Hydrogen fluoride condenser for recycling waste electrolyte

Abstract

The invention discloses a hydrogen fluoride condenser for waste electrolyte recycling, and belongs to the field of steam condensation, the hydrogen fluoride condenser comprises a shell internally provided with a cavity and two side plates fixedly connected to the inner walls of two openings of the cavity, two partition plates are symmetrically and fixedly connected to the inner wall of the shell, and a closed cavity is formed between the two partition plates; a liquid outlet I and a liquid inlet I which are communicated with the closed cavity are respectively formed in the upper end and the lower end of the shell, and an air inlet and an air outlet which are communicated with the cavity are respectively formed in the upper end of the shell; the cooling medium not only flows between the inner pipe and the outer pipe, but also flows outside the outer pipe, the total area of heat exchange is increased through the design of the multiple layers of cooling media, more heat can be conducted into the cooling media from the gas pipeline, even if the temperature of part of the cooling media rises, high cooling efficiency can still be kept through multi-layer heat exchange, and the cooling efficiency is improved. And it is ensured that the temperature of the cooling medium does not sharply rise to influence the cooling effect of the upper pipeline.

Description

Technical Field

[0001] The invention relates to the field of steam condensation, and more particularly to a hydrogen fluoride condenser for recycling waste electrolyte. Background Art

[0002] Waste electrolytes generally refer to electrolyte solutions or electrolyte materials produced in industrial, electrochemical or experimental processes that no longer have effective uses or do not meet usage standards. There are many methods for recycling waste electrolytes, and evaporation concentration is one of them. The evaporation concentration method mainly removes solvents and moisture from waste electrolytes and recovers useful components. However, if the waste electrolyte contains hydrogen fluoride (such as some aluminum electrolysis, battery electrolytes or by-products of fluorine-containing chemical reactions), these hydrogen fluoride gases may evaporate into a gaseous state during heating or processing. Therefore, a hydrogen fluoride condenser is needed to condense these gaseous hydrogen fluoride into a liquid state through cooling for recycling.

[0003] The prior art (Chinese utility model with announcement number CN204240823U) discloses a hydrogen fluoride condenser. When the gas passes through the condenser tube, the tube wall of the condenser tube exchanges heat with the cooling water to realize the condensation of the hydrogen fluoride gas in the condenser tube. The heat exchange and condensation principle is the same as that of the surface condenser. In the actual use of the condenser, in order to improve the gas processing and condensation efficiency, a plurality of condenser tubes are arranged in the condenser. Since the temperature of the cooling medium will increase during the heat exchange between the cooling medium and the condenser tube, the increased cooling medium will flow upward inside the condenser, so that heat convection will occur, resulting in different temperatures between the upper and lower parts of the cooling medium inside the condenser, resulting in a decrease in the cooling effect of the condenser tube located in the upper area of ​​the cooling medium. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a hydrogen fluoride condenser for recycling waste electrolyte.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A hydrogen fluoride condenser for recycling waste electrolyte, comprising a shell with a cavity therein and two side plates fixed to the inner wall at two openings of the cavity, two partitions symmetrically fixed to the inner wall of the shell and a closed chamber formed between the two partitions, and a liquid discharge port 1 and a liquid inlet 1 connected to the closed chamber are respectively opened at the upper end and the lower end of the shell, an air inlet and an air outlet connected to the cavity are respectively opened at the upper end of the shell, and two liquid discharge ports 2 connected to the cavity are symmetrically opened at the lower end of the shell;

[0007] A plurality of heat exchange parts are connected between the two partitions, and the heat exchange parts include an inner heat exchange tube whose two ends are rotatably connected to the inside of the two partitions, an outer heat exchange tube which is sleeved on the outside of the inner heat exchange tube and fixed to one side of the two partitions at both ends, and a second liquid inlet and a third liquid discharge port respectively opened at both ends of the outer surface of the outer heat exchange tube. The upper end of the shell is provided with a plurality of pipeline interfaces for connecting to the plurality of second liquid inlets and third liquid discharge ports through pipelines.

