Explosion-proof switch capable of automatically cutting off power supply

Abstract

The utility model relates to the technical field of electrical equipment, and discloses an explosion-proof switch capable of automatically cutting off a power supply, which comprises a base, an explosion-proof box and an explosion-proof switch shell, the two sides of the lower surface of the explosion-proof box are fixedly connected with connecting blocks, the middle part of the outer wall of one side, far away from the center of the explosion-proof box, of each connecting block is provided with a first limiting groove; second limiting grooves are formed in the middles of the outer walls of the two sides of the base correspondingly, rotating blocks are hinged to the interiors of the second limiting grooves correspondingly, connecting rods are fixedly connected to the upper ends of the rotating blocks correspondingly, a mounting block is fixedly connected to the upper portion of the inner wall of the rear end of the anti-explosion box, and a servo motor is fixedly connected to the outer wall of the front end of the mounting block. And rubber protective rings are fixedly connected to the middle parts of the outer walls of the two sides of the explosion-proof box. According to the utility model, through the clamping cooperation of the limiting block and the clamping block, the explosion-proof switch housing is convenient to install and disassemble, and through the cooperation of the connecting rod and the nut, the explosion-proof box is convenient to install and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an explosion-proof switch for automatically cutting off power supply. Background Art

[0002] With the continuous development of social economy and the continuous advancement of modern science and technology, electrical technology has also made great progress. The explosion-proof switch that automatically cuts off the power supply is a switch specially used in explosive environments. The explosion-proof switch that automatically cuts off the power supply can automatically cut off the power supply and effectively prevent secondary explosions caused by electrical sparks, greatly improving the safety of equipment and personnel in explosive environments.

[0003] However, most of the existing explosion-proof switches with automatic power cut-off on the market are not easy to install and disassemble, and most of the explosion-proof switches with automatic power cut-off have poor heat dissipation, which may affect the normal use of the explosion-proof switches with automatic power cut-off, and the dust-proof effect is not good, which may cause dust to contact the explosion-proof switch with automatic power cut-off, thereby affecting the service life of the explosion-proof switch with automatic power cut-off.

[0004] Therefore, those skilled in the art provide an explosion-proof switch that automatically cuts off power to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an explosion-proof switch that automatically cuts off the power supply. Through the coordinated use of a first dust-proof ventilation mesh plate and a second dust-proof ventilation mesh plate, dust is prevented from entering the interior of the explosion-proof box and contacting the components inside the explosion-proof box. The fan is driven to rotate by a servo motor, thereby air-cooling the explosion-proof switch that automatically cuts off the power supply, thereby improving the service life of the explosion-proof switch that automatically cuts off the power supply to a certain extent.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An explosion-proof switch for automatically cutting off power, comprising a base, an explosion-proof box and an explosion-proof switch housing, both sides of the lower surface of the explosion-proof box are fixedly connected with connecting blocks, the middle of the outer wall of one side of the connecting block away from the center of the explosion-proof box is provided with a first limiting groove, the middle of the outer walls of both sides of the base are provided with a second limiting groove, the inside of the second limiting groove is hingedly connected with a rotating block, and the upper end of the rotating block is fixedly connected with a connecting rod;

[0008] The upper part of the rear inner wall of the explosion-proof box is fixedly connected with a mounting block, the outer wall at the front end of the mounting block is fixedly connected with a servo motor, the middle parts of the outer walls on both sides of the explosion-proof box are fixedly connected with rubber protective coils, the lower parts of the inner walls on both sides of the explosion-proof box are fixedly connected with limit blocks, and the middle parts of the outer walls on both sides of the explosion-proof switch housing are connected with wiring tubes;

[0009] Through the above technical solution, the explosion-proof switch housing is easily installed and disassembled through the clamping cooperation between the limit block and the clamping block, and the explosion-proof box is easily installed and disassembled through the cooperation between the connecting rod and the nut.

