A control chart is a chart with control limits used to analyze and determine whether production is in a steady state. The control chart not only reflects static but also reflects its dynamic product quality. If the top of each rectangle of the figure (the histogram of the gold concentrate grade change) is connected into a rounded line, it becomes a normal distribution curve. Then turn it 90° clockwise, which becomes the basic format of the control chart, see the figure below. The abscissa indicates the sampling time or sample number, and the ordinate indicates the quality characteristic value of the concentrate product. There are three lines on the map. The upper line is called the upper limit of control, the lower line is called the lower limit of control, and the line in the middle is called the center line. In the production process, the quality characteristic value of the concentrate product is changed to a point on the map. If the points all fall within the upper and lower control limits, and the arrangement of these points has no abnormality, it indicates that the production process is normal and in a controlled state; These points go beyond the upper or lower control limits, or the points are not out of bounds, but the defects are arranged, indicating that the production conditions have changed abnormally, in an uncontrolled state, the cause should be immediately identified, and measures should be taken to restore production to normal. .
The function of unloading valve for loader: the compressed air from the air pump enters the Air Brake Booster with constant pressure to ensure the safety of Loader Brake Clamp
Unloading valve for loader working principle: unloading relief valve is composed of relief valve and one-way valve. When the system pressure reaches the opening pressure of the relief valve, the relief valve is opened and the pump is unloaded; When the system pressure drops to the relief valve's closing pressure, the relief valve closes and the pump loads to the system.
Unloading valve is under certain conditions, can make hydraulic pump unloading valve. Unloading valve is usually a with two two-way valve solenoid valve is (often) the overflow valve, when the function is not unloading set system (pump) is used as the main stress, when unloading state (by two two-way valve action transformation) direct return tank pressure oil, the oil pump pressure drops to approximate to zero, in order to realize some loop control and improve the pump life, reduce power consumption.
In a circuit belonging to a merging circuit. The pressure reducing valve is used to adjust the pressure required by the executive element. It is connected in series in the loop and generally cannot be used interchangeably.
Unloading Valve,Liugong Unloading Valve For Loader,Sdlg Unloading Valve For Loader,Sem Unloading Valve For Loader,Doosan Unloading Valve For Loader Henan Hanfeng Construction Machinery Co., LTD , https://www.hf-loaderparts.com
Control chart (management diagram) concept
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