Low-pressure roller mill
By designing the feed hopper and limiting components in a low-pressure roller mill, combined with the use of buffer components, the problem of roll damage when dealing with hard and large straight particles is solved, and the efficient operation of the equipment and the improvement of product quality is achieved.
Patent Information
- Application Number
- CN202510532271.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2045-04-25
AI Technical Summary
When existing low-pressure roll mills deal with large straight particles with hard texture, it is difficult for the roll roll to be effectively broken, resulting in increased equipment energy consumption, intensified roll wear, and may even lead to equipment damage, affecting production efficiency and product quality.
A low-pressure roller mill is designed. By setting a feed hopper between the moving roller assembly and the fixed roller assembly, and using a limiting assembly and a buffer assembly, the crushing process of the material is controlled. When large-diameter impurities are encountered, the rotating rollers in the moving roller assembly can move to a certain extent, helping impurities pass through the gaps and reducing damage to the rolling rollers.
It effectively reduces the damage to the outer wall of the rolling roll by harder large straight particles, improves the service life and production efficiency of the equipment, reduces maintenance costs, and improves product quality.
Smart Images
Figure CN120205259A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mining machinery, and in particular to a low-pressure roller mill. Background Art
[0002] In the field of material crushing and processing, low-pressure roller mills are widely used in many industries such as mining, cement, and chemical industry due to their advantages of high efficiency and energy conservation. Its working principle is mainly to apply pressure to the material entering between two relatively rotating rollers to achieve the crushing of the material.
[0003] However, in the actual operation process of the existing low-pressure roller mills, a relatively prominent problem is faced. When large straight particles with a hard texture enter between the two rollers, due to the high strength of such particles themselves and their shape being not conducive to the effective clamping and crushing by the rollers, it is difficult for the rollers to crush them smoothly. In this case, the rollers need to apply greater pressure to try to complete the crushing task, which not only increases the energy consumption of the equipment but also may cause damage to the rollers such as increased wear, deformation, and even fracture under long-term high-load operation. Once the rollers are damaged, it will not only affect the normal production efficiency of the low-pressure roller mill, increase the equipment maintenance cost, but also may lead to the interruption of the production process, bringing greater economic losses to the enterprise. In addition, since the large straight particles with a hard texture cannot be effectively crushed, it may also affect the quality and performance of the subsequent products and cannot meet the requirements of the production process. Therefore, developing a low-pressure roller mill that can effectively solve the above problems has become an important issue to be solved urgently in this field. Summary of the Invention
[0004] In order to reduce the damage degree of large straight particles with a hard texture to the outer wall of the rollers, this application provides a low-pressure roller mill.
[0005] The low-pressure roller mill provided by this application adopts the following technical solutions: A low-pressure roller mill includes a chassis. A movable frame is slidably connected to the upper end of the chassis. A moving roller assembly is installed on the movable frame. A fixed roller assembly is installed on the chassis. A limiting component for restricting the position of the moving roller assembly is installed on the chassis. The moving roller assembly and the fixed roller assembly are provided with the same feed hopper, and the feed hopper is fixedly connected to the chassis.
[0006] By adopting the above technical solution, materials can be added between the moving roller assembly and the fixed roller assembly through the feed hopper, so that the materials are extruded and crushed. When there are large straight granular impurities with a hard texture in the materials, the large straight granular impurities with a hard texture will apply an external force to the moving roller assembly, thereby causing the moving frame slidably connected to the chassis to move a certain distance. At the same time, the limiting component will limit the moving range of the moving frame and reset the moving roller assembly. Thus, the large straight granular impurities with a hard texture can smoothly pass through the gap between the fixed roller and the moving roller, thereby reducing the damage degree of the large straight granular impurities with a hard texture to the outer wall of the roller.
[0007] Optionally, the fixed roller assembly includes a first driving motor, a first speed reducer, and a fixed roller. The output shaft of the first driving motor is connected to the first speed reducer in a shaft connection manner. The output shaft of the first speed reducer is coaxially arranged and fixedly connected to the fixed roller. The first driving motor and the first speed reducer are both fixedly connected to the chassis, and the fixed roller is rotatably connected to the chassis.
[0008] By adopting the above technical solution, by starting the first driving motor, the first driving motor can drive the first speed reducer to rotate, and then the speed reducer can drive the fixed roller to rotate.