[0008] Furthermore, the heat exchange outer tube includes a throat, a liquid inlet end and a diffuser liquid outlet end integrally formed at both ends of the throat, the second liquid inlet is opened on the outer surface of the liquid inlet end, and the third liquid outlet is opened on the outer surface of the diffuser liquid outlet end.

[0009] Furthermore, spiral blades are fixedly connected to the outer surface of the inner heat exchange tube.

[0010] Furthermore, a conical inner cavity is provided inside the heat exchange inner tube.

[0011] Furthermore, a plurality of rotating seals 1 and 2 are fixedly connected to the inside of the two partitions, and the rotating seals 1 and 2 are sleeved on the outside of the rotating inner tube and are used to dynamically seal the rotating inner tube.

[0012] Furthermore, a flow promotion unit is connected to the inside of the shell, and the flow promotion unit includes a driving part connected between one of the side plates and the adjacent partition plate and a sprocket wheel 2 fixed to one end of the multiple rotating inner tubes and transmission connected to the driving part.

[0013] Furthermore, the driving part includes a plurality of rotating shafts whose two ends are respectively rotatably connected to one side of one of the side plates and one side of one of the partitions, a plurality of sprockets 1 respectively fixedly connected to the outer surfaces of the plurality of rotating shafts, a chain belt 1 transmission connecting sprocket 1 with sprocket 2, and a plurality of motors are fixedly connected to the other side of the side plate, and the output shafts of the plurality of motors pass through the side plate and are respectively fixedly connected to one end of the plurality of rotating shafts.

[0014] Furthermore, an in-tube descaling assembly is also connected to the inside of the shell, and the in-tube descaling assembly includes multiple support rods located inside multiple heat exchange inner tubes, multiple sleeve rods that are movably sleeved on the outside of the multiple support rods, and bristles fixed to the outside of the multiple sleeve rods, and the two ends of the support rods are respectively connected to two side plates.

[0015] Furthermore, a transmission part for driving the support rod to rotate is connected to one side of one of the side panels, and the transmission part includes a plurality of grooves 1 opened on one side of the side panel, a plurality of sprockets 3 rotatably connected to the inner wall of the plurality of grooves 1, a chain belt 2 connecting the plurality of sprockets 3 arranged vertically, a rotating seat respectively fixed to one side of the plurality of sprockets 3, a plurality of gears 1 respectively fixed to the outside of the plurality of rotating shafts, a plurality of gears 2 respectively sleeved on the outside of the plurality of rotating seats adjacent to the rotating shafts and meshing with the gear 1, and one end of the support rod is fixed to one side of the rotating seat.

[0016] Furthermore, a spring is sleeved on the outside of one end of the support rod, and a ring body is fixedly connected to the outer surface of one end of the sleeve rod, the two ends of the spring are respectively connected to the ring body and one side of the rotating seat, and a plurality of flanges are fixedly connected to the other end of the sleeve rod, and a plurality of flanges are each provided with a slope one on one side, one of the side panels is provided with a plurality of grooves two for accommodating the flanges, and a slope two matching the slope one is provided on the inner wall of the groove two.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This scheme is provided with an outer heat exchange tube and an inner heat exchange tube located inside the outer heat exchange tube. By injecting cooling medium between the outer heat exchange tube and the inner heat exchange tube, cooling medium also flows in the closed chamber between the two partitions. The cooling medium flows not only between the inner tube and the outer tube, but also flows outside the outer tube. The design of multi-layer cooling medium increases the total area of ​​heat exchange, which helps more heat to be transferred from the pipeline to the cooling medium. Even if the temperature of part of the cooling medium rises, a high cooling efficiency can still be maintained through multi-level heat exchange, thereby reducing the gas temperature. The cooling medium between the inner tube and the outer tube will first absorb heat, while the cooling medium outside the outer tube will further absorb heat. Even if the temperature of the cooling medium between the inner tube and the outer tube rises, the cooling medium outside the outer tube can continue to absorb heat, ensuring that the temperature of the cooling medium will not rise sharply to the extent of affecting the cooling effect of the upper pipeline.

