Raw material crushing and grinding equipment for white corundum production
By integrating screening and crushing functions into white corundum production equipment, the problems of complexity and high energy consumption in existing systems have been solved, achieving efficient crushing and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-09
- Publication Date
- 2026-04-07
AI Technical Summary
In existing white fused alumina crushing systems, the crusher and screening machine are usually set up separately, which results in a complex system, high energy consumption, large footprint, and increased production costs.
An integrated raw material crushing and grinding equipment for white corundum production was designed. The equipment separates materials that meet or do not meet the particle size requirements through a screen cylinder. The screen cylinder is rotated back and forth by a transmission ring and a lever mechanism to realize automatic material feeding and screening. The adjustment bucket changes the material direction to improve crushing efficiency, and the cutting edge prevents screen hole clogging.
It improves crushing efficiency and effectiveness, reduces production costs, reduces equipment footprint, and simplifies system structure.
Smart Images
Figure CN121797441A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of white fused alumina crushing equipment, and more particularly to a raw material crushing and grinding equipment for white fused alumina production. Background Technology
[0002] The production of white fused alumina requires multiple crushing and grinding processes, from large molten blocks to fine micro powder. Each step relies on specific equipment. The entire crushing and grinding process can be divided into three main stages: the first stage, initial crushing, mainly crushes large pieces of white fused alumina into centimeter-sized pieces, using equipment such as jaw crushers and double roll crushers; the second stage, fine crushing and shaping, further crushes and optimizes particle shape, using equipment such as Barmac crushers and cone crushers; and the third stage, grinding and classification, mainly produces fine and micro powders, precisely controlling the final particle size, using equipment such as ball mills, tube mills, air classifiers, vertical mills, and air classifiers.
[0003] A double roll crusher consists of two counter-rotating crushing rolls that further crush materials through compression and grinding. To improve efficiency and particle size uniformity, a screening machine is often installed in production to send materials that do not meet the particle size requirements back to the double roll crusher for further processing, forming a closed-loop cycle. However, existing double roll crushers and screening machines are usually set up separately. The crushed material needs to be transported to the screening machine, and after screening, the material with excessively large particles is sent back to the crusher for further crushing. The multiple auxiliary equipment such as lifting and conveying equipment required in this process make the crushing system complex, energy-intensive, and occupy a large area, resulting in excessively high costs for crushing white corundum. Summary of the Invention
[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a raw material crushing and grinding device for white fused alumina production.
[0005] The technical implementation of the present invention is as follows: A raw material crushing and grinding device for white fused alumina production includes a support frame, two baffles fixedly connected to the support frame, two rotating rollers rotatably connected to the two baffles, one of the baffles being provided with a feed hopper, a first motor and a baffle cylinder fixedly connected to the support frame, the output shaft of the first motor being fixedly connected to one of the rotating rollers, the two rotating rollers being driven by a gear set, the baffle cylinder being provided with a discharge hopper, a screen cylinder being rotatably connected between the two baffles and the baffle cylinder, the screen cylinder being provided with a plurality of screen holes, and the screen cylinder being provided with circumferentially equally spaced partitions.
[0006] Furthermore, more preferably, the shielding cylinder is provided with a plurality of strip-shaped holes, the edges of which are provided with cutting edges, the cutting edges of which are used to cut the material stuck in the screen holes of the screen cylinder.
[0007] Furthermore, more preferably, the screen cylinder is fixedly connected to a transmission ring, the transmission ring is provided with circumferentially evenly distributed protrusions, the bracket is slidably connected to a sliding rod, the bracket is fixedly connected to a second motor, the output shaft of the second motor is fixedly connected to a rotating disk, the rotating disk is rotatably connected to a connecting rod rotatably connected to the sliding rod, the sliding rod is hinged to a lever, a torsion spring is provided between the lever and the sliding rod, and the lever drives the transmission ring to rotate by pressing the protrusions.
[0008] Furthermore, more preferably, the highest point of the lever is located between the highest and lowest points of the protrusion on the lower side of the transmission ring.
[0009] Furthermore, more preferably, both baffles are fixedly connected to a fixing rod, and the fixing rod is slidably connected to an adjusting bucket, which is used to adjust the direction of the material.
[0010] Furthermore, more preferably, the rotating roller is provided with ribs along its axial direction, and the ribs on the two rotating rollers are staggered.
