CN117085765A - Cone crusher dust keeper - Google Patents

Abstract

The application relates to the technical field of ore crushing, in particular to a dust-proof device of a cone crusher, which comprises a dust cover arranged on a sealing seat and a blowing mechanism arranged on the dust cover, wherein the sealing seat is provided with a wind path communicated with a main shaft lubrication cavity, the blowing mechanism is arranged on the dust cover, and the blowing mechanism is communicated with the wind path and blows air from the outside into the wind path. The application has the effects of reducing equipment failure rate and running cost.

Description

Cone crusher dust keeper

Technical Field

The application relates to the technical field of ore crushing, in particular to a dust-proof device of a cone crusher.

Background

At present, with the development of mining machinery, the cone crusher slowly moves to the good development trend of the mining machinery, and great development opportunities are met, and because of the special effect and influence of crushing equipment, the requirements on the reliability, the durability and the service life of the crushing equipment are strict, and the development trend of the cone crusher for intelligence is expected. Cone crushers are an advanced high-power, high-crushing-ratio, high-productivity hydraulic crushing. The machine is developed on the basis of digestion and absorption of various types of cone crushing of the international advanced level of 80 s in each country. It is clearly different in design from the structure of conventional cone crushers and concentrates on the main advantages of the types of cone crushers known so far. Is suitable for finely crushing and superfine crushing hard rock, ore, slag, refractory material and the like.

In the prior art, the cone crusher comprises a fixed cone, a rotary swinging movable cone and a frame, wherein a gap is reserved between the fixed cone and the movable cone, and the fixed cone and the movable cone are covered by the frame; the cone crusher further comprises a motor, a transmission assembly, a main shaft and an eccentric shaft sleeve, wherein the main shaft penetrates through the center of the movable cone, the eccentric shaft sleeve is coated on the periphery of the main shaft, the motor is connected with the main shaft through the transmission assembly, and the transmission assembly can be a belt transmission or a coupling; when the cone crusher works, the motor rotates to drive the main shaft to rotate through the belt transmission or the linkage shaft device, and the movable cone makes rotary swinging motion around a fixed point under the urging of the eccentric sleeve. So that the crushing wall of the crushing cone is close to and leaves from the surface of the pricking wall fixedly arranged on the adjusting sleeve, and the ore is continuously impacted in the crushing cavity, extruded and bent to crush the ore.

In the process of realizing the application, the inventor finds that at least the following problems exist in the technology, a large amount of dust can be generated in the ore crushing process, the generated dust enters the main shaft or the eccentric shaft sleeve, so that the lubricating oil of the crusher is frequently replaced, the core components such as the horizontal shaft assembly, the eccentric copper sleeve, the thrust assembly and the like are damaged relatively quickly, the equipment failure rate is high, and the running cost is increased.

Disclosure of Invention

In order to reduce equipment failure rate and running cost, the application provides a dust-proof device of a cone crusher.

The application provides a dust-proof device of a cone crusher, which adopts the following technical scheme:

the utility model provides a cone crusher dust keeper, includes the dust cover that sets up on the seal receptacle and sets up the mechanism of blowing on the dust cover, set up on the seal receptacle with the lubricated chamber intercommunication of main shaft wind path, the mechanism of blowing set up in on the dust cover, the mechanism of blowing with wind path intercommunication and follow external air supply get into the wind path.

Through adopting above-mentioned technical scheme, when cone crusher during operation, blow in the air way with blowing mechanism for lubrication intracavity is in the malleation state, and the wind is blown towards crushing intracavity along the circumference of main shaft, reduces the dust that the breakage produced and gets into lubrication intracavity, and then has reduced the dust that produces and get into main shaft or eccentric shaft cover in, and the breaker lubricating oil that leads to is changed frequently, has slowed down the damage speed of core parts such as horizontal axle assembly, eccentric copper bush, thrust assembly, has reduced the probability of equipment trouble, has reduced running cost.

Optionally, the mechanism of blowing includes fan, tuber pipe and hose, the fan is provided with just be provided with two on the dust cover, two the fan all with the tuber pipe is connected, the tuber pipe set up in on the dust cover and through the hose with the wind path is connected.

