Edge runner with optimized runner wheel arrangement
By asymmetrically arranging the inner and outer grinding wheels and scraper structure, the problem of low mixing efficiency in existing roller mills has been solved, achieving rapid and uniform mixing of materials and efficient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-07
AI Technical Summary
The existing roller mill has low mixing efficiency. The material is scattered outside the roller track and cannot be effectively crushed and mixed, resulting in uneven mixing.
The structure employs an asymmetrical arrangement of inner and outer grinding wheels and scrapers. The movement trajectories of the inner and outer grinding wheels partially overlap and cover the bottom plate. The inner and outer scrapers scrape and stir-fry the inner and outer areas respectively, ensuring that the material is fully covered without any blind spots.
It achieves rapid and uniform mixing of materials, greatly improves the working efficiency of the roller mill, and ensures that all materials are fully crushed and squeezed.
Smart Images
Figure CN224086874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing equipment for uniform mixing of various materials, specifically to a roller mill. Background Technology
[0002] A roller mill is a material crushing or mixing device consisting of a cylinder, bottom plate, and rollers as its main working components. It is suitable for mixing various dry and wet materials as well as colloidal materials, such as refractory clay, clay, fly ash, tailings sand, slag, molding sand, pottery clay, organic fertilizer, and silicon carbide. It is widely used in industries such as casting, ceramics, refractory materials, chemicals, building materials, and silicon carbide products. The roller mill uses rollers and scrapers to grind, press, knead, rub, tumble, and stir-fry materials to achieve mechanical activation, altering the molecular structure of the mixed materials and turning them into active materials, thereby improving the strength and toughness of the finished products.
[0003] A roller mill has a central shaft and rollers on both sides of the central shaft. The rotation of the central shaft drives the rollers to move, thus grinding the material. Currently, the rollers of a typical roller mill are symmetrically arranged on both sides of the central shaft, with the rollers positioned between the central shaft and the cylinder. The rollers' movement trajectory is a central ring on the bottom plate, and the movement trajectories of the two rollers overlap. When the roller mill is running, through the crushing and kneading of the rollers, most of the material is squeezed out of the roller trajectory onto the inner and outer rings of the bottom plate. Although the scraper can scrape most of the material back into the roller trajectory, a large amount (one-third) of the material remains scattered outside the roller trajectory and cannot be effectively squeezed and mixed by the rollers and scrapers. It can only be gradually mixed through multiple rotations of the rollers and repeated scraping and churning by the scrapers, as shown in Figure 3. Therefore, the mixing efficiency of existing roller mills is relatively low. Summary of the Invention
[0004] This invention overcomes the shortcomings of the prior art and provides a new type of grinding wheel to solve the problem of low mixing efficiency in existing wheel mills.
[0005] The technical solution of this utility model is implemented as follows: a roller mill with optimized roller arrangement includes a cylinder and a base plate, as well as inner and outer rollers; a central shaft of the roller mill is provided on the base plate, the central shaft is connected to a drive device and is driven to rotate by the drive device, a crossbeam is installed on the central shaft, the crossbeam is asymmetrically installed on the central shaft, the crossbeam is divided into two sections, one shorter and the other longer; the shorter section of the crossbeam has a short end, the short end is equipped with an outer roller hanging wall, the outer roller hanging wall has an upper circular sleeve and a lower... The outer roller has an upper sleeve that is fitted onto the short end, and a lower sleeve that is fitted onto the shaft of the outer roller from the inside. A longer section of the crossbeam has a long end, on which an inner roller is mounted. The inner roller has an upper sleeve and a lower sleeve. The upper sleeve is fitted onto the long end, and the lower sleeve is fitted onto the shaft of the inner roller from the outside. An inner scraper is installed in front of the inner roller, and an outer scraper is installed in front of the outer roller. The inner and outer scrapers are fixed to the crossbeam by support legs.
[0006] When the roller mill is working, the drive device drives the central shaft to rotate, which in turn drives the crossbeam fixed on the central shaft to rotate. The inner roller wall, outer roller wall, inner scraper, and outer scraper rotate accordingly. The rotation of the inner and outer roller walls drives the inner and outer rollers to rotate around the central shaft, and the movement trajectories of the inner and outer rollers partially overlap and cover the entire bottom plate.
[0007] Furthermore, the inner roller's movement trajectory is close to the central axis, and the outer roller's movement trajectory is close to the cylinder.
[0008] Furthermore, the scraping area of the inner ring scraper is close to the central axis, and the scraping area of the outer ring scraper is close to the cylinder.
[0009] The beneficial effects of this utility model are: (1) Because the material is continuously rolled, mixed and rubbed by the two grinding wheels without dead corners and by the two scrapers constantly scraping and stirring, the material can be quickly and evenly mixed, which greatly improves the working efficiency of the grinding machine. (2) By setting the inner ring scraper and the outer ring scraper, the inner ring area and the outer ring area are scraped respectively, which covers all directions without dead corners and ensures that all materials are ground and rubbed. Attached Figure Description
[0010] Figure 1 This is the front view of the roller mill of this utility model;
[0011] Figure 2 This is a top view of the roller mill of this utility model;
[0012] Figure 3 This is a top view of a conventional roller mill.
[0013] The components include: 1. Cylinder body; 2. Bottom plate; 3. Inner grinding wheel; 4. Outer grinding wheel; 5. Central shaft of the roller mill; 6. Crossbeam; 7. Short end; 8. Outer grinding wheel wall mount; 41. Outer grinding wheel shaft; 9. Long end; 10. Inner grinding wheel wall mount; 31. Inner grinding wheel shaft; 11. Inner ring scraper; 12. Outer ring scraper; 13. Support leg; 14. Movement trajectory of the outer grinding wheel; 15. Movement trajectory of the inner grinding wheel. Detailed Implementation
[0014] The technical solution of this utility model will be further described below with reference to the embodiments.
