A crushing and screening device for red mud pretreatment

Abstract

The present application relates to solid waste treatment equipment technical field, and disclose a kind of for red mud pretreatment crushing and screening device, including main body and crushing cavity, crushing cavity is fixedly connected at the top of main body, two rotating connecting frames are fixedly connected on the front of main body, further including feeding mechanism, feeding mechanism is set in the top of crushing cavity, feeding mechanism includes two feeding extension frames, two feeding extension frames are all fixedly connected the top of main body, two limiting frames are fixedly connected on the top of feeding extension frame.The red mud agglomerate of the present application is automatically entered into crushing cavity inside after contacting with the winding-in roller, then the red mud agglomerate on both sides is simultaneously entered into crushing cavity inside and broken, so that the red mud agglomerate falls into main body and is crushed by crushing roller, thereby reducing labor, improving the automation performance of the device, not only improving the efficiency of red mud agglomerate crushing, but also making workers away from crushing roller and winding-in roller during use, improving the safety of the crusher.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment equipment technology, specifically to a crushing and screening device for red mud pretreatment. Background Technology

[0002] Red mud is a highly alkaline industrial waste residue discharged during the alumina refining process in the aluminum industry. The annual discharge volume is enormous, and the stockpile is increasing year by year. Its resource utilization is an inevitable trend in the industry's development. Pre-treatment is required before red mud can be utilized. Crushing and particle grading of agglomerated red mud are core processes that directly affect the efficiency of subsequent processing and product quality.

[0003] When crushing red mud lumps, the lumps are typically placed directly into the crusher. To prevent large, uncrushed fragments from splashing out during crushing, the top of the device is usually sealed, requiring the lumps to be fed into the crusher from the side. However, this side-feeding method requires manual pushing of the lumps until they reach the crushing rollers, increasing labor intensity, reducing automation, and impacting crushing efficiency.

[0004] Existing red mud crushing equipment mostly uses general-purpose double-roll crushers, whose crushing rollers are mostly of equal diameter and single-tooth structure, capable of crushing materials through a single crushing gap. In actual production, red mud agglomerates have large differences in particle size, and some large agglomerates are quite hard. When they directly enter the crushing gap of the crushing rollers, they are prone to jamming and blockage, causing equipment shutdowns or even motor burnout. At the same time, the single-tooth crushing rollers can only complete one crushing operation, resulting in uneven particle size distribution and a high proportion of coarse material in the output. This increases the load on subsequent screening processes and also affects the homogeneity of red mud for subsequent resource utilization. Summary of the Invention

[0005] The purpose of this invention is to provide a crushing and screening device for red mud pretreatment, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a crushing and screening device for red mud pretreatment, comprising a main body and a crushing chamber, the crushing chamber being fixedly connected to the top of the main body, and two rotating connecting frames being fixedly connected to the front of the main body. The device also includes:

[0008] The feeding mechanism is located at the top of the crushing chamber. The feeding mechanism includes two feeding extension frames, both of which are fixedly connected to the top of the main body. Two limiting frames are fixedly connected to the top of the feeding extension frames, and the limiting frames are provided with strip-shaped sliding holes on the left and right sides.

[0009] The crushing mechanism is located on the outer wall of the main body. The crushing mechanism includes two gear rods, which are rotatably connected to the left and right sides of the main body. Crushing rollers are rotatably connected inside the two rotating connecting frames. A toothed disc is fixedly connected to the side of the gear rod near the rotating connecting frame.

[0010] The winding mechanism is located at the top of the feed extension frame. The winding mechanism includes a winding roller, which is rotatably connected inside two strip-shaped sliding holes. A chain toothed plate is fixedly connected to the side of the winding roller near the toothed plate. A belt chain is sleeved on the outer wall of the chain toothed plate.

[0011] Furthermore, a support frame is fixedly connected to the bottom of the main body, and a discharge port is opened at the bottom of the support frame. The discharge port is connected to the interior of the main body, and two rotating holes are opened on the front of the main body.

