White corundum fine-grained multi-stage crushing screen device
By using a multi-stage crushing and screening structure combined with material drying, the problem of insufficient screening and grinding in traditional equipment is solved, achieving efficient refining and separation of white corundum materials, thus improving production efficiency and product quality.
Patent Information
- Application Number
- CN202521944746.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-10
AI Technical Summary
Traditional screening devices have a single function, requiring multiple screenings to achieve different particle size requirements. They are costly, occupy a large area, and cause insufficient grinding and material adhesion, leading to screen blockage and reduced production efficiency.
The design incorporates a multi-stage crushing and screening structure, utilizing crushing rollers and gear meshing to achieve multiple crushing operations. Combined with multi-layer vibrating screen screening and a material drying mechanism, the material is gradually refined and separated into different particle sizes.
It improves the fineness of crushing and screening efficiency, reduces equipment costs and floor space, avoids material adhesion and screen clogging, and enhances product quality and applicability.
Smart Images
Figure CN224672810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multi-stage pulverization and screening technology, specifically to a multi-stage pulverization and screening device for refining white corundum. Background Technology
[0002] White fused alumina, a synthetic abrasive, is made from industrial alumina powder. It is produced by melting the powder in an electric arc at temperatures exceeding 2000 degrees Celsius and then cooling it. After crushing, shaping, and magnetic separation to remove iron, it needs to be sieved into various particle sizes to meet different application requirements. The sieving process is crucial in the production and processing of white fused alumina. However, traditional sieving devices have several problems. Some sieving devices are not functionally complete, only capable of sieving materials of the same specification. To achieve different sieving purposes, multiple devices with different sieving specifications need to be set up, and multiple sieving processes are required to obtain the white fused alumina product that meets the usage conditions. This not only increases equipment costs and floor space requirements but also reduces production efficiency. Furthermore, during the grinding process, due to equipment limitations, insufficient grinding may occur, resulting in powder containing larger particles. These large particles are difficult to process later and need to be re-ground. The traditional method is to first sieve the powder after grinding, and then re-grind the larger particles. This process requires two steps, increasing workload and reducing the efficiency of sieving and secondary grinding. Furthermore, white fused alumina may absorb moisture from the environment during storage or transportation, leading to an increase in moisture content. In some production processes, white fused alumina raw materials are washed with water. However, if the material has too high a moisture content, the sieve holes are easily clogged due to material adhesion during screening, reducing the grading accuracy. Therefore, those skilled in the art propose a technical solution to address this issue: a multi-stage pulverizing sieve device for refining white fused alumina. Utility Model Content
[0003] The purpose of this utility model is to provide a technical solution for a multi-stage pulverizing and screening device for refining white corundum, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following: The device includes a multi-stage crushing structure, with a multi-stage screening structure placed on the ground at the bottom. A material drying mechanism is fixedly connected to the top surface of the multi-stage crushing structure. The multi-stage crushing structure includes 2-3 layers of crushing chambers stacked and fixed to each other, and a pair of crushing blade rollers rotatably connected to the inner cavity of the crushing chambers. A motor is fixedly connected to the left side wall of each crushing chamber. The output shaft of the motor is fixedly connected to the outer end of the rear crushing blade rollers through a coupling. The crushing blade rollers located outside the crushing chambers are fixed with meshing gears. The multi-stage screening structure includes a support base, a collection basket fixed to the top surface of the support base, and 3-4 layers of screen baskets stacked and locked to the top surface of the collection basket. The top end of the uppermost screen basket is locked with a basket cover, and a discharge chute is fixedly connected to the side wall of each screen basket. A screen is fixedly connected to the inner cavity of each screen basket. Support frames are fixedly connected to the left and right sides of the crushing chamber, and the bottom legs of the support frames are locked to the ground by bolts. The material drying mechanism includes a square cover fixed to the top port of the crushing chamber, a hopper fixed in the inner cavity of the square cover, and electric heating wires fixed on the left and right sides of the hopper. A fan is embedded in the top of the right side wall of the square cover.
[0004] As a preferred embodiment of this utility model: the left side wall of the crushing chamber is provided with holes for the left section of the crushing roller to pass through, and bearings adapted to rotate with the left section of the crushing roller are installed in the holes.
