A double-roll mill for corundum production

Abstract

This utility model relates to the field of crushing and grinding equipment technology, and in particular to a double-roll mill for corundum production. It includes a frame, with a roller hopper fixed inside the frame. An adjustment mechanism is provided on the front side of the roller hopper, and a double-roll mechanism is located in the middle of the roller hopper. It also includes an impact mechanism, a discharge plate, and a discharge hopper. A cam frame follows the rotation of the pressure rollers, causing the pusher frame and impact seat to move upwards periodically. The pusher frame then drives the impact seat downwards to push the corundum particles stuck between the two pressure rollers, reducing the number of corundum particles between them. Simultaneously, as the pusher frame moves up and down, the sliding of the discharge plate controls the corundum particles discharged from the discharge hopper, thus preventing an increase in the number of corundum particles stuck between the two pressure rollers. Furthermore, the impact seat effectively prevents some corundum particles from flying upwards from the compression position of the two pressure rollers during corundum compression.

Description

Technical Field

[0001] This utility model relates to the field of crushing and grinding equipment, and in particular to a double roller mill for corundum production. Background Technology

[0002] Corundum is an oxide mineral, mainly composed of aluminum oxide. It comes in various colors, including colorless, gray, yellowish-gray, and blue. It has a Mohs hardness of nine, is transparent or translucent, and has a vitreous luster. Corundum is widely used in metallurgy, machinery, chemical industry, electronics, aerospace, and defense industries. It is mainly used in the production of high-grade abrasive materials. During the production of brown corundum, it needs to be crushed by roller pressing to facilitate subsequent processing and use.

[0003] According to the patent document with announcement number CN222000230U, corundum is fed by vibrating the hopper, and then the material falls from the left end of the vibrating hopper into the feed port. The material then falls into the middle of the rollers in the roller mill body and is crushed by the rollers in the roller mill body.

[0004] The patent document describes a process where, during the roller crushing of corundum, the two rollers compress the corundum, breaking it into small pieces. Some of these small corundum particles may fly out from above the two rollers due to uneven force, causing some corundum particles to eject outwards during the roller crushing process, which is extremely dangerous. At the same time, some corundum particles may get stuck between the two rolling rollers and not be crushed, thus affecting the subsequent roller crushing process of corundum. Utility Model Content

[0005] The purpose of this invention is to provide a double-roll mill for corundum production in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A double-roll mill for corundum production includes a frame, a roller hopper fixed inside the frame, an adjustment mechanism on the front side of the roller hopper, a double-roll mechanism in the middle of the roller hopper, an impact mechanism, a discharge plate and a discharge hopper. The impact mechanism is located on the upper side of the roller hopper, the discharge hopper is fixed on one side of the frame, and the discharge plate is slidably connected to the discharge end of the discharge hopper.

[0008] The impact mechanism includes two cam frames, with a pusher frame on the upper side of the two cam frames. An impact seat is fixed at the upper end of the pusher frame. The impact seat is located directly above the middle position of the roller bucket. A vertical slide groove is opened at the middle position of the rear side of the frame. A slide seat for sliding in the vertical slide groove is opened at the lower end of the pusher frame.

[0009] Preferably, the roller mechanism includes two pressure rollers, each pressure roller has a front movable seat rotatably connected to its front side, and each pressure roller has a rear movable seat rotatably connected to its rear side. Each front movable seat has a roller motor fixed at its front end for driving the pressure roller to rotate.

[0010] Preferably, the front and rear sides of the frame are provided with horizontal slide grooves for the horizontal sliding of the front moving seat and the roller motor, and the cam frame is fixedly connected to the rear end of the pressure roller.

[0011] Preferably, the adjustment mechanism includes a first screw and a second screw. The first screw is rotatably connected to the front side of the frame, and the second screw is rotatably connected to the rear side of the frame. An adjustment motor is fixedly installed at the input end of the first screw, and guide rods are slidably connected to the lower ends of the two front moving seats and the two rear moving seats.

[0012] Preferably, the upper ends of the two front movable seats are threadedly connected to the first screw, and the upper ends of the two rear movable seats are threadedly connected to the second screw. The ends of the first and second screws away from the adjusting motor are driven by a chain.

[0013] Preferably, a support plate is fixed to the upper end of the feeding plate, the upper end of the support plate is located above the impact seat, a spring is fixed to the end of the support plate near the feeding hopper, and the lower end of the spring is fixed to the upper side of the discharge end of the feeding hopper.

