CN115765278A

CN115765278A - Explosion-proof motor

Info

Publication number: CN115765278A
Application number: CN202310031377.2A
Authority: CN
Inventors: 魏秋湘
Original assignee: Wuxi Hongtai Motor Co ltd
Current assignee: Wuxi Hongtai Motor Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-03-07
Anticipated expiration: 2043-01-10
Also published as: CN115765278B

Abstract

The invention discloses an explosion-proof motor. The technical problem to be solved is as follows: the content of inflammable and explosive gas and dust in the existing explosion-proof motor is too high, the interior of the motor cannot be effectively cooled, and the capacity of treating explosion by emergency measures is absent. The technical scheme of the invention is as follows: an explosion-proof motor comprises a shell, an end cover and the like; the left side and the right side of the shell are respectively fixedly connected with an end cover. The cooling device realizes that the cooling liquid flowing through the two circulators cools the two bearings in the rotor, and the circulating pipe which is in the continuous S shape and surrounds the surface of the inner shell has more obvious cooling effect on the rotor and the main shaft, so that the contact area of the circulating pipe and the inner shell is greatly increased, the circulating and heat absorbing time is greatly prolonged, and the main shaft, the rotor and the bearings in the working process are fully cooled.

Description

Explosion-proof motor

Technical Field

The invention relates to the field of explosion-proof motors, in particular to an explosion-proof motor.

Background

The explosion-proof motor is a motor which can be used in flammable and explosive places, and does not generate electric sparks during operation. The explosion-proof motor is mainly used in coal mine, petroleum and natural gas, petrochemical industry and chemical industry. In addition, the method is widely applied to the departments of textile, metallurgy, urban gas, transportation, grain and oil processing, paper making, medicine and the like. Explosion-proof motors are used as main power equipment, and are generally used for driving pumps, fans, compressors, other transmission machines and the like. Because the working environment of the explosion-proof motor is severe and dangerous, the environment generally contains a large amount of flammable and explosive gases and dust, in the working process, although the arrangement of the existing explosion-proof motor can prevent the dust or the gas from entering the motor, the dust or the gas cannot be completely prevented, the phenomenon of dust and gas entering can be avoided at the connecting part between the motor shell and the end cover, and because the temperature in the motor is high during working, and along with the rising of the flammable and explosive gases and the dust content, the explosion danger can easily occur, meanwhile, the temperature is too high, great damage can be generated to a stator, a bearing, a main shaft and the like in the motor, the service life of the motor is greatly reduced, meanwhile, the existing motor has no emergency reaction, and for the dangerous working environment, the explosion and the like can be caused in a larger range, and the life of workers is threatened.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the explosion-proof motor which can reduce the content of inflammable and explosive gases and dust in the explosion-proof motor, effectively cool the interior of the motor and take emergency measures to treat explosion.

In order to achieve the purpose, the invention is realized by the following technical scheme: an explosion-proof motor comprises an outer shell, an end cover, a main shaft, an inner shell and a rotor; the left side and the right side of the shell are respectively fixedly connected with an end cover; the inner shell is arranged on the inner side of the outer shell; a rotor is arranged in the inner shell; the rotor is provided with a main shaft; the device also comprises a circulating cooling mechanism, a heat dissipation and drainage mechanism and a quick explosion-proof mechanism; a circulating cooling mechanism for cooling the interior of the motor is arranged between the outer shell and the inner shell; a heat dissipation and drainage mechanism which is used for air cooling and heat dissipation and carries out drainage and elimination on inflammable and explosive gas and dust is arranged between the end cover and the shell; the heat dissipation and drainage mechanism is connected with the inner shell; a quick explosion-proof mechanism for quickly extinguishing and preventing fire in the motor is arranged on the end cover through a bolt; the quick explosion-proof mechanism is contacted with the main shaft; the circulating cooling mechanism is in contact with the main shaft.

