Frequency converter anti-interference device

Abstract

The utility model discloses a frequency converter anti-interference device, which comprises a frequency converter and a box body, an anti-interference assembly is arranged on the box body, the anti-interference assembly comprises a metal net and a filter, a heat dissipation assembly is arranged at the top of the box body, the heat dissipation assembly comprises an air duct and a fan, a filter assembly is arranged at the bottom of the box body, and the filter assembly is arranged in the box body. The filter assembly comprises an inlet and a filter screen, a waterproof assembly is installed on the inner side of the inlet, and the waterproof assembly comprises a clamping plate and water-absorbent resin. The frequency converter anti-interference device can effectively conduct ventilation and heat dissipation work on a frequency converter, reduce the working temperature of the frequency converter and guarantee the working safety of the frequency converter; and when the scraper blade cannot completely clean dust on the filter screen, the filter screen is pushed by wind pressure, so that the filter screen compresses the spring and extrudes the button, and the button turns on the warning lamp to prompt personnel that the filter screen is blocked, and the anti-interference transmitter is suitable for improving the anti-interference performance of the transmitter.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter anti-interference equipment, in particular to a frequency converter anti-interference device. Background Art

[0002] In order to ensure the working safety of the inverter and prevent it from being interfered by power supply or electromagnetic, it is often necessary to use inverter anti-interference equipment. The utility model patent with patent application number CN202321195316.1 discloses an inverter anti-interference device. Through the connection groove set on the device shell, with the cooperation of the connection block, the protective cover can be easily disassembled and assembled, so as to facilitate the maintenance operation of the inverter body and facilitate use. The shielding partition set can shield the external signal, thereby reducing the inverter body from external signal interference; through the installation tube set on the protective cover, under the action of the spring itself being compressed, the movable block can be pushed to move, so that the limit rod is inserted into the device shell, so that the protective cover can be fixed, play a protective role, and reduce the situation of the inverter body being bumped. According to the technical solution disclosed by it, when the existing inverter anti-interference device is used, on the one hand, it is easy to form an insulation layer on the outside of the inverter after installation, thereby reducing the heat dissipation efficiency of the inverter. On the other hand, when performing ventilation and filtering work, it is easy to cause the filter to be blocked, which is not conducive to ensuring the heat dissipation safety of the inverter.

[0003] Therefore, how to design an anti-interference device for frequency converter has become our current problem to be solved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a frequency converter anti-interference device to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable design and is relatively convenient to use, and is suitable for improving the anti-interference performance of the transmitter.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter anti-interference device, comprising an inverter and a housing, an anti-interference component is installed on the housing, the anti-interference component includes a metal mesh and a filter, a heat dissipation component is installed on the top of the housing, the heat dissipation component includes a wind tube and a fan, a filter component is installed on the bottom of the housing, the filter component includes an inlet and a filter, a waterproof component is installed on the inner side of the inlet, the waterproof component includes a card plate and a water-absorbing resin, a cleaning component is installed on the filter, and the cleaning component includes a fan blade and a scraper.

[0006] Furthermore, the inverter is installed on the inner side of the box by bolts, a box door is installed on the outer side of the box, the metal mesh is respectively stuck on the inner side of the box and the box door, and the filter is installed on the bottom of one side of the box by bolts.

[0007] Furthermore, the wind tube is welded to the top of one side of the box body, and the fan is installed on the inner side of the wind tube by bolts.

[0008] Furthermore, the inlet is welded to the bottom of the other side of the box body, and the outer side of the filter is stuck on the inner wall of the inlet.

[0009] Furthermore, the clamping plate is installed on the inner side of the inlet by means of bolts, through holes are opened on the inner side of the clamping plate, the through holes are evenly distributed on the clamping plate, and the water-absorbing resin is bonded to the inner side of the through holes.

[0010] Furthermore, the filter is connected to the clamping plate via a spring, the fan blade is installed on the inner side of the inlet, and the fan blade is installed on one side of the filter.

[0011] Furthermore, the scraper is clamped on the other side of the filter, and the fan blade passes through the center of the filter through the bearing and is welded to the scraper.

[0012] Furthermore, a button is installed on the card plate by bolts, a warning light is installed on the box door by bolts, and the button is connected to the warning light by an electric wire.

[0013] Beneficial effects: 1. When the inverter anti-interference device is in use, the metal mesh in the box body is used to resist electromagnetic interference of the inverter, and the power supply of the inverter is connected to the filter to prevent the inverter from being interfered by pulses of the power supply, thereby ensuring the working safety of the inverter. The fan generates suction on the inside of the box through the wind tube. After being filtered by the filter, the air enters the inside of the box through the inlet, absorbs heat from the inverter, and is blown out through the wind tube, thereby effectively ventilating and cooling the inverter, reducing the working temperature of the inverter, and ensuring the working safety of the inverter.

