Differential height layout stud roll face for a roll press
By adopting a stud design with a differentiated height layout on the roller press, the problems of material slippage and edge leakage are solved, resulting in a more uniform crushing effect and higher production efficiency, while reducing equipment maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI CEMENT RESEARCH AND DESIGN INSTITUTE CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-29
Smart Images
Figure CN224293376U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roller press technology, specifically to a roller press with a differentiated height layout of stud rollers. Background Technology
[0002] In cement production plants, roller presses are key equipment that play an important role in crushing materials. During the cement production process, a large amount of raw materials such as limestone and cement clinker need to be crushed by roller presses.
[0003] Chinese Patent Application No. 201921911181.8 discloses a cemented carbide stud roller surface for a roller press. The roller surface body is divided into a central section, a transition section, and an edge section along the central axis, with working studs in the central section, transition studs, and a wear-resistant weld overlay layer respectively. Furthermore, based on the stress characteristics of different areas, studs and material structures with progressively decreasing hardness are selected to homogenize roller surface wear and reduce stud breakage. While ensuring the crushing performance of the roller press, this significantly extends the effective service life of the roller surface and improves the stability and economy of equipment operation.
[0004] The uniform height of the roller pins on the roller press makes the material subjected to a single and uneven force under high pressure. When the material enters the roller press, the extrusion and shearing forces given by the pins in different parts are similar, and the material is prone to slippage in the gap between the rollers. Some particles cannot be fully extruded and sheared, resulting in uneven particle size after crushing, which does not meet the production requirements.
[0005] Moreover, in actual cement plant production, the edge area of the roller press is a problem area. Because the material in the edge area is more susceptible to centrifugal force, the height and density of the pins in the edge area of traditional roller presses are the same as those in the middle area, which cannot effectively suppress material slippage and leakage. During production, a large amount of material slides out from the edge area, which not only wastes raw materials but also accumulates around the equipment, requiring frequent cleaning by workers and increasing labor costs. This leaked material will enter the gap between the side baffle and the roller surface of the roller press, aggravating the wear of the side baffle. Once the side baffle is severely worn, it needs to be replaced in time, which not only increases equipment maintenance costs but also causes equipment downtime, affecting the continuity of production. Utility Model Content
[0006] To address the technical problems existing in the background art, this utility model proposes a differentiated height layout pin roller surface for a roller press.
[0007] This utility model proposes a roller surface with differentiated height layout pins for a roller press, including a roller surface body and mixed pins evenly distributed thereon. The mixed pins include protective pins and working pins. The protective pins are installed on both sides of the roller surface body and are distributed circumferentially. The height of the protective pins is greater than the height of the working pins. The working pins are evenly distributed between the two protective pins, and the heights of the multiple working pins are different.
[0008] Traditional roller presses have uniform roller surface pin height, which can lead to problems such as material slippage and edge leakage. In this design, protective pins are installed on both sides of the roller surface body and distributed circumferentially. The higher protective pins can act as a "barrier" to enhance the control of particles in the edge area, effectively preventing material from slipping out of the roller surface edge or leakage, and ensuring the overall efficiency and stability of the system.
[0009] The working pins are distributed between two protective pins at different heights. This design breaks away from the traditional layout where the pins are of uniform height, causing the material to be subjected to forces of different directions and magnitudes during the rolling process, increasing the squeezing and friction between particles, and improving the crushing effect.
[0010] As a further optimization of this utility model, the adjacent columns of multiple working pins are distributed at different heights to avoid material slippage in the gap between the rollers.
[0011] When the material comes into contact with rows of pins of different heights during the rolling process, it will continuously change its direction of movement and stress state. The taller rows of pins exert greater extrusion force on the material, while the shorter rows of pins allow the material to transition under relatively less pressure. This alternating change in pressure and direction of movement makes it difficult for the material to maintain a stable sliding tendency, thereby enhancing the grinding effect and improving the crushing efficiency.
[0012] As a further optimization of this utility model, the height of multiple working pins changes every two columns, effectively restricting the movement of particles;
[0013] When the material passes through rows of pins of varying heights, the compressive and shear forces it experiences change. At the points of height change, the pressure on the material changes abruptly, increasing the compressive effect on the particles and making them easier to break. At the same time, this design also prevents the material from shifting or accumulating on the roller surface, ensuring that the material is evenly distributed during the roller pressing process, which helps to improve the overall crushing effect.
