CN218609640U - Wood material hammer mill - Google Patents

Abstract

The utility model relates to a technical field of wooden material hammer mill, especially, relate to a wooden material hammer mill, it carries out the material loading through loading attachment to timber, screening plant filters debris such as stone in the timber and iron wire and then discharges the timber into the hammer mill feed inlet, dust extraction cooperation discharge device separates saw-dust and dust with filter equipment, artificial working strength has been reduced, screen foreign matters such as stone or iron wire simultaneously, avoid causing equipment damage, security and equipment stability in use have been improved, screen saw-dust and dust after smashing simultaneously, the work environment has been protected, subsequent work load has been reduced, the processing of saw-dust in the later stage is made things convenient for and the utilization; the hammer mill is fixedly arranged at the top end of the base; the device also comprises a feeding device, a screening device, a dust suction device, a discharging device and a filtering device.

Description

Wood material hammer mill

Technical Field

The utility model relates to a technical field of wooden material hammer mill especially relates to a wooden material hammer mill.

Background

A wooden material hammer mill is an auxiliary device for a wooden material hammer mill, which is widely used in the field of wooden material hammer milling; the existing hammer mill for wood materials comprises a base and a hammer mill, wherein the hammer mill is fixedly arranged at the top end of the base; when the existing wood material hammer mill is used, firstly, a driving motor on the hammer mill is started, a rotating shaft and a hammer sheet on the rotating shaft are driven to rotate at a high speed through the driving motor, then, wood is manually added into the hammer mill through a feed port on the hammer mill, the wood is repeatedly hammered and sheared through the hammer sheet, and the wood is crushed into particles and then is discharged through a discharge port on the right side of the hammer mill; present wooden material hammer mill is using to discover, present equipment carries out the material loading through the manual work, can thoughtlessly have foreign matter such as stone or iron wire in the wooden material simultaneously, untreated direct addition hammer mill is built-in can cause the hammer mill inside to collapse, influence equipment life, increase investment cost, there is the potential safety hazard, influence work efficiency, can produce a large amount of dusts and saw-dust when the discharge gate discharges after timber is smashed simultaneously and mix, influence operational environment, dust and after smashing simultaneously mix the influence later stage reuse with the saw-dust, subsequent work load has been increased, the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a carry out the material loading through loading attachment to timber, debris such as stone in the screening plant filters the back with timber such as iron wire in the hammer mill feed inlet, dust extraction cooperation discharge device and filter equipment separate saw-dust and dust, artificial working strength has been reduced, simultaneously screen foreign matter such as stone or iron wire, avoid causing equipment to damage, security and equipment stability have been improved, simultaneously screen saw-dust and dust after smashing, the operational environment has been protected, subsequent work load has been reduced, the processing of later stage to the saw-dust is utilized, the operational environment has been protected, subsequent work load has been reduced, a wooden material hammer mill of later stage to the processing utilization of saw-dust has been made things convenient for.

The utility model relates to a wooden material hammer mill, which comprises a base and a hammer mill, wherein the hammer mill is fixedly arranged at the top end of the base; the wood dust separation device comprises a base, a screening device, a dust collection device, a discharge device and a filtering device, wherein the feeding device is fixedly installed at the top end of the base, the screening device is installed at the top end of the base and is positioned below the right part of the feeding device, the right part of the screening device is positioned above a feed inlet of a hammer mill, the dust collection device is installed at the bottom end of the base and is positioned on the right side of the hammer mill and is connected with a discharge port of the hammer mill, the discharge device and the filtering device are installed on the dust collection device, the feeding device is used for feeding wood, the screening device is used for filtering sundries such as stones and iron wires in the wood and then discharging the wood into the feed inlet of the hammer mill, and the dust collection device is matched with the discharge device and the filtering device to separate wood dust and dust; at first start loading attachment, place timber on loading attachment, add timber to screening plant through loading attachment, start screening plant sieves debris such as stone in the timber and iron wire, then add timber to the hammer mill through the feed inlet on the hammer mill, start the driving motor on the hammer mill, it is rotatory to carry out hammering repeatedly and shearing to timber with the epaxial hammer leaf high speed of pivot to drive through driving motor, discharge into to dust extraction through the discharge gate on the hammer mill right side after breaking into graininess, start dust extraction cooperation loading attachment frame and filter the dust, accomodate the dust through filter equipment with the dust, discharge the saw-dust through row material device, artificial working strength has been reduced, simultaneously sieve foreign matters such as stone or iron wire, avoid causing equipment damage, security and equipment stability in use have been improved, simultaneously sieve saw-dust and dust after smashing, work environment has been protected, subsequent work load has been reduced, the processing utilization of later stage to the saw-dust has been made things convenient for.

