Airflow crushing mechanism

Abstract

The utility model discloses an airflow pulverization mechanism which comprises a pulverization chamber and a material inlet pipe inserted into the middle of the interior of the pulverization chamber, at least three lower pipelines are evenly inserted into the side face of the lower portion of the pulverization chamber, and the three lower pipelines are all located on the diameter of the pulverization chamber. At least three upper pipelines are uniformly inserted into the side surface of the upper part of the crushing chamber, the three upper pipelines are arranged in the tangential direction of a circle extending upwards from the lower end of the material inlet pipe, the lower end of the material inlet pipe is positioned between the heights of the upper pipelines and the lower pipelines, and high-pressure nozzles are mounted at one ends, close to the circle center of the crushing chamber, of the upper pipelines and the lower pipelines. High-pressure gas entering the upper pipeline can form a high-speed vortex with large centrifugal force, the high-speed airflow vortex can drive materials to rotate, in the moving process, particles with large speed and particles with small speed collide strongly, the materials are smashed, meanwhile, due to the fact that the materials are subjected to the centrifugal force, the materials are smashed, and the materials are smashed. Large-particle materials can move on the periphery, and the overall efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of airflow pulverizers, in particular to an airflow pulverizing mechanism. Background Art

[0002] The air flow mill, cyclone separator, dust collector and induced draft fan form a complete set of pulverizing system. After being filtered and dried, the compressed air is sprayed into the pulverizing chamber at high speed through the Laval nozzle. At the intersection of multiple high-pressure airflows, the material is repeatedly collided, rubbed, sheared and pulverized. The pulverized material moves to the classification area with the rising airflow under the suction of the fan. Under the strong centrifugal force generated by the high-speed rotating classification turbine, the coarse and fine materials are separated. The fine particles that meet the particle size requirements enter the cyclone separator and dust collector for collection through the classification wheel, and the coarse particles fall to the pulverizing area for further pulverization. However, the centrifugal force in the classification area needs to be improved to improve the separation efficiency. Utility Model Content

[0003] The utility model aims to provide an air flow pulverizing mechanism to solve the problem in the prior art that the centrifugal force of the grading area needs to be improved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air flow pulverizing mechanism, comprising a pulverizing chamber and a material inlet pipe inserted into the middle of the pulverizing chamber, at least three lower pipes are evenly inserted into the lower side of the pulverizing chamber, and the three lower pipes are all located on the diameter of the pulverizing chamber, at least three upper pipes are evenly inserted into the upper side of the pulverizing chamber, and the three upper pipes are in the direction of the tangent of the circle extending upward from the lower end of the material inlet pipe, the lower end of the material inlet pipe is located between the heights of the upper pipe and the lower pipe, and high-pressure nozzles are installed at one end of the upper pipe and the lower pipe close to the center of the pulverizing chamber.

[0005] Preferably, an annular tube is installed between one end of the upper pipe located outside the pulverizing chamber, an annular tube is installed between one end of the lower pipe located outside the pulverizing chamber, and one side of the annular tube is fixedly connected to a high-pressure air intake pipe.

[0006] Preferably, an upper suction port is fixedly connected to the middle of the top end of the pulverizing chamber, and a grading wheel is installed inside the upper suction port.

[0007] Preferably, an outer bucket is installed at the lower end of the crushing chamber, and an inner cylinder is provided at the lower part of the crushing chamber, an inner bucket is installed at the lower end of the inner cylinder, a gap is provided between the outer bucket and the inner bucket, and the upper end height of the inner cylinder is lower than the height of the upper pipe.