Optionally, the circulating cooling mechanism comprises a liquid inlet pipe, a connecting pipe, a circulator, a spacer block, a circulating pipe and a liquid outlet pipe; a liquid inlet pipe is arranged between the outer shell and the inner shell, and the left end of the liquid inlet pipe is externally connected with a water inlet pipeline; two circulators which are symmetrical left and right are arranged on the inner shell; a spacer block is arranged in each of the two circulators, and the two spacer blocks respectively separate the interiors of the adjacent circulators; the right side of the liquid inlet pipe is communicated with the right circulator; a connecting pipe is arranged between the outer shell and the inner shell; the left side of the connecting pipe is communicated with the left circulator; the right side of the connecting pipe is communicated with the right circulator; a circulating pipe is arranged between the outer shell and the inner shell; one end of the circulating pipe is communicated with the left circulator, and the other end of the circulating pipe penetrates through the shell and is communicated with a liquid outlet pipe.

Optionally, the spacer is located in the middle of the conduit communicating with the circulator.

Alternatively, the circulation duct is provided in successive S-shapes.

Optionally, the heat dissipation and drainage mechanism comprises an outer toothed ring, a first flat gear, a first connecting shaft, a second flat gear, a second connecting shaft, an inner toothed ring, a heat dissipation fan, a first guide plate, a wing-shaped air entraining group, a second guide plate, a sealing frame, an annular pipe and an air outlet pipe; an outer gear ring is arranged on the right side of the main shaft; the right side of the inner shell is rotatably connected with a plurality of first connecting shafts arranged in an annular array; a first flat gear is fixedly connected to the right side of each of the first connecting shafts; a second flat gear is fixedly connected to the left side of each of the first connecting shafts; a plurality of first flat gears are meshed with the outer gear ring; the left side of the inner shell is rotatably connected with a plurality of second connecting shafts arranged in an annular array; the right sides of the second connecting shafts are fixedly connected with an inner gear ring respectively; the plurality of inner gear rings are respectively meshed with the adjacent second flat gears; the right sides of the first connecting shafts are respectively fixedly connected with a heat dissipation fan; the left sides of the first connecting shafts are respectively fixedly connected with a heat dissipation fan; the left side and the right side of the heat dissipation fan are symmetrically arranged and are in a state of sucking air to the inner side; a plurality of first guide plates are annularly arranged on the left side and the right side of the inner shell respectively; a plurality of second guide plates are annularly arranged on the left side and the right side of the inner shell respectively; the plurality of first guide plates and the plurality of second guide plates are arranged in a staggered state; a plurality of wing-shaped air entraining groups are annularly arranged on the left side and the right side of the inner shell respectively, each wing-shaped air entraining group consists of a plurality of wing-shaped air entraining blocks, and each wing-shaped air entraining group is arranged at a position close to the heat radiating fan; a plurality of sealing frames are arranged between the outer shell and the left side of the inner shell in an annular array manner; a plurality of sealing frames are arranged between the outer shell and the right side of the inner shell in an annular array; the left sealing frames are respectively positioned on the right sides of the adjacent heat dissipation fans, and the right sealing frames are respectively positioned on the left sides of the adjacent heat dissipation fans; an annular pipe is arranged between the outer shell and the left side of the inner shell; an annular pipe is also arranged between the outer shell and the right side of the inner shell; the plurality of sealing frames are communicated with the adjacent annular pipes by adopting pipelines; two annular pipes are communicated with an air outlet pipe, and the two air outlet pipes are externally connected with an air release valve.

Optionally, the first guide plate and the second guide plate are both arranged in an S shape, the first guide plate and the second guide plate on two sides of the heat dissipation fan are symmetrically arranged, and a gas flow passage is reserved between the first guide plate and the inner shell and between the second guide plate and the inner shell.

Optionally, the wing-shaped air-guiding block is arranged in a camber shape near the radiating fan.

Optionally, the rapid explosion-proof mechanism comprises a hollow air storage ring, an L-shaped hollow plate, a square pipe, an elastic member and a baffle plate; the opposite sides of the two end covers are fixedly connected with a hollow air storage ring respectively; the two hollow air storage rings are respectively communicated with a square pipe; an L-shaped hollow plate is fixedly connected to each of the two square pipes; an elastic piece is fixedly connected inside each L-shaped hollow plate; the lower ends of the two elastic pieces are fixedly connected with a baffle respectively; the two baffle plates are respectively provided with an air outlet; the two baffle plates are respectively connected with the adjacent square pipes in a sliding way.