[0019] (2) This solution is provided with a flow promotion unit. The spiral blades are arranged on the outer surface of the heat exchange inner tube, which can effectively increase the heat exchange surface area and improve the heat exchange efficiency. The heat exchange inner tube is driven by the driving part to rotate in the heat exchange outer tube. The heat exchange inner tube rotates and the spiral blades change the flow direction of the cooling medium flowing through the spiral blades to enhance the turbulence. This can not only reduce the temperature difference on the surface of the pipe and avoid excessive temperature gradient of the cooling medium, but also enhance the turbulence of the cooling medium and further improve the heat exchange process. The rotation can also avoid the "dead zone" of the cooling medium caused by uneven flow, thereby improving the overall cooling efficiency. At the same time, the rotation of the heat exchange inner tube can effectively avoid the formation of deposits (such as scaling or impurities) on the inner wall of the pipe. Especially when the gas is converted into liquid during the condensation process, scale, grease or other substances are often deposited on the surface of the pipe. Through rotation, the deposits on the inner wall of the pipe will be continuously broken up or removed, thereby reducing the scaling problem and extending the service life of the condenser.

[0020] (3) This solution is provided with an in-pipe descaling component. The driving part drives the support rod and the sleeve rod to rotate through the transmission part. The rotation of the sleeve rod can continuously clean the dust, impurities or solid particles on the inner wall of the pipe through the bristles. This dynamic cleaning method can prevent the pipe from being blocked due to the accumulation of impurities, and avoid the impurities adhering to the inner wall of the heat exchange inner pipe affecting the heat exchange efficiency. At the same time, the rotating bristles will disturb the gas flow in the heat exchange inner pipe while cleaning, breaking the static boundary layer between the gas and the pipe wall, making the heat exchange between the airflow and the pipe wall more uniform and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the second liquid discharge port and the first liquid inlet of the present invention;

[0023] Figure 3 is a cross-sectional view of the present invention;

[0024] Figure 4 is a cross-sectional view of a heat exchange portion of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the driving part of the present invention;

[0026] Figure 6 It is a schematic diagram of the transmission structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the sprocket wheel three and the chain belt two of the present invention;

[0028] Figure 8 For the present invention Figure 6 A schematic diagram of the structure enlargement in the middle;

[0029] Fig. 9 It is a schematic diagram of the sleeve rod and bristle structure of the present invention;

[0030] Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the structure at B in the middle;

[0031] Fig.11 It is a schematic diagram of the structure of the groove 2 and the inclined surface 2 of the present invention;

[0032] Fig.12 For the present invention Fig.11 Enlarged schematic diagram of the structure at point C in the middle.

[0033] Description of the numbers in the figure:

[0034] 1. Shell; 11. Air inlet; 12. Air outlet; 13. Liquid discharge port 1; 14. Pipeline interface; 15. Liquid discharge port 2; 16. Liquid inlet port 1; 2. Side plate; 3. Baffle; 4. Heat exchange unit; 41. Heat exchange outer tube; 411. Liquid inlet end; 412. Throat; 413. Diffuser liquid outlet end; 42. Heat exchange inner tube; 421. Conical inner cavity; 422. Spiral blade; 43. Liquid inlet port 2; 44. Liquid discharge port 3; 5. Flow promotion unit; 51. Drive unit; 511. Motor; 512. Rotating shaft; 51 3. Sprocket one; 514. Chain one; 52. Rotary seal one; 53. Rotary seal two; 54. Sprocket two; 55. Transmission unit; 551. Groove one; 552. Rotating seat; 553. Gear one; 554. Gear two; 555. Sprocket three; 556. Chain two; 56. In-pipe descaling assembly; 561. Support rod; 562. Sleeve rod; 563. Bristles; 564. Spring; 565. Ring body; 566. Inclined surface one; 567. Flange; 568. Groove two; 569. Inclined surface two. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 12A hydrogen fluoride condenser for recycling waste electrolytes, comprising a shell 1 with a cavity therein and two side plates 2 fixed to the inner wall at two openings of the cavity, two partitions 3 symmetrically fixed to the inner wall of the shell 1 and a closed chamber formed between the two partitions 3, and a liquid discharge port 13 and a liquid inlet 16 connected to the closed chamber are respectively opened at the upper and lower ends of the shell 1, an air inlet 11 and an air outlet 12 connected to the cavity are respectively opened at the upper end of the shell 1, and two liquid discharge ports 15 connected to the cavity are symmetrically opened at the lower end of the shell 1;

