Household pipeline gas fire-retardant valve

Abstract

The utility model discloses a household pipeline gas fire-retardant valve which comprises a valve body, a shell is arranged in the middle of the valve body, a rectangular cavity is formed in the shell, a rectangular plate connected with the rectangular cavity in a drawing mode is arranged in the rectangular cavity, and an installation cavity is formed in the upper surface of the rectangular plate. A splitter plate is arranged in the middle of the mounting cavity, metal fiber meshes are arranged on the upper side and the lower side of the splitter plate, and a connecting plate is arranged at the position, located at an opening of the rectangular cavity, of the shell. After the mounting plate and the connecting plate are firmly mounted, the threaded barrel is rotated to enable the second lead screw to be clamped in the U-shaped opening, then the rotating ring is rotated to enable the second lead screw to rotate, the second lead screw moves into the threaded barrel, the clamping ring on the second lead screw can be clamped into the clamping groove at the moment, and therefore the mounting plate is further pressed and fixed. The phenomenon that the mounting plate is loosened can be effectively prevented, and the reliability of the structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas flame arresters, and particularly relates to a household pipeline gas flame arrester. Background Art

[0002] At present, for the pipeline transportation and storage tanks of flammable gases and flammable liquids in industrial production, generally a flame arrester is installed at one end of the pipeline to prevent "flashback" when a fire accident occurs, thus avoiding explosion and the occurrence of a larger fire. Since pipeline gas (including liquefied petroleum gas) has entered households, its safety in use has always been a concern for people.

[0003] At present, the existing pipeline gas flame arresters have a complex structure and are not convenient for disassembling and installing the metal fiber mesh, so it cannot be cleaned or replaced. After long-term use, its resistance performance deteriorates. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a household pipeline gas flame arrester to solve the technical problems raised in the background art.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows: A household pipeline gas flame arrester includes a valve body. A housing is arranged in the middle of the valve body. A rectangular cavity is arranged inside the housing. A rectangular plate is arranged in the rectangular cavity in a pull-out connection manner. An installation cavity is arranged on the upper surface of the rectangular plate. A flow dividing plate is arranged in the middle of the installation cavity. Metal fiber meshes are arranged on both the upper and lower sides of the flow dividing plate. A connecting plate is arranged at the opening of the rectangular cavity of the housing. An installation plate corresponding to the connecting plate is arranged at the end of the rectangular plate. Four first lead screws distributed in a rectangle are arranged on the installation plate. Fixed blocks corresponding to the first lead screws one by one are arranged on both the upper and lower sides of the housing. The end of the first lead screw penetrates through the connecting plate and the fixed block and is threadedly connected with a nut. And clamping structures for locking and fixing the installation plate are arranged on both sides of the housing.

[0006] Preferably, two trapezoidal plates are arranged on both inner walls of the rectangular cavity. Trapezoidal grooves corresponding to the trapezoidal plates one by one are arranged on both side walls of the rectangular plate. The size of the trapezoidal plate matches the size of the trapezoidal groove.

[0007] Preferably, two rectangular sealing grooves are arranged on the outer surface of the housing at the periphery of the opening of the rectangular cavity. Two sealing edges corresponding to the sealing grooves are arranged on the side wall of the installation plate at the periphery of the rectangular plate.

[0008] Preferably, an opening communicating with the installation cavity is arranged at the bottom of the rectangular plate. The diameter of the opening is smaller than the diameter of the installation cavity.

[0009] Preferably, a plurality of through holes are uniformly and orderly distributed on the surface of the flow dividing plate.

[0010] Preferably, four jacks corresponding to the first lead screws one by one are arranged on the surface of the connecting plate, through holes corresponding to the jacks are arranged on the surface of the fixing block, and the diameters of the through holes and the jacks match the diameter of the first lead screw.