Optionally, a suitable amount of a mixed gas of nitrogen and carbon dioxide is stored inside the hollow gas storage ring.

Optionally, the L-shaped hollow plate holds an appropriate amount of mercury therein.

The invention has the following advantages: the cooling effect of the cooling liquid in the circulating pipe on the rotor and the main shaft is more obvious through the circulating pipe which is continuously S-shaped and surrounds the surface of the inner shell, because of the surrounding and continuous S-shape, the contact area of the circulating pipe and the inner shell is greatly increased, the circulating and heat absorbing time is greatly prolonged, and the main shaft, the rotor and the bearings in the working process are fully cooled;

the left and right sides of the heat dissipation fan realize air suction effect, meanwhile, the wing-shaped air entraining group is formed by combining a plurality of wing-shaped air entraining blocks, one surface of each wing-shaped air entraining block, which is close to the heat dissipation fan, is arranged in an arch shape, when the flow rate of gas of the wing-shaped air entraining block, which is close to the heat dissipation fan, is accelerated, the lower surface and the upper surface of the wing-shaped air entraining block generate corresponding air pressure difference, namely the air pressure of the lower surface of the wing-shaped air entraining block is high, the air pressure of the upper surface is low, so that hot gas between the end cover and the rotor is further sucked out, then enters the sealing frame, finally enters the annular pipe from the sealing frame, and finally is discharged from the air outlet pipe, thereby realizing the air exchange and heat dissipation effects;

the suction force generated by the heat dissipation fan is utilized, and meanwhile the first guide plate and the second guide plate guide the circulation of the inflammable and explosive gas and dust, so that the inflammable and explosive gas and the dust smoothly enter the sealing frame and are finally communicated with hot gas and discharged together from the air outlet pipe, the problems that the inflammable and explosive gas and the dust are accumulated in the motor and the content is too high are effectively prevented, the explosion is caused, the safety performance of the motor is improved, and the possibility of explosion is reduced;

the temperature risees, and the baffle descends gradually, and when the temperature was about to reach extremely, the baffle has descended a take the altitude to gas outlet and square tub of combination this moment, and then make the inside low temperature nitrogen gas and the carbon dioxide of depositing of hollow gas storage ring release through square tub of is quick, when reducing the inside temperature of motor fast through microthermal nitrogen gas and carbon dioxide, its inside oxygen content of synchronous quick reduction, and then realize quick explosion-proof emergency treatment, the security that improves the motor.

Drawings

These and other features of the present disclosure will be more readily understood from the detailed description of the various aspects of the present disclosure taken in conjunction with the accompanying drawings that depict various embodiments of the disclosure, in which:

FIG. 1 is a schematic perspective view of an explosion-proof electric machine according to the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a schematic perspective view of the circulating cooling mechanism of the present invention;

FIG. 5 is a schematic view of a first partial body structure according to the present invention;

FIG. 6 is a schematic view of a second partial body structure according to the present invention;

FIG. 7 is a schematic perspective view of the heat dissipation and drainage mechanism of the present invention;

FIG. 8 is a schematic view of a first partial body structure of the heat dissipation and drainage mechanism of the present invention;

FIG. 9 is a schematic view of a second partial structure of the heat dissipation and flow guiding mechanism of the present invention;

fig. 10 is a schematic perspective view of a third part of the heat dissipation and drainage mechanism of the present invention;

FIG. 11 is an enlarged view of region A of the heat dissipation and flow directing mechanism of the present invention;

FIG. 12 is a schematic perspective view of the quick explosion-proof mechanism of the present invention;

fig. 13 is a cross-sectional view of the rapid explosion prevention mechanism of the present invention.

