High-pressure roller mill

Abstract

The high-pressure roller mill comprises a machine body, a crushing mechanism is installed in the machine body, the crushing mechanism comprises two roller shafts rotationally connected to the interior of the machine body, a through opening with the same length as the roller shafts is formed in the upper end of the machine body, and a sealing plate is slidably connected to the through opening; a feeding port is formed in the sealing plate, the machine body is connected with a driving mechanism for driving the sealing plate to reciprocate in the length direction of the roller shaft, and the feeding port is communicated with the through port. The crushing device has the effects of reducing the situation of material accumulation and ensuring the crushing efficiency.

Description

Technical Field

[0001] This application relates to the field of roller mills, and in particular, to a high-pressure roller mill. Background Art

[0002] There are two fundamental differences between high-pressure roller mills and traditional crushing technologies. First, high-pressure roller mills implement quasi-static pressure crushing, which can save energy compared to impact crushing. Second, high-pressure roller mills perform layer crushing on materials, which is the mutual crushing between materials. The crushing efficiency is significantly improved compared to traditional crushing and ball milling technologies, and the wear is also significantly reduced. The extrusion stress between materials can be adjusted through the roller pressure. The entire roller milling process is achieved by two oppositely rotating rollers, one of which is fixed and the other can move.

[0003] The high-pressure roller mills in related technologies include a machine body and a feed inlet opened on the machine body. Materials enter the interior of the machine body through the feed inlet and are then crushed. However, the materials entering the machine body through the feed inlet usually accumulate in the middle of the two rollers, easily causing material accumulation at the feed inlet and resulting in low crushing efficiency. Summary of the Invention

[0004] In order to reduce the occurrence of material accumulation and ensure the crushing efficiency, this application provides a high-pressure roller mill.

[0005] The high-pressure roller mill provided by this application adopts the following technical solutions: A high-pressure roller mill includes a machine body. A crushing mechanism is installed inside the machine body. The crushing mechanism includes two roller shafts rotatably connected inside the machine body. A through opening equal in length to the roller shafts is opened at the upper end of the machine body. A sealing plate is slidably connected at the through opening. A feed inlet is opened on the sealing plate. A driving mechanism for driving the sealing plate to reciprocate along the length direction of the roller shafts is connected to the machine body. The feed inlet communicates with the through opening.

[0006] By adopting the above technical solutions, the high-pressure roller mill can realize the automatic reciprocating movement of the sealing plate during the crushing process, thereby adjusting the position of the feed inlet to ensure that the materials can be evenly distributed between the two roller shafts for crushing. This design not only improves the crushing efficiency but also effectively reduces the problem of equipment wear caused by material accumulation or uneven distribution, and prolongs the service life of the equipment.

[0007] Preferably, the driving mechanism includes two fixing blocks fixedly connected to the upper surface of the machine body. A driving lead screw is rotatably connected between the two fixing blocks. A nut is fixedly connected to one side wall of the sealing plate. The driving lead screw is threadedly connected to the nut. A driving motor for adjusting the forward and reverse rotation of the driving lead screw is fixedly connected to the machine body.

[0008] By adopting the above technical solution, the driving mechanism can realize the reciprocating motion of the sealing plate along the length direction of the roller shaft. The specific effects include: first, through the cooperation of the fixed block and the driving screw, a stable and reliable transmission structure is provided for the movement of the sealing plate; second, by using the threaded connection between the nut and the driving screw, the rotational motion of the driving screw is converted into the linear motion of the sealing plate, thereby improving the motion accuracy; third, by adjusting the positive and negative rotation of the driving screw through the driving motor, the movement direction of the sealing plate is flexibly controlled, thereby optimizing the uniformity and controllability of the feeding process.

[0009] Preferably, two limiting plates are slidably connected in the feed port, the upper ends of the two limiting plates are bent in a direction away from each other to form a baffle, the bottom surface of each baffle contacts the upper surface of the sealing plate, and the sealing plate is connected to an adjustment mechanism for driving the two limiting plates to move in a direction towards or away from each other.