Preferably, the feeding device comprises a feeding device frame, a plurality of rotating shafts, a plurality of chain wheels, a chain, a transmission belt, a plurality of baffles and a first motor, the feeding device frame is fixedly installed at the top end of the base through a support, a groove is formed in the feeding device frame, the front ends and the rear ends of the plurality of rotating shafts are rotatably installed at the front ends and the rear ends in the groove of the feeding device frame, the front ends of the plurality of rotating shafts are concentrically provided with the chain wheels, the chain is tensioned and sleeved on all the chain wheels, the transmission belt is tensioned and sleeved on all the rotating shafts, the transmission belt is provided with the plurality of baffles, the first motor is fixedly installed on the rear side wall of the feeding device frame, and the output end of the first motor penetrates through the rear side wall of the feeding device frame to be concentrically connected with the rear end of one rotating shaft; open first motor, first motor drives rather than the rotation axis rotation of being connected, it is rotatory that rotatory rotation axis drives the sprocket that its front end set up, it is rotatory that the sprocket passes through the whole sprocket of chain drive, it is rotatory that whole sprocket drives whole rotation axis, it is rotatory to drive the reciprocal drive belt through whole rotation axis rotation, place timber on the drive belt through the staff, support timber through the baffle, and then drive timber and add to screening plant in, artificial working strength has been reduced, equipment use integrality and convenience have been improved.

Preferably, the screening device comprises a plurality of supporting legs, a plurality of springs, a plurality of connecting frames, a screening frame, a plurality of electromagnets, a screen and two vibration motors, wherein the bottom ends of the supporting legs are fixedly arranged at the top end of the base, the bottom ends of the springs are respectively and fixedly arranged at the top ends of the supporting legs, the top ends of the springs are respectively and fixedly connected with the bottom ends of the connecting frames, telescopic rods are respectively arranged in the springs, the side walls of the connecting frames are respectively and fixedly connected with the front side wall and the rear side wall of the screening frame, a material conveying port is arranged on the right side wall of the screening frame, an access door is arranged on the front side wall of the screening frame, the electromagnets are respectively and fixedly arranged on the side walls in the screening frame, the screen is fixedly arranged in the screening frame, and the two vibration motors are fixedly arranged at the left part of the bottom end of the screening frame; open two vibrating motor, drive the vibrations of screening frame through two vibrating motor, improve vibration amplitude through a plurality of springs, be connected a plurality of electro-magnets with external power source, timber gets into the back in the screening frame, drive timber vibrations through screening frame vibrations, debris such as stone in to timber are sieved through the screen cloth, pass stone and debris and get into to screening frame bottom, adsorb iron wire that mixes in the timber etc. through the electro-magnet, timber after screening debris through the defeated material mouth adds the feed inlet to the hammer mill, the stability of equipment usage has been improved, avoid debris such as stone to get into the hammer mill and cause the hammer mill to damage in, hammer mill's sustainable operation nature and life have been protected, equipment usage security has been improved.

Preferably, the dust collection device comprises a dust collection bin, a feeding pipe and a fan, the dust collection bin is fixedly installed at the top end of the base, a cavity is arranged in the dust collection bin, a sealing door is arranged on the front side wall of the dust collection bin, the feeding pipe is fixedly installed on the left side wall of the dust collection bin, the output end of the feeding pipe penetrates through the left side wall of the dust collection bin to enter the cavity of the dust collection bin, the input end of the feeding pipe is connected with a discharge port on the hammer mill, the fan is fixedly installed on the right side wall of the dust collection bin, an air pipe is arranged on the fan, the input end of the air pipe penetrates through the right side wall of the dust collection bin to enter the cavity, and the discharge device and the filtering device are installed on the dust collection bin; after the hammer mill is smashed, the wood chips and the generated dust pass through the discharge port and the inlet pipe to enter the cavity, the fan is opened, air in the cavity is discharged through the air pipe, a negative pressure state is formed in the cavity, the wood chips and the dust are separated through the filter device, and the use integrity and the practicability of the equipment are improved.