The meaning of the reference symbols in the figures: 1-outer shell, 2-end cover, 3-main shaft, 4-inner shell, 5-rotor, 501-bearing, 201-liquid inlet pipe, 202-connecting pipe, 203-circulator, 204-spacer block, 205-circulating pipe, 206-liquid outlet pipe, 301-external gear ring, 302-first flat gear, 303-first connecting shaft, 304-second flat gear, 305-second connecting shaft, 306-internal gear ring, 307-heat dissipation fan, 308-first guide plate, 309-wing air guide group, 3010-second guide plate, 3011-sealing frame, 3012-annular pipe, 3013-air outlet pipe, 401-hollow air storage ring, 402-L-shaped hollow plate, 403-square pipe, 404-elastic part, 405-baffle plate and 40501-air outlet.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-13, an explosion-proof motor comprises an outer shell 1, an end cover 2, a main shaft 3, an inner shell 4 and a rotor 5; the left side and the right side of the shell 1 are respectively connected with an end cover 2 through bolts; the inner side of the outer shell 1 is provided with an inner shell 4; a rotor 5 is arranged in the inner shell 4; the rotor 5 is provided with a main shaft 3;

the device also comprises a circulating cooling mechanism, a heat dissipation and drainage mechanism and a quick explosion-proof mechanism; a circulating cooling mechanism is arranged between the outer shell 1 and the inner shell 4; a heat dissipation and drainage mechanism is arranged between the end cover 2 and the shell 1; the heat dissipation and drainage mechanism is connected with the inner shell 4; a quick explosion-proof mechanism is arranged on the end cover 2 through a bolt; the rapid explosion-proof mechanism is in contact with the main shaft 3; the circulating cooling mechanism is in contact with the main shaft 3.

The circulating cooling mechanism comprises a liquid inlet pipe 201, a connecting pipe 202, a circulator 203, a spacer block 204, a circulating pipe 205 and a liquid outlet pipe 206; a liquid inlet pipe 201 is arranged between the outer shell 1 and the inner shell 4, and the left end of the liquid inlet pipe 201 is externally connected with a water inlet pipeline; two circulators 203 which are symmetrical left and right are arranged on the inner shell 4; a partition block 204 is arranged inside each of the two circulators 203, and the two partition blocks 204 respectively partition the insides of the adjacent circulators 203; the right side of the liquid inlet pipe 201 is communicated with a circulator 203 on the right; a connecting pipe 202 is arranged between the outer shell 1 and the inner shell 4; the left side of the connecting pipe 202 is communicated with the left circulator 203; the right side of the connecting pipe 202 is communicated with the circulator 203 on the right side; a circulating pipe 205 is arranged between the outer shell 1 and the inner shell 4; one end of the circulating pipe 205 is communicated with the left circulator 203, and the other end of the circulating pipe penetrates through the shell 1 and is communicated with a liquid outlet pipe 206; the cooling liquid enters the right circulator 203 through the liquid inlet pipe 201, enters the connecting pipe 202 along the internal path of the circulator 203, enters the left circulator 203 from the connecting pipe 202, finally enters the circulating pipe 205 along the internal path of the circulator 203, and finally is discharged from the liquid outlet pipe 206, so that the circulating cooling is realized.

The spacer 204 is located in the middle of the pipe communicating with the circulator 203.

The circulation pipe 205 is provided in successive S-shapes.