[0010] By adopting the above technical solution, the size of the feed port can be flexibly adjusted according to actual processing requirements. When processing high-hardness ores, reducing the opening of the feed port can effectively reduce the impact of the material on the roller surface, reducing the wear and damage of the roller surface; when processing smaller volumes of material, increasing the opening of the feed port helps reduce the occurrence of material blockage and improve the operating efficiency and stability of the equipment.

[0011] Preferably, the sealing plate is a hollow structure, and the adjusting mechanism includes an adjusting screw fixedly connected to a side surface opposite to the two limiting plates, and the two side walls of the feed port begin to have connecting ports connected to the interior of the sealing plate, one end of each adjusting screw passes through the connecting port and extends into the interior of the sealing plate, and the sealing plate is rotatably connected to two gears 1, each adjusting screw is threadedly connected to one of the gears 1, and the two adjusting screws rotate in opposite directions, and the inner side wall of the sealing plate is rotatably connected to a rotating shaft, and each end of the rotating shaft is coaxially fixed with a gear 2, and each gear 2 is meshed with a corresponding gear 1, and the sealing plate is fixedly connected to an adjusting motor that drives the rotating shaft to rotate forward and reverse.

[0012] By adopting the above technical solution, when the adjusting motor drives the rotating shaft to rotate forward and backward, it can drive the two gears 2 to rotate synchronously. Since gear 2 is meshed with gear 1, the two gears 1 can rotate synchronously. The two gears 1 are respectively connected to the two adjusting screws with threads, and the rotation directions of the two adjusting screws are opposite, so the two limiting plates can move synchronously in opposite directions in the feed port to achieve precise adjustment of the feed port width. At the same time, the hollow structure of the sealing plate provides installation space for the adjustment mechanism, ensuring the compact structure of the entire device, and effectively improving the degree of automation of the equipment and the flexibility of feed control.

[0013] Preferably, the lower ends of each of the limiting plates are lower than the bottom surface of the sealing plate. Contact sensors are fixedly connected to the mutually remote side surfaces of the two limiting plates. Each contact sensor is electrically connected to a controller, and the controller is electrically connected to the driving motor.

[0014] By adopting the above technical solution, when the contact sensor at the lower end of the limiting plate touches the inner side wall of the machine body, it can timely send a signal to the driving motor, and the driving motor controls the driving lead screw to rotate in the reverse direction, thereby driving the sealing plate to move in the reverse direction. This can effectively reduce the occurrence of the situation where the feeding port and the through port are misaligned and separated due to excessive movement of the sealing plate, ensure the stability of the feeding process, and at the same time maintain a good fit between the sealing plate and the machine body.

[0015] Preferably, an installation groove is formed in the upper surface of the machine body. The sealing plate is slidably connected to the installation groove. A sealing gasket is fixedly connected to the bottom surface of the installation groove. The through port is formed in the bottom surface of the installation groove and penetrates through the sealing gasket. The bottom surface of the sealing plate contacts the sealing gasket. A control member for adjusting the vertical movement of the sealing plate is connected to the sealing plate.

[0016] By adopting the above technical solution, the sliding connection between the sealing plate and the installation groove makes the movement of the sealing plate in the horizontal direction more stable, reducing the occurrence of the situation where the sealing plate is offset during the reciprocating movement. The setting of the sealing gasket can effectively reduce the occurrence of the situation where materials leak from the gap between the sealing plate and the installation groove, improving the sealing performance of the equipment. In addition, the control member for adjusting the vertical movement of the sealing plate enables the sealing plate to adjust the contact pressure with the sealing gasket according to the actual working conditions, ensuring the stability of the seal.

[0017] Preferably, a vertically arranged guiding groove is formed in one side surface of the lead nut. A connecting member slidably connected to the guiding groove is fixedly connected to the upper surface of the sealing plate. The control member includes a threaded rod rotatably connected in the guiding groove and threadedly connected to the connecting member. One end of the threaded rod penetrates through the lead nut.

