CN112844634A

CN112844634A - Nail nest mill

Info

Publication number: CN112844634A
Application number: CN202011625324.6A
Authority: CN
Inventors: 石通哲; 陈明真; 朱泽锋
Original assignee: Hunan Huatong Powder Equipment Technology Co ltd
Current assignee: Hunan Huatong Powder Equipment Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28
Anticipated expiration: 2040-12-31
Also published as: CN112844634B

Abstract

The application relates to a nail nest mill, which belongs to the field of material crushing equipment and comprises a shell, wherein a feeding channel is arranged at the bottom end of the shell, a discharging channel is arranged at the top end of the shell, a crushing cavity is formed in an inner cavity of the shell, a main shaft is arranged in the crushing cavity, a nail disc assembly and a disc assembly are arranged on the main shaft, and one end of the main shaft is produced out of the shell and is connected with a driving assembly; the dish subassembly includes and sets up at least one dish seat on the main shaft along main shaft axis direction, is provided with a plurality of video discs along circumference on the dish seat, smashes the chamber and is provided with the tooth section of thick bamboo around the dish seat, and the nail dish subassembly is including setting up at the epaxial rotor of main shaft and the stator of setting on shells inner wall, and one side of rotor orientation stator on the rotor is provided with the broken post of multiunit along circumference, and one side of stator orientation rotor is provided with the broken nail with broken post dislocation set. This application has the better advantage of comminuted effect.

Description

Nail nest mill

Technical Field

The application relates to the field of material crushing equipment, in particular to a nail nest mill.

Background

A pulverizer is a machine that pulverizes a large-sized solid raw material to a desired size. The external force applied to the solid in the crushing process comprises four kinds of shearing, impacting, rolling and grinding. The shearing is mainly used for coarse crushing and crushing operation, and is suitable for crushing or crushing of tough or fibrous materials and large-sized materials; the impact is mainly used in the crushing operation and is suitable for crushing the brittle materials; the rolling is mainly used in high-fineness crushing operation and is suitable for ultramicro crushing operation of most materials with properties; the grinding is mainly used for ultramicro grinding or ultra-large grinding equipment and is suitable for further grinding operation after grinding operation.

At present, a plurality of devices for crushing and drying powdery materials exist in the market, but the existing devices only adopt a blade rotating at a high speed to crush the materials in a box body when working.

In view of the above-mentioned related technologies, the inventor considers that the existing crushing equipment has large particle size after crushing materials, and has poor scattering and crushing effects.

Disclosure of Invention

In order to promote the crushing effect of material, this application provides a nail nest grinds.

The application provides a nail nest grinds adopts following technical scheme:

a nail nest mill comprises a shell, wherein a feeding channel is arranged at the bottom end of the shell, a discharging channel is arranged at the top end of the shell, a crushing cavity is formed in an inner cavity of the shell, a main shaft is arranged in the crushing cavity, a nail disc assembly and a disc assembly are arranged on the main shaft, and one end of the main shaft is produced outside the shell and connected with a driving assembly;

the disc component comprises at least one disc seat arranged on the main shaft along the axial direction of the main shaft, a plurality of discs are arranged on the disc seat along the circumferential direction, the crushing cavity is provided with a tooth cylinder surrounding the disc seat, and a crushing channel is formed between the discs and the tooth ring;

the nail disc assembly comprises a rotor arranged on the main shaft and a stator arranged on the inner wall of the shell, wherein a plurality of groups of crushing columns are arranged on one side, facing the stator, of the rotor along the circumferential direction, crushing nails staggered with the crushing columns are arranged on one side, facing the rotor, of the stator, and a scattering channel is formed between the stator and the rotor;

the feeding channel, the discharging channel, the crushing channel and the scattering channel form a material channel together.

Through adopting above-mentioned technical scheme, it is rotatory under drive assembly's drive to work the main shaft, the powder enters into the casing from feedstock channel under the effect of negative pressure, then enter into crushing passageway in, the video disc rotates at a high speed under the drive of main shaft, it rises to drive the high-speed heliciform of powder material, form huge centrifugal force, simultaneously, the spiral rises in-process, powder constantly and tooth section of thick bamboo and the fast rotation produce huge impact, frictional force between the video disc, make the material broken up and depolymerize, then the material enters into the channel of breaing up, receive the impact of the broken post of high-speed rotation, receive the friction simultaneously between broken nail, broken post, the effect of shearing, make the material further broken up, it is better to break up and smash the effect.

