Bidirectional sealing control gate valve

Abstract

The utility model discloses a bidirectional sealing control gate valve which comprises a valve body and a valve rod. The annular frame is slidably mounted at the lower end of the side wall of the valve rod. The valve plates are horizontally and slidably installed on the two sides of the annular frame correspondingly. The sliding block is slidably installed on the inner side of the annular frame and fixedly connected with the bottom of the valve rod. The elastic pieces are evenly distributed between the bottoms of the sliding blocks and the inner wall of the annular frame. The multiple fixing rods are evenly distributed on the front side wall and the rear side wall of the sliding block. One ends of a pair of inner supporting rods are hinged to the fixing rod, and the other ends of the two inner supporting rods are hinged to the valve plates on the two sides respectively. According to the gate valve, due to the fact that the two valve plates horizontally slide on the two sides of the annular frame, the situation that the valve plates are damaged due to friction is effectively avoided; the valve plate is driven through relative rotation of the two hinged inner supporting rods, so that damage to internal components of the valve plate due to friction is effectively avoided, and good sealing performance is guaranteed to be kept in the long-term closing and opening process.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a bidirectional sealing control gate valve. Background Technology

[0002] Gate valves are a common type of industrial valve, characterized by an internal sealing structure that effectively prevents media leakage. They typically consist of a valve body, valve cover, valve stem, and valve plate. The valve body and valve plate of a gate valve are sealed using packing or O-rings to ensure no leakage occurs when the valve is closed.

[0003] However, during the long-term closing and opening process of the gate valve, the valve plate and its internal components are easily damaged due to friction, which affects the valve's sealing performance. Therefore, a bidirectional sealing control gate valve is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a bidirectional sealing control gate valve to solve the problem that the valve plate and its internal components are easily damaged due to friction during long-term closing and opening of the gate valve, thereby affecting the sealing performance of the valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional sealing control gate valve, comprising:

[0006] Valve body;

[0007] A valve stem is disposed on the valve body;

[0008] An annular frame is slidably mounted on the lower end of the side wall of the valve stem;

[0009] There are two valve plates, which are horizontally slidably installed on both sides of the annular frame.

[0010] The slider is slidably mounted on the inner side of the annular frame and is fixedly connected to the bottom of the valve stem;

[0011] Several elastic elements are provided, evenly distributed between the bottom of the slider and the inner wall of the annular frame;

[0012] Several fixing rods are provided and evenly distributed on the front and rear side walls of the slider;

[0013] The inner support rods are provided in several pairs. One end of each pair of inner support rods is hinged to a fixed rod, and the other ends of the two inner support rods are respectively hinged to the valve plates on both sides.

[0014] Preferably, the annular frame has several guide grooves on its two side walls, and the two valve plates have guide rods extending into the guide grooves on their side walls that are close to each other.

[0015] Preferably, the elastic element is a spring.

[0016] Preferably, a guide post through the slider is provided between the upper and lower inner walls of the annular frame.

[0017] Preferably, the valve stem has a plurality of grooves on its side wall, and the top of the annular frame has a second slider that extends into the grooves.

[0018] Preferably, the height of the hinge point between the inner support rod and the valve plate is lower than the height of the hinge point between the inner support rod and the fixed rod.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a bidirectional sealing control gate valve, in which two valve plates slide horizontally on both sides of an annular frame, effectively avoiding damage to the valve plates due to friction. The valve rod drives the annular frame to descend to the bottom. As the valve rod continues to descend, it drives the slider and the fixed rod to descend, compressing the elastic element. At the same time, the fixed rod drives the two inner support rods to rotate relative to each other, causing the two valve plates to move away from each other and seal the valve body. By setting the hinged inner support rods, the problem of damage to the internal components of the valve plate due to friction is effectively avoided, ensuring good sealing performance of the gate valve during long-term closing and opening. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A;

[0022] Figure 3 This is a schematic diagram of the main cross-sectional structure of the annular frame of this utility model.

[0023] In the diagram: 1. Valve body; 2. Valve stem; 3. Annular frame; 4. Valve plate; 5. Slider; 6. Elastic element; 7. Fixed rod; 8. Inner support rod; 9. Guide column; 10. Slide groove; 11. Second slider; 12. Guide groove; 13. Guide rod. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-3This utility model provides a technical solution: a bidirectional sealing control gate valve, including a valve body 1; a valve stem 2 disposed on the valve body 1; an annular frame 3 slidably mounted on the lower end of the side wall of the valve stem 2; two valve plates 4 are disposed, respectively horizontally slidably mounted on both sides of the annular frame 3; a slider 5 is slidably mounted on the inner side of the annular frame 3 and fixedly connected to the bottom of the valve stem 2; several elastic elements 6 are disposed, evenly distributed between the bottom of the slider 5 and the inner wall of the annular frame 3; several fixed rods 7 are disposed, evenly distributed on the front and rear side walls of the slider 5; several pairs of inner support rods 8 are disposed, one end of each pair of inner support rods 8 is hinged to a fixed rod 7, and two... The other end of the inner support rod 8 is hinged to the valve plates 4 on both sides. The two valve plates 4 slide horizontally on both sides of the annular frame 3, which effectively avoids damage to the valve plates 4 due to friction. The valve rod 2 drives the annular frame 3 to descend to the bottom. As the valve rod 2 continues to descend, it drives the slider 5 and the fixed rod 7 to descend, compressing the elastic element 6. At the same time, the fixed rod 7 drives the two inner support rods 8 to rotate relative to each other, so that the two valve plates 4 move away from each other and seal the valve body 1. By setting the hinged inner support rods 8, the problem of damage to the internal components of the valve plates 4 due to friction is effectively avoided, ensuring good sealing performance during long-term closing and opening of the gate valve.