[0018] By adopting the above technical solution, the connecting member is slidably connected to the guiding groove, and precise adjustment of the vertical position is achieved through the threaded fit between the threaded rod and the connecting member. At the same time, the design that the threaded rod penetrates through the lead nut ensures the stability and operability of the structure, effectively improving the precise control ability of the sealing plate during vertical movement.

[0019] Preferably, the sealing gasket is of a hollow structure. A sponge layer is filled in the sealing gasket. An oil injection hole is formed in one side wall of the sealing gasket. A sealing plug is clamped in the oil injection hole. A plurality of oil seepage holes are formed in the sealing gasket.

[0020] By adopting the above technical solution, the gasket adopts a hollow structure and is filled with a sponge layer, which can improve the elastic performance of the gasket, provide a better sealing effect when the sealing plate contacts the gasket, and at the same time reduce the pressure impact of the sealing plate on the gasket. The oil injection hole is opened and cooperated with the oil seepage hole, so that lubricating oil can be injected into the gasket and evenly distributed to the surface of the gasket through the oil seepage hole, thereby reducing the friction between the sealing plate and the gasket and extending the service life of both. The sealing plug clamped in the oil injection hole effectively reduces the occurrence of lubricating oil leakage and ensures the reliable operation of the device.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. Materials can be evenly distributed between the two roller shafts for crushing, effectively reducing the problem of equipment wear caused by material accumulation or uneven distribution, and extending the service life of the equipment; 2. The size of the feed inlet can be flexibly adjusted according to actual processing requirements; 3. The contact pressure between the sealing plate and the gasket can be adjusted according to the actual working conditions to ensure the stability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic diagram showing the overall structure of the high-pressure roller mill embodied in the embodiment of the present application.

[0023] Figure 2 FIG. is a schematic diagram showing the internal structure of the sealing plate embodied in the embodiment of the present application.

[0024] Figure 3 FIG. is a schematic diagram showing the structure of the drive mechanism embodied in the embodiment of the present application.

[0025] Figure 4 FIG. is a schematic diagram showing the structure of the adjustment mechanism embodied in the embodiment of the present application.

[0026] Figure 5 FIG. is a schematic diagram showing the structure of the gasket embodied in the embodiment of the present application.

[0027] Description of the reference numerals: 1, body; 11, through port; 12, installation groove; 2, crushing mechanism; 21, roller shaft; 3, sealing plate; 31, feed inlet; 32, communication port; 4, drive mechanism; 41, fixed block; 42, drive lead screw; 43, nut; 431, guide groove; 44, drive motor; 5, limiting plate; 51, baffle; 6, adjustment mechanism; 61, adjustment lead screw; 611, guide post; 62, gear one; 63, rotating shaft; 64, gear two; 65, mounting block; 66, adjustment motor; 67, contact sensor; 7, gasket; 71, sponge layer; 72, oil injection hole; 73, oil seepage hole; 8, sealing plug; 9, control member; 91, threaded rod; 92, connecting member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further elaborates on this application in conjunction with the attached Figures 1 - 5 drawings for a more detailed description.

[0029] An embodiment of this application discloses a high-pressure roller mill. Referring to Figure 1 and Figure 2 , the high-pressure roller mill includes a machine body 1, inside which a crushing mechanism 2 for crushing materials is installed. The crushing mechanism 2 includes two roller shafts 21 rotatably connected inside the machine body 1. An opening 11 equal in length to the roller shafts 21 is provided at the upper end of the machine body 1. An installation groove 12 is provided on the upper surface of the machine body 1, the opening 11 is provided on the bottom wall of the installation groove 12, and a sealing plate 3 is slidably connected inside the installation groove 12.

[0030] A feed inlet 31 is provided on the sealing plate 3, and a driving mechanism 4 for driving the sealing plate 3 to reciprocate along the length direction of the roller shafts 21 is connected to the machine body 1. The feed inlet 31 is communicated with the opening 11, achieving the effect of automatically adjusting the position of the feed inlet 31 and ensuring the sealing performance.

