Mechanically synchronized high pressure roll mill

Abstract

The application discloses a mechanical synchronous high-pressure roller mill, which comprises a machine body, a fixed roller assembly and a movable roller assembly installed on the machine body, and connecting supports installed on two ends of the movable roller assembly and facing away from the fixed roller assembly, wherein the two sets of connecting supports are connected with reverse action rods through joint bearings, the end of the reverse action rod is provided with a synchronous rocker arm, the two sets of synchronous rocker arms are jointly installed on a synchronous shaft, the two ends of the synchronous shaft are provided with synchronous bearing seats, and the synchronous bearing seats are fixed on the machine body. Compared with the traditional high-pressure roller mill, the mechanical synchronous device is added, but the displacement sensors on both sides are correspondingly reduced, the number of logic control points in the corresponding electric control system is reduced, and the cost of the electrical part is also reduced. The mechanical synchronous mechanism can make the equipment more stable during operation, the mechanical synchronization can simultaneously call the hydraulic systems on both sides, forcibly synchronize the operation of the roller system, and keep the same pressure. The internal pressure of the pressure cylinders on both sides is balanced, the hydraulic elements on both sides are uniformly stressed, and the service life is greatly prolonged.

Description

Technical Field

[0001] This invention belongs to the field of crushing roller mills, specifically a mechanically synchronized high-pressure roller mill. Background Technology

[0002] High-pressure roller mills are highly efficient and energy-saving crushing equipment, differing fundamentally from traditional crushing technologies in two key ways. Firstly, they employ quasi-static pressure crushing, saving approximately 30% more energy compared to impact crushing. Secondly, they utilize layer-by-layer crushing, where materials crush each other. This principle significantly improves crushing efficiency and reduces wear compared to traditional crushing and ball milling techniques. The compressive stress between materials can be adjusted via roller pressure. The entire milling process is achieved through two opposing rotating rollers, one fixed and the other movable. Since the moving roller's forward movement is powered by hydraulic cylinders on both sides, relative deviations occur, making synchronized advancement of both cylinders difficult. During the moving roller's retraction, the material's reaction force pushes it away. Uneven material layer thickness directly leads to a persistent misalignment between the moving and fixed roller centers, potentially causing machine shutdown or even damage to the main bearing.

[0003] Currently, all high-pressure roller mill equipment uses displacement sensors. A specific solution for a traditional high-pressure roller mill can be found here. Figure 1 It comprises 1. a transmission system, 2. a frame, 3. a fixed roller, 4. a moving roller, 5. a displacement sensor, and 6. a hydraulic system. The main implementation steps are: 1. Start the transmission system 1; the fixed roller 3 and the moving roller 4 rotate and compress the material. During operation, the moving roller 4 will experience axial displacement. The displacement sensor 5 will detect the misalignment distance between the two bearing seats of the moving roller. If it exceeds a preset value, the hydraulic system 6 will be activated to correct the deviation of the moving roller. Because the hydraulic system has a lag in response and cannot process data from the main control system in a timely manner, and because the distance between the rollers changes rapidly during operation, if this real-time data is reflected in the hydraulic system, it will cause frequent hydraulic system corrections. This can lead to rapid damage to the hydraulic system. Therefore, it is set that the deviation of the two rollers is within a certain range and is considered normal. The hydraulic system will only participate in correction when this range is exceeded. Even under these conditions, for most equipment, accidents such as excessive roller misalignment leading to direct shutdown still frequently occur. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0005] A mechanically synchronized high-pressure roller mill includes a machine body 10 and a fixed roller assembly 20 and a moving roller assembly 30 mounted on the machine body 10. It also includes connecting supports 31 mounted on both ends of the moving roller assembly 30 on the side opposite to the fixed roller assembly 20. Both sets of connecting supports 31 are connected to a counteracting rod 32 through a spherical bearing. A synchronous rocker arm 33 is mounted at the end of the counteracting rod 32. Both sets of synchronous rocker arms 33 are mounted on a synchronous shaft 35. Synchronous bearing seats 34 are mounted at both ends of the synchronous shaft 35 and are fixed to the machine body 10.

