A high-pressure flat belt dehydration device

Abstract

The invention discloses a high-pressure plane belt dewatering device, which comprises an upper mud-pressing belt, a lower mud-pressing belt and a filter cloth system for covering sludge. The upper mud-pressing belt and the lower mud-pressing belt are arranged obliquely to form The filter press zone where the distance between the mud belt and the lower pressure mud belt gradually decreases. The pressure of the present invention is high, up to 6 MPa, which is 50%-100% higher than that of the prior art; the dryness of the filter press is high, compared with the same kind of sludge, the dryness of the filter press is more than 20% higher; the operating energy consumption is low, According to the absolute dry sludge volume per unit, under the pressure filtration to the same dryness, the energy saving can be 30%-50%; the filtration process is continuous, saving transportation equipment and energy consumption.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a high-pressure flat belt dewatering device. Background technique [0002] The resource utilization of sludge is the main direction to solve the environmental hazards of sludge solid waste. Among various sludge resource utilization technologies, sludge dehydration is a common technology. In the process of sludge dehydration, the dehydration equipment Selection is the key to sludge dewatering production. The sludge dewatering equipment mainly used in the existing production includes plate and frame dewatering machines using filter press methods, van dewatering machines, belt sludge dewatering machines, and centrifugal dewatering machines using centrifugal dewatering methods. . [0003] The centrifugal dehydrator has the advantages of small footprint, high degree of automation, and large single-machine output, but has the disadvantages of low dehydration dryness and high power cons...

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Problems solved by technology

[0003] The centrifugal dehydrator has the advantages of small footprint, high degree of automation, and large single-machine output, but has the disadvantages of low dehydration dryness and high power consumption; the plate-frame or box-type dehydrator can conveniently increase the pressure and time of the filter press. Sludge has strong adaptability and high dehydration dryness, but due to its intermittent production, under the condition of maintaining a long filter press time, the output is low, the filter cloth is difficult to clean, and many operators are required. Application of equipment in sludge dewatering

[0004] The belt filter press uses the tension and pressure of the filter cloth to exert pressure on the sludge on the filter cloth to dehydrate the sludge. Due to the advantages of continuous production and low power consumption, the belt filter press has become a relatively popular choice for sludge dewatering. There are a lot of equipment, but the ordinary belt filter press does not have a special mechanism for exerting pressure on the sludge, so the pressure on the sludge is relatively low. Generally, it can only increase the dryness of the sludge to 10%-30%. The filter dryness is low, and it is difficult to meet the current requirements for sludge dewatering. Therefore, how to increase the pressure of the belt filter press and improve the filter dryness is of great significance to sludge production.

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