Variable-capacitance plate frame dehydration device for sludge

Abstract

The invention provides a variable-capacitance plate frame dehydration device for sludge. The variable-capacitance plate frame dehydration device comprises a support and two cross beams, wherein the two cross beams are propped on the support; a hydraulic main oil cylinder is mounted on the support; a push plate and a stop plate are arranged between the two cross beams; a plurality of plate frames are arranged between the push plate and the stop plate; each plate frame comprises a middle plate, a filter plate and a filter frame; the middle plates are directly connected with the filter plate; a plurality of hydraulic auxiliary oil cylinders are arranged at the periphery of the middle plate; the middle plates are connected with the filter frames through the hydraulic auxiliary oil cylinders; the filter plates are in clearance fit with the filter frames; a filter chamber is formed in a space defined by the filter plates and the filter frames; a piece of filter cloth is arranged in the filter chamber. By using the variable-capacitance plate frame dehydration device for the sludge, the problem of deformation of the filter plates is solved while the filter-pressing working efficiency can be improved at the same time; meanwhile, the device has the characteristic of small addition amount of chemical conditioners and the like; the dehydrated sludge can meet the requirements on resource utilization such as incineration, and utilization of construction materials.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a variable capacity plate frame dewatering device for sludge. Background technique [0002] With the rapid development of urban sewage treatment in my country, the number of sewage treatment plants is increasing, and the amount of sludge generated is also increasing. According to statistics, at present, the annual sludge production of urban sewage treatment plants in my country has reached 30 million tons (water content 80%), and will reach about 50 million tons by the end of the "Twelfth Five-Year Plan". Sludge reduction is an important link in sludge treatment and disposal, and it is of great significance to reduce the cost of sludge treatment and disposal. [0003] Sludge mechanical dewatering is the most commonly used reduction method. At present, in the sludge dewatering methods of urban sewage treatment plants in my country, belt filter presse...

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Problems solved by technology

[0005] The object of the present invention is to provide a sludge variable capacity plate and frame dewatering device to solve the problem of low work efficiency and plate and frame deformation caused by the setting of springs in the prior art. The problem of deformation of the plate and frame has been solved, and the purpose of improving the working efficiency of the filter press has been realized

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