CN220634687U - Ash bucket and powder particle size optimization grader with same - Google Patents

Abstract

The utility model relates to an ash bucket and a powder particle size optimization classifier with the same, and belongs to the technical field of powder particle size optimization equipment. The main body of the ash bucket is an ash bucket body with a plurality of grid layers in the interior, the ash bucket body is conical, a discharge hole is formed in the bottom of the ash bucket body, a plurality of elutriation holes are formed in the position, close to the bottom, of the ash bucket body, the grid layers are arranged in the position, close to the top, of the interior of the ash bucket body and are arranged at intervals up and down, the grid layers are in a grid shape and are formed by a plurality of cross bars and longitudinal bars in a staggered mode, and two ends of the cross bars and the longitudinal bars are fixed on the inner wall of the ash bucket body. The utility model can lead the particle size distribution to be more concentrated, the utilization rate of the powder coating to be high, the edges and corners of the particle surface to be less, the outer surface to be more round, the powder to be charged uniformly, and finally the surface coating of the sprayed workpiece to be uniform.

Description

Ash bucket and powder particle size optimization grader with same

Technical Field

The utility model relates to an ash bucket and a powder particle size optimization classifier with the same, and belongs to the technical field of powder particle size optimization equipment.

Background

With the increasingly completed powder spraying technology, the demands of the market for electrostatic powder coatings are becoming wider and wider, and the quality requirements are also becoming higher and higher. The particle size distribution of the powder coating produced by the existing powder production equipment is wide and is not centralized, so that the upper part of a coating sprayed on the surface is thin and the lower part is thick and uneven, a spray gun is easy to block, more fine particles PM2.5 flying in the air are produced, the powder utilization rate is low, great waste is generated, and defects such as orange peel and the like are easy to generate. With the annual rising of the cost of raw materials, labor, places and the like, the improvement of the utilization rate of the coating and the reduction of the cost become the necessary trend of market development.

At present, some powder particle size grading machines appear on the market, although the utilization rate of materials is greatly improved, as the surfaces of particles have more edges and corners, more air is generated after the materials are sprayed and piled up, and after the materials are melted, uneven surface coating films are still clearly visible under illumination, so that the particles of the powder coating are uneven in charging property and poor in fluidity.

Therefore, there is an urgent need for a powder particle size preference classifier which can overcome the above technical problems.

Disclosure of Invention

In order to solve the defects of the prior art, the utility model aims to provide an ash bucket and a powder particle size optimization classifier with the ash bucket, which can ensure that the more concentrated the particle size distribution is, the higher the utilization rate of powder coating is, the fewer the edges and corners of the particle surface are, the more nearly circular the outer surface is, the uniform the powder is charged, and finally the uniform coating on the surface of a sprayed workpiece can be realized.

The utility model provides a ash bucket, its special character lies in that its main part is the ash bucket body 5 that has a plurality of grid layers 30 in inside, and ash bucket body 5 is the toper and the bottom is equipped with discharge gate 15, and ash bucket body 5 is located to offer a plurality of washing holes 29 by lower position department, and a plurality of grid layers 30 are installed in ash bucket body 5 inside and are located the upper position department, and upper and lower interval arrangement, grid layer 30 is latticed, comprises a plurality of horizontal poles 31, vertical pole 32 are crisscross, and horizontal pole 31, vertical pole 32 both ends are fixed in on the inner wall of ash bucket body 5.

The powder particle size optimizing classifier comprises a shell 2 provided with a feed inlet 1, a detachable top cover 3 is arranged at the top of the shell 2, a detachable conical cavity 4 is arranged at the bottom of the shell, an ash bucket body 5 is embedded in the conical cavity 4, and the classifier is characterized in that the ash bucket body 5 is provided with an ash bucket body 5 with a plurality of grid layers 30 inside, at least one air inlet pipeline 6 is arranged below the conical cavity 4, a control valve 7 is arranged on the air inlet pipeline 6, a motor 8 is arranged above the top cover 3, the motor 8 drives an impeller 10 to rotate through a connecting shaft 9, the impeller 10 is positioned in the shell 2, a discharge cavity 11 is further arranged between the top cover 3 and the motor 8, a discharge port 12 is arranged on the side surface of the discharge cavity 11, and the discharge port 12 is communicated with a ventilator 24 through a pipeline;