[0006] Preferably, each set of connecting supports 31 is arranged in two sets, one above the other, on the side of the moving roller assembly 30 facing away from the fixed roller assembly;

[0007] Synchronous gears 351 are installed on both sets of synchronous shafts 35. Two transmission gear plates 352 are installed on the machine body 10. The synchronous gears 351 and transmission gear plates 352 mesh with each other. Both transmission gear plates 352 are vertically slidably installed on the machine body 10. Transmission gears 11 are installed on the machine body 10. The transmission gear plates 352 are located on both sides of the transmission gears 11. A toothed structural surface is provided on the opposite side of the transmission gear plates 352, and the toothed structural surface meshes with the transmission gears 11.

[0008] Preferably, each of the transmission gear plates 352 is fitted with two guide sleeves 3521. Two guide sleeves 3521 are provided and are respectively located on both sides of the transmission gear 11. The guide sleeves 3521 are fixed on the machine body 10. A guide groove 3522 is provided in the guide sleeve 3521. A limit strip 3523 is installed on the transmission gear plate 352. The limit strip 3523 and the guide groove 3522 are compatible.

[0009] Preferably, a connecting bracket 311 is installed on the two connecting supports 31, and a vertical guide frame 3111 is installed on the connecting bracket 311. A limiting head 3112 is installed at the end of the vertical guide frame 3111 away from the connecting bracket 311. A vertically arranged limiting groove 3113 is installed on the body 10. The limiting head 3112 is vertically engaged in the limiting groove 3113. The vertical guide frame 3111 has a telescopic structure in the direction perpendicular to the body 10.

[0010] Preferably, the limiting head 3112 includes two symmetrically distributed connecting rollers, and the inner wall of the limiting rail groove 3113 is provided with a vertical limiting groove for limiting the horizontal movement of the connecting rollers along the axis of the parallel moving roller assembly 30.

[0011] Preferably, a support plate 312 is installed on the two connecting supports 31, a drive arm 313 is installed on the support plate 312, a transmission rod 314 is rotatably installed on the free end of the drive arm 313, two limiting plates 315 are installed on the machine body 10, the limiting plates 315 are symmetrically distributed and set parallel to the axis of the fixed roller assembly 20, a moving block 316 is slidably installed in the two limiting plates 315, the moving block 316 and the transmission rod 314 are rotatably engaged, a moving plate 317 is installed on the moving block 316, a transmission gear disk 318 is installed on the machine body 10, the two moving plates 317 are respectively located on the upper and lower sides of the transmission gear disk 318, and the transmission gear disk 318 and the two moving plates 317 are meshed and matched.

[0012] Preferably, a fixing sleeve 12 is installed on the body 10. Two fixing sleeves 12 are respectively located on both sides of the transmission gear plate 318. A moving groove 121 is installed inside the fixing sleeve 12. A protruding ridge 122 that matches the moving groove 121 is provided on the moving plate 317.

[0013] Beneficial effects

[0014] Firstly, compared to the traditional high-pressure roller mill structure, it incorporates an additional mechanical synchronization device, but correspondingly reduces the number of displacement sensors on both sides. This reduction in the number of logic control points in the electrical control system also lowers the cost of the electrical components. The mechanical synchronization mechanism enhances the stability of the equipment during operation. It also simultaneously activates the hydraulic systems on both sides, forcing the roller system to operate synchronously and maintain equal pressure. This balances the internal pressure of the pressure cylinders on both sides, ensuring uniform force on the hydraulic components and significantly extending their service life. Furthermore, this mechanism ensures uniform force on the bearings on both sides of the roller system, reducing the risk of sudden stops due to excessive eccentricity and further increasing the lifespan of the bearings.

[0015] Secondly, the mechanical synchronization mechanism can be symmetrically distributed on the upper and lower sides of the hydraulic cylinder. The vertical synchronous action on both sides can be achieved by setting and cooperating with the transmission tooth plate and transmission gear on both sides. The vertical synchronization direction is opposite. Even if the roller pressure difference on one side between the fixed roller and the moving roller exceeds the set range, the up and down synchronous movement can ensure the roller grinding force and prevent the vertical axis deviation caused by the roller pressure difference exceeding the range during roller grinding. This ensures the upper and lower positions of the hydraulic cylinder, bearing seat and connection, and avoids eccentric posture axis deviation.

