CN116345773B - Dust gas composite explosion-proof motor - Google Patents
Dust gas composite explosion-proof motor Download PDFInfo
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- CN116345773B CN116345773B CN202310594404.7A CN202310594404A CN116345773B CN 116345773 B CN116345773 B CN 116345773B CN 202310594404 A CN202310594404 A CN 202310594404A CN 116345773 B CN116345773 B CN 116345773B
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- Prior art keywords
- explosion
- proof
- reset
- motor shaft
- proof shell
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- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000000428 dust Substances 0.000 title claims description 32
- 238000004880 explosion Methods 0.000 claims abstract description 63
- 230000009471 action Effects 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims description 27
- 230000000694 effects Effects 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 8
- 230000007480 spreading Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 26
- 230000004888 barrier function Effects 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 9
- 238000005192 partition Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to the technical field of explosion-proof motors, in particular to a dust-gas composite explosion-proof motor, which comprises an explosion-proof shell, a motor shaft and an explosion-proof shell, wherein the explosion-proof shell is connected to one end of the explosion-proof shell, an explosion-proof assembly, a control assembly and a driving rod are arranged in the explosion-proof shell, the explosion-proof assembly comprises a plurality of baffle plates and a plurality of first elastic pieces, the baffle plates can be spliced to form an annular structure sleeved on the motor shaft, the baffle plates are slidably connected to the explosion-proof shell, and the first elastic pieces drive the baffle plates to move towards the direction close to the motor shaft; the control assembly applies resistance to the baffle plate, so that the first elastic piece is compressed, the driving rod pushes the control assembly to leave the baffle plate under the action of explosion waves, the baffle plate is spliced to form an annular lock outside a motor shaft under the action of the first elastic piece, explosion flames are blocked in the explosion-proof shell, the explosion flames are effectively blocked from spreading to the outside, and the explosion is prevented from being caused by the contact of the flames with external explosive powder and gas.
Description
Technical Field
The invention relates to the technical field of explosion-proof motors, in particular to a dust-gas composite explosion-proof motor.
Background
The explosion-proof motor is a motor which can be used in flammable and explosive places and is mainly used in coal mines, petroleum and natural gas, petrochemical industry and chemical industry. In addition, the method is widely applied to the departments of textile, metallurgy, urban fuel gas, traffic, grain and oil processing, papermaking, medicine and the like.
There are two common explosion-proof measures for explosion-proof motors: one such method is to use an explosion-proof enclosure to isolate the electrical components that may generate sparks, arcs and dangerous temperatures from the surrounding explosive gas mixture, which is not sealed, and the surrounding explosive gas mixture may enter the interior of the motor through the interface gaps of the components of the enclosure, and may explode when in contact with ignition sources such as sparks, arcs, dangerous high temperatures, etc. within the enclosure, where the explosion-proof enclosure of the motor is not damaged or deformed, but the surrounding explosive gas mixture cannot be ignited when the explosion flame or hot gas passes out through the explosion-proof interface gaps. One is to use a V-ring or a skeleton oil seal as a seal in the shaft penetration to isolate the surrounding explosive dust from the gas for explosion protection.
Aiming at the related technology, in the first explosion-proof measure, when explosion flame or hot gas passes out through the gap of the explosion-proof surface, the effect of cooling and flameout is achieved by means of the gap and the meshing length, the precision requirement on the explosion-proof surface is relatively high, and the explosion-proof surface can be corroded or cracked or pit due to the complex use environment of the motor, so that the explosion-proof effect can be influenced; in the second explosion-proof measure, the oil seal has poor pressure bearing capacity, and can deform under the action of internal pressure, so that the phenomenon that the bearing leaks oil to the outside is very easy to occur, and the explosion-proof performance of the motor is influenced.
Disclosure of Invention
Therefore, the invention provides the dust-gas composite explosion-proof motor so as to improve the explosion-proof effect of the motor.
The technical scheme of the invention is as follows:
the utility model provides a dust gas compound explosion-proof motor, includes explosion-proof housing and motor shaft, still includes:
the explosion-proof shell is connected to one end of the explosion-proof shell, the motor shaft is arranged in the explosion-proof shell, and one end of the motor shaft penetrates through the explosion-proof shell;
the explosion-proof assembly comprises a plurality of baffle plates and a first elastic piece, wherein the baffle plates are of a fan-shaped structure, the baffle plates can be spliced to form an annular structure sleeved on a motor shaft, the baffle plates are slidably connected to the explosion-proof shell, the sliding direction of the baffle plates is parallel to the radial direction of the motor shaft, and the first elastic piece drives the baffle plates to move towards the direction close to the motor shaft;
the control assembly comprises a control ring, a second elastic piece and a magnet, wherein the control ring is slidably connected to the explosion-proof shell, the sliding direction of the control ring is parallel to the axial direction of the motor shaft, when the baffle plate is positioned at a position far away from the motor shaft, the control ring is positioned at one side of the baffle plate close to the motor shaft, the second elastic piece drives the control ring to move in a direction far away from the explosion-proof shell, the magnet is fixedly connected to the explosion-proof shell, the magnet is in adsorption fit with the control ring, and the magnet is positioned at one side of the baffle plate close to the explosion-proof shell;
the driving rod is connected to the explosion-proof shell in a sliding mode, the sliding direction of the driving rod is parallel to the sliding direction of the control ring, the driving rod is located on one side, close to the explosion-proof shell, of the control ring, and can move towards the direction, close to the control ring, under the action of explosion impact force in the explosion-proof shell and push the control ring to be separated from the magnet.
