Anti-explosion gate valve

Abstract

The utility model relates to the technical field of sluice valves, in particular to an anti-explosion sluice valve which comprises a sluice valve body, a pressure relief pipe is fixed on the sluice valve body, the pressure relief pipe is arranged close to a water inlet of the sluice valve body and extends into the sluice valve body, a flange is integrally formed in the pressure relief pipe, a plug block and a check block are arranged in the pressure relief pipe, and the plug block and the check block are arranged in the sluice valve body. A sealing gasket is fixed to the blocking block, a guide rod is integrally formed on the side, away from the flange, of the blocking block, the guide rod is sleeved with a spring, a through hole matched with the guide rod and a plurality of pressure relief holes are formed in the check block, and a supporting piece and a deslagging mechanism are arranged on the side, away from the water inlet, of the pressure relief pipe. When liquid in the gate valve body expands in volume, the pressure difference between the inside of the gate valve body and the outside is increased, pressure in the gate valve body pushes the blocking block to move away from the gate valve body, the spring is compressed, the blocking block does not block the flange any more, pressure relief of the gate valve body is facilitated, and the gate valve body is prevented from exploding.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, and particularly relates to an explosion-proof gate valve. Background Art

[0002] A gate valve refers to a gate-shaped valve used to cut off and regulate the flow rate, and is installed on the outlet pipelines of centrifugal pumps and mixed-flow pumps. The opening and closing member of the gate valve is a gate plate, and the moving direction of the gate plate is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be used for regulation and throttling. After the gate valve is closed for a period of time, the medium often still exists in the closed cavity. When the gate valve works in a high-temperature and high-pressure environment, generally, the liquid inside the gate valve and the pipeline expands in volume, the pressure difference between the inside of the gate valve and the outside increases, and even the gate valve may explode. Therefore, an explosion-proof gate valve is proposed to prevent the gate valve from exploding. Content of the Utility Model

[0003] In view of the problems in the prior art, the utility model provides an explosion-proof gate valve.

[0004] The technical solution adopted by the utility model to solve its technical problems is an explosion-proof gate valve, which includes a gate valve body. A pressure relief pipe is fixed on the gate valve body. The pressure relief pipe is arranged close to the water inlet of the gate valve body and extends into the gate valve body. A flange is integrally formed in the pressure relief pipe. A plug block and a stop block are arranged in the pressure relief pipe. A sealing gasket is fixed on the plug block. A guide rod is integrally formed on the side of the plug block away from the flange. A spring is sleeved on the guide rod. A through hole adapted to the guide rod and a plurality of pressure relief holes are formed in the stop block. A support member and a slag discharging mechanism are arranged on the side of the pressure relief pipe away from the water inlet.

[0005] By adopting the above technical solution, when the liquid inside the gate valve body expands in volume, the pressure difference between the inside of the gate valve body and the outside increases. The pressure inside the gate valve body pushes the plug block to move away from the gate valve body, the spring is compressed, and the plug block no longer blocks the flange, which is beneficial to the pressure relief of the gate valve body and prevents the gate valve body from exploding. When the pressure inside the gate valve body returns to normal, the spring pushes the plug block to reset, and the plug block and the sealing gasket block the flange.

[0006] Specifically, the support member includes a support seat, a clamping seat and a locking bolt. Installation holes are formed at the four corners of the side of the support seat away from the clamping seat. The clamping seat is sleeved on the gate valve body. Two screw holes adapted to the locking bolt are formed in the clamping seat. A screw hole adapted to the locking bolt is formed at the top end of the support seat. An insertion block is integrally formed at one end of the clamping seat close to the support seat. A slot for the insertion block to insert is arranged on the side of the support seat close to the clamping seat.

[0007] By adopting the above technical solution, loosening the locking bolt on the support and pulling the support can adjust the distance between the support and the gate valve body as needed. Tightening the locking bolt can fix the support on the wall or equipment on one side of the gate valve body using the bolt. The support, insertion block, and clamping seat can support the gate valve body, improving the stability of the gate valve body.

[0008] Specifically, a protective pad is fixed inside the clamping seat.

[0009] By adopting the above technical solution, the protective pad can protect the gate valve body and prevent the clamping seat from pinching the gate valve body.

[0010] Specifically, the slag discharge mechanism includes a conduit and a protective cover. The conduit is connected to the gate valve body, and a protective cover is threadedly connected to the bottom end of the conduit.

