Allopurinol desalting and evaporating device and desalting and evaporating method thereof

Abstract

The invention belongs to the technical field of desalination and evaporation, and discloses an allopurinol desalination and evaporation device which comprises a falling-film evaporator main body, and further comprises a heat exchange assembly fixedly mounted in the falling-film evaporator main body, and a heat exchange assembly fixedly mounted in the falling-film evaporator main body, and the cleaning assembly is arranged in the heat exchange assembly. The pull rod, the first connecting piece and the elastic membrane are connected, the outer end of the elastic membrane is limited by the first abutting piece and the second abutting piece, the outer diameter value of the elastic membrane is increased, the periphery of the elastic membrane makes contact with the inner wall of the heat exchange tube body, and at the moment, the elastic membrane cannot continue to move downwards; the supporting frame is driven to compress the reset elastic piece so that the supporting frame and the elastic membrane can move downwards along the first guide rod, salt attached to the inner wall of the first guide rod can be cleaned through downward movement of the elastic membrane, and therefore the thickness of the inner wall of the heat exchange pipe body is reduced, heat transfer is guaranteed, and then the allopurinol desalting efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of desalination and evaporation, and in particular relates to an allopurinol desalination and evaporation device and a desalination and evaporation method thereof. Background Art

[0002] Allopurinol is a xanthine oxidase inhibitor and a uric acid-lowering drug, mainly used to treat hyperuricemia and related diseases (such as gout). Its core mechanism of action is to inhibit the activity of xanthine oxidase, block the conversion of hypoxanthine and xanthine into uric acid, thereby reducing the level of uric acid in the blood and preventing inflammation and complications caused by uric acid crystal deposition. In the production process of allopurinol, membrane evaporators can be used for desalination and solvent recovery. Its core advantages lie in high efficiency, energy saving and continuous operation, and are especially suitable for the concentration and salt separation of heat-sensitive materials. Thin film evaporation technology allows the liquid to form an extremely thin liquid film on the heating surface, quickly evaporating water or solvent, while the salt remains because it is non-volatile. It is suitable for the concentration and desalination of allopurinol aqueous solutions or alcoholic solutions. During the desalination process of the allopurinol solvent through a falling film evaporator, the allopurinol solvent moves downward in the heat exchange tube of the cooling evaporator, and the solution forms water vapor under the action of heat, while the salt cannot volatilize and remains in the heat exchange tube of the falling film evaporator and moves downward for collection. However, as the falling film evaporator continues to desalinate the allopurinol solution, the salt will adhere to the inner wall of the heat exchange tube of the falling film evaporator, thereby affecting the thickness of the heat exchange tube, and further affecting the heat transfer, reducing the efficiency of allopurinol desalination. Therefore, an allopurinol desalination evaporation device and a desalination evaporation method thereof are proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides an allopurinol desalination evaporation device and a desalination evaporation method thereof, which solves the problem that when a falling film evaporator continuously desalinates an allopurinol solution, salt adheres to the inner wall of the heat exchange tube of the falling film evaporator, thereby affecting the thickness of the heat exchange tube and affecting heat transfer.

[0004] To achieve the above object, the present invention provides the following technical solution: an allopurinol desalting evaporation device, comprising a falling film evaporator body, and further comprising: A heat exchange component, wherein the heat exchange component is fixedly mounted inside the falling film evaporator body; A cleaning component, wherein the cleaning component is disposed inside the heat exchange component; A collecting assembly, the collecting assembly being arranged at the lower end of the falling film evaporator body; Wherein, the heat exchange assembly comprises a first guide rod; The cleaning assembly comprises a support frame sliding on the first guide rod through a stabilizing frame, a second guide rod is fixedly mounted on the top of the support frame, and a first contact piece and a second contact piece are respectively fixedly mounted on the upper and lower ends of the second guide rod; An elastic membrane is disposed between the first contact piece and the second contact piece, and a movable groove is formed on the outside of the elastic membrane, and the second guide rod passes through the movable groove. The top of the support frame is provided with a first supporting elastic member for supporting the elastic diaphragm upward; A first connecting member is fixedly mounted at the bottom of the elastic membrane, a pulling rod is connected to the bottom of the first connecting member, and the bottom of the pulling rod is connected to the collecting assembly; The elastic diaphragm is in a truncated cone shape, and notches are equidistantly provided on the periphery of the elastic diaphragm, so that the elastic diaphragm is in a petal shape.

