CN113119265A - Method for preparing high-efficiency energy-saving shaving board by rapid preheating and shaving board - Google Patents
Method for preparing high-efficiency energy-saving shaving board by rapid preheating and shaving board Download PDFInfo
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- CN113119265A CN113119265A CN201911406820.XA CN201911406820A CN113119265A CN 113119265 A CN113119265 A CN 113119265A CN 201911406820 A CN201911406820 A CN 201911406820A CN 113119265 A CN113119265 A CN 113119265A
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- shaving board
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- wood shavings
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000012792 core layer Substances 0.000 claims abstract description 29
- 239000002344 surface layer Substances 0.000 claims abstract description 22
- 238000007731 hot pressing Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 239000002023 wood Substances 0.000 claims description 58
- 239000000463 material Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 230000007480 spreading Effects 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- 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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a method for preparing a quickly preheated high-efficiency energy-saving shaving board and the shaving board. The shaving board microwave preheating process is additionally arranged between the paving process and the pre-pressing process, the shaving board is quickly preheated, the surface and core layers of the board blank are simultaneously heated and heated, the initial temperature of the paved shaving board blank during pre-pressing and hot-pressing is improved, the air in the pre-pressed shaving board blank is reduced, the heat transfer efficiency during hot-pressing is improved, the heating and heating time of the shaving board blank in a hot press is reduced, the curing speed of an adhesive is improved, the whole production and preparation time of the shaving board is shortened, the production efficiency is improved, and raw materials and energy loss are saved.
Description
Technical Field
The invention relates to the technical field of artificial board manufacturing, in particular to a method for preparing a rapidly preheated high-efficiency energy-saving shaving board and the shaving board.
Background
The particle board is an artificial board prepared by taking wood or other wood fibers as raw materials and performing raw material preparation, drying and sorting, urea resin or other adhesives application, paving, prepressing and hot press molding. With the development of economy and the improvement of the living standard of people, the domestic customized furniture industry is rapidly developed, and the demand of the shaving board as the main base material of the customized furniture is increasing day by day.
At present, the particle board preparation method in the prior art generally comprises the procedures of raw material preparation, drying and screening, sizing, forming, prepressing and hot pressing. The purpose of forming is to ensure that the density of the shaving board is uniform, the specifications of the shavings of the thickness symmetrical layers are consistent, and the weight of the paving plate blank meets the density requirement of the shaving board; the purpose of pre-pressing is to exhaust air in the plate blank, increase the heat transfer efficiency during hot pressing, prevent a large amount of air from escaping to break through the plate blank during hot pressing, and enable the plate blank to have certain compactness; the hot pressing aims at compacting the pre-pressed board blank under the combined action of heat and pressure, gasifying and evaporating the moisture of the wood shaving board blank, increasing the density and solidifying an adhesive. Because the temperature of the laid shaving board blank is low, when the laid board blank enters a cold press for prepressing, the plasticity of wood is poor, and the board blank is easy to rebound after prepressing. The above problem causes a large amount of air remaining in the slab, and affects the heat transfer rate during hot pressing. Meanwhile, the prior art also has the problem that a temperature rise process is needed when the pre-pressed wood shaving board blank is subjected to hot pressing, and the length of the process directly influences the production efficiency of the shaving board.
The existing patent technology shows that the moisture content of the surface layer of the plate blank is improved by constructing a moisture content gradient, so that the moisture content of the surface layer of the plate blank generates a steam impact effect, the transmission speed of the temperature from the surface layer of the plate blank to a core layer is increased, the heating rate of the core layer of the plate blank is increased, the hot pressing time is finally shortened, and the production efficiency is improved. Secondly, through a steam injection method, wet and hot steam penetrates through the whole plate blank from top to bottom at a constant speed, the surface and the core layer of the plate blank are effectively treated, and the temperature of the surface and the core layer of the plate blank is remarkably increased, so that the resin curing is accelerated, and the rapid production of the shaving board is realized. In addition, the core layer wood shavings are subjected to heat treatment through a hot air heating technology, the temperature of the core layer wood shavings is improved, the temperature difference between the surface of the plate blank and the core layer wood shavings is reduced, the temperature is quickly transmitted inside the plate blank, the adhesive is quickly cured, and the hot pressing speed of the shaving board is improved. However, no matter the gradient construction technology of the moisture content of the plate blank, the steam spraying and steaming technology or the hot air heating technology, the purpose is to reduce the temperature difference between the wood shavings of the surface core layer, and the shaving board is paved by three layers, so that the wood shavings of the surface layer are thinner, the glue application amount is large, the air permeability is poor, and the heat transfer rate of the steam spraying and steaming technology and the air heating technology is hindered. It is more significant if the surface core layer of the plate blank can be heated by rapid temperature rise at the same time.
