Evaporative cooler

Abstract

The invention discloses an evaporative cooler in the technical field of chemical equipment. The evaporative cooler comprises a spray device, wherein an evaporation device is arranged on the bottom part of the spray device; a conical liquid receiving tank is arranged on the bottom part of the evaporation device; an air inlet is formed in a tangential direction of an outer wall of the spray device; a liquidometer is inserted at one side of the upper part of an outer wall of the conical liquid receiving tank; an air outlet is formed in the other side of the upper part of the outer wall of the conical liquid receiving tank; a material enters an overhead tank through the switchover of a circulating pump and a drain pipe, and is subjected to powder-spraying and drying treatment through a high-pressure pump; a slurry with lower concentration enters into the device through a return pipe so as to be evaporated and dehydrated; a sieve plate is cleaned under the cooperative work of a hairbrush, an adjustable-speed motor, an electric telescopic rod, a stepping motor, a base plate and a hydraulic cylinder, so that the blockage is avoided. The device is simple in structure and convenient to use, waste heat in phosphate production is utilized for achieving the effects on heating the slurry, evaporating part of moisture, and improving sprayed powder concentration.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to an evaporative cooler. Background technique [0002] Phosphate is one of the natural components of almost all foods. It is widely used in food processing as an important food ingredient and functional additive. The naturally occurring phosphate is phosphate rock (containing calcium phosphate), which reacts with phosphate rock with sulfuric acid , to generate calcium dihydrogen phosphate and calcium sulfate that can be absorbed by plants, and can produce phosphate. With the development of food processing technology, the consumption of phosphate is also increasing year by year. In the current domestic phosphate production, the waste heat of exhaust gas is all Through the water film dust collector, after one or more stages of spraying, the purpose of purifying the exhaust gas and lowering the temperature will be achieved, which will cause waste of waste heat and reduce th...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an evaporative cooler to solve the problem that a kind of waste heat of phosphate is urgently needed to make full use of the waste heat of phosphate in the production proposed in the above-mentioned background technology, so as to heat the feed slurry, evaporate part of the water, and increase the powder spraying concentration.

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