High-pressure wear-resistant gate valve

Abstract

The invention relates to the field of valves, and discloses a high-pressure wear-resistant gate valve which comprises a rectangular plate and a lifting assembly. A rotating assembly; a valve assembly; a gate valve assembly; and a buffer assembly and a decompression assembly. By installing a pressure reducing assembly, when a flashboard ascends, an electric valve is rotated to be opened, a connecting pipe can be communicated, water flow connected into a convex bent pipe can flow again due to the fact that right-side blocking is cancelled, the water flow can impact three drainage cones and compress a first spring, and the water flow can flow into the convex bent pipe again; when the water flow impacts the drainage cone, part of the water flow flows into the connecting pipe due to the guidance of the spiral groove, and at the moment, the area of the water inlet end of the shell can share the pressure brought by the water flow to form pressure reduction during through-flow; the problem that existing equipment is poor in high-pressure bearing performance at the beginning of flashboard through-flow is solved.

Description

Technical Field

[0001] This application relates to the technical field of valves, and particularly to a high-pressure wear-resistant gate valve. Background Art

[0002] As a key control valve in industrial pipeline systems, gate valves are widely used in fields such as petroleum, chemical industry, electric power, and metallurgy. Their performance directly affects the safety and operating efficiency of the system. In high-pressure transmission scenarios, such as long-distance oil and gas pipelines and high-pressure steam systems, the high-pressure environment poses extremely high requirements on the structural strength, sealing performance, and pressure-bearing capacity of the valve body. If the design is unreasonable, it is easy to cause valve body deformation, seal failure, or medium leakage, leading to safety hazards; conventional wear-resistant materials or surface treatment technologies are difficult to balance the requirements of high-pressure load-bearing and long-term wear resistance. Therefore, a structure that can withstand a high pressure difference at the beginning of the gate plate's flow passage and be wear-resistant when the gate plate is closed needs to be designed. Summary of the Invention

[0003] This application proposes a high-pressure wear-resistant gate valve, which has the advantage of withstanding the water flow pressure, to solve the problem of poor high-pressure performance at the beginning of the gate plate's flow passage.

[0004] To achieve the above object, this application adopts the following technical solutions: A high-pressure wear-resistant gate valve includes a rectangular plate. Multiple support plates are fixedly installed on the top of the rectangular plate. Lifting components are fixedly installed on both sides of the multiple support plates. It also includes a linkage buffer gate valve mechanism, which includes a rotating component fixedly installed in the middle of the lifting component. Multiple support plates have a valve component fixedly installed on their tops. A gate valve component is fixedly installed on the top side inside the valve component. A buffer component is installed on the outer edge of the gate valve component; A pressure-reducing component is installed on the left side inside the valve component. The pressure-reducing component includes two fixed shafts. Three convex bent pipes are installed through between the two fixed shafts. A triangular plate is installed on the right side of the three convex bent pipes. Three round shafts are installed through the left side of the triangular plate. The left ends of the three round shafts are fixedly connected with a drainage cone. Spiral grooves are opened on the outer surfaces of the three drainage cones. First springs are sleeved on the outer edges of the three round shafts.

[0005] Preferably, the three convex bent pipes are installed around the two fixed shafts. The left sides of the three drainage cones correspond to the right sides of the three convex bent pipes. The right ends of the three first springs are elastically connected to the triangular plate. The outer edges of the three convex bent pipes are supported by support plates. The above structure can provide a buffering effect on the water flow pressure during operation.

[0006] Preferably, the lifting assembly includes a vertical plate, two first hydraulic rods are fixedly installed at the inner top end of the vertical plate, a movable plate is fixedly installed at the telescopic ends of the two first hydraulic rods, and both sides of the movable plate are movably clamped inside the vertical plate. The above structure can drive the rotating assembly to move vertically during work.

[0007] Preferably, the rotating assembly includes a horizontal bar, the horizontal bar is installed through the middle parts of the two movable plates, a track plate is fixedly installed at the middle position of the horizontal bar, two racks are slidably installed on the bottom side of the track plate, and both the left and right ends of the two racks are fixedly connected with second hydraulic rods. Two racks are meshed with a gear inside. The above structure can control the opening and closing of the gate valve during work.

[0008] Preferably, the gear is rotatably installed on the bottom side of the track plate, and the fixed ends of the four second hydraulic rods all penetrate through the two movable plates.

