fully open state, it can achieve the effect of full-bore circulation, so that the resistance to fluid flow is smaller and the flow speed is faster.
[0011] 2. By arranging a pressure plate and an adjusting bolt on both sides of the first sealing plate, the relative position of the pressure plate can be adjusted by rotating the adjusting bolt. In this way, when the pressure plate is worn during the opening and closing process of the gate valve, the pressure plate can be kept in contact with the first sealing plate by rotating the adjusting bolt, so that the fluid will not seep into the first installation cavity, thereby avoiding the deposition of impurities in the fluid. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural schematic diagram of a fast-opening and closing full-bore gate valve of the present invention; Figure 2 This is a cross-sectional view of a fast opening and closing full-bore gate valve of the present invention Figure 1 ; Figure 3 This is a cross-sectional view of a fast opening and closing full-bore gate valve of the present invention Figure 2 ; Figure 4 Schematic diagram of the structure of the valve body, valve cover and transmission parts in the present invention; Figure 5 It is a structural schematic diagram of the pressure plate, the first sealing plate and the second sealing plate in the present invention; Figure 6 Schematic diagram of the structure of the valve cover in the present invention; Figure numerals: 1. adjusting bolt; 2. first circulation hole; 3. valve body; 4. liquid level sensor; 5. screw; 6. measuring assembly; 7. valve cover; 8. power part; 9. guide column; 10. driving sprocket; 11. first mounting cavity; 12. first sealing plate; 13. second circulation hole; 14. pressure plate; 15. second sealing plate; 16. first cover plate; 17. fastening bolt; 18. connecting rod; 19. movable rod; 20. sliding sleeve; 21. driving bevel gear; 22. driving shaft; 23. handwheel; 24. driven bevel gear; 25. driven shaft; 26. transmission part; 27. second cover plate; 28. chain; 29. driven sprocket; 30. sleeve; 31. second mounting cavity; 32. third mounting cavity. DETAILED DESCRIPTION
[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0014] like Figures 1-6As shown, a fast opening and closing full-bore gate valve includes a valve body 3 and a gate plate, a first flow hole 2 is provided in the valve body 3, and a first mounting cavity 11 is provided in the middle of the valve body 3, the gate plate slides in the first mounting cavity 11, the gate plate includes a first sealing plate 12 and a second sealing plate 15, the first sealing plate 12 is a concave structure, the second sealing plate 15 is a convex structure, and the middle part of the second sealing plate 15 is embedded in the first sealing plate 12, the first sealing plate 12 and the second sealing plate 15 are both provided with a second flow hole 13, the diameter of the second flow hole 13 is equal to the diameter of the first flow hole 2, the first sealing plate 12 and the second sealing plate 15 are both fixedly installed with a screw 5, a valve cover 7 for closing the first mounting cavity 11 is fixedly installed on the valve body 3, one end of the screw 5 passes through the valve cover 7 and extends to its outside, and a driving component for driving the screw 5 to rise and fall vertically is provided in the valve cover 7.
[0015] The drive assembly includes a transmission member 26 and a power member 8. The transmission member 26 is provided with two groups, and includes a driving sprocket 10, a driven sprocket 29 and a chain 28. A second mounting cavity 31 is provided in the valve cover 7. The driving sprocket 10 and the driven sprocket 29 are both rotatably mounted in the second mounting cavity 31. The screw 5 is threadedly connected to the driven sprocket 29. The chain 28 is sleeved on the outside of the driving sprocket 10 and the driven sprocket 29. The power member 8 is installed in the valve cover 7 and is used to drive the two driving sprockets 10 to rotate. The valve cover 7 is provided with a first cover plate 16 for closing the second mounting cavity 31. One side of the screw 5 is provided with a first cover plate 16 for closing the second mounting cavity 31. The end is set through the first cover plate 16, the power member 8 includes a driving bevel gear 21, a driven bevel gear 24, a driving shaft 22, a driven shaft 25 and a handwheel 23, a third mounting cavity 32 is provided in the valve cover 7, and a second cover plate 27 for closing the third mounting cavity 32 is provided on the valve cover 7, the driven bevel gear 24 and the driven shaft 25 are provided with two groups, one end of the driven shaft 25 is fixedly connected to the driving sprocket 10, and the other end is fixedly connected to the driven bevel gear 24, the driving shaft 22 is rotatably set with the second cover plate 27, and the two ends of the driving shaft 22 are respectively fixed to the driving bevel gear 21 and the handwheel 23 The driving bevel gear 21 and the driven bevel gear 24 are both located in the third mounting cavity 32, and the two driven bevel gears 24 are meshed with the driving bevel gear 21. When the hand wheel 23 is turned, the driving shaft 22 drives the driving bevel gear 21 to rotate, so that the driving bevel gear 21 drives the two driven bevel gears 24 to rotate, so that the driven shaft 25 can drive the driving sprocket 10 to rotate, and drive the driven sprocket 29 to rotate by relying on the chain 28. Since one end of the two screws 5 is fixed to the first sealing plate 12 and the second sealing plate 15, the first sealing plate 12 and the second sealing plate 15 can only remain vertical. Sliding, so that when the driven sprocket 29 rotates, the two screws 5 can only drive the first sealing plate 12 and the second sealing plate 15 to slide, and the sliding directions of the two are opposite. When the gate valve is opened or closed, the first sealing plate 12 and the second sealing plate 15 only need to move a distance of 0.5 times the diameter of the first flow hole 2 to close or open the gate valve, making the opening and closing faster. At the same time, the active bevel gear 21 drives the two driven bevel gears 24 to rotate, thereby transmitting power from the two driven shafts 25 to the transmission member 26. This design can reduce the torque of the handwheel 23.
