Rotary MVR evaporation system for seawater desalination treatment

Abstract

The application discloses a rotary MVR evaporation system for seawater desalination treatment and relates to the technical field of MVR evaporation, which comprises a pipe box, a heating cylinder is installed on the lower surface of the pipe box, a plurality of drainage devices are arranged in the heating cylinder, a plurality of partition plates are installed in the heating cylinder, a plurality of arc-shaped grooves are formed in the upper surfaces of the partition plates, moving pieces are installed in the arc-shaped grooves, an intercepting plate is installed at the bottom of the heating cylinder, a reciprocating piece is installed on the upper surface of the intercepting plate, the reciprocating piece is connected with the moving pieces, and a driving piece is engaged with the reciprocating piece. The reciprocating structure is installed on the partition plate, the reciprocating structure is connected with the moving structure through a supporting rod, the reciprocating structure drives the moving structure to reciprocate in the arc-shaped groove, steam is gradually transported from bottom to top between the plurality of partition plates, the steam transport amounts of the moving structures at different positions are consistent due to the fact that the plurality of moving structures are connected with each other through the supporting rod, and steam below the partition plate is uniformly transported to above the partition plate.

Description

Technical Field

[0001] This invention relates to the field of MVR evaporation technology, specifically to a rotary MVR evaporation system for seawater desalination. Background Technology

[0002] MVR system, short for Mechanical Vapor Recompression system, is a new type of high-efficiency and energy-saving evaporation equipment. MVR system is electrically driven and uses the secondary steam and its energy generated by the evaporation of the material itself. The secondary steam is compressed by a steam compressor to increase its enthalpy value and then sent to the heating chamber as a heat source, thereby reducing the demand for external energy. In some water-scarce areas, MVR system is often used to desalinate seawater by heating and evaporating seawater with steam to obtain desalinated seawater.

[0003] In the existing technology, steam is discharged into the heating cylinder through the air inlet pipe, and then heats and evaporates the seawater passing through the heat exchange tubes through heat exchange. However, because the contact efficiency between the steam and different heat exchange tubes after entering the heating cylinder is different, the seawater in different heat exchange tubes is heated to different degrees (i.e., the seawater in different heat exchange tubes is evaporated to different degrees), which leads to a decrease in seawater desalination efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rotary MVR evaporation system for seawater desalination to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotary MVR evaporation system for seawater desalination, comprising a tube box, a feed pipe installed on the upper surface of the tube box, a heating cylinder installed on the lower surface of the tube box, multiple drainage components communicating with the tube box being provided inside the heating cylinder, multiple partition plates installed inside the heating cylinder, multiple annular grooves formed on the upper surface of the partition plates, the drainage components being installed in the annular grooves, multiple arc-shaped grooves formed on the upper surface of the partition plates, movable components being installed in the arc-shaped grooves, an interception plate installed at the bottom of the heating cylinder, a reciprocating component installed on the upper surface of the interception plate, the reciprocating component being connected to the movable component, an air inlet pipe installed on the lower side of the annular surface of the heating cylinder, the end of the air inlet pipe away from the heating cylinder being connected to the output end of a compressed air fan, a driving component installed inside the air inlet pipe, the driving component engaging with the reciprocating component.

[0006] Furthermore, the drainage component includes a plurality of first horn tubes, the first horn tubes are installed in an annular groove, the uppermost first horn tube is connected to the pipe box, a heat exchange tube is provided between two first horn tubes, the lowermost heat exchange tube is installed at the bottom of the heating cylinder, a second horn tube is installed at the bottom of the heat exchange tube, the upper surface of the second horn tube is provided with a plurality of exhaust holes, and the second horn tube is installed inside the first horn tube.

[0007] Furthermore, a plurality of outer cylinders are mounted on the upper surface of the first horn tube, and the outer cylinders are disposed on the annular surface of the heat exchange tube.

