阅读说明：本技术 一种超强刨花板生产工艺 (Production process of super-strength shaving board ) 是由 李安华 王鹏 赵洪亮 滕广学 王永锋 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种超强刨花板生产工艺,(1)原料削片处理,运输到摆动筛,运送过程中排除金属成分；(2)摆动筛筛选之后过大木片返回削片机进行再加工,合格木片进入木片料仓,再进入过度料仓；(3)木片进行刨片后进入湿刨花料仓；(4)湿刨花经过预热管道预热,然后进入干燥机进行干燥；(5)干燥之后刨花经过旋风除尘器除尘,再经过分料器粉料之后进入三层刨花筛进行筛选；(6)三层刨花筛将刨花分别分成过大刨花、合格芯层刨花、合格表层刨花筛选出来,本发明实现了大大提高刨花板的静曲强度、内胶合强度,提高物理力学性能,密度相对减小,相对应同类产品的节省原材料,降低成本投入,降低能耗,节省胶水的功能。(The invention discloses a production process of an ultra-strong shaving board, which comprises the following steps of (1) chipping and processing raw materials, conveying the raw materials to a swing screen, and removing metal components in the conveying process; (2) returning the oversize wood chips after being screened by the swing screen to a chipper for reprocessing, and enabling the qualified wood chips to enter a wood chip bin and then enter a transition bin; (3) after being sliced, the wood chips enter a wet wood shaving bin; (4) preheating wet wood shavings through a preheating pipeline, and then drying the wet wood shavings in a dryer; (5) after drying, the wood shavings are dedusted by a cyclone deduster, and then are sieved by a three-layer wood shavings sieve after being subjected to powder lot of a distributor; (6) the three-layer shaving screen separates the shavings into oversize shavings, qualified core layer shavings and qualified surface layer shavings, and the screening method greatly improves the static bending strength and the internal bonding strength of the shaving board, improves the physical and mechanical properties, relatively reduces the density, saves raw materials, reduces the cost input, reduces the energy consumption and saves glue corresponding to similar products.)

1. A production process of super-strong shaving board comprises the following steps:

(1) the raw materials such as branches and twigs are chipped by a chipping machine, the wood chips are transported to a swing sieve by a conveyor, and metal components in the wood chips are removed by an iron remover in the transportation process;

(2) after being screened by the swing screen, the oversize wood chips are returned to a chipper for reprocessing by a conveyer, and the qualified wood chips enter a wood chip bin by the conveyer and an iron remover and then enter a transition bin by the conveyer;

(3) the wood chips are transferred from the transition bin to a flaker for flaying, the thin chips enter a wet flaying bin through a conveyer, and dust is removed through a cyclone dust collector in the flaying and conveying processes;

(4) conveying the wet wood shavings from the wood chip bin to a preheating pipeline through a conveyor for preheating, and then drying the wet wood shavings in a dryer;

(5) after drying, the wood shavings are dedusted by a cyclone deduster, and then are sieved by a three-layer wood shavings sieve after being subjected to powder lot of a distributor;

(6) the three-layer wood shaving sieve is used for respectively screening the wood shavings into oversize wood shavings, qualified core layer wood shavings and qualified surface layer wood shavings, sieving and separating out ultrafine wood powder, and conveying the wood powder into a wood powder bin through wind power conveying for later incineration;

(7) qualified surface layer wood shavings enter a surface layer bin after passing through a conveyor air inlet selector, the qualified core layer wood shavings are divided into two parts by adding a distributor, one part enters the core layer wood shavings bin through a conveyor, the other part enters a grinding machine through the conveyor, and the overlarge wood shavings directly enter the core layer wood shavings bin;

(8) feeding the material ground by the grinding machine through a cyclone dust collector, conveying the material to a single-layer wood shaving sieve, conveying the qualified surface wood shavings to a surface dry wood shavings bin after screening, and feeding the unqualified surface material to the grinding machine through the conveyor for grinding again so as to circulate;

(9) the oversize wood shavings screened by the wood shavings sieve are directly conveyed to a core layer wood shavings bin by a conveyer (air conveying or other conveying modes can be adopted);

(10) after entering a core layer wood shaving bin, the oversize wood shavings enter sizing equipment through conveying equipment, and surface layer wood shavings and core layer wood shavings enter the sizing equipment through a conveyer;

(11) after the oversized wood shavings, the surface layer wood shavings and the core layer wood shavings are glued, the mixed wood shavings enter a common homogeneous shaving board paving machine and then enter subsequent forming workshop section equipment, and finally super-strong shaving board production is formed.

Technical Field

The invention relates to the field of shaving boards, in particular to a production process of an ultra-strong shaving board.