[0011] By adopting the above technical solution, when the gate valve body conveys the medium, the heavier impurities in the medium flow at the pipe wall of the gate valve body, and the heavier impurities enter the conduit. Unscrewing the protective cover can discharge the impurities in the conduit.

[0012] Specifically, a sealing ring is fixed inside the protective cover.

[0013] By adopting the above technical solution, the setting of the sealing ring can improve the sealing performance between the protective cover and the conduit.

[0014] Advantages of the present utility model:

[0015] (1) For the explosion-proof gate valve of the present utility model, when the volume of the liquid inside the gate valve body expands, the pressure difference between the inside and the outside of the gate valve body increases. The pressure inside the gate valve body pushes the plug away from the gate valve body, the spring is compressed, and the plug no longer blocks the flange, facilitating the pressure relief of the gate valve body and preventing the gate valve body from exploding. When the pressure inside the gate valve body returns to normal, the spring pushes the plug back to its original position, and the plug and the sealing pad block the flange.

[0016] (2) For the explosion-proof gate valve of the present utility model, loosening the locking bolt on the support and pulling the support can adjust the distance between the support and the gate valve body as needed. Tightening the locking bolt can fix the support on the wall or equipment on one side of the gate valve body using the bolt. The support, insertion block, and clamping seat can support the gate valve body, improving the stability of the gate valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further illustrates the present utility model in conjunction with the drawings and embodiments.

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2Cross-sectional view of the pressure relief pipe of the present utility model;

[0020] Figure 3 Of the present utility model Figure 1 Enlarged view of the structure at position A;

[0021] Figure 4 Cross-sectional view of the combination of the conduit and the protective cover of the present utility model.

[0022] In the figure: 1, gate valve body; 2, support member; 3, support; 4, clamp seat; 40, insertion block; 41, protective pad; 42, locking bolt; 5, slag discharge mechanism; 6, conduit; 7, protective cover; 70, sealing ring; 8, pressure relief pipe; 9, flange; 10, plug; 11, sealing gasket; 12, guide rod; 13, stop block; 14, spring. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] To prevent the explosion of the gate valve body 1, as an embodiment of the present utility model, as Figure 1 , Figure 2 shown, an explosion-proof gate valve of the present utility model includes a gate valve body 1, a pressure relief pipe 8 is fixedly welded on the gate valve body 1, the pressure relief pipe 8 is arranged near the water inlet of the gate valve body 1, the pressure relief pipe 8 extends into the gate valve body 1, a flange 9 is integrally formed in the pressure relief pipe 8, a plug 10 and a stop block 13 are arranged in the pressure relief pipe 8, a sealing gasket 11 is fixed on the plug 10, a guide rod 12 is integrally formed on the side of the plug 10 away from the flange 9, a spring 14 is sleeved on the guide rod 12, a through hole adapted to the guide rod 12 and a plurality of pressure relief holes are formed in the stop block 13, and a support member 2 and a slag discharge mechanism 5 are arranged on the side of the pressure relief pipe 8 away from the water inlet.

[0025] During use, when the volume of the liquid inside the gate valve body 1 expands, the pressure difference between the inside and the outside of the gate valve body 1 increases, the pressure inside the gate valve body 1 pushes the plug 10 to move away from the gate valve body 1, the spring 14 is compressed, and the plug 10 no longer blocks the flange 9, which is beneficial to the pressure relief of the gate valve body 1 and prevents the explosion of the gate valve body 1. When the pressure inside the gate valve body 1 returns to normal, the spring 14 pushes the plug 10 to reset, and the plug 10 and the sealing gasket 11 block the flange 9.

[0026] To improve the stability of the gate valve body 1, exemplarily, as Figure 1 , Figure 3As shown, the support member 2 includes a support base 3, a clamping seat 4, and a locking bolt 42. Mounting holes are provided at the four corners on the side of the support base 3 away from the clamping seat 4. The clamping seat 4 is sleeved on the gate valve body 1. Two screw holes adapted to the locking bolt 42 are provided on the clamping seat 4. A screw hole adapted to the locking bolt 42 is provided at the top of the support base 3. An insertion block 40 is integrally formed at one end of the clamping seat 4 close to the support base 3. A slot for inserting the insertion block 40 is provided on the side of the support base 3 close to the clamping seat 4.