[0005] Preferably, the heat exchange assembly further comprises a heat exchange tube body fixedly mounted inside the falling film evaporator body, and the heat exchange tube body is fixedly connected to the first guide rod via a connecting frame.

[0006] Preferably, docking pieces are fixedly mounted at equal intervals on the outside of the first guide rod, a stabilizing frame is fixedly mounted on the top of the support frame, and a reset elastic piece is arranged on the top of the docking piece to support the cleaning assembly upward.

[0007] Preferably, the support frame is movably engaged with the outside of the first guide rod through a stabilizing frame, and the top of the resetting elastic member is fixedly connected to the stabilizing frame; The cleaning components are provided in three groups, and each group of the cleaning components is equidistantly arranged outside the first guide rod through a reset elastic member, and the pulling rod is fixedly connected to the three elastic diaphragms.

[0008] Preferably, a guide groove is formed on the inner wall of the first guide rod, and the guide groove is in an inverted "J" shape; The elastic diaphragm slides inside the guide groove via the docking convex rod; In the initial state, the elastic membrane, under the action of the resetting elastic member, causes the butt joint protrusion to be located at the inclined groove at the top end of the guide groove.

[0009] Preferably, the cleaning assembly further comprises a second connecting piece fixedly mounted on the top of the supporting frame, a threaded rod is movably sleeved on the middle part of the elastic diaphragm, and the lower end of the threaded rod is threadedly sleeved on the second connecting piece; The outside of the threaded rod is fixedly provided with a resisting piece which contacts the top of the elastic diaphragm.

[0010] Preferably, the collecting assembly comprises a collecting box movably sleeved on the lower end of the falling film evaporator body, and a first magnet is fixedly installed inside the falling film evaporator body; In an initial state, the top of the collection box is in contact with the first magnet; A second supporting elastic member for supporting the collecting box upward is arranged at the bottom of the falling film evaporator body, and a second magnet is fixedly installed at the bottom of the falling film evaporator body; The pulling rod is fixedly connected to the inner wall of the collecting box.

[0011] Preferably, a connecting pipe is fixedly mounted at the bottom of the falling film evaporator body, and a drainage hole is opened on the outside of the connecting pipe; The connecting pipe is movably sleeved inside the collecting box; When the collecting box moves downward and contacts the second magnet, the drainage hole is located inside the collecting box.

[0012] The present invention also provides an allopurinol desalting and evaporating method, comprising the following steps: S1, injecting the allopurinol solution into the falling film evaporator body, injecting hot air into the falling film evaporator body to contact the surface of the heat exchange component to achieve the purpose of heat exchange, and the allopurinol solution moving down along the inner wall of the heat exchange component is heated to form gas and discharged and collected, while the salt falls into the collection component as the heat exchange component moves down and is collected and discharged; S2, as the amount of collected matter in the collection assembly increases, the weight continues to increase, and after reaching the set value, the pull rod is driven to move downward synchronously, because the pull rod is connected to the elastic diaphragm through the first connecting member; S3, the middle part of the elastic diaphragm is pulled by the first connecting member to squeeze the first supporting elastic member, so that the middle part of the elastic diaphragm moves downward, and the outer end of the elastic diaphragm is limited by the first contact piece and the second contact piece, so that the outer diameter of the elastic diaphragm is increased, so that the periphery of the elastic diaphragm contacts the inner wall of the heat exchange tube body in the heat exchange assembly; S4. At this time, the elastic diaphragm cannot move downward any further, thereby driving the support frame to move the elastic diaphragm downward along the first guide rod, and the salt attached to the inner wall of the first guide rod is cleaned by the downward movement of the elastic diaphragm.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention is connected with the elastic diaphragm by a pulling rod, a first connecting member, and the middle part of the elastic diaphragm is pulled by the first connecting member to squeeze the first supporting elastic member, so that the middle part of the elastic diaphragm moves downward, and the outer end of the elastic diaphragm is limited by the first contact piece and the second contact piece, so that the outer diameter value of the elastic diaphragm is increased, so that the outer periphery of the elastic diaphragm contacts the inner wall of the heat exchange tube body, and the elastic diaphragm cannot continue to move downward, thereby driving the support frame to compress the reset elastic member so that the support frame and the elastic diaphragm move downward along the first guide rod, and the salt attached to the inner wall of the first guide rod is cleaned by the downward movement of the elastic diaphragm, thereby reducing the thickness of the inner wall of the heat exchange tube body, ensuring the heat transfer, and further improving the efficiency of allopurinol desalination; The present invention rotates the threaded rod and the second connecting piece under the action of threaded engagement, the threaded rod presses the elastic diaphragm downward through the abutment piece, thereby increasing the outer diameter value of the elastic diaphragm, and the docking convex rod slides along the inclined groove at the top of the guide groove, thereby shortening the distance between the outer periphery of the elastic diaphragm and the inner wall of the heat exchange tube body. In the process of the allopurinol solution entering the falling film evaporator body and moving downward along the inner wall of the heat exchange tube body, the allopurinol solution is limited by the elastic diaphragm, the thickness of the falling film on the inner wall of the heat exchange tube body is reduced, and the desalination effect of the allopurinol solution is achieved. The distance between the elastic diaphragm and the heat exchange tube body can be adjusted by the threaded rod to achieve the control of the thickness of the falling film. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the heat exchange component and the cleaning component of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the heat exchange component and the cleaning component of the present invention; Figure 5 This is a schematic diagram of the coordination structure of multiple cleaning components of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the cleaning component of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the cleaning component of the present invention; Figure 8 It is a schematic diagram of the matching structure between the elastic diaphragm and the first guide rod of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the collecting component of the present invention.

