Dust filter structure and dustproof device for heat dissipation channel of frequency converter

Abstract

The utility model relates to dustproof equipment field especially a kind of dust filter structure and frequency converter heat dissipation passage dustproof device, including, frame body subassembly;Filter screen subassembly, the filter screen subassembly is fixed in frame body subassembly;Dust collection subassembly, the dust collection subassembly includes the scraper vertically slidingly arranged on frame body subassembly, the scraper is located the air inlet side of filter screen subassembly, the side of the scraper close to filter screen subassembly is laid with bristle, scraper is provided with dust collection groove;By installing dust filter structure, reduce dust into electric appliance box or frequency converter inside, reduce the influence of dust to internal electrical components;By setting scraper, and dust collection groove is laid on scraper, by scraper, the sundries attached on filter screen subassembly can be scraped, reduce filter screen subassembly block and affect heat dissipation effect, and when scraping sundries, the sundries scraped will fall in dust collection groove, avoid sundries scraped to fall randomly on other electrical components in electric control chamber or electric appliance box inside.

Description

Technical Field

[0001] This utility model relates to the field of dustproof equipment, and in particular to a dust filter structure and a dustproof device for a frequency converter heat dissipation channel. Background Technology

[0002] As heavy-duty operating equipment in ports and docks, ship unloaders require their PLCs and transmission systems to operate stably for a long time to ensure loading and unloading efficiency, and frequency converters are key actuators of the transmission system.

[0003] The frequency converter of the ship unloader relies on the heat dissipation channel for ventilation and heat dissipation when it is working. In the port operation environment, there are serious problems such as coal dust and spring willow catkins. Dust in the environment enters the inside of the frequency converter through the heat dissipation channel. When it comes into contact with moisture in the air, it can easily cause short circuits in the internal components of the frequency converter. Floating impurities such as willow catkins can easily block the heat dissipation grille of the external electrical box, or enter the electrical box and attach to the heat dissipation grille of the frequency converter, causing the frequency converter temperature to rise (when the temperature exceeds ≥40℃, it is easy to trigger the protection shutdown), accelerating the aging of internal components and affecting the remaining lifespan. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is: how to provide a dust filter structure and a dustproof device for the heat dissipation channel of a frequency converter.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a dust filtration structure, including a frame assembly; a filter assembly, the filter assembly being fixed inside the frame assembly; and a dust collection assembly, the dust collection assembly including a scraper vertically slidably disposed on the frame assembly, the scraper being located on the air inlet side of the filter assembly, the scraper being provided with bristles on the side near the filter assembly, and a dust collection groove being provided on the scraper.

[0006] In a preferred embodiment of the dust filtration structure of this utility model: the frame assembly includes a rectangular frame plate, the filter assembly is fixed inside the frame plate, and the inner walls on both sides of the frame plate are vertically provided with sliding grooves; the dust collection assembly also includes a sliding member slidably disposed in the sliding groove, one side of the sliding member extending out of the sliding groove and fixedly connected to the scraper.

[0007] In a preferred embodiment of the dust filtration structure of this utility model: the scraper has a rectangular frame structure and the scraper is arranged perpendicular to the filter assembly; the dust collection assembly further includes a dust collection plate disposed within the scraper, and the dust collection groove is disposed on the dust collection plate.

[0008] In a preferred embodiment of the dust collection structure of this utility model: the dust collection plate is a rectangular plate adapted to the shape of the inner ring surface of the scraper, the dust collection groove is disposed on the upper surface of the dust collection plate, and the upper outer edge of the dust collection plate extends outward integrally with an overlap edge, which is placed on the upper surface of the scraper.

[0009] In a preferred embodiment of the dust filter structure of this utility model: the chute extends downward to the lower end face of the frame plate, and a detachable seal is provided at the lower end opening of the chute.

[0010] In a preferred embodiment of the dust filtration structure of this utility model: the dust collection assembly further includes a dust baffle plate disposed on the scraper, the dust baffle plate being located on the side of the scraper away from the filter assembly.

[0011] In a preferred embodiment of the dust filter structure of this utility model, the dust baffle and the scraper are hinged together.

