A dust guard for a cone crusher

Abstract

The application relates to the technical field of ore crushing, in particular to a dustproof device of a cone crusher, which comprises a dustproof cover arranged on a sealing seat and a blowing mechanism arranged on the dustproof cover, a wind channel communicated with a main shaft lubricating cavity is arranged on the sealing seat, the blowing mechanism is arranged on the dustproof cover, the blowing mechanism is communicated with the wind channel and air from the outside is sent into the wind channel. The application has the effects of reducing the equipment failure rate and reducing the operation cost.

Description

Technical Field

[0001] This application relates to the technical field of ore crushing, and in particular to a dust prevention device for a cone crusher. Background Technology

[0002] Currently, with the development of mining machinery, cone crushers are gradually gaining momentum and ushering in significant development opportunities. Due to the special role and influence of crushing equipment, stringent requirements are placed on its reliability, durability, and service life, with a strong expectation for intelligent development. The cone crusher is an advanced, high-power, high-crushing-ratio, and high-productivity hydraulic crusher. It was developed based on the assimilation and absorption of various types of cone crushers from the international advanced level of the 1980s. Its structure is significantly different from traditional cone crushers in design, and it incorporates the main advantages of all known types of cone crushers to date. It is suitable for fine and ultrafine crushing of hard rocks, ores, slag, refractory materials, etc.

[0003] In existing technology, a cone crusher includes a fixed cone, a rotating cone, and a frame, with a gap between the fixed and rotating cones, both of which are enclosed by the frame. The cone crusher also includes a motor, a transmission assembly, a main shaft, and an eccentric bushing. The main shaft passes through the center of the rotating cone, and the eccentric bushing surrounds the main shaft. The motor is connected to the main shaft via the transmission assembly, which can be a belt drive or a coupling. During operation, the motor's rotation drives the main shaft through the belt drive or coupling. The rotating cone, propelled by the eccentric bushing, oscillates around a fixed point. This causes the crushing wall of the cone to alternately approach and move away from the surface of the jaw wall fixed on the adjusting sleeve, subjecting the ore to continuous impact, compression, and bending within the crushing chamber, thus achieving ore crushing.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: a large amount of dust is generated during the crushing process of ore. The dust enters the main shaft or eccentric bushing, resulting in frequent replacement of the crusher's lubricating oil, rapid damage to core components such as the horizontal shaft assembly, eccentric copper bushing, and thrust assembly, high equipment failure rate, and increased operating costs. Summary of the Invention

[0005] In order to reduce equipment failure rate and operating costs, this application provides a dust prevention device for a cone crusher.

[0006] This application provides a dust prevention device for a cone crusher, which adopts the following technical solution:

[0007] A dustproof device for a cone crusher includes a dust cover mounted on a sealing seat and a blower mechanism mounted on the dust cover. The sealing seat has an air passage communicating with the lubrication chamber of the main shaft. The blower mechanism is mounted on the dust cover and communicates with the air passage, supplying air from the outside into the air passage.

[0008] By adopting the above technical solution, when the cone crusher is working, the blower blows air into the air passage, so that the lubrication chamber is in a positive pressure state. The air blows into the crushing chamber along the circumference of the main shaft, reducing the amount of dust generated during crushing that enters the lubrication chamber. This reduces the amount of dust that enters the main shaft or eccentric bushing, thus reducing the frequency of crusher lubricating oil replacement. It also slows down the damage rate of core components such as the horizontal shaft assembly, eccentric copper bushing, and thrust assembly, reducing the probability of equipment failure and lowering operating costs.

[0009] Optionally, the blower mechanism includes a fan, an air duct, and a hose. The fan is mounted on the dust cover and there are two fans. Both fans are connected to the air duct. The air duct is mounted on the dust cover and connected to the air path through the hose.

[0010] By adopting the above technical solution, when the cone crusher is working, the blower is started and blows air into the air passage through the air duct and hose. The air blows into the crushing chamber along the circumference of the main shaft, reducing the amount of dust generated during crushing that enters the lubrication chamber. The blower mechanism is simple in structure, low in cost, and easy to construct and install.

[0011] Optionally, the air duct is a ring pipe surrounding the dust cover, and a cleaning mechanism is provided on the air duct. The cleaning mechanism includes cleaning segments, installation compartments, and cleaning components. Two installation compartments are provided on the air duct, and the two installation compartments correspond to two fans respectively. Two cleaning segments are slidably connected inside the air duct. Each installation compartment is provided with a cleaning component. The cleaning component is connected to the cleaning segment and drives the cleaning segment to slide.

