CN210855362U

CN210855362U - Portable solar membrane distillation seawater desalination device

Info

Publication number: CN210855362U
Application number: CN201921759052.1U
Authority: CN
Inventors: 刘琦; 王海博; 王轩轩; 韩晓飞; 田瑞
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-26
Anticipated expiration: 2029-10-18

Abstract

The utility model provides a portable solar membrane distillation sea water desalination device, include: fresh water tank, hydrophobic membrane, sea water tank, top cap; wherein, the fresh water tank is arranged at the lower part of the seawater tank, a hydrophobic membrane is arranged between a fresh water tank in the fresh water tank and a seawater tank in the seawater tank, and a water outlet communicated with the fresh water tank is arranged on the fresh water tank; the top cover covers on sea water tank upper portion, and the top cover upper surface is equipped with the heat-absorbing medium, and the top cover lower surface is equipped with multirow copper sheet, and multirow copper sheet is arranged in sea water tank's sea water groove. The utility model relates to a portable solar membrane distillation sea water desalination device, than conventional sea water desalination device, utilized this renewable energy of solar energy, and the lower and stable characteristics of sea water temperature, combine together with membrane distillation technical principle, do not consume and carry out sea water desalination under the prerequisite of any energy, can provide the guarantee for the drinking water demand of the resident that is in sea island area life for a long time, it is convenient that the fresh water demand of beating the fish is provided for fisherman going out to sea.

Description

Portable solar membrane distillation seawater desalination device

Technical Field

The utility model mainly relates to the technical field of solar heat utilization and seawater desalination, in particular to a portable solar membrane distillation seawater desalination device.

Background

The drinking water of residents living in island areas for a long time is an important problem to be solved. At present, the use requirement of fresh water of people is generally met by building seawater desalination equipment in island regions. However, the solar seawater desalination device has a large demand on energy at the present stage, and even the energy consumption required by seawater desalination is far higher than the value of seawater desalination; moreover, the problem of fresh water demand when fishermen go to sea and make fish cannot be fundamentally solved.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model discloses combine prior art, from practical application, provide a portable solar energy membrane distillation sea water desalination device, can provide the guarantee for being in the resident's of island area life drinking water demand for a long time, it is convenient for fisherman to go out the sea to beat the fresh water demand of fish.

The technical scheme of the utility model as follows:

a portable solar membrane distillation seawater desalination device comprises: fresh water tank, hydrophobic membrane, sea water tank, top cap;

the fresh water tank is arranged at the lower part of the seawater tank, a hydrophobic membrane is arranged between a fresh water tank in the fresh water tank and a seawater tank in the seawater tank, and a water outlet communicated with the fresh water tank is arranged on the fresh water tank;

the top cover covers on sea water tank upper portion, and the top cover upper surface is equipped with the heat-absorbing medium, and the top cover lower surface is equipped with multirow copper sheet, multirow copper sheet is arranged in sea water tank's sea water groove.

Further, a support is arranged in the fresh water tank, and the hydrophobic membrane is supported by the support.

Furthermore, the support is a cross-shaped support, the fresh water tank is divided into four parts by the cross-shaped support, and the parts are communicated with each other through small holes formed in the side wall of the cross-shaped support.

Furthermore, the whole fresh water tank or the bottom plate of the fresh water tank adopts a copper plate structure.

Further, the hydrophobic membrane is a PTFE hydrophobic membrane.

Furthermore, the top cover is detachably connected with the seawater tank.

Furthermore, the water outlet is connected with a containing bottle, and the containing bottle is provided with an exhaust hole.

