An online fractionating and pulverizing device

Abstract

The utility model relates to an online grading powder crushing device, including feeding conveyor belt, crushing device, powder transmission mechanism, and powder screening mechanism, crushing device is connected with powder screening mechanism through powder transmission mechanism, powder screening mechanism includes screening bucket, driving mechanism, feeding hopper, material distributing subassembly and top shell, the bottom of screening bucket is equipped with coarse powder discharge gate, and coarse powder discharge gate is connected with the discharge buffer shell, and the buffer assembly is equipped in the discharge buffer shell. The utility model has the advantages of: (1) setting up powder screening mechanism, realizing the screening of coarse particle and fine particle powder material, putting the screened coarse particle powder material into the crushing device again, reducing the material amount of repeated powder crushing, improving the powder crushing efficiency, (2) feeding conveyor belt and powder transmission mechanism can replace artificial transmission material, improve the material conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coating powder processing technology, and in particular to an online grading and crushing device. Background Technology

[0002] The processing of coating powder typically includes steps such as raw material drying, extrusion into sheets, crushing, and grinding. After the raw material is extruded into sheets, the sheets need to be crushed and then ground. However, before crushing, the powder needs to be repeatedly poured manually into the crushing device, resulting in low material transfer efficiency. Furthermore, the particle size after crushing is inconsistent, with many coarse particles and even lumps appearing. It is difficult to achieve the required particle size in a single crushing operation for sheet materials, requiring repeated crushing of all sheet materials before they can be fed into high-precision grinding equipment for finishing, resulting in low crushing efficiency.

[0003] Therefore, the structure of the powder crushing production line needs further improvement to enhance crushing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an online grading and crushing device that can improve crushing efficiency.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides an online grading and crushing device, including a feeding conveyor belt, a crushing device, a powder conveying mechanism, and a powder screening mechanism;

[0006] The feeding conveyor belt is obliquely upward on one side of the crushing device;

[0007] The pulverizing device is connected to the powder sieving mechanism via the powder conveying mechanism;

[0008] The powder screening mechanism includes a screening barrel, a drive mechanism, a feeding funnel, a distributing component, and a top shell. The top shell is connected to the top of the screening barrel, and has a feed inlet at the top and a fine powder outlet on its side wall. The drive mechanism is connected to the distributing component, which is located inside the screening barrel. The screening barrel has an air inlet, and the distributing component is located between the air inlet and the fine powder outlet. The feeding funnel is located below the feed inlet and is connected to the distributing component.

[0009] The bottom of the screening barrel is provided with a coarse powder outlet, which is connected to a discharge buffer shell. The discharge buffer shell is provided with a buffer assembly, which includes a rotating shaft and several blades. The rotating shaft is rotatably connected to the discharge buffer shell, and the several blades are arranged in a ring array on the rotating shaft.

[0010] As a further improvement to the utility model, the feeding conveyor belt is equipped with baffles.

[0011] Furthermore, protective plates are provided on both sides of the feeding conveyor belt.

[0012] As a further improvement to the utility model, the feed inlet of the outer shell of the crushing device is provided with a baffle.

[0013] As a further improvement to the utility model, the bottom of the buffer assembly is connected to a guide tube.

[0014] As a further improvement of the utility model, the material distribution component includes a grading wheel and a raw material dispersion disc. The grading wheel is connected to the driving mechanism. The grading wheel has several impellers arranged in a circular array. The raw material dispersion disc is connected to the lower part of the grading wheel. A material transfer channel is provided between the raw material dispersion disc and the grading wheel.

[0015] This utility model discloses an online grading and crushing device. Flake-shaped materials are conveyed from a feeding conveyor belt to a crushing device for primary crushing. The crushed powder is then conveyed to a powder screening mechanism via a powder conveying mechanism. The powder conveying mechanism can be an existing fan and pipeline, which is connected to the discharge port of the crushing device and the inlet of the powder screening mechanism. The powder is fed into a screening drum. Fine particles are discharged from the fine powder outlet and collected for further fine grinding, while coarse particles fall from the coarse powder outlet, are collected, and then fed back into the crushing device for further crushing. As the rotational speed of the grading wheel increases, the centrifugal force field around the wheel increases, and the airflow curvature changes. Under this increased centrifugal force, coarse particles are thrown against the drum wall, achieving effective grading. The rotational speed and airflow of the grading wheel can be adjusted to regulate the size of the graded particles.