[0008] Furthermore, the movable component includes an arc-shaped plate disposed within an arc-shaped groove. Multiple movable grooves are formed on both the upper and lower surfaces of the partition plate. An arc-shaped cylinder is inserted into each movable groove. The arc-shaped plate is installed within the arc-shaped cylinder. Multiple through holes are formed on the annular surface of the arc-shaped cylinder. A one-way valve is installed within each through hole. Support rods are installed between the multiple arc-shaped cylinders. The reciprocating component is connected to the support rods. Ventilation grooves are formed on both sides of the arc-shaped plate. One-way components are installed within the ventilation grooves, and the one-way components slide in contact with the inner wall of the arc-shaped groove.

[0009] Furthermore, the one-way component includes a hinge plate hinged within a venting groove. The end of the hinge plate away from the venting groove contacts an arc-shaped groove. A first elastic element is installed at the end of the hinge plate facing into the venting groove, and the end of the first elastic element away from the hinge plate is installed within the venting groove.

[0010] Furthermore, the reciprocating component includes multiple rotating rods, and rotating rods are installed on both the partition plate and the interceptor plate. A reciprocating threaded rod is installed between two adjacent rotating rods. A reciprocating block is installed on the annular surface of the reciprocating threaded rod. The reciprocating block is connected to the support rod. A first bevel gear is installed at the bottom of the lowest rotating rod, and the first bevel gear meshes with the driving component.

[0011] Furthermore, the drive component includes a bracket installed inside the air intake pipe. A connecting rod is rotatably connected to the side of the bracket facing the heating cylinder. Multiple fan blades are installed on the annular surface of the connecting rod. A second bevel gear is installed at the end of the connecting rod away from the bracket, and the second bevel gear meshes with the first bevel gear.

[0012] Furthermore, a groove is provided at the bottom of the heating cylinder, and a movable plate is slidably connected in the groove. A plurality of second elastic members are installed on the side of the movable plate facing the groove, and the end of the second elastic member away from the movable plate is installed in the groove.

[0013] Furthermore, an exhaust pipe is installed on the upper side of the annular surface of the heating cylinder, and a buffer chamber is installed at the end of the exhaust pipe away from the heating cylinder. A connecting pipe is installed between the buffer chamber and the input end of the compressor.

[0014] Furthermore, a storage chamber is installed at the bottom of the heating cylinder, and a connecting pipe is installed between the storage chamber and the buffer chamber.

[0015] This invention provides a rotary MVR evaporation system for seawater desalination, which has the following advantages:

[0016] 1. The present invention improves the seawater desalination efficiency by installing multiple drainage structures consisting of a first horn tube, a second horn tube, and a heat exchange tube between the tube box and the heating cylinder, and by installing the first horn tube on the partition plate to increase the contact area with steam, and by opening multiple vent holes on the second horn tube to discharge the steam generated in the seawater in a timely manner.

[0017] 2. This invention utilizes a reciprocating structure consisting of multiple rotating rods, reciprocating threaded rods, and reciprocating blocks installed on the partition plates. This reciprocating structure is connected to a moving structure consisting of an arc-shaped plate, an arc-shaped cylinder, and a one-way valve via support rods. The reciprocating structure drives the moving structure to move back and forth within the arc-shaped groove, thereby achieving gradual upward steam delivery between multiple partition plates. Furthermore, since the multiple moving structures are interconnected by support rods, their heights remain consistent during movement, resulting in uniform steam delivery at different positions. This ensures that steam below the partition plates is evenly delivered to the top of the partition plates, preventing uneven heating of the drainage structures at different locations and avoiding impact on seawater desalination efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a rotary MVR evaporation system for seawater desalination according to the present invention;

[0019] Figure 2 This is a schematic diagram of the assembly of the arc-shaped cylinder, reciprocating threaded rod, and partition plate of a rotary MVR evaporation system for seawater desalination according to the present invention.

[0020] Figure 3 This is a schematic diagram of the first horn tube, heat exchange tube, outer cylinder, and second horn tube of a rotary MVR evaporation system for seawater desalination according to the present invention.