Background

The existing process is that small diameter wood or branch wood is chipped into small wood blocks with the thickness of about 2cm-3cm by a chipper, the small diameter wood or branch wood is conveyed into the chipper by a middle conveyor and is stored, the small diameter wood or branch wood is conveyed into the chipper by the conveyor, wood chips are fed and sliced by the chipper to form machine-made wood shavings, the machine-made wood shavings are conveyed into a wood shavings sieve by the conveyor to be screened, and the screened material of the wood shavings is divided into wood powder, qualified surface layer wood shavings, qualified core layer wood shavings and large wood shavings. The general process is to carry wood flour to in the wood flour feed bin for burning later, and qualified surface layer wood shavings enter the surface layer feed bin, and qualified core layer wood shavings enter the core layer feed bin, and general surface layer material volume all can not satisfy the production demand, so just through entering the polisher with too big wood shavings and passing through the polisher will be oversize material grinding into little wood shavings, pass through the conveyer and enter qualified surface layer feed bin, then advance next technology.

The existing domestic flaker equipment is basically mature, if human factors are not considered, the proportion of basically qualified core layer wood shavings and large wood shavings accounts for 1:15 when the equipment is normally used, the existing process is that the large wood shavings planed by a flaker are all ground into fine surface layer materials and are all used on the surface layer of a shaving board, the main defect is that the large wood shavings are ground into the fine surface layer materials through a grinding machine, the good raw material of the core layer wood shavings are smashed to cause relative process waste, the large wood shavings play a great decisive role in the strength of the shaving board, the big wood shavings are smashed again, on one hand, the resource waste is caused, and on the other hand, the big wood shavings are smashed again, and the relative energy consumption is caused to cause a part of waste.

Therefore, the process for reducing the energy consumption for manufacturing the surface material is designed, and the process for reducing the energy consumption, enhancing the overall structural performance of the shaving board and improving the overall quality such as static bending strength of the shaving board is the problem to be solved by the inventor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a production process of a super-strong shaving board, which can reduce the energy consumption for manufacturing surface materials, not only reduces the energy consumption, but also enhances the overall structural performance of the shaving board and improves the overall quality functions of the shaving board such as static bending strength and the like by changing the process.

The technical scheme adopted by the invention for solving the technical problems is as follows: a production process of super-strong shaving board comprises the following steps:

(1) the raw materials such as branches and twigs are chipped by a chipping machine, the wood chips are transported to a swing sieve by a conveyor, and metal components in the wood chips are removed by an iron remover in the transportation process;

(2) after being screened by the swing screen, the oversize wood chips are returned to a chipper for reprocessing by a conveyer, and the qualified wood chips enter a wood chip bin by the conveyer and an iron remover and then enter a transition bin by the conveyer;

(3) the wood chips are transferred to a flaker from the transition bin for flaked, the thin chips enter a wet wood chip bin through a conveyer, and dust is removed through a cyclone dust collector in the process;

(4) preheating wet wood shavings through a preheating pipeline, and then drying the wet wood shavings in a dryer;

(5) after drying, the wood shavings are dedusted by a cyclone deduster, and then are sieved by a three-layer wood shavings sieve after being subjected to powder lot of a distributor;

(6) the three-layer wood shaving sieve is used for respectively screening the wood shavings into oversize wood shavings, qualified core layer wood shavings and qualified surface layer wood shavings, separating out ultrafine wood powder from a lower outlet, and conveying the wood powder into a wood powder bin for later incineration;

(7) qualified surface layer wood shavings enter a surface layer bin after passing through a conveyor air inlet selector, the qualified core layer wood shavings are divided into two parts by adding a distributor, one part enters the core layer wood shavings bin through a conveyor, the other part enters a polisher through the conveyor, and the oversize wood shavings enter the core layer wood shavings bin;

(8) feeding the material ground by the grinding machine through a cyclone dust collector, conveying the material to a single-layer wood shaving sieve, conveying the qualified surface wood shavings to a surface dry wood shavings bin after screening, and feeding the unqualified surface material to the grinding machine through the conveyor for grinding again so as to circulate;

(9) the oversize wood shavings screened by the wood shavings sieve are directly conveyed to a core layer wood shavings bin by a conveyer (air conveying or other conveying modes can be adopted);

(10) after entering a core layer wood shaving bin, the oversize wood shavings enter sizing equipment through conveying equipment, and surface layer wood shavings and core layer wood shavings enter the sizing equipment through a conveyer;

(11) after the oversized wood shavings, the surface layer wood shavings and the core layer wood shavings are glued, the mixed wood shavings enter a common homogeneous shaving board paving machine and then enter subsequent forming workshop section equipment, and finally super-strong shaving board production is formed.

