A purification and dust removal equipment for powder coating production

Abstract

The present invention relates to the technical field of dust removal equipment, and specifically discloses a purification and dust removal equipment for powder coating production, comprising a concentrically arranged dust removal outer cylinder and a dust removal inner cylinder, the upper end of the dust removal inner cylinder is provided with an air intake channel along a tangential direction, a vertical pipe is concentrically arranged inside the dust removal inner cylinder, the upper end of the vertical pipe is connected with a pipeline fan, the pipeline fan is connected with a conveying pipe, and the conveying pipe is provided with an air intake branch pipe; an annular cylinder is rotatably connected to the outer circumferential surface of the dust removal inner cylinder, an annular plate is connected to the upper end of the annular cylinder, a plurality of cage-type cloth bags are evenly arranged circumferentially on the annular plate, and a plurality of radial partitions are evenly arranged circumferentially on the annular cylinder; the present invention adopts a double-layer design of the dust removal outer cylinder and the inner cylinder, so that the powder airflow is first centrifugally dust-removed in the dust removal inner cylinder, and then the airflow after the primary dust removal is divided into batches and acts with a plurality of cage-type cloth bags to complete secondary filtering and dust removal; the entire dust removal equipment is cleverly designed and compact in structure, and effectively ensures the purification and dust removal effect of the powder coating.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal equipment, and in particular discloses a purification and dust removal equipment for powder coating production. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating prepared by mixing solid resin, pigment, filler and additives. In many links of its production and preparation, a large amount of powder will be stirred up and dispersed in the workshop, seriously endangering the physical and mental health of operators. Therefore, it is necessary to install a dust hood above the area where dust will appear on the production line, and send the powder drawn into the dust hood to the dust removal equipment through a pipe for filtration.

[0003] At present, there are three types of equipment used for powder dust removal and purification on the market: electrostatic dust removal, spray dust removal and bag dust removal. Among them, electrostatic dust removal equipment has high investment and operation energy consumption, spray dust removal consumes a lot of water and cannot be recycled, and bag dust removal is widely used in powder coating purification and dust removal due to its low investment and dust recovery advantages.

[0004] For example, the utility model patent with application number 2022224673361 discloses a pulse dust removal device for powder coating production, including a frame, a dust removal chassis installed on the frame, an ash hopper installed at the bottom of the dust removal chassis, a dust inlet pipe connected to one side of the ash hopper, and a partition provided in the dust removal chassis. The partition divides the internal space of the dust removal chassis into a cleaning chamber located at the upper part and a dust removal chamber located at the lower part. The cleaning chamber is connected to an exhaust mechanism, and a number of circular holes are evenly distributed on the partition. A bag dust removal mechanism is installed in each circular hole. The bag dust removal mechanism includes a filter cloth tube, a bag cage for holding the filter cloth tube open, and a beating assembly for beating the filter cloth tube. The clean chamber of the dust removal chassis is connected to a pulse backflush mechanism. The pulse dust removal device disclosed in the patent is a bag dust collector, which has a certain effect in the purification and dust removal of powder coatings, but there are still some shortcomings. First, the cage bags in this type of bag-type dust collector are arranged in a rectangular array, resulting in the cage bags close to the dust inlet pipe filtering more dust, while the cage bags far from the dust inlet pipe cannot effectively filter the dust, thus affecting the purification and dust removal effect of the powder coating; second, powder coatings are different from dust impurities in the air, and the particle sizes of coating powders vary greatly. Some large-sized coating powders are more likely to adhere to the surface of the bags after contacting them, resulting in a significant decrease in the filtering effect of the cage bags, requiring frequent cleaning. Therefore, in response to the above-mentioned deficiencies of existing pulse dust removal devices, this application proposes a newly designed purification and dust removal equipment for powder coating production to solve the above-mentioned problems of existing pulse dust removal devices. Summary of the invention

[0005] The present invention aims to provide a newly designed purification and dust removal device for powder coating production, so as to achieve full purification and filtration of powder in the powder airflow and improve the filtering and purification effect of the powder airflow.

