CN115296173B

CN115296173B - Low-voltage switch cabinet system for power distribution center

Info

Publication number: CN115296173B
Application number: CN202211194443.XA
Authority: CN
Inventors: 符君; 李彬; 杨诚; 王瑞; 陶敏杰
Original assignee: Suwen Electric Energy Technology Co ltd
Current assignee: Suwen Electric Energy Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-27
Anticipated expiration: 2042-09-29
Also published as: CN115296173A

Abstract

The invention belongs to the technical field of power distribution, and particularly discloses a low-voltage switch cabinet system for a power distribution center. This low-voltage switchgear system includes the low-voltage cabinet body, the rear side of the low-voltage cabinet body is opened and is equipped with the opening, open-ended inside rear side is opened and is equipped with and runs through the mouth, run through the inside that runs through to the low-voltage cabinet body, open-ended rear side inner wall is close to two corners and has all been seted up the spacing groove, the equal sliding connection in inside of two spacing grooves has the stopper, be fixed with the fly leaf between two stoppers, the mounting groove has been seted up to the middle part of fly leaf, the inner wall of mounting groove is fixed with a plurality of branches along the circumferencial direction equidistance, be fixed with the motor between the one end of a plurality of branches, the output of motor is fixed with a plurality of fan blades along the circumferencial direction equidistance. The invention can conveniently move the heat dissipation facility to carry out centralized heat dissipation on the transformer with larger power and is convenient for removing dust regularly.

Description

Low-voltage switch cabinet system for power distribution center

Technical Field

The invention relates to the technical field of power distribution, in particular to a low-voltage switch cabinet system for a power distribution center.

Background

Distribution box divides power distribution box and lighting distribution box, is distribution system's final equipment. The distribution box is a low-voltage distribution device formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement. In normal operation, the circuit can be switched on or off by means of a manual or automatic switch. When the fault or abnormal operation occurs, the circuit is cut off or an alarm is given by the aid of the protective electric appliance. The measuring instrument can display various parameters in operation, and can also adjust some electrical parameters to prompt or send out signals for deviation from normal working state. It is commonly used in various power generation, distribution and transformation substations.

At present when the power distribution box is used at a transformer substation, the transformer generally needs to be butted, but different transformers can be adjusted according to the magnitude of the current amount of an output circuit, so different transformer powers are different, the heat dissipation modules of the existing distribution box are generally fixedly installed during assembly, but the transformer with larger power needs to be installed according to specific use conditions, and the transformer with larger power cannot be subjected to concentrated heat dissipation.

Disclosure of Invention

The present invention aims to provide a low-voltage switchgear system for a power distribution center, which solves at least one of the above technical problems.

In order to achieve the purpose, the invention adopts the following technical scheme: a low-voltage switch cabinet system for a power distribution center comprises a low-voltage cabinet body, wherein an opening is formed in the rear side of the low-voltage cabinet body, a through hole is formed in the rear side of the interior of the opening, the through hole penetrates into the interior of the low-voltage cabinet body, limiting grooves are formed in the inner wall of the rear side of the opening, close to two corners, the interior of each limiting groove is connected with a limiting block in a sliding mode, and a movable plate is fixed between the two limiting blocks; the mounting groove has been seted up to the middle part of fly leaf, the inner wall of mounting groove is fixed with a plurality of branches along the circumferencial direction equidistance, and is a plurality of be fixed with the motor between the one end of branch, the output of motor is fixed with a plurality of fan blades along the circumferencial direction equidistance, and is a plurality of the fan blade all is located the inside of mounting groove, the both sides edge of fly leaf all sets up flutedly, two all be fixed with the dead lever between the both sides inner wall of recess, the both sides edge that the fly leaf deviates from opening one side all is fixed with the fixed block, two the top of fixed block is close to a side edge and all is fixed with the elasticity cardboard, the front side of fly leaf is close to both sides edge and all is fixed with the supporting shoe, two one side of supporting shoe all is fixed with the spring, two the supporting shoe all corresponds the top that is located two fixed blocks.

Preferably, the front side of fly leaf is close to both sides edge and all rotates and is connected with the shifting block that removes dust, two the one end of spring all corresponds and fixes in one side of two shifting blocks that remove dust, two the front side of shifting block that removes dust all is fixed with the fixed column near bottom edge.