[0015] In the figure: 1. falling film evaporator body; 2. heat exchange component; 21. heat exchange tube body; 22. first guide rod; 23. guide groove; 24. stabilizing frame; 25. reset elastic member; 26. docking member; 27. connecting frame; 3. cleaning component; 31. elastic diaphragm; 32. second guide rod; 33. first resistance piece; 34. second resistance piece; 35. first connecting member; 36. pulling rod; 37. supporting frame; 38. movable groove; 39. docking convex rod; 311. second connecting member; 312. first supporting elastic member; 313. threaded rod; 4. collecting component; 41. first magnet; 42. collecting box; 43. second supporting elastic member; 44. second magnet; 45. drainage hole; 46. connecting pipe. DETAILED DESCRIPTION

[0016] 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.

[0017] like Figures 1 to 9 As shown, the present invention provides an allopurinol desalination evaporation device, comprising a falling film evaporator body 1, and further comprising: The heat exchange component 2 is fixed inside the falling film evaporator body 1; A cleaning component 3, the cleaning component 3 is arranged inside the heat exchange component 2; A collecting assembly 4, which is arranged at the lower end of the falling film evaporator body 1; Wherein, the heat exchange assembly 2 includes a first guide rod 22; The cleaning assembly 3 includes a support frame 37 that slides on the first guide rod 22 through the stabilizing frame 24, a second guide rod 32 is fixedly mounted on the top of the support frame 37, and a first abutment sheet 33 and a second abutment sheet 34 are fixedly mounted on the upper and lower ends of the second guide rod 32 respectively; An elastic membrane 31 is disposed between the first contact piece 33 and the second contact piece 34. A movable groove 38 is formed on the outside of the elastic membrane 31. The second guide rod 32 passes through the movable groove 38. A first supporting elastic member 312 is disposed on the top of the supporting frame 37 to support the elastic membrane 31 upwards; A first connecting member 35 is fixedly mounted at the bottom of the elastic membrane 31, a pulling rod 36 is connected to the bottom of the first connecting member 35, and the bottom of the pulling rod 36 is connected to the collecting assembly 4; The elastic diaphragm 31 is in a truncated cone shape, and slots are equidistantly formed on the periphery of the elastic diaphragm 31 , so that the elastic diaphragm 31 is in a petal shape.

[0018] The heat exchange assembly 2 further includes a heat exchange tube body 21 fixedly mounted inside the falling film evaporator body 1, and the heat exchange tube body 21 is fixedly connected to the first guide rod 22 via a connecting frame 27; The first guide rod 22 is equidistantly fixed with docking pieces 26 on its outside, the top of the support frame 37 is fixed with a stabilizing frame 24, and the top of the docking piece 26 is provided with a resetting elastic piece 25 for supporting the cleaning assembly 3 upwards; The support frame 37 is movably engaged with the outside of the first guide rod 22 through the stabilizing frame 24, and the top of the resetting elastic member 25 is fixedly connected to the stabilizing frame 24; Three groups of cleaning components 3 are provided. Each group of cleaning components 3 is equidistantly arranged outside the first guide rod 22 through the resetting elastic member 25 , and the pulling rod 36 is fixedly connected to the three elastic diaphragms 31 .

