A frequency conversion cabinet for chemical engineering electrical equipment

Abstract

The present invention relates to the technical field of frequency conversion cabinets, and in particular to a frequency conversion cabinet for chemical electrical equipment. Its technical solution includes: a dustproof component, including a filter, a metal sheet, a magnetic block, an insulating baffle, a windshield, a slider and a conversion component, the filter slides left and right on the top inner wall of the elevated warehouse, the left and right ends of the filter are fixedly installed with metal sheets, the top inner wall of the elevated warehouse and the magnetic blocks are fixedly installed on the extension lines of the two ends of the filter, and the inner wall of the elevated warehouse and the insulating baffle are connected by sliding up and down between the magnetic block and the metal sheet. In the present invention, when there is too much dust attached to the part where the filter is connected to the air duct, the wind force on the windshield is less than the gravity of the slider, and the windshield and the slider move downward under the action of gravity. At this time, the slider and the conversion component cooperate to convert the states of the two insulating baffles to each other, thereby changing the position where the filter is connected to the air duct and increasing the air circulation at the filter.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency conversion cabinets, and particularly to a frequency conversion cabinet for chemical industrial electrical equipment. Background Art

[0002] The electrical equipment essential for chemical plants includes generators, switchboards, transformers, and switch control equipment. These electrical equipment are often controlled by frequency conversion cabinets. A frequency conversion cabinet is an electrical control cabinet equipped with a frequency converter. The electrical frequency conversion cabinet has functions such as power switching and protection, frequency conversion speed regulation, intuitive control, safety protection, and energy conservation.

[0003] In the patent document with the publication number CN117596805A that has been published, an intelligent heat dissipation frequency conversion cabinet is disclosed. When negative pressure is generated when air passes through the upper end of the exhaust duct, it first drives the outside air to enter the bottom of the cabinet through the intake grille, then enters the edge housing, and then enters the annular groove along the dust-proof mesh holes and air ducts. The air then passes through the water-absorbing member, ventilation openings, and second ventilation holes into the upper housing, and then enters the air collecting hood through the third ventilation holes and the first ventilation holes, and finally is discharged from the upper end of the exhaust duct, thereby cooling the electronic components and wires installed above the partition board.

[0004] However, when this intelligent heat dissipation frequency conversion cabinet is in use, dust in the air is intercepted by the dust-proof net. As the air circulates, the dust attached to the dust-proof net gradually increases, the ventilation volume of the dust-proof net gradually decreases, and the amount of air entering the frequency conversion cabinet decreases, resulting in a poor cooling effect of the frequency conversion cabinet. Summary of the Invention

[0005] The purpose of the present invention is to address the problem in the background art that the dust attached to the dust-proof net hinders the flow of air, and to propose a frequency conversion cabinet for chemical industrial electrical equipment.

[0006] The technical solution of the present invention: A frequency conversion cabinet for chemical industrial electrical equipment, comprising: A frequency conversion cabinet for chemical industrial electrical equipment, characterized in that it includes: a frequency conversion cabinet housing, a raised bin is fixedly installed at the bottom of the frequency conversion cabinet housing, and an air duct with an internally installed fan is fixedly installed at the center of the top of the raised bin;

[0007] A dust-proof component, including a filter screen, metal sheets, magnetic blocks, insulating baffles, wind deflectors, sliders, and a conversion component. The filter screen slides left and right on the inner wall of the top of the raised bin. Metal sheets are fixedly installed at both the left and right ends of the filter screen. Magnetic blocks are fixedly installed on the inner wall of the top of the raised bin and on the extension lines of both ends of the filter screen. Insulating baffles are slidably connected up and down between the magnetic blocks and the metal sheets on the inner wall of the raised bin. A slider is slidably connected to the inner wall of the air duct, and a wind deflector is fixedly installed at the top of the slider;

[0008] The filter screen is divided into left and right parts. The left half of the filter screen is aligned with the air duct, and the windshield is located on the extension line of the end of the air duct.

[0009] Optionally, the windshield adopts an umbrella-like structure. The bottom area of the windshield is larger than the opening area of the air duct. A plurality of hollow plastic columns are fixedly installed at the bottom of the windshield, and wool sheets are fixedly installed at the side of the hollow plastic columns at the bottom of the windshield.

