Fluidized bed airflow crushing and grading machine structure

Abstract

The utility model discloses a fluidized bed airflow crushing grader structure, which relates to the technical field of crushers and comprises a blanking hopper, the lower surface of the blanking hopper is fixedly connected with a primary crushing chamber, a first channel is arranged at the joint of the blanking hopper and the primary crushing chamber, and the lower surface of the primary crushing chamber is fixedly connected with a connecting channel. A feeding pipeline is fixedly connected to the lower surface of the connecting channel, a second channel is arranged at the joint of the connecting channel and the feeding pipeline, a second-stage crushing chamber is arranged on the right side face of the feeding pipeline, the discharging hopper is communicated with the second-stage crushing chamber, a grader body is installed on the inner top face of the second-stage crushing chamber, and a discharging pipe is arranged on the surface of the grader body. The discharging pipe penetrates through the second-stage crushing chamber, an electromagnetic valve is installed on the surface of the right side of the discharging pipe, and a nozzle is arranged on the surface of the lower portion of the second-stage crushing chamber, and through the arrangement of the primary crushing chamber, the feeding pipeline, the fixing rods and the crushing rollers, the purpose of improving the working efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushers, in particular to a structure of a fluidized bed air classifier crusher. Background Technique

[0002] With the rapid development of high-end technologies and the nanomaterial industry, the pace of traditional industrial technologies has been accelerating continuously. The demand for the output and quality of ultrafine powder products (generally, powders with a particle size less than 10 μm are called ultrafine powders) in all walks of life has been increasing and improving. There is an urgent need for matching ultrafine grinding technologies and equipment. Air crushing has been widely used due to its characteristics such as large production capacity, high degree of automation, fine product particle size, narrow particle size distribution, high purity, large activity, and good dispersibility. The fluidized bed air classifier crusher is the leading model of current air crushers, with obvious advantages compared with other crushing equipment, representing the mainstream direction of air crushing equipment, and is widely used in special ceramics, semiconductors, graphite, pigments, medicine, powdered food, cosmetics, etc.

[0003] For the existing fluidized bed air classifier crusher, during use, since the atmospheric pressure in the crushing chamber is higher than the standard atmospheric pressure during the working process, the main machine needs to be shut down every time when discharging materials, which has the disadvantage of slow working efficiency. Moreover, when the crushed particles are larger, the crushing time will be increased, and the larger particles are not easy to crush, which has the disadvantage of slow crushing speed. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a structure of a fluidized bed air classifier crusher, which solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model is realized by the following technical solutions: A fluidized bed air flow crushing and grading machine structure includes a feeding hopper. The lower surface of the feeding hopper is fixedly connected with a primary crushing chamber. A second motor is installed on the left side surface of the primary crushing chamber. The output end of the second motor is fixedly connected with a second rotating shaft. Bearings are arranged at the joints of the two end surfaces of the second rotating shaft and the primary crushing chamber. Crushing rollers are fixedly connected to the surface of the second rotating shaft. The upper surface of the feeding hopper is fixedly connected with a fixing plate. A first motor is installed on the upper surface of the fixing plate. The output end of the first motor is fixedly connected with a first rotating shaft. A fixing rod is fixedly connected to the outer surface of the lower part of the first rotating shaft. The fixing rod is arranged above a first channel. A first channel is arranged at the joint of the feeding hopper and the primary crushing chamber. The lower surface of the primary crushing chamber is fixedly connected with a connecting channel. The lower surface of the connecting channel is fixedly connected with a feeding pipeline. A third motor is installed on the left side surface of the feeding pipeline. The output end of the third motor is fixedly connected with a third rotating shaft. Auger blades are fixedly connected to the surface of the third rotating shaft. A secondary crushing chamber is arranged on the right side surface of the feeding pipeline. The feeding hopper communicates with the secondary crushing chamber. A grading machine main body is installed on the inner top surface of the secondary crushing chamber.

[0008] Optionally, a small gap is left between the auger blades and the inner wall of the feeding pipeline. A second channel is arranged at the joint of the connecting channel and the feeding pipeline.

[0009] Optionally, a second motor is installed on the left side surface of the primary crushing chamber. The output end of the second motor is fixedly connected with a second rotating shaft. Bearings are arranged at the joints of the two end surfaces of the second rotating shaft and the primary crushing chamber. Crushing rollers are fixedly connected to the surface of the second rotating shaft.

[0010] Optionally, the numbers of the second motor, the second rotating shaft and the crushing rollers are all two, and they are symmetrically distributed.

[0011] Optionally, a discharge pipe is arranged on the surface of the grading machine main body. The discharge pipe penetrates through the secondary crushing chamber. A solenoid valve is installed on the surface of the right side of the discharge pipe. Nozzles are arranged on the surface of the lower part of the secondary crushing chamber.

[0012] Optionally, the number of the nozzles is three, and they are arranged in an array.

