High-pressure wedge gate valve

Abstract

The utility model relates to the technical field of valves, in particular to a high-pressure wedge gate valve which can prevent dust from falling off and lubricating oil from being dried, guarantees smooth opening and closing and is convenient to use. Comprising a valve body, a valve plate, connecting assemblies, a switch assembly, a guide assembly and a supporting assembly, a valve cavity perpendicular to a flow channel is formed in the valve body, the valve plate is located in a wedge-type valve cavity, the connecting assemblies are located on the left side and the right side of the valve cavity of the valve body respectively and connected with a pipeline, and the switch assembly is installed at the top of the valve body and connected with the valve plate. A guide assembly is cooperatively installed in the valve plate and the valve cavity, and a supporting assembly is installed at the bottom of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-pressure wedge-type gate valve. Background Art

[0002] A gate valve is a valve in which the gate moves in the vertical direction of the valve stem. A gate valve can only be used for full opening and full closing in a pipeline, and cannot be used for regulation or throttling. A gate valve is used as a cut-off medium, wherein the medium includes water, oil, and steam. During operation, a certain external force is applied to the handwheel to drive the valve stem to transmit the gate plate, so that the gate plate is pressed against the bottom of the valve body. The sealing is ensured by the cooperation between the sealing bevel of the gate plate and the valve body. A wedge-type gate valve proposed in prior art announcement number CN212004331U includes a valve body and a valve cover, a valve cover is provided above the valve body, a plurality of studs are provided on the outer inner part of the valve body and the valve cover, a sealing ring is tightly fitted on the inner inner part of the valve body and the valve cover, the upper and lower inner walls of the top block are rotatably connected to the sleeve through bearings, the inner wall of the sleeve is connected to the screw thread, and a turntable is fixed on the outer wall of the sleeve. However, during daily use, the gate valve may remain in the open state for a long time. When the gate valve is in the open state, a long section of the valve stem will be located above the handwheel; the thread is exposed to the air, and in order to ensure that the handwheel and the valve stem can rotate smoothly with each other, lubricating oil needs to be placed in the gap. If exposed to the air for a long time, dust and impurities will enter the gap, making it difficult to rotate the handwheel. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a high-pressure wedge gate valve which can prevent dust from falling and lubricating oil from drying out, ensures smooth opening and closing, and is easy to use.

[0004] The utility model relates to a high-pressure wedge-type gate valve, comprising a valve body, a valve plate, a connecting assembly, a switch assembly, a guide assembly and a support assembly. A valve cavity perpendicular to the flow channel is opened in the valve body, the valve plate is located in the wedge-type valve cavity, the connecting assemblies are respectively located on the left and right sides of the valve cavity of the valve body and are connected to the pipeline, a switch assembly is installed on the top of the valve body, the switch assembly is connected to the valve plate, the valve plate and the valve cavity are matched with a guide assembly, and the bottom of the valve body is installed; the valve body is installed on the pipeline through the connecting assembly, and the valve body is supported by the support assembly to ensure stability during use, the valve plate can be driven to move in the valve cavity through the switch assembly to switch the pipeline, the guide assembly can guide and limit the valve plate to ensure the sealing of the switch, the switch assembly can prevent dust from falling and lubricating oil from drying, and can ensure smooth switching and easy use.

[0005] Preferably, the connecting assembly includes two arc-shaped cover plates, two conveying pipes and two connecting flanges. The two arc-shaped cover plates are respectively installed on the left and right sides of the valve cavity of the valve body. The conveying pipes are connected to the arc-shaped cover plates. The other end of the conveying pipes is installed with a connecting flange, and a sealing groove is provided on the connecting flange. The connecting flange is connected to the pipeline through the connecting flange, and the flow rate of the liquid conveyed by the conveying pipe can be slowed down through the arc-shaped cover plates to avoid excessive impact force.

[0006] Preferably, the switch assembly includes a sealing gasket, a drive box, a cover plate, multiple fixing screws, a drive box, a screw rod, a bevel gear, a gear sleeve, a rotating shaft, a drive bevel gear, a support rod and a runner. The sealing gasket is installed at the bottom of the valve chamber, the drive box is installed on the top of the valve body, the four corners of the cover plate are installed on the top of the drive box by fixing screws, the bottom of the cover plate and the drive box are equipped with a sealing ring, the drive box is installed on the top of the cover plate, the screw rod is rotatably installed in the middle of the cover plate, a lifting circular hole is opened on the upper part of the valve plate, the gear sleeve is fixedly installed on the top of the lifting circular hole, the screw rod is screwed in the middle of the gear sleeve, and the top of the screw rod passes through the drive box and is equipped with a bevel gear. The rotating shaft is rotatably installed inside the driving box, and a driving bevel gear is installed on the outer wall of the rotating shaft. The driving bevel gear is meshed with the bevel gear. The right end of the rotating shaft is rotatably installed on the support rod. The bottom of the support rod is installed on the top of the cover plate, and a wheel is installed on the right side of the rotating shaft; the rotating wheel drives the rotating shaft to rotate, and the stability of the rotating shaft during rotation can be ensured by the support rod. The rotating shaft drives the bevel gear to rotate through the driving bevel gear, and the bevel gear drives the screw rod to rotate. The screw rod cooperates with the gear sleeve to drive the valve plate to move in the valve cavity to switch the pipeline. This structure can prevent dust from falling and lubricating oil from drying, and can ensure smooth switching and easy use.

