CN113399143B - Granulation external lubricant adding system and method - Google Patents
Granulation external lubricant adding system and method Download PDFInfo
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- CN113399143B CN113399143B CN202110671976.1A CN202110671976A CN113399143B CN 113399143 B CN113399143 B CN 113399143B CN 202110671976 A CN202110671976 A CN 202110671976A CN 113399143 B CN113399143 B CN 113399143B
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- liquid
- lubricant
- storage tank
- external lubricant
- external
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/025—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the objects or work being present in bulk
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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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
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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
- B29B9/16—Auxiliary treatment of granules
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
Abstract
The invention relates to an external granulating lubricant adding system, and belongs to the field of resin synthesis. The system comprises: the liquid storage tank is used for storing a liquid external lubricant and is connected with a mineral oil storage tank through a mineral oil pump; the liquid level meter is used for monitoring the liquid level in the liquid storage tank and is arranged on the liquid storage tank; the pipeline is communicated with the liquid storage tank and the aggregate air conveying pipe; the metering pump is used for quantitatively pumping the liquid lubricant and is arranged on the pipeline; the electrical control cabinet is used for controlling the system and communicating the liquid level meter and the metering pump. The invention also provides a method for adding the external granulating lubricant, which is applied to the system. The invention adopts the liquid lubricant to replace the powdery lubricant, improves the appearance of product particles, reduces the production cost and improves the processing efficiency of products; meanwhile, the dust pollution is reduced, which is beneficial to environmental protection and emission reduction. The system provided by the invention has the advantages of compact structure, small occupied area and easiness in installation.
Description
Technical Field
The invention relates to the field of resin synthesis, in particular to a granulating external lubricant adding system and a method.
Background
The polymer such as synthetic resin generally has a high viscosity after melting, and during the processing, when the melted polymer is granulated through a narrow slit, a sprue, and the like, the polymer melt must generate friction with the surface of a processing machine, some friction is very unfavorable for the processing of the polymer, the friction reduces the fluidity of the melt, and the severe friction causes the surface of a film to be rough, lack gloss or generate flow marks. For this reason, it is necessary to add an auxiliary agent for the purpose of improving lubricity, reducing friction, and reducing interfacial adhesion properties. The lubricant can be divided into an external lubricant and an internal lubricant, wherein the external lubricant mainly improves the friction between the polymer melt and the hot metal surface of processing equipment, has poor compatibility with the polymer and is easy to migrate from the melt to the outside, so that a lubricating thin layer can be formed on the interface between the plastic melt and the metal; the internal lubricant has good compatibility with the polymer, and plays a role in reducing the cohesion among polymer molecules in the polymer, thereby improving the internal friction heat of the plastic melt and the fluidity of the melt. Lubricants are classified into solid (powder) lubricants and liquid lubricants, and in general, the lubricants have both internal and external lubrication functions, and the lubricants are mainly used for external lubrication and internal lubrication, and the liquid lubricants are often used as internal lubricants.
Present outer wetting agent scheme of adding is mostly the powdery outer wetting agent and adds the material after the granulation through the screw rod charging means, generally adopt uncovered interpolation, powdery lubricant generally adopts 25 KG's bag packing, need add to open lubricant hopper after the manual bale breaking, the powdery outer wetting agent utilizes self gravity unloading, extrude through the screw rod and get into the granulation silo, with the polymer aggregate through rotary valve or venturi sprayer access tuber pipe together, with the plastic pellet homogeneous mixing of area pressure flight in the wind pipeline, and carry the finished product storehouse through the tuber pipe and pack. The powdery external wetting agent has the following problems of small density, small granularity and poor adhesive force:
1. the product quality problem is as follows: firstly, the powdery external lubricant is scattered and lost due to the addition of the ring joint, and the actual addition amount is less than the formula amount; in the second step, in the packaging step, some external wetting agents in the granules fed to the packaging machine from the initial storage bin fall off and accumulate under the dual actions of gravity and friction between the granules due to poor adhesive force, so that the materials in the initial packaging contain too many external wetting agents, and the addition amount of the subsequent normal packaging is small. The lubricating effect is affected by the addition amount of the external wetting agent. In addition, the surface of the powder external lubricant attached particles influences the appearance of the product, so that a user can misunderstand the powder external lubricant as the powder of the product in the bag-opening use process, and misunderstand the powder external lubricant as poor transparency for the Mingbenzene product;
2. Environmental problems: firstly, in the feeding link, part of the powdery external wetting agent can be dispersed into the atmosphere of a workshop, and secondly, part of the powdery external wetting agent can be taken away in the process of removing powder by a dust removal device before the material enters a storage bin, so that the powdery external wetting agent can harm the surrounding environment and operators;
3. the cost is increased: the above-mentioned processes of charging and dust-removing can result in the scattering loss of powdered external moistening agent, and the powdered external moistening agent is fine chemical product, and its cost is raised.
