CN113134779B - Harmless treatment device and treatment method for polluted sanding dust of plywood - Google Patents
Harmless treatment device and treatment method for polluted sanding dust of plywood Download PDFInfo
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- CN113134779B CN113134779B CN202110461199.8A CN202110461199A CN113134779B CN 113134779 B CN113134779 B CN 113134779B CN 202110461199 A CN202110461199 A CN 202110461199A CN 113134779 B CN113134779 B CN 113134779B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Prevention Of Fouling (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a harmless treatment device and a treatment method for polluted sanding dust of a plywood, wherein the device mainly comprises a distinguishing sanding system and a distinguishing sanding dust recycling system; the distinguishing sanding system mainly comprises an opposite type double-sided sander and an offset type double-sided sander; the sanding dust distinguishing and recycling system mainly comprises a wood powder dust remover, a putty dust remover, a grinder, a packer, a negative pressure fan and a motor; the negative pressure fan is respectively communicated with the wood powder dust remover and the putty dust remover; the wood dust remover and the putty dust remover are respectively communicated with the offset double-sided sander and the opposite double-sided sander, and the feed opening of the putty dust remover is sequentially communicated with the grinder and the packer. The invention can realize the differential recycling of the sanding dust of the plywood, and particularly carries out high-efficiency, high-value and harmless treatment and recycling on the polluted sanding putty dust, thereby having important significance for the emission reduction and synergy and environmental protection strategy of plywood enterprises.
Description
Technical Field
The invention belongs to the technical field of dust treatment in plywood production, and particularly relates to a harmless treatment device and a harmless treatment method for polluted sanding dust of plywood.
Background
In the production process of plywood, in order to improve the product quality of thicker plywood for furniture, a secondary molding method is generally adopted to produce the plywood, namely, firstly, a board core is subjected to hot press molding, and then, a surface layer is added to carry out secondary hot press molding so as to achieve the thickness required by the product. In order to ensure the quality of secondary molding in production, putty scraping treatment is required to be carried out on the surface of the plate core so as to fill plate surface defects such as wormholes, pits, gaps and the like on the surface of the plate core. The current method for applying putty powder mostly adopts an automatic putty-applying dryer to carry out putty-applying and drying, and the method for applying putty powder is to apply the putty powder to the whole surface of the plate, so that a layer of putty powder is covered on the place without defects. In order to ensure the bonding quality of the secondary molding laminated plate, the superfluous putty powder and the protruding xylem on the surface of the plate core are required to be removed by sanding through a sander. The dust produced by sanding is typically a mixture of putty dust and wood dust. Regarding such sanding dust treatment, at present, enterprises generally adopt a method of recovering the sanding dust through a dust collection system and then transferring the sanding dust as fuel to a hot oil furnace for incineration. For example, patent application number CN202020051045.2 discloses a plywood dust recovery system, belongs to recovery system technical field, one side internally mounted of second ventilation opening has the second filter screen that ventilates, first fixation nut is installed to the one end of second ventilation opening, the dust absorption pipe is installed to the one end of dust absorption opening, first dust absorption fan is installed to the one end of dust absorption pipe, the dust absorption hose is installed to the one end of first dust absorption fan, the second ventilation pipe is installed to the outside top of box, changes according to the not enough changes of making above, installs a plurality of dust absorption fans and a plurality of dust absorption openings and dust absorption pipe in equipment, and the speed of dust absorption has been accelerated to the equipment, just can inhale away through dust absorption fan and dust absorption opening when the dust appears, has avoided the untimely suction away of appearance of dust to let the staff inhale the problem that causes the damage for staff's health in vivo.
However, the mixed sanding dust contains more than 15% of putty dust, the putty dust is nonflammable powder, after entering a hot oil furnace, one part of the putty dust is discharged into the atmosphere along with air flow through a chimney, dust pollution is caused to surrounding farmlands, forests and villages, the other part of the putty dust is sintered at high temperature to form a block and accumulated in a hearth, the hearth is blocked and is difficult to clean, and the other part of the putty dust is sintered and adhered to a hot oil pipe, so that the thermal efficiency is reduced, the hot oil pipe is corroded, the service life of the hot oil furnace is reduced, and finally, huge economic loss is brought to enterprises, so that the sanding dust of the plywood rich in the putty dust belongs to polluted dust. However, none of the related patents and techniques currently available effectively address the problem of damaging nuisance sanding dust to the environment and equipment. How to reasonably, efficiently and highly-efficiently treat sanding dust rich in putty dust in a pollution-free way is a technical problem which needs to be solved by the prior plywood enterprises.
