Lithium-based grease automatic lubricating system of cement vertical mill

Abstract

The utility model relates to the technical field of mechanical equipment maintenance, in particular to a lithium-based grease automatic lubrication system of a cement vertical mill, which comprises a central control room network, the central control room network is connected with a centralized lubrication host through wireless signals, and the centralized lubrication host is connected with a valve control box through a high-pressure oil pipe. The valve control box is connected with an oiling point through a branch oil pipe, and the centralized lubrication main machine comprises a high-pressure pump. The utility model solves the problems that the existing lubricating mode is mostly manual quantitative lubrication, overheat occurs due to overlarge oil filling amount, abrasion is aggravated due to oversmall oil filling amount, shutdown oil filling is needed when internal lubricating points are filled with oil, and upstream and downstream equipment needs to be started and stopped simultaneously, effectively reduces abrasion caused by insufficient lubrication when the equipment is in heavy load, reduces the current by more than 10%, and improves the service life of the equipment. Working of other pipelines is not affected by failure of a single pipeline, waste is avoided by automatic shutdown and alarm during oil leakage, consumption of lubricating oil can be reduced by about 20% by oiling according to needs, and lubricating conditions and remaining oil can be monitored on line.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment maintenance technology, specifically to an automatic lithium-based grease lubrication system for a cement vertical mill. Background Technology

[0002] Vertical mills are commonly used equipment in the cement industry. Due to their large production load and long operating time, they are easily affected by materials and their operation is unstable. When lubrication is insufficient, joints such as mill disc bearings, reducers, and rollers are prone to wear, which affects production safety, increases the labor intensity of workers, and increases maintenance costs.

[0003] Existing lubrication methods are mostly manual quantitative lubrication. Excessive lubrication can cause overheating, while insufficient lubrication can exacerbate wear. Lubrication of internal lubrication points requires stopping the machine, and upstream and downstream equipment must be started and stopped simultaneously. Utility Model Content

[0004] The purpose of this invention is to provide an automatic lithium-based grease lubrication system for cement vertical mills, which has the advantages of on-demand lubrication, online monitoring, and automatic start-stop of upstream and downstream equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic lithium-based grease lubrication system for a cement vertical mill includes a central control room network, which is wirelessly connected to a centralized lubrication host; the centralized lubrication host is connected to a valve control box via a high-pressure oil pipe, and the valve control box is connected to a refueling point via a branch oil pipe; the centralized lubrication host includes a high-pressure pump, which is located at the bottom of the internal cavity of the centralized lubrication host.

[0007] An oil storage tank is fixedly installed on the top of the high-pressure pump, an infrared sensor is fixedly installed on the top of the oil storage tank, and a PLC and a matching touch screen are fixedly installed on the top of the inner cavity of the centralized lubrication host.

[0008] The valve control box includes a solenoid valve, and a multi-way valve block is mounted on the surface of the solenoid valve. The outlet of the multi-way valve block is connected to a pressure transmitter, and the outlet of the pressure transmitter is connected to a pressure reducing valve.

[0009] Preferably, the oil outlet of the oil storage tank is connected to a solenoid valve via a high-pressure oil pipe, and the central control room network is connected to the input signals of the PLC and the matching touch screen via a network cable protocol.

[0010] Preferably, the output terminals of the PLC and the matching touch screen are unidirectionally electrically connected to the input terminals of the solenoid valve and the pressure transmitter respectively via communication lines, and the output terminal of the pressure transmitter is connected to the input terminals of the PLC and the matching touch screen via signal.

[0011] Preferably, there are several refueling points, and each refueling point is matched with a valve control box, and the pressure reducing valve is connected to the refueling point through a branch oil pipe.

[0012] Preferably, the detection end of the infrared sensor extends into the interior of the oil storage tank, and the output end of the infrared sensor is connected to the input end of the PLC and the matching touch screen.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses a centralized lubrication unit for oil supply, which effectively reduces wear caused by insufficient lubrication when the equipment is under heavy load, reduces current by more than 10%, and ensures that a single pipeline failure does not affect the operation of other pipelines. It also features automatic shutdown alarm for oil leaks to avoid waste, and on-demand refueling can reduce lubricating oil consumption by about 20%. The lubrication status and remaining oil level can be monitored online, and a single oil replenishment can last for more than 6 months, saving labor costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the system of this utility model;

[0016] Figure 2 This is a schematic diagram of the centralized lubrication host structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the valve control box structure of this utility model.

[0018] In the diagram: 1. Central control room network; 2. Centralized lubrication host; 21. High-pressure pump; 22. Oil storage tank; 23. Infrared sensor; 24. PLC and matching touch screen; 3. Valve control box; 31. Solenoid valve; 32. Multi-way valve block; 33. Pressure reducing valve; 34. Pressure transmitter; 4. Oil filling point. Detailed Implementation

[0019] Please see Figures 1-3 An automatic lithium-based grease lubrication system for a cement vertical mill includes a central control room network 1, which is wirelessly connected to a centralized lubrication host 2; the centralized lubrication host 2 is connected to a valve control box 3 via a high-pressure oil pipe, and the valve control box 3 is connected to a refueling point 4 via a branch oil pipe; the centralized lubrication host 2 includes a high-pressure pump 21, which is located at the bottom of the inner cavity of the centralized lubrication host 2.

