Flame arrester for chemical safety production

Abstract

The utility model relates to the technical field of chemical safety production, in particular to a flame arrester for chemical safety production, which comprises an arrester body, the arrester body comprises a flame arrester shell, and a flame arresting core is arranged on the inner side of the flame arrester shell. Through the arrangement of the positioning block and the matching of the positioning rod and the positioning groove, the installation of the fire-retardant core can be positioned, the dislocation of the installation can be avoided, the first movable rod moves on the inner side of the first movable groove, and the elastic property of the first spring is matched, so that the insertion rod can be inserted into and separated from the insertion groove, and the installation is convenient. According to the flame arrester, the positioning rod can be further limited and canceled, so that the flame arresting core can be conveniently fixed and unfixed, the flame arresting core can be conveniently taken out for maintenance or replacement, maintenance and replacement of the flame arresting core are more convenient, repeated disassembly and assembly of the flame arrester shell are not needed, and the flame arresting effect and quality of the flame arresting core can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production safety, in particular to a flame arrester for chemical production safety. Background Art

[0002] Chemical safety refers to a series of activities and measures to prevent accidents and reduce hazards during chemical production. It encompasses every aspect of the chemical production process, including design, operation, maintenance, and monitoring. It aims to ensure workplace safety, protect the personal and property safety of employees, and reduce the risk of environmental pollution. Chemical safety is the lifeline of every chemical company and a prerequisite for its healthy and high-quality development. Flame arresters are commonly used in chemical production to safeguard production operations, prevent fires before they occur, and effectively stop the spread of flames, thereby reducing the probability of fire. A flame arrester is a safety device primarily used to prevent the spread of flames from flammable gases and flammable liquid vapors. It is typically installed in pipelines carrying flammable gases and consists of a flame arrester core, a flame arrester housing, and accessories. There are two main theories about the working principle of a flame arrester: one is based on heat transfer, which reduces the flame temperature below the ignition point; the other is based on the vessel wall effect, which uses the channel wall to reduce the number of free radicals involved in the reaction, thereby preventing the spread of flames. The use of flame arresters can effectively prevent the spread of flames and prevent the fire from expanding into a large-scale fire, thereby reducing casualties and property losses caused by fire accidents. At the same time, it can protect chemical facilities and equipment from damage by fire and explosion, extend their service life, and reduce maintenance and replacement costs.

[0003] In the prior art, when a flame arrester is used, after long-term use, foreign matter is easily attached to the flame arrester core and the flame arrester core is easily blocked. Therefore, the flame arrester needs to be maintained and replaced. Since the flame arrester core is installed inside the flame arrester, it is often necessary to remove the outer shell of the flame arrester before the flame arrester core can be removed during maintenance and replacement. Repeated removal and installation will increase the workload, thereby making the maintenance and replacement of the flame arrester core less convenient. Therefore, in order to solve the above problems, a flame arrester for chemical production safety is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a flame arrester for chemical production safety, so as to solve the problem mentioned in the above background technology that since the fire arrester core is installed inside the flame arrester, it is often necessary to remove the outer shell of the flame arrester in order to remove the fire arrester core during maintenance and replacement. Repeated removal and installation will increase the workload, thereby making the maintenance and replacement of the fire arrester core inconvenient.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a flame arrester for chemical production safety, comprising a device body, the device body comprising a flame arrester shell, a flame arrester core is provided on the inner side of the flame arrester shell, and a connecting flange is fixedly connected to the surface of the flame arrester shell;

[0006] A replacement mechanism is provided on the inner side of the flame arrester housing, and the replacement mechanism includes a connecting block, which is fixedly connected to the surface of the fire arrester core, a positioning rod fixedly connected to the lower surface of the connecting block, a fixed block fixedly connected to the surface of the flame arrester housing, a positioning groove is provided on the inner side of the fixed block, a first movable groove is provided on the inner side of the fixed block, a first spring is fixedly connected to the inner wall of the first movable groove, a first movable rod is fixedly connected to the surface of the first spring, a pull rod is fixedly connected to the end of the first movable rod away from the first spring, an insertion rod is fixedly connected to the surface of the pull rod, and a slot is provided on the surface of the positioning rod.