[0008] Preferably, an outer layer feeding pipe is fixed to the lower end of the outer bucket, and an inner layer feeding pipe is installed at the lower end of the inner bucket. The inner layer feeding pipe is L-shaped, and the other end of the inner layer feeding pipe passes through the outer layer feeding pipe.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model has at least three lower pipes evenly inserted into the lower side of the crushing chamber along the diameter direction, and the high-pressure gas is sprayed out through the high-pressure nozzle on the lower pipe, which collides and rubs with the material, and then the high-pressure gas entering from the upper pipe can form a high-speed vortex with relatively large centrifugal force. The high-speed airflow vortex will drive the material to produce a rotational motion. During the motion, particles with a larger speed strongly collide with particles with smaller speed, so that the material is crushed. At the same time, due to the centrifugal force on the material, large particles will move on the periphery, small particles will move on the inner circle, and the standard small particles of the inner part will be sucked upward by the upper suction port, and the overall efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is an overall diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 For this utility model Figure 2 A cutaway view of the middle annular tube;

[0015] Figure 4 It is a top view of the lower pipeline of the utility model;

[0016] Figure 5 It is a top view of the upper pipeline of the utility model.

[0017] In the figure: 1. Crushing chamber; 2. Upper suction port; 3. Classifying wheel; 4. Ring pipe; 5. High-pressure air inlet pipe; 6. Upper pipeline; 7. Lower pipeline; 8. Outer layer discharge pipe; 9. Inner layer discharge pipe; 10. Material inlet pipe; 11. Outer bucket; 12. Inner cylinder; 13. Inner bucket; 14. High-pressure nozzle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 and Figure 2 As shown, in the embodiment of the utility model, an air flow pulverizing mechanism comprises a pulverizing chamber 1 and a material inlet pipe 10 inserted into the middle of the pulverizing chamber 1. The material enters the axial center position of the pulverizing chamber 1 through the material inlet pipe 10 and moves downward due to its own weight.

[0020] Combination Figure 2 and Figure 3 As shown, the middle of the top of the crushing chamber 1 is fixedly connected with an upper suction port 2, and a negative pressure fan is arranged above the upper suction port 2. At least three lower pipes 7 are evenly inserted into the lower side of the crushing chamber 1, and the three lower pipes 7 are all located on the diameter of the crushing chamber 1. A high-pressure nozzle 14 is installed on the lower pipe 7. High-pressure gas is ejected through the high-pressure nozzle 14, and the high-pressure gas collides and rubs with the material to crush the material. The crushed material moves upward due to the negative pressure above.

[0021] Continue to refer to Figure 2 , Figure 3 and Figure 5 At least three upper pipes 6 are evenly inserted into the upper side of the crushing chamber 1, and the three upper pipes 6 are in the tangent direction of the circle extending upward from the lower end of the material inlet pipe 10, and the lower end of the material inlet pipe 10 is located between the heights of the upper pipe 6 and the lower pipe 7. The upper pipe 6 is installed with a high-pressure nozzle 14 at one end close to the center of the crushing chamber 1, and the high-pressure gas entering from the upper pipe 6 can form a high-speed vortex, and the high-speed airflow vortex will drive the material to produce a rotational motion. During the movement, particles with higher speeds collide violently with smaller particles, so that the material is crushed. At the same time, due to the centrifugal force of the material, large particles will move on the periphery, and small particles will move on the inner circle. The small particles in the inner circle will be sucked upward by the upper suction port 2 (a classifying wheel 3 is installed inside the upper suction port 2) and the classifying wheel 3 will be classified by the classifying wheel 3, and the materials that meet the standards can be discharged from the top;

[0022] Combination Figure 2 , Figure 3 and Figure 4 An annular tube 4 is installed between one end of the upper pipe 6 located outside the grinding chamber 1, and an annular tube 4 is installed between one end of the lower pipe 7 located outside the grinding chamber 1. One side of the annular tube 4 is fixedly connected with a high-pressure air intake pipe 5 to realize high-pressure air intake;

[0023] Combination Figure 3 An outer bucket 11 is installed at the lower end of the crushing chamber 1, and an inner cylinder 12 is installed at the lower part of the crushing chamber 1. An inner bucket 13 is installed at the lower end of the inner cylinder 12. A gap is provided between the outer bucket 11 and the inner bucket 13. The upper end height of the inner cylinder 12 is lower than the height of the upper pipe 6. When the larger particles on the periphery gather too much and cannot be crushed anymore, they will reach the gap due to their own weight, while the small particles screened by the grading wheel 3 will pass through the inner cylinder 12 and reach the inside of the inner bucket 13;

