Freezing method seawater desalination device

Abstract

The invention relates to the technical field of seawater desalination, and discloses a freezing method seawater desalination device, which comprises a seawater container and an LNG container, the LNG container is arranged near the lower part of the exterior of the seawater container, the two ends of the top of the LNG container are fixedly connected with an inlet and outlet connecting pipe, and the exterior of the LNG container is wrapped with a thermal insulation cylinder; an end plate is fixedly arranged on the upper end face of the seawater container, a cover plate is fixedly arranged at the upper end of the end plate, a rotating column is rotationally connected to the middle of the seawater container, a spiral scraper is fixedly arranged on the outer side wall of the rotating column, water leakage holes distributed in an annular array mode are formed in the scraper, and the upper portion of the rotating column is connected to the middle of the cover plate in a penetrating mode. Ice residue outlets are formed in the front end and the rear end of the cover plate, and limiting grooves are formed above the ice residue outlets; an ice residue discharging lifting shielding mechanism is arranged above the ice residue outlet, and an ice residue discharging limiting mechanism is arranged on the inner side of the upper portion of the limiting groove. The low-temperature characteristic of LNG is used for freezing seawater, and the purpose of seawater desalination is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of seawater desalination, in particular to a freezing method seawater desalination device. Background Art

[0002] Desalination of seawater by freezing has always been a hot topic in the industry. The melting heat of water used by freezing is 1 / 7 of the vaporization heat of water. Therefore, compared with distillation, desalination of seawater by freezing can save a lot of energy, but the source of cold energy required by freezing is very limited. The conversion from LNG to NG releases about 860kJ / kg of cold energy, and this part of cold energy is generally wasted, which not only causes a huge waste of energy, but also has a certain impact on the ecology. At present, the consumption of LNG in my country is increasing, so the utilization of this part of cold energy can greatly reduce the waste of energy and provide considerable cold energy for desalination of seawater. The basic principle of desalination of seawater by freezing is to use the basic properties of ice, that is, water will automatically exclude other impurities such as suspended particles, metal salt ions, microorganisms, etc. when it crystallizes in a low temperature environment. However, in the actual process, it is inevitable that salt cells filled with brine will be contained in the ice body. If the desalination rate is to be further improved, desalination treatment is required. Finally, the obtained ice crystals are melted using the heat of natural seawater to obtain desalinated water.

[0003] After searching, the Chinese patent authorization number CN110002525A discloses a seawater desalination device using LNG cold energy, including a fixing frame, a motor, a hollow shaft, a brush, an LNG container, a seawater container and a heat preservation material. The motor is fixed on the top of the cylinder through the fixing frame; the fixing frame is a cubic steel frame; the hollow shaft is connected to the output end of the motor through a coupling, and the bottom end of the hollow shaft is connected to the shaft end fixing device at the bottom of the seawater container; the brush is connected to the hollow shaft by welding; the LNG container is surrounded by the seawater container; the heat preservation material is surrounded by the outer periphery of the LNG container.

[0004] The desalination device using LNG cold energy in the above patent has the following shortcomings: it is inconvenient to control the discharge of ice slag after freezing. It is not accurate to control the discharge of ice slag by controlling the speed of the motor alone. It is difficult to discharge the ice slag accurately and stably, which may cause the unfrozen seawater to be discharged at the same time. Therefore, it is necessary to design a corresponding technical solution to solve this problem. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a seawater desalination device using a freezing method, which solves the problem that the discharge control of ice slag after freezing is inconvenient. The method of controlling the discharge of ice slag by controlling the speed of the motor alone is not accurate, and it is difficult to discharge the ice slag accurately and stably, which may cause the technical problem that unfrozen seawater may be discharged at the same time.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a refrigeration method seawater desalination device, comprising a seawater container and an LNG container, wherein the LNG container is arranged outside and below the seawater container, inlet and outlet connecting pipes are fixedly connected to the top ends of the LNG container, and the outside of the LNG container is wrapped with a heat preservation cylinder;

[0009] An end plate is fixedly provided on the upper end surface of the seawater container, a cover plate is fixedly provided on the upper end of the end plate, the diameter of the end plate is larger than the diameter of the cover plate, the diameter of the cover plate is larger than the diameter of the seawater container, a rotating column is rotatably connected to the middle of the seawater container, a spiral scraper is fixedly provided on the outer wall of the rotating column, a circular array of water leakage holes is provided inside the scraper, the upper part of the rotating column is connected to the middle of the cover plate through, the front and rear ends of the cover plate are provided with ice slag outlets, and a limiting groove is provided above the ice slag outlet;

[0010] An ice-slag discharging lifting and shielding mechanism is provided above the ice-slag outlet, and an ice-slag discharging limiting mechanism is provided at the upper inner side of the limiting groove.

