Stable roller mill

Abstract

The application relates to a stable ring-roller grinding mill, which comprises a casing, a wind guide cylinder and a mounting cylinder fixedly sleeved in the casing, and a grinding ring fixed to the inner side of the mounting cylinder; a grinding material mechanism, a plurality of grinding material grooves are concavely arranged on the inner side of the grinding ring, the grinding material mechanism comprises a rotating disc driven by a corresponding driving mechanism, a plurality of grinding rollers matched with the grinding material grooves of the grinding ring are rotatably mounted on the periphery of the rotating disc; a buffer type material distribution mechanism, which comprises a feeding channel, a mounting piece is movably installed at the discharge port of the feeding channel and below the discharge port, a material distribution disc is rotatably installed at the bottom side of the mounting piece, and buffer rubber matched with the output shaft end of the driving mechanism is fixedly connected to the downward material distribution disc; and a classifier, which comprises a cylindrical filter grid rotatably arranged at the feeding end of a discharge pipe. The application can realize dispersed feeding and timely strengthen the support of the grinding material mechanism when the equipment has large vibration.

Description

Technical Field

[0001] This invention relates to the field of material crushing and processing equipment technology, specifically to a stable ring roller mill that can significantly improve the operational stability of the equipment. Background Technology

[0002] The existing ring roller mill mainly consists of a casing, an abrasive mechanism located on the bottom side of the casing, and a classifier located on the top of the casing. The abrasive mechanism performs step-by-step crushing of the fed material, and then the crushed material is discharged to an external powder collection device by gas extraction. Under the rotation and sorting action of the classifier, the material that is not properly crushed falls back to the abrasive mechanism for further crushing.

[0003] During operation, the ring roller mill's grinding mechanism relies primarily on a single drive shaft for rotational support, resulting in relatively weak rotational stability. When continuous uneven stress or excessive vibration occurs during the grinding process, the overall assembly accuracy of the grinding mechanism is affected. Existing ring roller mills primarily use a feed pipe with a feed hopper for material guidance and transmission. During feeding, material continuously falls from a fixed point, causing the grinding mechanism to experience uneven stress. When there is a significant difference in material particle size, the grinding process will generate noticeable vibration. Both of these situations can impair the overall assembly accuracy of the ring roller mill's grinding mechanism.

[0004] Therefore, the research objective of this invention is to design a stable ring roller mill that can achieve dispersed feeding, thereby reducing the fixed-point impact force of the feed on the abrasive mechanism, and can effectively strengthen the support of the abrasive mechanism in a timely manner when the equipment experiences large vibrations, thereby effectively maintaining the operational stability of the abrasive mechanism for a long time. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a stable ring roller mill, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is:

[0007] A stable ring roller mill, comprising:

[0008] The casing has a fixed ring plate and a support plate fixedly connected horizontally on the bottom side according to height. The support plate is provided with at least one corresponding ventilation hole. The upper part of the fixed ring plate is fitted with an air guide tube and an installation tube fixedly on the casing according to height. The air guide tube and the installation tube are spaced apart from the inner side wall of the casing. A corresponding grinding ring is fixedly connected to the inner side of the installation tube.

[0009] The abrasive mechanism has several corresponding abrasive grooves arranged in a concave-convex manner on the inner side of the grinding ring. The abrasive mechanism includes a turntable driven by a corresponding drive mechanism. Multiple grinding rollers adapted to the abrasive grooves of the grinding ring are rotatably mounted in a circular array around the turntable.

[0010] A buffered material distribution mechanism includes a feeding channel inclinedly mounted on the upper side of the housing. The discharge end of the feeding channel is inclined downward and extends through to the inner side of the air guide duct. The discharge port of the feeding channel is directly opposite the center of the turntable. A corresponding mounting component is movably mounted below the discharge port of the feeding channel via a corresponding buffer spring. A corresponding material distribution disc is rotatably mounted on the bottom side of the mounting component. A buffer rubber, adapted to the output shaft end of the drive mechanism, is fixed downward at the center of the bottom end of the material distribution disc. Material is discharged through the discharge port of the feeding channel to the upper side of the material distribution disc. After being weighed down, the material distribution disc moves downward until the buffer rubber abuts against the output shaft end of the drive mechanism. The drive mechanism drives the material distribution disc to rotate to evenly throw out the material. After the material is thrown out, the material distribution disc returns to its original position under the elastic force of the buffer spring.

