CN113328353B

CN113328353B - Novel electrical cabinet

Info

Publication number: CN113328353B
Application number: CN202110677359.2A
Authority: CN
Inventors: 田徐泳
Original assignee: Tbea Yunji Electric Co ltd
Current assignee: Tbea Yunji Electric Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2023-11-03
Anticipated expiration: 2041-06-18
Also published as: CN113328353A

Abstract

The invention discloses a novel electrical cabinet, which comprises a cabinet body, wherein a cabinet door which is turned and opened is hinged at the front end of the cabinet body, an air outlet is formed in the upper end of the cabinet body, and an air inlet box is arranged at the lower end of the cabinet body; the two sides of the cabinet body are provided with telescopic mechanisms, the lower end of the air inlet box is separated from the ground to form air inlet under the action of the telescopic mechanisms, an exhaust mechanism is arranged between the telescopic mechanisms at the two sides, and the lower end of the exhaust mechanism is in butt joint with the air outlet; a suspended ceiling plate is paved in the machine room, preferably adopts a heat insulation plate, and is suspended by a light steel keel; ensuring enough installation firmness; a heat extraction gap is formed between the ceiling plate and the top in the machine room; the device can realize effective heat removal, and avoid the heat of the exhaust to be neutralized, reduce the refrigeration energy consumption of the machine room and reduce the operation cost of the machine room.

Description

Novel electrical cabinet

Technical Field

The invention relates to a novel electrical cabinet.

Background

The electric cabinet is a cabinet which is formed by processing steel materials and is used for protecting components from working normally. The materials for manufacturing the electrical cabinet are generally divided into two types, namely a hot-rolled steel plate and a cold-rolled steel plate. Compared with a hot-rolled steel plate, the cold-rolled steel plate is softer in material and more suitable for manufacturing an electrical cabinet. The electric cabinet is widely used in chemical industry, environmental protection industry, electric power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, traffic industry and the like.

In the computer lab, the use quantity of regulator cubicle is more, and the regulator cubicle among the conventional art, and its thermovent that is used for radiating is exposed in the computer lab, rotates through the inside fan of regulator cubicle, carries outside the inside heat of regulator cubicle to the computer lab in for the computer lab is when maintaining inside temperature, needs the operation of many air conditioning systems high speed simultaneously, just can neutralize the heat that this part produced, consequently the energy consumption of computer lab is higher.

Therefore, a novel electrical cabinet capable of effectively exhausting heat, avoiding the neutralization of the exhausted heat, reducing the refrigeration energy consumption of a machine room and reducing the operation cost of the machine room is designed.

Disclosure of Invention

The invention aims to solve the technical problem of providing a novel electrical cabinet which can realize effective heat removal, avoid neutralization of the discharged heat, reduce the refrigeration energy consumption of a machine room and reduce the operation cost of the machine room.

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

the novel electrical cabinet comprises a cabinet body, wherein a cabinet door which is turned and opened is hinged at the front end of the cabinet body, an air outlet is formed in the upper end of the cabinet body, and an air inlet box is arranged at the lower end of the cabinet body; the two sides of the cabinet body are provided with telescopic mechanisms, the lower end of the air inlet box is separated from the ground to form air inlet under the action of the telescopic mechanisms, an exhaust mechanism is arranged between the telescopic mechanisms at the two sides, and the lower end of the exhaust mechanism is in butt joint with the air outlet; a suspended ceiling plate is paved in the machine room, preferably adopts a heat insulation plate, and is suspended by a light steel keel; ensuring enough installation firmness; a heat extraction gap is formed between the ceiling plate and the top in the machine room, and the vertical height of the heat extraction gap is 10 cm-20 cm; when in actual use, the ceiling plate needs to be fully paved, and then the outdoor pumping and exhausting equipment is arranged to continuously pump and exhaust the air in the heat exhausting gap; the backflow of hot gas is avoided; a jack is formed in the position, corresponding to the exhaust mechanism, of the ceiling plate, an air outlet pipe is arranged at the upper end of the exhaust mechanism, and the air outlet pipe is inserted into the jack upwards; an air inlet treatment device is arranged on the ground, and the lower end of the air inlet box is inserted into the air inlet treatment device; the air inlet treatment device mainly carries out simple filtration on the air inlet; dust accumulation above the ceiling plate is reduced; meanwhile, the cleaning in the cabinet body is ensured. Reducing the surface dust coverage of the electrical components.