Optionally, discharging channel is provided with the screening subassembly, the screening subassembly is including being the separation fill that the toper set up, be provided with the entry of being connected with discharging channel on the separation fill lateral wall, the awl tip of separation fill is provided with the row's cinder notch with feedstock channel intercommunication, the one end that the blanking mouth was kept away from to the separation fill is provided with the export.

Through adopting above-mentioned technical scheme, after the material after smashing entered into the separation and fights, formed the vortex in the separation fill, the great material of granularity can discharge from the slag notch under the effect of centrifugal force and gravity, then enters into again through feedstock channel and smashes the intracavity and smashes, has improved the crushing precision to the material.

Optionally, the crushing columns are arranged on the rotor in a plurality of rings with the main shaft as the center, and the crushing nails are located between adjacent rings.

Through adopting above-mentioned technical scheme, the material can receive impact many times, the collision of broken nail and broken post when breaking up the passageway, and crushing effect is better.

Optionally, one end of the main shaft close to the feeding channel is provided with a wind wheel disc, and one side of the wind wheel disc facing the feeding channel is provided with at least one blade along the circumferential direction.

Through adopting above-mentioned technical scheme, it is rotatory to drive the blade in main shaft rotation process, can treat that the processing material produces towards the effort of smashing the intracavity, increases the handling capacity of smashing the chamber, improves the crushing efficiency of smashing the chamber.

Optionally, a flexible gasket is arranged between the gear cylinder and the housing.

Through adopting above-mentioned technical scheme, can constantly strike a tooth section of thick bamboo at crushing in-process material, through setting up flexible gasket, avoid a tooth section of thick bamboo direct and casing collision, can play buffering and absorbing effect.

Optionally, the disk seat includes two parallel connection plates, the disk is located between the two connection plates, two ends of the disk are respectively provided with an insertion block, the connection plate is provided with an insertion groove engaged with the insertion block, and the two connection plates are fixedly connected through a pull rod.

Through adopting above-mentioned technical scheme, the joint is in the dish seat respectively at the video disc both ends, can make the video disc comparatively stable in rotatory kibbling process, and difficult emergence is rocked.

Optionally, the disc is provided with a material passing hole in a penetrating manner.

Through adopting above-mentioned technical scheme, at crushing in-process, the material can pass the punishment in advance hole, shears the material, and crushing effect is better.

Optionally, the driving assembly comprises a motor fixed on the base, a first belt wheel is fixed on an output shaft of the motor, a second belt wheel is fixed on the spindle, and a belt is sleeved between the first belt wheel and the second belt wheel in a tensioning manner.

Through adopting above-mentioned technical scheme, the motor passes through the belt and drives the main shaft rotation, and belt drive has elasticity, can alleviate impact and vibration load, operates steadily, and the noise is lower, is suitable for the factory production.

Optionally, be provided with the tensioning subassembly on the base, the tensioning subassembly includes the slide, the motor is fixed on the slide, waist shape hole has been seted up on the slide, waist shape is downthehole wear to be equipped with the locking bolt with base threaded connection, it is connected with the parallel tensioning rod with waist type groove length direction to rotate on the base, be fixed with the regulation seat with tensioning rod threaded connection on the slide.

Through adopting above-mentioned technical scheme, the band pulley is leaned on the frictional force transmission, nevertheless is elongated after working a period and becomes the pine, skids easily, and tensioning assembly can carry out the tensioning to the belt to the guarantee can normally work, avoids skidding.

Optionally, an impeller is fixed at one end of the main shaft close to the feeding channel, and the impeller includes two symmetrically arranged wing plates.

Through adopting above-mentioned technical scheme, can drive impeller synchronous revolution at the rotatory in-process of main shaft, high-speed rotatory impeller can be with entering into the material from feedstock channel and tentatively break up, makes the distribution that the material can be even smash the intracavity.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the nail disc assembly and the disc assembly are arranged in the crushing cavity, so that the materials can be crushed for multiple times, the materials are scattered and depolymerized, and the crushing effect is good;

2. by arranging the screening assembly, materials with larger particles can be separated, the materials with the larger particles are conveyed to the feeding channel and then enter the crushing cavity to be crushed again, and the crushing effect is further improved;

3. through setting up wind wheel dish and blade, it is rotatory to drive the blade in main shaft rotation process, can treat that the processing material produces towards the effort of smashing the intracavity, increases the handling capacity of smashing the chamber, improves the crushing efficiency of smashing the chamber.