[0011] Preferably, the top of the insulation cylinder is symmetrically fixed with support columns, the top of the support columns is fixed with extension plates, a top plate is fixed between the extension plates, a movable hole is opened in the middle of the cover plate, a shaft ring is provided in the middle of the movable hole, an extension frame is fixedly distributed on the outer wall of the shaft ring and the upper end surface of the cover plate, the bottom of the rotating column is rotatably connected with a shaft seat, the shaft seat is fixedly arranged in the middle of the inner bottom of the seawater container, and the top of the rotating column passes through the top plate and is connected with a fixed bevel gear; the symmetrical support columns and extension plates are used to stably support the top plate upward, the movable hole is used to place the shaft ring, a plurality of extension frames are used to stably support the shaft ring, the shaft ring is used to stably support the rotation of the rotating column, and the shaft seat is used to support the stable rotation of the bottom of the rotating column.

[0012] Preferably, a driving mechanism is connected to the top of the fixed bevel gear, and the driving mechanism includes a driving motor, a fixed seat and a driving bevel gear. A base is fixedly provided at the bottom of the driving motor, and a driving shaft is connected to the output end of the driving motor. The driving shaft passes through and is rotatably connected to the inside of the fixed seat, and the driving bevel gear is fixed to the inner end of the driving shaft, and the driving bevel gear is meshingly connected to the top of the fixed bevel gear; the fixed bevel gear is used to mesh with the driving bevel gear to rotate, the driving motor is used to drive and control the driving shaft and the driving bevel gear to rotate, and the fixed seat is used to stably support the rotation of the driving shaft and reduce the shaking coefficient.

[0013] Preferably, the ice slag discharging lifting and blocking mechanism includes a shielding plate, a limit plate, a pressure plate, a connecting rod, a cross plate, an electric hydraulic device and a bracket, the bracket is an inverted L-shaped plate structure fixedly arranged at one end of the top of the top plate, the electric hydraulic device is fixedly arranged at the inner end of the bracket, the bottom of the electric hydraulic device is connected to a hydraulic rod, the cross plate is fixedly arranged at the bottom of the hydraulic rod, the connecting rod is fixedly arranged at both ends of the bottom of the cross plate, the pressure plate is fixedly arranged at the bottom of the connecting rod, the bottom of the pressure plate is fixedly provided with a transfer column near the inner end, the limit plate is fixedly arranged at the bottom of the transfer column, and the shielding plate is fixedly arranged at the bottom of the limit plate; the bracket with an inverted L-shaped plate structure is used to fix and support the electric hydraulic device to the top of the top plate, the electric hydraulic device is used to hydraulically control the lifting and adjusting height of the hydraulic rod and the lower components, the cross plate is used to drive the longitudinally distributed connecting rods to lift and adjust at the same time, the pressure plate and the transfer column are used to drive the limit plate and the shielding plate to lift and adjust, the shielding plate is used to close the ice slag outlet, and the limit plate is used to press to the top of the limit groove.

[0014] Preferably, a limit rod is fixedly distributed on the top of the pressure plate, positioning plates are fixedly distributed at the front and rear ends of the top plate, a limit ring is fixedly provided on the outer end of the positioning plate, and the limit rod is connected to the inside of the limit ring; the limit rod is used to assist the stable lifting and lowering adjustment of the pressure plate, and the limit ring is used to limit the sliding limit rod.

[0015] Preferably, an auxiliary discharging mechanism is provided below the baffle plate, and the auxiliary discharging mechanism includes a second motor, a discharging flap, a rotating rod, a fixed plate, a transmission belt and a second driving shaft disk. The second motor is fixedly arranged above the limit plate, and the second driving shaft disk is fixedly arranged at the output end of the second motor. The baffle plate and the right end of the limit plate are provided with limited holes, and a groove is provided in the middle of the bottom of the baffle plate. The fixed plate is fixedly arranged at both ends of the bottom of the baffle plate, and the rotating rod is rotatably connected between the fixed plates near the bottom. The discharging flap is fixedly distributed in a bent structure. The outer side wall of the rotating rod, the outer end of the rotating rod extends through and is connected with a driven shaft disk 2, a transmission belt is connected between the driven shaft disk 2 and the driving shaft disk 2, and the transmission belt passes through and is connected to the limiting hole; the motor 2 is used to drive and control the driving shaft disk 2 to rotate, the transmission belt is used to link the driving shaft disk 2 and the driven shaft disk 2 to rotate simultaneously, the limiting hole limits the transmission belt transmission, the driven shaft disk 2 is used to drive the rotating rod to rotate, the rotating rod is used to drive multiple groups of discharging flaps with a bent structure to rotate, the discharging flap is used to discharge ice debris smoothly, and the groove is used to limit the activity adjustment of the discharging flap.

