CN210764429U

CN210764429U - Brackish water desalination device

Info

Publication number: CN210764429U
Application number: CN201921503066.7U
Authority: CN
Inventors: 王胜; 魏永阳; 林云弟; 隋堰峰
Original assignee: Shandong Sunway Saline Alkali Soil Technology Co Ltd
Current assignee: Shandong Sunway Saline Alkali Soil Technology Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-06-16
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses a brackish water desalination device, which comprises an inner frame and an outer frame, wherein the inner frame is arranged inside the outer frame, and the inner frame and the outer frame are both hemispheric; the surface of the inner frame is covered with an inner film, and the surface of the outer frame is covered with an outer film; the spherical top ends of the internal frame and the internal film are provided with a circular hot and wet air outlet, the lower end part of the internal frame is provided with an annular air return hole, and the hot and wet air outlet and the air return hole are opened or closed by a chain block; a circular foundation is arranged right below the inner frame and the outer frame, and a circular pit with the depth of 50cm is arranged inside the foundation; the device provided by the utility model realizes the desalination and recovery of the brackish water by utilizing the day and night temperature difference of the nature; the device does not need any external power supply and a power device; simple structure, low manufacturing cost and is particularly suitable for common families in northwest China.

Description

Brackish water desalination device

Technical Field

The utility model relates to a water treatment technical field, concretely relates to brackish water desalination technical field.

Background

Brackish water is water with alkalinity greater than hardness, which contains a large amount of neutral salts, and has a pH greater than 7. The bitter is mainly caused by that the water level is lower than the sea level due to excessive water consumption, long time or the change of the crust, the seawater flows backwards, and the surface water flows through the saline-alkali soil to form the bitter. It mainly refers to lake water, river water and underground water with the salt content of 1000-. The bitter water in China is mainly distributed in the northwest arid inland areas, the north and the east coastal areas. The bitter salty water contains a lot of heavy metals and harmful impurities, tastes bitter and astringent, is difficult to drink directly, and causes gastrointestinal dysfunction and low immunity after being drunk for a long time. The brackish water in China is mainly distributed in parts of northern areas and east coastal areas, and the population for drinking the brackish water in rural areas reaches more than 4000 million people. Its main components are cations Na, K, Ca2, Mg2, Al3, Fe3, Sr2, and As3 plasma; the anion is Cl-, So42-, Br-, HcO3- (Co32-), F-plasma. In addition, the harm of overproof salts and impurities in the bitter water to human bodies is great, and the root of many endemic diseases lies in drinking water.

Application number CN201810346527.8, application date 2018, 04 and 17, discloses a brackish water desalination device and a brackish water desalination method. The brackish water desalination device comprises an internal circulation structure and an external circulation structure, wherein the internal circulation structure and the external circulation structure form a double-layer structure; the internal circulation structure forms a first water circulation network for desalting the brackish water, and the external circulation structure forms a second water circulation network for desalting the brackish water; the internal circulation structure comprises a solar heat collector which is used for collecting heat in the daytime and storing the heat in the first water circulation network; the brackish water forms desalted water through evaporation and condensation in the circulation process of the first water circulation network and transfers heat to the second water circulation network to realize heat accumulation; and when the night comes, the second water circulation network is condensed to form desalinated water.

The device realizes continuous brackish water distillation day and night, and improves the desalination efficiency by times; and the cost is saved by utilizing natural cold and heat sources; however, this device also has the following disadvantages: the device is provided with a plurality of circulating pumps, the circulating pumps need to be externally connected with a power supply or a generator, and the device has limitation in the use process for some remote areas with deficient electric power; the device has higher manufacturing cost, complex structure and expensive equipment, and is not suitable for being put into use by common families; the prior art obviously has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: aiming at the defects in the prior art, the brackish water desalination device is provided, the brackish water can realize heat storage in the daytime and release heat at night for desalination and recovery by utilizing the day and night temperature difference of nature, the desalination device does not need any external power supply or power device, and the application universality is improved; the device has simple structure and lower manufacturing cost; is particularly suitable for common families in northwest areas of China.