[0014] 2. When the inverter anti-interference device is in use, when the air flows on the inside of the inlet, it drives the fan blades to rotate, and the fan blades drive the scraper to rotate to clean the filter. When the scraper cannot completely clean the dust on the filter, the filter is pushed by the wind pressure, and then the filter compresses the spring and squeezes the button. The button turns on the warning light to remind personnel that the filter is blocked so that they can deeply clean or replace the filter. When moisture enters the inside of the inlet, the water-absorbing resin absorbs moisture and expands, blocking the through hole to prevent moisture from entering the inside of the box and ensure the safety of the inverter.

[0015] 3. The inverter anti-interference device is reasonably designed, efficient and convenient to use, and is suitable for concrete mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a frequency converter anti-interference device of the utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a frequency converter anti-interference device of the utility model. Figure 2 ;

[0018] Figure 3 This is a cross-sectional view of a frequency converter anti-interference device of the utility model;

[0019] Figure 4 This is a structural schematic diagram of a card board of a frequency converter anti-interference device of the utility model;

[0020] Figure 5 This is a cross-sectional view of the inlet of a frequency converter anti-interference device of the utility model;

[0021] In the figure: 1. inverter; 2. box body; 3. box door; 4. metal mesh; 5. filter; 6. air duct; 7. fan; 8. inlet; 9. filter; 10. card plate; 11. through hole; 12. water-absorbing resin; 13. spring; 14. fan blade; 15. scraper; 16. button; 17. warning light. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figures 1 to 5The utility model provides a technical solution: an inverter anti-interference device, comprising an inverter 1 and a box 2, an anti-interference component is installed on the box 2, the anti-interference component includes a metal mesh 4 and a filter 5, a heat dissipation component is installed on the top of the box 2, the heat dissipation component includes a wind tube 6 and a fan 7, a filter component is installed on the bottom of the box 2, the filter component includes an inlet 8 and a filter 9, a waterproof component is installed on the inner side of the inlet 8, the waterproof component includes a card board 10 and a water-absorbing resin 12, a cleaning component is installed on the filter 9, the cleaning component includes a fan blade 14 and a scraper 15, the inverter 1 is installed on the inner side of the box 2 by bolts, and the outer side of the box 2 is installed A box door 3 is installed, and the metal mesh 4 is respectively stuck on the inner side of the box body 2 and the box door 3. The filter 5 is installed on the bottom of one side of the box body 2 by bolts. When in use, the metal mesh 4 in the box body 2 is used to perform anti-electromagnetic interference work on the inverter 1, and the power supply of the inverter 1 is connected to the filter 5 to avoid the inverter 1 from being interfered by the pulse of the power supply, thereby ensuring the working safety of the inverter 1. The fan 7 generates suction on the inner side of the box body 2 through the wind tube 6. After being filtered by the filter 9, the air enters the inner side of the box body 2 through the inlet 8, and then absorbs heat from the inverter 1 and is blown out through the wind tube 6, thereby effectively ventilating and cooling the inverter 1, reducing the working temperature of the inverter 1, and ensuring the working safety of the inverter 1.

[0024] In this embodiment, the air duct 6 is welded to the top of one side of the box body 2, the fan 7 is installed on the inner side of the air duct 6 by bolts, the inlet 8 is welded to the bottom of the other side of the box body 2, the outer side of the filter 9 is clamped on the inner wall of the inlet 8, the card plate 10 is installed on the inner side of the inlet 8 by bolts, the inner side of the card plate 10 is provided with through holes 11, the through holes 11 are evenly distributed on the card plate 10, the water-absorbing resin 12 is bonded to the inner side of the through holes 11, the filter 9 is connected to the card plate 10 by a spring 13, the fan blade 14 is installed on the inner side of the inlet 8, the fan blade 14 is installed on one side of the filter 9, the scraper 15 is clamped on the other side of the filter 9, the fan blade 14 passes through the center of the filter 9 through a bearing and is welded on the scraper 15, the card plate 1 0 is installed with a button 16 by bolts, and a warning light 17 is installed on the box door 3 by bolts. The button 16 is connected to the warning light 17 by an electric wire. When in use, when air flows on the inner side of the inlet 8, the fan blade 14 is driven to rotate, and the fan blade 14 drives the scraper 15 to rotate to clean the filter 9. When the scraper 15 cannot completely clean the dust on the filter 9, the filter 9 is pushed by the wind pressure, and then the filter 9 compresses the spring 13 and squeezes the button 16. The button 16 turns on the warning light 17 to remind personnel that the filter 9 is blocked, so that the personnel can deeply clean or replace the filter 9. When moisture enters the inner side of the inlet 8, the water-absorbing resin 12 expands after absorbing moisture and blocks the through hole 11, thereby preventing moisture from entering the inner side of the box body 2 and ensuring the safety of the inverter 1.