Through adopting above-mentioned technical scheme, at cone crusher during operation, start the fan, the fan is bloied in the wind path through tuber pipe and hose, and the wind blows towards broken intracavity along the circumference of main shaft, reduces the dust entering lubrication intracavity that broken produced, and the mechanism of blowing that sets up simple structure, low cost, and be convenient for construction installation.

Optionally, the air pipe is a circular pipe and surrounds the dust cover, a pipe cleaning mechanism is arranged on the air pipe, the pipe cleaning mechanism comprises a pipe cleaning piece, a mounting bin and a pipe cleaning assembly, two mounting bins are arranged on the air pipe, and the two mounting bins correspond to the two fans respectively; the air pipe is internally and slidably connected with two cleaning pipe pieces, the installation bin is internally provided with cleaning pipe components, and the cleaning pipe components are connected with the cleaning pipe pieces and drive the cleaning pipe pieces to slide.

By adopting the technical scheme, as the fan sucks air from the outside and enters the air pipe, dust is collected in the air pipe for a long time, falls off and easily enters the lubrication cavity, and the cleaning pipe assembly is used for driving the cleaning pipe to clean the air pipe regularly, so that the dust is reduced; the dust entering lubrication cavity probability is further reduced by the aid of the pipe cleaning mechanism, generated dust entering the main shaft or the eccentric shaft sleeve is further reduced, the lubricating oil of the crusher is frequently replaced, the damage speed of core components such as the horizontal shaft assembly, the eccentric copper sleeve and the thrust assembly is slowed down, the equipment failure probability is reduced, and the operation cost is reduced.

Optionally, when the air pipe is cleaned, one fan sucks air, and the other fan supplies air slowly.

Through adopting above-mentioned technical scheme, when clearing up the tuber pipe, the fan induced drafts, further reduces the probability that the dust got into lubricated intracavity, prolongs the live time of lubricating oil, slows down the damage speed of equipment, reduces running cost.

Optionally, the pipe cleaning component comprises a traction rope, a limiting joint, a rotating shaft and a driving piece, wherein two rotating shafts are rotatably arranged in the installation bins, one end of the traction rope is wound on the rotating shaft in one of the installation bins, and the traction rope penetrates through the pipe cleaning piece and is connected with the rotating shaft on the same side in the other installation bin; the driving piece is arranged on the mounting bin, is connected with the rotating shaft and can drive the rotating shaft to wind or release the traction rope; the traction rope is provided with two limiting joints, and the two limiting joints are respectively positioned on two sides of the pipe cleaning piece.

Through adopting the technical scheme, when the air pipe is cleaned, one driving piece drives the rotating shaft in one installation bin to rotate, the rotating shaft is wound with the traction rope, the other driving piece drives the rotating shaft in the other installation bin to rotate, the traction rope is released by the rotating shaft, and the traction rope drives the cleaning piece to slide along the air pipe and clean the inner wall of the air pipe; the pipe cleaning component is simple in structure and convenient to operate, and meanwhile, the limiting energy can reduce relative sliding between the traction rope and the pipe cleaning piece, so that pipe cleaning efficiency can be maintained, dust accumulation in the air pipe is reduced, and dust entering the lubrication cavity is further reduced.

Optionally, be provided with the stopper in the tuber pipe, the both sides of installation storehouse all are provided with the stopper, the lateral wall that the pig is close to each other can with the lateral wall butt that two stoppers are close to each other.

Through adopting above-mentioned technical scheme, when two pig pieces are close to each other, clear section of jurisdiction and stopper butt have reduced the probability of two pig piece laminating, and the air inlet end of fan is passed over to the clear section of jurisdiction of being convenient for simultaneously reduces the influence to lubricated chamber air feed for reduce the effect that the dust got into lubricated chamber can be kept.