[0016] Finally, two horizontal alignment structures are installed on the machine body. Between the two hydraulic cylinders, the moving plate is driven to move synchronously and in opposite directions through the transmission gear plate, which can realize automatic horizontal alignment and thus always ensure the vertical position of the hydraulic cylinder, bearing seat and connection, and avoid shaft misalignment. Attached Figure Description

[0017] Figure 1 A schematic diagram illustrating the operation and correction of a traditional high-pressure roller mill.

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is the main view of the present invention. Figure 1 ;

[0020] Figure 4 Top view of the present invention Figure 1 ;

[0021] Figure 5 Top view of the present invention Figure 2 ;

[0022] Figure 6 This is the main view of the present invention. Figure 2 ;

[0023] Figure 7 for Figure 6 Position distribution diagram of the transmission gear plate and transmission gear;

[0024] Figure 8 This is a diagram showing the positional relationship between the transmission gear plate and the guide sleeve.

[0025] Figure 9 Top view of the present invention Figure 3 ;

[0026] Figure 10 for Figure 9 Position distribution diagram of the central transmission gear plate and the moving plate;

[0027] Figure 11 This is a diagram showing the positional relationship between the movable plate and the fixed sleeve.

[0028] In the diagram: 10. Machine body; 11. Transmission gear; 12. Fixed sleeve; 121. Moving groove; 122. Protruding rib; 20. Fixed roller assembly; 30. Moving roller assembly; 31. Connecting support; 311. Connecting bracket; 3111. Vertical guide frame; 3112. Limiting head; 3113. Limiting rail groove; 312. Support plate; 313. Drive arm; 314. Transmission rod; 315. Limiting plate; 316. Moving block; 317. Moving plate; 318. Transmission gear plate; 32. Reverse action rod; 33. Synchronous rocker arm; 34. Synchronous bearing seat; 35. Synchronous shaft; 351. Synchronous gear; 352. Transmission gear plate; 3521. Guide sleeve; 3522. Guide groove; 3523. Limiting strip. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example 1

[0032] like Figure 2 , 3 As shown in Figure 4, a mechanically synchronized high-pressure roller mill includes a machine body 10 and a fixed roller assembly 20 and a moving roller assembly 30 mounted on the machine body 10. It also includes connecting supports 31 mounted on both ends of the moving roller assembly 30 on the side opposite to the fixed roller assembly 20. Both sets of connecting supports 31 are connected to a counteracting rod 32 through a spherical bearing. A synchronous rocker arm 33 is mounted at the end of the counteracting rod 32. Both sets of synchronous rocker arms 33 are mounted on a synchronous shaft 35. Synchronous bearing seats 34 are mounted on both ends of the synchronous shaft 35. The synchronous bearing seats 34 are fixed to the machine body 10.

[0033] By activating the transmission system, the fixed roller assembly 20 and the moving roller assembly 30 rotate and extrude the material. During operation, the unevenness of the material will cause the two bearing seats of the moving roller assembly 30 to shift. The bearing seats will transmit the shift to the reverse action rod 32 through the connecting support 31 until the synchronous rocker arm 33. The synchronous rocker arm 33 will rotate around the synchronous bearing seat 34 and transmit the shift to the other bearing seat of the moving roller assembly 30 through the same connection. Since the reverse action rods 32 are all connected by spherical bearings, the gap is small and can be ignored for the roller mill, thus achieving the purpose of synchronization.

[0034] Example 2, as Figure 5 As shown, in the high-pressure roller mill, in order to avoid the unevenness of the material causing the moving roller assembly to deviate from the joint bearing, resulting in the hydraulic cylinder and bearing seat deviating from the bearing, connecting brackets 311 are installed on the two connecting supports 31. Vertical guide frames 3111 are installed on each connecting bracket 311. A limiting head 3112 is installed at the end of the vertical guide frame 3111 away from the connecting bracket 311. A vertically arranged limiting groove 3113 is installed on the machine body 10. The limiting head 3112 is vertically fitted into the limiting groove 3113. The vertical guide frame 3111 is a telescopic structure in the direction perpendicular to the machine body 10.