[0016] Preferably, the ice slag discharging limiting mechanism includes a limiting frame, an extension frame and a driving gear, the limiting frame is fixedly arranged on both sides above and on the inner side of the limiting groove, the extension frame is slidably connected to the inner upper part of the limiting frame, a sliding groove is provided in the middle of the inner rear part of the limiting frame, a through hole is provided in the middle of the rear part of the limiting frame, a tooth plate is fixedly provided in the middle of the inner side of the extension frame, the tooth plate is slidably connected to the sliding groove, and the driving gear is meshedly connected to the inner end of the tooth plate through the through hole; the sliding groove is used to limit the lifting and sliding of the tooth plate, the driving gear is used to directly mesh and control the up and down adjustment of the tooth plate, and the through hole is used to limit the driving gear.

[0017] Preferably, a fixed shaft is fixedly provided at the side end of the driving gear, a driven shaft disc 1 is fixedly provided at the end of the fixed shaft, the inner end of the driven shaft disc 1 is connected to a driving shaft disc 1 through a transmission belt, a driving shaft rod is fixedly provided at the middle of the driving shaft disc 1, the end of the driving shaft rod is connected to a motor 1, and the motor 1 is fixedly provided at the upper end of the cover plate; a shaft ring 2 is rotatably connected at the middle of the fixed shaft, a support plate is fixedly provided at the bottom of the shaft ring 2, and the support plate is fixedly provided at the upper end of the cover plate; motor 1 is used for controlling the rotation of the driving shaft rod and the driving shaft disc 1, the driving shaft disc 1 is used for driving the driven shaft disc 1 and the fixed shaft to rotate simultaneously, and the support plate and shaft ring 2 are used for stably supporting the rotation of the fixed shaft.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the invention has the following beneficial effects: by arranging an LNG container near the bottom of the seawater container, the low temperature characteristics of LNG are used to freeze the seawater, so as to achieve the purpose of seawater desalination. The treated fresh water can be recycled and used. Compared with the traditional desalination technology, it has higher energy efficiency and lower operating cost. The insulation cylinder ensures that the low temperature environment of the LNG container is maintained, thereby improving the desalination efficiency. The design of the rotating column and the spiral scraper in the seawater container helps to stir the seawater evenly and promote the upward discharge of ice slag. The setting of the ice slag discharge lifting and shielding mechanism and the ice slag discharge limiting mechanism realizes the automatic control of ice slag discharge, which is convenient for lifting and controlling the discharge of ice slag according to needs, ensuring the stability and accuracy of the discharged ice slag, and facilitating the recovery and completion of the work. At the same time, the design of the auxiliary discharge mechanism can assist the rapid and accurate discharge of ice slag, bringing a technological breakthrough in the field of seawater desalination. The use of LNG cold energy to desalinate seawater is not only conducive to saving energy, reducing carbon emissions, and developing a circular economy, but also can reduce the impact of LNG receiving stations on the ecological environment of nearby sea areas. It is of great significance and has broad prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall top viewing angle structure of the present invention;

[0021] Figure 2 It is a front structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the seawater container of the present invention from an upper perspective;

[0023] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the seawater container of the present invention;

[0024] Figure 5 It is a schematic diagram of the partial structure of the cover plate above the seawater container of the present invention;

[0025] Figure 6 It is a schematic diagram of the overall structure of the driving mechanism and the ice slag discharging lifting and shielding mechanism of the present invention;

[0026] Figure 7 It is a structural schematic diagram of one end of the ice slag discharging limiting mechanism above the cover plate of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the other end of the ice slag discharging limiting mechanism above the cover plate of the present invention;

[0028] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at A in the middle;

[0029] Fig.10 It is a schematic diagram of the structure of the auxiliary discharging mechanism of the present invention from an upper perspective;

[0030] Fig.11 For the present invention Fig.10 The enlarged structural diagram at B in the middle;

[0031] Fig.12 It is a schematic diagram of the structure of the auxiliary discharging mechanism of the present invention from a bottom perspective;

[0032] Fig.13 It is a front structural schematic diagram of the auxiliary discharging mechanism of the present invention.

