阅读说明：本技术 一种用于救生船的海水淡化装置 (Sea water desalting device for lifeboat ) 是由 吴琦 郎黎成 刘海洲 苏玉香 于 2019-12-04 设计创作，主要内容包括：本发明属于海水淡化技术领域,涉及一种用于救生船的海水淡化装置。本发明包括浮体,浮体内具有空腔；空腔内壁上设有第一活塞筒和第二活塞筒,第一活塞筒上设有第一活塞杆、第一活塞和第一进气管；第二活塞筒上设有第二活塞杆和第二活塞；第一活塞杆和第二活塞杆端部之间设有箱体,箱体内具有海水腔和淡水腔,海水腔与第一活塞筒连有第一排气管,海水腔上连有海水排出管；海水腔与第二活塞筒连有第二进气管；淡水腔与第二活塞筒连有第二排气管,淡水腔内壁上设有淡水排出管和第三排气管；淡水腔内设有能将水蒸气液化的制冷机构；浮体下方设有能将外界海水输送至海水腔内的海水输送机构。本发明的优点是：有效利用波浪能为能源进行海水淡化。(The invention belongs to the technical field of seawater desalination, and relates to a seawater desalination device for a lifeboat. The invention comprises a floating body, wherein a cavity is arranged in the floating body; a first piston cylinder and a second piston cylinder are arranged on the inner wall of the cavity, and a first piston rod, a first piston and a first air inlet pipe are arranged on the first piston cylinder; a second piston rod and a second piston are arranged on the second piston cylinder; a box body is arranged between the end parts of the first piston rod and the second piston rod, a seawater cavity and a fresh water cavity are arranged in the box body, the seawater cavity and the first piston cylinder are connected with a first exhaust pipe, and the seawater cavity is connected with a seawater exhaust pipe; the seawater cavity and the second piston cylinder are connected with a second air inlet pipe; the fresh water cavity and the second piston cylinder are connected with a second exhaust pipe, and a fresh water exhaust pipe and a third exhaust pipe are arranged on the inner wall of the fresh water cavity; a refrigeration mechanism capable of liquefying water vapor is arranged in the fresh water cavity; a seawater conveying mechanism which can convey the outside seawater into the seawater cavity is arranged below the floating body. The invention has the advantages that: effectively utilizes wave energy as energy to desalt sea water.)

1. A seawater desalination apparatus for a lifeboat, comprising:

a floating body (1), wherein a cavity (13) is arranged in the floating body (1);

the piston comprises a first piston cylinder (6) and a second piston cylinder (7), wherein the first piston cylinder (6) and the second piston cylinder (7) are respectively and fixedly arranged on the inner wall of a cavity (13) oppositely, a first piston rod (61) and a second piston rod (71) are respectively and slidably arranged on the axial direction of the first piston cylinder (6) and the second piston cylinder (7), and a first piston (62) and a second piston (72) are respectively and slidably arranged on the inner walls of the first piston cylinder (6) and the second piston cylinder (7); the first piston (62) and the second piston (72) are fixedly connected with one end of a first piston rod (61) and one end of a second piston rod (71) respectively; a first air inlet pipe (63) communicated with the cavity (13) and the interior of the first piston cylinder (6) is arranged on the first piston cylinder (6), and a first air inlet check valve (631) is arranged on the first air inlet pipe (63);

the box body (5) is hinged to two opposite end parts of the first piston rod (61) and the second piston rod (71), a seawater cavity (51) and a fresh water cavity (52) are arranged in the box body (5), a first exhaust pipe (64) is connected between the bottom of the seawater cavity (51) and the first piston cylinder (6), a first exhaust check valve (641) is arranged on the first exhaust pipe (64), a seawater exhaust pipe (511) is connected to the inner wall of the seawater cavity (51), and the free end of the seawater exhaust pipe (511) extends out of the floating body (1); a second air inlet pipe (73) is connected between the top of the seawater cavity (51) and the second piston cylinder (7), and a second air inlet check valve (731) is arranged on the second air inlet pipe (73); a second exhaust pipe (74) is connected between the bottom of the fresh water cavity (52) and the second piston cylinder (7), and a second exhaust check valve (741) is arranged on the second exhaust pipe (74); a fresh water discharge pipe (521) is arranged at the bottom of the fresh water cavity (52), the free end of the fresh water discharge pipe (521) extends out of the floating body (1), and a stop valve (522) is arranged on the fresh water discharge pipe (521); a third exhaust pipe (75) communicated with the cavity (13) and the fresh water cavity (52) is arranged at the top of the fresh water cavity (52); a refrigerating mechanism capable of liquefying water vapor in the air is arranged in the fresh water cavity (51);

the seawater conveying mechanism is arranged below the floating body (1) and can convey external seawater into the seawater cavity (51).