[0011] A classifier, wherein the upper part of the casing is connected to a corresponding discharge pipe, and the classifier includes a cylindrical filter screen rotatably disposed at the inlet end of the discharge pipe, the cylindrical filter screen being driven by a corresponding classifying motor.

[0012] The upper surface of the fabric tray is sloping with a higher center and a lower perimeter, and the bottom surface of the cushioning rubber is provided with anti-slip texture to increase friction.

[0013] A corresponding conduit is fixedly connected to the outlet of the feed channel. The upper end of the buffer spring is fixedly connected to the conduit. The mounting component is movably inserted into the conduit and fixedly connected to the bottom end of the buffer spring.

[0014] The driving mechanism includes a drive shaft rotatably mounted at the center of the support plate, the drive shaft being driven by a drive motor mounted on the bottom side of the support plate, and the center of the turntable being fixed to the drive shaft.

[0015] The turntable is provided with an upper end cover plate and a lower end cover plate respectively, which are connected to the drive shaft. The lower end cover plate has a convex top surface that abuts against the receiving groove on the turntable. The periphery of the lower end cover plate is spaced apart from the turntable to guide the crushed material to the gap between the mounting cylinder and the machine housing.

[0016] The bottom side of the receiving tank is covered and fixedly connected with a corresponding partition, and the space formed by the partition and the receiving tank is filled with a number of corresponding damping particles for vibration reduction.

[0017] With the center of the lower end cover plate as the base point, the partition plate is arranged in a circular array with multiple corresponding arc-shaped guide holes. Each arc-shaped guide hole is fixed with a corresponding rubber pad. The middle part of each rubber pad is provided with a through hole that matches the arc-shaped guide hole. Iron abutment balls with their bottom ends extending to the bottom side of the arc-shaped guide hole are rolled on the rubber pads. The upper part of the iron abutment balls abuts against the damping particles for vibration reduction. Several electromagnets corresponding to the positions of the iron abutment balls are evenly distributed on the support plate. When the electromagnets are energized, the iron abutment balls are attracted downwards and connected to the electromagnets, and the rubber pads are compressed.

[0018] A corresponding vibration sensor is installed on the support plate. When the vibration detected by the vibration sensor exceeds the set value, the electromagnet is energized. When the vibration detected by the vibration sensor is lower than the set value, the electromagnet is de-energized.

[0019] The bottom of the casing has several corresponding ventilation holes evenly distributed.

[0020] The grinding rollers are rotatably mounted onto the turntable via corresponding mounting shafts.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0022] 1) This invention adds a buffered material distribution mechanism, which includes a feeding channel and a mounting component that can be lifted and lowered below the outlet of the feeding channel via a buffer spring. A material distribution disc is rotatably mounted on the bottom side of the mounting component, and a buffer rubber that matches the output shaft end of the drive mechanism is fixedly connected downward at the center of the bottom end of the material distribution disc. When the material is discharged from the outlet of the feeding channel to the upper side of the material distribution disc, the material distribution disc moves downward under the weight until the buffer rubber abuts against the output shaft end of the drive mechanism. At this time, the drive mechanism drives the material distribution disc to rotate to evenly throw out the material, thereby effectively achieving dispersed feeding, reducing the fixed-point impact force of the feeding on the abrasive mechanism, and thus effectively maintaining the operational stability of the abrasive mechanism.

[0023] 2) After the material is ejected, the feeding disc returns to its original position under the elastic force of the buffer spring. This effectively accommodates batches of material entering the grinding mechanism, ensuring that the material falling (impacting) the feeding disc does not affect the grinding mechanism. After the material falls into the feeding disc, the buffer rubber then abuts against the output shaft of the drive mechanism. This further reduces the impact of feeding on the grinding mechanism, thus effectively maintaining the operational stability of the grinding mechanism.

[0024] 3) The upper surface of the material feeding tray of the present invention is sloping with a high center and a low periphery to facilitate the smooth receiving and throwing of materials. The bottom surface of the buffer rubber of the present invention is provided with anti-slip texture to increase friction, so as to ensure that the buffer rubber can form a relatively stable connection with the output shaft end of the drive mechanism after it comes into contact with the material. The material feeding channel of the present invention is fixedly connected to the discharge port with a guide tube. The upper end of the buffer spring is fixedly connected to the guide tube. The mounting part is movably inserted into the guide tube and fixed to the bottom end of the buffer spring to form a directional and stable installation of the mounting part, thereby effectively ensuring the assembly and rotation stability of the material feeding tray and ensuring the overall practical effect of the present invention.