[0019] The allopurinol solution is injected into the falling film evaporator body 1, and hot air is injected into the falling film evaporator body 1 to contact the surface of the heat exchange component 2 to achieve the purpose of heat exchange. The allopurinol solution moving down along the inner wall of the heat exchange component 2 is heated to form gas and discharged and collected, while the salt falls into the collecting component 4 as the heat exchange component 2 moves down and is collected and discharged. As the amount of salt collected in the collecting component 4 gradually increases, the weight continues to increase. After reaching the set value, the pull rod 36 is driven to move downward synchronously. Since the pull rod 36 is connected to the elastic diaphragm 31 through the first connecting member 35, the middle part of the elastic diaphragm 31 is pulled by the first connecting member 35 to squeeze the first supporting elastic member 31. 2, the middle part of the elastic diaphragm 31 moves downward, and the outer end of the elastic diaphragm 31 is limited by the first abutment piece 33 and the second abutment piece 34, increasing the outer diameter of the elastic diaphragm 31, so that the outer periphery of the elastic diaphragm 31 contacts the inner wall of the heat exchange tube body 21. At this time, the elastic diaphragm 31 cannot move downward further, thereby driving the support frame 37 to compress the reset elastic member 25 so that the support frame 37 and the elastic diaphragm 31 move downward along the first guide rod 22. The salt attached to the inner wall of the first guide rod 22 is cleaned by the downward movement of the elastic diaphragm 31, thereby reducing the thickness of the inner wall of the heat exchange tube body 21, ensuring the heat transfer, and thus improving the desalination efficiency of allopurinol; By moving the three cleaning components 3 downward synchronously, the inner wall of the heat exchange tube body 21 can be cleaned more completely, while reducing the downward moving distance of the cleaning components 3 and improving the cleaning stability.

[0020] like Figure 7 and Figure 8 As shown, the inner wall of the first guide rod 22 is provided with a guide groove 23, and the guide groove 23 is in an inverted "J" shape; The elastic diaphragm 31 slides inside the guide groove 23 through the docking protrusion 39; In the initial state, the elastic membrane 31 causes the docking protrusion 39 to be located at the top inclined groove of the guide groove 23 under the action of the reset elastic member 25 .

[0021] In the initial state, the docking protrusion 39 is located at the inclined groove at the top end of the guide groove 23. The middle part of the elastic diaphragm 31 is pulled downward by pulling the rod 36 and the first connecting member 35 to shorten the distance between the top and the bottom of the elastic diaphragm 31 and expand the outer diameter of the outer periphery of the elastic diaphragm 31. The docking protrusion 39 slides along the inclined groove at the top end of the guide groove 23 to the vertical groove. At this time, the salt attached to the inner wall of the heat exchange tube body 21 is cleaned by pulling the elastic diaphragm 31 and the support frame 37 to slide downward. The elastic diaphragm 31 slides downward along the guide groove 23 through the docking protrusion 39, thereby improving the stability of the elastic diaphragm 31 and ensuring the cleaning effect of the heat exchange tube body 21.

[0022] like Figure 3-Figure 7As shown, the cleaning assembly 3 also includes a second connecting member 311 fixedly mounted on the top of the support frame 37, a threaded rod 313 is movably sleeved on the middle part of the elastic diaphragm 31, and the lower end of the threaded rod 313 is threadedly sleeved on the second connecting member 311; The threaded rod 313 has an abutment member fixedly mounted on its exterior to contact the top of the elastic diaphragm 31 .

[0023] By rotating the threaded rod 313 and engaging the second connecting member 311 with the thread, the threaded rod 313 presses the elastic diaphragm 31 downward through the abutment member, thereby increasing the outer diameter of the elastic diaphragm 31, and the docking protrusion 39 slides along the inclined groove at the top of the guide groove 23, thereby shortening the distance between the outer periphery of the elastic diaphragm 31 and the inner wall of the heat exchange tube body 21. When the allopurinol solution enters the falling film evaporator body 1 and moves downward along the inner wall of the heat exchange tube body 21, the allopurinol solution is limited by the elastic diaphragm 31, and the thickness of the falling film on the inner wall of the heat exchange tube body 21 is reduced, so as to achieve the desalination effect of the allopurinol solution. The distance between the elastic diaphragm 31 and the heat exchange tube body 21 can be adjusted by the threaded rod 313 to control the thickness of the falling film.

