CN113134779A - Harmless treatment device and method for pollution sanding dust of plywood - Google Patents
Harmless treatment device and method for pollution sanding dust of plywood Download PDFInfo
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- CN113134779A CN113134779A CN202110461199.8A CN202110461199A CN113134779A CN 113134779 A CN113134779 A CN 113134779A CN 202110461199 A CN202110461199 A CN 202110461199A CN 113134779 A CN113134779 A CN 113134779A
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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 sanding dust with public hazard of plywood, wherein the device mainly comprises a differential sanding system and a differential recycling system for sanding dust; the differential sanding system mainly comprises an opposite double-sided sander and an offset double-sided sander; the sanding dust distinguishing and recycling system mainly comprises a wood dust collector, a putty dust collector, a grinding machine, a packing machine, a negative pressure fan and a motor; the negative pressure fan is respectively communicated with the wood dust remover and the putty dust remover; the wood dust collector and the putty dust collector are respectively communicated with the offset double-sided sander and the opposite double-sided sander, and the feed opening of the putty dust collector is sequentially communicated with the grinder and the packer. The invention can realize the differential recycling of the sanding dust of the plywood, particularly carries out high-efficiency, high-value and harmless treatment and recycling on the sanding putty dust with public hazard, and has important significance on the emission reduction and efficiency improvement 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 pollution sanding dust of plywood.
Background
In the production process of plywood, in order to improve the product quality of thicker plywood for furniture, the plywood is usually produced by a secondary forming method, namely, a board core is firstly subjected to hot press forming, and then a surface layer is added for secondary hot press forming so as to achieve the thickness required by the product. In order to ensure the quality of secondary forming in production, the surface of the plate core needs to be subjected to putty coating treatment so as to fill the defects of the plate surface such as wormholes, pits, gaps and the like on the surface of the plate core. The prior putty powder scraping method mostly adopts an automatic putty scraping dryer to scrape and dry, and the putty powder scraping method is to scrape the whole surface of the board completely, so that the defect-free place is covered with a layer of putty powder. In order to ensure the bonding quality of the secondary forming laminated plate, redundant putty powder and the protruding wooden part on the surface of the plate core are grinded and removed by a sander. The dust produced by sanding is typically a mixture of putty dust and wood dust. With regard to the treatment of such sanding dust, 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 No. CN202020051045.2 discloses a plywood dust recovery system belongs to recovery system technical field, one side internally mounted in second ventilation opening has the second ventilation filter screen, first fixation nut is installed to the one end in second ventilation opening, the dust absorption pipe is installed to the one end of dust absorption mouth, 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, and according to the change of making of above not enough, install a plurality of dust absorption fans and a plurality of dust absorption mouth and dust absorption pipe in equipment, the speed of dust absorption has been accelerated to equipment, just can inhale away through dust absorption fan and dust absorption mouth when the dust appears, has avoided the appearance of dust not in time to inhale away and has let the staff inhale the internal problem that causes the damage for staff's health.
However, the mixed sanding dust contains more than 15% of putty dust which is non-combustible powder, after the mixed sanding dust enters the hot oil furnace, one part of the putty dust is discharged into the atmosphere through a chimney along with airflow to cause dust pollution to peripheral farmlands, woods and villages, the other part of the putty dust is sintered into blocks at high temperature to be accumulated in a hearth, so that the hearth is blocked and difficult to clean, and one part of the putty dust is sintered and attached 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 shortened, and huge economic loss is finally brought to enterprises, so the plywood sanding dust rich in the putty dust belongs to public hazard dust. However, the related patents and technologies in the prior art do not effectively solve the problem of the harm of the polluted sanding dust to the environment and equipment. How to reasonably, efficiently, high-value and pollution-free process sanding dust rich in putty dust is a technical problem to be solved urgently by current plywood enterprises.
Disclosure of Invention
The invention aims to provide a harmless treatment device and a harmless treatment method for pollution sanding dust of a plywood. The method comprises the steps of performing two times of differential sanding and dust differential recovery on the surface of the plywood core with the putty powder scraped, namely performing fixed-thickness sanding on a putty powder layer on the surface of the plywood firstly, independently recovering and reusing the obtained putty powder (namely, using the putty powder as a putty powder raw material of a dust scraper again), performing accurate sanding on a wooden part of the surface of the plywood secondly, and simultaneously performing independent recovery treatment on the obtained wooden powder (using the wooden powder as a fuel of a heat energy device). The device can realize the differential recycling of the sanding dust of the plywood, particularly carries out high-efficiency, high-value and harmless treatment and recycling on the sanding putty dust with public hazard, and has important significance on the emission reduction and efficiency improvement and environmental protection strategy of plywood enterprises.
