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CN-121977154-A - Vertical mill grinding roller lubricating system

CN121977154ACN 121977154 ACN121977154 ACN 121977154ACN-121977154-A

Abstract

The invention relates to the technical field of grinding equipment vertical mill design, in particular to a vertical mill grinding roller lubrication system, which comprises a grinding roller, an oil tank, an oil cooler, a circulating lubrication unit, an oil quality purification unit and a monitoring control unit, and is characterized in that the circulating lubrication unit is simultaneously communicated with an oil inlet pipeline and an oil return pipeline of the grinding roller through a single power source to form a closed circulation loop; the oil inlet of the oil return pipeline is arranged at a preset oil level lower limit position in the grinding roller so as to keep the quantity of lubricating oil in the grinding roller constant in a working state; the oil tank is communicated with the circulating lubrication unit through an oil supplementing control valve, and the oil supplementing control valve is opened and closed according to a feedback signal of the monitoring control unit so as to realize intelligent oil supplementing.

Inventors

  • LI ZHENG

Assignees

  • 江苏欣羚羊科技有限公司

Dates

Publication Date
20260505
Application Date
20260403

Claims (9)

  1. 1. The utility model provides a vertical mill grinding roller (1) lubricating system which characterized in that, including grinding roller (1), oil tank (7), oil cooler (13), circulation lubrication unit, oily purification unit and monitoring control unit, its characterized in that: The circulating lubrication unit is simultaneously communicated with an oil inlet pipeline (3) and an oil return pipeline (4) of the grinding roller (1) through a single power source (10) to form a closed circulation loop; the oil inlet of the oil return pipeline (4) is arranged at a preset oil level lower limit position in the grinding roller (1) so as to keep the quantity of lubricating oil in the grinding roller (1) constant in a working state; The monitoring control unit comprises an oil quantity monitoring module (14) and a temperature monitoring module (6) and is used for acquiring the loss state of lubricating oil and the working temperature of a bearing in real time; The oil tank (7) is communicated with the circulating lubrication unit through an oil supplementing control valve (8), and the oil supplementing control valve (8) is opened and closed according to a feedback signal of the monitoring control unit so as to realize intelligent oil supplementing.
  2. 2. The lubrication system of the vertical mill grinding roller (1) according to claim 1, wherein the oil inlet of the oil return pipeline (4) is level with or slightly lower than the lower limit of lubricating oil in the grinding roller (1) so as to ensure that the preset oil storage capacity is always maintained in the grinding roller (1) and prevent the circulating lubrication unit from sucking air.
  3. 3. The lubrication system of the vertical mill grinding roller (1) according to claim 2, wherein the oil quantity monitoring module (14) is an electromagnetic flowmeter, the temperature monitoring module (6) is a temperature measuring platinum resistor, and the temperature measuring platinum resistor are respectively arranged at the oil return pipeline (4) and the bearing of the grinding roller (1) to realize multi-parameter collaborative monitoring.
  4. 4. A vertical mill grinding roller (1) lubrication system according to claim 3, characterized in that the oil quality purification unit comprises a multi-stage filter device arranged in series in a circulation loop, wherein a primary filter (9) is arranged on the oil suction side of the circulation lubrication unit and a secondary filter (11) is arranged on the oil outlet side of the circulation lubrication unit.
  5. 5. The lubricating system of the vertical mill grinding roller (1) according to claim 4, wherein the primary filter (9) is a pipeline oil suction filter for protecting a circulating lubricating unit, and the secondary filter (11) is a double-cylinder filter for ensuring that the cleanliness of lubricating oil entering the grinding roller (1) meets the bearing lubricating requirement.
  6. 6. The lubrication system of the vertical mill grinding roller (1) according to claim 5, wherein the single power source (10) is a lubrication pump set, an oil inlet of the lubrication pump set is communicated with the grinding roller (1) through the oil return pipeline (4), and an oil outlet of the lubrication pump set is communicated with the grinding roller (1) through the oil inlet pipeline (3) to form a unidirectional circulation path.
  7. 7. The lubrication system of the vertical mill grinding roller (1) according to claim 6, wherein the oil compensation control valve (8) is an electric ball valve, and when the oil quantity monitoring module (14) detects that the loss quantity of the lubricating oil reaches a preset threshold value, the electric ball valve is opened to compensate the lubricating oil in the oil tank (7) to the circulation loop.
  8. 8. A vertical mill grinding roller (1) lubrication system according to claim 7, characterized in that the oil tank (7) is provided with a ventilation cap (5) and an oil level gauge (2), the ventilation cap (5) is used for balancing the air pressure inside and outside the oil tank (7), and the oil level gauge (2) is used for visually displaying the oil storage amount.
  9. 9. The lubrication system of a vertical mill grinding roller (1) according to claim 8, wherein the monitoring control unit further comprises a pressure monitoring module (12), the pressure monitoring module (12) being arranged on the oil outlet side of the circulating lubrication unit for detecting the system oil supply pressure.

