Guangzhou Weihong Machinery Equipment Co., Ltd. |
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PVD-1B-32P-11G5-4191A Hydraulic Piston Pump PVD-1B-32P Hydraulic
Pump
Specifiion
Type | PVD-1B-32P-11G5-4191A Hydraulic Piston Pump PVD-1B-32P Hydraulic Pump |
Part Number | PVD-1B-32P-11G5-4191A |
Power | Hydraulic |
Appliion | Excavator |
Stock | in Stock |
Condition | 100% New |
Service | OEM |
Packing | Neutral Packing |
Warranty | 6 month |
Quality | 100% Tested |
Description
Hydraulic Piston Pump is powered by the reciproing motion of the
piston. The plunger pump is a variable pump, which is mostly used
for high-precision high-pressure control. The plunger pump has high
working pressure. ;High efficiency and convenient flow regulation.
The plunger pump has high pressure, stable performance, high cost,
minimal pulsation, and can be variable. It is commonly used in
high-pressure systems and engineering machinery. But his
self-priming is the worst.
When the engine drives the transmission shaft to rotate, the
connecting rod pushes the plunger to reciproe in the cylinder
block, and at the same time, the front of the connecting rod drives
the piston to rotate together with the cylinder block, and the oil
distribution plate is fixed.
During the work, under the action of the cam and the plunger
spring, the plunger moves up and down repeatedly to complete the
oil pumping task. When the recess of the cam is partially turned,
the plunger moves downward under the action of the plunger spring,
and the space on the upper part of the plunger is the vacuum of the
pump oil chamber. At this time, the oil inlet on the plunger sleeve
at the upper end of the plunger will be opened. , the hydraulic oil
in the upper oil passage of the oil pump enters the pump oil
chamber through the oil inlet hole, the plunger moves to the top,
and the oil inlet is completed.
When the camshaft rotates to the recessed part of the cam to push
up the rolling element, the plunger spring is compressed, the
plunger moves upward, the hydraulic oil is pressurized, and a part
of it flows back to the upper body oil cavity through the oil hole.
When the top surface of the plunger covers the oil inlet hole, the
oil distribution chamber on the top of the plunger becomes a sealed
space due to the small matching gap between the plunger and the
cylinder liner, the plunger continues to rise, and the oil pressure
in the pump oil chamber decreases rapidly , When the pump oil
pressure is greater than the oil outlet spring, the hydraulic pump
is pushed out, and the high pressure liquid enters the oil cylinder
through the main operating valve.
When the plunger is supplied with oil, it is connected with the
chute on the plunger and the oil return hole on the cylinder liner,
and the high-pressure oil path of the pump oil chamber is connected
with the middle hole and the chute of the plunger head, the oil
pressure drops, and the output The oil valve is closed under the
action of the spring to stop the oil supply. The plunger continues
to descend, and when the recess of the cam is partially turned,
under the action of the spring, the plunger descends again to start
the next cycle.
Chuanqi's K3V pump is widely used in excavators. The main pump of
the excavator is usually a double pump, the extra pressure is
34MPA, and the maximum pressure can reach 39MPA in an instant. The
reason why the pump oil pressure of the plunger pump is higher than
that of the gear pump is that its work and volume efficiency are
higher. At present, a small number of hydraulic excavators use
swash plate variable displacement axial piston pumps. Usually a
double pump is used, and two plunger pumps are connected in series
with a through shaft, so it is also called a through shaft pump.
The through-shaft pump used on the excavator can also be connected
with a pinion pump as a servo pump (that is, a pilot pump), which
greatly simplifies the parts of the excavator.
Characteristic
1. The parts constituting the sealing volume are cylindrical
plungers and cylinder holes, which are easy to process and can
obtain high matching accuracy;
2. Good sealing performance, still high volumetric efficiency under
high pressure;
3. The flow rate can be changed only by changing the working stroke
of the plunger, which is easy to realize the variable;
4. The main parts in the plunger pump are all subject to
compressive stress, and the material strength properties can be
fully utilized.
5. Because the plunger pump has high pressure, compact structure,
high efficiency and convenient flow adjustment, it is used in
systems requiring high pressure, large flow and high power and in
occasions where the flow needs to be adjusted, such as gantry
planers, broaching machines, hydraulic presses, construction
machinery , mining metallurgical machinery, ships have been widely
used. According to the arrangement and movement direction of the
plunger, the plunger pump can be divided into two egories: radial
plunger pump and axial plunger pump. There are two types of plunger
pumps in the distribution device, which can be divided into
quantitative plunger pumps and variable plunger pumps according to
whether the displacement is variable.
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