CN-121972296-A - Superfine powder recovery efficiency optimizing system in powder coating production

CN121972296ACN 121972296 ACN121972296 ACN 121972296ACN-121972296-A

Abstract

The invention relates to an efficiency optimization system for recovering superfine powder in powder coating production, which comprises a high-efficiency cyclone separator, a pulse cloth bag dust collector and a wet type electric dust collector three-stage recovery system, wherein an air inlet of the high-efficiency cyclone separator is connected with an exhaust pipeline of production equipment, an air inlet of the pulse cloth bag dust collector is connected with an air outlet of the cyclone separator through a pipeline, and an air inlet of the wet type electric dust collector is connected with an air outlet of the pulse cloth bag dust collector. The wet electric dust collector is added as a fine treatment unit after the traditional secondary recovery, and the wet electric dust collector can accurately capture the powder of a leaking net which is difficult to recover by utilizing the dual functions of high-voltage electric field charge and liquid flushing through the three-stage progressive design of cyclone coarse separation, cloth bag middle-effect filtration and wet electric dust collector fine trapping, so that the technical short plates of cyclone separators for the sudden drop of the efficiency of <5 mu m particles and cloth bag dust collectors for the easy penetration of <1 mu m particles are made up, and the problem of fine powder loss is solved.

Inventors

WANG FENG
GUO ZILIN
Lei Guoan
LI XINGYANG
SHI ZHISHENG
REN YIMING
ZHU ZEZHOU
ZHANG RONGLI
WANG PENG
ZHANG YA
YANG RENCHUN

Assignees

安徽美佳新材料股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260316

Claims (9)

1. The utility model provides a recovery efficiency optimizing system of superfine powder in powder coating production which characterized in that includes: the air inlet of the high-efficiency cyclone separator is connected with an exhaust pipeline of production equipment; The air inlet of the pulse bag-type dust collector is connected with the air outlet of the cyclone separator through a pipeline; The wet electric dust collector is characterized in that an air inlet of the wet electric dust collector is connected with an air outlet of the pulse bag-type dust collector.
2. The system for optimizing recovery efficiency of ultrafine powder in powder coating production of claim 1, wherein the high efficiency cyclone comprises: the side wall of the upper part of the cylinder is provided with an air inlet and an air outlet, the direction of the air inlet is tangential to the inner wall of the cylinder, and the air outlet is positioned at the top of the cylinder; The cone is coaxially connected with the lower end of the cylinder body, the section of the cone is in an inverted conical shape, and an ash discharge port capable of being opened and closed is arranged at the bottom of the cone; the exhaust pipe is coaxially arranged inside the cylinder body and the cone, the upper end of the exhaust pipe is connected with the air outlet, and the lower end of the exhaust pipe extends into the cone; The spiral descending airflow channel is formed between the outer wall of the exhaust pipe and the inner walls of the cylinder body and the cone, and the ascending inner vortex channel is formed in the exhaust pipe.
3. The system for optimizing recovery efficiency of ultrafine powder in powder coating production of claim 2, wherein the cylinder and the cone inner wall are coated with a wear-resistant ceramic layer.
4. The system for optimizing recovery efficiency of ultrafine powder in powder coating production according to claim 1, wherein the pipeline is divided into three parts, namely a front end pipe close to one side of the high-efficiency cyclone separator, a rear end pipe close to one side of the pulse bag dust collector and a self-cleaning filter system arranged between the front end pipe and the rear end pipe.
5. The system for optimizing recovery efficiency of ultrafine powder in powder coating production according to claim 4, wherein the self-cleaning filter system comprises a turntable, a central shaft of the turntable is fixed on a front end pipe and a rear end pipe, the central shaft is driven by a motor, a filter screen disc is circumferentially arranged on the turntable, the diameter of the filter screen disc is identical to that of the front end pipe and that of the rear end pipe, the central shaft is driven by the motor to rotate, the filter screen disc at the uppermost end of the turntable is butted with the front end pipe and the rear end pipe, a dust collection pipe is further arranged on the front end pipe, a pipe orifice of the dust collection pipe points to the filter screen disc at the lowermost end of the turntable, a filter box is arranged on the dust collection pipe, a filter screen is arranged in the filter box, and a suction pump is connected to the filter box through a pipeline.
6. The system for optimizing recovery efficiency of ultrafine powder in powder coating production according to claim 5, wherein a plurality of holes are circumferentially arranged on the turntable, and the holes are connected with the filter screen disc through springs.
7. The system for optimizing recovery efficiency of ultrafine powder in powder coating production of claim 1, further comprising a powder recovery bin connected to the high-efficiency cyclone and the dust discharge port of the pulse bag-type dust collector, respectively.
8. The system for optimizing recovery efficiency of ultrafine powder in powder coating production of claim 1, further comprising a waste liquid sedimentation tank connected to a drain port of the wet electric precipitator sump.
9. The system for optimizing recovery efficiency of ultrafine powder in powder coating production according to claim 1, wherein the waste liquid sedimentation tank adopts a sloping plate sedimentation design, and the sedimented powder is recycled after being dried.

