CN114106444A - Bio-based degradation blown film master batch and production process thereof - Google Patents
Bio-based degradation blown film master batch and production process thereof Download PDFInfo
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- CN114106444A CN114106444A CN202111535463.4A CN202111535463A CN114106444A CN 114106444 A CN114106444 A CN 114106444A CN 202111535463 A CN202111535463 A CN 202111535463A CN 114106444 A CN114106444 A CN 114106444A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
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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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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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
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a bio-based degradable blown film master batch and a production process thereof, wherein the bio-based degradable blown film master batch comprises the following components: biological refined starch, polyethylene resin, a compatilizer, a coupling agent, an antioxidant and a lubricant. The process comprises the following steps: a. obtaining biological refined starch; b. removing impurities from the refined biological refined starch; c. heating and dehydrating the biological refined starch; d. mixing polyethylene resin, biological refined starch, a lubricant, a compatilizer, a coupling agent and an antioxidant; e. putting the materials into an automatic feeding device; f. sealing the automatic feeding device and the double-screw extruder; g. extruding to form master batches; h. the cleaning material conveying pipe, the first hose and the second hose. The obtained master batch can be degraded in natural environment, thereby reducing environmental pollution. Simultaneously, make material transport stability good, can evenly, continuously send into twin-screw extruder through automatic material conveying device with the material of joining in marriage in, improve the efficiency of master batch production.
Description
Technical Field
The invention belongs to the technical field of plastic products, and particularly relates to a bio-based degradable blown film master batch and a production process thereof.
Background
Plastics, as a new material, have been developed vigorously from the middle of the 20 th century and show a continuous growth situation year by year. Plastic products are now in various industries of human activity; the plastic product has wide application in various fields, and the plastic product is more and more difficult to leave in daily life. While the plastic industry has developed, plastic materials have met with two challenges: (1) the resources are limited. High molecular compounds such as plastics are mainly derived from petroleum, which is a non-renewable resource and has been gradually exhausted on the earth. (2) Pollution to the ecological environment. At present, the yield of plastics in the world reaches two hundred million tons, and the yield of plastics in China is about 2000 ten thousand tons every year. More and more plastic products, after a period of use, become waste plastic products. Since the plastic product is hard to be decomposed, the amount of the plastic product to be secondarily recycled is less than 50% of the amount of the plastic product to be produced. Therefore, the waste plastic products form a large amount of garbage, cause serious environmental pollution problems, and threaten the living environment of human beings.
Disposable plastic products account for a large proportion of plastic waste. Because the waste plastics have small density, are difficult to degrade and recycle, float in the living environment of people, cause great damage to the ecological environment and form extremely obvious visual pollution. Aiming at the technical problem, the prior art discloses an invention patent named biological starch degradable plastic master batch, a production method thereof and degradable plastic (application number: CN 201010168047.0).
In the prior art, a prepared material is put into an automatic feeding device, and then the prepared material is sent into a double-screw extruder through the automatic feeding device, however, a certain distance exists between the automatic feeding device and the double-screw extruder, and if the automatic feeding device is communicated with the double-screw extruder through a hose, the material conveying stability is poor; if adopt rigid pipeline to communicate automatic material conveying device and twin-screw extruder, when pipeline and automatic material conveying device were connected, there was certain distance in the junction of pipeline and twin-screw extruder, and the leakproofness is relatively poor.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a bio-based degradable blown film master batch and a production process thereof, and the obtained master batch can be degraded in a natural environment, so that the environmental pollution is reduced.
In the production technology, the region between automatic material conveying device and double screw extruder sets up rigid material conveying pipe, region between material conveying pipe and automatic material conveying device, region between material conveying pipe and double screw extruder sets up the hose, through the length that changes the hose, make material conveying pipe, the hose, sealing connection between automatic material conveying device and the double screw extruder, and material conveying pipe length is longer, make material transport stability good, can be through the automatic material conveying device with the material of joining in marriage evenly, send into the double screw extruder in succession, the efficiency of master batch production is improved. Moreover, the hose is conveniently separated from the automatic feeding device, the hose is separated from the double-screw extruder, the material conveying pipes are adjusted to be in a horizontal position, all the material conveying pipes are located on the same horizontal plane, then the hose and the material conveying pipes are communicated through the water conveying pipes, water can be supplied to all the hose and the material conveying pipes for cleaning, residual materials in the hose and the material conveying pipes are removed, and the accuracy of data of master batches produced next time is ensured.
In order to solve the technical problems, the invention adopts the following technical scheme:
the bio-based degradable blown film master batch is characterized by comprising the following components: the biological refined starch is prepared from potato and corn serving as raw materials and refined to 800-1200 meshes.