[0033] In the figure, 1, seawater container; 11, cover plate; 111, limit groove; 112, movable hole; 12, end plate; 121, ice slag outlet; 13, top plate; 131, support column; 132, extension plate; 14, rotating column; 141, scraper; 1411, leaking hole; 142, shaft seat; 143, shaft ring 1; 1431, extension frame; 140, fixed bevel gear; 2, LNG container; 21, inlet and outlet connecting pipes; 22, insulation cylinder; 3, driving mechanism; 31, driving motor; 311, base; 32, driving shaft; 33, fixed seat; 34, driving bevel gear; 4, ice slag discharging lifting shielding mechanism; 41, shielding plate; 410, groove; 411, limit plate; 412, limit hole; 42, pressing plate; 4 21. Transfer column; 422. Limit rod; 423. Limit ring; 424. Positioning plate; 43. Connecting rod; 44. Horizontal plate; 45. Electric hydraulic device; 451. Hydraulic rod; 46. Bracket; 5. Ice slag discharging limit mechanism; 51. Limit frame; 511. Slide groove; 512. Through hole; 52. Extension frame; 521. Tooth plate; 53. Driving gear; 531. Fixed shaft; 532. Driven shaft disc 1; 533. Shaft ring 2; 5331. Support plate; 54. Motor 1; 541. Drive shaft rod; 542. Drive shaft disc 1; 6. Auxiliary discharging mechanism; 61. Motor 2; 62. Discharging flap; 621. Rotating rod; 63. Fixed plate; 64. Driven shaft disc 2; 65. Transmission belt; 66. Drive shaft disc 2. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 13The embodiment of the present invention provides a technical solution: a refrigeration method seawater desalination device, comprising a seawater container 1 and an LNG container 2, wherein the LNG container 2 is arranged outside and below the seawater container 1, and the top two ends of the LNG container 2 are fixedly connected with inlet and outlet connecting pipes 21, and the outside of the LNG container 2 is wrapped with a heat preservation tube 22;

[0036] An end plate 12 is fixedly provided on the upper end surface of the seawater container 1, and a cover plate 11 is fixedly provided on the upper end of the end plate 12. The diameter of the end plate 12 is larger than the diameter of the cover plate 11, and the diameter of the cover plate 11 is larger than the diameter of the seawater container 1. A rotating column 14 is rotatably connected in the middle of the seawater container 1. A spiral scraper 141 is fixedly provided on the outer wall of the rotating column 14. Leakage holes 1411 in a circular array are provided inside the scraper 141. The upper part of the rotating column 14 is connected to the middle of the cover plate 11 through and through. Ice slag outlets 121 are provided at the front and rear ends of the cover plate 11, and a limiting groove 111 is provided above the ice slag outlet 121.

[0037] An ice-slag discharging lifting and shielding mechanism 4 is provided above the ice-slag outlet 121 , and an ice-slag discharging limiting mechanism 5 is provided at the upper inner side of the limiting groove 111 .

[0038] By arranging the LNG container 2 near the bottom of the seawater container 1, the low temperature characteristics of LNG are utilized to freeze the seawater to achieve the purpose of seawater desalination. Compared with traditional desalination technology, it has higher energy efficiency and lower operating costs. The insulation cylinder 22 ensures that the low temperature environment of the LNG container 2 is maintained, thereby improving the desalination efficiency. The design of the rotating column 14 and the spiral scraper 141 in the seawater container 1 helps to evenly stir the seawater and promote the upward discharge of ice debris. The setting of the ice debris discharging lifting and shielding mechanism 4 and the ice debris discharging limiting mechanism 5 realizes the automatic control of the ice debris discharging, which is convenient for lifting and controlling the discharge of ice debris as needed, ensuring the stability and accuracy of the discharged ice debris, and facilitating the recovery and completion of the work. At the same time, the design of the auxiliary discharging mechanism 6 can assist the rapid and accurate discharge of ice debris, bringing a technological breakthrough to the field of seawater desalination.

[0039] Further improved, the top of the heat preservation cylinder 22 is symmetrically fixed with a support column 131, the top of the support column 131 is fixed with an extension plate 132, the top plate 13 is fixed between the extension plates 132, a movable hole 112 is opened in the middle of the cover plate 11, a shaft ring 143 is provided in the middle of the movable hole 112, and an extension frame 1431 is fixedly distributed on the outer wall of the shaft ring 143 and the upper end surface of the cover plate 11, the bottom of the rotating column 14 is rotatably connected with a shaft seat 142, the shaft seat 142 is fixedly arranged at the middle of the inner bottom of the seawater container 1, and the top of the rotating column 14 passes through the top plate 13 and is connected to a fixed bevel gear 140;

[0040] The symmetrical support column 131 and extension plate 132 are used to stably support the top plate 13 upward, the movable hole 112 is used to place the shaft ring 143, the multiple extension frames 1431 are used to stably support the shaft ring 143, the shaft ring 143 is used to stably support the rotation of the rotating column 14, and the shaft seat 142 is used to support the bottom of the rotating column 14 for stable rotation.