[0012] By adopting the above technical solution, since the fan draws air from the outside into the duct, dust will accumulate in the duct after long-term use. Dust can easily fall into the lubrication chamber. The cleaning component drives the cleaning plate to clean the duct regularly, reducing the amount of dust entering. The cleaning mechanism further reduces the probability of dust entering the lubrication chamber, and further reduces the amount of dust entering the main shaft or eccentric bushing, which leads to frequent changes in the crusher's lubricating oil. This slows down the damage rate of core components such as the horizontal shaft assembly, eccentric copper bushing, and thrust assembly, reduces the probability of equipment failure, and lowers operating costs.

[0013] Optionally, during the duct cleaning, one of the fans draws air in while the other fan slowly delivers air.

[0014] By adopting the above technical solution, when cleaning the air duct, the fan draws air in, further reducing the chance of dust entering the lubrication chamber, extending the service life of the lubricating oil, slowing down the damage rate of the equipment, and reducing operating costs.

[0015] Optionally, the pigging assembly includes a traction rope, limiting joints, a rotating shaft, and a drive component. Two rotating shafts are rotatably arranged in each of the installation compartments. One end of the traction rope is wound around the rotating shaft in one of the installation compartments, and the traction rope passes through the pigging segment and connects to the rotating shaft on the same side in the other installation compartment. The drive component is disposed on the installation compartment, and the drive component is connected to the rotating shaft and can drive the rotating shaft to wind or release the traction rope. Two limiting joints are provided on the traction rope, and the two limiting joints are respectively located on both sides of the pigging segment.

[0016] By adopting the above technical solution, when cleaning the duct, one of the driving components drives a rotating shaft in one installation chamber to rotate, and the rotating shaft winds a traction rope. Another driving component drives a rotating shaft in another installation chamber to rotate, and the rotating shaft releases the traction rope. The traction rope drives the cleaning plate to slide along the duct and clean the inner wall of the duct. The cleaning assembly has a simple structure and is easy to operate. At the same time, the limit joint can reduce the relative sliding between the traction rope and the cleaning plate, so as to maintain the cleaning efficiency, reduce the accumulation of dust in the duct, and thus reduce the amount of dust entering the lubrication chamber.

[0017] Optionally, a limiting block is provided inside the air duct, and the limiting block is provided on both sides of the installation compartment. The side walls of the cleaning plates that are close to each other can abut against the side walls of the two limiting blocks that are close to each other.

[0018] By adopting the above technical solution, when the two cleaning segments approach each other, the cleaning segments abut against the limiting block, reducing the probability of the two cleaning segments sticking together. At the same time, it is convenient for the cleaning segments to pass over the air inlet of the blower, reducing the impact on the air supply to the lubrication chamber, so that the effect of reducing dust entering the lubrication chamber can be maintained.

[0019] Optionally, the cleaning segment has a receiving cavity on its peripheral sidewall, and a pneumatic rotating assembly is provided on the cleaning segment. The pneumatic rotating assembly includes multiple ball bearings and multiple pneumatic rotating blades. The multiple ball bearings are arranged circumferentially in the receiving cavity and abut against the inner wall of the air duct. The cleaning segment rotates in the air duct through the ball bearings. The cleaning segment has multiple ventilation holes, and the pneumatic rotating blades are arranged on the ventilation holes.

[0020] By adopting the above technical solution, when the traction rope drives the cleaning segment to slide, the fan starts and draws air, and the air drives the fan blades to rotate, so that the cleaning segment slides and rotates along the side of the air duct, which enhances the cleaning effect on the inner wall of the air duct, further reduces the retention of dust, and reduces the amount of dust entering the lubrication chamber.

[0021] Optionally, multiple cleaning blades are provided on both sides of the cleaning segment, the multiple cleaning blades are arranged along the circumference of the cleaning segment, and the multiple cleaning blades are inclined along the rotation direction of the cleaning segment.

[0022] By adopting the above technical solution, when the traction rope drives the cleaning segment to slide, the fan starts and draws air, which drives the fan blades to rotate, causing the cleaning segment to slide and rotate along the edge of the duct. The cleaning blade cleans the inner wall of the duct. The cleaning blade makes the cleaning of the inner wall of the duct more thorough, reduces the cleaning frequency of the duct, and reduces labor costs.