[0026] Specifically, the annular frame 3 has several guide grooves 12 on both sides of its side walls, and the two valve plates 4 have guide rods 13 extending into the guide grooves 12 on their side walls that are close to each other. By having the guide rods 13 on the two valve plates 4 extend into the several guide grooves 12, the valve plates 4 can slide horizontally on both sides of the annular frame 3, which effectively avoids the problem of valve plates being damaged by friction during the long-term closing and opening of the gate valve.

[0027] Specifically, the elastic element 6 is set as a spring. By setting the elastic element 6, when the valve stem 2 is rising, the compressed elastic element 6 releases pressure to assist the slider 5 in moving relative to the annular frame 3, effectively avoiding the phenomenon of jamming when opening the gate 4.

[0028] Specifically, a guide post 9 is provided between the upper and lower inner walls of the annular frame 3, which penetrates the slider 5. There are two guide posts 9, located on both sides of the valve stem 2 respectively. The guide posts 9 ensure the stability of the slider 5 moving up and down within the annular frame 3.

[0029] Specifically, the valve stem 2 has several sliding grooves 10 on its side wall, and the top of the annular frame 3 has a second slider 11 that extends into the sliding groove 10. The second slider 11 is a strip block. By sliding the second slider 11 on the annular frame 3 in the sliding groove 10 of the valve stem 2, the stability of the sliding connection between the annular frame 3 and the valve stem 2 is ensured, and the phenomenon of the annular frame 3 shifting during use is effectively avoided.

[0030] Specifically, the height of the hinge point between the inner support rod 8 and the valve plate 4 is lower than the height of the hinge point between the inner support rod 8 and the fixed rod 7. By setting the height of the two ends of the inner support rod 8, it is ensured that when the fixed rod 7 descends, it drives the two inner support rods 8 to rotate relative to each other, so that the two valve plates 4 move away from each other.

[0031] Working principle: When the gate valve is closed, the valve stem 2 is driven to descend to the bottom. As the valve stem 2 continues to descend, it drives the slider 5 and the fixed rod 7 to descend, compressing the elastic element 6. At the same time, the fixed rod 7 drives the two inner support rods 8 to rotate relative to each other, so that the two valve plates 4 move away from each other and seal the valve body 1.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional sealing control gate valve, characterized in that, include: Valve body (1); The valve stem (2) is disposed on the valve body (1); The annular frame (3) is slidably mounted on the lower end of the side wall of the valve stem (2); There are two valve plates (4), which are horizontally slidably installed on both sides of the annular frame (3); The slider (5) is slidably installed on the inner side of the annular frame (3) and fixedly connected to the bottom of the valve stem (2); Several elastic elements (6) are provided and are evenly distributed between the bottom of the slider (5) and the inner wall of the annular frame (3); A number of fixing rods (7) are provided and are evenly distributed on the front and rear side walls of the slider (5); The inner support rods (8) are provided in several pairs. One end of each pair of inner support rods (8) is hinged to the fixed rod (7), and the other ends of the two inner support rods (8) are respectively hinged to the valve plates (4) on both sides.

2. The bidirectional sealing control gate valve according to claim 1, characterized in that: The annular frame (3) has several guide grooves (12) on its two side walls, and the two valve plates (4) have guide rods (13) extending into the guide grooves (12) on their side walls that are close to each other.

3. The bidirectional sealing control gate valve according to claim 1, characterized in that: The elastic element (6) is configured as a spring.

4. A bidirectional sealing control gate valve according to claim 1, characterized in that: The annular frame (3) is provided with a guide post (9) that passes through the slider (5) between the upper and lower inner walls.

5. A bidirectional sealing control gate valve according to claim 1, characterized in that: The valve stem (2) has several grooves (10) on its side wall, and the top of the annular frame (3) has a second slider (11) that extends into the grooves (10).

6. A bidirectional sealing control gate valve according to claim 1, characterized in that: The height of the hinge point between the inner support rod (8) and the valve plate (4) is lower than the height of the hinge point between the inner support rod (8) and the fixing rod (7).

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