Through adopting above-mentioned technical scheme, in the normal use of motor, control ring and magnet absorption cooperation, the second elastic component is stretched, and magnet is greater than the elasticity of second elastic component to the suction of control ring, and the baffle is located the control ring and keeps away from one side of motor shaft, and the control ring is fixed a position the baffle, and first elastic component is compressed, and the motor shaft can not have the normal work of additional friction.
When explosion happens in the explosion-proof shell, the impact force of the explosion blows out from a gap between a motor shaft and the explosion-proof shell, the driving rod is pushed to move by the impact force, the control ring is pushed to move by the driving rod, so that the control ring is separated from the magnet, then the control ring moves away from the baffle plate under the action of the second elastic piece, after the positioning action of the control ring is lost, the baffle plate moves to be abutted with the motor shaft in the direction close to the motor shaft under the action of the first elastic piece, a plurality of baffle plates are spliced into a ring to be locked outside the motor shaft, the gap between the motor shaft and the explosion-proof shell is blocked, explosion flame or hot gas is prevented from being transmitted outwards, flame caused by explosion inside the motor is prevented from spreading outside the motor, and explosion and combustion of external gas or dust are caused.
Further, a fire extinguishing air bag and a pricker are arranged in the explosion-proof shell, fire extinguishing air and fire extinguishing powder mixture is filled in the fire extinguishing air bag, and the fire extinguishing air bag is arranged on one side, close to the explosion-proof shell, of the baffle plate; the puncture needle is positioned on one side of the fire-extinguishing air bag far away from the baffle plate, the puncture needle is slidably connected with the explosion-proof shell, the sliding direction of the puncture needle is parallel to the sliding direction of the driving rod, and the puncture needle can move towards the direction close to the fire-extinguishing air bag under the action of explosion impact force in the explosion-proof shell and puncture the fire-extinguishing air bag.
By adopting the technical scheme, when explosion occurs in the explosion-proof shell, the explosion impact force pushes the puncture needle to puncture the fire-extinguishing air bag, and fire-extinguishing gas and fire-extinguishing powder in the fire-extinguishing air bag are sprayed out to extinguish flame in the explosion-proof shell.
Further, a connecting net is slidably connected in the explosion-proof shell, the sliding direction of the connecting net is parallel to the sliding direction of the control ring, the connecting net is positioned at one side of the pricking pin far away from the fire extinguishing air bag, and the driving rod and the pricking pin are fixedly connected to the connecting net; the connecting net can move under the action of explosion impact force in the explosion-proof shell, so that the driving rod pushes the control ring to be separated from the magnet and the puncture needle punctures the air bag.
Through adopting above-mentioned technical scheme, under the impact effect of blast wave, the separation effect of baffle and the fire extinguishing effect of fire extinguishing bag exert simultaneously, not only block up explosion flame in the flameproof shell, can also carry out quick automatic fire extinguishing to the flame, avoid flame to store up and the temperature continuously risees in the flameproof shell.
Further, the explosion-proof shell is detachably connected to the explosion-proof shell, and a reset assembly for resetting the baffle plate is arranged on the explosion-proof shell;
the reset assembly comprises a reset ring and a plurality of reset blocks, the reset blocks are correspondingly and fixedly connected to one side of each baffle plate far away from the explosion-proof housing, and the side surface of each reset block, which is close to the motor shaft, gradually extends towards the direction far away from the motor shaft along the direction far away from the baffle plate; the reset ring is slidably connected to the explosion-proof shell, is positioned on one side of the reset block, which is far away from the baffle plate, and gradually extends to the direction, which is close to the motor shaft, along the direction, which is close to the baffle plate; when the baffle plate is abutted with the motor shaft, the inclined surface of the outer side wall of the reset ring can be abutted with the inclined side wall of the reset block when the reset ring moves in the direction close to the baffle plate.
Through adopting above-mentioned technical scheme, if the inside part of explosion-proof shell damages after the explosion, and the flameproof shell can also continue to use, can tear down the flameproof shell from the explosion-proof shell, install and continue to use on another explosion-proof shell, when the flameproof shell after the explosion takes place is reused, need reset the baffle. The drive reset ring moves to the direction that is close to the baffle plate, the inclined outer wall of the drive ring is in butt joint with the inclined side wall of the reset block, along with the movement of the drive ring, the reset block gradually moves to the direction far away from a motor shaft under the guiding effect of an inclined plane, and the first elastic piece is compressed to realize the reset of the baffle plate.
