Wear-resistant ceramic double-flashboard gate valve

Abstract

The utility model discloses a wear-resistant ceramic double-flashboard gate valve which comprises an electric push rod, a valve body and a valve plate, valve ports are formed in the two sides of the end of the valve body, flange plates are arranged at the ends of the valve ports, an upper limiting plate and a lower limiting plate are arranged at the top of the valve body, and the electric push rod is arranged in the middle of the top end of the upper limiting plate. The telescopic end of the electric push rod is connected with the valve rod through a limiting rod. The upper limiting plate and the lower limiting plate are arranged at the top of the valve body, the limiting rod is arranged in the middle of the position between the upper limiting plate and the lower limiting plate so that the limiting rod can limit stretching and retracting of the electric push rod, the buffering spring is arranged on the outer side of the limiting rod so that the limiting rod can conduct stretching and retracting buffering protection and can accurately control opening and closing of the gate valve, and the two valve plates are arranged in the valve body. The two valve plates are connected through the connecting block, double-gate-plate sealing can be conducted on the valve port through the two valve plates, sealing control is more convenient, the auxiliary valve plate is arranged on one side of the valve plates, and the sealing ring is arranged on the side of the auxiliary valve plate.

Description

Technical Field

[0001] This utility model relates to the field of gate valves, specifically a wear-resistant ceramic double slide gate valve. Background Technology

[0002] A gate valve is a gate-shaped valve used to cut off and regulate flow. It is installed on the outlet pipeline of centrifugal pumps and mixed-flow pumps. The nominal pressure of a gate valve is PN0.1~32; the nominal diameter is DN15~1800; and the operating temperature is t≤550℃. It features low fluid resistance and low opening and closing torque, and is divided into rigid gate valves and resilient gate valves. Its function is to close the valve before starting a water pump, allowing for vacuum pump purging and water filling; and to close the valve when starting a centrifugal pump, reducing the power of the motor. Its purpose is to connect and disconnect the medium in a pipeline. The direction of the gate's movement is perpendicular to the fluid direction. Gate valves can only be fully open or fully closed; they cannot be used for regulation or throttling.

[0003] For example, the authorized patent with publication number CN216975830U (Soft-seal gate valve for easy replacement of gate valve) includes a gate valve body, a filter cylinder, a valve cover disposed on the gate valve body, an inlet channel and an outlet channel opened radially along the gate valve body, a valve plate disposed between the inlet channel and the outlet channel for controlling the opening and closing of fluid, a valve stem disposed above the valve plate inside the gate valve body, a channel opened above the gate valve body, the lower end of the valve stem connected to the valve plate, the upper end of the valve stem passing through the valve cover, a first channel for the filter cylinder to pass through the inlet channel of the gate valve body, the filter cylinder passing through the first channel and the lower end of the filter cylinder resisting the inner wall of the inlet channel, a cleaning device for cleaning the filter cylinder inside the filter cylinder, and a fixing device for fixing the filter cylinder to the gate valve body;

[0004] The gate valves in the prior art are not stable enough in the opening and closing process, and the lifting control cannot be limited, which can easily cause wear on the valve stem port, making them unsafe to use. Furthermore, the valve plate seal is not convenient for simultaneous control of both ports, and the sealing effect is insufficient, making it impossible to perform multi-layer auxiliary sealing. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant ceramic double-slide gate valve to solve the problems mentioned in the background art, such as unstable control during the opening and closing process of the gate valve, inability to limit the lifting control, easy wear of the valve stem port, insufficient safety in use, inconvenience of simultaneous control of both ports in the valve plate sealing, insufficient sealing effect, and inability to perform multi-layer auxiliary sealing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant ceramic double-slide gate valve, comprising an electric actuator, a valve body, and a valve plate. The valve body has valve ports on both sides of its end, and a flange plate is provided at the end of each valve port. The valve body has an upper limit plate and a lower limit plate at its top. An electric actuator is provided at the center of the top of the upper limit plate, and the telescopic end of the electric actuator is connected to the valve stem through a limit rod.

[0007] In a further embodiment, the valve body has two valve plates connected by a connecting block inside, and the connecting block is connected to the end of the valve stem.

[0008] In a further embodiment, a secondary valve plate is provided at the center of one side of the valve plate, and a sealing ring is provided on the side of the secondary valve plate.

[0009] In a further embodiment, the upper limit plate and the lower limit plate are symmetrically arranged, and the corners of the upper limit plate and the lower limit plate are connected by a mounting rod.

[0010] In a further embodiment, the top end of the valve body is provided with a guide sleeve, and the valve stem is slidably guided to the guide sleeve.

[0011] In a further embodiment, a buffer spring is provided on the outer side of the limiting rod, and the valve plate is made of a wear-resistant ceramic structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The valve body of this utility model is provided with an upper limit plate and a lower limit plate on the top, and a limit rod is provided in the middle between the two, so that the extension and retraction of the electric actuator can be limited. A buffer spring is provided on the outside of the limit rod, so that the extension and retraction buffer protection can be provided, and the opening and closing of the gate valve can be precisely controlled.