[0011] Furthermore, more preferably, the adjusting hopper is provided with a strip-shaped discharge hole, the width of which is greater than the width of the gap between the two rotating rollers, and the long side of the adjusting hopper discharge hole is spatially perpendicular to the axis of the two rotating rollers.
[0012] Furthermore, more preferably, the adjusting bucket is fixedly connected to a transmission rod, the transmission rod is slidably connected to the baffle near the transmission ring, and the transmission ring is fixedly connected to two sets of extrusion members, each set of extrusion members being circumferentially distributed, the two sets of extrusion members repeatedly extruding the transmission rod to cause the adjusting bucket to vibrate.
[0013] Furthermore, more preferably, the extruder is a triangular prism with an isosceles triangle base, and the extruders in different groups are staggered.
[0014] Furthermore, more preferably, the separator is rotatably connected to the screen cylinder, the baffle cylinder is fixedly connected to an extrusion strip, the separator is fixedly connected to an extrusion plate, the extrusion strip extrudes the extrusion plate to change the angle of the separator relative to the screen cylinder, the baffle is fixedly connected to a guide strip, the separator is provided with two extrusion parts, and the guide strip extrudes adjacent extrusion parts to control the angle of the separator.
[0015] Compared with the prior art, the present invention has the following advantages: The present invention separates materials with and without particle size through a screen cylinder, and drives the screen cylinder to rotate the separator. The separator transports the materials with non-standard particle size back to the upper side of the two rotating rollers for re-crushing, thereby improving the crushing efficiency and crushing effect of the device. In addition, the device has a high degree of integration, occupies a small area, and can also reduce production costs.
[0016] The reciprocating movement of the lever drives the reciprocating rotation of the transmission ring, thereby causing the screen cylinder to rotate repeatedly. This allows the material to fall through the screen holes of the screen cylinder, and the cutting edge at the strip hole on the shielding cylinder cuts off the material stuck in the screen holes, reducing the probability of screen hole blockage.
[0017] By adjusting the bucket to change the direction of the material being crushed in the secondary crushing process, the long strips or flakes of material fall perpendicular to the plane of the gap between the two rotating rollers, thus facilitating the crushing of the material and improving the crushing efficiency and effect of the device. At the same time, the adjusting bucket is shaken to facilitate the material falling from the discharge hole of the adjusting bucket. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the sliding rod and the second motor of the present invention; Figure 3 This is a three-dimensional structural diagram of the transmission rod and extrusion component of the present invention; Figure 4 This is a three-dimensional structural diagram of the extrusion strip and extrusion plate of the present invention; Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the guide strip and separator of the present invention.
[0019] The attached drawings include the following reference numerals: 1. Support, 2. Baffle, 201. Feed hopper, 202. Guide bar, 3. Rotating roller, 4. First motor, 5. Baffle cylinder, 501. Discharge hopper, 502. Strip hole, 6. Screen cylinder, 7. Divider, 701. Extrusion section, 8. Transmission ring, 801. Protrusion, 9. Sliding rod, 10. Second motor, 11. Rotating disk, 12. Connecting rod, 13. Pulley, 14. Torsion spring, 15. Fixing rod, 16. Adjusting hopper, 17. Transmission rod, 18. Extrusion component, 19. Extrusion bar, 20. Extrusion plate. Detailed Implementation
[0020] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, left, right, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.
[0021] Example 1 When existing equipment crushes white fused alumina, the roller crusher and screening machine are usually set up separately, requiring multiple auxiliary equipment such as lifting and conveying, which makes the crushing system complex, energy-intensive, and occupies a large area, which is not conducive to reducing the cost of white fused alumina crushing.
[0022] A raw material crushing and grinding equipment for white fused alumina production, such as Figures 1-4 As shown, the device includes a support frame 1, with two circular baffles 2 fixedly attached to the upper side of the support frame 1. The two baffles 2 are rotatably connected to two rotating rollers 3. A feed hopper 201 is provided on the front baffle 2 for loading white corundum crushed by a jaw crusher. A first motor 4 and a baffle cylinder 5 are fixedly connected to the support frame 1. The output shaft of the first motor 4 is fixedly connected to the rotating roller 3 on the right side. The two rotating rollers 3 are driven by a gear set. A discharge hopper 501 is provided on the baffle cylinder 5. The crushed particle size reaches... The target material is discharged from the discharge hopper 501. A screen cylinder 6 is rotatably connected between the two baffles 2 and the shielding cylinder 5. The screen cylinder 6 is provided with several screen holes. The shielding cylinder 5 is used to shield the screen holes of the screen cylinder 6, so that the material can only leak out from the discharge hopper 501. The screen cylinder 6 is provided with circumferentially evenly distributed separators 7. In this embodiment, the separators 7 and the screen cylinder 6 can be regarded as fixedly connected. The separators 7 are used to catch the material that does not meet the particle size standard when the screen cylinder 6 rotates, and transport the material back to the upper side of the two rotating rollers 3 for crushing. The shielding cylinder 5 is provided with several strip holes 502. The edges of the strip holes 502 are provided with cutting edges. The cutting edges of the strip holes 502 are used to cut the material stuck in the screen holes of the screen cylinder 6, thereby keeping the screen holes of the screen cylinder 6 unobstructed and ensuring the normal operation of the screening function of the screen cylinder 6.