[0023] Optionally, a cleaning brush is provided on the peripheral sidewall of the cleaning segment.

[0024] By adopting the above technical solution, when the traction rope drives the cleaning segment to slide, the fan starts and draws air, which drives the fan blades to rotate, causing the cleaning segment to slide and rotate along the edge of the duct. The cleaning knife cleans the inner wall of the duct, and the cleaning brush further removes the dust. Through the cooperation of the cleaning knife and the cleaning brush, the cleaning of the inner wall of the duct is more thorough, reducing the cleaning frequency of the duct and reducing labor costs.

[0025] Optionally, a one-way valve is provided at the connection between the air duct and the flexible hose.

[0026] By adopting the above technical solution and setting a one-way valve, the negative pressure in the lubrication chamber is reduced when cleaning the air duct, and less dust retained in the crushing chamber enters the lubrication chamber, thus maintaining the effect of reducing dust entering the lubrication chamber.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. When the cone crusher is working, the blower blows air into the air passage, so that the lubrication chamber is in a positive pressure state. The air blows into the crushing chamber along the circumference of the main shaft, reducing the amount of dust generated during crushing that enters the lubrication chamber. This reduces the amount of dust that enters the main shaft or eccentric bushing, thus reducing the frequency of crusher lubricating oil changes. It also slows down the damage rate of core components such as the horizontal shaft assembly, eccentric copper bushing, and thrust assembly, reducing the probability of equipment failure and lowering operating costs.

[0029] 2. When cleaning the air duct, the fan draws air in, further reducing the chance of dust entering the lubrication chamber, extending the service life of the lubricating oil, slowing down the damage to the equipment, and reducing operating costs;

[0030] 3. When the traction rope moves the cleaning segment, the fan starts and draws air, which drives the fan blades to rotate, causing the cleaning segment to slide and rotate along the edge of the duct, thereby enhancing the cleaning effect on the inner wall of the duct, further reducing dust retention, and reducing dust entering the lubrication chamber.

[0031] 4. When the traction rope moves the cleaning plate, the fan starts and draws air, which drives the fan blades to rotate, causing the cleaning plate to slide and rotate along the edge of the duct. The cleaning blade cleans the inner wall of the duct, and the cleaning brush further removes the dust. Through the cooperation of the cleaning blade and the cleaning brush, the inner wall of the duct is cleaned more thoroughly, reducing the frequency of duct cleaning and reducing labor costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram showing the installation position of the dustproof device for the cone crusher in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram showing the installation position of the blower mechanism in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the blower mechanism in an embodiment of this application;

[0035] Figure 4 This is a cross-sectional schematic diagram of the duct in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the overall structure of the pigging segment in the embodiments of this application;

[0037] Figure 6 This is a cross-sectional view of the cleaning segment in an embodiment of this application;

[0038] Figure 7 This is a cross-sectional view of the installation compartment in an embodiment of this application.

[0039] Reference numerals: 100, sealing seat; 110, air duct; 200, dust cover; 300, blower mechanism; 310, fan; 320, air duct; 330, hose; 340, one-way valve; 350, air collection box; 360, air outlet duct; 400, cleaning mechanism; 410, cleaning plate; 411, ventilation hole; 420, installation compartment; 430, cleaning assembly; 431, traction rope; 432, limit joint; 433, rotating shaft; 434, drive motor; 435, driving gear; 436, driven gear; 440, limit block; 450, fan rotation assembly; 451, ball bearing; 452, fan rotation blade; 453, fixing ring; 460, cleaning knife; 470, cleaning brush; 480, connecting ring; 490, guide wheel. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1-7This application will be described in further detail.

[0041] This application discloses a dust prevention device for a cone crusher.

[0042] refer to Figure 1 and Figure 2 The dustproof device for the cone crusher includes a dust cover 200 detachably connected to the sealing seat 100 by bolts, two air passages 110 opened on the sealing seat 100 and communicating with the lubrication chamber, and a blower mechanism 300 set on the dust cover 200 and communicating with the air passages 110 for sending outside air into the air passages 110; when crushing ore, dust is generated in the crushing chamber, and the blower mechanism 300 continuously supplies air to the lubrication chamber through the air passages 110. The air is blown from the lubrication chamber into the crushing chamber, thereby making the lubrication chamber have positive air pressure and reducing the amount of dust in the crushing chamber entering the lubrication chamber.