Disclosure of Invention
The invention aims to provide a harmless treatment device and a harmless treatment method for polluted sanding dust of plywood. According to the invention, two different sanding and dust distinguishing recovery are respectively carried out on the surface of the plywood core scraped with putty powder, namely, firstly, the plate surface putty powder layer is firstly subjected to fixed thickness sanding removal, the obtained putty powder is independently recovered and reused (namely, the putty powder is used as a putty powder raw material of a ash scraper again), then, the plate surface xylem is precisely sanded in a second way, and meanwhile, the obtained wood powder is independently recovered (used as fuel of heat energy equipment). The device can realize the differential recycling of the sanding dust of the plywood, and particularly, the device can carry out high-efficiency, high-value and harmless treatment and recycling on the polluted sanding putty dust, thereby having important significance for the emission reduction and synergy and environmental protection strategy of plywood enterprises.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the harmless treatment device for the polluted sanding dust of the plywood mainly comprises a distinguishing sanding system and a sanding dust distinguishing and recycling system; the differential sanding system mainly comprises a counter-type double-sided sander and an offset double-sided sander; a plate feeding table is arranged at the front end of the opposite type double-sided sander, a plate discharging table is arranged at the rear end of the offset type double-sided sander, and a conveying table is arranged between the opposite type double-sided sander and the offset type double-sided sander; the sanding dust distinguishing and recycling system mainly comprises a wood dust remover, a putty dust remover, a grinder, a packer, a negative pressure fan and a motor; the suction inlet of the negative pressure fan is respectively communicated with the wood powder dust remover and the putty dust remover; the dust collection port of the wood powder dust remover is communicated with the offset double-sided sander through a dust collection pipeline I; the dust collection port of the putty dust remover is communicated with the opposite double-sided sander through a dust collection pipeline II, and the discharge port of the putty dust remover is communicated with the grinder; and a discharge hole of the grinder is communicated with the packer.
The invention further improves and limits the explanation, the suction inlet of the negative pressure fan is provided with a Y-shaped suction pipe, one pipe orifice of the Y-shaped suction pipe is communicated with the wood dust remover, and the other pipe orifice is communicated with the putty dust remover.
According to the invention, a further improvement and limitation state is that a feed opening of the putty dust remover is communicated with a grinder through a putty dust spiral conveying pipeline, and a discharge rotary valve II is arranged at the feed opening.
The invention further improves and limits the description, the discharge port of the grinder is communicated with the feed port of the packer.
According to the invention, a further improvement and limitation instruction is provided, a discharging rotary valve I is arranged at the discharging opening of the wood dust remover, and the discharging rotary valve I is connected with an external wood dust recycling device through a wood dust spiral conveying pipeline and a negative pressure air pipe in sequence. The wood dust recycling device is external equipment, and can be heat energy equipment such as a boiler, a hot oil furnace and the like.
The invention further improves and limits the explanation, the said dust collection pipeline I is mainly made up of Y-type dust collection hard tube and dust collection hose I and dust collection hose II that connect with two pipe orifices of Y-type dust collection hard tube separately; the dust absorption pipe orifices of the dust absorption hose I and the dust absorption hose II are respectively arranged in two sand cutting areas of the offset double-sided sander.
The invention further improves and limits the description, the dust collection pipeline II mainly comprises a dust collection hard pipe II and a dust collection hose III which are communicated with each other; the dust collection hose III is arranged in the sand cutting area of the opposite double-sided sander.
The invention also provides a harmless treatment method for the polluted sanding dust of the plywood, which adopts the harmless treatment device for the polluted sanding dust of the plywood and comprises the following process steps:
firstly, placing a plate core after puttying and drying on a plate feeding table, feeding the plate core into a contraposition double-sided sander through a driving roller on the plate feeding table, carrying out putty layer thickness fixing and sanding on the upper surface and the lower surface of the plate core through an upper sand roller II and a lower sand roller II of the contraposition double-sided sander, removing redundant putty powder layers, feeding the sanded putty powder into a putty dust remover through a dust collection hose III and a dust collection hard pipe II for recycling, feeding the putty powder into a grinder for grinding through a discharge rotary valve II and a putty dust spiral conveying pipeline at the lower part of the putty dust remover, improving the uniformity and the fineness of putty particles, and finally feeding the putty powder into a packer for packing and warehousing for standby;
secondly, the plate core after the putty powder layer is removed by fixed thickness sanding enters an offset double-sided sander through a conveying table, the lower surface and the upper surface of the plate core are precisely sanded through a lower sand roller I and an upper sand roller I of the offset double-sided sander respectively, and then the plate core enters the next processing procedure through a plate outlet table; wooden dust generated in the process enters the wood dust remover through a dust collection hose I, a dust collection hose II and a Y-shaped dust collection hard pipe, and then is sent to a boiler or a hot oil furnace for combustion through a discharge rotary valve I, a wood dust spiral conveying pipeline and a negative pressure air pipe at the lower part of the wood dust remover.