[0025] 4) The turntable of the present invention is provided with an upper end cover plate and a lower end cover plate on its upper and lower sides, respectively. The lower end cover plate has a convex upper part in the middle, with its top surface abutting against the receiving groove on the turntable. The periphery of the lower end cover plate is spaced apart from the turntable. Then, a partition plate is covered and fixedly attached to the bottom side of the receiving groove. In this way, a number of corresponding damping particles for vibration reduction can be fixedly filled in the space formed by the partition plate and the receiving groove. This allows the vibration generated by the abrasive mechanism during operation to be transmitted to the area where the damping particles are located in a timely manner. Under the frictional energy dissipation of the damping particles, a sufficient vibration reduction effect is formed, thereby effectively assisting in improving the operational stability of the abrasive mechanism while ensuring smooth material discharge guidance.

[0026] 5) This invention uses the center of the lower end cover plate as a base point, and arranges multiple corresponding arc-shaped guide holes in a circular array on the partition plate. Rubber pads are fixed to each arc-shaped guide hole, and iron abutment balls with bottom ends extending to the bottom side of the arc-shaped guide hole are rolled on each rubber pad. Then, several electromagnets corresponding to the positions of the iron abutment balls are evenly distributed on the support plate. When the particle size of the material varies greatly, causing significant vibration in the abrasive mechanism, the electromagnets can be energized to attract the iron abutment balls downwards to the electromagnets. This not only disperses some of the vibration outwards but also provides uniform and distributed traction support to the lower end cover plate, i.e., the abrasive mechanism. This effectively strengthens the support for the abrasive mechanism when significant vibration occurs, further maintaining the operational stability of the abrasive mechanism.

[0027] 6) When the vibration detected by the vibration sensor is lower than the set value, the electromagnet is de-energized and the rubber pad recovers its deformation to drive the iron abutment ball to reset, so as to disconnect the iron abutment ball from the electromagnet in time when the vibration is low, thereby reducing wear and ensuring the practical effect of the present invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention.

[0029] Figure 2 This is a cross-sectional view of the present invention.

[0030] Figure 3 This is a schematic diagram of the cushioning fabric mechanism of the present invention.

[0031] Figure 4 This is a schematic diagram of the abrasive mechanism of the present invention.

[0032] Figure 5 This is a partial cross-sectional view of the lower end cover plate of the present invention.

[0033] In the attached diagram: 1. Housing; 101. Ventilation hole; 2. Fixing ring plate; 3. Support plate; 301. Ventilation guide hole; 4. Air guide tube; 5. Mounting tube; 6. Grinding ring; 7. Grinding mechanism; 701. Drive mechanism; 7011. Drive shaft; 7012. Drive motor; 7012. Turntable; 702. Grinding roller; 8. Buffered material feeding mechanism; 801. Feeding channel; 802. Buffer spring; 803. Mounting component; 804. Material feeding disc; 805. Buffer rubber; 9. Classifier; 901. Cylindrical filter grid; 902. Classifying motor; 10. Discharge pipe; 11. Guide tube; 12. Upper end cover plate; 13. Lower end cover plate; 14. Partition plate; 1401. Arc-shaped guide hole; 15. Damping particles for vibration reduction; 16. Rubber pad; 17. Iron abutment ball; 18. Electromagnet; 19. Vibration sensor; 20. Mounting shaft. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] refer to Figure 1-5 A stable ring roller mill, comprising:

[0036] The casing 1 has a fixed ring plate 2 and a support plate 3 horizontally fixed to its bottom side according to height. The support plate 3 is provided with at least one corresponding ventilation hole 301. The upper side of the fixed ring plate 2 is fitted with an air guide tube 4 and an installation tube 5 according to height inside the casing 1. The air guide tube 4 and the installation tube 5 are spaced apart from the inner side wall of the casing 1. A corresponding grinding ring 6 is fixed to the inner side of the installation tube 5.

[0037] The abrasive mechanism 7 has several corresponding abrasive grooves arranged in a concave-convex manner on the inner side of the grinding ring 6. The abrasive mechanism 7 includes a turntable 702 driven by a corresponding driving mechanism 701. The outer periphery of the turntable 702 is rotatably mounted in a ring array with multiple grinding rollers 703 adapted to the abrasive grooves of the grinding ring 6.