[0014] As a further optimization of this utility model, the distance between adjacent working pins is equal, and the adjacent columns of working pins are arranged in an alternating pattern;
[0015] The equal distance between adjacent working pins ensures a uniform distribution of pressure on the roller surface. During the rolling process, the material is subjected to uniform pressure, avoiding local wear caused by excessive or insufficient local pressure and extending the service life of the roller surface.
[0016] The staggered arrangement of adjacent working pins enhances the shearing and squeezing effect on the particles. When the material passes through the staggered pins, it will be subjected to forces from different directions, increasing the friction and collision between the material particles, resulting in a better crushing effect.
[0017] Furthermore, this arrangement further prevents material slippage, allowing the material to be more thoroughly crushed and improving overall crushing efficiency.
[0018] As a further optimization of this utility model, the height of the working pins near the central area of the roller body is less than the height of the working pins near the edge area of the roller body.
[0019] In the central area of the roller surface, the movement between particles is restricted by the surrounding particles and the equipment structure, resulting in weaker fluidity. The relatively low and uniformly high working pin design simplifies the structure of the central area. The lower pin height can better adapt to the movement characteristics of the particles in the central area, enhancing the stable crushing of the particles. Meanwhile, the higher working pins in the edge area can apply greater extrusion force to the edge particles, compensating for the insufficient force on the edge particles caused by centrifugal force and other factors, ensuring a more uniform crushing effect across the entire roller surface.
[0020] As a further optimization of this utility model, multiple working pins adopt a multi-level height distribution, with different height combinations set every few columns, which increases the diversity of particle force.
[0021] During the roller pressing process, when the material passes through rows of pins with different heights, it will be subjected to forces of different magnitudes and directions. This diverse force distribution can more fully crush the particles and further improve the crushing effect. The different heights of the pins exert different squeezing and shearing effects on the material, so that the material can be effectively processed at different stages, thus improving the working performance of the roller press.
[0022] As a further optimization of this utility model, the heights of the multiple working pins are not completely regularly distributed, but are randomly adjusted. Randomly adjusting the heights of the working pins can improve the multi-directional shearing and crushing of particles.
[0023] When materials pass through the highly randomly varying pins, they experience more complex and diverse forces, which shear and crush the materials from different directions, further reducing particle slippage and accumulation. This irregular height distribution prevents the materials from forming a fixed motion pattern during the rolling process, thus allowing them to contact the pins more fully and improving the uniformity and comprehensiveness of the crushing effect.
[0024] As a further optimization of this utility model, the arrangement density of the protective studs is higher than that of the working studs. For example, reducing the arrangement spacing in the edge area can improve the blocking ability against edge particles.
[0025] When the roller press is working, the material in the edge area is more likely to slide out or leak due to centrifugal force and other effects. The high density of the protective pins forms a tighter "barrier", which effectively blocks the escape of edge particles, prevents material from sliding out or leaking, and ensures the normal operation and working efficiency of the roller press.
[0026] As a further optimization of this utility model, the working pin adopts a three-zone spiral gradient uniform distribution. The three zones are respectively set as a coarse crushing zone, a transition zone, and a fine crushing zone with decreasing heights. The coarse crushing zone, the transition zone, and the fine crushing zone are alternately distributed along the roller surface axial direction at a spiral angle of 15°-25°. Every 120° circumferential angle forms a complete crushing cycle, so that the material can pass through different functional areas in sequence during the roller pressing process, achieving efficient crushing.
[0027] The coarse crushing zone is used to process large particles with high hardness. It has a high pin height and a relatively low distribution density. Combined with conical pins, it can provide a large extrusion force and effectively crush large particles.
[0028] The transition zone has moderate pin height and distribution density, and the top has a hemispherical wear-resistant head, which can meet the secondary crushing needs of medium-sized particles and further refine the particles;
[0029] The fine crushing zone has low column height and high distribution density, and the surface has spiral guide grooves, which can promote uniform crushing of fine particles and improve the fineness of crushing.
[0030] Furthermore, a height gradient zone is set at the junction of each zone, and the height of the pins transitions in an equal gradient, which effectively avoids stress concentration and ensures the stability of the roller surface structure.
[0031] Furthermore, T-shaped mounting grooves are opened on the roller body, and hexagonal flanges are welded to the bottom of the studs. They are fixed by high-strength bolts, which supports quick replacement and facilitates equipment maintenance and repair. The T-shaped mounting grooves are machined with a helix angle of 20° and the groove spacing error is ≤±0.1mm, which ensures the accuracy of stud installation and ensures the stable performance of the entire roller surface.
