CN114421303A

CN114421303A - Low-voltage distribution cabinet with inside edulcoration prevents harmful structure

Info

Publication number: CN114421303A
Application number: CN202111581453.4A
Authority: CN
Inventors: 蒋荣
Original assignee: Wuhan Century Xingpeng Electric Co ltd
Current assignee: Wuhan Century Xingpeng Electric Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-29
Anticipated expiration: 2041-12-22
Also published as: CN114421303B

Abstract

The invention discloses a low-voltage power distribution cabinet with an internal impurity removal and damage prevention structure, which comprises a cabinet body, wherein lifting mechanisms are arranged on two sides in the cabinet body, impurity removal mechanisms are jointly arranged between the lifting mechanisms, the impurity removal mechanisms are connected with a collecting mechanism, filtering mechanisms are arranged in the side walls of the lower ends of two sides of the cabinet body, and the filtering mechanisms are connected with the lifting mechanisms on the same side, and the low-voltage power distribution cabinet with the internal impurity removal and damage prevention structure has the following beneficial effects that: the impurity removing mechanism is arranged in the cabinet body and is arranged in the cabinet body through the two lifting mechanisms, when the impurity removing mechanism is used, the two lifting mechanisms are used for driving the impurity removing mechanism to move at the upper end and the lower end in the cabinet body, meanwhile, an air blower of the impurity removing mechanism blows air to electronic elements inside through the air outlet pipe, impurities such as dust attached to the electronic elements are lifted, and then the lifted impurities are sucked into the connected collecting mechanism through the air suction fan, so that the impurities can be prevented from damaging the electronic elements in the cabinet body, and the purposes of removing impurities and preventing harm are achieved.

Description

Low-voltage distribution cabinet with inside edulcoration prevents harmful structure

Technical Field

The invention relates to a low-voltage power distribution cabinet, in particular to a low-voltage power distribution cabinet with an internal impurity removal and harm prevention structure, and belongs to the technical field of low-voltage power distribution cabinets.

Background

The power distribution system with rated current of 50Hz and rated voltage of 380V is used for power, illumination and power distribution electric energy conversion and control, and is one of power distribution cabinets, and low-voltage power distribution cabinets are installed in many places.

At present used low-voltage distribution cabinet when using, even the louvre outside has set up filtration, the impurity of part dust and the like in the air still can pass the louvre and get into in the cabinet body, and fall on the electronic component in the cabinet body, when the impurity of dust and the like is too much on the electronic component, can cause the damage to electronic component, and the impurity of the dust and the like that filter down on the filtration is too much, can cause the filtration jam, influence the internal and external air flow speed of cabinet, reduce the internal radiating rate of cabinet, staff need artifically tear down filtration when the clearance simultaneously, the clearance process is comparatively troublesome.

Disclosure of Invention

The invention provides a low-voltage power distribution cabinet with an internal impurity removal and harm prevention structure, which effectively solves the problems in the prior art.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a low-voltage power distribution cabinet with an internal impurity removal and harm prevention structure, which comprises a cabinet body, wherein lifting mechanisms are arranged on two sides in the cabinet body, an impurity removal mechanism is jointly arranged between the lifting mechanisms, the impurity removal mechanism is connected with a collecting mechanism, filtering mechanisms are arranged in the side walls of the lower ends of two sides of the cabinet body, the filtering mechanisms are connected with the lifting mechanisms on the same side, cabinet doors are hinged on two sides of the front side of the cabinet body, a dust screen is fixedly connected in the side wall of the lower end of the back of the cabinet body, a blocking mechanism is arranged on the outer wall of the back of part of the cabinet body outside the dust screen, a motor is fixedly connected on the outer wall of the middle part of the upper end of the cabinet body, the output end of the motor faces downwards, a driving shaft is fixedly connected on the output end of the motor, the driving shaft penetrates through and is slidably connected on the side wall of the upper end of the cabinet body, and the lower end of the driving shaft is fixedly connected with a driving gear, the driving gear is connected with the two lifting mechanisms.

As a preferred technical scheme, the lifting mechanisms comprise lifting screws, the lifting screws are vertically and rotatably connected inside the cabinet body, fixed gear rings are sleeved and fixedly connected on the circumferential outer wall of the upper end of each lifting screw, the fixed gear rings are meshed and connected with the driving gear, conical gear rings are sleeved and fixedly connected on the circumferential outer wall of the lower end of each lifting screw, threaded plates are sleeved and connected with the circumferential outer wall of the middle of each lifting screw in a threaded manner, and the threaded plates are abutted against the inner walls of the side faces of the cabinet body on the same side.

