Raw material crushing device for alumina production

Abstract

This invention relates to the field of alumina production machinery technology. The invention discloses a raw material crushing device for alumina production, comprising a housing with a main cavity and a secondary cavity respectively arranged on both sides of the housing. The main cavity is connected to the inlet of the housing. A main crushing roller and a secondary crushing roller are respectively arranged inside the main cavity and the secondary cavity, and both are rotatably connected to the housing. One side of the main crushing roller and the secondary crushing roller penetrates the housing and is respectively connected to a transmission gear set one and a transmission gear set two. A pulley set connects the transmission gear set one and the transmission gear set two. One gear of the transmission gear set one meshes with a drive motor one. In this invention, the alumina raw material is screened before crushing. Qualified fine raw materials are introduced into the main crushing roller for crushing, while large pieces of raw material are automatically pushed to a guide frame and introduced into the secondary cavity for secondary crushing, improving the uniformity of crushing and processing efficiency, and avoiding over-crushing of fine materials and insufficient crushing of coarse materials.

Description

Technical Field

[0001] This invention relates to the field of alumina production machinery technology, specifically to a raw material crushing device for alumina production. Background Technology

[0002] Alumina is an important raw material in metallurgy, chemical industry, refractory materials and other fields. In the process of alumina preparation, raw materials such as aluminum ore need to be crushed to meet the particle size requirements of subsequent processes. In the existing alumina raw material crushing equipment, the raw materials are crushed directly after entering, and it is impossible to classify and screen the raw material particle size. Large raw materials and fine raw materials are often mixed and crushed, resulting in over-crushing of fine raw materials and insufficient crushing of large raw materials, poor overall crushing uniformity and low efficiency. Meanwhile, when the crushing equipment is feeding, the alumina raw material is directly discharged into the crushing equipment. Due to the height difference between the feeding end and the crushing end, the dust on the surface of the raw material is splashed outward after contact and dispersed in the production environment, causing pollution to the production environment. Therefore, there is an urgent need for a raw material crushing device for alumina production that can be graded and screened, automatically diverted, prevents material blockage, and has good dust removal effect. Summary of the Invention

[0003] The purpose of this invention is to provide a raw material crushing device for alumina production, thereby solving the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a housing, with a main cavity and a secondary cavity respectively arranged on both sides of the housing's interior. The main cavity is connected to the housing's inlet. A main crushing roller and a secondary crushing roller are respectively arranged inside the main cavity and the secondary cavity. Both the main crushing roller and the secondary crushing roller are rotatably connected to the housing. One side of the main crushing roller and the secondary crushing roller penetrates the housing and is respectively connected to a transmission gear set one and a transmission gear set two. A pulley set connects the transmission gear set one and the transmission gear set two. One gear of the transmission gear set one meshes with a drive motor. A guide frame is provided between the main cavity and the secondary cavity. The two sides of the guide frame extend downward towards the main cavity and the secondary cavity respectively. The highest point of the top of the guide frame is located at the connection between the main cavity and the secondary cavity. The main cavity is symmetrically arranged with movable frames on both sides above the guide frame. The movable frames are parallel to one side of the guide frame according to the tilt angle of the guide frame. A horizontal bar is slidably arranged inside the movable frame. An adjusting ring is movably arranged through the horizontal bar. A base frame is fixedly connected to the bottom of the adjusting ring. A row of forks is slidably connected to the bottom of the base frame. The row of forks is provided with several points and notches facing the top of the guide frame. The row of forks is suspended in the air.

[0004] Preferably, a vertical shaft is fixedly connected to the top of one side of the fork, the vertical shaft passes through the base frame and is slidably connected thereto, a telescopic lever is movably engaged on the outer side of the vertical shaft, a bearing is slidably connected to the middle of the telescopic lever, the bearing is mounted on the crossbar, a ball head is fixedly connected to the end of the telescopic lever away from the vertical shaft, the side of the ball head abuts against an undulating frame, and the surface of the undulating frame is configured with an undulating structure.