The production method of the bio-based degradable blown film master batch is characterized by comprising the following steps:
a. the potato and the corn are used as raw materials to be refined to obtain biological refined starch, the biological refined starch is refined to 800-1200 meshes, the obtained master batch can be degraded in the natural environment, and therefore the environmental pollution is reduced.
b. And (3) impurity removal operation is carried out on the refined biological refined starch by adopting an impurity separation device, impurities are removed, and the production quality of the master batch at the later stage is improved.
c. And (3) heating and dehydrating the biologically refined starch after impurity removal, and measuring the moisture after 20-30 minutes, wherein the moisture is controlled to be below 0.5%.
d. The polyethylene resin is measured and then put into a cold mixing pot, mixed and stirred with the biological refined starch, and then sequentially added with the lubricant, the compatilizer, the coupling agent and the antioxidant.
e. And (4) putting the prepared materials into an automatic feeding device.
f. The discharge pipe of the automatic feeding device and the feed pipe of the double-screw extruder are vertically provided with rigid material conveying pipes, the first hose is hermetically connected between the material conveying pipes and the discharge pipe of the automatic feeding device, and the second hose is hermetically connected between the material conveying pipes and the feed pipe of the double-screw extruder, so that the discharge pipe of the automatic feeding device, the first hose, the material conveying pipes, the second hose and the feed pipe of the double-screw extruder are hermetically connected.
g. And (3) feeding the prepared materials into a double-screw extruder through an automatic feeding device, melting and blending the materials in the double-screw extruder, and extruding to form master batches.
h. Taking the first hose out of a discharge pipe of the automatic feeding device, simultaneously taking the second hose out of a feed pipe of the double-screw extruder, adjusting the material conveying pipes to be horizontal positions, enabling all the material conveying pipes to be located on the same horizontal plane, then connecting a water conveying pipe between the first hose and the second hose in a sealing mode, then connecting a water pipe to the second hose located on the outermost side, connecting the first hose located on the outermost side into a wastewater treatment device, introducing water into the water pipe, enabling the water to flow into the wastewater treatment device through the material conveying pipes, the first hose and the second hose, and removing residual materials in the material conveying pipes, the first hose and the second hose to complete cleaning of the material conveying pipes, the first hose and the second hose.
In the production technology, the region between automatic material conveying device and double screw extruder sets up rigid material conveying pipe, region between material conveying pipe and automatic material conveying device, region between material conveying pipe and double screw extruder sets up the hose, through the length that changes the hose, make material conveying pipe, the hose, sealing connection between automatic material conveying device and the double screw extruder, and material conveying pipe length is longer, make material transport stability good, can be through the automatic material conveying device with the material of joining in marriage evenly, send into the double screw extruder in succession, the efficiency of master batch production is improved. Moreover, the hose is conveniently separated from the automatic feeding device, the hose is separated from the double-screw extruder, the material conveying pipes are adjusted to be in a horizontal position, all the material conveying pipes are located on the same horizontal plane, then the hose and the material conveying pipes are communicated through the water conveying pipes, water can be supplied to all the hose and the material conveying pipes for cleaning, residual materials in the hose and the material conveying pipes are removed, and the accuracy of data of master batches produced next time is ensured.
Further, impurity separation device includes the operation panel, separation bucket and shell, the operation panel is equipped with the support frame, the first motor of fixedly connected with on the support frame, first motor fixed connection separation bucket, the separation bucket is equipped with the separation hole, the organism refines starch and can see through the separation hole, the separation bucket is equipped with the cavity, cavity and separation hole intercommunication, the separation bucket is located in the cavity of shell, impurity can't see through the separation hole, the outer end of separation bucket is equipped with the impurity discharge port, the impurity that can't see through in the separation bucket passes through the impurity discharge port and discharges, the operation panel is equipped with material collection mouth, the organism refines starch and drops in the material collection mouth after seeing through the separation hole, and discharge from material collection mouth, can dismantle in the impurity discharge port and be connected with the closing plate, the shell is equipped with the opening, the opening can be dismantled and be connected with the door plant.
The impurity removal operation specifically comprises the following steps:
(1) the biological refined starch is placed into a cavity of the separation barrel, the sealing plate is installed in an impurity discharge port at the outer end of the separation barrel, and the positioning column of the sealing plate is led into an installation hole of the separation barrel.
(2) The positioning block is arranged on the shell and provided with a positioning hole, the edge of the sealing plate is provided with a protruding part which is embedded into the positioning hole, and the door plate is arranged in the opening of the shell.
(3) Through first motor drive separation bucket rotation, the bellying location on the closing plate rotates in the locating hole, and the biology refines starch this moment and sees through the separation hole to in discharging into the mixer through the material collection mouth, the mixer heats the dehydration to the biology that the edulcoration is after refining starch.