Preferably, the telescopic mechanism comprises a connecting plate connected with the roof and two vertical pipes welded at the bottom of the connecting plate; the vertical pipes penetrate through the sleeves, limiting nuts are connected to the lower ends of the vertical pipes in a threaded mode, springs are sleeved on the vertical pipes, and the springs act between the sleeves and the limiting nuts; a mounting pipe is arranged at the outer wall of the sleeve, a positioning shaft is inserted into the mounting pipe, and the end of the positioning shaft inserted into the mounting pipe is in spherical transition; a guide shaft is welded on the outer wall of the positioning shaft, and a guide chute matched with the guide shaft is formed on the outer wall of the mounting pipe; a limiting cover is screwed into the tail end of the mounting tube, a first spring is sleeved on the positioning shaft, and the first spring acts between the guide shaft and the limiting cover; an annular clamping groove is formed in the outer wall of the vertical pipe, and the positioning shaft is clamped into the clamping groove after the sleeve slides upwards along the vertical pipe; the lower end face of the cabinet body is separated from the ground by more than 20cm; the exhaust mechanism is matched between the vertical pipes at two sides.

In the technical scheme, the method comprises the following steps of; the positioning of the cabinet body is realized through the cooperation of the vertical pipes and the sleeves; compared with the cabinet body placed on the ground in the prior art, the installation mode can keep the placement stability of the cabinet body higher. The cabinet body is prevented from lodging in the use process. Secondly, the structure supports the vertical sliding of the cabinet body, and the lower end face of the cabinet body is separated from the ground. Is convenient for cleaning the sanitation in the machine room. The machine room is cleaner. And is installed off the ground. Therefore, the problem of rat hiding below the cabinet body in the prior art can be avoided. And the slidable mechanism ensures that the cabinet body can be locked in position through the cooperation of the positioning shaft and the clamping groove after the cabinet body moves upwards. The indoor cleaning and maintenance of the air inlet box are facilitated.

Preferably, the exhaust mechanism comprises a fan, two pin shafts are arranged at the left and right of the outer wall of the fan, an L-shaped connecting rod is matched through the pin shafts, and a pre-tightening nut is matched after the pin shafts penetrate through the connecting rod; the connecting sleeve is arranged at the end, away from the fan, of the connecting rod, and the connecting sleeve is fixed with the vertical pipe through screws; the lower end of the fan is provided with a connecting pipe, and the air outlet pipe is arranged at the upper end of the fan; a first connecting pipe is arranged at the position of the air outlet hole; a folding pipe is matched between the connecting pipe and the first connecting pipe. In practical application, a temperature sensor can be arranged in the cabinet body, a controller is matched with the temperature sensor, the internal temperature of the cabinet body is monitored through the temperature sensor, when the internal temperature of the cabinet body is too high, the rotating speed of the fan is controlled through the controller, the speed of entering cold air from the air inlet box is increased through a rapid air exhaust mode, and meanwhile heat accumulated in the cabinet body is conveniently pumped upwards; realize the quick cooling of the cabinet body. When the internal temperature of the cabinet body is in an ideal state, the temperature sensor is matched with the controller to control the rotating speed of the fan, so that the low rotating speed of the fan is kept, and the rapid loss of cold air in the machine room caused by the rapid cold air suction is avoided. Through intelligent regulation, under the circumstances that keeps the internal temperature safety of cabinet, reduce the refrigeration energy consumption of computer lab.

The technical scheme has two effects:

first, provide the negative pressure through the operation of fan, upwards pump out the internal heat of cabinet to carry the top of furred ceiling board to realize rejecting heat.

Secondly, removing the folding pipe and the air outlet pipe; and then rotating the fan to enable the fan to be arranged at a certain angle. The air circulation in the machine room is facilitated. When air circulation is adopted, the heat removal gap is required to be kept blocked from the outside, so that the loss of cold is avoided.

Preferably, a slot is arranged at the front end of the cabinet body near the bottom, and an inner box body is inserted into the slot; the inside of interior box body sets up a horizontal confined baffle, has seted up a plurality of ventilation holes that vertically run through on the baffle, installs first fan in ventilation hole department.

The technical scheme mainly aims at improving wind power.