the ash bucket body 5 is conical, the bottom of the ash bucket body 5 is provided with a discharge hole 15, a plurality of elutriation holes 29 are formed in the lower position of the ash bucket body 5, a plurality of grid layers 30 are arranged in the upper position of the inside of the ash bucket body 5 and are arranged at intervals up and down, the grid layers 30 are in a grid shape and are formed by a plurality of cross bars 31 and longitudinal bars 32 in a staggered mode, and two ends of the cross bars 31 and the longitudinal bars 32 are fixed on the inner wall of the ash bucket body 5;

the top of the ash bucket body 5 is arranged at the top of the conical cavity 4 through a flange 13;

the impeller 10 comprises a flange 16 arranged at the bottom of the connecting shaft 9, a circle of blades 17 are arranged on the circumference of the flange 16 at intervals, the diameter of the inner ring at the bottom of each blade 17 is smaller than that of the inner ring at the top, the bottoms of the blades 17 are arranged on the flange 16, and the tops of the blades 17 are arranged on the reinforcing ring 28;

the included angle between the tangential direction of the blade 17 and the flange 16 is 15-20 degrees;

the bottom of the conical cavity 4 is provided with a base 18, and the number of the air inlet pipelines 6 is two and both the two air inlet pipelines are arranged on the base 18;

the shell 2 is provided with a supporting leg 19;

the feeding port 1 is sequentially communicated with the pulverizer 20 and the feeder 21 through pipelines, the discharging port 15 is sequentially communicated with the separator 22, the dust removal box 23 and the ventilator 24 through pipelines, and the bottom of the conical cavity 4 is sequentially connected with the rotary screen 26 and the weighing device 27;

the top cover 3 is provided with an air regulating valve 25.

The ash bucket and the powder particle size optimization classifier with the same are ingenious in structural design and have the following beneficial effects:

1. because the ash bucket is internally provided with a plurality of grid layers at the upper position, in the working process, material particles continuously collide with the grid layers, edges and corners on the surfaces of the material particles can be greatly improved under the dual effects of friction force and impact force, and practice proves that the structure can enable the edges and corners of the material to be polished more circularly, the surface area is reduced compared with that of a common structure, the fluidity of powder coating is improved, the material utilization rate is further improved, and the edges and corners of the material particles become more circularly through grinding, the bulk density of the material is increased, the flatness of the surface of the melted material is greatly improved, and even more ideal effects can be obtained when the formulation is reasonable.

2. The powder coating is subjected to online or offline production for particle size grading optimization, so that the superfine powder content below 10 mu m is effectively reduced, the coarse particle size is subjected to regrinding processing, the fine particle size is subjected to regrinding, and the particle size distribution of the graded and optimized finished powder coating is very concentrated;

3. the circulation times are increased during automatic spraying, and the powder feeding rate is improved;

4. the quality of the powder coating is improved, the powder coating with the same quality can be sprayed out to a larger area, the thickness of the coating is more uniform, and the surface quality is greatly improved.

Drawings

Fig. 1: the ash bucket is structurally schematic;

fig. 2: the utility model relates to a structure schematic diagram of an easy-to-clean powder particle size optimization classifier;

fig. 3: the utility model relates to a cross-sectional view of an impeller of a particle size optimization classifier of easily-cleaned powder;

fig. 4: the utility model relates to a top view of an impeller of a particle size optimization classifier for easily cleaning powder;

fig. 5: the utility model relates to a connection relation diagram of an easy-to-clean powder particle size optimization classifier, a pulverizer, a feeder, a separator, a dust removal box, a ventilator, a rotary screen and a weighing device;

in the figure: 1. a feed inlet; 2. a housing; 3. a top cover; 4. a conical chamber; 5. an ash bucket body; 6. an air inlet pipeline; 7. a control valve; 8. a motor; 9. a connecting shaft; 10. an impeller; 11. a discharge chamber; 12. a discharge port; 13. a flange; 15. A discharge port; 16. a flange plate; 17. a blade; 18. a base; 19. a support leg; 20. a pulverizer; 21. a feeding machine; 22. a separator; 23. a dust removal box; 24. a ventilator; 25. an air regulating valve; 26. rotary screening; 27. a weighing device; 28. a reinforcing ring; 29. washing the wells; 30. a grid layer; 31. a cross bar; 32. a vertical rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment provides an ash bucket, referring to fig. 1, the main body of the ash bucket is an ash bucket body 5 with a plurality of grid layers 30 inside, the ash bucket body 5 is conical, a discharge hole 15 is formed in the bottom of the ash bucket body 5, a plurality of washing holes 29 are formed in the lower position of the ash bucket body 5, the grid layers 30 are installed in the upper position of the ash bucket body 5 and are arranged at intervals up and down, the grid layers 30 are in a grid shape and are formed by a plurality of cross bars 31 and longitudinal bars 32 in a staggered mode, and two ends of the cross bars 31 and the longitudinal bars 32 are fixed on the inner wall of the ash bucket body 5.

