Product DescriptionHydraulic system of spiral welded pipe unit
LH-400: Hydraulic system of the delivery machine is composed of oil
tank device and power source device. Control valve group
cooler and other components, control delivery pressure cylinder and
delivery hydraulic motor with the delivery machine to complete the
feeding process of the screw welding unit.Hydraulic system of
spiral welded pipe unit LH-400Operating Procedures:For the first
time, inject clean hydraulic oil from the air filter port to above
the middle of the level gauge, screw up the flow rate of the
plunger pump, loosen the handle of the reducing valve, throttle
valve, speed regulating valve and relief valve, test the
accumulator inflation pressure (inflation is 4MPa when leaving the
factory) and record the value, then loosen the drain port pipe
joint above the plunger pump, and inject clean hydraulic oil from
here. After reassembly, point the motor, observe the motor
steering from the rear of the motor (pump shaft end),
counterclockwise is correct, after the steering is confirmed to be
correct, point the motor 3-5 times, confirm no abnormal, start the
pump motor, electromagnetic relief valve electromagnet (boost),
adjust the system pressure to 6MPa (reference), The
electromagnet that controls the hydraulic motor generates
electricity, so that the motor rotates forward, and the flow rate
of the plunger pump is adjusted to make the speed of the delivery
machine slightly greater than the required speed. After locking the
plunger pump lock nut, the speed regulating valve is adjusted to
make the delivery speed reach the required value.After the delivery
cylinder is fed into the plate, the electromagnet gets electricity,
and the cylinder presses down on the plate. At this time, the
reducing valve is adjusted to make the pressure gradually increase,
and the delivery roller stops when it is increased to no
skid. When the speed of the delivery roll decreases, the
throttle should be adjusted, after the delivery machine feed into
the molding machine plate, depending on the situation to adjust the
pressure reducing valve pressure and the main system pressure, so
that the force is enough, while the pressure loss is small, the
reverse speed of the delivery machine adjustment, after the
completion of the adjustment, screw the small throttle valve, let
the motor reverse, gradually screw the throttle valve, so that the
reversal speed to meet the required requirements. After the
delivery machine is adjusted to work normally, the lock nut of the
control valve should be tightened. At the same time, observe the
pressure used in the delivery press-down cylinder (pressure
reducing valve), check whether the accumulator pressure P storage
is consistent with the pressure P cylinder, P storage =0.65-0.9P
cylinder. If not, the accumulator should be charged (discharged)
after the delivery machine press-down cylinder is
unloaded. Note that the accumulator can only be filled with
nitrogen and inert gas! When the conveyor delivers the weld at
the interface of the two rolls of plates, it should manually adjust
the pressure of the main system at any time, and restore the
pressure of the system after the weld has passed. When the oil
temperature in the tank exceeds 55ºC, the cooling water of the
cooler should be connected. Five, maintenance and
maintenance: The hydraulic oil of the system is generally
changed about two years according to the oil situation, and the oil
suction filter is changed at the same time. Every three months,
check the filter element of the return oil filter, and properly
clean or change it.Product Parameters
ModelSpecification(mm)Coil width(mm)Thickness(mm)Coil weight
(mm)Capacity(KW)LH-400Φ219-426400-7505-810150LH-500Φ219-529400-8005-1015180LH-600Φ219-630450-10505-12.715190LH-700Φ219-720500-12505-12.715210LH-800Φ219-820500-13006-12.720220LH-1000Φ219-1020500-13006-12.720220LH-1400Φ325-1420500-15606-1830410LH-1600Φ426-1620500-15606-2030410LH-1800Φ508-18201100-16008-25.430510LH-2000Φ508-20201200-20008-25.440530LH-2400Φ508-24001200-20008-25.440530LH-3000Φ508-30001200-20008-25.440530
Factory Certific ations Company ProfileHebei Yongyue
Electromechanical Equipment Co., Ltd. is a professional high-end
cold-bending equipment manufacturer with an annual output of 100
sets of equipment, integrating independent
research, production, development, sales and
service.Our company has long been committed to the development
of straight seam welded pipe equipment, mold and cold bending
equipment.Our company's product quality is
stable and cost-effective. Our Excellent design
engineers and good processing technology ensure the quality and
performance of the equipment.Our company has been passed
certifications of various systems, having a complete and scientific
quality management system.Hebei Yongyue Electromechanical Equipment
Co., Ltd is a professional high-end cold-bending equipment
manufacturer with an annual output of 100 sets of equipment,
integrating indep
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