CN216764375U

CN216764375U - Sea floating type unpowered membrane distillation seawater desalination device

Info

Publication number: CN216764375U
Application number: CN202220153098.4U
Authority: CN
Inventors: 葛培玉; 杨明
Original assignee: Shanghai Fengdu Water Purification Engineering Co ltd
Current assignee: Shanghai Fengdu Water Purification Engineering Co ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-17
Anticipated expiration: 2032-01-20

Abstract

The utility model provides a seawater desalination device which uses solar energy and a membrane distillation principle to desalinate seawater and can float on the sea without power consumption. In the daytime, sunlight irradiates the seawater at the bottom of the shell through the upper transparent shell, water vapor evaporated from the seawater at the bottom passes through the breathable film, and water molecules in the water vapor pass through the breathable film and are blocked by the salt envelope. The vapor permeating the membrane is gathered on the inner surface of the upper shell and condensed to form water drops which flow downwards, and the water drops are collected by the annular water collecting pipe and flow into the water collecting bottle, so that fresh water can be absorbed from the water collecting bottle through the water absorbing pipe.

Description

Sea floating type unpowered membrane distillation seawater desalination device

Technical Field

The utility model belongs to the technical field of seawater desalination, and particularly relates to a sea floating type unpowered membrane distillation seawater desalination device.

Background

The existing seawater desalination treatment technology and equipment basically adopt a high-pressure reverse osmosis membrane technology, and need huge equipment and power consumption, and need to provide electric power and plant equipment. The device is not suitable for scattered floating construction on the sea, and cannot meet the requirements of supplying fresh water on small islands on the sea, offshore operation platforms and the like and the requirements of emergency escape drinking water for people falling into water in an offshore accident.

Therefore, the seawater desalination device which can float on the sea and has no power consumption is designed by utilizing the solar energy and the membrane distillation principle.

Disclosure of Invention

The utility model aims to provide a sea floating type unpowered membrane distillation sea water desalinator which can desalinate sea water by utilizing solar energy and a membrane distillation principle and can float on the sea surface. The utility model adopts the miniaturization device, and can dispersedly float on the sea surface. The device can be arranged in a centralized manner to supply fresh water to meet the requirement of the island and the offshore operation platform on large fresh water quantity and water use, and can also be a small-sized single device to meet the requirement of people falling into the water to drink fresh water or the escape lifeboat to drink a small amount of fresh water.

The utility model provides a sea floating type unpowered membrane distillation seawater desalinator, which consists of an upper shell 1, a lower shell 4, an annular water collecting pipe 2, a ventilated membrane 3, a heavy weight 5, a water collecting bottle 7 and a water inlet pipe 6, wherein: the upper shell 1 and the lower shell 4 form the whole shell, a breathable film 3 is arranged between the upper shell 1 and the lower shell 4, a heavy weight 5 is arranged at the bottom in the lower shell 4 to keep a part of the shell immersed under the sea surface, one end of the lower shell 4 is provided with a seawater inlet pipe 6, and seawater outside the shell enters the lower shell 4 through the seawater inlet pipe 6; an annular water collecting pipe 2 is arranged in the upper shell 1, the annular water collecting pipe 2 is connected with a water collecting bottle 7, and permeated water vapor is condensed on the inner surface of the upper shell 1 and then collected through the annular water collecting pipe 2.

In the present invention, the fresh water stored in the collecting bottle 7 can be sucked from the collecting bottle 7 through the suction pipe 8.

In the utility model, the upper shell 1 is made of transparent material, the seawater at the bottom of the lower shell is evaporated after the sunlight irradiates, the generated water vapor penetrates through the breathable film 3, and the water molecules pass through the breathable film 3 and the salt is trapped.

The utility model has the beneficial effects that:

the utility model only uses the sunlight irradiation in the daytime to heat and evaporate the seawater in the shell to generate steam, a layer of breathable film is arranged in the shell, and the breathable film only allows steam molecules to pass through but prevents salt from passing through. The permeated water vapor is gathered on the inner surface of the shell, condensed into water drops at night or at low temperature, and collected and stored in the container through the water collecting pipe, the process of preparing fresh water only utilizes sunlight without other power, the device can float on the sea surface, can be arranged in a centralized and connected manner, and can also be arranged singly or prevented from meeting the drinking water requirement of people falling into water in the sea in case of accidents on the life raft.