[0031] Referring to Figure 2 and Figure 3 , the driving mechanism 4 includes a fixed block 41 and a driving lead screw 42. The number of fixed blocks 41 is two, which are respectively fixedly connected to both ends of the upper surface of the machine body 1. A driving lead screw 42 is rotatably connected between the two fixed blocks 41. A nut 43 is fixedly connected to one side wall of the sealing plate 3, and the driving lead screw 42 passes through the nut 43 and is threadedly connected to the nut 43. A driving motor 44 is fixedly connected to the top surface of the machine body 1, and the output shaft of the driving motor 44 is coaxially fixed to one end of the driving lead screw 42.

[0032] When the driving motor 44 is started and drives the driving lead screw 42 to rotate forward and backward, it can drive the sealing plate 3 to reciprocate axially along the driving lead screw 42. The reciprocating movement of the sealing plate 3 drives the feed inlet 31 to reciprocate along the length direction of the roller shafts 21, thereby adjusting the position of the feed inlet 31.

[0033] The sealing plate 3 is of a hollow structure, and a plurality of reinforcing ribs are designed inside the sealing plate 3 to improve the overall strength and rigidity.

[0034] Two limiting plates 5 are slidably connected in the feed inlet 31. The two limiting plates 5 are distributed along the length direction of the opening 11. The upper ends of the two limiting plates 5 are bent away from each other to form baffles 51. The bottom surface of each baffle 51 contacts the upper surface of the sealing plate 3 and is slidably connected to the sealing plate 3. An adjusting mechanism 6 for driving the two limiting plates 5 to move closer to or away from each other is connected to the sealing plate 3. This design can effectively reduce the occurrence of materials overflowing from both sides of the feed inlet 31, and at the same time, the dynamic control of the width of the feed inlet 31 is realized by adjusting the position of the limiting plates 5.

[0035] The distance between the two limiting plates 5 is adjusted by the adjusting mechanism 6, thereby adjusting the width of the feed inlet 31, and thus adjusting the feeding area of the feed inlet 31.

[0036] Referring to Figure 2 and Figure 4 , the adjusting mechanism 6 includes two adjusting lead screws 61, two first gears 62, a rotating shaft 63 and two second gears 64. One limiting plate 5 corresponds to one adjusting lead screw 61, and the mutually facing sides of the two limiting plates 5 are both fixedly connected to the corresponding adjusting lead screw 61. The mutually facing sides of the two limiting plates 5 are also both fixedly connected with guiding columns 611. The sealing plate 3 is of a hollow structure, and both side walls of the feed inlet 31 are provided with communication ports 32 communicating with the inside of the sealing plate 3, and two communication ports 32 are provided on each side wall. One end of each adjusting lead screw 61 passes through a communication port 32 and extends into the inside of the sealing plate 3, and one end of each guiding column 611 also passes through the corresponding communication port 32 and extends into the inside of the sealing plate 3.

[0037] Each first gear 62 is rotatably connected to an inner side wall of the sealing plate 3, one end of each adjusting lead screw 61 is threadedly connected to the corresponding first gear 62, and the rotation directions of the two adjusting lead screws 61 are opposite. Two mounting blocks 65 are fixedly connected to an inner side wall of the sealing plate 3, the rotating shaft 63 is rotatably connected between the two mounting blocks 65, each second gear 64 is coaxially fixed to one end of the rotating shaft 63, and each second gear 64 meshes with the corresponding first gear 62. An adjusting motor 66 is fixedly connected to the inside of the sealing plate 3, and the output shaft of the adjusting motor 66 is coaxially fixed to the rotating shaft 63.

[0038] When the adjusting motor 66 is started, the adjusting motor 66 drives the rotating shaft 63 to rotate forward and backward, the rotating shaft 63 drives the two second gears 64 to rotate synchronously, and then drives the two first gears 62 to rotate synchronously. The rotation of the two first gears 62 can drive the two adjusting lead screws 61 to move in the direction of approaching or separating from each other, and finally realize the synchronous opening and closing actions of the two limiting plates 5.