Preferably, the air inlet box is conical, and the diameter of the air inlet box is gradually reduced downwards; the air inlet treatment device comprises a circular shell, a plurality of air inlet holes are annularly formed in the outer wall of the shell, and the air inlet holes are separated from the ground by more than 10 mm; an opening hole for inserting the air inlet box is formed in the upper end of the shell; an upward convex ring is arranged at the inner bottom of the shell; the upper end of the convex ring is clamped with filter cotton; when the air inlet box is inserted into the shell downwards and the cabinet body moves downwards to the limit, the filter cotton is attached to the outer conical surface of the air inlet box.

In the technical scheme, the filter cotton can filter dust of the passing air. Meanwhile, when the cabinet body moves downwards, the buffer effect on the cabinet body can be achieved through the contact of the filter cotton and the air inlet box. And the filter cotton quilt is contacted with the outer conical surface of the air inlet box after being compressed, so that the sealing effect is improved. So that air can only enter the cabinet body after passing through the filter cotton. In the above technical scheme, the convex ring is arranged, the convex ring can separate the shell, and secondly, when water is accumulated on the ground, the waterproof height can be increased due to the arrangement of the convex ring.

Preferably, a metal filter screen is sleeved on the outer wall of the shell; when the cabinet moves upwards until the air inlet box is separated from the outer shell, the metal filter screen can be removed upwards.

In the technical scheme, the metal filter screen can have the technical effect of insect prevention. Meanwhile, after the cabinet body moves upwards, the metal filter screen can be directly removed upwards, so that the metal filter screen is easier to maintain.

Preferably, a first clamping groove is formed in the hole wall of the opening hole, a clamping ring made of elastic rubber is arranged in the first clamping groove, a sealing film is arranged on the inner wall of the clamping ring, and the thickness of the sealing film is gradually reduced towards the center; the air inlet box is inserted and then contacts with the sealing film, and forms a seal after being attached to the sealing film.

The above-described technique is to increase the sealability. So that the wind force can only pass through the metal filter screen and then pass through the air inlet hole; and then enters the cabinet body. Secondly, in the process of inserting the air inlet box, the fit clearance between the air inlet box and the sealing film is gradually reduced until interference fit is achieved; that is, when the cabinet body is lowered, a certain buffer effect can be achieved by the sealing film through the interference fit.

The beneficial effects of the invention are as follows:

the advantages are as follows: in the technical scheme of the invention, the cabinet body is positioned and installed, so that the risk resistance is higher, and the stability can be effectively maintained when geological disasters such as earthquake and the like are encountered; ensuring stable performance in and after disaster;

the advantages are as follows: in the technical scheme of the invention, heat accumulated in the cabinet body is discharged upwards to the upper part of the ceiling plate, and cold air is distributed below the ceiling plate, so that the condition of hot air circulation is avoided. The output power of the air exhaust mechanism is regulated according to the internal temperature of the power distribution cabinet;

the method has the following advantages: according to the technical scheme, air is fed into the bottom of the cabinet body, is simply filtered through the air feeding treatment device, so that the technical effects of insect prevention and mouse prevention are achieved, and the air feeding treatment device can be rapidly maintained by moving the cabinet body upwards;

the advantages are four: the invention has simple technology, low cost and convenient implementation.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a front view of the telescoping mechanism;

FIG. 3 is a schematic illustration of the mating of a standpipe and a cannula;

FIG. 4 is a front view of the exhaust mechanism;

FIG. 5 is a cross-sectional view of an air intake treatment device;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a top view of the inner case.

Description of the embodiments

All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.

In the description of the present invention, it should be understood that the terms "one end," "the other end," "the outer side," "the upper," "the inner side," "the horizontal," "coaxial," "the center," "the end," "the length," "the outer end," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "coupled," "connected," "plugged," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

See fig. 1-7.