[0041] Further improved, the top of the fixed bevel gear 140 is connected with a driving mechanism 3, the driving mechanism 3 includes a driving motor 31, a fixing seat 33 and a driving bevel gear 34, the bottom of the driving motor 31 is fixedly provided with a base 311, the output end of the driving motor 31 is connected with a driving shaft 32, the driving shaft 32 penetrates and is rotatably connected to the inside of the fixing seat 33, the driving bevel gear 34 is fixedly arranged at the inner end of the driving shaft 32, and the driving bevel gear 34 is meshedly connected to the top of the fixed bevel gear 140;

[0042] The fixed bevel gear 140 is used to mesh with the driving bevel gear 34 to rotate, the driving motor 31 is used to drive and control the driving shaft 32 and the driving bevel gear 34 to rotate, and the fixing seat 33 is used to stably support the driving shaft 32 to rotate and reduce the shaking coefficient.

[0043] Further improved, the ice slag discharging lifting and shielding mechanism 4 includes a shielding plate 41, a limiting plate 411, a pressing plate 42, a connecting rod 43, a transverse plate 44, an electric hydraulic device 45 and a bracket 46. The bracket 46 is an inverted L-shaped plate structure fixedly arranged at one end of the top of the top plate 13, the electric hydraulic device 45 is fixedly arranged at the inner end of the bracket 46, the bottom of the electric hydraulic device 45 is connected with a hydraulic rod 451, the transverse plate 44 is fixedly arranged at the bottom of the hydraulic rod 451, the connecting rod 43 is fixedly arranged at both ends of the bottom of the transverse plate 44, the pressing plate 42 is fixedly arranged at the bottom of the connecting rod 43, the bottom of the pressing plate 42 is fixedly arranged near the inner end with a transfer column 421, the limiting plate 411 is fixedly arranged at the bottom of the transfer column 421, and the shielding plate 41 is fixedly arranged at the bottom of the limiting plate 411;

[0044] The bracket 46 with an inverted L-shaped plate structure is used to fix and support the electric hydraulic device 45 to the top of the top plate 13. The electric hydraulic device 45 is used to hydraulically control the hydraulic rod 451 and the lower components to lift and adjust the height. The cross plate 44 is used to drive the longitudinally distributed connecting rod 43 to lift and adjust at the same time. The pressure plate 42 and the adapter column 421 are used to drive the limit plate 411 and the shielding plate 41 to lift and adjust. The shielding plate 41 is used to close the ice debris outlet 121, and the limit plate 411 is used to press to the top of the limit groove 111.

[0045] As a further improvement, a limiting rod 422 is fixedly distributed on the top of the pressing plate 42, and a positioning plate 424 is fixedly distributed on the front and rear ends of the top plate 13. A limiting ring 423 is fixedly provided on the outer end of the positioning plate 424, and the limiting rod 422 penetrates and is connected to the inside of the limiting ring 423;

[0046] The limiting rod 422 is used to assist the pressure plate 42 in stable lifting and lowering adjustment, and the limiting ring 423 is used to limit the sliding limiting rod 422 .

[0047] Further improved, an auxiliary discharging mechanism 6 is provided below the baffle plate 41, and the auxiliary discharging mechanism 6 includes a second motor 61, a discharging flap 62, a rotating rod 621, a fixed plate 63, a transmission belt 65 and a second drive shaft disc 66. The second motor 61 is fixedly arranged above the limiting plate 411, and the second drive shaft disc 66 is fixedly arranged at the output end of the second motor 61. The right ends of the baffle plate 41 and the limiting plate 411 are provided with limited holes 412, and a groove 410 is provided in the middle of the bottom of the baffle plate 41. The fixed plate 63 is fixedly arranged at the two ends of the bottom of the baffle plate 41. The rotating rod 621 is rotatably connected between the fixing plates 63 and near the bottom. The discharging flap 62 is fixedly distributed on the outer side wall of the rotating rod 621 in a bent structure. The outer end of the rotating rod 621 is extended through and connected with a second driven shaft disc 64. A transmission belt 65 is connected between the second driven shaft disc 64 and the second drive shaft disc 66, and the transmission belt 65 is connected through and connected at the limiting hole 412.

[0048] Motor 2 61 is used to drive and control the driving shaft disk 2 66 to rotate, the transmission belt 65 is used to link the driving shaft disk 2 66 and the driven shaft disk 2 64 to rotate simultaneously, the limiting hole 412 limits the transmission of the transmission belt 65, the driven shaft disk 2 64 is used to drive the rotating rod 621 to rotate, the rotating rod 621 is used to drive the multiple groups of bent structured discharge flaps 62 to rotate, the discharge flaps 62 are used to discharge the ice debris smoothly, and the groove 410 is used to limit the movable adjustment of the discharge flaps 62.