[0021] Figure 4 This is an assembly diagram of the rotating rod, reciprocating block, first bevel gear, and reciprocating threaded rod of a rotary MVR evaporation system for seawater desalination according to the present invention.

[0022] Figure 5 This is a schematic diagram of the assembly of the fan blades, connecting rods, brackets, and second bevel gear of a rotary MVR evaporation system for seawater desalination according to the present invention.

[0023] Figure 6 This is a schematic diagram of the assembly of the partition plate, intercepting plate, and moving plate of a rotary MVR evaporation system for seawater desalination in the heating cylinder according to the present invention.

[0024] Figure 7 This is a schematic diagram of the assembly of the arc plate and arc cylinder of a rotary MVR evaporation system for seawater desalination according to the present invention.

[0025] In the diagram: 1. Pipe box; 2. Feed pipe; 3. Exhaust pipe; 4. Buffer chamber; 5. Connecting pipe; 6. Storage chamber; 7. Compressor; 8. Air inlet pipe; 9. Heating cylinder; 10. Divider plate; 11. One-way valve; 12. Arc-shaped cylinder; 13. Support rod; 14. First trumpet cylinder; 15. Heat exchange tube; 16. Reciprocating threaded rod; 17. Outer cylinder; 18. Second trumpet cylinder; 19. Exhaust port; 20. Rotating rod; 21. Reciprocating block; 22. First bevel gear; 23. Second bevel gear; 24. Fan blade; 25. Connecting rod; 26. Support; 27. Interceptor plate; 28. Moving plate; 29. ​​Second elastic element; 30. Arc-shaped plate; 31. First elastic element; 32. Hinge plate; 33. Connecting pipe. Detailed Implementation

[0026] Please see Figures 1 to 7 The present invention provides a technical solution: a rotary MVR evaporation system for seawater desalination, comprising a tube box 1, a feed pipe 2 installed on the upper surface of the tube box 1, the feed pipe 2 being connected to a seawater conveying device, a heating cylinder 9 installed on the lower surface of the tube box 1, a plurality of first horn tubes 14 disposed inside the heating cylinder 9, wherein the uppermost first horn tube 14 is connected to the tube box 1, a plurality of partition plates 10 are installed inside the heating cylinder 9, a plurality of annular grooves are formed on the upper surface of the partition plates 10, the remaining first horn tubes 14 are installed in the annular grooves, a heat exchange tube 15 is disposed between two first horn tubes 14, the lowermost heat exchange tube 15 is installed at the bottom of the heating cylinder 9, a second horn tube 18 is installed at the bottom of the heat exchange tube 15, a plurality of vent holes 19 are formed on the upper surface of the second horn tube 18, the second horn tube 18 is installed inside the first horn tube 14, and a plurality of outer cylinders 17 are installed on the upper surface of the first horn tube 14, the outer cylinders 17 being disposed on the annular surface of the heat exchange tube 15, the function of the outer cylinders 17 being to prevent liquid from overflowing from the first horn tubes 14.

[0027] By installing multiple drainage structures consisting of a first horn tube 14, a second horn tube 18, and a heat exchange tube 15 between the tube box 1 and the heating cylinder 9, and by installing the first horn tube 14 on the partition plate 10, the contact area with steam is increased. Multiple vent holes 19 are opened on the second horn tube 18, and the steam generated in the seawater is discharged in time through the vent holes 19, thereby improving the seawater desalination efficiency.

