Distillation type seawater desalination device

Abstract

The invention provides a distillation type seawater desalination device, and belongs to the technical field of seawater desalination equipment. The device comprises a heat collection cover, a heat insulation cover, a heated cover and a water collection tank, the heat insulation cover is located on the inner side of the heat collection cover, the heated cover is located on the inner side of the heat insulation cover, the heat insulation cover is fixedly connected with the heated cover, a volatilization cavity is formed between the heat insulation cover and the heated cover, the outer edge of the heat collection cover is fixedly connected with a tapered separating cylinder, the separating cylinder is tapered with an upper end diameter smaller than the lower end diameter, a heat preservationcylinder is fixedly connected to the outer edge of the heat insulation cover, a plurality of breathing holes are formed in the circumferential face of the heat preservation cylinder, a filling base isconnected to the lower end of the heat preservation cylinder, a plurality of biconvex lenses are arranged on the heat collection cover, the biconvex lenses are lenses, the heat collection cover is made of transparent materials, the heat insulation cover is made of light-permeable materials from outside to inside, and the biconvex mirror is focused on the outer wall of the heated cover after beingirradiated by sunlight. The seawater desalination device has the advantages that seawater can be efficiently desalinated in a maintenance-free manner and the like.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination equipment, and relates to a distillation type seawater desalination device. Background technique [0002] Seawater desalination equipment is generally divided into distillation type, seawater freezing type, electrodialysis type, reverse osmosis type, and ammonium carbonate ion exchange type. The equipment occupies a large space and the equipment cost is also large. [0003] The Chinese patent with the patent number [CN200910022145.0] discloses a solar seawater desalination device, which collects sunlight through a convex lens. The seawater is led into the sump, and the sunlight projected on the surface of each convex lens is respectively focused on the seawater liquid surface in the sump. The top of the crown-shaped solar collector is connected to the condensing heat exchanger through a communication tube to evaporate the sump. The water vapor is diverted to the condensing heat exc...

AI Technical Summary

Problems solved by technology

In this way, the problem of energy required for desalination of seawater is solved, but the scheme has the following defects: 1. The heat is collected to the water surface of the sump through the convex lens, and the volume of the sump is large and communicated with seawater, although the sump of the sump The upper surface can be heated, but the heat exchange of seawater in the sump will inevitably cause the water temperature in the sump to "moderate", so that the water temperature in the sump is low, and the water vapor that can be formed is limited. In addition, the outlet channel of the water vapor needs to be upward first. , then downward, and then drained into the condenser, so that the temperature of the water vapor drops rapidly during the upward process, causing the water vapor to condense and return, which greatly affects the "effective acquisition" of water vapor; It means that the supply of seawater in the sump can only go in and out. In other words, the salts such as magnesium chloride and sodium chloride in the sump cannot be discharged out of the sump, resulting in a gradual increase in the concentration of non-evaporable substances in the sump. Not only does it require frequent maintenance to prevent the sediment from clogging the water supply pipe, but it will also make the concentration of pure water in the sump lower and lower, the desalination efficiency will decrease rapidly, and the quality of the desalinated water will gradually deteriorate. The function of continuous desalination of seawater cannot be achieved. Although it is equipped with a drainage pipe to replace the seawater in the sump, the maintenance cost is high, and the desalination quality and desalination efficiency cannot be guaranteed to be constant; 3. The device cannot be used directly in seawater , it is necessary to place a platform for easy maintenance, and also need air pumps, water pumps, etc. to drive the flow of water vapor and the supply of sea water

Images