CN116651582B - Device and method for improving ore pulverization efficiency through long-distance acceleration - Google Patents

Abstract

The invention relates to a device for improving ore pulverization efficiency through long-distance acceleration, which comprises a powder acceleration pipeline, wherein first rotating bearings are arranged at two ends of the powder acceleration pipeline, powder moving pipes are arranged at one sides of the two first rotating bearings, which are far away from the powder acceleration pipeline, of the powder acceleration pipeline, a fixed cover is arranged on an outer cover of the powder acceleration pipeline, and the fixed cover is fixedly sleeved on the first rotating bearings; the invention improves the structure of the existing ore pulverizing device, and the improved ore pulverizing device can improve the moving speed of ore materials due to the additionally arranged powder accelerating pipeline for long-distance acceleration; meanwhile, the powder accelerating pipeline rotates and a plurality of cutting assemblies are arranged in the powder accelerating pipeline, so that the collision probability of mineral powder can be increased; by the mode, the ore pulverization efficiency can be improved on the whole.

Description

A device and method for improving ore powdering efficiency through long-distance acceleration

Technical field

The invention relates to the technical field of ore powdering equipment, and in particular to a device and method for improving ore powdering efficiency through long-distance acceleration.

Background technique

Ore refers to stones containing certain valuable minerals extracted from mines. After being processed step by step such as crushing and grinding, the ore can be used in metal mines, metallurgical industry, chemical industry, construction industry, iron and steel industry, etc. ) road construction units, cement industry, sand and gravel industry and other engineering fields. In the process of crushing and grinding of ores in the prior art, due to the simple structure of the crushing and grinding, there is a problem of low efficiency in the process of crushing and grinding. In order to solve the above problems, the present invention proposes a device and method for improving ore powdering efficiency through long-distance acceleration.

Contents of the invention

(1) Technical problems to be solved

The purpose of the present invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a device and method for improving ore powdering efficiency through long-distance acceleration, so as to solve the above technical problems.

(2)Technical solutions

In order to achieve the purpose of the present invention, the technical solutions adopted by the present invention are:

A device for improving the efficiency of ore powdering through long-distance acceleration, including a powder acceleration pipeline. First rotating bearings are provided at both ends of the powder acceleration pipeline, and the two first rotating bearings are far away from the powder acceleration pipeline. A powder moving tube is provided on one side of the pipeline, and a fixed cover is provided on the outer cover of the powder accelerating pipeline, and the fixed cover is fixedly sleeved on the first rotating bearing.

Further, a driving mechanism is provided in the fixed cover. The driving mechanism includes a driving motor fixedly connected to the inner wall of the fixed cover. The driving end of the driving motor is connected to one end of the supporting rotating rod, and the supporting rotating rod is A first gear is fixedly connected to the other end, the first gear meshes with the second gear, and the second gear is fixedly sleeved outside the powder acceleration pipe.

Further, several cutting assemblies are provided in the powder acceleration pipe.

Further, the cutting assembly includes a second rotating bearing fixed on the inner wall of the powder acceleration pipe, and a rotating ring fixedly plugged into the second rotating bearing. Several cutters are provided on the inner wall of the rotating ring. Knife assembly.

Further, the cutting assembly also includes a support motor, the support motor is fixedly arranged in the sealing cover, and the sealing cover is fixedly arranged on the first rotating bearing, a rotating rod is connected to the driving end of the supporting motor, and the rotating rod is connected to the driving end of the supporting motor. One end of the tilt link is fixedly connected to the side wall of the rod, and the other end of the tilt link is fixedly connected to the side wall of the rotating ring.

Further, the cutter assembly includes a cutter base and a cutter body inserted into the cutter base. A second magnet block is fixedly connected to one end of the cutter body located in the cutter base, and the second magnet One end of the guide support assembly is fixedly connected to the side wall of the block, and the other end of the guide support assembly is fixedly connected to the first magnet block, and the first magnet block is fixedly arranged on the inner bottom wall of the cutter base.

Further, the guide support assembly includes a guide support rod, a guide support cylinder and a guide support spring. The guide support rod is movably inserted into the guide support cylinder. The guide support spring is wound around and connected to the outside of the guide support rod, and the guide support spring is connected to the outside of the guide support rod. The two ends of the support spring are respectively fixedly connected to the side wall of the guide support rod and the outer wall of the guide support tube.