[0005] As a preferred embodiment of this utility model, the gears mesh with each other to drive the crushing rollers to rotate inwards and crush the white corundum material.
[0006] As a preferred embodiment of this utility model, the particle size of the crushing roller decreases sequentially from top to bottom, which is used to crush and refine the white corundum material through multiple crushing processes.
[0007] As a preferred embodiment of this utility model: a hopper is fixedly connected to the bottom port of the crushing chamber, and a discharge pipe is fixedly connected to the bottom port of the hopper.
[0008] As a preferred embodiment of this utility model, the top end of the basket cover is fixedly connected to the bottom end of the feed tube.
[0009] As a preferred embodiment of this utility model, the mesh size of the screen decreases sequentially from top to bottom, and is used for multi-stage screening of white corundum materials of different particle sizes.
[0010] As a preferred embodiment of this utility model, a vibration motor is installed on both the left and right side walls of the support base.
[0011] As a preferred embodiment of this utility model, the discharge troughs are arranged in a staggered circular array, and the inner ports of the discharge troughs are flush with the top end face of the screen.
[0012] As a preferred embodiment of this utility model: a sliding gate is inserted into the bottom port of the hopper, and a pull rod is fixed to the right side of the gate, extending through to the right side of the square cover. An opening for the fan to be installed is provided on the top of the right side wall of the square cover. A mesh is fixed inside the opening, and the fan is used to extract the water vapor generated after drying and discharge it outward. The power input terminal of the electric heating wire is electrically connected to an external power source through a wire.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: In the multi-stage crushing structure, an electric motor drives the crushing rollers to rotate, and gear meshing enables a pair of crushing rollers to rotate inward, initially crushing the white fused alumina material. Due to the multi-stage design, the particle size in subsequent crushing chambers is even smaller, and the material can pass through each layer sequentially, achieving multiple stages of progressively finer crushing, effectively improving the crushing precision. In the multi-stage screening structure, multiple layers of screen baskets are stacked on the support base. Each screen basket contains a screen with a different mesh size, decreasing from top to bottom. Under the vibration generated by the vibrating motor, white fused alumina material of different particle sizes can pass through the corresponding screen mesh, achieving multi-stage screening and separating materials of different particle sizes, further improving the fineness of the material, meeting the usage requirements for white fused alumina of different particle sizes, and improving product quality and applicability. Moreover, the material drying mechanism can dry the white fused alumina raw material before crushing, preventing excessive moisture from affecting the crushing and screening effects. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0015] Figure 1 This is a schematic diagram of the multi-stage crushing and screening mechanism. Figure 2 This is a schematic diagram of a multi-stage crushing structure; Figure 3 This is a schematic diagram of a multi-stage screening structure; Figure 4 This is a schematic diagram of a material drying mechanism.
[0016] Explanation of reference numerals in the attached figures: 1. Multi-stage crushing structure; 101. Crushing chamber; 102. Crushing roller; 103. Gear; 104. Motor; 105. Feed pipe; 106. Hopper; 2. Multi-stage screening structure; 201. Support base; 202. Collection basket; 203. Vibrating motor; 204. Screen basket; 205. Screen mesh; 206. Basket cover; 207. Discharge chute; 3. Material drying mechanism; 301. Square cover; 302. Discharge nozzle; 303. Gate plate; 304. Electric heating wire; 305. Pull rod; 306. Fan; 307. Mesh cloth; 4. Support frame. Detailed Implementation
[0017] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.