[0009] Preferably, the valve assembly includes a housing, the housing is fixedly installed on the top of the support plate, the housing is divided into a left water inlet end, a right water outlet end and a top control end, a connecting ring is fixedly installed on the outer edge of the right end of the housing and the outer edge of the left fixed shaft, and a connecting pipe is fixedly connected to the back of the housing. An electric valve is fixedly installed at the middle position of the connecting pipe, and a limiting block is fixedly installed at the bottom of the housing.

[0010] Preferably, a fixed shaft and a triangular plate are fixedly connected in sequence on the left inner wall of the housing, the left end of the connecting pipe is fixedly connected to the water inlet end of the housing, and the other end is fixedly connected to the water outlet end of the housing.

[0011] Preferably, the gate valve assembly includes a sealing plate, the sealing plate is fixedly installed on the top of the housing, the sealing plate is divided into a bottom plate and a top plate, multiple bolts penetrate through between the bottom plate and the bottom plate, internal threads are provided inside the sealing plate, and a screw rod is threadedly connected inside the sealing plate. A rotating ring and a gate plate are fixedly installed at the top and bottom of the screw rod respectively. The above structure can block or connect the water flow during work.

[0012] Preferably, the top end of the screw rod is fixedly connected to the bottom side of the gear. When the gate plate seals the housing, it will abut against the limiting block; Preferably, a plurality of first bent holes are penetrated inside the movable ring, a second spring is fixedly connected to the top of the movable ring, the top of the second spring is elastically connected to a fixed ring, a plurality of second bent holes are penetrated inside the fixed ring, and the bending directions of the first bent holes and the second bent holes are opposite. The fixed ring is fixedly sleeved on the outer edge of the screw rod. The above structure can buffer the backflow water flow during work.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention is equipped with a pressure reducing assembly. When the gate plate rises, the electric valve rotates and opens, so that the connecting pipe can pass through. The water flow in the convex bent pipe will flow again due to the cancellation of the right-side obstruction. The water flow will impact the three drainage cones, compressing the first spring. The circular shaft will also drive the drainage cone to move a distance to the right side of the triangular plate. When the water flow impacts the drainage cone, part of the water flow will flow into the connecting pipe due to the guidance of the spiral groove. At this time, the area at the water inlet end of the shell will share the pressure brought by the water flow, forming a pressure reduction during flow, which solves the problem of poor high-pressure performance of the existing equipment at the beginning of the gate plate flow.

[0014] 2. The present invention is designed with a buffer component. The backflowing water flow will first squeeze the movable ring and cause the second spring to contract. Part of the water flow will go upward through the first curved hole, and then fill the upper cavity of the shell after passing through the second curved hole, and finally be blocked by the sealing plate. Because the curved pipelines of the first curved hole and the second curved hole are opposite, the backflowing water flow will have its pressure greatly reduced again, thereby protecting the entire gate valve assembly and improving the structural wear resistance when the gate is closed.

[0015] 3. The present invention is designed with a mechanism that cooperates with a lifting assembly and a rotating assembly. Four second hydraulic rods cooperate in a linked manner, two of which extend and two of which shorten the stroke, thereby driving two symmetrical racks to move and driving the gear to rotate counterclockwise. At this time, the screw will continue to rotate upward in the sealing plate. At the same time, the first hydraulic rod increases the stroke, pushes the movable plate upward and makes it move upward in the vertical plate, driving the entire rotating assembly to move upward, thereby cooperating with the continuously rotating screw, and the hydraulic direct drive force is converted into rotational force, which can achieve a larger rotational torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle; Figure 3 It is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the valve assembly of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a schematic diagram of the structure of the gate valve assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the decompression assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the buffer assembly of the present invention.

