standard grease and oil lubrication systems
Single-line Lubrication System
Single-line Lubrication System
Application: Single-line central lubrication systems are used mainly for the lubrication of machinery.
Applications
Single-line central lubrication systems are used mainly for the lubrication of machinery with the following specification:
lubrication points: up to 100
pipe length: up to 30 m
pump pressure: up to 160 bar
Example of Application
General mechanical engineering, bottle cleaning machinery, calender machines, plate conveyors, presses, tyre moulds, packaging machinery, machine tools, brick manufacturing machinery, etc.
Product Features
- The metered quantity can be adapted to the requirement at the lubrication point by changing the metering screw in each injector segment.
- The system can be extended subsequently by connecting additional injectors, or may be reduced by disconnecting injectors.During the intervals between lubricating cycles the pressure in the main line is released so that the lubricant fed into the injectors is supplied to the
other side of the plunger for the next lubrication cycle. This also ensures that no lubricant reaches the lubrication points during the interval in an
uncontrolled manner. - The quantity of lubricant delivered to the lubrication points is to a large extent independent of the back pressure.
- Systems with motor-driven pumps can be operated fully automatically with variable intervals between lubrication cycles.
- In comparison with central lubrication systems using oil, grease systems have the following advantages:
- Grease adheres better to the sliding surfaces and is therefore not so easily forced out of the lubrication gap, even at high bearing pressures.
- Grease forms a reserve in the lubrication connections and the lubrication pockets.
- Grease stands up better to heavy and intermittent loads.
- The grease forced out of the bearing forms a collar of grease which protects the bearing from the ingress of dirt and dust.
Dual-line Lubrication System
Dual-line Lubrication System
Application: Centralised lubrication systems with two main feed lines are chiefly used for the lubrication of machines and plant with large numbers of lubrication points.
Applications
Centralised lubrication systems with two main feed lines are chiefly used for the lubrication of machines and plant with large numbers of lubrication points:
lubrication points: up to 1000
pipe length: up to 150 m
pump pressure: up to 400 bar
Example of Application
Smelting plant, rolling mills, mining, power stations, cement works, sugar refineries, breweries, construction machinery, etc.
Configuration
The lubrication system consists principally of the pump, one 4/2-way or two 3/2-way change-over valves, the two main feed lines, the divider valves arranged close to the lubrication points, the lines leading to the lubrication points, switchgear at the line end, the pressure gauge unit and the controls.
A pressure relief valve is required to protect the pump from over-pressure.
Product Features
- Metering can be adjusted to meet the requirements of the individual lubrication points
- by selection of the appropriate divider valve size,
- by varying the metering setting, and
- by varying the interval.
- The metered quantity is independent of back pressure.
- The systems can at any time be extended by connection of additional divider valves, or reduced by shutting down divider valves or outlets.
- Special monitoring of critical lubrication points is made possible for each pair of divider valve outlets using limit switches.
- The system can be operated fully automatically with variable intervals.
- Up to over 1,000 lubrication points at a distance of 100 metres can be lubricated, depending on the type of pump and lubricant.
- In all automatic systems, the patented switchgear SG-A, which initiates change-over, that is, the pressure change in the two main feed lines, as a function of the differential pressure at the line end, is used. Depending on temperature, lubricant and line dimensions, the optimum working pressure is adjusted automatically and there are, in comparison to systems where the switchgear is provided on the pump, the following advantages:
- Pump load is kept to a minimum.
- Even at low temperature, which causes a slow pressure build-up (pipe friction), delivery of the correct quantity of lubricant is ensured by the switchgear SG-A being installed at the line end.
- Additional monitoring of the main feed lines by means of the switchgear.
Multi-line Lubrication System
Multi-line Lubrication System
Application: The multi-line, centralised lubrication system can be used for lubricating individual machines and small groups of machines or appliances.