[0012] Furthermore, the feeding mechanism also includes two rotating frames, which are fixedly connected to the top of the feeding extension frame at the end away from the crushing chamber. Two slide frames are fixedly connected to the front and back of the feeding extension frame, and two chute frames are fixedly connected to the bottom of the feeding extension frame near the toothed disc.

[0013] Furthermore, the crushing mechanism also includes a fixed frame, which is fixedly connected to one of the rotating connecting frames on the side away from the main body. A crushing motor is fixedly connected between the rotating connecting frame and the fixed frame. The output end of the crushing motor is fixedly connected to one of the crushing rollers. A transmission gear is provided at the connection between the crushing roller and the fixed frame. A connecting gear is fixedly connected to the outer wall of the gear rod at a point corresponding to the transmission gear.

[0014] Furthermore, the winding mechanism also includes two limiting slide frames, which are rotatably connected to both ends of the winding roller. A lifting frame is fixedly connected to the end of the limiting slide frame away from the winding roller, and a cover frame is fixedly connected to the bottom of the lifting frame. Two grooves are opened on the inner walls of the front and back sides of the cover frame.

[0015] Furthermore, the chute is slidably connected to the outer wall of the carriage, the cover frame covers the top of the crushing chamber, and compression springs are fixedly connected to the inner walls of the opposite sides of the two chute frames. The end of the compression spring away from the toothed disc is fixedly connected to a bonding block.

[0016] Furthermore, a tensioning plate frame is rotatably connected inside the chute frame. The tensioning plate frame is abutted against the end of the bonding block away from the compression spring, and the belt chain is fitted with a connecting toothed plate at the end of the tensioning plate frame away from the bonding block.

[0017] Furthermore, an expansion mechanism is provided between the two rotating frames. The expansion mechanism includes a baffle frame rotatably connected between the two rotating frames. A roller is rotatably connected to the end of the baffle frame away from the rotating frame. Two rotating bars are fixedly connected to the end of the baffle frame away from the roller. An extension hole is provided on the outer wall of each of the two rotating bars at the end away from the baffle frame. The extension hole is slidably connected to the end of the lifting frame away from the covering frame.

[0018] The present invention has the following beneficial effects:

[0019] This invention inserts red mud clumps into the feed extension frame through its inlet, above the frame, so that they contact the auger rollers. When the crushing motor drives the crushing roller to rotate, the transmission gear between the motor and the roller meshes with the gears on the gear shafts, causing the two gear shafts to rotate on both sides of the main body. This rotation of the gear sprockets causes the chain to rotate, transmitting power to the chain sprockets via a belt chain. This causes the auger rollers to rotate between the two limiting slide frames and inside the two strip-shaped sliding holes, allowing them to move synchronously with the crushing rollers. The teeth on the auger rollers then entrain the red mud clumps. Inside the crushing chamber, after the red mud lumps are inserted into the crushing chamber through the side feed extension frame inlet, it is not necessary to manually push the red mud lumps until they contact the crushing rollers. The red mud lumps automatically enter the crushing chamber after contacting the auger rollers. Then, the red mud lumps that enter the crushing chamber from both sides simultaneously collide and break, causing the red mud lumps to fall into the main body and be crushed by the crushing rollers. This reduces labor and improves the automation performance of the device. It not only improves the efficiency of red mud lumps crushing, but also keeps the workers away from the crushing rollers and auger rollers during use, thus improving the safety of the crusher.

[0020] When a thick red mud agglomerate enters between the feed extension frame and the baffle frame, the invention continuously pushes the red mud agglomerate towards the auger. The thickness of the red mud agglomerate causes the top of the agglomerate to abut against the roller at the bottom of the rotating bar, thereby increasing the distance between the baffle frame and the feed extension frame. Simultaneously, the baffle frame rotates on the two rotating frames, causing the two rotating bars to tilt upwards, allowing the lifting frame to slide inside the extension hole. This lifts the two limiting slide frames, causing the auger to slide inside the strip-shaped sliding hole. This allows the distance between the auger and the feed extension frame to be adjusted synchronously with the thickness of the red mud agglomerate, avoiding the situation where the distance between the auger and the feed extension frame is less than the thickness of the red mud agglomerate, making it difficult to insert it into the crushing chamber. This allows the crusher to crush red mud agglomerates of different thicknesses.

