Gate valve with anti-jamming structure

Abstract

This utility model relates to the field of gate valve technology, specifically to a gate valve with an anti-jamming structure. It includes a valve seat and a valve plate disposed within the valve seat. The valve seat has an internal chamber with water passage holes communicating with the outside on both the front and rear walls of the chamber. A V-shaped groove is provided on the bottom wall of the internal chamber, and a sand-flowing hole is provided on the bottom wall of the V-shaped groove. A conical plate is integrally formed at the bottom of the valve plate, and a cutting blade is fixedly installed at the bottom end of the conical plate, with the cutting blade engaging with the sand-flowing hole. A debris-blocking assembly for blocking impurities is provided at the water inlet end of the valve seat. The debris-blocking assembly includes a rectangular frame detachably installed at the water inlet end of the valve seat, and two symmetrical mesh blocking plates are disposed within the rectangular frame. This utility model effectively prevents the gate valve from jamming due to impurity accumulation, ensuring normal valve closure.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and more specifically, to a gate valve with an anti-jamming structure. Background Technology

[0002] Gate valves are a common type of valve. Their working principle is to control the flow of fluid in a pipeline by raising and lowering a gate. However, in actual use, existing gate valves often suffer from gate jamming due to various factors, which seriously affects the normal operation of the valve and the stability of the entire pipeline system.

[0003] If various impurities accumulate at the bottom of the gate valve during use, and the gate valve continues to descend, it may cause the impurities to be clamped onto the valve seat, resulting in the gate valve jamming and preventing it from closing properly.

[0004] Patent CN107781440A discloses a flat gate valve, belonging to the field of oilfield production equipment. The flat gate valve includes a valve body, a gate, a lead screw, and a connecting rod. The gate is housed within the valve body. The connecting rod is threadedly connected to the gate, with its length parallel to the gate's surface. The lead screw has a through hole along its length, and is threaded onto the connecting rod. After closing the flat gate valve, the connecting rod is rotated to separate it from the valve. This invention connects the gate and lead screw via a connecting rod, with both the connecting rod and the gate and lead screw being threaded. After removing the connecting rod, the flat gate valve is difficult to open or close, solving the problem of easily opened flat gate valves in related technologies, allowing criminals to easily open them by rotating the handwheel and steal crude oil from oilfield pipelines, resulting in weak anti-theft performance. This invention achieves a stronger anti-theft performance for the flat gate valve.

[0005] While this technical solution has its advantages, currently, if the gate valve within most gate valves jams, it not only affects the normal transport capacity of the pipeline system, leading to production interruptions and increasing production costs for enterprises, but also, in emergency situations where it is necessary to quickly cut off fluid flow to prevent the accident from escalating, a gate valve that cannot operate normally may cause serious safety accidents. Therefore, we propose a gate valve with an anti-jamming structure. Utility Model Content

[0006] The purpose of this invention is to provide a gate valve with an anti-jamming structure to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A gate valve with an anti-jamming structure includes a valve seat and a valve plate disposed within the valve seat. The valve seat has an internal chamber, and water passage holes communicating with the outside are provided on both the front and rear side walls of the internal chamber. A V-shaped groove is provided on the bottom wall of the internal chamber, and a sand-flowing hole is provided on the bottom wall of the V-shaped groove. A conical plate is integrally formed on the bottom of the valve plate, and a cutting blade is fixedly installed at the bottom end of the conical plate. The cutting blade is inserted into the sand-flowing hole. A debris-blocking component for blocking impurities is provided at the water inlet end of the valve seat.

[0009] Preferably, the cross-section of the V-groove is V-shaped, and the dimensions of the tapered plate are adapted to the dimensions of the V-groove.

[0010] Preferably, sealing gaskets are embedded in the left and right side walls of the V-shaped groove, and after the valve plate is closed, the bottom surface of the conical plate is attached to the sealing gaskets.

[0011] This setting improves the sealing effect and makes leakage less likely.

[0012] Preferably, the quicksand hole is vertically oriented, and the cutting blade moves downward to cut off the waste stuck in the V-shaped groove.

[0013] Preferably, an external discharge hole is provided on the bottom wall of the quicksand hole, and the external discharge hole is inclined downward at 45 degrees to 60 degrees;

[0014] This feature allows impurities entering the quicksand hole to be discharged downstream through the external discharge hole, further preventing jamming.

[0015] Preferably, the garbage blocking assembly includes a rectangular frame that can be detachably installed at the water inlet end of the valve seat, and two symmetrical mesh blocking plates are provided in the rectangular frame.

[0016] This feature utilizes a mesh baffle to block impurities, preventing them from entering the valve seat and causing jamming.

[0017] Preferably, a fixing frame is fixedly installed on both the front and rear ends of the rectangular frame, and the fixing frame is detachably installed on the side of the valve seat by a plurality of fastening screws.

[0018] Preferably, a central flow channel is provided at the center of the rectangular frame, and two symmetrical inner limiting frames are fixedly installed on the inner wall of the central flow channel. The mesh blocking plate is detachably installed on the corresponding inner limiting frame by multiple fastening screws, and the positions of the through holes in the two mesh blocking plates are staggered.

