Protection device for grinding roller and grinding tile of vertical mill
By combining mechanical and electrical limit mechanisms with a disc spring buffer, the problem of direct contact grinding between the grinding wheel and the grinding tile is solved, thus protecting the grinding roller and ensuring stable equipment operation.
Patent Information
- Application Number
- CN202422589289.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-25
AI Technical Summary
When a vertical mill is in operation, the grinding wheel and grinding pad may come into direct contact and grind when the material layer is thin, which will shorten the life of the grinding wheel and grinding pad.
The system employs both mechanical and electrical limit mechanisms, combined with a butterfly spring buffer, to prevent direct contact between the grinding wheel and the grinding pad. Through dual protection of mechanical and electrical controls, and with the butterfly spring providing a buffering effect, it avoids rigid collisions and vibrations.
It effectively protects the grinding rollers and grinding tiles, avoids direct grinding, extends the life of the grinding rollers, and reduces the impact of equipment vibration and rigid collisions.
Smart Images
Figure CN223517632U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a vertical mill technical field, concretely relates to a vertical mill grinding roller grinding shoe protection device. BACKGROUND
[0002] When the vertical mill works, a layer of material layer is formed between the grinding wheel and the grinding shoe, then a certain tension is generated to the rocker arm through the hydraulic cylinder, so that the grinding roller is pressed down, and the grinding shoe is driven by the speed reducer to produce relative movement with the grinding wheel, and the material layer is crushed and broken, and the required powder is produced. In this process, when the material layer is thin, the grinding wheel may directly contact the grinding shoe for grinding, which shortens the service life of the grinding wheel and the grinding shoe. SUMMARY
[0003] The utility model aims at overcoming the prior art's insufficient, provides a vertical mill grinding roller grinding shoe protection device, and plays the role of protecting the grinding roller grinding shoe.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] A vertical mill grinding roller grinding shoe protection device, the vertical mill includes a base, a grinding roller main body, a rocker arm and a grinding shoe, a bearing seat is fixed on the top of the base, the bearing seat is rotatably connected with the middle part of the rocker arm through the bearing thereon, the upper end of the rocker arm is connected with the grinding roller main body, and the lower end of the rocker arm is connected with a hydraulic cylinder for driving the rocker arm to swing; the output end of the grinding roller main body is connected with a grinding wheel, and the lower side of the grinding wheel is fixed with the grinding shoe on the base; the protection device comprises a mechanical limiting mechanism, the mechanical limiting mechanism comprises a connecting rod, a limiter base, a base top plate, a sliding rod, a spring mounting shell and a buffer spring; the connecting rod is fixedly connected at the lower end of the rocker arm; the limiter base is fixed on the lower side of the rocker arm, the spring mounting shell is fixed on the upper end of the limiter base, the sliding rod is slidably connected to the spring mounting shell, and one end of the sliding rod extends out of the spring mounting shell and is directed to the connecting rod; the upper end of the sliding rod in the spring mounting shell is provided with a shoulder, the buffer spring is in a compressed state and is sleeved on the sliding rod, and the two ends of the buffer spring are limited in the shoulder and the bottom plate of the spring mounting shell respectively; the limiting top plate is fixed on the bottom of the spring mounting shell, and the bottom plate of the spring mounting shell is provided with a gap hole for the sliding rod to pass through.
[0006] Further, the protection device further comprises an electric control limiting mechanism, which comprises a limiting plate and a proximity switch, the limiting plate is fixed on the rod body of the hydraulic cylinder, and the proximity switch is fixed on the support plate at the front end of the hydraulic cylinder body, when the connecting rod touches the sliding rod and drives the sliding rod to contact the top of the base, the proximity switch detects the limiting plate, and the hydraulic cylinder starts to release pressure.
[0007] Further, the buffer spring is a butterfly spring.
[0008] The utility model discloses adopt above technical scheme, can effectively guarantee that the grinding wheel and the grinding shoe do not directly contact and carry out the grinding under the protection of the protection device, play the role of protecting the grinding roller grinding shoe, in addition, the butterfly spring is installed in the mechanical limiting mechanism, and it can produce great force in very small deformation process, can effectively play the buffering effect to the grinding roller, effectively avoided the rigid collision of the whole equipment operation, and greatly reduced the vibration influence of equipment. BRIEF DESCRIPTION OF DRAWINGS
[0009] The utility model makes further detailed explanation in combination with the drawings and specific embodiment:
[0010] Fig. 1 It is the whole schematic diagram of the utility model;
[0011] Fig. 2 It is the schematic diagram of mechanical limiting mechanism;
[0012] Fig. 3 It is the schematic diagram of electric control limiting mechanism. SPECIFIC EMBODIMENT
[0013] As Figs. 1-3 The utility model discloses a vertical mill grinding roller grinding shoe protection device, and the vertical mill includes base 4, grinding roller main body 1, swing arm 3 and grinding shoe 7, the top of the base is fixed with bearing seat 2, bearing seat 2 is rotationally connected with the middle part of swing arm 3 through the bearing on it, and the upper end of swing arm 3 is connected with grinding roller main body 1, and the lower end of swing arm 3 is connected with hydraulic cylinder 5 for driving it to swing, and the output end of grinding roller main body 1 is connected with grinding wheel 6, and the lower side of grinding wheel 6 is fixed with grinding shoe 7 located on base 4.