2. A seawater desalination plant for lifeboat according to claim 1 wherein said floating body (1) is composed of a cylindrical shell (11) and hemispherical refraction plates (12) attached.

3. The seawater desalination device for the lifeboat of claim 2, wherein the seawater delivery mechanism comprises a cylindrical guide sleeve (2), and the outer wall of the guide sleeve (2) is provided with a connecting rod (22) and a fixing rod (23) in a staggered manner; one end of the fixed rod (23) is fixedly arranged on the outer wall of the guide sleeve (2), and the other end of the fixed rod is hinged with the end part of a first hinge rod (24) which rotates up and down around a first hinge (231) through the first hinge (231); the guide sleeve (2) is axially and slidably provided with a cylinder (3), the outer wall of the cylinder (3) is hinged with the lower end of a second hinged rod (35) which rotates back and forth around a second hinge (352) through the second hinge, the upper end of the second hinged rod (35) is hinged with the lower side surface of the floating body (1), and the second hinged rod (35) is hinged with the other end of the first hinged rod (24); a cylindrical piston mounting shell (4) is arranged between the fixed rod (23) and the first hinge rod (24), and a third piston rod (41) is arranged on the piston mounting shell (4) in a sliding mode in the axial direction; one end of the third piston rod (41) extends out of the piston mounting shell (4) and the end part of the third piston rod is hinged to the first hinge rod (24), the other end of the third piston rod (41) extends into the piston mounting shell (4) and the end part of the third piston rod is fixedly provided with the third piston (42), the third piston (42) is arranged on the inner wall of the piston mounting shell (4) in a sliding mode, and the bottom of the piston mounting shell (4) is hinged to the fixed rod (23) through the third hinge (45); be connected with inlet tube (43) and drain pipe (44) on piston installation shell (4) respectively, the one end of inlet tube (43) and drain pipe (44) all stretches into in piston installation shell (4), inlet tube (43) other end stretches out piston installation shell (4) and is provided with into water check valve (431) outward and on inlet tube (43), drain pipe (44) other end stretches into in cavity (13) and communicates sea water cavity (51), be provided with drainage check valve (441) on drain pipe (44).

4. A seawater desalination plant for lifeboat according to claim 1 wherein the end of said first exhaust pipe (64) extending into the seawater chamber (51) is provided with an air nozzle (65).

5. A seawater desalination plant for lifeboat according to claim 3 wherein there is a generator (32) in said cylinder (3), there is a coaxial inherent impeller (33) on the output shaft of said generator (32), there is a battery (8) in said float (1), and said generator (32) is electrically connected to said battery (8).

6. A seawater desalination plant for lifeboat according to claim 5 wherein the refrigeration mechanism comprises heat absorbing plates (911) and heat dissipating plates (921) fixed on the bottom and top of the tank (5), said heat absorbing plates (911) and heat dissipating plates (921) dividing the interior of the tank (5) into a seawater chamber (51), a fresh water chamber (52) and a working chamber (53) located between the seawater chamber (51) and the fresh water chamber (52); a semiconductor refrigerator (9) is arranged in the working cavity (53), the semiconductor refrigerator (9) is provided with a semiconductor refrigerator cold end (91) and a semiconductor refrigerator hot end (92), and the semiconductor refrigerator cold end (91) and the semiconductor refrigerator hot end (92) are fixedly connected with a heat absorption plate (911) and a heat dissipation plate (921) respectively; the semiconductor refrigerator (9) is electrically connected with the storage battery (8).

7. The seawater desalination device for lifeboat of claim 6, wherein said absorber plate (911) has a plurality of heat absorbing sheets (912) fixed thereon, each heat absorbing sheet (912) is inclined downward, and each heat absorbing sheet (912) has a plurality of through holes (913).

8. The seawater desalination apparatus for a lifeboat of claim 7 wherein the end of said second exhaust duct (74) extending into the interior of the fresh water chamber (52) is located below the heat sink (912).

9. A seawater desalination plant for lifeboat according to claim 5 wherein the end of said cylinder (3) protruding from the guide sleeve (2) is coaxially fixed with a truncated cone shaped cover (34), said truncated cone shaped cover (34) having a larger size port being a free end and having an outer diameter larger than the outer diameter of the guide sleeve (2).

10. A seawater desalination apparatus for lifeboat according to claim 3 or 5 or 6 or 7 or 8 wherein the end of said water discharge pipe (44) extending into the seawater chamber (51) is higher than the end of the seawater discharge pipe (511) extending into the seawater chamber (51).