[0014] The valve body of this utility model is provided with two valve plates, which are connected by a connecting block. The two valve plates can provide double gate sealing for the valve port, making sealing control more convenient. A secondary valve plate is provided on one side of the valve plate, and a sealing ring is provided on the side of the secondary valve plate. The secondary valve plate can provide multi-layer sealing for the valve port, which greatly improves the sealing effect of the gate valve. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a wear-resistant ceramic double-slide gate valve according to the present invention;

[0016] Figure 2 This is a schematic diagram of the valve body of this utility model;

[0017] Figure 3 This is a schematic diagram of the valve plate of this utility model;

[0018] Figure 4This is a structural schematic diagram of part A of this utility model.

[0019] In the diagram: 1. Electric actuator; 2. Upper limit plate; 3. Mounting rod; 4. Lower limit plate; 5. Limiting rod; 6. Valve body; 7. Flange plate; 8. Valve stem; 9. Valve plate; 10. Sealing ring; 11. Connecting block; 12. Secondary valve plate; 13. Valve port. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-4 This utility model provides an embodiment of a wear-resistant ceramic double-slide gate valve, comprising an electric actuator 1, a valve body 6, and a valve plate 9. Valve ports 13 are provided on both sides of the valve body 6, and flange plates 7 are provided at the ends of the valve ports 13. An upper limit plate 2 and a lower limit plate 4 are provided on the top of the valve body 6. An electric actuator 1 is located at the center of the top of the upper limit plate 2. The telescopic end of the electric actuator 1 is connected to the valve stem 8 via a limit rod 5. A buffer spring is provided on the outer side of the limit rod 5. The valve plate 9 is made of wear-resistant ceramic, and the buffer spring allows the limit rod 5 to be buffered and limited. The flange plate 7 facilitates connection to a flow guide pipe, the upper limit plate 2 facilitates the installation of the electric actuator 1, and the lower limit plate 4 connects to the valve body 6. The electric actuator 1 controls the raising and lowering of the valve stem 8.

[0022] The valve body 6 has two valve plates 9 connected by a connecting block 11. The connecting block 11 is connected to the end of the valve stem 8. The two valve plates 9 are connected by the connecting block 11, and the valve stem 8 can control the opening and closing of the two valve plates 9. A secondary valve plate 12 is provided in the center of one side of the valve plate 9. A sealing ring 10 is provided on the side of the secondary valve plate 12. The secondary valve plate 12 can assist in sealing, and the sealing ring 10 is used to enhance the sealing effect.

[0023] The upper limit plate 2 and the lower limit plate 4 are symmetrically arranged, and the corner of the upper limit plate 2 and the lower limit plate 4 are connected by a mounting rod 3. The mounting rod 3 is used to lock and fix the upper limit plate 2 and the lower limit plate 4.

[0024] The top of the valve body 6 is provided with a guide sleeve, and the valve stem 8 is slidably guided to the guide sleeve. The guide sleeve is used to limit and guide the valve stem 8 to extend and retract.

[0025] Working principle: In use, the cylinder end of the electric actuator 1 is connected to the upper limit plate 2. The upper limit plate 2 and the lower limit plate 4 are assembled through the mounting rod 3. The end of the valve stem 8 is connected to the limit rod 5. The extension and retraction of the electric actuator 1 drives the valve stem 8 to rise and fall, so that the valve stem 8 controls the two valve plates 9 to seal the valve port 13. The auxiliary valve plate 12 on one side of the valve plate 9 enhances the sealing effect of the valve port 13. The connecting block 11 is used to connect to the valve stem 8, and the flange plate 7 is used to connect to the end of the pipeline.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wear-resistant ceramic double-slide gate valve, comprising an electric actuator (1), a valve body (6), and a valve plate (9), characterized in that: The valve body (6) has valve ports (13) on both sides of its end. The valve ports (13) have flange plates (7) at their ends. The valve body (6) has an upper limit plate (2) and a lower limit plate (4) at its top. The upper limit plate (2) has an electric push rod (1) at its top center. The telescopic end of the electric push rod (1) is connected to the valve stem (8) through a limit rod (5). The limit rod (5) has a buffer spring on its outer side. The valve plate (9) is made of wear-resistant ceramic structure.

2. A wear-resistant ceramic double disc gate valve according to claim 1, characterized in that: The valve body (6) has two valve plates (9) connected by a connecting block (11) inside, and the connecting block (11) is connected to the end of the valve stem (8).

3. A wear-resistant ceramic double disc gate valve according to claim 2, characterized in that: A secondary valve plate (12) is provided at the center of one side of the valve plate (9), and a sealing ring (10) is provided on the side of the secondary valve plate (12).

4. A wear-resistant ceramic double disc gate valve according to claim 1, characterized in that: The upper limit plate (2) and the lower limit plate (4) are symmetrically arranged, and the corners of the upper limit plate (2) and the lower limit plate (4) are connected by a mounting rod (3).

5. A wear-resistant ceramic double disc gate valve according to claim 1, characterized in that: The top of the valve body (6) is provided with a guide sleeve, and the valve stem (8) is slidably guided to the guide sleeve.

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