[0010] Optionally, the conversion assembly includes a lever, a hexagonal prism, a vertical plate, and an elastic plate. The middle of the lever is rotatably connected to the air duct. A hexagonal prism perpendicular to the lever is fixedly installed at the center of the top of the lever. Symmetrically arranged vertical plates are fixedly installed on the side of the slider. The two vertical plates are respectively located on the left and right sides of the hexagonal prism. An elastic plate is rotatably connected to the bottom of the vertical plate. A torsion spring is elastically connected between the elastic plate and the vertical plate. The hexagonal prism is located directly below the vertical plate.

[0011] Optionally, the vertical plate is misaligned with the hexagonal prism. Docking blocks are fixedly installed at both ends of the lever. Extension columns are fixedly installed on the front and back sides of the insulating baffle. The docking block adopts a U-shaped structure. The extension column slides within the opening of the docking block. A chute for the slider to slide up and down is provided on the inner wall of the air duct.

[0012] Optionally, a limiting block is fixedly installed in the chute of the air duct. The metal sheet is one of an iron sheet, a cobalt sheet, or a nickel sheet. An insulating block is provided between the insulating baffle and the metal sheet.

[0013] Optionally, it further includes a sealed dust collection assembly. The sealed dust collection assembly includes a support plate, a rubber baffle, an airbag, and a first baffle. A support plate is fixedly installed on the inner wall of the elevated bin and located at the filter screen. A rubber baffle is fixedly installed on the top of the support plate. The two ends of the airbag are respectively fixedly connected to the support plate and the metal sheet. A first baffle is rotatably connected to the inner wall of the airbag. An outer clamping block is fixedly installed on the inner wall of the airbag and below the first baffle.

[0014] Optionally, a clamping plate is clamped on the inner wall of the top of the elevated bin. A storage groove is formed between the clamping plate and the elevated bin. A rubber baffle is fixedly installed on the top of the support plate. A sealed space is formed between the rubber baffle and the storage groove. The blocking block is fixedly installed on the inner wall of the clamping plate.

[0015] Optionally, a dust collection cavity is provided inside the support plate. A second baffle is rotatably connected to the connection between the airbag and the support plate. An inner clamping block is fixedly installed between the airbag and the second baffle.

[0016] Optionally, it also includes a force-boosting component, which includes a force-storage spring, a connecting plate, a contact block and a spring sheet, the metal sheet is elastically connected to the force-storage spring on one side facing the center of the cushion bin, the end of the force-storage spring is fixedly installed with a connecting plate, the side of the connecting plate away from the force-storage spring is fixedly connected to the airbag, the end of the connecting plate is fixedly installed with a contact block, the inner wall of the cushion bin is fixedly installed with a spring sheet symmetrically arranged front and back, and the spring sheet is located on the moving path of the contact block.

[0017] Optionally, the contact block adopts a ladder block structure, the front and rear sides of the airbag are offset from the spring sheet, a telescopic rod is passed through the center of the force storage spring, the left and right ends of the force storage spring are respectively fixedly connected to the metal sheet and the connecting plate, and an air suction port is opened on the side of the raised bin.

[0018] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0019] In the present invention, when too much dust adheres to the part where the filter screen and the air duct are connected, the wind force received by the wind shield is smaller than the gravity of the slider, and the wind shield and the slider move downward under the action of gravity. At this time, the slider and the conversion assembly cooperate to convert the states of the two insulating baffles to each other, thereby changing the position where the filter screen and the air duct are connected, and increasing the air circulation at the filter screen.

[0020] Furthermore, when the filter switches its position, the filter moves and contacts the brush, which scrapes off the dust attached to the filter. The rubber baffle and the storage groove form an enclosed space to prevent dust leakage and prevent dust from entering the air duct when scraping. At the same time, the airbag sucks the dust in the enclosed space into the airbag. When the filter switches its position again, the airbag sprays the dust inside into the dust collecting chamber.