[0023] like Figures 1-3 and Figure 5 As shown, a transmission ring 8 is fixedly connected to the rear side of the screen cylinder 6. The transmission ring 8 is provided with circumferentially spaced protrusions 801. A sliding rod 9 is slidably connected to the bracket 1. A second motor 10 is fixedly connected to the bracket 1. A rotating disk 11 is fixedly connected to the output shaft of the second motor 10. A connecting rod 12, which is rotatably connected to the sliding rod 9, is eccentrically connected to the rotating disk 11. When the output shaft of the second motor 10 drives the rotating disk 11 to rotate, the rotating disk 11 can drive the sliding rod 9 to move back and forth. A lever 13 is hinged to the sliding rod 9. A torsion spring 14 is provided between the lever 13 and the sliding rod 9. The lever 13 drives the transmission ring 8 to rotate by squeezing the protrusions 801. The highest point of lever 13 is located between the highest and lowest points of the protrusion 801 on the lower side of transmission ring 8. When lever 13 moves to the right and contacts protrusion 801, lever 13 will rotate counterclockwise until it is blocked by transmission ring 8. When lever 13 moves to the left and contacts protrusion 801, lever 13 will rotate clockwise until it is blocked by sliding rod 9.
[0024] When using this device to crush white fused alumina, first place the device at the work site, then start the first motor 4 and the second motor 10. The output shaft of the first motor 4 drives the right rotating roller 3 to rotate, and the right rotating roller 3 drives the left rotating roller 3 to rotate through the gear set. Then, white fused alumina is added into the feed hopper 201. After being crushed by the two rotating rollers 3, the white fused alumina falls to the lower side of the screen cylinder 6. The output shaft of the second motor 10 drives the rotating disk 11 to rotate, and the rotating disk 11 drives the sliding rod 9 to move back and forth left and right through the connecting rod 12. The sliding rod 9 drives the lever 13 to move, and the lever 13 moves to the right. When the lever 13 pushes the protrusion 801 on the lower side, it causes the transmission ring 8 to rotate counterclockwise. When the lever 13 pushes the protrusion 801, the lever 13 slides upward along the protrusion 801 and rotates relative to the sliding rod 9, causing the torsion spring 14 to store force. Until the connection between the protrusion 801 and the transmission ring 8, the lever 13 is blocked by the transmission ring 8 and cannot continue to slide along the protrusion 801. During the rotation of the transmission ring 8, the lever 13 is pressed against the connection between the transmission ring 8 and the protrusion 801. As the transmission ring 8 rotates, the lever 13 also rotates together until the lever 13 rotates to a vertical position and is blocked by the sliding rod 9. Then the sliding rod 9 continues to drive the lever 13. As lever 13 moves to separate from protrusion 801, lever 13 rotates under the action of torsion spring 14. At this time, sliding rod 9 moves to the left and drives lever 13 to press protrusion 801 located to the left of the original lower protrusion 801. Simultaneously, lever 13 rotates due to the pressure of protrusion 801 until lever 13 is blocked by sliding rod 9. Then, lever 13 drives transmission ring 8 to rotate clockwise. Since the highest point of lever 13 is lower than its highest point when it moves to the right, the clockwise rotation angle of transmission ring 8 is smaller than the counterclockwise rotation angle when lever 13 and protrusion 801 separate. After separating from the protrusion 801, the lever 13 rotates under the action of the torsion spring 14, so that the highest point of the lever 13 is higher than the protrusion 801, so that when the lever 13 moves to the right again, it can push the protrusion 801. The above process is repeated, so that the transmission ring 8 reciprocates, but the whole rotates counterclockwise, which makes it easier for the transmission ring 8 to drive the screen cylinder 6 to screen the crushed white corundum. At the same time, the screen cylinder 6 transports the material whose particle size cannot pass through the screen hole on the screen cylinder 6 to the upper side of the two rotating rollers 3 through the separator 7 and puts it down for re-crushing. When the crushing is completed, the first motor 4 and the second motor 10 can be turned off.