In order to solve the technical problem, the technical scheme of the utility model is that:

a brackish water desalination device comprises an inner frame and an outer frame, wherein the inner frame is arranged inside the outer frame, and the inner frame and the outer frame are both hemispherical; the surface of the inner frame is covered with an inner film, and the surface of the outer frame is covered with an outer film; a round hot and wet air outlet hole is formed in the spherical top ends of the inner frame and the inner membrane; a cover film is arranged above the hot and wet air outlet, an annular air return hole is arranged at the lower end part of the internal frame, and the hot and wet air outlet and the air return hole are opened or closed by a chain block; a circular foundation is arranged right below the inner frame and the outer frame, a circular pit with the depth of 50cm is arranged inside the foundation, an impermeable film is arranged on the surface of the inner wall of the pit, and a black film for absorbing sunlight is arranged on the upper surface of the impermeable film; an annular water collecting tank is correspondingly arranged on the foundation between the inner frame and the outer frame, and a water inlet pipe for supplementing brackish water in the pit penetrates through the water collecting tank.

Further, the inner film and the outer film are high-heat-preservation non-dropping films.

Further, the chain block is arranged at the top of the outer frame.

Furthermore, a first pulley and a second pulley which are fixedly suspended are arranged on the inner side of the external frame, the chain block is provided with a lifting hook which penetrates through the external frame, four first steel wire ropes with equal length are arranged on the lifting hook, the first steel wire ropes bypass the first pulley, one end of each first steel wire rope is connected with the lifting hook of the chain block, and the other end of each first steel wire rope is connected with the first annular steel pipe; the first annular steel pipe is sleeved on the outer side of the top end of the hot and wet air outlet, and the outer side of the cover opening film is fixedly connected with the first annular steel pipe; four second steel wire ropes with equal length are arranged on the lifting hook, one end of each second steel wire rope, which bypasses the second pulley, is connected with the lifting hook of the chain block, and the other end of each second steel wire rope is connected with the second annular steel pipe; the second annular steel pipe is sleeved on the outer side of the lower end part of the inner frame and is further connected with the lower end part of the inner film.

Further, the water collecting tank is provided with a pipeline communicated with the water collecting tank.

Since the technical scheme is used, the beneficial effects of the utility model are that:

the utility model discloses a brackish water desalination device, which comprises an inner frame and an outer frame, wherein the inner frame is arranged inside the outer frame, and the inner frame and the outer frame are both hemispheric; the surface of the inner frame is covered with an inner film, and the surface of the outer frame is covered with an outer film; a round hot and wet air outlet hole is formed in the spherical top ends of the inner frame and the inner membrane; a cover film is arranged above the hot and wet air outlet, an annular air return hole is arranged at the lower end part of the internal frame, and the hot and wet air outlet and the air return hole are opened or closed by a chain block; a circular foundation is arranged right below the inner frame and the outer frame, a circular pit with the depth of 50cm is arranged inside the foundation, an impermeable film is arranged on the surface of the inner wall of the pit, and a black film for absorbing sunlight is arranged on the upper surface of the impermeable film; the utility model provides a brackish water desalination device, can utilize the day and night temperature difference of nature, and the brackish water realizes daytime heat storage, releases heat at night to desalt and recover, and the moisture after the desalination is unified to utilize after gathering; the desalination device does not need any external power supply or power device, thereby improving the application universality; the device has simple structure, simple implementation and lower manufacturing cost; is particularly suitable for common families in northwest areas of China.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the flow of hot humid gas in the present invention;

in the figure, 1-foundation, 2-pit, 3-impermeable membrane, 4-black membrane, 5-inner frame, 6-outer frame, 7-inner membrane, 8-outer membrane, 9-air return hole, 101-first annular steel pipe, 102-second annular steel pipe, 111-first steel wire rope, 112-second steel wire rope, 121-first pulley, 122-second pulley, 13-chain block, 14-hot and wet air outlet hole, 15-cover membrane, 16-water collecting tank, 17-pipeline, 18-water collecting tank and 19-water inlet pipe.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