[0021] Furthermore, the metal sheet drives the connecting plate to move through the force storage spring. At this time, the connecting plate stretches the airbag, and the spring sheet hinders the movement of the contact block. At this time, the force storage spring is stretched. When the elastic force of the force storage spring is greater than the resistance of the spring sheet to the contact block, the spring sheet is bent under the action of the force storage spring. At this time, the force storage spring recovers its deformation from the stretched state, and the connecting plate moves quickly, causing the airbag to stretch and expand quickly, thereby increasing the suction force of the airbag and improving the dust absorbing effect of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is provided;

[0023] Figure 2 A schematic cross-sectional view of a cushioning bin structure according to an embodiment of the present invention is provided;

[0024] Figure 3 A schematic diagram of the filter structure of an embodiment of the present invention is given;

[0025] Figure 4 Given Figure 3 A schematic diagram of the enlarged structure of the spring sheet in part A;

[0026] Figure 5 A schematic diagram of the structure of a windshield according to an embodiment of the present invention is given;

[0027] Figure 6 Given Figure 5 A magnified schematic diagram of the hexagonal prism structure in part B;

[0028] Figure 7 A schematic diagram of the structure of a hollow plastic column according to an embodiment of the present invention is provided;

[0029] Figure 8 A schematic diagram of the structure of an air guide duct according to an embodiment of the present invention is given;

[0030] Figure 9 A schematic diagram of a front and cross-sectional view of a raised bunker structure according to an embodiment of the present invention is provided;

[0031] Figure 10 A schematic front and cross-sectional view of an airbag structure according to an embodiment of the present invention is given.

[0032] Figure numerals: 1. inverter cabinet housing; 2. raised bin; 3. air inlet; 4. dustproof component; 41. filter; 42. metal sheet; 43. magnetic block; 44. insulating baffle; 45. slide groove; 46. wind shield; 47. lever; 48. docking block; 49. hexagonal prism; 410. vertical plate; 411. elastic plate; 412. obstruction block; 413. slider; 414. hollow plastic column; 5. air duct; 6. sealed dust collection component; 61. card plate; 62. storage slot; 63. support plate; 64. brush; 65. rubber baffle; 66. airbag; 67. first baffle; 68. second baffle; 69. dust collection chamber; 7. force-enhancing component; 71. force storage spring; 72. telescopic rod; 73. connecting plate; 74. contact block; 75. spring sheet. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] The components of the embodiments of the present invention generally described and illustrated in the figures herein could be arranged and designed in a wide variety of different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed but is merely representative of selected embodiments of the present invention.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Embodiment 1

[0041] This embodiment provides a frequency conversion cabinet for chemical industrial electrical equipment. As Figure 1 shown, it includes a frequency conversion cabinet housing 1. A raised bin 2 is fixedly installed at the bottom of the frequency conversion cabinet housing 1. An air outlet is provided on the side of the frequency conversion cabinet housing 1, and an air suction port 3 is provided on the side of the raised bin 2. A duct 5 with a fan installed inside is fixedly installed at the center of the top of the raised bin 2.

[0042] By energizing and rotating the fan in the duct 5 to suck air, the air is sucked into the raised bin 2 from the air suction port 3 and flows through the duct 5 into the frequency conversion cabinet housing 1 to dissipate heat from the equipment inside the frequency conversion cabinet housing 1.

[0043] As Figure 2 shown, a dust-proof component 4 is arranged inside the raised bin 2. As Figure 3 and Figure 5 shown, the dust-proof component 4 includes a filter screen 41, a metal sheet 42, a magnetic block 43, an insulating baffle 44, a wind deflector 46, a slider 413 and a conversion component. The filter screen 41 slides left and right on the inner wall of the top of the raised bin 2. The filter screen 41 is divided into left and right parts. The left half of the filter screen 41 is aligned with the duct 5, and the air sucked by the fan enters the frequency conversion cabinet housing 1 along the left half of the filter screen 41 and the duct 5.

[0044] As Figure 7 and Figure 8 shown, a slider 413 is slidably connected to the inner wall of the air duct 5, a wind shield 46 is fixedly installed at the top of the slider 413, and the wind shield 46 adopts an umbrella-like structure.

[0045] The fan blows the wind towards the wind shield 46. A plurality of hollow plastic columns 414 are fixedly installed at the bottom of the wind shield 46, and a wool sheet is fixedly installed at the bottom of the wind shield 46 and on the side of the hollow plastic columns 414.

[0046] The wool at the bottom of the wind shield 46 is blown by the wind, and the wool continuously rubs against the hollow plastic columns 414 to generate static electricity. Since the filter screen 41 intercepts large dust particles, there are small dust particles entering the air duct 5. At this time, the static electricity generated by the friction between the wool and the hollow plastic columns 414 adsorbs the small dust particles.