[0005] Preferably, a second drive motor is provided on the outer wall of the housing. The output shaft of the second drive motor passes through the housing and is fixedly connected to a first bevel gear. The side of the first bevel gear meshes with the second bevel gear. The second bevel gear is rotatably mounted on one of the movable frames. A reciprocating screw is rotatably installed inside the movable frame. One end of the reciprocating screw is connected to the second bevel gear, and the reciprocating screw is screwed to a crossbar.

[0006] Preferably, an electric cylinder is fixedly connected to the middle of the horizontal bar, and a support block is fixedly connected to the output shaft of the electric cylinder, and the support block is fixedly engaged with the top side of the adjusting ring.

[0007] Preferably, the bottom of the box is provided with a powder suction mechanism, and the input end of the powder suction mechanism is connected to a concave frame, which is symmetrically arranged on both sides of the top inlet of the box.

[0008] Preferably, a filter screen is fixedly connected to the top of one of the recessed frames, and the filter screen is disposed on the recessed frame.

[0009] Preferably, an electric cylinder two is fixedly installed on the side wall of one of the concave frames near the filter screen, and a cover is fixedly connected to the end of the output shaft of the electric cylinder two, and a feeding frame is fixedly connected to the side of the cover.

[0010] Preferably, the mask and the feeding frame are slidably connected to the two recessed frames.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, a dual-cavity structure consisting of a main cavity and a secondary cavity is adopted, along with a reciprocating forklift. This allows for the screening of alumina raw materials before crushing, guiding qualified fine materials into the main crushing roller for crushing, and automatically pushing large materials to the guide frame and into the secondary cavity for secondary crushing. This improves the uniformity of crushing and processing efficiency, and avoids over-crushing of fine materials and insufficient crushing of coarse materials. At the same time, the forklift adopts a reciprocating oscillating motion structure, with a pointed tip and concave design, which guides the raw materials during the screening process and prevents large materials from getting stuck and accumulating. This results in high screening smoothness and ensures continuous and stable operation of the device. In this invention, the powder suction mechanism, concave frame, filter screen, and cover, together with the feeding frame, intermittently control the opening and closing of the feed inlet, forming a closed dust removal area at the feeding position, effectively collecting the dust generated during the crushing process, preventing dust leakage and improving the production environment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the side cross-section of the housing of the present invention; Figure 4 This is a schematic diagram of the top cross-sectional structure of the housing of the present invention; Figure 5 This is a schematic diagram of the structure of the forklift of the present invention; Figure 6 This is a schematic diagram of the structure of the shield and feeding frame of the present invention; Figure 7 This is a schematic diagram of the structure of the filter screen of the present invention.

