Explosion-proof closed structure of fire monitor

Abstract

The utility model discloses an explosion-proof sealing structure of a fire hazard monitor. The explosion-proof sealing structure is composed of a cylindrical housing, a transparent member, a rubber pad, a pressing plate, a cross recessed pan head screw H-type M3X8, a hexagon socket cap screw, a light spring washer, a flat washer, a hexagon nut, a grounding sign, an explosion-proof cable stuffing box, a welding cover, a nameplate, a sealing pad, a cross recessed pan head screw H-type M4X8, a mounting rack and a detector. In the prior art, smoke dust is easy to enter equipment, and the detection device is damaged due to explosion on site. The shell of the utility model is formed by welding stainless steel, has the advantages of high protection grade, explosion-proof function and good structural leakproofness, and can prevent smoke and flame from entering the detector, thereby prolonging the service life of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof and fire-proof early warning technology, in particular to an explosion-proof and sealed structure of a fire monitor. Background Art

[0002] Fire detectors are the most basic type of fire alarms, with functions such as detecting fires, gap fires, and alarms. During normal use or when a fire occurs, explosions may occur on site, causing damage to the fire alarm, and smoke or flames generated on site may enter the interior of the fire alarm, causing direct damage to the fire alarm and a short service life. Therefore, existing fire detectors have problems such as poor sealing during use, easy damage in the event of an explosion, and a short service life. Utility Model Content

[0003] The utility model aims to provide an explosion-proof and sealed structure of a fire monitor, which can solve the problems of poor sealing, easy damage after explosion and short service life in the prior art.

[0004] In order to solve the above problems, the utility model provides an explosion-proof and sealed structure of a fire monitor, comprising: a cylindrical shell, a transparent piece is nested at the center of one end of the cylindrical shell, a rubber pad is fitted on the inner side of the transparent piece close to the cylindrical shell, a pressing plate located on the inner side of the cylindrical shell presses the rubber pad tightly against the right side of the transparent piece, and the pressing plate is fixed to the inner surface of one end of the cylindrical shell by a cross-slot pan head screw H-type M3X8 spiral connection;

[0005] A welding cover is provided at the other end of the cylindrical shell, and an explosion-proof cable stuffing box is provided at the center opening of the welding cover. A nut hole is provided on the upper side of the center opening of the welding cover, and the hexagonal nut is fixedly connected to the inner and outer sides of the welding cover through the nut hole. A grounding mark is provided on the hexagonal nut. Hexagonal cylindrical head screws are provided at the upper and lower ends of the welding cover respectively, and light spring washers and flat washers are sequentially sleeved on the screw legs of the hexagonal cylindrical head screws. The welding cover is fixedly connected to the other end of the cylindrical shell through the hexagonal cylindrical head screws, and the light spring washers and flat washers are located between the cylindrical shell and the hexagonal cylindrical head screws. A nameplate is fixedly connected to the lower side of the center opening of the welding cover, and a sealing gasket is fixedly provided on the top of the hexagonal cylindrical head screw located on the lower side of the welding cover;

[0006] A mounting frame is provided inside the cylindrical shell, and a transparent part is provided below the inner wall near the other end of the cylindrical shell. The mounting frame is fixedly connected to the transparent part below the inner wall by a cross-slot pan head screw H-type M4X8, and a detector is provided on one side of the mounting frame near one end of the cylindrical shell.

[0007] In a preferred embodiment, both ends of the cylindrical shell are open.

[0008] In a preferred embodiment, the explosion-proof cable stuffing box is flat-mouthed and can accommodate bidirectional cables entering and exiting.

[0009] In a preferred embodiment, the search head side of the detector and the transparent member at one end of the cylindrical shell are located on the same horizontal line.

[0010] In the preferred embodiment, the opening diameter of the explosion-proof cable stuffing box is the same as the diameter of the bidirectional cable, which fits perfectly.

[0011] In a preferred embodiment, the left end of the hexagonal nut passes through the welding cover and is located in the cylindrical shell.

[0012] In a preferred embodiment, the light spring washer is cylindrical and has elastic potential energy.

[0013] The beneficial effects of the utility model are as follows: the shell material of the utility model is welded with stainless steel, has the characteristics of high temperature resistance and high hardness, is not easy to deform after explosion, has a high protection level, and the connection position is connected by rubber pads and welding to prevent smoke and flames from entering the detector, thereby increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0016] Legend: 1. Cylindrical shell; 2. Transparent part; 3. Rubber pad; 4. Pressure plate; 5. Cross recessed pan head screw H type M3X8; 6. Hexagon socket head screw; 7. Light spring washer; 8. Flat washer; 9. Hexagon nut; 10. Grounding mark; 11. Explosion-proof cable stuffing box; 12. Welding cover; 13. Nameplate; 14. Sealing pad; 15. Cross recessed pan head screw H type M4X8; 16. Mounting bracket; 17. Detector. DETAILED DESCRIPTION

