CN112223472A - Slab heating process - Google Patents
Slab heating process Download PDFInfo
- Publication number
- CN112223472A CN112223472A CN202011117830.4A CN202011117830A CN112223472A CN 112223472 A CN112223472 A CN 112223472A CN 202011117830 A CN202011117830 A CN 202011117830A CN 112223472 A CN112223472 A CN 112223472A
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- Prior art keywords
- adjusting
- equipment
- heating process
- shavings
- slab heating
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
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- 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
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- 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
Abstract
The invention relates to the technical field of slab production, and discloses a slab heating process, which comprises the following steps: the method comprises the following steps: preparing big wood shavings: s1, obtaining large wood chips by adjusting the number of flying knives of a knife drum and adjusting the size of a bottom sieve pore and the feeding speed of a chipping machine; s2, screening the qualified large wood chips, and then carrying out flaking processing to obtain large wood chips, wherein the second step is as follows: drying the wood shavings: drying the large shavings obtained in the step one by drying equipment; step three: wood shaving and sorting: and adjusting the screen mesh in the selected super-screen equipment, and adjusting the air quantity of the core layer winnowing machine. This slab heating technology through increasing the preheating technology to the slab, can improve 10 ~ 20% output under the condition of proof quality, and the cost is lower, does benefit to the profit of enterprise, and market competition is strong, utilizes the change of production technology simultaneously, produces the panel of high strength low density, and anti crooked performance is good, satisfies most customization furniture cabinet body large-span.
Description
Technical Field
The invention relates to the technical field of slab production, in particular to a slab heating process.
Background
Particle boards, particle boards and bagasse boards, which are artificial boards made of crushed materials made of wood or other lignocellulose materials and glued under the action of heat and pressure after an adhesive is applied, are mainly used for furniture manufacturing and building industry and train and automobile carriage manufacturing, and in recent years, the customized furniture industry in China is vigorously developed, and the rapid development of the particle board industry is also driven.
At present, with the improvement of living standard, because the cost of manpower, raw materials and other spare part products is continuously improved, the sale price of plates is always lowered, under the condition, enterprises want to be profitable, only an energy-saving and consumption-reducing route is taken, the energy-saving and consumption-reducing route is closely related to the yield, the higher the yield in unit time is, the lower the unit consumption is, in the existing production process of the shaving plate blank, the yield in unit time cannot be greatly improved all the time, the profit of the enterprises is lower, and the market competitiveness of the product is weaker, so that the plate blank heating process is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a slab heating process, which has the advantages of preheating a slab to achieve 10-20% of yield under the premise of ensuring the quality, and the like, and solves the problems that the sales price of a plate is lowered all the time due to continuous improvement of the cost of manpower, raw materials and other spare part products, and the yield in unit time cannot be greatly improved all the time in the production process of a shaving slab, so that the profit of an enterprise is low, and the market competitiveness of the product is weak.
(II) technical scheme
In order to realize the purpose of improving the yield by 10-20% under the precondition of ensuring the quality by preheating the plate blank, the invention provides the following technical scheme: a plate blank heating process comprises the following steps:
the method comprises the following steps: preparing large wood shavings
S1, obtaining large wood chips by adjusting the number of flying knives of a knife drum and adjusting the size of a bottom sieve pore and the feeding speed of a chipping machine;
s2, screening the qualified large wood chips obtained in the step S1, and then carrying out flaking processing to obtain large wood shavings;
step two: drying the shavings
Drying the large shavings obtained in the step one by drying equipment;
step three: sorting wood shavings
Adjusting a screen mesh in the selected super-screen equipment, and adjusting the air quantity of the core layer winnowing machine;
step four: applying glue to wood shavings
Conveying the raw materials sorted in the third step into a glue mixing system for gluing;
step five: preheating of slabs
S3, conveying steam and heat conduction oil of the heat source equipment to a paving reserved section for later use;
s4, performing heat energy conversion on steam and heat conducting oil in the heat source equipment through heat exchange equipment;
s5, transferring the heat energy converted by the heat exchange device in the S4 from the heat source device in the S3 into the plate blank through the heat conduction device;
s6, adjusting a pressure curve of the press to be a relatively stable curve;
step six: hot press forming
Mechanically hot pressing the plate blank by a press;
step seven: cooling and polishing
And carrying out heat exchange on the hot-press formed plate blank through special cooling equipment, and polishing through polishing equipment after cooling.