In order to achieve the purpose, the invention adopts the following technical scheme:
a harmless treatment device for pollution sanding dust of plywood mainly comprises a differential sanding system and a differential sanding dust recovery system; the differential sanding system mainly comprises an opposite double-sided sander and an offset double-sided sander; a plate inlet table is arranged at the front end of the opposite double-sided sanding machine, a plate outlet table is arranged at the rear end of the offset double-sided sanding machine, and a conveying table is arranged between the opposite double-sided sanding machine and the offset double-sided sanding machine; the sanding dust distinguishing and recycling system mainly comprises a wood dust remover, a putty dust remover, a grinding machine, a packing machine, a negative pressure fan and a motor; an air suction port of the negative pressure fan is respectively communicated with the wood dust remover and the putty dust remover; the dust suction port of the wood dust collector is communicated with the offset double-sided sander through a dust suction pipeline I; the dust suction port of the putty dust collector is communicated with the oppositely-arranged double-sided sander through a dust suction pipeline II, and the feed opening of the putty dust collector is communicated with the grinder; the discharge port of the grinder is communicated with the packer.
The invention is further improved and limited, an air suction inlet of the negative pressure fan is provided with a Y-shaped air suction pipe, one pipe orifice of the Y-shaped air suction pipe is communicated with the wood dust remover, and the other pipe orifice is communicated with the putty dust remover.
The invention further improves and limits the description, the feed opening of the putty dust remover is communicated with the grinding machine through a putty dust spiral conveying pipeline, and a discharge rotary valve II is arranged at the feed opening.
The invention further improves and defines the specification, and the discharge hole of the grinder is communicated with the feed hole of the packer.
According to the invention, the improvement and limitation are further explained, the discharge rotary valve I is arranged at the discharge opening of the wood dust collector, and the wood dust collector 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 a boiler or heat energy equipment such as a hot oil furnace and the like.
The invention further improves and limits the description, the said dust absorption pipeline I mainly is made up of Y-type dust absorption hard tube and dust absorption hose I and dust absorption hose II connected with two pipe orifices of the Y-type dust absorption hard tube separately; the dust collection pipe openings of the dust collection hose I and the dust collection hose II are respectively arranged in two sanding areas of the offset double-sided sanding machine.
The invention further improves and limits the description, the said dust absorption pipeline II is mainly made up of dust absorption hard pipe II and dust absorption hose III communicated; and the dust suction pipe opening of the dust suction hose III is arranged in a sanding area of the opposite double-sided sanding machine.
The invention also provides a harmless treatment method of the pollution sanding dust of the plywood, and the device for harmless treatment of the pollution sanding dust of the plywood comprises the following process steps:
firstly, placing a board core subjected to putty scraping and drying on a board inlet table, sending the board core into an opposed double-sided sander through a driving roller on the board inlet table, performing putty layer thickness-fixed sanding on the upper surface and the lower surface of the board core through an upper sanding roller II and a lower sanding roller II of the opposed double-sided sander, removing redundant putty powder layers, sending putty dust obtained by sanding into a putty dust remover through a dust suction hose III and a dust suction hard pipe II for recycling, sending the putty dust into a grinder for grinding through a discharge rotary valve II at the lower part of the putty dust remover and a putty dust spiral conveying pipeline, improving the uniformity and fineness of putty dust particles, and finally sending the putty dust particles into a packer for packing and warehousing for later use;
secondly, the board core after the putty powder layer is removed through fixed-thickness sanding enters a bias double-sided sander through a conveying table, the lower surface and the upper surface of the board core are precisely sanded through a lower sanding roller I and an upper sanding roller I of the bias double-sided sander in sequence, and then the board core enters the next processing procedure through a board outlet table; the wood dust generated in the process enters the wood dust remover through the dust suction hose I, the dust suction hose II and the Y-shaped dust suction hard pipe, and then is conveyed to a boiler or a hot oil furnace for combustion through the discharge rotary valve I at the lower part of the wood dust remover, the wood dust spiral conveying pipeline and the negative pressure air pipe.
In the invention, the negative pressure airflow in the sanding dust distinguishing and recovering system is provided by the negative pressure fan, the air suction pipe, the air outlet pipe and the motor. The motor drives the negative pressure fan to work.
The invention has the advantages that:
1. in the equipment arrangement, a pair of opposite double-sided sanding machine and an offset double-sided sanding machine are arranged in series, and the total sanding allowance of the board core is sanded distinctively, namely, a putty powder layer and a wood layer are sanded respectively, so that putty dust and wood dust are respectively recovered.