Optionally, a containing cavity is formed in a peripheral side wall of the pipe cleaning piece, a wind rotating assembly is formed in the pipe cleaning piece, the wind rotating assembly comprises a plurality of balls and a plurality of wind rotating blades, the balls are arranged in the containing cavity along the circumferential direction of the pipe cleaning piece, the balls are abutted to the inner wall of the air pipe, and the pipe cleaning piece rotates in the air pipe through the balls; the cleaning piece is provided with a plurality of ventilation holes, and the wind rotating blades are arranged on the ventilation holes.

Through adopting above-mentioned technical scheme, when the haulage rope drives clear section of jurisdiction and slides, the fan starts and induced drafts, and wind drives wind and changes the leaf rotation for the pipe cleaning piece is rotated along tuber pipe limit slip, makes the clearance effect to the tuber pipe inner wall obtain the reinforcing, further reduces the detention of dust, has reduced the dust and has got into lubricated chamber.

Optionally, a plurality of pigging knives are disposed on both sides of the cleaning segment, the plurality of pigging knives are disposed along the circumferential direction of the cleaning segment, and the plurality of pigging knives are disposed obliquely along the rotation direction of the cleaning segment.

Through adopting above-mentioned technical scheme, when the haulage rope drives clear section of jurisdiction and slides, the fan starts and induced drafts, and wind drives wind and changes the leaf rotation for the pigging piece slides along the tuber pipe limit and rotates, and the pigging sword clears up the inner wall of tuber pipe, makes the clearance to the inner wall of tuber pipe more thorough through the setting of pigging sword, reduces the clearance frequency of tuber pipe, reduces the cost of labor.

Optionally, a cleaning brush is arranged on the peripheral side wall of the cleaning tube piece.

Through adopting above-mentioned technical scheme, when the haulage rope drives clear section of jurisdiction and slides, the fan starts and induced drafts, and wind drives wind and changes the leaf rotation for the pigging piece slides along the tuber pipe limit and rotates, and the pigging sword clears up the inner wall of tuber pipe, and the brush cleaner further brushes down to the dust, through the cooperation of pigging sword and brush cleaner, makes the clearance to the inner wall of tuber pipe more thoroughly, reduces the clearance frequency of tuber pipe, reduces the cost of labor.

Optionally, a one-way valve is arranged at the joint of the air pipe and the hose.

Through adopting above-mentioned technical scheme, through the setting of check valve, when reducing the clearance tuber pipe, the condition of negative pressure appears in lubricated chamber, and less broken chamber is detained the dust and is got into lubricated chamber for reduce the effect that the dust got into lubricated chamber can be kept.

In summary, the application has the following beneficial technical effects:

1. when the cone crusher works, air is blown into the air passage by the air blowing mechanism, so that the lubrication cavity is in a positive pressure state, air is blown into the crushing cavity along the circumferential direction of the main shaft, dust generated by crushing is reduced to enter the lubrication cavity, and then the generated dust is reduced to enter the main shaft or the eccentric shaft sleeve, so that the lubricating oil of the crusher is frequently replaced, the damage speed of core components such as a horizontal shaft assembly, the eccentric copper sleeve and a thrust assembly is slowed down, the probability of equipment failure is reduced, and the running cost is reduced;

2. when the air pipe is cleaned, the fan sucks air, so that the probability of dust entering the lubricating cavity is further reduced, the service time of lubricating oil is prolonged, the damage speed of equipment is slowed down, and the running cost is reduced;

3. when the traction rope drives the cleaning pipe piece to slide, the fan is started and induced draft, and the wind drives the wind rotating blade to rotate, so that the cleaning pipe piece slides along the wind pipe and rotates, the cleaning effect on the inner wall of the wind pipe is enhanced, the retention of dust is further reduced, and the dust is reduced from entering the lubrication cavity;

4. when the haulage rope drives the clear section of jurisdiction to slide, the fan starts and induced drafts, and wind drives wind and changes the leaf rotation for the pigging piece is along the tuber pipe limit slip rotation, and the pigging sword is cleared up the inner wall of tuber pipe, and the brush cleaner further brushes down to the dust, through the cooperation of pigging sword and brush cleaner, makes the clearance to the inner wall of tuber pipe more thoroughly, reduces the clearance frequency of tuber pipe, reduces the cost of labor.