Further, an auxiliary cutting mechanism is provided in the powder accelerating pipe. The auxiliary cutting mechanism includes a moving support block connected to the second magnet block, and a movable supporting block located in the cutter body and used to move the supporting block. The mobile support slot has one end of the connection spring fixedly connected to the inner wall of the mobile support slot, and the other end of the connection spring is fixedly connected to the upper end face of the mobile support block, and the upper end face of the mobile support block is also fixedly connected. There is one end of the vertical rod, and the other end of the vertical rod is fixedly connected with the collision column, and the cutter body is provided with a telescopic assembly.

Further, the telescopic assembly includes an internally threaded pipe fixedly plugged into the cutter body, and a telescopic cutter is inserted into the internal thread of the internally threaded pipe. The telescopic cutter is provided with a movable ring on its outer movable sleeve, and the movable ring is One end of the return spring is fixedly connected to the side wall, and the other end of the return spring is fixedly connected to the side wall of the internally threaded pipe.

Further, the method of device for improving ore powdering efficiency through long-distance acceleration includes the following steps:

The powder acceleration pipe is used to accelerate the passing ore dust and achieve crushing of the ore through the setting of the cutting assembly;

The driving mechanism will bring the powder to accelerate the rotation of the pipe drive, thereby speeding up the crushing rate of the ore;

The setting of the auxiliary cutting mechanism can speed up the efficiency of ore powdering by increasing the crushing area.

(3) Beneficial effects:

The present invention improves the structure of the existing ore powdering device. The improved ore powdering device adds a long-distance accelerated powder acceleration pipeline, so the moving speed of the ore material in the powder acceleration pipeline can be increased, thereby By increasing the moving speed of ore materials, the ore powdering efficiency is accelerated and processing efficiency is improved.

The driving mechanism provided by the invention is used to drive the powder acceleration pipe to rotate relative to the powder moving pipe, so that the dust can move left and right in the powder acceleration pipe and flip over at the same time, thereby increasing the probability of dust collision and thus accelerating the lifting. Ore powdering efficiency.

The cutting assembly provided by the present invention can increase the powdering rate more efficiently. Specifically, when the driving mechanism drives the powder acceleration pipe to rotate clockwise, it will cause the support motor to rotate counterclockwise with the rotating rod. The rotation of the rotating rod will By tilting the connecting rod, the rotating ring rotates counterclockwise, thereby driving the cutter assembly to rotate counterclockwise. In this way, the rotation of the cutter assembly is in the opposite direction to the crushing rotation driven by the powder acceleration pipe, so that the dust can be better crushed. Powdering to improve the efficiency of ore powdering.

The cutter assembly provided by the present invention has a reasonable structural design, which can further crush and pulverize dust. Specifically, under the action of centrifugal force and the guide support assembly, the cutter body will circulate up and down in the cutter base, and the cutter body will move The cutting area can be changed, so that a larger area of dust can be broken, thereby accelerating the ore powdering efficiency; and the sides of the first magnet block and the second magnet block that are close to each other have the same magnetism, so that under the action of magnetic thrust, they can It is better to make the cutter body circulate up and down in the cutter base.

The auxiliary cutting mechanism provided by the present invention can accelerate and improve the efficiency of ore powdering. Specifically, when the cutter body moves downward relative to the cutter base, the second magnet block will move upward in the moving support groove with the moving support block, and the moving support block will move upward in the moving support groove. The movement of the support block will bring the resistance column to move upward through the vertical rod. The upward movement of the resistance column will push the telescopic cutter to move outside the cutter body. Since the telescopic cutter is threadedly connected to the internally threaded pipe, the telescopic cutter is The knife will rotate and move outside the cutter body. In this way, on the one hand, the extension of the telescopic cutter to the cutter body will increase the cutting area, thus speeding up the cutting speed. On the other hand, the telescopic cutter will cause damage during the extension process. Rotation can crush the dust better and accelerate the ore powdering efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of one embodiment of the device and method for improving ore powdering efficiency through long-distance acceleration according to the present invention;

Figure 2 is a schematic structural diagram of another embodiment of the device and method for improving ore powdering efficiency through long-distance acceleration according to the present invention;

Figure 3 is a schematic structural diagram of a cutter assembly of one embodiment of the device and method for improving ore powdering efficiency through long-distance acceleration according to the present invention;

Figure 4 is a schematic structural diagram of a cutter assembly according to another embodiment of the present invention's device and method for improving ore powdering efficiency through long-distance acceleration;

Figure 5 is an enlarged schematic diagram of the structure A in Figure 4 of the present invention's device and method for improving ore powdering efficiency through long-distance acceleration.