[0047] The bottom area of the wind shield 46 is larger than the opening area of the air duct 5, and the wind shield 46 completely covers the top of the air duct 5. Therefore, the fan blows all the inhaled air towards the wind shield 46, and at the same time, the wind shield 46 guides and diffuses the wind, so that the air entering the inside of the frequency conversion cabinet housing 1 is evenly blown in.

[0048] As Figure 8 shown, a sliding groove 45 for the up and down sliding of the slider 413 is provided on the inner wall of the air duct 5, and a limiting block is fixedly installed in the sliding groove 45 of the air duct 5 to prevent the slider 413 from detaching from the sliding groove 45.

[0049] When the air flow rate at the left half part of the filter screen 41 is greater than the set value, the wind force received by the wind shield 46 is greater than the gravity of the slider 413, and the wind shield 46 is pushed up by the wind and pulls the slider 413 to move upward; when the air flow rate at the left half part of the filter screen 41 is less than the set value, the wind force received by the wind shield 46 is less than the gravity of the slider 413, and the wind shield 46 and the slider 413 move downward under the action of gravity.

[0050] As Figure 3 shown, metal sheets 42 are fixedly installed at both the left and right ends of the filter screen 41. Magnetic blocks 43 are fixedly installed on the top inner wall of the elevation bin 2 and on the extension lines of both ends of the filter screen 41. An insulating baffle 44 is slidably connected up and down between the magnetic blocks 43 and the metal sheets 42 on the inner wall of the elevation bin 2. The metal sheet 42 is made of one of iron sheet, cobalt sheet or nickel sheet, and an obstacle block 412 is provided between the insulating baffle 44 and the metal sheet 42.

[0051] The obstacle block 412 restricts the movement of the metal sheet 42 to prevent the metal sheet 42 from being adsorbed on the magnetic block 43, so that the insulating baffle 44 can slide between the metal sheet 42 and the magnetic block 43.

[0052] As Figure 5 andFigure 6 As shown, the conversion component includes a lever 47, a hexagonal prism 49, a vertical plate 410 and an elastic plate 411. The middle of the lever 47 is rotatably connected to the air duct 5. At the center of the top of the lever 47, a hexagonal prism 49 perpendicular to the lever 47 is fixedly installed. Symmetrically arranged vertical plates 410 are fixedly installed on the side of the slider 413. The two vertical plates 410 are respectively located on the left and right sides of the hexagonal prism 49. The bottom of the vertical plate 410 is rotatably connected to the elastic plate 411. A torsion spring is elastically connected between the elastic plate 411 and the vertical plate 410. The hexagonal prism 49 is located directly below the vertical plate 410.

[0053] When the windshield 46 and the slider 413 move downward, the slider 413 drives the vertical plate 410 and the elastic plate 411 to move. The elastic plate 411 moves downward and contacts the hexagonal prism 49. Since the lever 47 is in an inclined state at this time, its end abuts on the elevated bin 2. The elastic plate 411 is rotated by the extrusion of the hexagonal prism 49. The elastic plate 411 abuts against the side of the vertical plate 410 and compresses the torsion spring. When the elastic plate 411 moves to the lower side of the hexagonal prism 49, the torsion spring resets the elastic plate 411. The elastic plate 411 rotates and bounces the hexagonal prism 49 upward. The hexagonal prism 49 deflects to the right under the action of inertia. Therefore, the lever 47 deflects and its inclination direction changes. During the reset process of the vertical plate 410 and the elastic plate 411, when the elastic plate 411 pulls upward and contacts the hexagonal prism 49, the force exerted by the elastic plate 411 on the hexagonal prism 49 is small. The hexagonal prism 49 is first deflected by the extrusion of the elastic plate 411, and then after the elastic plate 411 is separated from the hexagonal prism 49, the hexagonal prism 49 resets.

[0054] The vertical plate 410 is misaligned with the hexagonal prism 49 to prevent the vertical plate 410 from obstructing the movement of the hexagonal prism 49. Docking blocks 48 are fixedly installed at both ends of the lever 47. Extension columns are fixedly installed on the front and back sides of the insulating baffle 44. The docking block 48 adopts a U-shaped structure, and the extension column slides within the opening of the docking block 48. Through the cooperation of the docking block 48 and the extension column, it is avoided that the insulating baffle 44 is stuck by the docking block 48 when sliding up and down.