[0007] Preferably, the replacement mechanism also includes a positioning block, which is fixedly connected to the inner wall of the flame arrester housing, and the fire arrester core moves inside the positioning block and the flame arrester housing. The surface of the fire arrester core is fixedly connected to a first rubber pad, and the lower surface of the connecting block is fixedly connected to a second rubber pad.

[0008] Preferably, the positioning rods are in two groups and fixedly connected to the connecting blocks, the fixing blocks are in two groups and fixedly connected to the flame arrester housing, and the positioning rods are movably connected to the positioning grooves.

[0009] Preferably, the first movable rod moves inside the first movable groove, the insertion rod moves inside the fixed block, and one end of the first spring away from the first movable groove is fixedly connected to the first movable rod.

[0010] Preferably, a connecting mechanism is provided on the surface of the flame arrester housing, and the connecting mechanism includes a fixing rod, which is fixedly connected to the surface of the flame arrester housing, a connecting ring is fixedly connected to the surface of the fixing rod, a second movable groove is provided on the inner side of the connecting ring, a second spring is fixedly connected to the inner wall of the second movable groove, a second movable rod is fixedly connected to the surface of the second spring, and a stop block is fixedly connected to the surface of the second movable rod.

[0011] Preferably, one end of the second spring away from the second movable groove is fixedly connected to the second movable rod, the stop block is fixedly connected to one end of the second movable rod away from the second spring, and the second movable rod moves inside the second movable groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Through the provision of the positioning block and the cooperation between the positioning rod and the positioning groove, the installation of the fire-blocking core can be positioned, which can avoid dislocation of the installation. The first movable rod is movable on the inner side of the first movable groove, and the elastic property of the first spring is combined with the elastic property of the first spring to enable the insertion rod to be inserted into and separated from the slot, thereby realizing the limitation and cancellation of the positioning rod, thereby facilitating the fixing and releasing of the fire-blocking core, and facilitating the removal of the fire-blocking core for maintenance or replacement, making the maintenance and replacement of the fire-blocking core more convenient, and eliminating the need for repeated disassembly and assembly of the flame arrester housing, thereby ensuring the fire-blocking effect and quality of the fire-blocking core.

[0014] 2. By setting the second spring, the second movable rod can move inside the second movable groove and can exert a certain force on the second movable rod, so that when the flange of the chemical pipeline and the connecting flange are docked, the abutment block can abut the flange of the chemical pipeline under the action of the second spring and the second movable rod, thereby limiting and preliminarily fixing the flange of the chemical pipeline, thereby facilitating better fixing of the flange and the connecting flange by bolts, etc., making the installation of the flame arrester housing and the chemical pipeline more convenient, and better ensuring the installation effect and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic front view of the structure of the utility model;

[0016] Figure 2 This is a schematic front cross-sectional view of the structure of the present utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 This is a schematic side cross-sectional view of the structure of the connecting block and the fixing block of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 6 It is a schematic side view of the structure of the second movable rod and the stop block of the present invention.

[0021] In the figure: 1. flame arrester housing; 11. flame arrester core; 12. connecting flange; 2. positioning block; 21. connecting block; 22. positioning rod; 23. fixing block; 24. positioning slot; 25. first movable slot; 26. first spring; 27. first movable rod; 28. pull rod; 29. ​​insertion rod; 210. slot; 211. first rubber pad; 212. second rubber pad; 3. fixing rod; 31. connecting ring; 32. second movable slot; 33. second spring; 34. second movable rod; 35. stop block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6 , an embodiment provided by the utility model:

[0024] A flame arrester for chemical production safety comprises a body, which includes a flame arrester housing 1, a flame arrester core 11 disposed on the inner side of the flame arrester housing 1, and a connecting flange 12 fixedly connected to the surface of the flame arrester housing 1. The flame arrester housing 1 generally has sufficient strength to withstand the impact pressure generated by an explosion. The flame arrester core 11 is the main component for preventing the spread of flames. The connection flange 12 facilitates the connection between the flame arrester housing 1 and a chemical pipeline, thereby preventing the spread of flames during chemical production and ensuring safe production.

