CN213494943U - Easily clean preferred grader of powder particle size - Google Patents

Abstract

The utility model relates to an easy clean preferred grader of powder particle diameter belongs to the preferred equipment technical field of powder particle diameter. Including the casing of seting up the feed inlet, the 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 ash bucket in the toper, interior ash bucket has seted up a plurality of elutriation holes by lower position department, the toper cavity below is equipped with at least one air-supply line, install control flap on the air-supply line, the top cap top is equipped with the motor, the motor passes through 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. The utility model discloses can carry out the preference with the powder coating particle diameter in process of production to reduce the superfine powder content below 10 mu m, can screen the powder coating particle diameter according to actual demand, improve the powder coating quality, be convenient for wash moreover.

Description

Easily clean preferred grader of powder particle size

Technical Field

The utility model relates to an easy clean preferred grader of powder particle diameter belongs to the preferred equipment technical field of powder particle diameter.

Background

With the increasingly perfect powder spraying technology, the market demand for electrostatic powder coatings is more and more extensive, and the quality requirements are higher and higher. The powder particles produced by the existing powder production equipment are large, the particle size parameter distribution is wide, the coating sprayed on the surface is thick, the powder utilization rate is low, and great waste is generated. Moreover, the coating is thick, so that the defects of orange peel, spots and the like are easily caused. Powder coating is used as an environment-friendly coating to gradually replace solvent-based coatings and is widely applied to various fields. The quality of the powder coating becomes better and better along with continuous application, and how to improve the quality of the powder is very important in the production process of the powder coating. The influence of the particle size distribution of the powder on the quality of the powder coating is great, and the increase of the utilization rate of the coating and the reduction of the cost become necessary trends of market development.

In general, the smaller the powder particle size, the better the leveling property of the coating during curing, and the smoother and smoother the appearance of the coating film. But the powder particle size is too fine (particle size <10 μm) and is essentially uncharged. The electrification of the powder is proportional to the square of the particle diameter, and if the powder is too fine, the electrification is reduced, and the coating efficiency is lowered. The storage stability of the powder coating is also related to the particle size, and generally, the finer the powder is, especially, the content of the ultrafine powder of 10 μm or less is too much, so that the powder is liable to absorb moisture, agglomerate and decrease in stability, and when it is used, the spray gun is clogged, and the powder is not discharged well.

At present, in the production process of powder coating, no separation equipment for carrying out particle size on powder is provided, and the problems of wide particle size distribution, low powder feeding rate, unstable quality, small spraying area, serious pollution, gun blockage, influence on efficiency, easy agglomeration of finished powder, poor storage resistance and the like exist.

Therefore, there is an urgent need for a powder particle size-optimizing classifier that can overcome the above-mentioned problems.

Disclosure of Invention

For solving prior art's not enough, the utility model aims at providing an easy clean preferred grader of powder particle diameter, this grader can carry out the preference with the powder coating particle diameter in process of production to reduce the superfine powder content below 10 mu m, can filter the powder coating particle diameter according to actual demand, improve the powder coating quality, be convenient for wash moreover.

The utility model discloses an easy clean powder particle size preference grader, its special character lies in including the casing 2 of seting up feed inlet 1, detachable top cap 3 is installed at casing 2 top, detachable toper cavity 4 is installed to the bottom, toper cavity 4 is embedded to be established and is installed toper interior ash bucket 5, interior ash bucket 5 has seted up a plurality of elutriation holes 29 by lower position, toper cavity 4 below is equipped with at least one air-supply line 6, air-supply line 6 is last to install control flap 7, top cap 3 top is equipped with motor 8, motor 8 drives impeller 10 through connecting axle 9 and rotates, impeller 10 is located casing 2, still be equipped with ejection of compact cavity 11 between top cap 3 and the motor 8, ejection of compact cavity 11 side has seted up discharge gate 12, discharge gate 12 is linked together through the pipeline with ventilation blower 24;