The heat dissipation drainage mechanism comprises an outer gear ring 301, a first flat gear 302, a first connecting shaft 303, a second flat gear 304, a second connecting shaft 305, an inner gear ring 306, a heat dissipation fan 307, a first guide plate 308, a wing-shaped air guide group 309, a second guide plate 3010, a sealing frame 3011, a ring-shaped pipe 3012 and an air outlet pipe 3013; an outer gear ring 301 is arranged on the right side of the main shaft 3; the right side of the inner shell 4 is rotatably connected with a plurality of first connecting shafts 303 arranged in an annular array; a first flat gear 302 is fixedly connected to the right side of each of the first connecting shafts 303; a second flat gear 304 is fixedly connected to the left side of each of the first connecting shafts 303; a plurality of first flat gears 302 are all meshed with the outer gear ring 301; a plurality of second connecting shafts 305 arranged in an annular array are rotatably connected to the left side of the inner shell 4; the right sides of the second connecting shafts 305 are fixedly connected with an inner gear ring 306; a plurality of inner gear rings 306 are respectively meshed with the adjacent second flat gears 304; a heat dissipation fan 307 is fixedly connected to the right side of each of the first connecting shafts 303; the left sides of the first connecting shafts 303 are also fixedly connected with a heat radiation fan 307 respectively; the left and right heat radiation fans 307 are symmetrically arranged and in a state of sucking air to the inner side; a plurality of first guide plates 308 are annularly arranged on the left side and the right side of the inner shell 4 respectively; a plurality of second guide plates 3010 are annularly arranged on the left side and the right side of the inner shell 4; the plurality of first baffles 308 and the plurality of second baffles 3010 are arranged in a staggered state; a plurality of wing-shaped air-entraining groups 309 are annularly arranged on the left side and the right side of the inner shell 4, each wing-shaped air-entraining group 309 consists of a plurality of wing-shaped air-entraining blocks, and each wing-shaped air-entraining group 309 is arranged at a position close to the heat-dissipating fan 307; a plurality of sealing frames 3011 are arranged in an annular array between the left sides of the outer shell 1 and the inner shell 4; a plurality of sealing frames 3011 are also arranged in an annular array between the outer shell 1 and the right side of the inner shell 4; the left sealing frames 3011 are respectively located on the right sides of the adjacent heat dissipation fans 307, and the right sealing frames 3011 are respectively located on the left sides of the adjacent heat dissipation fans 307; a ring-shaped pipe 3012 is arranged between the left sides of the outer shell 1 and the inner shell 4; a ring-shaped pipe 3012 is also arranged between the outer shell 1 and the right side of the inner shell 4; the plurality of sealing frames 3011 are communicated with the adjacent annular tubes 3012 through pipelines; two annular tubes 3012 are both communicated with an air outlet pipe 3013, and the two air outlet pipes 3013 are both externally connected with an air release valve; the main shaft 3 rotates to drive the heat dissipation fan 307 to work, the heat dissipation fan 307 dissipates heat inside the motor, and simultaneously, inflammable and explosive gas and dust entering the inside of the motor are synchronously sucked into the air outlet pipe 3013 and led out outwards.

The heat radiation fan 307 is located near the connection portion of the housing 1 and the end cover 2.

The first flow guide plate 308 and the second flow guide plate 3010 are both arranged in an S shape, the first flow guide plate 308 and the second flow guide plate 3010 located on both sides of the heat dissipation fan 307 are symmetrically arranged, and a gas circulation passage is reserved between the first flow guide plate 308 and the inner shell 4 and between the second flow guide plate 3010 and the inner shell 4.

The wing-shaped air-entraining blocks are arranged in an arch shape on the side close to the heat-dissipating fan 307.

The quick explosion-proof mechanism comprises a hollow air storage ring 401, an L-shaped hollow plate 402, a square pipe 403, an elastic piece 404 and a baffle 405; the opposite sides of the two end covers 2 are respectively connected with a hollow air storage ring 401 through bolts; the two hollow air storage rings 401 are respectively communicated with a square pipe 403; an L-shaped hollow plate 402 is fixedly connected to each of the two square pipes 403; an elastic piece 404 is fixedly connected inside each of the two L-shaped hollow plates 402; the lower ends of the two elastic pieces 404 are respectively fixedly connected with a baffle 405; two air outlets 40501 are respectively arranged on the two baffles 405; the two baffles 405 are respectively connected with the adjacent square pipes 403 in a sliding manner; absorb the heat that main shaft 3 work produced through L shape hollow plate 402 for elastic component 404 is stretched, and then makes gas outlet 40501 and square pipe 403 adjust well, and the inside nitrogen gas of hollow gas storage ring 401 and the quick blowout of carbon dioxide carry out quick explosion-proof cooling to motor inside.

The hollow gas storage ring 401 stores a proper amount of mixed gas of nitrogen and carbon dioxide.

An appropriate amount of mercury is stored inside the L-shaped hollow plate 402.

The elastic member 404 is a spring.