Example 1

The novel electrical cabinet comprises a cabinet body 1, wherein a cabinet door 2 which is opened in a turning manner is hinged at the front end of the cabinet body 1, an air outlet is formed in the upper end of the cabinet body 1, and an air inlet box 3 is arranged at the lower end of the cabinet body 1; the two sides of the cabinet body 1 are provided with telescopic mechanisms 4, the lower end of the air inlet box 3 is separated from the ground to form air inlet under the action of the telescopic mechanisms 4, an air exhaust mechanism 5 is arranged between the telescopic mechanisms 4 on the two sides, and the lower end of the air exhaust mechanism 5 is in butt joint with the air outlet hole; a suspended ceiling plate 6 is paved in the machine room, and the suspended ceiling plate 6 is preferably an insulation board and is suspended by a light steel keel; ensuring enough installation firmness; a heat extraction gap is formed between the ceiling plate 6 and the top in the machine room, and the vertical height of the heat extraction gap is 10 cm-20 cm; when in actual use, the ceiling board 6 needs to be fully paved, and then the outdoor pumping and exhausting equipment is arranged to continuously pump and exhaust the air in the heat exhausting gap; the backflow of hot gas is avoided; a jack 601 is formed in the position, corresponding to the exhaust mechanism 5, of the ceiling plate 6, an air outlet pipe 7 is arranged at the upper end of the exhaust mechanism 5, and the air outlet pipe 7 is inserted into the jack 601 upwards; an air inlet treatment device 8 is arranged on the ground, and the lower end of the air inlet box 3 is inserted into the air inlet treatment device 8; the air inlet treatment device 8 is mainly used for simply filtering the air inlet; reducing dust accumulation above the ceiling tile 6; while ensuring the cleanliness in the cabinet 1. Reducing the surface dust coverage of the electrical components.

Example 2

The telescopic mechanism 4 comprises a connecting plate 401 connected with the roof and two vertical pipes 402 welded at the bottom of the connecting plate 401; the vertical pipes 402 penetrate through the sleeves 403, limiting nuts 404 are connected to the lower ends of the vertical pipes 402 in a threaded mode, springs 405 are sleeved on the vertical pipes 402, and the springs 405 act between the sleeves 403 and the limiting nuts 404; a mounting tube 406 is arranged at the outer wall of the sleeve 403, a positioning shaft 407 is inserted into the mounting tube 406, and the end of the positioning shaft 407 inserted into the mounting tube 406 is in spherical transition; a guide shaft 408 is welded on the outer wall of the positioning shaft 407, and a guide chute 409 matched with the guide shaft 408 is arranged on the outer wall of the mounting pipe 406; a limit cover 410 is screwed into the tail end of the mounting tube 406, a first spring 411 is sleeved on the positioning shaft 407, and the first spring 411 acts between the guide shaft 408 and the limit cover 410; an annular clamping groove 412 is formed in the outer wall of the vertical tube 402, and the positioning shaft 407 is clamped into the clamping groove 412 after the sleeve 403 slides up along the vertical tube 402; the lower end surface of the cabinet body 1 at the moment is separated from the ground by more than 20cm; the exhaust mechanism 5 is fitted between the risers 402 on both sides.

In the technical scheme, the method comprises the following steps of; the positioning of the cabinet 1 is realized through the cooperation of the vertical pipes 402 and the sleeves 403; compared with the cabinet body placed on the ground in the prior art, the installation mode can keep the placement stability of the cabinet body 1 higher. The cabinet body 1 is prevented from falling down in the using process. Secondly, the above-mentioned structure supports the vertical sliding of the cabinet body 1, and the lower end surface of the cabinet body 1 is separated from the ground. Is convenient for cleaning the sanitation in the machine room. The machine room is cleaner. And is installed off the ground. Therefore, the problem of rat hiding below the cabinet body in the prior art can be avoided. And the slidable mechanism can realize the position locking of the cabinet body 1 through the cooperation of the positioning shaft 407 and the clamping groove 412 after the cabinet body 1 moves upwards. The indoor cleaning and maintenance of the air inlet box 3 are facilitated.

Example 3

The exhaust mechanism 5 comprises a fan 501, two pin shafts 502 are arranged at the left and right of the outer wall of the fan 501, an L-shaped connecting rod 503 is matched through the pin shafts 502, and a pre-tightening nut 504 is matched after the pin shafts 502 penetrate through the connecting rod 503; the end of the connecting rod 503 away from the fan 501 is provided with a connecting sleeve 505, and the connecting sleeve 505 is fixed with the vertical pipe 402 by screws; a connecting pipe 506 is arranged at the lower end of the fan 501, and the air outlet pipe 7 is arranged at the upper end of the fan 501; a first connecting pipe 507 is installed at the position of the air outlet hole; a folded tube 508 is fitted between the connection tube 506 and the first connection tube 507.

