Ventilation device of switch cabinet

Abstract

The utility model discloses a switch cabinet ventilation device which comprises a switch cabinet, ventilation holes are formed in the two sides of the switch cabinet, ventilation pipes are arranged in the ventilation holes, the front ends of the ventilation pipes are fixedly connected with limiting protruding rings, threaded grooves are formed in the outer walls of the ventilation pipes, and large fixing nuts are installed on the threaded grooves in a threaded mode. A motor support is fixedly connected into the ventilation pipe, a ventilation motor is fixedly connected to the front face of the motor support, a mounting shaft is fixedly connected to the output end of the ventilation motor, the mounting shaft is sleeved with a connecting lantern ring, fan blades are fixedly connected to the outer wall of the connecting lantern ring, and a filter screen frame is slidably mounted in the limiting convex ring. The fixing bolt is screwed off to release the fixing of the filter screen frame, so that the filter screen frame can be conveniently replaced or accumulated dust on the dustproof filter screen can be conveniently cleaned, at the moment, the limiting convex ring is not shielded by the filter screen frame, the fixing bolt cap can be screwed out of the limiting convex ring to be in contact with the fixing of the connecting lantern ring, and all parts in the ventilation pipe can be conveniently cleaned and maintained for a long time.

Description

Technical Field

[0001] The utility model relates to a ventilation device, in particular to a ventilation device for a switch cabinet. Background Art

[0002] Switchgear is a widely used electrical device. After prolonged operation, the electronic components in a switchgear generate heat, causing the temperature inside the switchgear to become too high. Ventilation devices are required to dissipate the heat.

[0003] For example, the Chinese patent publication number CN202223143643.0 discloses an intelligent ventilation device for a ring network switch cabinet;

[0004] A switch cabinet ventilation device disclosed in China with the publication number CN201820827069.5;

[0005] The above-mentioned existing switch cabinet ventilation devices are all directly fixed to the switch cabinet. First of all, during the early stage of transportation and installation of the switch cabinet, it is inevitable that a certain amount of vibration will be caused, and the vibration can cause damage or displacement of the internal components of the ventilation device. Later, if the internal motor or fan blades are damaged, it is difficult to easily replace and repair them. Utility Model Content

[0006] The purpose of the present invention is to provide a switch cabinet ventilation device to solve the existing problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a switch cabinet ventilation device, comprising a switch cabinet, ventilation holes are provided on both sides of the switch cabinet, ventilation pipes are arranged in the ventilation holes, a limiting convex ring is fixed to the front end of the ventilation pipe, a threaded groove is provided on the outer wall of the ventilation pipe, a fixed large nut is threadedly installed on the threaded groove, a motor bracket is fixed in the ventilation pipe, a ventilation motor is fixed to the front side of the motor bracket, an installation shaft is fixed to the output end of the ventilation motor, a connecting ring is sleeved on the installation shaft, a fan blade is fixed to the outer wall of the connecting ring, a filter frame is slidably installed in the limiting convex ring, and a dust filter is fixed in the filter frame.

[0008] Preferably, a limiting groove is provided on the outer wall of the mounting shaft, a limiting strip is fixedly connected to the inner wall of the connecting collar, and the limiting strip cooperates with the limiting groove.

[0009] Preferably, a threaded connection hole is provided at the front end of the installation shaft, a fixing bolt cap is threadedly installed in the threaded connection hole, and the fixing bolt cap cooperates with the connecting collar.

[0010] Preferably, a second limiting groove is provided on the front side of the limiting convex ring, and a limiting block is fixedly connected to the outer wall of the filter frame, and the limiting block cooperates with the second limiting groove.

[0011] Preferably, a limiting through hole is provided in the limiting convex ring, and a fixing bolt is provided in the limiting through hole.

[0012] Preferably, a threaded fixing hole is provided on the outer wall of the filter frame, and the threaded fixing hole is threadably matched with a fixing bolt.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The ventilation pipe can be fixed inside the ventilation hole of the switch cabinet by cooperating with the setting limit convex ring and the fixing large nut. It is convenient for installation. When the internal components of the ventilation pipe need to be replaced or repaired later, the fixing large nut can be directly unscrewed to release the fixation of the ventilation pipe. The ventilation pipe can be easily removed, which is more convenient.