[0013] In the diagram: 1. Box body; 2. Main cavity; 3. Secondary cavity; 4. Main crushing roller; 5. Secondary crushing roller; 6. Transmission gear set one; 7. Transmission gear set two; 8. Pulley set; 9. Drive motor one; 10. Guide frame; 11. Moving frame; 12. Crossbar; 13. Adjusting ring; 14. Base frame; 15. Forklift; 16. Vertical shaft; 17. Telescopic lever; 18. Bearing; 19. Ball head; 20. Elevating frame; 21. Drive motor two; 22. Bevel gear one; 23. Bevel gear two; 24. Reciprocating screw; 25. Electric cylinder one; 26. Support block; 27. Powder suction mechanism; 28. Concave frame; 29. ​​Filter screen; 30. Electric cylinder two; 31. Cover; 32. Feeding frame. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1 to 7As shown in the figure, a raw material crushing device for alumina production includes a housing 1. The housing 1 is divided into a main cavity 2 and a secondary cavity 3. The main cavity 2 is connected to the top inlet of the housing 1. The main cavity 2 and the secondary cavity 3 are respectively equipped with a main crushing roller 4 and a secondary crushing roller 5. The main crushing roller 4 and the secondary crushing roller 5 are rotatably connected to the housing 1. The main crushing roller 4 and the secondary crushing roller 5 extend out of the housing 1 from the same side and are respectively connected to a transmission gear set 1 6 and a transmission gear set 2 7. The transmission gear set 1 6 and the transmission gear set 2 7 are connected through a pulley set 8. The transmission gear set 1 6 is meshed with a drive motor 1 9. When the drive motor 1 9 is working, it synchronously drives the main crushing roller 4 and the secondary crushing roller 5 to rotate through the transmission gear set 1 6, the pulley set 8, and the transmission gear set 2 7, providing power for the crushing operation. A guide frame 10 is provided between the main cavity 2 and the secondary cavity 3. The two sides of the guide frame 10 are inclined downward towards the main cavity 2 and the secondary cavity 3 respectively. Its highest point is located at the connection between the main cavity 2 and the secondary cavity 3. It is used to guide the screened large pieces of raw materials to the secondary cavity 3. A movable frame 11 is symmetrically provided on both sides above the guide frame 10 inside the main cavity 2. The movable frame 11 is parallel to the inclined side of the guide frame 10. A horizontal bar 12 is slidably provided inside the movable frame 11. An adjusting ring 13 is movably passed through the horizontal bar 12. The bottom of the adjusting ring 13 is fixed to the base frame 14. The bottom of the base frame 14 is slidably connected to the fork 15. The fork 15 has several points and notches facing the top of the guide frame 10 and is suspended in the air. It is used to screen the raw materials and separate qualified raw materials from large pieces of raw materials. A vertical shaft 16 is fixed at the top of the forklift 15. The vertical shaft 16 extends upward through the base frame 14 and slides with it. A telescopic lever 17 is movably engaged on the outside of the vertical shaft 16. A bearing 18 is slidably connected in the middle of the telescopic lever 17. The bearing 18 is mounted on the crossbar 12. A ball head 19 is fixed at the end of the telescopic lever 17 away from the vertical shaft 16. The ball head 19 abuts against the undulating frame 20. The surface of the undulating frame 20 has an undulating structure. When the crossbar 12 moves, the ball head 19 rolls along the undulating frame 20, causing the telescopic lever 17 to swing left and right. This, in turn, drives the forklift 15 to move left and right through the vertical shaft 16, improving the screening and guiding effect and preventing raw material jamming. The outer wall of the housing 1 is equipped with a second drive motor 21. The output shaft of the second drive motor 21 extends into the housing 1 and fixes a first bevel gear 22. The first bevel gear 22 meshes with a second bevel gear 23. The second bevel gear 23 is mounted on a movable frame 11 on one side. A reciprocating screw 24 is rotatably installed inside the movable frame 11. One end of the reciprocating screw 24 is fixedly connected to the second bevel gear 23, and the reciprocating screw 24 is threadedly connected to the crossbar 12. The second drive motor 21 drives the reciprocating screw 24 to rotate through the first bevel gear 22 and the second bevel gear 23, so that the crossbar 12 reciprocates along the movable frame 11, thereby driving the fork 15 to reciprocate, so as to realize continuous screening. Electric cylinder 25 is fixed in the middle of the horizontal bar 12. The output shaft of electric cylinder 25 is fixed to support block 26. Support block 26 is fixedly snapped to the top side of adjusting ring 13. Electric cylinder 25 can drive support block 26 to rise and fall. The height of the fork 15 can be adjusted by adjusting ring 13 and base frame 14 to adapt to the screening requirements of raw materials with different particle sizes. The bottom of the box 1 is provided with a dust suction mechanism 27. The input end of the dust suction mechanism 27 is connected to a concave frame 28. The concave frames 28 are symmetrically arranged on both sides of the top inlet of the box 1. A filter screen 29 is fixed to the top of one of the concave frames 28. The filter screen 29 covers the concave frame 28 and is used to filter dust. An electric cylinder 30 is fixed to the side wall of the concave frame 28 near the filter screen 29. A cover 31 is fixed to the output shaft end of the electric cylinder 30. A feeding frame 32 is fixed to the side of the cover 31. The cover 31 and the feeding frame 32 are slidably connected to the two concave frames 28. The electric cylinder 30 can push the cover 31 and the feeding frame 32 to move, control the opening and closing of the feed inlet, and at the same time cooperate with the dust suction mechanism 27 to collect dust and prevent dust leakage. When the device is working, the alumina raw material enters the main cavity 2 through the top inlet of the box 1. The fork 15, with the cooperation of lateral movement and left and right swing, screens the raw material with qualified particle size into the lower part, where it is crushed by the main crushing roller 4. Large pieces of raw material are pushed to the top of the guide frame 10, so that they slide into the secondary cavity 3 along the guide frame 10, where they are crushed again by the secondary crushing roller 5, thereby achieving graded crushing and improving crushing uniformity and processing efficiency.