The technical scheme has two effects:

first, negative pressure is provided by the operation of the fan 501, and heat in the cabinet body 1 is pumped upwards and discharged and is conveyed to the upper side of the ceiling plate 6 to realize heat discharge.

Second, the folding pipe 508 and the air outlet pipe 7 are removed; the fan 501 is then rotated such that the fan 501 is disposed at an angle. The air circulation in the machine room is facilitated. When air circulation is adopted, the heat removal gap is required to be kept blocked from the outside, so that the loss of cold is avoided.

Example 3

A slot is arranged at the front end of the cabinet body 1 near the bottom, and an inner box body 9 is inserted into the slot; the inside of the inner box body 9 is provided with a transverse closed partition 901, a plurality of vertically penetrating vent holes are formed in the partition 901, and a first fan 902 is installed at the vent holes.

The technical scheme mainly aims at improving wind power.

Example 4

The air inlet box 3 is conical, and the diameter of the air inlet box is gradually reduced downwards; the air inlet treatment device 8 comprises a circular shell 801, wherein a plurality of air inlet holes 822 are annularly arranged at the outer wall of the shell 801, and the air inlet holes 822 are separated from the ground by more than 10 mm; an opening 802 for inserting the air inlet box 3 is provided at the upper end of the housing 801; an upwardly convex bead 803 is provided at an inner bottom position of the housing 801; filter cotton 804 is clamped at the upper end of the convex ring 803; when the air inlet box 3 is inserted into the outer shell 801 downwards, and the cabinet 1 moves downwards to the limit, the filter cotton 804 is attached to the outer conical surface of the air inlet box 3.

In the above-mentioned technical solution, the filter cotton 804 can filter dust from the passing air. Meanwhile, when the cabinet body 1 moves downwards, the buffer effect on the cabinet body 1 can be achieved through the contact between the filter cotton 804 and the air inlet box 3. And the filter cotton 804 is compressed and then contacts with the outer conical surface of the air inlet box 3, so that the sealing effect is improved. So that air can only enter the cabinet 1 after passing through the filter cotton 804. In the above technical scheme, the convex ring 803 is arranged, the convex ring 803 can separate the housing 801, and secondly, when water is accumulated on the ground, the waterproof height can be increased by the convex ring 803.

Example 5

A metal filter screen 805 is sleeved on the outer wall of the outer shell 801; when the cabinet 1 moves upward until the inlet box 3 is separated from the outer case 801, the metal screen 805 can be removed upward.

In the above technical solution, the metal filter screen 805 may have an insect-proof technical effect. Meanwhile, after the cabinet 1 moves upwards, the metal filter screen 805 can be directly removed upwards, so that the metal filter screen 805 is easier to maintain.

Example 6

A first clamping groove 811 is formed in the hole wall of the opening hole 802, a collar 812 made of elastic rubber material is arranged in the first clamping groove 811, a sealing film 813 is arranged on the inner wall of the collar 812, and the thickness of the sealing film 813 gradually decreases towards the center; the air inlet box 3 is inserted and then contacts the sealing film 813, and is attached to the sealing film to form a seal.

The above-described technique is to increase the sealability. So that the wind force can only pass through the metal filter screen 805 and then pass through the air inlet 822; and then into the cabinet 1. Secondly, in the process of inserting the air inlet box 3, the fit clearance between the air inlet box and the sealing film 813 is gradually reduced until the air inlet box is in interference fit; that is, when the cabinet body 1 is lowered, a certain buffering effect can be achieved by the sealing film 813 through the interference fit.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The novel electrical cabinet comprises a cabinet body (1), wherein a cabinet door (2) which is opened in a turning way is hinged at the front end of the cabinet body (1), an air outlet is formed in the upper end of the cabinet body (1), and an air inlet box (3) is arranged at the lower end of the cabinet body (1); the method is characterized in that: telescopic mechanisms (4) are arranged on two sides of the cabinet body (1), the lower end of the air inlet box (3) is separated from the ground to form air inlet under the action of the telescopic mechanisms (4), an air exhaust mechanism (5) is arranged between the telescopic mechanisms (4) on two sides, and the lower end of the air exhaust mechanism (5) is in butt joint with the air outlet; a ceiling board (6) is paved in the machine room, a heat extraction gap is formed between the ceiling board (6) and the top in the machine room, a jack (601) is formed in the position, corresponding to the exhaust mechanism (5), of the ceiling board (6), an air outlet pipe (7) is installed at the upper end of the exhaust mechanism (5), and the air outlet pipe (7) is upwards inserted into the jack (601); an air inlet treatment device (8) is arranged on the ground, and the lower end of the air inlet box (3) is inserted into the air inlet treatment device (8);