[0055] The change in the inclination direction of the lever 47 causes the docking block 48 to adjust the positions of the two insulating baffles 44. At this time, the insulating baffle 44 on the left side of the filter screen 41 moves upward. The magnet 43 on the left side of the filter screen 41 attracts the metal sheet 42. The insulating baffle 44 on the right side of the lever 47 moves downward. The insulating baffle 44 separates the magnet 43 and the metal sheet 42. The filter screen 41 moves to the left. The right half of the filter screen 41 is aligned with the air duct 5 to remove dust from the air entering the interior of the air duct 5.

[0056] During the conversion process of the filter 41, the vertical plate 410 and the elastic plate 411 move downward, the elastic plate 411 contacts the hexagonal prism 49, and the elastic plate 411 rotates and compresses the torque spring. When the elastic plate 411 moves from one side of the hexagonal prism 49 to the other side, the elastic force of the torque spring causes the elastic plate 411 to apply a thrust to the inclined surface of the hexagonal prism 49. After the elastic plate 411 is separated from the hexagonal prism 49, the hexagonal prism 49 rotates from the left side to the right side under the action of inertia.

[0057] After the filter 41 is switched, the ventilation volume will gradually increase due to the change in the position of the filter 41, and the vertical plate 410 and the elastic plate 411 will move upward. Since it takes a certain amount of time to change the position of the filter 41, the vertical plate 410 and the elastic plate 411 will move upward slowly. At this time, the elastic plate 411 will apply a slight thrust to the hexagonal prism 49, and the hexagonal prism 49 will rotate slightly, but the hexagonal prism 49 cannot be rotated from one side to the other.

[0058] In this embodiment, when too much dust adheres to the part where the filter 41 is connected to the air duct 5, the wind force received by the wind shield 46 is less than the gravity of the slider 413, and the wind shield 46 and the slider 413 move downward under the action of gravity. At this time, the slider 413 and the conversion assembly cooperate to convert the states of the two insulating baffles 44 to each other, thereby changing the position where the filter 41 is connected to the air duct 5 and increasing the air circulation at the filter 41.

[0059] Example 2

[0060] Based on Example 1, this embodiment proposes a frequency conversion cabinet for chemical electrical equipment, such as Figure 2 and 3 As shown, it also includes a sealed dust collecting assembly 6, which includes a support plate 63, a rubber baffle 65, an airbag 66 and a first baffle 67. The support plate 63 is fixedly installed on the inner wall of the bin 2 and is located below the filter 41. The rubber baffle 65 is fixedly installed on the top of the support plate 63, and the two ends of the airbag 66 are respectively fixedly connected to the support plate 63 and the connecting plate 73.

[0061] like Figure 2 and Figure 9 As shown, a card plate 61 is clamped on the top inner wall of the raised bin 2, a storage groove 62 is formed between the card plate 61 and the raised bin 2, a rubber baffle 65 is fixedly installed on the top of the support plate 63, and the rubber baffle 65 and the storage groove 62 form a closed space.

[0062] The obstruction block 412 is fixedly installed on the inner wall of the card plate 61, and a brush 64 is fixedly installed on the top of the support plate 63. The filter 41 moves to contact the brush 64, and the brush 64 scrapes off the dust attached to the filter 41. The rubber baffle 65 and the storage groove 62 form a closed space to prevent dust leakage, thereby preventing dust from entering the air duct 5 when scraping.

[0063] like Figure 10 As shown, the inner wall of the airbag 66 is rotatably connected to the first baffle 67, and an outer clamping block is fixedly installed on the inner wall of the airbag 66 and below the first baffle 67. The outer clamping block prevents the first baffle 67 from rotating outward. A dust collecting chamber 69 is provided inside the support plate 63. The connection between the airbag 66 and the support plate 63 is rotatably connected to the second baffle 68. An inner clamping block is fixedly installed between the airbag 66 and the second baffle 68. The inner clamping block prevents the second baffle 68 from rotating inward.