(4) When the biological refined starch in the cavity of the separation barrel is discharged, the first motor is stopped, the door plate is taken out, the baffle is arranged in the shell, the baffle is arranged between the separation barrel and the material collecting opening, the positioning block is withdrawn from the shell, the positioning hole and the protruding part of the positioning block are separated, then the sealing plate is taken out, and then the impurities on the inner wall of the separation barrel are scraped to fall on the baffle to discharge the impurities.
Adopt the closing plate to seal the impurity discharge port for biological refining starch can only be discharged from the separation hole of separator vat, and impurity remains in the inside of separator vat, through rotating the separator vat, makes biological refining starch spread out in the inboard of separator vat, makes biological refining starch and impurity be in the motion state simultaneously, avoids the separation hole to be plugged up. When the biological refined starch in the cavity of the separation barrel is discharged, the baffle plate can be adopted to collect impurities, and the impurities can be prevented from falling into the material collecting port. The positioning column of the sealing plate is introduced into the mounting hole of the separation barrel, and the protruding part at the edge of the sealing plate is embedded into the positioning hole of the positioning block, so that the sealing plate and the separation barrel rotate simultaneously, and the sealing plate always seals the impurity discharge port at the outer end of the separation barrel, so that the sealing plate is prevented from falling off.
Furthermore, the shell is provided with a through hole, the positioning block penetrates through the through hole, a fixing bulge is fixed on the outer side of the shell, and when the bulge part is embedded into the positioning hole, the positioning block and the fixing bulge are fixedly connected through a bolt; when the bolt is screwed out, the positioning block can move in the through hole, so that the positioning hole and the protruding part of the positioning block are separated. Realized that the locating piece removes in the through-hole to can dismantle the connection on the shell, the connected node setting of locating piece and shell is in the outside of shell simultaneously, conveniently screws up or unscrews the bolt.
Further, the sectional area of the separation barrel is gradually increased from the first motor to the sealing plate, the separation barrel can be designed into a circular truncated cone shape, impurities can conveniently slide off, and the impurities on the inner wall of the separation barrel can be quickly scraped off.
Further, when the door plate is installed, the shell is provided with a sliding groove, the door plate is provided with a sliding lug, and the sliding lug horizontally moves in the sliding groove; when the baffle is installed, the baffle is provided with a connecting shaft, the connecting shaft slides into the sliding groove, and then the connecting shaft is rotated in the sliding groove, so that the baffle is obliquely arranged, then the locking piece is screwed in the connecting shaft, and the locking piece is locked on the shell. According to the demand of difference, the groove that slides of shell can be used to install door plant or installation baffle, can adjust the installation angle of baffle moreover for the baffle slope sets up, the discharge of the impurity of being convenient for.
Further, adopt rotating device to adjust material conveying pipe, rotating device includes second motor, rotor plate and limiting plate, and the rotor plate keeps vertical state fixed connection on the second motor, and the rotor plate is equipped with the recess, and material conveying pipe keeps vertical state spacing in the recess, and the rotor plate plays the effect of protection to material conveying pipe, and second motor drive rotor plate rotates simultaneously, just can make material conveying pipe rotate. The equal fixedly connected with limiting plate in both ends of rotor plate, the limiting plate is equipped with two spacing holes, the spacing hole of one of them limiting plate is passed at the both ends of first hose, the spacing hole of another limiting plate is passed at the both ends of second hose, through the first hose of pulling, the length of limiting plate is stretched out at the both ends that can change first hose, simultaneously through the second hose of pulling, the length of limiting plate is stretched out at the both ends that can change the second hose, the length variation of hose has been realized, make the material conveying pipe, the hose, sealing connection between automatic material conveying device and the double screw extruder.
Furthermore, the rotating plate is in threaded connection with a supporting piece, and the supporting piece extends into the groove; the outside of material conveyer pipe is equipped with the compact heap, rotor plate threaded connection has the fastener, the fastener stretches into in the recess, when material conveyer pipe is in the settlement position of recess, support piece supports material conveyer pipe, and compress tightly the compact heap through the fastener, fix a position material conveyer pipe in the settlement position of recess through support piece and fastener, avoid material conveyer pipe and the direct touching of recess inner wall and the structure is impaired, and can dismantle the connection in the recess with material conveyer pipe, be convenient for change material conveyer pipe.
Furthermore, the two ends of the first hose and the two ends of the second hose are both fixed with connectors, the connector thread of one end of the first hose is connected to a discharging pipe of the automatic feeding device, the connector thread of the other end of the first hose is connected to the material conveying pipe, the connector thread of one end of the second hose is connected to the material conveying pipe, and the connector thread of the other end of the second hose is connected to a feeding pipe of the double-screw extruder. The connector is a rigid structure, and force is conveniently applied to the connector, so that the hose, the automatic feeding device and the double-screw extruder are in sealing connection.