Applications
The multi-line, centralised lubrication system can be used for lubricating individual machines and small groups of machines or appliances. In the multiline system, the lubricant is delivered by the pump in metered quantities through several outlets. Each lubrication point is connected to the pump by its own line.
lubrication points: up to 32
pipe length: up to 20 to 40 m
pump pressure: 200 bar
Example of Application
Presses, punching presses, cutters, excavators, cranes, lifts, conveyors, machine tools, packing machinery, pumps, blowers, turbines, building construction machinery, rock crushers, briquetting presses, coke crushers, woodworking machinery, etc.
Mode of Operation
Each lubrication point has its own line connecting it directly to the pump. The lubrication pump develops the pressure necessary to pump the lubricant and overcome the back pressure and it meters the quantity of lubricant required for each lubrication point. A progressive divider valve can be introduced into any of the lines coming from the pump, thereby increasing the number of points being lubricated.
Product Features
- In many cases it is possible to control the pump from the machine to be lubricated, which eliminates the need for a separate control system.
- With most types of pumps, the lubrication quantity can be adjusted at the pump for each lubrication point.
- Continuous operation of the pump with very small quantities of lubricant.
Automatic Grease Refill Systems
Automatic Grease Refill Systems
Application: Air operated refill pumps are used to refill the grease reservoirs on electric pumps which serve large centralised lubrication systems..
Applications
Air operated refill pumps are used to refill the grease reservoirs on electric pumps which serve large centralised lubrication systems.
Example of Application
In steelworks on milling stands, continuous casting machines, etc.
On stackers / reclaimers
Grinding mills on mines
Mode of Operation
When the low level sensor on the grease reservoir is activated, the PLC will energise the 2/2 way solenoid valve and allows compressed air to operate the pneumatic drum pump which transfers grease from the drum to the pump reservoir via a strainer. The low level sensor will de-activate once grease enters the reservoir, but the PLC maintains the grease flow until the reservoir is full, as monitored by the level sensor.
Optionally, a lifting ram can be supplied to lift the pump out of the drum pneumatically. This is used to replace an empty grease drum with a new one. It is a clean process as the drum pump cannot get dirty.
Product Features
An automatic refill system is recommended where large amounts of grease are used in a short time or where lubrication sytems are unattended, like on weekends.
Gear Wheel Lubrication System NV-K
Gear Wheel Lubrication System NV-K
Application: This system has been developed to put a film of lubricant onto the gear teeth.
Applications
This system has been developed to put a film of lubricant onto the gear teeth.
The lubricating wheel of the NV-K unit is in mesh with the drive pinion and transfers a metered quantity of lubricant through its outlet ports which are spaced across the gear teeth.
A DELIMON pump supplies the grease to the NV-K unit.
The system is designed to have a run and a pause cycle, therefore the amount of lubricant being transferred onto the gear can be regulated.
Spray Lubrication System
Spray Lubrication System
Application:The spray lubrication system is used where lubricating greases, lubricating oils or even adhesive lubricants need to be applied.
Applications
The spray lubrication system is used where lubricating greases, lubricating oils or even adhesive lubricants need to be applied in an even, metered and selective manner due to user-specific and function-related requirements.
The spray lubrication system allows reductions of up to 50% in the quantities consumed, which is very beneficial in terms of the disposal of old lubricant and the reduction of the associated costs. Spray lubrication systems are used on heavy gearing applications such as grinding mills, rotary kilns, cement mills, coal mines and mixing drums, etc.
Product Features
- Metering and apportioning of the lubricant volume to the spray points is carried out by progressive divider valves.
- The compressed air used for the actuation of the pump is the same as that used for spraying if a pneumatic pump is used.
- The use of mixing segments allows for the dispensing of a metered quantity of lubricant to the friction points over an adjustable period of time. In the case of gear spray lubrication systems, the lubricant, once delivered, is further spread onto the greatest possible number of teeth by means of the gears.
- With the help of the limit switch, which is attached to the progressive divider valve, the delivery of grease and the correct mode of working of the divider valve are monitored simultaneously.
- The pressure switches monitor the minimum air pressure required for spraying as well as the unhindered flow of the spray mixture out of the nozzles.