Jet mill with wear-resistant interior

Abstract

The jet mill comprises a bottom positioning frame, a crushing box body is fixedly installed on the bottom positioning frame, the bottom of the crushing box body is open, a bearing bottom plate is arranged at the bottom of the bottom positioning frame, a vertical hydraulic cylinder is fixedly installed on the bearing bottom plate, and a lifting chassis is fixedly installed at the output end of the vertical hydraulic cylinder; a first wear-resistant ring plate and a second wear-resistant ring plate are arranged on the top surface of the lifting base plate, a positioning ring strip is arranged on the outer edge of the top surface of the lifting base plate, and an elastic positioning piece is arranged at the bottom of the lifting base plate. And then the lifting chassis is pushed to the bottommost part of the crushing box body, and a replaceable and detachable internal structure with relatively high wear resistance is formed in the crushing box body, so that the inner wall of the jet mill is prevented from being worn, and the applicability of the jet mill is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air classifiers, in particular to an air classifier with internal abrasion prevention. Background Art

[0002] Air classification is to accelerate dry and oil-free compressed air or superheated steam into a supersonic air flow through a Laval nozzle. The ejected high-speed jet drives the material to move at a high speed in the pulverizing chamber of the air classifier, so that the particles collide and rub against each other and are pulverized; the pulverized material reaches the classification area along with the air flow. The material meeting the fineness requirement is finally collected by a collector, and the material not meeting the requirement returns to the pulverizing chamber to continue pulverizing until the required fineness is reached and is collected.

[0003] The friction and collision of the air-classified material particles against the inner wall of the pulverizing chamber are the main factors for the wear of the inner wall of the pulverizing chamber. Existing air classifiers can use inner walls of different materials for the pulverization of different materials to improve economy. However, since the material of the inner wall of the air classifier cannot be changed, the application range of the air classifier is limited.

[0004] Therefore, aiming at the deficiencies of the existing technology, it is very necessary to provide an air classifier with internal abrasion prevention to solve the deficiencies of the existing technology. Content of the Utility Model

[0005] The purpose of the utility model is to avoid the deficiencies of the existing technology and provide an air classifier with internal abrasion prevention. The air classifier with internal abrasion prevention uses a vertical hydraulic cylinder and a lifting chassis to lift a first wear-resistant ring plate and a second wear-resistant ring plate into the inside of the pulverizing box body at one time, and then pushes the lifting chassis to the bottom of the pulverizing box body, forming a replaceable and detachable internal structure with strong wear resistance inside the pulverizing box body, preventing the inner wall of the air classifier from being worn, and improving the applicability of the air classifier.

[0006] The above object of the utility model is achieved by the following technical means.

[0007] Provide an air classifier with internal abrasion prevention, including a bottom positioning frame, a pulverizing box body is fixedly installed on the bottom positioning frame, the bottom of the pulverizing box body is open, a supporting bottom plate is arranged at the bottom of the bottom positioning frame, a vertical hydraulic cylinder is fixedly installed on the supporting bottom plate, the output end of the vertical hydraulic cylinder is fixedly installed with a lifting chassis, a positioning ring strip is arranged at the outer edge of the top surface of the lifting chassis, and an elastic positioning member is arranged at the bottom of the lifting chassis;

[0008] Inside the crushing box body, a first wear-resistant ring plate and a second wear-resistant ring plate are installed in an actively fitting manner. The first wear-resistant ring plate and the second wear-resistant ring plate are simultaneously clamped and matched with the lifting chassis. Two positioning bolts are spirally installed on the side wall of the crushing box body. A first positioning groove is opened on the outer side wall of the first wear-resistant ring plate, and a second positioning groove is opened on the second wear-resistant ring plate. The first positioning groove and the second positioning groove are spirally matched with the positioning bolts;

[0009] A high-pressure air flow pipe is connected and installed on the side wall of the crushing box body. An air flow through hole is opened on the side wall of the second wear-resistant ring plate. The air flow through hole and the high-pressure air flow pipe are movably corresponding. The lifting chassis is clamped and matched with the bottom of the crushing box body.