In the invention, negative pressure air flow in the sanding dust distinguishing and recycling system is provided by a negative pressure fan, an air suction pipe, an air outlet pipe and a motor. The motor drives the negative pressure fan to work.
The invention has the advantages that:
1. according to the invention, in equipment arrangement, an opposite double-sided sander and an offset double-sided sander are arranged in series, and the total sanding allowance of the board core is differentially sanded, namely, the putty powder layer and the xylem layer are respectively sanded, so that the separate recovery of putty dust and wood dust is realized.
2. According to the invention, a wood powder dust remover and a putty dust remover are arranged in parallel and then connected in series with a negative pressure fan. Not only can realize the distinguishing recovery of putty dust and wood dust, but also can reduce the quantity of fan equipment and the occupied area.
3. The invention can realize recycling of sanding putty dust, not only can reduce production cost, but also can realize harmless treatment of polluted sanding dust, and has important economic significance and environmental protection significance.
Drawings
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention.
Reference numerals: 1-board feeding table, 2-opposite type double-sided sander, 3-conveying table, 4-offset type double-sided sander, 5-board discharging table, 6-wood dust remover, 7-putty dust remover, 8-negative pressure fan, 9-motor, 10-grinder, 11-packer, 12-Y-type air suction pipe, 13-air outlet pipe, 14-discharging rotary valve I, 15-wood dust spiral conveying pipeline, 16-negative pressure air pipe, 17-Y-type dust suction hard pipe, 18-dust suction hose I, 19-dust suction hose II, 20-discharging rotary valve II, 21-putty dust spiral conveying pipeline, 22-dust suction hard pipe II, 23-dust suction hose III, 24-lower sand roller I, 25-upper sand roller I, 26-lower sand roller II, 27-upper sand roller II and 28-board core.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Examples:
as shown in fig. 1, the harmless treatment device for the polluted sanding dust of the plywood mainly comprises a differential sanding system and a differential sanding dust recycling system; the differential sanding system mainly comprises a counter-type double-sided sander 2 and an offset double-sided sander 4; a board feeding table 1 is arranged at the front end of the opposite type double-sided sander 2, a board discharging table 5 is arranged at the rear end of the offset type double-sided sander 4, and a conveying table 3 is arranged between the opposite type double-sided sander 2 and the offset type double-sided sander 4; the sanding dust distinguishing and recycling system mainly comprises a wood powder dust remover 6, a putty dust remover 7, a grinding machine 10, a packing machine 11, a negative pressure fan 8 and a motor 9; the air suction inlet of the negative pressure fan 8 is respectively communicated with the wood powder dust remover 6 and the putty dust remover 7; the dust collection port of the wood powder dust remover 6 is communicated with the offset double-sided sander 4 through a dust collection pipeline I; the dust collection port of the putty dust remover 7 is communicated with the opposite double-sided sander 2 through a dust collection pipeline II, and the discharge port of the putty dust remover 7 is communicated with the grinder 10; the discharge port of the grinder 10 is in communication with a baler 11.
The suction inlet of the negative pressure fan 8 is provided with a Y-shaped suction pipe 12, one pipe orifice of the Y-shaped suction pipe 12 is communicated with the wood powder dust remover 6, and the other pipe orifice is communicated with the putty dust remover 7.
The blanking mouth of putty dust remover 7 be linked together with grinding machine 10 through putty dust screw conveying pipeline 21 to be equipped with discharge rotary valve II 20 in the blanking mouth department.
The discharging rotary valve I14 is arranged at the discharging opening of the wood powder dust remover 6, and the discharging rotary valve I is connected with an external wood powder dust recycling device through the wood powder spiral conveying pipeline 15 and the negative pressure air pipe 16 in sequence.
The dust collection pipeline I mainly comprises a Y-shaped dust collection hard pipe 17, and a dust collection hose I18 and a dust collection hose II 19 which are respectively connected with two pipe orifices of the Y-shaped dust collection hard pipe 17; the dust suction nozzles of the dust suction hose I18 and the dust suction hose II 19 are respectively arranged in two sand cutting areas of the offset double-sided sander 4.
