Electrical explosion-proof housing

Abstract

The utility model discloses an electrical explosion-proof housing, which comprises an explosion-proof seat and a connecting mechanism, an explosion-proof cover is arranged at the upper end of the explosion-proof seat, an air outlet cylinder is fixedly connected to the upper end of the explosion-proof cover, and an adjustable spark extinguishing mechanism is arranged in the air outlet cylinder; the connecting mechanism comprises connecting grooves, locking grooves and locking blocks, the connecting grooves are formed in the left end and the right end of the explosion-proof base respectively, the locking grooves are formed in the left end and the right end of the explosion-proof base respectively, the locking blocks are slidably connected between the connecting grooves and the transversely adjacent locking grooves, and the connecting mechanism further comprises a fixing shaft, an adjusting handle and a driving handle; according to the electrical explosion-proof shell, rapid and stable connection between the explosion-proof cover and the explosion-proof base can be achieved, rapid replacement of spark extinguishing equipment can be achieved, and the explosion-proof effect of the electrical explosion-proof shell is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical protection equipment, in particular to an electrical explosion-proof enclosure. Background Technique

[0002] An electrical explosion-proof enclosure refers to an explosion-proof enclosure that can withstand the explosion pressure that may be generated inside the equipment and prevent the explosion flame from spreading to the surrounding environment. When an explosion occurs inside the equipment due to reasons such as electric sparks and high temperatures, the explosion-proof enclosure can ensure that the explosion energy is limited within the enclosure and will not trigger an explosion or fire in the external environment. Some existing electrical explosion-proof enclosures use bolts and nuts to connect the explosion-proof cover and the explosion-proof seat. For some electrical explosion-proof enclosures, screws are used to fixedly connect a metal microporous plate to the air outlet of the electrical explosion-proof enclosure. Such electrical explosion-proof enclosures have some problems. For example, when using bolts and nuts to connect the explosion-proof cover and the explosion-proof seat, the installation process is relatively cumbersome. When screws are used to fixedly connect the metal microporous plate to the air outlet of the electrical explosion-proof enclosure, it is not convenient to replace the metal microporous plate, which affects the continuous explosion-proof efficiency of the electrical explosion-proof enclosure. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an electrical explosion-proof enclosure that can achieve the rapid and stable connection of the explosion-proof cover and the explosion-proof seat, and at the same time can achieve the rapid replacement of the fire extinguishing spark device, greatly improving the explosion-proof effect of the electrical explosion-proof enclosure, and can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an electrical explosion-proof enclosure, including an explosion-proof seat and a connection mechanism;

[0005] Explosion-proof seat: An explosion-proof cover is arranged at the upper end thereof, an air outlet cylinder is fixedly connected to the upper end of the explosion-proof cover, and an adjustable fire extinguishing spark mechanism is arranged inside the air outlet cylinder;

[0006] Connection mechanism: It includes a connection groove, a locking groove and a locking block. The connection grooves are respectively arranged at the left and right ends of the explosion-proof seat. Locking grooves are arranged at both the left and right ends of the explosion-proof seat. Locking blocks are slidably connected between the connection grooves and the laterally adjacent locking grooves, which can achieve the rapid and stable connection of the explosion-proof cover and the explosion-proof seat, and at the same time can achieve the rapid replacement of the fire extinguishing spark device, greatly improving the explosion-proof effect of the electrical explosion-proof enclosure.

[0007] Further, the connection mechanism further includes a fixed shaft, an adjustment handle, and a driving handle. The fixed shaft is fixedly connected to the inside of the connection groove respectively. The adjustment handles are all rotatably connected to the middle of the fixed shaft. One end of two longitudinally adjacent adjustment handles close to the center of the connection groove is cooperatively installed with the same locking block. The driving handles are all slidably connected to the inside of the connection groove. One end of two longitudinally adjacent adjustment handles away from the center of the connection groove is cooperatively installed with the same driving handle, providing driving force for the opening and closing of the connection mechanism.

[0008] Further, the connection mechanism further includes a first spring and a second spring. The second springs are symmetrically and fixedly connected between the driving handle and the laterally adjacent locking block respectively. The first springs are symmetrically and fixedly connected between the driving handle and the connection groove respectively, ensuring the stability of the closed connection mechanism.