Drawings

FIG. 1 is a front view of a pin nest mill according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic sectional view of FIG. 1

FIG. 4 is a schematic view of the connection structure of the spindle, the disk assembly and the nail disk assembly in FIG. 3;

FIG. 5 is a schematic illustration of an exploded configuration of the disc pack of FIG. 3;

FIG. 6 is an exploded view of the staple tray assembly of FIG. 3.

Description of reference numerals: 1. a base; 2. a housing; 3. a drive assembly; 31. a motor; 32. a first pulley; 33. a second pulley; 34. a belt; 4. a tension assembly; 41. a slide plate; 42. a waist-shaped hole; 43. locking the bolt; 44. a tension rod; 45. an adjusting seat; 5. a screening component; 51. a separating hopper; 52. a collection hopper; 53. an inlet; 54. an outlet; 55. a baffle plate; 56. a slag discharge port; 57. a discharge pipe; 58. a support; 59. straightening plates; 6. a disk assembly; 61. a disk seat; 62. a connecting plate; 63. a disc; 64. a pull rod; 65. a material passing hole; 66. a gear cylinder; 7. a nail plate assembly; 71. a stator; 72. a rotor; 73. crushing the column; 74. crushing nails; 9. a feed channel; 10. a discharge channel; 11. a grinding chamber; 12. a main shaft; 13. a bearing; 14. a bearing housing; 15. a first connecting sleeve; 16. an impeller; 17. a wind wheel disc; 18. a blade; 19. mounting grooves; 20. and (7) a gasket.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example one

The embodiment of the application discloses a nail nest mill.

Referring to fig. 1, a nail nest grinds, be applicable to the crushing and scattering of powdery material, including base 1, base 1 upper surface is fixed with casing 2, one side of keeping away from casing 2 on base 1 is provided with drive assembly 3 and tensioning assembly 4, the bottom of casing 2 is provided with the feedstock channel 9 that is used for the material loading, the top of casing 2 is provided with discharging

channel

10, 2 inner chambers of casing form crushing chamber 11, still be provided with the screening subassembly 5 with discharging channel 10 intercommunication on the base 1, the material enters into crushing chamber 11 from feedstock channel 9 under the effect of negative pressure, smash the back in crushing chamber 11, rethread discharging channel 10 enters into screening subassembly 5 and screens.

Referring to fig. 2 and 3, a cavity is formed in the lower surface of the base 1, a spindle 12 is vertically arranged in the housing 2, the spindle 12 penetrates through the base 1 from top to bottom and extends into the inner cavity of the base 1, and a bearing 13 is arranged between the spindle 12 and the base 1 to reduce friction.

The driving assembly 3 comprises a motor 31 installed on the upper surface of the base 1, an output shaft of the motor 31 penetrates through the base 1 and extends into the inner cavity of the base 1, a first belt wheel 32 is fixed at one end, located in the inner cavity of the base 1, of the output shaft of the motor 31, a second belt wheel 33 which is located on the same plane as the first belt wheel 32 is fixed on the spindle 12, and a belt 34 is sleeved on the first belt wheel 32 and the second belt wheel 33 in a common tensioning mode. When the motor 31 is powered on, it can drive the first pulley 32 to rotate, and further drive the main shaft 12 to rotate through the belt 34.

Tensioning assembly 4 is including setting up the slide 41 at base 1 upper surface, and motor 31 is fixed on slide 41, has seted up waist shape hole 42 on slide 41, wear to be equipped with in waist shape hole 42 with base 1 threaded connection's locking bolt 43, rotate on the base 1 lateral wall and be connected with tensioning rod 44, tensioning rod 44 is parallel with waist type groove length direction, and the base 1 inner chamber is worn to establish by one end, slide 41 is fixed with regulation seat 45 towards one side of base 1 inner chamber, adjusts seat 45 and tensioning rod 44 threaded connection.

When the belt 34 becomes loose, the tension rod 44 is rotated to make the tension rod 44 slide the slide plate 41 to the side away from the main shaft 12, and the distance between the output shaft of the motor 31 and the main shaft 12 is increased to tighten the belt 34.