Technical Field

The invention belongs to the technical field of seawater desalination, and relates to a seawater desalination device for a lifeboat.

Background

Except for search and rescue trapped people, the most important thing in marine rescue is to provide clean drinking fresh water, but the traditional water purifying and purifying device needs to be fixed on a life-saving ship and occupies a large amount of space, and the energy supply is a power generation device on the ship, so that the problems of low rescue efficiency, low water purifying efficiency and the like are caused, and the development of rescue is hindered.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a seawater desalination device for a lifeboat, and aims to solve the technical problems that: how to utilize wave energy as energy source to desalt sea water.

The invention is realized by the following technical scheme: a seawater desalination apparatus for a lifeboat comprising:

a float body having a cavity therein;

the first piston cylinder and the second piston cylinder are respectively and fixedly arranged on the inner wall of the cavity in an opposite mode, a first piston rod and a second piston rod are respectively arranged on the first piston cylinder and the second piston cylinder in an axial direction in a sliding mode, and a first piston and a second piston are respectively arranged on the inner walls of the first piston cylinder and the second piston cylinder in a sliding mode; the first piston and the second piston are fixedly connected with one end of a first piston rod and one end of a second piston rod respectively; the first piston cylinder is provided with a first air inlet pipe communicated with the cavity and the interior of the first piston cylinder, and the first air inlet pipe is provided with a first air inlet one-way valve;

the box body is hinged to two opposite end parts of the first piston rod and the second piston rod, a seawater cavity and a fresh water cavity are formed in the box body, a first exhaust pipe is connected between the bottom of the seawater cavity and the first piston cylinder, a first exhaust check valve is arranged on the first exhaust pipe, a seawater exhaust pipe is connected to the inner wall of the seawater cavity, and the free end of the seawater exhaust pipe extends out of the floating body; a second air inlet pipe is connected between the top of the seawater cavity and the second piston cylinder, and a second air inlet check valve is arranged on the second air inlet pipe; a second exhaust pipe is connected between the bottom of the fresh water cavity and the second piston cylinder, and a second exhaust check valve is arranged on the second exhaust pipe; a fresh water discharge pipe is arranged at the bottom of the fresh water cavity, the free end of the fresh water discharge pipe extends out of the floating body, and a stop valve is arranged on the fresh water discharge pipe; a third exhaust pipe communicated with the cavity and the fresh water cavity is arranged at the top of the fresh water cavity; a refrigerating mechanism capable of liquefying water vapor in the air is arranged in the fresh water cavity;

the seawater conveying mechanism is arranged below the floating body and can convey external seawater into the seawater cavity.

In the seawater desalination device for a lifeboat, the floating body is formed by fixedly connecting a cylindrical shell and a hemispherical refraction plate.

In the seawater desalination device for the lifeboat, the seawater conveying mechanism comprises a cylindrical guide sleeve, and connecting rods and fixing rods are arranged on the outer wall of the guide sleeve in a staggered manner; one end of the fixed rod is fixedly arranged on the outer wall of the guide sleeve, and the other end of the fixed rod is hinged with the end part of a first hinge rod which rotates up and down around a first hinge through the first hinge; the guide sleeve is axially and slidably provided with a cylinder, the outer wall of the cylinder is hinged with the lower end of a second hinge rod which rotates around a second hinge in a front-back manner through the second hinge, the upper end of the second hinge rod is hinged with the lower side surface of the floating body, and the second hinge rod is hinged with the other end of the first hinge rod; a cylindrical piston mounting shell is arranged between the fixed rod and the first hinge rod, and a third piston rod is arranged on the piston mounting shell in an axially sliding manner; one end of the third piston rod extends out of the piston mounting shell, the end part of the third piston rod is hinged to the first hinge rod, the other end of the third piston rod extends into the piston mounting shell, the end part of the third piston rod is fixedly provided with a third piston, the third piston is arranged on the inner wall of the piston mounting shell in a sliding mode, and the bottom of the piston mounting shell is hinged to the fixed rod through a third hinge; be connected with inlet tube and drain pipe on the piston installation shell respectively, the one end of inlet tube and drain pipe all stretches into in the piston installation shell, the inlet tube other end stretches out the piston installation shell outside and be provided with the check valve of intaking on the inlet tube, the drain pipe other end stretches into in the cavity and communicates the sea water cavity, be provided with the drainage check valve on the drain pipe.

In the seawater desalination device for a lifeboat, an air nozzle is arranged at the end part of the first exhaust pipe extending into the seawater cavity.

In the seawater desalination device for the lifeboat, the generator is arranged in the cylinder, the impeller is coaxially fixed on the output shaft of the generator, the storage battery is arranged in the floating body, and the generator is electrically connected with the storage battery.