[0021] The present invention uses a crushing motor to drive the crushing rollers inside the main body to rotate. Through gears on the two crushing rollers near the crushing motor end, the two crushing rollers rotate relative to each other inside the rotating hole. This allows the red mud clumps to be crushed after entering the crushing chamber. The crushed red mud particles fall through the discharge port into the collection container placed at the bottom of the support frame. When the red mud clumps break during crushing, the cover frame blocks the top of the crushing chamber to prevent the broken red mud clumps from splashing out and to prevent workers from collecting and stuffing the splashed red mud fragments back into the crusher for further crushing.

[0022] When the two auger rollers rise, the lifting frame synchronously drives the cover frame to slide along the outer wall of the slide frame through the chute, causing the cover frame to rise synchronously. At the same time, the height of the cover frame and the crushing chamber is adjusted to facilitate the entry of thicker red mud clumps into the crushing chamber. When the limiting slide frame rises, the distance between the chain sprockets and the sprockets increases. Through the meshing of the strip chain and the tensioning plate frame, the tensioning plate frame is pulled to slide inside the chute frame, causing the tensioning plate frame to move closer to the chain sprockets and the sprockets. Furthermore, the compression spring is compressed by the contact block, so that the strip chain always maintains meshing connection with the chain sprockets and the sprockets, thereby improving the practicality of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is an overall sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 4 This is a bottom view of the main body of the invention;

[0028] Figure 5 This is a schematic diagram of the expansion mechanism structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the winding mechanism structure of the present invention;

[0030] Figure 7 for Figure 3 Enlarged view of point A in the middle;

[0031] Figure 8 for Figure 5 Enlarged view of section B in the middle.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] In the diagram: 1. Main body; 101. Support frame; 102. Crushing chamber; 103. Rotating connecting frame; 104. Rotating hole; 105. Discharge port; 2. Feeding mechanism; 201. Feeding extension frame; 202. Rotating frame; 203. Limiting frame; 204. Strip-shaped sliding hole; 205. Slide frame; 206. Slide chute frame; 3. Crushing mechanism; 301. Fixed frame; 302. Crushing motor; 303. Crushing roller; 304. 305. Gear shaft; 4. Spike; 5. Winding mechanism; 6. Winding roller; 7. Limiting slide frame; 8. Lifting frame; 9. Covering frame; 10. Chain sprocket; 11. Belt chain; 2. Compression spring; 3. Adhesive block; 405. Tensioning plate frame; 51. Slide groove; 6. Expansion mechanism; 7. Rotating bar; 8. Baffle frame; 9. Extension hole; 10. Roller. Detailed Implementation

[0034] 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.

[0035] Example 1

[0036] Please see Figures 1-8 As shown, the present invention is a crushing and screening device for red mud pretreatment, comprising a main body 1 and a crushing chamber 102, the crushing chamber 102 being fixedly connected to the top of the main body 1, and two rotating connecting frames 103 being fixedly connected to the front of the main body 1, and further comprising:

[0037] Feeding mechanism 2 is located at the top of crushing chamber 102. Feeding mechanism 2 includes two feeding extension frames 201, both of which are fixedly connected to the top of main body 1. Two limiting frames 203 are fixedly connected to the top of feeding extension frames 201. The left and right sides of the limiting frames 203 are provided with strip-shaped sliding holes 204. Feeding mechanism 2 also includes two rotating frames 202, which are fixedly connected to the top of feeding extension frames 201 at the end away from crushing chamber 102. Two slide frames 205 are fixedly connected to the front and back of feeding extension frames 201. Two grooving frames 206 are fixedly connected to the bottom of feeding extension frames 201 near the toothed disc 305.