[0064] When the connecting plate 73 moves away from the supporting plate 63, the airbag 66 sucks air, the first baffle 67 rotates inward to open the airbag 66, and the second baffle 68 remains in position to close the airbag 66. At this time, the airbag 66 sucks the dust scraped from the filter 41 by the supporting plate 63 into the airbag 66; when the connecting plate 73 moves toward the supporting plate 63, the airbag 66 sprays air, the first baffle 67 remains in position to close the airbag 66, and the second baffle 68 rotates outward to open the airbag 66, blowing the dust into the dust collecting chamber 69.

[0065] In this embodiment, when the filter 41 switches its position, the filter 41 moves and contacts the brush 64, and the brush 64 scrapes off the dust attached to the filter 41. The rubber baffle 65 and the storage groove 62 form an enclosed space to prevent dust leakage and prevent dust from entering the air duct 5 when scraping. At the same time, the airbag 66 sucks air into the enclosed space to suck the dust into the airbag 66. When the filter 41 switches its position again, the airbag 66 sprays the dust inside it into the dust collecting chamber 69.

[0066] Example 3

[0067] Based on the above-mentioned embodiment 1 or 2, this embodiment proposes a frequency conversion cabinet for chemical electrical equipment, such as Figure 3 and Figure 9 As shown, it also includes a force-boosting component 7, which includes a force-storage spring 71, a connecting plate 73, a contact block 74 and a spring sheet 75. The metal sheet 42 is elastically connected to the force-storage spring 71 on one side toward the center of the cushion bin 2, and the end of the force-storage spring 71 is fixedly installed with the connecting plate 73. The side of the connecting plate 73 away from the force-storage spring 71 is fixedly connected to the airbag 66, and the end of the connecting plate 73 is fixedly installed with the contact block 74. The inner wall of the cushion bin 2 is fixedly installed with a spring sheet 75 symmetrically arranged front and back, and the spring sheet 75 is located on the moving path of the contact block 74.

[0068] When the metal sheet 42 stretches the airbag 66, the spring piece 75 obstructs the movement of the contact block 74. At this time, the energy storage spring 71 is stretched. When the elastic force of the energy storage spring 71 is greater than the resistance of the spring piece 75 to the contact block 74, the spring piece 75 is bent under the action of the energy storage spring 71, so that the connecting plate 73 and the contact block 74 move from one side of the spring piece 75 to the other side. At this time, the energy storage spring 71 recovers from the stretched state, and the magnetic block 43 moves quickly, causing the airbag 66 to stretch quickly.

[0069] As Figure 4 shown, the contact block 74 adopts a trapezoidal block structure, and the front and rear sides of the airbag 66 are misaligned with the spring piece 75 to prevent the contact block 74 from abutting against the airbag 66. A telescopic rod 72 is inserted through the center of the energy storage spring 71, and the telescopic rod 72 supports and guides the energy storage spring 71. The left and right ends of the energy storage spring 71 are respectively fixedly connected to the metal sheet 42 and the connecting plate 73.

[0070] In this embodiment, when the metal sheet 42 drives the connecting plate 73 to move by using the energy storage spring 71 and the connecting plate 73 moves to stretch the airbag 66, the spring piece 75 obstructs the movement of the contact block 74. At this time, the energy storage spring 71 is stretched. When the elastic force of the energy storage spring 71 is greater than the resistance of the spring piece 75 to the contact block 74, the spring piece 75 is bent under the action of the energy storage spring 71, so that the connecting plate 73 and the contact block 74 move from one side of the spring piece 75 to the other side. At this time, the energy storage spring 71 recovers from the stretched state, and the connecting plate 73 moves quickly, causing the airbag 66 to stretch and expand quickly, thereby improving the suction force of the airbag 66 and the effect of the airbag 66 absorbing dust.