Preferably, two one side of elasticity cardboard is close to the surface that bottom edge correspondence and two fixed columns laminated mutually, two one side of dust removal shifting block is close to bottom edge and all is fixed with two spacing teeth.

Preferably, the inside rear side of the low-voltage cabinet body is close to both sides edge and all is fixed with the mounting panel, two be provided with the installation frame between the front side of mounting panel, the both sides inner wall that runs through the mouth all is fixed with collection dirt rack, two one side of collection dirt rack is close to top edge and all is fixed with fender position tooth piece, and the transverse dimension who keeps off position tooth piece is greater than the transverse dimension of collection dirt rack.

Preferably, two one side of keeping off the position tooth piece all corresponds one side that extends to two collection dirt racks, the inside bottom surface that runs through the mouth is close to both sides edge and all is fixed with L shape dog, the pull groove has all been seted up to open-ended both sides inner wall.

Preferably, the rear side of the low-pressure cabinet body is provided with a guide groove, the drawing groove penetrates through the guide groove, and filter cloth is arranged in the drawing groove.

Preferably, the front side of the low-voltage cabinet body is close to top edge and rotates and is connected with the access door, the front side of access door is provided with the knob, one side inner wall of the low-voltage cabinet body is close to front edge and rotates and is connected with the emergency exit.

Preferably, a handle groove is formed in the edge, close to one side, of the front side of the safety door, and rubber bottom plates are fixed to the bottom of the low-voltage cabinet body, close to four corners.

Preferably, each dust collecting tooth portion of the dust collecting rack is provided with a lower inclined surface and an upper inclined surface which are arranged oppositely, an acute angle is formed between the lower inclined surface and the upper inclined surface, the lower inclined surface of each dust collecting tooth portion is located below the upper inclined surface, the included angle of the lower inclined surface relative to the horizontal direction is larger than the included angle of the upper inclined surface relative to the horizontal direction, a tooth socket is formed between every two adjacent dust collecting tooth portions, two limiting teeth on each dust removing shifting block are an upper tooth portion and a lower tooth portion located below the upper tooth portion respectively, a fixing column is fixed at the root of the lower tooth portion, an included angle is formed between the upper surface of the upper tooth portion and the upper surface of the lower tooth portion, the upper surface of the lower tooth portion is a flexible surface, a plurality of collecting holes are concavely formed in the flexible surface, an elastic bulging portion is arranged in the flexible surface, the elastic bulging portion can support the flexible bulging portion upwards, and a coarse dust scraping surface is formed on the lower surface of the lower tooth portion and used for scraping dust on the upper inclined surface of the dust collecting tooth portion.

Preferably, be provided with DC power supply in the fly leaf, be provided with miniature fan in the fixed block, be provided with on the L shape dog with DC power supply electric connection's contact head, the elastic clamping plate is made for metal material, be provided with the wind channel that extends to in the fixed block in it, the wind channel extends to the trip department of elastic clamping plate and forms the impact outlet, strike the export towards the flexible face of tooth portion down, the one end upper portion that the fixed block was kept away from to the elastic clamping plate is formed with the export of raising upward, the export of raising upward deviates from L shape dog and communicates with the wind channel, miniature fan and DC power supply electric connection are passed through to the one end of elastic clamping plate.

Compared with the prior art, the invention has the beneficial effects that:

1. when the movable plate is pushed upwards, the dust removal shifting block is biased towards one side of the dust collection rack under the elastic pressure of the spring, so that the limiting teeth can be always elastically attached to one side of the dust collection rack, and when the movable plate is stopped to be pushed upwards, the movable plate can be limited under the mutual clamping of the limiting teeth and the dust collection rack;

2. when promoting the fly leaf to the top of collection dirt rack, because outside one side of keeping off a position tooth piece extended to one side of collection dirt rack, so can promote the sideslip with spacing tooth, its sideslip distance is farther than the sideslip distance that collection dirt rack can promote to can be with the fixed column block on the trip of elasticity cardboard, make and fix the restraint to the shifting block that removes dust. When the limiting teeth only move on the dust collecting rack, the dust collecting rack cannot jack the fixed column into the clamping hook of the elastic clamping plate, so that the dust removing shifting block cannot be limited, and the dust removing shifting block is always in a movable state;