According to a preferable technical scheme, the impurity removing mechanism comprises a shell, the outer walls of two sides of the shell are fixedly connected with one side, close to a threaded plate of the lifting mechanism on the same side, of the shell, an air blower is fixedly connected to the side wall of the middle of the upper end of the shell, a plurality of air outlet pipes are fixedly connected to the side wall of the back of the shell at equal intervals, a fixed shell is fixedly connected to the outer wall of the front of the shell, a suction fan is fixedly connected to the side wall of the front of the fixed shell, ventilating pipes are fixedly connected to the side walls of four corners of the back of the fixed shell, and a suction nozzle is fixedly connected to one end, far away from the fixed shell, of each ventilating pipe.

As a preferred technical scheme, the collecting mechanism comprises a barrel, the barrel is fixedly connected to the outer wall of the lower end of a shell of the impurity removing mechanism, a bottom cover is sleeved on the outer wall of the circumference of the lower end of the barrel and fixedly connected with the outer wall of the lower end of the barrel in a threaded manner, the side wall of the middle of the lower end of the bottom cover is in a penetrating state, a support frame is fixedly connected to the middle of the lower end of the bottom cover, an insertion rod is fixedly connected to the middle of the upper end of the support frame, a plurality of filter rings are sleeved on the outer wall of the circumference of the insertion rod and fixedly connected with the insertion rod, the filter rings are all connected to the interior of the barrel in a sliding manner, a connecting pipe is fixedly connected to the side wall of the upper end of the front of the barrel, and one end, far away from the barrel, of the connecting pipe is fixedly connected to a suction fan of the impurity removing mechanism.

As a preferred technical scheme of the invention, the inserted bar and the cylinder are positioned on the same central line, and the upper ends of the inserted bars are inserted into the inner wall of the upper end of the cylinder.

As a preferable technical scheme of the invention, a plurality of friction plates are fixedly connected to the circumferential outer wall of the bottom cover, and the distances between every two adjacent friction plates are the same.

As a preferred technical scheme of the invention, the filtering mechanisms all comprise mounting shells, the mounting shells are all fixedly connected in the side wall of the cabinet body, the middle parts of the mounting shells are all fixedly connected with mesh plates, the middle parts of the mesh plates are all penetrated and fixedly connected with fixing sleeves, the outer circumferential walls of one ends, far away from the mesh plates, of the fixing sleeves are all sleeved with and connected with filter screens, the outer sides of the filter screens are all fixedly connected on the inner walls of the mounting shells on the same side, the insides of the fixing sleeves are all penetrated and fixedly connected with rotating shafts through bearings, one ends, near the insides of the cabinet bodies, of the rotating shafts are all fixedly connected with bevel gears, the bevel gears are all meshed with bevel gear rings of lifting mechanisms on the same side, a plurality of fan blades are all fixedly connected on the outer circumferential walls of part of the rotating shafts between the bevel gears and the fixing sleeves on the same side, and two rotating plates are all symmetrically and fixedly connected on the outer circumferential walls of one ends, far away from the insides of the cabinet bodies, of the rotating shafts, the rotating plate is fixedly connected with a brush on one side close to the fixing sleeve on the same side, and the brushes are connected to the filter screen on the same side in a sliding mode.

According to a preferable technical scheme of the invention, the blocking mechanisms respectively comprise outer frames, the outer frames are U-shaped structures, the openings of the outer frames are upward, the outer frames are fixedly connected to the outer walls of the back surfaces of partial cabinets outside the dust screen, sealing plates are inserted into the outer frames, and the upper ends of the sealing plates are fixedly connected with pressure plates.

The invention has the following beneficial effects:

1. the impurity removing mechanism is arranged in the cabinet body and is installed in the cabinet body through the two lifting mechanisms, when the impurity removing mechanism is used, the two lifting mechanisms are used for driving the impurity removing mechanism to move up and down in the cabinet body, meanwhile, an air blower of the impurity removing mechanism blows air to electronic elements inside through the air outlet pipe, impurities such as dust attached to the electronic elements are lifted, then the lifted impurities are sucked into the connected collecting mechanism through the suction fan, the impurities can be prevented from damaging the electronic elements in the cabinet body, and the purposes of impurity removing and harm preventing are achieved.