When the spindle 3, the inner shell 4 and the rotor 5 are cooled, a cooling liquid input pipe is externally connected through the liquid inlet pipe 201, the liquid outlet pipe 206 is externally connected with a cooling liquid output pipe, the cooling liquid is input into the liquid inlet pipe 201, then input into the right circulator 203 through the liquid inlet pipe 201, because the right circulator 203 is partitioned by the partition block 204, the cooling liquid flows along the inside of the right circulator 203 after entering the right circulator 203, then is discharged from the connecting pipe 202, finally enters the left circulator 203 from the connecting pipe 202, then flows along the inside of the left circulator 203, and finally flows into the circulating pipe 205, because the circulating pipe 205 is annularly wound between the outer shell 1 and the inner shell 4 and is installed on the surface of the inner shell 4, when the cooling liquid flows through the above-mentioned flow path, the cooling liquid flowing through the inside of the two circulators 203 can cool the two bearings 501 inside the rotor 5, and simultaneously cool the contact part of the spindle 3 synchronously, and the circulating pipe 205 which is wound around the surface of the inner shell 4 in an S-shaped manner, the cooling liquid inside the rotor 5 and the spindle 3 and the main shaft 3 are more obviously connected, and the cooling liquid can greatly prolong the contact area of the bearings, thereby greatly increasing the heat absorption temperature of the bearings and the bearings, and the rotor 5, and the dust absorption of the bearing can be prevented, and the heat of the spindle, and the bearing are damaged by the spindle.

In the main shaft 3 in the working process, since flammable and explosive gas and dust can enter the motor from the connection part between the end cover 2 and the housing 1, along with the rotation of the main shaft 3, the main shaft 3 synchronously drives the outer gear ring 301 to rotate, then drives the first flat gear 302 to rotate through the outer gear ring 301, then drives the first connecting shaft 303 to rotate through the first flat gear 302, drives the second flat gear 304 to rotate through the first connecting shaft 303, then drives the inner gear ring 306 to rotate through the second flat gear 304, and further drives the second connecting shaft 305 to rotate through the inner gear ring 306, at this time, the rotation directions of the first connecting shaft 303 and the second connecting shaft 305 are opposite, and further when the first connecting shaft 303 and the second connecting shaft 305 respectively drive the corresponding heat dissipation fans 307 to rotate, the heat dissipation fan 307 on the left side and the heat dissipation fan 307 on the right side are also in reverse rotation, so that the heat dissipation fans 307 on the left side and the right side realize the air suction effect, meanwhile, because the wing-shaped air-entraining group 309 is formed by combining a plurality of wing-shaped air-entraining blocks, and one surface of the wing-shaped air-entraining block, which is close to the heat-dissipating fan 307, is set to be in an arch shape, when the flow rate of the air of the wing-shaped air-entraining block, which is close to one surface of the heat-dissipating fan 307, is accelerated, a corresponding air pressure difference is generated between the lower surface and the upper surface of the wing-shaped air-entraining block, that is, the air pressure of the lower surface of the wing-shaped air-entraining block is large, the air pressure of the upper surface of the wing-shaped air-entraining block is small, so that the hot air between the end cover 2 and the rotor 5 is further sucked out, then the hot air enters the sealing frame 3011, finally enters the ring-shaped tube 3012 from the sealing frame 3011, and finally is discharged from the air outlet tube 3013, thereby realizing the effects of ventilation and heat dissipation, and at the same time of ventilation and heat dissipation, because the heat dissipation fan 307 is located close to the connecting position between the shell 1 and the end cover 2, and the flammable and explosive gas and dust also enter the interior of the motor through the connecting position of the end cover 2, furthermore, when flammable and explosive gas and dust enter, the suction force generated by the heat dissipation fan 307 is utilized, meanwhile, the first guide plate 308 and the second guide plate 3010 guide the flowing of the flammable and explosive gas and dust, namely, after the flammable and explosive gas and dust enter from the connecting part of the outer shell 1 and the end cover 2, the flammable and explosive gas and dust are located in the heat dissipation fan 307 and between the first guide plate 308 and the second guide plate 3010, the suction force generated by the heat dissipation fan 307 enables the flammable and explosive gas and dust to enter the sealing frame 3011 through the gas flowing channel reserved between the first guide plate 308 and the second guide plate 3010 and the inner shell 4, and finally the flammable and explosive gas and dust are discharged together through the gas outlet pipe 3013.