Examples

As shown in fig. 1 and 2, the present invention provides a brackish water desalination apparatus, comprising an inner frame 5 and an outer frame 6, wherein the inner frame 5 is disposed inside the outer frame 6, and both the inner frame 5 and the outer frame 6 are hemispherical; the surface of the inner frame 5 is covered with an inner film 7, the surface of the outer frame 6 is covered with an outer film 8, and the inner film 7 and the outer film 8 are high-heat-preservation non-drip films; a round hot and wet air outlet hole 14 is formed in the spherical top ends of the inner frame 5 and the inner membrane 7; a circular cover film 15 is arranged above the hot and wet air outlet hole 14, the diameter of the cover film 15 is larger than that of the hot and wet air outlet hole 14, an annular air return hole 9 is arranged at the lower end part of the inner frame 5, the hot and wet air outlet hole 14 and the air return hole 9 are opened or closed by a chain block 13, the chain block 13 is arranged at the central position of the top part of the outer frame 6, the chain block 13 is provided with a lifting hook penetrating through the outer frame 6, four first pulleys 121 and four second pulleys 122 which are fixedly hung are respectively arranged at the inner side of the outer frame 6, four first steel wire ropes 111 with equal length are arranged on the lifting hook, the four first steel wire ropes 111 respectively bypass the four first pulleys 121, one end of the four first steel wire ropes is connected with the lifting hook of the chain block 13, and the other end of the four first steel wire ropes is respectively connected with the first; the first annular steel pipe 101 is sleeved on the outer side of the top end of the hot and wet air outlet hole 14, and the outer side of the cover opening film 15 is fixedly connected with the first annular steel pipe 101; four second steel wire ropes 112 with equal length are arranged on the lifting hooks, one ends of the second steel wire ropes 112 are connected with the lifting hooks of the chain block 13 by bypassing four second pulleys 122, and the other ends of the second steel wire ropes 112 are respectively connected with the second annular steel pipe 102; the second annular steel pipe 102 is sleeved on the outer side of the lower end portion of the inner frame 5, the second annular steel pipe 102 is further connected with the lower end portion of the inner film 7, the first annular steel pipe 101 is divided into four equal parts by the four connecting points of the first steel wire rope 111 and the first annular steel pipe 101, and the second annular steel pipe 102 is divided into four equal parts by the four connecting points of the second steel wire rope 112 and the second annular steel pipe 102.

A circular foundation 1 is arranged right below the inner frame 5 and the outer frame 6, a circular pit 2 with the depth of 50cm is arranged inside the foundation 1, the pit 2 is used for containing brackish water to be desalinated, and the depth of the brackish water is 30 cm; the inner wall surface of the pit 2 is provided with an impermeable film 3, the upper surface of the impermeable film 3 is provided with a black film 4, and the black film 4 is used for absorbing sunlight and enhancing the heat preservation effect; an annular water collecting tank 16 is correspondingly arranged on the foundation 1 between the inner frame 5 and the outer frame 6, the water collecting tank 16 is used for collecting water dripped from the inner wall of the outer membrane 8 and the outer wall of the inner membrane 7, and the collected water is conveyed into a water collecting tank 18 through a pipeline 17; a water inlet pipe 19 penetrates through the water collecting tank 16, and the water inlet pipe 19 is used for supplementing brackish water in the pit 2.