[0009] Optionally, the moving roller assembly includes a second driving motor, a second speed reducer, and the moving roller. The second driving motor and the second speed reducer are both fixedly connected to the moving frame. The moving roller is rotatably connected to the moving frame. The output shaft of the second driving motor is connected to the second speed reducer in a shaft connection manner, and the second speed reducer is connected to the moving roller in a shaft connection manner.
[0010] By adopting the above technical solution, the second driving motor can drive the second speed reducer to rotate, and then the rotating roller can be driven to rotate.
[0011] Optionally, the limiting component includes a plurality of support rods fixedly connected to the chassis. An oil cylinder is installed on each support rod. A contact plate is hinged to the output shaft of the oil cylinder. A buffer component for connecting the two is provided between the contact plate and the moving frame.
[0012] By adopting the above technical solution, the movement of the moving frame can be controlled by controlling the extension and contraction of the oil cylinder, and then the distance between the moving roller assembly and the fixed roller assembly can be changed.
[0013] Optionally, the buffer component includes a receiving plate and a plurality of springs. The receiving plate is fixedly connected to the moving frame, and the springs are fixedly connected between the receiving plate and the contact plate.
[0014] By adopting the above technical solution, the distance between the receiving plate and the abutting plate can be changed by multiple springs. When large-diameter impurities with a hard texture enter between the fixed roller assembly and the moving roller assembly, the rotating roller in the moving roller assembly can move by a certain amplitude.
[0015] Optionally, a right-angle plate is fixedly connected to the chassis. A cushion plate is provided between the right-angle plate and the moving frame. An adjusting bolt is threadedly connected to the right-angle plate. The rod portion of the adjusting bolt is rotatably connected to the cushion plate. Under the action of the adjusting bolt, the cushion plate abuts against the upper end of the moving frame.
[0016] By adopting the above technical solution, by rotating the adjusting bolt, the adjusting bolt can be tightened against the moving frame, thereby increasing the friction between the moving frame and the chassis and reducing the moving amplitude between the moving frame and the chassis.
[0017] Optionally, a plurality of abutting rubber rings are sleeved on the moving roller. A cavity is formed in the abutting rubber ring. A plurality of V-shaped folding plates are fixedly connected in the cavity. The plurality of V-shaped folding plates are connected end to end and arranged around the axis of the abutting rubber ring. A connecting plate is fixedly connected to the V-shaped folding plate. An abutting arc plate is arranged in the cavity. The abutting arc plate includes two support plates rotatably connected together. The abutting arc plate abuts against the inner wall of the abutting rubber ring. A support assembly is provided between the connecting plate and the abutting arc plate for pressing the abutting arc plate against the inner wall of the abutting rubber ring.
[0018] By adopting the above technical solution, the rotating roller can be protected by setting the abutting rubber ring. At the same time, when large-diameter impurities press on the arc surface of the abutting rubber ring, the corresponding arc surface of the abutting rubber ring will collapse inward, so that the abutting arc plate applies an external force to the connecting plate through the support assembly, so that the abutting arc plate deforms by a certain amplitude. At the same time, when the deformation amplitude of the abutting arc plate reaches a certain range, the support plates will rotate towards the side close to each other, so that the support plates squeeze the two sides of the large-diameter impurities, thereby assisting in crushing the large-diameter impurities and reducing the volume of the large-diameter impurities.
[0019] Optionally, the support assembly includes a telescopic rod fixedly connected between the connecting plate and the abutting arc plate. A first rubber support rod is fixedly connected between the connecting plate and the abutting arc plate. A second rubber support rod is fixedly connected between the V-shaped folding plate and the abutting arc plate.
[0020] By adopting the above technical solution, the abutting arc plate can be supported and reset by the first rubber support rod and the second rubber rod, and the telescopic rod is set to support the rotation of the support plate.
