Scraper type thin film evaporator with good heat transfer effect

Abstract

The utility model is suitable for evaporator equipment technical field provides a kind of good heat transfer effect scraper blade type thin film evaporator, including evaporator main part, evaporator main part includes evaporating cylinder, heating cylinder and separating cylinder;Scraper blade assembly, scraper blade assembly includes rotating column and scraper blade, scraper blade is detachably installed in rotating column, rotating column is rotatably installed in evaporating cylinder interior, rotating column has limit board and limit column;Liquid separation component, liquid separation component includes liquid separation cylinder, liquid separation cylinder is set as circular table, liquid separation cylinder has liquid separation hole, liquid separation cylinder has limit hole;In the utility model, rotating column rotates, liquid separation cylinder rotates, material is dispersed more evenly by liquid separation hole, and flows to evaporating cylinder side wall via liquid separation hole;Scraper blade scrapes material into thin film, so that material entering evaporating cylinder interior evenly covers, avoids that evaporating cylinder inner wall partial area is not covered or is insufficiently covered by material, improves the overall heat transfer efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of evaporator equipment, and in particular relates to a scraped thin film evaporator with good heat transfer effect. Background Technology

[0002] A scraped-film evaporator is a high-efficiency evaporation device that uses a rotating scraper to force materials to form a film and exchange heat. It is mainly used for separation and concentration operations in industries such as chemical, pharmaceutical and food. Its main principle is based on the difference in boiling points of the components of the mixture. The material is added from above the heating zone and evenly distributed to the inner wall of the evaporator by the liquid distributor. The rotating scraper scrapes the liquid into a thin film, which is then quickly passed through the heating surface and achieves efficient separation through heat exchange under real conditions.

[0003] A search revealed a Chinese patent (publication number: CN210728694U) that discloses a scraped-film evaporator, comprising an evaporator body and a motor. The evaporator body has a double-layer cylindrical structure, and from the outside to the inside, it includes an insulation chamber and an evaporation chamber. The insulation chamber contains an annular coiled insulation coil, and the sides of the insulation chamber have an insulation heat source inlet and an insulation heat source outlet connected to the insulation coil. The top of the evaporation chamber has a separation chamber with a secondary steam outlet. The upper side of the evaporation chamber has a feed inlet, the middle side of the evaporation chamber has an evaporation heat source inlet and an evaporation heat source outlet, and the bottom of the evaporation chamber has a concentrate outlet. The motor has a rotating shaft with multiple movable scrapers spaced apart on it. This device solves the problem of poor heat transfer in traditional evaporators by increasing the number of scrapers and using an asymmetrical scraper design to enhance the disturbance effect of the scrapers on the liquid film surface, thereby improving the evaporation effect.

[0004] However, because the material enters the evaporator cylinder from the top and through the distributor, it cannot be evenly distributed inside the evaporator cylinder. As a result, some areas of the evaporator cylinder will have "dry walls" or "thin zones" where there is no material covering or insufficient covering. This leads to a significant reduction in the actual area participating in heat exchange and a decrease in overall heat transfer efficiency. Therefore, a scraped thin-film evaporator with good heat transfer performance is needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a scraped thin film evaporator with good heat transfer effect to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A scraped-film evaporator with good heat transfer performance includes:

[0008] The evaporator body includes an evaporation cylinder, a heating cylinder, and a separation cylinder. The heating cylinder is installed outside the evaporation cylinder, and the separation cylinder is detachably installed at the upper end of the evaporation cylinder. The upper end of the evaporation cylinder has a feed inlet.

[0009] A scraper assembly includes a rotating column and multiple scrapers. The scrapers are detachably mounted on the rotating column. The end face of the scraper away from the rotating column is spaced a predetermined distance from the evaporation cylinder. The rotating column is rotatably mounted inside the evaporation cylinder. The rotating column has a limiting plate and multiple limiting posts. The limiting posts are fixedly mounted on the upper surface of the limiting plate. The multiple limiting posts are circumferentially distributed around the axis of the rotating column. The limiting plate is positioned at a predetermined distance above the feed inlet.

[0010] The liquid separating assembly includes a liquid separating cylinder, which is configured as a frustum. The circumferential sidewall of the liquid separating cylinder has multiple spaced-apart liquid separating holes. The upper end face of the liquid separating cylinder has multiple circumferentially distributed limiting holes. The inner wall of the upper end of the liquid separating cylinder is attached to the limiting plate. The limiting post is inserted into the limiting hole. The sidewall of the liquid separating cylinder is attached to the inner wall of the evaporation cylinder.

[0011] In a further technical solution, the liquid separation assembly also includes multiple rotating columns, which are rotatably mounted on the lower end of the liquid separation cylinder. The multiple rotating columns are spaced apart and are in contact with the inner wall of the liquid separation cylinder.