[0010] Specifically, a docking clamping groove is provided at the bottom of the crushing box body. The docking clamping groove is clamped and matched with the positioning ring strip. Positioning holes are opened at the bottoms of the first wear-resistant ring plate and the second wear-resistant ring plate. The positioning holes are movably matched with the elastic positioning members.

[0011] Preferably, the elastic positioning member includes an outer cylinder fixedly installed at the bottom of the lifting chassis. A positioning insertion column is vertically and elastically installed inside the outer cylinder. The positioning insertion column movably passes through the lifting chassis. The positioning insertion column is movably matched with the positioning hole. An adjustment groove is opened on the outer cylinder. An adjustment column is installed on the positioning insertion column. The adjustment column is slidably matched with the adjustment groove.

[0012] Specifically, a grading roller is rotatably installed at the top of the crushing box body. One end of the grading roller is connected to the driving motor, and the other end is connected to the cyclone separator.

[0013] Furthermore, a feed hopper is connected and installed at the top of the crushing box body.

[0014] In the present utility model, during the production process, the first wear-resistant ring plate and the second wear-resistant ring plate are supported and sent into the inside of the crushing box body at one time through the vertical hydraulic cylinder and the lifting chassis, and then the lifting chassis is pushed to the bottom of the crushing box body, forming a replaceable and detachable internal structure with strong wear resistance inside the crushing box body, preventing the inner wall of the air flow crusher from being worn, and improving the applicability of the air flow crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model is further described with the aid of the attached drawings, but the content in the drawings does not constitute any limitation to the present utility model.

[0016] Figure 1 is a structural schematic diagram of an air flow crusher with internal wear prevention of the present utility model Figure 1 .

[0017] Figure 2 is a structural schematic diagram of an air flow crusher with internal wear prevention of the present utility model Figure 2 .

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the first wear-resistant ring plate of an airflow pulverizer with internal wear prevention of the present utility model.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the second wear-resistant ring plate of an airflow pulverizer with internal wear prevention of the present utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the lifting chassis of an airflow pulverizer with internal wear prevention of the present utility model.

[0021] Figure 6 It is a three-dimensional schematic diagram of the elastic positioning member of an airflow pulverizer with internal wear prevention of the present utility model.

[0022] Figure 7 It is an enlarged schematic diagram at position A of an airflow pulverizer with internal wear prevention of the present utility model.

[0023] From Figures 1 to 7 it includes:

[0024] 1. Bottom positioning frame;

[0025] 2. Pulverizing box body;

[0026] 3. Supporting bottom plate;

[0027] 4. Vertical hydraulic cylinder;

[0028] 5. Lifting chassis;

[0029] 6. Positioning ring strip;

[0030] 7. Elastic positioning member;

[0031] 8. First wear-resistant ring plate;

[0032] 9. Second wear-resistant ring plate;

[0033] 10. Positioning bolt;

[0034] 11. First positioning groove;

[0035] 12. Second positioning groove;

[0036] 13. High-pressure air flow pipe;

[0037] 14. Air flow through hole;

[0038] 15. Docking card slot;

[0039] 16. Positioning hole;

[0040] 17. Outer cylinder body;

[0041] 18. Positioning insertion column;

[0042] 19. Adjustment groove;

[0043] 20. Adjustment column;

[0044] 21. Grading roller;

[0045] 22. Driving motor;

[0046] 23. Cyclone separator;

[0047] 24. Feed hopper. Specific embodiments

[0048] The present utility model will be further described in conjunction with the following embodiments.

[0049] Embodiment 1.

[0050] As Figures 1 - 7 shown, an airflow pulverizer with internal anti-wear includes a bottom positioning frame 1, a pulverizing box body 2 is fixedly installed on the bottom positioning frame 1, the bottom of the pulverizing box body 2 is open, a supporting bottom plate 3 is provided at the bottom of the bottom positioning frame 1, a vertical hydraulic cylinder 4 is fixedly installed on the supporting bottom plate 3, the output end of the vertical hydraulic cylinder 4 is fixedly installed with a lifting chassis 5, a positioning ring strip 6 is provided at the outer edge of the top surface of the lifting chassis 5, and an elastic positioning member 7 is provided at the bottom of the lifting chassis 5.

