The paper industry by its process decision equipment clusters and monomer is relatively large, and continuous, high degree of automation. Therefore, once the damage is often a huge impact, many companies in order to avoid as far as possible major problems and the emergence of uncontrollable problems brought about by the loss of the mechanism designed to constantly change and improve, such as fixed inspection, point inspection, etc., to a large extent, has been controlled.
On this basis, advanced equipment testing methods play its important role. Successful fault diagnosis, especially one that reports faults moderately in advance, will yield significant benefits. This benefit is extremely considerable in special cases. Secondly, fault diagnosis technology can have a huge supporting effect on equipment maintenance. It can not only greatly save human resources, but also change the maintenance mode - to advanced state of the art maintenance mode gradually replace the planned maintenance mode, and even the inventory of spare parts management mode will have a positive impact. Therefore, American Megaworld International Corporation continuously integrates and improves the existing resources and means on the basis of the cooperation platform with the users to truly realize the purpose of helping the users to control the cost and improve the comprehensive benefits. The working environment of paper-making machinery is humid and high temperature, and some equipment is also accompanied by shock loads, so the main consideration in the selection of lubricants is its anti-emulsification, water resistance, heat and oxidation stability and load resistance. The lubrication points on the paper machine are closed in principle. Paper machine wet section of the pulp box to the press section of the bearings are sealed bearing shell to prevent water immersion and grease overflow caused by cross-contamination. The dry section of the paper machine uses a central lubrication station to deliver lubricant under pressure to the bearings for lubrication and heat dissipation due to the high temperatures during operation. Wet end of the grease lubrication point more than regular manual inspection visits to check the injection, change the grease method, so the lubrication system often refers to the dry section of the central lubrication station and all the transmission, oil supply pipeline and oil injection device.
Paper machine dry section of the lubrication station is usually selected in the standard general-purpose models, preferably in the oil filtration capacity and oil temperature control ability of the better, such as magnetic filter and thermostatic control is more appropriate. Lubrication station oil volume should usually be calculated according to the lubrication point heat dissipation needs.
Paper machine dry section of the closed bearing shell of the oil supply more adjustable oil injector, it is also known as drip valve, it makes the oil supplied to the bearings in the right amount and continuous. This kind of oiler is very suitable and reliable for the system which adjusts the oil quantity manually.
On the new high-speed, wide-format paper machines, the main bearings in the wet section are also centralized with a central lubrication station for automatic forced lubrication. In this system, the wet and dry sections of the paper machine each with a central lubrication station, but unified by the automatic control system for management and manipulation. The lubrication points of the control of the amount of oil injected by micro-motor driven by a small metering pump to achieve, the automatic control system by means of an electronic computer or other software control on the oil injection pipeline flow meter, pressure gauge and other monitoring and metering of the oil injection pump motor to achieve regulatory control. Pulp and paper machinery, including pulp machinery and paper machinery and paper decoration, processing equipment, specific lubrication as follows:
1, pulp machinery lubrication
Pulp machinery, including the preparation of materials, pulp two types of equipment. Pulp machinery lubrication is characterized by the working environment is humid, high temperature, both impact load. Generally require better heat resistance, oxidation resistance, anti-emulsification and rust resistance, viscosity 46-100 anti-oxidant and rust-resistant lubricants. There are also to use heat resistance and good mechanical stability of the No. 2 or No. 3 composite calcium-based, sodium-based or lithium-based grease, and even the use of molybdenum disulfide or graphite grease. Pulp cooking equipment bearings and gears work at higher temperatures, often using industrial gear oil or grease lubrication. Overview of pulp machinery lubrication components are bearings, worm gears, reducers, closed, open gears, once involved in the L-HL hydraulic oil, L-CkC industrial gear oil; calcium-based grease, composite calcium-based grease, general-purpose lithium-based grease, graphite calcium-based grease and semi-fluid lithium grease and other types.
2, paper machine lubrication
Paper machine lubrication points in principle are closed. Wet section of the paper machine bearings are closed bearing shell to prevent water intrusion and grease overflow caused by cross-contamination. The dry section of the paper machine due to high operating temperatures and the use of a central lubrication station to pressure delivery of lubricant to the various bearings for lubrication and heat dissipation. To summarize the lubrication components of the paper machine, there are transmission reduction gearbox, worm gearbox, general plain bearings, rolling bearings, exhaust fans, rolling bearings in the wet section, wire ropes, and oil for the central lubrication station (dry section lubrication). The oils and greases ever involved are hydraulic oil, oil for total loss system, calcium-based grease, sodium-based grease, graphite calcium-based grease and other types.
3, paper machine and its ancillary equipment lubrication
(1) branch transmission reduction gearbox, the center lubrication station oil (dry section lubrication), shaking box, worm gear box, general sliding bearings:
are used in the hydraulic oil or total loss system oil lubrication with L-HL46 or L-AN46, oil 40 ℃ when the viscosity of 41.4 ~ 50.6mm2 / s, the oil. Flash point (opening) >180 ℃, freezing point <-10 ℃.
(2) Rolling bearings in wet section:
Calcium base grease, dropping point >80℃, taper in (25℃, 1/10mm) 265～295.
(3) Rolling bearings in exhaust fan, wet heat place: sodium base grease, dropping point >40℃, taper in (25℃, 1/10mm) 220～250.
(4) Steel wire rope:
Calcium graphite base grease, ZG-S, dropping point >80℃.