[0035] The limiting head 3112 includes two symmetrically distributed connecting rollers. The inner wall of the limiting rail groove 3113 is provided with a vertical limiting groove for limiting the horizontal movement of the connecting rollers along the axis of the parallel moving roller assembly 30. The vertical guide frame 3111 can slide vertically relative to the machine body 10, thereby overcoming the problem of the bearing seat being off-axis relative to the joint bearing. Since the vertical guide frame 3111 is a telescopic structure in the direction perpendicular to the machine body 10, it can adapt to structural movement.

[0036] Example 3, as Figure 6 , 7 As shown in Figure 8, in the high-pressure roller mill, each set of connecting supports 31 is arranged vertically on the side of the moving roller assembly 30 facing away from the fixed roller assembly. Synchronous gears 351 are installed on both sets of synchronous shafts 35. Two transmission gear plates 352 are installed on the machine body 10. The synchronous gears 351 and the transmission gear plates 352 mesh. The two transmission gear plates 352 are vertically slidably installed on the machine body 10. A transmission gear 11 is installed on the machine body 10. The transmission gear plates 352 are located on both sides of the transmission gear 11. A toothed structural surface is provided on the opposite side of the transmission gear plate 352, and the toothed structural surface meshes with the transmission gear 11.

[0037] Two guide sleeves 3521 are fitted on each of the transmission gear plates 352. Two guide sleeves 3521 are provided and are located on both sides of the transmission gear 11 respectively. The guide sleeves 3521 are fixed on the machine body 10. A guide groove 3522 is provided inside the guide sleeve 3521. A limit strip 3523 is installed on the transmission gear plate 352. The limit strip 3523 and the guide groove 3522 are compatible.

[0038] The mechanical synchronization device is set between the machine body 10 and the bearing seat, and achieves stable horizontal movement through the transmission gear plate 352 and the guide sleeve 3521. Then, the synchronous movement on the other side is simultaneously reversed through the transmission gear 11 and the synchronization gear 351. Even if the roller pressure difference on one side between the fixed roller and the moving roller exceeds the set range, the up and down synchronous movement can ensure the roller grinding force and prevent the vertical shaft deviation caused by the roller pressure difference exceeding the range during roller grinding. This ensures the vertical position of the hydraulic cylinder, the bearing seat and the connection, and avoids eccentric posture shaft deviation.

[0039] There are two transmission gears 11 and four transmission gear plates 352, arranged in pairs on the inner or outer sides of the two transmission gears 11 respectively. This arrangement is mechanically stable and mutually balanced.

[0040] Example 4, as Figure 9 , 10As shown in Figure 11, in the high-pressure roller mill of Embodiment 3, in order to avoid the unevenness of the material causing the moving roller assembly to deviate from the joint bearing and thus causing the hydraulic cylinder and bearing seat to deviate horizontally, a support plate 312 is installed on the two connecting supports 31. A drive arm 313 is installed on the support plate 312. A transmission rod 314 is rotatably installed on the free end of the drive arm 313. Two limiting plates 315 are installed on the machine body 10. The limiting plates 315 are symmetrically distributed and set parallel to the axis of the fixed roller assembly 20. A moving block 316 is slidably installed in the two limiting plates 315. The moving block 316 and the transmission rod 314 are rotatably engaged. A moving plate 317 is installed on the moving block 316. A transmission gear plate 318 is installed on the machine body 10. The two moving plates 317 are located on the upper and lower sides of the transmission gear plate 318, respectively, and the transmission gear plate 318 and the two moving plates 317 are meshed and matched.

[0041] The body 10 is equipped with a fixing sleeve 12. Two fixing sleeves 12 are respectively located on both sides of the transmission gear disk 318. A moving groove 121 is installed inside the fixing sleeve 12. The moving plate 317 is provided with a protruding ridge 122 that matches the moving groove 121. There are two transmission gear disks 318 and four moving plates 317, which are arranged in pairs and located on the inner or outer sides of the two transmission gear disks 318.