Further, the rotor plate is equipped with the T template, and the limiting plate is equipped with the connecting plate, and the T template passes through the bolt fastening between two connecting plates, can improve the bearing capacity of limiting plate, satisfies the hose in the spacing hole of limiting plate demand of length adjustment.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) the master batch obtained by the invention can be degraded in natural environment, thereby reducing environmental pollution.
(2) In the production technology, the region between automatic material conveying device and double screw extruder sets up rigid material conveying pipe, region between material conveying pipe and automatic material conveying device, region between material conveying pipe and double screw extruder sets up the hose, through the length that changes the hose, make material conveying pipe, the hose, sealing connection between automatic material conveying device and the double screw extruder, and material conveying pipe length is longer, make material transport stability good, can be through the automatic material conveying device with the material of joining in marriage evenly, send into the double screw extruder in succession, the efficiency of master batch production is improved. Moreover, the hose is conveniently separated from the automatic feeding device, the hose is separated from the double-screw extruder, the material conveying pipes are adjusted to be in a horizontal position, all the material conveying pipes are located on the same horizontal plane, then the hose and the material conveying pipes are communicated through the water conveying pipes, water can be supplied to all the hose and the material conveying pipes for cleaning, residual materials in the hose and the material conveying pipes are removed, and the accuracy of data of master batches produced next time is ensured.
(3) Adopt the closing plate to seal the impurity discharge port for biological refining starch can only be discharged from the separation hole of separator vat, and impurity remains in the inside of separator vat, through rotating the separator vat, makes biological refining starch spread out in the inboard of separator vat, makes biological refining starch and impurity be in the motion state simultaneously, avoids the separation hole to be plugged up. When the biological refined starch in the cavity of the separation barrel is discharged, the baffle plate can be adopted to collect impurities, and the impurities can be prevented from falling into the material collecting port. The positioning column of the sealing plate is introduced into the mounting hole of the separation barrel, and the protruding part at the edge of the sealing plate is embedded into the positioning hole of the positioning block, so that the sealing plate and the separation barrel rotate simultaneously, and the sealing plate always seals the impurity discharge port at the outer end of the separation barrel, so that the sealing plate is prevented from falling off.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the structure of an impurity separating apparatus according to the present invention;
FIG. 2 is a schematic structural view of the door panel taken out of the impurity separating device according to the present invention;
FIG. 3 is a schematic view of the connection between the console and the housing of the present invention;
FIG. 4 is a schematic view of a positioning block according to the present invention;
FIG. 5 is a schematic view of a door panel according to the present invention;
FIG. 6 is a schematic structural view of a separation barrel fixedly connected with a first motor according to the present invention;
FIG. 7 is a schematic view of the structure of the separation barrel of the present invention;
FIG. 8 is a schematic view of the structure of the sealing plate of the present invention;
FIG. 9 is a schematic view of the present invention in a state where foreign materials are discharged;
FIG. 10 is a schematic view of the construction of the baffle of the present invention;
FIG. 11 is a schematic diagram of the present invention in which the compounded material is fed into the twin-screw extruder by an automatic feeding device;
FIG. 12 is a schematic view of the structure of the material conveying pipe according to the present invention;
FIG. 13 is a schematic view of the construction of the connection of the pivotal plate and the fastening member in the present invention;
FIG. 14 is a schematic structural view of a fastener of the present invention;
FIG. 15 is a schematic view of the structure of the supporting member of the present invention;
FIG. 16 is a schematic structural view of the two ends of the first flexible pipe passing through the limiting holes of the limiting plate according to the present invention;
FIG. 17 is a schematic view of the present invention in a material transfer tube cleaning configuration.
In the figure, 1-automatic charging device; 2-a discharge pipe; 3-a twin screw extruder; 4-a feed pipe; 5-material conveying pipe; 61-a first hose; 62-a second hose; 7-a rotating plate; 8-a second motor; 9-a limiting plate; a 10-T shaped plate; 11-a connecting plate; 12-a connector; 13-a compression block; 14-a fastener; 15-a groove; 16-a support; 17-water conveying pipe; 18-a water pipe; 19-a wastewater treatment plant; 20-an operation table; 21-a support frame; 22-a first motor; 23-a housing; 24-a door panel; 25-a material collection port; 26-a separation barrel; 27-a separation well; 28-sealing plate; 29-a boss; 30-a cavity; 31-mounting holes; 32-a locating post; 33-a slip bump; 34-a cavity; 35-a positioning block; 36-positioning holes; 37-fixing the projection; 38-a glide groove; 39-a through hole; 40-a baffle plate; 41-a connecting shaft; 42-locking member.
