A gate valve with explosion-proof structure

Abstract

The utility model relates to the technical field of valves, and provides a gate valve with an explosion-proof structure that is not easy to damage and has high safety, comprising a valve body and a valve plate whose bottom is fitted and slidably arranged in the valve body, the top of the valve plate is meshed and connected with the inner wall of the valve body, the outer wall of the valve body is coated with an explosion-proof block that is connected to the inner cavity of the valve body, when the inner cavity of the valve body is quickly closed, the explosion-proof block is used for buffering, and when the valve body explodes, splashes are blocked and the high-pressure jet of water is buffered.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gate valve with an explosion-proof structure. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. Valves can quickly control the flow of fluids transported in pipelines and control the opening and closing of pipelines. They are widely used in life or production work. In the industrial field, a large amount of raw material fluids are required for pipeline transportation. In order to better control the flow and transportation of raw material fluids, staff will install valves on the pipelines, and then control pipeline transportation through valves, which effectively improves the controllability of pipeline transportation. And they only need to be rotated to quickly open and close and control the fluid flow. The operation is simple and convenient, and it has strong applicability.

[0003] A gate valve is a type of valve whose opening and closing parts are in the shape of a gate. The gate-shaped opening and closing parts are controlled to rise and fall by twisting the lifting rod, thereby controlling the opening and closing of the valve. It has a simple structure, is easy to use, and requires fewer maintenance and cleaning steps. It is widely used in various pipelines.

[0004] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: if the existing gate valve is used in a pipeline with high water pressure and the valve is closed quickly, it is easy for the water flow in the valve to be affected by inertia and impact the inner cavity of the valve at a very fast speed, thereby generating huge pressure on the inner cavity of the valve at the moment the valve is closed. After repeated use, it is easy to cause cracks in the valve, and the high water pressure can easily cause the cracks in the valve to burst, resulting in a short service life and poor safety. Utility Model Content

[0005] The utility model aims to provide a gate valve with an explosion-proof structure which is not easy to be damaged and has high safety in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gate valve with an explosion-proof structure, including a valve body and a valve plate whose bottom is fitted and slidably arranged in the valve body, the top of the valve plate is meshed and connected with the outer wall of the valve body, and the outer wall of the valve body is covered with an explosion-proof block which is connected to the inner cavity of the valve body. When the inner cavity of the valve body is quickly closed, the explosion-proof block is used for buffering, and when the valve body explodes, splashes are blocked and the high-pressure jet of water is buffered.

[0007] A further improvement is that a connecting flange is provided at the end of the valve body.

[0008] A further improvement is that a twist handle is provided at the top of the valve plate.

[0009] A further improvement is that the explosion-proof block includes a bonding plate arranged on the outer wall of the valve body and a protection block arranged on the bonding plate, a shock-absorbing frame is provided between the bonding plate and the protection block, and an impact tube with a bottom end connected to the inner cavity of the valve body is penetrated through the protection block.

[0010] A further improvement is that the impact tube includes a water inlet pipe whose bottom end is connected to the valve body and a buffer tube whose end is connected to the top of the water inlet pipe and penetrates the protection block, and a resistance block is slidably provided in the buffer tube.

[0011] A further improvement is that an opening and closing piece is movably engaged at the other end of the buffer tube.

[0012] A further improvement is that the inner wall of the buffer tube is also provided with an elastic column with one end in contact with one side of the resistance block.

[0013] A further improvement is that the resistance block includes a water pressure plate slidably arranged on the inner wall of the buffer tube and a pressure plate arranged on one side of the water pressure plate, a buffer frame is provided between the water pressure plate and the pressure plate, and the upper and lower ends of the other side of the water pressure plate are provided with a central block that fits with the inner wall of the buffer tube.

[0014] A further improvement is that a friction block is embedded in the surface of the centralizing block that is attached to the buffer tube.

[0015] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: when the valve is closed, the high-pressure water flow will be pushed into the buffer tube for buffering, and then the impact force of the water flow will be released and absorbed, so that the valve is less likely to be damaged by the huge pressure of the water flow, and the service life is longer. At the same time, when the valve body is damaged, the fragments and high-pressure water generated by the damage and explosion are blocked and their kinetic energy is absorbed by the bonding plate, the protective block and the shock-absorbing frame, so that when the valve is damaged, there will be no fragment explosion and high-pressure water spray, and it is safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of the front cross section of the valve of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the front cross section of the explosion-proof block of the utility model;

[0019] Figure 3It is a structural schematic diagram of a front view cross section of a resistance block of the utility model. DETAILED DESCRIPTION