[0032] The differentiated height layout pin roller surface for the roller press proposed in this utility model has the following beneficial effects:
[0033] (i) By designing working pins of varying heights, and combining various layout methods such as alternating heights of adjacent columns, height changes every two columns, multi-level height distribution, gradual increase from the center to the edge, and random height adjustment, the material is subjected to forces of different directions and magnitudes during the rolling process, increasing the squeezing and friction between particles. When the material passes through columns of pins of different heights, the direction of movement and the state of force constantly change, making it difficult to slip and effectively crushing it at different stages, thereby improving the crushing effect and making the crushed particles more uniform in size, which meets production requirements.
[0034] (ii) By installing protective pins that are circumferentially distributed and taller than the working pins on both sides of the roller body, and whose arrangement density is also higher than that of the working pins, an effective "barrier" is formed, which enhances the control of particles in the edge area and can effectively prevent materials from sliding out or leaking from the edge of the roller. This not only reduces the waste of raw materials and the cost of manual cleaning, but also avoids the wear of the side baffles by leaked materials, reduces equipment maintenance costs and downtime, ensures the continuity of production, and improves production efficiency.
[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0036] Figure 1 This is a three-dimensional structural diagram of the roller surface body of this utility model;
[0037] Figure 2 This is a schematic diagram of the front structure of the roller body of this utility model;
[0038] Figure 3 This is a schematic diagram of the column nail structure on the roller surface body of this utility model.
[0039] Figure descriptions: 1. Roller body; 2. Column pin; 21. Protective column pin; 22. Working column pin. Detailed Implementation
[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0042] In the field of roller press technology, the traditional roller press roller surface pin design has many defects, such as easy material slippage, edge leakage, and low crushing efficiency. The roller press of this utility model uses a roller surface with differentiated height layout pins, which effectively solves these problems through innovative design. The specific implementation method is as follows:
[0043] like Figures 1-3 As shown, the roller surface is mainly composed of the roller surface body 1 and the uniformly distributed mixed pins 2 on it. The mixed pins 2 are further divided into protective pins 21 and working pins 22. The protective pins 21 are installed on both sides of the roller surface body 1 and are distributed circumferentially. Their height is greater than that of the working pins 22. When the roller press is working, it can act as a barrier to effectively prevent the material in the edge area from sliding out of the roller surface due to centrifugal force and other factors, reduce material leakage, and ensure the normal operation and overall efficiency of the roller press.
[0044] like Figure 3 As shown, the working pins 22 are evenly distributed between the protective pins 21 on both sides, and the heights of the multiple working pins 22 are not consistent. This height difference design breaks the traditional pattern of uniform pin height on the roller surface, so that the material is subjected to forces of different directions and magnitudes during the rolling process, which increases the squeezing and friction between particles, thereby improving the crushing effect.
[0045] There are several layout options for working studs, as detailed below:
[0046] 1. The adjacent columns of multiple working pins 22 are distributed with alternating heights;
[0047] When the material comes into contact with these pins during the rolling process, it will continuously change its direction of movement and stress state. The higher pin rows apply greater extrusion pressure to the material, while the lower pin rows allow the material to transition under relatively less pressure. This alternating change in pressure and direction of movement effectively prevents the material from slipping in the gap between the rollers, enhances the grinding effect, and significantly improves the crushing efficiency.
[0048] II. The height of multiple working pins 22 changes every two columns;
[0049] When the material passes through rows of pins of different heights, the compressive and shear forces it experiences change accordingly. At the points where the height changes, the pressure on the material changes abruptly, increasing the compressive effect on the particles and making them easier to break. At the same time, this design can also prevent the material from shifting or accumulating on the roller surface, ensuring that the material is evenly distributed during the roller pressing process, and further improving the overall crushing effect.
[0050] 3. The distance between adjacent working pins 22 is equal, and the working pins 22 in adjacent columns are staggered;
[0051] Equal spacing ensures uniform distribution of roller surface pressure, avoids local wear caused by abnormal local pressure, and extends the service life of the roller surface. The staggered arrangement causes the material to be subjected to forces from different directions when passing through, which enhances the shearing and squeezing effect on the particles, increases the friction and collision between material particles, further prevents material slippage, and allows the material to be crushed more fully, thus improving the overall crushing efficiency.
[0052] IV. The height of the working pin 22 in the central area of the roller body 1 is less than the height in the area near the edge.
[0053] In the central area of the roller surface, the movement of particles is restricted by the surrounding particles and the equipment structure, resulting in weaker fluidity. The lower and more uniform working pins 22 can better adapt to its movement characteristics and enhance the stable crushing of particles. In contrast, the higher working pins 22 in the edge area can apply greater extrusion force to the edge particles, making up for the insufficient force on the edge particles caused by factors such as centrifugal force, and ensuring a more uniform crushing effect across the entire roller surface.