[0013] (III) Beneficial effects

[0014] The utility model provides a fluidized bed air flow crushing and grading machine structure, which has the following beneficial effects:

[0015] 1. The structure of a fluidized bed air jet mill and classifier has the effect of improving work efficiency through the settings of the primary crushing chamber, feeding pipeline, fixed rod and crushing rollers. When in use, the raw materials to be classified are poured into the hopper. During the feeding process of the raw materials in the hopper, turn on the first motor, the second motor and the third motor. Drive the first rotating shaft and the fixed rod to rotate through the first motor. Since the fixed rod is arranged below the hopper, the rotation of the fixed rod prevents the raw materials from clogging the discharge pipe during rapid feeding, playing a role in preventing raw material blockage. After the raw materials enter the primary crushing chamber through the first channel, under the action of the two second motors, the two crushing rollers rotate synchronously inward, thereby primarily crushing the passing raw materials. The raw materials after primary crushing enter the feeding pipeline through the second channel. Under the action of the third motor, drive the third rotating shaft and the auger blades to rotate, thereby conveying the raw materials after primary crushing to the secondary crushing chamber. After the raw materials after primary crushing enter the secondary crushing chamber, the ultra-high sound airflow formed by spraying and converging the compressed air that has been frozen, filtered and dried through three nozzles is injected into the secondary crushing chamber. The raw materials are instantaneously crushed when they collide at the center of the high-speed airflow intersection, causing the raw materials to form powder. The powder enters the classifier main body through the inlet at the lower part of the classifier main body along with the airflow. Under the action of the centrifugal force generated by the high-speed rotating classification wheel and the centripetal force generated by the airflow, the powder particles are separated by thickness. The fine particles that meet the requirements enter the discharge pipe through the gaps between the blades of the classification wheel, while the coarse particles are thrown out by the classification wheel and fall to the lower part of the secondary crushing chamber, and are crushed again. During this process as the classification progresses, raw materials can be continuously conveyed into the secondary crushing chamber through the feeding pipeline. Under the action of the rotating fixed rod, raw material blockage is avoided. At the same time, the conveyed raw materials are primarily crushed under the action of the crushing rollers, making the subsequent crushing process faster, greatly reducing the crushing time, and thus achieving the purpose of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the front view section of the present utility model;

[0018] Figure 3 is of the present utility model Figure 2 structural schematic diagram at A in;

[0019] Figure 4 is a structural schematic diagram of the top view section of the primary crushing chamber of the present utility model.

[0020] In the figure: 1. blanking hopper; 2. primary crushing chamber; 3. connecting channel; 4. feeding pipeline; 5. fixing plate; 6. first motor; 7. first rotating shaft; 8. fixing rod; 9. first channel; 10. second motor; 11. second rotating shaft; 12. crushing roller; 13. second channel; 14. third motor; 15. third rotating shaft; 16. auger blade; 17. secondary crushing chamber; 18. classifier main body; 19. discharge pipe; 20. solenoid valve; 21. nozzle. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Embodiment 1

[0023] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a fluidized bed air flow crushing and classification machine structure, including a blanking hopper 1, the lower surface of the blanking hopper 1 is fixedly connected with a primary crushing chamber 2, a first channel 9 is arranged at the connection between the blanking hopper 1 and the primary crushing chamber 2, the lower surface of the primary crushing chamber 2 is fixedly connected with a connecting channel 3, the lower surface of the connecting channel 3 is fixedly connected with a feeding pipeline 4, a second channel 13 is arranged at the connection between the connecting channel 3 and the feeding pipeline 4, a secondary crushing chamber 17 is arranged on the right side surface of the feeding pipeline 4, the blanking hopper 1 communicates with the secondary crushing chamber 17, a classifier main body 18 is installed on the inner top surface of the secondary crushing chamber 17, a discharge pipe 19 is arranged on the surface of the classifier main body 18, the discharge pipe 19 penetrates through the secondary crushing chamber 17, a solenoid valve 20 is installed on the surface on the right side of the discharge pipe 19, nozzles 21 are arranged on the surface at the lower part of the secondary crushing chamber 17, the upper surface of the blanking hopper 1 is fixedly connected with a fixing plate 5, a first motor 6 is installed on the upper surface of the fixing plate 5, the output end of the first motor 6 is fixedly connected with a first rotating shaft 7, a fixing rod 8 is fixedly connected to the outer surface at the lower part of the first rotating shaft 7, the fixing rod 8 is arranged above the first channel 9, a second motor 10 is installed on the left side surface of the primary crushing chamber 2, the output end of the second motor 10 is fixedly connected with a second rotating shaft 11, bearings are arranged at the connections between the two end surfaces of the second rotating shaft 11 and the primary crushing chamber 2, a crushing roller 12 is fixedly connected to the surface of the second rotating shaft 11, the numbers of the second motor 10, the second rotating shaft 11 and the crushing roller 12 are all two and are symmetrically distributed, a third motor 14 is installed on the left side surface of the feeding pipeline 4, the output end of the third motor 14 is fixedly connected with a third rotating shaft 15, an auger blade 16 is fixedly connected to the surface of the third rotating shaft 15, a small gap is left between the auger blade 16 and the inner wall of the feeding pipeline 4, the number of the nozzles 21 is three and is arranged in an array.