[0038] The crushing mechanism 3 is located on the outer wall of the main body 1. The crushing mechanism 3 includes two gear rods 304, which are rotatably connected to the left and right sides of the main body 1. Crushing rollers 303 are rotatably connected inside the two rotating connecting frames 103. A toothed disc 305 is fixedly connected to the side of the gear rod 304 near the rotating connecting frame 103. The crushing mechanism 3 also includes a fixed frame 301, which is fixedly connected to the side of one of the rotating connecting frames 103 away from the main body 1. A crushing motor 302 is fixedly connected between the rotating connecting frame 103 and the fixed frame 301. The output end of the crushing motor 302 is fixedly connected to one of the crushing rollers 303. A transmission gear is provided at the connection between the crushing roller 303 and the fixed frame 301. A connecting gear is fixedly connected to the outer wall of the gear rod 304 at a point corresponding to the transmission gear.

[0039] The winding mechanism 4 is located at the top of the feed extension frame 201. The winding mechanism 4 includes a winding roller 401, which is rotatably connected to the inside of two strip-shaped sliding holes 204. A chain sprocket 405 is fixedly connected to the side of the winding roller 401 near the sprocket 305. A strip chain 406 is fitted onto the outer wall of the chain sprocket 405 and the sprocket 305. The winding mechanism 4 also includes two limiting slide frames 402, which are rotatably connected to the two ends of the winding roller 401. A lifting frame 403 is fixedly connected to the end of the limiting slide frame 402 away from the winding roller 401. A lifting frame 403 is fixedly connected to the bottom of the lifting frame 403. The cover frame 404 has two grooves 410 on its front and back inner walls. The grooves 410 are slidably connected to the outer wall of the slide frame 205. The cover frame 404 covers the top of the crushing chamber 102. The inner walls of the two slide frames 206 on opposite sides are fixedly connected to compression springs 407. The end of the compression spring 407 away from the toothed disc 305 is fixedly connected to a bonding block 408. The slide frame 206 is rotatably connected to a tension pressure plate frame 409. The tension pressure plate frame 409 and the end of the bonding block 408 away from the compression spring 407 are abutted and connected. The belt chain 406 is sleeved with the toothed disc at the end of the tension pressure plate frame 409 away from the bonding block 408.

[0040] A support frame 101 is fixedly connected to the bottom of the main body 1. A discharge port 105 is opened at the bottom of the support frame 101. The discharge port 105 is connected to the interior of the main body 1. Two rotating holes 104 are opened on the front of the main body 1.

[0041] An expansion mechanism 5 is provided between the two rotating frames 202. The expansion mechanism 5 includes a baffle frame 502, which is rotatably connected between the two rotating frames 202. A roller 504 is rotatably connected to the end of the baffle frame 502 away from the rotating frame 202. Two rotating bars 501 are fixedly connected to the end of the baffle frame 502 away from the roller 504. An extension hole 503 is provided at the end of the outer wall of the two rotating bars 501 away from the baffle frame 502. The extension hole 503 is slidably connected to the end of the lifting frame 403 away from the cover frame 404.