Therefore, if the liquid lubricant is used as the external lubricant, the uniformity of the liquid coating resin particles can be utilized to effectively improve the friction between the particles and the melt during processing and the metal surface of processing equipment, particularly improve the conveying in a screw feeding section, and improve the processing efficiency.
Disclosure of Invention
The invention aims to solve the technical problems and provides an external granulating lubricant adding system.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps:
an extra-prilling lubricant addition system, the system comprising: the liquid storage tank is used for storing a liquid external lubricant and is connected with a mineral oil storage tank through a mineral oil pump; the liquid level meter is used for monitoring the liquid level in the liquid storage tank and is arranged on the liquid storage tank; the pipeline is communicated with the liquid storage tank and the aggregate air conveying pipe; the metering pump is used for quantitatively pumping the liquid lubricant and is arranged on the pipeline; the electrical control cabinet is used for controlling the system and communicating the liquid level meter and the metering pump.
Preferably, one end of the pipeline connected with the air delivery pipe is also provided with a spray head for atomizing the lubricant outside the liquid.
Preferably, the liquid external lubricant comprises a hydrocarbon lubricant.
The liquid lubricant is used as an external lubricant, the addition amount is hundreds of ppm, the internal part and the product quality are not affected, and the fluidity of the product can be improved.
A method for adding external granulating lubricant is applied to the external granulating lubricant adding system and comprises the following steps:
s1, pumping mineral oil in a mineral oil storage tank to a liquid storage tank through a mineral oil pump;
s2, quantitatively pumping the liquid external lubricant in the liquid storage tank through a metering pump according to a set formula amount, enabling the liquid external lubricant to enter a material particle pneumatic conveying pipe in a jet shape through a nozzle, uniformly mixing the liquid external lubricant with plastic particles flying under pressure in a pneumatic conveying process, attaching the mixture to the surface of the material particles, and conveying the mixture to a finished product bin through an air pipe for packaging.
The pumping process of the step S1 can be controlled by a central control center in a remote interlocking way without manual operation.
The technical scheme provided by the invention has the following advantages:
the adding system provided by the invention has the advantages that the liquid storage tank, the liquid level meter, the metering pump, the pipeline, the electric control cabinet and other parts are all arranged on the same steel base seat to form a module, the integral combination of the storage, metering and adding functions of the liquid external lubricant is realized, and the adding system has the characteristics of compact structure, small occupied area, easiness in installation and the like.
The adding method provided by the invention has the advantages that the liquid lubricant is added into the resin granulation process, the whole process is automatically operated, and the manual operation is not needed. The liquid lubricant has strong adhesive force, can effectively ensure the stable addition of the lubricant and improve the processing improvement of products; the liquid lubricant is colorless transparent liquid, does not affect the transparency of the product, does not generate the powdery feeling on the surface of the material particles, and effectively improves the appearance of the product; the problems of material loss and environmental pollution caused by easy flying of the powdery external lubricant can be avoided; the hydrocarbon liquid lubricant with good compatibility with materials is adopted, the price of the lubricant is lower than that of the common wax powder lubricant, an internal lubricant does not need to be added in the production process, and the production cost of the product is effectively reduced on the premise of ensuring the product quality. The addition amount of the liquid external wetting agent can be controlled by adjusting the metering pump in the addition process, so that the production stability is improved.
Drawings
FIG. 1 is a schematic diagram of an apparatus for a pelletizing external lubricant addition system provided by the present invention;
wherein, 1, a liquid storage tank; 2. a liquid level meter; 3. a metering pump; 4. a spray head; 5. a mineral oil storage tank; 6. a mineral oil pump; 7. and (6) conveying the pipes by wind.
