Automatic exhaust device for positive pressure explosion-proof cabinet
The automatic exhaust device addresses pressure imbalance in explosion-proof cabinets by using a piston and moving ring mechanism to expel hot air and manage dust, improving safety and durability.
Patent Information
- Application Number
- CN202421005478.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Existing explosion-proof cabinets lack a mechanism to balance internal and external air pressure differences, leading to deformation and reduced service life due to pressure buildup.
An automatic exhaust device with a piston and moving ring mechanism that utilizes thermal expansion to expel hot air, combined with cooling fans and filters to manage pressure and dust, controlled by a signal system.
Enhances explosion-proof and heat dissipation effects, extending the cabinet's service life by managing pressure and reducing dust accumulation.
Smart Images
Figure CN222282609U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of positive pressure explosion-proof cabinets, in particular to an automatic exhaust device for positive pressure explosion-proof cabinets. Background Art
[0002] An electrical cabinet is a component used for circuit control, and an explosion-proof cabinet is safer than an ordinary electrical cabinet.
[0003] Although the existing explosion-proof cabinets can achieve explosion-proof effects during use, they are not equipped with a mechanism to balance the pressure difference between the internal air pressure and the external air pressure after the internal air pressure rises. Therefore, the existing explosion-proof cabinets are prone to deformation, thereby reducing the explosion-proof effect of the existing explosion-proof cabinets and also reducing the service life of the existing explosion-proof cabinets. For this reason, we propose an automatic exhaust device for positive pressure explosion-proof cabinets. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an automatic exhaust device for a positive pressure explosion-proof cabinet, which has the advantages of strong practicability, good explosion-proof effect and high automation, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical scheme: an automatic exhaust device for a positive pressure explosion-proof cabinet, comprising a main body, the outer wall of the main body is rotatably connected with a sealing door, the outer wall of the main body is provided with a mounting hole, the inner wall of the mounting hole is fixedly equipped with a straight pipe, the inner wall of the straight pipe is provided with a mounting groove, the inner wall of the mounting groove is fixedly equipped with a cross bar, the outer wall of the cross bar is sleeved with a spring, the outer wall of the spring is abutted with a moving ring, the outer wall of the moving ring is fixedly equipped with a connecting rod, the end of the connecting rod is fixedly equipped with a piston, the outer walls of the straight pipe and the piston are respectively provided with a signal receiver and a signal transmitter, the bottom of the main body is provided with a cooling fan, the bottom of the main body is fixedly equipped with a filter, and the outer walls of the piston and the straight pipe are both provided with grooves.
[0006] As a preferred technical solution of the utility model: the number of the cooling fans is two, one of the cooling fans is a suction fan, and the other cooling fan is an exhaust fan, and the position of the filter corresponds to the position of the suction fan.
[0007] As a preferred technical solution of the utility model: the outer wall of the piston is slidably connected to the inner wall of the moving ring, and the moving ring is not communicated with the outside when the piston and the moving ring are sleeved.
[0008] As a preferred technical solution of the utility model: the outer wall of the movable ring is slidably connected to the inner wall of the mounting groove, and the straight pipe and the movable ring are both made of galvanized iron metal.
[0009] As a preferred technical solution of the utility model: the number of the connecting rods is four, and the four connecting rods are evenly distributed along the inner wall of the installation groove.
[0010] As a preferred technical solution of the utility model: a controller is fixedly mounted on the bottom of the body, and the controller is electrically connected to the cooling fan, the signal transmitter and the signal receiver respectively.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The automatic exhaust device for the positive pressure explosion-proof cabinet, through the provided main body, sealing door, mounting hole, straight pipe, mounting groove, spring, and piston structure, enables the exhaust device to utilize the increase in the internal temperature of the main body to cause the internal air to expand due to heat during use, thereby generating a repelling force on the piston and the moving ring, so that the moving ring drives the piston to move out of the straight pipe, and utilizes the air pressure difference to enable the hot air inside the main body to be discharged to the outside of the main body, thereby improving the explosion-proof effect of the explosion-proof cabinet.
[0013] 2. The positive pressure explosion-proof cabinet uses an automatic exhaust device. Through the signal transmitter, signal receiver, cooling fan and filter structure, when the piston moves, the signal transmitter will coincide with the position of the signal receiver, so that the controller can automatically control the two cooling fans to perform suction and exhaust operations respectively, thereby improving the heat dissipation effect of the explosion-proof cabinet, and cooperating with the filter to filter dust to ensure that the dust content in the inhaled air is reduced to a minimum, thereby improving the protection effect and heat dissipation effect of the explosion-proof cabinet. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;
[0016] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;
[0017] Figure 4 This is a schematic diagram of the internal structure of the straight pipe of the utility model.