[0038] The buffer-type fabric feeding mechanism 8 includes a feeding channel 801 inclinedly installed on the upper side of the housing 1. The discharge end of the feeding channel 801 is inclined downward and extends through to the inner side of the air guide duct 4. The discharge port of the feeding channel 801 is directly opposite the center of the turntable 702. A corresponding mounting component 803 is movably mounted below the discharge port of the feeding channel 801 via a corresponding buffer spring 802. A corresponding fabric feeding disc 804 is rotatably mounted on the bottom side of the mounting component 803. The fabric... A buffer rubber 805, which is adapted to the output shaft end of the drive mechanism 701, is fixedly connected downward at the center of the bottom end of the disc 804. The material is discharged from the outlet of the feed channel 801 to the upper side of the feeding disc 804. After the feeding disc 804 is subjected to the weight, it moves downward until the buffer rubber 805 abuts against the output shaft end of the drive mechanism 701. The drive mechanism 701 drives the feeding disc 804 to rotate so as to throw the material out evenly. After the material is thrown out, the feeding disc is reset under the elastic force of the buffer spring 802.

[0039] The classifier 9 has a corresponding discharge pipe 10 connected to the upper part of the housing 1. The classifier 9 includes a cylindrical filter grid 901 rotatably disposed at the feed end of the discharge pipe 10. The cylindrical filter grid 901 is driven by a corresponding classifier motor 902.

[0040] This invention adds a buffered material distribution mechanism 8, which includes a feeding channel 801 and a mounting component 803 that is vertically and flexibly mounted below the outlet of the feeding channel 801 via a buffer spring 802. A material distribution disc 804 is rotatably mounted on the bottom side of the mounting component 803. A buffer rubber 805, which is adapted to the output shaft end of the drive mechanism 701, is fixedly connected downward at the center of the bottom end of the material distribution disc 804. When the material is discharged from the outlet of the feeding channel 801 to the upper side of the material distribution disc 804, the material distribution disc 804 descends under the weight until the buffer rubber 805 abuts against the output shaft end of the drive mechanism 701. At this time, the drive mechanism 701 drives the material distribution disc 804 to rotate to evenly throw out the material, thereby effectively achieving dispersed feeding, reducing the fixed-point impact force of the feeding on the abrasive mechanism 7, and thus effectively maintaining the operational stability of the abrasive mechanism 7.

[0041] After the material is ejected, the feeding disc 804 returns to its original position under the elastic force of the buffer spring 802. This effectively accommodates batches of material entering the grinding mechanism, ensuring that the material falling into and impacting the feeding disc 804 does not affect the grinding mechanism 7. After the material falls into the feeding disc 804, the buffer rubber 805 then abuts against the output shaft end of the drive mechanism 701. This further reduces the impact of feeding on the grinding mechanism 7, thus effectively maintaining the operational stability of the grinding mechanism 7.

[0042] The upper surface of the fabric tray 804 is sloping with a high center and a low periphery to facilitate the smooth receiving and throwing of materials. The bottom surface of the cushioning rubber 805 is provided with anti-slip texture to increase friction, so as to ensure that the cushioning rubber 805 can form a relatively stable connection with the output shaft end of the drive mechanism 701 after it comes into contact with the material.

[0043] A corresponding guide tube 11 is fixedly connected to the outlet of the feed channel 801. The upper end of the buffer spring 802 is fixedly connected to the guide tube 11. The mounting part 803 is movably inserted into the guide tube 11 and fixedly connected to the bottom end of the buffer spring 802 to form a directional and stable installation of the mounting part 803, thereby effectively ensuring the assembly and rotation stability of the fabric tray 804 and ensuring the overall practical effect of the present invention.

[0044] The drive mechanism 701 includes a drive shaft 7011 rotatably mounted at the center of the support plate 3. The drive shaft 7011 is driven by a drive motor 7012 mounted on the bottom side of the support plate 3. The center of the turntable 702 is fixed to the drive shaft 7011.

[0045] The turntable 702 has an upper cover plate 12 and a lower cover plate 13 on its upper and lower sides, respectively, which are drively connected to the drive shaft 7011. The lower cover plate 13 has a convex upper part in the middle, with its top surface abutting against a receiving groove on the turntable 702. The periphery of the lower cover plate 13 is spaced apart from the turntable 702 to guide the crushed material to the gap between the mounting cylinder 5 and the housing 1. The bottom side of the receiving groove is covered and fixedly connected with a corresponding partition plate 14. The space formed by the partition plate 14 and the receiving groove is filled with a number of corresponding damping particles 15 for vibration reduction.