3. after carrying out spacing fixed with the shifting block that removes dust, when needs unblock, only need promote the fly leaf to end downwards, can upwards promote the elasticity cardboard under the support of L shape dog, thereby make the upwards jacking of trip of elasticity cardboard, make the trip alternate segregation of fixed column and elasticity cardboard, thereby reach the purpose of unblock, need install the filter cloth in the inside of drawing groove when in-service use, can filter the air of blowing in the internal portion of low-voltage cabinet, prevent that the dust from polluting the electric appliance of the internal portion of low-voltage cabinet.

Drawings

FIG. 1 is a front perspective view of a low voltage switchgear system for a power distribution center of the present invention;

FIG. 2 is a side perspective view of a low voltage switchgear system for a power distribution center of the present invention;

FIG. 3 is a rear perspective view of a low voltage switchgear system for a power distribution center of the present invention;

FIG. 4 is a side cutaway perspective view of a low voltage switchgear system for a power distribution center of the present invention;

FIG. 5 is another side perspective view, in cross-section, of a low voltage switchgear system for a power distribution center of the present invention;

fig. 6 is a partially enlarged view of a portion a of fig. 4 according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a low-voltage switchgear system for power distribution center, including the low-voltage cabinet body 1, opening 11 has been opened to the rear side of the low-voltage cabinet body 1, opening 11's inside rear side has been opened and is equipped with through-hole 20, through-hole 20 runs through to the inside of the low-voltage cabinet body 1, opening 11's rear side inner wall is close to two corners and has all seted up spacing groove 21, the equal sliding connection in inside of two spacing groove 21 has stopper 22, be fixed with fly leaf 12 between two stopper 22, mounting groove 15 has been seted up to the middle part of fly leaf 12, the inner wall of mounting groove 15 is fixed with a plurality of branches 17 along the circumferencial direction equidistance, be fixed with motor 16 between the one end of a plurality of branches 17, motor 16's output is fixed with a plurality of fan blades 19 along the circumferencial direction equidistance, a plurality of fan blades 19 all are located the inside of mounting groove 15, recess 13 has all been seted up to the both sides edge of fly leaf 12, all be fixed rod 14 between the both sides inner wall of two recesses 13, fly leaf 12 deviates from both sides edge of opening one side all is fixed with fixed block 30, the top of two fixed blocks 30, the top is close to one side edge of two fixed block 29, one side edges of two fixed block 31 that the support block 31 all is located two fixed block 31, there is corresponding fixed block 31, two fixed block 30.

When the transformer cabinet is used, firstly, an external transformer is installed on the installation frame 8, then the installation frame 8 is installed on the two installation plates 7 in the low-voltage cabinet body 1, then the movable plate 12 is slidably connected in the opening 11 through the limiting groove 21 and the limiting block 22, when the movable plate 12 needs to be adjusted to the rear side of the transformer with larger power, the movable plate 12 only needs to be pushed upwards through the fixing rod 14, in the process that the movable plate 12 is pushed upwards, the dust removal shifting block 26 is biased towards one side of the dust collection rack 24 under the elastic pressure of the spring 32, so that the limiting teeth 27 can be always elastically attached to one side of the dust collection rack 24, and when the movable plate 12 stops being pushed upwards, the movable plate 12 can be limited under the mutual clamping of the limiting teeth 27 and the dust collection rack 24.

As shown in fig. 2-6, the front side of the movable plate 12 is close to the edges of the two sides and is connected with the dust-removing shifting block 26 in a rotating manner, one end of each of the two springs 32 is fixed on one side of each of the two dust-removing shifting blocks 26, the front sides of the two dust-removing shifting blocks 26 are fixed with the fixing columns 28 on the edges of the bottoms, one side of each of the two elastic clamping plates 29 is close to the edges of the bottoms and is attached to the outer surfaces of the two fixing columns 28, two limit teeth 27 are fixed on the edges of the bottoms on one side of the two dust-removing shifting blocks 26, the mounting plate 7 is fixed on the edges of the two sides of the inside rear side of the low-voltage cabinet 1, the mounting frame 8 is arranged between the front sides of the two mounting plates 7, the inner walls of the two sides of the through opening 20 are fixed with the dust-collecting racks 24, the gear blocks 25 are fixed on the edges of the tops of the two dust-collecting racks 24, and the transverse dimension of the gear blocks 25 is greater than the transverse dimension of the dust-collecting racks 24.