[0015] 2. Unscrew the fixing bolts to release the filter frame, which is convenient for replacing the filter frame or cleaning the dust on the dust filter. At this time, the limiting convex ring is not blocked by the filter frame, and the fixing bolt cap can be unscrewed from the limiting convex ring to access the fixing of the connecting ring, which is convenient for daily cleaning and maintenance of various components in the ventilation duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial exploded view of the utility model;

[0018] Figure 3 This is a schematic diagram of the filter frame structure of the present utility model;

[0019] Figure 4 For the utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1. Switch cabinet; 2. Ventilation duct; 201. Motor bracket; 202. Ventilation motor; 203. Mounting shaft; 204. Limiting groove; 205. Threaded connection hole; 3. Limiting convex ring; 301. Second limiting groove; 302. Limiting through hole; 303. Fixing bolt; 4. Fixing large nut; 5. Connecting ring; 501. Fan blade; 502. Limiting strip; 6. Fixing bolt cap; 7. Filter frame; 701. Dust filter; 702. Limiting block; 703. Threaded fixing hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution: a switch cabinet ventilation device, comprising a switch cabinet 1, ventilation holes are opened on both sides of the switch cabinet 1, and ventilation pipes 2 are arranged in the ventilation holes. The front end of the ventilation pipe 2 is fixedly connected to a limiting convex ring 3, and the outer wall of the ventilation pipe 2 is opened. A fixed large nut 4 is threadedly installed on the thread groove, and a motor bracket 201 is fixedly connected to the ventilation pipe 2, and a ventilation motor 202 is fixedly connected to the front of the motor bracket 201. The output end of the ventilation motor 202 is fixedly connected to a mounting shaft 203, and the mounting shaft 203 is sleeved with a connecting collar 5. The outer wall of the connecting collar 5 is fixed with a fan blade 501, and a filter frame 7 is slidably installed in the limiting convex ring 3, and a dust filter 701 is fixedly connected to the filter frame 7.

[0023] In this embodiment, by setting the switch cabinet 1 and the ventilation pipe 2 separately and transporting them separately in the early stage, damage to the components in the ventilation pipe 2 can be effectively avoided. Later, the ventilation pipe 2 is inserted into the ventilation hole of the switch cabinet 1, and the limiting convex ring 3 will be stuck on one side of the ventilation hole. Then, the large nut 4 is rotated and installed from the end of the ventilation pipe 2. At this time, the large nut 4 is stuck on the other side of the ventilation hole, and then the limiting convex ring 3 and the large nut 4 are clamped on both sides of the ventilation hole to fix the ventilation pipe 2 in the ventilation hole. Starting the ventilation motor 202 can drive the installation shaft 203 to rotate, and the rotation of the installation shaft 203 will drive the connecting When the connecting ring 5 rotates, the connecting ring 5 will drive the fan blades 501 to rotate, thereby drawing air into the switch cabinet 1 to ventilate and dissipate heat inside the switch cabinet 1. The filter frame 7 is slidably installed inside the limiting convex ring 3. The dust filter 701 can be used to filter the air entering the switch cabinet 1 to prevent dust in the air from entering the switch cabinet 1. When it is necessary to replace or repair the internal components of the ventilation pipe 2 at a later time, the large fixing nut 4 can be directly unscrewed to release the fixation of the ventilation pipe 2. The ventilation pipe 2 can be easily removed, which is convenient for replacing or repairing the internal components of the ventilation pipe 2.

[0024] Among them, in order to achieve the purpose of fixing the connecting ring 5 on the installation shaft 203, this device adopts the following technical solution: a limiting groove 204 is provided on the outer wall of the installation shaft 203, and a limiting strip 502 is fixed to the inner wall of the connecting ring 5. The limiting strip 502 cooperates with the limiting groove 204. A threaded connection hole 205 is provided at the front end of the installation shaft 203. A fixing bolt cap 6 is installed in the inner thread of the threaded connection hole 205, and the fixing bolt cap 6 cooperates with the connecting ring 5.

[0025] By cooperating with the limiting groove 204 and the limiting bar 502, the sliding of the connecting ring 5 relative to the ventilation motor 202 can be restricted, so that the ventilation motor 202 can drive the connecting ring 5 to rotate synchronously. The fixing bolt cap 6 is screwed into the threaded connection hole 205 to block the front end of the installation shaft 203, and then the connecting ring 5 is clamped on the installation shaft 203. Later, the fixing bolt cap 6 can be unscrewed, and the connecting ring 5 and the fan blade 501 can be directly removed for maintenance.