[0024] Continue to refer to Figure 3 An outer layer discharge pipe 8 is fixed at the lower end of the outer bucket 11, and the large particle material inside the gap can be discharged through the discharge pipe 8. An inner layer discharge pipe 9 is installed at the lower end of the inner bucket 13. The inner layer discharge pipe 9 is L-shaped, and the other end of the inner layer discharge pipe 9 passes through the outer layer discharge pipe 8. Small particle materials can be discharged through the inner layer discharge pipe 9. The materials discharged from the outer layer discharge pipe 8 and the inner layer discharge pipe 9 can enter again through the material inlet pipe 10, or can be used separately according to the required particle size.

[0025] The working principle and use process of the utility model: when using the device, the material enters the axial position of the crushing chamber 1 through the material inlet pipe 10, and moves downward due to its own weight. The high-pressure gas is ejected through the high-pressure nozzle 14, which collides and rubs with the material, thereby instantly crushing the larger material. The crushed material will move upward due to the negative pressure above, and the high-pressure gas entering from the upper pipeline 6 can form a high-speed vortex. The high-speed airflow vortex will drive the material to produce a rotational motion. During the movement, particles with a larger speed collide strongly with smaller particles, so that the material is crushed. At the same time, due to the centrifugal force on the material, large particles will move on the periphery, and small particles will move on the inner circle. The small particles in the inner circle will be sucked upward by the upper suction port 2 (a grading wheel 3 is installed inside the upper suction port 2) and the grading wheel 3 will be graded by the grading wheel 3. The material that meets the standard can be discharged from the top. When the larger particles on the periphery gather more and can no longer be crushed, they will reach the gap due to their own weight, and the small particles screened by the grading wheel 3 will pass through the inner cylinder 12 to the inside of the inner bucket 13.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air flow pulverizing mechanism, comprising a pulverizing chamber (1) and a material inlet pipe (10) inserted into the middle of the pulverizing chamber (1), characterized in that: At least three lower pipes (7) are uniformly inserted into the lower side of the pulverizing chamber (1), and the three lower pipes (7) are all located on the diameter of the pulverizing chamber (1). At least three upper pipes (6) are uniformly inserted into the upper side of the pulverizing chamber (1), and the three upper pipes (6) are in the direction of the tangent line of the circle extending upward from the lower end of the material inlet pipe (10). The lower end of the material inlet pipe (10) is located between the heights of the upper pipe (6) and the lower pipe (7). High-pressure nozzles (14) are installed at one end of the upper pipe (6) and the lower pipe (7) close to the center of the pulverizing chamber (1).

2. The air flow pulverizing mechanism according to claim 1, characterized in that: An annular tube (4) is installed between one end of the upper pipe (6) located outside the pulverizing chamber (1), and an annular tube (4) is installed between one end of the lower pipe (7) located outside the pulverizing chamber (1), and one side of the annular tube (4) is fixedly connected to a high-pressure air intake pipe (5).

3. The air flow pulverizing mechanism according to claim 2, characterized in that: An upper suction port (2) is fixedly connected to the middle of the top end of the pulverizing chamber (1), and a grading wheel (3) is installed inside the upper suction port (2).

4. The air flow pulverizing mechanism according to claim 3, characterized in that: An outer bucket (11) is installed at the lower end of the pulverizing chamber (1), and an inner cylinder (12) is provided at the lower part of the pulverizing chamber (1). An inner bucket (13) is installed at the lower end of the inner cylinder (12). A gap is provided between the outer bucket (11) and the inner bucket (13). The upper end of the inner cylinder (12) is lower than the height of the upper pipe (6).

5. The air flow pulverizing mechanism according to claim 4, characterized in that: An outer layer discharge pipe (8) is fixed at the lower end of the outer bucket (11), and an inner layer discharge pipe (9) is installed at the lower end of the inner bucket (13). The inner layer discharge pipe (9) is L-shaped, and the other end of the inner layer discharge pipe (9) passes through the outer layer discharge pipe (8).

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