[0014] Preferably, the front and rear sides of the roller press bucket are fixed with side plates, the lower ends of the two side plates are fixed to the front and rear sides inside the frame respectively, and each side plate is provided with a through groove for the two press rollers to slide horizontally.

[0015] The advantages compared to existing technologies are as follows: the cam frame follows the rotation of the pressure rollers, causing the pusher frame and impact seat to move upward periodically. Then, the pusher frame drives the impact seat downward to push the corundum particles stuck between the two pressure rollers, reducing the number of corundum particles stuck between the two pressure rollers. At the same time, when the pusher frame moves up and down, the sliding of the discharge plate controls the corundum particles discharged from the discharge hopper, thereby preventing an increase in the number of corundum particles stuck between the two pressure rollers. In addition, the impact seat can effectively prevent some corundum particles from flying upward from the compression position of the two pressure rollers when the corundum is squeezed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a double-roll mill for corundum production according to the present invention;

[0018] Figure 2 This is a rear view of a double-roll mill for corundum production according to the present invention;

[0019] Figure 3 This is a side view of a double-roll mill for corundum production according to the present invention;

[0020] Figure 4 This is a schematic diagram of the roller mechanism of a roller mill for corundum production as described in this utility model;

[0021] Figure 5 yes Figure 2 Sectional view at point AA;

[0022] Figure 6 yes Figure 3 Sectional view at point BB;

[0023] Figure 7 This is a schematic diagram of the roller pressing bucket structure of a double roller mill for corundum production according to the present invention;

[0024] Figure 8 This is a schematic diagram of the adjustment mechanism of a double roller mill for corundum production according to the present invention;

[0025] Figure 9 This is a schematic diagram of the cam frame structure of a double roller mill for corundum production according to the present invention;

[0026] Figure 10 This is a schematic diagram of the frame structure of a double-roll mill for corundum production according to the present invention;

[0027] Figure 11 This is a schematic diagram of the impact mechanism of a double roller mill for corundum production, as described in this utility model.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Roller mechanism; 2. Adjustment mechanism; 3. Roller hopper; 4. Impact mechanism; 5. Feeding plate; 6. Feeding hopper; 7. Frame; 11. Pressure roller; 12. Front moving seat; 13. Roller motor; 14. Rear moving seat; 21. Adjustment motor; 22. First screw; 23. Guide slide bar; 24. Second screw; 41. Cam frame; 42. Pushing frame; 43. Impact seat. Detailed Implementation

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] like Figures 1-11 As shown, a double-roll mill for corundum production includes a frame 7, a roller pressing hopper 3 fixed inside the frame 7, an adjustment mechanism 2 on the front side of the roller pressing hopper 3, a double-roll mechanism 1 in the middle of the roller pressing hopper 3, an impact mechanism 4, a discharge plate 5, and a discharge hopper 6. The impact mechanism 4 is located on the upper side of the roller pressing hopper 3, the discharge hopper 6 is fixed on one side of the frame 7, the discharge plate 5 is slidably connected to the discharge end of the discharge hopper 6, and a vibration motor for accelerating the discharge is fixed at the bottom of the discharge hopper 6.

[0033] In this embodiment: the impact mechanism 4 includes two cam frames 41, and a pusher frame 42 is provided on the upper side of the two cam frames 41. An impact seat 43 is fixed on the upper end of the pusher frame 42. The impact seat 43 is located directly above the middle position of the roller pressing bucket 3. A vertical slide groove is opened in the middle position of the rear side of the frame 7. A slide seat for sliding in the vertical slide groove is opened at the lower end of the pusher frame 42. The pusher frame 42 is pushed upward by the counter-rotation of the two cam frames 41. At this time, the slide seat of the pusher frame 42 will move up and down in the vertical slide groove of the frame 7, thereby driving the impact seat 43 to move up and down synchronously through the pusher frame 42. Then, the impact seat 43 is used to squeeze the corundum particles stuck at the roller mechanism 1 downward, so as to prevent the corundum particles from getting stuck at the roller mechanism 1.