[0016] The advantages of this online grading and grinding device compared to existing technologies are as follows:

[0017] (1) Set up a powder screening mechanism to screen coarse and fine powders, and put the screened coarse powders back into the crushing device to reduce the amount of material to be repeatedly crushed and improve crushing efficiency.

[0018] (2) The feeding conveyor belt and powder conveying mechanism can replace manual material conveying and improve material conveying efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an online grading and crushing device according to the present invention;

[0020] Figure 2 This is a partial structural cross-sectional view of the powder screening mechanism;

[0021] Figure 3 This is a schematic diagram of the material distribution component structure;

[0022] Figure 4 This is a schematic diagram of the buffer component structure. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, the present invention provides an online grading and crushing device, which includes a feeding conveyor belt 1, a crushing device 2, a powder conveying mechanism 3, and a powder screening mechanism 4.

[0025] The feeding conveyor belt 1 is inclined upward on one side of the crushing device 2. The crushing device 2 can be an existing toothed roller crusher. Since it is necessary to feed the flaky material from above the toothed roller crusher, the flaky material is fed into the crushing device 2 by the inclined feeding conveyor belt 1.

[0026] The feeding conveyor belt 1 is equipped with baffles 11, which serve to position the sheet material being transported at an angle upwards, preventing the sheet material from sliding up and down the feeding conveyor belt 1 and affecting the transmission effect.

[0027] The feeding conveyor belt 1 is equipped with protective plates 12 on both sides. The protective plates 12 can block sheet materials and prevent sheet materials from sliding out from both sides of the feeding conveyor belt 1.

[0028] The feed inlet 21 of the outer shell of the crushing device 2 is equipped with a baffle 22. The sheet material enters the crushing device 2 through the baffle 22. The baffle 22 does not affect the feeding and can also block the dust generated when crushing the material in the crushing device 2.

[0029] The crushing device 2 is connected to the powder screening mechanism 4 via the powder conveying mechanism 3;

[0030] like Figure 2 As shown, the powder screening mechanism 4 includes a screening barrel 41, a drive mechanism 42, a feeding funnel 43, a distributing component 44, and a top shell 45. The top shell 45 is connected to the top of the screening barrel 41, and the top of the top shell 45 is provided with a feed inlet 452. The side wall of the top shell 45 is provided with a fine powder outlet 451. The drive mechanism 42 is connected to the distributing component 44, which is located inside the screening barrel 41. The screening barrel 41 is provided with an air inlet 411, and the distributing component 44 is located between the air inlet 411 and the fine powder outlet 451. The feeding funnel 43 is located below the feed inlet 452 and is connected to the distributing component 44.

[0031] The bottom of the screening barrel 41 is provided with a coarse powder outlet 412, which is connected to a discharge buffer shell 46. A buffer assembly 47 is provided inside the discharge buffer shell 46. Figure 4As shown, the buffer assembly 47 includes a rotating shaft 471 and several blades 472. The rotating shaft 471 is rotatably connected to the discharge buffer shell 46, and the blades 472 are arranged in a ring array on the rotating shaft 471. The coarse powder falling into the coarse powder discharge port 412 is buffered by the blades 472, which can reduce the agglomeration and accumulation of coarse powder and prevent blockage of the coarse powder discharge port 412.

[0032] The bottom of the buffer assembly 47 is connected to a guide tube 48. The coarse powder is guided by the guide tube 48 and falls into a uniformly collected material bag, which prevents the coarse powder from being blown away by the rotating blades 472, causing the coarse powder to scatter on the ground and affecting the collection of coarse powder.

[0033] like Figure 3 As shown, the material distribution component 44 includes a classifying wheel 441 and a raw material dispersing disk 442. The classifying wheel 441 is connected to the drive mechanism 42. The classifying wheel 441 has several impellers 443 arranged in a ring array. The raw material dispersing disk 442 is connected to the bottom of the classifying wheel 441. A material transfer channel 444 is provided between the raw material dispersing disk 442 and the classifying wheel 441.