[0049] Further improved, the ice slag discharging limiting mechanism 5 comprises a limiting frame 51, an extension frame 52 and a driving gear 53, the limiting frame 51 is fixedly arranged on both sides above and inside the limiting groove 111, the extension frame 52 is slidably connected to the upper part of the limiting frame 51, a slide groove 511 is provided in the middle of the inner rear part of the limiting frame 51, a through hole 512 is provided in the middle of the rear part of the limiting frame 51, a tooth plate 521 is fixedly arranged in the middle of the inner side of the extension frame 52, the tooth plate 521 is slidably connected to the slide groove 511, and the driving gear 53 passes through the through hole 512 and is meshedly connected to the inner end of the tooth plate 521;

[0050] The slide groove 511 is used to limit the lifting and sliding of the tooth plate 521 , the driving gear 53 is used to directly mesh and control the tooth plate 521 to adjust up and down, and the through hole 512 is used to limit the driving gear 53 .

[0051] Specifically, a fixed shaft 531 is fixedly provided at the side end of the driving gear 53, a driven shaft disc 532 is fixedly provided at the end of the fixed shaft 531, the inner end of the driven shaft disc 532 is connected to a driving shaft disc 542 through a transmission belt, a driving shaft rod 541 is fixedly provided at the middle of the driving shaft disc 542, and a motor 54 is connected to the end of the driving shaft rod 541, and the motor 54 is fixedly provided at the upper end of the cover plate 11;

[0052] A second shaft ring 533 is rotatably connected to the middle of the fixed shaft 531, and a support plate 5331 is fixedly disposed at the bottom of the second shaft ring 533, and the support plate 5331 is fixedly disposed at the upper end of the cover plate 11;

[0053] The motor 1 54 is used to control the rotation of the driving shaft 541 and the driving shaft disk 1 542. The driving shaft disk 1 542 is used to drive the driven shaft disk 1 532 and the fixed shaft 531 to rotate simultaneously. The support plate 5331 and the shaft ring 2 533 are used to stably support the rotation of the fixed shaft 531.

[0054] Working principle: After the device is installed, the driving motor 31 of the driving mechanism 3 is started first, and the driving shaft 32 and the driving bevel gear 34 are automatically controlled to rotate, and the meshing fixed bevel gear 140 drives the rotating column 14 to rotate. The rotating column 14 is supported on the shaft seat 142 and rotates stably, so that the spiral scraper 141 rotates the seawater in the seawater container 1, and the seawater leaks out through the leaking hole 1411, so that the seawater is mixed and stirred inside the seawater container 1;

[0055] After the movement is stable, the seawater is added to the LNG container 2 through the inlet and outlet connecting pipes 21 for freezing treatment, and the LNG container 2 is kept warm by the insulation cylinder 22;

[0056] After precooling, continue to add LNG to the LNG container 2, observe the amount of ice debris floating in the seawater container 1, and when there is a lot of ice debris, increase the output power of the drive motor 31 to discharge the ice debris from the seawater container 1 through the ice debris outlet 121, so that the LNG circulates automatically, and the discharged ice debris is processed to obtain fresh water through subsequent treatment to complete the working cycle;

[0057] The electric hydraulic device 45 of the ice slag discharging lifting and shielding mechanism 4 is started to automatically control the hydraulic rod 451 to drive the horizontal plate 44 and the connecting rod 43 to move up and down, and then the limit plate 411 and the shielding plate 41 are driven to move away from the ice slag outlet 121 through the pressing plate 42 and the transfer column 421 to facilitate the discharge of ice slag;

[0058] At the same time, the motor 2 61 of the auxiliary discharge mechanism 6 is started to automatically control the driving shaft disc 2 66 to rotate, and the driven shaft disc 2 64 and the rotating rod 621 are driven to rotate through the transmission belt 65, so that the multiple groups of discharge flaps 62 rotate to assist the ice slag to be discharged from the ice slag outlet 121;

[0059] At the same time, the motor 54 of the ice slag discharge limiting mechanism 5 is started to automatically control the driving shaft 541 and the driving shaft disk 542 to rotate, which are then linked to the rotation of the driven shaft disk 532 and the fixed shaft 531 through the transmission belt, and are stably supported and rotated by the shaft ring 2 533 and the support plate 5331, so that the driving gear 53 passes through the through hole 512 and engages the tooth plate 521, so that the extension frame 52 is located in the slide groove 511 inside the limit frame 51 and slides upward to expand the limit shielding area, so that the ice slag can be accurately output to the outside.