[0039] The lower end of each limiting plate 5 extends into the machine body 1, and the bottom end of the limiting plate 5 is lower than the bottom surface of the sealing plate 3. Contact sensors 67 are fixedly connected to the mutually facing sides of the two limiting plates 5. Each contact sensor 67 is electrically connected to a controller, and the controller is electrically connected to the driving motor 44. When the driving motor 44 drives the driving lead screw 42 to rotate to drive the sealing plate 3 to move, when the sealing plate 3 moves to contact the inner wall of the machine body 1 by one of the limiting plates 5, the contact sensor 67 emits a signal, the controller receives the signal and controls the driving motor 44 to drive the driving lead screw 42 to rotate in the reverse direction, reducing the occurrence of the situation that the feed inlet 31 is misaligned and separated from the through port 11 due to excessive movement of the sealing plate 3.

[0040] A sealing gasket 7 is fixedly connected to the bottom wall of the installation groove 12. The bottom wall of the sealing plate 3 abuts against the sealing gasket 7, and the through port 11 penetrates through the sealing gasket 7. The sealing gasket 7 is of a hollow structure, and a sponge layer 71 is filled inside the sealing gasket 7. The sealing gasket 7 and the sponge layer 71 can elastically deform when subjected to pressure, thereby improving the sealing effect.

[0041] Refer to Figure 2 and Figure 5 On one side wall of the sealing gasket 7, an oil injection hole 72 is opened. A sealing plug 8 is clamped in the oil injection hole 72, and a plurality of oil seepage holes 73 are opened on the sealing gasket 7. Lubricating oil is injected into the sealing gasket 7 through the oil injection hole 72, and the lubricating oil is evenly distributed on the surface of the sealing gasket 7 through the oil seepage holes 73, thereby reducing the friction between the sealing plate 3 and the sealing gasket 7 and extending the service life of the equipment.

[0042] Refer to Figure 2 and Figure 3 A control member 9 for adjusting the vertical movement of the sealing plate 3 is connected to the sealing plate 3. On one side wall of the lead screw nut 43, a vertically arranged guiding groove 431 is opened. The control member 9 includes a threaded rod 91 and a connecting member 92. The connecting member 92 is fixedly connected to the upper surface of the sealing plate 3. The threaded rod 91 is rotatably connected in the guiding groove 431 and the threaded rod 91 vertically penetrates through the connecting member 92. The threaded rod 91 is threadedly connected to the connecting member 92. The upper end of the threaded rod 91 penetrates through the lead screw nut 43 and is fixedly connected with a cap.

[0043] By rotating the threaded rod 91 forward and backward, the vertical position of the sealing plate 3 can be adjusted, so as to adjust the pressure of the sealing plate 3 against the sealing gasket 7 and ensure the sealing performance between the sealing plate 3 and the sealing gasket 7.

[0044] By filling the sponge layer 71 inside the sealing gasket 7 and combining with the lubricating oil system, the sealing performance between the sealing plate 3 and the sealing gasket 7 is significantly improved. At the same time, the friction between the two is reduced, and wear and energy loss are reduced. This design not only extends the service life of the equipment, but also further improves the overall performance and stability of the equipment.

[0045] The implementation principle of an embodiment of a high-pressure roller mill in this application is as follows: The position of the sealing plate 3 is automatically adjusted through the driving mechanism 4, so as to adjust the position of the feed inlet 31, so that the feed inlet 31 reciprocates along the length direction of the roller shaft 21 to complete uniform feeding; The position of the limiting plate 5 is dynamically adjusted through the adjusting mechanism 6 to achieve precise control of the width of the feed inlet 31, thereby improving the feeding uniformity. In addition, the sliding connection between the sealing plate 3 and the machine body 1 and the design of the sealing gasket 7 effectively enhance the overall sealing performance of the equipment, reduce the occurrence of dust overflow and material leakage, and significantly improve the stability and reliability of the equipment.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A high pressure roller mill, comprising a machine body (1), wherein a crushing mechanism (2) is installed inside the machine body (1), wherein the crushing mechanism (2) comprises two roller shafts (21) rotatably connected inside the machine body (1), and a through opening (11) having the same length as the roller shafts (21) is opened at the upper end of the machine body (1), characterized in that: The through port (11) is slidably connected to a sealing plate (3), a feed port (31) is provided on the sealing plate (3), a driving mechanism (4) is connected to the machine body (1) for driving the sealing plate (3) to reciprocate along the length direction of the roller shaft (21), and the feed port (31) is communicated with the through port (11).