[0034] The drive mechanism 42 can be an existing motor and drive shaft assembly. The drive shaft is connected to the classifying wheel 441, driving the classifying wheel 441 to rotate at high speed. Powder is input from the feed inlet 452 and falls along the feeding funnel 4 into the raw material dispersion disc 442 below. The raw material dispersion disc 442 rotates at high speed with the classifying wheel 441, throwing the powder out from the conveying channel 444. The air inlet 411 is connected to an external air pipe, and the airflow enters the barrel from the air inlet 411. Due to the high-speed rotation of the classifying wheel 441, a negative pressure zone is formed at its lower part, so that the airflow has component velocities in both the axial and circumferential directions. The powder is subjected to the interaction of the centripetal pull force, centrifugal force, and gravity of the airflow. Fine particles of powder are subjected to greater airflow pull force and are discharged from the fine powder outlet 451 with the airflow. Coarse particles of powder are greatly affected by their own weight and sink to the bottom coarse powder outlet 412 and are discharged, thus realizing the classification of coarse and fine particles of material.

[0035] This utility model discloses an online grading and crushing device. Flake materials are conveyed from a feeding conveyor belt 1 to a crushing device 2 for primary crushing. The crushed powder is then conveyed to a powder screening mechanism 4 via a powder conveying mechanism 3. The powder conveying mechanism 3 can be an existing fan and pipeline, which is connected to the discharge port of the crushing device 2 and the inlet 452 of the powder screening mechanism 4. The powder is fed into a screening drum 41. Fine particles are discharged from the fine powder outlet 451 and collected for further fine grinding, while coarse particles fall from the coarse powder outlet 412, are collected, and then fed back into the crushing device 2 for further crushing. As the rotational speed of the grading wheel 441 increases, the centrifugal force field around the wheel increases, and the airflow curvature changes. Under this increased centrifugal force, coarse particles are thrown against the drum wall, achieving effective grading. The rotational speed and airflow of the grading wheel 441 can be adjusted to regulate the size of the graded particles.

[0036] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An online grading and grinding device, characterized in that, It includes a feeding conveyor belt, a crushing device, a powder conveying mechanism, and a powder screening mechanism; The feeding conveyor belt is obliquely upward on one side of the crushing device; The pulverizing device is connected to the powder sieving mechanism via the powder conveying mechanism; The powder screening mechanism includes a screening barrel, a drive mechanism, a feeding funnel, a distributing component, and a top shell. The top shell is connected to the top of the screening barrel, and has a feed inlet at the top and a fine powder outlet on its side wall. The drive mechanism is connected to the distributing component, which is located inside the screening barrel. The screening barrel has an air inlet, and the distributing component is located between the air inlet and the fine powder outlet. The feeding funnel is located below the feed inlet and is connected to the distributing component. The bottom of the screening barrel is provided with a coarse powder outlet, which is connected to a discharge buffer shell. The discharge buffer shell is provided with a buffer assembly, which includes a rotating shaft and several blades. The rotating shaft is rotatably connected to the discharge buffer shell, and the several blades are arranged in a ring array on the rotating shaft.

2. The online grading and grinding device as described in claim 1, characterized in that, The feeding conveyor belt is equipped with baffles.

3. An online grading and grinding device as described in claim 1 or 2, characterized in that, Protective plates are provided on both sides of the feeding conveyor belt.

4. The online grading and grinding device as described in claim 1, characterized in that, The feed inlet of the outer shell of the crushing device is equipped with a baffle.

5. The online grading and grinding device as described in claim 1, characterized in that, The bottom of the buffer assembly is connected to a guide tube.

6. The online grading and grinding device as described in claim 1, characterized in that, The material distribution assembly includes a grading wheel and a raw material dispersing disc. The grading wheel is connected to the drive mechanism. The grading wheel has several impellers arranged in a circular array. The raw material dispersing disc is connected to the lower part of the grading wheel. A material transfer channel is provided between the raw material dispersing disc and the grading wheel.

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