Detailed Description
The external lubricant addition system for granulation of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the system comprises: the liquid storage tank 1 is used for storing a liquid external lubricant and is connected with a mineral oil storage tank 5 through a mineral oil pump 6; the liquid level meter 2 is used for monitoring the liquid level in the liquid storage tank 1 and is arranged on the liquid storage tank 1; the pipeline is communicated with the liquid storage tank 1 and the aggregate air conveying pipe 7; the metering pump 3 is used for quantitatively pumping the liquid lubricant and is arranged on the pipeline; the electrical control cabinet is used for controlling the system and is communicated with the liquid level meter 2 and the metering pump 3.
Preferably, one end of the pipeline connecting with the air delivery pipe 7 is also provided with a spray head 4 for atomizing the liquid external lubricant so that the external lubricant can be uniformly attached to the surfaces of the material particles.
Preferably, the liquid external lubricant comprises a hydrocarbon lubricant.
A method for adding external granulating lubricant is applied to the external granulating lubricant adding system and comprises the following steps:
s1, pumping mineral oil in a mineral oil storage tank 5 to a liquid storage tank 1 through a mineral oil pump 6;
s2, quantitatively pumping the liquid external lubricant in the liquid storage tank 1 through a metering pump 3 according to a set formula amount, feeding the liquid external lubricant into a material particle pneumatic conveying pipe 7 in a spraying shape through a spray head 4, uniformly mixing the liquid external lubricant with plastic particles flying under pressure in a pneumatic conveying process, attaching the mixture to the surface of the material particles, and conveying the mixture to a finished product bin through an air pipe for packaging.
The pumping process of step S1 can be controlled by a central control center in a remote interlocking manner without manual operation.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (3)
1. An external lubricant pelletizing addition system, characterized in that the system comprises: the liquid storage tank is used for storing a liquid external lubricant, the liquid external lubricant comprises a hydrocarbon lubricant and is connected with a mineral oil storage tank through a mineral oil pump; the liquid level meter is used for monitoring the liquid level in the liquid storage tank and is arranged on the liquid storage tank; the pipeline is communicated with the liquid storage tank and the aggregate air conveying pipe; the metering pump is used for quantitatively pumping the liquid lubricant and is arranged on the pipeline; the electrical control cabinet is used for controlling the system and communicating the liquid level meter and the metering pump.
2. The system for adding the external lubricant for granulation as set forth in claim 1, wherein the pipe connecting with the air delivery pipe is further provided at one end with a spray nozzle for atomizing the external lubricant for granulation.
3. A method for adding an external lubricant for granulation, which is applied to the external lubricant addition system for granulation according to any one of claims 1 to 2, comprising the steps of:
s1, pumping mineral oil in a mineral oil storage tank to a liquid storage tank through a mineral oil pump;
s2, quantitatively pumping the liquid external lubricant in the liquid storage tank through a metering pump according to a set formula amount, enabling the liquid external lubricant to enter a material particle pneumatic conveying pipe in a jet shape through a spray head, uniformly mixing the liquid external lubricant with plastic particles flying under pressure in a pneumatic conveying process, attaching the mixture to the surface of the material particles, and conveying the material particles to a finished product bin through an air pipe for packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671976.1A CN113399143B (en) | 2021-06-17 | 2021-06-17 | Granulation external lubricant adding system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671976.1A CN113399143B (en) | 2021-06-17 | 2021-06-17 | Granulation external lubricant adding system and method |
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| Publication Number | Publication Date |
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| CN113399143A CN113399143A (en) | 2021-09-17 |
| CN113399143B true CN113399143B (en) | 2022-07-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4698867B2 (en) * | 2001-03-29 | 2011-06-08 | 日立金属株式会社 | Method for producing granulated powder of R-Fe-B alloy and method for producing sintered R-Fe-B alloy |
| EP2671633A1 (en) * | 2012-06-06 | 2013-12-11 | Basf Se | Method for transporting foamed thermoplastic polymer particles |
| CN104530736B (en) * | 2014-12-25 | 2016-10-05 | 南京聚锋新材料有限公司 | The preparation facilities of a kind of Wood plastic composite and technique |
| CN207857187U (en) * | 2018-01-12 | 2018-09-14 | 安徽省纽斯康生物工程有限公司 | A kind of lubricating fluid automatic spraying device based on high efficiency wet granulator |
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