Further, reset assembly still includes the reset lever, and reset lever fixed connection is in reset ring, and reset lever promotes the control ring and resets to the direction that is close to magnet.
Through adopting above-mentioned technical scheme, the reset ring utilizes bevel effect drive baffle to remove earlier in the removal in-process, when the baffle moved to the position that is located control ring and keeps away from motor shaft one side, reset lever and control ring contact, the reset ring continues to remove, the baffle also continues to remove under the effect of reset ring, the control ring moves to the direction that is close to magnet under the effect of reset lever, until magnet and control ring adsorb, then the reverse removal reset of drive reset ring, lose the blocking effect of reset ring this moment, the baffle can remove to with the control ring butt, accomplish the double reset of baffle and control ring, it is simple swift.
Further, a dust removing fan blade is arranged on the motor shaft and is positioned in the explosion-proof shell, and the dust removing fan blade is positioned on one side of the connecting net, which is far away from the fire extinguishing air bag.
Because there is the space between motor shaft and explosion proof shell and the explosion proof shell, external dust and gas can get into the explosion proof shell through the space and initiate the explosion, through adopting above-mentioned technical scheme, dust removal flabellum rotates under the effect of motor shaft, produce the continuous blowout outside the explosion proof shell of air current, the existence of this air current can isolate most dust and gas, make it can not get into in the explosion proof shell, and overall structure and motor shaft do not have direct contact, sealing part does not have components such as rubber, the rubber that leads to because the motor high-speed rotation is heated, ageing, deformation and phenomenon such as drop can not appear, the security and the life of using have been improved.
Further, be provided with the mounting bracket of fixed fire extinguishing air bag in the flameproof housing, be provided with the third elastic component between mounting bracket and the connection net.
Through adopting above-mentioned technical scheme, the third elastic component can guarantee under the condition that no explosion takes place, the safe distance between pjncture needle and the fire extinguishing air bag, avoids the pjncture needle to remove to puncture the fire extinguishing air bag under the effect of dust removal flabellum.
Further, a plurality of groups of radiating fan blades and driving components for driving the radiating fan blades to rotate are arranged in the explosion-proof shell;
the driving assembly comprises a driving gear, a plurality of driven gears and a plurality of driving shafts, wherein the driving gear is coaxially and fixedly connected with the motor shaft, the driven gears are meshed with the driving gears, and the driving shafts are connected with the driven gears; the driven gear is provided with a plurality of along driving gear circumference direction, and the drive shaft rotates to be connected in explosion-proof shell, and the axis of rotation of drive shaft is on a parallel with the motor shaft axis, and the radiator fan leaf is connected in every drive shaft.
When the motor works, a large amount of heat is generated, the heat gathers in the explosion-proof shell to enable the temperature in the explosion-proof shell to rise, and the explosion is easily caused by the too high temperature; because the distance between the inner wall of the explosion-proof shell and the motor stator is smaller, only smaller heat dissipation fan blades can be used, and the suction force generated by the small fan heat fan blades is relatively smaller, so that a plurality of groups of heat dissipation fan blades are arranged, and the heat dissipation effect is improved.
Further, the driving shaft is a reciprocating screw, the heat dissipation fan blade is connected to the reciprocating screw in a sliding manner, the sliding direction of the heat dissipation fan blade is parallel to the axis of the reciprocating screw, the heat dissipation fan blade is fixedly connected with a positioning block, a sliding groove is formed in the reciprocating screw, and the sliding block is arranged in the sliding groove; the anti-explosion cooling device comprises a plurality of cooling fan blades, and is characterized in that sliding blocks are further arranged on the reciprocating screw rods, two sliding blocks are arranged on each reciprocating screw rod, cooling fan blades are arranged between the two sliding blocks, the sliding blocks are in threaded connection with the reciprocating screw rods, guide blocks are fixedly connected to the sliding blocks, guide grooves are formed in the inner walls of the anti-explosion shells, the guide blocks are arranged in the guide grooves, and a lubricating layer is arranged between each sliding block and each cooling fan blade.
By adopting the technical scheme, the reciprocating screw rod rotates, and the sliding block reciprocates along the reciprocating screw rod due to the threaded connection relation between the sliding block and the driving shaft and the guiding action of the guide block and the sliding block; under the action of the positioning block, the heat dissipation fan blade rotates along with the reciprocating screw rod, and meanwhile, the sliding block pushes the heat dissipation fan blade to move on the reciprocating screw rod, so that the heat dissipation fan blade rotates in the explosion-proof shell and moves in a reciprocating manner, the action range of the heat dissipation fan blade is enlarged, and the heat dissipation effect is improved.