[0034] In this embodiment: the roller mechanism 1 includes two pressure rollers 11. Each pressure roller 11 is rotatably connected to a front moving seat 12 on its front side and to a rear moving seat 14 on its rear side. Each front moving seat 12 has a roller pressing motor 13 fixed at its front end for driving the pressure roller 11 to rotate. The front and rear sides of the frame 7 are provided with horizontal sliding grooves for the front moving seat 12 and the roller pressing motor 13 to slide horizontally. The cam frame 41 is fixedly connected to the rear end of the pressure roller 11. The two roller pressing motors 13 are used to drive their respective pressure rollers 11 to rotate, thereby causing the two pressure rollers 11 to rotate against each other, thereby crushing the corundum particles that enter between the two pressure rollers 11.

[0035] In this embodiment: the adjustment mechanism 2 includes a first screw 22 and a second screw 24. The first screw 22 is rotatably connected to the front side of the frame 7, and the second screw 24 is rotatably connected to the rear side of the frame 7. An adjustment motor 21 is fixedly installed at the input end of the first screw 22. Guide slide rods 23 are slidably connected to the lower ends of the two front moving seats 12 and the two rear moving seats 14. The upper ends of the two front moving seats 12 are threadedly connected to the first screw 22, and the upper ends of the two rear moving seats 14 are threadedly connected to the second screw 24. The ends of the first screw 22 and the second screw 24 away from the adjustment motor 21 are driven by a chain. The rotating part of the adjustment motor 21 drives the first screw 22 to rotate. The first screw 22 drives the second screw 24 to rotate synchronously through the chain drive. The rotation of the first screw 22 and the second screw 24 drives the two front moving seats 12 and the two rear moving seats 14 to move towards the middle position, thereby causing the two pressure rollers 11 to move closer to each other or further away.

[0036] In this embodiment: a support plate is fixed to the upper end of the feeding plate 5. The upper end of the support plate is located above the impact seat 43. A spring is fixed to the end of the support plate near the feeding hopper 6. The lower end of the spring is fixed to the upper side of the discharge end of the feeding hopper 6. The upward movement of the pusher 42 pushes the support plate. At the same time, the support plate drives the feeding plate 5 to move upward, so that the corundum particles in the feeding hopper 6 fall from the discharge end into the space between the two pressure rollers 11. At the same time, the spring on the lower side of the support plate is stretched. When the pusher 42 moves downward, the stretched spring pulls the support plate to insert the feeding plate 5 back into the discharge end of the feeding hopper 6, thereby stopping the discharge of corundum particles in the feeding hopper 6.

[0037] In this embodiment: the front and rear sides of the roller pressing bucket 3 are fixed with side plates. The lower ends of the two side plates are respectively fixed to the front and rear sides inside the frame 7. Each side plate is provided with a through groove for the two pressing rollers 11 to slide horizontally. The roller pressing bucket 3 and the two side plates at its bottom are used to position the corundum particles between the two pressing rollers 11.

[0038] Working principle: When in use, first pour the corundum particles that need to be crushed into the discharge hopper 6, and then the corundum particles in the discharge hopper 6 will be blocked by the discharge baffle 5 at the discharge end of the discharge hopper 6.

[0039] Then, the rotating part of the motor 21 is adjusted to drive the first screw 22 to rotate. The second screw 24 is driven to rotate synchronously with the first screw 22 through the chain transmission. The rotation of the first screw 22 and the second screw 24 drives the two front moving seats 12 and the two rear moving seats 14 to move along the horizontal slide groove of the frame 7, so that the two pressure rollers 11 move closer or further away from each other. Then the distance between the two pressure rollers 11 is adjusted.

[0040] After the distance between the two pressure rollers 11 is adjusted, the roller motors 13 on the front side of the two front moving seats 12 drive their respective pressure rollers 11 to rotate. The two pressure rollers 11 rotate in opposite directions to achieve the counter-rotation of the corundum particles. During this process, the cam frames 41 on the rear side of the two pressure rollers 11 follow them and rotate synchronously. When the two cam frames 41 rotate, they will push the pusher frame 42 upward at the same time. At this time, the slide at the lower end of the pusher frame 42 will move upward along the vertical slide groove of the frame 7. During this process, the impact seat 43 will also move upward with the pusher frame 42.

[0041] As the pusher 42 moves upward, the top of the pusher 42 pushes the support plate of the feeding plate 5, causing the support plate to drive the feeding plate 5 to slide upward from the discharge end of the feeding hopper 6. At this time, the feeding plate 5 releases the corundum particles in the feeding hopper 6 from the discharge end and allows the corundum particles to fall into the middle position of the roller press hopper 3. During this process, the vibration motor at the bottom of the feeding hopper 6 starts synchronously to accelerate the falling of the corundum particles. In addition, the roller press hopper 3 and its two side plates at the bottom are used to position the corundum particles between the two press rollers 11. At the same time, the opposing rotation of the two press rollers 11 performs roller pressing and crushing treatment on the corundum particles.