the top of the inner ash bucket 5 is arranged at the top of the conical chamber 4 through a flange 13, a cleaning handle 14 is arranged at the upper position in the inner ash bucket 5, and a discharge hole 15 is arranged below the inner ash bucket 5;

the impeller 10 comprises a flange 16 arranged at the bottom of the connecting shaft 9, a circle of spaced blades 17 are arranged on the circumference of the flange 16, the diameter of an inner ring at the bottom of each blade 17 is smaller than that of an inner ring at the top, the bottom of each blade 17 is arranged on the flange 16, and the top of each blade 17 is 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 chamber 4 is provided with a base 18, and the number of the air inlet pipelines 6 is two, and the two air inlet pipelines are arranged on the base 18;

the shell 2 is provided with supporting legs 19;

the feeding hole 1 is sequentially communicated with a flour mill 20 and a feeding machine 21 through pipelines, the discharging hole 15 is sequentially communicated with a separator 22, a dust removal box 23 and a ventilator 24 through pipelines, and the bottom of the conical chamber 4 is sequentially connected with a rotary screen 26 and a weighing device 27;

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

The utility model discloses an easy clean preferred grader of powder particle diameter, structural design is ingenious, has following beneficial effect:

1. the powder coating is produced on line or off line for grading and optimizing the particle size, the content of ultrafine powder below 10 mu m is effectively reduced, the coarse particle size is ground again, the fine particle size is squeezed again, and the particle size distribution of the finished powder coating optimized by grading is very concentrated;

2. the electrification property of the finished product powder coating is enhanced, and the storage resistance is improved;

3. the cycle 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 in a larger area, the coating thickness is more uniform, and the surface quality is greatly improved.

To sum up, the utility model discloses can separate and collect the powder that reaches customer requirement particle diameter scope in the good powder of breakage with middlings and superfine powder, the very concentrated granule of these particle diameter parameter distributions has improved the utilization ratio greatly in the spraying process to the powder of the same quality can spout bigger area, and the coating thickness is even, and surface quality obtains very big improvement, thereby has satisfied the requirement of market reduce cost.

Drawings

FIG. 1: the utility model relates to a structure schematic diagram of an easy-to-clean powder particle size optimization classifier;

FIG. 2: the utility model relates to a sectional view of an impeller of an easy-to-clean powder particle size optimization classifier;

FIG. 3: the utility model relates to a top view of an impeller of an easy-to-clean powder particle size optimization classifier;

FIG. 4: the utility model relates to a structure schematic diagram of an ash bucket in an easy-to-clean powder particle size optimization classifier;

FIG. 5: the utility model relates to a connection relation diagram of an easy-to-clean powder particle size optimization classifier, a flour mill, a feeding machine, 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 inner ash bucket; 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; 14. cleaning the handle; 15. a discharge port; 16. a flange plate; 17. a blade; 18. a base; 19. a support leg; 20. a pulverizer; 21. a feeder; 22. a separator; 23. a dust removal box; 24. a ventilator; 25. a gas regulating valve; 26. rotating the screen; 27. a weighing device; 28. a reinforcement ring; 29. and (4) washing the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the present embodiment provides an easy-to-clean powder particle size optimization classifier, including a casing 2 having a feeding port 1, a detachable top cover 3 is installed on the top of the casing 2, a detachable conical chamber 4 is installed on the bottom of the casing, a conical inner ash bucket 5 is installed in the conical chamber 4 in an embedded manner, a plurality of elutriation holes 29 are opened at a position close to the lower portion of the inner ash bucket 5, at least one air inlet pipe 6 is installed below the conical chamber 4, a control valve 7 is installed on the air inlet pipe 6, a motor 8 is installed 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 casing 2, a discharging chamber 11 is further provided between the top cover 3 and the motor 8, a discharging port 12 is opened at a side surface of the discharging chamber 11.