The working principle and the beneficial effects of the invention are as follows:
when explosion occurs in the explosion-proof shell, the explosion wave impacts the driving rod to move, so that the driving rod occupies the space in the magnetic attraction groove, the control ring is separated from the magnet, the control ring is contracted into the control groove under the action of the second elastic piece, at the moment, under the action of the first elastic piece, the four baffle plates are spliced to form an annular lock outside the motor shaft, gaps between the explosion-proof shell and the motor shaft are filled, explosion flames are blocked in the explosion-proof shell, the explosion flames are effectively prevented from spreading to the outside, and the explosion is prevented from being caused again by the contact of the flames with external explosive powder and gas.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present application;
fig. 2 is a sectional view showing an internal structure of the flameproof housing;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of the relationship between the baffle plate and the motor shaft before an explosion occurs;
FIG. 5 is a schematic view of the relationship between the barrier plate and the motor shaft after an explosion;
FIG. 6 is a schematic diagram showing the relationship between the drive rod and the lancet;
FIG. 7 is a schematic diagram showing the structure of a control assembly;
FIG. 8 is a schematic diagram showing the positional relationship of the reset lever and the control ring;
FIG. 9 is a schematic diagram showing the structure of a dust removing fan blade;
FIG. 10 is a schematic diagram showing a heat dissipating fan blade;
fig. 11 is a partial enlarged view at B in fig. 10.
In the figure: 1. an explosion-proof housing; 11. a rotor; 12. a stator; 13. a motor shaft; 14. a fixing ring; 15. radiating fan blades; 16. a guide groove; 2. an explosion-proof shell; 21. a barrier groove; 22. a control groove; 23. a magnetic attraction groove; 24. a connecting net; 241. a driving rod; 242. a needle; 25. a mounting frame; 251. a fire extinguishing air bag; 252. a third elastic member; 26. a moving groove; 27. a reset groove; 28. a communication groove; 3. an explosion-proof assembly; 31. a baffle plate; 32. a first elastic member; 4. a control assembly; 41. a control loop; 42. a second elastic member; 43. a magnet; 5. a reset assembly; 51. a reset ring; 511. a mounting groove; 52. a reset block; 53. a reset lever; 6. dust removing fan blades; 7. a drive assembly; 71. a drive gear; 72. a driven gear; 73. a reciprocating screw; 731. a chute; 732. a slide block; 7321. and a guide block.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, this embodiment provides a dust gas composite explosion-proof motor, including explosion-proof housing 1 and explosion-proof housing 2, install rotor 11 in the explosion-proof housing 1, stator 12 and motor shaft 13, the both ends rotation of motor shaft 13 are connected in explosion-proof housing 1's both ends, explosion-proof housing 2 connects the one end at explosion-proof housing 1, motor shaft 13 one end passes explosion-proof housing 2, be provided with explosion-proof component 3 in the explosion-proof housing 2, intercept explosion wave in explosion-proof housing 2, prevent the flame diffusion that the inside explosion of motor arouses to outside the motor, cause explosion, the burning of external gas or dust.
Referring to fig. 2 to 5, the flameproof assembly 3 includes a plurality of groups of partition boards and a first elastic member 32, the inner wall of the flameproof housing 2 is provided with a blocking groove 21, the group of partition boards are arranged in the blocking groove 21, and the group of partition boards are slidably connected to the flameproof housing 2, the sliding direction of the group of partition boards is parallel to the radial direction of the motor shaft 13, four group of partition boards are arranged in this embodiment, the group of partition boards are in a fan-shaped structure, the four group of partition boards can be spliced to form an annular structure and sleeved on the motor shaft 13, the first elastic member 32 is a spring, and the first elastic member 32 is fixedly connected between one side, far away from the motor shaft 13, of the blocking board 31 and the inner wall of the blocking groove 21.
Referring to fig. 2-5, a control assembly 4 for positioning the barrier plate 31 is arranged in the flameproof shell 2, the control assembly 4 comprises a control ring 41, a second elastic member 42 and a magnet 43, the control ring 41 is slidably connected to the flameproof shell 2, the sliding direction of the control ring 41 is parallel to the axial direction of the motor shaft 13, a control groove 22 is formed in the flameproof shell 2, the control ring 41 is positioned in the control groove 22, the control groove 22 is positioned on one side of the barrier groove 21 far away from the flameproof shell 1, the control groove 22 is communicated with the barrier groove 21, the second elastic member 42 is a spring, and the second elastic member 42 is fixedly connected between one side of the control ring 41 far away from the barrier groove 21 and the inner wall of the control groove 22; the blocking groove 21 is close to the position of one side of the explosion-proof housing 1 corresponding to the control groove 22, the magnetic attraction groove 23 is communicated with the blocking groove 21, the magnet 43 is fixedly connected in the magnetic attraction groove 23, and the magnet 43 is in adsorption fit with the control ring 41. Before explosion, one end of the control ring 41 is inserted into the magnetic attraction groove 23 to be attracted by the magnet 43, the second elastic piece 42 is stretched, the baffle plate 31 is abutted with one side, away from the motor shaft 13, of the control ring 41, so that the baffle plate 31 is completely positioned in the baffle groove 21, and the first elastic piece 32 is compressed to ensure friction-free rotation of the motor shaft 13.