Detailed Description
The invention discloses a bio-based degradable blown film master batch, which comprises the following components: the biological refined starch is prepared from potato and corn serving as raw materials and refined to 800-1200 meshes.
The production method of the bio-based degradable blown film master batch comprises the following steps:
a. the potato and the corn are used as raw materials to be refined to obtain biological refined starch, the biological refined starch is refined to 800-1200 meshes, the obtained master batch can be degraded in the natural environment, and therefore the environmental pollution is reduced.
b. And (3) impurity removal operation is carried out on the refined biological refined starch by adopting an impurity separation device, impurities are removed, and the production quality of the master batch at the later stage is improved.
As shown in fig. 1 to 10, the impurity separating device includes an operation table 20, a separating tub 26 and a housing 23, a sectional area of the separating tub 26 is gradually increased from the first motor 22 to the sealing plate 28, the separating tub 26 may be designed in a circular truncated cone shape to facilitate sliding of impurities, and the impurities on the inner wall of the separating tub 26 may be quickly scraped off. The operation panel 20 is equipped with support frame 21, and fixedly connected with first motor 22 on the support frame 21, first motor 22 fixed connection separation bucket 26, the connecting axle and the separation bucket 26 fixed connection of first motor 22 set up the supporting seat simultaneously on the support frame 21, and the connecting axle passes the supporting seat. Separating barrel 26 is equipped with separation hole 27, and biological thinning starch can see through separation hole 27, and separating barrel 26 is equipped with cavity 30, cavity 30 and separation hole 27 intercommunication, and separating barrel 26 is located in the cavity 34 of shell 23, and impurity can't see through separation hole 27, and separating barrel 26's outer end is equipped with the impurity discharge port, and the impurity that can't see through in the separating barrel 26 passes through the impurity discharge port and discharges. The operation panel 20 is provided with a material collecting opening 25, and the biologically refined starch falls into the material collecting opening 25 after penetrating through the separation hole 27 and is discharged from the material collecting opening 25. A sealing plate 28 is detachably connected in the impurity discharge port, an opening is formed in the shell 23, a door plate 24 is detachably connected to the opening, and a handle is fixedly connected to the outer side of the door plate 24.
The impurity removal operation specifically comprises the following steps:
(1) the biological refined starch is placed in a cavity 30 of the separation barrel 26, and the sealing plate 28 is arranged in the impurity discharge port at the outer end of the separation barrel 26, and at the moment, the positioning column 32 of the sealing plate 28 is led into the mounting hole 31 of the separation barrel 26.
(2) A positioning block 35 is mounted on the housing 23, the positioning block 35 is provided with a positioning hole 36, the edge of the sealing plate 28 is provided with a boss 29, the boss 29 is embedded into the positioning hole 36, and the door panel 24 is installed in the opening of the housing 23.
(3) The separation barrel 26 is driven to rotate by the first motor 22, and the boss 29 of the sealing plate 28 is positioned in the positioning hole 36 to rotate, and the biologically refined starch penetrates through the separation hole 27 and is discharged into the mixer through the material collection port 25.
(4) When the biologically refined starch in the cavity 30 of the separation barrel 26 is discharged, the first motor 22 is stopped, the door plate 24 is taken out, the baffle plate 40 is installed in the shell 23, the baffle plate 40 is arranged between the separation barrel 26 and the material collecting opening 25, the positioning block 35 is withdrawn from the shell 23, the positioning hole 36 and the protruding part 29 of the positioning block 35 are separated, then the sealing plate 28 is taken out, impurities on the inner wall of the separation barrel 26 are scraped onto the baffle plate 40, and the impurities are discharged.
Adopt the closing plate 28 to seal the impurity discharge port for biological refined starch can only be discharged from the separation hole 27 of separator vat 26, and impurity remains in the inside of separator vat 26, through rotating separator vat 26, makes biological refined starch spread in the inboard of separator vat 26, makes biological refined starch and impurity be in the motion state simultaneously, avoids separator hole 27 to be stopped up. When the biologically refined starch in the cavity 30 of the separation barrel 26 is discharged, the baffle 40 can be used to collect impurities, and simultaneously, the impurities can be prevented from falling into the material collecting port 25. The positioning column 32 of the sealing plate 28 of the invention is introduced into the mounting hole 31 of the separation barrel 26, and the projection 29 at the edge of the sealing plate 28 is embedded into the positioning hole 36 of the positioning block 35, so that the sealing plate 28 and the separation barrel 26 rotate simultaneously, and the sealing plate 28 always seals the impurity discharge port at the outer end of the separation barrel 26, thereby avoiding the falling-off of the sealing plate 28, and when the positioning block 35 is withdrawn, the sealing plate 28 and the separation barrel 26 are simply connected, therefore, the sealing plate 28 can be quickly taken out from the separation barrel 26, and the impurity removal operation is convenient.
