An improved gate valve with reduced component wear
The design of the rotating plate and the elastic sealing block solves the problem of severe wear in gate valves, achieving flexible sealing and efficient transmission, and extending the service life of gate valves.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG GAOHENG MACHINERY CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional gate valves suffer severe wear due to direct metal-to-metal contact during vertical movement of the gate, and particles in the medium can easily become embedded in the friction surface, increasing frictional resistance and the risk of internal leakage.
A rotating plate structure is adopted to replace vertical sliding. The flexible seal is formed between the elastic material blocking block and the flow hole. Opening and closing are achieved by rotating the plate around a fixed axis, reducing hard contact. Combined with the design of inclined baffle and bending plate, the transmission efficiency is improved.
It reduces wear on gate valve components, extends service life, maintains sealing, prevents jamming, and reduces operating torque requirements.
Smart Images
Figure CN224497438U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gate valve technology, specifically relating to an improved gate valve that can reduce component wear. Background Technology
[0002] Gate valves, also known as sluice gate valves or gate valves, are a widely used type of valve, primarily used for shut-off in pipelines. The characteristic of a gate valve is that its closing element (gate) moves vertically along the centerline of the flow path, thus achieving the function of opening or closing. Traditional gate valves mostly use a metal gate (such as a wedge gate or parallel gate) that moves vertically to achieve opening and closing. The core problems are: the gate needs to fit tightly against the inner wall of the valve body to ensure sealing; repeated up-and-down movement causes direct metal-to-metal contact, leading to scratches; and over long-term use, the gap increases, causing internal leakage; particles in the medium can easily become embedded in the friction surface, accelerating wear or jamming the gate; and the gate guide groove design is prone to deformation of metal components due to uneven loading, further increasing frictional resistance. Therefore, there is an urgent need for an improved gate valve that can reduce component wear. Utility Model Content
[0003] To address the aforementioned problems in the existing technology, this utility model provides an improved gate valve that can reduce component wear, featuring reduced wear, extended service life, and high practicality.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an improved gate valve that reduces component wear, comprising a valve tube and a drive rod. The drive rod is disposed on the top surface of the valve tube, and a push rod is fixed to the lower end of the drive rod. The push rod can be driven to move up and down inside the valve tube. An inclined baffle is fixed to the inner wall of the valve tube, and a flow hole is disposed in the middle of the inclined baffle. A rotating plate is disposed on one side of the inclined baffle. A sealing block of elastic material is fixed to the side wall of the rotating plate. The sealing block is embedded inside the flow hole. One end of the rotating plate is sleeved on the outside of the fixed shaft of the inner wall of the valve tube through a sleeve. A bent plate is fixed to the other end of the rotating plate. An adjusting groove is disposed in the middle of the bent plate. The push rod passes through the adjusting groove and can drive the rotating plate to rotate around the fixed shaft, thereby realizing the opening and closing control of the flow hole by the sealing block.
[0005] As a preferred technical solution of the improved gate valve of this utility model that can reduce component wear, the lower end outer wall of the push rod is fixed with a first baffle and a second baffle, the first baffle and the second baffle are respectively located on the upper and lower sides of the bent plate; the width of the first baffle and the second baffle is greater than the width of the adjusting groove.
[0006] As a preferred technical solution of the improved gate valve of this utility model that can reduce component wear, a first soft pad is fixed on the side wall of the first baffle, and a second soft pad is fixed on the side wall of the second baffle. The first soft pad and the second soft pad are respectively located on the upper and lower sides of the adjustment groove.
[0007] As a preferred technical solution of the improved gate valve that can reduce component wear according to this utility model, the sealing block is made of corrosion-resistant elastic material, and the sealing block is conical, with its conical surface forming a sealing fit with the inner wall of the flow hole.
[0008] As a preferred technical solution for an improved gate valve that can reduce component wear according to this utility model, the top of the inclined baffle is fixed to the inner wall of the valve pipe by a connecting straight plate.
[0009] As a preferred technical solution of the improved gate valve of this utility model that can reduce component wear, a turntable is fixed to the top of the drive rod.
[0010] As a preferred technical solution of the improved gate valve of this utility model that can reduce component wear, one end of the rotating plate is fixed to the sleeve through a connecting plate, and the sleeve and the fixed shaft form a rotating pair.
[0011] As a preferred technical solution of the improved gate valve of this utility model that can reduce component wear, threaded rings are symmetrically fixed at both ends of the valve pipe for pipeline connection.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] (1) The rotational motion of the rotating plate around the fixed axis replaces the vertical sliding of the traditional gate, avoiding direct friction between metals and reducing the risk of scratches. The sealing block is made of elastic material (such as rubber or polytetrafluoroethylene) to form a flexible seal with the conical surface of the flow hole, reducing hard contact. Through the above structure, compared with the hard friction of the traditional gate, the rotational sealing can significantly reduce friction damage and extend service life.