Drawings

FIG. 1 is a schematic diagram of a floating unpowered seawater desalination plant of the present invention:

reference numbers in the figures: 1 is an upper shell, 2 is an annular water collecting pipe, 3 is a breathable film, 4 is a lower shell, 5 is a heavy weight, 6 is a water inlet pipe, 7 is a water collecting bottle, and 8 is a water suction pipe.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.

Example 1: as shown in the figure, the utility model provides a marine floating type unpowered seawater desalination device which comprises an upper shell 1, an annular water collecting pipe 2, a breathable film 3, a lower shell 4, a heavy weight 5, a water inlet pipe 6, a water collecting bottle 7 and a water suction pipe 8, wherein the breathable film 3 is arranged between the upper shell 1 and the lower shell 4, the heavy weight 5 is arranged at the bottom of the lower shell, the water inlet pipe 6 is arranged at the lower part of the shell to enable external seawater to enter the lower shell, the annular water collecting pipe 2 is arranged at the upper part of the shell and used for collecting fresh water condensed on the surface of the upper shell, the annular water collecting pipe 2 is connected with the water collecting bottle 7, the water collecting bottle 7 is used for storing fresh water, and the fresh water can be sucked from the water collecting bottle 7 through the water suction pipe 8.

In the present invention, the air permeable membrane 3 is flat or pleated to increase the membrane area.

The working process of the utility model is as follows:

the closed housing floats on the sea surface through a bottom sinker 5, and external seawater enters the lower part of the housing through a water inlet pipe 6. In daytime, sunlight irradiates the seawater at the bottom of the shell through the upper transparent shell 1, water vapor evaporated from the seawater at the bottom passes through the breathable film 3, and water molecules in the water vapor pass through the breathable film 3 and are blocked by the salt film. The water vapour permeating the membrane collects on the inner surface of the upper housing 1 and condenses to form droplets which flow downwards, are collected by the annular collector pipe 2 and flow into the collecting reservoir 7. Fresh water can be sucked from the water collecting bottle 7 through the suction pipe 8.

The floating device can adopt a plurality of connecting pieces to increase the yield of fresh water, and also can adopt a single mode to meet the requirement that a life raft or a person falling into water absorbs a small amount of fresh water.

It should be noted that the foregoing merely illustrates some of the principles of the utility model, since modifications and adaptations of the utility model will readily occur to those skilled in the art. Therefore, it is intended that the present disclosure not be limited to the exact construction and operation illustrated and described, but that all modifications and equivalents that may be resorted to are intended to fall within the scope of the utility model as claimed.

Claims

1. Sea floats unpowered membrane distillation sea water desalination device of formula, by upper portion casing (1), lower part casing (4), annular collector pipe (2), ventilated membrane (3), heavily weigh down (5), collect water bottle (7) and inlet tube (6) and constitute its characterized in that: the whole shell is composed of an upper shell (1) and a lower shell (4), a breathable film (3) is arranged between the upper shell (1) and the lower shell (4), a heavy weight (5) is arranged at the bottom in the lower shell (4) to keep one part of the shell submerged under the sea, one end of the lower shell (4) is provided with a seawater inlet pipe (6), and seawater outside the shell enters the lower shell (4) through the seawater inlet pipe (6); an annular water collecting pipe (2) is arranged in the upper shell (1), the annular water collecting pipe (2) is connected with a water collecting bottle (7), and permeated water vapor is condensed on the inner surface of the upper shell (1) and then collected through the annular water collecting pipe (2).

2. The marine floating unpowered membrane distillation seawater desalination device of claim 1, wherein: fresh water in the water collecting bottle (7) is sucked from the water collecting bottle (7) through the water suction pipe.

3. The marine floating unpowered membrane distillation seawater desalination device of claim 1, wherein: the upper shell (1) is made of transparent materials, seawater at the bottom of the lower shell is irradiated by sunlight to evaporate, generated water vapor penetrates through the breathable film (3), and water molecules pass through the breathable film (3) and salt is trapped.