[0042] When the two cam frames 41 stop pushing the pusher frame 42 upward, the pusher frame 42 will move downward along the vertical slide. The downward moving pusher frame 42 will drive the impact seat 43 to impact downward, thereby pushing the corundum particles stuck between the two pressure rollers 11, thus preventing some corundum particles from getting stuck between the two pressure rollers 11. In addition, the support plate of the discharge plate 5 is no longer pushed upward. At this time, the spring on the support plate will pull the discharge plate 5 downward, thereby blocking the discharge end of the discharge hopper 6, thus preventing corundum particles from falling between the pressure rollers 11 when the impact seat 43 falls, and reducing the number of corundum particles stuck between the pressure rollers 11.

[0043] In addition, when the pressure roller 11 squeezes large corundum particles, the lower end of the impact seat 43 blocks most of the small corundum fragments ejected when the corundum particles break. In addition, another part of the corundum will hit the two sides of the impact seat 43, and the kinetic energy of the small corundum fragments will be reduced by the arc-shaped surfaces on both sides of the impact seat 43.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pair of rollers for corundum production, comprising a frame (7), a roller press hopper (3) is fixed inside the frame (7), an adjusting mechanism (2) is arranged on the front side of the roller press hopper (3), a pair of roller mechanism (1) is arranged at the middle position of the roller press hopper (3), characterized in that: It also includes an impact mechanism (4), a discharge plate (5) and a discharge hopper (6). The impact mechanism (4) is located on the upper side of the roller press hopper (3). The discharge hopper (6) is fixed on one side of the frame (7). The discharge plate (5) is slidably connected to the discharge end of the discharge hopper (6). The impact mechanism (4) includes two cam frames (41), and a pusher frame (42) is provided on the upper side of the two cam frames (41). An impact seat (43) is fixed at the upper end of the pusher frame (42). The impact seat (43) is located directly above the middle position of the roller bucket (3). A vertical slide groove is provided at the middle position of the rear side of the frame (7). A slide seat for sliding in the vertical slide groove is provided at the lower end of the pusher frame (42).

2. The double roll mill for corundum production according to claim 1, characterized in that: The roller mechanism (1) includes two pressure rollers (11). Each pressure roller (11) is rotatably connected to a front moving seat (12) on its front side and to a rear moving seat (14) on its rear side. Each front moving seat (12) has a roller motor (13) fixed at its front end for driving the pressure roller (11) to rotate.

3. The double roll mill for corundum production according to claim 2, characterized in that: The frame (7) is provided with horizontal sliding grooves on both the front and rear sides for the horizontal sliding of the front moving seat (12) and the roller motor (13), and the cam frame (41) is fixedly connected to the rear end of the pressure roller (11).

4. The double roll mill for corundum production according to claim 2, characterized in that: The adjustment mechanism (2) includes a first screw (22) and a second screw (24). The first screw (22) is rotatably connected to the front side of the frame (7), and the second screw (24) is rotatably connected to the rear side of the frame (7). An adjustment motor (21) is fixedly installed at the input end of the first screw (22). Guide slide rods (23) are slidably connected to the lower ends of the two front moving seats (12) and the two rear moving seats (14).

5. The pair of rolls for corundum production according to claim 4, characterized in that: The upper ends of the two front moving seats (12) are threaded to the first screw (22), and the upper ends of the two rear moving seats (14) are threaded to the second screw (24). The ends of the first screw (22) and the second screw (24) away from the adjusting motor (21) are driven by a chain.

6. The double roll mill for corundum production according to claim 1, characterized in that: The upper end of the feeding plate (5) is fixed with a support plate. The upper end of the support plate is located above the impact seat (43). A spring is fixed at one end of the support plate near the feeding hopper (6). The lower end of the spring is fixed on the upper side of the discharge end of the feeding hopper (6).

7. The double roll mill for corundum production according to claim 2, characterized in that: The roller pressure bucket (3) has side plates fixed on both the front and rear sides. The lower ends of the two side plates are fixed to the front and rear sides inside the frame (7), respectively. Each side plate has a through groove for allowing the two pressure rollers (11) to slide horizontally.

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