[0051] This application is used for airflow pulverization of materials. First, the pulverizing box body 2 is fixed through the bottom positioning frame 1, and at the same time, a space is left at the bottom of the pulverizing box body 2. At the same time, the vertical hydraulic cylinder 4 is fixed through the supporting bottom plate 3. The output of the vertical hydraulic cylinder 4 can drive the lifting of the lifting chassis 5. When anti-wear protection is not required, the lifting chassis 5 can be directly jacked against the bottom of the pulverizing box body 2, and is limited by the clamping fit between the positioning ring strip 6 and the bottom of the pulverizing box body 2.

[0052] A first wear-resistant ring plate 8 and a second wear-resistant ring plate 9 are movably and fittingly installed inside the pulverizing box body 2. The first wear-resistant ring plate 8 and the second wear-resistant ring plate 9 are simultaneously clamped and fitted with the lifting chassis 5. Two positioning bolts 10 are spirally installed on the side wall of the pulverizing box body 2. A first positioning groove 11 is opened on the outer side wall of the first wear-resistant ring plate 8, a second positioning groove 12 is opened on the second wear-resistant ring plate 9, and the first positioning groove 11 and the second positioning groove 12 are spirally matched with the positioning bolts 10.

[0053] The interior of the crushing box body 2 is protected by several first wear-resistant ring plates 8 and a second wear-resistant ring plate 9. When installing the first wear-resistant ring plate 8 and the second wear-resistant ring plate 9, first place the first wear-resistant ring plate 8 on the lifting chassis 5. The outer diameter of the first wear-resistant ring plate 8 is the same as the inner diameter of the positioning ring strip 6. The first wear-resistant ring plate 8 is clamped inside the positioning ring strip 6. Then lift the lifting chassis 5 to align the first positioning groove 11 with the positioning bolt 10, and rotate the positioning bolt 10 to temporarily fix the first wear-resistant ring plate 8. Then lower the lifting chassis 5 and continue to place the first wear-resistant ring plate 8. When the lower first wear-resistant ring plate 8 fits with the upper first wear-resistant ring plate 8, loosen the positioning bolt 10 and continue to move upward to lock and cooperate the bottom first wear-resistant ring plate 8 with the positioning bolt 10 to achieve temporary fixation. At the bottom of the crushing box body 2, a second wear-resistant ring plate 9 is used. The size and height of the second wear-resistant ring plate 9 are the same as those of the first wear-resistant ring plate 8, and the installation method is also the same as that of the first wear-resistant ring plate 8.

[0054] A high-pressure air flow pipe 13 is connected and installed on the side wall of the crushing box body 2. An air flow through hole 14 is opened on the side wall of the second wear-resistant ring plate 9. The air flow through hole 14 and the high-pressure air flow pipe 13 are movably corresponding. The lifting chassis 5 is clamped and cooperated with the bottom of the crushing box body 2.

[0055] The difference between the second wear-resistant ring plate 9 and the first wear-resistant ring plate 8 is that an air flow through hole 14 needs to be opened corresponding to the outlet of the high-pressure air flow pipe 13, so as to realize the intake of air inside the crushing box body 2.

[0056] A docking card slot 15 is provided at the bottom of the crushing box body 2. The docking card slot 15 is clamped and cooperated with the positioning ring strip 6. Positioning holes 16 are opened at the bottoms of the first wear-resistant ring plate 8 and the second wear-resistant ring plate 9. The positioning holes 16 are movably cooperated with the elastic positioning member 7.

[0057] The docking card slot 15 provided at the bottom of the crushing box body 2 is clamped and cooperated with the positioning ring strip 6. At the same time, the rotation limit of the first wear-resistant ring plate 8 and the second wear-resistant ring plate 9 is realized through the cooperation of the elastic positioning member 7 and the positioning hole 16, so that the first positioning groove 11 and the second positioning groove 12 correspond to the positioning bolt 10, and the air flow through hole 14 corresponds to the high-pressure air flow pipe 13.