2. The two sides of the cabinet body are respectively provided with the filtering mechanism, the filtering mechanisms are connected with the lifting mechanism at the same side, when the cabinet is used, air inside and outside the cabinet body circulates through the mounting shell of the filtering mechanism, the filter screen in the mounting shell can filter most impurities in the air, the lifting mechanism can drive the rotating shaft of the filtering mechanism to rotate while driving the impurity removing mechanism to move, the brush slides outside the filter screen, meanwhile, air is blown to the filter screen through the fan blades, the impurities on the filter screen are removed, manual cleaning is not needed, and the cleaning process is convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a cutaway structure of the present invention;

FIG. 2 is an enlarged view of the area A in FIG. 1;

FIG. 3 is a front external view of the present invention;

FIG. 4 is a schematic view of the backside structure of the present invention;

FIG. 5 is a schematic view showing a connection structure of the trash removing mechanism and the collecting mechanism of the present invention;

FIG. 6 is a schematic view of a cross-sectional configuration of the filter mechanism of the present invention;

FIG. 7 is a schematic side view of the filter mechanism of the present invention;

FIG. 8 is a schematic view of a mesh panel structure of the present invention.

In the figure: 1. a cabinet body; 2. a lifting mechanism; 21. a lifting screw; 22. a fixed gear ring; 23. a conical gear ring; 24. a thread plate; 3. an impurity removal mechanism; 31. a housing; 32. a blower; 33. an air outlet pipe; 34. a stationary case; 35. a suction fan; 36. a vent pipe; 37. a suction nozzle; 4. a collection mechanism; 41. a barrel; 42. a bottom cover; 43. a support frame; 44. inserting a rod; 45. a filter ring; 46. a connecting pipe; 47. a friction plate; 5. a filtering mechanism; 51. mounting a shell; 52. a screen plate; 53. fixing a sleeve; 54. filtering with a screen; 55. a rotating shaft; 56. a bevel gear; 57. a fan blade; 58. rotating the plate; 59. a brush; 6. a cabinet door; 7. a dust screen; 8. a plugging mechanism; 81. an outer frame; 82. closing the plate; 83. pressing a plate; 9. a motor; 10. a drive shaft; 11. the gears are driven.

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 of the 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.

Example (b): as shown in figures 1-8, the low-voltage distribution cabinet with an internal impurity removal and harm prevention structure comprises a cabinet body 1, wherein lifting mechanisms 2 are respectively arranged on two sides of the interior of the cabinet body 1, impurity removal mechanisms 3 are jointly arranged between the lifting mechanisms 2, the impurity removal mechanisms 3 are connected with a collection mechanism 4, filtering mechanisms 5 are respectively arranged on the side walls of the lower ends of the two sides of the cabinet body 1, the filtering mechanisms 5 are respectively connected with the lifting mechanisms 2 on the same side, cabinet doors 6 are respectively hinged to the two sides of the front side of the cabinet body 1, a dust screen 7 is fixedly connected to the side wall of the lower end of the back side of the cabinet body 1, a blocking mechanism 8 is arranged on the outer wall of the back side of part of the cabinet body 1 outside the dust screen 7, a motor 9 is fixedly connected to the outer wall of the middle part of the upper end of the cabinet body 1, the output end of the motor 9 faces downwards, and a driving shaft 10 is fixedly connected to the output end of the motor 9, the drive shaft 10 runs through and sliding connection is on the upper end lateral wall of the cabinet body 1, the lower extreme fixedly connected with drive gear 11 of drive shaft 10, drive gear 11 is connected with two elevating system 2, and motor 9 can drive two elevating system 2 and operate, makes two elevating system 2 can drive the motion of edulcoration mechanism 3 and filter mechanism 5 and clear up the work.

Wherein, shutoff mechanism 8 all includes frame 81, frame 81 is U-shaped structure and opening up, frame 81 fixed connection is on the partial cabinet body 1 back outer wall in the dust screen 7 outside, the inside of frame 81 is inserted and is equipped with shrouding 82, the upper end fixedly connected with clamp plate 83 of shrouding 82 can seal dust screen 7 during ordinary use for the air can't pass during dust screen 7 gets into the cabinet body 1, reaches the purpose of protection dust screen 7.