Therefore, a method for preparing a high-efficiency and energy-saving shaving board by rapid preheating and a shaving board are desired to solve the problems in the prior art.
Disclosure of Invention
The invention aims to solve the problems of surface core layer temperature difference, low heat conduction efficiency, long production time and the like existing in the processing process of the shaving board in the prior art.
The invention provides a method for preparing a high-efficiency energy-saving quickly-preheated shaving board and the shaving board, wherein a shaving board microwave preheating process is additionally arranged between a paving process and a prepressing process, the shaving board is quickly preheated by using the method, so that the surface and core layers of a board blank are simultaneously heated and heated, the initial temperature of the paved shaving board blank during prepressing and hot pressing is improved, the air in the prepressed shaving board blank is reduced, the heat transfer efficiency during hot pressing is improved, the heating and heating time of the shaving board blank in a hot press is reduced, the curing speed of an adhesive is improved, the whole production and preparation time of the shaving board is shortened, and the production efficiency is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shaving board preparation method capable of quickly preheating, efficiently and energy-saving and a shaving board are disclosed, wherein the shaving board preparation method comprises the following steps:
(1) preparing raw materials: selecting wood processing residues as raw materials, and planing by using a flaker to obtain flaky wood shavings;
(2) drying and screening: feeding the flake wood shavings into a dryer for drying, wherein the moisture content of the dried flake wood shavings is 1.8-3.3%; screening and dividing the dried flaky wood shavings into surface layer fine wood shavings and core layer coarse wood shavings;
(3) sizing: the surface layer fine wood shavings and the core layer coarse wood shavings are respectively glued by urea-formaldehyde resin glue, the surface layer fine glue application amount is 8-14%, and the water content of the glued surface layer fine wood shavings is controlled to be 8-15%; the coarse gluing amount of the core layer is 5-8%, and the water content of the glued coarse core layer wood shavings is controlled to be 5-8%;
(4) molding: uniformly spreading the glued surface layer fine wood shavings and the core layer coarse wood shavings into wood shavings plate blanks with a three-layer structure according to the specified weight by using a spreading machine respectively;
(5) microwave preheating of the shaving board blank: conveying the paved wood shaving board blank into a microwave heating device through a conveying device, and performing microwave preheating on the paved wood shaving board blank through a microwave transmitting mechanism arranged in the microwave heating device;
(6) pre-pressing: conveying the shaving board blank preheated by the microwaves into a prepressing machine through a conveying device for prepressing;
(7) hot pressing: conveying the pre-pressed shaving board blank into a hot press through a conveying device for hot press molding to obtain a shaving board blank;
(8) and (3) post-processing: cooling the shaving board rough board, trimming, sanding two sides of the rough board by a sander, sawing into small boards, packaging and storing to obtain the finished shaving board.
Preferably, the microwave heating device in the step (5) is a continuous tunnel type water-cooled microwave heating device.
Preferably, in the step (5), the laid wood shaving board blank is subjected to microwave preheating by a magnetron in the microwave emitting mechanism.
Preferably, the temperature of the shaving board blank preheated by the continuous tunnel type water-cooling microwave heating device in the step (5) is controlled to be 40-80 ℃.
Preferably, the continuous tunnel type water-cooled microwave heating device in the step (5) reduces microwave radiation leakage by arranging a feed/discharge port microwave suppressor and a microwave leakage prevention housing.
Preferably, the inlet and outlet microwave suppressors absorb leaked microwaves by using graphite powder covered on the inner surface of the shell and the suppression sheet as absorption materials.
Preferably, the microwave leakage prevention enclosure is made of stainless steel covered with an absorbing material.
Preferably, the absorbent material has the following composition: 40% of cement, 50% of graphite powder and 10% of water.