[0012] In a preferred embodiment of the dust filtration structure of this utility model: the filter assembly includes a first filter and a second filter arranged sequentially along the air inlet direction, the mesh size of the first filter is larger than that of the second filter, and the edges of the first filter and the second filter are both fixed to the inner ring surface of the frame plate.

[0013] In a preferred embodiment of the dust filtration structure described in this utility model: the first filter screen is a steel wire mesh, and the second filter screen is a nylon mesh.

[0014] This application also proposes a dustproof device for the heat dissipation channel of a frequency converter, including a dust filter structure, which is detachably installed on the heat dissipation channel of the side wall of the frequency converter.

[0015] The beneficial effects of this utility model are as follows: by installing a dust filter structure, the entry of dust into the electrical enclosure or the inverter is reduced, thus reducing the impact of dust on internal electrical components; by setting a scraper and arranging a dust collection groove on the scraper, on the one hand, when the debris attached to the filter assembly falls due to gravity, it will fall into the dust collection groove, preventing the debris from falling randomly onto other electrical components inside the electrical control room or the electrical enclosure; on the other hand, the scraper can remove the debris attached to the filter assembly, reducing the clogging of the filter assembly and affecting the heat dissipation effect, and when removing the debris, the scraped debris will fall into the dust collection groove, preventing the scraped debris from falling randomly onto other electrical components inside the electrical control room or the electrical enclosure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 A schematic diagram of the overall structure of the dust filter is shown; Figure 2 A schematic diagram showing the relative positions of the scraper and the dust collection plate is provided. Figure 3 A structural schematic diagram of the bottom position of the frame plate is shown; Figure 4 A schematic diagram of the scraper structure is shown; Figure 5 An enlarged schematic diagram of the filter assembly installation is shown. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0019] Example 1, referring to Figures 1 to 5 This embodiment provides a dust filter structure, including: The frame assembly 1 includes a rectangular frame panel 11, which is made of plastic or wood.

[0020] Filter assembly 2 is fixed inside frame assembly 1. Specifically, filter assembly 2 is fixed inside frame plate 11. Filter assembly 2 includes a first filter 21 and a second filter 22 arranged sequentially along the air inlet direction. The mesh size of the first filter 21 is larger than that of the second filter 22. The edges of the first filter 21 and the second filter 22 are both fixed to the inner ring surface of frame plate 11. The first filter 21 is a wire mesh and the second filter 22 is a nylon mesh. A double-layer filter structure combining the first filter 21 and the second filter 22 is adopted. The outer first filter 21 filters large particles of debris, and the inner second filter 22 filters dust, thereby improving the filtration effect.

[0021] The dust collection assembly 3 includes a scraper 31 vertically slidably mounted on the frame assembly 1. The scraper 31 is located on the air inlet side of the filter assembly 2. The side of the scraper 31 closest to the filter assembly 2 is provided with bristles 32. The side of the scraper 31 with bristles 32 is in contact with the air inlet side of the first filter 21. A dust collection groove 33 is provided on the scraper 31. The scraper 31 can periodically scrape off the debris attached to the filter assembly 2, ensuring the air permeability of the filter assembly 2 and reducing the problem of reduced heat dissipation due to blockage. When scraping off debris, the scraped debris is collected in the dust collection groove 33 to prevent it from being scattered randomly and affecting other electrical components. During normal use, the scraper 31 is reset to the lower side of the filter assembly 2, which can catch most of the debris that falls from the filter assembly 2 due to gravity, preventing the debris from falling onto other electrical components.

[0022] The dust filter structure of this application is suitable for the heat dissipation channel on the side of electrical equipment, such as the heat dissipation channel on the side of electrical box or frequency converter. When in use, the side of the dust filter structure near the second filter screen 22 is attached to the outside of the heat dissipation channel of the electrical equipment, and then the frame plate 11 is fixed to the electrical equipment with screws.

[0023] Furthermore, refer to Figures 1 to 3 The inner walls on both sides of the frame plate 11 are vertically provided with grooves 12, and the positions of the grooves 12 on both sides of the frame plate 11 are corresponding. The dust collection assembly 3 also includes a sliding member 34 that is slidably disposed in the groove 12. The shape of the sliding member 34 is adapted to the groove 12. One side of the sliding member 34 extends out of the groove 12 and is fixedly connected to the scraper 31. Through the cooperation of the sliding member 34 and the groove 12, the scraper 31 is installed and slides vertically along the frame plate 11.