Drawings

FIG. 1 is a schematic view of the installation position of a cone crusher dust keeper in an embodiment of the present application;

FIG. 2 is a schematic diagram showing the installation position of a blower mechanism according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a blower mechanism according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a bellows in accordance with an embodiment of the present application;

FIG. 5 is a schematic view of the overall structure of a cleaning segment according to an embodiment of the present application;

FIG. 6 is a cross-sectional view of a purge segment in an embodiment of the application;

fig. 7 is a cross-sectional view of a mounting cartridge in an embodiment of the application.

Reference numerals: 100. a sealing seat; 110. an air path; 200. a dust cover; 300. a blowing mechanism; 310. a blower; 320. an air duct; 330. a hose; 340. a one-way valve; 350. a wind collecting box; 360. an air outlet pipe; 400. a pipe cleaning mechanism; 410. cleaning the tube sheets; 411. a vent hole; 420. a mounting bin; 430. a pig assembly; 431. a traction rope; 432. a limit joint; 433. a rotating shaft; 434. a driving motor; 435. a drive gear; 436. a driven gear; 440. a limiting block; 450. a wind-turning assembly; 451. a ball; 452. wind turning vanes; 453. a fixing ring; 460. a pig knife; 470. a cleaning brush; 480. a connecting ring; 490. and a guide wheel.

Detailed Description

The present application is described in further detail below with reference to fig. 1-7.

The embodiment of the application discloses a dust-proof device of a cone crusher.

Referring to fig. 1 and 2, the cone crusher dustproof device comprises a dustproof cover 200 detachably connected to a sealing seat 100 through bolts, two air passages 110 arranged on the sealing seat 100 and communicated with a lubrication cavity, and a blowing mechanism 300 arranged on the dustproof cover 200 and communicated with the air passages 110 and used for sending external air into the air passages 110; when ore crushing is carried out, dust is generated in the crushing cavity, the air blowing mechanism 300 continuously supplies air to the lubricating cavity through the air passage 110, and air is blown into the crushing cavity from the lubricating cavity, so that the lubricating cavity is under positive air pressure, and the dust in the crushing cavity is reduced to enter the lubricating cavity.

Referring to fig. 1, 2 and 3, two air passages 110 communicating with the main shaft lubrication chamber are provided on the sealing seat 100, and the two air passages 110 are provided along the periphery Xiang Duichen of the sealing seat 100; the air blowing mechanism 300 comprises an air pipe 320 fixedly connected to the outer side wall of the dust cover 200, the air pipe 320 is a circular pipe and is a stainless steel pipe, and the air pipe 320 is arranged around the dust cover 200; two fans 310 are fixedly connected to the dust cover 200, and the two fans 310 correspond to the two air paths 110 respectively; the dust cover 200 is fixedly connected with two air collecting boxes 350, the two air collecting boxes 350 respectively correspond to the two fans 310, the air collecting boxes 350 are connected with the fans 310 and communicated, the air collecting boxes 350 are fixedly connected with two air outlet pipes 360, and the two air outlet pipes 360 are connected with and communicated with the air pipes 320; two hoses 330 are fixedly connected to the air pipe 320, and one end, away from the air pipe 320, of each hose 330 is connected and communicated with the air passage 110; the connection between the air duct 320 and the hose 330 is provided with a one-way valve 340, and the one-way valve 340 only allows the air in the air duct 320 to enter the hose 330.