The reference numbers are as follows:

Powder acceleration pipe 1, powder moving pipe 2, first rotating bearing 3, driving mechanism 4, driving motor 41, supporting rotating rod 42, first gear 43, second gear 44, cutting assembly 5, rotating ring 51, Two rotating bearings 52, cutter assembly 53, cutter base 531, first magnet block 532, guide support assembly 533, guide support rod 5331, guide support tube 5332, guide support spring 5333, second magnet block 534, cutter body 535. Rotating rod 54, tilting link 55, support motor 56, sealing cover 57, auxiliary cutting mechanism 6, moving support block 61, moving support groove 62, connecting spring 63, vertical rod 64, collision column 65, telescopic assembly 66 , telescopic cutter 661, internally threaded pipe 662, movable ring 663, return spring 664, fixed cover 7.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawings 1-5 and examples:

A device for improving ore powdering efficiency through long-distance acceleration, including a powder acceleration pipe 1. Both ends of the powder acceleration pipe 1 are provided with first rotating bearings 3, and two of the first rotating bearings 3 A powder moving pipe 2 is provided on the side away from the powder accelerating pipe 1. The outer cover of the powder accelerating pipe 1 is provided with a fixed cover 7, and the fixed cover 7 is fixedly sleeved on the first rotating bearing 3. The present invention The structure of the existing ore powdering device is improved. The improved ore powdering device adds a long-distance acceleration powder acceleration pipe 1, so the moving speed of the ore material in the powder acceleration pipe 1 can be increased, thereby passing Increase the moving speed of ore materials, accelerate the ore powdering efficiency, and improve processing efficiency.

In this embodiment, a driving mechanism 4 is provided inside the fixed cover 7. The driving mechanism 4 includes a driving motor 41 fixedly connected to the inner wall of the fixed cover 7. The driving end of the driving motor 41 is connected to a support rotating rod. One end of 42, and the other end of the supporting rotating rod 42 is fixedly connected with a first gear 43, the first gear 43 meshes with the second gear 44, and the second gear 44 is fixedly sleeved outside the powder acceleration pipe 1, The driving mechanism 4 provided in the present invention is used to drive the powder accelerating pipe 1 to rotate relative to the powder moving pipe 2, so that the dust can be turned over while moving left and right in the powder accelerating pipe 1, thereby increasing the probability of dust collision. , thereby accelerating the improvement of ore powdering efficiency.

In this embodiment, several cutting assemblies 5 are provided in the powder accelerating pipe 1. The cutting assemblies 5 include a second rotating bearing 52 fixed on the inner wall of the powder accelerating pipe 1, and a second rotating bearing 52 fixed on the inner wall of the powder accelerating pipe 1. There are two rotating rings 51 in the rotating bearings 52, and several cutter assemblies 53 are provided on the inner wall of the rotating ring 51.

The cutting assembly 5 also includes a support motor 56. The support motor 56 is fixedly provided in the sealing cover 57, and the sealing cover 57 is fixedly provided on the first rotating bearing 3. The driving end of the support motor 56 is connected with a rotating Rod 54, and one end of the tilt link 55 is fixedly connected to the side wall of the rotating rod 54, and the other end of the tilt link 55 is fixedly connected to the side wall of the rotating ring 51. The cutting assembly 5 provided in the present invention can To increase the powdering rate more efficiently, specifically, when the driving mechanism 4 drives the powder acceleration pipe 1 to rotate clockwise, it will cause the support motor 56 to rotate counterclockwise with the rotating rod 54. The rotation of the rotating rod 54 will be through the tilt connection. The rod 55 rotates counterclockwise with the rotating ring 51, thereby driving the cutter assembly 53 to rotate counterclockwise. In this way, the rotation of the cutter assembly 53 is in the opposite direction to the crushing rotation driven by the powder acceleration pipe 1, so that the dust can be better Carry out crushing and powdering to improve the efficiency of ore powdering.

