Material stock solution refining and filtering device and cleaning process thereof

Abstract

The invention discloses a material stock solution refining and filtering device and a cleaning process thereof. The material stock solution refining and filtering device comprises a filtering tank body internally provided with a filtering layer, and a cleaning assembly and a ventilation assembly for cleaning the filtering layer are arranged on the filtering tank body; the cleaning assembly comprises an upper pipe body and a lower pipe body which are arranged at intervals from top to bottom; the ventilation assembly comprises an air inlet formed in the lower pipe body and an exhaust pipe arranged at the top end of the filtering tank body; the material stock solution refining and filtering device can efficiently filter the stock solution, and the yield and efficiency of stock solution refining and filtering are improved. The cleaning assembly and the ventilation assembly are used for sequentially carrying out multiple cleaning steps such as liquid-gas mixing backwashing, backwashing emptying and forward washing short washing on a filtering layer in the filtering tank body, so that the influence of backwashing water on the raw material filtering inlet water concentration is greatly reduced, and meanwhile, the characteristics of simplicity, reliability, high backwashing efficiency and the like of the device are also considered.

Description

technical field [0001] The invention relates to the technical equipment field of material refining and filtering, in particular to a material raw liquid refining and filtering device and a cleaning process thereof. Background technique [0002] At present, in the field of material refining and filtration treatment (such as brine refining, material concentration and separation), mechanical filters commonly used in water treatment (such as quartz sand filters, activated carbon filters, fiber bundle filters, etc.) are often used for the pretreatment of raw materials. ). However, in the conventional cleaning process, due to the large flow rate of backwashing and the high value of the raw material solution, cheap water sources such as tap water are usually used for backwashing (the backwashing effect of this type of water source is also better than that of the raw material solution). This will cause a large amount of backwash water to remain in the filter after backwashing, whic...

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Problems solved by technology

This will cause a large amount of backwash water to remain in the filter after backwashing, which will have a serious impact on the purity of the subsequent material stock solution

[0003] It is necessary to solve the problem that the residual backwash water affects the concentration of the subsequent material stock solution. The most direct and feasible way is to add an emptying link after backwashing. However, the conventional mechanical filters for water treatment on the market currently do not need to be installed due to their limited processing requirements. Automatically empty the valve or only set a small diameter manual emptying valve, so there are only two ways to automatically empty:

[0004] First, add a large-diameter automatic emptying valve, but this will not only increase the cost of the filter, but also make the filter and control system more complicated and increase the risk of failure

[0005] Second, use the automatic positive flushing drain valve on the filter outlet pipe to complete the drainage, but in this way, there will still be backwashing water between the bottom of the tank and the positive flushing drain valve, and as a result, a large amount of material stock solution is still required to be flushed and drained , to eliminate the impact of this part of the residual backwash water on the concentration of the material stock solution, which is not only a waste of the material stock solution, but also prolongs the positive flushing time, affecting the output and efficiency of the entire process section

Therefore, the above two methods have obvious disadvantages

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