CN111251506A - Production method and processing line for mechanically-harvested cotton field film impurity hot-pressing board - Google Patents
Production method and processing line for mechanically-harvested cotton field film impurity hot-pressing board Download PDFInfo
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- CN111251506A CN111251506A CN201911074255.1A CN201911074255A CN111251506A CN 111251506 A CN111251506 A CN 111251506A CN 201911074255 A CN201911074255 A CN 201911074255A CN 111251506 A CN111251506 A CN 111251506A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0224—Screens, sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of residual film recycling, in particular to a production method and a processing line for a mechanical cotton harvesting field film hybrid-thermal pressing board, which comprises the following steps: 1) crushing: crushing the film collecting mixed material of the cotton field machine by a crusher; 2) removing impurities: screening out soil and sand impurities in the crushed membrane impurity crushed materials through a vibrating screen impurity removal device; 3) grinding: mechanically crushing the crushed membrane stalks subjected to impurity removal by a pulverizer; adding an additive; 4) hot-press molding: and carrying out hot press molding on the crushed particle mixed material by a plate hot press molding machine. The invention is suitable for recycling the membrane impurities in the machine-harvested cotton field, takes the membrane stalk mixed material after soil removal as a plate processing raw material, solves the problem of membrane impurity separation, reduces the recycling cost of the membrane impurities, and is beneficial to reducing white pollution.
Description
Technical Field
The invention relates to the technical field of residual film recycling, in particular to a production method and a processing line for a mechanically-harvested cotton field film hybrid-thermal pressing board.
Background
The mulching technology can improve the soil temperature, keep the soil moisture, maintain the soil structure, inhibit salt, protect seedlings, reduce insect pests and the like, and the mulching film is used in a large area in Xinjiang to promote the growth of crops and realize yield increase. However, when the mulching film is used in a large scale, a series of adverse effects are brought, and residual mulching film deposited in a soil layer can damage the soil structure, so that soil nutrition loss is caused, and the crop yield is seriously reduced. At present, the residual film recovery is effective, but the recovered residual film still lacks a system effective treatment mode, so that serious resource waste and secondary pollution are caused. According to related data, resource utilization of farmland mulching films at home and abroad is realized mainly by carrying out granulation treatment after materials are rinsed in a water tank for a long time, the treatment production line has long time consumption, large water consumption, high energy consumption and large occupied area, the requirements on the quality of the treated residual films are strict, the impurity content rate must be controlled in an extremely low range to produce plastic particles, and granulation products are required to be produced again to obtain new products, so that the process is complicated.
Disclosure of Invention
In view of the above, the invention provides a production method and a processing line for a mechanically-harvested cotton field membrane impurity hot-pressing board, and mainly aims to reduce the difficulty of a previous membrane impurity separation process by pressing a processed membrane stalk mixed material, focus on impurity removal on soil removal, solve the problem of membrane impurity separation emphatically, save a membrane impurity separation operation process with high labor intensity and high cost, save a fussy granulation step and reduce the resource utilization cost of residual membranes.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
the embodiment of the invention provides a production method and a processing line for a mechanical cotton harvesting field film hybrid-hot pressing board, which comprises the following steps:
1) crushing: crushing the film collecting mixed material of the cotton field machine by a crusher;
2) removing impurities: screening out soil and sand impurities in the crushed membrane impurity crushed materials through a vibrating screen impurity removal device;
3) grinding: mechanically crushing the crushed membrane stalks subjected to impurity removal by a pulverizer; adding an additive;
4) hot-press molding: and carrying out hot press molding on the crushed particle mixed material by a plate hot press molding machine.
Further, the crusher in the step 1) is a double-shaft toothed cutter crushing roller; the rotating speed of the double-shaft toothed knife crushing roller is 600-800 r/min.
Further, the double-shaft toothed cutter crushing roller in the step 1) crushes mulching film ingredients in the film collecting mixed materials of the cotton field machine into sheets of 40-100 mm, and crushes cotton stalks into short stalks of 30-70 mm.
Further, the film impurity mixture crushed by the double-shaft toothed cutter crushing roller in the step 1) is conveyed to the next processing flow through belt transmission, and is shaken in the conveying process to simply separate impurities such as soil, sand and the like.
Further, the vibrating screen impurity removing device in the step 2) is a gas vibrating type vibrating screen.
Further, the pulverizer in the step 3) is a special pulverizer; the rotating speed of the special flour mill is 2800-3200 r/min, and the crushing amount is 50-120 Kg/h.
Further, the film and stalk mixed crushed materials are mechanically crushed into 30-40 meshes by a special pulverizer in the step 3).
Further, the additives in the step 3) comprise: heat stabilizer, coupling agent, lubricant and foaming agent.
Further, the plate hot-press forming machine in the step 4) is a composite plate hot-press forming machine; the forming pressure of the hot-press forming machine for the composite board is 3MPa, and the preheating temperature of the upper board and the lower board of the flat vulcanizing machine is about 150 ℃.