Description

Vertical mill grinding roller lubricating system Technical Field The invention relates to the technical field of vertical mill design of grinding equipment, in particular to a vertical mill grinding roller lubricating system. Background The vertical roller mill integrates fine crushing, drying, grinding, powder selecting and conveying, and has the characteristics of small occupied area, simple process flow, high grinding efficiency, low energy consumption, small noise, large drying capacity, easy adjustment of product fineness, no dust pollution, convenient maintenance, reliable operation and the like. Especially in the large-scale grinding process, the requirements of customers are completely met, and the main technical and economic indexes reach the international advanced level. The grinding machine is widely used for large-scale material grinding and superfine grinding processing in industries such as metallurgy, electric power, cement, chemical industry, ceramics, nonmetallic ores, power plant desulfurization, water slag, coal, cement clinker, glass, quartz, limestone and the like. The process characteristics are especially suitable for large-scale grinding preparation places. Because it can use a large amount of waste heat and exhaust gas. The process of crushing, grinding, drying, selecting powder and pneumatic conveying in materials can be efficiently and comprehensively completed. Integrates multiple functions. Because it uses the material bed principle to grind. Avoiding the collision and abrasion between metals. The metal abrasion loss is small, the noise is low, and the internal powder selecting function is provided for the wind-sweeping type grinding, so that the phenomenon of over-grinding is avoided, and the consumption of idle work is reduced. The grinding efficiency is high. Compared with a ball milling system. The grinding electricity consumption is only 50% -60% of the latter. The method has the advantages of simple process flow, large single machine yield, large feeding granularity, strong drying capacity, good sealing performance, no dust in negative pressure operation, quick quality control of finished products, flexible product replacement, easy realization of intelligent and automatic control and the like. Therefore, the method is widely applied to various countries in the world. Has become the first choice equipment of the grinding technology internationally at present. The running rate of the whole grinding system is determined by the advantages and disadvantages of the grinding roller lubrication system, the existing grinding roller lubrication is that a supply pump injects clean and cooled lubricating oil into the grinding roller, meanwhile, an oil pump pumps out high-temperature lubricating oil from the grinding roller, in order to ensure that enough lubricating oil is always available in the grinding roller and cannot emerge from positions such as a ventilation cap of the grinding roller, the discharge capacity of the oil pump is higher than that of the oil injection pump, a large amount of air enters the pump, the service life of the pump is far lower than that of the design, when the actual discharge capacity of the oil pump is lower than that of the oil supply pump after the oil pump is worn, the lubricating oil in the grinding roller can emerge from the ventilation cap, environmental pollution and waste of the lubricating oil are caused, and meanwhile, shutdown maintenance is needed, so that the running of the system is influenced. Accordingly, the present invention provides a vertical mill grinding roller lubrication system to solve the above-mentioned problems. Disclosure of Invention The invention aims to solve the technical problems that the existing grinding roller is lubricated by injecting clean and cooled lubricating oil into the grinding roller through an oil supply pump, and meanwhile, high-temperature lubricating oil is pumped out from the grinding roller through an oil pump, so that enough lubricating oil is always reserved in the grinding roller and cannot be discharged from positions such as a ventilation cap of the grinding roller, the discharge capacity of the oil pump is higher than that of an oil injection pump, a large amount of air enters the pump through the oil pump, the service life of the pump is far lower than the design service life, when the actual discharge capacity of the oil pump is lower than that of the oil supply pump after the oil pump is worn, the lubricating oil in the grinding roller can be discharged from the ventilation cap to pollute the environment and waste the lubricating oil, and meanwhile, shutdown maintenance is needed, so that the operation of a system is influenced. The invention provides the following technical scheme that the vertical mill grinding roller lubrication system comprises a grinding roller, an oil tank, an oil cooler, a circulating lubrication unit, an oil quality purification unit and a monitoring control unit, a