[0019] This feature facilitates the fixing, installation, and removal of the mesh barrier.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model, through the design of V-groove, conical plate, cutting blade, and sand-flowing hole, allows the conical plate to cooperate with the V-groove when the valve plate descends. The cutting blade can cut off the debris stuck in the V-groove, preventing impurities from blocking the valve plate from closing. This effectively prevents the gate from jamming due to the accumulation of impurities and ensures the normal closure of the valve.

[0022] 2. This utility model, by embedding sealing gaskets in the left and right side walls of the V-shaped groove, allows the bottom surface of the conical plate to fit tightly against the sealing gaskets after the valve plate is closed, thereby enhancing the sealing between the valve plate and the valve seat, effectively preventing fluid leakage, and ensuring the stable operation of the pipeline system.

[0023] 3. This utility model, by setting a detachable debris blocking component installed at the water inlet end of the valve seat, utilizes mesh blocking plates with symmetrical and staggered through-hole positions within a rectangular frame to effectively block impurities entering the valve seat, thereby reducing the amount of impurities entering the valve seat and reducing the risk of gate jamming from the source. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0027] Figure 4 This is the second partial structural schematic diagram of the present utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Valve seat; 10. Inner chamber; 11. Water passage hole; 12. V-groove; 13. Sealing gasket; 14. Flow sand hole; 15. External drain hole;

[0030] 2. Valve plate; 20. Conical plate; 21. Cutting blade;

[0031] 3. Waste blocking assembly; 30. Rectangular frame; 301. Fixing frame; 31. Central flow channel; 32. Inner limit frame; 33. Mesh blocking plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-4 This utility model provides a technical solution: a gate valve with an anti-jamming structure, including a valve seat 1 and a valve plate 2 disposed in the valve seat 1. The valve plate 2 is driven by a corresponding transmission component. The valve seat 1 has an inner chamber 10 inside. Water passage holes 11 connected to the outside are provided on the front and rear side walls of the inner chamber 10. A V-shaped groove 12 is provided on the bottom wall of the inner chamber 10. A sand-flowing hole 14 is provided on the bottom wall of the V-shaped groove 12. A conical plate 20 is integrally formed at the bottom of the valve plate 2. A cutting blade 21 is fixedly installed at the bottom end of the conical plate 20. The cutting blade 21 is inserted and engaged with the sand-flowing hole 14. The sand-flowing hole 14 is vertically arranged. The downward movement of the cutting blade 21 hinders the downward movement of the valve plate 2, making the movement of the valve plate 2 in the valve seat 1 smoother and effectively preventing the gate valve from jamming due to the accumulation of impurities.

[0034] like Figure 2 As shown, the V-groove 12 has a V-shaped cross-section, and the size of the conical plate 20 is matched with the size of the V-groove 12, so that when the valve plate 2 descends and closes, the conical plate 20 can be precisely embedded in the V-groove 12. The two fit together tightly, providing guidance for the movement of the valve plate 2, and also helping to concentrate impurities for the cutting blade 21 to process, thus enhancing the stability and effectiveness of the anti-jamming structure. In addition, after the cutting blade 21 cuts the impurities, the two inclined surfaces of the conical plate 20 can also push the impurities cut into two pieces to both sides, further ensuring that the impurities will not block the bottom of the valve plate 2, thus achieving the anti-jamming effect.

[0035] like Figure 2 As shown, sealing gaskets 13 are embedded in the left and right side walls of the V-shaped groove 12. After the valve plate 2 is closed, the bottom surface of the conical plate 20 is attached to the sealing gasket 13. The elastic deformation of the sealing gasket 13 fills the gap, so that a tight sealing structure is formed between the valve plate 2 and the valve seat 1, which effectively prevents fluid from leaking from the connection between the valve plate 2 and the valve seat 1, improves the sealing performance of the gate valve, and ensures the safe operation of the pipeline system.

[0036] like Figure 2As shown, an external discharge hole 15 is provided on the bottom wall of the quicksand hole 14. The external discharge hole 15 is set at a downward inclination of 45 degrees to 60 degrees, so that impurities entering the quicksand hole 14, such as small impurities and sand, can be discharged more smoothly outward through the external discharge hole 15 to the downstream pipeline, reducing impurity residue, further reducing the risk of gate valve jamming, and ensuring stable operation of the gate valve.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, the inlet end of the valve seat 1 is provided with a debris blocking component 3 for blocking impurities. The debris blocking component 3 includes a rectangular frame 30 that can be detachably installed at the inlet end of the valve seat 1. The rectangular frame 30 is provided with two symmetrical mesh blocking plates 33, which can effectively intercept the impurities carried in the fluid before it enters the valve seat 1, reduce the number of impurities entering the inner cavity 10 of the valve seat 1, reduce the possibility of the valve plate 2 getting stuck due to impurities from the source, protect the internal structure of the gate valve, and extend its service life.