[0020] An oil storage tank 22 is fixedly installed on the top of the high-pressure pump 21, and an infrared sensor 23 is fixedly installed on the top of the oil storage tank 22; a PLC and a matching touch screen 24 are fixedly installed on the top of the inner cavity of the centralized lubrication host 2. By setting the PLC and the matching touch screen 24, remote monitoring and adjustment of equipment lubrication parameters can be achieved, and remote manual lubrication can be performed.

[0021] The valve control box 3 includes a solenoid valve 31. A multi-way valve block 32 is installed on the surface of the solenoid valve 31. A pressure transmitter 34 is connected to the outlet of the multi-way valve block 32. A pressure reducing valve 33 is connected to the outlet of the pressure transmitter 34. The pressure transmitter 34 detects the internal pressure of the pipeline.

[0022] When the oil circuit becomes blocked, it detects an increase in oil pressure and sends a signal to the PLC and the matching touch screen 24 for display, reminding the staff to perform maintenance.

[0023] Please see Figure 1 The oil outlet of the oil storage tank 22 is connected to the solenoid valve 31 through a high-pressure oil pipe. The central control room network 1 is connected to the input signals of the PLC and the matching touch screen 24 through the network cable (Modbus TCP) protocol. The central control room network 1 determines the lubrication demand based on the current and temperature, and sends signals to the PLC and the matching touch screen 24 to control the refueling and realize on-demand refueling.

[0024] Please see Figure 1 The output terminals of the PLC and the matching touch screen 24 are unidirectionally electrically connected to the input terminals of the solenoid valve 31 and the pressure transmitter 34 respectively via communication lines. The output terminal of the pressure transmitter 34 is connected to the input terminals of the PLC and the matching touch screen 24 via signal.

[0025] Please see Figure 1 There are several refueling points 4, and each refueling point 4 is matched with a valve control box 3. The pressure reducing valve 33 is connected to the refueling point 4 through a branch oil pipe. Each refueling point 4 is individually controlled by the valve control box 3, and the refueling amount is set according to the different lubrication point positions.

[0026] Please see Figure 1 The detection end of the infrared sensor 23 extends into the interior of the oil storage tank 22, and the output end of the infrared sensor 23 is connected to the input end of the PLC and the matching touch screen 24.

[0027] In use, the staff controls the system through the central control room network 1. The infrared sensor 23 detects the oil level inside the oil storage tank 22. The high-pressure pump 21 pumps the lubricating oil out of the oil storage tank 22 and into the valve control box 3 through the high-pressure oil pipe. When a certain refueling point 4 needs to be supplied with oil, the operator opens the corresponding solenoid valve 31 inside the upstream valve control box 3 through the PLC and the matching touch screen 24, so that the lubricating oil is discharged into the refueling point 4 through the valve control box 3 for oil supply.

[0028] In summary, the lithium-based grease automatic lubrication system of this cement vertical mill, through the cooperation of the central control room network 1, centralized lubrication host 2, valve control box 3 and lubrication point 4, solves the problems of existing lubrication methods, which are mostly manual quantitative lubrication, where excessive lubrication will cause overheating and insufficient lubrication will aggravate wear, and where lubrication points require stopping the machine to lubricate and upstream and downstream equipment need to be started and stopped simultaneously.

Claims

1. A lithium-based grease automatic lubrication system for a cement vertical mill, characterized by: The application relates to a central control room network (1) which is connected with a centralized lubrication host (2) through a wireless signal; the centralized lubrication host (2) is connected with a valve control box (3) through a high-pressure oil pipe; the valve control box (3) is connected with oil filling points (4) through branch oil pipes; the centralized lubrication host (2) comprises a high-pressure pump (21) which is arranged at the bottom of the inner cavity of the centralized lubrication host (2); A storage tank (22) is fixedly installed at the top of the high-pressure pump (21); an infrared sensor (23) is fixedly installed at the top of the storage tank (22); a PLC and a matching touch screen (24) are fixedly installed at the top of the inner cavity of the centralized lubrication host (2); The valve control box (3) comprises an electromagnetic valve (31); a multi-way valve block (32) is installed in communication with the surface of the electromagnetic valve (31); a pressure transmitter (34) is in communication with the outlet end of the multi-way valve block (32); and a pressure reducing valve (33) is in communication with the outlet end of the pressure transmitter (34).

2. A lithium-based grease automatic lubrication system for a cement vertical mill according to claim 1, characterized in that: The outlet end of the storage tank (22) is in communication with the electromagnetic valve (31) through a high-pressure oil pipe; and the central control room network (1) is connected with the input end of the PLC and the matching touch screen (24) through a network protocol.

3. A lithium base grease automatic lubrication system for a cement vertical mill as claimed in claim 1, wherein: The output end of the PLC and the matching touch screen (24) is respectively connected with the input end of the electromagnetic valve (31) and the pressure transmitter (34) through a communication line in a one-way electric connection mode; and the output end of the pressure transmitter (34) is connected with the input end of the PLC and the matching touch screen (24) through a signal.

4. A lithium-based grease automatic lubrication system for a cement vertical mill according to claim 1, characterized in that: The number of the oil filling points (4) is several, and each oil filling point (4) is connected with one valve control box (3) in a matched mode; and the pressure reducing valve (33) is connected with the oil filling points (4) through branch oil pipes.

5. A lithium base grease automatic lubrication system for a cement vertical mill as claimed in claim 1, wherein: The detection end of the infrared sensor (23) penetrates into the interior of the storage tank (22); and the output end of the infrared sensor (23) is connected with the input end of the PLC and the matching touch screen (24) through a signal.

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