Along with the work of the motor, the temperature of the spindle 3 and the temperature inside the motor both rise, if the temperature inside the motor is too high, the motor is about to reach extreme, inflammable and explosive gas and dust are possibly caused to catch fire and explode, because a proper amount of mercury is stored inside the L-shaped hollow plate 402, when the temperature of the mercury rises, the volume of the mercury synchronously expands, the temperature is higher, the volume expansion is more serious, after the volume of the mercury inside the L-shaped hollow plate 402 expands, the baffle 405 is subjected to a certain downward extrusion force, the baffle 405 gradually descends along with the temperature rise, when the temperature is about to reach extreme, the baffle 405 already descends by a certain height, and the gas outlet 40501 is combined with the square pipe 403 at the moment, so that low-temperature nitrogen and carbon dioxide stored inside the hollow gas storage ring 401 are rapidly released through the square pipe 403, the internal temperature of the motor is rapidly reduced through the low-temperature nitrogen and carbon dioxide, the internal oxygen content of the motor is rapidly reduced synchronously, rapid explosion-proof emergency treatment is realized, and the safety of the motor is improved.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. An explosion-proof motor comprises an outer shell (1), an end cover (2), a main shaft (3), an inner shell (4) and a rotor (5); the left side and the right side of the shell (1) are respectively fixedly connected with an end cover (2); the inner side of the outer shell (1) is provided with an inner shell (4); a rotor (5) is arranged in the inner shell (4); the rotor (5) is provided with a main shaft (3);

it is characterized by also comprising a circulating cooling mechanism, a heat dissipation and drainage mechanism and a quick explosion-proof mechanism; a circulating cooling mechanism for cooling the interior of the motor is arranged between the outer shell (1) and the inner shell (4); a heat dissipation and drainage mechanism which is used for air cooling and heat dissipation and carries out drainage and elimination on inflammable and explosive gas and dust is arranged between the end cover (2) and the shell (1); the heat dissipation and drainage mechanism is connected with the inner shell (4); a quick explosion-proof mechanism for quickly extinguishing and preventing fire inside the motor is arranged on the end cover (2) through bolts; the rapid explosion-proof mechanism is contacted with the main shaft (3); the circulating cooling mechanism is in contact with the main shaft (3).

2. The explosion-proof motor of claim 1, wherein the circulating cooling mechanism comprises a liquid inlet pipe (201), a connecting pipe (202), a circulator (203), a spacer block (204), a circulating pipe (205) and a liquid outlet pipe (206); a liquid inlet pipe (201) is arranged between the outer shell (1) and the inner shell (4), and the left end of the liquid inlet pipe (201) is externally connected with a water inlet pipeline; two circulators (203) which are symmetrical left and right are arranged on the inner shell (4); a spacer block (204) is arranged in each of the two circulators (203), and the two spacer blocks (204) separate the interiors of the adjacent circulators (203) respectively; the right side of the liquid inlet pipe (201) is communicated with a right circulator (203); a connecting pipe (202) is arranged between the outer shell (1) and the inner shell (4); the left side of the connecting pipe (202) is communicated with a circulator (203) on the left side; the right side of the connecting pipe (202) is communicated with a circulator (203) on the right side; a circulating pipe (205) is arranged between the outer shell (1) and the inner shell (4); one end of the circulating pipe (205) is communicated with the left circulator (203), and the other end of the circulating pipe penetrates through the shell (1) and is communicated with a liquid outlet pipe (206).

3. An explosion-proof machine according to claim 2, characterized in that the spacer (204) is located in the middle of the pipe communicating with the circulator (203).

4. An explosion-proof electric machine according to claim 2, characterized in that the circulation tube (205) is arranged in successive S-shapes.