The dust collection pipeline II mainly comprises a dust collection hard pipe II 22 and a dust collection hose III 23 which are communicated with each other; the dust collection hose III 23 is arranged in the sand cutting area of the opposite double-sided sander 2.
The treatment method of the pollution-free sanding dust harmless treatment device for the plywood comprises the following process steps:
firstly, placing a plate core 28 after puttying and drying on a plate feeding table 1, feeding the plate core 28 into a contraposition double-sided sanding machine 2 through a driving roller on the plate feeding table 1, carrying out putty layer thickness setting sanding on the upper surface and the lower surface of the plate core 28 through an upper sand roller II 27 and a lower sand roller II 26 of the contraposition double-sided sanding machine 2, removing redundant putty powder layers, feeding the sanded putty powder into a putty dust remover 7 for recycling through a dust collection hose III 23 and a dust collection hard tube II 22, feeding the putty powder into a grinding machine 10 for grinding through a discharge rotary valve II 20 and a dust spiral conveying pipeline 21 at the lower part of the putty dust remover 7, and finally feeding the putty powder into a packer 11 for packing and warehousing as putty powder raw materials for standby;
secondly, the plate core 28 after the putty powder layer is removed by fixed thickness sanding enters the offset double-sided sander 4 through the conveying table 3, the lower surface and the upper surface of the plate core 28 are precisely sanded through a lower sand roller I24 and an upper sand roller I25 of the offset double-sided sander 4 respectively, and then the plate core enters the next processing procedure through the plate outlet table 5; the wooden dust generated in the process enters the wood dust remover 6 through a dust collection hose I18, a dust collection hose II 19 and a Y-shaped dust collection hard pipe 17, and is sent to a boiler for combustion through a discharge rotary valve I14, a wood dust spiral conveying pipeline 15 and a negative pressure air pipe 16 at the lower part of the wood dust remover 6.
It is to be understood that the above-described embodiments are merely illustrative of the invention and are not intended to limit the practice of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (1)
1. The harmless treatment device for the polluted sanding dust of the plywood mainly comprises a distinguishing sanding system and a sanding dust distinguishing and recycling system; the method is characterized in that:
the differential sanding system mainly comprises a counter-type double-sided sander (2) and an offset double-sided sander (4); a board feeding table (1) is arranged at the front end of the opposite type double-sided sander (2), a board discharging table (5) is arranged at the rear end of the offset type double-sided sander (4), and a conveying table (3) is arranged between the opposite type double-sided sander (2) and the offset type double-sided sander (4);
the sanding dust distinguishing and recycling system mainly comprises a wood dust remover (6), a putty dust remover (7), a grinding machine (10), a packing machine (11), a negative pressure fan (8) and a motor (9);
the air suction inlet of the negative pressure fan (8) is respectively communicated with the wood powder dust remover (6) and the putty dust remover (7);
the dust collection opening of the wood powder dust remover (6) is communicated with the offset double-sided sander (4) through a dust collection pipeline I;
the dust collection port of the putty dust remover (7) is communicated with the opposite double-sided sander (2) through a dust collection pipeline II, and the blanking port of the putty dust remover (7) is communicated with the grinder (10);
the discharge port of the grinder (10) is communicated with the feed port of the packer (11);
the suction inlet of the negative pressure fan (8) is provided with a Y-shaped suction pipe (12), one pipe orifice of the Y-shaped suction pipe (12) is communicated with the wood powder dust remover (6), and the other pipe orifice is communicated with the putty dust remover (7);
the dust collection pipeline I mainly comprises a Y-shaped dust collection hard pipe (17), and a dust collection hose I (18) and a dust collection hose II (19) which are respectively connected with two pipe orifices of the Y-shaped dust collection hard pipe (17); the dust suction nozzles of the dust suction hose I (18) and the dust suction hose II (19) are respectively arranged in two sand cutting areas of the offset double-sided sander (4);
the dust collection pipeline II mainly comprises a dust collection hard pipe II (22) and a dust collection hose III (23) which are communicated with each other; the dust suction pipe orifice of the dust suction hose III (23) is arranged in the sand cutting area of the opposite double-sided sander (2);
the discharging opening of the putty dust remover (7) is communicated with the grinding machine (10) through a putty dust spiral conveying pipeline (21), and a discharging rotary valve II (20) is arranged at the discharging opening;