[0060] The seawater container 1 of the present invention, the cover plate 11, the limiting groove 111, the movable hole 112, the end plate 12, the ice slag outlet 121, the top plate 13, the support column 131, the extension plate 132, the rotating column 14, the scraper 141, the leaking hole 1411, the shaft seat 142, the shaft ring 143, the extension frame 1431, the fixed bevel gear 140, the LNG container 2, the inlet and outlet connecting pipes 21, the insulation cylinder 22, the driving mechanism 3, the driving motor 31, the base 311, the driving shaft 32, the fixing seat 33, the driving bevel gear 34, the ice slag discharging lifting shielding mechanism 4, the shielding plate 41, the groove 410, the limiting plate 411, the limiting hole 412, the pressing plate 42, the rotating Connecting column 421, limiting rod 422, limiting ring 423, positioning plate 424, connecting rod 43, horizontal plate 44, electric hydraulic device 45, hydraulic rod 451, bracket 46, ice slag discharging limiting mechanism 5, limiting frame 51, slide groove 511, through hole 512, extension frame 52, tooth plate 521, driving gear 53, fixed shaft 531, driven shaft disc 1 532, shaft ring 2 533, support plate 5331, motor 1 54, driving shaft rod 541, driving shaft disc 1 542, auxiliary discharging mechanism 6, motor 2 61, discharging flap 62, rotating rod 621, fixed plate 63, driven shaft disc 2 64, transmission belt 65, driving shaft disc 2 66, parts The components are all universal standard components or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. The problem solved by the present invention is that it is inconvenient to control the discharge of ice slag after freezing. It is not accurate to control the discharge of ice slag by controlling the speed of the motor alone, and it is difficult to accurately and stably discharge the ice slag, which may cause unfrozen seawater to be discharged at the same time. The present invention combines the above components with each other, and freezes the seawater by using the low temperature characteristics of LNG to achieve the purpose of seawater desalination by arranging the LNG container 2 near the bottom of the seawater container 1. Compared with the traditional desalination technology, it has more advantages. High energy efficiency and lower operating costs, the insulation cylinder 22 ensures that the low temperature environment of the LNG container 2 is maintained, thereby improving the desalination efficiency. The design of the rotating column 14 and the spiral scraper 141 in the seawater container 1 helps to evenly stir the seawater and promote the upward discharge of ice debris. The setting of the ice debris discharging lifting and shielding mechanism 4 and the ice debris discharging limiting mechanism 5 realizes the automatic control of the ice debris discharging, which is convenient for lifting and controlling the discharge of ice debris as needed, ensuring the stability and accuracy of the discharged ice debris, and facilitating the recovery and completion of the work. At the same time, the design of the auxiliary discharging mechanism 6 can assist the rapid and accurate discharge of ice debris, bringing a technological breakthrough to the field of seawater desalination.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A refrigeration seawater desalination device, comprising a seawater container (1) and an LNG container (2), characterized in that: The LNG container (2) is arranged outside and below the seawater container (1), the top two ends of the LNG container (2) are fixedly connected with inlet and outlet connecting pipes (21), and the outside of the LNG container (2) is wrapped with a heat preservation tube (22); An end plate (12) is fixedly provided on the upper end surface of the seawater container (1), a cover plate (11) is fixedly provided on the upper end of the end plate (12), the diameter of the end plate (12) is larger than the diameter of the cover plate (11), the diameter of the cover plate (11) is larger than the diameter of the seawater container (1), a rotating column (14) is rotatably connected in the middle of the seawater container (1), a spiral scraper (141) is fixedly provided on the outer wall of the rotating column (14), a circular array of water leakage holes (1411) is provided inside the scraper (141), the upper part of the rotating column (14) is connected to the middle of the cover plate (11), the front and rear ends of the cover plate (11) are both provided with ice slag outlets (121), and a limiting groove (111) is provided above the ice slag outlet (121); An ice-slag discharge lifting and shielding mechanism (4) is provided above the ice-slag outlet (121), and an ice-slag discharge limiting mechanism (5) is provided on the upper inner side of the limiting groove (111).

2. A refrigeration desalination device according to claim 1, characterized in that: The top of the heat preservation cylinder (22) is symmetrically fixed with a support column (131), the top of the support column (131) is fixed with an extension plate (132), a top plate (13) is fixed between the extension plates (132), a movable hole (112) is opened in the middle of the cover plate (11), a shaft ring (143) is provided in the middle of the movable hole (112), an extension frame (1431) is fixedly distributed on the outer side wall of the shaft ring (143) and the upper end surface of the cover plate (11), the bottom of the rotating column (14) is rotatably connected with a shaft seat (142), the shaft seat (142) is fixedly arranged at the middle of the inner bottom of the seawater container (1), and the top of the rotating column (14) passes through the top plate (13) and is connected with a fixed bevel gear (140).

