Piston pump is a hydraulic system is an important device, because of its high rated pressure, compact structure, high efficiency and easy flow adjustment and other advantages, has been widely used in hydraulic machines, construction machinery and ships, Much attention and respected. However, many people on how to classify the plunger pump, the type of what is not clear, this small series to discuss with you the classification of plunger pump. Piston pump classification Daquan Piston pump is generally divided into single piston pump, horizontal piston pump, axial piston pump and radial piston pump, the following is the specific classification of the situation: Axial Piston Pump Axial Piston Pump is the piston or plunger reciprocating direction and the central axis of the cylinder parallel to the plunger pump. Axial piston pump is the use of the plunger parallel to the shaft reciprocating motion in the plunger hole volume changes to work. Due to the plunger and plunger hole are round parts, machining can achieve high precision with the volume of high efficiency, smooth operation, flow uniformity, low noise, high working pressure, but the hydraulic oil pollution More sensitive, the structure is more complex, higher cost. 2. Straight shaft swash plate piston pump Straight shaft swash plate piston pump is divided into two types of self-suction oil pressure type. Most of the pressure supply type hydraulic pump with air pressure tank, there are hydraulic pump itself with a charge pump to the hydraulic pump inlet to provide pressure oil. Self-priming oil pump self-priming oil capacity, no external oil supply. By hydraulic pressure oil tank, each time you start the machine, you must wait for the hydraulic pressure box to reach the use of air pressure before operating machinery. If the pressure of the hydraulic tank is low, it will cause the pull-off phenomenon in the hydraulic pump and the slippery whip, which will cause abnormal wear of the return plate and the pressure plate in the pump body. Radial piston pump Radial piston pump can be divided into two types of valve with the flow of the valve with the distribution. Valve distribution radial piston pump there is a high failure rate, low efficiency radial piston pump shortcomings. The international development of the 70,80 generation shaft radial flow radial piston pump to overcome the valve with radial piston pump deficiencies. Due to the structural features of the radial pump, Shaanxi set the axial flow radial piston pump axial piston pump impact resistance, long life, high control accuracy. Variable stroke Short pump variable is variable piston and limit plunger under the action of changing the eccentricity of the stator to achieve, and set the maximum eccentricity of 5-9mm (depending on displacement size), the variable stroke is very short . The variable mechanism is designed for high-pressure operation and is controlled by a control valve. Therefore, the pump response speed. The radial structure design overcomes the problem of partial wear of the axial piston pump slipper. Its anti-impact ability is greatly improved. 4. Hydraulic plunger pump Hydraulic plunger pump by hydraulic pressure oil tank, after each start the machine, must wait for the hydraulic pressure tank to reach the use of pressure, to operate machinery. Straight shaft swash plate piston pump is divided into two types of self-suction oil pressure type. Most of the pressure supply type hydraulic pump with air pressure tank, there are hydraulic pump itself with a charge pump to the hydraulic pump inlet to provide pressure oil. Self-priming oil pump self-priming oil capacity, no external oil supply. For self-priming piston pumps, the fluid in the hydraulic tank should not be lower than the lower limit of the oil standard, and a sufficient amount of hydraulic oil should be maintained. The higher the cleanliness of the hydraulic fluid, the longer the life of the hydraulic pump. The above is the four types of plunger pumps, hoping to provide some help for your understanding and learning. Extended reading: "Industry Leader" magazine This article belongs to Industrial Internet (Xiamen) Technology Co., Ltd. All are welcome to reprint, please indicate the author and source. Author: Asian pumps Network Editor: April (QQ / micro letter:) starting: http: //beng.liuti.cn/ (service hotline:)
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