In the seawater desalination device for the lifeboat, the refrigeration mechanism comprises a heat absorption plate and a heat dissipation plate which are fixedly arranged at the bottom and the top of the box body, and the heat absorption plate and the heat dissipation plate divide the inner part of the box body into a seawater cavity, a fresh water cavity and a working cavity positioned between the seawater cavity and the fresh water cavity; the semiconductor refrigerator is arranged in the working cavity and provided with a semiconductor refrigerator cold end and a semiconductor refrigerator hot end, and the semiconductor refrigerator cold end and the semiconductor refrigerator hot end are fixedly connected with the heat absorbing plate and the heat dissipating plate respectively; the semiconductor refrigerator is electrically connected with the storage battery.

In the seawater desalination device for a lifeboat, a plurality of heat absorbing sheets are fixedly arranged on the heat absorbing plate, each heat absorbing sheet inclines downwards, and each heat absorbing sheet can be provided with a plurality of through holes.

In the seawater desalination device for a lifeboat, an end of the second exhaust pipe extending into the fresh water cavity is located below the heat absorbing sheet.

In the seawater desalination device for a lifeboat, a truncated cone-shaped cover is coaxially and fixedly arranged on the end part of the cylinder extending out of the guide sleeve, the port with the large size of the truncated cone-shaped cover is a free end, and the outer diameter of the end part is larger than that of the guide sleeve.

In the seawater desalination device for a lifeboat, the end of the drain pipe extending into the seawater cavity is higher than the end of the seawater discharge pipe extending into the seawater cavity.

Compared with the prior art, the device has the following advantages:

1. the floating body floats on the sea surface under the action of self buoyancy. The seawater conveying mechanism conveys seawater into the seawater cavity, and the seawater in the seawater cavity is discharged out of the floating body through the seawater discharge pipe under the self gravity. The waves impact the floating body to drive the floating body to rock on the sea surface. Under the combined action of the self weight of the box body, the weight of the seawater in the seawater cavity and the acting force generated by the seawater impacting the inner wall of the seawater cavity, the box body moves back and forth along with the shaking of the floating body. The box body drives the first piston rod and the second piston rod to synchronously and reversely move. Air in the cavity sequentially passes through the first air inlet pipe and the first piston cylinder to enter the seawater cavity, the seawater evaporation rate is greatly improved by the contact of the air and the seawater, and the water vapor content in the air is improved; air at the top of the seawater cavity is discharged into the fresh water cavity through the second air inlet pipe, the second piston cylinder and the second exhaust pipe, the water vapor is cooled by the refrigerating mechanism and liquefied to form water, and the air in the fresh water cavity finally returns into the cavity through the third exhaust pipe, so that a complete cycle is formed; when fresh water is obtained, the stop valve is opened, and the fresh water is discharged out of the floating body from the fresh water cavity through the fresh water discharge pipe. The structure uses wave energy as energy to automatically desalt seawater to obtain fresh water, has small volume, does not occupy the space of a lifeboat, and has simple structure.

2. Sunlight irradiates into the cavity through the refraction plate, heats air in the cavity, and increases the air temperature. At the moment, when air with a certain temperature passes through the seawater in the seawater cavity, the seawater evaporation rate is further improved, and the content of water vapor in the air is effectively improved. The structure combines wave energy and solar energy, and further improves the working efficiency of seawater desalination of the device.

3. The guide sleeve is arranged on the lifeboat through the connecting rod, the guide sleeve is static relative to the lifeboat, the floating body floats near the lifeboat through the connecting rod, and the device moves along with the lifeboat. The floating body drives the second hinge rod and the first hinge rod to move synchronously in the shaking process. At the moment, the first hinge rod rotates up and down around the first hinge under the action of the second hinge rod, the first hinge rod drives the third piston rod to extend out of and retract into the piston mounting shell, and the piston mounting shell rotates up and down around the third hinge. The third piston rod drives the third piston to slide on the inner wall of the piston mounting shell, so that the volume of a cavity partitioned by the third piston in the piston mounting shell is continuously changed. The external seawater enters the piston mounting shell through the water inlet one-way valve and the water inlet pipe; the seawater in the piston mounting shell is discharged into the seawater cavity through the drainage check valve and the drainage pipe. The structure takes wave energy as energy to automatically convey seawater into the seawater cavity, and further improves the utilization rate of the wave energy.