[0014] (2) The elastic material of the sealing block allows for slight deformation, and can maintain the seal even if there are particles, avoiding jamming. The conical surface of the sealing block forms a line seal or surface seal with the flow hole, and can still maintain a tight fit through elastic recovery after long-term use.
[0015] (3) The rotating plate is fitted with the rotating pair of the fixed shaft through the sleeve, which avoids the deformation problem caused by the eccentric load of the traditional gate.
[0016] (4) The push rod drives the rotating plate through the adjustment groove, which makes the mechanical transmission more efficient, reduces the operating torque requirement, and is highly practical. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a three-dimensional sectional view of the present invention;
[0020] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a three-dimensional schematic diagram of the rotating plate of this utility model.
[0022] In the diagram: 1. Valve pipe; 11. Threaded ring; 12. Fixed shaft; 2. Drive rod; 21. Turntable; 22. Push rod; 23. First baffle; 231. First soft pad; 24. Second baffle; 241. Second soft pad; 3. Inclined baffle; 31. Flow hole; 32. Connecting straight plate; 4. Rotating plate; 41. Bending plate; 42. Adjusting groove; 43. Sealing block; 44. Connecting plate; 45. Sleeve. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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. Example 1
[0024] Reference Figure 1 and Figure 2 As shown, this utility model provides the following technical solution: an improved gate valve that can reduce component wear, including a valve tube 1 and a drive rod 2. The specific structure and usage of the valve tube 1 and the drive rod 2 can refer to the gate valve structure in the prior art. Rotating the drive rod 2 allows it to move up and down inside the valve tube 1 to push the gate structure. The top surface of the valve tube 1 is provided with the drive rod 2, and the top of the drive rod 2 is fixed with a turntable 21. Threaded rings 11 are symmetrically fixed at both ends of the valve tube 1 for pipe connection.
[0025] Reference Figure 2 and Figure 4As shown, specifically, a push rod 22 is fixed to the lower end of the drive rod 2. The push rod 22 can be driven to move up and down inside the valve tube 1. An inclined baffle 3 is fixed to the inner wall of the valve tube 1. The inclined structure facilitates docking with the sealing block 43 on the rotating plate 4. The top of the inclined baffle 3 is fixed to the inner wall of the valve tube 1 through a connecting straight plate 32. A flow hole 31 is provided in the middle of the inclined baffle 3. The inner wall of the hole is arc-shaped to reduce scratches. A rotating plate 4 is provided on one side of the inclined baffle 3. A sealing block 43 of elastic material (such as rubber or polytetrafluoroethylene) is fixed to the side wall of the rotating plate 4, which is conical with the flow hole 31. A flexible seal is formed to reduce hard contact. The sealing block 43 is embedded inside the flow hole 31. The elastic material reduces hard friction. One end of the rotating plate 4 is sleeved on the outside of the fixed shaft 12 on the inner wall of the valve pipe 1 through the sleeve 45. One end of the rotating plate 4 is fixed to the sleeve 45 through the connecting plate 44. The sleeve 45 and the fixed shaft 12 form a rotating pair. The other end of the rotating plate 4 is fixed with a bent plate 41. The bent plate 41 is provided with an adjustment groove 42 in the middle. The push rod 22 passes through the adjustment groove 42. The push rod 22 can drive the rotating plate 4 to rotate around the fixed shaft 12, so as to realize the opening and closing control of the flow hole 31 by the sealing block 43.
[0026] Specifically, by rotating the plate 4 around the fixed shaft 12 instead of the vertical sliding of the traditional gate, direct friction between metals is avoided, reducing the risk of scratches. Compared with the hard friction of the traditional gate, the rotating sealing can significantly reduce friction damage and extend service life. Example 2
[0027] In another embodiment of this solution, refer to Figure 2 and Figure 3 As shown, specifically, a first baffle 23 and a second baffle 24 are fixed to the lower outer wall of the push rod 22. The first baffle 23 and the second baffle 24 are located on the upper and lower sides of the bent plate 41, respectively, preventing the push rod 22 from disengaging from the inside of the adjustment groove 42. The width of the first baffle 23 and the second baffle 24 is greater than the width of the adjustment groove 42. The bent plate 41 can move outside the push rod 22 through the adjustment groove 42, so that the push rod 22 can flexibly drive the rotating plate 4 to rotate, making the force transmission more efficient and reducing the operating torque requirement. At the same time, the bending structure design reduces the length of the rotating plate 4 and avoids restricted rotation.