Referring to fig. 4, a bearing 13 sleeve is fixed on the upper surface of the base 1, the bearing 13 sleeve is arranged on the bearing 13 to protect the bearing 13, the bearing 13 sleeve is arranged on the main shaft 12, and a first connecting sleeve 15 is fixed on the upper surface of the bearing 13 sleeve through a bolt. One side of the first connecting sleeve 15, which is far away from the bearing 13 sleeve, is fixed with an impeller 16 through a bolt, the impeller 16 is in a diamond shape and comprises two wing plates, and the two wing plates are symmetrically arranged by taking the main shaft 12 as a symmetric center.

The top of impeller 16 is provided with wind wheel dish 17, and wind wheel dish 17 is fixed on main shaft 12, and wind wheel dish 17 is provided with a plurality of blades 18 along circumference towards one side of impeller 16, can drive blade 18 rotatory at the rotatory in-process of main shaft 12, can treat that the processing material produces towards the effort in smashing chamber 11, increases the handling capacity of smashing chamber 11, improves the crushing efficiency of smashing chamber 11.

The top of wind wheel dish 17 is provided with dish subassembly 6, dish subassembly 6 top is provided with nail dish subassembly 7, dish subassembly 6 includes along the main shaft 12 axis direction two dish seats 61 of setting on main shaft 12, dish seat 61 includes two parallel arrangement's connecting plate 62, connecting plate 62 is fixed on main shaft 12, the connecting plate 62 that is located the below passes through the bolt fastening on wind wheel dish 17, be provided with a plurality of video discs 63 along circumference between two connecting plates 62 of same group dish subassembly 6, video disc 63 is the rectangle, the both ends of video disc 63 are fixed with the grafting piece respectively, the edge of connecting plate 62 is seted up with grafting piece joint complex inserting groove.

Referring to fig. 5, a plurality of sets of pull rods 64 are arranged between two connecting plates 62 of the same set of disc assemblies 6, the pull rods 64 are evenly spaced along the circumferential direction of the connecting plates 62, and two ends of each pull rod 64 are fixed on one connecting plate 62 through bolts, so that the distance between the two connecting plates 62 is kept constant, and the discs 63 are prevented from falling off from the connecting plates 62.

The center of the disc 63 is provided with a material passing hole 65 in a penetrating way, so that materials can be subjected to shearing friction through the material passing hole 65, and the passing speed of the materials is increased. The crushing cavity is provided with a toothed cylinder 66 surrounding the disc seat 61, tooth grooves are formed in the inner wall of the toothed cylinder 66, a crushing channel is formed between the disc 63 and the gear ring, when materials pass through the crushing channel, the connecting plate 62 synchronously rotates along with the main shaft 12, the disc 63 is further driven to rotate, the disc 63 drives the powder materials to spirally rise at a high speed to form centrifugal force, and meanwhile, in the spiral rising process, huge collision force and friction force are continuously generated between the powder and the toothed cylinder 66 and the rapidly rotating disc 63, so that the materials are scattered.

Two adjacent dish seats 61 are fixedly connected, and the dish pieces 63 on two dish seats 61 are arranged in a staggered manner, so that the materials continuously pass through two crushing channels, and the dish pieces 63 of the two crushing channels are staggered, so that the material crushing effect is better.

In crushing in-process, the material can constantly collide with a tooth section of thick bamboo 66, in order to reduce the vibration of a tooth section of thick bamboo 66, the noise reduction, a plurality of mounting grooves 19 have evenly been seted up along circumference on the outer wall of a tooth section of thick bamboo 66, mounting groove 19 internal fixation has flexible gasket 20, gasket 20 is the rubber material, when a tooth section of thick bamboo 66 receives the impact of material, gasket 20 can cushion a tooth section of thick bamboo 66, avoid tooth section of thick bamboo 66 direct with casing 2 collision, can play buffering and absorbing effect.

Referring to fig. 6, the nail plate assembly 7 includes a rotor 72 fixed on the main shaft 12 and a stator 71 fixed on the inner wall of the housing 2, the rotor 72 is in a disc shape, a plurality of sets of crushing columns 73 are arranged on one side of the rotor 72 facing the stator 71 along the circumferential direction, and the crushing columns 73 are in a rectangular parallelepiped shape. Stator 71 is ring-shaped and parallel with rotor 72, and one side of stator 71 towards rotor 72 is provided with broken nail 74 along circumference, and broken nail 74 is cylindrically, and the distance of broken nail 74 and main shaft 12 is different with the distance between broken post 73 and main shaft 12, and broken post 73 arranges into a plurality of annulars that use main shaft 12 as the centre of a circle on rotor 72, and broken nail 74 is located between the adjacent annulars, makes rotor 72 can not collide with broken post 73 in the rotation process broken nail 74.