[0018] Example 1: In this multi-stage pulverizing screen device for refining white corundum, the multi-stage pulverizing structure 1 includes two stacked and fixed pulverizing chambers 101. A pair of pulverizing rollers 102 are rotatably connected to the inner cavity of each pulverizing chamber 101. Support frames 4 are fixedly connected to the left and right sides of the pulverizing chamber 101, and the bottom feet of the support frames 4 are bolted to the ground. A hole is provided on the left side wall of the pulverizing chamber 101 for the left section of the pulverizing roller 102 to pass through, and a suitable bearing is installed in the hole. A motor 104 is fixed to the left side wall, and its output shaft is fixed to the outer end of the rear pulverizing roller 102 via a coupling. Gears 103 are fixed to the outer section of the pulverizing roller 102, meshing with each other. The meshing transmission of the gears 103 causes the pulverizing rollers 102 to rotate inwards, and the particle size of the pulverized material decreases from top to bottom. A hopper 106 is fixed to the bottom port of the bottom pulverizing chamber 101, and a feed pipe 105 is fixed to the bottom port of the hopper 106. In the multi-stage screening structure 2, a collection basket 202 is fixed to the top surface of the support base 201. Three layers of screen baskets 204 are stacked and locked on the upper surface of the collection basket 202. The top end face of the top layer of screen basket 204 is locked with a basket cover 206, and the top end of the basket cover 206 is connected and fixed to the bottom end of the discharge pipe 105. A discharge chute 207 is fixed to the side wall of the screen basket 204. The discharge chute 207 is arranged in a staggered ring array, and its inner end is flush with the top end face of the screen mesh 205. A layer of screen mesh 205 is fixed inside the screen basket 204, and the mesh size of the screen mesh 205 decreases sequentially from top to bottom. Vibration motors 203 are installed on the left and right side walls of the support base 201. During operation, white corundum material enters the multi-stage crushing structure 1 and is crushed sequentially by two layers of crushing rollers 102 with different particle sizes. The refined material enters the multi-stage screening structure 2 through the feed pipe 105. Under the action of the vibrating motor 203, materials of different particle sizes are screened through screens 205 with different mesh sizes and discharged from different discharge troughs 207.
[0019] A material drying mechanism 3 is fixedly connected to the top surface of the multi-stage crushing structure 1. The material drying mechanism 3 includes a square cover 301 fixed to the top port of the crushing chamber 101, a discharge nozzle 302 fixed in the inner cavity of the square cover 301, and electric heating wires 304 fixed on the left and right sides of the discharge nozzle 302. A fan 306 is embedded in the top of the right side wall of the square cover 301. A left and right sliding gate 303 is inserted into the bottom port of the discharge nozzle 302. A pull rod 305 that penetrates to the right side of the square cover 301 is fixed to the right side of the gate 303. An opening for the fan 306 to be embedded is provided in the top of the right side wall of the square cover 301. A mesh cloth 307 is fixed inside the opening. The fan 306 is used to extract the water vapor generated after drying and discharge it to the outside. The power input terminal of the electric heating wire 304 is electrically connected to an external power source through a wire.
[0020] Example 2: The multi-stage crushing structure 1 of this device has three stacked and fixed crushing chambers 101. A pair of crushing rollers 102 are rotatably connected to the inner cavity of each crushing chamber 101. Adaptive bearings are installed in holes on the left sidewall of the crushing chamber 101 to allow the left section of the crushing roller 102 to rotate. A motor 104 fixed on the left side is connected to the rear crushing roller 102 via a coupling. External gears 103 mesh with each other to drive the crushing roller 102 to rotate inwards and crush the material. The particle size of the crushed material decreases sequentially from top to bottom. The bottom crushing chamber 101 is connected to a hopper 106 and a discharge pipe 105. In the multi-stage screening structure 2, a collection basket 202 is fixed on a support base 201. Four layers of screen baskets 204 are stacked and locked on the collection basket 202. The top layer of screen basket 204 is locked with a basket cover 206 and connected to the discharge pipe 105. The side wall of the sieve basket 204 has a circular array of staggered discharge troughs 207, the inner end of which is flush with the top end face of the screen 205. The mesh size of the screen 205 inside the sieve basket 204 decreases from top to bottom. Vibration motors 203 are installed on both sides of the support base 201. White corundum material enters the multi-stage crushing structure 1 and is crushed multiple times by three layers of crushing rollers 102 with different particle sizes. The refined material enters the multi-stage screening structure 2 through the feed pipe 105. Driven by the vibration motors 203, materials of different particle sizes are screened by different screens 205 and discharged from the corresponding discharge troughs 207.