Further, the conveying of materials between the double-shaft toothed cutter crushing roller and the air vibration type shaking screen and between the air vibration type shaking screen and the special flour mill is completed by a conveying belt; the material transmission between the special flour mill and the plate hot-press forming machine is completed by a pipeline.
The invention has the advantages that when the mulching film is recycled, the focus is on soil removal, the difficulty of film impurity separation is reduced, and the process flow for manufacturing the hot-pressed plate is simplified.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clear, the following detailed description is made with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a production method of a machine-harvested cotton field film impurity hot pressing board and a production method in a processing line.
FIG. 2 is a schematic view of a production line in the method and the line for mechanically-harvested cotton field film hybrid-thermal pressing board production.
Shown in the figure: the device comprises a double-shaft toothed cutter crushing roller 1, a vibrating conveyor belt 2, an air vibrating type shaking screen 3, a vibrating conveyor belt 4, a special pulverizer 5 and a composite board hot-press molding machine 6.
Detailed Description
In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The invention provides a production method and a processing line for a mechanical cotton harvesting field film hybrid hot pressing board, which comprises the following steps:
1) crushing: crushing the film collecting mixed material of the cotton field machine by a crusher; the high-speed operation of the crusher causes the film mix to be crushed to a material size prescribed in the mill, and the crusher can remove a part of the soil and sand.
2) Removing impurities: screening out soil and sand impurities in the crushed membrane impurity crushed materials through a vibrating screen impurity removal device; the soil sand impurities are screened out to avoid damaging the pulverizer, and meanwhile, large-sized materials are screened out and then put into the crusher to be crushed until the size specified by the pulverizer is reached.
3) Grinding: mechanically crushing the membrane stalk crushed aggregates after impurity removal through a pulverizer, wherein the crushed aggregates are in a specification suitable for a plate hot-pressing forming machine; the additive is added to improve the service performance of the product and reduce the cost.
4) Hot-press molding: and carrying out hot press molding on the crushed particle mixed material by a plate hot press molding machine.
According to the production method and the processing line for the mechanical cotton field film impurity hot pressing board, provided by one embodiment of the invention, when residual films are recycled, film stalk mixed materials can be directly used as raw materials, and the difficulty in film impurity separation is reduced. Can carry out make full use of with the plastic film that remains in farmland, reduce the step of separating, washing, stoving incomplete membrane and straw, greatly reduced the cost of recycling of incomplete membrane, it has positive meaning to promoting incomplete membrane recovery and recycle, can effectively reduce the white pollution in farmland.
As a preference of the above embodiment, the crusher in the step 1) is a biaxial serrated knife crushing roller; the rotating speed of the double-shaft toothed knife crushing roller is 600-800 r/min;
preferably, in the step 1), the double-shaft toothed cutter crushing roller is used for crushing mulching film ingredients in the film collecting mixed materials of the cotton field machine into pieces of 40-100 mm, and crushing cotton stalks into rods of 30-70 mm;
as the optimization of the embodiment, the vibrating screen impurity removing device in the step 2) is a gas vibrating type vibrating screen; the air vibration type shaking screen realizes the separation of impurities such as soil, sand and the like in the membrane impurity mixture by carrying out chain type conveying on the broken membrane impurity mixture and shaking the membrane impurity mixture in the conveying process;
as a preference of the above embodiment, the mill in step 3) is a special mill; the rotating speed of the special flour mill is 2800-3200 r/min, and the crushing amount is 50-120 Kg/h;
preferably, the film straw mixed crushed materials are mechanically crushed into 30-40 meshes by a special pulverizer in the step 3);
as a preference of the above embodiment, the additives in step 3) include: heat stabilizer, coupling agent, lubricant and foaming agent. The additives are selected to have good compatibility with the materials, to be compatible with milling conditions, etc., and to take care of synergistic effects and antagonistic effects in the compounding of the additives. The heat stabilizer mainly prevents or delays the thermal degradation of the polymeric material in the invention; the coupling agent can improve the compatibility among the inorganic filler, the inorganic fiber and the matrix resin, and can also improve the interface condition between the wood powder and the polymer; the lubricant is zinc stearate, which mainly improves the flow property of the plastic melt in the invention, reduces or avoids the friction and adhesion of the solvent to the machine, and the like; the foaming agent is added, so that the full dispersion among the components is facilitated, and further, the components can be better filled due to the formation of an internal expansion structure in the foaming process, so that the mixing of the components is realized;
preferably, in the step 4), the plate hot press forming machine is a composite plate hot press forming machine, the forming pressure of the composite plate hot press forming machine is 3MPa, and the preheating temperature of the upper plate and the lower plate of the flat vulcanizing machine is about 150 ℃;
as a preferable mode of the above embodiment, the conveying of the materials between the double-shaft toothed cutter crushing roller and the air vibration type shaking screen and between the air vibration type shaking screen and the special pulverizer is completed by a conveying belt; the material transmission between the special flour mill and the plate hot-press forming machine is completed by pipelines, and the arrangement of the pipelines needs to ensure the uniform transmission of the materials.