[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. It can enable large straight particles with a harder texture to smoothly pass through the gap between the fixed roller and the moving roller, thereby reducing the damage degree of the large straight particles with a harder texture to the outer wall of the roller. 2. It can change the distance between the receiving plate and the abutting plate through multiple springs. When large-diameter impurities with a harder texture enter between the fixed roller assembly and the moving roller assembly, the rotating roller in the moving roller assembly can move by a certain amplitude. 3. By rotating the adjusting bolt, the adjusting bolt can be tightened against the moving frame, thereby increasing the friction between the moving frame and the bottom frame and reducing the moving amplitude between the moving frame and the bottom frame. Description of the Drawings
[0022] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application; Figure 2 is the structural schematic diagram of the right-angle plate of Embodiment 1 of the present application; Figure 3 is the overall structural schematic diagram of Embodiment 2 of the present application; Figure 4 is the structural schematic diagram of the V-shaped folding plate of Embodiment 2 of the present application; Figure 5 is the structural schematic diagram of the telescopic rod of Embodiment 2 of the present application.
[0023] In the figure, 1, bottom frame; 2, moving frame; 3, moving roller assembly; 31, second driving motor; 32, second speed reducer; 33, moving roller; 4, fixed roller assembly; 41, first driving motor; 42, first speed reducer; 43, fixed roller; 5, limiting component; 51, support rod; 52, oil cylinder; 53, abutting plate; 6, feed hopper; 7, buffer component; 71, spring; 72, receiving plate; 8, right-angle plate; 81, backing plate; 82, adjusting bolt; 9, abutting rubber ring; 91, cavity; 92, V-shaped folding plate; 93, connecting plate; 94, abutting arc plate; 941, support plate; 10, support component; 101, telescopic rod; 102, first rubber support rod; 103, second rubber support rod. Detailed Description of the Embodiment
[0024] The following will be further described in detail with reference to the attached Figure 1 - attached Figure 5 , to further illustrate the present application.
[0025] Embodiment 1 A low-pressure roller mill, referring to Figure 1 and Figure 2, including a chassis 1 erected on the ground, and a fixed roller assembly 4 is installed on the chassis 1. The fixed roller assembly 4 includes a first driving motor 41, a first speed reducer 42 and a fixed roller 43. The output shaft of the first driving motor 41 is shaft-connected to the first speed reducer 42, and the output shaft of the first speed reducer 42 is coaxially arranged and fixedly connected to the fixed roller 43. The first driving motor 41 and the first speed reducer 42 are both fixedly connected to the chassis 1, and the fixed roller 43 is rotatably connected to the chassis 1. Then, start the first driving motor 41, so that the first driving motor 41 drives the first speed reducer 42 to rotate, and then the first speed reducer 42 drives the fixed roller 43 to rotate.
[0026] A moving frame 2 is slidably connected to the upper end of the chassis 1, and the moving frame 2 slides along the length direction of the chassis 1. A moving roller assembly 3 is installed on the moving frame 2. The moving roller assembly 3 includes a second driving motor 31, a second speed reducer 32 and a moving roller 33. The second driving motor 31 and the second speed reducer 32 are both fixedly connected to the moving frame 2, the moving roller 33 is rotatably connected to the moving frame 2, the moving roller 33 and the fixed roller 43 are at the same height and arranged in parallel, and a gap for the material to pass through is left between the moving roller 33 and the fixed roller 43. The output shaft of the second driving motor 31 is shaft-connected to the second speed reducer 32, and the second speed reducer 32 is shaft-connected to the moving roller 33. Then, the second driving motor 31 can drive the second speed reducer 32 to rotate, and then the rotating roller rotates.
[0027] Above the moving roller assembly 3 and the fixed roller assembly 4, there is the same feed hopper 6, and the feed hopper 6 is fixedly connected to the chassis 1. Thus, the material can be added between the moving roller assembly 3 and the fixed roller assembly 4 through the feed hopper 6, so that the material is extruded and crushed.
[0028] A limiting component 5 for limiting the position of the moving roller assembly 3 is installed on the chassis 1. The limiting component 5 includes a plurality of support rods 51 fixedly connected to the chassis 1. In this embodiment, the support rods 51 are arranged as two and the support rods 51 are perpendicular to the upper end surface of the chassis 1. An oil cylinder 52 is installed on each support rod 51, and the oil cylinder 52 is fixedly connected to the support rod 51. The output shafts of the two oil cylinders 52 are hinged to the same abutting plate 53.
[0029] A buffer component 7 for connecting the two is provided between the abutting plate 53 and the moving frame 2. The buffer component 7 includes a receiving plate 72 and a plurality of springs 71. The receiving plate 72 is fixedly connected to the moving frame 2, and the receiving plate 72 is arranged in parallel with the abutting plate 53. The springs 71 are fixedly connected between the receiving plate 72 and the abutting plate 53.