4. When seawater flows into the water flow channel and impacts the impeller, the impeller drives the generator to generate electricity. The electric energy generated by the generator is stored in the storage battery. The floating body drives the second hinge rod and the first hinge rod to move synchronously in the shaking process. At the moment, the first hinge rod rotates up and down around the first hinge under the action of the second hinge rod, the upper end of the second hinge rod rotates back and forth around the other end of the first hinge rod, and the lower end of the second hinge rod drives the cylinder to slide back and forth in the guide sleeve through the second hinge rod, so that the seawater amount flowing into the cylinder is greatly increased, and the flow rate of the seawater relative to the impeller is also increased. The impact on the impeller is effectively improved after the flow velocity of the seawater is increased, so that the rotating speed of the impeller is increased, and the generating efficiency of the generator is effectively improved. The device combines wave energy and tidal current energy to increase the generating efficiency of the generator, realizes self-energy supply of the device, and effectively improves the utilization rate of the wave energy and the tidal current energy.

5. The cold end of the semiconductor refrigerator converts part of electric energy into energy when water vapor is liquefied, and the water vapor in the fresh water cavity is liquefied through the heat absorption plate; the hot end of the semiconductor refrigerator converts part of the electric energy into energy during seawater evaporation, and the seawater is heated through the heat dissipation plate, so that the evaporation rate of the seawater is improved. The structure effectively improves the working efficiency of the seawater desalination device.

Drawings

Fig. 1 is a schematic longitudinal structure of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view at B in fig. 1.

Fig. 4 is a cross-sectional view of the structure at C-C in fig. 1.

In the figure, 1, a floating body; 11. a cylindrical housing; 111. a first annular rim; 12. a refracting plate; 121. a first annular rim; 13. a cavity; 2. a guide sleeve; 21. a guide channel; 22. a connecting rod; 23. fixing the rod; 231. a first hinge; 24. a first hinge lever; 25. a limiting groove; 3. a cylinder; 31. a water flow channel; 32. a generator; 33. an impeller; 34. a dome-shaped cover; 35. a second hinge lever; 351. mounting holes; 352. a second hinge; 353. hinging a shaft; 36. a slider; 4. a piston mounting housing; 41. a third piston rod; 42. a third piston; 43. a water inlet pipe; 431. a water inlet one-way valve; 44. a drain pipe; 441. a drain check valve; 45. a third hinge; 5. a box body; 51. a seawater cavity; 511. a seawater discharge pipe; 52. a fresh water cavity; 521. a fresh water discharge pipe; 522. a stop valve; 53. a working chamber; 6. a first piston cylinder; 61. a first piston rod; 62. a first piston; 63. a first intake pipe; 631. a first air intake check valve; 64. a first exhaust pipe; 641. a first exhaust check valve; 65. an air nozzle; 7. a second piston cylinder; 71. a second piston rod; 72. (ii) a 73. A second intake pipe; 731. a second air intake check valve; 74. a second exhaust pipe; 741. a second exhaust check valve; 75. a third exhaust pipe; 8. a storage battery; 9. a semiconductor refrigerator; 91. a cold end of the semiconductor refrigerator; 911. a heat absorbing plate; 912. a heat absorbing sheet; 913. a through hole; 92. a semiconductor refrigerator hot end; 921. a heat dissipation plate; .

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1 to 4, a seawater desalination apparatus for a lifeboat, comprising: the floating body 1, wherein the floating body 1 is internally provided with a cavity 13;

the piston comprises a first piston cylinder 6 and a second piston cylinder 7, wherein the first piston cylinder 6 and the second piston cylinder 7 are respectively and fixedly arranged on the inner wall of the cavity 13 in an opposite manner, a first piston rod 61 and a second piston rod 71 are respectively and slidably arranged on the axial direction of the first piston cylinder 6 and the second piston cylinder 7, and a first piston 62 and a second piston 72 are respectively and slidably arranged on the inner walls of the first piston cylinder 6 and the second piston cylinder 7; the first piston 62 and the second piston 72 are fixedly connected with one ends of the first piston rod 61 and the second piston rod 71 respectively; the first piston cylinder 6 is provided with a first air inlet pipe 63 which is communicated with the cavity 13 and the inside of the first piston cylinder 6, and the first air inlet pipe 63 is provided with a first air inlet one-way valve 631;

the box body 5 is hinged to two opposite end parts of the first piston rod 61 and the second piston rod 71, a seawater cavity 51 and a fresh water cavity 52 are arranged in the box body 5, a first exhaust pipe 64 is connected between the bottom of the seawater cavity 51 and the first piston cylinder 6, a first exhaust check valve 641 is arranged on the first exhaust pipe 64, a seawater exhaust pipe 511 is connected to the inner wall of the seawater cavity 51, and the free end of the seawater exhaust pipe 511 extends out of the floating body 1; a second air inlet pipe 73 is connected between the top of the seawater cavity 51 and the second piston cylinder 7, and a second air inlet check valve 731 is arranged on the second air inlet pipe 73; a second exhaust pipe 74 is connected between the bottom of the fresh water cavity 52 and the second piston cylinder 7, and a second exhaust check valve 741 is arranged on the second exhaust pipe 74; a fresh water discharge pipe 521 is arranged at the bottom of the fresh water cavity 52, the free end of the fresh water discharge pipe 521 extends out of the floating body 1, and a stop valve 522 is arranged on the fresh water discharge pipe 521; a third exhaust pipe 75 for communicating the cavity 13 and the fresh water cavity 52 is arranged at the top of the fresh water cavity 52; a refrigerating mechanism capable of liquefying water vapor in the air is arranged in the fresh water cavity 51;

