A multi-stage discharge gate valve for a screw conveyor

Abstract

The utility model relates to the technical field of feeding valves, and discloses a multi-stage discharge port gate valve for a screw conveyor, including a valve body, an inner wall of the valve body is provided with a sliding groove, the top of the valve body is fixedly connected to a cover body, and the upper surface of the cover body is provided with a positioning component. The utility model sets the positioning component, and passes the positioning cross bar through the inside of the through hole and the circular hole, and then passes through the positioning support, so as to limit and fix the operating hand wheel, so as to avoid the problem of material leakage caused by the rotation of the operating hand wheel and the opening of the valve plate due to misoperation by personnel. The fixed operating hand wheel can prevent the valve state from changing due to inadvertent touching or moving the operating hand wheel. In particular, it is very important to fix the operating hand wheel to prevent misoperation by personnel during the process of personnel inspecting and repairing the equipment, and the wear-resistant layer set can reduce the wear of the sliding groove, so that the valve plate maintains stable performance during movement, which helps to improve the working efficiency of the entire valve.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding valves, in particular to a multi-stage feed port gate valve for a screw conveyor. Background Art

[0002] The gate valve is a common type of valve, mainly used for fluid control in pipeline systems. It uses the gate as the main opening and closing component, and opens or closes the valve by lifting the gate to control the flow of the fluid.

[0003] If the handwheel of the gate valve is not fixed and limited, the handwheel may turn due to unintentional pushing or pulling during use, thereby accidentally opening or closing the valve. If the valve is opened accidentally, it may cause the sudden release of high-pressure fluid, causing splashing, leakage or other safety problems, and may also cause danger to surrounding personnel. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a multi-stage discharge port gate valve for a screw conveyor.

[0005] The utility model is implemented by the following technical scheme: a multi-stage discharge gate valve of a screw conveyor, comprising a valve body, the inner wall of which is provided with a sliding groove, the top of which is fixedly connected with a cover body, and the upper surface of which is provided with a positioning assembly;

[0006] The positioning assembly comprises a positioning support, the positioning support is fixedly connected to two sides of the upper surface of the cover body, the outer surface of the positioning support is provided with a through hole, and a positioning cross bar is inserted into the interior of the through hole.

[0007] Through the above technical solution, by passing the positioning cross bar through the through hole and the circular hole and then passing it through the positioning support, the operating handwheel can be limited and fixed to avoid the problem of personnel operating incorrectly, which may cause the operating handwheel to rotate and the valve plate to open, resulting in material leakage. The fixed operating handwheel can prevent the valve state from changing due to accidental touching or moving the operating handwheel. Especially in the process of personnel inspecting and repairing the equipment, it is very important to fix the operating handwheel to prevent personnel from operating incorrectly.

[0008] As a further improvement of the above solution, there are two sliding grooves, which are respectively opened on the inner walls of both sides of the valve body.

[0009] Through the above technical solution, the sliding groove can reduce the direct contact between the valve plate and the valve body during movement, thereby reducing friction, making the valve plate move more smoothly and improving overall work efficiency. In addition, since friction is reduced, the sliding groove helps to protect the valve plate from wear, thereby extending its service life.

[0010] As a further improvement of the above solution, the inner wall of the slide groove is provided with a wear-resistant layer, and the material of the wear-resistant layer is polytetrafluoroethylene.

[0011] Through the above technical scheme, the wear-resistant layer can significantly improve the wear resistance of the sliding groove and extend its service life. Even under harsh working conditions, it can maintain a good working condition. The wear-resistant layer can reduce the wear of the sliding groove, so that the valve plate maintains stable performance during movement, which helps to improve the working efficiency of the entire valve.

[0012] As a further improvement of the above solution, a valve plate is slidably connected inside the sliding groove, and the material of the valve plate is steel.

[0013] Through the above technical solutions, the steel has high strength and hardness, can withstand high pressure and high flow conditions, and is suitable for various industrial control and fluid power systems.

[0014] As a further improvement of the above solution, a threaded sleeve is fixedly connected to the top of the front end of the valve plate, and an internal thread is provided inside the threaded sleeve.

[0015] Through the above technical solution, the threaded sleeve is connected to the lifting screw. When the operator turns the operating hand wheel, the lifting screw rotates, driving the valve plate to rise and fall through the threaded sleeve, thereby achieving the effect of controlling the opening and closing of the valve.