2. A high pressure roller grinding machine according to claim 1, characterized in that: The driving mechanism (4) comprises two fixed blocks (41) fixedly connected to the upper surface of the machine body (1); a driving screw (42) is rotatably connected between the two fixed blocks (41); a nut (43) is fixedly connected to a side wall of the sealing plate (3); the driving screw (42) is threadedly connected to the nut (43); and a driving motor (44) for adjusting the forward and reverse rotation of the driving screw (42) is fixedly connected to the machine body (1).

3. A high pressure roller grinding machine according to claim 2, characterized in that: Two limiting plates (5) are slidably connected to the feed port (31); the upper ends of the two limiting plates (5) are bent in a direction away from each other to form a baffle (51); the bottom surface of each baffle (51) contacts the upper surface of the sealing plate (3); and the sealing plate (3) is connected to an adjustment mechanism (6) for driving the two limiting plates (5) to move in a direction toward or away from each other.

4. A high pressure roller grinding machine according to claim 3, characterized in that: The sealing plate (3) is a hollow structure. The adjustment mechanism (6) comprises an adjustment screw (61) fixedly connected to a side face of the two limiting plates (5) which are opposite to each other. The two side walls of the feed port (31) begin to have a communication port (32) connected to the inside of the sealing plate (3). One end of each adjustment screw (61) passes through the communication port (32) and extends into the inside of the sealing plate (3). The inside of the sealing plate (3) is rotatably connected to two gears 1 (62). Each adjustment screw (61) is threadedly connected to one of the gears 1 (62). The two adjustment screws (61) rotate in opposite directions. The inner side wall of the sealing plate (3) is rotatably connected to a rotating shaft (63). Each end of the rotating shaft (63) is coaxially fixed with a gear 2 (64). Each gear 2 (64) meshes with a corresponding gear 1 (62). The inside of the sealing plate (3) is fixedly connected to an adjustment motor (66) for driving the rotating shaft (63) to rotate forward and reverse.

5. A high pressure roller grinding machine according to claim 3, characterized in that: The lower end of each limiting plate (5) is lower than the bottom surface of the sealing plate (3), and the side surfaces of the two limiting plates (5) that are away from each other are fixedly connected to a contact sensor (67), and each contact sensor (67) is electrically connected to a controller, and the controller is electrically connected to the drive motor (44).

6. A high pressure roller grinding machine according to claim 1, characterized in that: The upper surface of the machine body (1) is provided with a mounting groove (12), the sealing plate (3) is slidably connected to the mounting groove (12), the bottom surface of the mounting groove (12) is fixedly connected with a sealing gasket (7), the through opening (11) is provided on the bottom surface of the mounting groove (12) and passes through the sealing gasket (7), the bottom surface of the sealing plate (3) contacts the sealing gasket (7), and the sealing plate (3) is connected with a control member (9) for adjusting the vertical movement of the sealing plate (3).

7. A high pressure roller grinding mill according to claim 6, characterized in that: A vertically arranged guide groove (431) is formed on one side of the nut (43); a connecting piece (92) slidably connected to the guide groove (431) is fixedly connected to the upper surface of the sealing plate (3); the control piece (9) comprises a threaded rod (91) rotatably connected in the guide groove (431) and threadedly connected to the connecting piece (92); one end of the threaded rod (91) passes through the nut (43).

8. A high pressure roller grinding mill according to claim 7, characterized in that: The sealing gasket (7) is a hollow structure, the sealing gasket (7) is filled with a sponge layer (71), a side wall of the sealing gasket (7) is provided with an oil filling hole (72), a sealing plug (8) is clamped in the oil filling hole (72), and a plurality of oil seepage holes (73) are provided on the sealing gasket (7).

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