According to the embodiment, as the plurality of grid layers are arranged at the upper position inside the ash bucket, in the working process, material particles continuously collide with the grid layers, edges and corners on the surfaces of the material particles can be greatly improved under the dual effects of friction force and impact force, and practice proves that the edges and corners of the material can be polished more circularly, the surface area is reduced compared with that of a common structure, the fluidity of powder coating is improved, the material utilization rate is further improved, and the edges and corners of the material particles become more circularly through grinding, the stacking density of the material is increased, the flatness of the surface of the melted material is greatly improved, and even more ideal effects can be obtained when the formulation is reasonable.

Referring to fig. 1-5, the preferred classifier for powder particle size of ash bucket of the embodiment comprises a shell 2 provided with a feed inlet 1, a detachable top cover 3 is installed at the top of the shell 2, a detachable conical chamber 4 is installed at the bottom of the shell, an ash bucket body 5 is installed in the conical chamber 4 in an embedded mode, and the preferred classifier is characterized in that the ash bucket body 5 is provided with a plurality of grid layers 30 inside, at least one air inlet pipeline 6 is arranged below the ash bucket body 5, a control valve 7 is installed on the air inlet pipeline 6, a motor 8 is arranged above the top cover 3, the motor 8 drives an impeller 10 to rotate through a connecting shaft 9, the impeller 10 is located in the shell 2, a discharge chamber 11 is further arranged between the top cover 3 and the motor 8, a discharge hole 12 is formed in the side face of the discharge chamber 11, and the discharge hole 12 is communicated with a ventilator 24 through a pipeline.

The ash bucket body 5 of this embodiment is toper and the bottom is equipped with discharge gate 15, and ash bucket body 5 is equipped with a plurality of washing holes 29 by lower position department, and a plurality of grid layers 30 are installed in ash bucket body 5 inside and are leaned on upper position department, and upper and lower interval arrangement, grid layer 30 is latticed, comprises a plurality of horizontal poles 31, vertical pole 32 are crisscross, and horizontal pole 31, vertical pole 32 both ends are fixed in on the inner wall of ash bucket body 5.

The top of the ash bucket body 5 is arranged at the top of the conical cavity 4 through a flange 13;

the specific structure of the impeller is as follows: the impeller 10 comprises a flange plate 16 arranged at the bottom of the connecting shaft 9, a circle of blades 17 are arranged on the circumference of the flange plate 16 at intervals, the diameter of the inner ring at the bottom of each blade 17 is smaller than that of the inner ring at the top, the bottom of each blade 17 is arranged on the flange plate 16, the top of each blade 17 is arranged on a reinforcing ring 28, and an included angle between the tangential direction of each blade 17 and the flange plate 16 is 15-20 degrees;

in order to facilitate the installation of the air inlet pipelines 6 and ensure the air inlet in the conical chamber 4 from bottom to top, the bottom of the conical chamber 4 is provided with a base 18, and the number of the air inlet pipelines 6 is two and both the two air inlet pipelines are arranged on the base 18;

to facilitate a stable installation, the housing 2 is provided with legs 19;

when in use, the feed inlet 1 is sequentially communicated with the pulverizer 20 and the feeder 21 through pipelines, the discharge outlet 15 is sequentially communicated with the separator 22, the dust removal box 23 and the ventilator 24 through pipelines, and the bottom of the conical cavity 4 is sequentially connected with the rotary screen 26 and the weighing device 27.

Working principle:

the classifier material lifting power of the present utility model is from the ventilator 24. After the materials are conveyed from the feeder 21 to the pulverizer 20 and are pulverized, the materials are lifted to the classifier of the utility model, the motor 8 drives the impeller 10 to rotate through the connecting shaft 9, particles with a certain particle size are separated through the centrifugal force, the materials are spirally moved in a variable speed along the inner wall under the double effects of the centrifugal force and the dead weight, when the materials move to the position with a smaller cylinder diameter in the ash bucket body 5, the materials generate larger friction force due to the fact that the space is reduced, the grid layer 30 is arranged in the cone, the materials are subjected to certain impact when passing through the grid layer 30 at a certain speed, the edges and corners of the surfaces of the materials are greatly improved under the double effects of the friction force and the impact force, and the structure is proved by practice to enable the edges and corners of the materials to be polished more round, the surface area is reduced compared with that of the common structure, and the fluidity of the powder coating is improved. The materials are discharged to a rotary screen 26 through a discharge port at the lower end of the conical chamber 4, coarse powder exceeding the required particle size is screened out through the rotary screen 26, and the finished powder enters a packaging box through a discharge port of the rotary screen 26 and is packaged after being metered by a weighing device 27. Meanwhile, a proper amount of secondary fresh air is filled into the air inlet pipeline 6 with the control valve 7, so that partial materials smaller than the required particle size are screened out, the materials are conveyed to the separator 22 through the impeller 10 and the discharging cavity 11, most dust is separated and collected through gas-solid separation of the separator 22, and the other small part of dust is conveyed to the dust removing box 23 to be filtered and collected by the filter element, clean air is discharged into the atmosphere through the ventilator 24, and the production is finished. The embodiment is provided with a motor 8 and an air inlet pipeline 6 with a control valve 7, and the purpose of particle size sorting is achieved by adjusting parameters of the motor 8 and the control valve. The utility model can realize online one-time gas-solid separation in one production line, does not need to use extra equipment and sites, can finish production by one-time operation of workers, and reduces dust pollution.

While embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a ash bucket, its characterized in that main part is the ash bucket body that inside has a plurality of grid layers, and the ash bucket body is toper and bottom is equipped with the discharge gate, and a plurality of elutriation holes have been seted up to ash bucket body position department down, and a plurality of grid layers are installed in ash bucket body inside position department of leaning on, and upper and lower interval arrangement, the grid layer is latticed, comprises a plurality of horizontal poles, the indulge pole is crisscross, and horizontal pole, indulge pole both ends are fixed in on the inner wall of ash bucket body.

2. The utility model provides a preferred grader of powder particle diameter of ash bucket, including the casing of seting up the feed inlet, detachable top cap is installed at the casing top, detachable toper cavity is installed to the bottom, inlay in the toper cavity and establish and install the ash bucket body, its characterized in that ash bucket body adopts the inside ash bucket body that has a plurality of grid layers, toper cavity below is equipped with at least one air inlet pipeline, install control valve on the air inlet pipeline, the top cap top is equipped with the motor, the motor passes through the connecting axle drive impeller and rotates, the impeller is located the casing, still be equipped with ejection of compact cavity between top cap and the motor, the discharge gate has been seted up to ejection of compact cavity side, the discharge gate is linked together through the pipeline with the ventilation blower.

3. The powder particle size optimization classifier according to claim 2, wherein the ash bucket body is conical, a discharge hole is formed in the bottom of the ash bucket body, a plurality of elutriation holes are formed in the lower position of the ash bucket body, a plurality of grid layers are arranged in the upper position of the ash bucket body and are arranged at intervals up and down, the grid layers are in a grid shape and are formed by a plurality of cross bars and longitudinal bars in a staggered mode, and two ends of the cross bars and the longitudinal bars are fixed on the inner wall of the ash bucket body.

4. The powder particle size preference classifier of claim 2 wherein the top of the hopper body is mounted to the top of the conical chamber by a flange.

5. The powder particle size optimizing classifier as defined in claim 2, wherein the impeller includes a flange plate mounted on the bottom of the connecting shaft, a ring of spaced blades are mounted on the circumference of the flange plate, the diameter of the inner ring of the bottom of the blades is smaller than that of the inner ring of the top of the blades, the bottom of the blades is mounted on the flange plate, and the top of the blades is mounted on the reinforcing ring.

6. The powder particle size classifier according to claim 5, wherein the angle between the tangential direction of the blade and the flange is 15-20 °.

7. The powder particle size optimization classifier according to claim 2, wherein the base is arranged at the bottom of the conical chamber, and the number of the air inlet pipelines is two and the two air inlet pipelines are arranged on the base.

8. The powder particle size preference classifier of claim 2 wherein the housing has legs mounted thereon.

9. The powder particle size optimization classifier according to claim 2, wherein the feeding port is sequentially communicated with the pulverizer and the feeder through pipelines, the discharging port is sequentially communicated with the separator, the dust removing box and the ventilator through pipelines, and the bottom of the conical cavity is sequentially connected with the rotary screen and the weighing device.

10. The powder particle size preference classifier according to claim 2, wherein the top cover is provided with a gas regulating valve.