[0017] Wherein: 1. rectangular plate; 2. lifting assembly; 3. rotating assembly; 4. valve assembly; 5. pressure reducing assembly; 6. gate valve assembly; 7. buffer assembly; 11. support plate; 21. vertical plate; 22. first hydraulic rod; 23. movable plate; 31. horizontal bar; 32. track plate; 33. rack; 34. second hydraulic rod; 35. gear; 41. housing; 42. connecting ring; 43. connecting pipe; 44. electric valve; 45. limit block; 51. fixed shaft; 52. convex elbow; 53. triangular plate; 54. round shaft; 55. drainage cone; 56. spiral groove; 57. first spring; 61. sealing plate; 62. bolt; 63. swivel ring; 64. screw; 65. gate plate; 71. movable ring; 72. first bent hole; 73. second spring; 74. fixed ring; 75. second bent hole. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] Please refer to Figures 1-8 , the high-pressure wear-resistant gate valve of this embodiment includes a rectangular plate 1. Multiple support plates 11 are fixedly installed at the top of the rectangular plate 1. Lifting assemblies 2 are fixedly installed on both sides of the multiple support plates 11. It also includes a linkage buffer gate valve mechanism, which includes a rotating assembly 3. The rotating assembly 3 is fixedly installed in the middle of the lifting assembly 2. Multiple support plates 11 are fixedly installed with a valve assembly 4 at the top. A gate valve assembly 6 is fixedly installed on the top side inside the valve assembly 4. A buffer assembly 7 is installed on the outer edge of the gate valve assembly 6; A pressure reducing assembly 5 is installed on the left side inside the valve assembly 4. The pressure reducing assembly 5 includes two fixed shafts 51. Three convex elbows 52 are installed through between the two fixed shafts 51. A triangular plate 53 is installed on the right side of the three convex elbows 52. Three round shafts 54 are installed through the left side of the triangular plate 53. The left ends of the three round shafts 54 are fixedly connected with drainage cones 55. Spiral grooves 56 are provided on the outer surfaces of the three drainage cones 55. First springs 57 are sleeved on the outer edges of the three round shafts 54; The three convex elbows 52 are installed around between the two fixed shafts 51. The left sides of the three drainage cones 55 correspond to the right sides of the three convex elbows 52 respectively. The right ends of the three first springs 57 are elastically connected with the triangular plate 53. The outer edges of the three convex elbows 52 are supported by the support plates 11; When the gate plate 65 rises, the electric valve 44 rotates and opens, so that the connecting pipe 43 can pass through. The water flow in the convex curved pipe 52 will flow again due to the cancellation of the right-side obstruction. The water flow will impact the three drainage cones 55, compressing the first spring 57. The circular shaft 54 ​​will also drive the drainage cone 55 to move a distance to the right side of the triangular plate 53. When the water flow impacts the drainage cone 55, part of the water flow will flow into the connecting pipe 43 due to the guidance of the spiral groove 56. At this time, the area of ​​the water inlet end of the shell 41 will share the pressure brought by the water flow, forming a pressure reduction during the flow. The lifting assembly 2 includes a vertical plate 21, two first hydraulic rods 22 are fixedly installed at the top of the vertical plate 21, and movable plates 23 are fixedly installed at the telescopic ends of the two first hydraulic rods 22, and the two sides of the movable plates 23 are movably clamped in the vertical plate 21; The first hydraulic rod 22 increases its stroke, and can push the movable plate 23 upward and make it move upward in the vertical plate 21, driving the entire rotating assembly 3 to move upward, thereby cooperating with the screw rod 64 that is continuously rotated out; The rotating assembly 3 includes a horizontal bar 31, which is installed through the middle of the two movable plates 23. A track plate 32 is fixedly installed in the middle of the horizontal bar 31. Two racks 33 are slidably installed on the bottom side of the track plate 32. The left and right ends of the two racks 33 are fixedly connected with second hydraulic rods 34. The inner sides of the two racks 33 are meshed with gears 35. The gears 35 are rotatably installed on the bottom side of the track plate 32. The fixed ends of the four second hydraulic rods 34 are installed through the two movable plates 23. The four second hydraulic rods 34 work in tandem, with two extending and two shortening their travels, thereby driving the two symmetrical racks 33 to move and drive the gear 35 to rotate counterclockwise. At this time, the screw 64 will continuously rotate upward in the sealing plate 61, pushing the gear 35 to rotate clockwise, thereby cutting off the water flow in the housing 41. The valve assembly 4 includes a shell 41, which is fixedly mounted on the top of the support plate 11. The shell 41 is divided into a left water inlet end, a right water outlet end and a top control end. A connecting ring 42 is fixedly mounted on the outer edge of the right end of the shell 41 and the outer edge of the left fixed shaft 51. A connecting pipe 43 is fixedly connected to the back of the shell 41, an electric valve 44 is fixedly mounted at the middle position of the connecting pipe 43, and a limiting block 45 is fixedly mounted on the bottom of the shell 41; the left inner wall of the shell 41 is fixedly connected with the fixed shaft 51 and the triangular plate 53 in sequence, the left end of the connecting pipe 43 is fixedly connected to the water inlet end of the shell 41, and the other end is fixedly connected to the water outlet end of the shell 41; When the gate plate 65 rises, the electric valve 44 rotates and opens, so that the connecting pipe 43 can pass through. Part of the water flow will flow into the connecting pipe 43 due to the guidance of the spiral groove 56. At this time, the area at the water inlet end of the shell 41 will share the pressure brought by the water flow. Among them, the gate valve assembly 6 includes a sealing plate 61, which is fixedly installed at the top of the housing 41. The sealing plate 61 is divided into a bottom plate and a top plate. A plurality of bolts 62 are installed through between the bottom plate and the top plate. Threads are provided on the inner side of the sealing plate 61, and a screw rod 64 is threadedly connected to the inner side of the sealing plate 61. A rotating ring 63 and a gate plate 65 are respectively fixedly installed at the top and bottom of the screw rod 64; the top end of the screw rod 64 is fixedly connected to the bottom side of the gear 35. When the gate plate 65 seals the housing 41, it will abut against the limit block 45; When the screw rod 64 continuously screws out upward in the sealing plate 61, the gate plate 65 will move upward under the traction of the screw rod 64, and the blockage of the water inlet end and the water outlet end in the housing 41 can be cancelled. When the gate plate 65 moves downward and the electric valve 44 rotates to close, the water flow in the housing 41 can be gradually cut off by the gate plate 65; Among them, the buffer assembly 7 includes a movable ring 71. A plurality of first bent holes 72 are formed through the inside of the movable ring 71. A second spring 73 is fixedly connected to the top of the movable ring 71. The top of the second spring 73 is elastically connected to a fixed ring 74. A plurality of second bent holes 75 are formed through the inside of the fixed ring 74. The bending directions of the first bent holes 72 and the second bent holes 75 are opposite. The fixed ring 74 is fixedly sleeved on the outer edge of the screw rod 64; The backflow water flow will first squeeze the movable ring 71 and cause the second spring 73 to contract. Part of the water flow will go upward through the first bent holes 72, and then fill the upper part of the cavity of the housing 41 after passing through the second bent holes 75, and finally be blocked by the sealing plate 61. Because the bending pipelines of the first bent holes 72 and the second bent holes 75 are opposite, the pressure of the backflow water flow will be greatly reduced again, thereby protecting the entire gate valve assembly 6.