[0025] A replacement mechanism is provided on the inner side of the flame arrester housing 1. The replacement mechanism includes a connecting block 21, which is fixedly connected to the surface of the flame arrester core 11. A positioning rod 22 is fixedly connected to the lower surface of the connecting block 21. A fixing block 23 is fixedly connected to the surface of the flame arrester housing 1. A positioning groove 24 is provided on the inner side of the fixing block 23. A first movable groove 25 is provided on the inner side of the fixing block 23. A first spring 26 is fixedly connected to the inner wall of the first movable groove 25. A first movable rod 27 is fixedly connected to the surface of the first spring 26. The first movable rod 27 is away from the first spring 26. The end is fixedly connected with a pull rod 28, and the surface of the pull rod 28 is fixedly connected with an insertion rod 29. A slot 210 is provided on the surface of the positioning rod 22. The first movable rod 27 is movable on the inner side of the first movable groove 25, and cooperates with the elastic properties of the first spring 26, so that the pull rod 28 can drive the insertion rod 29 to move, and then the insertion and separation of the insertion rod 29 and the slot 210 can be realized, making the installation and removal of the fire-blocking core 11 more convenient, thereby facilitating the maintenance and replacement of the fire-blocking core 11, so that the fire-blocking core 11 can better ensure the safety of chemical production.

[0026] Furthermore, the replacement mechanism also includes a positioning block 2, which is fixedly connected to the inner wall of the flame arrester housing 1, and the fire arrester core 11 moves on the inner side of the positioning block 2 and the flame arrester housing 1. The surface of the fire arrester core 11 is fixedly connected to a first rubber pad 211, and the lower surface of the connecting block 21 is fixedly connected to a second rubber pad 212. Through the arrangement of the first rubber pad 211 and the second rubber pad 212, the sealing between the fire arrester core 11 and the flame arrester housing 1 and the connecting block 21 and the flame arrester housing 1 can be achieved, thereby avoiding chemical leakage.

[0027] Furthermore, the positioning rods 22 are in two groups and fixedly connected to the connecting block 21, the fixing blocks 23 are in two groups and fixedly connected to the flame arrester housing 1, and the positioning rods 22 and the positioning grooves 24 are movably connected. Through the cooperation of the positioning rods 22 and the positioning grooves 24, the connecting block 21 can be positioned, and the installation of the fire arrester core 11 can be more stable and less prone to dislocation.

[0028] Furthermore, the first movable rod 27 moves on the inner side of the first movable groove 25, the insertion rod 29 moves on the inner side of the fixed block 23, and the end of the first spring 26 away from the first movable groove 25 is fixedly connected to the first movable rod 27. Through the movement of the insertion rod 29, it can be inserted into and separated from the slot 210, thereby realizing the limitation and cancellation of the positioning rod 22, thereby facilitating the removal or fixation of the fire-blocking core 11.

[0029] Furthermore, a connecting mechanism is provided on the surface of the flame arrester housing 1, and the connecting mechanism includes a fixing rod 3, which is fixedly connected to the surface of the flame arrester housing 1, and a connecting ring 31 is fixedly connected to the surface of the fixing rod 3. A second movable groove 32 is provided on the inner side of the connecting ring 31, and a second spring 33 is fixedly connected to the inner wall of the second movable groove 32. A second movable rod 34 is fixedly connected to the surface of the second spring 33, and a stop block 35 is fixedly connected to the surface of the second movable rod 34. By setting the stop block 35, the flange surface of the chemical pipeline can be abutted, and then the flange can be limited, which can avoid misalignment or skew between the flange of the chemical pipeline and the connecting flange 12 when the chemical pipeline and the flame arrester housing 1 are installed.

[0030] Furthermore, one end of the second spring 33 away from the second movable groove 32 is fixedly connected to the second movable rod 34, and the stop block 35 is fixedly connected to the one end of the second movable rod 34 away from the second spring 33. The second movable rod 34 moves on the inner side of the second movable groove 32. Through the setting of the second spring 33, a certain force can be applied to the second movable rod 34, so that when the flange of the chemical pipeline and the connecting flange 12 are docked, the stop block 35 can contact the flange surface of the chemical pipeline under the action of the second spring 33, which is convenient for the preliminary fixation of the chemical pipeline, thereby making it easier to connect and install the chemical pipeline and the flame arrester housing 1.