[0020] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0021] See also Figure 1-3As shown, the technical solution adopted in this specific embodiment is: a gate valve with an explosion-proof structure, including a valve body 1 and a valve plate 2 that is fitted at the bottom and slidably arranged in the valve body 1, the top of the valve plate 2 is meshed and connected with the inner wall of the valve body 1, the outer wall of the valve body 1 is covered with an explosion-proof block 5 that is connected to the inner cavity of the valve body 1, the explosion-proof block 5 includes a fitting plate 51 arranged on the outer wall of the valve body 1 and a protection block 52 arranged on the fitting plate 51, a shock absorbing frame 53 is arranged between the fitting plate 51 and the protection block 52, an impact pipe with a bottom end connected to the inner cavity of the valve body 1 is also penetrated in the protection block 52, the impact pipe includes a water inlet pipe 54 that is connected to the valve body 1 at the bottom and a water inlet pipe 54 that is connected to the top of the water inlet pipe 54 at the end. The ends of the buffer tube 55 are connected to each other and penetrate the protection block 52. A resistance block 56 is slidably arranged in the buffer tube 52. The resistance block 56 includes a water pressure plate 31 slidably arranged on the inner wall of the buffer tube 55 and a pressure plate 32 arranged on one side of the water pressure plate 31. A buffer frame 33 is arranged between the water pressure plate 31 and the pressure plate 32. The upper and lower ends of the other side of the water pressure plate 31 are provided with a central block 35 that fits the inner wall of the buffer tube 55. When the inner cavity of the valve body 1 is quickly closed, the explosion-proof block 5 is used for buffering, and when the valve body 1 explodes, splashes are blocked and the high-pressure jet of water is buffered. When in use, the valve body 1 is connected to an external pipeline, and water flows into the inner cavity of the valve body 1. The valve plate 2 is twisted to The threaded rod at the top of the valve plate 2 can make the bottom of the valve plate 2 move upward with the movement of the threaded rod, and the valve body 1 can be opened at this time. The threaded rod at the top of the valve plate 2 can be twisted in the opposite direction to make the valve plate 2 drop and close the valve body 1. At the moment when the valve body 1 is closed, the water flow inertia will cause the water flow to impact the inner cavity of the valve body 1. At this time, the water flow in the valve body 1 can be pressed into the explosion-proof block 5 through the pressure difference, and then the water flow is introduced into the buffer tube 55 by the water inlet pipe 54, so that the water pressure plate 31 of the resistance block 56 is squeezed by the water flow, and the water flow is concentrated by the concentration block 35 at the same time. The pressure plate 32 is driven by the water pressure to slide along the inner wall of the buffer tube 55. At this time, the pressure plate 32 and the water pressure plate 31 can slide in the buffer tube 55 The friction force of the movement is used to offset the impact force of the water flow, so that the impact force of the water flow is greatly weakened, thereby reducing the impact force on the inner cavity of the valve body 1, making the valve less likely to be damaged by the huge pressure of the water flow, and having a longer service life. At the same time, when the valve body 1 is damaged, the bonding plate 51 cooperates with the protection block 52 and the shock-absorbing frame 53 to block the fragments generated by the damage and explosion, and the ejected high-pressure water impacts the bonding plate 51, so that the bonding plate 51 is pushed up and squeezes the shock-absorbing frame 53, so that the high-pressure water will not be ejected directly, but will be blocked and its kinetic energy will be offset by the elastic force of the shock-absorbing frame 53, thereby reducing the flow speed, so that when the valve is damaged, there will be no fragment explosion and high-pressure water spraying, and it is safer to use;

[0022] The end of the valve body 1 is provided with a connecting flange 3, which is conducive to making the valve more convenient to connect to the external pipeline;

[0023] The top of the valve plate 1 is provided with a twist handle 4, which is conducive to opening and closing the valve more labor-saving;

[0024] The other end of the buffer tube 52 is movably engaged with an opening and closing piece 57, which is conducive to falling and closing the buffer tube 55 when there is no buffer, and preventing debris from falling into the buffer tube 55 and affecting the movement of the resistance block 56;

[0025] The inner wall of the buffer tube 55 is also provided with an elastic column 58 with one end in contact with one side of the resistance block 56, which is conducive to allowing the resistance block 56 to absorb greater impact force and return to its original position through elastic rebound after being compressed;

[0026] The concentrating block 35 is attached to the surface of the buffer tube 55 and is embedded with a friction block 36 , which is beneficial for generating a greater friction resistance when the resistance block 56 is pushed and moved by the impact of the water flow.

