A threaded connection explosion-proof breakaway valve with guide structure

Abstract

This utility model discloses a threaded connection explosion-proof breakaway valve with a guide structure, relating to the field of breakaway valve technology. It includes a first valve body, a breakaway bolt, and a second valve body. Both the first and second valve bodies have external threads on their outer sides. The first and second valve bodies are connected to the pipe thread via the external threads, and are fixedly connected by the breakaway bolt. This utility model works by breaking the breakaway bolt when the pressure exceeds a set breaking force, causing the first and second valve bodies to separate. This releases the pressure on the return spring and the fixed spring, pushing the valve core and guide block to move horizontally. The guide rod then slides inside the fixed rod to guide the moving valve core, preventing positional displacement and ensuring that the valve cores at both ends of the first and second valve bodies quickly align and close after breakage, preventing residual liquid leakage.

Description

Technical Field

[0001] This utility model relates to the field of breakaway valve technology, and in particular to a threaded connection explosion-proof breakaway valve with a guide structure. Background Technology

[0002] A breakaway valve is a device that, under specified conditions and within a specified tensile force range, reduces media leakage and stops media flow by isolating between equipment. When the tensile force on the breakaway valve exceeds a preset value, the breakaway bolt breaks, the valve body components on both sides separate, and the valve core closes under the action of the valve core spring force, preventing liquid leakage in the pipeline. It is suitable for conveying systems that deliver hydrocarbons, solvents, hydrocarbons, and chemicals to vehicles, ships, light aircraft, or mobile tank containers.

[0003] An explosion-proof breakaway valve with announcement number CN217634093U includes a first valve body, a second valve body, a first valve core assembly, a second valve core assembly, and a breakaway bolt. The first valve body and the second valve body are detachably connected by the breakaway bolt. The first valve core assembly includes a first valve shaft, a first spring, a first valve core, and a first soft sealing ring. The second valve core assembly includes a second valve shaft, a second spring, a second valve core, and a second soft sealing ring. When the first valve shaft abuts against the second valve shaft, the first spring and the second spring are compressed. After the pressure exceeds the set breakaway force, the breakaway bolt breaks. The first valve shaft and the first valve core, as well as the second valve shaft and the second valve core, move towards each other under the action of the first spring and the second spring, respectively, causing deformation of the first soft sealing ring and the second soft sealing ring, thereby sealing the first valve core and the second valve core. This can prevent sparks from being generated during contact with the first valve body and the second valve body.

[0004] However, existing explosion-proof breakaway valves still have the following defects in use: In the above-mentioned existing technology, the first valve shaft and the first valve core, the second valve shaft and the second valve core move towards each other under the action of the first spring and the second spring, respectively, thereby forming a seal on the opening side of the first cavity and the opening side of the second cavity. However, in actual use, the above operation does not have a guiding function, which makes it impossible for the first valve core and the second valve core to maintain linear movement, resulting in positional deviation, which in turn leads to sealing failure and affects subsequent operations. Utility Model Content

[0005] The purpose of this utility model is to provide a threaded explosion-proof breakaway valve with a guide structure to solve the problem mentioned in the background art that the existing threaded explosion-proof breakaway valves do not have a guiding function during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a threaded explosion-proof pull-off valve with a guide structure, comprising a first valve body, a pull-off bolt, and a second valve body. External threads are provided on the outer sides of both the first and second valve bodies. Both the first and second valve bodies are connected to the pipe thread through the external threads. Both the first and second valve bodies are fixedly connected by the pull-off bolt.

[0007] Both the first and second valve bodies have valve frames fixed inside, and each valve frame has a guide mechanism on one side. Each valve frame has a damping sleeve on one side, and each damping sleeve has a valve stem slidably mounted inside. Each valve stem has a valve core fixed to its outer side, and each valve core has a sealing gasket on one side. Each sealing gasket has a limit mechanism on one side. Each damping sleeve has a return spring evenly wound around its outer side, and one side of the return spring is fixedly connected to one side of the valve core. Both the first and second valve bodies have baffles fixed inside.

[0008] Furthermore, the guiding mechanism includes a fixed rod, which is disposed on one side of the valve frame. A fixed spring is fixed inside the fixed rod, and a guide block is disposed on one side of the fixed spring. A guide rod is fixed on one side of the guide block.

[0009] Furthermore, the guide blocks are provided in two sets, each set of guide blocks is symmetrically distributed, and the cross-section of each set of guide blocks is circular. The outer edge of each set of guide blocks is slidably attached to the inner wall of the fixing rod.

[0010] Furthermore, the fixing springs are provided in two sets, with two fixing springs in each set, and each set of fixing springs is in a compressed state inside the fixing rod.

[0011] Furthermore, the limiting mechanism includes a receiving groove, which is opened inside the valve core. Limiting blocks are attached to both sides of the receiving groove with glue. A fixing block is provided inside the receiving groove, and a limiting rod is fixed to one side of the fixing block. One end of the limiting rod is fixedly connected to the sealing gasket.