[0020] Working principle: When using the present invention, when the gate plate 65 is in a closed state with respect to the housing 41, the lifting assembly 2 and the rotating assembly 3 are started. The four second hydraulic rods 34 are linked and cooperate. Two of them extend and two shorten their strokes, thereby driving two symmetrical racks 33 to move, driving the gear 35 to rotate counterclockwise. At this time, the screw rod 64 will continuously screw out upward in the sealing plate 61. At the same time, the first hydraulic rod 22 increases its stroke, pushes the movable plate 23 upward and makes it move upward in the vertical plate 21, driving the entire rotating assembly 3 to also move upward, so as to cooperate with the continuously screwing out screw rod 64; The gate plate 65 will move upward under the traction of the screw rod 64 and cancel the blockage of the water inlet end and the water outlet end in the housing 41. While the gate plate 65 is rising, the electric valve 44 rotates and opens, enabling the connecting pipe 43 to be unobstructed. At this time, the water flow introduced into the convex elbow 52 will flow again due to the cancellation of the right-side blockage. The water flow will impact the three drainage cones 55, compressing the first spring 57. The round shaft 54 will also drive the drainage cone 55 to displace a certain distance to the right side of the triangular plate 53. When the water flow impacts the drainage cone 55, part of the water flow will flow into the connecting pipe 43 under the guidance of the spiral groove 56. At this time, in the area of the water inlet end of the housing 41, the pressure brought by the water flow will be shared, forming pressure reduction during the flow-through process; When it is necessary to cut off the water flow in the housing 41, rotate the gear 35 clockwise to push it. The lifting assembly 2 and the rotating assembly 3 will descend simultaneously, driving the gate plate 65 to move downward and closing the electric valve 44 by rotation. When the gate plate 65 gradually cuts off the water flow in the housing 41, part of the water flow will backflow upward. The backflowing water flow will first squeeze the movable ring 71 and cause the second spring 73 to contract. Part of the water flow will go upward through the first bent hole 72, then pass through the second bent hole 75 and fill the upper part of the cavity of the housing 41, and finally be blocked by the sealing plate 61. Because the bending pipelines of the first bent hole 72 and the second bent hole 75 are opposite, the pressure of the backflowing water flow will be significantly reduced again, thereby protecting the entire gate valve assembly 6.