[0037] A plurality of heat exchange parts 4 are connected between the two partitions 3, and the heat exchange parts 4 include an inner heat exchange tube 42 whose two ends are rotatably connected to the inside of the two partitions 3, an outer heat exchange tube 41 which is sleeved on the outside of the inner heat exchange tube 42 and fixedly connected to one side of the two partitions 3 at both ends, and a second liquid inlet 43 and a third liquid discharge port 44 respectively opened at both ends of the outer surface of the outer heat exchange tube 41. The upper end of the shell 1 is provided with a plurality of pipe interfaces 14 for connecting to the plurality of second liquid inlets 43 and third liquid discharge ports 44 through pipes.

[0038] The heat exchange outer tube 41 includes a throat 412, a liquid inlet end 411 and a diffuser liquid outlet end 413 integrally formed at both ends of the throat 412, the second liquid inlet 43 is arranged on the outer surface of the liquid inlet end 411, and the third liquid outlet 44 is arranged on the outer surface of the diffuser liquid outlet end 413. The heat exchange outer tube 41 adopts the structural design of the liquid inlet end 411, the throat 412 and the diffuser liquid outlet end 413. Such a design can increase the flow rate of the cooling medium when it passes through the reduced throat 412 from the liquid inlet end 411, thereby improving the flow rate of the cooling medium and improving the heat exchange cooling efficiency.

[0039] The outer surface of the heat exchange inner tube 42 is fixedly connected with a spiral blade 422 . The spiral blade 422 is arranged on the outer surface of the heat exchange inner tube 42 to effectively increase the heat exchange surface area and improve the heat exchange efficiency.

[0040] A conical inner cavity 421 is defined inside the heat exchange inner tube 42 .

[0041] By adopting the above technical solution, hydrogen fluoride gas enters the shell 1 from the air inlet 11, and enters the conical inner cavity 421 inside the heat exchange inner tube 42 from one end of the heat exchange inner tube 42, and is discharged from the other end of the heat exchange inner tube 42 after passing through the conical inner cavity 421. The discharged gas is discharged from the air outlet 12, and the cooling medium (water or other cooling liquid) enters the closed chamber between the two partitions 3 from the liquid inlet 16. The pipeline interface 14 is externally connected to the liquid inlet pipeline and the liquid return pipeline. The pipeline interface 14 is connected to the liquid inlet pipeline and the liquid return pipeline. The pipeline is connected to the second liquid inlet 43 and the third liquid discharge port 44 (the pipeline is not shown in the drawings of the specification of this application). The cooling medium in the liquid inlet pipeline enters the second liquid inlet 43 from the pipeline interface 14 through the pipeline, enters between the heat exchange outer tube 41 and the heat exchange inner tube 42 from the second liquid inlet 43, and is discharged from the third liquid discharge port 44 into the return liquid pipeline. The cooling medium not only flows between the heat exchange outer tube 41 and the heat exchange inner tube 42, but also flows outside the heat exchange outer tube 41. The design of the multi-layer cooling medium increases the heat exchange efficiency. The total area helps more heat to be transferred from the pipeline to the cooling medium. Even if the temperature of part of the cooling medium rises, a high cooling efficiency can still be maintained through multi-level heat exchange, thereby reducing the gas temperature. The cooling medium between the heat exchange outer tube 41 and the heat exchange inner tube 42 will first absorb heat, and the cooling medium outside the heat exchange outer tube 41 will further absorb heat. Even if the temperature of the cooling medium between the heat exchange outer tube 41 and the heat exchange inner tube 42 rises, the cooling medium outside the heat exchange outer tube 41 can continue to absorb heat, ensuring that the temperature of the cooling medium will not rise sharply to the extent that affects the cooling effect of the upper pipeline. When the hydrogen fluoride gas passes through the conical inner cavity 421, it can exchange heat with the cooling medium to realize the condensation of the hydrogen fluoride gas in the heat exchange inner tube 42. After the cooling medium cools the hydrogen fluoride gas in the heat exchange inner tube 42, since the inner cross-section of the conical inner cavity 421 is an inclined surface, the condensed water formed after the gas is condensed by the heat exchange inner tube 42 will be discharged from one end of the heat exchange inner tube 42 and discharged through the drainage port 15 on one side.