and the seawater conveying mechanism is arranged below the floating body 1 and can convey the external seawater into the seawater cavity 51.

When the device is used, the floating body 1 is placed in the seawater near the lifeboat. The floating body 1 floats on the sea surface under the action of self buoyancy. The seawater transport mechanism transports seawater into the seawater chamber 51. The waves impact the floating body 1 and drive the floating body 1 to rock on the sea surface. Under the combined action of the self weight of the tank body 5, the weight of the seawater in the seawater chamber 51 and the acting force generated by the seawater impacting the inner wall of the seawater chamber 51, the tank body 5 moves back and forth along with the shaking of the floating body 1. The box body 5 drives the first piston rod 61 and the second piston rod 71 to synchronously move in opposite directions. The seawater in the seawater chamber 51 is discharged out of the floating body 1 through the seawater discharge pipe 511 under its own weight.

When the first piston rod 61 extends out of the first piston cylinder 6, the first piston 62 sucks air in the cavity 13 into the first piston cylinder 6 through the first air inlet check valve 631 and the first air inlet pipe 63; meanwhile, the second piston rod 71 retracts into the second piston cylinder 7, the second piston 72 discharges the air in the second piston cylinder 7 into the fresh water cavity 52 through the second exhaust check valve 741 and the second exhaust pipe 74, the air in the fresh water cavity 52 liquefies the water vapor in the air into water through the refrigeration mechanism, the water is collected on the bottom of the fresh water cavity 52, and the air in the fresh water cavity 52 is discharged into the cavity 13 through the third exhaust pipe 75.

When the first piston rod 61 retracts into the first piston cylinder 6, the first piston 62 discharges the air in the first piston cylinder 6 into the seawater cavity 51 through the first exhaust pipe 64 and the first exhaust check valve 641, the air moves upwards from the bottom of the seawater cavity 51, passes through the seawater and reaches the top of the seawater cavity 51 by combining with the water vapor in the seawater, and the water vapor content in the air is greatly increased; meanwhile, the second piston rod 71 extends out of the second piston cylinder 7, and the second piston 72 sucks air at the top of the seawater chamber 51 into the second piston cylinder 7 through the second air inlet pipe 73 and the second air inlet check valve 731.

Under the action of waves, the box body 5 continuously moves back and forth in the shaking process of the floating body 1, air in the cavity 13 sequentially passes through the first air inlet pipe 63 and the first piston cylinder 6 to enter the seawater cavity 51, the seawater evaporation rate is greatly improved through the contact of the air and the seawater, and the water vapor content in the air is improved; the air at the top of the seawater cavity 51 is exhausted into the fresh water cavity 52 through the second air inlet pipe 73, the second piston cylinder 7 and the second air outlet pipe 74, the water vapor is cooled by the refrigeration mechanism and liquefied to form water, and the air in the fresh water cavity 52 finally returns to the cavity 13 through the third air outlet pipe 75, so that a complete cycle is formed; when fresh water is obtained, the stop valve 522 is opened, and the fresh water is discharged from the fresh water chamber 52 to the outside of the floating body 1 through the fresh water discharge pipe 521. The structure uses wave energy as energy to automatically desalt seawater to obtain fresh water, has small volume, does not occupy the space of a lifeboat, and has simple structure.

Specifically, the floating body 1 is fixedly connected by a cylindrical shell 11 and a hemispherical refraction plate 12, the upper side edge of the cylindrical shell 11 is provided with a first annular convex edge 111, the edge of the refraction plate 12 is provided with a first annular convex edge 121, when the refraction plate 12 covers the upper side edge of the cylindrical shell 11, the first annular convex edge 121 is fixed together with the first annular convex edge 111 through bolts and nuts, and a cavity 13 is formed between the inner wall of the cylindrical shell 11 and the lower side surface of the refraction plate 12.