[0028] The upper surface of the partition plate 10 has multiple arc-shaped grooves, and an arc-shaped plate 30 is installed in each of the arc-shaped grooves. Both the upper and lower surfaces of the partition plate 10 have multiple movable grooves, and an arc-shaped cylinder 12 is inserted into each of the movable grooves. The arc-shaped plate 30 is installed inside the arc-shaped cylinder 12. The annular surface of the arc-shaped cylinder 12 has multiple through holes, and a one-way valve 11 is installed in each of the through holes. The one-way valve 11 installed on the arc-shaped cylinder 12 below the partition plate 10 only allows outside air to enter the arc-shaped cylinder 12. The arc-shaped cylinder 12 above the partition plate 10 has... The one-way valve 11 allows air to escape from the arc-shaped cylinder 12. Support rods 13 are installed between multiple arc-shaped cylinders 12. Ventilation grooves are provided on both sides of the arc-shaped plate 30. A hinge plate 32 is hinged in the ventilation groove. The end of the hinge plate 32 away from the ventilation groove is in contact with the arc-shaped groove. A first elastic element 31 is installed on the end of the hinge plate 32 facing the ventilation groove. The first elastic element 31 is a spring. The first elastic element 31 is in the normal state. The end of the first elastic element 31 away from the hinge plate 32 is installed in the ventilation groove.

[0029] A baffle plate 27 is installed at the bottom of the heating cylinder 9. A rotating rod 20 is installed on both the partition plate 10 and the baffle plate 27. A reciprocating threaded rod 16 is installed between two adjacent rotating rods 20. A reciprocating block 21 is installed on the annular surface of the reciprocating threaded rod 16. The reciprocating block 21 is connected to the support rod 13. An air inlet pipe 8 is installed on the lower side of the annular surface of the heating cylinder 9. The end of the air inlet pipe 8 away from the heating cylinder 9 is connected to the output end of the compressor 7. A bracket 26 is installed inside the air inlet pipe 8. A rotating rod 20 is rotatably connected to the side of the bracket 26 facing the inside of the heating cylinder 9. Multiple fan blades 24 are installed on the annular surface of the rotating rod 20. A first bevel gear 22 is installed at the bottom of the lowest rotating rod 20. A second bevel gear 23 is installed at the end of the rotating rod 20 away from the bracket 26. The second bevel gear 23 meshes with the first bevel gear 22.

[0030] The steam entering through the intake pipe 8 drives the fan blade 24 to rotate. The rotation of the fan blade 24 drives the connecting rod 25 and the second bevel gear 23 to rotate. The second bevel gear 23 drives the first bevel gear 22 to rotate. The rotation of the first bevel gear 22 drives the connecting rod 25 to rotate. The rotation of the connecting rod 25 drives the reciprocating threaded rod 16 to rotate. The rotation of the reciprocating threaded rod 16 drives the reciprocating block 21 to move up and down. The up and down movement of the reciprocating block 21 drives the moving structure composed of the arc plate 30, the arc cylinder 12 and the one-way valve 11 to move back and forth through the support rod 13.

[0031] By installing a reciprocating structure consisting of multiple rotating rods 20, reciprocating threaded rods 16, and reciprocating blocks 21 on the partition plate 10, and connecting the reciprocating structure to a moving structure consisting of an arc plate 30, an arc cylinder 12, and a one-way valve 11 via a support rod 13, the reciprocating structure drives the moving structure to move back and forth within the arc groove. This allows steam to be gradually transported from bottom to top among the multiple partition plates 10. Since the multiple moving structures are interconnected by the support rod 13, their heights are consistent during movement, resulting in consistent steam delivery at different positions. This ensures that steam below the partition plate 10 is evenly transported to above the partition plate 10, thus preventing uneven heating of the drainage structure at different positions and avoiding impact on seawater desalination efficiency.

[0032] A groove is provided at the bottom of the heating cylinder 9, and a movable plate 28 is slidably connected in the groove. Multiple second elastic elements 29 are installed on the side of the movable plate 28 facing the groove. The second elastic elements 29 are springs. In the normal state, the end of the second elastic element 29 away from the movable plate 28 is installed in the groove. When the lowermost movable structure moves downward, the steam entering the heating cylinder 9 is temporarily buffered by the cooperation of the movable plate 28 and the second elastic elements 29, thereby preventing the steam from failing to enter the heating cylinder 9 and causing the reciprocating structure to fail to rotate.

