Opening and closing self-locking pressing mechanism

Abstract

The invention relates to the field of solid-liquid separation, in particular to a pressing mechanism of a vertical automatic filter press. Functions such as pulling open, closing, pressing, locking and the like of the filter plate of the traditional vertical automatic filter press are respectively completed by adopting multiple groups of cylinders. The pressing mechanism has the defects of complex structure, high cost, high frequency of failures, large difficulty of maintenance works, long time, influence on production, and the like. The invention provides an opening and closing self-locking pressing mechanism directly dragged by using a motor, and functions of pulling the filter plate open, closing the filter plate, pressing the filter plate, self-locking for pressure maintenance, rapidly opening and closing and the like of the opening and closing self-locking pressing mechanism are integrated into a whole. The opening and closing self-locking pressing mechanism is matched with high and new technical products such as a frequency converter motor, a PLC (Programmable Logic Controller), a touch screen, a frequency converter, a coder and the like, and executes a digital closed-loop automatic control. The invention has the advantages of simple, compact and reasonable structure, high efficiency, energy saving, less failure factors, stable and reliable work, low cost, durability, convenience for operation and use, high operability and the like, is beneficial to popularization, promotion and application of the vertical automatic filter press, and fully develops the special advantages.

Description

technical field [0001] The invention relates to a filter press for suspension filtration, in particular to a compacting mechanism of a vertical automatic filter press. Background technique [0002] The existing vertical filter press has a variety of structural methods for pulling the filter plate, closing the filter plate, compressing the filter plate, and maintaining the pressure after compression, one of which is completed by a hydraulic cylinder located at the bottom or top. Its disadvantage is that it takes up too much height and space and needs to increase the height of the factory building; the oil pump needs to be used to supplement pressure intermittently for pressure maintenance, and even continuous pressure supplement when the seal oil leakage is serious, which consumes a lot of energy. An improved way is completed with 4 hydraulic cylinders located on both sides of the filter plate, which overcomes the above-mentioned shortcoming of excessive height, but the probl...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it takes up too much space and needs to increase the height of the factory building; the pressure maintenance needs to be supplemented by an oil pump intermittently, and when the oil leakage of the seal is serious, even continuous pressure supplementation will consume a lot of energy.

An improved method is completed with 4 hydraulic cylinders located on both sides of the filter plate, which overcomes the above-mentioned shortcomings of excessive height, but the problem of maintaining pressure still exists

Another way to improve is to add a set of positioning pins driven by an oil cylinder to lock the position of the filter plate. The disadvantage is that the locked position cannot be adjusted, the sealing effect of the filter plate is difficult to guarantee, and the phenomenon of material leakage or even spraying often occurs

There are other hydraulic transmission methods with complex structures, and there are also defects such as complex hydraulic system structure, high failure rate, heavy maintenance workload, and low operating rate.

Images