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Maintenance of the special feeding pump for washing sand（Special pump for filter press）

During the use of the special mud pump for the filter press, occasionally the pressure cannot be applied and the pressure is insufficient. After this situation, the material in the filter chamber of the filter press will be insufficiently filtered, the moisture content will be high, and the speed of pressing will be affected， increase the pressing time. When such a problem occurs, the cause and solution should be found out in time to avoid affecting production efficiency.

If the pressure of the special pump for the filter press is insufficient and the pressure cannot be applied, the reasons should be found from the following aspects:

1. The working condition of the filter press should be checked. Since the filter press equipment is a complete system, the interior is a closed environment during operation, and the pressure relief of a certain link will cause insufficient system pressure. The inspection items mainly include whether there is a hole in the filter cloth, whether the hydraulic system leaks oil, and whether there is leakage at the seal.

2.Secondly, check the pipeline and gate valve, including the gate valve of the feed pipeline of the filter press and the feed and discharge gate valves of the filter press pump, mainly to check whether the pipeline is damaged, whether the gate valve is fully opened, and whether there is leakage.

3. Check the working condition of the special pump for the filter press to see if there is any blockage. The blockage will lead to insufficient flow and slow flow rate, which will affect the pressure and feeding. In addition, for the newly installed pump, it should be checked that the speed is too low and the motor power is too small, both of which will cause this phenomenon; for the pump with problems in normal use, the special pump for tailings wastewater filter press , the power speed is generally no problem, it is necessary to check whether the impeller is seriously worn, and check whether there is leakage in the seal of the pump.

4. After finding the problem, it should be solved in time. If the pressure is insufficient and the pressure cannot be applied again, it should be further investigated to see if there are multiple leak points or multiple reasons for this situation.

What are the filtration characteristics of the feed pump for the filter press feed pump for sand washing?

What are the filtration characteristics of the filter press feed pump:

1. Feeding stage: When feeding begins, the filter chamber of the filter press is empty and needs to be filled with materials quickly. (YBH pump large flow feed quickly fills the filter press)

2. Pressure boosting filtration stage: when the filter press is filled with materials, the pressure begins to rise, and the filter press quickly discharges water. At this time, the filter press needs a large feeding flow. (YBH pump low pressure, large flow, constant feed fast filtration) .

As the feed pressure gradually increases, the filter cake in the filter press begins to form and thicken, the water output of the filter press begins to change from large to small, and the filtration capacity of the filter press also increases. From large to small, the amount of feed also decreases. (The output flow of the YBH pump automatically changes from large to small, the hydraulic system, without overflow, starts energy-saving operation.)

3. The pressure-maintaining filtration stage of the feed pump of the filter press: the filtration pressure of the filter press rises to the set pressure, and the feed pressure needs to be maintained for constant pressure filtration, and the filtration capacity of the filter press is further reduced until the filtration is completed.