[0030] Thus, the elongation and contraction of the oil cylinder 52 can be controlled to drive the abutting plate 53 to move, so that the abutting plate 53 drives the moving frame 2 to move through the buffer assembly 7, thereby changing the distance between the moving roller assembly 3 and the fixed roller assembly 4. At the same time, when large-diameter impurities with a hard texture enter between the fixed roller assembly 4 and the moving roller assembly 3, under the action of the large-diameter impurities, the spring 71 will undergo a certain degree of contraction deformation, so that the rotating roller in the moving roller assembly 3 can move a certain distance away from the fixed roller 43, so that large-diameter impurities with a hard texture can smoothly pass through the gap between the moving roller 33 and the fixed roller 43.
[0031] At the same time, in order to reduce the moving amplitude between the moving frame 2 and the chassis 1, a right-angle plate 8 is fixedly connected to the chassis 1, and a cushion plate 81 is provided between the right-angle plate 8 and the moving frame 2. In this embodiment, two cushion plates 81 are provided. Two adjusting bolts 82 are inserted through and threadedly connected to the right-angle plate 8, and the rod portion of the adjusting bolt 82 is rotatably connected to the cushion plate 81. Under the action of the adjusting bolt 82, the cushion plate 81 abuts against the upper end of the moving frame 2. Thus, by rotating the adjusting bolt 82, the adjusting bolt 82 can be tightened against the moving frame 2, thereby increasing the friction between the moving frame 2 and the chassis 1.
[0032] Embodiment 2 The difference from Embodiment 1 is that with reference to Figure 3 , Figure 4 and Figure 5 , a plurality of abutting rubber rings 9 are sleeved on the moving roller 33, and the material of the abutting rubber ring 9 is rubber with a certain deformation ability in the prior art. The plurality of abutting rubber rings 9 are arranged along the length direction of the moving roller 33. A cavity 91 is formed in the abutting rubber ring 9, and a plurality of V-shaped folding plates 92 are fixedly connected in the cavity 91. The plurality of V-shaped folding plates 92 are connected end to end and arranged around the axis of the abutting rubber ring 9. A connecting plate 93 is fixedly connected to the middle section of the V-shaped folding plate 92. The connecting plate 93 is arc-shaped and its inner arc surface faces the side of the V-shaped folding plate 92.
[0033] Inside the cavity 91, there is an abutting arc plate 94, and the abutting arc plate 94 corresponds to the V-shaped folding plate 92 one by one. The abutting arc plate 94 includes two support plates 941 rotatably connected together. The abutting arc plate 94 abuts against the inner wall of the abutting rubber ring 9. Between the connecting plate 93 and the abutting arc plate 94, there is a support assembly 10 for pressing the abutting arc plate 94 tightly against the inner wall of the abutting rubber ring 9. The support assembly 10 includes a telescopic rod 101 fixedly connected between the connecting plate 93 and the abutting arc plate 94. A first rubber support rod 102 is fixedly connected between the connecting plate 93 and the abutting arc plate 94. The first rubber rods are provided in two and are respectively located on both sides of the telescopic rod 101. A second rubber support rod 103 is fixedly connected between the V-shaped folding plate 92 and the abutting arc plate 94. The two first rubber rods are placed between the two second rubber support rods 103.
[0034] Furthermore, the rotating roller can be protected by the abutting rubber ring 9. When large-diameter and relatively hard impurities are pressed on the arc surface of the abutting rubber ring 9, the corresponding arc surface of the abutting rubber ring 9 will collapse inward, thereby causing the first rubber support rod 102 and the second rubber support rod 103 to bend to a certain extent. At the same time, the telescopic rod 101 will lock and contract, and at the same time, the support plate 941 in the abutting arc plate 94 will rotate to a certain extent, thereby causing the abutting arc plate 94 to deform to a certain extent. When the deformation amplitude of the abutting arc plate 94 reaches a certain range, the support plates 941 will rotate towards the side close to each other, and cause the abutting rubber ring 9 to deform to a certain extent, thereby causing the support plates 941 to squeeze both sides of the large-diameter impurities, thereby assisting in crushing the large-diameter impurities and reducing the volume of the large-diameter impurities.
