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往复泵的简介 |
一、往复泵的构造和工作原理
reciprocating pump structure and working principle of
主要部件：泵缸、活塞，活塞杆及吸人阀、排出阀。
Main components: pump cylinder, piston, piston rod and the inhalation valve, discharge valve.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。当活塞自右向左 移动时，缸内液体受挤压，压力增大，由排出阀排出。
How it works: the piston moves from left to right, form a negative pressure pump cylinder, then the suction tank fluid through the valve into the pump cylinder. When the piston moving from right to the left, the cylinder of liquid by squeezing, pressure, discharged from the discharge valve.
活塞往复一次，各吸入和排出一次液体，称为一个工作循环；这种泵称为单动泵。
A reciprocating piston, the suction and discharge a fluid, known as a work cycle; a pump called the single-action pump.
若活塞往返一次，各吸入和排出两次液体，称为双动泵。
If the piston round trip, the suction and discharge the two liquids, known as double-acting pump.
活塞由一端移至另一端，称为一个冲程。
Piston from one end to another end, called a stroke.
二、往复泵的流量和压头
reciprocating pump flow and pressure head
往复泵的流量与压头无关，与泵缸尺寸、活塞冲程及往复次数有关。
Reciprocating pump flow and pressure head has nothing to do with the pump cylinder size, and the reciprocating frequency of the piston stroke.
单动泵的理论流量为The theory of single-action pump flow
QT=Asn
往复泵的实际流量比理论流量小，且随着压头的增高而减小，这是因为漏失所致。
The actual flow reciprocating pump flow rate than theory, and with the increased pressure head decreases, which is due to leakage caused.
往复泵的压头与泵的流量及泵的几何尺寸无关，而由泵的机械强度、原动机的功率等因素决定。
The pressure reciprocating pump head and pump flow and pump geometry has nothing to do, but by the pump's mechanical strength, the original motive power and other factors.
三、往复泵的安装高度和流量调节
reciprocating pump installation height and flow regulation
往复泵启动时不需灌人液体，因往复泵有自吸能力，但其吸上真空高度亦随泵安装地区的大气压力、液体的性质和温度而变化，故往复泵的安装高度也有一定限制。
Reciprocating pump start without irrigation were liquid, due to reciprocating pumps are self-priming capability, but the suction on the vacuum pump installed in tandem with the region a high degree of atmospheric pressure, the liquid nature and temperature changes, so the installation of a high degree of reciprocating pump there are certain restrictions on .
往复泵的流量不能用排出管路上的阀门来调节，而应采用旁路管或改变活塞的往复次数、改变活塞的冲程来实现。
Reciprocating pump discharge pipe flow can not be used to adjust the valves on the road, but should be used bypass tube or change the frequency of the piston back and forth, changing the piston stroke to achieve.
往复泵启动前必须将排出管路中的阀门打开。
Reciprocating pump discharge pipe must be before the start of the valve to open.
往复泵的活塞由连杆曲轴与原动机相连。原动机可用电机，亦可用蒸汽机。
Reciprocating piston pump crankshaft by connecting rods connected with the original motivation. Prime mover can be motor, steam engine can also be used.
往复泵适用于高压头、小流量、高粘度液体的输送，但不宜于输送腐蚀性液体。有时由蒸汽机直接带动，输送易燃、易爆的液体。
Reciprocating pump for high head, low flow, high viscosity liquid delivery, but not advisable to transport corrosive liquids. Sometimes, direct driven by the steam engine, transmission flammable and explosive liquid. |
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