Anti-scale centrifugal scraper film evaporator

Abstract

The utility model discloses an anti-scale centrifugal scraper film evaporator, which belongs to the technical field of centrifugal scraper film evaporators and comprises a film evaporator, a driving rod is rotatably arranged in the film evaporator, and a driving motor is arranged at the rotating position of the top end of the driving rod. According to the utility model, as the micro-convex texture of the micro-convex blocks is arranged on one side of the scraping plate, a micro turbulent flow can be generated between every two micro-convex blocks when the scraping plate rotates, so that a stable laminar flow state which possibly causes the formation of water scale originally can be damaged, materials and liquid can be mixed and flow more sufficiently, the deposition of the water scale is reduced, and the service life of the water scale is prolonged. Meanwhile, the stirring and scraping effects on materials are enhanced, in addition, a brush plate can be driven to stretch out and draw back to the surface of the inner wall of the film evaporator under the work of an air cylinder, then the brush plate is driven to rotationally clean scale on the inner wall of the film evaporator through rotation of a driving rod, manual work is not needed to enter the film evaporator for cleaning, and therefore a certain amount of manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal scraping thin-film evaporators, and particularly relates to a scale-proof centrifugal scraping thin-film evaporator. Background Technique

[0002] The thin-film evaporator is mainly applicable to concentration, evaporation, distillation and other process operations in industries such as chemical industry, food processing, pharmacy and environmental protection. The scraping thin-film evaporator mainly consists of a heating jacket and a scraper. Heating steam is introduced into the jacket. The scraper is mounted on a rotatable shaft, and there is a very small gap, usually 0.5-1.5 mm, between the scraper and the inner wall of the heating jacket. The feed liquid is preheated and then added tangentially from the upper part of the evaporator. Under the action of gravity and the rotating scraper, it is distributed on the inner wall to form a downward spiral thin film, and is continuously evaporated and concentrated during the downward process. The finished liquid is discharged from the bottom, and the secondary steam escapes from the top.

[0003] After the traditional thin-film evaporator is used for a long time, scale is likely to form on its inner wall. The scale not only affects the quality of the processed products, easily causes wear of the scraper, is not conducive to the normal progress of production work, but also manual cleaning is quite labor-consuming. Therefore, a scale-proof centrifugal scraping thin-film evaporator is needed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a scale-proof centrifugal scraping thin-film evaporator to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A scale-proof centrifugal scraping thin-film evaporator, including a thin-film evaporator, a driving rod is rotatably arranged in the thin-film evaporator, a driving motor is arranged at the rotation part of the top end of the driving rod, a plurality of scrapers are fixedly arranged on the driving rod, a plurality of micro-protrusions are arranged on one side of each scraper, two cylinders are arranged on one side of the driving rod, the two cylinders are located between two adjacent scrapers, a brush plate is fixedly arranged at one end of the two cylinders, limiting plates are fixedly connected to the adjacent sides of the two scrapers on one side, and the brush plate is located between the two limiting plates.

[0006] By providing micro bumps on the scraper, when the driving motor starts and drives the scraper to rotate and scrape the film through the driving rod, due to the micro convex texture of the micro bumps on one side of the scraper, tiny turbulences can be generated between every two micro bumps when the scraper rotates. This helps to disrupt the stable laminar flow state that might otherwise lead to scale formation, allowing the material and liquid to mix and flow more fully, reducing the deposition of scale, and enhancing the stirring and scraping effects on the material. In addition, under the action of the cylinder, the brush plate can be driven to extend and retract to the inner wall surface of the thin-film evaporator, and then the rotation of the driving rod drives the brush plate to rotate and clean the scale on the inner wall of the thin-film evaporator, eliminating the need for manual entry into the thin-film evaporator for cleaning, thus saving a certain amount of labor.

[0007] As a preferred embodiment, a discharge port is provided on the lower surface of the thin-film evaporator.

[0008] As a preferred embodiment, support columns are provided on the thin-film evaporator.

[0009] As a preferred embodiment, a feed port is provided on the thin-film evaporator.