[0012] In a further technical solution, the scraper assembly also includes multiple sets of support columns, each set of support columns having multiple columns, one end of each set of support columns being fixedly connected, each set of support columns being spaced apart, the rotating column being inserted into one end of the multiple support columns that are connected to each other, and the support column having an insertion groove at the end away from the rotating column, and the scraper being inserted into the insertion groove.

[0013] In a further technical solution, the support column located at the bottom end of the rotating column has a first fixing column in the insertion groove, and the lower end of the scraper has a first fixing hole, with the first fixing column inserted into the first fixing hole.

[0014] In a further technical solution, the liquid separation assembly also includes a liquid separation plate and a plurality of fixing studs. The liquid separation plate has a plurality of circumferentially distributed mounting holes. The support column located at the top of the rotating column has a threaded hole. The fixing studs are inserted into the mounting holes and threadedly connected to the threaded holes. The liquid separation plate is located below the liquid separation cylinder.

[0015] In a further technical solution, the upper end of the scraper has a second fixing hole, and the lower end face of the liquid separator has a plurality of second fixing posts distributed in a circular pattern, the second fixing posts being inserted into the second fixing hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention features a liquid distribution assembly, including a distributing cylinder shaped like a frustum, with distributing orifices and limiting holes. Material enters the evaporator through the inlet. The rotating column rotates, causing the distributing cylinder to rotate axially around the column. The material is more evenly dispersed by the distributing orifices and flows to the side wall of the evaporator. Subsequently, the rotating column drives a scraper to scrape the material into a thin film, ensuring even coverage of the material inside the evaporator and preventing insufficient or no material coverage on certain areas of the inner wall, thus improving overall heat transfer efficiency.

[0018] This invention features a separating plate and multiple fixing studs. The separating plate has multiple circumferentially distributed mounting holes, and a support column at the top of the rotating column has threaded holes. The fixing studs are inserted into the mounting holes and threadedly connected to the threaded holes. The separating plate is positioned below the separating cylinder. After the equipment has been used for a period of time, the worker first removes the separating cylinder from the upper end of the evaporating cylinder. Then, the separating cylinder is removed from the limiting plate to disengage the limiting column from the limiting hole. Next, the fixing studs are rotated to disengage them from the threaded holes and mounting holes, and then the separating plate is removed from the rotating column. At this point, the second fixing column disengages from the second fixing hole. Finally, the worker removes the scraper from the insertion slot. This detachable structure reduces maintenance costs.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a partial exploded view of the liquid separation component of this utility model;

[0023] Figure 4 This is a partial exploded view of the scraper assembly of this utility model from one angle;

[0024] Figure 5 This is a partial exploded view of the scraper assembly of this utility model from another angle.

[0025] In the diagram: 1. Evaporator body; 11. Evaporation cylinder; 111. Feed inlet; 12. Heating cylinder; 13. Separation cylinder; 2. Scraper assembly; 21. Rotating column; 211. Limiting plate; 212. Limiting column; 22. Scraper; 221. First fixing hole; 222. Second fixing hole; 23. Support column; 231. Insertion groove; 232. First fixing column; 233. Threaded hole; 3. Liquid distribution assembly; 31. Liquid distribution cylinder; 311. Liquid distribution hole; 312. Limiting hole; 32. Rotating column; 33. Liquid distribution plate; 331. Mounting hole; 332. Second fixing column; 34. Fixing stud. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] like Figures 1 to 5 As shown, this utility model embodiment provides a scraped thin-film evaporator with good heat transfer effect, comprising:

[0029] Evaporator body 1 includes evaporation cylinder 11, heating cylinder 12 and separation cylinder 13. Heating cylinder 12 is installed outside evaporation cylinder 11, and separation cylinder 13 is detachably installed on the upper end of evaporation cylinder 11. The upper end of evaporation cylinder 11 has a feed inlet 111.

[0030] Scraper assembly 2 includes a rotating column 21 and multiple scrapers 22. The scrapers 22 are detachably mounted on the rotating column 21. The end face of the scraper 22 away from the rotating column 21 is separated from the evaporator cylinder 11 by a predetermined distance. The rotating column 21 is rotatably mounted inside the evaporator cylinder 11. The rotating column 21 has a limiting plate 211 and multiple limiting posts 212. The limiting posts 212 are fixedly mounted on the upper end face of the limiting plate 211. The multiple limiting posts 212 are circumferentially distributed around the axis of the rotating column 21. The limiting plate 211 is positioned at a predetermined distance above the feed inlet 111.