Preferably, the air inlet end of the cooling device in the seventh step is communicated with the air inlet end of the drying device in the second step through a pipeline, and the pipeline conducts heat exchanged during the slab cooling to the air inlet end position of the drying device in the second step.
Preferably, the shape of the large shavings obtained in S1 is thin and flat.
Preferably, in the fourth step, before sizing, polyurethane and an auxiliary agent are added into the adhesive in a proper ratio.
Preferably, in the second step, the shavings planed by different blade extension amounts need to be dried.
Preferably, in the seventh step, dust removal operation during polishing needs to be performed by dust removal equipment.
Preferably, after the third step is finished, the actual working process and the sorting effect of the system need to be experimentally detected, and then the states represented by the mechanisms need to be observed and recorded.
(III) advantageous effects
Compared with the prior art, the invention provides a plate blank heating process, which has the following beneficial effects:
1. the slab heating process can facilitate the control of the pressure curve of the subsequent press by adding the slab preheating process, and can lead the curve to be more stable by adjusting the pressure curve of the press, therefore, the yield can be improved under the condition of ensuring the quality, the yield can be improved by 10-20 percent, the energy consumption is not changed, the productivity can be improved by about 10-20%, the cost is lower, the profit of enterprises is facilitated, the cost of the same product is reduced, the market has competitive advantage, large and thin large wood shavings can be produced through the first step and the second step, therefore, high-strength and low-density shaving board blanks can be obtained in subsequent production, the density can generally reach 630Kg/m reduction, physicochemical inspection indexes are unchanged and improved, the mechanical property is better, the product quality is higher, the high bending resistance is good, and the large span of most customized furniture cabinets can be met.
2. According to the plate blank heating process, heat exchanged during cooling in the step seven is conducted to the drying equipment in the step two, heat energy can be reused, waste of heat energy is reduced, energy consumption is saved, polyurethane and an auxiliary agent are added into an adhesive in a proper proportion before gluing, the effect of reducing formaldehyde content can be achieved, the formaldehyde release amount is ultra-low, the plate blank heating process is more environment-friendly, the environment-friendly performance after production of products is improved, the actual working process and the sorting effect of the system are detected in an experiment, then the states shown by all mechanisms are observed and recorded, later analysis and optimization calculation can be facilitated, finally, finished products are produced, comprehensive performance indexes of the finished products are inspected, dust of produced powder fragments and the like can be removed through the installed dust removing equipment, and the influence of the powder fragments on the environment is reduced.
Drawings
Fig. 1 is a block diagram of a slab heating process according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, a slab heating process includes the following steps:
the method comprises the following steps: preparing large wood shavings
S1, obtaining large wood chips by adjusting the number of flying knives of a knife drum and adjusting the size of a bottom sieve pore and the feeding speed of a chipping machine;
s2, screening the qualified large wood chips obtained in the step S1, and then carrying out flaking processing to obtain large wood shavings;
step two: drying the shavings
Drying the large shavings obtained in the step one by drying equipment;
step three: sorting wood shavings
Adjusting a screen mesh in the selected super-screen equipment, and adjusting the air quantity of the core layer winnowing machine;
step four: applying glue to wood shavings
Conveying the raw materials sorted in the third step into a glue mixing system for gluing;
step five: preheating of slabs
S3, conveying steam and heat conduction oil of the heat source equipment to a paving reserved section for later use;
s4, performing heat energy conversion on steam and heat conducting oil in the heat source equipment through heat exchange equipment;
s5, transferring the heat energy converted by the heat exchange device in the S4 from the heat source device in the S3 into the plate blank through the heat conduction device;
s6, adjusting a pressure curve of the press to be a relatively stable curve;
step six: hot press forming
Mechanically hot pressing the plate blank by a press;
step seven: cooling and polishing
And carrying out heat exchange on the hot-press formed plate blank through special cooling equipment, and polishing through polishing equipment after cooling.