[0009] Further, the upper end of the air outlet cylinder is threadedly connected with a closed cover. The upper end of the closed cover is fixedly connected with a handle. The lower end of the closed cover is fixedly connected with symmetrically distributed telescopic columns. The telescopic ends of the telescopic columns are fixedly connected to the upper end of the sliding seat. Symmetrically distributed third springs are fixedly connected between the sliding seat and the closed cover. The third springs are all movably sleeved on the outer surface of the laterally adjacent telescopic columns. The outer surface of the sliding seat is slidably connected to the inside of the air outlet cylinder. The middle part of the air outlet cylinder is provided with uniformly distributed air outlet ports, providing a channel for the pressure relief of the electrical explosion-proof enclosure.

[0010] Further, the fire spark extinguishing mechanism includes a connecting column, an external thread, a mounting disc, a metal microporous plate, and a fixed disc. The connecting column is fixedly connected to the lower end of the sliding seat. The middle part of the connecting column is fixedly connected with a fixed disc. Uniformly distributed metal microporous plates are movably sleeved on the lower end of the outer surface of the connecting column. An external thread is provided at the lower end of the outer surface of the connecting column. The mounting disc is threadedly connected to the middle of the external thread, facilitating the replacement of the metal microporous plate.

[0011] Further, a mounting frame is fixedly connected to the middle part of the outer surface of the air outlet cylinder. A filter screen is slidably connected to the inside of the mounting frame, realizing the filtration of the gas entering and leaving the electrical explosion-proof shell.

[0012] Further, uniformly distributed heat dissipation plates are arranged on the outer surface of the explosion-proof cover. Uniformly distributed legs are fixedly connected to the lower end of the explosion-proof base, facilitating the heat dissipation of electrical equipment.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This electrical explosion-proof enclosure has the following advantages:

[0014] 1. Through the connection mechanism, the driving handle and the locking block are linked by springs, realizing the rapid and stable connection of the explosion-proof cover and the explosion-proof base. At the same time, the stability and firmness of the connection between the isolation cover and the explosion-proof base are ensured, greatly facilitating the installation and disassembly of the electrical explosion-proof enclosure and greatly reducing the work complexity of the staff.

[0015] 2. Through the coordinated operation of the spark extinguishing mechanism and the piston mechanism, the sparks generated by electrical equipment under special circumstances are eliminated inside the electrical explosion-proof enclosure, effectively preventing the sparks from entering the working environment. At the same time, the threaded locking method of the spark extinguishing mechanism greatly facilitates the installation and replacement of the metal micro-hole plate, significantly improving the explosion-proof effect of the electrical explosion-proof enclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Structural schematic diagram of the present utility model;

[0017] Figure 2 Cross-sectional structural schematic diagram inside the present utility model;

[0018] Figure 3 Enlarged structural schematic diagram at position A of the present utility model;

[0019] Figure 4 Enlarged structural schematic diagram at position B of the present utility model.

[0020] In the figure: 1 explosion-proof base, 2 explosion-proof cover, 3 connecting mechanism, 31 connecting groove, 32 locking groove, 33 locking block, 34 fixed shaft, 35 adjusting handle, 36 driving handle, 37 first spring, 38 second spring, 4 spark extinguishing mechanism, 41 connecting column, 42 external thread, 43 mounting plate, 44 metal micro-hole plate, 45 fixed plate, 5 air outlet cylinder, 6 sliding seat, 7 telescopic column, 8 third spring, 9 closing cover, 10 handle, 11 mounting bracket, 12 filter screen, 13 heat dissipation plate, 14 leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 of 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.

[0022] Please refer to Figures 1-4 , this embodiment provides a technical solution: an electrical explosion-proof enclosure, including an explosion-proof base 1 and a connecting mechanism 3;

[0023] Explosion-proof base 1: An explosion-proof cover 2 is provided at its upper end. The upper end of the explosion-proof cover 2 is fixedly connected with an air outlet cylinder 5. An adjustable spark extinguishing mechanism 4 is arranged inside the air outlet cylinder 5. Heat dissipation plates 13 are evenly distributed on the outer surface of the explosion-proof cover 2. Uniformly distributed legs 14 are fixedly connected to the lower end of the explosion-proof base 1;