[0042] like Figure 4 and Figure 5 As shown, the interior of the two partitions 3 is fixedly connected with a plurality of rotating seals 1 52 and rotating seals 2 53 (rotating seal 1 52 and rotating seal 2 53 both adopt rotating shaft type seals, which are commonly used means of dynamic sealing of rotating shafts and are mature existing technologies, and are not described in detail here. The function of the rotating seals 1 52 and rotating seals 2 53 is to prevent the cooling medium between the two partitions 3 from flowing out from the connection between the partition 3 and the heat exchange inner tube 42), and the rotating seals 1 52 and rotating seals 2 53 are both sleeved on the outside of the rotating inner tube and are used to dynamically seal the rotating inner tube.

[0043] The shell 1 is also connected to a flow promotion unit 5 , and the flow promotion unit 5 includes a driving part 51 connected between one of the side plates 2 and the adjacent partition plate 3 , and a sprocket 54 fixed to one end of a plurality of rotating inner tubes and transmission-connected to the driving part 51 .

[0044] The driving part 51 includes a plurality of rotating shafts 512 whose two ends are respectively rotatably connected to one side of one of the side plates 2 and one side of one of the partition plates 3, a plurality of sprocket wheels 513 respectively fixedly connected to the outer surfaces of the plurality of rotating shafts 512, and a chain belt 514 that transmission connects the sprocket wheel 1 513 with the sprocket wheel 2 54, and a plurality of motors 511 are fixedly connected to the other side of the side plate 2, and the output shafts of the plurality of motors 511 pass through the side plate 2 and are respectively fixedly connected to one end of the plurality of rotating shafts 512.

[0045] By adopting the above technical solution, the motor 511 drives the rotating shaft 512 to rotate, and the rotation of the rotating shaft 512 drives the sprocket 1 513 to rotate. The rotation of the sprocket 1 513 drives multiple sprockets 2 54 to rotate through the chain belt 1 514. The rotation of the sprocket 2 54 can drive the heat exchange inner tube 42 to rotate inside the two partitions 3. The rotation of the heat exchange inner tube 42 causes the cooling medium flowing through the spiral blades 422 to change the flow direction and enhance the turbulence, which can not only reduce the temperature difference on the surface of the pipeline and avoid excessive temperature gradient of the cooling medium, but also enhance the turbulence of the cooling medium and further improve the heat exchange process. The rotation can also avoid the "dead zone" of the cooling medium caused by uneven flow, thereby improving the overall cooling efficiency. At the same time, the rotation of the heat exchange inner tube 42 can effectively avoid the formation of deposits (such as scaling or impurities) on the inner wall of the heat exchange inner tube 42. Especially when the gas is converted into liquid during the condensation process, scale, grease or other substances are often deposited on the surface of the pipeline. Through rotation, the deposits on the inner wall of the heat exchange inner tube 42 will be continuously broken up or removed, thereby reducing the scaling problem and extending the service life of the condenser.