The effect that it reached is, when promoting fly leaf 12 to the top of collection dirt rack 24, because keep off the outside of one side of position tooth piece 25 extension to collection dirt rack 24, so can promote spacing tooth 27 to one side lateral shifting, its lateral shifting distance is farther than the lateral shifting distance that collection dirt rack 24 can promote, thereby can block fixed column 28 on the trip of elastic clamping plate 29, make and fix the restraint to removal dust shifting block 26, when spacing tooth 27 only moved on collection dirt rack 24, collection dirt rack 24 can not push up fixed column 28 into the trip of elastic clamping plate 29, thereby can not carry out spacing with removal dust shifting block 26, removal dust shifting block 26 is in active condition all the time. For example, the hook of the elastic catch plate 29 may be in a barb shape, so that the fixing post 28 is not easily detached.

As shown in fig. 2-6, one side of two keep off position tooth piece 25 all corresponds and extends to one side of two collection dirt racks 24, the inside bottom surface that runs through mouth 20 is close to both sides edge and all is fixed with L shape dog 18, drawing groove 23 has all been seted up to the both sides inner wall of opening 11, guide way 10 has been seted up to the rear side of the low-voltage cabinet body 1, drawing groove 23 runs through to the inside of guide way 10, the inside of drawing groove 23 is provided with filter cloth 5, the front side of the low-voltage cabinet body 1 is close to top edge and rotates and is connected with access door 2, the front side of access door 2 is provided with knob 6, one side inner wall of the low-voltage cabinet body 1 is close to front side edge and rotates and is connected with emergency exit 3, handle groove 4 has been seted up near one side edge to emergency exit 3's front side edge, the bottom of the low-voltage cabinet body 1 is close to four corners and all is fixed with rubber bottom plate 9.

Its effect that reaches does, carry out spacing fixed back with dust removal shifting block 26, when needs unblock, only need promote fly leaf 12 on the earth downwards, can upwards promote elasticity cardboard 29 under the support of L shape dog 18, thereby make the trip of elasticity cardboard 29 upwards the jacking, make fixed column 28 and the trip alternate segregation of elasticity cardboard 29, thereby reach the purpose of unblock, need install filter cloth 5 in the inside of drawing groove 23 when in-service use, can filter the air of blowing in the inside of the low-voltage cabinet body 1, prevent that the dust from polluting the inside electrical apparatus of the low-voltage cabinet body 1.

The use method and the working principle of the device are as follows: when the transformer cabinet is used, firstly, an external transformer is installed on the installation frame 8, then, the installation frame 8 is installed on the two installation plates 7 inside the low-voltage cabinet body 1, then, the movable plate 12 is slidably connected inside the opening 11 through the limiting groove 21 and the limiting block 22, when the movable plate 12 needs to be adjusted to the rear side of the transformer with larger power, the movable plate 12 only needs to be pushed upwards through the fixing rod 14, in the process that the movable plate 12 is pushed upwards, the dust removal shifting block 26 is biased towards one side of the dust collection rack 24 under the elastic pressure of the spring 32, so that the limiting teeth 27 can be elastically attached to one side of the dust collection rack 24 all the time, and when the movable plate 12 stops being pushed upwards, the movable plate 12 can be clamped and limited under the mutual clamping of the limiting teeth 27 and the dust collection rack 24.