[0016] The method of use and advantages of the present invention: The working process of this raw material crushing device for alumina production is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: S1: During operation, alumina raw material granules are placed on the filter screen. Electric cylinder 2 30 pushes the cover 31 and the feeding frame 32 to move, pushing the raw material into the box. At the same time, the box's inlet opens. Before this, the powder suction mechanism 27 is activated, and the concave frame 28 adsorbs and collects the dust generated during the feeding process. The filter screen 29 filters the dust airflow. After one raw material push is completed, electric cylinder 2 returns to its original position, so that the box's inlet is closed by the cover. At the same time, the feeding frame returns to its original position, and the pushing operation is performed again. S2: Alumina raw material is fed into the main cavity 2 from the top inlet of the box 1. Drive motor 9 starts and drives the main crushing roller 4 and the auxiliary crushing roller 5 to rotate synchronously through transmission gear set 6, transmission gear set 7 and pulley set 8, preparing to crush the raw material. The raw material falls to the area above the guide frame 10 and rolls into the main cavity 2. Drive motor 21 starts and drives the reciprocating screw 24 to rotate through the meshing of bevel gear 22 and bevel gear 23, causing the crossbar 12 to move along the moving frame 11. The crossbar 12 drives the base frame 14 and the fork 15 to move synchronously. The fork 15 uses its pointed head and notch to comb and screen the raw material. Raw material with qualified particle size falls smoothly through the fork 15 and enters the main cavity 2 to be crushed by the main crushing roller 4. Larger blocky raw material is pushed by the fork 15 to the top of the guide frame 10 and slides to the other side of the guide frame 10, entering the auxiliary cavity 3, where it is crushed again by the auxiliary crushing roller 5. This achieves graded crushing of raw materials of different sizes, improving crushing uniformity and efficiency. S3: During the translation of the forklift 15, the ball head 19 at the end of the telescopic lever 17 slides along the concave and convex surfaces of the undulating frame 20, driving the telescopic lever 17 to swing left and right around the bearing. Through the vertical shaft 16 at the bottom, the forklift 15 moves laterally back and forth, further improving the screening and guiding effect of blocky raw materials and avoiding the accumulation and blockage of raw materials. The electric cylinder 25 can push the support block 26 to rise and fall, driving the adjusting ring 13 and the base frame 14 to move up and down, adjusting the working height of the forklift 15 to adapt to the screening requirements of raw materials of different particle sizes.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material crushing device for alumina production, characterized in that, Includes a housing (1), with a main cavity (2) and a secondary cavity (3) respectively arranged on both sides of the housing (1). The main cavity (2) is connected to the inlet of the housing (1). The main crushing roller (4) and the secondary crushing roller (5) are respectively arranged inside the main cavity (2) and the secondary cavity (3). The main crushing roller (4) and the secondary crushing roller (5) are rotatably connected to the housing (1). One side of the main crushing roller (4) and the secondary crushing roller (5) penetrates the housing (1) and is respectively connected to a transmission gear set one (6) and a transmission gear set two (7). A pulley set (8) is connected between the transmission gear set one (6) and the transmission gear set two (7). One of the gears of the transmission gear set one (6) meshes with a drive motor one (9). A guide frame (10) is provided between the main cavity (2) and the secondary cavity (3). The two sides of the guide frame (10) extend downward towards the main cavity (2) and the secondary cavity (3) respectively. The highest point of the top of the guide frame (10) is located at the connection between the main cavity (2) and the secondary cavity (3). The main cavity (2) is symmetrically arranged with movable frames (11) on both sides above the guide frame (10). The movable frames (11) are arranged parallel to one side of the guide frame (10) according to the tilt angle of the guide frame (10). A horizontal bar (12) is slidably arranged inside the movable frame (11). An adjusting ring (13) is movably arranged through the horizontal bar (12). A base frame (14) is fixedly connected to the bottom of the adjusting ring (13). A row of forks (15) is slidably connected to the bottom of the base frame (14). The row of forks (15) has several points and notches facing the top of the guide frame (10). The row of forks (15) is suspended in the air.