Form between stator 71 and the rotor 72 and break up the passageway, at the during operation, the initiative drives stator 71 high-speed rotatory, and the material receives broken initiative impact, receives friction, the effect of shearing simultaneously between broken nail 74, broken post 73, and the material is when entering into the passageway of breaking up from smashing the passageway simultaneously, from vertical spiral shell screwing in movement become horizontal spiral shell screwing in movement, makes that the material can be comparatively even smashed, is difficult for appearing some materials and not by the kibbling condition.

Referring to fig. 3, the screening component 5 includes the separating hopper 51, the separating hopper 51 is the toper setting, the conical tip portion of the separating hopper 51 sets up downwards and is connected with the aggregate bin 52, be provided with the entry 53 of being connected with discharging channel 10 on the separating hopper 51 lateral wall, entry 53 is tangent with the separating hopper 51, the one end that the blanking mouth was kept away from to the separating hopper 51 is provided with export 54, form on the inner wall of separating hopper 51 has the spiral strip, the material after smashing enters into the separating hopper 51 from entry 53 under the effect of negative pressure in, the powder is helical motion along the inner wall of separating hopper 51, under the effect of centrifugal force and spiral strip, the material that the granularity is great enters into the aggregate bin 52 downwards, the material that the granularity is less is discharge from export 54 along with the air rebound together.

Slag discharge port 56 with feedstock channel 9 intercommunication is seted up to collecting hopper 52 bottom, and slag discharge port 56 sliding connection has baffle 55, and when the material accumulation in collecting hopper 52 was more, sliding baffle 55 can open slag discharge port 56, makes the large granule material in the collecting hopper 52 can enter into feedstock channel 9 in, then smashes once more, has further promoted crushing effect.

In order to prevent the material from directly entering the outlet 54 from the inlet 53, the outlet 54 is fixed with a discharge pipe 57, one end of the discharge pipe 57 extends into the separating hopper 51, and the bottom end of the discharge pipe 57 is located below the feeding port. The material, as it enters the separating hopper 51 from the inlet 53, is directed against the side wall of the discharge conduit 57 and does not pass directly into the outlet 54.

The powder can be the spiral flow in through separating hopper 51 back, is provided with the alignment mechanism in arranging material pipe 57, the alignment mechanism is including fixing support 58 in arranging material pipe 57, rotates the pivot of connecting with vertical setting on support 58, is fixed with two alignment boards 59 in the pivot, and two alignment boards 59 mutually perpendicular set up make the material after smashing can be comparatively steady when the discharge.

The implementation principle of nail nest mill of the embodiment of the application is as follows: when the crushing device is used, the first motor 31 is connected with an external power supply to drive the first belt pulley 32 to rotate, the main shaft 12 is driven to rotate through the belt 34, the outlet 54 is connected with a negative pressure source, the powdery material enters the crushing cavity 11 from the feeding channel 9 under the action of negative pressure and then enters the crushing channel, the disc 63 is driven by the main shaft 12 to rotate at a high speed to drive the powdery material to spirally rise at a high speed, meanwhile, collision and friction force are continuously generated between the powdery material and the tooth cylinder 66 and the rotating disc 63 to crush the powdery material, then the powdery material enters the scattering channel, the crushing column 73 on the rotor 72 impacts the powdery material again, and meanwhile, friction and shearing actions are exerted between the crushing nail 74 and the crushing column 73 to further scatter the powdery material.

The material after smashing enters into separating hopper 51 from entry 53 under the effect of negative pressure in, the powder is helical motion along separating hopper 51's inner wall, under the effect of centrifugal force and helical strip, the great material of granularity enters into in the collecting hopper 52 downwards, the less material of granularity is discharged from export 54 along with the air rebound together, the great material of granularity enters into collecting hopper 52 downwards, when collecting hopper 52's material pile is more, slide damper 55 can open row cinder notch 56, make the large granule material in the collecting hopper 52 can enter into feed channel 9, then smash once more.