Referring to fig. 4 and 5, a pipe cleaning mechanism 400 is provided on the air duct 320, the pipe cleaning mechanism 400 includes a pipe cleaning piece 410, the pipe cleaning piece 410 is in a shape of a round cake, the pipe cleaning piece 410 slides in the air duct 320 along the direction of arrangement of the air duct 320, a containing cavity for containing part of dust is provided on the circumferential side wall of the pipe cleaning piece 410, two circles of pipe cleaning knives 460 with opposite directions are fixedly connected on the circumferential side wall of the pipe cleaning piece 410, a plurality of pipe cleaning knives 460 of each circle are arranged at equal intervals along the circumferential direction of the pipe cleaning piece 410, and the pipe cleaning knives 460 are abutted against the inner wall of the air duct 320 and slide relatively; the dust cover 200 is fixedly connected with two installation bins 420, the two installation bins 420 are respectively corresponding to the two fans 310 and are connected with the air pipes 320, an installation cavity communicated with the air pipes 320 is formed in the installation bin 420, and a pipe cleaning assembly 430 for driving the pipe cleaning pieces 410 to slide is arranged in the installation cavity; when the cone crusher stops working, the cleaning tube piece 410 can be driven to slide by the tube cleaning assembly 430, the cleaning tube piece 410 drives the cleaning knife 460 to clean the inner wall of the air pipe 320, when the cleaning work is performed, one fan 310 sucks air, the other fan 310 supplies air slowly, the air supply speed is smaller than the air suction speed of the other fan 310, negative pressure is generated in the air pipe 320, and when the cleaning tube piece 410 moves to the other installation bin 420, the running states of the two fans 310 are switched.

Referring to fig. 4, 6 and 7, the pig assembly 430 includes rotating shafts 433, two rotating shafts 433 are rotatably connected in each of the installation bins 420, the axis of the rotating shafts 433 is perpendicular to the sliding direction of the pig 410, and the rotating directions of the two rotating shafts 433 in the same installation bin 420 are opposite; two traction ropes 431 are respectively wound on two rotating shafts 433 in one mounting bin 420, one end of each traction rope 431, which is far away from the corresponding rotating shaft 433, is connected with the rotating shaft 433 on the same side in the other mounting cavity, and can be wound on the rotating shaft 433 along with the rotation of the rotating shaft 433; the two traction ropes 431 respectively pass through the centers of the two pipe cleaning sheets 410 and are rotationally connected with the pipe cleaning sheets 410 through bearings, each traction rope 431 is fixedly connected with two limiting sections 432, the two limiting sections 432 are respectively positioned on two sides of the pipe cleaning sheets 410 and are abutted with the pipe cleaning sheets 410, and the pipe cleaning sheets 410 can rotate relative to the limiting sections 432; the installation bin 420 is provided with a driving piece for driving the rotation shafts 433 to rotate, when the pipeline is cleaned, the driving piece in the installation bin 420, which is close to the cleaning pipe piece 410, drives the two rotation shafts 433 to rotate, the two rotation shafts 433 release the traction ropes 431, the driving piece in the other installation bin 420 drives the two rotation shafts 433 to rotate, and the rotation shafts 433 are wound around the traction ropes 431, so that the cleaning pipe piece 410 slides along the air pipe 320.

Referring to fig. 7, the driving member includes a driving motor 434 fixedly coupled to the mounting bin 420, the driving motor 434 is coupled to one of the rotation shafts 433, and a driving gear 435 is keyed to an output shaft of the driving motor 434, and the other rotation shaft 433 is coupled to a driven gear 436 passing through a side wall of the mounting cavity, the driving gear 435 being engaged with the driven gear 436; when the driving motor 434 is started, the driving motor 434 drives the rotation shaft 433 and the driving gear 435 to rotate, the driving gear 435 drives the driven gear 436 to reversely rotate, and the driven gear 436 drives the other rotation shaft 433 to rotate.

Referring to fig. 5 and 6, the pig 410 is provided with a wind rotating assembly 450, the wind rotating assembly 450 includes a fixing ring 453 fixedly connected to an inner wall of the accommodating cavity, the fixing ring 453 is concentric with the pig 410 and is rotationally connected to a plurality of balls 451 on a side wall far away from the axis, the balls 451 are abutted to an inner wall of the air pipe 320 and relatively rotate, a plurality of through ventilation holes 411 are formed on the side wall of the pig 410, the implementation is preferably twelve, six wind rotating blades 452 are fixedly connected to the side walls of two sides of the pig 410 respectively, the wind rotating blades 452 are respectively corresponding to the ventilation holes 411, the six wind rotating blades 452 of two sides are arranged at intervals, the inclination angles of the wind rotating blades 452 of two sides are opposite, and the wind rotating blades 452 of the same side are opposite to the inclination directions of the pig 460; when the blower 310 sucks or blows air, the air is guided through the ventilation holes 411 and then through the air rotating blades 452 so that the cleaning sheet 410 obtains a rotating force, so that the cleaning sheet 410 rotates in the air duct 320.