The cooling device in the seventh step is communicated with the air inlet end of the drying device in the second step through a pipeline, the pipeline conducts the heat exchanged during the slab cooling to the air inlet end position of the drying device in the second step, the heat exchanged during the cooling can be conducted to the drying device in the second step through the pipeline, and the air inlet end of the drying device sucks hot air, so that the heat energy can be recycled, the waste of the heat energy is reduced, and the energy consumption is saved.
The shape of the big wood shavings that obtains in S1 is thin and flat, guarantees that the density of the wood shavings slab of follow-up production is lower, and intensity is enough high, and density generally can reach and reduce 630Kg/m year, and mechanical properties is good, can satisfy most customization furniture cabinet body large-span, high anti crooked requirement, and it is few to produce the crushed aggregates moreover, can not influence conveying equipment and transport, reduces raw and other materials extravagant.
And step four, before gluing, polyurethane and an auxiliary agent are added into the adhesive in a proper proportion, so that the formaldehyde-reducing effect can be achieved, and the environmental protection performance of the product after production is improved.
And in the second step, the wood shavings planed by different cutter extension amounts are dried, the wood shavings are easier to dry in subsequent drying, the warping deformation of the wood shavings is smaller, the subsequent hot-press molding is facilitated, and the product quality is improved.
And in the seventh step, dust removal work during polishing is required through dust removal equipment, dust and the like generated during polishing can be absorbed and treated, the influence of powder scraps on the workshop environment is reduced, and the influence of workers on bodies caused by the fact that the workers suck the powder scraps is avoided.
After the third step is finished, the actual working process and the sorting effect of the system need to be tested, and then the states of all mechanisms are observed and recorded, so that the later analysis and optimization calculation are facilitated, the finally produced finished product is inspected for comprehensive performance indexes, and the subsequent process optimization can be facilitated.
In conclusion, according to the slab heating process, the large wood chips are obtained by adjusting the number of the flying cutters of the cutter drum and adjusting the size and the feeding speed of the mesh opening of the chipper, and the subsequent wood shaving processing is matched, so that the thin and flat large wood shavings can be produced, the strength of the wood shavings slab processed subsequently is high, the density is low, the density can generally be reduced by 630Kg/m, the physical and chemical inspection indexes are unchanged and improved, the mechanical property is better, the product quality is higher, the requirements of large span and high bending resistance of most customized furniture cabinets can be met, the crushed materials generated by the thin and flat large wood shavings are less, the conveying of conveying equipment is not influenced, the waste of raw materials is reduced, the control of the subsequent press pressure curve can be facilitated by the slab preheating process in the fifth step, the press pressure curve is adjusted and made to be more stable, so that the yield can be improved under the condition of ensuring the quality, the yield can be improved by 10-20%, the energy consumption is unchanged, the productivity can be improved by about 10-20%, the cost is lower, (the average power consumption of 1000 square/day is about 11.5 ten thousand degrees and 0.7 yuan/degree, and the total power consumption is 80500 yuan/degree to 80.5 yuan/degree, the power consumption after the production is unchanged, the yield can reach 1200 yuan/degree to 67 yuan/degree, each party is calculated to save 13.5 yuan, and each year is calculated to save 445.5 yuan according to 33 ten thousand parties every year), the enterprise profit is facilitated, the cost of the same product is reduced, and the shaving board blank has competitive advantage in the market.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A slab heating process is characterized in that: the method comprises the following steps:
the method comprises the following steps: preparing large wood shavings
S1, obtaining large wood chips by adjusting the number of flying knives of a knife drum and adjusting the size of a bottom sieve pore and the feeding speed of a chipping machine;
s2, screening the qualified large wood chips obtained in the step S1, and then carrying out flaking processing to obtain large wood shavings;
step two: drying the shavings
Drying the large shavings obtained in the step one by drying equipment;
step three: sorting wood shavings
Adjusting a screen mesh in the selected super-screen equipment, and adjusting the air quantity of the core layer winnowing machine;
step four: applying glue to wood shavings
Conveying the raw materials sorted in the third step into a glue mixing system for gluing;
step five: preheating of slabs
S3, conveying steam and heat conduction oil of the heat source equipment to a paving reserved section for later use;
s4, performing heat energy conversion on steam and heat conducting oil in the heat source equipment through heat exchange equipment;
s5, transferring the heat energy converted by the heat exchange device in the S4 from the heat source device in the S3 into the plate blank through the heat conduction device;
s6, adjusting a pressure curve of the press to be a relatively stable curve;
step six: hot press forming
Mechanically hot pressing the plate blank by a press;
step seven: cooling and polishing
And carrying out heat exchange on the hot-press formed plate blank through special cooling equipment, and polishing through polishing equipment after cooling.