3. A refrigeration desalination device according to claim 2, characterized in that: A driving mechanism (3) is connected above the fixed bevel gear (140), and the driving mechanism (3) comprises a driving motor (31), a fixing seat (33) and a driving bevel gear (34). A base (311) is fixedly provided at the bottom of the driving motor (31), and a driving shaft (32) is connected to the output end of the driving motor (31), and the driving shaft (32) passes through and is rotatably connected to the inside of the fixing seat (33). The driving bevel gear (34) is fixedly arranged at the inner end of the driving shaft (32), and the driving bevel gear (34) is meshingly connected to the top of the fixed bevel gear (140).

4. The refrigeration desalination device according to claim 2, characterized in that: The ice slag discharging lifting shielding mechanism (4) comprises a shielding plate (41), a limit plate (411), a pressure plate (42), a connecting rod (43), a transverse plate (44), an electric hydraulic device (45) and a bracket (46); the bracket (46) is an inverted L-shaped plate structure fixedly arranged at one end of the top of the top plate (13); the electric hydraulic device (45) is fixedly arranged at the inner side end of the bracket (46); and the bottom of the electric hydraulic device (45) is connected to a hydraulic rod. (451), the transverse plate (44) is fixedly arranged at the bottom of the hydraulic rod (451), the connecting rod (43) is fixedly arranged at the two ends of the bottom of the transverse plate (44), the pressure plate (42) is fixedly arranged at the bottom of the connecting rod (43), a transfer column (421) is fixedly arranged near the inner end of the bottom of the pressure plate (42), the limiting plate (411) is fixedly arranged at the bottom of the transfer column (421), and the shielding plate (41) is fixedly arranged at the bottom of the limiting plate (411).

5. A refrigeration desalination device according to claim 4, characterized in that: A limiting rod (422) is fixedly distributed on the top of the pressure plate (42), and positioning plates (424) are fixedly distributed at the front and rear ends of the top plate (13). A limiting ring (423) is fixedly provided on the outer end of the positioning plate (424), and the limiting rod (422) penetrates and is connected to the inside of the limiting ring (423).

6. The refrigeration desalination device according to claim 4, characterized in that: An auxiliary discharging mechanism (6) is provided below the shielding plate (41), and the auxiliary discharging mechanism (6) comprises a second motor (61), a discharging flap (62), a rotating rod (621), a fixing plate (63), a transmission belt (65) and a second drive shaft disc (66). The second motor (61) is fixedly arranged above the limiting plate (411), and the second drive shaft disc (66) is fixedly arranged at the output end of the second motor (61). The shielding plate (41) and the right end of the limiting plate (411) are provided with distributed limiting holes (412). The bottom of the shielding plate (41) A groove (410) is provided in the middle, the fixed plate (63) is fixedly arranged at the two ends of the bottom of the shielding plate (41), the rotating rod (621) is rotatably connected between the fixed plates (63) near the bottom, the discharging flap (62) is fixedly distributed on the outer wall of the rotating rod (621) in a bent structure, the outer end of the rotating rod (621) is extended through and connected with a driven shaft disc 2 (64), a transmission belt (65) is connected between the driven shaft disc 2 (64) and the driving shaft disc 2 (66), and the transmission belt (65) is connected through and connected to the limiting hole (412).

7. The refrigeration desalination device according to claim 1, characterized in that: The ice slag discharging limiting mechanism (5) comprises a limiting frame (51), an extension frame (52) and a driving gear (53); the limiting frame (51) is fixedly arranged on both sides above and on the inner side of the limiting groove (111); the extension frame (52) is slidably connected to the inner upper part of the limiting frame (51); a sliding groove (511) is provided in the middle of the inner rear part of the limiting frame (51); a through hole (512) is provided in the middle of the rear part of the limiting frame (51); a tooth plate (521) is fixedly arranged in the middle of the inner side of the extension frame (52); the tooth plate (521) is slidably connected to the sliding groove (511); and the driving gear (53) passes through the through hole (512) and is meshedly connected to the inner end of the tooth plate (521).

8. The refrigeration desalination device according to claim 7, characterized in that: A fixed shaft (531) is fixedly provided at the side end of the driving gear (53), a driven shaft disc (532) is fixedly provided at the end of the fixed shaft (531), the inner end of the driven shaft disc (532) is connected to a driving shaft disc (542) via a transmission belt, a driving shaft rod (541) is fixedly provided in the middle of the driving shaft disc (542), the end of the driving shaft rod (541) is connected to a motor (54), and the motor (54) is fixedly provided at the upper end of the cover plate (11); A second shaft ring (533) is rotatably connected in the middle of the fixed shaft (531), a support plate (5331) is fixedly provided at the bottom of the second shaft ring (533), and the support plate (5331) is fixedly provided at the upper end of the cover plate (11).

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