[0031] Working principle: When in use, pull the pull rod 28, the first movable rod 27 will move inside the first movable groove 25 under the action of the pull rod 28, at this time the first spring 26 is in a stretched state, the insertion rod 29 will move accordingly under the action of the pull rod 28 and separate from the slot 210, which can release the limit on the positioning rod 22, and then pull the connecting block 21 to separate the positioning rod 22 and the positioning groove 24, so that the fire-blocking core 11 can be pulled out, and the fire-blocking core 11 can be maintained or replaced. When reinstalling the core 11, the fire arrester core 11 is inserted into the flame arrester housing 1 and the positioning block 2, and the positioning rod 22 is inserted into the positioning groove 24. The pull rod 28 is released, and the first movable rod 27 is reset under the rebound action of the first spring 26, and then the insertion rod 29 is reset and inserted into the slot 210, so that the positioning rod 22 can be limited, thereby enabling the installation of the fire arrester core 11. At this time, the first rubber pad 211 and the second rubber pad 212 are tightly connected to the surface of the flame arrester housing 1 to achieve sealing;

[0032] When the flange of the chemical pipeline is docked with the connecting flange 12, the stop block 35 is squeezed by the flange, which causes the second movable rod 34 to move toward the inside of the second movable groove 32. At this time, the second spring 33 is deformed, and the elastic property of the second spring 33 can apply a certain force to the second movable rod 34, so that the stop block 35 can be pressed against the flange surface, thereby achieving the limitation and preliminary fixation of the flange, which is convenient for better installation of the chemical pipeline and the flame arrester housing 1 by bolts, etc.

[0033] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A flame arrester for chemical production safety, comprising a flame arrester body, the flame arrester body comprising a flame arrester housing (1), a flame arrester core (11) being provided on the inner side of the flame arrester housing (1), and a connecting flange (12) being fixedly connected to the surface of the flame arrester housing (1); It is characterized by: A replacement mechanism is provided on the inner side of the flame arrester housing (1), and the replacement mechanism includes a connecting block (21), the connecting block (21) is fixedly connected to the surface of the flame arrester core (11), the lower surface of the connecting block (21) is fixedly connected to a positioning rod (22), the surface of the flame arrester housing (1) is fixedly connected to a fixing block (23), the inner side of the fixing block (23) is provided with a positioning groove (24), the inner side of the fixing block (23) is provided with a first movable groove (25), the inner wall of the first movable groove (25) is fixedly connected to a first spring (26), the surface of the first spring (26) is fixedly connected to a first movable rod (27), the end of the first movable rod (27) away from the first spring (26) is fixedly connected to a pull rod (28), the surface of the pull rod (28) is fixedly connected to an insertion rod (29), and the surface of the positioning rod (22) is provided with a slot (210).

2. A flame arrester for chemical production safety according to claim 1, characterized in that: The replacement mechanism further comprises a positioning block (2), the positioning block (2) being fixedly connected to the inner wall of the flame arrester housing (1), the flame arrester core (11) being movable on the inner side of the positioning block (2) and the flame arrester housing (1), the surface of the flame arrester core (11) being fixedly connected to a first rubber pad (211), and the lower surface of the connecting block (21) being fixedly connected to a second rubber pad (212).

3. A flame arrester for chemical production safety according to claim 1, characterized in that: The positioning rods (22) are in two groups and fixedly connected to the connecting block (21); the fixing blocks (23) are in two groups and fixedly connected to the flame arrester housing (1); and the positioning rods (22) are movably connected to the positioning slots (24).

4. A flame arrester for chemical production safety according to claim 1, characterized in that: The first movable rod (27) moves inside the first movable groove (25), the insertion rod (29) moves inside the fixed block (23), and one end of the first spring (26) away from the first movable groove (25) is fixedly connected to the first movable rod (27).

5. The flame arrester for chemical production safety according to claim 1, characterized in that: The surface of the flame arrester housing (1) is provided with a connecting mechanism, the connecting mechanism comprising a fixing rod (3), the fixing rod (3) being fixedly connected to the surface of the flame arrester housing (1), the surface of the fixing rod (3) being fixedly connected to a connecting ring (31), the inner side of the connecting ring (31) being provided with a second movable groove (32), the inner wall of the second movable groove (32) being fixedly connected to a second spring (33), the surface of the second spring (33) being fixedly connected to a second movable rod (34), and the surface of the second movable rod (34) being fixedly connected to a stop block (35).

6. A flame arrester for chemical production safety according to claim 5, characterized in that: One end of the second spring (33) away from the second movable groove (32) is fixedly connected to the second movable rod (34), and the stop block (35) is fixedly connected to one end of the second movable rod (34) away from the second spring (33). The second movable rod (34) moves inside the second movable groove (32).

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