[0043] refer to Figure 1 , Figure 2 and Figure 3 The sealing seat 100 has two air passages 110 communicating with the spindle lubrication chamber, and the two air passages 110 are symmetrically arranged along the circumference of the sealing seat 100; the blower mechanism 300 includes an air duct 320 fixedly connected to the outer wall of the dust cover 200, the air duct 320 is a ring pipe and is made of stainless steel, and the air duct 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 passages 110 respectively; two air collection boxes 350 are fixedly connected to the dust cover 200. The collection box 350 corresponds to two fans 310 respectively, and the collection box 350 is connected to the fans 310 and is in communication. Two air outlet pipes 360 are fixedly connected to the collection box 350, and both air outlet pipes 360 are connected to the air duct 320 and are in communication. Two flexible hoses 330 are fixedly connected to the air duct 320, and the ends of the two flexible hoses 330 away from the air duct 320 are connected to the air passage 110 and are in communication. A one-way valve 340 is provided at the connection between the air duct 320 and the flexible hose 330. The one-way valve 340 only allows the air in the air duct 320 to enter the flexible hose 330.

[0044] refer to Figure 4 and Figure 5A cleaning mechanism 400 is installed on the duct 320. The cleaning mechanism 400 includes a cleaning plate 410, which is disc-shaped. The cleaning plate 410 slides within the duct 320 along its installation direction. A receiving cavity for accommodating some dust is formed on the peripheral wall of the cleaning plate 410. Two rings of cleaning blades 460 with opposite directions are fixedly connected to the peripheral wall of the cleaning plate 410. Multiple cleaning blades 460 in each ring are evenly spaced along the circumference of the cleaning plate 410. The cleaning blades 460 abut against the inner wall of the duct 320 and slide relative to each other. Two installation chambers 420 are fixedly connected to the dust cover 200. The two installation chambers 420 correspond to two fans 310 respectively and are connected to the air supply. The pipe 320 is connected, and an installation cavity is formed in the installation chamber 420 that communicates with the air duct 320. The installation cavity is equipped with a cleaning assembly 430 that drives the cleaning plate 410 to slide. When the cone crusher stops working, the cleaning assembly 430 can be used to drive the cleaning plate 410 to slide. The cleaning plate 410 drives the cleaning knife 460 to clean the inner wall of the air duct 320. During the cleaning work, one fan 310 draws air, and the other fan 310 slowly delivers air. The air delivery speed is less than the air intake speed of the other fan 310, so that the air duct 320 is under negative pressure. When the cleaning plate 410 moves to another installation chamber 420, the operating status of the two fans 310 is switched.

[0045] refer to Figure 4 , Figure 6 and Figure 7 The pigging assembly 430 includes a rotating shaft 433. Two rotating shafts 433 are rotatably connected within each installation chamber 420. The axis of the rotating shaft 433 is perpendicular to the sliding direction of the pigging segment 410, and the two rotating shafts 433 within the same installation chamber 420 rotate in opposite directions. Two traction ropes 431 are wound around the two rotating shafts 433 within one installation chamber 420, respectively. The ends of the two traction ropes 431 away from the rotating shaft 433 are connected to the rotating shaft 433 on the same side within the other installation chamber, and can be wound around the rotating shaft 433 as it rotates. The two traction ropes 431 pass through the centers of the two pigging segments 410 and are connected to the pigging segments 410 via bearings. The rotatable connection includes two fixed limit joints 432 on each traction rope 431. The two limit joints 432 are located on both sides of the cleaning segment 410 and abut against the cleaning segment 410. The cleaning segment 410 can rotate relative to the limit joints 432. The installation chamber 420 is equipped with a drive unit for driving the rotating shaft 433 to rotate. When cleaning the pipeline, the drive unit in the installation chamber 420 closest to the cleaning segment 410 drives the two rotating shafts 433 to rotate, and the two rotating shafts 433 release the traction rope 431. The drive unit in the other installation chamber 420 drives the two rotating shafts 433 to rotate, and the rotating shafts 433 wind around the traction rope 431, so that the cleaning segment 410 slides along the duct 320.

[0046] refer to Figure 7 The driving component includes a drive motor 434 fixedly connected to the mounting chamber 420. The drive motor 434 is connected to one of the rotating shafts 433, and a drive gear 435 is keyed to the output shaft of the drive motor 434. The other rotating shaft 433 passes through the side wall of the mounting chamber and is connected to a driven gear 436. The drive gear 435 and the driven gear 436 mesh. When the drive motor 434 is started, the drive motor 434 drives the rotating shaft 433 and the drive gear 435 to rotate. The drive gear 435 drives the driven gear 436 to rotate in the opposite direction. The driven gear 436 drives the other rotating shaft 433 to rotate.