Preferably, the filtering device comprises a first filter screen, a second filter screen and a dust collecting drawer, the top ends and the bottom ends of the first filter screen and the second filter screen are fixedly arranged at the top end and the bottom end in the cavity of the dust collection bin, the second filter screen is positioned at the right side of the first filter screen, and the dust collecting drawer is slidably arranged at the bottom end in the cavity and positioned at the right side of the first filter screen and the left side of the second filter screen; saw-dust and dust enter into to dust absorption storehouse indoor back, filter dust and air through first filter screen, filter the air through the second filter screen, with the air escape, the saw-dust descends to discharge apparatus in through the effect of gravity, discharge through discharge apparatus, the dust is accomodate in the steamer tray is accomodate to the dust through the effect of gravity, dust in accomodating the steamer tray is handled to the dust through regularly opening the sealing door on the dust absorption storehouse, work environment has been protected, the environmental protection of equipment has been improved.

Preferably, the discharging device comprises a discharging groove, a second motor and a spiral blade, the discharging groove is fixedly arranged at the bottom end in the cavity of the dust collection bin and is positioned at the left side of the first filter screen, the second motor is fixedly arranged on the rear side wall of the dust collection bin, the output end of the second motor penetrates through the rear side wall of the dust collection bin to enter the cavity and is concentrically connected with one end of the spiral blade, and the front side wall of the dust collection bin is provided with a discharging opening; the saw-dust descends to the bin outlet in through the effect of gravity, opens the second motor, and the second motor drives helical blade rotatory, and the saw-dust that drives in the bin outlet through helical blade rotation is carried forward, discharges to outside storage device through the bin outlet, and improve equipment convenience in use has improved equipment convenience in use.

Preferably, a transparent material observation window is arranged on the front side wall of the dust collection bin; through the arrangement, working conditions in the dust collection chamber can be observed conveniently by workers, and the convenience and the stability of the use of the equipment are improved.

Compared with the prior art, the beneficial effects of the utility model are that: at first start loading attachment, place timber on loading attachment, add timber to screening plant through loading attachment, start screening plant sieves debris such as stone in the timber and iron wire, then add timber to the hammer mill through the feed inlet on the hammer mill, start the driving motor on the hammer mill, it is rotatory to carry out hammering repeatedly and shearing to timber with the epaxial hammer leaf high speed of pivot to drive through driving motor, discharge into to dust extraction through the discharge gate on the hammer mill right side after breaking into graininess, start dust extraction cooperation loading attachment frame and filter the dust, accomodate the dust through filter equipment with the dust, discharge the saw-dust through row material device, artificial working strength has been reduced, simultaneously sieve foreign matters such as stone or iron wire, avoid causing equipment damage, security and equipment stability in use have been improved, simultaneously sieve saw-dust and dust after smashing, work environment has been protected, subsequent work load has been reduced, the processing utilization of later stage to the saw-dust has been made things convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic axial sectional view of the structure of the dust suction device and the filter device;

FIG. 3 is an enlarged schematic view of the screening device;

FIG. 4 is a schematic view of the axial sectional structure of the feeding device;

FIG. 5 is a schematic top sectional view of the discharge device and the dust suction device;