5. The explosion-proof motor according to claim 4, wherein the heat dissipation and flow guiding mechanism comprises an outer gear ring (301), a first flat gear (302), a first connecting shaft (303), a second flat gear (304), a second connecting shaft (305), an inner gear ring (306), a heat dissipation fan (307), a first guide plate (308), a wing-shaped air-entraining group (309), a second guide plate (3010), a sealing frame (3011), a ring-shaped pipe (3012) and an air outlet pipe (3013); an outer gear ring (301) is arranged on the right side of the main shaft (3); the right side of the inner shell (4) is rotatably connected with a plurality of first connecting shafts (303) which are arranged in an annular array; a first flat gear (302) is fixedly connected to the right side of each of the first connecting shafts (303); a second flat gear (304) is fixedly connected to the left side of each of the first connecting shafts (303); a plurality of first flat gears (302) are all meshed with the outer gear ring (301); the left side of the inner shell (4) is rotatably connected with a plurality of second connecting shafts (305) which are arranged in an annular array; the right sides of the second connecting shafts (305) are fixedly connected with an inner gear ring (306) respectively; a plurality of internal gear rings (306) are respectively meshed with the adjacent second flat gears (304); the right sides of the first connecting shafts (303) are respectively fixedly connected with a heat dissipation fan (307); the left sides of the first connecting shafts (303) are respectively fixedly connected with a heat dissipation fan (307); the left and right heat radiation fans (307) are symmetrically arranged and are in a state of sucking air to the inner side; a plurality of first guide plates (308) are annularly arranged on the left side and the right side of the inner shell (4) respectively; a plurality of second guide plates (3010) are respectively arranged on the left side and the right side of the inner shell (4) in an annular mode; the plurality of first guide plates (308) and the plurality of second guide plates (3010) are arranged in a staggered state; a plurality of wing-shaped air-entraining groups (309) are annularly arranged on the left side and the right side of the inner shell (4), each wing-shaped air-entraining group (309) consists of a plurality of wing-shaped air-entraining blocks, and each wing-shaped air-entraining group (309) is arranged at a position close to the heat-radiating fan (307); a plurality of sealing frames (3011) are arranged between the outer shell (1) and the left side of the inner shell (4) in an annular array manner; a plurality of sealing frames (3011) are arranged between the outer shell (1) and the right side of the inner shell (4) in an annular array; the left sealing frames (3011) are respectively positioned at the right sides of the adjacent heat dissipation fans (307), and the right sealing frames (3011) are respectively positioned at the left sides of the adjacent heat dissipation fans (307); an annular pipe (3012) is arranged between the outer shell (1) and the left side of the inner shell (4); an annular pipe (3012) is arranged between the outer shell (1) and the right side of the inner shell (4); the sealing frames (3011) are communicated with the adjacent annular tubes (3012) by pipelines; two annular pipes (3012) are all connected with an air outlet pipe (3013), and two air outlet pipes (3013) are all externally connected with an air release valve.

6. An explosion-proof electric machine according to claim 5, characterized in that the first flow guide plate (308) and the second flow guide plate (3010) are both arranged in an S shape, the first flow guide plate (308) and the second flow guide plate (3010) on both sides of the heat dissipation fan (307) are symmetrically arranged, and a gas flow passage is reserved between the first flow guide plate (308) and the inner casing (4) and between the second flow guide plate (3010) and the inner casing (4).

7. Explosion-proof electrical machine according to claim 6, characterized in that the wing-shaped air-guiding block is arranged in a cambered shape on the side close to the heat-dissipating fan (307).

8. An explosion-proof machine according to claim 6, characterized in that the quick explosion-proof mechanism comprises a hollow air ring (401), an L-shaped hollow plate (402), a square tube (403), an elastic member (404) and a baffle plate (405); two opposite sides of the two end covers (2) are respectively fixedly connected with a hollow air storage ring (401); the two hollow air storage rings (401) are respectively communicated with a square pipe (403); an L-shaped hollow plate (402) is fixedly connected to each of the two square pipes (403); an elastic piece (404) is fixedly connected inside each L-shaped hollow plate (402); the lower ends of the two elastic pieces (404) are fixedly connected with a baffle (405) respectively; two air outlets (40501) are respectively arranged on the two baffles (405); the two baffles (405) are respectively connected with the adjacent square pipes (403) in a sliding way.

9. An explosion-proof electrical machine according to claim 8, wherein a suitable amount of a mixture of nitrogen and carbon dioxide is stored inside the hollow gas containment ring (401).

10. An explosion-proof electrical machine as claimed in claim 8, characterized in that the L-shaped hollow plate (402) contains a suitable amount of mercury inside.