Further still, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with such terms being used only to distinguish one element from another. Without departing from the scope of the exemplary embodiments. Similarly, the terms first, second, etc. do not denote any order or order, but rather the terms first, second, etc. are used to distinguish one element from another. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (9)
1. A production method and a processing line for a machine-harvested cotton field film impurity hot pressing board are characterized by comprising the following steps:
1) crushing: crushing the film collecting mixed material of the cotton field machine by a crusher;
2) removing impurities: screening out soil and sand impurities in the crushed membrane impurity crushed materials through a vibrating screen impurity removal device;
3) grinding: mechanically crushing the membrane stalk crushed aggregates after impurity removal through a pulverizer, and adding an additive;
4) hot-press molding: and carrying out hot press molding on the crushed particle mixed material by a plate hot press molding machine.
2. The machine-harvested cotton field film hybrid heating and pressing plate production method and the processing line according to claim 1, wherein the crusher in the step 1) is a double-shaft toothed-blade crushing roller; the rotating speed of the double-shaft toothed knife crushing roller is 600-800 r/min.
3. The production method and the processing line of the machine-harvested cotton field film impurity hot pressing board as claimed in claim 2, wherein the double-shaft toothed cutter crushing roller crushes the mulching film components in the cotton field machine-harvested film impurity mixed material into 40-100 mm sheets, and crushes the cotton stalks into 30-70 mm short stalks.
4. The production method and the processing line of the mechanically harvested cotton field film hybrid-thermal pressing board according to claim 1, wherein the vibrating screen impurity removal device in the step 2) is an air vibrating type vibrating screen.
5. The method and the line for producing the mechanically harvested cotton field film hybrid-thermal compression plate according to claim 1, wherein the pulverizer in the step 3) is a special pulverizer; the rotating speed of the special flour mill is 2800-3200 r/min, and the crushing amount is 50-120 Kg/h.
6. The production method and the processing line of the mechanically harvested cotton field film hybrid-thermal pressed board as claimed in claim 5, wherein the special pulverizer pulverizes the film stalk mixed crushed material into 30-40 meshes.
7. The machine-harvested cotton field film hybrid heating and pressing plate production method and the processing line as claimed in claim 1, wherein the additives in the step 3) comprise: heat stabilizer, coupling agent, lubricant and foaming agent.
8. The production method and the processing line of the mechanically harvested cotton field film hybrid heating and pressing plate as claimed in claim 1, wherein the plate hot-press forming machine in the step 4) is a composite plate hot-press forming machine; the forming pressure of the hot-press forming machine for the composite board is 3MPa, and the preheating temperature of the upper board and the lower board of the flat vulcanizing machine is about 150 ℃.
9. The production method and processing line of the mechanically harvested cotton field film impurity hot pressing board according to claim 1, wherein the conveying of the materials between the double-shaft toothed cutter crushing roller and the air vibration type shaking screen and between the air vibration type shaking screen and the special pulverizer is completed by a conveying belt; the material transmission between the special flour mill and the plate hot-press forming machine is completed by a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911074255.1A CN111251506A (en) | 2019-11-06 | 2019-11-06 | Production method and processing line for mechanically-harvested cotton field film impurity hot-pressing board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911074255.1A CN111251506A (en) | 2019-11-06 | 2019-11-06 | Production method and processing line for mechanically-harvested cotton field film impurity hot-pressing board |
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| CN111251506A true CN111251506A (en) | 2020-06-09 |
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| CN201911074255.1A Pending CN111251506A (en) | 2019-11-06 | 2019-11-06 | Production method and processing line for mechanically-harvested cotton field film impurity hot-pressing board |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200808509A (en) * | 2006-08-02 | 2008-02-16 | shi-zhong Xu | Method for manufacturing straw boards |
| CN102825791A (en) * | 2012-09-04 | 2012-12-19 | 广州市威格林环保科技有限公司 | Production method for wood-plastic composite material |
| CN205236138U (en) * | 2015-12-23 | 2016-05-18 | 青岛同三塑料机械有限公司 | Novel grinding device |
| CN110238987A (en) * | 2019-07-24 | 2019-09-17 | 石河子大学 | A kind of wood plastic particles manufacturing method |
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2019
- 2019-11-06 CN CN201911074255.1A patent/CN111251506A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200808509A (en) * | 2006-08-02 | 2008-02-16 | shi-zhong Xu | Method for manufacturing straw boards |
| CN102825791A (en) * | 2012-09-04 | 2012-12-19 | 广州市威格林环保科技有限公司 | Production method for wood-plastic composite material |
| CN205236138U (en) * | 2015-12-23 | 2016-05-18 | 青岛同三塑料机械有限公司 | Novel grinding device |
| CN110238987A (en) * | 2019-07-24 | 2019-09-17 | 石河子大学 | A kind of wood plastic particles manufacturing method |
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