[0054] 5. Multiple working pins 22 adopt a multi-level height distribution, with different height combinations set every few columns;
[0055] When the material passes through these rows of pins with different heights during the roller pressing process, it will be subjected to forces of different magnitudes and directions. This diverse force distribution can more fully crush the particles and improve the working performance of the roller press. The different heights of the pins exert different squeezing and shearing effects on the material, so that the material can be effectively processed at different stages.
[0056] 6. The heights of multiple working pins 22 are not completely regularly distributed, but are randomly adjusted.
[0057] When materials pass through the highly randomly varying pins, they experience more complex and diverse forces, which shear and crush the materials from different directions. This irregular height distribution prevents the materials from forming a fixed motion pattern during the rolling process, allowing them to make more full contact with the pins, thus improving the uniformity and comprehensiveness of the crushing effect and reducing particle slippage and accumulation.
[0058] VII. Multiple working studs 22 are uniformly distributed in a three-zone spiral gradient;
[0059] Specifically, the working pin 22 is divided into a coarse crushing zone, a transition zone, and a fine crushing zone. These three zones are distributed alternately along the roller surface axial direction at a helical angle of 15°-25°, and a complete crushing cycle is formed every 120° circumferential angle.
[0060] ① The coarse crushing zone has a high column height and a relatively low distribution density, which can provide greater extrusion pressure for high-hardness large particles and effectively achieve initial crushing;
[0061] ②The transition zone has a moderate height and distribution density, and combined with its wear-resistant head design, it can meet the secondary crushing requirements of medium-sized particles and further refine the particles;
[0062] ③ The fine crushing zone has a lower column height and a higher distribution density. Combined with the spiral guide groove design, it can promote the uniform crushing of fine particles and improve the fineness of crushing.
[0063] Furthermore, a height gradient zone is set at the junction of each zone, and the height of the pins transitions in an equal gradient. This design effectively avoids stress concentration and ensures the stability of the roller surface structure.
[0064] Furthermore, a T-shaped mounting groove is provided on the roller body 1, and a hexagonal flange is welded to the bottom of the stud and fixed by high-strength bolts. This installation method supports quick replacement of studs, which facilitates equipment maintenance and repair.
[0065] The T-shaped mounting groove is machined with a helix angle of 20° and the groove spacing error is ≤ ±0.1mm, which ensures the accuracy of the pin installation and the stability of the entire roller surface performance.
[0066] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A roller surface with differentiated height layout studs for a roller press, comprising a roller surface body (1) and uniformly distributed mixed studs (2) thereon, characterized in that, The mixed pin (2) includes protective pins (21) and working pins (22). The protective pins (21) are installed on both sides of the roller body (1) and distributed circumferentially. The height of the protective pins (21) is greater than the height of the working pins (22). The working pins (22) are evenly distributed between the two protective pins (21), and the heights of the multiple working pins (22) are different.
2. The differentiated height layout pin roller surface for a roller press according to claim 1, characterized in that, The adjacent columns of multiple working pins (22) are distributed alternately at different heights.
3. The differentiated height layout pin roller surface for a roller press according to claim 1, characterized in that, The height of multiple working pins (22) varies every two columns.
4. A roller surface with differentiated height layout for a roller press according to claim 1, characterized in that, The distance between adjacent working pins (22) is equal, and the adjacent columns of working pins (22) are staggered.
5. A roller surface with differentiated height layout for a roller press according to claim 1, characterized in that, The height of the working pin (22) in the central area near the roller body (1) is less than the height of the working pin (22) in the edge area near the roller body (1).
6. A differentiated height layout pin roller surface for a roller press according to claim 1, characterized in that, Multiple working pins (22) adopt a multi-level height distribution, with different height combinations set every few columns.
7. A roller surface with differentiated height layout for a roller press according to claim 1, characterized in that, The heights of multiple working pins (22) are not completely regularly distributed.
8. A differentiated height layout pin roller surface for a roller press according to claim 1, characterized in that, The arrangement density of the protective studs (21) is higher than that of the working studs (22).
9. A differentiated height layout pin roller surface for a roller press according to claim 1, characterized in that, The working pin (22) adopts a three-zone spiral gradient uniform distribution. The three zones are respectively set as coarse crushing zone, transition zone and fine crushing zone with decreasing height. The coarse crushing zone, transition zone and fine crushing zone are alternately distributed along the roller surface axis at a spiral angle of 15°-25°. A complete crushing cycle is formed every 120° circumferential angle.