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China hydraulic pump manufacturers,
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with the structural parameters of the pump.
Horizontal Piston Pump
Horizontal piston pumps are installed in parallel by several plunger (typically 3 or 6), with a crankshaft via connecting rod slider or by the eccentric shaft is directly driven reciprocating plunger to achieve suction, exhaust fluid hydraulic pump. They are also using valve type flow device, and mostly quantitative pump. Mine hydraulic support systems are generally horizontal piston pump emulsion.
Emulsion pump for the coal face, to provide hydraulic support for the emulsion, works by the rotation of the crankshaft driven piston reciprocating motion, to realize aspiration and drainage.
Axial formula
Axial piston pump (English name: Pistonpump) is the direction of reciprocation of the piston and the cylinder center axis parallel to the piston or plunger. Use and transmission shaft parallel axial piston pump plunger reciprocates volume change produced by the plunger bore in to work. Since the plunger and the plunger hole are circular parts, can be achieved with high precision machining, and therefore high volumetric efficiency
Straight axis swashplate
Straight axis swashplate piston pump into pressure from the sucking oil type and type two. Pressure type oil pump are mostly used have pressure tank, after pressure by hydraulic oil tank after each start the machine, such as hydraulic stains box must use air pressure, to operate machinery. Such as insufficient hydraulic pressure to start the machine tank, pump will cause the inner shoe and pull off phenomenon, can cause abnormal wear of the pump body board and return the platen.
Radial
Radial piston pump with flow valves can be divided into the axial flow of two categories. Valve with flow radial piston high failure rate, low efficiency shortcomings. International 70, shaft 80 years the development of radial piston pump with flow valves to overcome the lack of radial piston pump with flow. Because the characteristics of the radial pump structure, fixed axial flow of radial piston pump axial piston pump than the impact resistance, long life, high control accuracy. Variable stroke is short variable pump plunger and the stopper at a variable ram effect, changing the stator eccentricity achieved, and the maximum distance of the eccentric scheduled 5-9mm (depending on the size of the displacement), variable stroke is very short . And the variable mechanism designed for high pressure operation, the control valve is controlled. Therefore, fast response speed of the pump. Radial structure designed to overcome such as axial piston pump shoe eccentric wear problems. The ability to impact greatly.
Hydraulic
After the hydraulic piston by pneumatic hydraulic oil tank after each time you start the machine, such as hydraulic oil tank must be reached using air pressure to operate machinery. Straight axis swashplate piston is divided into two kinds of pressure from the sucking oil type. Pressure type oil pump pressure tank have mostly used, but also pump up the oil itself with the cylinder to provide pressure oil pump inlet port. Self-suction-type pump self-absorbing ability is very strong, no external oil supply.
The main purpose of the high-pressure pump is the power source as the jack, upsetting the first device, extruders, Zhahua machine hydraulics. High-pressure pump installation sequence is as follows: During the installation of the high-pressure pump in order to prevent debris falling into the machine, the unit shall cover all perforations. The unit on the basis of anchor bolts buried in between the base and the base with a pair of wedge pad with correction. Calibration pump shaft and motor shaft concentricity, on the road linking the outer shaft, the allowable deviation 0.1 mm; two coupling plane gap should ensure that 2 to 4 mm, (a small pump to take a small value) gap should be uniform, tolerance 0.3 mm. After the connected piping and determine the motor direction of rotation, connect the coupling, and then check it again aromatic concentric shaft. After the actual test run the unit 2 to 3 hours, for a final check, if no adverse phenomenon, is considered qualified to install. In the commissioning process, check the bearing temperature and vibration are as follows: Loosen the coupling large, with a horizontal instrument were placed on the electric oil pump shaft and the base, by adjusting the wedge pad, correction unit level, tighten the bolt appropriate to Anti-around. In order to prevent pipeline debris into the pump, to the newly installed pipeline should be installed in the pump glue filter, the effective cross-section should be greater than 2 to 3 times the suction pipe section.