[0031] Liquid separating assembly 3 includes a liquid separating cylinder 31, which is configured as a frustum. The circumferential sidewall of the liquid separating cylinder 31 has multiple spaced liquid separating holes 311, and the upper end face of the liquid separating cylinder 31 has multiple circumferentially distributed limiting holes 312. The inner wall of the upper end of the liquid separating cylinder 31 is attached to the limiting plate 211, and the limiting post 212 is inserted into the limiting hole 312. The sidewall of the liquid separating cylinder 31 is attached to the inner wall of the evaporation cylinder 11.

[0032] In this embodiment, the material enters the evaporator cylinder 11 through the feed inlet 111. At the same time, the rotating column 21 is driven by the drive device to rotate along its own axis, which in turn drives the liquid separator 31 to rotate around the rotating column 21. As the liquid separator 31 rotates, the material is more evenly dispersed by the liquid separator 311. Then, the evenly dispersed material flows to the side wall of the evaporator cylinder 11 through the liquid separator 311. Subsequently, the rotating column 21 drives multiple scrapers 22 to scrape the material into a thin film. By setting the liquid separator 31, the material entering the evaporator cylinder 11 is evenly covered, avoiding areas of the inner wall of the evaporator cylinder 11 that are not covered or are not covered enough, ensuring that the actual area participating in heat exchange is increased and improving the overall heat transfer efficiency.

[0033] Specifically, the liquid separation assembly 3 also includes a plurality of rotating columns 32, which are rotatably mounted on the lower end of the liquid separation cylinder 31. The plurality of rotating columns 32 are spaced apart and are in contact with the inner wall of the liquid separation cylinder 31.

[0034] In this embodiment, during the process of the rotating column 21 driving the separation cylinder 13 to rotate, multiple rotating columns 32 also rotate synchronously against the inner wall of the evaporation cylinder 11. By setting multiple rotating columns 32, the friction between the separation cylinder 13 and the evaporation cylinder 11 is reduced, and the service life of the equipment is extended.

[0035] Specifically, the scraper assembly 2 also includes multiple sets of support columns 23, each set of support columns 23 is provided with multiple support columns 23, one end of the multiple support columns 23 is fixedly connected, each set of support columns 23 is spaced apart, the rotating column 21 is inserted into one end of the multiple support columns 23 connected to each other, the support column 23 has an insertion groove 231 at the end away from the rotating column 21, and the scraper 22 is inserted into the insertion groove 231.

[0036] Specifically, the support column 23 located at the bottom end of the rotating column 21 has a first fixing column 232 in the insertion groove 231, and the scraper 22 has a first fixing hole 221 at the lower end, and the first fixing column 232 is inserted into the first fixing hole 221.

[0037] Specifically, the liquid separation assembly 3 also includes a liquid separation plate 33 and a plurality of fixing studs 34. The liquid separation plate 33 has a plurality of circumferentially distributed mounting holes 331. The support column 23 located at the top of the rotating column 21 has a threaded hole 233. The fixing studs 34 are inserted into the mounting holes 331 and threadedly connected to the threaded holes 233. The liquid separation plate 33 is located below the liquid separation cylinder 31.

[0038] In this embodiment, after the equipment has been used for a period of time, the worker first removes the separation cylinder 13 from the upper end of the evaporation cylinder 11; then removes the liquid separator 31 from the limiting plate 211 so that the limiting post 212 is disengaged from the limiting hole 312; then, rotates the fixing stud 34 so that the fixing stud 34 is disengaged from the threaded hole 233 and the mounting hole 331, and then removes the liquid separator 33 from the rotating post 21; at this time, the second fixing post 332 is disengaged from the second fixing hole 222; finally, the worker removes the scraper 22 from the insertion slot 231. The detachable structure can reduce the operation and maintenance costs.

[0039] Specifically, the upper end of the scraper 22 has a second fixing hole 222, and the lower end face of the liquid separating plate 33 has a plurality of second fixing posts 332 distributed in a circular pattern, the second fixing posts 332 being inserted into the second fixing hole 222.

[0040] The working principle of this utility model is as follows:

[0041] Material enters the evaporator cylinder 11 through the feed inlet 111. Simultaneously, the rotating column 21 is driven by the drive device to rotate along its own axis, which in turn drives the liquid separator 31 to rotate around the rotating column 21. As the liquid separator 31 rotates, the material is more evenly dispersed by the liquid separator holes 311. The evenly dispersed material then flows through the liquid separator holes 311 to the liquid separator plate 33, where it is further evenly dispersed and finally flows to the side wall of the evaporator cylinder 11. Subsequently, the rotating column 21 drives multiple scrapers 22 to scrape the material into a thin film. By setting up the liquid separator 31, the material entering the evaporator cylinder 11 is evenly covered, avoiding areas on the inner wall of the evaporator cylinder 11 that are not covered or are not adequately covered, thus ensuring an increase in the actual area participating in heat exchange and improving the overall heat transfer efficiency.