[0016] As a further improvement of the above solution, the internal thread of the threaded sleeve is connected to a lifting screw, and the top end of the lifting screw is fixedly connected to an operating hand wheel.

[0017] Through the above technical solution, the operating hand wheel is a device on the valve for manually operating the lifting screw. The user drives the lifting screw by rotating the operating hand wheel, thereby realizing the opening and closing of the valve.

[0018] As a further improvement of the above solution, a round hole matching the through hole is opened at the top end of the lifting screw rod, and the positioning cross bar is inserted into the through hole and the round hole.

[0019] Through the above technical solution, by passing the positioning cross bar through the through hole and the circular hole and then passing it through the positioning support, the operating hand wheel can be limited and fixed to avoid human error, which may cause the operating hand wheel to rotate and the valve plate to open, resulting in material leakage.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model provides a positioning component, and through the positioning cross bar passing through the inside of the through hole and the circular hole and then passing through the positioning support, the operating hand wheel can be limited and fixed, so as to avoid the problem of material leakage caused by the rotation of the operating hand wheel and the opening of the valve plate due to misoperation by personnel. The fixed operating hand wheel can prevent the valve state from changing due to inadvertent touching or moving the operating hand wheel. Especially in the process of personnel inspecting and repairing the equipment, it is very important to fix the operating hand wheel to prevent misoperation by personnel. The wear-resistant layer provided can reduce the wear of the sliding groove, so that the valve plate maintains stable performance during movement, which helps to improve the working efficiency of the entire valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the wear-resistant layer of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the cover body of the utility model;

[0025] Figure 4 This is a structural schematic diagram of the threaded sleeve of the utility model;

[0026] Figure 5 It is a schematic diagram of the structural disassembly of the positioning component of the utility model.

[0027] Description of main symbols:

[0028] 1. Valve body; 2. Sliding groove; 3. Cover body; 4. Positioning assembly; 401. Positioning support; 402. Through hole; 403. Positioning cross bar; 5. Wear-resistant layer; 6. Valve plate; 7. Threaded sleeve; 8. Lifting screw; 9. Operating hand wheel. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0030] Example:

[0031] Please combine Figure 1-5 A multi-stage discharge gate valve of a screw conveyor in this embodiment includes a valve body 1, a sliding groove 2 is provided on the inner wall of the valve body 1, a cover body 3 is fixedly connected to the top of the valve body 1, and a positioning assembly 4 is provided on the upper surface of the cover body 3;

[0032] The positioning assembly 4 includes a positioning support 401, which is fixedly connected to both sides of the upper surface of the cover body 3. A through hole 402 is opened on the outer surface of the positioning support 401, and a positioning cross bar 403 is inserted into the interior of the through hole 402. By passing the positioning cross bar 403 through the through hole 402 and the interior of the circular hole and then passing it through the positioning support 401, the operating hand wheel 9 can be limited and fixed to avoid the problem of human error in operation, which causes the operating hand wheel 9 to rotate and the valve plate 6 to open and cause material leakage. Fixing the operating hand wheel 9 can prevent the valve state from changing due to inadvertent touching or moving the operating hand wheel 9. Especially in the process of personnel inspecting and repairing the equipment, it is very important to fix the operating hand wheel 9 to prevent human error in operation.

[0033] There are two sliding grooves 2, which are respectively opened on the inner walls on both sides of the valve body 1. The sliding grooves 2 can reduce the direct contact between the valve plate 6 and the valve body 1 during movement, thereby reducing friction, making the valve plate 6 move more smoothly and improving the overall working efficiency. In addition, since the friction is reduced, the sliding grooves 2 help to protect the valve plate 6 from wear, thereby extending its service life.

[0034] The inner wall of the slide groove 2 is provided with a wear-resistant layer 5, and the material of the wear-resistant layer 5 is polytetrafluoroethylene. The wear-resistant layer 5 can significantly improve the wear resistance of the slide groove 2 and extend its service life. Even under harsh working conditions, it can maintain a good working state. The wear-resistant layer 5 can reduce the wear of the slide groove 2, so that the valve plate 6 maintains stable performance during movement, which helps to improve the working efficiency of the entire valve.

