CN110713607A - Method for extracting natural rubber from rubber leaves - Google Patents
Method for extracting natural rubber from rubber leaves Download PDFInfo
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- CN110713607A CN110713607A CN201911187568.8A CN201911187568A CN110713607A CN 110713607 A CN110713607 A CN 110713607A CN 201911187568 A CN201911187568 A CN 201911187568A CN 110713607 A CN110713607 A CN 110713607A
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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
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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
- C08J2307/00—Characterised by the use of natural rubber
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Extraction Or Liquid Replacement (AREA)
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Abstract
The invention relates to the technical field of natural rubber extraction, and discloses a method for extracting natural rubber from rubber leaves, which comprises the following steps: s1 raw material collection: when the new branches of the rubber trees grow to 3-6 fluffy leaves, the new branches are cut off from the trunk through an electric saw, after the leaves are cut, the cuts of the trunk are wrapped through non-woven fabrics, and the loss of latex at the cuts is reduced; s2 cleaning: the leaves on the new branches in the S1 are cleaned, the leaves are guaranteed not to be broken in the cleaning process, then the leaves are cut from the new branches through the blades, and the leaves of different types and sizes are classified and collected. According to the method, the natural rubber can be directly extracted from the rubber leaves through the processes of collecting raw materials, cleaning, crushing leaves, centrifuging and the like, so that the traditional preparation process is simplified, the working strength of workers can be reduced, and meanwhile, the method is relatively low in manufacturing cost and has a wide market popularization prospect.
Description
Technical Field
The invention relates to the technical field of natural rubber extraction, in particular to a method for extracting natural rubber from rubber leaves.
Background
Natural rubber is a natural polymer compound containing polyisoprene as a main component, has a molecular formula of (C5H8) n, and 91% to 94% of the components thereof are rubber hydrocarbon (polyisoprene), and the balance is non-rubber substances such as protein, fatty acid, ash, and saccharide, and natural rubber is a widely used rubber, and is generally called natural rubber, which is an elastic solid obtained by processing natural latex collected from brazilian rubber trees through coagulation, drying, and the like, and contains rubber hydrocarbon (polyisoprene) in an amount of 90% or more and a small amount of protein, fatty acid, sugar, ash, and the like.
However, most of the existing methods for obtaining natural rubber from rubber leaves still rely on manual operation, so that the preparation efficiency is slow, a large amount of manpower and material resources are consumed, and meanwhile, the preparation process is complicated and cannot meet the market requirements. Accordingly, one skilled in the art provides a method for extracting natural rubber from rubber leaves to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention aims at providing a method for extracting natural rubber from rubber leaves to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for extracting natural rubber from rubber leaves comprises the following steps:
s1 raw material collection: when the new branches of the rubber trees grow to 3-6 fluffy leaves, the new branches are cut off from the trunk through an electric saw, after the leaves are cut, the cuts of the trunk are wrapped through non-woven fabrics, and the loss of latex at the cuts is reduced; s2 cleaning: cleaning the leaves on the new branches in the S1, ensuring that the leaves are not broken in the cleaning process, then cutting the leaves from the new branches by a blade, and classifying and collecting the leaves of different types and sizes; s3 leaf crushing: putting the same type of leaves in the S1 into a crusher for crushing, then pouring crushed materials and an alkaline buffer solution into a mixer together for mixing, standing for 10 hours, carrying out solid-liquid separation on the mixture through a metal filter screen, collecting the separated liquid to obtain slurry, wherein the mixing time is 5-10 min, and the barrel of the mixer is a drum-type barrel for mixing;
s4 centrifugation: and pouring the slurry in the step S2 into a centrifuge for centrifugal treatment, washing and drying the centrifuged top-layer suspended rubber impurities to obtain the rubber, wherein the outer diameter of a cylinder of the centrifuge is 880mm, the inner diameter of the cylinder is 800mm, and the inner diameter and the outer diameter of the cylinder are both made of stainless steel.
As a still further scheme of the invention: the rated voltage of the electric saw in the S1 is 220-240V, the input power is 600W, the electric saw adopts a reciprocating design, the reciprocating stroke is 13mm, and the no-load rotating speed is 0-3500 PRM.
As a still further scheme of the invention: and cutting the leaves in the S2 is carried out in the weather with the air temperature of 35-40 ℃, so that the loss of latex at the cut parts of the leaves is reduced.
As a still further scheme of the invention: the alkaline buffer solution in the S3 is a phosphate buffer solution with the concentration of 0.1%, the ph value is 12, and the material-liquid ratio of the mixed solution in the mixer is 0.8:3.2 kg/L.
As a still further scheme of the invention: the rotating speed of the centrifugal machine in the S4 is 1000-6500 r/min, and the centrifugal time is 10 min.
As a still further scheme of the invention: in the step S3, after the mixture is subjected to solid-liquid separation by the metal filter screen, the mixture is further subjected to solid-liquid separation by a pressing plate driven by the cylinder above the metal filter screen, so as to reduce the slurry component remaining in the residue.