[0010] Furthermore, the upper ends of the connecting rods are fixedly connected with fixing blocks, and the upper parts of the outer walls of the connecting rods are threadedly connected with nuts;

[0011] Through the above technical solution, it is convenient to install the explosion-proof box on the base through the cooperation of the connecting rod and the nut.

[0012] Furthermore, a door panel is hingedly connected to the middle of the front outer wall of the explosion-proof box, and a handle is fixedly connected to one side of the front outer wall of the door panel;

[0013] Through the above technical solution, it is convenient for the staff to open the door panel through the handle and then install, inspect and repair the components inside the explosion-proof box.

[0014] Furthermore, a first dustproof ventilation mesh plate is fixedly connected to the middle of the top surface of the explosion-proof box, and a second dustproof ventilation mesh plate is fixedly connected to the middle of the bottom surface of the explosion-proof box;

[0015] Through the above technical solution, sufficient air is provided to the inside of the explosion-proof box, thereby facilitating the normal operation of the servo motor and preventing external dust from entering the inside of the explosion-proof box.

[0016] Furthermore, the output shaft of the servo motor is fixedly connected to a rotating rod, and the lower end of the rotating rod is fixedly connected to a fan;

[0017] Through the above technical solution, it is convenient to drive the fan to rotate through the servo motor, thereby performing air cooling on the explosion-proof switch that automatically cuts off the power supply.

[0018] Furthermore, the upper and lower ends of the explosion-proof switch housing are fixedly connected with mounting plates, and the mounting plates are fixedly connected to the explosion-proof box by two bolts;

[0019] The above technical solution makes it easy for workers to install and disassemble the explosion-proof switch housing.

[0020] Furthermore, the lower ends of the outer walls on both sides of the explosion-proof switch housing are fixedly connected with clamping blocks, and the clamping blocks are engaged with the limit blocks;

[0021] The above technical solution makes it easy to lift and fix the position of the explosion-proof switch housing, and makes it convenient for workers to install the explosion-proof switch housing.

[0022] Furthermore, a sealing cover is fixedly connected to the front outer wall of the explosion-proof switch housing by a plurality of bolts, and a switch button is arranged in the middle of the front outer wall of the sealing cover;

[0023] The technical solution makes it easy for the staff to improve the sealing performance of the explosion-proof switch that automatically cuts off the power supply through the sealing cover.

[0024] The utility model has the following beneficial effects:

[0025] 1. Compared with the explosion-proof switch that automatically cuts off the power supply, the explosion-proof switch proposed by the utility model is easy to install and disassemble the explosion-proof switch housing through the clamping cooperation between the limit block and the clamping block, and the installation and disassembly of the explosion-proof box is convenient through the cooperation between the connecting rod and the nut.

[0026] 2. Compared with the explosion-proof switch that automatically cuts off the power supply, the explosion-proof switch that automatically cuts off the power supply proposed by the utility model, through the coordinated use of the first dust-proof ventilation mesh plate and the second dust-proof ventilation mesh plate, is convenient to prevent dust from entering the interior of the explosion-proof box and contacting the components inside the explosion-proof box, and the fan is driven by the servo motor to rotate, thereby performing air cooling on the explosion-proof switch that automatically cuts off the power supply, thereby improving the service life of the explosion-proof switch that automatically cuts off the power supply to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric diagram of an explosion-proof switch for automatically cutting off power supply proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of an explosion-proof switch for automatically cutting off power supply proposed by the utility model;

[0029] Figure 3 This is a schematic structural diagram of an explosion-proof switch with a door panel opened that automatically cuts off power provided by the utility model;

[0030] Figure 4 This is a schematic diagram of the partial structure of an explosion-proof switch for automatically cutting off power provided by the utility model;

[0031] Figure 5 The utility model discloses a structural schematic diagram of a base, a rotating block, a connecting rod, a fixing block and a nut of an explosion-proof switch for automatically cutting off power supply.

