Locking type two-way explosion-proof valve

Abstract

The utility model relates to a safety valve. The utility model relates to the technical field of balance valves, and discloses a locking type two-way explosive-proof valve which comprises an explosive-proof valve element, the front side and the rear side of the explosive-proof valve element are fixedly connected with explosive-proof valve pipelines, the outer surface of the explosive-proof valve pipeline on the front side is fixedly sleeved with a first flange, and four first bolt holes are formed in the front side of the first flange; a connecting pipeline is arranged on the front side of the explosion-proof valve pipeline, a second flange is fixedly connected to the outer surface of the connecting pipeline in a sleeving mode, the rear side of the second flange can make contact with the front side of the first flange, a sealing gasket is arranged between the first flange and the second flange, and four second bolt holes are formed in the rear side of the second flange. The first flange and the second flange are provided with the quick disassembly and assembly mechanisms, in this way, the two-way explosion-proof valve can be disassembled and assembled easily and quickly, then time is not wasted on disassembly and assembly of bolts when the two-way explosion-proof valve is overhauled, and the overhauling efficiency of the two-way explosion-proof valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical fields of safety valves and balance valves, and particularly relates to a locking type two-way explosion isolation valve. Background Technique

[0002] In modern industry, the potential danger of dust explosion has increased greatly. The explosion isolation technology can prevent the explosion from spreading from the initial position to other process units, avoid "secondary" or system explosion accidents, and thus reduce the explosion disaster. The locking type two-way explosion isolation valve is a safety device designed to control the energy of the explosion within a certain range in case of explosion, prevent the explosion from spreading from the initial position to other process units, avoid "secondary" or system explosion accidents, and thus reduce the explosion disaster.

[0003] When using the locking type two-way explosion isolation valve, regular inspection and maintenance should be paid attention to ensure its normal operation in case of explosion. However, at present, the two-way explosion isolation valve and the pipeline are connected by bolts. When overhauling the two-way explosion isolation valve, it needs to be disassembled to check its interior. When disassembling and assembling the two-way explosion isolation valve, a long time will be wasted on the disassembly and assembly of the bolts, thus reducing the overhaul efficiency of the two-way explosion isolation valve. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a locking type two-way explosion isolation valve, which has the function of being able to disassemble and assemble the two-way explosion isolation valve simply and quickly, so that no time will be wasted on the disassembly and assembly of the bolts when overhauling the two-way explosion isolation valve, and thus the overhaul efficiency of the two-way explosion isolation valve is improved.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: a locking type two-way explosion isolation valve, including an explosion isolation valve core, explosion isolation valve pipelines are fixedly connected to the front side and the rear side of the explosion isolation valve core, and a first flange is fixedly sleeved on the outer surface of the front explosion isolation valve pipeline;

[0008] The first flange is arranged at a position close to the explosion isolation valve pipeline, and four first bolt holes are opened on the front side of the first flange;

[0009] The four first bolt holes are arranged in a circular array, a connecting pipeline is arranged on the front side of the explosion isolation valve pipeline, and a second flange is fixedly sleeved on the outer surface of the connecting pipeline;

[0010] A gasket is provided between the first flange and the second flange. Four second bolt holes are provided at the rear side of the second flange. A quick disassembly and assembly mechanism is provided on the first flange and the second flange. Through the quick disassembly and assembly mechanism, the first flange and the second flange can be quickly connected and disconnected. The connection structures of the front and rear explosion-proof valve pipes and their connecting components are the same and are symmetrically arranged;

[0011] The quick disassembly and assembly mechanism includes four bolts, four nut grooves, four nuts, four limiting sleeves, an annular groove, a limiting annular groove, a connecting ring and a limiting ring.

[0012] Preferably, the four bolts are respectively arranged at the rear sides of the four first bolt holes, and the front ends of the four bolts respectively extend into the interiors of the four first bolt holes and the four second bolt holes;

[0013] The rear sides of the four bolts are all pentagonal blocks, and the four nut grooves are respectively provided on the front side of the second flange.