[0014] The protection device of the utility model adopts double protection, and specifically includes mechanical limiting mechanism and electric control limiting mechanism. The mechanical limiting mechanism includes connecting rod 8, limiter base 13, base top plate 12, sliding rod 9, spring mounting shell 11 and buffer spring 10, connecting rod 8 is fixedly connected at the lower end of swing arm 3, limiter base 13 is fixed at the lower side of swing arm 3, spring mounting shell 11 is fixed at the upper end of limiter base 13, sliding rod 9 is slidingly connected on spring mounting shell 11, and one end of sliding rod 9 extends out of spring mounting shell 11 and is towards connecting rod 8, the upper end of sliding rod 9 inside spring mounting shell 11 is provided with a shoulder, buffer spring 10 is in compression state and is sleeved on sliding rod 9, and the two ends of buffer spring 10 are respectively limited to the shoulder and the bottom plate of spring mounting shell 11, the limiting top plate is fixed at the bottom of spring mounting shell 11, and the bottom plate of spring mounting shell 11 is provided with a gap hole for sliding rod 9 to pass through.
[0015] The electric control limiting mechanism includes limiting plate 14 and proximity switch 15, limiting plate 14 is fixed on the rod body of hydraulic cylinder 5, and proximity switch 15 is fixed on the support plate at the front end of the cylinder body of hydraulic cylinder 5.
[0016] The working principle of the utility model is: during the working process of the vertical mill, the rocker arm 3 swings down, the connecting rod 8 at the lower end of the rocker arm 3 touches the sliding rod 9, and drives the sliding rod 9 to be in zero distance contact with the base top plate 12, at this time, there is still a gap between the grinding wheel 6 and the grinding shoe 7, and the sliding rod 9 cannot continue to move, which means that the grinding wheel 6 cannot continue to press down; during the swinging down process of the rocker arm 3, the limiting plate 14 moves along with the rod body of the hydraulic cylinder 5 to the direction of the proximity switch 15, when the sliding rod 9 cannot move, after the proximity switch 15 on the hydraulic cylinder 5 detects the limiting plate 14, the system triggers the pressure relief program, and the hydraulic cylinder 5 starts to relieve pressure, so under the double protection, it can effectively ensure that the grinding wheel 6 and the grinding shoe 7 will not directly contact and grind, and plays a role in protecting the grinding shoe 7 of the grinding roller. In addition, the buffer spring 10 in the spring mounting shell 11 is a butterfly spring, which can generate a large force in a small deformation process, and can effectively buffer the grinding roller, effectively avoiding the rigid collision generated during the operation of the whole equipment, and greatly reducing the vibration influence of the equipment.
[0017] The above describes the specific embodiment of the utility model, but those skilled in the art should understand that this is only an example, and those skilled in the art can make various changes or modifications to this embodiment without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.
Claims
1. A vertical mill roller mill shoe protection device, the vertical mill comprising a base, a roller body, a rocker arm and a mill shoe, the top of the base is fixed with a bearing seat, the bearing seat is rotatably connected with the middle part of the rocker arm through the bearing thereon, the upper end of the rocker arm is connected with the roller body, and the lower end of the rocker arm is connected with a hydraulic cylinder for driving the swing thereof; the output end of the roller body is connected with a grinding wheel, and the lower part of the grinding wheel is fixed with the mill shoe located on the base; characterized in that: The protection device comprises a mechanical limiting mechanism, which comprises a connecting rod, a limiter base, a base top plate, a sliding rod, a spring mounting shell and a buffer spring; the connecting rod is fixedly connected to the lower end of the rocker arm; the limiter base is fixed to the lower side of the rocker arm, and the spring mounting shell is fixed to the upper end of the limiter base; the sliding rod is slidingly connected to the spring mounting shell, and one end of the sliding rod extends out of the spring mounting shell and faces the connecting rod; the upper end of the sliding rod inside the spring mounting shell is provided with a shoulder, the buffer spring is in a compressed state and is sleeved on the sliding rod, and the two ends of the buffer spring are respectively limited to the shoulder and the bottom plate of the spring mounting shell; the base top plate is fixed to the bottom of the spring mounting shell, and the bottom plate of the spring mounting shell is provided with a gap hole through which the sliding rod passes.
2. A protection device for the grinding shoe of a roller mill according to claim 1, characterized in that: The protection device further comprises an electric control limiting mechanism, which comprises a limiting plate and a proximity switch; the limiting plate is fixed to the rod body of the hydraulic cylinder, and the proximity switch is fixed to the support plate at the front end of the cylinder body of the hydraulic cylinder; when the connecting rod touches the sliding rod and drives the sliding rod to contact the top of the base, the proximity switch detects the limiting plate, and the hydraulic cylinder starts to release pressure.
3. A protection device for the grinding shoe of a roller mill according to claim 1, characterized in that: The buffer spring is a butterfly spring.