In this embodiment, the cutter assembly 53 includes a cutter base 531 and a cutter body 535 inserted into the cutter base 531. One end of the cutter body 535 located in the cutter base 531 is fixedly connected with a third Two magnet blocks 534, and one end of the guide support assembly 533 is fixedly connected to the side wall of the second magnet block 534, and the other end of the guide support assembly 533 is fixedly connected to the first magnet block 532, and the first magnet block 532 Fixedly arranged on the inner bottom wall of the cutter base 531, the cutter assembly 53 provided in the present invention has a reasonable structural design and can further crush and powder the dust. Specifically, under the action of the centrifugal force and the guide support assembly 533, the cutter assembly 53 is The body 535 will circulate up and down in the cutter base 531. The movement of the cutter body 535 can change the cutting area, thereby crushing a larger area of dust, thereby accelerating the ore powdering efficiency; and the first magnet block 532 and the second The sides of the magnet blocks 534 that are close to each other have the same magnetism, so that under the action of the magnetic thrust, the cutter body 535 can be better circulated up and down in the cutter base 531 .

In this embodiment, the guide support assembly 533 includes a guide support rod 5331, a guide support cylinder 5332 and a guide support spring 5333. The guide support rod 5331 is movably inserted into the guide support cylinder 5332, and the guide support spring 5333 is wound around It is connected to the outside of the guide support rod 5331, and the two ends of the guide support spring 5333 are respectively fixedly connected to the side wall of the guide support rod 5331 and the outer wall of the guide support tube 5332. The guide support assembly 533 can be configured as The movement of the first magnet block 532 and the cutter body 535 serves as a guide and support, and at the same time, can provide power for the reset movement of the first magnet block 532 and the cutter body 535 .

In order to improve the crushing efficiency, in this embodiment, an auxiliary cutting mechanism 6 is provided in the powder acceleration pipe 1. The auxiliary cutting mechanism 6 includes a moving support block 61 connected to the second magnet block 534, and an auxiliary cutting mechanism 6 opened in the cutting position. There is a mobile support groove 62 inside the knife body 535 and used to move the mobile support block 61. One end of the connection spring 63 is fixedly connected to the inner wall of the mobile support groove 62, and the other end of the connection spring 63 is fixedly connected to the mobile support. On the upper end surface of the block 61, one end of the vertical rod 64 is fixedly connected to the upper end surface of the mobile support block 61, and the other end of the vertical rod 64 is fixedly connected to the friction column 65. On the cutter body 535 A telescopic component 66 is provided, as shown in Figure 4 .

Please refer to Figure 5. In this embodiment, the telescopic assembly 66 includes an internally threaded tube 662 fixedly plugged into the cutter body 535, and a telescopic cutter 661 is inserted into the internally threaded tube 662. The outer movable sleeve of the telescopic cutter 661 is provided with a movable ring 663, and the side wall of the movable ring 663 is fixedly connected to one end of a return spring 664, and the other end of the return spring 664 is fixedly connected to the side wall of the internally threaded pipe 662. The auxiliary cutting mechanism 6 provided by the invention can accelerate and improve the efficiency of ore powdering. Specifically, when the cutter body 535 moves downward relative to the cutter base 531, it will carry the movable support block 61 through the second magnet block 534 in the movable support groove 62. The movement of the support block 61 will move upward through the vertical rod 64 with the resistance column 65. The upward movement of the resistance column 65 will push the telescopic cutter 661 to move outward from the cutter body 535. Due to the telescopic cutting The knife 661 is threadedly connected to the internally threaded pipe 662, so the telescopic cutter 661 will rotate and move toward the outside of the cutter body 535. On the one hand, the extension of the telescopic cutter 661 to the cutter body 535 will increase the cutting area, thereby speeding up cutting. On the other hand, the telescopic cutter 661 will rotate during the extension process, which can better crush the dust and accelerate the ore powdering efficiency.