As a still further scheme of the invention: should select the gondola water faucet of 0.25Mpa hydraulic to wash the leaf in the S2 washs, still should hold the leaf part and clean the two sides of leaf through the brush during washing, reduces impurity.
Compared with the prior art, the invention has the beneficial effects that: according to the method, the natural rubber can be directly extracted from the rubber leaves through the processes of collecting raw materials, cleaning, crushing leaves, centrifuging and the like, so that the traditional preparation process is simplified, the working strength of workers can be reduced, meanwhile, the method is low in manufacturing cost and high in mechanization degree, the preparation efficiency of the natural rubber is greatly improved, and the method has a wide market popularization prospect.
Detailed Description
In embodiment 1 of the present invention, a method for extracting natural rubber from rubber leaves comprises the following steps:
s1 raw material collection: when the new branches of the rubber trees grow to 3-6 fluffy leaves, the new branches are cut off from the trunk through an electric saw, after the leaves are cut, the cuts of the trunk are wrapped through non-woven fabrics, and the loss of latex at the cuts is reduced; s2 cleaning: cleaning the leaves on the new branches in the S1, ensuring that the leaves are not broken in the cleaning process, then cutting the leaves from the new branches by a blade, and classifying and collecting the leaves of different types and sizes; s3 leaf crushing: putting the same type of leaves in the S1 into a crusher for crushing, then pouring crushed materials and an alkaline buffer solution into a mixer together for mixing, standing for 10 hours, carrying out solid-liquid separation on the mixture through a metal filter screen, collecting the separated liquid to obtain slurry, wherein the mixing time is 5-10 min, and the barrel of the mixer is a drum-type barrel for mixing;
s4 centrifugation: and pouring the slurry in the step S2 into a centrifuge for centrifugal treatment, washing and drying the centrifuged top-layer suspended rubber impurities to obtain the rubber, wherein the outer diameter of a cylinder of the centrifuge is 880mm, the inner diameter of the cylinder is 800mm, and the inner diameter and the outer diameter of the cylinder are both made of stainless steel.
Preferably: the rated voltage of the electric saw in the S1 is 220-240V, the input power is 600W, the electric saw adopts a reciprocating design, the reciprocating stroke is 13mm, and the no-load rotating speed is 0-3500 PRM.
Preferably: the leaves are cut in the S2 process under the weather of the temperature of 35-40 ℃, so that the loss of latex at the cut positions of the leaves is reduced.
Preferably: the alkaline buffer solution in the S3 is phosphate buffer solution with the concentration of 0.1%, the ph value is 12, and the material-liquid ratio of the mixed solution in the mixer is 0.8:3.2 kg/L.
Preferably: and in the S4, the rotating speed of the centrifugal machine is 1000-6500 r/min, and the centrifugal time is 10 min.
Preferably: in S3, after the mixture is subjected to solid-liquid separation by the metal filter screen, the mixture is further subjected to solid-liquid separation by a mode that a pressing plate is driven by an air cylinder to press the mixture above the metal filter screen, so that the residual slurry component in the residue is reduced.
Preferably: s2 should select the hydraulic gondola water faucet of 0.25Mpa to wash the leaf in wasing, still should hold the leaf part and clean the two sides of leaf through the brush during washing, reduce impurity.
In embodiment 2 of the present invention, a method for extracting natural rubber from rubber leaves comprises the following steps:
s1 raw material collection: when the new branches of the rubber trees grow to 3-6 fluffy leaves, the new branches are cut off from the trunk through an electric saw, after the leaves are cut, the cuts of the trunk are wrapped through non-woven fabrics, and the loss of latex at the cuts is reduced; s2 cleaning: then, cutting leaves from the new branches by a blade, classifying and collecting the leaves of different types and sizes, sealing and wrapping the cut parts of the cut leaves by using a film, and then cleaning, wherein the leaves are ensured not to be broken in the cleaning process;
s3 leaf crushing: putting the same type of leaves in the S1 into a crusher for crushing, then pouring crushed materials and an alkaline buffer solution into a mixer together for mixing, standing for 10 hours, carrying out solid-liquid separation on the mixture through a metal filter screen, collecting the separated liquid to obtain slurry, wherein the mixing time is 5-10 min, and the barrel of the mixer is a drum-type barrel for mixing;
s4 centrifugation: and pouring the slurry in the step S2 into a centrifuge for centrifugal treatment, washing and drying the centrifuged top-layer suspended rubber impurities to obtain the rubber, wherein the outer diameter of a cylinder of the centrifuge is 880mm, the inner diameter of the cylinder is 800mm, and the inner diameter and the outer diameter of the cylinder are both made of stainless steel.
Preferably: the rated voltage of the electric saw in the S1 is 220-240V, the input power is 600W, the electric saw adopts a reciprocating design, the reciprocating stroke is 13mm, and the no-load rotating speed is 0-3500 PRM.
Preferably: the leaves are cut in the S2 process under the weather of the temperature of 35-40 ℃, so that the loss of latex at the cut positions of the leaves is reduced.