[0006] The present invention is achieved through the following technical solutions: A purification and dust removal device for powder coating production, comprising a dust removal outer cylinder and a dust removal inner cylinder which are arranged concentrically, and both the dust removal outer cylinder and the dust removal inner cylinder are composed of an upper cylindrical section and a lower conical section, an air intake passage extending along a tangential direction and extending out of the dust removal outer cylinder is arranged at the upper end of the dust removal inner cylinder, a vertical pipe is arranged concentrically inside the dust removal inner cylinder, the upper end of the vertical pipe extending out of the dust removal outer cylinder is connected to a pipeline fan, the pipeline fan is connected to a delivery pipe, and the delivery pipe is provided with an air intake branch pipe connected to the side surface of the upper end of the dust removal outer cylinder; An annular cylinder is rotatably connected to the outer circumferential surface of the dust removal inner cylinder, and a driving assembly for driving the annular cylinder to rotate is arranged on the dust removal inner cylinder, the upper end of the annular cylinder is connected to an annular plate that fits the inner wall of the dust removal outer cylinder, a plurality of cage-type cloth bags are evenly arranged circumferentially on the annular plate, a plurality of radial partitions that fit the inner wall of the dust removal outer cylinder are evenly arranged circumferentially on the outer circumferential surface of the annular cylinder, and each cage-type cloth bag is located in a fan-shaped area between two adjacent radial partitions, an annular partition that fits the outer wall of the dust removal inner cylinder is fixed on the inner wall of the dust removal outer cylinder located below the radial partition, and an ash drop opening is opened on the annular partition on the side away from the air intake branch pipe; An exhaust pipe is connected to the side of the dust removal outer cylinder above the ring plate, and a negative pressure fan is connected to the end of the exhaust pipe.

[0007] As a further configuration of the above scheme, a plurality of through holes are evenly opened circumferentially on the ring plate, sealed bearings connected to the cage bags are arranged in the through holes, a small gear ring is arranged on the cage bags located above the ring plate, a large gear ring meshing with the small gear ring is arranged on the outer circumferential surface of the dust removal inner cylinder, a brush strip is arranged on the ring cylinder located on the radial inner side of each cage bag, and the brush strip is provided with bristles that interact with the cage bags.

[0008] As a further arrangement of the above scheme, the brush strip is connected to the outer wall of the annular cylinder through a radial guide rod and a spring, the lower end of the brush strip is connected to an extension strip, a magnet is fixed to the outer end of the extension strip, and an arc-shaped magnetic strip is arranged on the inner wall of the dust removal outer cylinder above the dust outlet, the arc-shaped magnetic sheet and the magnet are at the same horizontal height and the magnetic poles at the opposite ends of the two are arranged oppositely.

[0009] As a further configuration of the above scheme, the driving assembly includes a driving motor fixed on the outer wall of the lower end of the dust removal inner cylinder, a driving gear is arranged on the motor shaft of the driving motor, and an inner gear ring meshing with the driving gear is arranged on the inner wall of the lower end of the annular cylinder.

[0010] As a further configuration of the above scheme, a gate valve is provided at the lower end of the dust removal outer cylinder, and an opening is provided at the lower end of the dust removal inner cylinder.

[0011] As a further configuration of the above scheme, the lower end of the vertical tube extends to the opening above the lower conical section of the dust removal inner cylinder, and the upper end of the vertical tube extends out of the top of the dust removal outer cylinder and is connected to the pipeline fan through a bend pipe.

[0012] As a further configuration of the above scheme, a plurality of air intake branch pipes connected to the delivery pipe are arranged in rows at intervals up and down, and the air intake branch pipes are all connected to the interior of the fan-shaped area.

[0013] As a further configuration of the above scheme, a frame is also included, and the dust removal outer cylinder is fixedly installed on the top of the frame.