[0046] like Figure 5-Figure 7 As shown, the shell 1 is also connected to an in-tube descaling assembly 56, and the in-tube descaling assembly 56 includes a plurality of support rods 561 located inside a plurality of heat exchange inner tubes 42, a plurality of sleeve rods 562 movably sleeved on the outside of the plurality of support rods 561, and bristles 563 fixedly connected to the outside of the plurality of sleeve rods 562, and the two ends of the support rods 561 are respectively connected to the two side panels 2.

[0047] A transmission part 55 for driving the support rod 561 to rotate is connected to one side of one of the side panels 2, and the transmission part 55 includes a plurality of grooves 551 opened on one side of the side panel 2, a plurality of sprockets 555 rotatably connected to the inner walls of the plurality of grooves 551, a chain belt 2 556 connecting the plurality of sprockets 555 arranged vertically, a rotating seat 552 respectively fixed to one side of the plurality of sprockets 555, a plurality of gears 553 respectively fixed to the outside of a plurality of rotating shafts 512, and a plurality of gears 554 respectively sleeved on the outside of a plurality of rotating seats 552 adjacent to the rotating shafts 512 and meshing with the gear 1 553, and one end of the support rod 561 is fixed to one side of the rotating seat 552.

[0048] By adopting the above technical solution, the rotation of the rotating shaft 512 can also drive the gear 1 553 to rotate, and the rotation of the gear 1 553 can drive the rotating seat 552 adjacent to the gear 1 553 to rotate, and the rotation of the rotating seat 552 drives the sprocket 3 555 to rotate. When the sprocket 3 555 on the rotating seat 552 driven by the gear 1 553 rotates, the chain belt 2 556 can drive the remaining sprockets 3 555 and the rotating seat 552 to rotate, and the rotation of the rotating seat 552 drives the support rod 561 and the sleeve rod 562 to rotate, and the rotation of the sleeve rod 562 drives the bristles 5 63 rotates, and the rotation direction of the sleeve rod 562 is opposite to that of the heat exchange inner tube 42. The rotation of the sleeve rod 562 can continuously clean the dust, impurities or solid particles on the inner wall of the heat exchange inner tube 42 through the bristles 563. This dynamic cleaning method can prevent the pipeline from being blocked due to the accumulation of impurities, and avoid the impurities adhering to the inner wall of the heat exchange inner tube 42 affecting the heat exchange efficiency. At the same time, the rotating bristles 563 will disturb the gas flow in the heat exchange inner tube 42 while cleaning, breaking the static boundary layer between the gas and the tube wall, so that the heat exchange between the airflow and the tube wall is more uniform and efficient.

[0049] like Figure 8-Figure 12 As shown, a spring 564 is sleeved on the outside of one end of the support rod 561, and a ring body 565 is fixedly connected to the outer surface of one end of the sleeve rod 562, and the two ends of the spring 564 are respectively connected to the ring body 565 and one side of the rotating seat 552, and a plurality of flanges 567 are fixedly connected to the other end of the sleeve rod 562, and a plurality of flanges 567 are each provided with a slope 1 566 on one side, and a plurality of grooves 2 568 for accommodating the flanges 567 are provided on one side of one of the side panels 2, and a slope 2 569 matching the slope 1 566 is provided on the inner wall of the groove 2 568.

[0050] By adopting the above technical solution, when the support rod 561 and the sleeve rod 562 rotate, the flange 567 at one end of the sleeve rod 562 also rotates accordingly, and the inclined surface 1 566 on the flange 567 slides out along the inclined surface 2 569 on the inner wall of the groove 2 568, and the flange 567 can be moved out of the groove 2 568. When the flange 567 moves out of the groove 2 568, the flange 567 can push the sleeve rod 562 to slide outside the support rod 561, and the sleeve rod 562 moves toward the direction of the spring 564 and squeezes the spring 564. When the flange 567 enters the groove 2 568 again, the spring 564 can push the sleeve rod 562 to move toward the direction of the flange 567 and reset the sleeve rod 562, so that the sleeve rod 562 can also move laterally during the rotation process, thereby driving the bristles 563 to rotate and move laterally, thereby improving the cleaning effect of the bristles 563 on the attachments on the inner wall of the heat exchange inner tube 42.

