With the continuous development of China's industrial reform and emerging industries, especiallyWith the arrival of the 21st century, China has intensified its reform efforts, joined the World Trade Organization, and integrated with the international community. Expanding the market and promoting social development through import and export trade have also brought opportunities to the lubrication industry, and lubrication technology has undergone earth shattering changes.
Traditional lubrication methods have dominated the market for many years and are still in use today. dry oilcentralization lubricationUp to now, both domestically and internationally, the development of lubrication systems has always revolved around single line progressive lubrication, double line and multi line lubrication systems. However, all three lubrication systems have shortcomings that cannot be solved in principle to varying degrees.
Single line progressive lubrication system: It has only one main line, usually consisting of onepiston pumpInject lubricant into the main pipeline and use a single line progressive distributor to deliver the lubricant level by level to the next level distributor and finally to each lubrication point. As long as one lubrication point does not release oil, all progressive distributors will not release oil, and the system pressure will increase. When the alarm limit is reached, the system will report a fault and stop running.
According to the principle, the system has the following drawbacks:
1) The maintenance efficiency is low, which directly affects the safety of the system. Once a single lubrication point does not produce oil, all points in the system will not produce oil. If you want to find the fault, you need to inspect each lubrication point one by one until the specific lubrication point is found. The maintenance process is quite time-consuming.
2) The oil supply range is small, and due to the single-stage distribution, there will definitely be pressure loss during the transportation of lubricants. If the branch pipe is too long, it directly affects the quality of lubrication.
Dual line centralized lubrication system: The dual line centralized lubrication system is mainly composed oflubrication pumpDirectional valve, pressure control valve (or differential pressure switch)Two-line Metering Device The system consists of an electrical control box and two oil supply pipelines. The lubricant output by the lubrication pump is alternately delivered to the dual line distributor through a directional valve, and then quantitatively distributed to each lubrication point through the dual line distributor. The pressure inside the oil supply pipe reaches the required operating pressure of the distributor, and the distributor operates. After the distributor completes its operation, the pressure inside the oil pipe continues to rise. When the pressure in the oil supply pipe has caused the distributor to complete its operation (the system completes one oil supply run), the system pressure rises to the reversing pressure of the directional valve, and the directional valve changes direction for secondary oil supply.
According to the principle, the system has the following drawbacks:
1) The system is supplied with oil alternately through two pipelines, and the oil circuit is opened by reversing the direction based on the pressure difference. As a semi fluid lubrication pipeline, the pressure drop must be considered. If the pressure drop at the initial and final ends is too large, it can easily cause uneven oil output at the proximal and distal ends.
2) Whether the lubrication points have oil leakage is indicated by the oil needle. Each point needs to be inspected on site one by one after each operation. If the user is not careful, they may miss the inspection.
3) The oil supply can only be adjusted by adjusting the length of the oil needle, and it is difficult to meet the lubrication points of different oil supply systems.
Multi point direct lubrication system: With a multi-point pump as the core, different lubrication points can be connected after each outlet, and the oil volume of each outlet can be adjusted. When the lubrication pump is working, each point outputs oil according to the adjusted oil volume.
According to the principle, the system has the following drawbacks:
1) When the multi-point pump fails, all lubrication pumps are not supplying oil;
2) When a single lubrication point is blocked, it may cause damage to multiple lubrication pumps;
3) Unable to meet the common needs of multiple lubrication systems.
Based on the above systems, the world's heavy industry and heavy equipment are looking forward to the emergence of a new type of lubrication system. Summarizing the advantages of various lubrication systems, combined with advanced automatic control technology and sensor technology in the world, many domestic enterprises have developed a new generation of intelligent lubrication methods.
Intelligentlubrication systemThe principle of traditional lubrication methods is completely different, and it is a breakthrough reform in the field of lubrication. The application of the new intelligent dry oil centralized lubrication system will mark the world's dry oil lubrication entering intelligence and modernization. The new generation of domestically produced intelligent dry oil centralized lubrication system, Beijing MCC Huarun, has always been a leader in the lubrication industry. Multiple products have obtained national patents. We have successfully developed the ZDRH-2000 system for row and column control, the ZDRH-3000 system for bus control, and the CAN bus system. And it has been applied in many fields both domestically and internationally. Solved many lubrication problems for customers. Won widespread praise in the industry.
Beijing MCC Huarun Intelligent Dry OilCentralized Lubrication SystemComposition: The upper computer human-machine monitoring system, grease filling station, integrated lubrication station, lines, pipeline fittings, and quantitative oil feeder integration are composed of modular systems. The final execution unit of the system is the intelligent oil feeder integration, and the power source is the composition of each part of the integrated lubrication station.
Upper computer human-machine monitoring system:HMIThe hardware of the monitoring system is composed ofIPCThe display system consists of several parts, including a monitor, communication devices, etcConfiguration SoftwareComposition: The operator can monitor and operate the lubrication system on site through the human-machine interface, and a set of upper computer monitoring system hardware can monitor multiple lubrication systems;
Control cabinet: Inside the control cabinetPLC is the core unit of the system, mainly used to provide power source and command the operation of various lubrication points, control the operation and collection of lubrication points' status, and integrate lubrication stations, grease stations, electromagnetic oil feeders, and sensors for real-time monitoring. It executes according to the set program and carries out communication with the upper computer and interlocking with the host.
Lubricating station: The lubricating station consists of two parts: a grease storage tank and a control system, mainly used to supplement the lubricating grease demand of various integrated lubrication stations. The principle is that when the gravity of the lubrication pump is lower than the set lower limit, the grease storage tank automatically starts to replenish lubricating grease to the lubrication pump. When the gravity of the lubrication pump reaches the set upper limit, the grease storage tank stops working.
Lubrication station: There are two lubrication pumps in the pump station, one in use and one as backup,lubrication pumpIt is the power source of pipeline pressure, whenPressure sensorWhen low pipeline pressure is detected, the lubrication pump automatically starts to replenish pipeline pressure, and stops when the pipeline pressure reaches the set upper limit.
Electromagnetic oil feeder integration: The intelligent oil feeder integration consists of an electromagnetic valve and an intelligent information recognizer;
Characteristics of Intelligent Lubrication
² Single point fuel supply and point by point detection can achieve clear and visible faults at every point;
² Each point can be set with a cycle period and oil supply amount, and the same lubrication system lubrication points can be edited in batches;
² Annual, monthly, and daily oil volume statistics and report management;
² Visual monitoring interface, sitting under the monitor as if facing the scene;
² Intelligent fault diagnosis, easy maintenance and repair;
Scope and application industry
² Mining machinery, port machinery, engineering machinery, etc
² Sintering machine, plate feeder, vibrating screen, mixer, belt cooler, stacker reclaimer, continuous grate machine, and circular cooler, etc
² Blast furnace, overhead crane, continuous casting machine, high-speed wire, various rolling mills, etc
² Lubrication points in harsh environments that are difficult to lubricate manually
² Long distance lubrication point
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