[0021] Example 3: The multi-stage crushing structure 1 of this device consists of two stacked and fixed crushing chambers 101. A pair of crushing rollers 102 are rotatably mounted inside the cavity of each crushing chamber 101. Adaptive bearings are installed in holes in the left sidewall of the crushing chamber 101. A motor 104 fixed on the left side is connected to the rear crushing rollers 102 via a coupling. External gears 103 mesh with each other, causing the crushing rollers 102 to rotate inwards, and the particle size crushed by the crushing rollers 102 decreases from top to bottom. The bottom crushing chamber 101 is connected to a hopper 106 and a discharge pipe 105. In the multi-stage screening structure 2, a collection basket 202 is fixed to the top of the support base 201. Three layers of screen baskets 204 are stacked and locked on the collection basket 202. The top layer of screen baskets 204 is locked with a basket cover 206 and connected to the discharge pipe 105. The side wall of the sieve basket 204 has a circular array of staggered discharge troughs 207, the inner end of which is flush with the top end face of the screen 205. The mesh size of the screen 205 inside the sieve basket 204 decreases sequentially from top to bottom. Vibration motors 203 are installed on the left and right sides of the support base 201. White corundum material enters the multi-stage crushing structure 1, is crushed and refined by two layers of crushing rollers 102 with different particle sizes, and then enters the multi-stage screening structure 2 through the feed pipe 105. Under the action of the vibration motors 203, materials of different particle sizes are screened by different screens 205 and discharged from the corresponding discharge troughs 207.
[0022] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: When the material drying mechanism 3 is working, the white corundum material to be dried is first poured into the discharge nozzle 302 inside the square cover 301 fixed at the top port of the crushing chamber 101. At this time, the electric heating wires 304 fixed on the left and right sides of the discharge nozzle 302 are electrically connected to an external power supply through wires and start working to generate heat, heating and drying the material in the discharge nozzle 302. The water vapor generated during the drying process is discharged by the heating wires 304 embedded in the square cover 302. The fan 306 inside the top opening on the right side wall of the square cover 301 draws out the material. The mesh 307 fixed inside the opening prevents the material from being sucked into the fan 306. The fan 306 discharges the extracted water vapor outward. When the material needs to be released after drying to a certain extent, the pull rod 305 fixed on the right side of the gate 303 and extending through the right side of the square cover 301 is pulled, causing the gate 303 inserted into the bottom port of the discharge nozzle 302 to slide left and right, thereby opening the bottom port of the discharge nozzle 302 and releasing the material from the bottom port of the discharge nozzle 302.At this time, the motor 104 fixed on the left side wall starts, and the output shaft of the motor 104 drives the rear crushing roller 102 to rotate through the coupling. Since the crushing roller 102 is fixed with meshing gears 103 on the outer section of the crushing chamber 101, the meshing transmission of the gears 103 causes both crushing rollers 102 to rotate inward, initially crushing the white corundum material. In the multi-stage crushing structure 1, the particle size of the crushing rollers 102 decreases from top to bottom. The material after initial crushing falls into the next crushing chamber 101 and is further crushed by the smaller particle size crushing rollers 102 in that layer. If the multi-stage crushing structure 1 has more layers of crushing chambers 101, the material will pass through each layer in sequence, realizing multiple The material is gradually refined through secondary crushing. The refined material is discharged from the hopper 106 fixed at the bottom port of the bottom crushing chamber 101, through the feed pipe 105 fixed at the bottom port of the hopper 106, and enters the multi-stage screening structure 2. The bottom port of the feed pipe 105 is connected to the top port of the cover 206 of the uppermost screen basket 204 in the multi-stage screening structure 2, and the material enters the screen basket 204 through this connection. Vibration motors 203 are installed on the left and right side walls of the support base 201 of the multi-stage screening structure 2. When the vibration motors 203 are started, they generate vibration, causing the entire multi-stage screening structure 2 to vibrate. A collection basket 202 is fixed to the top surface of the support base 201 in the multi-stage screening structure 2, and the upper surface of the collection basket 202 is stacked with locking 3. - Four layers of sieve baskets 204, each with a fixed layer of sieve mesh 205 inside. The mesh size of the sieve mesh 205 decreases from top to bottom. Under vibration, white corundum materials of different particle sizes will pass through sieve mesh 205 with different mesh sizes. Materials with a particle size smaller than the mesh size of the upper sieve mesh 205 will fall into the next layer of sieve basket 204, while materials with a particle size larger than the mesh size will remain in the current sieve basket 204. Discharge troughs 207 are fixed to the side wall of the sieve basket 204. The discharge troughs 207 are arranged in a staggered circular array, with their inner ports flush with the top end face of the sieve mesh 205. Materials of different particle sizes remaining in each sieve basket 204 will be discharged from the corresponding discharge trough 207, thereby completing the multi-stage screening of the highly pulverized white corundum material and further improving the fineness of the material.