[0024] To facilitate the installation of the sliding member 34 into the groove 12 and to support the scraper 31, giving the scraper 31 an initial position, the groove 12 extends downwards to the lower end face of the frame plate 11. A detachable plug 36 is installed at the lower opening of the groove 12. The lower end of the frame plate 11 has an opening for the scraper 31 to be installed. The width of the scraper 31 is slightly smaller than the distance between the two inner ends of the frame plate 11. During installation, the plug 36 at the lower end of the groove 12 is removed, and the sliding members 34 on both sides of the scraper 31 are inserted through the groove 12. The lower openings are respectively placed into the slide grooves 12 on both sides of the frame plate 11. Then, the seal 36 is re-inserted into the lower opening of the slide groove 12. The seal 36 can be bolted and installed in a detachable manner at the lower opening of the slide groove 12 through threaded connection. The seal 36 extends into the slide groove 12 to a certain length. During normal operation, the sliding member 34 is located above the seal 36. The seal 36 provides overall support for the sliding member 34 and the scraper 31, so that the scraper 31 is located at the lower air inlet side of the filter assembly 2 to catch the debris falling from the filter assembly 2.

[0025] Example 2, refer to Figures 1 to 4 The scraper 31 has a rectangular frame structure and is set vertically to the filter assembly 2, so that the scraper 31 has a certain length on the air inlet side of the filter assembly 2 to better catch the falling debris.

[0026] To facilitate the cleaning of debris collected in the dust collection trough 33, the dust collection assembly 3 also includes a dust collection plate 35 disposed in the scraper 31. The dust collection trough 33 is disposed on the dust collection plate 35. Specifically, the dust collection plate 35 is a rectangular plate adapted to the shape of the inner annular surface of the scraper 31. The dust collection trough 33 is disposed on the upper surface of the dust collection plate 35. An overlapping edge 351 extends outward integrally from the upper outer edge of the dust collection plate 35 and is placed on the upper surface of the scraper 31.

[0027] The dust collection plate 35 is placed inside the scraper 31. The upper end of the scraper 31 supports the edge 351, thereby supporting the entire dust collection plate 35. The dust collection trough 33 is set on the dust collection plate 35. When cleaning the debris collected in the dust collection trough 33, the dust collection plate 35 can be directly removed from the scraper 31 to empty the debris in the dust collection trough 33. This avoids the problem of having to disassemble the scraper 31 when cleaning the dust collection trough 33, which is set on the scraper 31 as a whole, thus improving the portability of use.

[0028] Furthermore, in order to reduce the scattering of debris when scraping away debris and to collect more debris in the dust collection trough 33, the dust collection assembly 3 also includes a dust baffle 37 disposed on the scraper 31. The dust baffle 37 is located on the side of the scraper 31 away from the filter assembly 2, and the dust baffle 37 and the scraper 31 are hinged together.

[0029] When the scraper 31 scrapes away debris from the filter assembly 2, the dust baffle 37 moves up and down with the scraper 31, blocking the scraper 31 on the side away from the filter assembly 2, preventing debris from falling outwards, and improving the collection of debris by the dust collection groove 33 on the dust collection plate 35. The baffle and the scraper 31 are hinged. When debris in the dust collection groove 33 needs to be cleaned, the baffle can be rotated to a horizontal position or tilted downwards to avoid blocking the dust collection plate 35 from being removed. The hinge structure between the baffle and the scraper 31 adopts a hinge structure with a certain rotational damping so that the baffle can maintain the current angle after rotation. This is existing technology and will not be described in detail. The baffle is provided with an arc-shaped groove for hand gripping. By holding this gripping part and applying force up and down, the scraper 31 can be moved up and down as a whole to scrape away debris.

[0030] Example 3: This example provides a dustproof device for the heat dissipation channel of a frequency converter, including a dust filter structure, which is detachably installed on the heat dissipation channel of the frequency converter side wall.