[0018] In the figure: 1. main body; 2. sealing door; 3. mounting hole; 4. straight pipe; 5. mounting slot; 6. groove; 7. signal receiver; 8. spring; 9. piston; 10. connecting rod; 11. filter; 12. cooling fan; 13. cross bar; 14. signal transmitter; 15. moving ring. DETAILED DESCRIPTION
[0019] 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.
[0020] See also Figure 1-4 , an automatic exhaust device for a positive pressure explosion-proof cabinet, comprising a body 1, the outer wall of the body 1 is rotatably connected with a sealing door 2, the outer wall of the body 1 is provided with a mounting hole 3, the inner wall of the mounting hole 3 is fixedly equipped with a straight pipe 4, the inner wall of the straight pipe 4 is provided with a mounting groove 5, the inner wall of the mounting groove 5 is fixedly equipped with a cross bar 13, the outer wall of the cross bar 13 is sleeved with a spring 8, the outer wall of the spring 8 is abutted with a moving ring 15, the outer wall of the moving ring 15 is fixedly equipped with a connecting rod 10, the end of the connecting rod 10 is fixedly equipped with a piston 9, the outer walls of the straight pipe 4 and the piston 9 are respectively provided with a signal receiver 7 and a signal transmitter 14, a cooling fan 12 is provided at the bottom of the body 1, a filter screen 11 is fixedly equipped at the bottom of the body 1, and the outer walls of the piston 9 and the straight pipe 4 are both provided with grooves 6.
[0021] In the above structure, by setting the main body 1, sealing door 2, mounting hole 3, straight pipe 4, movable ring 15, piston 9, and connecting rod 10 structure, when the temperature inside the main body 1 is too high during use of the explosion-proof cabinet, the physical effect of the air expanding due to heat is used to cause the hot air to displace the piston 9 and the movable ring 15, so that the piston 9 can be moved to the outside of the straight pipe 4, so that the heat cannot be accumulated in a large area inside the main body 1, thereby achieving an explosion-proof effect and improving the safety of the explosion-proof cabinet.
[0022] In a preferred embodiment, there are two cooling fans 12 , one cooling fan 12 is a suction fan, and the other cooling fan 12 is an exhaust fan, and the position of the filter 11 corresponds to the position of the suction fan.
[0023] In the above structure, by setting the cooling fan 12 and the filter 11 structure, when the positions of the signal receiver 7 and the signal transmitter 14 coincide, the controller is used to control the two cooling fans 12 to perform suction and exhaust operations respectively, so that the heat inside the main body 1 can be quickly discharged to the outside of the main body 1, thereby improving the heat dissipation effect of the explosion-proof cabinet, and the filter 11 can filter the cold air sucked by the suction fan, thereby reducing the erosion of dust on the internal accessories of the explosion-proof cabinet, thereby improving the practicality of the explosion-proof cabinet.
[0024] In a preferred embodiment, the outer wall of the piston 9 is slidably connected to the inner wall of the moving ring 15 , and when the piston 9 and the moving ring 15 are sleeved together, the moving ring 15 is not in communication with the outside.
[0025] In the above structure, by means of the piston 9 and the movable ring 15 structure, the push exerted on the movable ring 15 is utilized to cause the connecting rod 10 to pull the piston 9 to move to the outside of the straight tube 4, thereby achieving the effects of pressure relief and heat dissipation, thereby ensuring the safety of the explosion-proof cabinet. When the temperature does not exceed the bearing limit of the movable ring 15, the piston 9 can seal the explosion-proof cabinet, thereby ensuring that external moisture cannot corrode the internal accessories, thereby improving the protection effect of the explosion-proof cabinet.
[0026] In a preferred embodiment, the outer wall of the moving ring 15 is slidably connected to the inner wall of the mounting groove 5, and the straight pipe 4 and the moving ring 15 are both made of galvanized iron metal.
[0027] In the above structure, the galvanized iron metal has the characteristics of hardness and wear resistance, which can reduce the wear of the piston 9 and the movable ring 15 during the movement process, thereby extending the service life of the piston 9 and the movable ring 15. At the same time, the galvanized iron metal also has the characteristic of low cost, which can effectively reduce the production cost of the explosion-proof cabinet.
[0028] In a preferred embodiment, the number of the connecting rods 10 is four, and the four connecting rods 10 are evenly distributed along the inner wall of the mounting groove 5 .