Referring to fig. 2 and 6, a connection net 24 is slidably connected in the flameproof housing 2, the sliding direction of the connection net 24 is parallel to the axial direction of the motor shaft 13, the connection net 24 is located at one side of the magnet 43 close to the flameproof housing 1, a driving rod 241 is fixedly connected to the connection net 24, the driving rod 241 is located at one side of the connection net 24 close to the magnet 43, and a plurality of driving rods 241 are arranged along the circumferential direction of the motor shaft 13. Before explosion, the driving rod 241 is located outside the magnetic attraction groove 23, after explosion, the connecting net 24 is driven by the blast wave of the explosion to drive the driving rod 241 to move, the driving rod 241 extrudes the driving ring into the magnetic attraction groove 23, the control ring 41 moves into the control groove 22 under the action of the second elastic piece 42, meanwhile, the blocking plate 31 is ejected under the action of the first elastic piece 32 to be spliced into a ring to be locked outside the motor shaft 13, the gap between the motor shaft 13 and the explosion-proof shell 2 is blocked, explosion flame or hot gas is prevented from being transmitted outwards, and flame caused by the explosion inside the motor is prevented from spreading outside the motor, so that the explosion or dust is caused to be burnt.
Referring to fig. 2 and 6, a fire-extinguishing air bag 251 and a puncture needle 242 are further arranged in the flameproof housing 2, a mounting frame 25 is fixedly connected in the flameproof housing 2, the mounting frame 25 is of an L-shaped annular structure, the mounting frame 25 is located between the connecting net 24 and the baffle plate 31, a driving rod 241 penetrates through a gap between the mounting frame 25 and the motor shaft 13, the fire-extinguishing air bag 251 is arranged on the mounting frame 25, fire-extinguishing air bag 251 is filled with fire-extinguishing gas and fire-extinguishing powder, the fire-extinguishing gas in the embodiment is carbon dioxide gas, and the fire-extinguishing powder is dry powder fire-extinguishing agent. The puncture needle 242 is fixedly connected to one side of the connecting net 24, which is close to the mounting frame 25, a third elastic piece 252 is arranged between the connecting net 24 and the mounting frame 25, the third elastic piece 252 is a spring, one end of the third elastic piece 252 is fixedly connected to the mounting frame 25, and the other end of the third elastic piece 252 is abutted against the connecting net 24. After explosion, the connecting net 24 is pushed to move by the explosion wave, the connecting net 24 drives the puncture needles 242 and the driving rod 241 to move, so that when the puncture needles 242 puncture the fire-extinguishing air bags 251, the driving rod 241 pushes the control ring 41 out of the magnetic attraction grooves 23, the barrier plate 31 blocks the explosion flame from being transmitted outwards, and meanwhile, the fire-extinguishing gas and fire-extinguishing powder in the fire-extinguishing air bags 251 extinguish the flame in the explosion-proof shell 2.
Referring to fig. 3 and fig. 7-8, a fixing ring 14 is fixedly connected to the outside of the explosion-proof housing 1, and the explosion-proof housing 2 is in threaded connection with the fixing ring 14, so that the explosion-proof housing 2 is detachably connected with the explosion-proof housing 1. The explosion-proof housing 2 is internally provided with a reset component 5 for resetting the baffle plates 31, the reset component 5 comprises a reset rod 53, a plurality of reset blocks 52 and a plurality of reset rods 53, the reset blocks 52 are fixedly connected to one side of the baffle plates 31 far away from the explosion-proof housing 1, each baffle plate 31 is connected with one reset block 52, the side wall, close to the motor shaft 13, of the reset block 52 extends gradually in the direction far away from the motor shaft 13 along the direction far away from the baffle plates 31, the explosion-proof housing 2 is provided with a moving groove 26, the reset blocks 52 are positioned in the moving groove 26, and the moving groove 26 is communicated with the baffle groove 21; the reset ring 51 is slidably connected to the explosion-proof housing 2, the sliding direction of the reset ring 51 is parallel to the axial direction of the motor shaft 13, a reset groove 27 is formed in the explosion-proof housing 2, the reset groove 27 is positioned on one side of the control groove 22 away from the motor shaft 13, the reset groove 27 is communicated with the moving groove 26, the reset ring 51 is positioned on one side of the reset block 52 away from the baffle plate 31, the outer side wall of the reset ring 51 gradually extends towards the direction close to the motor shaft 13 along the direction close to the baffle plate 31, and the inclined outer wall of the reset ring 51 is parallel to the inclined side wall of the reset block 52; the explosion-proof housing 2 is provided with a communication groove 28, the communication groove 28 extends along the axial direction of the motor shaft 13, the communication groove 28 is communicated with the reset groove 27 and the control groove 22, the inner wall of the reset ring 51 is provided with a mounting groove 511, the mounting groove 511 is a T-shaped groove, one end of the reset rod 53 is T-shaped and is positioned in the mounting groove 511, and the other end of the reset rod 53 penetrates through the communication groove 28 and extends into the control groove 22.