[0014] During the operation of the purification and dust removal equipment for powder coating production disclosed in the present invention, the powder airflow enters the inner tube of the dust removal cylinder along the tangent direction of the inner tube of the dust removal cylinder from the air inlet channel, and the vertical tube is evacuated under the action of the pipeline fan, so that the dust airflow inside the inner tube of the dust removal cylinder forms a vortex, so that some powders with larger particle sizes are separated from the gas under the action of centrifugal force, and are discharged from the bottom of the inner tube of the dust removal cylinder to the bottom of the outer tube of the dust removal cylinder, while the powders with smaller particle sizes are sucked into the vertical tube because their centrifugal force cannot overcome the suction effect below the pipeline fan, thereby realizing the primary separation of large and small particle size powders in the airflow. Subsequently, the powder airflow with small particle size is sent into the annular area between the inner tube of the dust removal cylinder and the outer tube of the dust removal cylinder under the guidance of the conveying pipe and the air inlet branch pipe.

[0015] At the same time, under the action of the driving component, the ring cylinder carries the cage bag and rotates in the annular area, and due to the separation effect of the radial partition, the powder airflow sent in by the air intake branch can enter different fan-shaped areas one after another. The upper opening of the cage bag is sucked by the negative pressure fan, so that the inside of the cage bag forms a negative pressure, so that the powder airflow in the fan-shaped area continuously flows to the cage bag from all sides, and then the powder in the airflow is intercepted by the filtering effect of the cage bag. Finally, when the fan-shaped area rotates and moves to the position of the dust outlet, the powder at the bottom of the fan-shaped area is scraped by the radial partition and discharged from the dust outlet to the bottom of the dust removal outer cylinder.

[0016] In addition, due to the meshing action of the small gear ring on the upper end of the cage bag and the large gear ring on the outer wall of the dust removal inner cylinder, the ring cylinder will make all the cage bags rotate around their own central axis while carrying the cage bags in the annular area. At the same time, due to the design of the brush strips and bristles, the cage bag can filter the powder airflow while brushing off all the dust attached to the outer surface of the cage bag through the bristles, ensuring that the cage bag can filter the next powder airflow with the best filtering effect. Finally, the cleaned powder can be scraped to the dust drop port under the action of the radial partition, and finally gathered at the bottom of the dust removal outer cylinder together with the large-particle powder. Beneficial Effects

[0017] The purification and dust removal equipment for powder coating production disclosed in the present invention adopts a double-layer design of a dust removal outer cylinder and an inner cylinder. During the purification process of the powder coating, the powder airflow is first subjected to centrifugal dust removal in the dust removal inner cylinder, and then the airflow after the primary dust removal is divided into batches and reacted with a plurality of cage-type cloth bags in the annular area formed by the two to complete secondary filtering and dust removal. The entire dust removal equipment is cleverly designed and compactly structured, which effectively ensures the purification and dust removal effect of the powder coating.

[0018] The present invention uses the rotation of the ring cylinder to drive all cage bags to rotate and move inside the annular area, and at the same time divides each cage bag into an independent fan-shaped area through a radial partition, so that the powder airflow can fully contact the outer surface of the cage bag inside the fan-shaped area, thereby achieving effective filtration of the powder, and effectively avoiding the problem of large difference in the filtering effect of the filter elements on both sides of the existing pulse dust removal equipment on the powder airflow, ensuring that all cage bags can be put into effective filtration of the powder airflow, thereby improving the purification and dust removal effect.

[0019] The present invention has further improved the design so that the cage bag can also rotate during the rotational motion, and in the process of its rotation, the dust trapped on its surface is swept away by the action of the bristles on the inside, thereby effectively avoiding the problem of a large amount of dust adhering to the surface of the cage bag during long-term operation, causing its filtering effect to decrease, and further improving the filtering and purification effect of the cage bag on the powder airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention; Figure 2This is a schematic diagram of the first-angle three-dimensional structure of the inner part of the dust removal outer cylinder in Example 1 of the present invention; Figure 3 This is a schematic diagram of the second-angle three-dimensional structure of the inner part of the dust removal outer cylinder in Example 1 of the present invention; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the dust removal inner cylinder in Example 1 of the present invention; Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the dust removal inner cylinder, annular cylinder, cage-type cloth bag, etc. in Example 2 of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the ring cylinder, ring plate, brush strip, etc. in Example 2 of the present invention; Figure 8 This is a schematic diagram of the internal three-dimensional structure of the dust removal outer cylinder in the second embodiment of the present invention; Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 9 , and describes the application in detail with reference to embodiments. Example 1