The utility model discloses a theory of operation does: in daytime, the inner membrane 7 and the outer membrane 8 are in a closed state, the water inlet pipe 19 and the pipeline 17 are also blocked, and the black membrane 4 absorbs heat irradiated by the sun, so that the brackish water in the pit 2 stores heat, the temperature rises and the evaporation is carried out, so that a cavity below the inner membrane 7 is filled with hot and humid gas; when the night comes, pulling the chain block 13 to enable the lifting hook to move upwards, driving the first annular steel pipe 101 and the second annular steel pipe 102 to move upwards under the driving of the lifting hook to enable the hot and wet air outlet hole 14 and the air return hole 9 to be opened simultaneously, enabling the hot and wet gas filled in the cavity below the inner membrane 7 to flow out of the hot and wet air outlet hole 14 to an interlayer between the inner membrane 7 and the outer membrane 8, enabling the hot and wet gas to be liquefied when contacting the outer membrane 8 with lower temperature, flowing and dripping into the annular water collecting tank 16 when meeting cold, enabling the gas which is not completely liquefied to flow back to the cavity below the inner membrane 7 from the air return hole 9 to drive the hot and wet gas to flow, enabling the hot and wet gas to be finally liquefied into water drops, and starting the pipeline 17 when the water level in the water collecting tank 16 is observed to be not higher than the pipeline 17, and conveying the collected water drops; if the water level in the pit is too low, the water inlet pipe 19 can be opened to supplement the water level; the device is low in manufacturing cost, does not need an external power supply, can be widely applied to remote areas in northwest of China, utilizes the characteristic that the temperature difference between day and night in northwest is large, realizes heat storage in daytime and heat release at night for brackish water, and desalts and utilizes the brackish water.

It should be understood that the present embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and 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 of the appended claims.

Claims

1. A brackish water desalination device is characterized in that: the device comprises an inner frame (5) and an outer frame (6), wherein the inner frame (5) is arranged inside the outer frame (6), and the inner frame (5) and the outer frame (6) are both hemispherical; the surface of the inner frame (5) is covered with an inner film (7), and the surface of the outer frame (6) is covered with an outer film (8); a round hot and wet air outlet (14) is arranged at the spherical top end of the inner frame (5) and the inner membrane (7); a circular cover opening film (15) is arranged above the hot and wet air outlet hole (14), an annular air return hole (9) is arranged at the lower end part of the internal frame (5), and the hot and wet air outlet hole (14) and the air return hole (9) are opened or closed by a chain block (13);

a round foundation (1) is arranged right below the inner frame (5) and the outer frame (6), a round pit (2) with the depth of 50cm is arranged inside the foundation (1), an impermeable film (3) is arranged on the surface of the inner wall of the pit (2), and a black film (4) for absorbing sunlight is arranged on the upper surface of the impermeable film (3); an annular water collecting tank (16) is correspondingly arranged on the foundation (1) between the inner frame (5) and the outer frame (6), and a water inlet pipe (19) for supplementing brackish water in the pit (2) penetrates through the water collecting tank (16).

2. A brackish water desalination plant as claimed in claim 1, characterized by: the inner film (7) and the outer film (8) are high-heat-preservation non-dropping films.

3. A brackish water desalination plant as claimed in claim 1, characterized by: the chain block (13) is arranged at the top of the outer frame (6).

4. A brackish water desalination plant as claimed in claim 1, characterized by: a first pulley (121) and a second pulley (122) which are fixedly suspended are arranged on the inner side of the outer frame (6), a lifting hook which penetrates through the outer frame (6) is arranged on the chain block (13), four first steel wire ropes (111) with equal length are arranged on the lifting hook, the first steel wire ropes (111) wind around the first pulley (121), one end of each first steel wire rope is connected with the lifting hook of the chain block (13), and the other end of each first steel wire rope is connected with the first annular steel pipe (101); the first annular steel pipe (101) is sleeved on the outer side of the top end of the hot and wet air outlet hole (14), and the outer side of the cover opening film (15) is fixedly connected with the first annular steel pipe (101); four second steel wire ropes (112) with equal length are arranged on the lifting hook, one end of each second steel wire rope (112) wound around the second pulley (122) is connected with the lifting hook of the chain block (13), and the other end of each second steel wire rope is connected with the second annular steel pipe (102); the second annular steel pipe (102) is sleeved on the outer side of the lower end portion of the inner frame (5), and the second annular steel pipe (102) is further connected with the lower end portion of the inner film (7).

5. A brackish water desalination plant as claimed in claim 1, characterized by: the water collecting tank (16) is provided with a pipeline (17) communicated with a water collecting tank (18).