The utility model has the advantages that:

compared with the conventional seawater desalination device, the portable solar membrane distillation seawater desalination device utilizes the renewable energy of solar energy and the characteristics of low and stable seawater temperature, is combined with the technical principle of membrane distillation, and desalts seawater on the premise of not consuming any energy; the sea level has fluctuation, so that the seawater in the device can be uniformly mixed, and the seawater distillation amount can be increased; meanwhile, the device is simple in structure, high in efficiency, convenient to carry and low in cost, guarantees are provided for the drinking water requirements of residents living in island regions for a long time, convenience is provided for the freshwater requirements of fishermen for sea going and fishing, and the device has a wide application prospect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a three-dimensional relieving schematic view of the utility model after the storage bottle is removed;

FIG. 3 is a schematic view of the structure of the utility model in a split state;

FIG. 4 is a schematic structural view of the fresh water tank of the present invention;

fig. 5 is a schematic diagram of the top cover structure of the present invention.

Reference numerals shown in the drawings:

1. a fresh water tank; 11. a water outlet; 12. a fresh water tank; 13. a support; 14. a small hole;

2. a sea water tank; 21. a seawater tank;

3. a top cover; 31. a heat absorbing medium; 32. a copper sheet;

4. a water pipe;

5. a storage bottle;

6. an exhaust pipe;

7. a hydrophobic membrane.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

As shown in fig. 1-5, for the utility model provides a portable solar membrane distillation seawater desalination device, it mainly includes: the device comprises a fresh water tank 1, a hydrophobic membrane 7, a seawater tank 2 and a top cover 3; the fresh water tank 1 is arranged at the lower part of the sea water tank 2, a hydrophobic membrane 7 is arranged between a fresh water tank 12 in the fresh water tank 1 and a sea water tank 21 in the sea water tank 2, and a water outlet 11 communicated with the fresh water tank 12 is arranged on the fresh water tank 1; the top cover 3 covers the upper portion of the seawater tank 2, the upper surface of the top cover 3 is provided with a heat absorbing medium 31, the lower surface of the top cover 3 is provided with a plurality of rows of copper sheets 32, and the plurality of rows of copper sheets 32 are arranged in the seawater groove 21 of the seawater tank 2.

The device is mainly divided into an upper part, a middle part and a lower part, wherein the top cover 3 of the upper part is an overwater part, a heat absorbing medium 21 coated on the upper surface of the top cover plays a role of absorbing sunlight, and a plurality of rows of copper sheets 32 contacted with seawater on the lower surface of the top cover heat the seawater in the seawater tank 21. The middle part is a seawater tank 21 used for storing seawater to be desalinated, and the lower part is a fresh water tank 12 of a hydrophobic membrane 7 used for collecting desalinated water, and the desalinated water flows into the containing bottle 5 through the water outlet 11 and the water pipe 5. The fresh water tank 1, the sea water tank 2 and the top cover 3 can be connected and sealed through screws.

In the present invention, the hydrophobic membrane 7 is a PTFE hydrophobic membrane. The principle that the hydrophobic membrane 7 can realize seawater desalination is as follows: in general, when membrane distillation is performed using a hydrophobic membrane, the hot side of the membrane (the side in contact with the seawater tank 21) is in direct contact with the solution to be treated (seawater), and the other side of the membrane is the cold side. Fluids on two sides of the membrane are at different temperatures, so that steam pressure difference can be generated, water in a solution on the hot side is promoted to be evaporated on the surface of the membrane to form steam, the steam is radiated to the cold side through the membrane hole under the action of the pressure difference to be condensed (the hydrophobic membrane only allows the steam to permeate), and the steam falls down, so that the aim of separating the liquid-phase aqueous solution from the gas-phase water is fulfilled. Meanwhile, the sea level has fluctuation, which is beneficial to the uniform mixing of the seawater in the device and can improve the distillation quantity of the seawater.