[0007] Preferably, the guide assembly includes two guide rods, two limit guide sliders and two groups of second limit guide sliders, two guide rods are fixedly installed at the front and rear ends of the bottom of the cover plate, and two guide circular holes matching the guide rods are provided on the front and rear sides of the top of the valve plate, and the guide rods are in sliding contact with the guide circular holes, and the two limit guide sliders are respectively installed at the front and rear ends of the valve cavity, and sealing guide grooves matching the limit guide sliders are provided at the front and rear ends of the valve plate, and second sealing guide grooves are provided at the left and right ends on the front and rear sides of the valve cavity, and second limit guide sliders matching the second sealing guide grooves are installed on the left and right sides of the front and rear sides of the valve plate; when the valve plate moves upward, the guide rods enter the guide circular holes to guide the valve plate, and at the same time, the limit guide slider on the side wall of the valve cavity moves in the sealing guide groove of the valve plate, and the second limit guide slider on the valve plate moves in the second sealing guide groove, making the valve plate move more stably and smoothly, thereby ensuring sealing.

[0008] Preferably, the support assembly includes two legs, two base plates and multiple connecting rods. The two legs are fixedly installed at the front and rear ends of the bottom of the valve body. The bottom of the legs is fixedly installed with the base plate. A fixing hole is opened on 0.3. Multiple connecting rods are respectively installed on the left and right sides of the bottom of the cover plate, and the bottom of the connecting rod is in contact with the bottom of the drive box. After the connection with the pipeline is completed, the valve body is supported by the legs and the base plate to ensure stability during use. The cover plate is easily supported and positioned through the connecting rod to improve the structural strength.

[0009] Preferably, the left and right ends of the valve plate are provided with arc-shaped grooves, and a plurality of diverter plates are installed in the arc-shaped grooves; through the multiple diverter plates, when the valve plate is closed, the pressure brought by the water in contact with the valve plate can be affected by the shape of the diverter plate and decomposed more into the vertical direction, thereby reducing the horizontal pressure and avoiding the problem that the valve plate is easily damaged due to excessive horizontal pressure caused by water pressure during use.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the valve body is installed on the pipeline through the connecting assembly, the valve body is supported by the supporting assembly to ensure stability during use, the valve plate can be driven to move in the valve cavity through the switching assembly to switch the pipeline, the guide assembly can guide and limit the valve plate to ensure the sealing of the switch, the switch assembly can prevent dust from falling and lubricating oil from drying out, and can ensure smooth switching and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is an axonometric structural diagram of the present utility model;

[0013] Figure 3 It is a schematic diagram of the lower three-dimensional structure of the utility model;

[0014] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;

[0015] Figure 5 It is a front cross-sectional structural schematic diagram of the utility model;