After the movable plate 12 is pushed to the upper side of the dust collection rack 24, the gear tooth block 25 extends out of one side of the dust collection rack 24, so that the gear tooth block 25 can push the limiting teeth 27 to one side to move transversely for a first distance, the first distance is larger than a second distance which can push the limiting teeth 27 to move transversely by the dust collection rack 24, and the fixed column 28 can be clamped on the clamping hook of the elastic clamping plate 29, and the dust removal shifting block 26 is fixedly restrained by the clamping hook. When the limiting teeth 27 only move on the dust collection rack 24, the fixed column 28 cannot be pushed into the hook of the elastic clamping plate 29 by the dust collection rack 24, so that the dust removal shifting block 26 cannot be limited, and the dust removal shifting block 26 is always in an active state. At the highest point, carry out spacing fixed back with dust removal shifting block 26, when needs the unblock, only need promote fly leaf 12 to end downwards (this moment because spacing tooth 27 is kept away from collection dirt rack 24, can not lead to the fact the hindrance to spacing tooth 27), can upwards promote elasticity cardboard 29 under the blockking of L shape dog 18, thereby make the trip of elasticity cardboard 29 upwards jacking, make fixed column 28 and elasticity cardboard 29's trip alternate segregation, thereby reach the purpose of unblock, need install filter cloth 5 in the inside of pull-out groove 23 when in-service use, can filter the air of blowing in the inside of the low-voltage cabinet body 1, prevent that the dust from polluting the inside electrical apparatus of the low-voltage cabinet body 1.

For example, it is particularly important to accumulate floating dusts in the low-pressure cabinet 1 by using the dust collecting teeth 245 and the tooth grooves 248 on the dust collecting rack 24, to prevent dusts from floating everywhere and being not cleaned, and to realize uniform cleaning. For example, after long-term use, a lot of dust can be accumulated on the dust collection rack 24 and the movable plate 12, especially around the fan blade 19, in order to clean up the accumulated dust on the movable plate 12, each dust collection tooth 245 of the dust collection rack 24 is formed with a lower inclined surface 2453 and an upper inclined surface 2454 which are oppositely arranged, an acute angle is formed between the lower inclined surface 2453 and the upper inclined surface 2454, the lower inclined surface 2453 of each dust collection tooth 245 is positioned below the upper inclined surface 2454, the included angle of the lower inclined surface 2453 relative to the horizontal direction is greater than the included angle of the upper inclined surface 2454 relative to the horizontal direction, and a tooth socket 248 is formed between two adjacent dust collection tooth 245. The two limit teeth 27 on each dust removing shifting block 26 are an upper tooth portion 271 and a lower tooth portion 273 located below the upper tooth portion 271, wherein the fixed column 28 is fixed at the root of the lower tooth portion 273. An angle is formed between the upper surface of the upper tooth 271 and the upper surface of the lower tooth 273. The upper surface of the lower tooth portion 273 is a flexible surface 2735, a plurality of harvesting holes are concavely formed in the flexible surface 2735, and an elastic bulging portion (not shown) is arranged in the flexible surface 2735 and can abut against the flexible surface 2735 to bulge upwards. A dust-scraping uneven surface 2738 for scraping off dust on the upper inclined surfaces 2454 of the dust-collecting teeth 245 is formed on the lower surface of the lower teeth 273.

For example, to facilitate dust collection, the dust collection rack 24 can be connected to a power source to effect electrostatic dust collection. When the movable plate 12 needs to be moved, the power supply connected to the dust collection rack 24 needs to be disconnected. Of course, the dust collecting rack 24 can also absorb and accumulate dust by using its own dust collecting tooth portion 245 and tooth groove 248 structure, and can be realized by providing various absorption layers on the surface of the dust collecting rack 24, and finally, the effect of centralized removal can be realized.

When the dust removing shifting block 26 moves upwards, when the upper tooth part 271 passes over the corresponding dust collecting tooth part 245 and is meshed with the previous dust collecting tooth part 245, the end edge of the upper tooth part 271 can be vibrated and reset and is abutted against the lower inclined surface 2453 of the previous dust collecting tooth part 245, so that the line contact with the lower inclined surface 2453 is kept, the flexible surface 2735 of the lower tooth part 273 can be in surface contact with the first surface of the dust collecting tooth part 245 passed by the upper tooth part 271, so that the surface contact is realized, and the lower surface of the lower tooth part 273 is used for abutting against the upper inclined surface 2454 on the lower side of the corresponding tooth groove 248, so that dust is scraped. In the process of moving upwards, the end of the upper tooth 271 can scrape the lower inclined plane 2453 of the dust collecting tooth 245 by using the larger pressure caused by line contact, so that the dust on the lower inclined plane 2453 is loosened and even falls off, and at the same time, the flexible plane 2735 of the lower tooth 273 can continuously make surface contact (at least partial surface contact) with the lower inclined plane 2453 of the dust collecting tooth 245, so that the loosened dust on the lower inclined plane 2453 is wiped, so that the dust is concentrated in the collecting hole on the flexible plane 2735, and after passing over one dust collecting tooth 245 each time, the dust can oscillate under the action of the spring 32 to shake off the dust, so that the concentrated removal of the dust on the dust collecting rack 24 is realized.

