Dynamic pressurizing filter pressing plate of filter press

Abstract

The invention discloses a dynamic pressurizing filter pressing plate of a filter press, which is characterized in that flexible linkage mechanisms are arranged on the surfaces of the two sides of a filter plate, flowing liquid is arranged in the flexible linkage mechanisms, the flexible linkage mechanisms are arranged to be of a structure similar to a spider web, and thus the up-and-down fluctuation action of filter cloth can be controlled on the whole. Meanwhile, a rotary driving mechanism is arranged in a feed liquid cylinder mounted in a central through hole of the filter pressing plate androtates by taking passing feed liquid as a driving force, and the rotary motion is converted into power for intermittently extruding the flexible linkage mechanisms, so that the filter pressing effect and efficiency of the equipment are further improved. Meanwhile, the conical inner wall structure designed in the feed liquid cylinder can further improve the power output efficiency, and the filterpressing effect is further improved.

Description

technical field [0001] The invention relates to the technical field of solid-liquid separation, in particular to a dynamic pressure filter plate of a filter press. Background technique [0002] Filter press, especially box-type filter press, is a commonly used solid-liquid separation equipment, which has the advantages of high filtration pressure, large single-machine filtration area, low liquid content of filter cake, light weight of filter plate, and low maintenance and operation costs. Therefore, its application is more extensive. The box-type filter press consists of a set of filter chambers arranged alternately with filter plates and filter frames. The filter frames and filter plates are provided with through holes. After assembly, a complete channel can be formed, and the suspension, washing water and filtrate can be introduced. Under the pressure of the feeding pump, the material liquid to be filtered is sent into each filter chamber, and the solid and liquid are sep...

AI Technical Summary

Problems solved by technology

In the process of pressing the filter, there is a problem that the filter residue blocks the filter cloth and affects the pressing of the filter. For this reason, Patent Document 1 proposes a filter press, which is provided with a spring between the filter cloth and the filter plate and can rotate The unique push rod structure, the joint action of the spring and the push rod makes the relative movement between the filter cloth and the filter plate possible, and to a certain extent avoids the situation that the filter holes on the filter cloth are blocked by fixed particles. However, due to There is a spring structure, so the structure of the push rod cannot completely cover the entire filter cloth, and because the longitudinal section area of ​​the push rod gradually decreases toward the side of the filter cloth, the end of the push rod away from the filter plate is inverted Rounded corners, therefore, the push rod is not a flexible structure, and the filter cloth may be damaged by cutting or other damage during the rotation process. The material liquid passes through the feed port and drives the fan blades to rotate. At the beginning of flushing, the fan blades rotate faster because the filter chamber is not filled with liquid, but after the liquid is filled, the liquid passing through the feed port will become less Or the flow is slow, and at this time, the fan blade may rotate slowly or cannot rotate, and the push rod at this time may not rotate. Therefore, there is a problem that the filter cloth and the filter plate cannot be relatively separated and bonded. Case

Another example is patent document 2, which discloses a high-efficiency box-type filter press with dynamic water circulation. This filter press takes into account the sludge deposition in the sewage during the press filtration process, resulting in uneven distribution of sludge concentration inside the sewage, increasing the In the case of the pressure filter load of the filter press, an additional circulation pump is installed, which is used to suck the sewage at the bottom into the circulation pump, and then input the sucked sewage from the top of the container, so that the whole sewage can circulate , so that no deposition will occur, but this structure further increases the cost of the filter press due to the additional circulation pump, and because the box is a sealed structure, only the tail is provided with a mud discharge port 10, therefore, Its filter press efficiency is low, and the press filter effect is not ideal; another example is Patent Document 3, which discloses an intelligent fully hydraulic deep dehydration automatic filter press, which is provided with a small filter between the left and right plate frames of the plate frame. The oil cylinder uses a small oil cylinder to replace the traditional spring to increase the volume of the filter chamber through the small oil cylinder before pressing the filter. Relying on the cooperation between the small oil cylinder and the main oil cylinder to reduce the filter chamber, the reliability of the system is improved, but it is on the filter cloth. When the sludge is processed, an additional blanking mechanism is set up, and the separation of the mud cake from the filter cloth is realized by the vibration motor in the shaking blanking mechanism, which requires more energy.

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