[0016] Figure 6 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Markings in the accompanying drawings: 1. Valve body; 2. Support leg; 3. Bottom plate; 4. Arc cover plate; 5. Delivery pipe; 6. Connecting flange; 7. Valve plate; 8. Sealing gasket; 9. Drive box; 10. Cover plate; 11. Fixing screw; 12. Drive box; 13. Screw; 14. Bevel gear; 15. Gear sleeve; 16. Rotating shaft; 17. Driving bevel gear; 18. Support rod; 19. Rotor; 20. Connecting rod; 21. Guide rod; 22. Limit guide slider; 23. Second limit guide slider; 24. Diverter plate. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0019] like Figures 1 to 6As shown, a valve cavity perpendicular to the flow channel is provided in the valve body 1, a valve plate 7 is located in the wedge-shaped valve cavity, two arc-shaped cover plates 4 are respectively installed on the left and right sides of the valve cavity of the valve body 1, a delivery pipe 5 is connected to the arc-shaped cover plate 4, and a connecting flange 6 is installed at the other end of the delivery pipe 5. A sealing groove is provided on the connecting flange 6, a sealing gasket 8 is installed at the bottom of the valve cavity, a drive box 9 is installed on the top of the valve body 1, and the four corners of the cover plate 10 are installed on the top of the drive box 9 by fixing screws 11. The bottom of the cover plate 10 is connected to the drive box 9. The sealing ring is installed in conjunction with the drive box 12, which is installed on the top of the cover plate 10. The screw rod 13 is rotatably installed in the middle of the cover plate 10. The upper part of the valve plate 7 is provided with a lifting hole. The gear sleeve 15 is fixedly installed on the top of the lifting hole. The screw rod 13 is screwed in the middle of the gear sleeve 15. The top of the screw rod 13 passes through the drive box 12 and is installed with a bevel gear 14. The rotating shaft 16 is rotatably installed inside the drive box 12. The driving bevel gear 17 is installed on the outer wall of the rotating shaft 16. The driving bevel gear 17 is meshed with the bevel gear 14, and the right end of the rotating shaft 16 rotates. It is installed on the support rod 18, the bottom of the support rod 18 is installed on the top of the cover plate 10, and a runner 19 is installed on the right side of the rotating shaft 16. Two guide rods 21 are fixedly installed on the front and rear ends of the bottom of the cover plate 10. Two guide circular holes matching the guide rods 21 are opened on the front and rear sides of the top of the valve plate 7, and the guide rods 21 are in sliding contact with the guide circular holes. Two limit guide sliders 22 are respectively installed on the front and rear ends of the valve cavity, and sealing guide grooves matching the limit guide sliders 22 are opened on the front and rear ends of the valve plate 7. Second sealing guide grooves are opened on the left and right ends of the front and rear sides of the valve cavity. Second limit guide sliders 23 matching the second sealing guide grooves are installed on the left and right sides of the front and rear sides of the valve plate 7. The two legs 2 are fixedly installed on the front and rear ends of the bottom of the valve body 1. The bottom of the leg 2 is fixedly installed with the bottom plate 3, and a fixing hole is opened on 0.3. A plurality of connecting rods 20 are respectively installed on the left and right sides of the bottom of the cover plate 10. The bottom of the connecting rod 20 contacts the bottom of the drive box 9. The left and right ends of the valve plate 7 are provided with arc grooves, and a plurality of diverter plates 24 are installed in the arc grooves;

[0020] It is connected to the pipeline through the connecting flange 6, and the curved cover plate 4 can slow down the flow rate of the liquid transported by the delivery pipe 5 to avoid excessive impact force. After the connection with the pipeline is completed, the valve body 1 is supported by the support legs 2 and the bottom plate 3 to ensure stability during use. The rotating wheel 19 drives the rotating shaft 16 to rotate, and the stability of the rotating shaft 16 during rotation can be ensured by the support rod 18. The rotating shaft 16 drives the bevel gear 17 to rotate, and the bevel gear 14 drives the screw rod 13 to rotate. The screw rod 13 cooperates with the gear sleeve 15 to drive the valve plate 7 to move in the valve cavity to switch the pipeline. This structure can prevent dust from falling and lubricating oil from drying, and can ensure smooth switching and easy use. The valve plate When 7 moves upward, the guide rod 21 enters the guide circular hole to guide the valve plate 7. At the same time, the limiting guide slider 22 on the side wall of the valve cavity moves in the sealing guide groove of the valve plate 7, and the second limiting guide slider 23 on the valve plate 7 moves in the second sealing guide groove, so that the movement of the valve plate 7 is more stable and smooth, ensuring the sealing. The connecting rod 20 is used to facilitate the support and positioning of the cover plate 10 to improve the structural strength. When the valve plate 7 is closed, the pressure brought by the water in contact with the valve plate 7 can be affected by the shape of the diverter plate 24 and is more decomposed into the vertical direction, reducing the horizontal pressure and avoiding the problem that the valve plate 7 is easily damaged due to excessive horizontal pressure caused by water pressure during use.