2. The wood dust remover and the putty dust remover are arranged in parallel, and then are connected with a negative pressure fan in series. Not only can realize the distinctive recovery of putty dust and wooden dust, but also can reduce the quantity of fan equipment and reduce area.
3. The invention can realize the recycling of sanding putty dust, not only can reduce the production cost, but also can realize the harmless treatment of the polluted sanding dust, and has important economic significance and environmental protection significance.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Reference numerals: 1-a board inlet table, 2-an opposite double-sided sander, 3-a conveying table, 4-an offset double-sided sander, 5-a board outlet table, 6-a wood dust remover, 7-a putty dust remover, 8-a negative pressure fan, 9-a motor, 10-a grinder, 11-a packer, 12-a Y-shaped air suction pipe, 13-an air outlet pipe, 14-a discharge rotary valve I, 15-a wood dust spiral conveying pipeline, 16-a negative pressure air pipe, 17-a Y-shaped dust suction hard pipe, 18-a dust suction hose I, 19-a dust suction hose II, 20-a discharge rotary valve II, 21-a putty dust spiral conveying pipeline, 22-a dust suction hard pipe II, 23-a dust suction hose III, 24-a lower sand roller I, 25-an upper sand roller I, 26-a lower sand roller II, 27-sanding roller II, 28-plate core.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, a harmless treatment device for sanding dust of plywood is mainly composed of a differential sanding system and a differential recycling system for sanding dust; the differential sanding system mainly comprises an opposite double-sided sander 2 and an offset double-sided sander 4; a plate inlet table 1 is arranged at the front end of the opposite double-sided sanding machine 2, a plate outlet table 5 is arranged at the rear end of the offset double-sided sanding machine 4, and a conveying table 3 is arranged between the opposite double-sided sanding machine 2 and the offset double-sided sanding machine 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; an air suction port of the negative pressure fan 8 is respectively communicated with the wood dust remover 6 and the putty dust remover 7; the dust suction port of the wood dust collector 6 is communicated with the offset double-sided sander 4 through a dust suction pipeline I; the dust suction port of the putty dust collector 7 is communicated with the oppositely-arranged double-sided sander 2 through a dust suction pipeline II, and the feed port of the putty dust collector 7 is communicated with the grinder 10; the discharge opening of the grinder 10 communicates with a baler 11.
An air suction opening of the negative pressure fan 8 is provided with a Y-shaped air suction pipe 12, one pipe orifice of the Y-shaped air suction pipe 12 is communicated with the wood dust remover 6, and the other pipe orifice is communicated with the putty dust remover 7.
The feed opening of the putty dust remover 7 is communicated with the grinding machine 10 through a putty dust spiral conveying pipeline 21, and a discharge rotary valve II 20 is arranged at the feed opening.
The discharge port of the wood dust remover 6 is provided with a discharge rotary valve I14, and 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 dust collection pipeline I mainly comprises a Y-shaped dust collection hard pipe 17, 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 collection pipe openings of the dust collection hose I18 and the dust collection hose II 19 are respectively arranged in two sanding 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; the dust collection hose III 23 is arranged in the sanding area of the opposite double-sided sander 2.
The treatment method of the harmless treatment device for the polluted sanding dust of the plywood comprises the following process steps:
firstly, placing a board core 28 subjected to putty scraping and drying on a board inlet table 1, sending the board core 28 into an opposed double-sided sander 2 through a driving roller on the board inlet table 1, performing putty layer thickness-fixed sanding on the upper and lower surfaces of the board core 28 through an upper sanding roller II 27 and a lower sanding roller II 26 of the opposed double-sided sander 2, removing redundant putty powder layers, enabling putty dust obtained by sanding to enter a putty dust remover 7 through a dust suction hose III 23 and a dust suction hard pipe II 22 for recycling, sending the putty dust into a grinder 10 for grinding through a discharge rotary valve II 20 at the lower part of the putty dust remover 7 and a putty dust spiral conveying pipeline 21, and finally entering a packer 11 for packing and warehousing as a putty powder raw material for later use;
secondly, the board core 28 after the putty powder layer is removed through the fixed-thickness sanding enters the offset double-sided sander 4 through the conveying table 3, the lower surface and the upper surface of the board core 28 are precisely sanded through a lower sanding roller I24 and an upper sanding roller I25 of the offset double-sided sander 4 in sequence, and then the board core enters the next processing procedure through the board outlet table 5; the wood dust generated in the process enters the wood dust collector 6 through the dust collection hose I18, the dust collection hose II 19 and the Y-shaped dust collection hard pipe 17, and then is sent to a boiler for combustion through the discharge rotary valve I14 at the lower part of the wood dust collector 6, the wood dust spiral conveying pipeline 15 and the negative pressure air pipe 16.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the practice of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description; this is not necessary, nor exhaustive, of all embodiments; and obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (7)