[0046] The turntable 702 of the present invention is provided with an upper cover plate 12 and a lower cover plate 13 on its upper and lower sides, respectively. The lower cover plate 13 has a convex upper part in the middle, with its top surface abutting against the receiving groove on the turntable 702. The periphery of the lower cover plate 13 is spaced apart from the turntable, and then a partition plate 14 is fixedly attached to the bottom side of the receiving groove. In this way, a number of corresponding damping particles 15 can be fixedly filled in the space formed by the partition plate 14 and the receiving groove, so that the vibration generated by the abrasive mechanism 7 during operation can be transmitted to the area where the damping particles 15 are located in a timely manner. Under the frictional energy dissipation of the damping particles 15, a sufficient damping effect is formed, thereby effectively assisting in improving the operational stability of the abrasive mechanism 7 while ensuring smooth material discharge guidance.

[0047] With the center of the lower end cover plate 13 as the base point, the partition plate 14 is provided with a plurality of corresponding arc-shaped guide holes 1401 in a circular array. Each arc-shaped guide hole 1401 is fixed with a corresponding rubber pad 16. The middle part of each rubber pad 16 is provided with a through hole adapted to the arc-shaped guide hole 1401. Iron abutment balls 17 extending to the bottom side of the arc-shaped guide hole 1401 are rolled on the rubber pad 16. The upper part of the iron abutment balls 17 abuts against the damping particles 15 for vibration reduction. Several electromagnets 18 are evenly distributed on the support plate 3, corresponding to the positions of the iron abutment balls 17. When the electromagnets 18 are energized, the iron abutment balls 17 are attracted downwards and connected to the electromagnets 18, and the rubber pads 16 are compressed.

[0048] A corresponding vibration sensor 19 is installed on the support plate 3. When the vibration detected by the vibration sensor 19 exceeds the set value, the electromagnet 18 is energized. When the vibration detected by the vibration sensor 19 is lower than the set value, the electromagnet 18 is de-energized.

[0049] Using the center of the lower end cover plate 13 as a base point, the present invention provides a plurality of corresponding arc-shaped guide holes 1401 arranged in a ring array on the partition plate 14. Rubber pads 16 are fixed to the arc-shaped guide holes 1401 respectively, and iron abutment balls 17 with their bottom ends extending to the bottom side of the arc-shaped guide holes 1401 are rolled on the rubber pads 16 respectively. Then, a plurality of electromagnets 18 are evenly distributed on the support plate 3, corresponding to the positions of the iron abutment balls 17. When there is a large difference in the particle size of the material, resulting in a large amount of vibration in the abrasive mechanism 7, the electromagnets 18 can be energized to attract the iron abutment balls 17 downwards to the electromagnets 18. This not only disperses some of the vibration outwards, but also forms a uniform and dispersed traction support for the lower end cover plate 13, i.e., the abrasive mechanism 7. This effectively strengthens the support for the abrasive mechanism 7 when the equipment experiences large vibrations, thereby further effectively maintaining the operational stability of the abrasive mechanism 7. When the vibration detected by the vibration sensor 19 is lower than the set value, the electromagnet 18 is de-energized and the rubber pad 16 recovers its deformation to drive the iron abutment ball 17 to reset, so as to disconnect the iron abutment ball 17 from the electromagnet 18 in time when the vibration is low, thereby reducing wear and ensuring the practical effect of the present invention.