Wherein, elevating system 2 all includes lifting screw 21, lifting screw 21 all rotates perpendicularly and connects the inside at the cabinet body 1, all overlap on lifting screw 21's the upper end circumference outer wall and establish and fixed connection has fixed ring gear 22, fixed ring gear 22 all is connected with the meshing of drive gear 11, all overlap on lifting screw 21's the lower extreme circumference outer wall and establish and fixedly connected with awl ring gear 23, all overlap on lifting screw 21's the middle part circumference outer wall and establish and threaded connection has thread plate 24, thread plate 24 all supports on the part cabinet body 1 side inner wall of homonymy, can drive edulcoration mechanism 3 at the internal up-and-down motion of cabinet, detach the impurity in the cabinet body 1.

Wherein, edulcoration mechanism 3 includes casing 31, the both sides outer wall of casing 31 all is close to one side fixed connection with the threading board 24 of homonymy elevating system 2 mutually, fixedly connected with air-blower 32 on the upper end middle part lateral wall of casing 31, a plurality of air-out pipes 33 of equidistant fixedly connected with on the back lateral wall of casing 31, fixedly connected with set casing 34 on the front outer wall of casing 31, fixedly connected with suction fan 35 on the front lateral wall of set casing 34, equal fixedly connected with ventilation pipe 36 on the four corners lateral wall in back of set casing 34, the equal fixedly connected with suction nozzle 37 of one end of set casing 34 is kept away from to ventilation pipe 36, is convenient for detach the interior impurity of the cabinet body 1, avoids these impurity to damage the electronic component in the cabinet body 1.

Wherein, the collecting mechanism 4 comprises a cylinder 41, the cylinder 41 is fixedly connected to the outer wall of the lower end of the shell 31 of the impurity removing mechanism 3, the outer wall of the circumference of the lower end of the cylinder 41 is sleeved and fixedly connected with a bottom cover 42 in a threaded manner, the outer wall of the circumference of the bottom cover 42 is fixedly connected with a plurality of friction plates 47, the distance between every two adjacent friction plates 47 is the same, the side wall of the middle part of the lower end of the bottom cover 42 is in a penetrating state, the middle part of the lower end of the bottom cover 42 is fixedly connected with a support frame 43, the middle part of the upper end of the support frame 43 is fixedly connected with an inserted link 44, the inserted link 44 and the cylinder 41 are positioned on the same central line, the upper end of the inserted link 44 is inserted into the inner wall of the upper end of the cylinder 41, the outer wall of the circumference of the inserted link 44 is sleeved and fixedly connected with a plurality of filter rings 45, and the plurality of filter rings 45 are all slidably connected to the inside of the cylinder 41, fixedly connected with connecting pipe 46 on the positive upper end lateral wall of barrel 41, the one end fixed connection that barrel 41 was kept away from to connecting pipe 46 is on the suction fan 35 of edulcoration mechanism 3, is convenient for collect the impurity that gets into in the cabinet body 1, avoids these impurities to fall on the electronic component in the cabinet body 1 again.

Wherein, the filtering mechanisms 5 all comprise mounting shells 51, the mounting shells 51 are all fixedly connected in the side wall of the cabinet body 1, the middle parts of the mounting shells 51 are all fixedly connected with the mesh plate 52, the middle parts of the mesh plate 52 are all penetrated and fixedly connected with the fixing sleeve 53, the outer circumferential wall of one end of the fixing sleeve 53 far away from the mesh plate 52 is all sleeved with and connected with a filter screen 54, the outer sides of the filter screens 54 are all fixedly connected on the inner wall of the mounting shell 51 at the same side, the inner parts of the fixing sleeve 53 are all penetrated and fixedly connected with rotating shafts 55 through bearings, one ends of the rotating shafts 55 close to the inner part of the cabinet body 1 are all fixedly connected with bevel gears 56, the bevel gears 56 are all meshed with the bevel gear rings 23 of the lifting mechanism 2 at the same side, and a plurality of fan blades 57 are all fixedly connected on the outer circumferential walls of part of the rotating shafts 55 between the bevel gears 56 and the fixing sleeve 53 at the same side, two commentaries on classics boards 58 of equal symmetry fixedly connected with on the one end circumference outer wall that cabinet body 1 inside was kept away from to pivot 55, commentaries on classics board 58 is close to the equal fixedly connected with brush 59 in one side of the fixed cover 53 of homonymy, the equal sliding connection of brush 59 is on homonymy filter screen 54, is convenient for filter most impurity in the air, can clear up the impurity that filters down automatically afterwards simultaneously.