[0016] A pressure plate 14 is provided on both sides of the first sealing plate 12. A guide post 9 and a sleeve 30 are provided on the side of the pressure plate 14 away from the first sealing plate 12. One end of the sleeve 30 extends into the first flow hole 2, and the inner hole diameter of the sleeve 30 is equal to the diameter of the first flow hole 2. One end of the guide post 9 is slidably inserted into the valve body 3. An adjusting bolt 1 is provided at a position on the valve body 3 corresponding to the guide post 9. One end of the adjusting bolt 1 abuts against the guide post 9. The hardness of the pressure plate 14 is lower than that of the first sealing plate 12. When the first sealing plate 12 and the pressure plate 14 move relative to each other, the pressure plate 14 wears first. This prevents the first sealing plate 12 from directly contacting the valve body 3. When the pressure plate 14 wears, the adjusting bolt 1 is rotated to push the guide post 9 to slide. This allows the pressure plate 14 to maintain a state of abutting against the first sealing plate 12, allowing continued use. The sleeve 30 ensures that during this process, fluid does not enter the first mounting cavity 11 from between the pressure plate 14 and the valve body 3.
[0017] A liquid level sensor 4 is provided in the valve body 3 for monitoring the liquid level height of the fluid in the first installation cavity 11. When the liquid level sensor 4 detects that there is fluid in the first installation cavity 11, it indicates that fluid is seeping out between the first sealing plate 12 and the pressure plate 14. At this time, it is necessary to adjust the position of the pressure plate 14 so that the pressure plate 14 continues to contact the first sealing plate 12.
[0018] A measuring assembly 6 is provided on one of the first cover plates 16. The measuring assembly 6 includes a movable rod 19, a fastening bolt 17, a sliding sleeve 20 and a connecting rod 18. One end of the connecting rod 18 is mounted on the screw rod 5 by the fastening bolt 17, and the other end of the connecting rod 18 is fixedly connected to the movable rod 19. The sliding sleeve 20 is fixed on the first cover plate 16. One end of the movable rod 19 is slidably arranged with the sliding sleeve 20. The sliding sleeve 20 is a transparent plastic shell, and the surface of the sliding sleeve 20 has a scale. When the screw rod 5 is moving, the moving distance of the movable rod 19 in two time periods can be used to accurately know the moving distance of the screw rod 5, thereby making it convenient for the operator to know whether the gate valve is in a fully closed or open state.
[0019] Working principle: When the valve is fully opened, the first sealing plate 12 and the second sealing plate 15 contact each other in an up-and-down manner. At this time, the first flow hole 2 and the second flow hole 13 completely overlap, and the pressure plate 14 contacts the first sealing plate 12, so that the fluid can pass through the second flow hole 13 without resistance, thereby achieving the effect of full-diameter circulation and a faster flow rate. When the valve needs to be closed, the power member 8 drives the two sets of transmission members 26 to rotate by turning the handwheel 23, so that the driven bevel gear 24 can rotate. Since the first sealing plate 12 and the second sealing plate 15 can only maintain vertical sliding, the two screws 5 can only move up and down, thereby driving the first sealing plate 12 and the second sealing plate 15 toward each other. The movement in the direction away from each other causes the second flow holes 13 on the first sealing plate 12 and the second sealing plate 15 to change from a completely overlapping state to a partially overlapping state, until there is no overlap and they are completely misaligned, thereby completely closing the gate valve. At this time, the first sealing plate 12, the second sealing plate 15, and the pressure plate 14 are still in a completely conflicting state, and the force is stable and reliable. The first sealing plate 12 and the second sealing plate 15 move at the same time, which can realize the closing or opening of the gate valve more quickly, and in this process, the fluid will not flow out from between the first sealing plate 12, the second sealing plate 15 and the pressure plate 14, so that the fluid will not enter the first mounting cavity 11, which can avoid the deposition of impurities and affect the closing of the gate valve.