After explosion, the explosion-proof shell 2 is detached from the explosion-proof shell 1, the reset ring 51 is rotated to enable the reset ring 51 to move towards the direction close to the baffle plate 31, the inclined outer wall of the driving ring is abutted against the inclined side wall of the reset block 52, the reset block 52 gradually moves towards the direction far away from the motor shaft 13 under the guiding action of the inclined surface along with the movement of the driving ring, the reset block 52 drives the baffle plate 31 to move, when the baffle plate 31 moves to the position, located on the side, far away from the motor shaft 13, of the control ring 41, the reset rod 53 is in contact with the control ring 41, the reset ring 51 continues to move, the baffle plate 31 also continues to move under the action of the reset ring 51, the control ring 41 moves towards the direction close to the magnet 43 under the action of the reset rod 53 until the magnet 43 is adsorbed by the control ring 41, then the reset ring 51 is driven to reversely move and reset, the blocking action of the reset ring 51 is lost, and the baffle plate 31 moves to be abutted against the control ring 41, and reset of the baffle plate 31 and the control ring 41 is completed. Then the connecting net 24 is removed, a new fire-extinguishing air bag 251 is replaced, then the connecting net 24 is clamped into the flameproof shell 2, and the flameproof shell 2 is connected to the new flameproof shell 1 for continuous use.
Referring to fig. 2 and 9, the flameproof housing 2 is internally provided with a dust removing fan blade 6, the dust removing fan blade 6 is fixedly connected to the motor shaft 13, the dust removing fan blade 6 is positioned on one side of the connecting net 24 away from the mounting frame 25, and the dust removing fan blade 6 rotates along with the motor shaft 13, so that external dust and gas can be prevented from entering the flameproof housing 2. The inner wall of the position, close to the baffle plate 31, in the flameproof shell is an inclined inner wall inclined towards the direction, close to the motor shaft 13, of the inner wall, so that the air flow generated by the dust removing fan blades 6 is guided, and external dust and air are prevented from entering the flameproof shell 2.
Referring to fig. 9-11, a plurality of heat dissipation fan blades 15 and a driving component 7 for driving the heat dissipation fan blades 15 to rotate are arranged in the explosion-proof housing 1, the driving component 7 comprises a driving gear 71, a driven gear 72 and a reciprocating screw 73, the driving gear 71 is coaxial with a motor shaft 13 and is fixedly connected with the motor shaft 13, the driving gear 71 is positioned in the explosion-proof housing 2, four driven gears 72 are uniformly arranged along the circumferential direction of the driving gear 71, the driven gears 72 are meshed with the driving gear 71, the reciprocating screw 73 is uniformly arranged along the circumferential direction of the motor shaft 13, the reciprocating screw 73 is rotationally connected with the explosion-proof housing 1, the rotation axis of the reciprocating screw 73 is parallel to the axis of the motor shaft 13, a chute 731 extending along the axis direction of the reciprocating screw 73 is formed on the reciprocating screw 73, the heat dissipation fan blades 15 are fixedly connected with the reciprocating screw 73, and positioning blocks (not shown in the drawings) are fixedly connected with the heat dissipation fan blades 15, and the positioning blocks are positioned in the chute 731; the reciprocating screw rods 73 are also connected with sliding blocks 732 in a threaded manner, each reciprocating screw rod 73 is connected with two sliding blocks 732, the heat dissipation fan blades 15 are positioned between the two sliding blocks 732, the sliding blocks 732 are connected with guide blocks 7321, the inner wall of the explosion-proof housing 1 is provided with guide grooves 16, and the guide blocks 7321 are arranged in the guide grooves 16; a lubrication layer (not shown in the figure) is fixedly connected between the heat dissipation blade 15 and the sliders 732 on both sides, and the lubrication layer is made of polytetrafluoroethylene. The motor shaft 13 drives the driving gear 71 to rotate, the driving gear 71 drives the reciprocating screw 73 to rotate through the driven gear 72, because the sliding block 732 is in threaded connection with the reciprocating screw 73 and is provided with the guide block 7321 for guiding, the sliding block 732 reciprocates on the reciprocating screw 73, and the two sliding blocks 732 clamp the heat dissipation fan blades 15, so that the heat dissipation fan blades 15 reciprocate on the reciprocating screw 73, and meanwhile, under the action of the positioning block, the heat dissipation fan blades 15 rotate along with the reciprocating screw 73, hot air in the explosion-proof housing 1 is transmitted into the explosion-proof housing 2 from the inside of the explosion-proof housing 2, and then the dust removal fan blades 6 in the explosion-proof housing 2 are transmitted to the outside, so that accumulation of heat in the explosion-proof housing 1 is reduced.