The housing 23 is provided with a through hole 39, the positioning block 35 passes through the through hole 39, a fixing protrusion 37 is fixed on the outer side of the housing 23, and when the protruding portion 29 is inserted into the positioning hole 36, the positioning block 35 and the fixing protrusion 37 are fixedly connected by a bolt. When the bolt is unscrewed, the positioning block 35 can be moved in the through hole 39 so that the positioning hole 36 of the positioning block 35 and the boss 29 are disengaged. The positioning block 35 can move in the through hole 39 and can be detachably connected to the shell 23, and meanwhile, the connecting node of the positioning block 35 and the shell 23 is arranged on the outer side of the shell 23, so that bolts can be conveniently screwed or unscrewed.
When the door panel 24 is installed, the case 23 is provided with a sliding groove 38, and the door panel 24 is provided with a sliding protrusion 33, and the sliding protrusion 33 moves horizontally in the sliding groove 38. When the baffle 40 is installed, the baffle 40 is provided with a connecting shaft 41, the connecting shaft 41 slides into the sliding groove 38, then the connecting shaft 41 is rotated in the sliding groove 38, so that the baffle 40 is obliquely arranged, then a locking piece 42 is screwed into the connecting shaft 41, and the locking piece 42 is locked on the shell 23. According to different requirements, the sliding groove 38 of the shell 23 can be used for installing the door panel 24 or installing the baffle 40, and the installation angle of the baffle 40 can be adjusted, so that the baffle 40 is obliquely arranged, and the impurities can be conveniently discharged.
c. The mixer can heat and dehydrate the biologically refined starch after impurity removal, and the water content is measured after 20 to 30 minutes and is controlled below 0.5 percent.
d. The polyethylene resin is measured and then put into a cold mixing pot, mixed and stirred with the biological refined starch, and then sequentially added with the lubricant, the compatilizer, the coupling agent and the antioxidant.
e. The prepared materials are put into an automatic feeding device 1.
f. As shown in fig. 11 to 17, a rigid material conveying pipe 5 is arranged at a vertical position of the discharging pipe 2 of the automatic feeding device 1 and the feeding pipe 4 of the twin-screw extruder 3, a first hose 61 is hermetically connected between the material conveying pipe 5 and the discharging pipe 2 of the automatic feeding device 1, and a second hose 62 is hermetically connected between the material conveying pipe 5 and the feeding pipe 4 of the twin-screw extruder 3, so that the discharging pipe 2 of the automatic feeding device 1, the first hose 61, the material conveying pipe 5, the second hose 62 and the feeding pipe 4 of the twin-screw extruder 3 are hermetically connected.
g. The prepared materials are sent into a double-screw extruder 3 through an automatic feeding device 1, and the materials are melted and blended in the double-screw extruder 3 and extruded to form master batches.
h. Taking the first hose 61 out of the discharge pipe 2 of the automatic feeding device 1, taking the second hose 62 out of the feed pipe 4 of the twin-screw extruder 3, adjusting the material conveying pipes 5 to a horizontal position, wherein all the material conveying pipes 5 are positioned on the same horizontal plane, then connecting the water conveying pipe 17 between the first hose 61 and the second hose 62 in a sealing way, connecting the water pipe 18 to the second hose 62 positioned at the outermost side, connecting the first hose 61 positioned at the outermost side into the wastewater treatment device 19, introducing water into the water pipe 18, leading the water to pass through the material conveying pipes 5, the first hose 61 and the second hose 62, then flowing into the wastewater treatment device 19, removing the residual materials in the material conveying pipes 5, the first hose 61 and the second hose 62, and finishing the cleaning of the conveying pipes 5, the first hose 61 and the second hose 62.
Adopt rotating device to adjust material conveying pipe 5, rotating device includes second motor 8, rotor plate 7 and limiting plate 9, rotor plate 7 keeps vertical state fixed connection on second motor 8, rotor plate 7 is equipped with recess 15, material conveying pipe 5 keeps vertical state spacing in recess 15, rotor plate 7 plays the effect of protection to material conveying pipe 5, second motor 8 drive rotor plate 7 rotates simultaneously, just can make material conveying pipe 5 rotate. The equal fixedly connected with limiting plate 9 in both ends of rotor plate 7, limiting plate 9 is equipped with two spacing holes, the spacing hole of one of them limiting plate 9 is passed at the both ends of first hose 61, the spacing hole of another limiting plate 9 is passed at the both ends of second hose 62, through the first hose 61 of pulling, the length that limiting plate 9 was stretched out at the both ends that can change first hose 61, simultaneously through pulling second hose 62, the length that limiting plate 9 was stretched out at the both ends that can change second hose 62, the length variation of hose has been realized, make material conveying pipe 5, the hose, sealing connection between automatic material conveying device 1 and the double screw extruder 3.