Preferably: the alkaline buffer solution in the S3 is phosphate buffer solution with the concentration of 0.1%, the ph value is 12, and the material-liquid ratio of the mixed solution in the mixer is 0.8:3.2 kg/L.
Preferably: and in the S4, the rotating speed of the centrifugal machine is 1000-6500 r/min, and the centrifugal time is 10 min.
Preferably: in S3, after the mixture is subjected to solid-liquid separation by the metal filter screen, the mixture is further subjected to solid-liquid separation by a mode that a pressing plate is driven by an air cylinder to press the mixture above the metal filter screen, so that the residual slurry component in the residue is reduced.
Preferably: s2 should select the hydraulic gondola water faucet of 0.25Mpa to wash the leaf in wasing, still should hold the leaf part and clean the two sides of leaf through the brush during washing, reduce impurity.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (7)
1. A method for extracting natural rubber from rubber leaves is characterized by comprising the following steps:
s1 raw material collection: when the new branches of the rubber trees grow to 3-6 fluffy leaves, the new branches are cut off from the trunk through an electric saw, after the leaves are cut, the cuts of the trunk are wrapped through non-woven fabrics, and the loss of latex at the cuts is reduced;
s2 cleaning: cleaning the leaves on the new branches in the S1, ensuring that the leaves are not broken in the cleaning process, then cutting the leaves from the new branches by a blade, and classifying and collecting the leaves of different types and sizes;
s3 leaf crushing: putting the same type of leaves in the S1 into a crusher for crushing, then pouring crushed materials and an alkaline buffer solution into a mixer together for mixing, standing for 10 hours, carrying out solid-liquid separation on the mixture through a metal filter screen, collecting the separated liquid to obtain slurry, wherein the mixing time is 5-10 min, and the barrel of the mixer is a drum-type barrel for mixing;
s4 centrifugation: and pouring the slurry in the step S2 into a centrifuge for centrifugal treatment, washing and drying the centrifuged top-layer suspended rubber impurities to obtain the rubber, wherein the outer diameter of a cylinder of the centrifuge is 880mm, the inner diameter of the cylinder is 800mm, and the inner diameter and the outer diameter of the cylinder are both made of stainless steel.
2. The method for extracting natural rubber from rubber tree leaves as claimed in claim 1, wherein the rated voltage of the electric saw in S1 is 220-240V, the input power is 600W, the electric saw adopts reciprocating design, the reciprocating stroke is 13mm, and the no-load rotation speed is 0-3500 PRM.
3. The method for extracting natural rubber from rubber leaves as claimed in claim 1, wherein the cutting of the leaves in S2 is performed in a weather with an air temperature of 35-40 ℃ so as to reduce the loss of latex at the cut of the leaves.
4. The method for extracting natural rubber from rubber leaves as claimed in claim 1, wherein the alkaline buffer solution in S3 is 0.1% phosphate buffer solution, and has a ph value of 12, wherein the mixture solution ratio in the mixer is 0.8:3.2 kg/L.
5. The method for extracting natural rubber from rubber leaves as claimed in claim 1, wherein the rotation speed of the centrifuge in S4 is 1000-6500 r/min, and the centrifugation time is 10 min.
6. The method of claim 1, wherein the mixture is subjected to solid-liquid separation by a metal screen in step S3, and then further solid-liquid separation is performed on the mixture by pressing a pressing plate with an air cylinder above the metal screen, so as to reduce the residual slurry component in the residue.
7. The method as claimed in claim 1, wherein the cleaning at S2 is performed by cleaning the leaves with a sprinkler under 0.25Mpa, and the cleaning is performed by holding the leaves and cleaning both sides of the leaves with a brush to reduce impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187568.8A CN110713607A (en) | 2019-11-28 | 2019-11-28 | Method for extracting natural rubber from rubber leaves |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911187568.8A CN110713607A (en) | 2019-11-28 | 2019-11-28 | Method for extracting natural rubber from rubber leaves |
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| CN110713607A true CN110713607A (en) | 2020-01-21 |
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| CN201911187568.8A Pending CN110713607A (en) | 2019-11-28 | 2019-11-28 | Method for extracting natural rubber from rubber leaves |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325297A (en) * | 2017-08-24 | 2017-11-07 | 中国热带农业科学院橡胶研究所 | A kind of method that natural rubber is directly extracted from paragutta tree branches and leaves |
| CN107722297A (en) * | 2017-11-18 | 2018-02-23 | 桂林全州燎原科技有限责任公司 | A kind of extracting method of natural rubber |
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- 2019-11-28 CN CN201911187568.8A patent/CN110713607A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325297A (en) * | 2017-08-24 | 2017-11-07 | 中国热带农业科学院橡胶研究所 | A kind of method that natural rubber is directly extracted from paragutta tree branches and leaves |
| CN107722297A (en) * | 2017-11-18 | 2018-02-23 | 桂林全州燎原科技有限责任公司 | A kind of extracting method of natural rubber |
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Application publication date: 20200121 |
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