in the drawings, the reference numbers: 1. a base; 2. a hammer mill; 3. a feeding device; 4. a screening device; 5. a dust collection device; 6. a loading device frame; 7. a rotating shaft; 8. a sprocket; 9. a chain; 10. a transmission belt; 11. a baffle plate; 12. a first motor; 13. supporting legs; 14. a spring; 15. a connecting frame; 16. screening the frame; 17. an electromagnet; 18. screening a screen; 19. a vibration motor; 20. a dust collection bin; 21. a feed pipe; 22. a fan; 23. a first filter screen; 24. a second filter screen; 25. a dust collection drawer; 26. a discharge chute; 27. a second motor; 28. a helical blade.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The utility model relates to a wooden material hammer mill, which comprises a base 1 and a hammer mill 2, wherein the hammer mill 2 is fixedly arranged at the top end of the base 1; the wood-wood separation device comprises a base 1, a feeding device 3, a screening device 4, a dust collection device 5, a discharge device and a filtering device, wherein the feeding device 3 is fixedly installed at the top end of the base 1, the screening device 4 is installed at the top end of the base 1 and is located below the right portion of the feeding device 3, the right portion of the screening device 4 is located above a feed inlet of a hammer mill 2, the dust collection device 5 is installed at the bottom end of the base 1 and is located on the right side of the hammer mill 2 and is connected with a discharge outlet of the hammer mill 2, the discharge device and the filtering device are installed on the dust collection device 5, the feeding device 3 feeds wood, the screening device 4 filters sundries such as stones and iron wires in the wood and then discharges the wood into the feed inlet of the hammer mill 2, and the dust collection device 5 is matched with the discharge device and the filtering device to separate the wood chips and the dust; the feeding device 3 comprises a feeding device frame 6, a plurality of rotating shafts 7, a plurality of chain wheels 8, a chain 9, a transmission belt 10, a plurality of baffles 11 and a first motor 12, the feeding device frame 6 is fixedly installed at the top end of the base 1 through a support, a groove is formed in the feeding device frame 6, the front ends and the rear ends of the rotating shafts 7 are rotatably installed at the front end and the rear end in the groove of the feeding device frame 6, the chain wheels 8 are concentrically arranged at the front ends of the rotating shafts 7, the chain 9 is tensioned and sleeved on all the chain wheels 8, the transmission belt 10 is tensioned and sleeved on all the rotating shafts 7, the transmission belt 10 is provided with the baffles 11, the first motor 12 is fixedly installed on the rear side wall of the feeding device frame 6, and the output end of the first motor 12 penetrates through the rear side wall of the feeding device frame 6 to be concentrically connected with the rear end of one rotating shaft 7; the screening device 4 comprises a plurality of supporting legs 13, a plurality of springs 14, a plurality of connecting frames 15, a screening frame 16, a plurality of electromagnets 17, a screen 18 and two vibration motors 19, wherein the bottom ends of the supporting legs 13 are fixedly arranged at the top end of the base 1, the bottom ends of the springs 14 are respectively and fixedly arranged at the top ends of the supporting legs 13, the top ends of the springs 14 are respectively and fixedly connected with the bottom ends of the connecting frames 15, telescopic rods are respectively arranged in the springs 14, the side walls of the connecting frames 15 are respectively and fixedly connected with the front side wall and the rear side wall of the screening frame 16, a material conveying port is arranged on the right side wall of the screening frame 16, an access door is arranged on the front side wall of the screening frame 16, the electromagnets 17 are respectively and fixedly arranged on the side wall in the screening frame 16, the screen 18 is fixedly arranged in the screening frame 16, and the two vibration motors 19 are fixedly arranged at the left part of the bottom end of the screening frame 16; the dust collection device 5 comprises a dust collection bin 20, a feeding pipe 21 and a fan 22, the dust collection bin 20 is fixedly installed at the top end of the base 1, a cavity is arranged in the dust collection bin 20, a sealing door is arranged on the front side wall of the dust collection bin 20, the feeding pipe 21 is fixedly installed on the left side wall of the dust collection bin 20, the output end of the feeding pipe 21 penetrates through the left side wall of the dust collection bin 20 to enter the cavity of the dust collection bin 20, the input end of the feeding pipe 21 is connected with a discharge hole in the hammer mill 2, the fan 22 is fixedly installed on the right side wall of the dust collection bin 20, an air pipe is arranged on the fan 22, the input end of the air pipe penetrates through the right side wall of the dust collection bin 20 to enter the cavity, and a discharge device and a filtering device are installed on the dust collection bin 20; the filter device comprises a first filter screen 23, a second filter screen 24 and a dust storage drawer 25, wherein the top ends and the bottom ends of the first filter screen 23 and the second filter screen 24 are fixedly arranged at the top end and the bottom end in the cavity of the dust suction bin 20, the second filter screen 24 is positioned at the right side of the first filter screen 23, and the dust storage drawer 25 is slidably arranged at the bottom end in the cavity and positioned at the right side of the first filter screen 23 and the left side of the second filter screen 24; the discharging device comprises a discharging groove 26, a second motor 27 and a helical blade 28, the discharging groove 26 is fixedly arranged at the bottom end in the cavity of the dust collection bin 20 and is positioned at the left side of the first filter screen 23, the second motor 27 is fixedly arranged on the rear side wall of the dust collection bin 20, the output end of the second motor 27 penetrates through the rear side wall of the dust collection bin 20 to enter the cavity and is concentrically connected with one end of the helical blade 28, and a discharging opening is formed in the front side wall of the dust collection bin 20; a transparent material observation window is arranged on the front side wall of the dust collection bin 20.