[0027] During use, loosen the locking bolt 42 on the support base 3 and pull the support base 3. The distance between the support base 3 and the gate valve body 1 can be adjusted as needed. Tighten the locking bolt 42 to fix the support base 3 to the wall or equipment on one side of the gate valve body 1 using the bolt. The support base 3, the insertion block 40, and the clamping seat 4 can support the gate valve body 1, improving the stability of the gate valve body 1.

[0028] For the protection of the gate valve body 1, by way of example, as Figure 3 shown, a protective pad 41 is fixed in the clamping seat 4 by an adhesive.

[0029] For convenient slag discharge, by way of example, as Figure 1 、 Figure 4 shown, the slag discharge mechanism 5 includes a conduit 6 and a protective cover 7. The conduit 6 is welded to the gate valve body 1. A protective cover 7 is threadedly connected to the bottom end of the conduit 6.

[0030] During use, when the gate valve body 1 conveys the medium, the heavier impurities in the medium flow at the pipe wall of the gate valve body 1. The heavier impurities enter the conduit 6. Unscrew the protective cover 7 to discharge the impurities in the conduit 6.

[0031] For improving the sealing performance between the conduit 6 and the protective cover 7, by way of example, as Figure 4 shown, a sealing ring 70 is fixed in the protective cover 7 by an adhesive.

[0032] When the present utility model is in use, loosen the locking bolt 42 on the support base 3 and pull the support base 3. The distance between the support base 3 and the gate valve body 1 can be adjusted as needed. Tighten the locking bolt 42 to fix the support base 3 to the wall or equipment on one side of the gate valve body 1 using the bolt. The support base 3, the insertion block 40, and the clamping seat 4 can support the gate valve body 1, improving the stability of the gate valve body 1;

[0033] When the volume of the liquid inside the gate valve body 1 expands, the pressure difference between the inside and the outside of the gate valve body 1 increases. The pressure inside the gate valve body 1 pushes the plug 10 to move away from the gate valve body 1, and the spring 14 is compressed. The plug 10 no longer blocks the flange 9, which is conducive to the pressure relief of the gate valve body 1 and prevents the gate valve body 1 from exploding. After the pressure inside the gate valve body 1 returns to normal, the spring 14 pushes the plug 10 to reset, and the plug 10 and the gasket 11 block the flange 9;

[0034] The heavier impurities in the liquid flow at the pipe wall of the gate valve body 1, and the heavier impurities enter the conduit 6. Unscrew the protective cover 7 to discharge the impurities in the conduit 6.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents. The content not described in detail in the present invention belongs to the prior art well-known to those skilled in the art.

Claims

1. An explosion-proof gate valve, characterized in that: The invention comprises a gate valve body (1), a pressure relief pipe (8) being fixed on the gate valve body (1), the pressure relief pipe (8) being arranged near the water inlet of the gate valve body (1), the pressure relief pipe (8) extending into the gate valve body (1), a flange (9) being integrally formed in the pressure relief pipe (8), a block (10) and a block (13) being arranged in the pressure relief pipe (8), a sealing gasket (11) being fixed on the block (10), a guide rod (12) being integrally formed on the side of the block (10) away from the flange (9), a spring (14) being sleeved on the guide rod (12), a through hole matching the guide rod (12) and a plurality of pressure relief holes being opened on the block (13), and a support member (2) and a slag discharge mechanism (5) being arranged on the side of the pressure relief pipe (8) away from the water inlet.

2. An explosion-proof gate valve according to claim 1, characterized in that: The support member (2) comprises a support (3), a clamping seat (4) and a locking bolt (42); the support (3) is provided with mounting holes at four corners on a side away from the clamping seat (4); the clamping seat (4) is sleeved on the gate valve body (1); the clamping seat (4) is provided with two screw holes adapted to the locking bolt (42); the top of the support (3) is provided with a screw hole adapted to the locking bolt (42); an insert block (40) is integrally formed at one end of the clamping seat (4) close to the support (3); and a slot for inserting the insert block (40) is provided on a side of the support (3) close to the clamping seat (4).

3. An explosion-proof gate valve according to claim 2, characterized in that: A protective pad (41) is fixed inside the clamp seat (4).

4. The explosion-proof gate valve according to claim 1, characterized in that: The slag discharge mechanism (5) comprises a conduit (6) and a protective cover (7); the conduit (6) is connected to the gate valve body (1); and the bottom end of the conduit (6) is threadedly connected to the protective cover (7).

5. An explosion-proof gate valve according to claim 4, characterized in that: A sealing ring (70) is fixed inside the protective cover (7).

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