[0071] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A frequency conversion cabinet for chemical electrical equipment, characterized in that: include: A frequency conversion cabinet housing (1), wherein a raised bin (2) is fixedly mounted at the bottom of the frequency conversion cabinet housing (1), and an air duct (5) with a fan installed inside is fixedly mounted at the top center of the raised bin (2); The dustproof component (4) comprises a filter (41), a metal sheet (42), a magnetic block (43), an insulating baffle (44), a windshield (46), a slider (413) and a conversion component, wherein the filter slides left and right on the top inner wall of the elevated bin (2), the metal sheets are fixedly installed on both left and right ends of the filter, the magnetic blocks are fixedly installed on the top inner wall of the elevated bin and on the extension lines of both ends of the filter, the insulating baffle is slidably connected to the inner wall of the elevated bin and is located between the magnetic block and the metal sheet, the inner wall of the air duct is slidably connected to the slider, and the windshield is fixedly installed on the top of the slider (413); The filter is divided into two parts, the left half of the filter is aligned with the air duct, and the wind shield is located on the extension line of the end of the air duct; The conversion assembly comprises a lever (47), a hexagonal prism (49), a vertical plate (410) and an elastic plate (411), the middle portion of the lever is rotatably connected to the air duct, a hexagonal prism perpendicular to the lever is fixedly installed at the top center of the lever, and symmetrically arranged vertical plates are fixedly installed on the sides of the slider, and the two vertical plates are respectively located on the left and right sides of the hexagonal prism, and the bottom of the vertical plate is rotatably connected to the elastic plate, and a torque spring is elastically connected between the elastic plate and the vertical plate; The vertical plate is misaligned with the hexagonal prism, docking blocks (48) are fixedly installed at both ends of the lever, extension columns are fixedly installed on the front and rear sides of the insulating baffle, the docking block adopts a U-shaped structure, the extension column slides in the opening of the docking block, and the inner wall of the air duct is provided with a sliding groove (45) for the slider to slide up and down.

2. The frequency conversion cabinet for chemical electrical equipment according to claim 1, characterized in that: The windshield adopts an umbrella-shaped structure, the bottom area of ​​the windshield is larger than the opening area of ​​the air duct, a plurality of hollow plastic columns are fixedly installed at the bottom of the windshield, and a wool piece is fixedly installed at the bottom of the windshield and on the side of the hollow plastic column.

3. The frequency conversion cabinet for chemical electrical equipment according to claim 2, characterized in that: A limit block is fixedly installed in the slide groove of the air guide pipe, the metal sheet is made of one of an iron sheet, a cobalt sheet or a nickel sheet, and an obstruction block (412) is arranged between the insulating baffle and the metal sheet.

4. The frequency conversion cabinet for chemical electrical equipment according to claim 3 is characterized in that: It also includes a sealed dust collecting assembly (6), which includes a support plate (63), a rubber baffle (65), an airbag (66) and a first baffle (67), the inner wall of the cushion bin being fixedly mounted below the filter screen, the rubber baffle being fixedly mounted on the top of the support plate, the two ends of the airbag being fixedly connected to the support plate and the metal sheet respectively, the inner wall of the airbag being rotatably connected to the first baffle, and the inner wall of the airbag being fixedly mounted below the first baffle on an external clamping block.

5. The frequency conversion cabinet for chemical electrical equipment according to claim 4, characterized in that: A card plate (61) is clamped on the top inner wall of the raised bin, a storage groove (62) is formed between the raised bins of the card plate, a rubber baffle is fixedly installed on the top of the support plate, the rubber baffle and the storage groove form a closed space, the obstruction block is fixedly installed on the inner wall of the card plate, and a brush (64) is fixedly installed on the top of the support plate 63.

6. The frequency conversion cabinet for chemical electrical equipment according to claim 5, characterized in that: A dust collecting chamber (69) is provided inside the support plate, a second baffle (68) is rotatably connected to the connection between the airbag and the support plate, and an inner clamping block is fixedly installed between the airbag and the second baffle.

7. The frequency conversion cabinet for chemical electrical equipment according to claim 6, characterized in that: It also includes a force-enhancing component (7), the force-enhancing component (7) includes a force-storage spring (71), a connecting plate (73), a contact block (74) and a spring sheet (75), the metal sheet is elastically connected to the force-storage spring on one side facing the center of the cushioning bin, the end of the force-storage spring is fixedly mounted with a connecting plate, the side of the connecting plate away from the force-storage spring is fixedly connected to the airbag, the end of the connecting plate is fixedly mounted with a contact block, the inner wall of the cushioning bin is fixedly mounted with a spring sheet symmetrically arranged front and back, and the spring sheet is located on the moving path of the contact block.

8. The frequency conversion cabinet for chemical electrical equipment according to claim 7, characterized in that: The contact block adopts a ladder block structure, the front and rear sides of the airbag are offset from the spring sheet, a telescopic rod (72) is passed through the center of the force storage spring, the left and right ends of the force storage spring are respectively fixedly connected to the metal sheet and the connecting plate, and an air suction port (3) is opened on the side of the cushioning bin.

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