[0038] like Figure 4 As shown, a fixing frame 301 is fixedly installed on both the front and rear ends of the rectangular frame 30. The fixing frame 301 is detachably installed on the side of the valve seat 1 by multiple fastening screws, so that the connection between the garbage blocking assembly 3 and the valve seat 1 is firm and reliable. This facilitates quick disassembly and installation when it is necessary to clean impurities or replace the mesh blocking plate 33, improves maintenance convenience, and ensures that the impurity blocking function continues to be effective.

[0039] like Figure 4 As shown, a central flow channel 31 is provided at the center of the rectangular frame 30. Two symmetrical inner limit frames 32 are fixedly installed on the inner wall of the central flow channel 31. The mesh baffle plate 33 is detachably installed on the corresponding inner limit frame 32 by multiple fastening screws. The positions of the through holes in the two mesh baffle plates 33 are staggered, which not only makes the installation and positioning of the mesh baffle plate 33 more accurate and the fixation more stable, but also makes it convenient for the staff to quickly disassemble and replace the mesh baffle plate 33. At the same time, the staggered design of the through holes can more comprehensively intercept impurities of different sizes and shapes, improve the impurity blocking effect, and better protect the internal structure of the gate valve.

[0040] When using the gate valve with anti-jamming structure of this utility model, first install the rectangular frame 30 of the garbage blocking component 3 on the water inlet end of the valve seat 1 through the fixing frame 301 and fastening screws, and ensure that the mesh blocking plate 33 is installed on the inner limit frame 32 and the through hole positions are staggered, thus completing the initial impurity interception structure installation.

[0041] Next, the valve seat 1 is connected to the pipeline system, so that the water passage 11 is connected to the corresponding pipeline. When the valve is opened, the valve plate 2 is driven to rise. At this time, the fluid enters the valve seat 1 and flows out after being filtered by the central flow channel 31 and the mesh baffle plate 33. When the valve is closed, the valve plate 2 descends, the conical plate 20 is embedded in the V-groove 12, and the cutting blade 21 cuts the impurities stuck in the V-groove 12 to prevent impurities from blocking the descent of the valve plate 2. In addition, small impurities that enter the quicksand hole 14 can be discharged through the quicksand hole 14 and the external discharge hole 15.

[0042] During routine maintenance, the fixing frame 301 can be removed by unscrewing the fastening screws, the rectangular frame 30 can be removed to clean or replace the mesh baffle plate 33, and tools can also be used to clean the impurities in the quicksand hole 14 and the external discharge hole 15.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gate valve with an anti-jamming structure, comprising a valve seat (1) and a valve plate (2) disposed within the valve seat (1), characterized in that: The valve seat (1) is provided with an inner chamber (10). Water passage holes (11) that communicate with the outside are provided on the front and rear side walls of the inner chamber (10). A V-shaped groove (12) is provided on the bottom wall of the inner chamber (10). A sand-flowing hole (14) is provided on the bottom wall of the V-shaped groove (12). A conical plate (20) is integrally formed on the bottom of the valve plate (2). A cutting blade (21) is fixedly installed at the bottom end of the conical plate (20). The cutting blade (21) and the sand-flowing hole (14) are inserted into each other. A garbage blocking component (3) for blocking impurities is provided at the water inlet end of the valve seat (1).

2. The gate valve with anti-jamming structure according to claim 1, characterized in that: The V-shaped groove (12) has a V-shaped cross section, and the size of the tapered plate (20) is adapted to the size of the V-shaped groove (12).

3. The gate valve with anti-jamming structure according to claim 1, characterized in that: Sealing gaskets (13) are embedded in the left and right sides of the V-shaped groove (12). After the valve plate (2) is closed, the bottom surface of the conical plate (20) is attached to the sealing gasket (13).

4. The gate valve with anti-jamming structure according to claim 1, characterized in that: The quicksand hole (14) is set vertically, and the cutting blade (21) moves downward to cut the garbage stuck in the V-groove (12).

5. The gate valve with anti-jamming structure according to claim 1, characterized in that: The bottom wall of the quicksand hole (14) is provided with an external discharge hole (15), which is inclined downward at 45 degrees to 60 degrees.

6. The gate valve with anti-jamming structure according to claim 1, characterized in that: The garbage blocking assembly (3) includes a rectangular frame (30) that can be detachably installed at the water inlet end of the valve seat (1), and two symmetrical mesh blocking plates (33) are provided in the rectangular frame (30).

7. The gate valve with anti-jamming structure according to claim 6, characterized in that: Fixed frames (301) are fixedly installed on both the front and rear ends of the rectangular frame (30). The fixed frames (301) are detachably installed on the side of the valve seat (1) by multiple fastening screws.

8. The gate valve with anti-jamming structure according to claim 7, characterized in that: A central flow channel (31) is provided at the center of the rectangular frame (30). Two symmetrical inner limit frames (32) are fixedly installed on the inner wall of the central flow channel (31). The mesh blocking plate (33) is detachably installed on the corresponding inner limit frame (32) by multiple fastening screws. The positions of the through holes in the two mesh blocking plates (33) are staggered.

Images