Sunlight penetrates through the refraction plate 12 to irradiate into the cavity 13, and air in the cavity 13 is heated, so that the air temperature is increased. At this time, when air with a certain temperature passes through the seawater in the seawater chamber 51, the evaporation rate of the seawater is further increased, and the content of water vapor in the air is effectively increased. The structure combines wave energy and solar energy, and further improves the working efficiency of seawater desalination of the device.

Specifically, the seawater conveying mechanism comprises a cylindrical guide sleeve 2, and connecting rods 22 and fixing rods 23 are arranged on the outer wall of the guide sleeve 2 in a staggered mode; one end of the fixed rod 23 is fixedly arranged on the outer wall of the guide sleeve 2, and the other end is hinged with the end part of a first hinged rod 24 which rotates up and down around a first hinge 231 through the first hinge 231; the inner walls of the upper side and the lower side of the guide sleeve 2 are respectively provided with a long-strip-shaped limiting groove 25, and one end edge of each limiting groove 25 extends to one end part of the guide sleeve 2; the outer walls of the upper side and the lower side of the cylinder 31 are respectively and fixedly provided with a sliding block 36, and each sliding block 36 is arranged in a limiting groove 25 in a sliding manner; the cylinder 3 is arranged in the axial direction of the guide sleeve 2 in a sliding way through a sliding block 36; the outer wall of the cylinder 3 is hinged with the lower end of a second hinge rod 35 which rotates back and forth around a second hinge 352 through a second hinge, the upper end of the second hinge rod 35 is hinged with the lower side surface of the floating body 1, the middle part of the second hinge rod 35 is provided with a mounting hole 351, the other end of the first hinge rod 24 extends into the mounting hole 351, and the end part of the first hinge rod is hinged on the inner wall of the mounting hole 351 through a hinge shaft 353; a cylindrical piston mounting shell 4 is arranged between the fixed rod 23 and the first hinge rod 24, and a third piston rod 41 is arranged on the piston mounting shell 4 in a sliding manner in the axial direction; one end of the third piston rod 41 extends out of the piston mounting shell 4 and the end part thereof is hinged on the first hinge rod 24, the other end of the third piston rod 41 extends into the piston mounting shell 4 and the end part thereof is fixedly provided with a third piston 42, the third piston 42 is slidably arranged on the inner wall of the piston mounting shell 4, and the bottom part of the piston mounting shell 4 is hinged on the fixed rod 23 through a third hinge 45; be connected with inlet tube 43 and drain pipe 44 on the piston installation shell 4 respectively, the one end of inlet tube 43 and drain pipe 44 all stretches into in the piston installation shell 4, the inlet tube 43 other end stretches out piston installation shell 4 outside and be provided with into water check valve 431 on the inlet tube 43, the drain pipe 44 other end stretches into in the cavity 13 and feed through sea water cavity 51, be provided with drainage check valve 441 on the drain pipe 44.

The guide sleeve 2 is mounted on the lifeboat by means of a connecting rod 22, the guide sleeve 2 is stationary relative to the lifeboat, the floating body 1 floats near the lifeboat by means of the connecting rod 22, and the device moves together with the lifeboat. The floating body 1 drives the second hinge rod 35 and the first hinge rod 24 to move synchronously during the shaking process. At this time, the first hinge lever 24 is rotated up and down about the first hinge 231 by the second hinge lever 35, the first hinge lever 24 drives the third piston rod 41 to extend and retract into the piston mounting case 4, and the piston mounting case 4 is rotated up and down about the third hinge 45. The third piston rod 41 drives the third piston 42 to slide on the inner wall of the piston mounting shell 4, so that the volume of the chamber partitioned by the third piston 42 in the piston mounting shell 4 is changed continuously. The external seawater enters the piston installation shell 4 through the water inlet check valve 431 and the water inlet pipe 43; the seawater inside the piston installation case 4 is discharged into the seawater chamber 51 through the discharge check valve 441 and the discharge pipe 44.

The structure takes wave energy as energy to automatically convey seawater into the seawater cavity 51, and further improves the utilization rate of the wave energy.

Specifically, an air nozzle 65 is provided at an end of the first exhaust pipe 64 extending into the seawater chamber 51.

The air nozzles 65 help to increase the contact area of air and seawater, and further increase the evaporation rate of seawater.

Specifically, a generator 32 is provided in the cylinder 3, an impeller 33 is coaxially fixed to an output shaft of the generator 32, a battery 8 is provided in the float 1, and the generator 32 is electrically connected to the battery 8.