[0042] In operation, the crushing motor 302 drives the crushing rollers 303 inside the main body 1 to rotate. Through gears on one end of the crushing motor 302, the two crushing rollers 303 rotate relative to each other inside the rotating hole 104, thus crushing the red mud lumps that enter the crushing chamber 102. The red mud lumps are then inserted into the feed extension frame 201 through its inlet, above the feed extension frame 201, so that they contact the snagging roller 401. When the crushing motor 302 drives the crushing rollers 303 to rotate, simultaneously, the transmission gear between the crushing motor 302 and the crushing rollers 303 meshes with the gears on the gear shafts 304, causing the two gear shafts 304 to rotate on both sides of the main body 1, thus rotating the toothed disc 305. When the toothed disc 305 rotates, it... The belt chain 406 transmits power to the chain sprocket 405, thereby driving the auger roller 401 to rotate between the two limit slide frames 402 and inside the two strip-shaped sliding holes 204. This causes the auger roller 401 to run synchronously with the crushing roller 303. The teeth on the auger roller 401 roll the red mud clumps into the crushing chamber 102. After the red mud clumps are inserted into the crushing chamber 102 from the side feed extension frame 201, it is not necessary to manually push the red mud clumps until they contact the crushing roller 303. After the red mud clumps contact the auger roller 401, they automatically enter the crushing chamber 102. Then, the red mud clumps that enter the crushing chamber 102 from both sides collide and break, causing the red mud clumps to fall into the main body 1 and be crushed by the crushing roller 303.

[0043] Example 2

[0044] Please see Figures 1-8As shown, during use, when a relatively thick red mud agglomerate enters between the feed extension frame 201 and the baffle frame 502, it is continuously pushed towards the snagging roller 401. The thickness of the red mud agglomerate causes the top of the agglomerate to abut against the roller 504 at the bottom of the rotating bar 501, thereby increasing the distance between the baffle frame 502 and the feed extension frame 201. Simultaneously, the baffle frame 502 rotates on the two rotating frames 202, causing the two rotating bars 501 to tilt upwards, thus lifting the lifting frame 403. The extension hole 503 slides inside, thereby raising the two limiting slide plates 402, so that the auger roller 401 slides inside the strip-shaped sliding hole 204. This allows the distance between the auger roller 401 and the feed extension frame 201 to be adjusted synchronously with the thickness of the red mud agglomerate. This avoids the situation where the distance between the auger roller 401 and the feed extension frame 201 is less than the thickness of the red mud agglomerate due to its large thickness, making it difficult to insert the agglomerate into the crushing chamber 102. This allows the crusher to crush red mud agglomerates of different thicknesses.

[0045] When the two auger rollers 401 rise, the lifting frame 403 simultaneously drives the cover frame 404 to slide on the outer wall of the slide frame 205 through the slide groove 410, so that the cover frame 404 rises synchronously. At the same time, the height of the cover frame 404 and the crushing chamber 102 is adjusted to facilitate the entry of thicker red mud clumps into the crushing chamber 102. When the limit slide frame 402 rises, the distance between the chain sprocket 405 and the sprocket 305 will increase. Through the meshing of the strip chain 406 and the tensioning plate frame 409, the tensioning plate frame 409 is pulled to slide inside the slide groove frame 206, so that the tensioning plate frame 409 moves closer to the chain sprocket 405 and the sprocket 305. And through the contact block 408, the compression spring 407 is compressed, so that the strip chain 406 always maintains the meshing connection with the chain sprocket 405 and the sprocket 305.

[0046] The crushed red mud particles fall through the discharge port 105 into the storage container placed at the bottom of the support frame 101. After the red mud clumps enter the crushing chamber 102, when the red mud clumps break during crushing, the cover frame 404 blocks the top of the crushing chamber 102 to prevent the broken red mud clumps from splashing to the outside, thus preventing workers from collecting and picking up the red mud fragments that splashed to the outside and stuffing them back into the crusher for crushing.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A crushing and screening device for red mud pretreatment, comprising a main body (1) and a crushing chamber (102), wherein the crushing chamber (102) is fixedly connected to the top of the main body (1), and two rotating connecting frames (103) are fixedly connected to the front of the main body (1), characterized in that, Also includes: Feeding mechanism (2), the feeding mechanism (2) is set at the top of crushing chamber (102), the feeding mechanism (2) includes two feeding extension frames (201), both feeding extension frames (201) are fixedly connected to the top of the main body (1), and two limiting frames (203) are fixedly connected to the top of the feeding extension frame (201), and the limiting frames (203) are provided with strip-shaped sliding holes (204) on the left and right sides; Crushing mechanism (3) is set on the outer wall of the main body (1). The crushing mechanism (3) includes two gear rods (304). The two gear rods (304) are rotatably connected to the left and right sides of the main body (1). Crushing rollers (303) are rotatably connected inside the two rotating connecting frames (103). A toothed disc (305) is fixedly connected to the side of the gear rod (304) near the rotating connecting frame (103). The winding mechanism (4) is located on the top of the feed extension frame (201). The winding mechanism (4) includes a winding roller (401). The winding roller (401) is rotatably connected inside two strip-shaped sliding holes (204). A chain toothed plate (405) is fixedly connected to the side of the winding roller (401) near the toothed plate (305). A strip chain (406) is sleeved on the outer wall of the chain toothed plate (405) and the toothed plate (305).