[0024] For the purpose of improving work efficiency, during use, the graded raw materials are poured into the feeding hopper 1. When the raw materials in the feeding hopper 1 are being fed, the first motor 6, the second motor 10, and the third motor 14 are turned on. The first motor 6 drives the first rotating shaft 7 and the fixed rod 8 to rotate. Since the fixed rod 8 is arranged below the feeding hopper 1, the rotation of the fixed rod 8 prevents the raw materials from being fed too quickly and blocking the discharge pipe 19, thus playing a role in preventing the raw materials from being blocked. After the raw materials enter the primary crushing chamber 2 through the first channel 9, under the action of the two second motors 10, the two crushing rollers 12 rotate synchronously inward, thereby primarily crushing the passing raw materials. The raw materials after primary crushing enter the feeding pipe 4 through the second channel 13. Under the action of the third motor 14, the third rotating shaft 15 and the auger blades 16 are driven to rotate, thereby conveying the raw materials after primary crushing to the secondary crushing chamber 17. After the raw materials after primary crushing enter the secondary crushing chamber 17, the ultra-high sound airflow formed by injecting the compressed air that has been frozen, filtered, and dried through three nozzles 21 is injected into the secondary crushing chamber 17. The raw materials collide and are instantaneously crushed at the center of the intersection of the high-speed airflow, causing the raw materials to form powder. The powder enters the classifier main body 18 through the inlet at the lower part of the classifier main body 18 along with the airflow. Under the action of the centrifugal force generated by the high-speed rotating classifier wheel and the centripetal force generated by the airflow, the powder particles are separated according to their fineness. The fine particles that meet the requirements enter the discharge pipe 19 through the gaps between the classifier wheel blades, while the coarse particles are thrown out by the classifier wheel and fall to the lower part of the secondary crushing chamber 17, and are crushed again. During this process, as the classification progresses, raw materials can be continuously conveyed into the secondary crushing chamber 17 through the feeding pipe 4. Under the action of the rotating fixed rod 8, the raw materials are prevented from being blocked. At the same time, the conveyed raw materials are primarily crushed under the action of the crushing rollers 12, making the subsequent crushing process faster and greatly reducing the crushing time, thereby achieving the purpose of improving work efficiency.

[0025] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A fluidized bed airflow pulverizing and classifying machine structure, comprising a lower hopper (1), characterized in that: The lower surface of the lower hopper (1) is fixedly connected to a primary crushing chamber (2); a second motor (10) is installed on the left side of the primary crushing chamber (2); the output end of the second motor (10) is fixedly connected to a second rotating shaft (11); bearings are provided at the connection between the two end surfaces of the second rotating shaft (11) and the primary crushing chamber (2); a crushing roller (12) is fixedly connected to the surface of the second rotating shaft (11); a fixing plate (5) is fixedly connected to the upper surface of the lower hopper (1); a first motor (6) is installed on the upper surface of the fixing plate (5); the output end of the first motor (6) is fixedly connected to a first rotating shaft (7); a fixing rod (8) is fixedly connected to the outer surface of the lower part of the first rotating shaft (7); the fixing rod (8) is arranged above the first channel (9); a first channel (9) is arranged at the connection between the lower hopper (1) and the primary crushing chamber (2); a connecting channel (3) is fixedly connected to the lower surface of the primary crushing chamber (2); a feeding pipe (4) is fixedly connected to the lower surface of the connecting channel (3); A third motor (14) is installed on the left side of the feeding pipe (4); a third rotating shaft (15) is fixedly connected to the output end of the third motor (14); an auger blade (16) is fixedly connected to the surface of the third rotating shaft (15); a secondary crushing chamber (17) is arranged on the right side of the feeding pipe (4); the lower hopper (1) is in communication with the secondary crushing chamber (17); and a classifier body (18) is installed on the inner top surface of the secondary crushing chamber (17).

2. The fluidized bed airflow pulverizing and classifying machine structure according to claim 1 is characterized in that: A small gap is left between the auger blade (16) and the inner wall of the feeding pipe (4), and a second channel (13) is provided at the connection between the connecting channel (3) and the feeding pipe (4).

3. The fluidized bed airflow pulverizing and classifying machine structure according to claim 1 is characterized in that: The number of the second motor (10), the second rotating shaft (11) and the crushing roller (12) are all two, and they are symmetrically distributed.

4. The fluidized bed airflow pulverizing and classifying machine structure according to claim 1 is characterized in that: A discharge pipe (19) is provided on the surface of the classifier body (18), the discharge pipe (19) passes through the secondary crushing chamber (17), a solenoid valve (20) is installed on the right surface of the discharge pipe (19), and a nozzle (21) is provided on the lower surface of the secondary crushing chamber (17).

5. The fluidized bed airflow pulverizing and classifying machine structure according to claim 4 is characterized in that: The number of the nozzles (21) is three and they are distributed in an array.

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