The method for preparing the rapidly preheated high-efficiency energy-saving shaving board and the shaving board have the beneficial effects that:
1. according to the invention, the process of microwave preheating of the shaving board blank is additionally arranged between the paving process and the pre-pressing process in the preparation process of the shaving board, so that the paved shaving board blank can be quickly preheated by microwaves, the surface and core layers of the shaving board blank are simultaneously heated, and the compactness of the shaving board blank can be increased, the air in the board blank is reduced and the heat transfer efficiency in hot pressing is improved when the shaving board blank preheated by microwaves is pre-pressed.
2. According to the invention, the process of microwave preheating of the shaving board blank is added, so that the laid board blank can be subjected to microwave preheating, and when the microwave-preheated shaving board blank is subjected to hot pressing, the hot pressing temperature rise time of the shaving board blank can be reduced, the curing of an adhesive is accelerated, the hot pressing speed of the shaving board blank is increased, and the production efficiency of the shaving board is improved.
3. According to the invention, by additionally arranging the process of microwave preheating of the shaving board blank, the laid shaving board blank is subjected to microwave preheating to 40-80 ℃ in the preparation process of the shaving board, and when the microwave preheated shaving board blank is subjected to hot pressing, the temperature of the core layer of the shaving board blank can reach more than 100 ℃, the forming and curing speed of the shaving board blank is accelerated, and thus the quality of the shaving board product is improved.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail below. The described embodiments are only some, but not all embodiments of the invention. The examples are illustrative and are intended to be illustrative of the invention and should not be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a method for preparing a rapidly preheated high-efficiency energy-saving shaving board and the shaving board, wherein the method for preparing the shaving board comprises the following steps:
(1) preparing raw materials: selecting wood processing residues as raw materials, and planing by using a flaker to obtain flaky wood shavings;
(2) drying and screening: feeding the flake wood shavings into a dryer for drying, wherein the moisture content of the dried flake wood shavings is 1.8-3.3%; screening and dividing the dried flaky wood shavings into surface layer fine wood shavings and core layer coarse wood shavings;
(3) sizing: the surface layer fine wood shavings and the core layer coarse wood shavings are respectively glued by urea-formaldehyde resin glue, the surface layer fine glue application amount is 8-14%, and the water content of the glued surface layer fine wood shavings is controlled to be 8-15%; the coarse gluing amount of the core layer is 5-8%, and the water content of the glued coarse core layer wood shavings is controlled to be 5-8%;
(4) molding: uniformly spreading the glued surface layer fine wood shavings and the core layer coarse wood shavings into wood shavings plate blanks with a three-layer structure according to the specified weight by using a spreading machine respectively;
(5) microwave preheating of the shaving board blank: conveying the paved wood shaving board blank into a microwave heating device through a conveying device, and performing microwave preheating on the paved wood shaving board blank through a microwave transmitting mechanism arranged in the microwave heating device;
(6) pre-pressing: conveying the shaving board blank preheated by the microwaves into a prepressing machine through a conveying device for prepressing;
(7) hot pressing: conveying the pre-pressed shaving board blank into a hot press through a conveying device for hot press molding to obtain a shaving board blank;
(8) and (3) post-processing: cooling the shaving board rough board, trimming, sanding two sides of the rough board by a sander, sawing into small boards, packaging and storing to obtain the finished shaving board.
And (5) the microwave heating device is a continuous tunnel type water-cooling microwave heating device.
And (5) performing microwave preheating on the paved shaving board blank through a magnetron in the microwave transmitting mechanism.
And (5) controlling the temperature of the shaving board blank preheated by the continuous tunnel type water-cooling microwave heating device to be 40-80 ℃.
The continuous tunnel type water-cooling microwave heating device comprises a tunnel type heating box for conveying the shaving board blank to pass, a microwave transmitting mechanism arranged above the tunnel type heating box, a feeding and discharging port microwave suppressor and an outer cover for preventing microwave leakage. The microwave suppressors at the material inlet and the material outlet are positioned at two ends of the tunnel type heating box and are connected by welding to reduce microwave radiation leakage.
The inlet and outlet microwave suppressor comprises a housing, the housing comprises a top, side walls and a bottom, 4 suppression sheets connected with the top are fixed in an inner cavity between the pair of side walls, and the inner surface of the housing and the suppression sheets are coated with absorption materials. The absorbing material is preferably graphite powder.