Example two

The difference between the present embodiment and the first embodiment is: the feeding channel is provided with an air inlet, and materials can enter the crushing cavity through the feeding channel and can be injected with hot air or additives through the air inlet. When hot air is injected through the air inlet, the temperature of the hot air reaches 400 ℃, and the powder can be dried, so that the powder is more easily scattered. When the additive is injected through the air inlet, the additive is a modifier or a surface coating agent so as to improve the performance of the material.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a nail nest grinds which characterized in that: the grinding device comprises a shell (2), wherein a feeding channel (9) is arranged at the bottom end of the shell (2), a discharging channel (10) is arranged at the top end of the shell (2), a grinding cavity (11) is formed in the inner cavity of the shell (2), a main shaft (12) is arranged in the grinding cavity (11), a nail disc assembly (7) and a disc assembly (6) are arranged on the main shaft (12), and one end of the main shaft (12) is produced to the outside of the shell (2) and is connected with a driving assembly (3);

the disc assembly (6) comprises at least one disc seat (61) arranged on the main shaft (12) along the axial direction of the main shaft (12), a plurality of discs (63) are arranged on the disc seat (61) along the circumferential direction, the crushing cavity is provided with a tooth cylinder (66) surrounding the disc seat (61), and a crushing channel is formed between the discs (63) and the tooth ring;

the nail disc assembly (7) comprises a rotor (72) arranged on the main shaft (12) and a stator (71) arranged on the inner wall of the shell (2), wherein a plurality of groups of crushing columns (73) are arranged on one side, facing the stator (71), of the rotor (72) along the circumferential direction, crushing nails (74) which are staggered with the crushing columns (73) are arranged on one side, facing the rotor (72), of the stator (71), and a scattering channel is formed between the stator (71) and the rotor (72);

the feeding channel (9), the discharging channel (10), the crushing channel and the scattering channel form a material channel together.

2. The nail nest mill of claim 1, wherein: discharging channel (10) are provided with screening subassembly (5), screening subassembly (5) are including separation fill (51) that is the toper setting, be provided with entry (53) of being connected with discharging channel (10) on separation fill (51) lateral wall, the awl tip of separation fill (51) is provided with row's cinder notch (56) with feedstock channel (9) intercommunication, the one end that the blanking mouth was kept away from in separation fill (51) is provided with export (54).

3. The nail nest mill of claim 1, wherein: the crushing columns (73) are arranged on the rotor (72) into a plurality of rings with the main shaft (12) as the center, and the crushing nails (74) are positioned between the adjacent rings.

4. The nail nest mill of claim 1, wherein: the wind wheel disc is characterized in that one end, close to the feeding channel (9), of the main shaft (12) is provided with a wind wheel disc (17), and at least one blade (18) is arranged on one side, facing the feeding channel (9), of the wind wheel disc (17) in the circumferential direction.

5. The nail nest mill of claim 1, wherein: a flexible gasket (20) is arranged between the gear cylinder (66) and the shell (2).

6. The nail nest mill of claim 1, wherein: the disc seat (61) comprises two parallel connecting plates (62), the disc (63) is located between the two connecting plates (62), the two ends of the disc (63) are respectively provided with an inserting block, the connecting plates (62) are provided with inserting grooves matched with the inserting blocks in a clamping mode, and the two connecting plates (62) are fixedly connected through a pull rod (64).

7. The nail nest mill of claim 6, wherein: the disc (63) is provided with a material passing hole (65) in a penetrating way.

8. The nail nest mill of claim 1, wherein: the driving assembly (3) comprises a motor (31), a first belt wheel (32) is fixed on an output shaft of the motor (31), a second belt wheel (33) is fixed on the main shaft (12), and a belt (34) is arranged between the first belt wheel (32) and the second belt wheel (33) in a tensioning sleeved mode.

9. The pin nest mill of claim 8, wherein: still be provided with base (1), be provided with tensioning assembly (4) on base (1), tensioning assembly (4) are including slide (41), motor (31) are fixed on slide (41), waist shape hole (42) have been seted up on slide (41), wear to be equipped with in waist shape hole (42) with base (1) threaded connection's locking bolt (43), it is connected with tensioning rod (44) parallel with waist type groove length direction to rotate on base (1), be fixed with on slide (41) with tensioning rod (44) threaded connection's regulation seat (45).

10. The nail nest mill of claim 1, wherein: an impeller (16) is fixed at one end of the main shaft (12) close to the feeding channel (9), and the impeller (16) comprises two wing plates which are symmetrically arranged.