A support piece 16 is screwed in the threaded hole of the rotating plate 7, and the support piece 16 extends into the groove 15. The outside of material conveying pipe 5 is equipped with compact heap 13, rotor plate 7 threaded connection has fastener 14, fastener 14 stretches into in the recess 15, when material conveying pipe 5 is in the settlement position of recess 15, support piece 16 supports material conveying pipe 5, and compress tightly compact heap 13 through fastener 14, fix a position material conveying pipe 5 in the settlement position of recess 15 through support piece 16 and fastener 14, avoid material conveying pipe 5 and the direct touching of recess 15 inner wall and the structure is impaired, and can dismantle material conveying pipe 5 and connect in recess 15, be convenient for change material conveying pipe 5.
In the production technology, the region between the automatic feeding device 1 and the double-screw extruder 3 is provided with the rigid material conveying pipe 5, the region between the material conveying pipe 5 and the automatic feeding device 1, the region between the material conveying pipe 5 and the double-screw extruder 3 is provided with the hose, the length of the hose is changed, so that the material conveying pipe 5, the hose, the automatic feeding device 1 and the double-screw extruder 3 are in sealing connection, the length of the material conveying pipe 5 is longer, the material conveying stability is good, the prepared material can be uniformly and continuously conveyed into the double-screw extruder 3 through the automatic feeding device 1, and the master batch production efficiency is improved. Moreover, conveniently deviate from the hose from automatic material conveying device 1, deviate from the hose from twin-screw extruder 3, adjust material conveying pipe 5 to horizontal position again, all material conveying pipe 5 are in on the same horizontal plane, then adopt raceway 1817 to communicate hose and material conveying pipe 5, just can lead to water the washing to all hoses and material conveying pipe 5, clear away remaining material in hose and the material conveying pipe 5, ensure the data accuracy of the master batch of next production.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (10)
1. The bio-based degradable blown film master batch is characterized by comprising the following components: the biological refined starch is prepared from potato and corn serving as raw materials and refined to 800-1200 meshes.
2. The production method of the bio-based degradable blown film master batch is characterized by comprising the following steps:
a. carrying out thinning on potatoes and corns serving as raw materials to obtain biological thinned starch;
b. carrying out impurity removal operation on the refined biological refined starch by adopting an impurity separation device;
c. heating and dehydrating the biologically refined starch after impurity removal;
d. metering polyethylene resin, putting the polyethylene resin into a cold mixing pot, mixing and stirring the polyethylene resin and the biologically refined starch, and sequentially adding a lubricant, a compatilizer, a coupling agent and an antioxidant;
e. putting the prepared materials into an automatic feeding device;
f. a rigid material conveying pipe is arranged at the vertical position of a discharging pipe of the automatic feeding device and a feeding pipe of the double-screw extruder, a first hose is hermetically connected between the material conveying pipe and the discharging pipe of the automatic feeding device, and a second hose is hermetically connected between the material conveying pipe and the feeding pipe of the double-screw extruder, so that the discharging pipe of the automatic feeding device, the first hose, the material conveying pipe, the second hose and the feeding pipe of the double-screw extruder are hermetically connected;
g. feeding the prepared materials into a double-screw extruder through an automatic feeding device, melting and blending the materials in the double-screw extruder, and extruding to form master batches;
h. taking the first hose out of a discharge pipe of the automatic feeding device, simultaneously taking the second hose out of a feed pipe of the double-screw extruder, adjusting the material conveying pipes to be horizontal positions, enabling all the material conveying pipes to be located on the same horizontal plane, then connecting a water conveying pipe between the first hose and the second hose in a sealing mode, then connecting a water pipe to the second hose located on the outermost side, connecting the first hose located on the outermost side into a wastewater treatment device, introducing water into the water pipe, enabling the water to flow into the wastewater treatment device through the material conveying pipes, the first hose and the second hose, and removing residual materials in the material conveying pipes, the first hose and the second hose to complete cleaning of the material conveying pipes, the first hose and the second hose.