[0047] refer to Figure 5 and Figure 6 The cleaning segment 410 is equipped with a pneumatic rotation assembly 450. The pneumatic rotation assembly 450 includes a fixing ring 453 fixedly connected to the inner wall of the accommodating cavity. Multiple ball bearings 451 are rotatably connected to the side wall of the fixing ring 453, which is concentric with the cleaning segment 410 and away from the axis. The ball bearings 451 abut against the inner wall of the air duct 320 and rotate relative to each other. Multiple through ventilation holes 411 are opened on the side wall of the cleaning segment 410. In this embodiment, twelve holes are preferred. The side walls on both sides of the cleaning segment 410 are respectively... Six air vanes 452 are fixedly connected, each corresponding to a ventilation hole 411. The six air vanes 452 on both sides are spaced apart, and the inclination angles of the air vanes 452 on both sides are opposite. The inclination direction of the air vanes 452 on the same side is opposite to that of the cleaning blade 460. When the fan 310 draws in or blows air, the air passes through the ventilation hole 411 and is then guided by the air vanes 452, which causes the cleaning blade 410 to obtain rotational force, so that the cleaning blade 410 rotates in the air duct 320.

[0048] refer to Figure 5 and Figure 6 In order to further improve the cleaning effect of the cleaning segment 410 on the air duct 320, two connecting rings 480 are fixedly connected to the inner wall of the accommodating cavity. The two connecting rings 480 are located on both sides of the fixed ring 453, and a cleaning brush 470 is fixedly connected to the peripheral side wall of the connecting ring 480. The cleaning brush 470 abuts against the inner wall of the air duct 320.

[0049] refer to Figure 4 Two sets of limiting blocks 440 are fixedly connected to the inner wall of the air duct 320. Each set includes two limiting blocks 440 in a ring shape. Each installation compartment 420 corresponds to one set of limiting blocks 440. The two limiting blocks 440 in each set are located between the two air outlet ducts 360 and the installation compartment 420 on the same air collection box 350. The side walls of the two cleaning plates 410 that are close to each other can abut against the side walls of the two limiting blocks 440 that are far apart from each other. When the cleaning plate 410 abuts against the limiting block 440, the cleaning plate 410 is located between the air outlet duct 360 and the limiting block 440, reducing the weakening of the air force by the cleaning plate 410.

[0050] refer to Figure 4 and Figure 7 To reduce the occurrence of misalignment between the traction rope 431 and the cleaning segment 410, two sets of guide wheels 490 are fixedly connected to the air duct 320. Each set includes two guide wheels 490, and each set of guide wheels 490 corresponds to the installation chamber 420. The two guide wheels 490 of each set are located between the limit block 440 and the installation chamber 420, respectively. The traction rope 431 extends from the rotating shaft 433, passes around the guide wheel 490, and then passes through the cleaning segment 410.

[0051] To further reduce the cleaning frequency of the air duct 320, a filter screen can be detachably connected to the side of the air collection box 350 near the air inlet of the fan 310 to reduce the amount of dust in the air entering the air duct 320. The filter screen can be connected by making a hole in the air collection box 350 and inserting the filter screen.

[0052] The implementation principle of the dust prevention device for a cone crusher in this application embodiment is as follows: When crushing ore, the ore is crushed in the crushing chamber of the cone crusher. The blower 310 is started, and two blowers 310 blow air at the same time. The air enters the air duct 320 through the two air outlet pipes 360 on the air collection box 350. The air enters the air passage 110 through the one-way valve 340 and the hose 330 connected to the air passage 320. Then, it enters the lubrication chamber through the air passage 110. The lubrication chamber is under positive air pressure. The air is blown from the lubrication chamber into the crushing chamber, reducing the amount of dust entering the lubrication chamber.