Referring to fig. 5 and 6, in order to further lift the cleaning tube piece 410 to clean the air duct 320, two connection rings 480 are fixedly connected to the inner wall of the accommodating cavity, the two connection rings 480 are respectively located at two sides of the fixing ring 453, and a cleaning brush 470 is fixedly connected to the peripheral side wall of the connection ring 480, and the cleaning brush 470 is abutted to the inner wall of the air duct 320.

Referring to fig. 4, two groups of limiting blocks 440 are fixedly connected to the inner wall of the air duct 320, each group includes two limiting blocks 440, each limiting block 440 is annular, each mounting bin 420 corresponds to one group of limiting blocks 440, each group of two limiting blocks 440 are respectively located between two air outlet pipes 360 and the mounting bins 420 on the same air collecting box 350, the side walls of the two cleaning pipe pieces 410, which are close to each other, can be abutted with the side walls of the two limiting blocks 440, which are far away from each other, when the cleaning pipe pieces 410 are abutted with the limiting blocks 440, the cleaning pipe pieces 410 are located between the air outlet pipes 360 and the limiting blocks 440, so that weakening of the cleaning pipe pieces 410 to wind force is reduced.

Referring to fig. 4 and 7, in order to reduce the occurrence of the misalignment of the traction rope 431 and the cleaning sheet 410, two sets of guide wheels 490 are fixedly connected to the air duct 320, each set of guide wheels 490 includes two guide wheels 490, each set of guide wheels 490 corresponds to the installation bin 420, and each set of two guide wheels 490 is respectively located between the limiting block 440 and the installation bin 420, and the traction rope 431 extends from the rotating shaft 433, bypasses the guide wheels 490, and then passes through the cleaning sheet 410.

In order to further reduce the cleaning frequency of the air duct 320, a filter screen can be detachably connected to one side of the air collection box 350, which is close to the air inlet of the fan 310, so that dust in the air is reduced to enter the air duct 320; the connection mode of the filter screen can be realized by adopting a mode of punching holes on the air collecting box 350 and inserting the filter screen.

The implementation principle of the dustproof device of the cone crusher provided by the embodiment of the application is as follows: when ore crushing is carried out, ore is crushed in a crushing cavity of the cone crusher, the fans 310 are started, the two fans 310 blow simultaneously, wind enters the wind pipe 320 through the two air outlet pipes 360 on the air collecting box 350, the wind enters the wind path 110 through the one-way valve 340 and the hose 330 connected with the wind pipe 320, then enters the lubrication cavity through the wind path 110, the lubrication cavity is under positive wind pressure, the wind blows into the crushing cavity from the lubrication cavity, and dust is reduced to enter the lubrication cavity.

When the cone crusher stops working, two driving motors 434 are started, the two driving motors 434 rotate in opposite directions, the driving motors 434 drive two rotating shafts 433 in the same installation bin 420 to rotate reversely through a driving gear 435 and a driven gear 436, a traction rope 431 is released from the rotating shaft 433 close to the cleaning tube piece 410, the traction rope 431 is wound around the rotating shaft 433 far away from the cleaning tube piece 410, the cleaning tube piece 410 slides along the air pipe 320 under the traction of the traction rope 431, meanwhile, a fan 310 far away from the cleaning tube piece 410 sucks air, the other fan 310 blows air slowly, under the blowing of air, an air rotating blade 452 drives the cleaning tube piece 410 to rotate, the cleaning tube piece 410 drives the cleaning knife 460 to rotate while sliding, the inner wall of the air pipe 320 is cleaned, and meanwhile, a cleaning brush 470 cleans the air pipe 320, and when the cleaning tube piece 410 passes through the air outlet pipe 360, part of dust remained in a containing cavity enters a dust collecting cover discharged through the fan 310 by the suction force of the fan 310; the above steps are then reversed and repeated cleaning is performed a plurality of times so that the interior of the ductwork 320 remains clean.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The utility model provides a cone crusher dust keeper, its characterized in that, including setting up dust cover (200) on seal holder (100) and setting up on dust cover (200) mechanism of blowing (300), set up on seal holder (100) with wind path (110) of main shaft lubrication chamber intercommunication, mechanism of blowing (300) set up in on dust cover (200), mechanism of blowing (300) with wind path (110) intercommunication and follow external air supply get into wind path (110).