Specifically, when the invention is used, the invention is moved to a working place, electronic components are arranged in the cabinet body 1, a power supply is switched on, when impurities are required to be removed, the sealing plate 82 is upwards slid through the pressing plate 83, part of the dustproof net 7 is opened, so that external air can enter the cabinet body 1 through the dustproof net 7, then the motor 9, the blower 32 and the suction fan 35 are started, the motor 9 rotates the driving gear 11 through the driving shaft 10, the driving gear 11 drives the two fixed toothed rings 22 to rotate, the two fixed toothed rings 22 drive the installed lifting screw rods 21 to rotate, the two lifting screw rods 21 drive the shell 31 to move up and down in the cabinet body 1 through the installed threaded plate 24, meanwhile, the blower 32 blows air to the electronic components in the cabinet body 1 through the air outlet pipe 33 to lift impurities on the electronic components, and the suction fan 35 sucks the lifted impurities into the fixed shell 34, and carry the inside upper end of barrel 41, then the air passes filter ring 45 and discharges barrel 41, and impurity in the air can be filtered by filter ring 45, two lifting screw 21 pass through awl ring 23 and rotate same side bevel gear 56 simultaneously, bevel gear 56 drives the pivot 55 of installation and rotates, pivot 55 drive brush 59 slides in the outside of filter screen 54, will adhere to the impurity of filter screen 54 and dial off, and pivot 55 can drive fan 57 and rotate, blow to filter screen 54, blow away the impurity of dialling off on the filter screen 54, reach the purpose of clearance, after the clearance, move the casing 31 to the inside upper end of cabinet 1, close motor 9, and through clamp plate 83 downward motion shrouding 82, seal dust screen 7 through shrouding 82 can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The low-voltage power distribution cabinet with the internal impurity removal and harm prevention structure comprises a cabinet body (1) and is characterized in that lifting mechanisms (2) are mounted on two sides of the interior of the cabinet body (1), impurity removal mechanisms (3) are mounted between the lifting mechanisms (2) together, the impurity removal mechanisms (3) are connected with a collection mechanism (4), filtering mechanisms (5) are mounted in side walls of lower ends of two sides of the cabinet body (1), the filtering mechanisms (5) are connected with the lifting mechanisms (2) on the same side, cabinet doors (6) are hinged to two sides of the front of the cabinet body (1), a dust screen (7) is fixedly connected into the side wall of the lower end of the back of the cabinet body (1), a blocking mechanism (8) is mounted on the outer wall of the back of part of the cabinet body (1) outside the dust screen (7), and a motor (9) is fixedly connected onto the outer wall of the middle of the upper end of the cabinet body (1), the output of motor (9) is down, fixedly connected with drive shaft (10) on the output of motor (9), drive shaft (10) run through and sliding connection is on the upper end lateral wall of the cabinet body (1), the lower extreme fixedly connected with drive gear (11) of drive shaft (10), drive gear (11) are connected with two elevating system (2).

2. The low-voltage power distribution cabinet with the internal impurity removal and harm prevention structure is characterized in that the lifting mechanisms (2) comprise lifting screws (21), the lifting screws (21) are vertically and rotatably connected to the inside of the cabinet body (1), fixed gear rings (22) are sleeved and fixedly connected on the outer wall of the circumference of the upper end of the lifting screws (21), the fixed gear rings (22) are meshed and connected with the driving gear (11), conical gear rings (23) are sleeved and fixedly connected on the outer wall of the circumference of the lower end of the lifting screws (21), threaded plates (24) are sleeved and connected with the outer wall of the circumference of the middle of the lifting screws (21), and the threaded plates (24) are abutted to the inner wall of the side face of the partial cabinet body (1) on the same side.