Wherein, the top of the inner ash bucket 5 is arranged on the top of the conical chamber 4 through a flange 13, a cleaning handle 14 is arranged at the upper position in the inner ash bucket 5, and a discharge hole 15 is arranged below the inner ash bucket 5. The inner ash bucket 5 and the conical chamber 4 are detachable, and a cleaning handle 14 is arranged, so that the cleaning is convenient;

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

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

in order to facilitate stable installation, the shell 2 is provided with supporting legs 19;

when the device is used, the feeding port 1 is sequentially communicated with the flour mill 20 and the feeding machine 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 chamber 4 is sequentially connected with the rotary screen 26 and the weighing device 27.

The working principle is as follows:

the utility model discloses a grader material is carried and is sent power all to come from ventilation blower 24. The material is carried milling machine 20 from feeding machine 21 and is smashed the back, is promoted the utility model discloses a grader, motor 8 rotate through connecting axle 9 drive impeller 10, and the granule that will reach a certain particle diameter through the centrifugal force effect separates out, and this part material passes through 4 lower extreme discharge gates of toper cavity and discharges rotary screen 26, leads to rotary screen 26 to sieve out the middlings that surpasses the requirement particle diameter, and finished product powder rotation sieve 26 discharge gates get into the packing box, packs after measuring through weighing device 27. Meanwhile, a proper amount of secondary fresh air is charged through an air inlet pipeline 6 with a control valve 7, so that part of materials with the particle size smaller than the required particle size are screened out, the materials are conveyed to a separator 22 through an impeller 10 and a discharge chamber 11, most of dust is separated and collected through gas-solid separation of the separator 22, the other part of dust is conveyed to a dust removal box 23 and is filtered and collected by a filter element, clean air is discharged to the atmosphere through a ventilator 24, and the production is finished.

The utility model discloses be equipped with motor 8 and have control flap 7's intake stack 6, through the parameter control to motor 8 and control flap, reach the purpose that the particle diameter was selected separately. The utility model discloses can obtain d10> =10 mu m, the granule of d90< =30 mu m particle diameter parameter. The utility model discloses can realize once only accomplishing the gas-solid separation on line in a production line, need not use extra equipment and place, workman one shot operation can accomplish production, has reduced dust pollution simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an easy preferred grader of clean powder particle diameter, its characterized in that is including the casing of seting up the feed inlet, the 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 ash bucket in the toper, interior ash bucket has seted up a plurality of holes of elutriating by lower position department, toper cavity below is equipped with at least one air-supply line, install control flap on the air-supply line, the top cap top is equipped with the motor, the motor passes through 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.

2. The easy-to-clean powder particle size preference classifier as claimed in claim 1, wherein the top of the inner ash bucket is mounted on the top of the conical chamber through a flange, a cleaning handle is mounted at the upper position in the inner ash bucket, and a discharge port is arranged below the inner ash bucket.

3. The easy-to-clean powder particle size preference classifier according to claim 1 or 2, wherein the impeller comprises a flange plate arranged at the bottom of the connecting shaft, a circle of spaced blades are arranged on the circumference of the flange plate, the diameter of the inner ring at the bottom of each blade is smaller than that of the inner ring at the top of each blade, the bottom of each blade is arranged on the flange plate, and the top of each blade is arranged on the reinforcing ring.

4. The easy-to-clean powder particle size preference classifier according to claim 3, wherein the included angle between the tangential direction of the blade and the flange is 15-20 °.

5. The easy-to-clean powder particle size preference classifier according to claim 1, wherein the bottom of the conical chamber is provided with a base, and the number of the air inlet pipelines is two, and the two air inlet pipelines are both arranged on the base.

6. An easy-to-clean powder particle size preference classifier as claimed in claim 1, wherein the housing is provided with legs.

7. The easy-to-clean powder particle size preference classifier according to claim 1, wherein the feed inlet is sequentially communicated with the pulverizer and the feeder through pipelines, the discharge outlet is sequentially communicated with the separator, the dust removal box and the ventilator through pipelines, and the bottom of the conical chamber is sequentially connected with the rotary screen and the weighing device.

8. An easy-to-clean powder particle size preference classifier as claimed in claim 1 or 7, wherein the top cover is provided with a gas regulating valve.

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