[0050] The bottom of the housing 1 is provided with a number of corresponding ventilation holes 101. The grinding rollers 703 are rotatably mounted on the turntable 702 via corresponding mounting shafts 20.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A stable roller mill, characterized by, Include: The casing (1), the bottom side is fixed with fixed ring plate (2) and support plate (3) in high and low transverse, the support plate (3) is provided with at least one corresponding air permeable guide hole (301), the fixed ring plate (2) upside in the casing (1) is fixed with air duct (4) and installation cylinder (5) in high and low, the air duct (4) and installation cylinder (5) are spaced apart between the inner side wall of the casing (1), the inner side of the installation cylinder (5) is fixed with a corresponding grinding ring (6); Abrasive mechanism (7), the inner side of the grinding ring (6) is provided with a plurality of corresponding abrasive grooves in high and low concave, the abrasive mechanism (7) contains the rotating disc (702) driven by corresponding drive mechanism (701), the outer periphery of the rotating disc (702) is annular array rotatingly installed with a plurality of grinding rollers (703) matched with the abrasive grooves of the grinding ring (6); Buffer type cloth mechanism (8), containing the feed channel (801) obliquely installed on the upper side of the casing (1), the discharge end of the feed channel (801) is obliquely arranged downward and extends through to the inner side of the air duct (4), the discharge port of the feed channel (801) is opposite to the center of the rotating disc (702), a corresponding mounting (803) is installed on the discharge port of the feed channel (801) through a corresponding buffer spring (802) below, the bottom side of the mounting (803) is rotatably installed with a corresponding cloth disc (804), the bottom end center of the cloth disc (804) is fixed with a buffer rubber (805) matched with the output shaft end of the drive mechanism (701) downward, the material is discharged to the upper side of the cloth disc (804) through the discharge port of the feed channel (801), the cloth disc (804) is lowered to the buffer rubber (805) abutting to the output shaft end of the drive mechanism (701) after being heavy, the drive mechanism (701) drives the cloth disc (804) to rotate to uniformly throw out the material, the cloth disc is reset under the action of the elastic force of the buffer spring (802) after the material is completed to throw out; Classifier (9), the upper part of the casing (1) is connected with a corresponding discharge pipe (10), the classifier (9) contains a cylindrical filter grid (901) rotatably arranged at the feed end of the discharge pipe (10), the cylindrical filter grid (901) is driven by a corresponding classification motor (902); The upper and lower sides of the rotating disc (702) are respectively provided with an upper end cover plate (12) and a lower end cover plate (13) drivingly connected to the drive shaft (7011), the middle part of the lower end cover plate (13) is provided with a receiving groove with a top end face abutting to the rotating disc (702) upward, the bottom side of the receiving groove is covered and fixed with a corresponding partition plate (14), the space formed by the partition plate (14) and the receiving groove is fixedly filled with a plurality of damping particles (15) for damping; A plurality of arc-shaped guide holes (1401) are arranged in a ring array on the partition plate (14) with the center of the lower end cover plate (13) as the base point, and a corresponding rubber pad (16) is fixedly connected to each of the arc-shaped guide holes (1401), and a through hole matched with the arc-shaped guide hole (1401) is arranged in the middle of the rubber pad (16), and an iron abutting ball (17) extending to the bottom side of the arc-shaped guide hole (1401) is rotatably arranged on the rubber pad (16), and a plurality of electromagnets (18) corresponding to the positions of the iron abutting balls (17) are uniformly arranged on the support plate (3).

2. A stable ring roller mill as claimed in claim 1, wherein, The upper surface of the cloth disc (804) is arranged in a slope shape with the center being high and the periphery being low, and the bottom surface of the buffer rubber (805) is provided with anti-skid lines for increasing friction.

3. A stable ring roller mill as claimed in claim 1, wherein, A corresponding guide pipe (11) is fixedly connected to the discharge port of the feeding channel (801), the upper end of the buffer spring (802) is fixedly connected in the guide pipe (11), and the mounting piece (803) is movably inserted in the guide pipe (11) and fixed to the bottom end of the buffer spring (802).

4. A stable ring roller mill as claimed in claim 1, wherein, The driving mechanism (701) comprises a driving shaft (7011) rotatably arranged at the center of the support plate (3), the driving shaft (7011) is driven by a driving motor (7012) arranged at the bottom side of the support plate (3), and the middle part of the rotating disc (702) is fixedly connected to the driving shaft (7011).

5. A stable ring roller mill as claimed in claim 4, wherein, The lower end cover plate (13) is arranged in a spaced manner with the rotating disc (702) at the periphery to guide the crushed material to the space between the mounting cylinder (5) and the shell (1).

6. A stable ring roller mill as claimed in claim 1, wherein, The upper part of the iron abutting ball (17) abuts against the damping particles (15), and after the electromagnet (18) is energized, the iron abutting ball (17) is attracted downward to the electromagnet (18), and the rubber pad (16) is compressed.

7. A stable ring roller mill as claimed in claim 6, wherein, A corresponding vibration sensor (19) is arranged on the support plate (3), when the vibration amount detected by the vibration sensor (19) exceeds a set value, the electromagnet (18) is energized, and when the vibration amount detected by the vibration sensor (19) is lower than the set value, the electromagnet (18) is de-energized.

8. A stable ring roller mill as claimed in claim 1, wherein, A plurality of corresponding air permeation holes (101) are uniformly arranged at the bottom end of the shell (1).

9. A stable ring roller mill as claimed in claim 1, wherein, The grinding roller (703) is rotatably arranged on the rotating disc (702) through a corresponding mounting shaft (20).

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