For example, a direct current power supply is arranged in the movable plate 12, a micro fan is arranged in the fixed block 30, a contact electrically connected with the direct current power supply is arranged on the L-shaped stopper 18, the elastic clamping plate 29 is made of a metal material, an air duct (not shown) extending into the fixed block 30 is arranged in the elastic clamping plate, the air duct extends to a hook of the elastic clamping plate 29 and forms an impact outlet, the impact outlet faces the flexible surface 2735 of the lower tooth portion 273, an upward outlet is formed in the upper portion of one end, far away from the fixed block 30, of the elastic clamping plate 29, and the upward outlet deviates from the L-shaped stopper 18 and is communicated with the air duct. One end of the elastic clamping plate 29 is electrically connected with the direct current power supply through the micro fan.

When the L-shaped stopper 18 abuts against the elastic catch plate 29 to separate from the dust removing dial 26, the elastic catch plate 29 is electrically connected to the contact in the L-shaped stopper 18, so as to form an electrical circuit to connect the micro fan, and the micro fan is started. For example, the micro fan may be a small-sized fan. Thereafter, when the elastic clamping plate 29 is pressed by the L-shaped stopper 18 to be flexibly deformed and tilted upward, the impact outlet is located above the flexible surface 2735 of the lower tooth 273, so as to guide the blown airflow of the micro fan to impact and blow out, and the dust collected/collected in the hole collected on the flexible surface 2735 is blown down to the bottom plate of the low-pressure cabinet 1, and in the continuous tilting process, the elastic clamping plate 29 drives the raising outlet to gradually rotate, so as to gradually blow down the dust on the movable plate 12, the fan blade 19 and the periphery thereof from different angles, because the wind blown out by the fan blade 19 itself is blown into the low-pressure cabinet 1, the dust on the periphery of the fan blade 19 and the hole where the fan blade is installed is not easily blown down by the fan blade 19.

When the elastic clamping plate 29 is separated from the fixed column 28, the dust removing shifting block 26 elastically returns to further shake off the dust on the flexible surface 2735, and then when the movable plate 12 is lifted, the elastic clamping plate 29 is separated from the contact point on the L-shaped stop 18, so that the power failure is realized.

For example, the dc power supply is a low voltage power supply, and may be 36V, 24V, or the like. Therefore, the movable plate 12 can be moved up and down during each installation process or at intervals, so as to realize the dust removal operation on the dust collection rack 24 and the movable plate 12, and avoid the problem of difficult heat dissipation caused by dust accumulation due to non-cleaning after long-term use.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.

Claims

1. The low-voltage switch cabinet system for the power distribution center is characterized by comprising a low-voltage cabinet body (1), wherein an opening (11) is formed in the rear side of the low-voltage cabinet body (1), a through hole (20) is formed in the rear side of the interior of the opening (11), the through hole (20) penetrates into the interior of the low-voltage cabinet body (1), limiting grooves (21) are formed in the inner wall of the rear side of the opening (11) close to two corners, limiting blocks (22) are connected to the interior of the two limiting grooves (21) in a sliding mode, and a movable plate (12) is fixed between the two limiting blocks (22); the middle part of the movable plate (12) is provided with a mounting groove (15), the inner wall of the mounting groove (15) is fixedly provided with a plurality of support rods (17) at equal intervals along the circumferential direction, a motor (16) is fixed between one ends of the support rods (17), the output end of the motor (16) is fixedly provided with a plurality of fan blades (19) at equal intervals along the circumferential direction, the fan blades (19) are all positioned inside the mounting groove (15), the edges of the two sides of the movable plate (12) are respectively provided with a groove (13), a fixing rod (14) is fixed between the inner walls of the two sides of each groove (13), the edges of the two sides of the movable plate (12) at the side departing from the opening (11) are respectively fixedly provided with a fixing block (30), the top parts of the two fixing blocks (30) close to one side edge are respectively fixedly provided with an elastic clamping plate (29), the support blocks (31) are respectively fixed at the front side of the movable plate (12) close to the edges of the two sides, one side of the two support blocks (31) are respectively fixedly provided with a spring (32), and the two support blocks (31) are respectively positioned at the top parts of the two fixing blocks (30);