When seawater flows into the water flow channel 31 and impacts the impeller 33, the impeller 33 drives the generator 32 to generate electricity. The electric power generated by the generator 32 is stored in the battery 8. The floating body 1 drives the second hinge rod 35 and the first hinge rod 24 to move synchronously during the shaking process. At this time, the first hinge rod 24 rotates up and down around the first hinge 231 under the action of the second hinge rod 35, the upper end of the second hinge rod 35 rotates back and forth around the other end of the first hinge rod 24, and the lower end of the second hinge rod 35 drives the cylinder 3 to slide back and forth in the guide sleeve 2 through the second hinge 352, so that the amount of seawater flowing into the cylinder 3 is greatly increased, and the flow rate of the seawater relative to the impeller 33 is also increased. The impact on the impeller 33 is effectively improved after the flow velocity of the seawater is increased, so that the rotating speed of the impeller 33 is increased, and the generating efficiency of the generator 32 is effectively improved. The device combines wave energy and tidal current energy to increase the generating efficiency of the generator 32, realizes self-energy supply of the device, and effectively improves the utilization rate of the wave energy and the tidal current energy.

Specifically, the refrigeration mechanism comprises a heat absorbing plate 911 and a heat radiating plate 921 which are fixedly arranged on the bottom and the top of the box body 5, wherein the heat absorbing plate 911 and the heat radiating plate 921 divide the interior of the box body 5 into a seawater cavity 51, a fresh water cavity 52 and a working cavity 53 positioned between the seawater cavity 51 and the fresh water cavity 52; a semiconductor refrigerator 9 is arranged in the working cavity 53, the semiconductor refrigerator 9 is provided with a semiconductor refrigerator cold end 91 and a semiconductor refrigerator hot end 92, and the semiconductor refrigerator cold end 91 and the semiconductor refrigerator hot end 92 are fixedly connected with a heat absorption plate 911 and a heat dissipation plate 921 respectively; the semiconductor refrigerator 9 is electrically connected to the battery 8.

In the process of seawater desalination, the device starts a refrigerating mechanism. The storage battery 8 provides electric energy for the semiconductor refrigerator 9, the cold end 91 of the semiconductor refrigerator converts part of the electric energy into energy when water vapor is liquefied, and the water vapor in the fresh water cavity 52 is liquefied through the heat absorption plate 911; the semiconductor refrigerator hot end 92 converts a part of the electric energy into energy when the seawater is evaporated, and heats the seawater through the heat radiating plate 921, thereby increasing the evaporation rate of the seawater.

The structure effectively improves the working efficiency of the seawater desalination device.

Specifically, a plurality of heat absorbing sheets 912 are fixedly arranged on the heat absorbing plate 911, each heat absorbing sheet 912 inclines downwards, and each heat absorbing sheet 912 can be provided with a plurality of through holes 913.

The arrangement of the heat absorbing sheet 912 is helpful to increase the contact surface of the heat absorbing plate 911 and the water vapor, so as to further increase the liquefaction rate of the water vapor, and the water vapor is liquefied from the heat absorbing sheet 912 to form water drops, then moves downwards along the heat absorbing sheet 912 and finally collects on the bottom of the fresh water cavity 52. The provision of the through holes 913 facilitates the flow of air from the bottom of the fresh water chamber 52 to the top of the fresh water chamber 52 and eventually back into the cavity 13.

Specifically, the end of the second exhaust pipe 74 that extends into the fresh water chamber 52 is located below the heat absorbing plate 912.

The air immediately after being discharged from the second exhaust pipe 74 contacts the heat absorbing sheet 912, and the water vapor in the air is rapidly liquefied on the surface of the heat absorbing sheet 912 to form water droplets.

Specifically, a truncated cone-shaped cover 34 is coaxially and fixedly arranged on the end part of the cylinder 3 extending out of the guide sleeve 2, the port with the large size of the truncated cone-shaped cover 34 is a free end, and the outer diameter of the end part is larger than that of the guide sleeve 2.

The arrangement of the truncated cone-shaped cover 34 increases the amount of seawater flowing into the cylinder 3 and the flow velocity of the seawater in the cylinder 3, so that the power generation efficiency of the first generator 32 is further improved; meanwhile, the truncated cone-shaped cover 34 also plays a role in limiting the cylinder 3, so that the cylinder 3 always slides back and forth in the guide sleeve 2.

Specifically, the end of the water discharge pipe 44 extending into the seawater chamber 51 is higher than the end of the seawater discharge pipe 511 extending into the seawater chamber 51.

The external seawater is ejected from the water outlet pipe 44 and rapidly falls to the bottom of the seawater cavity 51 under the action of gravity, and the seawater is fully contacted with air in the process, so that the evaporation of water is facilitated; meanwhile, the seawater in the seawater chamber 51 is automatically discharged out of the floating body 1 through the seawater discharge pipe 511 under its own weight, thereby preventing the excessive amount of seawater in the seawater chamber 51 and preventing the seawater from flowing into the fresh water chamber 52.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.