In this embodiment, the method of device for improving ore powdering efficiency through long-distance acceleration includes the following steps:

The powder acceleration pipe 1 is used to accelerate the passing ore dust, and achieves crushing of the ore through the setting of the cutting assembly 5;

The driving mechanism 4 will bring the powder to accelerate the rotation of the pipe 1, thereby speeding up the crushing rate of the ore; specifically, the work of the driving motor 41 will cause the rotation of the supporting rotating rod 42, and the rotation of the supporting rotating rod 42 will bring the third A gear 43 rotates. Since the first gear 43 and the second gear 44 mesh with each other, the rotation of the first gear 43 will bring the powder acceleration pipe 1 to rotate relative to the powder moving pipe 2 through the second gear 44 .

The setting of the auxiliary cutting mechanism 6 can speed up the efficiency of ore powdering by increasing the crushing area. Specifically, when the cutter body 535 moves downward relative to the cutter base 531, it will carry the moving support block with the second magnet block 534. 61 moves upward in the moving support groove 62. The movement of the moving support block 61 will bring the resistance column 65 to move upward through the vertical rod 64. The upward movement of the resistance column 65 will push the telescopic cutter 661 toward the cutter body 535. Since the telescopic cutter 661 is threadedly connected to the internally threaded pipe 662, the telescopic cutter 661 will rotate and move outward toward the cutter body 535. In this way, on the one hand, the extension of the telescopic cutter 661 to the cutter body 535 will increase. The cutting area is increased, thereby speeding up the cutting speed. On the other hand, the telescopic cutter 661 will rotate during the extension process, which can better crush the dust and accelerate the ore powdering efficiency.

Beneficial effects of the present invention:

The present invention improves the structure of the existing ore powdering device. The improved ore powdering device adds a powder acceleration pipe 1 for long-distance acceleration, so the moving speed of the ore material in the powder acceleration pipe 1 can be increased. , thereby increasing the moving speed of ore materials, accelerating the ore powdering efficiency and improving processing efficiency.

The driving mechanism 4 provided in the present invention is used to drive the powder accelerating pipe 1 to rotate relative to the powder moving pipe 2, so that the dust can be turned over while moving left and right in the powder accelerating pipe 1, thereby increasing the probability of dust collision. , thereby accelerating the improvement of ore powdering efficiency.

The cutting assembly 5 provided in the present invention can increase the powdering rate more efficiently. Specifically, when the driving mechanism 4 drives the powder acceleration pipe 1 to rotate clockwise, it will cause the support motor 56 to rotate counterclockwise with the rotating rod 54. The rotation of the rod 54 will cause the rotating ring 51 to rotate counterclockwise through the tilted connecting rod 55, thereby driving the cutter assembly 53 to rotate counterclockwise. In this way, the rotation of the cutter assembly 53 and the crushing rotation direction driven by the powder acceleration pipe 1 On the contrary, it can better crush and pulverize dust and improve the efficiency of ore powdering.

The cutter assembly 53 provided in the present invention has a reasonable structural design and can further crush and pulverize dust. Specifically, under the action of centrifugal force and the guide support assembly 533, the cutter body 535 will circulate up and down in the cutter base 531. The movement of the cutter body 535 can change the cutting area, thereby crushing a larger area of dust, thereby accelerating the ore pulverization efficiency; and the sides of the first magnet block 532 and the second magnet block 534 that are close to each other have the same magnetism, so that when Under the action of the magnetic thrust, the cutter body 535 can be better circulated up and down in the cutter base 531 .

The auxiliary cutting mechanism 6 provided in the present invention can accelerate and improve the efficiency of ore powdering. Specifically, when the cutter body 535 moves downward relative to the cutter base 531, the second magnet block 534 will carry the movable support block 61 in the movable support groove. 62 moves upward, and the movement of the moving support block 61 will bring the resistance column 65 to move upward through the vertical rod 64. The upward movement of the resistance column 65 will push the telescopic cutter 661 to move out of the cutter body 535. Due to the telescopic The cutter 661 is threadedly connected to the internally threaded pipe 662, so the telescopic cutter 661 will rotate and move toward the outside of the cutter body 535. On the one hand, the extension of the telescopic cutter 661 to the cutter body 535 will increase the cutting area, thereby speeding up the cutting process. Cutting speed, on the other hand, the telescopic cutter 661 will rotate during the extension process, which can better crush the dust and accelerate the ore powdering efficiency.