[0024] Connecting mechanism 3: It includes a connecting groove 31, a locking groove 32, and a locking block 33. The connecting grooves 31 are respectively arranged at the left and right ends of the flameproof seat 1. Locking grooves 32 are arranged at both the left and right ends of the flameproof seat 1. A locking block 33 is slidably connected between each connecting groove 31 and the laterally adjacent locking groove 32. The connecting mechanism 3 further includes a fixed shaft 34, an adjusting handle 35, and a driving handle 36. The fixed shafts 34 are respectively fixedly connected to the inside of the connecting grooves 31. The adjusting handles 35 are all rotatably connected to the middle of the fixed shafts 34. One end of two longitudinally adjacent adjusting handles 35 close to the center of the connecting groove 31 is cooperatively installed with the same locking block 33. The driving handles 36 are respectively slidably connected to the inside of the connecting grooves 31. One end of two longitudinally adjacent adjusting handles 35 away from the center of the connecting groove 31 is cooperatively installed with the same driving handle 36. The connecting mechanism 3 further includes a first spring 37 and a second spring 38. The second springs 38 are symmetrically and fixedly connected between the driving handles 36 and the laterally adjacent locking blocks 33. The first springs 37 are symmetrically and fixedly connected between the driving handles 36 and the connecting grooves 31. Press the two driving handles 36, and the driving handles 36 will move in the corresponding connecting grooves 31 towards the center of the flameproof seat 1. The front and rear ends of the driving handles 36 will push the corresponding adjusting handles 35 to rotate, so that one end of the adjusting handles 35 close to the center of the connecting groove 31 will push the corresponding locking blocks 33 away from the center of the flameproof seat 1. The locking blocks 33 will be retracted into the inside of the connecting grooves 31. At the same time, the first springs 37 and the second springs 38 will be compressed by force. Then insert the flameproof cover 2 into the upper end of the flameproof seat 1, and then stop applying the force to the driving handles 36. Under the elastic force of the first springs 37 and the second springs 38, the driving handles 36 will move away from the center of the flameproof seat 1. At the same time, the locking blocks 33 will slide into the space between the laterally adjacent connecting grooves 31 and locking grooves 32, so that the flameproof seat 1 and the flameproof cover 2 are stably connected;

[0025] Among them: The upper end of the air outlet cylinder 5 is threadedly connected with a sealing cover 9. The upper end of the sealing cover 9 is fixedly connected with a handle 10. The lower end of the sealing cover 9 is fixedly connected with symmetrically distributed telescopic columns 7. The telescopic ends of the telescopic columns 7 are fixedly connected to the upper ends of the sliding seats 6. Symmetrically distributed third springs 8 are fixedly connected between the sliding seats 6 and the sealing cover 9. The third springs 8 are all movably sleeved on the outer surfaces of the laterally adjacent telescopic columns 7. The outer surface of the sliding seat 6 is slidably connected to the inside of the air outlet cylinder 5. The middle part of the air outlet cylinder 5 is provided with evenly distributed air outlet openings. The middle part of the outer surface of the air outlet cylinder 5 is fixedly connected with a mounting bracket 11. A filter screen 12 is slidably connected to the inside of the mounting bracket 11. Sleeved the metal microporous plates 44 on the outer surfaces of the connecting columns 41, and then thread the mounting disc 43 onto the outer surface of the external thread 42 to lock the metal microporous plates 44. Then thread the sealing cover 9 onto the upper end of the air outlet cylinder 5 through the handle 10;

[0026] Among them: The fire extinguishing spark mechanism 4 includes a connecting column 41, an external thread 42, a mounting plate 43, a metal microporous plate 44 and a fixing plate 45. The connecting column 41 is fixedly connected to the lower end of the sliding seat 6. A fixing plate 45 is fixedly connected to the middle of the connecting column 41. Uniformly distributed metal microporous plates 44 are movably sleeved on the lower end of the outer surface of the connecting column 41. The external thread 42 is arranged on the lower end of the outer surface of the connecting column 41. A mounting plate 43 is threadedly connected to the middle of the external thread 42.

[0027] The working principle of an electrical explosion-proof enclosure provided by the present utility model is as follows: During operation, personnel first press the two driving handles 36. The driving handles 36 both move in the corresponding connecting grooves 31 towards the center of the explosion-proof base 1. The front and rear ends of the driving handles 36 both push the corresponding adjusting handles 35 to rotate, so that the ends of the adjusting handles 35 close to the center of the connecting grooves 31 both push the corresponding locking blocks 33 away from the center of the explosion-proof base 1. The locking blocks 33 are both retracted into the connecting grooves 31. At the same time, the first spring 37 and the second spring 38 are both compressed under force. Then, the personnel insert the explosion-proof cover 2 onto the upper end of the explosion-proof base 1. Then, the personnel stop applying force to the driving handles 36. Under the elastic force of the first spring 37 and the second spring 38, the driving handles 36 both move away from the center of the explosion-proof base 1. At the same time, the locking blocks 33 both slide into the space between the laterally adjacent connecting grooves 31 and locking grooves 32, so that the explosion-proof base 1 and the explosion-proof cover 2 are stably connected. Then, the personnel movably sleeve the metal microporous plates 44 onto the outer surface of the connecting column 41. Then, the mounting plate 43 is threadedly connected to the outer surface of the external thread 42 to lock the metal microporous plates 44. Then, the closing cover 9 is threadedly connected to the upper end of the air outlet cylinder 5 through the handle 10. When an accident occurs to the electrical equipment inside the electrical explosion-proof enclosure, the generated gas and sparks float upward. When the sparks pass through the metal microporous plates 44, the sparks are effectively extinguished. At the same time, the gas pushes the sliding seat 6 to slide upward inside the air outlet cylinder 5, and at the same time, the telescopic ends of the telescopic columns 7 are both retracted, and the third springs 8 are both elastically compressed. The sliding seat 6 stops blocking the air outlet, and the gas is discharged through the air outlet. When the pressure release is completed, under the elastic force of the third spring 8, the sliding seat 6 slides downward to re-block the air outlet.