[0011] Preferably, the clamping structure includes a threaded cylinder and a second lead screw threadedly connected to the threaded cylinder. A U-shaped seat is arranged on the side wall of the housing. The end of the threaded cylinder is rotatably connected to the U-shaped seat through a rotating shaft. A clamping ring is sleeved on the second lead screw, and a rotating ring is arranged at the end of the second lead screw. U-shaped openings corresponding to the second lead screw are arranged at the middle parts of both ends of the connecting plate and the mounting plate, and a clamping groove with a diameter matching the outer diameter of the clamping ring is arranged on the surface of the mounting plate.

[0012] A household pipeline gas flame arrester of the present utility model has the following advantages:

[0013] 1. In the present utility model, after the mounting plate and the connecting plate are firmly installed, rotate the threaded cylinder to make the second lead screw clamp into the U-shaped opening, and then rotate the rotating ring to make the second lead screw rotate, so that the second lead screw moves into the threaded cylinder. At this time, the clamping ring on the second lead screw will be clamped into the clamping groove, thereby further pressing and fixing the mounting plate, which can effectively prevent the loosening of the mounting plate, improve the reliability of the structure, and through the setting of the clamping structure, the first lead screw, the fixing block and the jack, it is convenient to install and disassemble the rectangular plate, so as to facilitate the cleaning and replacement of the metal fiber mesh and the flow dividing plate inside the rectangular plate, and the resistance of the metal fiber mesh and the flow dividing plate can be ensured.

[0014] 2. In the present utility model, a lot of uniformly distributed small round holes are drilled on the flow dividing plate, which has the function of gas flow diversion and guiding, and has a supporting effect on the metal fiber mesh, and also has a certain fire resistance effect. The metal fiber porous material of the metal fiber mesh is the main fire resistance material. When the flame passes through the metal fiber mesh, it is quickly cooled and the flame is torn into countless small flame groups, and the free radicals collide with each other and are gradually destroyed, ultimately resulting in the quenching of the flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1Schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 Exploded view of the rectangular plate and the housing in the present utility model;

[0018] Figure 3 Schematic diagram of the clamping structure in the present utility model;

[0019] Figure 4 Schematic diagram of the rectangular plate in the present utility model.

[0020] Explanation of the markings in the figure: 1. Valve body; 2. Housing; 3. Connecting plate; 4. Mounting plate; 5. Fixed block; 6. First lead screw; 7. Through hole; 8. Rectangular cavity; 9. Trapezoidal plate; 10. Rectangular plate; 11. Metal fiber mesh; 12. Jack; 13. Sealing groove; 14. U-shaped opening; 15. U-shaped seat; 16. Threaded barrel; 17. Second lead screw; 18. Snap ring; 19. Trapezoidal groove; 20. Card slot; 21. Installation cavity; 22. Flow dividing plate. Specific embodiments

[0021] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature and not restrictive.

[0022] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present utility model.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "coupling", "fixing", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model. To simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a household pipeline gas flame arrester of the present utility model with reference to the accompanying drawings.

[0027] As Figures 1-4As shown in the figure, a household pipeline gas flame arrester of the utility model includes a valve body 1. A housing 2 is arranged in the middle part of the valve body 1. A rectangular cavity 8 is arranged inside the housing 2. A rectangular plate 10 is arranged inside the rectangular cavity 8 in a pull-out connection manner. Two trapezoidal plates 9 are arranged on both inner walls of the rectangular cavity 8. Trapezoidal grooves 19 corresponding to the trapezoidal plates 9 one by one are arranged on both side walls of the rectangular plate 10. The size of the trapezoidal plate 9 matches the size of the trapezoidal groove 19. Through the cooperation between the trapezoidal plate 9 and the trapezoidal groove 19, a limiting effect is exerted on the rectangular plate 10, making the rectangular plate 10 more stably installed inside the rectangular cavity 8. An installation cavity 21 is arranged on the upper surface of the rectangular plate 10. A flow dividing plate 22 is arranged in the middle part of the installation cavity 21. Metal fiber meshes 11 are arranged on both the upper and lower sides of the flow dividing plate 22. A bottom of the rectangular plate 10 is provided with an opening communicating with the installation cavity 21. The diameter of the opening is smaller than the diameter of the installation cavity 21, which plays a supporting role for the metal fiber meshes 11. A plurality of uniformly and orderly distributed through holes are arranged on the surface of the flow dividing plate 22. A lot of uniformly distributed small round holes are drilled on the flow dividing plate 22, which has a gas flow dividing and guiding effect, and has a supporting effect on the metal fiber meshes 11, and also has a certain flame arrester effect. The metal fiber porous material of the metal fiber meshes 11 is the main flame arrester material. When the flame passes through the metal fiber meshes 11, it is quickly cooled and the temperature drops. The flame is torn into countless small flame clusters, and free radicals collide with each other and are gradually destroyed, ultimately resulting in the quenching of the flame. Due to the excellent heat conduction performance and special porous structure of the metal fiber material, backfire can be effectively prevented. To reduce the resistance of the metal fiber meshes 11, it needs to be cleaned regularly.