[0058] The elastic positioning member 7 includes an outer cylinder body 17 fixedly installed at the bottom of the lifting chassis 5. A positioning insertion column 18 is vertically and elastically installed inside the outer cylinder body 17. The positioning insertion column 18 movably passes through the lifting chassis 5. The positioning insertion column 18 is movably cooperated with the positioning hole 16. An adjustment groove 19 is opened on the outer cylinder body 17. An adjustment column 20 is installed on the positioning insertion column 18. The adjustment column 20 is slidably cooperated with the adjustment groove 19.

[0059] The elastic positioning member 7 drives the positioning insertion column 18 to elastically lift and lower inside the outer cylinder body 17 through the adjustment column 20, so as to realize the movable insertion and positioning inside the positioning hole 16.

[0060] A classification roller 21 is rotatably installed at the top of the crushing box body 2. One end of the classification roller 21 is connected to a driving motor 22, and the other end is communicated with a cyclone separator 23.

[0061] The classification roller 21 is used to screen the crushed materials. When the materials are crushed qualified, they can enter the inside of the classification roller 21 and be sent to the cyclone separator 23 for separation. The unqualified materials continue to be pneumatically crushed.

[0062] A feed hopper 24 is connected and installed at the top of the crushing box body 2.

[0063] The feed hopper 24 feeds materials into the crushing box body 2 from the top.

[0064] In the present utility model, during the production process, the first wear-resistant ring plate 8 and the second wear-resistant ring plate 9 are supported and sent into the inside of the crushing box body 2 at one time by the vertical hydraulic cylinder 4 and the lifting chassis 5, and then the lifting chassis 5 is pushed to the bottom of the crushing box body 2, forming a replaceable and detachable internal structure with strong wear resistance inside the crushing box body 2, preventing the inner wall of the pneumatic crusher from being worn, and improving the applicability of the pneumatic crusher.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. An internal anti-wear airflow mill, characterized in that: It comprises a bottom positioning frame, a crushing box is fixedly mounted on the bottom positioning frame, the bottom of the crushing box is open, a supporting bottom plate is provided at the bottom of the bottom positioning frame, a vertical hydraulic cylinder is fixedly mounted on the supporting bottom plate, a lifting chassis is fixedly mounted on the output end of the vertical hydraulic cylinder, a positioning ring strip is provided on the outer edge of the top surface of the lifting chassis, and an elastic positioning piece is provided at the bottom of the lifting chassis; The first wear-resistant ring plate and the second wear-resistant ring plate are movably fitted inside the pulverizing box, and the first wear-resistant ring plate and the second wear-resistant ring plate are simultaneously engaged with the lifting chassis, and two positioning bolts are screwed on the side wall of the pulverizing box, and a first positioning groove is provided on the outer side wall of the first wear-resistant ring plate, and a second positioning groove is provided on the second wear-resistant ring plate, and the first positioning groove and the second positioning groove are screwed with the positioning bolts; A high-pressure airflow pipe is connected and installed on the side wall of the pulverizing box, and an airflow hole is opened on the side wall of the second wear-resistant ring plate. The airflow hole and the high-pressure airflow pipe are movably corresponding to each other, and the lifting chassis is snap-fitted with the bottom of the pulverizing box.

2. The internal anti-wear airflow mill according to claim 1, characterized in that: A docking slot is provided at the bottom of the pulverizing box, and the docking slot is engaged with the positioning ring strip. Positioning holes are provided at the bottom of the first wear-resistant ring plate and the second wear-resistant ring plate, and the positioning holes are movably engaged with the elastic positioning piece.

3. The internal anti-wear airflow mill according to claim 2, characterized in that: The elastic positioning member includes an outer cylinder body fixedly mounted on the bottom of the lifting chassis, a positioning plug-in column is elastically mounted vertically inside the outer cylinder body, the positioning plug-in column movably passes through the lifting chassis, the positioning plug-in column movably cooperates with the positioning hole, an adjustment groove is opened on the outer cylinder body, an adjustment column is mounted on the positioning plug-in column, and the adjustment column slidably cooperates with the adjustment groove.

4. The internal anti-wear airflow mill according to claim 3, characterized in that: A grading roller is rotatably mounted on the top of the crushing box, one end of the grading roller is connected to a driving motor, and the other end is connected to a cyclone separator.

5. The internal anti-wear airflow mill according to claim 4, characterized in that: The top of the crushing box is connected and equipped with a feed hopper.

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