Automatic filter-pressing dehydration device and working method thereof

Abstract

The invention relates to an automatic filter-pressing dehydration device and a working method thereof and belongs to the technical field of environment-friendly squeezing. The automatic filter-pressing dehydration device comprises one or more than one filter-pressing unit and a bottom filter-pressing box, wherein the filter-pressing unit is arranged above the bottom filter-pressing box and comprises a filter-pressing plate and a filter-pressing frame. According to the invention, the filter-pressing plate filter-presses moisture-containing materials in the filter-pressing frame in the manner of piston motion, which is characterized in that the filter-pressing plate has high filter-pressing homogeneous degree and little deformation abrasion; materials are fed from the side wall of the filter-pressing plate, which is characterized in that a pressure-bearing strength of the filter-pressing frame is promoted and the successful implementation of high-pressure filter-pressing is ensured; high-pressure gas is blown into a filter-pressing cavity from through holes on the bottom surface and the top surface of the filter-pressing cavity, thereby the filter-pressed materials can be unloaded easily; grooves are formed on the bottom surface of the filter-pressing plate and the bottom surface of a bottom filter-pressing unit, so that the filter-pressed liquid is prevented from returning to the squeezed dry materials in unloading process and the filter-pressing effect is maintained.

Description

technical field [0001] The invention relates to an automatic filter press dehydration device and a working method thereof, belonging to the technical field of environmental protection pressing. Background technique [0002] The high moisture content of sludge is a major factor affecting sludge disposal and recycling. Nowadays, low-cost technologies are often used in China to dehydrate sludge with a moisture content of about 80%. The methods for deep dehydration of sludge mainly include: thermal drying: high investment and high energy consumption; microwave drying: high investment and high energy consumption; solar drying: low operating cost and greatly affected by weather; plate diaphragm dehydration: high maintenance cost , It is only suitable for thickened sludge with a moisture content above 90%. The plate-and-frame filter press used in the above-mentioned plate-type membrane dehydration method is widely used because of its advantages of batch pressing. However, the pla...

AI Technical Summary

Problems solved by technology

However, the plate and frame filter presses used in the market today have the following disadvantages: 1. The scope of application is narrow: it can only press materials with a moisture content of more than 90%; the equipment is huge, and the size of the equipment cannot be adjusted according to the production scale; 2. The filter membrane is frequently blocked; 3. The feed port is single, and the filter chambers of the filter press unit affect each other. If the feed port is blocked during production, it will affect the work of the entire production line, resulting in production stagnation and cumbersome maintenance; 4. The filter press unit The sealing effect of the filter is poor, the equipment vibrates strongly, and the material flows out seriously, which affects the filter press effect; 5. The degree of automation is low, and the working process cannot be automatically adjusted according to real-time production parameters; manual misoperation can easily lead to equipment damage; 6. Single guide column on both sides The stability of the pressing operation is poor, and the self-damage of the equipment is high; 7. The independent lifting effect of the filter press unit is poor, which is not conducive to unloading

Chinese patent CN201505474 discloses a vertical filter press. The invention purpose of this patent is to solve the unstable problems such as vibration and leakage of the filter press, but the relevant technical solutions are not clearly described in the specification. The patent is a diaphragm Type filter press, high maintenance cost, low pressure, low filter cake degree after filter press, can not meet the requirements of post-processing and utilization, a problem with a filter unit affects the work of the entire production line

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