As shown in fig. 1 to 5, the utility model relates to a wood material hammer mill, when working, turn on the first motor 12, the first motor 12 drives the rotation shaft 7 connected with it to rotate, the rotating rotation shaft 7 drives the chain wheel 8 arranged at the front end to rotate, the chain wheel 8 drives all the chain wheels 8 to rotate through the chain 9, all the chain wheels 8 drive all the rotation shafts 7 to rotate, the driving belt 10 is driven to rotate back and forth through all the rotation shafts 7 to rotate, the wood is placed on the driving belt 10 through the working personnel, the wood is supported through the baffle 11, and then the wood is driven to be added into the screening frame 16, turn on two vibration motors 19, drive the screening frame 16 to vibrate through two vibration motors 19, improve the vibration amplitude through a plurality of springs 14, connect a plurality of electromagnets 17 with an external power supply, after the wood enters the screening frame 16, the wood is driven to vibrate through the screening frame 16 to drive the wood, screening sundries such as stones in wood through a screen 18, enabling the stones and the sundries to penetrate through the screen 18 and enter the bottom end of a screening frame 16, enabling iron wires and the like mixed in the wood to be adsorbed through an electromagnet 17, enabling the wood after the sundries are screened out to enter a hammer mill 2 through a conveying port, starting a driving motor on the hammer mill 2, driving a rotating shaft and a hammer sheet on the rotating shaft to rotate at a high speed through the driving motor to repeatedly hammer and shear the wood, discharging the wood after being crushed into particles into a cavity 20 of a dust collection bin through a discharge port and a feed pipe 21 on the right side of the hammer mill 2, opening a fan 22, discharging air in the cavity through an air pipe to enable the cavity to be in a negative pressure state, filtering dust and air through a first filter screen 23, and filtering the air through a second filter screen 24, with the air escape, the saw-dust descends to the bin outlet 26 in through the effect of gravity, and the dust descends to the dust and accomodates in the steamer tray 25 and accomodate through the effect of gravity, accomodates the dust in the steamer tray 25 through the sealing door on regularly opening dust absorption storehouse 20 to the dust and handles, opens second motor 27, and second motor 27 drives helical blade 28 rotatory, and the saw-dust that drives in the bin outlet 26 through the rotation of helical blade 28 is carried forward, discharges to outside storage device through the bin outlet.

The installation mode, the connection mode or the arrangement mode of the hammer mill for the wood material of the utility model are common mechanical modes, and the hammer mill can be implemented as long as the beneficial effects can be achieved; the utility model discloses a hammer mill 2, sprocket 8, chain 9, drive belt 10, first motor 12, electro-magnet 17, shock dynamo 19, fan 22, second motor 27 and helical blade 28 of wooden material hammer mill are purchase on the market, and this industry technical staff only need according to its subsidiary service instruction install and operate can, and need not the technical staff in this field and pay out creative work.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A hammer mill for wood materials comprises a base (1) and a hammer mill (2), wherein the hammer mill (2) is fixedly arranged at the top end of the base (1); the device is characterized by further comprising a feeding device (3), a screening device (4), a dust collecting device (5), a discharging device and a filtering device, wherein the feeding device (3) is fixedly installed at the top end of the base (1), the screening device (4) is installed at the top end of the base (1) and is located below the right portion of the feeding device (3), the right portion of the screening device (4) is located above a feed inlet of the hammer mill (2), the dust collecting device (5) is installed at the bottom end of the base (1) and located on the right side of the hammer mill (2) and connected with a discharge outlet of the hammer mill (2), the discharging device and the filtering device are installed on the dust collecting device (5), the feeding device (3) feeds wood, the screening device (4) filters the stone mill and iron wires in the wood and then discharges the wood into the feed inlet of the hammer mill (2), and the dust collecting device (5) is matched with the discharging device to separate the wood chips and the dust.

