Rapid dehydration and drying device for continuous feeding and discharging of sand and fine stones for building construction

Abstract

The invention discloses a rapid dehydration and drying device for continuously feeding and discharging sand and fine stones for building construction, which comprises a dehydration tank, a sealing wheel, a conveyor belt and a vacuum pump. The dehydration tank includes a tank body and two sealing wheels arranged on the wall surface of the tank body The installation platform and the circulation interface, the sealing wheel installation platform is installed with the sealing wheel, the conveyor belt passes through the two sealing wheel installation platforms and is squeezed by the sealing wheel inside, and the vacuum pump is connected with the dehydration tank. There is a heater inside the dehydration tank; the vacuum pump includes a pump body, an inlet valve, an exhaust valve, a trap, and an exhaust pipe. The vacuum chamber is connected to the dehydration tank through pipelines and the inlet valve and exhaust valve are set on the two pipelines. The exhaust pipe behind the exhaust valve has two branches connected to the dehydration tank and the external atmosphere respectively. On-off valves are installed on the two branches respectively. The bottom of the vacuum chamber is provided with a drainage pipeline leading to the outside and a drain valve is installed on it. .

Description

technical field [0001] The invention relates to the field of drying devices, in particular to a rapid dehydration and drying device for continuously feeding and discharging sand and fine stones for building construction. Background technique [0002] Construction sand and gravel are finely crushed sand and fine stones with a diameter of a few tenths to several millimeters. During production, natural stones and sand and gravel are mechanically crushed and other steps are taken. The finished sand and gravel are put into the market as construction materials for sale. [0003] During the production or stacking of sand and gravel, some water may be mixed in, and the water increases the weight of the sand and gravel. If the sand and gravel are directly transported, the transportation cost will be higher. Therefore, the tailing of the sand and gravel production process is often dehydration. drying part. [0004] In the prior art, sand and gravel are usually dried by means of dryin...

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Problems solved by technology

[0004] In the prior art, sand and gravel are usually dried by means of drying. The sand and gravel are put into the drying box for a long time drying operation. Such a dehydration device consumes a lot of energy because the high temperature in the drying box must be maintained for a long time. Moreover, moisture evaporates and accumulates in the drying box, and the air in the drying box needs to be replaced continuously for dehumidification. When the air in the drying box is replaced with fresh air due to dehumidification needs, it will take away a lot of heat and cause energy waste

Moreover, the progress of drying measures through drying is slow, so the material needs to stay in the drying box for a long time. If it is made in the form of a conveyor belt, either the conveyor belt runs very slowly, or the drying box will do it well. Larger, in short, the efficiency of drying treatment is not high

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