尾矿泥浆脱水设备

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How does the filter press work?

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How does the filter press work?

Date of release:2018-03-14 Author: Click:

   

   When the hydraulic press of the filter press presses the machine tightly, the hydraulic station supplies the high pressure oil, and the component chamber formed by the fuel tank and the piston is filled with oil. When the pressure is greater than the frictional resistance of the press plate, the press plate slowly presses the filter. The plate, when the pressing force reaches the pressure value set by the relief valve (shown by the pressure gauge pointer), the filter plate, filter frame (plate and frame type) or filter plate (box type) is pressed, and the relief valve starts to unload At this time, the motor power is cut off, the pressing action is completed, and when the valve is retracted, the reversing valve is reversed and the pressure oil enters the rod chamber of the cylinder. When the hydraulic pressure overcomes the frictional resistance of the pressing plate, the pressing plate begins to retract. .

    When the hydraulic pressure of the filter press is automatically maintained under pressure, the pressing force is controlled by the electric contact pressure gauge, and the upper limit pointer and the lower limit pointer of the pressure gauge are set at the values required by the process, when the pressing force reaches the pressure gauge When the upper limit is reached, the power supply is cut off and the pump stops supplying power. Since the internal leakage and external leakage of the oil system may cause the pressing force to decrease, when the pressure reaches the lower limit pointer of the pressure gauge, the power supply is turned on, the oil pump starts to supply oil, and the pressure reaches the upper limit. The power supply is cut off, the oil pump stops supplying oil, and the circulation is repeated so as to ensure the effect of pressing force during filtration of the material.

    Filtration method: The outflow of the filtrate is clearly defined by flow filtration and underflow filtration. Clear flow filtration, each filter plate is equipped with a water nozzle on the outlet hole, and the filtrate flows out of the nozzle. Underflow filtration, there is a liquid outlet channel hole below each filter plate, and the liquid outlet holes of several filter plates are connected into a liquid outlet channel, which is discharged from the pipeline connected to the liquid outlet hole below the thrust plate.

    Washing method: When the filter cake needs to be washed, sometimes flow unidirectional washing and bidirectional washing, dark flow unidirectional washing and bidirectional washing. In the one-way washing with clear flow, the washing liquid enters in turn from the washing liquid inlet hole of the thrust plate, passes through the filter cloth and then passes through the filter cake, and flows out of the non-porous filtering plate. At this time, the liquid outlet nozzle of the orifice plate is closed. The orifice of the non-porous plate is open. Ming-flow two-way washing is that the washing liquid is washed twice from the two sides above the thrust washer into the hole, ie, the washing liquid is first washed from one side and then washed from the other side. The outlet of the washing liquid is the diagonal with the import. Direction, so it is called two-way cross washing. In the one-hundred flow one-way flow, the wash liquid enters the orifice plate from the washing liquid inlet hole of the thrust plate, passes through the filter cloth and then passes through the filter cake, and flows out of the non-porous filter plate. The undercurrent two-way washing is that the washing liquid is washed twice from the two washing liquid inlet holes on both sides above the stop plate, that is, the washing is first washed from one side, and then washed from the other side. The outlet of the washing liquid is a diagonal direction. Therefore, it is also called undercurrent bidirectional cross wash.

    Guangzhou Longyue Environmental Protection Machinery Co., Ltd. produces a variety of filter press products widely used in various industries.


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Key word:带式压滤机,带式污泥脱水设备,泥浆脱水设备

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