The implementation principle of the embodiment of the application is as follows: when the motor works normally, the motor shaft 13 is not contacted with the explosion-proof shell 1 and the motor shaft 13 is not contacted with the explosion-proof shell 2, so that the motor shaft 13 is ensured to rotate normally, the dust removing fan blades 6 rotate with the driving gear 71 along with the rotation of the motor shaft 13, the dust removing fan blades 6 rotate to generate outward air flow, and external dust and air are prevented from entering the explosion-proof shell 2, so that the probability of explosion is reduced; the driving gear 71 drives the reciprocating screw 73 to rotate through the driven gear 72, the reciprocating screw 73 drives the heat dissipation fan blade 15 to rotate, meanwhile, the two sliding blocks 732 clamp the heat dissipation fan blade 15 to reciprocate on the reciprocating screw 73, the heat dissipation fan blade 15 omnidirectionally transfers hot air in the explosion-proof housing 1 into the explosion-proof housing 2, and then the dust removal fan blade 6 transfers heat to the outside, so that heat accumulation in the motor is reduced.
When explosion occurs in the explosion-proof housing 1, the explosion wave impacts the connecting net 24, the connecting net 24 drives the pricker 242 and the driving rod 241 to move, the driving rod 241 occupies the space in the magnetic attraction groove 23, so that the control ring 41 is separated from the magnet 43, the control ring 41 is contracted into the control groove 22 under the action of the second elastic piece 42, at the moment, under the action of the first elastic piece 32, the barrier plate 31 pops out of the barrier groove 21, the four barrier plates 31 are spliced to form a ring to be locked outside the motor shaft 13, the gap between the explosion-proof housing 2 and the motor shaft 13 is filled, and the explosion flame is blocked in the explosion-proof housing 2; the puncture needle 242 punctures the fire-extinguishing air bag 251, fire-extinguishing gas and fire-extinguishing powder in the fire-extinguishing air bag 251 are sprayed out to extinguish the explosion flame in the flameproof shell 2, effectively prevent the explosion flame from spreading to the outside, and rapidly extinguish the flame, thereby avoiding the explosion caused by the contact of the flame with external explosive powder and gas.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The utility model provides a dust gas compound explosion-proof motor, includes explosion-proof housing (1) and motor shaft (13), its characterized in that: further comprises:
the explosion-proof device comprises an explosion-proof shell (2), wherein the explosion-proof shell (2) is connected to one end of the explosion-proof shell (1), a motor shaft (13) is arranged in the explosion-proof shell (1), and one end of the motor shaft (13) penetrates through the explosion-proof shell (2);
the explosion-proof assembly (3) comprises a plurality of baffle plates (31) and a plurality of first elastic pieces (32), the baffle plates (31) can be spliced to form an annular structure sleeved on the motor shaft (13), the baffle plates (31) are slidably connected to the explosion-proof shell (2), the sliding direction of the baffle plates (31) is parallel to the radial direction of the motor shaft (13), and the first elastic pieces (32) drive the baffle plates (31) to move towards the direction close to the motor shaft (13);
the control assembly (4) comprises a control ring (41), a second elastic piece (42) and a magnet (43), wherein the control ring (41) is slidably connected to the explosion-proof shell (2), the sliding direction of the control ring (41) is parallel to the axial direction of the motor shaft (13), when the baffle plate (31) is located at a position far away from the motor shaft (13), the control ring (41) is located at one side of the baffle plate (31) close to the motor shaft (13), the second elastic piece (42) drives the control ring (41) to move towards a direction far away from the explosion-proof shell (1), the magnet (43) is fixedly connected to the explosion-proof shell (2), the magnet (43) is in adsorption fit with the control ring (41), and the magnet (43) is located at one side of the baffle plate (31) close to the explosion-proof shell (1);
the driving rod (241), driving rod (241) sliding connection is in flameproof housing (2), and the slip direction of driving rod (241) is on a parallel with the slip direction of control ring (41), and driving rod (241) are located one side that control ring (41) is close to explosion-proof housing (1), and driving rod (241) can be under the effect of explosion impact in explosion-proof housing (1) to the direction that is close to control ring (41) to promote control ring (41) and magnet (43) separation.
2. The dust-gas composite explosion-proof motor according to claim 1, wherein: a fire-extinguishing air bag (251) and a pricking pin (242) are arranged in the explosion-proof shell (2), a fire-extinguishing gas and fire-extinguishing powder mixture is filled in the fire-extinguishing air bag (251), and the fire-extinguishing air bag (251) is arranged on one side, close to the explosion-proof shell (1), of the baffle plate (31); the puncture needle (242) is positioned on one side of the fire-extinguishing air bag (251) far away from the baffle plate (31), the puncture needle (242) is slidably connected to the explosion-proof shell (2), the sliding direction of the puncture needle (242) is parallel to the sliding direction of the driving rod (241), and the puncture needle (242) can move towards the direction close to the fire-extinguishing air bag (251) under the action of explosion impact force in the explosion-proof shell (1) and puncture the fire-extinguishing air bag (251).
3. The dust-gas composite explosion-proof motor according to claim 2, wherein: a connecting net (24) is slidably connected in the explosion-proof shell (2), the sliding direction of the connecting net (24) is parallel to the sliding direction of the control ring (41), the connecting net (24) is positioned on one side of the pricking needle (242) far away from the fire extinguishing air bag (251), and the driving rod (241) and the pricking needle (242) are fixedly connected to the connecting net (24); the connecting net (24) can move under the action of explosion impact force in the explosion-proof shell (1), so that the driving rod (241) pushes the control ring (41) to be separated from the magnet (43) and the puncture needle (242) is completed simultaneously with the puncture of the air bag.