[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A multi-stage pulverizing and screening device for refining white corundum, comprising a multi-stage pulverizing structure (1), characterized in that: The multi-stage crushing structure (1) has a multi-stage screening structure (2) placed on the ground at its bottom. The top surface of the multi-stage crushing structure (1) is fixedly connected to a material drying mechanism (3). The multi-stage crushing structure (1) includes 2-3 layers of crushing chambers (101) stacked and fixed to each other, and a pair of crushing rollers (102) rotatably connected in the inner cavity of the crushing chamber (101). The left side wall of the crushing chamber (101) is fixedly connected to a motor (104). The output shaft of the motor (104) is fixedly connected to the outer end of the rear crushing roller (102) through a coupling. The crushing roller (102) located outside the crushing chamber (101) is fixedly connected to a gear (103) that meshes with each other. The multi-stage screening structure (2) includes a support base (201), a collection basket (202) fixed on the top surface of the support base (201), and 3-4 layers of screen baskets (204) stacked and locked on the upper surface of the collection basket (202). The top end face of the uppermost screen basket (204) is locked with a basket cover (206), and a discharge chute (207) is fixedly connected to the side wall of each screen basket (204). A screen mesh (205) is fixedly connected to the inner cavity of each screen basket (204). Support frames (4) are fixedly connected to the left and right sides of the crushing chamber (101), and the bottom legs of the support frames (4) are locked to the ground by bolts. The material drying mechanism (3) includes a square cover (301) fixed at the top port of the crushing chamber (101), a discharge nozzle (302) fixed in the inner cavity of the square cover (301), and electric heating wires (304) fixed on the left and right sides of the discharge nozzle (302). A fan (306) is embedded in the top of the right side wall of the square cover (301).
2. The multi-stage pulverizing and screening device for white corundum refining according to claim 1, characterized in that: The left side wall of the crushing chamber (101) is provided with holes through which the left section of the crushing roller (102) passes. Each hole is equipped with a bearing that is adapted to rotate with the left section of the crushing roller (102).
3. The multi-stage pulverizing and screening device for white corundum refining according to claim 1, characterized in that: The gears (103) mesh with each other to drive the crushing rollers (102) to rotate inwards to crush the white corundum material.
4. The multi-stage pulverizing and screening device for refining white corundum according to claim 1, characterized in that: The particle size of the crushing roller (102) decreases from top to bottom, and is used to refine white corundum material through multiple crushing processes.
5. The multi-stage pulverizing and screening device for refining white corundum according to claim 1, characterized in that: A hopper (106) is fixedly connected to the bottom port of the crushing chamber (101) at the bottom, and a feed pipe (105) is fixedly connected to the bottom port of the hopper (106).
6. The multi-stage pulverizing and screening device for white corundum refining according to claim 1, characterized in that: The top end of the basket cover (206) is fixedly connected to the bottom end of the feed tube (105).
7. The multi-stage pulverizing and screening device for white corundum refining according to claim 1, characterized in that: The mesh size of the sieve (205) decreases sequentially from top to bottom, and is used for multi-stage screening of white corundum materials of different particle sizes.
8. The multi-stage pulverizing and screening device for refining white corundum according to claim 1, characterized in that: Vibration motors (203) are installed on both the left and right side walls of the support base (201).
9. The multi-stage pulverizing and screening device for refining white corundum according to claim 1, characterized in that: The discharge troughs (207) are arranged in a staggered ring array, and the inner ports of the discharge troughs (207) are flush with the top end face of the screen (205).
10. The multi-stage pulverizing and screening device for white corundum refining according to claim 1, characterized in that: The bottom port of the discharge nozzle (302) is inserted with a sliding gate (303). A pull rod (305) is fixed on the right side of the gate (303) and extends through to the right side of the square cover (301). An opening for the fan (306) is provided on the top of the right side wall of the square cover (301). A mesh cloth (307) is fixed inside the opening. The fan (306) is used to extract the water vapor generated after drying and discharge it outward. The power input terminal of the electric heating wire (304) is electrically connected to an external power source through a wire.