[0024] Example 1 discloses a purification and dust removal device for powder coating production, referring to the attached Figure 1 and attached Figure 2 , including a frame 1, a dust removal outer cylinder 2, a negative pressure fan 3 and an exhaust pipe 4. The dust removal outer cylinder 2 is fixedly installed on the top of the frame 1, and its upper end is cylindrical and its lower end is conical. At the same time, a gate valve 5 is arranged at the bottom of the dust removal outer cylinder 2. One end of the exhaust pipe 4 is connected to the upper end side of the dust removal outer cylinder 2, and the other end is connected to the negative pressure fan 3, so that the inside of the dust removal outer cylinder 2 is continuously exhausted under the action of the negative pressure fan 3.

[0025] Reference Figures 2~5A dust removal inner cylinder 6 is fixed concentrically inside the dust removal outer cylinder 2. The dust removal inner cylinder 6 is also cylindrical at the upper end and conical at the lower end and is open. Then, an air inlet channel 7 extending out of the dust removal outer cylinder 2 is connected to the outer circumferential surface of the upper end of the dust removal inner cylinder 6, and the air inlet channel 7 is arranged along the tangent direction of the upper end of the dust removal inner cylinder 6, so that the dust airflow transported by the pipeline can flow along the inner wall of the upper end after being guided into the dust removal inner cylinder 6 through the air inlet channel 7. A vertical pipe 8 is concentrically arranged in the dust removal inner cylinder 6. The lower end of the vertical pipe 8 extends to the upper end opening of the conical section of the dust removal inner cylinder 6, and the upper end is connected to a duct fan 9 fixed on the top of the dust removal outer cylinder 2 through a bend pipe. The other end of the duct fan 9 is connected to a delivery pipe 10, and a row of air inlet branches 11 spaced up and down and connected to the dust removal outer cylinder 2 are connected to the delivery pipe 10.

[0026] The outer surface of the upper end of the dust removal inner cylinder 6 is rotatably connected with an annular cylinder 12, and the annular cylinder 12 is located below the connection between the exhaust pipe 4 and the dust removal outer cylinder 2. An inner gear ring 121 is arranged on the inner wall of the lower end of the annular cylinder 12 extending downward to the conical section of the dust removal inner cylinder 6, and then a driving motor 13 is fixed on the outer wall of the lower end of the dust removal inner cylinder 6, and a driving gear 14 meshing with the inner gear ring 121 is arranged on the motor shaft of the driving motor 13, so that the annular cylinder 12 can stably rotate around the outer surface of the dust removal inner cylinder 6 under the action of the driving motor 13.

[0027] A radially outward ring plate 15 is connected to the upper end of the ring cylinder 12, and the outer diameter of the ring plate 15 is equivalent to the inner diameter of the upper end of the dust removal outer cylinder 2, so that the two fit each other. A plurality of through holes are opened in a circular array on the ring plate 15, and a cage bag 16 is installed in each through hole, and the cage bag 16 is located between the cylindrical sections of the dust removal inner cylinder 6 and the dust removal outer cylinder 2. The specific structure of the cage bag 16 is prior art and will not be described here. A plurality of radial baffles 17 are also connected to the outer cylindrical surface of the ring cylinder 12 in a circular array, and the outer ends of the radial baffles 17 fit the inner wall of the dust removal outer cylinder 2, and each cage bag 16 is located in the fan-shaped area between two adjacent radial baffles 17. An annular partition 18 is fixedly connected to the lower end of the inner wall of the dust removal outer cylinder 2, and the annular partition 18 is in contact with the outer wall of the annular cylinder 12. Finally, an ash outlet 181 connected to the lower end of the dust removal outer cylinder 2 is opened on the annular partition 18 away from the side of the air inlet branch pipe 11.