[0033] An exhaust pipe 3 is installed on the upper side of the annular surface of the heating cylinder 9. A buffer chamber 4 is installed at the end of the exhaust pipe 3 away from the heating cylinder 9. The buffer chamber 4 is used to temporarily store steam. A connecting pipe 33 is installed between the buffer chamber 4 and the input end of the compressor 7. When the compressor 7 needs to enter steam, the steam in the buffer chamber 4 is transported to the compressor 7 through the connecting pipe 33.

[0034] A collection chamber 6 is installed at the bottom of the heating cylinder 9. A connecting pipe 5 is installed between the collection chamber 6 and the buffer chamber 4. The buffer chamber 4 is used to store the desalinated waste, while the connecting pipe 33 transports the excess steam in the collection chamber 6 back to the buffer chamber 4.

[0035] In summary, this rotary MVR evaporation system for seawater desalination first starts by starting the compressor 7 to deliver compressed steam to the heating cylinder 9. During the delivery process, the compressor 7 drives the fan blades 24 to rotate. The rotation of the fan blades 24 drives the connecting rod 25 and the second bevel gear 23 to rotate. The second bevel gear 23 drives the first bevel gear 22 to rotate. The rotation of the first bevel gear 22 drives the rotating rod 20 to rotate. The rotation of the rotating rod 20 drives the reciprocating threaded rod 16 to rotate. The rotation of the reciprocating threaded rod 16 drives the reciprocating block 21 to move up and down. The up and down movement of the reciprocating block 21 drives the moving structure composed of the arc plate 30, the arc cylinder 12 and the one-way valve 11 to move back and forth through the support rod 13.

[0036] When the moving structure moves upward, the arc-shaped cylinder 12 below the partition plate 10 moves into the moving groove, reducing the internal space of the lower arc-shaped cylinder 12. The arc-shaped cylinder 12 above the partition plate 10 moves out of the moving groove, increasing the internal space of the upper arc-shaped cylinder 12. Steam in the arc-shaped cylinder 12 below the partition plate 10 flows into the arc-shaped cylinder 12 above the partition plate through the hinge plate 32 installed in the venting groove. When the moving structure moves downward again, the hinge plate 32 closes the venting groove. Steam below the partition plate 10 enters the lower arc-shaped cylinder 12 through the one-way valve 11, and steam above the partition plate 10 is discharged from the arc-shaped cylinder 12 through the one-way valve 11, thereby transporting the steam below the partition plate 10 to the upper part of the partition plate 10. Since multiple arc-shaped cylinders 12 are connected by support rods 13, the moving distance of arc-shaped cylinders 12 at different positions is the same, that is, the steam intake and discharge of arc-shaped cylinders 12 at different positions are the same, thereby ensuring that the heat exchange tubes 15 and the first horn tube 14 at different positions are uniformly heated.

[0037] Since the first horn tube 14 is installed on the partition plate 10, the steam comes into contact with the first horn tube 14 when it enters the arc-shaped tube 12, thereby increasing the heating efficiency of the water flowing into the first horn tube 14. The heated water is discharged directly through the multiple exhaust holes 19 opened on the second horn tube 18 and heats the heat exchange tube 15 above and the first horn tube 14.