3. The production method of the bio-based degradable blown film masterbatch of claim 2, wherein: the impurity separation device comprises an operation platform, a separation barrel and a shell, the operation platform is provided with a support frame, the support frame is fixedly connected with a first motor which is fixedly connected with the separation barrel, the separation barrel is provided with a separation hole through which the biological refined starch can penetrate, the separation barrel is provided with a cavity, the cavity is communicated with the separation hole, the separation barrel is arranged in the cavity of the shell, impurities cannot penetrate through the separation hole, the outer end of the separation barrel is provided with an impurity discharge port, impurities which cannot penetrate through the separation barrel are discharged through the impurity discharge port, the operating platform is provided with a material collecting opening, the biologically refined starch falls into the material collecting opening after penetrating through the separation hole, the impurities are discharged from the material collecting port, a sealing plate is detachably connected in the impurities discharging port, the shell is provided with an opening, and the opening is detachably connected with a door plate;
the impurity removal operation specifically comprises the following steps:
(1) placing the biological refined starch into a cavity of a separation barrel, installing a sealing plate into an impurity discharge port at the outer end of the separation barrel, and introducing a positioning column of the sealing plate into an installation hole of the separation barrel;
(2) a positioning block is arranged on the shell, the positioning block is provided with a positioning hole, the edge of the sealing plate is provided with a protruding part, the protruding part is embedded into the positioning hole, and a door plate is arranged in an opening of the shell;
(3) the separation barrel is driven to rotate by the first motor, the protruding part on the sealing plate is positioned in the positioning hole to rotate, and at the moment, the biological refined starch penetrates through the separation hole and is discharged into the mixing machine through the material collecting port;
(4) when the biological refined starch in the cavity of the separation barrel is discharged, the first motor is stopped, the door plate is taken out, the baffle is arranged in the shell, the baffle is arranged between the separation barrel and the material collecting opening, the positioning block is withdrawn from the shell, the positioning hole and the protruding part of the positioning block are separated, then the sealing plate is taken out, and then the impurities on the inner wall of the separation barrel are scraped to fall on the baffle to discharge the impurities.
4. The production method of the bio-based degradable blown film masterbatch of claim 3, wherein: the shell is provided with a through hole, the positioning block penetrates through the through hole, a fixing bulge is fixed on the outer side of the shell, and when the bulge is embedded into the positioning hole, the positioning block and the fixing bulge are fixedly connected through a bolt; when the bolt is screwed out, the positioning block can move in the through hole, so that the positioning hole of the positioning block is separated from the boss.
5. The production method of the bio-based degradable blown film masterbatch of claim 3, wherein: the sectional area of the separation tub gradually increases from the first motor to the sealing plate.
6. The production method of the bio-based degradable blown film masterbatch of claim 3, wherein: when the door plate is installed, the shell is provided with a sliding groove, the door plate is provided with a sliding lug, and the sliding lug horizontally moves in the sliding groove; when the baffle is installed, the baffle is provided with a connecting shaft, the connecting shaft slides into the sliding groove, then the connecting shaft rotates in the sliding groove, the baffle is obliquely arranged, then a locking piece is screwed into the connecting shaft, and the locking piece is locked on the shell.
7. The production method of the bio-based degradable blown film masterbatch of claim 2, wherein: adopt rotating device right material conveying pipe adjusts, rotating device includes second motor, rotor plate and limiting plate, the rotor plate keeps vertical state fixed connection in on the second motor, the rotor plate is equipped with the recess, material conveying pipe keeps vertical state spacing in the recess, the equal fixedly connected with in both ends of rotor plate the limiting plate, the limiting plate is equipped with two spacing holes, one of them is passed at the both ends of first hose the spacing hole of limiting plate, another is passed at the both ends of second hose the spacing hole of limiting plate.
8. The production method of the bio-based degradable blown film masterbatch of claim 7, wherein: the rotating plate is in threaded connection with a supporting piece, and the supporting piece extends into the groove; the outer side of the material conveying pipe is provided with a pressing block, the rotating plate is in threaded connection with a fastener, the fastener extends into the groove, and when the material conveying pipe is located at the set position of the groove, the support piece supports the material conveying pipe and presses the pressing block through the fastener.
9. The production method of the bio-based degradable blown film masterbatch of claim 7, wherein: the both ends of first hose with the both ends of second hose all are fixed with the connector, the connector threaded connection of first hose one end is in on automatic material conveying device's the discharging pipe, the connector threaded connection of the first hose other end is in on the material conveying pipe, the connector threaded connection of second hose one end is in on the material conveying pipe, the connector threaded connection of the second hose other end is in on the inlet pipe of twin-screw extruder.
10. The production method of the bio-based degradable blown film masterbatch of claim 7, wherein: the rotating plate is provided with a T-shaped plate, the limiting plate is provided with a connecting plate, and the T-shaped plate is fixed between the two connecting plates through bolts.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431576A (en) * | 2022-09-02 | 2022-12-06 | 浙江峰峰管业有限公司 | PE pipe steel skeleton coating equipment and process |
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| CN114106444B (en) | 2023-04-25 |
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