the telescopic mechanism (4) comprises a connecting plate (401) connected with the roof and two vertical pipes (402) welded at the bottom of the connecting plate (401); the vertical pipes (402) penetrate through the sleeves (403), limiting nuts (404) are connected to the lower ends of the vertical pipes (402) in a threaded mode, springs (405) are sleeved on the vertical pipes (402), and the springs (405) act between the sleeves (403) and the limiting nuts (404); a mounting tube (406) is arranged at the outer wall of the sleeve (403), a positioning shaft (407) is inserted into the mounting tube (406), and the end of the positioning shaft (407) inserted into the mounting tube (406) is in spherical transition; a guide shaft (408) is welded on the outer wall of the positioning shaft (407), and a guide chute (409) matched with the guide shaft (408) is formed on the outer wall of the mounting pipe (406); a limiting cover (410) is screwed at the tail end of the mounting pipe (406), a first spring (411) is sleeved on the positioning shaft (407), and the first spring (411) acts between the guide shaft (408) and the limiting cover (410); an annular clamping groove (412) is formed in the outer wall of the vertical pipe (402), and the positioning shaft (407) is clamped into the clamping groove (412) after the sleeve (403) slides upwards along the vertical pipe (402); the lower end surface of the cabinet body (1) at the moment is separated from the ground by more than 20cm; the exhaust mechanism (5) is matched between the vertical pipes (402) at two sides;

wherein the air inlet box (3) is conical, and the diameter of the air inlet box is gradually reduced downwards; the air inlet treatment device (8) comprises a circular shell (801), wherein a plurality of air inlet holes (822) are annularly formed in the outer wall of the shell (801), and the air inlet holes (822) are separated from the ground by more than 10 mm; an opening hole (802) for inserting the air inlet box (3) is formed in the upper end of the shell (801); an upward convex ring (803) is arranged at the inner bottom position of the shell (801); a filter cotton (804) is clamped at the upper end of the convex ring (803); when the air inlet box (3) is inserted into the outer shell (801) downwards, and the cabinet body (1) moves downwards to the limit, the filter cotton (804) is attached to the outer conical surface of the air inlet box (3).

2. The novel electrical cabinet of claim 1, wherein: the exhaust mechanism (5) comprises a fan (501), two pin shafts (502) are arranged at the left and right sides of the outer wall of the fan (501), an L-shaped connecting rod (503) is matched with the pin shafts (502), and a pre-tightening nut (504) is matched with the pin shafts (502) after the pin shafts (502) penetrate through the connecting rod (503); the end, far away from the fan (501), of the connecting rod (503) is provided with a connecting sleeve (505), and the connecting sleeve (505) and the vertical pipe (402) are fixed by screws; the lower end of the fan (501) is provided with a connecting pipe (506), and the air outlet pipe (7) is arranged at the upper end of the fan (501); a first connecting pipe (507) is arranged at the position of the air outlet hole; a folding tube (508) is fitted between the connecting tube (506) and the first connecting tube (507).

3. The novel electrical cabinet of claim 1, wherein: a slot is arranged at the front end of the cabinet body (1) close to the bottom, and an inner box body (9) is inserted into the slot; the inside of interior box body (9) sets up a horizontal confined baffle (901), has seted up a plurality of ventilation holes that vertically run through on baffle (901), installs first fan (902) in ventilation hole department.

4. The novel electrical cabinet of claim 1, wherein: a metal filter screen (805) is sleeved on the outer wall of the shell (801); when the cabinet body (1) moves upwards to the state that the air inlet box (3) is separated from the outer shell (801), the metal filter screen (805) can be removed upwards.

5. The novel electrical cabinet of claim 1 or 4, wherein: a first clamping groove (811) is formed in the hole wall of the opening hole (802), a clamping ring (812) made of elastic rubber material is arranged in the first clamping groove (811), a sealing film (813) is arranged on the inner wall of the clamping ring (812), and the thickness of the sealing film (813) is gradually reduced towards the center; the air inlet box (3) is inserted and then contacts the sealing film (813) and is adhered with the sealing film to form a seal.