[0028] During the operation of the purification and dust removal equipment for powder coating production disclosed in this embodiment 1, the powder coating enters the air inlet channel 7 along the air flow, and then enters the upper end of the dust removal inner cylinder 6 along the air inlet channel 7. Since the air flow enters along the tangential direction of the dust removal inner cylinder 6, it can form a vortex in the dust removal inner cylinder 6. Under the action of the vortex, powder coating with larger particle size can directly pass through the lower end of the dust removal inner cylinder 6 and fall to the bottom of the dust removal outer cylinder 2, while powder coating with smaller particle size can be extracted by the vertical pipe 8, and then sent into the annular area between the ring plate 15 and the annular partition 18 under the action of the pipeline fan, the conveying pipe 10 and the air inlet branch pipe 11.

[0029] At the same time, under the action of the driving motor 13, the ring cylinder 12 carries the cage bag 16 to rotate in the annular area, and due to the separation effect of the radial partition 17, the powder airflow sent by the air intake branch 11 can enter different fan-shaped areas one after another, and the upper opening of the cage bag 16 in this fan-shaped area is sucked by the negative pressure fan 3 and the exhaust pipe 4, so that a negative pressure is formed inside the cage bag 16, so that the powder airflow in the fan-shaped area continuously flows from all sides to the cage bag 16, and the powder is filtered outside the cage bag 16 through its filtering and interception effect. Finally, when the fan-shaped area rotates and moves to the position of the dust outlet 181, the powder at the bottom of the fan-shaped area is scraped from the ash outlet 181 to the bottom of the dust removal outer cylinder 2 for aggregation. When the dust at the bottom of the dust removal outer cylinder 2 reaches a certain amount, the gate valve 5 is opened to discharge it. Example 2

[0030] Example 2 discloses a purification and dust removal equipment for powder coating production that is further improved and designed based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0031] Reference Figures 6 to 9 In this embodiment 2, a sealed bearing 151 is arranged in the through hole on the ring plate 15, and then the upper end of the cage bag 16 is rotatably connected to the sealed bearing 151. At the same time, a small gear ring 161 is arranged on the upper end of the cage bag 16 above the sealed bearing 151, and then a large gear ring 19 meshing with all the small gear rings 161 is fixedly arranged on the outer circumferential surface of the dust removal inner cylinder 6, so that all the cage bags 16 can realize synchronous rotation through the meshing transmission between the small gear ring 161 and the large gear ring 19 during the rotation of the ring cylinder 12.

[0032] In addition, a radially movable brush strip 22 is movably connected to the outer surface of the ring cylinder 12 on the radial inner side of each cage bag 16 through a spring 20 and a guide rod 21, and bristles 23 that interact with the cage bag 16 are arranged on the radial outer surface of the brush strip 22. An extension strip 24 is connected to the lower end of the brush strip 22, and a magnet 25 is fixed to the outer end of the extension strip 24. An arc-shaped magnetic sheet 26 is arranged on the inner wall of the dust removal outer cylinder 2 above the dust drop port 181, and the arc-shaped magnetic sheet 26 and the magnet 25 are at the same horizontal height, and the magnetic poles of the end of the magnet 25 opposite to the arc-shaped magnetic sheet 26 are arranged oppositely.