Description

Superfine powder recovery efficiency optimizing system in powder coating production Technical Field The invention relates to the field of dust removal equipment, in particular to a recovery efficiency optimization system of superfine powder in powder coating production. Background Ultrafine powders are a non-negligible problem in the production of powder coatings. The ultrafine powder as used herein refers to those powders having a particle size of less than 10. Mu.m. Because of their very small particle size, they tend to drift around with the airflow. This phenomenon brings a number of adverse effects, on the one hand, a great amount of raw materials are wasted, so that the production cost is increased, and on the other hand, the scattered superfine powder can also block filter bags, so that the normal operation of production equipment is affected, or the load of waste gas treatment is increased, so that the waste gas treatment work becomes harder. Currently, in dealing with ultrafine powder problems, a combination of a cyclone separator and a bag-type dust collector is commonly used in the industry. The combination mode can effectively recover superfine powder to a certain extent, and the recovery rate is about 95-98%. However, even if the more effective treatment mode is adopted, part of fine powder still cannot be effectively trapped, so that the problems of resource waste and environmental protection in the production process still exist. Disclosure of Invention Aiming at the optimization requirement of superfine powder recovery efficiency in powder coating production, the method combines the limitation of the combination of the prior cyclone separator and the cloth bag dust collector, and adopts ‌ three-stage recovery system ‌ for upgrading. The technical scheme adopted in the invention is as follows: An efficiency optimization system for recovering ultrafine powder in powder coating production, comprising: the air inlet of the high-efficiency cyclone separator is connected with an exhaust pipeline of production equipment; The air inlet of the pulse bag-type dust collector is connected with the air outlet of the cyclone separator through a pipeline; The wet electric dust collector is characterized in that an air inlet of the wet electric dust collector is connected with an air outlet of the pulse bag-type dust collector. The invention further discloses the following technology: preferably, the high efficiency cyclone separator comprises: the side wall of the upper part of the cylinder is provided with an air inlet and an air outlet, the direction of the air inlet is tangential to the inner wall of the cylinder, and the air outlet is positioned at the top of the cylinder; The cone is coaxially connected with the lower end of the cylinder body, the section of the cone is in an inverted conical shape, and an ash discharge port capable of being opened and closed is arranged at the bottom of the cone; the exhaust pipe is coaxially arranged inside the cylinder body and the cone, the upper end of the exhaust pipe is connected with the air outlet, and the lower end of the exhaust pipe extends into the cone; The spiral descending airflow channel is formed between the outer wall of the exhaust pipe and the inner walls of the cylinder body and the cone, and the ascending inner vortex channel is formed in the exhaust pipe. Preferably, the inner walls of the cylinder and the cone are coated with a wear-resistant ceramic layer. Preferably, the pipeline is divided into three parts, namely a front end pipe close to one side of the high-efficiency cyclone separator, a rear end pipe close to one side of the pulse bag-type dust collector and a self-cleaning filter system arranged between the front end pipe and the rear end pipe. Preferably, the self-cleaning filter system comprises a rotary table, a central shaft of the rotary table is fixed on a front end pipe and a rear end pipe, the central shaft is driven by a motor, a filter screen disc is circumferentially arranged on the rotary table, the diameter of the filter screen disc is the same as that of the front end pipe and that of the rear end pipe, the motor drives the central shaft to rotate, the filter screen disc at the uppermost end of the rotary table is in butt joint with the front end pipe and the rear end pipe, a dust collection pipe is further arranged on the front end pipe, a pipe orifice of the dust collection pipe points to the filter screen disc at the bottommost end of the rotary table, a filter box is arranged on the dust collection pipe, a filter screen is arranged in the filter box, and a suction pump is connected to the filter box through a pipeline. Preferably, a plurality of holes are circumferentially arranged on the rotary table, and the holes are connected with the filter screen disc through springs. Preferably, the device also comprises a powder recovery bin which is respectively connected with the high-efficiency cyclone separator and the as