[0042] The horizontal linear movement of the moving plate 317 is achieved through the fixed sleeve 12 and the moving groove 121 via the protrusion 122, thereby ensuring the stability of the movement of the moving plate 317. Secondly, the forward and backward movement of the drive arm 313 can drive the transmission rod to drive the moving plate 317 to move horizontally and linearly. Synchronization on both sides is achieved through the transmission gear plate 318. Since the deflection axis of the transmission rod is in the vertical direction, horizontal deflection can be achieved, thereby ensuring the horizontal axis movement of the structure, and thus achieving synchronous and opposite movements on both sides, avoiding the problem of horizontal deflection of the hydraulic cylinder and bearing seat.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A mechanically synchronized high-pressure roller mill, comprising a body (10) and a fixed roller assembly (20) and a moving roller assembly (30) mounted on the body (10), characterized in that, It also includes connecting supports (31) installed at both ends of the moving roller assembly (30) on the side opposite to the fixed roller assembly (20). Both sets of connecting supports (31) are connected to a reverse action rod (32) through a spherical bearing. A synchronous rocker arm (33) is installed at the end of the reverse action rod (32). Both sets of synchronous rocker arms (33) are installed on a synchronous shaft (35). Synchronous bearing seats (34) are installed at both ends of the synchronous shaft (35). The synchronous bearing seats (34) are fixed on the machine body (10). Each set of connecting supports (31) is arranged in two sets on the side of the moving roller assembly (30) facing away from the fixed roller assembly; Synchronous gears (351) are installed on both sets of synchronous shafts (35), and two transmission gear plates (352) are installed on the machine body (10). The synchronous gears (351) and transmission gear plates (352) mesh with each other. Both transmission gear plates (352) are vertically slidably installed on the machine body (10). Transmission gears (11) are installed on the machine body (10). The transmission gear plates (352) are located on both sides of the transmission gears (11). The opposite side of the transmission gear plates (352) is provided with a tooth-shaped structural surface, and the tooth-shaped structural surface meshes with the transmission gears (11). A support plate (312) is installed on the two connecting supports (31), a drive arm (313) is installed on the support plate (312), a transmission rod (314) is rotatably installed on the free end of the drive arm (313), two limiting plates (315) are installed on the machine body (10), the limiting plates (315) are symmetrically distributed and set parallel to the axis of the fixed roller assembly (20), a moving block (316) is slidably installed in the two limiting plates (315), the moving block (316) and the transmission rod (314) are rotatably engaged, a moving plate (317) is installed on the moving block (316), a transmission gear disc (318) is installed on the machine body (10), the two moving plates (317) are located on the upper and lower sides of the transmission gear disc (318) respectively, and the transmission gear disc (318) and the two moving plates (317) are meshed and matched.

2. The mechanically synchronized high-pressure roller mill according to claim 1, characterized in that, Two guide sleeves (3521) are fitted on each of the transmission gear plates (352). There are two guide sleeves (3521) and they are located on both sides of the transmission gear (11). The guide sleeves (3521) are fixed on the machine body (10). A guide groove (3522) is provided inside the guide sleeve (3521). A limit strip (3523) is installed on the transmission gear plate (352). The limit strip (3523) and the guide groove (3522) are compatible.

3. The mechanically synchronized high-pressure roller mill according to claim 1, characterized in that, There are two transmission gears (11) and four transmission gear plates (352), which are located in pairs on the inner or outer sides of the two transmission gears (11).

4. The mechanically synchronized high-pressure roller mill according to claim 1, characterized in that, The body (10) is equipped with a fixed sleeve (12), which has two parts located on both sides of the transmission gear plate (318). The fixed sleeve (12) is equipped with a moving groove (121), and the moving plate (317) is equipped with a protruding ridge (122) that matches the moving groove (121).

5. A mechanically synchronized high-pressure roller mill according to claim 1, characterized in that, There are two transmission gear discs (318) and four moving plates (317), which are located in pairs on the inner or outer sides of the two transmission gear discs (318).

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