2. The cone crusher dust keeper of claim 1, wherein the air blowing mechanism (300) comprises a blower (310), an air duct (320) and a hose (330), the blower (310) is provided with the dust cover (200) and two blowers (310) are connected with the air duct (320), and the air duct (320) is provided on the dust cover (200) and connected with the air duct (110) through the hose (330).

3. The cone crusher dust protection device according to claim 2, characterized in that the air duct (320) is a collar pipe arranged around the dust cover (200), a pipe cleaning mechanism (400) is arranged on the air duct (320), the pipe cleaning mechanism (400) comprises a pipe cleaning piece (410), a mounting bin (420) and a pipe cleaning assembly (430), two mounting bins (420) are arranged on the air duct (320), and the two mounting bins (420) respectively correspond to the two fans (310); the wind pipe (320) is slidably connected with two cleaning pipe pieces (410), each installation bin (420) is internally provided with a cleaning pipe component (430), and each cleaning pipe component (430) is connected with each cleaning pipe piece (410) and drives the cleaning pipe piece (410) to slide.

4. A cone crusher dust protection apparatus according to claim 3, characterized in that one of said fans (310) is sucking air and the other of said fans (310) is blowing air slowly while cleaning said air duct (320).

5. The cone crusher dust prevention device according to claim 3 or 4, characterized in that the pig assembly (430) comprises a haulage rope (431), a limit joint (432), a rotation shaft (433) and a driving element, wherein two rotation shafts (433) are rotatably arranged in the installation bins (420), one end of the haulage rope (431) is wound on the rotation shaft (433) in one of the installation bins (420), and the haulage rope (431) is connected with the rotation shaft (433) on the same side in the other installation bin (420) through the pig piece (410); the driving piece is arranged on the installation bin (420), is connected with the rotating shaft (433) and can drive the rotating shaft (433) to wind or release the traction rope (431); two limiting joints (432) are arranged on the hauling rope (431), and the two limiting joints (432) are respectively located on two sides of the pipe cleaning piece (410).

6. A cone crusher dust keeper according to claim 3, characterized in that a stopper (440) is arranged in the air duct (320), both sides of the mounting bin (420) are provided with the stopper (440), and the side walls of the pig (410) close to each other can be abutted with the side walls of the two stoppers (440) close to each other.

7. The cone crusher dust prevention device according to claim 5, wherein a receiving cavity is formed in a circumferential side wall of the cleaning sheet (410), a wind rotation assembly (450) is formed in the cleaning sheet (410), the wind rotation assembly (450) comprises a plurality of balls (451) and a plurality of wind rotation blades (452), the balls (451) are arranged in the receiving cavity along a circumferential direction of the cleaning sheet (410), the balls (451) are abutted against an inner wall of the air duct (320), and the cleaning sheet (410) rotates in the air duct (320) through the balls (451); a plurality of vent holes (411) are formed in the cleaning sheet (410), and the wind rotating blades (452) are arranged on the vent holes (411).

8. The cone crusher dust protection device of claim 7, characterized in that both sides of the pig blade (410) are provided with a plurality of pig blades (460), a plurality of the pig blades (460) are provided along the circumference of the pig blade (410), and a plurality of the pig blades (460) are provided obliquely along the rotation direction of the pig blade (410).

9. The cone crusher dust protection device of claim 7, characterized in that a cleaning brush (470) is provided on the peripheral side wall of the pig blade (410).

10. A cone crusher dust protection device according to any one of claims 2-4, characterized in that the connection of the air duct (320) and the hose (330) is provided with a one-way valve (340).