阅读说明：本技术 一种生漆分级过滤方法 (Raw lacquer grading filtration method ) 是由 任卓萌 于 2019-10-30 设计创作，主要内容包括：本发明提供的一种生漆分级过滤方法,通过使用袋式过滤设备,对生漆进行5级过滤,第一级60目过滤,第二级150目过滤,第三级300目过滤,第四级600目过滤,第五级1250目过滤,可以使生漆的过滤精度达到1250目,生漆漆液内的杂质控制在10微米以下,极大的提高了生漆的性能和附着力,且袋式过滤设备有清洗简便,劳动强度低,过滤量大,使生漆的过滤效果达到国际一流水平。(According to the raw lacquer grading filtration method provided by the invention, 5-grade filtration is carried out on raw lacquer by using bag type filtration equipment, the first-grade 60-mesh filtration, the second-grade 150-mesh filtration, the third-grade 300-mesh filtration, the fourth-grade 600-mesh filtration and the fifth-grade 1250-mesh filtration can ensure that the filtration precision of the raw lacquer reaches 1250 meshes, impurities in raw lacquer liquid are controlled below 10 microns, the performance and the adhesive force of the raw lacquer are greatly improved, and the bag type filtration equipment is simple and convenient to clean, low in labor intensity and large in filtration capacity, so that the filtration effect of the raw lacquer reaches the international first-class level.)

1. A raw lacquer grading filtration method is characterized in that: the filtration method comprises the following steps:

(1) first-stage filtration: performing primary filtration on raw lacquer by using a bag filter, wherein the precision of a filter bag is 60 meshes;

(2) and (3) second-stage filtration: performing secondary filtration on the raw lacquer subjected to the primary filtration by using a bag filter, wherein the precision of a filter bag is 150 meshes;

(3) and (3) third-stage filtration: performing third-stage filtration on the raw lacquer subjected to the second-stage filtration by using a bag filter, wherein the precision of a filter bag is 300 meshes;

(4) fourth stage filtration: performing fourth-stage filtration on the raw lacquer subjected to the third-stage filtration by using a bag filter, wherein the precision of a filter bag is 600 meshes;

(5) and (3) fifth-stage filtration: and (4) carrying out fifth-stage filtration on the raw lacquer subjected to the fourth-stage filtration by using a bag filter, wherein the precision of a filter bag is 150 meshes.

2. The raw lacquer classifying filtration method according to claim 1, characterized in that: the filtering pressure of the bag filter is less than or equal to 0.2 MPa.

Technical Field

The invention relates to the field of paint preparation, in particular to a raw lacquer grading and filtering method.

Background

The raw lacquer is a natural product, impurities such as bark, leaves, dust and the like are inevitably generated in the picking and cutting process, and if the impurities are not filtered out, the spraying and painting effects of the paint are seriously influenced, so that the surface of the sprayed or painted paint has granular feel and unevenness.

The fine filtration of raw lacquer is always an industrial problem, in China, the traditional filtration mode is generally manual filtration by using a filter cloth and a twisting frame, and the filtration method has extremely low filtration efficiency and high labor intensity; in recent years, a centrifugal machine filtration method is used in japan, and although the method is low in labor intensity, the filtration efficiency is still low, the filtration effect is poor, and the cleaning after filtration is very tedious, time-consuming and labor-consuming.

Therefore, a method for grading and filtering raw lacquer is urgently needed, and the problems that the existing raw lacquer is low in filtering efficiency, high in labor intensity, poor in filtering effect, easy to generate granular feeling and uneven coating surface and tedious to clean can be solved.

Disclosure of Invention

The invention aims to provide a raw lacquer grading and filtering method, and aims to solve the problems that the existing raw lacquer filtering method is low in efficiency, high in labor intensity, poor in filtering effect, easy to generate granular sensation and uneven on the surface of a coating, and complicated in cleaning of filtering equipment.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a raw lacquer grading filtration method, which comprises the following steps:

(1) first-stage filtration: performing primary filtration on raw lacquer by using a bag filter, wherein the precision of a filter bag is 60 meshes;

(2) and (3) second-stage filtration: performing secondary filtration on the raw lacquer subjected to the primary filtration by using a bag filter, wherein the precision of a filter bag is 150 meshes;

(3) and (3) third-stage filtration: performing third-stage filtration on the raw lacquer subjected to the second-stage filtration by using a bag filter, wherein the precision of a filter bag is 300 meshes;

(4) fourth stage filtration: performing fourth-stage filtration on the raw lacquer subjected to the third-stage filtration by using a bag filter, wherein the precision of a filter bag is 600 meshes;

(5) and (3) fifth-stage filtration: and (4) carrying out fifth-stage filtration on the raw lacquer subjected to the fourth-stage filtration by using a bag filter, wherein the precision of a filter bag is 150 meshes.

Preferably, the filtering pressure of the bag filter is less than or equal to 0.2 MPa.

Compared with the prior art, the invention has the following beneficial technical effects:

according to the raw lacquer grading filtration method provided by the invention, 5-grade filtration is carried out on raw lacquer by using bag type filtration equipment, the first-grade 60-mesh filtration, the second-grade 150-mesh filtration, the third-grade 300-mesh filtration, the fourth-grade 600-mesh filtration and the fifth-grade 1250-mesh filtration can ensure that the filtration precision of the raw lacquer reaches 1250 meshes, impurities in raw lacquer liquid are controlled below 10 microns, the performance and the adhesive force of the raw lacquer are greatly improved, and the bag type filtration equipment is simple and convenient to clean, low in labor intensity and large in filtration capacity, so that the filtration effect of the raw lacquer reaches the international first-class level.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a raw lacquer grading and filtering method, which aims to solve the problems that the existing raw lacquer filtering method is low in efficiency, high in labor intensity, poor in filtering effect, easy to generate granular sensation and uneven on the surface of a coating, and complicated in cleaning of filtering equipment.

The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.