PCY14-1B constant pressure variable piston pump

DEKE

关键词：

Deke specializes in the production of hydraulic oil pumps. Its main products include A2F/A2FE/A2FM series inclined shaft piston pump/motor, A7V inclined shaft piston pump, A6V variable piston motor, A4VSO, A10VSO axial piston pump, and PV2R series high pressure low noise quantitative vane pump;

key word:

Industrial plunger pump | inclined shaft motor | inclined shaft plunger pump

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+86-18962820125

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Description

Deke Hydraulic specializes in the production of hydraulic oil pumps. Its main products include A2F/A2FE/A2FM series inclined shaft piston pump/motor, A7V inclined shaft piston pump, A6V variable piston motor, A4VSO, A10VSO axial piston pump, and PV2R series high pressure low noise quantitative vane pump;
The enterprise has a technical team and hydraulic pump production equipment. The enterprise adheres to the manufacturing concept of "no best, only better", and its continuous research, development and improvement are only for serving your needs. It is widely used in construction machinery, industrial equipment, metallurgical machinery, plastic machinery, walking machinery, forging, machine tools, shipbuilding, medical treatment, etc.

Model Description

PCY14-1B恒压变量柱塞泵

　　Structural sectional view

　Working principle

The main body (see structural section) is driven by the transmission shaft to rotate the cylinder body, causing seven evenly distributed plungers on the cylinder body to rotate around the centerline of the transmission shaft. The sliding shoes in the column sliding component are pressed onto the variable head (or swash plate) through the central spring. In this way, the plunger moves back and forth with the rotation of the cylinder body, completing the oil suction and pressure actions.

When the output pressure of this variable type pump is less than the set constant pressure, the full displacement output pressure oil, i.e. quantitative output, automatically adjusts the pump flow when the output oil pressure reaches the set pressure to ensure constant pressure and meet the system requirements. The output constant pressure value of the pump can be adjusted steplessly within the pressure regulation range as needed. The structure of the pump is shown in Figure 6, which simultaneously flows the output pressure oil to the lower chamber of the variable piston and the control oil inlet of the constant pressure valve. When the output pressure is less than the set constant pressure, the oil pressure thrust acting on the constant pressure valve core is less than the set spring force. The constant pressure valve is in the open state, and the pressure oil enters the upper chamber of the variable piston. The variable piston is pressed to the lowest position, and the pump outputs pressure oil at full displacement; When the pump is operating at a constant pressure setting, the oil pressure thrust acting on the constant pressure valve core is equal to the force of the setting spring. The inlet and outlet ports of the constant pressure valve are also in an open state, making the oil pressure thrust in the upper and lower chambers of the variable piston equal. The variable piston works in a balanced position. If the hydraulic damping (load) increases, the oil pressure instantly increases, the discharge port of the constant pressure valve opens larger, and the inlet port closes smaller. The pressure in the upper chamber of the variable piston decreases compared to the lower chamber, and the variable piston moves upwards.

The flow rate of the pump decreases until the pressure drops to the set constant pressure. At this time, the variable piston works in a new balanced position. On the contrary, if the hydraulic damping (load) decreases, the oil pressure instantly decreases, the inlet of the constant pressure valve opens larger, the outlet closes smaller, and the oil pressure in the upper chamber of the variable piston increases compared to the lower chamber. The variable piston moves downward, and the pump flow rate increases until the pressure rises to the set constant pressure.

Model specifications

Model PCY14-1B	Nominal pressure Mpa	Nominal Displacement ml/r	Theoretic Flow L/min		Maximum transmission power Kw	Maximum theoretical torque N*m
Model PCY14-1B	Nominal pressure Mpa	Nominal Displacement ml/r	1000r/min	1500r/min	1000r/min	Maximum theoretical torque N*m
2.5	31.5	2.5	2.5	3.75	1.43	17.5
10	31.5	10	10	15	5.7	54.6
25	31.5	25	25	37.5	14.1	134.9
40	31.5	40	40	60	22.6	201.5
63	31.5	63	63	94.5	35.8	339.9
80	31.5	80	80	120	46.6	405.1
160	31.5	160	160	240	92.2	880.3
250	31.5	250	250	375	133.2	1272.4
400	31.5	400	400	-	199.5	1905.2

　　At a nominal pressure of 31.5MPa, there are also derived displacement specifications of 1.25, 5, 13, 16, 32, and 100ml/r