[0021] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-pressure wear-resistant gate valve, comprising a rectangular plate (1), characterized in that, A plurality of support plates (11) are fixedly installed on the top of the rectangular plate (1). Lifting components (2) are fixedly installed on both sides of the plurality of support plates (11). Further included is a linkage buffer gate valve mechanism, which includes a rotating component (3). The rotating component (3) is fixedly installed in the middle of the lifting component (2). A valve component (4) is fixedly installed on the top of the plurality of support plates (11). A gate valve component (6) is fixedly installed on the inner top side of the valve component (4). A buffer component (7) is installed on the outer edge of the gate valve component (6); a pressure reducing component (5), which is installed on the left side inside the valve component (4). The pressure reducing component (5) includes two fixed shafts (51). Three convex bent pipes (52) are installed through between the two fixed shafts (51). A triangular plate (53) is installed on the right side of the three convex bent pipes (52). Three round shafts (54) are installed through the left side of the triangular plate (53). The left ends of the three round shafts (54) are fixedly connected with drainage cones (55). Spiral grooves (56) are formed on the outer surfaces of the three drainage cones (55). First springs (57) are sleeved on the outer edges of the three round shafts (54).

2. The high-pressure wear-resistant gate valve according to claim 1, wherein, The three convex bent pipes (52) are installed around between the two fixed shafts (51). The left sides of the three drainage cones (55) correspond to the right sides of the three convex bent pipes (52). The right ends of the three first springs (57) are elastically connected with the triangular plate (53). The outer edges of the three convex bent pipes (52) are supported by the support plates (11).

3. The high-pressure wear-resistant gate valve according to claim 1, characterized in that, The lifting component (2) includes a vertical plate (21). Two first hydraulic rods (22) are fixedly installed at the inner top end of the vertical plate (21). The telescopic ends of the two first hydraulic rods (22) are fixedly installed with a movable plate (23). The two sides of the movable plate (23) are movably clamped inside the vertical plate (21).

4. The high-pressure wear-resistant gate valve according to claim 3, characterized in that, The rotating component (3) includes a cross bar (31). The cross bar (31) is installed through the middle parts of the two movable plates (23). A track plate (32) is fixedly installed at the middle position of the cross bar (31). Two racks (33) are slidably installed on the bottom side of the track plate (32). Second hydraulic rods (34) are fixedly connected to the left and right ends of the two racks (33). A gear (35) is meshed inside the two racks (33).

5. The high-pressure wear-resistant gate valve according to claim 4, characterized in that, The gear (35) is rotatably installed on the bottom side of the track plate (32). The fixed ends of the four second hydraulic rods (34) are all installed through the two movable plates (23).

6. The high-pressure wear-resistant gate valve according to claim 5, characterized in that, The valve assembly (4) includes a housing (41), which is fixedly installed on the top of the support plate (11). The housing (41) is divided into a left water inlet end, a right water outlet end and a top control end. A connecting ring (42) is fixedly installed on the outer edge of the right end of the housing (41) and the outer edge of the left fixed shaft (51). A connecting pipe (43) is fixedly connected to the back of the housing (41). An electric valve (44) is fixedly installed at the middle position of the connecting pipe (43). A limiting block (45) is fixedly installed at the bottom of the housing (41).

7. The high-pressure wear-resistant gate valve according to claim 6, characterized in that, A fixed shaft (51) and a triangular plate (53) are sequentially and fixedly connected to the left inner wall of the housing (41). The left end of the connecting pipe (43) is fixedly connected to the water inlet end of the housing (41), and the other end is fixedly connected to the water outlet end of the housing (41).

8. A high-pressure wear-resistant gate valve according to claim 6, characterized in that, The gate valve assembly (6) includes a sealing plate (61), which is fixedly installed at the top of the housing (41). The sealing plate (61) is divided into a bottom plate and a top plate. A plurality of bolts (62) are installed through between the bottom plate and the top plate. Threads are provided on the inner side of the sealing plate (61). A screw rod (64) is threadedly connected to the inner side of the sealing plate (61). A rotating ring (63) and a gate plate (65) are respectively fixedly installed at the top and bottom of the screw rod (64).

9. The high-pressure wear-resistant gate valve according to claim 8, wherein, The top end of the screw rod (64) is fixedly connected to the bottom side of the gear (35). When the gate plate (65) seals the housing (41), it will abut against the limiting block (45).

10. A high-pressure wear-resistant gate valve according to claim 9, characterized in that, The buffer assembly (7) includes a movable ring (71). A plurality of first bent holes (72) are formed through the inside of the movable ring (71). A second spring (73) is fixedly connected to the top of the movable ring (71). The top of the second spring (73) is elastically connected to a fixed ring (74). A plurality of second bent holes (75) are formed through the inside of the fixed ring (74). The bending directions of the first bent holes (72) and the second bent holes (75) are opposite. The fixed ring (74) is fixedly sleeved on the outer edge of the screw rod (64).

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