[0017] Figure 1 , Figure 2The specific structure of the utility model is shown, comprising: a cylindrical shell 1, a transparent part 2 is nested at the center of one end of the cylindrical shell 1, a rubber pad 3 is fitted on the inner side of the transparent part 2 close to the cylindrical shell 1, a pressure plate 4 located on the inner side of the cylindrical shell 1 presses the rubber pad 3 tightly against the right side of the transparent part 2, and the pressure plate 4 is fixed to the inner surface of one end of the cylindrical shell 1 by a cross slot pan head screw H-type M3X8 spiral connection; a welding cover 12 is provided at the other end of the cylindrical shell 1, an explosion-proof cable stuffing box 11 is provided at the center opening of the welding cover 12, a nut hole is provided on the upper side of the center opening of the welding cover 12, a hexagonal nut 9 is fixedly connected to the inner and outer sides of the welding cover 12 through the nut hole, a grounding mark 10 is provided on the hexagonal nut 9, and hexagon socket head screws 6 are respectively provided at the upper and lower ends of the welding cover 12, and light spring washers 7 and flat washers are sequentially sleeved on the screw legs of the hexagon socket head screws 6. The welding cover 12 is fixedly connected to the other end of the cylindrical shell 1 by a hexagon socket head screw 6, and a light spring washer 7 and a flat washer 8 are located between the cylindrical shell 1 and the hexagon socket head screw 6. A nameplate 13 is fixedly connected to the lower side of the central opening of the welding cover 12, and a sealing gasket 14 is fixedly provided on the top of the hexagon socket head screw 6 located on the lower side of the welding cover 12; a mounting frame 16 is provided inside the cylindrical shell 1, and a transparent part 2 is provided below the inner wall near the other end of the cylindrical shell 1. The mounting frame 16 is fixedly connected to the transparent part 2 located below the inner wall by a cross-slot pan head screw H-type M4X8, and a detector 17 is provided on one side of the mounting frame 16 near one end of the cylindrical shell 1; the detector 17 is made of explosion-proof structure in accordance with the provisions of GB3836.1-2010 and GB3836.2-2010, and the explosion-proof mark is ExdIICT6Gb. The outer shell material of the detector 17 is welded and formed by stainless steel. The detector is used in an ambient temperature of -20℃~+40℃. The atmospheric pressure is 80kPa-110kPa. The environment where the detector is stored should not contain corrosive substances that damage metal and its insulation. The dustproof grade of the detector 17 is not less than IP65.

[0018] The materials used for the cylindrical shell 1 and the detector 17 of the utility model are all made of explosion-proof structures in accordance with the provisions of GB3836.1-2010 and GB3836.2-2010, and the explosion-proof mark is ExdIICT6Gb, and the detector 17 has a dustproof grade of not less than IP65. The cylindrical shell 1 of the utility model is provided with a rubber pad 3, a pressure plate 4 and a welding connection welding cover 12, so that the inside of the cylindrical shell 1 is completely isolated from the outside, and has good sealing performance. When encountering a large fire on site, it plays a good role in preventing smoke, dust and fire, thereby extending the service life of the equipment.

[0019] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An explosion-proof and sealed structure of a fire monitor, characterized in that: include: A cylindrical shell (1), a transparent member (2) is nested at the center of one end of the cylindrical shell (1), a rubber pad (3) is fitted on the inner side of the transparent member (2) close to the cylindrical shell (1), a pressing plate (4) located on the inner side of the cylindrical shell (1) presses the rubber pad (3) tightly against the right side of the transparent member (2), and the pressing plate (4) is screw-connected and fixed to the inner surface of one end of the cylindrical shell (1) by a cross-recessed pan head screw H-type M3X8 (5); The other end of the cylindrical shell (1) is welded with a cover (12), and an explosion-proof cable stuffing box (11) is provided at the central opening of the welding cover (12). A nut hole is provided on the upper side of the central opening of the welding cover (12), and a hexagonal nut (9) is fixedly connected to the inner and outer sides of the welding cover (12) through the nut hole. The hexagonal nut (9) is provided with a grounding mark (10). The upper and lower ends of the welding cover (12) are respectively provided with a hexagon socket head screw (6), and the screw legs of the hexagon socket head screw (6) are sequentially sleeved with connecting screws from left to right. The welding cover (12) is connected to a light spring washer (7) and a flat washer (8); the welding cover (12) is fixedly connected to the other end of the cylindrical shell (1) through the hexagon socket head screw (6); the light spring washer (7) and the flat washer (8) are located between the cylindrical shell (1) and the hexagon socket head screw (6); a nameplate (13) is fixedly connected to the lower side of the central opening of the welding cover (12); and a sealing gasket (14) is fixedly provided on the top of the hexagon socket head screw (6) located on the lower side of the welding cover (12); A mounting frame (16) is provided inside the cylindrical shell (1), and the transparent member (2) is fixedly provided below the inner wall near the other end of the cylindrical shell (1); the mounting frame (16) is fixedly connected to the transparent member (2) located below the inner wall by means of cross-recessed pan head screws H-type M4X8 (15); and a detector (17) is provided on one side of the mounting frame (16) near one end of the cylindrical shell (1).

2. The explosion-proof and sealed structure of the fire monitor according to claim 1, characterized in that: Both ends of the cylindrical shell (1) are open.

3. The explosion-proof and sealed structure of the fire monitor according to claim 1, characterized in that: The explosion-proof cable stuffing box (11) is in a flat opening shape and can accommodate bidirectional cables to enter and exit.

4. The explosion-proof and sealed structure of the fire monitor according to claim 1, characterized in that: The search head side of the detector (17) is located on the same horizontal line as the transparent part (2) at one end of the cylindrical shell (1).

5. The explosion-proof and sealed structure of the fire monitor according to claim 3, characterized in that: The opening diameter of the explosion-proof cable stuffing box (11) is the same as the diameter of the bidirectional cable, and is completely fitted and nested.

6. The explosion-proof and sealed structure of a fire monitor according to claim 1, characterized in that: The left end of the hexagonal nut (9) passes through the welding cover (12) and is located in the cylindrical shell (1).

7. The explosion-proof and sealed structure of a fire monitor according to claim 1, characterized in that: The light spring washer (7) is cylindrical and has elastic potential energy.

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