[0014] Preferably, the centers of the four nut grooves are the same as those of the four second bolt holes, and the four nuts are respectively arranged in the four nut grooves;

[0015] The four bolts are threadedly connected with the four nuts, and the four limiting sleeves are all rotatably connected to the rear side of the first flange.

[0016] Preferably, the four limiting sleeves are respectively sleeved on the outer surfaces of the four bolts, and the four limiting sleeves are respectively adapted to the four bolts;

[0017] The outer surfaces of the four limiting sleeves are all tooth surfaces, and the annular groove is provided inside the first flange.

[0018] Preferably, the rear wall of the annular groove extends out of the first flange, the limiting annular groove is provided on the outer wall of the annular groove, and the limiting annular groove is communicated with the inside of the annular groove;

[0019] The connecting ring is arranged at the rear side of the first flange, and the front side of the connecting ring rotatably extends into the inside of the annular groove.

[0020] Preferably, the limiting ring is rotatably connected inside the limiting annular groove, and the inner surface of the limiting ring is fixedly connected with the outer surface of the connecting ring;

[0021] The inner surface of the connecting ring at the rear side of the first flange is a tooth surface, and the connecting ring can be meshed and connected with the four limiting sleeves.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present utility model provides a locking type two-way explosion-proof valve, which has the following

[0024] Beneficial effects:

[0025] (1). For this locking type two-way explosion-proof valve, when the front connecting ring is rotated, after transmission, the connection state between the front explosion-proof valve pipeline and the front connecting pipeline is released. Then, when the rear connecting ring is rotated, as known above, the connection state between the rear explosion-proof valve pipeline and the rear second flange will also be released. After that, the two-way explosion-proof valve can be repaired. After the repair is completed, the installation of the two-way explosion-proof valve can be completed according to the above method. In this way, the disassembly and assembly of the two-way explosion-proof valve can be carried out simply and quickly, so that time will not be wasted on the disassembly and assembly of bolts during the repair of the two-way explosion-proof valve, thereby improving the repair efficiency of the two-way explosion-proof valve.

[0026] (2). For this locking type two-way explosion-proof valve, four nut grooves are respectively opened on the front side of the second flange. The centers of the four nut grooves are the same as those of the four second bolt holes. Four nuts are respectively arranged inside the four nut grooves. The way that the four bolts are threadedly connected to the four nuts makes it convenient to install the nuts in the nut grooves when installing the bolts and nuts. The nut grooves can limit the nuts, thereby further improving the convenience of connecting the four bolts and the four nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a locking type two-way explosion-proof valve of the present utility model;

[0028] Figure 2 is a schematic cross-sectional connection structure diagram of the first flange of the present utility model;

[0029] Figure 3 is Figure 2 an enlarged schematic view of part A of

[0030] Figure 4 is a schematic connection structure diagram of the connecting pipeline of the present utility model.

[0031] In the figure: 1. Explosion-proof valve core; 2. Explosion-proof valve pipeline; 3. First flange; 4. First bolt hole; 5. Connecting pipeline; 6. Second flange; 7. Second bolt hole; 8. Bolt; 9. Nut groove; 10. Nut; 11. Limit sleeve; 12. Ring groove; 13. Limit ring groove; 14. Connecting ring; 15. Limit ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer toFigures 1 to 4 , the present utility model provides a new technical solution: a locking type two-way explosion-proof valve, which includes an explosion-proof valve core 1. Explosion-proof valve pipes 2 are fixedly connected to both the front side and the rear side of the explosion-proof valve core 1. The explosion-proof valve core 1, the two explosion-proof valve pipes 2 and the internal connection structure thereof are existing structures, so no more explanations will be given. A first flange 3 is fixedly sleeved on the outer surface of the front explosion-proof valve pipe 2. The first flange 3 is arranged at a position close to the front of the explosion-proof valve pipe 2. Four first bolt holes 4 are opened on the front side of the first flange 3. The four first bolt holes 4 are arranged in a circular array. A connecting pipe 5 is arranged on the front side of the explosion-proof valve pipe 2. A second flange 6 is fixedly sleeved on the outer surface of the connecting pipe 5. The rear side of the second flange 6 can be in contact with the front side of the first flange 3;