[0021] like Figures 1 to 6 As shown, a high-pressure wedge gate valve of the utility model is connected to the pipeline through the connecting flange 6 during operation. The arc cover plate 4 can slow down the flow rate of the liquid transported by the delivery pipeline 5 to avoid excessive impact force. After the connection with the pipeline is completed, the valve body 1 is supported by the support legs 2 and the bottom plate 3. The rotating wheel 19 drives the rotating shaft 16 to rotate. The support rod 18 can ensure the stability of the rotating shaft 16 during rotation. The rotating shaft 16 drives the bevel gear 14 to rotate by driving the bevel gear 17. The bevel gear 14 drives the screw rod 13 to rotate. The screw rod 13 cooperates with the gear sleeve 15. , driving the valve plate 7 to move in the valve cavity to switch the pipeline. When the valve plate 7 moves upward, the guide rod 21 enters the guide circular hole to guide the valve plate 7. At the same time, the limiting guide slider 22 on the side wall of the valve cavity moves in the sealing guide groove of the valve plate 7, and the second limiting guide slider 23 on the valve plate 7 moves in the second sealing guide groove, so that the movement of the valve plate 7 is more stable and smooth. Through multiple diverter plates 24, when the valve plate 7 is closed, the pressure brought by the water in contact with the valve plate 7 can be affected by the shape of the diverter plate 24 and more decomposed into the vertical direction, reducing the horizontal pressure.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-pressure wedge gate valve, characterized in that: The utility model comprises a valve body (1), a valve plate (7), a connecting assembly, a switch assembly, a guide assembly and a support assembly. A valve cavity perpendicular to the flow channel is provided in the valve body (1). The valve plate (7) is located in the wedge-shaped valve cavity. The connecting assemblies are respectively located on the left and right sides of the valve cavity of the valve body (1) and are connected to the pipeline. A switch assembly is installed on the top of the valve body (1). The switch assembly is connected to the valve plate (7). The valve plate (7) is matched with the valve cavity to install a guide assembly. The bottom of the valve body (1) is installed with a support assembly.

2. A high-pressure wedge gate valve according to claim 1, characterized in that: The connecting assembly comprises two arc-shaped cover plates (4), two delivery pipes (5) and two connecting flanges (6). The two arc-shaped cover plates (4) are respectively installed on the left and right sides of the valve cavity of the valve body (1). The arc-shaped cover plates (4) are connected to the delivery pipes (5). The other end of the delivery pipes (5) is installed with a connecting flange (6). A sealing groove is provided on the connecting flange (6).

3. A high-pressure wedge gate valve according to claim 1, characterized in that: The switch assembly comprises a sealing rubber pad (8), a driving box (9), a cover plate (10), a plurality of fixing screws (11), a driving box (12), a screw rod (13), a bevel gear (14), a gear sleeve (15), a rotating shaft (16), a driving bevel gear (17), a supporting rod (18) and a rotating wheel (19). The sealing rubber pad (8) is installed at the bottom of the valve cavity, the driving box (9) is installed at the top of the valve body (1), the four corners of the cover plate (10) are installed on the top of the driving box (9) through fixing screws (11), the bottom of the cover plate (10) and the driving box (9) are equipped with a sealing ring, the driving box (12) is installed at the top of the cover plate (10), and the screw rod (13) rotates. The valve plate (7) is rotatably mounted on the middle of the cover plate (10), the upper part of the valve plate (7) is provided with a lifting circular hole, the gear sleeve (15) is fixedly mounted on the top of the lifting circular hole, the screw rod (13) is screwed on the middle of the gear sleeve (15), the top of the screw rod (13) passes through the driving box (12) and is equipped with a bevel gear (14), the rotating shaft (16) is rotatably mounted inside the driving box (12), the outer wall of the rotating shaft (16) is equipped with a driving bevel gear (17), the driving bevel gear (17) is meshed with the bevel gear (14), the right end of the rotating shaft (16) is rotatably mounted on the support rod (18), the bottom of the support rod (18) is equipped on the top of the cover plate (10), and a runner (19) is installed on the right side of the rotating shaft (16).

4. A high-pressure wedge gate valve according to claim 3, characterized in that: The guide assembly includes two guide rods (21), two position-limiting guide sliders (22) and two groups of second position-limiting guide sliders (23). The two guide rods (21) are fixedly installed at the front and rear ends of the bottom of the cover plate (10). Two guide circular holes matching the guide rods (21) are provided on the front and rear sides of the top of the valve plate (7). The guide rods (21) are in sliding contact with the guide circular holes. The two position-limiting guide sliders (22) are respectively installed at the front and rear ends of the valve cavity. The front and rear ends of the valve plate (7) are provided with sealing guide grooves matching the position-limiting guide sliders (22). The left and right ends of the front and rear sides of the valve cavity are provided with second sealing guide grooves. The left and right sides of the front and rear sides of the valve plate (7) are provided with second position-limiting guide sliders (23) matching the second sealing guide grooves.

5. A high-pressure wedge gate valve according to claim 3, characterized in that: The support assembly comprises two legs (2), two base plates (3) and a plurality of connecting rods (20). The two legs (2) are fixedly mounted at the front and rear ends of the bottom of the valve body (1). The bottom of the legs (2) is fixedly mounted with the base plate (3), and a fixing hole is provided on the base plate. A plurality of connecting rods (20) are respectively mounted on the left and right sides of the bottom of the cover plate (10), and the bottom of the connecting rod (20) contacts the bottom of the drive box (9).

6. A high-pressure wedge gate valve according to claim 1, characterized in that: The valve plate (7) is also provided with arc-shaped grooves at both left and right ends, and a plurality of diverter plates (24) are installed in the arc-shaped grooves.

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