1. Suction pipeline installation and requirements
2) The suction pipe should be tightly connected, without air leakage, so as not to make the pump suction air at work, resulting in noise in the system, so that the oil can not be sucked, therefore, it is recommended to use sealant at the pump suction port and suction pipe connection.
3) in addition to the plunger pump, usually in the way of hydraulic pump suction pipe should be installed filters, oil filter precision is usually 100 ~ 200 mesh, flow ability of the filter at least equivalent to twice the rated flow of the pump, should consider when cleaning, dismantling convenient at the same time, the general in the process of the design of the tank, the hydraulic pump oil suction filter near open hand hole is based on this consideration.
1) The main return pipe of the actuator and the return pipe of the relief valve should be extended below the liquid level of the oil tank to prevent oil splashing and bubbles, and the return pipe should be cut out of a 45° diagonal opening towards the tank wall.
2) Back pressure is not allowed when the drainage port of pressure reducing valve, sequence valve and solenoid valve with external leakage is connected with the return pipe. Otherwise, the drainage port should be connected to the oil tank separately, so as not to affect the normal operation of the valve.
3) Tubing installed in horizontal plane should have a gradient of 3/1000 ~ 5/1000. When the pipe passes long, a pipe clamp should be fixed every 500mm to hold the tubing.
Pressure pipeline installation position should be close to the equipment and the foundation, at the same time to facilitate branch pipe connection and maintenance, in order to prevent pressure pipeline vibration, piping shall be installed in the strong places, where the vibration to add damping to eliminate vibration, or wood, hard rubber pad on the pipe clamp, so direct contact with the metal parts don't line.
4. Rubber hose installation and requirements
A rubber hose is used to connect two parts that move in opposite directions. When installing rubber hoses, ensure that:1) To avoid sharp turns, the bending radius R should be greater than 9 ~ 10 times the outer diameter, and the bending should be at least 6 times the diameter from the joint. When the hose is bent, the installation of the hose joint should be on the same movement plane to prevent torsion. At the joint should be free hanging, avoid bending by its own weight.
2) The hose can not work under tension, there should be a certain allowance (length change of about 4%). If the hose is too long or under sharp vibration, it should be clamped with pipe clamps. However, when the hose is used under high pressure, clamps should be used as little as possible. Because the hose is deformed under pressure, friction energy will be lost at the clamps.
3) The hose should be installed as far away from heat sources as possible, and heat shield or heat sleeve should be installed if necessary. Hoses and connectors must be compatible with the environmental conditions.