4. The dust-gas composite explosion-proof motor according to claim 1, wherein: the explosion-proof shell (2) is detachably connected to the explosion-proof shell (1), and a reset assembly (5) for resetting the baffle plate (31) is arranged on the explosion-proof shell (2);
the reset assembly (5) comprises a reset ring (51) and a plurality of reset blocks (52), the reset blocks (52) are correspondingly and fixedly connected to one side of each baffle plate (31) far away from the explosion-proof housing (1), and along the direction far away from the baffle plates (31), the side surface of the reset block (52) close to the motor shaft (13) gradually extends towards the direction far away from the motor shaft (13); the reset ring (51) is slidably connected to the explosion-proof shell (2), the reset ring (51) is positioned on one side of the reset block (52) away from the baffle plate (31), and the outer side wall of the reset ring (51) gradually extends towards the direction close to the motor shaft (13) along the direction close to the baffle plate (31); when the baffle plate (31) is abutted against the motor shaft (13), the inclined surface of the outer side wall of the reset ring (51) can be abutted against the inclined side wall of the reset block (52) when the reset ring (51) moves in the direction approaching the baffle plate (31).
5. The dust-gas composite explosion-proof motor according to claim 4, wherein: the reset assembly (5) further comprises a reset rod (53), the reset rod (53) is fixedly connected to the reset ring (51), and the reset rod (53) pushes the control ring (41) to reset towards the direction close to the magnet (43).
6. The dust-gas composite explosion-proof motor according to claim 2, wherein: the motor shaft (13) is provided with a dust removing fan blade (6), the dust removing fan blade (6) is positioned in the explosion-proof shell (2), and the dust removing fan blade (6) is positioned on one side of the connecting net (24) far away from the fire extinguishing air bag (251).
7. The dust-gas composite explosion-proof motor according to claim 5, wherein: the explosion-proof shell (2) is internally provided with a mounting frame (25) for fixing the fire-extinguishing air bag (251), and a third elastic piece (252) is arranged between the mounting frame (25) and the connecting net (24).
8. The dust-gas composite explosion-proof motor according to claim 1, wherein: a plurality of groups of radiating fan blades (15) and a driving assembly (7) for driving the radiating fan blades (15) to rotate are arranged in the explosion-proof shell (1);
the driving assembly (7) comprises a driving gear (71) coaxially connected with the motor shaft (13), a plurality of driven gears (72) meshed with the driving gear (71) and a plurality of driving shafts connected with the driven gears (72); the driven gear (72) is provided with a plurality of driving shafts in the circumferential direction of the driving gear (71), the driving shafts are rotatably connected to the explosion-proof housing (1), the rotation axes of the driving shafts are parallel to the axis of the motor shaft (13), and the heat dissipation fan blades (15) are connected to each driving shaft.
9. The dust-gas composite explosion-proof motor according to claim 8, wherein: the driving shaft is a reciprocating screw (73), the heat dissipation fan blade (15) is connected to the reciprocating screw (73) in a sliding mode, the sliding direction of the heat dissipation fan blade (15) is parallel to the axis of the reciprocating screw (73), the heat dissipation fan blade (15) is fixedly connected with a positioning block, a sliding groove (731) is formed in the reciprocating screw (73), and the positioning block is arranged in the sliding groove (731); the anti-explosion cooling device is characterized in that sliding blocks (732) are further arranged on the reciprocating screw rods (73), two sliding blocks (732) are arranged on each reciprocating screw rod (73), cooling fan blades (15) are arranged between the two sliding blocks (732), the sliding blocks (732) are connected with the reciprocating screw rods (73) in a threaded mode, guide blocks (7321) are fixedly connected to the sliding blocks (732), guide grooves (16) are formed in the inner walls of the anti-explosion shell (1), the guide blocks (7321) are arranged in the guide grooves (16), and a lubricating layer is arranged between the sliding blocks (732) and the cooling fan blades (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310594404.7A CN116345773B (en) | 2023-05-25 | 2023-05-25 | Dust gas composite explosion-proof motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310594404.7A CN116345773B (en) | 2023-05-25 | 2023-05-25 | Dust gas composite explosion-proof motor |
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| CN116345773B true CN116345773B (en) | 2023-07-28 |
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| CN116979739B (en) * | 2023-08-07 | 2024-03-26 | 上海大速科技有限公司 | Flameproof three-phase asynchronous motor with tightness detection function |
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| CN114421687A (en) * | 2022-01-20 | 2022-04-29 | 上海大速科技有限公司 | Explosion-proof motor with high-efficient heat dissipation function |
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| CN201656633U (en) * | 2010-01-27 | 2010-11-24 | 韶关市东逸工贸有限公司 | Self-braking explosion-proof motor |
| CN106253550A (en) * | 2016-08-26 | 2016-12-21 | 陈节庆 | A kind of motor with explosion prevention function |
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