[0028] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. An electrical flameproof enclosure, characterized in that: It comprises a flameproof seat (1) and a connecting mechanism (3); An explosion-proof seat (1) is provided with an explosion-proof cover (2) at its upper end, a gas outlet (5) is fixedly connected to the upper end of the explosion-proof cover (2), and an adjustable spark extinguishing mechanism (4) is provided inside the gas outlet (5); The connecting mechanism (3) comprises a connecting groove (31), a locking groove (32) and a locking block (33), wherein the connecting groove (31) is respectively arranged at the left and right ends of the flameproof seat (1), the left and right ends of the flameproof seat (1) are both provided with a locking groove (32), and the locking block (33) is slidably connected between the connecting groove (31) and the laterally adjacent locking groove (32).

2. The electrical flameproof enclosure according to claim 1, characterized in that: The connecting mechanism (3) further comprises a fixed shaft (34), an adjusting handle (35) and a driving handle (36); the fixed shaft (34) is respectively fixedly connected to the inside of the connecting groove (31); the adjusting handles (35) are rotatably connected to the middle of the fixed shaft (34); one end of two longitudinally adjacent adjusting handles (35) close to the center of the connecting groove (31) are both mounted in cooperation with the same locking block (33); the driving handle (36) is respectively slidably connected to the inside of the connecting groove (31); one end of two longitudinally adjacent adjusting handles (35) away from the center of the connecting groove (31) are both mounted in cooperation with the same driving handle (36).

3. An electrical flameproof enclosure according to claim 2, characterized in that: The connecting mechanism (3) further comprises a spring 1 (37) and a spring 2 (38), wherein the spring 2 (38) is symmetrically fixedly connected between the driving handle (36) and a laterally adjacent locking block (33), and the spring 1 (37) is symmetrically fixedly connected between the driving handle (36) and the connecting groove (31).

4. The electrical flameproof enclosure according to claim 1, characterized in that: The upper end of the air outlet (5) is threadedly connected to a closing cover (9), the upper end of the closing cover (9) is fixedly connected to a handle (10), the lower end of the closing cover (9) is fixedly connected to symmetrically distributed telescopic columns (7), the telescopic ends of the telescopic columns (7) are fixedly connected to the upper end of the sliding seat (6), symmetrically distributed springs (8) are fixedly connected between the sliding seat (6) and the closing cover (9), the springs (8) are movably sleeved on the outer surfaces of the telescopic columns (7) adjacent to each other in the transverse direction, the outer surface of the sliding seat (6) is slidably connected to the inside of the air outlet (5), and the middle of the air outlet (5) is provided with uniformly distributed air outlets.

5. The electrical flameproof enclosure according to claim 4, characterized in that: The spark extinguishing mechanism (4) comprises a connecting column (41), an external thread (42), a mounting plate (43), a metal microporous plate (44) and a fixed plate (45); the connecting column (41) is fixedly connected to the lower end of the sliding seat (6); the middle part of the connecting column (41) is fixedly connected to the fixed plate (45); the lower end of the outer surface of the connecting column (41) is movably sleeved with uniformly distributed metal microporous plates (44); the lower end of the outer surface of the connecting column (41) is provided with an external thread (42); the middle part of the external thread (42) is threadedly connected to the mounting plate (43).

6. The electrical flameproof enclosure according to claim 1, characterized in that: A mounting frame (11) is fixedly connected to the middle of the outer surface of the air outlet cylinder (5), and a filter screen (12) is slidably connected to the interior of the mounting frame (11).

7. The electrical flameproof enclosure according to claim 1, characterized in that: The outer surface of the flameproof cover (2) is provided with evenly distributed heat dissipation plates (13), and the lower end of the flameproof seat (1) is fixedly connected with evenly distributed supporting legs (14).

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