[0012] Furthermore, multiple limiting rods are provided, and the multiple limiting rods are distributed in a ring shape.

[0013] Furthermore, multiple fixing blocks and limiting blocks are provided, and the cross-section of each fixing block and limiting block is circular, and the material of each fixing block and limiting block is rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the threaded connection explosion-proof pull-out valve with guide structure not only realizes the guiding function, but also has the limiting function;

[0015] 1. When the pressure exceeds the set breaking force, the break bolt breaks, thereby separating the first valve body and the second valve body. This causes the force on the return spring and the fixed spring to disappear, pushing the valve core and the guide block to move horizontally. This causes the guide rod to slide inside the fixed rod to guide the moving valve core and prevent it from shifting in position. This ensures that the valve cores at both ends of the first and second valve bodies quickly align and close after breaking, preventing residual liquid leakage.

[0016] By allowing the valve stem to slide inside the return spring, the moving valve core can be further guided to maintain linear motion. It can also buffer the force generated by the return spring and the fixed spring during the return process, thereby preventing large impact forces from hitting the baffle, thus improving the service life of the baffle and reducing maintenance and replacement costs.

[0017] 2. By setting two limit blocks, the limit rod can be easily limited under the action of the fixed block, which in turn makes it easier to limit the sealing gasket. This prevents the sealing gasket from being affected by factors such as air pressure when the valve core squeezes the sealing gasket, thus avoiding the sealing gasket moving away from the valve core and improving its sealing performance during use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of the first valve body of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the guiding mechanism of this utility model;

[0023] Figure 5 This is a three-dimensional structural schematic diagram of the valve core of this utility model in front view cross section;

[0024] Figure 6 This is a three-dimensional structural schematic diagram of the sealing gasket of this utility model, showing its main cross-sectional view.

[0025] The reference numerals in the figure are as follows: 1. First valve body; 2. Valve frame; 3. Damping sleeve; 4. Return spring; 5. Guide mechanism; 501. Fixed rod; 502. Guide rod; 503. Guide block; 504. Fixed spring; 6. Valve core; 7. Pull-out bolt; 8. Baffle; 9. Second valve body; 10. Valve stem; 11. Limiting mechanism; 1101. Limiting rod; 1102. Fixed block; 1103. Limiting block; 1104. Receiving groove; 12. Sealing gasket. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please see Figures 1-6 The present invention provides the following technical solution:

[0028] Example 1: To address the problem of existing technologies lacking guidance functionality during use, the following technical solution is disclosed. Please refer to the following for details. Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a threaded explosion-proof breakaway valve with a guide structure includes a first valve body 1, a breakaway bolt 7, and a second valve body 9. Both the first valve body 1 and the second valve body 9 have external threads on their outer sides. The first valve body 1 and the second valve body 9 are connected to the pipe thread via the external threads. The first valve body 1 and the second valve body 9 are fixedly connected by the breakaway bolt 7. A valve frame 2 is fixed inside both the first valve body 1 and the second valve body 9, and a guide mechanism 5 is provided on one side of each valve frame 2. The guide mechanism 5 includes a fixing rod 501, which is located on one side of the valve frame 2 and fixes... A fixing spring 504 is fixed inside the rod 501, and a guide block 503 is provided on one side of the fixing spring 504. A guide rod 502 is fixed on one side of the guide block 503. There are two sets of guide blocks 503. Each set of guide blocks 503 is symmetrically distributed, and the cross-section of each set of guide blocks 503 is circular. The outer edge of each set of guide blocks 503 slides against the inner wall of the fixing rod 501. There are two sets of fixing springs 504. Each set of fixing springs 504 has two springs, and each set of fixing springs 504 is in a compressed state inside the fixing rod 501.

[0029] In this embodiment, when the pressure exceeds the set breaking force, the breaking bolt 7 breaks, and the first valve body 1 and the second valve body 9 separate. This causes the two valve cores 6 to move towards each other under the action of the return spring 4 until the two valve cores 6 respectively come into contact with the two baffles 8, thus forming a seal on the opening side of the first valve body 1 and the opening side of the second valve body 9 to prevent residual liquid leakage. At the same time as the valve core 6 moves, the valve stem 10 slides inside the damping sleeve 3, thus initially limiting and guiding the moving valve core 6. At the same time as the valve core 6 moves, the limiting force on the fixing spring 504 disappears, thereby pushing the guide block 503 to slide inside the fixing rod 501, and then causing the guide rod 502 to move horizontally to further guide the moving valve core 6. This can keep the valve core 6 moving in a straight line, effectively avoiding the valve core 6 shaking due to air pressure, and avoiding the impact and sparks generated during contact with the first valve body 1 and the second valve body 9, thus achieving the purpose of explosion protection.