[0053] When the cone crusher stops working, the two drive motors 434 are started and rotated in opposite directions. The drive motors 434, through the driving gear 435 and driven gear 436, drive the two rotating shafts 433 within the same mounting chamber 420 to rotate in opposite directions. The rotating shaft 433 closer to the cleaning segment 410 releases the traction rope 431, while the rotating shaft 433 farther from the cleaning segment 410 winds around the traction rope 431. The cleaning segment 410 slides along the air duct 320 under the traction of the traction rope 431, while the fan 310 farther from the cleaning segment 410 enters the air duct. While the suction is in progress, another fan 310 blows air slowly. Under the influence of the airflow, the fan blade 452 drives the cleaning blade 410 to rotate. The cleaning blade 410 drives the cleaning knife 460 to slide and rotate at the same time, cleaning the inner wall of the air duct 320. At the same time, the cleaning brush 470 cleans the air duct 320. When the cleaning blade 410 passes through the outlet air duct 360, some of the dust retained in the accommodating cavity is drawn in by the suction of the fan 310 and discharged through the dust collection hood. Then, the above steps are reversed. After repeated cleaning, the air duct 320 is kept clean.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dust prevention device for a cone crusher, characterized in that, It includes a dust cover (200) disposed on a sealing seat (100) and a blower mechanism (300) disposed on the dust cover (200). The sealing seat (100) has an air passage (110) communicating with the spindle lubrication chamber. The blower mechanism (300) is disposed on the dust cover (200). The blower mechanism (300) is communicating with the air passage (110) and blows air from the outside into the air passage (110). The blower mechanism (300) includes a blower (310), an air duct (320), and a flexible hose (330). The blower (310) is mounted on the dust cover (200) and there are two blowers. Both blowers (310) are connected to the air duct (320). The air duct (320) is mounted on the dust cover (200) and connected to the air passage (110) through the flexible hose (330). The air duct (320) is a ring pipe surrounding the dust cover (200). A cleaning mechanism (400) is provided on the air duct (320). The cleaning mechanism (400) includes cleaning segments (410), installation chambers (420), and cleaning components (430). Two installation chambers (420) are provided on the air duct (320), and the two installation chambers (420) correspond to two fans (310) respectively. Two cleaning segments (410) are slidably connected inside the air duct (320). Each installation chamber (420) is provided with a cleaning component (430). The cleaning component (430) is connected to the cleaning segment (410) and drives the cleaning segment (410) to slide. The cleaning segment (410) has a receiving cavity on its peripheral sidewall. The cleaning segment (410) has a wind turbine assembly (450) which includes multiple balls (451) and multiple wind turbine blades (452). The multiple balls (451) are arranged in the receiving cavity along the circumference of the cleaning segment (410). The balls (451) abut against the inner wall of the air duct (320). The cleaning segment (410) rotates in the air duct (320) through the balls (451). The cleaning segment (410) has multiple ventilation holes (411). The wind turbine blades (452) are arranged on the sidewalls of both sides of the cleaning segment and correspond to the ventilation holes (411). The inclination angles of the wind turbine blades (452) on both sides are opposite.

2. The dust prevention device for a cone crusher according to claim 1, characterized in that, When cleaning the duct (320), one of the fans (310) draws in air, while the other fan (310) slowly delivers air.

3. The dust prevention device for a cone crusher according to claim 1, characterized in that, The pigging assembly (430) includes a traction rope (431), a limiting joint (432), a rotating shaft (433), and a driving component. Two rotating shafts (433) are rotatably arranged in each of the installation chambers (420). One end of the traction rope (431) is wound around the rotating shaft (433) in one of the installation chambers (420). The traction rope (431) passes through the pigging segment (410) and is connected to the rotating shaft (433) on the same side in the other installation chamber (420). The driving component is arranged on the installation chamber (420). The driving component is connected to 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 traction rope (431). The two limiting joints (432) are located on both sides of the pigging segment (410).

4. The dust prevention device for a cone crusher according to claim 1, characterized in that, The air duct (320) is provided with a limiting block (440), and the limiting block (440) is provided on both sides of the installation chamber (420). The side walls of the cleaning plate (410) that are close to each other can abut against the side walls of the two limiting blocks (440) that are close to each other.

5. The dust prevention device for a cone crusher according to claim 4, characterized in that, Multiple cleaning blades (460) are provided on both sides of the cleaning segment (410). The multiple cleaning blades (460) are arranged around the circumference of the cleaning segment (410) and are inclined along the rotation direction of the cleaning segment (410).

6. The dust prevention device for a cone crusher according to claim 4, characterized in that, The cleaning segment (410) is provided with a cleaning brush (470) on its peripheral sidewall.

7. The dust prevention device for a cone crusher according to any one of claims 1-6, characterized in that, A one-way valve (340) is provided at the connection between the air duct (320) and the hose (330).

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