The microwave leakage prevention outer cover comprises a top and a side wall, wherein the inner surfaces of the top and the side wall are covered with absorption materials, and the microwave leakage prevention outer cover is made of stainless steel. The absorption material comprises 40% of cement, 50% of graphite powder and 10% of water by weight.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for preparing a rapidly preheated high-efficiency energy-saving shaving board is characterized by comprising the following steps: (1) preparing raw materials: selecting wood processing residues as raw materials, and planing by using a flaker to obtain flaky wood shavings; (2) drying and screening: feeding the flake wood shavings into a dryer for drying, wherein the moisture content of the dried flake wood shavings is 1.8-3.3%; screening and dividing the dried flaky wood shavings into surface layer fine wood shavings and core layer coarse wood shavings; (3) sizing: the surface layer fine wood shavings and the core layer coarse wood shavings are respectively glued by urea-formaldehyde resin glue, the surface layer fine glue application amount is 8-14%, and the water content of the glued surface layer fine wood shavings is controlled to be 8-15%; the coarse gluing amount of the core layer is 5-8%, and the water content of the glued coarse core layer wood shavings is controlled to be 5-8%; (4) molding: uniformly spreading the glued surface layer fine wood shavings and the core layer coarse wood shavings into wood shavings plate blanks with a three-layer structure according to the specified weight by using a spreading machine respectively; (5) microwave preheating of the shaving board blank: conveying the paved wood shaving board blank into a microwave heating device through a conveying device, and performing microwave preheating on the paved wood shaving board blank through a microwave transmitting mechanism arranged in the microwave heating device; (6) pre-pressing: conveying the shaving board blank preheated by the microwaves into a prepressing machine through a conveying device for prepressing; (7) hot pressing: conveying the pre-pressed shaving board blank into a hot press through a conveying device for hot press molding to obtain a shaving board blank; (8) and (3) post-processing: cooling the shaving board rough board, trimming, sanding two sides of the rough board by a sander, sawing into small boards, packaging and storing to obtain the finished shaving board.
2. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 1, is characterized in that: and (5) the microwave heating device is a continuous tunnel type water-cooling microwave heating device.
3. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 2, is characterized in that: and (5) performing microwave preheating on the paved shaving board blank through a magnetron in the microwave transmitting mechanism.
4. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 3, is characterized in that: and (5) controlling the temperature of the shaving board blank preheated by the continuous tunnel type water-cooling microwave heating device to be 40-80 ℃.
5. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 4, is characterized in that: and (5) reducing microwave radiation leakage by arranging a feed inlet and discharge outlet microwave suppressor and an outer cover for preventing microwave leakage in the continuous tunnel type water-cooling microwave heating device.
6. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 5, is characterized in that: the inlet and outlet microwave suppressors take graphite powder covered on the inner surface of the shell and the suppression sheet as absorption materials to absorb leaked microwaves.
7. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 6, is characterized in that: the microwave leakage prevention outer cover is made of stainless steel covered with an absorption material.
8. The method for preparing the shaving board with the rapid preheating, high efficiency and energy saving according to claim 7, is characterized in that: the components of the absorption material are as follows: 40% of cement, 50% of graphite powder and 10% of water.
9. A particle board, characterized in that the particle board is a particle board prepared by the method for preparing a rapidly preheated high-efficiency energy-saving particle board according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406820.XA CN113119265A (en) | 2019-12-31 | 2019-12-31 | Method for preparing high-efficiency energy-saving shaving board by rapid preheating and shaving board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406820.XA CN113119265A (en) | 2019-12-31 | 2019-12-31 | Method for preparing high-efficiency energy-saving shaving board by rapid preheating and shaving board |
Publications (1)
| Publication Number | Publication Date |
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| CN113119265A true CN113119265A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406820.XA Pending CN113119265A (en) | 2019-12-31 | 2019-12-31 | Method for preparing high-efficiency energy-saving shaving board by rapid preheating and shaving board |
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| Country | Link |
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| CN (1) | CN113119265A (en) |
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- 2019-12-31 CN CN201911406820.XA patent/CN113119265A/en active Pending
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Application publication date: 20210716 |
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| WD01 | Invention patent application deemed withdrawn after publication |