[0051] Method of use: Hydrogen fluoride gas enters the shell 1 from the air inlet 11, and enters the conical inner cavity 421 inside the heat exchange inner tube 42 from one end of the heat exchange inner tube 42, and is discharged from the other end of the heat exchange inner tube 42 after passing through the conical inner cavity 421. The discharged gas is discharged from the air outlet 12, and the cooling medium (water or other cooling liquid) enters the closed chamber between the two partitions 3 from the liquid inlet 16. The pipeline interface 14 is connected to the liquid inlet pipeline and the liquid return pipeline. The pipeline interface 14 is connected to the inlet through the pipeline. The second liquid inlet 43 is connected to the third liquid discharge port 44 (the pipeline is not shown in the drawings of the specification of this application). The cooling medium in the liquid inlet pipeline enters the second liquid inlet 43 from the pipeline interface 14 through the pipeline, enters between the heat exchange outer tube 41 and the heat exchange inner tube 42 from the second liquid inlet 43, and is discharged from the third liquid discharge port 44 into the return liquid pipeline. The cooling medium not only flows between the heat exchange outer tube 41 and the heat exchange inner tube 42, but also flows outside the heat exchange outer tube 41. The cooling medium between the heat exchange outer tube 41 and the heat exchange inner tube 42 The cooling medium will first absorb heat, while the cooling medium outside the heat exchange outer tube 41 further absorbs heat. Even if the temperature of the cooling medium between the heat exchange outer tube 41 and the heat exchange inner tube 42 increases, the cooling medium outside the heat exchange outer tube 41 can continue to absorb heat, ensuring that the temperature of the cooling medium will not rise sharply to the extent that affects the cooling effect of the upper pipeline. The driving part 51 can drive the multiple sprockets 54 to rotate, and the rotation of the sprockets 54 can drive the heat exchange inner tube 42 to rotate inside the two partitions 3. The rotation of the heat exchange inner tube 42 causes the cooling medium flowing through the spiral blades 422 to change the flow direction and enhance turbulence. At the same time, the driving part 51 can drive the transmission part 55 to work, and the transmission part 55 can drive the support rod 561 and the sleeve rod 562 to rotate. The rotation of the sleeve rod 562 drives the bristles 563 to rotate, and the rotation direction of the sleeve rod 562 is opposite to the rotation direction of the heat exchange inner tube 42. The rotation of the sleeve rod 562 can continuously clean the dust, impurities or solid particles on the inner wall of the heat exchange inner tube 42 through the bristles 563.

[0052] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogen fluoride condenser for recycling waste electrolyte, comprising a shell (1) with a cavity formed therein and two side plates (2) fixedly connected to the inner walls of two openings of the cavity, characterized in that: Two partitions (3) are symmetrically fixedly connected to the inner wall of the shell (1), and a closed chamber is formed between the two partitions (3); the upper end and the lower end of the shell (1) are respectively provided with a liquid discharge port (13) and a liquid inlet (16) connected to the closed chamber; the upper end of the shell (1) is respectively provided with an air inlet (11) and an air outlet (12) connected to the cavity; and the lower end of the shell (1) is symmetrically provided with two liquid discharge ports (15) connected to the cavity; A plurality of heat exchange parts (4) are connected between the two partitions (3), and the heat exchange parts (4) include a heat exchange inner tube (42) whose two ends are rotatably connected to the inside of the two partitions (3), a heat exchange outer tube (41) which is sleeved on the outside of the heat exchange inner tube (42) and whose two ends are respectively fixed to one side of the two partitions (3), and a second liquid inlet (43) and a third liquid outlet (44) respectively provided at two ends of the outer surface of the heat exchange outer tube (41). The upper end of the shell (1) is provided with a plurality of pipe interfaces (14) for connecting to the plurality of second liquid inlets (43) and third liquid outlets (44) through pipes.

2. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 1, characterized in that: The heat exchange outer tube (41) comprises a throat (412), a liquid inlet end (411) and a diffuser liquid outlet end (413) respectively formed integrally at both ends of the throat (412); the second liquid inlet (43) is provided on the outer surface of the liquid inlet end (411); and the third liquid outlet (44) is provided on the outer surface of the diffuser liquid outlet end (413).

3. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 2, characterized in that: A spiral blade (422) is fixedly connected to the outer surface of the heat exchange inner tube (42).

4. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 3, characterized in that: A conical inner cavity (421) is provided inside the heat exchange inner tube (42).

5. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 4, characterized in that: A plurality of rotating seals (52) and (53) are fixedly connected inside the two partitions (3), and the rotating seals (52) and (53) are sleeved on the outside of the rotating inner tube and used for dynamically sealing the rotating inner tube.

6. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 5, characterized in that: The shell (1) is also internally connected to a flow promotion unit (5), and the flow promotion unit (5) comprises a driving unit (51) connected between one of the side plates (2) and an adjacent partition plate (3), and a sprocket wheel (54) fixed to one end of the plurality of rotating inner tubes and drivingly connected to the driving unit (51).

7. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 6, characterized in that: The driving part (51) comprises a plurality of rotating shafts (512) whose two ends are respectively rotatably connected to one side of one of the side plates (2) and one side of one of the partition plates (3), a plurality of sprocket wheels (513) respectively fixedly connected to the outer surfaces of the plurality of rotating shafts (512), and a chain belt (514) that transmission-connects the sprocket wheel (513) and the sprocket wheel (54), and a plurality of motors (511) are fixedly connected to the other side of the side plate (2), and the output shafts of the plurality of motors (511) penetrate the side plate (2) and are respectively fixedly connected to one end of the plurality of rotating shafts (512).

8. The hydrogen fluoride condenser for recycling waste electrolyte according to claim 7, characterized in that: The shell (1) is also connected to an in-tube descaling assembly (56), and the in-tube descaling assembly (56) comprises a plurality of support rods (561) located inside the plurality of heat exchange inner tubes (42), a plurality of sleeve rods (562) movably sleeved on the outside of the plurality of support rods (561), and bristles (563) fixedly connected to the outside of the plurality of sleeve rods (562), and the two ends of the support rods (561) are respectively connected to the two side plates (2).

9. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 8, characterized in that: A transmission part (55) for driving the support rod (561) to rotate is connected to one side of one of the side plates (2), and the transmission part (55) comprises a plurality of grooves (551) provided on one side of the side plate (2), a plurality of sprocket wheels (555) rotatably connected to the inner wall of the plurality of grooves (551), a chain belt (556) connecting the plurality of sprocket wheels (555) arranged vertically, a rotating seat (552) respectively fixed to one side of the plurality of sprocket wheels (555), a plurality of gear wheels (553) respectively fixed to the outside of the plurality of rotating shafts (512), and a plurality of gear wheels (554) respectively sleeved on the outside of the plurality of rotating seats (552) adjacent to the rotating shafts (512) and meshing with the gear wheels (553), and one end of the support rod (561) is fixed to one side of the rotating seat (552).

10. A hydrogen fluoride condenser for recycling waste electrolyte according to claim 9, characterized in that: A spring (564) is sleeved on the outside of one end of the support rod (561), and a ring body (565) is fixedly connected to the outer surface of one end of the sleeve rod (562), and the two ends of the spring (564) are respectively connected to the ring body (565) and one side of the rotating seat (552), and a plurality of flanges (567) are fixedly connected to the other end of the sleeve rod (562), and one side of the plurality of flanges (567) is provided with a first inclined surface (566), and one side of one of the side plates (2) is provided with a plurality of second grooves (568) for accommodating the flanges (567), and the inner wall of the second groove (568) is provided with a second inclined surface (569) matching the first inclined surface (566).

Images