[0034] A gasket is arranged between the first flange 3 and the second flange 6. Four second bolt holes 7 are opened on the rear side of the second flange 6. The four second bolt holes 7 are in the same positions as the four first bolt holes 4. A quick disassembly and assembly mechanism is arranged on the first flange 3 and the second flange 6. Through the quick disassembly and assembly mechanism, the first flange 3 and the second flange 6 can be quickly connected and disconnected. The connection structures of the front and rear two explosion-proof valve pipes 2 and their connecting components are the same and are symmetrically arranged;

[0035] The following explanations are mainly based on the front quick disassembly and assembly mechanism. The quick disassembly and assembly mechanism includes four bolts 8, four nut grooves 9, four nuts 10, four limit sleeves 11, a ring groove 12, a limit ring groove 13, a connecting ring 14 and a limit ring 15.

[0036] Furthermore, the four bolts 8 are respectively arranged at the rear sides of the four first bolt holes 4. The front ends of the four bolts 8 respectively extend into the interiors of the four first bolt holes 4 and the four second bolt holes 7. The rear sides of the four bolts 8 are all pentagonal blocks. The four nut grooves 9 are respectively opened on the front side of the second flange 6. The four nut grooves 9 are in the same center positions as the four second bolt holes 7. The four nuts 10 are respectively arranged in the four nut grooves 9. The four bolts 8 are threadedly connected with the four nuts 10. The four limit sleeves 11 are all rotatably connected to the rear side of the first flange 3. The four limit sleeves 11 are respectively sleeved on the outer surfaces of the four bolts 8. The four limit sleeves 11 are respectively adapted to the four bolts 8;

[0037] The outer surfaces of the four limit sleeves 11 are all tooth surfaces. The ring groove 12 is opened in the first flange 3. The rear wall of the ring groove 12 extends out of the first flange 3. The limit ring groove 13 is opened on the outer wall of the ring groove 12. The limit ring groove 13 is communicated with the interior of the ring groove 12. The connecting ring 14 is arranged at the rear side of the first flange 3. The front side of the connecting ring 14 rotatably extends into the interior of the ring groove 12. The limit ring 15 is rotatably connected to the interior of the limit ring groove 13. The inner surface of the limit ring 15 is fixedly connected to the outer surface of the connecting ring 14;

[0038] The inner surface of the connecting ring 14 at the rear side of the first flange 3 is a tooth surface, and the connecting ring 14 can be meshed and connected with the four limiting sleeves 11.

[0039] Furthermore, when the two-way explosion-proof valve needs to be overhauled, the staff rotates the front connecting ring 14, and the front connecting ring 14 drives the limiting ring 15 to start rotating synchronously. The limiting ring 15 will be limited to rotate inside the limiting ring groove 13. At the same time, the connecting ring 14 will drive the four meshed limiting sleeves 11 to rotate, and the four limiting sleeves 11 drive the four bolts 8 inside them to rotate synchronously. Then, the threaded connection between the four bolts 8 and the four nuts 10 starts to be released. After the threaded connection between the bolts 8 and the nuts 10 is completely released;

[0040] The four nuts 10 will move out from the inside of the four nut grooves 9, and then the four bolts 8 can be taken out from the inside of the four limiting sleeves 11. Thus, the connection state between the front explosion-proof valve pipe 2 and the front connecting pipe 5 is released. Then, rotate the rear connecting ring 14. As known above, the connection state between the rear explosion-proof valve pipe 2 and the rear second flange 6 will also be released. Then, the two-way explosion-proof valve can be overhauled. After the overhaul is completed, the two-way explosion-proof valve can be installed according to the above method. In this way, the two-way explosion-proof valve can be disassembled and assembled simply and quickly, so that time will not be wasted on the disassembly and assembly of the bolts 8 during the overhaul of the two-way explosion-proof valve, thereby improving the overhaul efficiency of the two-way explosion-proof valve.