3. The low-voltage power distribution cabinet with the internal impurity and harm removing and preventing structure as claimed in claim 1, it is characterized in that the impurity removing mechanism (3) comprises a shell (31), the outer walls of the two sides of the shell (31) are fixedly connected with one side, close to the threaded plate (24) of the lifting mechanism (2) on the same side, a blower (32) is fixedly connected on the side wall of the middle part of the upper end of the shell (31), a plurality of air outlet pipes (33) are fixedly connected on the back side wall of the shell (31) at equal intervals, a fixed shell (34) is fixedly connected on the outer wall of the front surface of the shell (31), a suction fan (35) is fixedly connected on the front side wall of the fixed shell (34), the side walls at four corners of the back of the fixed shell (34) are fixedly connected with ventilation pipes (36), one end of the ventilation pipe (36) far away from the fixed shell (34) is fixedly connected with a suction nozzle (37).

4. The low-voltage power distribution cabinet with an internal impurity removal and harm prevention structure is characterized in that the collection mechanism (4) comprises a cylinder body (41), the cylinder body (41) is fixedly connected to the outer wall of the lower end of a shell (31) of the impurity removal mechanism (3), a bottom cover (42) is sleeved on the outer wall of the circumference of the lower end of the cylinder body (41) and fixedly connected with threads, the side wall of the middle part of the lower end of the bottom cover (42) is in a penetrating state, a support frame (43) is fixedly connected to the middle part of the lower end of the bottom cover (42), an inserted rod (44) is fixedly connected to the middle part of the upper end of the support frame (43), a plurality of filter rings (45) are sleeved on the outer wall of the circumference of the inserted rod (44) and fixedly connected with the filter rings (45), the filter rings (45) are all slidably connected to the inside of the cylinder body (41), and a connecting pipe (46) is fixedly connected to the side wall of the upper end of the front of the cylinder body (41), one end of the connecting pipe (46) far away from the cylinder body (41) is fixedly connected to a suction fan (35) of the impurity removing mechanism (3).

5. The low-voltage power distribution cabinet with the internal impurity and pest removing and preventing structure is characterized in that the inserted rod (44) and the cylinder body (41) are located on the same central line, and the upper ends of the inserted rods (44) are inserted into the inner wall of the upper end of the cylinder body (41).

6. The low-voltage distribution cabinet with an internal impurity and pest removing structure according to claim 4, wherein a plurality of friction plates (47) are fixedly connected to the circumferential outer wall of the bottom cover (42), and the distances between every two adjacent friction plates (47) are the same.

7. The low-voltage power distribution cabinet with the internal impurity removal and harm prevention structure is characterized in that each filtering mechanism (5) comprises a mounting shell (51), the mounting shells (51) are fixedly connected in the side wall of the cabinet body (1), the middle parts of the mounting shells (51) are fixedly connected with a screen plate (52), the middle parts of the screen plates (52) are respectively penetrated and fixedly connected with a fixing sleeve (53), the outer walls of the circumferences of the ends, far away from the screen plate (52), of the fixing sleeves (53) are respectively sleeved and connected with a filter screen (54), the outer sides of the filter screens (54) are respectively and fixedly connected on the inner walls of the mounting shells (51) on the same side, the insides of the fixing sleeves (53) are respectively penetrated and fixedly connected with a rotating shaft (55) through a bearing, and the ends, close to the inside of the cabinet body (1), of the rotating shafts (55) are respectively and fixedly connected with bevel gears (56), bevel gear (56) all meshes with awl ring gear (23) of homonymy elevating system (2) and connects, equal fixedly connected with a plurality of flabellum (57) on bevel gear (56) and the partial pivot (55) circumference outer wall between the fixed cover (53) of homonymy, equal two commentaries on classics board (58) of symmetry fixedly connected with on the one end circumference outer wall of cabinet body (1) inside is kept away from in pivot (55), change board (58) and be close to equal fixedly connected with brush (59) in one side of the fixed cover (53) of homonymy, equal sliding connection of brush (59) is on homonymy filter screen (54).

8. The low-voltage power distribution cabinet with the internal impurity removal and harm prevention structure is characterized in that the blocking mechanisms (8) respectively comprise an outer frame (81), the outer frame (81) is of a U-shaped structure and has an upward opening, the outer frame (81) is fixedly connected to the outer wall of the back of part of the cabinet body (1) on the outer side of the dust screen (7), a sealing plate (82) is inserted into the outer frame (81), and a pressing plate (83) is fixedly connected to the upper end of the sealing plate (82).