[0035] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A low pressure roller mill, characterized in that: The invention comprises a base frame (1), the upper end of the base frame (1) is slidably connected to a movable frame (2), a movable roller assembly (3) is mounted on the movable frame (2), a fixed roller assembly (4) is mounted on the base frame (1), a limit assembly (5) for limiting the position of the movable roller assembly (3) is mounted on the base frame (1), the movable roller assembly (3) and the fixed roller assembly (4) are provided with a same feed hopper (6), and the feed hopper (6) is fixedly connected to the base frame (1).
2. A low pressure roller mill according to claim 1, characterized in that: The fixed roller assembly (4) comprises a first drive motor (41), a first reducer (42) and a fixed roller (43); the output shaft of the first drive motor (41) is connected to the shaft of the first reducer (42); the output shaft of the first reducer (42) is coaxially arranged with the fixed roller (43) and fixedly connected; the first drive motor (41) and the first reducer (42) are both fixedly connected to the base frame (1); and the fixed roller (43) is rotatably connected to the base frame (1).
3. A low pressure roller mill according to claim 1, characterized in that: The movable roller assembly (3) comprises a second drive motor (31), a second reducer (32) and a movable roller (33); the second drive motor (31) and the second reducer (32) are both fixedly connected to the movable frame (2); the movable roller (33) is rotatably connected to the movable frame (2); the output shaft of the second drive motor (31) is connected to the shaft of the second reducer (32); and the second reducer (32) is connected to the shaft of the movable roller (33).
4. A low pressure roller mill according to claim 1, characterized in that: The limiting assembly (5) comprises a plurality of support rods (51) fixedly connected to the base frame (1), each of the support rods (51) being mounted with an oil cylinder (52), an abutment plate (53) being hingedly connected to an output shaft of the oil cylinder (52), and a buffer assembly (7) for connecting the abutment plate (53) and the movable frame (2) being provided between the two.
5. A low pressure roller mill according to claim 4, characterized in that: The buffer assembly (7) comprises a receiving plate (72) and a plurality of springs (71); the receiving plate (72) is fixedly connected to the moving frame (2); and the springs (71) are fixedly connected between the receiving plate (72) and the abutting plate (53).
6. A low pressure roller mill according to claim 1, characterized in that: A right-angle plate (8) is fixedly connected to the base frame (1), a pad (81) is provided between the right-angle plate (8) and the movable frame (2), an adjusting bolt (82) is threadedly connected to the right-angle plate (8), a rod portion of the adjusting bolt (82) is rotatably connected to the pad (81), and under the action of the adjusting bolt (82), the pad (81) abuts against the upper end of the movable frame (2).
7. A low pressure roller mill according to claim 3, characterized in that: The movable roller (33) is sleeved with a plurality of abutting rubber rings (9), a cavity (91) is provided in the abutting rubber ring (9), a plurality of V-shaped folded plates (92) are fixedly connected in the cavity (91), the plurality of V-shaped folded plates (92) are connected at their ends and arranged around the axis of the abutting rubber ring (9), a connecting plate (93) is fixedly connected to the V-shaped folded plate (92), an abutting arc plate (94) is provided in the cavity (91), the abutting arc plate (94) comprises two supporting plates (941) rotatably connected together, the abutting arc plate (94) abuts against the inner wall of the abutting rubber ring (9), and a supporting component (10) for pressing the abutting arc plate (94) against the inner wall of the abutting rubber ring (9) is provided between the connecting plate (93) and the abutting arc plate (94).
8. A low pressure roller mill according to claim 7, characterized in that: The support assembly (10) comprises a telescopic rod (101) fixedly connected between the connecting plate (93) and the abutting arc plate (94), a first rubber support rod (102) fixedly connected between the connecting plate (93) and the abutting arc plate (94), and a second rubber support rod (103) fixedly connected between the V-shaped folding plate (92) and the abutting arc plate (94).
Citation Information
Patent Citations
Double-roller crusher
CN111841723A
Adjusting device for roller machine
CN215917596U
Soil block crushing rubber roller
CN217747252U
Pulverizer
CN221808620U
Guide Roller Of A Pair Of Feed Rollers Of A Granulating Device
US20170036215A1