[0025] Example 2 Based on Example 1, such as Figure 4As shown, two baffles 2 are jointly fixed to two fixing rods 15, and the two fixing rods 15 are jointly slidably connected to an adjusting hopper 16. The adjusting hopper 16 is used to adjust the direction of the material, thereby facilitating the crushing of the material by the rotating rollers 3. The adjusting hopper 16 is higher than the feed hopper 201, so that the material added from the feed hopper 201 will not enter the adjusting hopper 16. The rotating rollers 3 are provided with convex ribs along their axial direction, and the convex ribs on the two rotating rollers 3 are staggered, thereby reducing the probability of the material slipping between the two rotating rollers 3 and ensuring crushing efficiency. The adjusting hopper 16 is provided with two strip-shaped discharge holes. The width of the discharge holes of the adjusting hopper 16 is greater than the width of the gap between the two rotating rollers 3, and the long side of the discharge holes of the adjusting hopper 16 is spatially perpendicular to the axis of the two rotating rollers 3, thereby reducing the probability of the material passing directly through the gap between the two rotating rollers 3 and ensuring the crushing effect of the two rotating rollers 3 on the material.
[0026] like Figures 2-4 As shown, a transmission rod 17 is fixedly connected to the adjusting hopper 16. The transmission rod 17 consists of a square rod and a round rod. The transmission rod 17 is slidably connected to the rear baffle 2. Two sets of extrusion members 18 are fixedly connected to the transmission ring 8. Each set of extrusion members 18 consists of circumferentially distributed extrusion members 18. The two sets of extrusion members 18 repeatedly squeeze the transmission rod 17, causing the adjusting hopper 16 to vibrate, thus facilitating the material to fall from the discharge hole of the adjusting hopper 16. The extrusion members 18 are triangular prisms with isosceles triangular bases. Different sets of extrusion members 18 are staggered, causing the extrusion members 18 to squeeze the transmission rod 17, making the transmission rod 17 move back and forth.
[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the separator 7 is rotatably connected to the screen cylinder 6. Two extrusion strips 19 are fixed to the upper right side of the baffle cylinder 5. The separator 7 is fixed with two front and rear extrusion plates 20. The extrusion strips 19 extrude the adjacent extrusion plates 20, changing the angle of the separator 7 relative to the screen cylinder 6, thereby preventing the material on the separator 7 from falling off as the separator 7 rotates to the upper side with the screen cylinder 6. The baffle 2 is fixed with a guide strip 202. The left part of the guide strip 202 is a horizontal straight rod, and the right part is a circular arc rod, with the center of the circle corresponding to the circular arc rod located in the screen cylinder. On the axis of 6, the separator 7 is provided with two extrusion parts 701. The guide bar 202 extrudes the adjacent extrusion parts 701 to control the angle of the separator 7. When the extrusion bar 19 and the extrusion plate 20 separate, the corresponding separator 7 will rotate under the action of gravity and maintain a vertical state. As the screen cylinder 6 rotates with the separator 7 to the lower left side, the separator 7 will stick to the inner wall of the screen cylinder 6. At this time, the guide bar 202 can extrude the extrusion parts 701 to lift the separator 7 so that the separator 7 can hold the material for transfer.
[0028] Before the separator 7 transports the material with substandard particle size to the upper side of the two rotating rollers 3, the screen cylinder 6 drives the separator 7, which is attached to its inner wall, to rotate. Then, the guide bar 202 squeezes the extrusion part 701 to lift the separator 7. After that, the separator 7 catches the material and moves. After the extrusion part 701 separates from the guide bar 202, the extrusion plate 20 is squeezed by the extrusion bar 19. The extrusion plate 20 drives the separator 7 to rotate relative to the screen cylinder 6, thereby catching the material and reducing the probability of the separator 7 falling off during the material transport process. When the material moves to the upper side of the two rotating rollers 3, it falls into the adjusting hopper 16, so that the long strip or sheet-like material falls perpendicular to the vertical plane where the gap between the two rotating rollers 3 is located, improving the efficiency of the device in crushing materials. At the same time, when the transmission ring 8 reciprocates, it drives the extrusion part 18 to move, so that several extrusion parts 18 alternately squeeze the transmission rod 17. The transmission rod 17 drives the adjusting hopper 16 to move back and forth, so that the material can be discharged from the discharge hole of the adjusting hopper 16.