[0041] Working principle: When the two-way explosion-proof valve needs to be overhauled, the staff rotates the front connecting ring 14, and the front connecting ring 14 drives the limiting ring 15 to start rotating synchronously. The limiting ring 15 will be limited to rotate inside the limiting ring groove 13. At the same time, the connecting ring 14 will drive the four meshed limiting sleeves 11 to rotate, and the four limiting sleeves 11 drive the four bolts 8 inside them to rotate synchronously. Then, the threaded connection between the four bolts 8 and the four nuts 10 starts to be released. After the threaded connection between the bolts 8 and the nuts 10 is completely released, the four nuts 10 will move out from the inside of the four nut grooves 9, and then the four bolts 8 can be taken out from the inside of the four limiting sleeves 11. Thus, the connection state between the front explosion-proof valve pipe 2 and the front connecting pipe 5 is released. Then, rotate the rear connecting ring 14. As known above, the connection state between the rear explosion-proof valve pipe 2 and the rear second flange 6 will also be released. Then, the two-way explosion-proof valve can be overhauled. After the overhaul is completed, the two-way explosion-proof valve can be installed according to the above method.

[0042] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A locking bidirectional explosion-proof valve, comprising an explosion-proof valve core (1), the front and rear sides of the explosion-proof valve core (1) are fixedly connected to explosion-proof valve pipes (2), and the outer surface of the front explosion-proof valve pipe (2) is fixedly sleeved with a first flange (3); The first flange (3) is arranged at a front position of the explosion-proof valve pipeline (2), and four first bolt holes (4) are provided on the front side of the first flange (3); The four first bolt holes (4) are arranged in a circular array, a connecting pipe (5) is arranged on the front side of the explosion-proof valve pipe (2), and a second flange (6) is fixedly sleeved on the outer surface of the connecting pipe (5); A sealing gasket is arranged between the first flange (3) and the second flange (6), and four second bolt holes (7) are opened on the rear side of the second flange (6), characterized in that: The first flange (3) and the second flange (6) are provided with a quick disassembly mechanism, through which the first flange (3) and the second flange (6) can be quickly connected and disconnected, and the connection structures of the front and rear explosion-proof valve pipelines (2) and their connection components are the same and symmetrically arranged; The quick disassembly and assembly mechanism comprises four bolts (8), four nut grooves (9), four nuts (10), four limiting sleeves (11), a ring groove (12), a limiting ring groove (13), a connecting ring (14) and a limiting ring (15).

2. A locking bidirectional explosion-proof valve according to claim 1, characterized in that: The four bolts (8) are respectively arranged at the rear sides of the four first bolt holes (4), and the front ends of the four bolts (8) extend into the interiors of the four first bolt holes (4) and the four second bolt holes (7) respectively; The rear sides of the four bolts (8) are all pentagonal blocks, and the four nut grooves (9) are respectively arranged on the front side of the second flange (6).

3. A locking bidirectional explosion-proof valve according to claim 2, characterized in that: The four nut grooves (9) and the four second bolt holes (7) have the same center position, and the four nuts (10) are respectively arranged inside the four nut grooves (9); The four bolts (8) are threadedly connected to the four nuts (10), and the four limiting sleeves (11) are rotatably connected to the rear side of the first flange (3).

4. A locking bidirectional explosion-proof valve according to claim 3, characterized in that: The four limiting sleeves (11) are respectively sleeved on the outer surfaces of the four bolts (8), and the four limiting sleeves (11) are respectively adapted to the four bolts (8); The outer surfaces of the four limiting sleeves (11) are all toothed surfaces, and the annular groove (12) is arranged inside the first flange (3).

5. The locking bidirectional explosion-proof valve according to claim 4, characterized in that: A first flange (3) extends from the rear wall of the annular groove (12); a limiting annular groove (13) is provided on the outer wall of the annular groove (12); and the limiting annular groove (13) is communicated with the interior of the annular groove (12); The connecting ring (14) is arranged on the rear side of the first flange (3), and the front side of the connecting ring (14) is rotated to extend into the interior of the ring groove (12).

6. The locking bidirectional explosion-proof valve according to claim 1, characterized in that: The limiting ring (15) is rotatably connected to the inside of the limiting ring groove (13), and the inner surface of the limiting ring (15) is fixedly connected to the outer surface of the connecting ring (14); The inner surface of the connecting ring (14) located at the rear side of the first flange (3) is a toothed surface, and the connecting ring (14) can be meshed and connected with the four limiting sleeves (11).

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