[0027] Working principle of the utility model: when the utility model is used, the valve body 1 is connected to the external pipeline, and water flows into the inner cavity of the valve body 1. The threaded rod on the top of the valve plate 2 can be twisted to make the bottom of the valve plate 2 move upward with the movement of the threaded rod. At this time, the valve body 1 can be opened. The threaded rod on the top of the valve plate 2 can be twisted in the opposite direction to make the valve plate 2 drop and close the valve body 1. At the moment when the valve body 1 is closed, the water flow will impact the inner cavity of the valve body 1 due to the inertia of the water flow. At this time, the water flow in the valve body 1 can be pressed into the explosion-proof block 5 through the pressure difference, and then the water flow is introduced into the buffer tube 55 by the water inlet pipe 54, so that the water pressure plate 31 of the resistance block 56 is squeezed by the water flow, and the water flow is concentrated by the concentration block 35. The pressure plate 32 is driven by the water pressure to slide along the inner wall of the buffer tube 55. At this time, the friction force of the pressure plate 32 and the water pressure plate 31 sliding in the buffer tube 55 can be used to offset the impact force of the water flow, so that the impact force of the water flow is greatly weakened, thereby reducing the impact force on the inner cavity of the valve body 1, making the valve less likely to be damaged by the huge pressure of the water flow, and having a longer service life. At the same time, when the valve body 1 is damaged, the bonding plate 51 cooperates with the protection block 52 and the shock-absorbing frame 53 to block the fragments produced by the damage and explosion, and the ejected high-pressure water impacts the bonding plate 51, so that the bonding plate 51 is pushed up and squeezes the shock-absorbing frame 53, so that the high-pressure water will not be ejected directly, but will be blocked and its kinetic energy will be offset by the elastic force of the shock-absorbing frame 53, thereby reducing the flow speed, so that when the valve is damaged, there will be no fragment explosion and high-pressure water spraying, and it is safer to use.

[0028] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0029] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A gate valve with an explosion-proof structure, comprising a valve body (1) and a valve plate (2) whose bottom is fitted and slidably arranged in the valve body (1), wherein the top of the valve plate (2) is meshedly connected with the inner wall of the valve body (1), and characterized in that: The outer wall of the valve body (1) is coated with an explosion-proof block (5) which is in communication with the inner cavity of the valve body (1). When the inner cavity of the valve body (1) is quickly closed, the explosion-proof block (5) provides a buffer and blocks splashes and buffers the high-pressure jet of water when the valve body (1) explodes.

2. The gate valve with explosion-proof structure according to claim 1, characterized in that: A connecting flange (3) is provided at the end of the valve body (1).

3. The gate valve with explosion-proof structure according to claim 1, characterized in that: A twist handle (4) is provided at the top end of the valve plate.

4. The gate valve with explosion-proof structure according to claim 1, characterized in that: The explosion-proof block (5) comprises a bonding plate (51) arranged on the outer wall of the valve body (1) and a protection block (52) arranged on the bonding plate (51), a shock-absorbing frame (53) being arranged between the bonding plate (51) and the protection block (52), and an impact tube penetrating the protection block (52) having a bottom end connected to the inner cavity of the valve body (1) passing through.

5. The gate valve with explosion-proof structure according to claim 4 is characterized in that: The impact pipe comprises a water inlet pipe (54) whose bottom end is connected to the valve body (1) and a buffer pipe (55) whose end is connected to the top of the water inlet pipe (54) and penetrates the protection block (52), and a resistance block (56) is slidably provided in the buffer pipe.

6. The gate valve with explosion-proof structure according to claim 5, characterized in that: An opening and closing piece (57) is movably engaged at the other end of the buffer tube.

7. The gate valve with explosion-proof structure according to claim 5, characterized in that: The inner wall of the buffer tube (55) is also provided with an elastic column (58) with one end in contact with one side of the resistance block (56).

8. The gate valve with explosion-proof structure according to claim 5, characterized in that: The resistance block (56) comprises a water pressure plate (31) slidably arranged on the inner wall of the buffer tube (55) and a pressure plate (32) arranged on one side of the water pressure plate (31), a buffer frame (33) is arranged between the water pressure plate (31) and the pressure plate (32), and a central block (35) is arranged at the upper and lower ends of the other side of the water pressure plate (31) and is in contact with the inner wall of the buffer tube (55).

9. The gate valve with explosion-proof structure according to claim 8, characterized in that: The concentrating block (35) is attached to the surface of the buffer tube (55) and a friction block (36) is embedded therein.

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