[0032] Legend:

[0033] 1. Base; 2. Explosion-proof box; 3. Door panel; 4. Handle; 5. Connecting block; 6. First limiting slot; 7. Second limiting slot; 8. Rotating block; 9. Connecting rod; 10. Fixed block; 11. Nut; 12. First dustproof ventilation mesh plate; 13. Second dustproof ventilation mesh plate; 14. Limiting block; 15. Rubber protective coil; 16. Explosion-proof switch housing; 17. Sealing cover; 18. Switch button; 19. Wiring tube; 20. Block; 21. Mounting plate; 22. Mounting block; 23. Servo motor; 24. Rotating rod; 25. Fan. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1-5 The utility model provides an embodiment: an explosion-proof switch for automatically cutting off power, comprising a base 1, an explosion-proof box 2 and an explosion-proof switch housing 16, both sides of the lower surface of the explosion-proof box 2 are fixedly connected with connecting blocks 5, the middle of the outer wall of the connecting block 5 away from the center of the explosion-proof box 2 is provided with a first limiting groove 6, the middle of the outer walls of both sides of the base 1 is provided with a second limiting groove 7, the inside of the second limiting groove 7 is hingedly connected with a rotating block 8, and the upper end of the rotating block 8 is fixedly connected with a connecting rod 9;

[0036] A mounting block 22 is fixedly connected to the upper portion of the inner wall at the rear end of the explosion-proof box 2, a servo motor 23 is fixedly connected to the outer wall at the front end of the mounting block 22, a rubber protective coil 15 is fixedly connected to the middle of the outer walls on both sides of the explosion-proof box 2, a limit block 14 is fixedly connected to the lower portion of the inner walls on both sides of the explosion-proof box 2, and a wiring tube 19 is connected through the middle of the outer walls on both sides of the explosion-proof switch housing 16.

[0037] The first dustproof ventilation mesh plate 12 and the second dustproof ventilation mesh plate 13 are used in conjunction to prevent dust from entering the interior of the explosion-proof box 2 and contacting the components inside the explosion-proof box 2. The servo motor 23 drives the fan 25 to rotate, thereby air-cooling the explosion-proof switch that automatically cuts off the power supply, thereby improving the service life of the explosion-proof switch that automatically cuts off the power supply to a certain extent.

[0038] The upper ends of the connecting rods 9 are fixedly connected with fixed blocks 10, and the upper parts of the outer walls of the connecting rods 9 are threadedly connected with nuts 11, so that the explosion-proof box 2 can be installed on the base 1 through the cooperation between the connecting rods 9 and the nuts 11. The middle part of the front end outer wall of the explosion-proof box 2 is hingedly connected with a door panel 3, and one side of the front end outer wall of the door panel 3 is fixedly connected with a handle 4, so that the staff can open the door panel 3 through the handle 4 to install, inspect and repair the components inside the explosion-proof box 2. The middle part of the top surface of the explosion-proof box 2 is fixedly connected with a first dust-proof ventilation mesh plate 12, and the middle part of the bottom surface of the explosion-proof box 2 is fixedly connected with a second dust-proof ventilation mesh plate 13, so as to provide sufficient air for the inside of the explosion-proof box 2, so as to facilitate the normal operation of the servo motor 23 and prevent external dust from entering the inside of the explosion-proof box 2. The output shaft of the servo motor 23 is fixedly connected with a rotating rod 24, and the lower end of the rotating rod 24 is fixedly connected with A fan 25 is fixedly connected, so that the fan 25 can be driven to rotate by the servo motor 23, so as to cool the explosion-proof switch that automatically cuts off the power supply by air. The upper and lower ends of the explosion-proof switch housing 16 are fixedly connected with mounting plates 21, and the mounting plates 21 are fixedly connected to the explosion-proof box 2 by two bolts, so that the staff can install and disassemble the explosion-proof switch housing 16. The lower ends of the outer walls on both sides of the explosion-proof switch housing 16 are fixedly connected with clamping blocks 20, and the clamping blocks 20 are engaged with the limit blocks 14, so as to facilitate the lifting and fixing of the position of the explosion-proof switch housing 16, and facilitate the staff to install the explosion-proof switch housing 16. The front end outer wall of the explosion-proof switch housing 16 is fixedly connected with a sealing cover 17 by multiple bolts, and a switch button 18 is arranged in the middle of the front end outer wall of the sealing cover 17, so that the staff can improve the sealing of the explosion-proof switch that automatically cuts off the power supply through the sealing cover 17.

