AA4VS0180DR30R-PPB13N00 恒压变量泵 保持恒定压力的场合

AA4VS0180DR30R-PPB13N00 是恒压变量泵是一种特殊的液压泵，它能够在系统压力反馈值低于其调定压力时，以最大流量进行工作，一旦系统压力达到或超过这一调定压力，泵便能自动调节其输出流量，以保持压力的稳定。这种泵在液压系统中发挥着至关重要的作用，特别是在需要保持恒定压力的场合。
恒压变量泵通常由基泵与变量机构组成，其中基泵一般采用传递效率高的柱塞泵，而变量机构则采用内控式。当系统输出压力小于调压弹簧调定的压力时，柱塞泵的斜盘倾角最大，即泵以最大排量工作。当系统输出压力达到弹簧调定压力时，泵输出的高压油进入恒压控制阀，使得恒压控制阀的阀芯移动，进而改变变量缸体的位置，从而调节斜盘倾角，减小泵的排量。这样，泵就能根据系统需求自动调整其输出流量，以维持恒定的压力。
恒压变量泵在多种工业应用中都发挥着重要作用，尤其是在那些执行机构长时间处于无位移或小位移状态，同时需要在保压状态下工作的设备中。例如，冶金、矿山、工程机械等行业就广泛使用了恒压变量泵。在这些应用中，恒压变量泵能够确保泵供流量与系统所需达到一致，从而实现高效节能，同时减少了高压大流量系统的发热。

AA4VS0180DR30R-PPB13N00

AA4VS0180DR30R-PPB13N00 Constant pressure variable pump is a special type of hydraulic pump, it can work at the maximum flow rate when the system pressure feedback value is lower than its set pressure, once the system pressure reaches or exceeds this set pressure, the pump can automatically adjust its output flow to maintain the stability of the pressure. Such pumps play a vital role in hydraulic systems, especially where constant pressure needs to be maintained.
The constant pressure variable pump is usually composed of a base pump and a variable mechanism, of which the base pump generally uses a plunger pump with high transfer efficiency, and the variable mechanism uses an internal control type. When the system output pressure is less than the pressure adjusted by the pressure regulating spring, the swash plate inclination Angle of the plunger pump is the largest, that is, the pump works at the maximum displacement. When the output pressure of the system reaches the spring set pressure, the high pressure oil output by the pump enters the constant pressure control valve, which makes the spool of the constant pressure control valve move, and then changes the position of the variable cylinder block, so as to adjust the tilt Angle of the swash plate and reduce the displacement of the pump. This allows the pump to automatically adjust its output flow according to system requirements to maintain a constant pressure.
Constant pressure variable pumps play an important role in a variety of industrial applications, especially in those devices where the actuator is in a non-displacement or small displacement state for a long time and needs to work in a maintained pressure state. For example, constant pressure variable pump is widely used in metallurgy, mining, construction machinery and other industries. In these applications, constant pressure variable pumps ensure that the pump supply flow is consistent with the system requirements, thus achieving high energy efficiency and reducing heat generation in high pressure high flow systems.

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