The invention has the beneficial effects that:

1. according to the invention, the oversize wood shavings screened by the wood shavings screen are added into the core material for manufacturing the shaving board again through process adjustment, so that the structural form and the integral bonding strength of the wood shavings of the core layer of the shaving board are changed, and the functions of greatly improving the static bending strength and the internal bonding strength of the shaving board and improving the physical and mechanical properties are realized.

2. The density of the board is relatively reduced on the basis of improving the strength of the shaving board with the same thickness, and the shaving board has the functions of saving raw materials, reducing cost input, reducing energy consumption and saving glue corresponding to similar products.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The invention will now be further described with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Further, it should be understood that various changes and modifications of the invention may be made by those skilled in the art after reading the teachings herein, and such equivalents may fall within the scope of the invention as defined in the appended claims.

Referring to fig. 1, the invention relates to a structure diagram of a bamboo-wound composite rain and sewage pipe, and a production process of a super-strength shaving board, which comprises the following steps:

(1) the raw materials such as branches and twigs are chipped by a chipping machine, the wood chips are transported to a swing sieve by a conveyor, and metal components in the wood chips are removed by an iron remover in the transportation process;

(2) after being screened by the swing screen, the oversize wood chips are returned to a chipper for reprocessing by a conveyer, and the qualified wood chips enter a wood chip bin by the conveyer and an iron remover and then enter a transition bin by the conveyer;

(3) the wood chips are transferred to a flaker from the transition bin for flaked, the thin chips enter a wet wood chip bin through a conveyer, and dust is removed through a cyclone dust collector in the process;

(4) preheating wet wood shavings through a preheating pipeline, and then drying the wet wood shavings in a dryer;

(5) after drying, the wood shavings are dedusted by a cyclone deduster, and then are sieved by a three-layer wood shavings sieve after being subjected to powder lot of a distributor;

(6) the three-layer wood shaving sieve is used for respectively screening the wood shavings into oversize wood shavings, qualified core layer wood shavings and qualified surface layer wood shavings, separating out ultrafine wood powder from a lower outlet, and conveying the wood powder into a wood powder bin for later incineration;

(7) qualified surface layer wood shavings enter a surface layer bin after passing through a conveyor air inlet selector, the qualified core layer wood shavings are divided into two parts by adding a distributor, one part enters the core layer wood shavings bin through a conveyor, the other part enters a polisher through the conveyor, and the oversize wood shavings enter the core layer wood shavings bin;

(8) feeding the material ground by the grinding machine through a cyclone dust collector, conveying the material to a single-layer wood shaving sieve, conveying the qualified surface wood shavings to a surface dry wood shavings bin after screening, and feeding the unqualified surface material to the grinding machine through the conveyor for grinding again so as to circulate;

(9) the oversize wood shavings screened by the wood shavings sieve are directly conveyed to a core layer wood shavings bin by a conveyer (air conveying or other conveying modes can be adopted);

(10) after entering a core layer wood shaving bin, the oversize wood shavings enter sizing equipment through conveying equipment, and surface layer wood shavings and core layer wood shavings enter the sizing equipment through a conveyer;

(11) after the oversized wood shavings, the surface layer wood shavings and the core layer wood shavings are glued, the mixed wood shavings enter a common homogeneous shaving board paving machine and then enter subsequent forming workshop section equipment, and finally super-strong shaving board production is formed.

By adding oversized wood shavings into the core material of the shaving board, the physical and mechanical properties of the shaving board (standard for shaving board GB/T4897-2015) are greatly improved, and the competitive advantage of the same product of a manufacturer in the shaving board industry is improved.

The general particle board performance parameters are shown in the following table:

surface bonding strength of common shaving board

Bonding strength of common shaving board core layer

Static bending strength of common shaving board

Superstrong shaving board performance parameters (water absorption expansion rate is reduced, plate blank quality is improved, density is 96.3% of common shaving board, and parameters are basically unchanged)

Super strength shaving board surface bonding strength (basically same as common shaving board)

Super strength chipboard core bonding strength (core bonding strength is 1.499 times of common chipboard)

Super-strength chipboard static bending strength (static bending strength is 1.383 times of common chipboard)

The invention adds the oversize wood shavings screened by the wood shavings screen into the core layer material for manufacturing the shaving board again through process adjustment, changes the structural form and the integral bonding strength of the core layer wood shavings of the shaving board, and realizes the functions of greatly improving the static bending strength and the internal bonding strength of the shaving board and improving the physical and mechanical properties.