The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. Persons of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims (3)

1. The device for improving the ore pulverization efficiency through long-distance acceleration comprises a powder acceleration pipeline (1), and is characterized in that first rotating bearings (3) are arranged at two ends of the powder acceleration pipeline (1), powder moving pipes (2) are arranged at one sides, far away from the powder acceleration pipeline (1), of the two first rotating bearings (3), a fixed cover (7) is arranged on the outer cover of the powder acceleration pipeline (1), and the fixed cover (7) is fixedly sleeved on the first rotating bearings (3); a driving mechanism (4) is arranged in the fixed cover (7), the driving mechanism (4) comprises a driving motor (41) fixedly connected to the inner side wall of the fixed cover (7), the driving end of the driving motor (41) is connected with one end of a supporting rotating rod (42), the other end of the supporting rotating rod (42) is fixedly connected with a first gear (43), the first gear (43) is meshed with a second gear (44), and the second gear (44) is fixedly sleeved outside the powder accelerating pipeline (1); a plurality of cutting assemblies (5) are arranged in the powder accelerating pipeline (1); the cutting assembly (5) comprises a second rotating bearing (52) fixed on the inner side wall of the powder accelerating pipeline (1) and a rotating ring (51) fixedly inserted into the second rotating bearing (52), and a plurality of cutter assemblies (53) are arranged on the inner side wall of the rotating ring (51); the cutting assembly (5) further comprises a supporting motor (56), the supporting motor (56) is fixedly arranged in the sealing cover (57), the sealing cover (57) is fixedly arranged on the first rotating bearing (3), a rotating rod (54) is connected to the driving end of the supporting motor (56), one end of an inclined connecting rod (55) is fixedly connected to the side wall of the rotating rod (54), and the other end of the inclined connecting rod (55) is fixedly connected to the side wall of the rotating ring (51); the cutter assembly (53) comprises a cutter base (531) and a cutter body (535) inserted in the cutter base (531), one end of the cutter body (535) positioned in the cutter base (531) is fixedly connected with a second magnet block (534), one end of a guide supporting assembly (533) is fixedly connected to the side wall of the second magnet block (534), the other end of the guide supporting assembly (533) is fixedly connected to a first magnet block (532), and the first magnet block (532) is fixedly arranged on the inner bottom wall of the cutter base (531); the guide support assembly (533) comprises a guide support rod (5331), a guide support cylinder (5332) and a guide support spring (5333), wherein the guide support rod (5331) is movably inserted into the guide support cylinder (5332), the guide support spring (5333) is connected outside the guide support rod (5331) in a winding manner, and two ends of the guide support spring (5333) are respectively fixedly connected to the side wall of the guide support rod (5331) and the outer side wall of the guide support cylinder (5332); be provided with auxiliary cutting mechanism (6) in powder accelerating tube (1), auxiliary cutting mechanism (6) are including connecting removal supporting shoe (61) on second magnet piece (534) to and offer in cutter body (535) and be used for removing removal supporting groove (62) that supporting shoe (61) activity set up, the one end of fixedly connected with coupling spring (63) on the inside wall of removal supporting groove (62), and the other end fixed connection of coupling spring (63) is on the up end of removing supporting shoe (61), still fixedly connected with one end of vertical pole (64) on the up end of removing supporting shoe (61), and the other end fixedly connected with conflict post (65) of vertical pole (64), be provided with telescopic assembly (66) on cutter body (535).

2. The apparatus for improving the pulverizing efficiency of ores by long-distance acceleration as set forth in claim 1, wherein: the telescopic component (66) comprises an inner threaded pipe (662) fixedly inserted on the cutter body (535), the inner threaded pipe (662) is internally provided with a telescopic cutter (661) in a threaded manner, a movable ring (663) is sleeved outside the telescopic cutter (661), one end of a reset spring (664) is fixedly connected to the side wall of the movable ring (663), and the other end of the reset spring (664) is fixedly connected to the side wall of the inner threaded pipe (662).

3. A method of accelerating the effectiveness of ore pulverization through long distances as set forth in claim 2, comprising the steps of: the powder accelerating pipeline (1) is used for accelerating the passing ore dust and crushing the ore through the arrangement of the cutting assembly (5); the driving mechanism (4) drives the powder accelerating pipeline (1) to rotate, so that the crushing rate of ores is accelerated; the auxiliary cutting mechanism (6) can increase the crushing area and the ore pulverization efficiency.