[0024] like Figure 8 As shown, the collecting assembly 4 comprises a collecting box 42 movably sleeved on the lower end of the falling film evaporator body 1, and a first magnet 41 is fixedly installed inside the falling film evaporator body 1; In the initial state, the top of the collection box 42 is in contact with the first magnet 41; A second supporting elastic member 43 for supporting the collecting box 42 upward is provided at the bottom of the falling film evaporator body 1, and a second magnet 44 is fixedly installed at the bottom of the falling film evaporator body 1; The pull rod 36 is fixedly connected to the inner wall of the collection box 42; A connecting pipe 46 is fixedly mounted at the bottom of the falling film evaporator body 1, and a drainage hole 45 is opened outside the connecting pipe 46; The connecting pipe 46 is movably sleeved inside the collecting box 42; When the collecting box 42 moves downward and contacts the second magnet 44 , the drainage hole 45 is located inside the collecting box 42 .

[0025] By injecting allopurinol solution into the interior of the falling film evaporator body 1, the solution is heated to form steam which is discharged and collected, while the salt and the solution that cannot be vaporized fall into the interior of the collecting box 42. As the solution in the collecting box 42 continues to increase, the collecting box 42 is separated from the contact with the first magnet 41 and compresses the second supporting elastic member 43. Under the action of the suction force of the second magnet 44, the collecting box 42 contacts the second magnet 44, and the drainage hole 45 is located inside the collecting box 42. At this time, the salt and the allopurinol that cannot be vaporized in the collecting box 42 are discharged through the drainage hole 45. As the collecting box 42 continues to be discharged, the collecting box 42 is pushed to reset under the action of the second supporting elastic member 43.

[0026] The present invention also provides an allopurinol desalting and evaporating method, comprising the following steps: S1, injecting the allopurinol solution into the falling film evaporator body 1, injecting hot air into the falling film evaporator body 1 to contact the surface of the heat exchange component 2 to achieve the purpose of heat exchange, and the allopurinol solution moving down along the inner wall of the heat exchange component 2 is heated to form gas and discharged and collected, while the salt moves down with the heat exchange component 2 and falls into the collecting component 4 for collection and discharge; S2, as the weight of the collection component 4 increases gradually, after reaching the set value, the pull rod 36 is driven to move downward synchronously, because the pull rod 36 is connected to the elastic diaphragm 31 through the first connecting member 35; S3, the middle part of the elastic diaphragm 31 is pulled by the first connecting member 35 to squeeze the first supporting elastic member 312, so that the middle part of the elastic diaphragm 31 moves downward, and the outer end of the elastic diaphragm 31 is limited by the first contact piece 33 and the second contact piece 34, so that the outer diameter of the elastic diaphragm 31 is increased, so that the periphery of the elastic diaphragm 31 contacts the inner wall of the heat exchange tube body 21 in the heat exchange assembly 2; S4. At this time, the elastic diaphragm 31 cannot move downward any further, thereby driving the support frame 37 to move the elastic diaphragm 31 downward along the first guide rod 22. The elastic diaphragm 31 moves downward to clean the salt attached to the inner wall of the first guide rod 22.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An allopurinol desalination evaporation device, comprising a falling film evaporator body (1), characterized in that: Also includes: A heat exchange component (2), the heat exchange component (2) being fixedly mounted inside the falling film evaporator body (1); A cleaning component (3), the cleaning component (3) being arranged inside the heat exchange component (2); A collecting component (4), the collecting component (4) being arranged at the lower end inside the falling film evaporator body (1); Wherein, the heat exchange assembly (2) comprises a first guide rod (22); The cleaning assembly (3) comprises a support frame (37) which slides on the first guide rod (22) via a stabilizing frame (24); a second guide rod (32) is fixedly mounted on the top of the support frame (37); and a first abutment sheet (33) and a second abutment sheet (34) are respectively fixedly mounted on the upper and lower ends of the second guide rod (32); An elastic membrane (31) is provided between the first contact piece (33) and the second contact piece (34), a movable groove (38) is provided on the outside of the elastic membrane (31), and the second guide rod (32) passes through the movable groove (38). A first supporting elastic member (312) for supporting the elastic diaphragm (31) upwards is provided on the top of the supporting frame (37); A first connecting member (35) is fixedly mounted on the bottom of the elastic diaphragm (31), a pulling rod (36) is connected to the bottom of the first connecting member (35), and the bottom of the pulling rod (36) is connected to the collecting assembly (4); The elastic diaphragm (31) is in the shape of a truncated cone, and notches are provided at equal intervals on the periphery of the elastic diaphragm (31), so that the elastic diaphragm (31) is in the shape of a petal.