2. The wood material hammermill according to claim 1, wherein the feeding device (3) comprises a feeding device frame (6), a plurality of rotating shafts (7), a plurality of chain wheels (8), a chain (9), a transmission belt (10), a plurality of baffles (11) and a first motor (12), the feeding device frame (6) is fixedly installed at the top end of the base (1) through a support, a groove is formed in the feeding device frame (6), the front ends and the rear ends of the rotating shafts (7) are rotatably installed at the front ends and the rear ends in the groove of the feeding device frame (6), the chain wheels (8) are concentrically arranged at the front ends of the rotating shafts (7), the chain (9) is tensioned and sleeved on all the chain wheels (8), the transmission belt (10) is tensioned and sleeved on all the rotating shafts (7), the baffles (11) are arranged on the transmission belt (10), the first motor (12) is fixedly installed on the rear side wall of the feeding device frame (6), and the output end of the first motor (12) penetrates through the rear side wall of the feeding device frame (6) and is concentrically connected with the rear end of the rotating shaft (7).

3. The wood material hammer mill according to claim 2, wherein the screening device (4) comprises a plurality of supporting legs (13), a plurality of springs (14), a plurality of connecting frames (15), a screening frame (16), a plurality of electromagnets (17), a screen (18) and two vibrating motors (19), the bottom ends of the supporting legs (13) are fixedly mounted at the top end of the base (1), the bottom ends of the springs (14) are fixedly mounted at the top ends of the supporting legs (13) respectively, the top ends of the springs (14) are fixedly connected with the bottom ends of the connecting frames (15) respectively, telescopic rods are arranged in the springs (14), the side walls of the connecting frames (15) are fixedly connected with the front side wall and the rear side wall of the screening frame (16) respectively, a material conveying port is arranged on the right side wall of the screening frame (16), an access door is arranged on the front side wall of the screening frame (16), the electromagnets (17) are fixedly mounted on the side wall in the screening frame (16) respectively, the screen (18) is fixedly mounted in the screening frame (16), and the two vibrating motors (19) are fixedly mounted at the bottom ends of the screening frame (16).

4. The wood material hammer mill of claim 1, wherein the dust collection device (5) comprises a dust collection bin (20), a feeding pipe (21) and a fan (22), the dust collection bin (20) is fixedly installed at the top end of the base (1), a chamber is arranged in the dust collection bin (20), a sealing door is arranged on a front side wall of the dust collection bin (20), the feeding pipe (21) is fixedly installed on a left side wall of the dust collection bin (20), an output end of the feeding pipe (21) penetrates through the left side wall of the dust collection bin (20) to enter the chamber of the dust collection bin (20), an input end of the feeding pipe (21) is connected with a discharge port on the hammer mill (2), the fan (22) is fixedly installed on a right side wall of the dust collection bin (20), an air pipe is arranged on the fan (22), an input end of the air pipe penetrates through the right side wall of the dust collection bin (20) to enter the chamber, and the discharge device and the filtering device are installed on the dust collection bin (20).

5. The wood material hammermill of claim 4, wherein the filtering device comprises a first filter screen (23), a second filter screen (24) and a dust receiving drawer (25), wherein the top end and the bottom end of the first filter screen (23) and the second filter screen (24) are fixedly installed at the top end and the bottom end in the chamber of the dust collection chamber (20), the second filter screen (24) is located at the right side of the first filter screen (23), and the dust receiving drawer (25) is slidably installed at the bottom end in the chamber and located at the right side of the first filter screen (23) and the left side of the second filter screen (24).

6. A wood material hammermill according to claim 5, wherein the discharging device comprises a discharging groove (26), a second motor (27) and a helical blade (28), the discharging groove (26) is fixedly installed in the chamber of the dust collection chamber (20) at the bottom end thereof at the left side of the first filter (23), the second motor (27) is fixedly installed on the rear side wall of the dust collection chamber (20), the output end of the second motor (27) penetrates through the rear side wall of the dust collection chamber (20) to enter the chamber and is concentrically connected with one end of the helical blade (28), and the front side wall of the dust collection chamber (20) is provided with a discharging opening.

7. A wood material hammermill according to claim 4 wherein the dust bin (20) is provided with a transparent material window in the front wall thereof.

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