[0033] In the second embodiment, the structure is improved and designed as described above. When the cage bag 16 rotates with the ring cylinder 12, all the cage bags 16 rotate around their own central axis. When the cage bag 16 rotates and moves to the top of the dust outlet 181, the magnetic attraction between the magnet 25 and the arc-shaped magnetic sheet 26 will cause the brush strip 22 to overcome the force of the spring 20 and move radially outward until the bristles 23 contact the outer surface of the cage bag 16. Then, during the self-rotation of the cage bag 16, the outer surface of the cage bag 16 can be brushed by the bristles 23, so that the powder attached to the outer surface of the cage bag 16 is swept down and then discharged to the bottom of the dust removal outer cylinder 2 through the dust outlet 181. After being brushed, the cage bag 16 can move to the side of the air intake branch pipe 11 again with the highest purification and dust removal effect, and then filter and purify the next dust airflow.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification and dust removal equipment for powder coating production, characterized in that: It includes a dust removal outer cylinder and a dust removal inner cylinder which are arranged concentrically, and the dust removal outer cylinder and the dust removal inner cylinder are both composed of an upper cylindrical section and a lower conical section, the upper end of the dust removal inner cylinder is provided with an air inlet passage extending along a tangential direction and extending out of the dust removal outer cylinder, a vertical pipe is concentrically arranged inside the dust removal inner cylinder, the upper end of the vertical pipe extending out of the dust removal outer cylinder is connected to a duct fan, the duct fan is connected to a delivery pipe, and the delivery pipe is provided with an air inlet branch pipe connected to the side surface of the upper end of the dust removal outer cylinder; An annular cylinder is rotatably connected to the outer circumferential surface of the dust removal inner cylinder, and a driving assembly for driving the annular cylinder to rotate is arranged on the dust removal inner cylinder, the upper end of the annular cylinder is connected to an annular plate that fits the inner wall of the dust removal outer cylinder, a plurality of cage-type cloth bags are evenly arranged circumferentially on the annular plate, a plurality of radial partitions that fit the inner wall of the dust removal outer cylinder are evenly arranged circumferentially on the outer circumferential surface of the annular cylinder, and each cage-type cloth bag is located in a fan-shaped area between two adjacent radial partitions, an annular partition that fits the outer wall of the dust removal inner cylinder is fixed on the inner wall of the dust removal outer cylinder located below the radial partition, and an ash drop opening is opened on the annular partition on the side away from the air intake branch pipe; An exhaust pipe is connected to the side of the dust removal outer cylinder above the ring plate, and a negative pressure fan is connected to the end of the exhaust pipe.

2. The purification and dust removal equipment for powder coating production according to claim 1, characterized in that: The ring plate is evenly provided with a plurality of through holes in the circumferential direction, and a sealed bearing connected to a cage bag is arranged in the through hole, a small gear ring is arranged on the cage bag located above the ring plate, a large gear ring meshing with the small gear ring is arranged on the outer circumferential surface of the dust removal inner cylinder, and a brush strip is arranged on the ring cylinder located on the radial inner side of each cage bag, and the brush strip is provided with bristles that interact with the cage bag.

3. The purification and dust removal equipment for powder coating production according to claim 2, characterized in that: The brush strip is connected to the outer wall of the annular cylinder through a radial guide rod and a spring, the lower end of the brush strip is connected to an extension strip, the outer end of the extension strip is fixed with a magnet, and an arc-shaped magnetic strip is arranged on the inner wall of the dust removal outer cylinder above the dust drop port, the arc-shaped magnetic sheet and the magnet are at the same horizontal height, and the magnetic poles at the opposite ends of the two are arranged oppositely.

4. The purification and dust removal equipment for powder coating production according to claim 1, characterized in that: The driving assembly comprises a driving motor fixed on the outer wall of the lower end of the dust removal inner cylinder, a driving gear is arranged on the motor shaft of the driving motor, and an inner gear ring meshing with the driving gear is arranged on the inner wall of the lower end of the annular cylinder.

5. The purification and dust removal equipment for powder coating production according to claim 1, characterized in that: The lower end of the dust removal outer cylinder is provided with a gate valve, and the lower end of the dust removal inner cylinder is opened.

6. The purification and dust removal equipment for powder coating production according to claim 5, characterized in that: The lower end of the vertical tube extends to the upper opening of the lower conical section of the dust removal inner cylinder, and the upper end of the vertical tube extends out of the top of the dust removal outer cylinder and is connected to the pipeline fan through a bent pipe.

7. The purification and dust removal equipment for powder coating production according to claim 1, characterized in that: The multiple air intake branch pipes connected to the delivery pipe are arranged in rows at intervals up and down, and the air intake branch pipes are all connected to the interior of the fan-shaped area.

8. The purification and dust removal equipment for powder coating production according to claim 1, characterized in that: It also includes a frame, and the dust removal outer cylinder is fixedly installed on the top of the frame.

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