2. The crushing and screening device for red mud pretreatment according to claim 1, characterized in that: The bottom of the main body (1) is fixedly connected to a support frame (101), and the bottom of the support frame (101) is provided with a discharge port (105). The discharge port (105) is connected to the interior of the main body (1), and the front of the main body (1) has two rotating holes (104).

3. The crushing and screening device for red mud pretreatment according to claim 1, characterized in that: The feeding mechanism (2) also includes two rotating frames (202), which are fixedly connected to the top of the feeding extension frame (201) away from the crushing chamber (102). The front and back of the feeding extension frame (201) are fixedly connected to two slide frames (205), and the bottom of the feeding extension frame (201) near the toothed disc (305) is fixedly connected to two chute frames (206).

4. The crushing and screening device for red mud pretreatment according to claim 1, characterized in that: The crushing mechanism (3) also includes a fixed frame (301), which is fixedly connected to one of the rotating connecting frames (103) on the side away from the main body (1). A crushing motor (302) is fixedly connected between the rotating connecting frame (103) and the fixed frame (301). The output end of the crushing motor (302) is fixedly connected to one of the crushing rollers (303). A transmission gear is provided at the connection between the crushing roller (303) and the fixed frame (301). A connecting gear is fixedly connected to the outer wall of the gear rod (304) at a point corresponding to the transmission gear.

5. The crushing and screening device for red mud pretreatment according to claim 1, characterized in that: The winding mechanism (4) also includes two limiting slide frames (402), which are rotatably connected to both ends of the winding roller (401). A lifting frame (403) is fixedly connected to the end of the limiting slide frame (402) away from the winding roller (401). A cover frame (404) is fixedly connected to the bottom of the lifting frame (403). Two grooves (410) are opened on the inner walls of the front and back sides of the cover frame (404).

6. A crushing and screening device for red mud pretreatment according to claim 5, characterized in that: The chute (410) is slidably connected to the outer wall of the slide (205), the cover frame (404) covers the top of the crushing chamber (102), and the inner walls of the two chute frames (206) on opposite sides are fixedly connected with compression springs (407), and the end of the compression spring (407) away from the toothed disc (305) is fixedly connected with a bonding block (408).

7. A crushing and screening device for red mud pretreatment according to claim 6, characterized in that: The sliding frame (206) is rotatably connected to a tensioning plate frame (409). The tensioning plate frame (409) is abutted against the end of the bonding block (408) away from the compression spring (407). The belt chain (406) is fitted with a connecting toothed plate at the end of the tensioning plate frame (409) away from the bonding block (408).

8. The crushing and screening device for red mud pretreatment according to claim 1, characterized in that: An expansion mechanism (5) is provided between the two rotating frames (202). The expansion mechanism (5) includes a baffle frame (502). The baffle frame (502) is rotatably connected between the two rotating frames (202). A roller (504) is rotatably connected to one end of the baffle frame (502) away from the rotating frame (202). Two rotating bars (501) are fixedly connected to one end of the baffle frame (502) away from the roller (504). An extension hole (503) is provided at one end of the outer wall of the two rotating bars (501) away from the baffle frame (502). The extension hole (503) is slidably connected to one end of the lifting frame (403) away from the cover frame (404).

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