[0030] Example 2 differs from Example 1 in that it also features a limiting function during use. Therefore, the following technical solution is disclosed. Please refer to the details. Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, a damping sleeve 3 is provided on one side of the valve frame 2. A valve stem 10 is slidably arranged inside the damping sleeve 3. A valve core 6 is fixed to the outside of the valve stem 10. A sealing gasket 12 is provided on one side of the valve core 6. A limiting mechanism 11 is provided on one side of the sealing gasket 12. The limiting mechanism 11 includes a receiving groove 1104, which is opened inside the valve core 6. Limiting blocks 1103 are glued to both sides of the receiving groove 1104. A fixing block 1102 is provided inside the receiving groove 1104, and a limiting rod 1 is fixed to one side of the fixing block 1102. 101, one end of the limiting rod 1101 is fixedly connected to the sealing gasket 12. Multiple limiting rods 1101 are provided and are arranged in a ring. Multiple fixing blocks 1102 and limiting blocks 1103 are provided. The cross-section of multiple fixing blocks 1102 and limiting blocks 1103 is circular and the material of multiple fixing blocks 1102 and limiting blocks 1103 is rubber. The outer side of the damping sleeve 3 is evenly wound with a return spring 4, and one side of the return spring 4 is fixedly connected to one side of the valve core 6. Baffles 8 are fixed inside the first valve body 1 and the second valve body 9.

[0031] In this embodiment, pushing the sealing gasket 12 causes the limiting rod 1101 to move horizontally. Simultaneously, the limiting rod 1101 moves horizontally, causing the fixing block 1102 to move horizontally as well. This allows the fixing block 1102 to insert into the receiving groove 1104. Continuous pushing of the sealing gasket 12 causes the limiting rod 1101 to push the fixing block 1102, compressing the limiting block 1103. This compresses the limiting block 1103 until one side of the fixing block 1102 and one side of the receiving groove 1104 are in contact. The limiting block 1103 then recovers its deformation, facilitating the limiting of the fixing block 1102. This operation effectively limits the sealing gasket 12, preventing positional movement and improving its sealing performance during use, thus avoiding sealing failure due to displacement.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A threaded explosion-proof pull-off valve with a guide structure, comprising a first valve body (1), a pull-off bolt (7), and a second valve body (9), wherein the outer sides of the first valve body (1) and the second valve body (9) are provided with external threads, the first valve body (1) and the second valve body (9) are connected to the pipe thread through the external threads, and the first valve body (1) and the second valve body (9) are fixedly connected by the pull-off bolt (7); characterized in that The first valve body (1) and the second valve body (9) are both fixed with valve frames (2), and a guide mechanism (5) is provided on one side of each valve frame (2). A damping sleeve (3) is provided on one side of each valve frame (2). A valve stem (10) is slidably provided inside each damping sleeve (3). A valve core (6) is fixed on the outside of each valve stem (10). A sealing gasket (12) is provided on one side of each valve core (6). A limit mechanism (11) is provided on one side of each sealing gasket (12). A return spring (4) is evenly wound on the outside of each damping sleeve (3). One side of the return spring (4) is fixedly connected to one side of the valve core (6). A baffle (8) is fixed inside the first valve body (1) and the second valve body (9).

2. A threadedly connected rupture disc valve with a guiding structure according to claim 1, characterized in that: The guide mechanism (5) includes a fixed rod (501), and the fixed rod (501) is disposed on one side of the valve frame (2). A fixed spring (504) is fixed inside the fixed rod (501), and a guide block (503) is disposed on one side of the fixed spring (504). A guide rod (502) is fixed on one side of the guide block (503).

3. A threadedly connected rupture disc valve with a guiding structure according to claim 2, characterized in that: The guide blocks (503) are provided in two sets. Each set of guide blocks (503) is symmetrically distributed, and the cross-section of each set of guide blocks (503) is circular. The outer edge of each set of guide blocks (503) is slidably attached to the inner wall of the fixing rod (501).

4. The threaded connection explosion-proof breakaway valve with guide structure according to claim 2, characterized in that: The fixed spring (504) is provided in two sets, and each set of the fixed spring (504) has two springs, and each set of the fixed spring (504) is in a compressed state inside the fixed rod (501).

5. A threadedly connected rupture disc valve with a guiding structure according to claim 1, characterized in that: The limiting mechanism (11) includes a receiving groove (1104), which is located inside the valve core (6). Limiting blocks (1103) are glued to both sides of the receiving groove (1104). A fixing block (1102) is provided inside the receiving groove (1104), and a limiting rod (1101) is fixed to one side of the fixing block (1102). One end of the limiting rod (1101) is fixedly connected to the sealing gasket (12).

6. A threadedly connected rupture disc valve with a guiding structure according to claim 5, characterized in that: Multiple limiting rods (1101) are provided, and the multiple limiting rods (1101) are arranged in a ring.

7. A threadedly connected rupture disc valve with a guiding structure according to claim 5, characterized in that: Multiple fixing blocks (1102) and limiting blocks (1103) are provided. The cross-section of the multiple fixing blocks (1102) and limiting blocks (1103) is circular, and the multiple fixing blocks (1102) and limiting blocks (1103) are made of rubber.

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