[0039] Working principle: When using the explosion-proof switch that automatically cuts off the power supply, first, the explosion-proof box 2 is installed on the base 1 through the cooperation of the connecting rod 9 and the nut 11. Secondly, the explosion-proof switch housing 16 is installed inside the explosion-proof box 2 through the clamping cooperation of the limit block 14 and the clamping block 20. Finally, the first dust-proof ventilation mesh plate 12 and the second dust-proof ventilation mesh plate 13 are used in cooperation to prevent dust from entering the interior of the explosion-proof box 2 and contacting the components inside the explosion-proof box 2. The fan 25 is driven to rotate by the servo motor 23, and then the explosion-proof switch that automatically cuts off the power supply is cooled by air, which improves the service life of the explosion-proof switch that automatically cuts off the power supply to a certain extent.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An explosion-proof switch for automatically cutting off power, comprising a base (1), an explosion-proof box (2) and an explosion-proof switch housing (16), characterized in that: Both sides of the lower surface of the explosion-proof box (2) are fixedly connected with connecting blocks (5), and the middle part of the outer wall of the connecting block (5) away from the center of the explosion-proof box (2) is provided with a first limiting groove (6), and the middle part of the outer walls of both sides of the base (1) is provided with a second limiting groove (7), and the inside of the second limiting groove (7) is hingedly connected with a rotating block (8), and the upper end of the rotating block (8) is fixedly connected with a connecting rod (9); The upper portion of the rear end inner wall of the explosion-proof box (2) is fixedly connected to a mounting block (22), the front end outer wall of the mounting block (22) is fixedly connected to a servo motor (23), the middle portions of the outer walls on both sides of the explosion-proof box (2) are fixedly connected to rubber protective coils (15), the lower portions of the inner walls on both sides of the explosion-proof box (2) are fixedly connected to limit blocks (14), and the middle portions of the outer walls on both sides of the explosion-proof switch housing (16) are connected through wiring tubes (19).

2. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: The upper ends of the connecting rods (9) are fixedly connected to fixing blocks (10), and the upper parts of the outer walls of the connecting rods (9) are threadedly connected to nuts (11).

3. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: A door panel (3) is hingedly connected to the middle of the front end outer wall of the explosion-proof box (2), and a handle (4) is fixedly connected to one side of the front end outer wall of the door panel (3).

4. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: A first dustproof ventilation mesh plate (12) is fixedly connected to the middle of the top surface inside the explosion-proof box (2), and a second dustproof ventilation mesh plate (13) is fixedly connected to the middle of the bottom surface inside the explosion-proof box (2).

5. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: The output shaft of the servo motor (23) is fixedly connected to a rotating rod (24), and the lower end of the rotating rod (24) is fixedly connected to a fan (25).

6. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: The upper end and the lower end of the explosion-proof switch housing (16) are both fixedly connected to a mounting plate (21), and the mounting plate (21) is fixedly connected to the explosion-proof box (2) via two bolts.

7. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: The lower ends of the outer walls on both sides of the explosion-proof switch housing (16) are fixedly connected with clamping blocks (20), and the clamping blocks (20) are clamped and matched with the limiting blocks (14).

8. The explosion-proof switch for automatically cutting off power supply according to claim 1, characterized in that: The front end outer wall of the explosion-proof switch housing (16) is fixedly connected to a sealing cover (17) via a plurality of bolts, and a switch button (18) is arranged in the middle of the front end outer wall of the sealing cover (17).

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