To make handling operations easier, vacuum hose lifters are installed at the enterprises.
They are manipulator arms performing firm capture of oversized cargoes of heavy weight such as boxes, sacks, metal plates, barrels, etc.
Basic elements of the construction are suction cups (vacuum capture) that are fixed firmly to the flat surface of the cargo, vacuum pump, lifting hose (corrugated pipe), control block.
Operation principle is based on creating vacuum in the lifting hose by using vacuum generator. Cargo restraining or releasing are regulated over the control block that is a system of the valves feeding atmospheric air into the hose.
An operator increases feeding air into the hose to put the suction cups down onto the cargo by using a handle. After that the flow of the atmospheric air feeding into the system reduces, the lifting hose is compressed, and the suction cups seize the cargo firmly. To loosen the seizure. additional amount of air is fed again over the valves system.
Change of the air flow direction in the valves is performed by turning the axle in the body. The parts of this unit are made of stainless steel.
à In process of axle moving the conjugated surfaces of the elements are subjected to wear since they operate without using oils and greases. To reduce friction and wear of the equipment, MODENGY 1001 anti-friction solid-film coating based on molybdenum disulfide and graphite is used.
It forms a thin separating layer on the parts surfaces that minimizes friction, improves smooth moving of the axles, extends service lifetime, and reliability of valves operation.
This coating is applied by method of spraying out of an aerosol can, and cures at room temperature, that’s why producers of the vacuum lifters can use it under conditions of their enterprises without using any additional equipment.