2. The allopurinol desalination evaporation device according to claim 1, characterized in that: The heat exchange assembly (2) further comprises a heat exchange tube body (21) fixedly mounted inside the falling film evaporator body (1); the heat exchange tube body (21) is fixedly connected to the first guide rod (22) via a connecting frame (27).

3. The allopurinol desalination evaporation device according to claim 2, characterized in that: The first guide rod (22) is equidistantly fixed with docking pieces (26) on its exterior, the support frame (37) is fixed with a stabilizing frame (24) on its top, and a resetting elastic piece (25) is provided on the top of the docking piece (26) for supporting the cleaning assembly (3) upward.

4. The allopurinol desalination evaporation device according to claim 3, characterized in that: The support frame (37) is movably engaged with the outside of the first guide rod (22) via the stabilizing frame (24), and the top of the resetting elastic member (25) is fixedly connected to the stabilizing frame (24); The cleaning components (3) are provided in three groups, and each group of the cleaning components (3) is arranged equidistantly outside the first guide rod (22) through a reset elastic member (25), and the pulling rod (36) is fixedly connected to the three elastic membranes (31).

5. The allopurinol desalination evaporation device according to claim 1, characterized in that: A guide groove (23) is formed on the inner wall of the first guide rod (22), and the guide groove (23) is in the shape of an inverted "J"; The elastic diaphragm (31) slides inside the guide groove (23) via a docking protrusion (39); In the initial state, the elastic membrane (31) is positioned at the top inclined groove of the guide groove (23) under the action of the resetting elastic member (25).

6. The allopurinol desalination evaporation device according to claim 5, characterized in that: The cleaning assembly (3) further comprises a second connecting member (311) fixedly mounted on the top of the support frame (37); a threaded rod (313) is movably sleeved on the middle portion of the elastic diaphragm (31); and the lower end of the threaded rod (313) is threadedly sleeved on the second connecting member (311); The threaded rod (313) is externally fixed with a resisting piece that contacts the top of the elastic diaphragm (31).

7. The allopurinol desalination evaporation device according to claim 1, characterized in that: The collecting assembly (4) comprises a collecting box (42) movably sleeved on the lower end of the falling film evaporator body (1), and a first magnet (41) is fixedly mounted inside the falling film evaporator body (1); In an initial state, the top of the collection box (42) is in contact with the first magnet (41); A second supporting elastic member (43) for supporting the collecting box (42) upward is provided at the bottom of the falling film evaporator body (1), and a second magnet (44) is fixedly mounted at the bottom of the falling film evaporator body (1); The pulling rod (36) is fixedly connected to the inner wall of the collecting box (42).

8. The allopurinol desalination evaporation device according to claim 7, characterized in that: A connecting pipe (46) is fixedly mounted at the bottom of the falling film evaporator body (1), and a drainage hole (45) is provided on the outside of the connecting pipe (46); The connecting pipe (46) is movably sleeved inside the collecting box (42); When the collecting box (42) moves downward and contacts the second magnet (44), the drainage hole (45) is located inside the collecting box (42).

9. A method for desalting and evaporating allopurinol, using the allopurinol desalting and evaporating device as claimed in claim 1, characterized in that: The following steps are involved: S1, injecting the allopurinol solution into the interior of the falling film evaporator body (1), injecting hot gas into the falling film evaporator body (1) to contact the surface of the heat exchange component (2) to achieve the purpose of heat exchange, and the allopurinol solution moving down along the inner wall of the heat exchange component (2) is heated to form gas and discharged and collected, while the salt moves down along the heat exchange component (2) and falls into the collection component (4) to be collected and discharged; S2, as the amount of collected matter in the collecting assembly (4) gradually increases, the weight continues to increase, and after reaching a set value, the pulling rod (36) is driven to move downward synchronously, because the pulling rod (36) is connected to the elastic diaphragm (31) through the first connecting member (35); S3, pulling the middle part of the elastic diaphragm (31) through the first connecting member (35) to squeeze the first supporting elastic member (312), so that the middle part of the elastic diaphragm (31) moves downward, and the outer end of the elastic diaphragm (31) is limited by the first contact piece (33) and the second contact piece (34), thereby increasing the outer diameter of the elastic diaphragm (31), so that the outer periphery of the elastic diaphragm (31) contacts the inner wall of the heat exchange tube body (21) in the heat exchange assembly (2); S4. At this time, the elastic diaphragm (31) cannot move further downward, thereby driving the support frame (37) to move the elastic diaphragm (31) downward along the first guide rod (22). The elastic diaphragm (31) moves downward to clean the salt attached to the inner wall of the first guide rod (22).

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