[0029] In the above structure, four connecting rods 10 are set up to limit the piston 9. At the same time, when the moving ring 15 moves, the piston 9 can be pulled to move smoothly, thereby improving the stability of the piston 9 during the movement, and then ensuring that the piston 9 can be smoothly reset after the hot air is discharged, and will not affect the subsequent use of the explosion-proof cabinet.
[0030] In a preferred embodiment, a controller is fixedly mounted on the bottom of the body 1 , and the controller is electrically connected to the cooling fan 12 , the signal transmitter 14 , and the signal receiver 7 , respectively.
[0031] In the above structure, through the arrangement of the controller, the signal receiver 7 and the signal transmitter 14, when the piston 9 moves, the position of the signal transmitter 14 will coincide with the position of the signal receiver 7. This process proves that there is a lot of heat inside the main body 1, causing the piston 9 to move, so that the controller automatically controls the two cooling fans 12 to perform suction and exhaust operations respectively, thereby achieving the effect of rapid heat dissipation, thereby improving the heat dissipation effect and explosion-proof effect of the explosion-proof cabinet.
[0032] Working principle: First, after the user installs the explosion-proof cabinet, a large amount of heat will be generated during the operation of the electronic components inside the explosion-proof cabinet. At this time, the air inside the main body 1 expands due to the heat, so that the piston 9 and the moving ring 15 are both pushed, so that the moving ring 15 moves and pulls the piston 9 to the outside of the straight tube 4, and then the piston 9 is separated from the straight tube 4. At this time, the inside of the main body 1 is connected to the outside, so that the inside of the main body 1 can relieve pressure to the outside, thereby achieving the effect of reducing pressure and explosion prevention. At the same time, when the piston 9 moves, the position of the signal transmitter 14 will coincide with the position of the signal receiver 7, so that the controller automatically controls the two cooling fans 12 to perform exhaust and suction operations respectively. When sucking air, the filter 11 will filter the cold air to reduce the erosion of dust on the electronic components inside the main body 1, thereby improving the explosion-proof effect, heat dissipation effect and intelligence of the explosion-proof cabinet.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic exhaust device for a positive pressure explosion-proof cabinet, comprising a body (1), characterized in that: The outer wall of the body (1) is rotatably connected with a sealing door (2); the outer wall of the body (1) is provided with a mounting hole (3); the inner wall of the mounting hole (3) is fixedly equipped with a straight tube (4); the inner wall of the straight tube (4) is provided with a mounting groove (5); the inner wall of the mounting groove (5) is fixedly equipped with a cross bar (13); the outer wall of the cross bar (13) is sleeved with a spring (8); the outer wall of the spring (8) is in contact with a moving ring (15); the outer wall of the moving ring (15) is fixedly equipped with a connecting rod (10); the end of the connecting rod (10) is fixedly equipped with a piston (9); the outer walls of the straight tube (4) and the piston (9) are respectively provided with a signal receiver (7) and a signal transmitter (14); the bottom of the body (1) is provided with a cooling fan (12); the bottom of the body (1) is fixedly equipped with a filter (11); the outer walls of the piston (9) and the straight tube (4) are both provided with grooves (6).
2. The automatic exhaust device for a positive pressure explosion-proof cabinet according to claim 1, characterized in that: The number of the cooling fans (12) is two, one of the cooling fans (12) is a suction fan, and the other cooling fan (12) is an exhaust fan, and the position of the filter (11) corresponds to the position of the suction fan.
3. The automatic exhaust device for a positive pressure explosion-proof cabinet according to claim 1, characterized in that: The outer wall of the piston (9) is slidably connected to the inner wall of the moving ring (15), and when the piston (9) and the moving ring (15) are sleeved together, the moving ring (15) is not in communication with the outside.
4. The automatic exhaust device for a positive pressure explosion-proof cabinet according to claim 1, characterized in that: The outer wall of the movable ring (15) is slidably connected to the inner wall of the mounting groove (5), and the straight pipe (4) and the movable ring (15) are both made of galvanized iron metal.
5. The automatic exhaust device for a positive pressure explosion-proof cabinet according to claim 1, characterized in that: The number of the connecting rods (10) is four, and the four connecting rods (10) are evenly distributed along the inner wall of the installation groove (5).
6. The automatic exhaust device for a positive pressure explosion-proof cabinet according to claim 1, characterized in that: A controller is fixedly mounted on the bottom of the body (1), and the controller is electrically connected to the cooling fan (12), the signal transmitter (14) and the signal receiver (7) respectively.