2. The raw material pulverizing device for alumina production according to claim 1, characterized in that: A vertical shaft (16) is fixedly connected to the top of one side of the fork (15). The vertical shaft (16) passes through the base frame (14) and is slidably connected to it. A telescopic lever (17) is movably engaged on the outside of the vertical shaft (16). A bearing (18) is slidably connected to the middle of the telescopic lever (17). The bearing (18) is mounted on the crossbar (12). A ball head (19) is fixedly connected to the end of the telescopic lever (17) away from the vertical shaft (16). The side of the ball head (19) abuts against an undulating frame (20). The surface of the undulating frame (20) is set with a concave-convex undulating structure.

3. The raw material pulverizing device for alumina production according to claim 1, characterized in that: A second drive motor (21) is provided on the outer wall of the housing (1). The output shaft of the second drive motor (21) passes through the housing (1) and is fixedly connected to a first bevel gear (22). The side of the first bevel gear (22) is meshed with a second bevel gear (23). The second bevel gear (23) is rotatably mounted on one of the moving frames (11). A reciprocating screw (24) is rotatably installed inside the moving frame (11). One end of the reciprocating screw (24) is connected to the second bevel gear (23). The reciprocating screw (24) is screwed to a crossbar (12).

4. The raw material pulverizing device for alumina production according to claim 1, characterized in that: An electric cylinder (25) is fixedly connected to the middle of the horizontal bar (12), and a support block (26) is fixedly connected to the output shaft of the electric cylinder (25). The support block (26) is fixedly engaged with the top side of the adjusting ring (13).

5. The raw material crushing device for alumina production according to claim 1, characterized in that: The bottom of the box (1) is provided with a powder suction mechanism (27), and the input end of the powder suction mechanism (27) is connected to a concave frame (28). The concave frame (28) is symmetrically arranged on both sides of the top inlet of the box (1).

6. The raw material crushing device for alumina production according to claim 5, characterized in that: A filter screen (29) is fixedly connected to the top of one of the recessed frames (28), and the filter screen (29) covers the recessed frame (28).

7. The raw material crushing device for alumina production according to claim 6, characterized in that: An electric cylinder two (30) is fixedly installed on the side wall of one of the recessed frames (28) near the filter screen (29). A cover (31) is fixedly connected to the end of the output shaft of the electric cylinder two (30), and a feeding frame (32) is fixedly connected to the side of the cover (31).

8. The raw material crushing device for alumina production according to claim 7, characterized in that: The shield (31) and the feeding frame (32) are slidably connected to the two recessed frames (28).

Images