[0042] During the process of rotating the separation cylinder 13 driven by the rotating column 21, multiple rotating columns 32 also rotate synchronously against the inner wall of the evaporation cylinder 11. By setting multiple rotating columns 32, the friction between the separation cylinder 13 and the evaporation cylinder 11 is reduced, and the service life of the equipment is extended.

[0043] After the equipment has been used for a period of time, the worker first removes the separator 13 from the upper end of the evaporator body 11; then removes the liquid separator 31 from the limiting plate 211 so that the limiting post 212 is disengaged from the limiting hole 312; then, rotates the fixing stud 34 so that the fixing stud 34 is disengaged from the threaded hole 233 and the mounting hole 331, and then removes the liquid separator 33 from the rotating post 21; at this time, the second fixing post 332 is disengaged from the second fixing hole 222; finally, the worker removes the scraper 22 from the insertion slot 231. The detachable structure can reduce the operation and maintenance costs.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scraped-film evaporator with good heat transfer effect, characterized in that, include: Evaporator body (1), the evaporator body (1) includes an evaporation cylinder (11), a heating cylinder (12) and a separation cylinder (13). The heating cylinder (12) is installed outside the evaporation cylinder (11), and the separation cylinder (13) is detachably installed at the upper end of the evaporation cylinder (11). The upper end of the evaporation cylinder (11) has a feed inlet (111). The scraper assembly (2) includes a rotating column (21) and a plurality of scrapers (22). The scrapers (22) are detachably mounted on the rotating column (21). The end face of the scraper (22) away from the rotating column (21) is separated from the evaporation cylinder (11) by a predetermined distance. The rotating column (21) is rotatably mounted inside the evaporation cylinder (11). The rotating column (21) has a limiting plate (211) and a plurality of limiting posts (212). The limiting posts (212) are fixedly mounted on the upper end face of the limiting plate (211). The plurality of limiting posts (212) are circumferentially distributed around the axis of the rotating column (21). The limiting plate (211) is positioned at a predetermined distance above the feed inlet (111). Liquid separation assembly (3), the liquid separation assembly (3) includes a liquid separation cylinder (31), the liquid separation cylinder (31) is configured as a frustum, the circumferential sidewall of the liquid separation cylinder (31) has a plurality of spaced liquid separation holes (311), the upper end face of the liquid separation cylinder (31) has a plurality of circumferentially distributed limiting holes (312), the inner wall of the upper end of the liquid separation cylinder (31) is attached to the limiting plate (211), the limiting post (212) is inserted into the limiting hole (312), and the sidewall of the liquid separation cylinder (31) is attached to the inner wall of the evaporation cylinder (11).

2. The scraped-film evaporator with good heat transfer effect according to claim 1, characterized in that: The liquid separation assembly (3) further includes a plurality of rotating columns (32), which are rotatably mounted on the lower end of the liquid separation cylinder (31). The plurality of rotating columns (32) are spaced apart and are in contact with the inner wall of the liquid separation cylinder (31).

3. A scraped-film evaporator with good heat transfer effect according to claim 2, characterized in that: The scraper assembly (2) further includes multiple sets of support columns (23), each set of support columns (23) is provided with multiple columns, one end of the multiple support columns (23) is fixedly connected, each set of support columns (23) is spaced apart, the rotating column (21) is inserted into one end of the multiple support columns (23) that are connected to each other, the support column (23) has a insertion groove (231) at one end away from the rotating column (21), and the scraper (22) is inserted into the insertion groove (231).

4. A scraped-film evaporator with good heat transfer effect according to claim 3, characterized in that: The support column (23) located at the bottom end of the rotating column (21) has a first fixing column (232) in the insertion groove (231), and the scraper (22) has a first fixing hole (221) at the lower end. The first fixing column (232) is inserted into the first fixing hole (221).

5. A scraped-film evaporator with good heat transfer effect according to claim 4, characterized in that: The liquid separation assembly (3) further includes a liquid separation plate (33) and a plurality of fixing studs (34). The liquid separation plate (33) has a plurality of circumferentially distributed mounting holes (331). The support column (23) located at the top of the rotating column (21) has a threaded hole (233). The fixing studs (34) are inserted into the mounting holes (331) and threadedly connected to the threaded holes (233). The liquid separation plate (33) is located below the liquid separation cylinder (31).

6. A scraped-film evaporator with good heat transfer effect according to claim 5, characterized in that: The scraper (22) has a second fixing hole (222) at its upper end, and the liquid separating plate (33) has a plurality of second fixing posts (332) arranged in a circular pattern at its lower end. The second fixing posts (332) are inserted into the second fixing hole (222).

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