[0038] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rotary MVR evaporation system for seawater desalination, comprising a tube box (1), characterized in that, A feed pipe (2) is installed on the upper surface of the tube box (1), and a heating cylinder (9) is installed on the lower surface of the tube box (1). Multiple drainage components communicating with the tube box (1) are provided inside the heating cylinder (9). Multiple partition plates (10) are installed inside the heating cylinder (9). Multiple annular grooves are formed on the upper surface of the partition plates (10), and the drainage components are installed in the annular grooves. Multiple arc-shaped grooves are formed on the upper surface of the partition plates (10), and movable components are installed in the arc-shaped grooves. An interceptor plate (27) is installed at the bottom of the heating cylinder (9), and a reciprocating component is installed on the upper surface of the interceptor plate (27). The component is connected to the moving component. An air inlet pipe (8) is installed on the lower side of the annular surface of the heating cylinder (9). The end of the air inlet pipe (8) away from the heating cylinder (9) is connected to the output end of the compressor (7). A driving component is installed inside the air inlet pipe (8). The driving component meshes with the reciprocating component. The moving component includes an arc plate (30). The arc plate (30) is set in an arc groove. Multiple moving grooves are opened on the upper and lower surfaces of the partition plate (10). An arc cylinder (12) is inserted into the moving groove. The arc plate (30) is installed inside the arc cylinder (12). The arc cylinder (12) Multiple through holes are provided on the annular surface, and one-way valves (11) are installed in the through holes. Support rods (13) are installed between the multiple arc-shaped cylinders (12). The reciprocating component is connected to the support rods (13). Ventilation grooves are provided on both sides of the arc-shaped plate (30). One-way components are installed in the ventilation grooves. The one-way components slide in contact with the inner wall of the arc-shaped grooves. The one-way components include a hinge plate (32). The hinge plate (32) is hinged in the ventilation groove. The end of the hinge plate (32) away from the ventilation groove is in contact with the arc-shaped groove. A first elastic element (31) is installed on the end of the hinge plate (32) facing the ventilation groove. The first elastic element (31) is installed in the ventilation groove at one end away from the hinge plate (32). The reciprocating element includes multiple rotating rods (20). Rotating rods (20) are installed on both the partition plate (10) and the interceptor plate (27). A reciprocating threaded rod (16) is installed between two adjacent rotating rods (20). A reciprocating block (21) is installed on the annular surface of the reciprocating threaded rod (16). The reciprocating block (21) is connected to the support rod (13). A first bevel gear (22) is installed at the bottom of the lowest rotating rod (20). The first bevel gear (22) meshes with the driving element.

2. The rotary MVR evaporation system for seawater desalination according to claim 1, characterized in that, The drainage component includes multiple first horn tubes (14), each first horn tube (14) is installed in an annular groove, the uppermost first horn tube (14) is connected to the pipe box (1), a heat exchange tube (15) is provided between two first horn tubes (14), the lowermost heat exchange tube (15) is installed at the bottom of the heating cylinder (9), a second horn tube (18) is installed at the bottom of the heat exchange tube (15), multiple exhaust holes (19) are opened on the upper surface of the second horn tube (18), and the second horn tube (18) is installed inside the first horn tube (14).

3. The rotary MVR evaporation system for seawater desalination according to claim 2, characterized in that, Multiple outer cylinders (17) are installed on the upper surface of the first horn tube (14), and the outer cylinders (17) are arranged on the annular surface of the heat exchange tube (15).

4. The rotary MVR evaporation system for seawater desalination according to claim 1, characterized in that, The drive unit includes a bracket (26), which is installed inside the air intake pipe (8). A connecting rod (25) is rotatably connected to the side of the bracket (26) facing the heating cylinder (9). Multiple fan blades (24) are installed on the annular surface of the connecting rod (25). A second bevel gear (23) is installed at the end of the connecting rod (25) away from the bracket (26). The second bevel gear (23) meshes with the first bevel gear (22).

5. A rotary MVR evaporation system for seawater desalination according to claim 1, characterized in that, The heating cylinder (9) has a groove at its bottom, and a movable plate (28) is slidably connected in the groove. A plurality of second elastic elements (29) are installed on the side of the movable plate (28) facing the groove. The end of the second elastic element (29) away from the movable plate (28) is installed in the groove.

6. A rotary MVR evaporation system for seawater desalination according to claim 1, characterized in that, An exhaust pipe (3) is installed on the upper side of the annular surface of the heating cylinder (9). A buffer chamber (4) is installed at the end of the exhaust pipe (3) away from the heating cylinder (9). A connecting pipe (33) is installed between the buffer chamber (4) and the input end of the compressor (7).

7. A rotary MVR evaporation system for seawater desalination according to claim 6, characterized in that, The bottom of the heating cylinder (9) is equipped with a storage chamber (6), and a connecting pipe (5) is installed between the storage chamber (6) and the buffer chamber (4).

Images