2. A slab heating process according to claim 1, wherein: and the air inlet ends of the cooling device in the seventh step and the drying device in the second step are communicated through a pipeline, and the pipeline conducts heat exchanged during the cooling of the plate blank to the position of the air inlet end of the drying device in the second step.
3. A slab heating process according to claim 1, wherein: the shape of the large shavings obtained in said S1 is thin and flat.
4. A slab heating process according to claim 1, wherein: and step four, before sizing, adding polyurethane and an auxiliary agent in a proper proportion into the adhesive.
5. A slab heating process according to claim 1, wherein: and in the second step, the wood shavings planed by different cutter extension amounts need to be dried.
6. A slab heating process according to claim 1, wherein: and in the seventh step, dust removal work is required to be performed through dust removal equipment during polishing.
7. A slab heating process according to claim 1, wherein: after the third step is finished, the actual working process and the sorting effect of the system need to be tested, and then the states of all mechanisms need to be observed and recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011117830.4A CN112223472A (en) | 2020-10-19 | 2020-10-19 | Slab heating process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011117830.4A CN112223472A (en) | 2020-10-19 | 2020-10-19 | Slab heating process |
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| CN112223472A true CN112223472A (en) | 2021-01-15 |
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| CN202011117830.4A Pending CN112223472A (en) | 2020-10-19 | 2020-10-19 | Slab heating process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815084A (en) * | 2021-09-26 | 2021-12-21 | 佳诺威集团股份有限公司 | Raw material treatment method based on moxa board production |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198685A (en) * | 2011-05-13 | 2011-09-28 | 浙江安吉强裕人造板有限公司 | Method for producing uniform-density bamboo shaving board |
| CN206514524U (en) * | 2017-03-06 | 2017-09-22 | 惠州市岳鑫人造板有限公司 | Flakeboard Product Line comprehensive utilization system for heat energy |
| CN206974016U (en) * | 2017-04-26 | 2018-02-06 | 广东五联木业集团有限公司 | A kind of wood shavings sheet metal forming drying unit |
| CN109262795A (en) * | 2018-11-05 | 2019-01-25 | 嘉木远景（北京）科技有限公司 | A kind of particieboard preparation method using microwave preheating |
| CN110091409A (en) * | 2019-06-06 | 2019-08-06 | 江苏慧典新材有限公司 | A kind of low-density can facing oriented wood chipboard |
| CN111113607A (en) * | 2019-12-10 | 2020-05-08 | 华南农业大学 | Shaving board and preparation method and application thereof |
-
2020
- 2020-10-19 CN CN202011117830.4A patent/CN112223472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198685A (en) * | 2011-05-13 | 2011-09-28 | 浙江安吉强裕人造板有限公司 | Method for producing uniform-density bamboo shaving board |
| CN206514524U (en) * | 2017-03-06 | 2017-09-22 | 惠州市岳鑫人造板有限公司 | Flakeboard Product Line comprehensive utilization system for heat energy |
| CN206974016U (en) * | 2017-04-26 | 2018-02-06 | 广东五联木业集团有限公司 | A kind of wood shavings sheet metal forming drying unit |
| CN109262795A (en) * | 2018-11-05 | 2019-01-25 | 嘉木远景（北京）科技有限公司 | A kind of particieboard preparation method using microwave preheating |
| CN110091409A (en) * | 2019-06-06 | 2019-08-06 | 江苏慧典新材有限公司 | A kind of low-density can facing oriented wood chipboard |
| CN111113607A (en) * | 2019-12-10 | 2020-05-08 | 华南农业大学 | Shaving board and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815084A (en) * | 2021-09-26 | 2021-12-21 | 佳诺威集团股份有限公司 | Raw material treatment method based on moxa board production |
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