[0025] The inverter anti-interference device provides power to all electrical equipment through an external power supply. When in use, the metal mesh 4 in the box 2 is used to perform anti-electromagnetic interference on the inverter 1, and the power supply of the inverter 1 is connected to the filter 5 to prevent the inverter 1 from being interfered by the pulse of the power supply, thereby ensuring the working safety of the inverter 1. The fan 7 generates suction on the inner side of the box 2 through the air duct 6. After being filtered by the filter 9, the air enters the inner side of the box 2 through the inlet 8, and then absorbs heat from the inverter 1 and is blown out through the air duct 6, thereby effectively ventilating and cooling the inverter 1, reducing the working temperature of the inverter 1, and ensuring the working safety of the inverter. 1 is safe for operation. When air flows on the inner side of the inlet 8, the fan blade 14 is driven to rotate. The fan blade 14 drives the scraper 15 to rotate to clean the filter 9. When the scraper 15 cannot completely clean the dust on the filter 9, the filter 9 is pushed by the wind pressure, and then the filter 9 compresses the spring 13 and squeezes the button 16. The button 16 turns on the warning light 17 to remind personnel that the filter 9 is blocked, so that the personnel can deeply clean or replace the filter 9. When moisture enters the inner side of the inlet 8, the water-absorbing resin 12 absorbs moisture and expands to block the through hole 11, thereby preventing moisture from entering the inner side of the box body 2 and ensuring the safety of the inverter 1.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A frequency converter anti-interference device, comprising a frequency converter (1) and a housing (2), wherein an anti-interference component is installed on the housing (2), wherein the anti-interference component comprises a metal mesh (4) and a filter (5), wherein: A heat dissipation component is installed on the top of the box (2), and the heat dissipation component includes a wind tube (6) and a fan (7). A filter component is installed on the bottom of the box (2), and the filter component includes an inlet (8) and a filter screen (9). A waterproof component is installed on the inner side of the inlet (8), and the waterproof component includes a card plate (10) and a water-absorbing resin (12). A cleaning component is installed on the filter screen (9), and the cleaning component includes a fan blade (14) and a scraper (15).

2. The anti-interference device for a frequency converter according to claim 1, characterized in that: The frequency converter (1) is mounted on the inner side of a box body (2) by means of bolts, a box door (3) is mounted on the outer side of the box body (2), the metal mesh (4) is respectively clamped on the inner side of the box body (2) and the box door (3), and the filter (5) is mounted on the bottom of one side of the box body (2) by means of bolts.

3. The frequency converter anti-interference device according to claim 2, characterized in that: The wind tube (6) is welded to the top of one side of the box body (2), and the fan (7) is installed on the inner side of the wind tube (6) by means of bolts.

4. The frequency converter anti-interference device according to claim 3, characterized in that: The inlet (8) is welded to the bottom of the other side of the box body (2), and the outer side of the filter (9) is clamped on the inner wall of the inlet (8).

5. The frequency converter anti-interference device according to claim 1, characterized in that: The card plate (10) is installed on the inner side of the inlet (8) by means of bolts. Through holes (11) are opened on the inner side of the card plate (10). The through holes (11) are evenly distributed on the card plate (10). The water-absorbing resin (12) is bonded to the inner side of the through holes (11).

6. The frequency converter anti-interference device according to claim 5, characterized in that: The filter screen (9) is connected to the clamping plate (10) via a spring (13); the fan blade (14) is installed on the inner side of the inlet (8); and the fan blade (14) is installed on one side of the filter screen (9).

7. The frequency converter anti-interference device according to claim 6, characterized in that: The scraper (15) is clamped on the other side of the filter (9), and the fan blade (14) passes through the center of the filter (9) through a bearing and is welded to the scraper (15).

8. The frequency converter anti-interference device according to claim 2, characterized in that: A button (16) is installed on the card plate (10) via bolts, a warning light (17) is installed on the box door (3) via bolts, and the button (16) is connected to the warning light (17) via an electric wire.

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