[0020] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A fast opening and closing full-bore gate valve, comprising a valve body (3) and a gate plate, characterized in that: The valve body (3) is provided with a first flow hole (2), and a first installation cavity (11) is provided in the middle of the valve body (3). The gate slides in the first installation cavity (11). The gate includes a first sealing plate (12) and a second sealing plate (15). The first sealing plate (12) is a concave structure, and the second sealing plate (15) is a convex structure. The middle part of the second sealing plate (15) is embedded in the first sealing plate (12). The first sealing plate (12) and the second sealing plate (15) are 5), a second flow hole (13) is provided on each of the first and second sealing plates (12 and 15), the diameter of the second flow hole (13) is equal to the diameter of the first flow hole (2), a screw (5) is fixedly mounted on each of the first sealing plate (12) and the second sealing plate (15), a valve cover (7) for sealing the first mounting cavity (11) is fixedly mounted on the valve body (3), one end of the screw (5) passes through the valve cover (7) and extends to the outside thereof, and a driving component for driving the screw (5) to vertically rise and fall is provided in the valve cover (7).
2. A fast opening and closing full-bore gate valve according to claim 1, characterized in that: The driving assembly includes a transmission member (26) and a power member (8), the transmission member (26) is provided with two groups, and includes a driving sprocket (10), a driven sprocket (29) and a chain (28), a second mounting cavity (31) is provided in the valve cover (7), the driving sprocket (10) and the driven sprocket (29) are both rotatably mounted in the second mounting cavity (31), the screw (5) is threadedly connected to the driven sprocket (29), the chain (28) is sleeved on the outside of the driving sprocket (10) and the driven sprocket (29), the power member (8) is installed in the valve cover (7), and is used to drive the two driving sprockets (10) to rotate, the valve cover (7) is provided with a first cover plate (16) for closing the second mounting cavity (31), and one end of the screw (5) is provided through the first cover plate (16).
3. A fast opening and closing full-bore gate valve according to claim 2, characterized in that: The power member (8) includes a driving bevel gear (21), a driven bevel gear (24), a driving shaft (22), a driven shaft (25) and a handwheel (23). A third mounting cavity (32) is provided in the valve cover (7), and a second cover plate (27) for closing the third mounting cavity (32) is provided on the valve cover (7). Two groups of the driven bevel gear (24) and the driven shaft (25) are provided. One end of the driven shaft (25) is fixedly connected to the driving sprocket (10), and the other end is fixedly connected to the driven bevel gear (24). The driving shaft (22) is rotatably arranged with the second cover plate (27), and the two ends of the driving shaft (22) are fixedly connected to the driving bevel gear (21) and the handwheel (23), respectively. The driving bevel gear (21) and the driven bevel gear (24) are both located in the third mounting cavity (32), and the two driven bevel gears (24) are meshed with the driving bevel gear (21).
4. A fast opening and closing full-bore gate valve according to claim 1, characterized in that: A pressure plate (14) is provided on both sides of the first sealing plate (12), and a guide column (9) and a sleeve (30) are provided on the side of the pressure plate (14) away from the first sealing plate (12), one end of the sleeve (30) extends into the first flow hole (2), and the inner hole diameter of the sleeve (30) is equal to the diameter of the first flow hole (2), one end of the guide column (9) is slidably embedded in the valve body (3), and an adjusting bolt (1) is provided at a position of the valve body (3) corresponding to the guide column (9), and one end of the adjusting bolt (1) contacts the guide column (9).
5. A fast opening and closing full-bore gate valve according to claim 1, characterized in that: A liquid level sensor (4) for monitoring the liquid level of the fluid in the first installation cavity (11) is provided in the valve body (3).
6. A fast opening and closing full-bore gate valve according to claim 2, characterized in that: A measuring assembly (6) is provided on one of the first cover plates (16), the measuring assembly (6) comprising a movable rod (19), a fastening bolt (17), a sliding sleeve (20) and a connecting rod (18), one end of the connecting rod (18) being mounted on the screw rod (5) via the fastening bolt (17), and the other end of the connecting rod (18) being fixedly connected to the movable rod (19), the sliding sleeve (20) being fixed on the first cover plate (16), one end of the movable rod (19) being slidably arranged with the sliding sleeve (20), the sliding sleeve (20) being a transparent plastic shell, and the surface of the sliding sleeve (20) having a scale.