[0026] Among them, in order to achieve the purpose of fixing the filter frame 7, this device adopts the following technical solutions: a second limiting groove 301 is provided on the front of the limiting convex ring 3, and a limiting block 702 is fixed to the outer wall of the filter frame 7. The limiting block 702 cooperates with the second limiting groove 301. A limiting through hole 302 is provided in the limiting through hole 302, and a fixing bolt 303 is provided in the limiting through hole 302. A threaded fixing hole 703 is provided on the outer wall of the filter frame 7, and the threaded fixing hole 703 is threadedly cooperated with the fixing bolt 303.

[0027] By cooperating with the limit block 702, the installation angle of the filter frame 7 is limited, so that the threaded fixing hole 703 is aligned with the limiting through hole 302, and the fixing bolt 303 is passed through the limiting through hole 302 and screwed into the threaded fixing hole 703, so that the filter frame 7 can be fixed inside the limiting convex ring 3. Later, the fixing bolt 303 can be unscrewed to release the fixation of the filter frame 7, which is convenient for replacing the filter frame 7 or cleaning the dust accumulated on the dust filter 701.

[0028] The working principle and usage process of the utility model: when in use, the switch cabinet 1 needs to be fixed in a suitable position, and the ventilation pipe 2 is inserted into the ventilation holes on both sides of the switch cabinet 1 of the switch cabinet 1. The limiting convex ring 3 will be stuck on one side of the ventilation hole, and then the large nut 4 is rotated and installed from the end of the ventilation pipe 2. At this time, the large nut 4 will be stuck on the other side of the ventilation hole. At this time, the ventilation pipe 2 can be fixed in the ventilation hole. Starting the ventilation motor 202 can drive the connecting ring 5 to rotate. The rotation of the connecting ring 5 can drive the fan blades 501 to rotate, and then the air is drawn into the interior of the switch cabinet 1 to ventilate and dissipate heat inside the switch cabinet 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switch cabinet ventilation device, comprising a switch cabinet (1), wherein ventilation holes are provided on both sides of the switch cabinet (1), and ventilation pipes (2) are provided in the ventilation holes, characterized in that: The front end of the ventilation pipe (2) is fixedly connected to a limiting convex ring (3), the outer wall of the ventilation pipe (2) is provided with a threaded groove, a fixed large nut (4) is threadedly installed on the threaded groove, a motor bracket (201) is fixedly connected inside the ventilation pipe (2), a ventilation motor (202) is fixedly connected to the front of the motor bracket (201), an installation shaft (203) is fixedly connected to the output end of the ventilation motor (202), a connecting ring (5) is sleeved on the installation shaft (203), a fan blade (501) is fixedly connected to the outer wall of the connecting ring (5), a filter frame (7) is slidably installed inside the limiting convex ring (3), and a dust filter (701) is fixedly connected inside the filter frame (7).

2. A switch cabinet ventilation device according to claim 1, characterized in that: The outer wall of the installation shaft (203) is provided with a limiting groove (204), the inner wall of the connecting collar (5) is fixedly connected with a limiting strip (502), and the limiting strip (502) and the limiting groove (204) cooperate with each other.

3. The switch cabinet ventilation device according to claim 1, characterized in that: A threaded connection hole (205) is provided at the front end of the installation shaft (203), a fixing bolt cap (6) is installed in the threaded connection hole (205), and the fixing bolt cap (6) cooperates with the connecting collar (5).

4. A switch cabinet ventilation device according to claim 1, characterized in that: A second limiting groove (301) is provided on the front face of the limiting convex ring (3); a limiting block (702) is fixedly connected to the outer wall of the filter frame (7); and the limiting block (702) cooperates with the second limiting groove (301).

5. The switch cabinet ventilation device according to claim 1, characterized in that: A limiting through hole (302) is provided in the limiting convex ring (3), and a fixing bolt (303) is provided in the limiting through hole (302).

6. A switch cabinet ventilation device according to claim 5, characterized in that: The outer wall of the filter frame (7) is provided with a threaded fixing hole (703), and the threaded fixing hole (703) is threadably matched with the fixing bolt (303).

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