[0015] like Figure 1 , 2 As shown, a roller mill with optimized roller arrangement includes a cylinder 1 and a base plate 2, which form the roller mill's working chamber. The working chamber contains an inner roller 3 and an outer roller 4. A central shaft 5 is mounted on the base plate, connected to a drive device and rotated by the drive device. A crossbeam 6 is installed on the central shaft, which can be fixed to the central shaft with screws or welded to it. The crossbeam is asymmetrically installed on the central shaft, divided into two sections, one shorter and one longer. The shorter section of the crossbeam has a short end 7, on which an outer roller is mounted. The outer roller wall 8 has an upper and a lower circular sleeve. The upper circular sleeve of the outer roller wall is fitted onto the short end, and the lower circular sleeve of the outer roller wall is fitted onto the shaft 41 of the outer roller from the inside of the outer roller. The longer section of the crossbeam has a long end 9, and an inner roller wall 10 is installed on the long end. The inner roller wall has an upper and a lower circular sleeve. The upper circular sleeve of the inner roller wall is fitted onto the long end, and the lower circular sleeve of the inner roller wall is fitted onto the shaft 31 of the inner roller from the outside of the inner roller. An inner ring scraper 11 is installed in front of the inner roller, and an outer ring scraper 12 is installed in front of the outer roller. The inner ring scraper and the outer ring scraper are fixed to the crossbeam with bolts through the support legs 13.
[0016] When the roller mill is working, the drive device drives the central shaft 5 to rotate, which in turn drives the crossbeam fixed on the central shaft to rotate. The inner and outer roller hanging walls, which are sleeved on both ends of the crossbeam, and the inner and outer scrapers fixed on the crossbeam rotate accordingly. The rotation of the inner and outer roller hanging walls drives the inner roller and the outer roller to rotate around the central shaft, respectively. The movement trajectory of the inner roller is a circle between the two blue lines in the figure, and the movement trajectory of the outer roller is a circle between the two red lines in the figure. The circular tracks of the two rollers cover the entire base plate and partially overlap.
[0017] In the figure, 14 represents the area between the two red lines, which is the trajectory of the outer grinding wheel; 15 represents the area between the two blue lines, which is the trajectory of the inner grinding wheel.
[0018] Instructions for use: Add the material to the roller mill cylinder and turn on the roller mill. After the material is added to the roller mill cylinder 1, it spreads onto the roller mill base plate 2. The material in the inner ring is partially adhered to the base plate 2 under the crushing and kneading action of the inner roller 3 near the central shaft 5, while the remainder flows to the outer ring and is sent to the movement trajectory 14 of the outer roller 4 near the cylinder 1. The material in the outer ring is partially adhered to the base plate 2 under the crushing and kneading action of the outer roller 4 near the cylinder 1, while the remainder flows to the inner ring and is sent to the movement trajectory 15 of the inner roller 3 near the central shaft 5. The inner ring scraper 11 scrapes and stirs up the material compacted on the inner roller trajectory; the outer ring scraper 12 scrapes and stirs up the material compacted on the outer roller trajectory; the material automatically flows between the inner and outer rings of the roller mill under the crushing action of the two rollers 3 and 4, and the two scrapers 11 and 12 scrape and stir up the material compacted by the two rollers 3 and 4. The tracks of the two grinding wheels 3 and 4 and the two scrapers 11 and 12 cover the entire bottom plate 2, leaving no dead corners. Under the grinding and kneading of the two grinding wheels 3 and 4 without dead corners, and the continuous scraping and stirring of the two scrapers 11 and 12, the material is constantly rolled, mixed and rubbed, which can be quickly and evenly mixed, greatly improving the working efficiency of the roller mill.
[0019] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A roller mill with optimized roller arrangement, comprising a cylinder and a bottom plate, and inner and outer rollers; characterized in that: The base plate is equipped with a central shaft for a roller mill. The central shaft is connected to a drive unit and is driven to rotate. A crossbeam is mounted on the central shaft, asymmetrically divided into two sections, one shorter and one longer. The shorter section has a short end, on which an outer roller hanger is mounted. The outer roller hanger has an upper and a lower sleeve. The upper sleeve of the outer roller hanger is fitted onto the short end. The lower circular sleeve of the inner roller is mounted on the shaft of the outer roller from the inside; a longer section of the crossbeam has a long end, on which the inner roller wall is installed. The inner roller wall has an upper circular sleeve and a lower circular sleeve. The upper circular sleeve of the inner roller wall is mounted on the long end, and the lower circular sleeve of the inner roller wall is mounted on the shaft of the inner roller from the outside; an inner ring scraper is installed in front of the inner roller, and an outer ring scraper is installed in front of the outer roller. The inner ring scraper and the outer ring scraper are fixed to the crossbeam by support legs. When the roller mill is working, the drive device drives the central shaft to rotate, which in turn drives the crossbeam fixed on the central shaft to rotate. The inner roller wall, outer roller wall, inner scraper, and outer scraper rotate accordingly. The rotation of the inner and outer roller walls drives the inner and outer rollers to rotate around the central shaft, respectively. The movement trajectories of the inner and outer rollers partially overlap and cover the entire bottom plate.
2. The roller mill according to claim 1, characterized in that: The inner roller's movement trajectory is close to the central axis, and the outer roller's movement trajectory is close to the cylinder.
3. The roller mill according to claim 1 or 2, characterized in that: The scraping area of the inner ring scraper is close to the central axis, and the scraping area of the outer ring scraper is close to the cylinder.