the front side of the movable plate (12) is connected with the dust removal shifting blocks (26) near the edges of the two sides in a rotating mode, one ends of the two springs (32) are fixed on one side of the two dust removal shifting blocks (26) correspondingly, the front sides of the two dust removal shifting blocks (26) are fixed with fixed columns (28) near the edges of the bottom, one sides of the two elastic clamping plates (29) are attached to the outer surfaces of the two fixed columns (28) near the edges of the bottom, two limit teeth (27) are fixed on one side of each dust removal shifting block (26) near the edges of the bottom, mounting plates (7) are fixed on the inner rear side of the low-pressure cabinet body (1) near the edges of the two sides, a mounting frame (8) is arranged between the front sides of the two mounting plates (7), dust collection racks (24) are fixed on the inner walls of the two sides of the through hole (20), gear blocks (25) are fixed on one side of the two dust collection racks (24) near the edges of the top, the transverse dimension of the gear blocks (25) is larger than that of the dust collection racks (24), the inner walls (245) of the two dust collection grooves (18) which are formed on the inner side of the dust collection grooves (245) which are formed by the dust collection grooves (245), an acute angle is formed between the lower inclined plane (2453) and the upper inclined plane (2454), the lower inclined plane (2453) of each dust collecting tooth part (245) is positioned below the upper inclined plane (2454), the included angle of the lower inclined plane (2453) relative to the horizontal direction is larger than the included angle of the upper inclined plane (2454) relative to the horizontal direction, a tooth socket (248) is formed between every two adjacent dust collecting tooth parts (245), two limit teeth (27) on each dust removing shifting block (26) are respectively an upper tooth part (271) and a lower tooth part (273) positioned below the upper tooth part (271), wherein a fixed column (28) is fixed at the root of the lower tooth part (273), an included angle is formed between the upper surface of the upper tooth part (271) and the upper surface of the lower tooth part (273), the upper surface of the lower tooth part (273) is a flexible surface (2735), a plurality of collecting holes are concavely arranged on the flexible surface (2735), an elastic expansion part is arranged in the elastic expansion part, the elastic expansion part can support the flexible surface (2735) to upwards expand the flexible surface (2735), a direct current power supply (2718) is arranged in the movable plate (245), a direct current fan, a direct current collecting head (30) for connecting with the dust collecting straight dust collecting baffle (18) is arranged in the movable plate (30), the wind channel extends to the trip department of elasticity cardboard (29) and forms and assaults the export, assaults flexible face (2735) of export orientation lower tooth portion (273), and the one end upper portion that fixed block (30) were kept away from in elasticity cardboard (29) is formed with the export of raising one's head, and the export of raising one's head deviates from L shape dog (18) and communicates with the wind channel, and miniature fan and DC power supply electric connection are passed through to the one end of elasticity cardboard (29).

2. A low-voltage switchgear system for a power distribution center according to claim 1, characterized in that: the rear side of the low-voltage cabinet body (1) is provided with a guide groove (10), a drawing groove (23) penetrates into the guide groove (10), and filter cloth (5) is arranged in the drawing groove (23).

3. A low-voltage switchgear system for a power distribution center according to claim 2, characterized in that: the front side of the low-voltage cabinet body (1) is close to the top edge and is rotatably connected with an access door (2), the front side of the access door (2) is provided with a knob (6), and the inner wall of one side of the low-voltage cabinet body (1) is close to the front side edge and is rotatably connected with a safety door (3).

4. A low-voltage switchgear system for a power distribution center according to claim 3, characterized in that: the front side of the safety door (3) is close to one side edge and is provided with a handle groove (4), and the bottom of the low-voltage cabinet body (1) is close to four corners and is fixed with a rubber bottom plate (9).