[0029] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A raw material crushing and grinding device for white corundum production, comprising a support (1), wherein the support (1) is fixedly connected to two baffles (2), the two baffles (2) are rotatably connected to two rotating rollers (3), and one of the baffles (2) is provided with a feed hopper (201), characterized in that: It also includes a first motor (4) and a shielding cylinder (5). The first motor (4) and the shielding cylinder (5) are both fixed to the bracket (1). The output shaft of the first motor (4) is fixed to one of the rotating rollers (3). The two rotating rollers (3) are driven by a gear set. The shielding cylinder (5) is provided with a discharge hopper (501). A screen cylinder (6) is rotatably connected between the two baffles (2) and the shielding cylinder (5). The screen cylinder (6) is provided with a number of screen holes. The screen cylinder (6) is provided with circumferentially evenly distributed separators (7).
2. The raw material crushing and grinding equipment for white fused alumina production according to claim 1, characterized in that: The shielding cylinder (5) is provided with a plurality of strip holes (502), and the edges of the strip holes (502) are provided with cutting edges. The cutting edges of the strip holes (502) are used to cut the material stuck in the screen holes of the screen cylinder (6).
3. The raw material crushing and grinding equipment for white fused alumina production according to claim 2, characterized in that: The screen cylinder (6) is fixedly connected to a transmission ring (8), the transmission ring (8) is provided with circumferentially evenly distributed protrusions (801), the bracket (1) is slidably connected to a sliding rod (9), the bracket (1) is fixedly connected to a second motor (10), the output shaft of the second motor (10) is fixedly connected to a rotating disk (11), the rotating disk (11) is rotatably connected to a connecting rod (12) rotatably connected to the sliding rod (9), the sliding rod (9) is hinged to a lever (13), a torsion spring (14) is provided between the lever (13) and the sliding rod (9), the lever (13) drives the transmission ring (8) to rotate by squeezing the protrusions (801).
4. The raw material crushing and grinding equipment for white fused alumina production according to claim 3, characterized in that: The highest point of the lever (13) is located between the highest and lowest points of the protrusion (801) on the lower side of the transmission ring (8).
5. The raw material crushing and grinding equipment for white fused alumina production according to claim 3, characterized in that: The two baffles (2) are fixedly connected to a fixing rod (15), and the fixing rod (15) is slidably connected to an adjusting bucket (16), which is used to adjust the direction of the material.
6. The raw material crushing and grinding equipment for white fused alumina production according to claim 5, characterized in that: The rotating roller (3) is provided with ridges along its axial direction, and the ridges on the two rotating rollers (3) are staggered.
7. The raw material crushing and grinding equipment for white fused alumina production according to claim 5, characterized in that: The adjusting hopper (16) is provided with a strip-shaped discharge hole. The width of the discharge hole of the adjusting hopper (16) is greater than the width of the gap between the two rotating rollers (3), and the long side of the discharge hole of the adjusting hopper (16) is spatially perpendicular to the axis of the two rotating rollers (3).
8. The raw material crushing and grinding equipment for white fused alumina production according to claim 7, characterized in that: The adjusting bucket (16) is fixedly connected to a transmission rod (17), which is slidably connected to the baffle (2) near the transmission ring (8). The transmission ring (8) is fixedly connected to two sets of extrusion members (18), each set of extrusion members (18) being circumferentially distributed. The two sets of extrusion members (18) repeatedly extrude the transmission rod (17), causing the adjusting bucket (16) to vibrate.
9. A raw material crushing and grinding device for white fused alumina production according to claim 8, characterized in that: The extrusion piece (18) is a triangular prism with an isosceles triangle base, and the extrusion pieces (18) in different groups are staggered.
10. A raw material crushing and grinding device for white fused alumina production according to claim 8, characterized in that: The separator (7) is rotatably connected to the screen cylinder (6). The shielding cylinder (5) is fixedly connected to an extrusion strip (19). The separator (7) is fixedly connected to an extrusion plate (20). The extrusion strip (19) extrudes the extrusion plate (20) to change the angle of the separator (7) relative to the screen cylinder (6). The baffle (2) is fixedly connected to a guide strip (202). The separator (7) is provided with two extrusion parts (701). The guide strip (202) extrudes the adjacent extrusion parts (701) to control the angle of the separator (7).