1. A harmless treatment device for pollution sanding dust of plywood mainly comprises a differential sanding system and a differential sanding dust recovery system; the method is characterized in that:
the differential sanding system mainly comprises an opposite double-sided sander (2) and an offset double-sided sander (4); a plate inlet table (1) is arranged at the front end of the opposite double-sided sanding machine (2), a plate outlet table (5) is arranged at the rear end of the offset double-sided sanding machine (4), and a conveying table (3) is arranged between the opposite double-sided sanding machine (2) and the offset double-sided sanding machine (4);
the sanding dust distinguishing and recycling system mainly comprises a wood dust collector (6), a putty dust collector (7), a grinding machine (10), a packing machine (11), a negative pressure fan (8) and a motor (9);
an air suction port of the negative pressure fan (8) is respectively communicated with the wood dust remover (6) and the putty dust remover (7);
the dust suction port of the wood dust collector (6) is communicated with the offset double-sided sander (4) through a dust suction pipeline I;
the dust suction port of the putty dust collector (7) is communicated with the opposite type double-sided sander (2) through a dust suction pipeline II, and the feed opening of the putty dust collector (7) is communicated with the grinder (10);
the discharge hole of the grinder (10) is communicated with the feed inlet of the packer (11).
2. The plywood harmless sanding dust innocent treatment device according to claim 1, characterized in that: an air suction opening of the negative pressure fan (8) is provided with a Y-shaped air suction pipe (12), one pipe orifice of the Y-shaped air suction pipe (12) is communicated with the wood dust remover (6), and the other pipe orifice is communicated with the putty dust remover (7).
3. The plywood harmless sanding dust innocent treatment device according to claim 1, characterized in that: the feed opening of the putty dust remover (7) is communicated with the grinding machine (10) through a putty dust spiral conveying pipeline (21), and a discharge rotary valve II (20) is arranged at the feed opening.
4. The plywood harmless sanding dust innocent treatment device according to claim 1, characterized in that: the discharging opening of the wood dust remover (6) is provided with a discharging rotary valve I (14) and 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.
5. The plywood harmless sanding dust innocent treatment device according to claim 1, characterized in that: the dust collection pipeline I mainly comprises a Y-shaped dust collection hard pipe (17), 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 collection pipe openings of the dust collection hose I (18) and the dust collection hose II (19) are respectively arranged in two sanding areas of the offset double-sided sander (4).
6. The plywood harmless sanding dust innocent treatment device according to claim 1, characterized in that: 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 pipe opening of the dust collection hose III (23) is arranged in a sanding area of the opposite double-sided sanding machine (2).
7. A harmless treatment method for pollution sanding dust of plywood is characterized in that the harmless treatment device for pollution sanding dust of the plywood as claimed in any one of claims 1 to 6 is adopted, and comprises the following process steps:
firstly, placing a board core (28) subjected to putty scraping and drying on a board inlet table (1), sending the board core (28) into an opposite double-sided sander (2) through a driving roller on the board inlet table (1), sanding and grinding the upper surface and the lower surface of the board core (28) in a putty layer thickness-fixed mode through an upper sanding roller II (27) and a lower sanding roller II (26) of the opposite double-sided sander (2), removing a surplus putty powder layer, sending putty powder obtained by sanding into a putty powder dust remover (7) through a dust suction hose III (23) and a dust suction hard pipe II (22) for recovery, sending the putty powder into a grinder (10) through a discharge rotary valve II (20) and a putty powder spiral conveying pipeline (21) at the lower part of the putty powder dust remover (7) for grinding, and finally entering a packer (11) for packing and warehousing as a putty powder raw material;
secondly, the board core (28) which is sanded to a fixed thickness and has the putty powder layer removed enters a bias double-sided sander (4) through a conveying table (3), the lower surface and the upper surface of the board core (28) are precisely sanded through a lower sanding roller I (24) and an upper sanding roller I (25) of the bias double-sided sander (4) in sequence, and then the board core enters the next processing procedure through a board outlet table (5); the wood dust generated in the process enters the wood dust collector (6) through the dust collection hose I (18), the dust collection hose II (19) and the Y-shaped dust collection hard pipe (17), and then is sent to an external wood dust recycling device through the unloading rotary valve I (14) at the lower part of the wood dust collector (6), the wood dust spiral conveying pipeline (15) and the negative pressure air pipe (16).
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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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