[0028] A connecting plate 3 is arranged at the opening of the rectangular cavity 8 of the housing 2. An installation plate 4 corresponding to the connecting plate 3 is arranged at the end of the rectangular plate 10. Two rectangular sealing grooves 13 are arranged on the surface of the housing 2 at the periphery of the opening of the rectangular cavity 8. Two sealing edges corresponding to the sealing grooves 13 are arranged on the side wall of the installation plate 4 at the periphery of the rectangular plate 10. Through the cooperation between the two sealing grooves 13 and the sealing edges distributed inside and outside, when the installation plate 4 is butted with the connecting plate 3, a good sealing effect is achieved. Four first lead screws 6 distributed in a rectangle are arranged on the installation plate 4. Fixed blocks 5 corresponding to the first lead screws 6 one by one are arranged on both the upper and lower sides of the housing 2. The end of the first lead screw 6 penetrates through the connecting plate 3 and the fixed block 5 and is threadedly connected with a nut. Four jacks 12 corresponding to the first lead screws 6 one by one are arranged on the surface of the connecting plate 3. Through holes 7 corresponding to the jacks 12 are arranged on the surface of the fixed block 5. The diameters of the through holes 7 and the jacks 12 match the diameter of the first lead screw 6. When the rectangular plate 10 is inserted into the rectangular cavity 8, the first lead screw 6 will be inserted into the through hole 7 of the fixed block 5 through the jack 12, and then a nut is tightened at the end of the first lead screw 6. During the process of tightening the nut, the first lead screw 6 will drive the installation plate 4 to be close to the connecting plate 3, so that the connection between the installation plate 4 and the connecting plate 3 is more firm and reliable.

[0029] Clamping structures for locking and fixing the mounting plate 4 are provided on both sides of the housing 2. The clamping structure includes a threaded cylinder 16 and a second lead screw 17 threadedly connected to the threaded cylinder 16. A U-shaped seat 15 is provided on the side wall of the housing 2. The end of the threaded cylinder 16 is rotatably connected to the U-shaped seat 15 through a rotating shaft. A clamping ring 18 is sleeved on the second lead screw 17, and a rotating ring is provided at the end of the second lead screw 17. U-shaped openings 14 corresponding to the second lead screw 17 are provided at the middle parts of both ends of the connecting plate 3 and the mounting plate 4, and a card slot 20 with a diameter matching the outer diameter of the clamping ring 18 is provided on the surface of the mounting plate 4. After the mounting plate 4 and the connecting plate 3 are firmly installed, rotate the threaded cylinder 16 to make the second lead screw 17 clamp into the U-shaped opening 14, and then rotate the rotating ring to make the second lead screw 17 rotate, so that the second lead screw 17 moves into the threaded cylinder 16. At this time, the clamping ring 18 on the second lead screw 17 will be clamped into the card slot 20, thereby further pressing and fixing the mounting plate 4, effectively preventing the loosening of the mounting plate 4, improving the reliability of the structure. And through the setting of the clamping structure, the first lead screw 6, the fixing block 5 and the jack 12, the present utility model facilitates the installation and disassembly of the rectangular plate 10, so as to facilitate the cleaning and replacement of the metal fiber mesh 11 and the flow dividing plate 22 in the rectangular plate 10, and can ensure the resistance of the metal fiber mesh 11 and the flow dividing plate 22.