The utility model discloses during the use, directly place the device in sea water, because the buoyancy of sea water is used, device itself is not heavy, and the device can float in sea level. In order to achieve better effect of absorbing solar energy, the device is preferably placed in the sea at an inclination angle, and the optimal inclination angle of the device is the local geographical latitude plus 3 degrees. The seawater in the middle seawater tank 21 of the device is filled by adopting a manual filling method by opening the detachable top cover 3 and fully covering the top cover 3. The water outlet 11 below the device is connected with a sealed containing bottle 5 and placed in seawater, and the containing bottle 5 is provided with an exhaust hole and is communicated with atmosphere on the sea surface by inserting a long exhaust pipe 6. After the device is exposed to the sun, the device is taken out of the seawater, the containing bottle 5 is taken down, and the desalinated water is obtained in the containing bottle 5 and can be drunk or used as domestic water.

As preferred, the utility model discloses in, be equipped with support 13 in the fresh water tank 1, hydrophobic membrane 7 supports through support 13, and is further, support 13 adopts cross support, and cross support cuts apart fresh water tank 12 into four bibliographic categories branch, and the aperture 14 UNICOM that sets up on the cross support lateral wall between each part makes things convenient for the desalination to flow out from delivery port 11. The support of the hydrophobic membrane 7 can be very conveniently realized by adopting the cross-shaped bracket.

As preferred, the utility model discloses in, the whole or fresh water tank 1's of fresh water tank 1 bottom plate adopts the copper structure, and the copper is used for the heat transfer, can play heat exchange efficiency, and it contacts with the sea water, plays the cooling action.

Compared with the conventional seawater desalination device, the portable solar membrane distillation seawater desalination device related by the embodiment utilizes renewable energy of solar energy and the characteristics of low and stable seawater temperature, is combined with the technical principle of membrane distillation, desalinates seawater on the premise of not consuming any energy, has wave sea level, is favorable for uniformly mixing seawater in the device, and can improve seawater distillation capacity. The device has the advantages of simple structure, portability and lower cost, provides guarantee for the drinking water demand of residents living in island areas for a long time, and provides convenience for the freshwater demand of fishermen for fishing at sea.

Claims

1. A portable solar membrane distillation seawater desalination device is characterized by comprising: a fresh water tank (1), a hydrophobic membrane (7), a seawater tank (2) and a top cover (3);

wherein the fresh water tank (1) is arranged at the lower part of the seawater tank (2), a hydrophobic membrane (7) is arranged between a fresh water tank (12) in the fresh water tank (1) and a seawater tank (21) in the seawater tank (2), and a water outlet (11) communicated with the fresh water tank (12) is arranged on the fresh water tank (1);

the seawater tank is characterized in that the top cover (3) covers the upper portion of the seawater tank (2), a heat absorbing medium (31) is arranged on the upper surface of the top cover (3), a plurality of rows of copper sheets (32) are arranged on the lower surface of the top cover (3), and the plurality of rows of copper sheets (32) are arranged in a seawater groove (21) of the seawater tank (2).

2. The portable solar membrane distillation seawater desalination device as defined in claim 1, wherein a support (13) is arranged in the fresh water tank (1), and the hydrophobic membrane (7) is supported by the support (13).

3. The portable solar membrane distillation seawater desalination device as defined in claim 2, wherein the support (13) is a cross-shaped support, the cross-shaped support divides the fresh water tank (12) into four parts, and the parts are communicated with each other through small holes (14) arranged on the side wall of the cross-shaped support.

4. The portable solar membrane distillation seawater desalination device as claimed in claim 1, wherein the whole fresh water tank (1) or the bottom plate of the fresh water tank (1) adopts a copper plate structure.

5. The portable solar membrane distillation seawater desalination device as defined in claim 1, wherein the hydrophobic membrane (7) is PTFE hydrophobic membrane.

6. A portable solar membrane distillation seawater desalination plant as claimed in claim 1 wherein the top cover (3) is removably connected to the seawater tank (2).

7. The portable solar membrane distillation seawater desalination device as defined in any one of claims 1 to 6, wherein the water outlet (11) is connected with a receiving bottle (5), and the receiving bottle (5) is provided with an exhaust hole.