[0031] The frequency converter of the ship unloader is generally installed in the electrical enclosure. Therefore, when installing the dust filter structure, the dust filter structure can be installed separately in the heat dissipation channel of the frequency converter or in the heat dissipation channel of the electrical enclosure, or both in the heat dissipation channel of the electrical enclosure and the frequency converter. Since the frequency converter is a key actuator of the transmission system, and the dust filter structure is simple in overall structure, easy to disassemble and assemble, and inexpensive, in practical applications, the dust filter structure is installed in both the heat dissipation channel of the electrical enclosure and the heat dissipation channel of the frequency converter to ensure the normal operation of the frequency converter.

[0032] By installing a dust filter structure, the amount of dust entering the electrical enclosure or the inverter is reduced, thus minimizing the impact of dust on internal electrical components. By setting up a scraper 31 with a dust collection trough 33 on it, on the one hand, when debris attached to the filter assembly 2 falls due to gravity, it will fall into the dust collection trough 33, preventing debris from falling arbitrarily onto other electrical components inside the control room or electrical enclosure. On the other hand, the scraper 31 can remove debris attached to the filter assembly 2, reducing the risk of clogging and affecting heat dissipation. Furthermore, when removing debris, the scraped debris will fall into the dust collection trough 33, preventing it from falling arbitrarily onto other electrical components inside the control room or electrical enclosure.

[0033] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A dust filter structure, characterized in that: include, Frame component (1); Filter assembly (2), the filter assembly (2) is fixed inside the frame assembly (1); The dust collection assembly (3) includes a scraper (31) that is vertically slidably disposed on the frame assembly (1). The scraper (31) is located on the air inlet side of the filter assembly (2). The scraper (31) has bristles (32) on the side near the filter assembly (2). The scraper (31) has a dust collection groove (33).

2. The dust filter structure according to claim 1, characterized in that: The frame assembly (1) includes a rectangular frame plate (11), the filter assembly (2) is fixed inside the frame plate (11), and the inner walls on both sides of the frame plate (11) are provided with vertical grooves (12). The dust collection assembly (3) also includes a sliding member (34) that is slidably disposed in the slide groove (12). One side of the sliding member (34) extends out of the slide groove (12) and is fixedly connected to the scraper (31).

3. The dust filter structure according to claim 2, characterized in that: The scraper (31) has a rectangular frame structure and is arranged perpendicular to the filter assembly (2); The dust collection assembly (3) also includes a dust collection plate (35) disposed in the scraper (31), and the dust collection groove (33) is disposed on the dust collection plate (35).

4. The dust filter structure according to claim 3, characterized in that: The dust collection plate (35) is a rectangular plate that matches the shape of the inner ring surface of the scraper (31). The dust collection groove (33) is located on the upper surface of the dust collection plate (35). The outer edge of the upper end of the dust collection plate (35) extends outward integrally with an overlap (351), which is placed on the upper surface of the scraper (31).

5. The dust filter structure according to claim 4, characterized in that: The slide (12) extends downward to the lower end face of the frame plate (11), and a plug (36) is detachably provided at the lower opening of the slide (12).

6. The dust filter structure according to claim 5, characterized in that: The dust collection assembly (3) also includes a dust baffle (37) disposed on the scraper (31), the dust baffle (37) being located on the side of the scraper (31) away from the filter assembly (2).

7. The dust filter structure according to claim 6, characterized in that: The dust baffle (37) and the scraper (31) are hinged.

8. The dust filter structure according to claim 7, characterized in that: The filter assembly (2) includes a first filter (21) and a second filter (22) arranged sequentially along the air inlet direction. The mesh size of the first filter (21) is larger than that of the second filter (22). The edges of the first filter (21) and the second filter (22) are both fixed to the inner ring surface of the frame plate (11).

9. The dust filter structure according to claim 8, characterized in that: The first filter screen (21) is a wire mesh, and the second filter screen (22) is a nylon mesh.

10. A dustproof device for the heat dissipation channel of a frequency converter, characterized in that: The dust filter structure includes any one of claims 1 to 9, wherein the dust filter structure is detachably mounted on the heat dissipation channel of the inverter side wall.

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