[0028] Reference Figure 3 As shown, specifically, a first soft pad 231 is fixed to the side wall of the first baffle 23, and a second soft pad 241 is fixed to the side wall of the second baffle 24. The first soft pad 231 and the second soft pad 241 are located on the upper and lower sides of the adjustment groove 42, respectively. The first soft pad 231 and the second soft pad 241 provide buffering at the adjustment groove 42 to absorb impact and vibration. Example 3
[0029] In another embodiment of this solution, refer to Figure 2and Figure 3 As shown, specifically, the sealing block 43 is made of corrosion-resistant elastic material. The sealing block 43 is conical, and its conical surface forms a sealing fit with the inner wall of the flow hole 31. The elastic material of the sealing block 43 allows for slight deformation, and can maintain sealing even if there are particles, avoiding jamming. The conical surface of the sealing block 43 forms a line seal or surface seal with the flow hole 31, and can still maintain a tight fit through elastic recovery after long-term use.
[0030] The working principle and usage process of this utility model are as follows: When using a gate valve, the operator rotates the drive rod 2 as in a traditional gate valve, causing the drive rod 2 to move the push rod 22 up and down. When the push rod 22 moves down, it causes the rotating plate 4 to rotate downward through the baffle on the push rod 22, so that the sealing block 43 moves away from the flow hole 31 of the inclined baffle 3, allowing the valve pipe 1 to guide liquid through the flow hole 31. When the operator rotates the drive rod 2 to move the push rod 22 up, the push rod 22 causes the rotating plate 4 to rotate upward through the baffle, and the sealing block 43 on the rotating plate 4 moves to one side of the flow hole 31. As the rotating plate 4 rotates, the elastic sealing block 43 can stably squeeze and seal the inside of the flow hole 31, thus blocking the flow passage. This rotational sealing method replaces the vertical movement of the gate plate in traditional gate valves, reducing component friction damage and extending service life.
[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An improved gate valve that reduces component wear, comprising a valve tube (1) and a drive rod (2), characterized in that: A drive rod (2) is provided on the top surface of the valve tube (1). A push rod (22) is fixed at the lower end of the drive rod (2). The push rod (22) can be driven to move up and down inside the valve tube (1). An inclined baffle (3) is fixed on the inner wall of the valve tube (1). A flow hole (31) is provided in the middle of the inclined baffle (3). A rotating plate (4) is provided on one side of the inclined baffle (3). The side wall of the rotating plate (4) is fixed with a sealing block (43) of elastic material. The sealing block (43) is embedded in the inner side of the flow hole (31). One end of the rotating plate (4) is sleeved on the outside of the fixed shaft (12) of the inner wall of the valve pipe (1) through a sleeve (45). The other end of the rotating plate (4) is fixed with a bending plate (41). The bending plate (41) has an adjustment groove (42) in the middle. The push rod (22) passes through the adjustment groove (42). The push rod (22) can drive the rotating plate (4) to rotate around the fixed shaft (12) to realize the opening and closing control of the flow hole (31) by the sealing block (43).
2. An improved gate valve according to claim 1 that reduces component wear, characterized in that: The lower end of the push rod (22) is fixed with a first baffle (23) and a second baffle (24), and the first baffle (23) and the second baffle (24) are located on the upper and lower sides of the bent plate (41), respectively. The width of the first baffle (23) and the second baffle (24) is greater than the width of the adjustment groove (42).
3. An improved gate valve according to claim 2 that reduces component wear, characterized in that: The first baffle (23) has a first soft pad (231) fixed on its side wall, and the second baffle (24) has a second soft pad (241) fixed on its side wall. The first soft pad (231) and the second soft pad (241) are located on the upper and lower sides of the adjustment groove (42), respectively.
4. An improved gate valve according to claim 3 that reduces component wear, characterized in that: The sealing block (43) is made of corrosion-resistant elastic material. The sealing block (43) is conical, and its conical surface forms a sealing fit with the inner wall of the flow hole (31).
5. An improved gate valve according to claim 4 that reduces component wear, characterized in that: The top of the inclined baffle (3) is fixed to the inner wall of the valve pipe (1) by a connecting straight plate (32).
6. An improved gate valve according to claim 5 that reduces component wear, characterized in that: A turntable (21) is fixed to the top of the drive rod (2).
7. An improved gate valve according to claim 6 that reduces component wear, characterized in that: One end of the rotating plate (4) is fixed to the sleeve (45) through the connecting plate (44), and the sleeve (45) and the fixed shaft (12) form a rotating pair.
8. An improved gate valve according to claim 7 that reduces component wear, characterized in that: The valve pipe (1) has threaded rings (11) fixed symmetrically at both ends for pipe connection.