[0030] It can be understood that the present utility model is described by some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A household pipeline gas fire arrester, characterized by: The invention comprises a valve body (1), wherein a shell (2) is arranged in the middle of the valve body (1), a rectangular cavity (8) is arranged inside the shell (2), a rectangular plate (10) connected to the rectangular cavity (8) is arranged in the rectangular cavity (8), a mounting cavity (21) is arranged on the upper surface of the rectangular plate (10), a flow divider (22) is arranged in the middle of the mounting cavity (21), a metal fiber mesh (11) is arranged on the upper and lower sides of the flow divider (22), and a connection is arranged at the opening of the rectangular cavity (8) of the shell (2). The rectangular plate (10) comprises a mounting plate (4) arranged at the end thereof and corresponding to the connecting plate (3); the mounting plate (4) is provided with four first screw rods (6) arranged in a rectangular shape; the upper and lower sides of the housing (2) are provided with fixing blocks (5) arranged one-to-one corresponding to the first screw rods (6); the ends of the first screw rods (6) penetrate the connecting plate (3) and the fixing blocks (5) and are threadedly connected with nuts; and the two sides of the housing (2) are provided with clamping structures for locking and fixing the mounting plate (4).

2. A household pipeline gas fire arrester according to claim 1, characterized in that: Two trapezoidal plates (9) are provided on both inner walls of the rectangular cavity (8), and trapezoidal grooves (19) distributed one-to-one with the trapezoidal plates (9) are provided on both inner walls of the rectangular cavity (8), and the size of the trapezoidal plates (9) matches the size of the trapezoidal grooves (19).

3. A household pipeline gas fire arrester according to claim 1, characterized in that: The shell (2) is provided with two rectangular sealing grooves (13) on its surface at the periphery of the opening of the rectangular cavity (8), and the side wall of the mounting plate (4) is provided with two sealing edges distributed corresponding to the sealing grooves (13) at the periphery of the rectangular plate (10).

4. A household pipeline gas fire arrester according to claim 1, characterized in that: An opening communicating with the installation cavity (21) is provided at the bottom of the rectangular plate (10), and the diameter of the opening is smaller than the diameter of the installation cavity (21).

5. A household pipeline gas fire arrester according to claim 1, characterized in that: The surface of the diverter plate (22) is provided with a plurality of through holes that are evenly and orderly distributed.

6. A household pipeline gas fire arrester according to claim 1, characterized in that: The surface of the connecting plate (3) is provided with four insertion holes (12) distributed in a one-to-one correspondence with the first screw rods (6), and the surface of the fixing block (5) is provided with through holes (7) distributed in a corresponding correspondence with the insertion holes (12), and the diameters of the through holes (7) and the insertion holes (12) match the diameter of the first screw rod (6).

7. A household pipeline gas fire arrester according to claim 1, characterized in that: The clamping structure comprises a threaded barrel (16) and a second screw rod (17) threadedly connected to the threaded barrel (16); a U-shaped seat (15) is provided on the side wall of the housing (2); the end of the threaded barrel (16) is rotatably connected to the U-shaped seat (15) via a rotating shaft; a clamping ring (18) is sleeved on the second screw rod (17), and a rotating ring is provided at the end of the second screw rod (17); U-shaped openings (14) corresponding to the second screw rod (17) are provided at the middle parts of both ends of the connecting plate (3) and the mounting plate (4); and a clamping groove (20) having a diameter matching the outer diameter of the clamping ring (18) is provided on the surface of the mounting plate (4).

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