[0035] The slide groove 2 is internally slidably connected with a valve plate 6, which is made of steel. Steel has high strength and hardness, can withstand high pressure and high flow conditions, and is suitable for various industrial control and fluid power systems.

[0036] A threaded sleeve 7 is fixedly connected to the top of the front end of the valve plate 6. An internal thread is provided inside the threaded sleeve 7. The threaded sleeve 7 is connected to a lifting screw 8. When a person turns the operating hand wheel 9, the lifting screw 8 rotates, driving the valve plate 6 to rise and fall through the threaded sleeve 7, thereby achieving the effect of controlling the opening and closing of the valve.

[0037] The internal thread of the threaded sleeve 7 is connected with a lifting screw 8, and the top of the lifting screw 8 is fixedly connected with an operating hand wheel 9, which is a device on the valve for manually operating the lifting screw 8. The user drives the lifting screw 8 by rotating the operating hand wheel 9, thereby realizing the opening and closing of the valve.

[0038] A circular hole matching the through hole 402 is provided at the top of the lifting screw 8, and the positioning cross bar 403 is inserted into the through hole 402 and the inside of the circular hole. By passing the positioning cross bar 403 through the through hole 402 and the inside of the circular hole, and then passing through the positioning support 401, the operating hand wheel 9 can be limited and fixed to avoid human error, which may cause the operating hand wheel 9 to rotate and the valve plate 6 to open, resulting in material leakage.

[0039] The implementation principle of a multi-stage discharge port gate valve of a screw conveyor in the embodiment of the present application is as follows: when a person turns the operating hand wheel 9, the lifting screw 8 rotates, and the valve plate 6 is driven to rise and fall through the threaded sleeve 7, so as to achieve the effect of controlling the opening and closing of the valve. The positioning cross bar 403 is passed through the through hole 402 and the inside of the circular hole, and then through the positioning support 401, so that the operating hand wheel 9 can be limited and fixed to avoid the problem of material leakage caused by the rotation of the operating hand wheel 9 and the opening of the valve plate 6 due to misoperation by personnel. The fixed operating hand wheel 9 can prevent the valve state from changing due to inadvertent touching or moving the operating hand wheel 9. Especially in the process of personnel inspecting the equipment, it is very important to fix the operating hand wheel 9 to prevent misoperation by personnel. The material of the wear-resistant layer 5 is polytetrafluoroethylene. The wear-resistant layer 5 can significantly improve the wear resistance of the slide groove 2 and extend its service life. Even under harsh working conditions, it can maintain a good working state. The wear-resistant layer 5 can reduce the wear of the slide groove 2, so that the valve plate 6 maintains stable performance during movement, which helps to improve the working efficiency of the entire valve.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A multi-stage discharge gate valve for a screw conveyor, characterized in that: It comprises a valve body (1), the inner wall of the valve body (1) is provided with a sliding groove (2), the top of the valve body (1) is fixedly connected with a cover body (3), and the upper surface of the cover body (3) is provided with a positioning component (4); The positioning assembly (4) comprises a positioning support (401), wherein the positioning support (401) is fixedly connected to two sides of the upper surface of the cover body (3), a through hole (402) is provided on the outer surface of the positioning support (401), and a positioning cross bar (403) is inserted into the interior of the through hole (402).

2. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 1, characterized in that: There are two sliding grooves (2), which are respectively opened on the inner walls of both sides of the valve body (1).

3. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 1, characterized in that: The inner wall of the sliding groove (2) is provided with a wear-resistant layer (5), and the material of the wear-resistant layer (5) is polytetrafluoroethylene.

4. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 1, characterized in that: The interior of the sliding groove (2) is slidably connected with a valve plate (6), and the material of the valve plate (6) is steel.

5. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 4, characterized in that: The top of the front end of the valve plate (6) is fixedly connected with a threaded sleeve (7), and the threaded sleeve (7) is provided with an internal thread.

6. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 5, characterized in that: The internal thread of the threaded sleeve (7) is connected to a lifting screw rod (8), and the top end of the lifting screw rod (8) is fixedly connected to an operating hand wheel (9).

7. A multi-stage discharge port gate valve for a screw conveyor as claimed in claim 6, characterized in that: A circular hole matching the through hole (402) is formed at the top end of the lifting screw rod (8), and the positioning cross bar (403) is inserted into the through hole (402) and the inside of the circular hole.

Images