a discharging rotary valve I (14) is arranged at the discharging opening of the wood dust remover (6), and the discharging rotary valve I is connected with an external wood dust recycling device through a wood dust spiral conveying pipeline (15) and a negative pressure air pipe (16) in sequence;
the harmless treatment method for the nuisance sanding dust of the plywood by the nuisance sanding dust harmless treatment device comprises the following process steps:
firstly, placing a plate core (28) after puttying and drying on a plate feeding table (1), feeding the plate core (28) into a counter-type double-sided sanding machine (2) through a driving roller on the plate feeding table (1), carrying out putty layer thickness fixing sanding on the upper and lower surfaces of the plate core (28) through an upper sand roller II (27) and a lower sand roller II (26) of the counter-type double-sided sanding machine (2), removing redundant putty powder layers, feeding the sanded putty powder into a putty dust remover (7) for recycling through a dust collection hose III (23) and a dust collection hard tube II (22), feeding the putty dust into a grinding machine (10) through a discharge rotary valve II (20) and a putty dust spiral conveying pipeline (21) at the lower part of the putty dust remover (7), and finally feeding the putty powder into a packing machine (11) for packing and warehousing as a powder raw material for standby;
secondly, a plate core (28) after the putty powder layer is removed by fixed-thickness sanding enters a bias type double-sided sander (4) through a conveying table (3), the lower surface and the upper surface of the plate core (28) are precisely sanded through a lower sand roller I (24) and an upper sand roller I (25) of the bias type double-sided sander (4) respectively, and then the plate core enters the next processing procedure through a plate outlet table (5); wooden dust generated in the process enters the wood dust remover (6) through a dust collection hose I (18), a dust collection hose II (19) and a Y-shaped dust collection hard pipe (17), and then is sent to an external wood dust recycling device through a discharging rotary valve I (14), a wood dust spiral conveying pipeline (15) and a negative pressure air pipe (16) at the lower part of the wood dust remover (6).
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| CN202110461199.8A CN113134779B (en) | 2021-04-27 | 2021-04-27 | Harmless treatment device and treatment method for polluted sanding dust of plywood |
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| CN202110461199.8A CN113134779B (en) | 2021-04-27 | 2021-04-27 | Harmless treatment device and treatment method for polluted sanding dust of plywood |
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| CN113134779B true CN113134779B (en) | 2023-05-12 |
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| CN107214093A (en) * | 2017-06-23 | 2017-09-29 | 邵阳天元木业有限公司 | The bamboo powder separator and its method of bamboo product waste material |
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| US6434784B1 (en) * | 2000-12-19 | 2002-08-20 | David A. Wisser | Portable dust collection system for collection of wood floor sanding dust |
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| CN104924184B (en) * | 2015-04-29 | 2019-01-15 | 广西大学 | A kind of the fibre dust conveyer and desanding method of automatic sand removal |
| CN204672086U (en) * | 2015-05-27 | 2015-09-30 | 云南司珈尔木业股份有限公司 | A kind of density board processing factory dust pelletizing system |
| CN206106029U (en) * | 2016-08-31 | 2017-04-19 | 上海志兴实业有限公司 | Dust collecting equipment on timber stripping and slicing, machine of polishing |
| CN108994700A (en) * | 2017-06-07 | 2018-12-14 | 湖北长丹红木业有限公司 | Ecological board sanding device |
| CN108994985A (en) * | 2017-06-07 | 2018-12-14 | 湖北长丹红木业有限公司 | Timber processes dust pelletizing system |
| CN110303410A (en) * | 2018-03-20 | 2019-10-08 | 湖北乾奥建设工程有限公司 | A kind of building template top and bottom sanding system |
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| CN209275433U (en) * | 2019-01-04 | 2019-08-20 | 漳州市庆瑞工贸有限公司 | Conveying device is used in a kind of processing of Plywood for concrete form |
| CN209501223U (en) * | 2019-01-18 | 2019-10-18 | 三门峡职业技术学院 | Dust-extraction unit is used in a kind of production of fire preventing and heat insulating building material |
| CN212262628U (en) * | 2020-09-21 | 2021-01-01 | 开平市甘力木业有限公司 | Plywood dust recovery system |
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2021
- 2021-04-27 CN CN202110461199.8A patent/CN113134779B/en active Active
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|---|---|---|---|---|
| JPH0526256U (en) * | 1991-09-21 | 1993-04-06 | アミテツク株式会社 | Dust collector for sanding machines |
| CN104552004A (en) * | 2014-12-19 | 2015-04-29 | 广西大学 | Fiberboard sanding dust recycling machine capable of automatically separating sand grains and recycling method |
| CN107214093A (en) * | 2017-06-23 | 2017-09-29 | 邵阳天元木业有限公司 | The bamboo powder separator and its method of bamboo product waste material |
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| CN113134779A (en) | 2021-07-20 |
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