[0010] As a preferred embodiment, the outer surface of the micro bumps is an arc surface.

[0011] As a preferred embodiment, the driving motor is fixedly arranged on the thin-film evaporator.

[0012] By providing limit plates, when the brush plate rotates to scrape and clean the inner wall of the thin-film evaporator, the impurities scraped by the brush plate will accumulate on one side of the brush plate. At this time, due to the arrangement of the two limit plates, the impurities will be blocked by the limit plates, preventing the impurities from falling into the central part of the multiple scrapers and making it difficult to remove. Moreover, when the cylinder retracts, it will drive the brush plate to scrape between the two limit plates, thereby facilitating the scraping of the impurities accumulated on both sides of the brush plate, and thus facilitating the cleaning of the brush plate itself.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the present utility model, by providing micro bumps on the scraper, when the driving motor starts and drives the scraper to rotate and scrape the film through the driving rod, due to the micro convex texture of the micro bumps on one side of the scraper, tiny turbulences can be generated between every two micro bumps when the scraper rotates. This helps to disrupt the stable laminar flow state that might otherwise lead to scale formation, allowing the material and liquid to mix and flow more fully, reducing the deposition of scale, and enhancing the stirring and scraping effects on the material. In addition, under the action of the cylinder, the brush plate can be driven to extend and retract to the inner wall surface of the thin-film evaporator, and then the rotation of the driving rod drives the brush plate to rotate and clean the scale on the inner wall of the thin-film evaporator, eliminating the need for manual entry into the thin-film evaporator for cleaning, thus saving a certain amount of labor.

[0015] In this utility model, by setting up a limiting plate, when the brush plate rotates to scrape and clean the inner wall of the thin-film evaporator, the impurities scraped by the brush plate will accumulate on one side of the brush plate. At this time, due to the setting of the two limiting plates, the impurities will be blocked by the limiting plates, preventing the impurities from falling into the central part of the multiple scraping plates and causing difficulty in taking them out. Moreover, when the air cylinder retracts, it will drive the brush plate to scrape between the two limiting plates, thereby facilitating the scraping off of the accumulated impurities on both sides of the brush plate, and thus facilitating the cleaning of the brush plate itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of this utility model;

[0017] Figure 2 is a schematic diagram of the sectional three-dimensional structure of this utility model;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the limiting plate of this utility model;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the brush plate of this utility model.

[0020] In the figure: 1, thin-film evaporator; 2, driving rod; 3, driving motor; 4, scraping plate; 5, micro-protrusion; 6, air cylinder; 7, brush plate; 8, limiting plate; 9, support column; 10, discharge port; 11, feed port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will further describe this utility model in conjunction with the embodiments.

[0022] The following embodiments are used to illustrate this utility model, but cannot be used to limit the protection scope of this utility model. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement to the method of this utility model under the premise of the concept of this utility model belongs to the protection scope required by this utility model.

[0023] Please refer to Figures 1-4, the present utility model provides a scale-proof centrifugal scraper thin-film evaporator, which includes a thin-film evaporator 1. A driving rod 2 is rotatably arranged inside the thin-film evaporator 1. A driving motor 3 is arranged at the rotating part of the top end of the driving rod 2. A plurality of scrapers 4 are fixedly arranged on the driving rod 2. A plurality of micro-protrusions 5 are arranged on one side of each scraper 4. Two cylinders 6 are arranged on one side of the driving rod 2. The two cylinders 6 are located between two adjacent scrapers 4. One end of the two cylinders 6 is jointly and fixedly provided with a brush plate 7. Restricting plates 8 are fixedly connected to the adjacent sides of the two scrapers 4 on one side. The brush plate 7 is located between the two restricting plates 8. By arranging the micro-protrusions 5 on the scraper 4, when the driving motor 3 starts to drive the scraper 4 to rotate and scrape the film through the driving rod 2, due to the micro-protrusion texture of the micro-protrusions 5 on one side of the scraper 4, tiny turbulences can be generated between every two micro-protrusions 5 when the scraper 4 rotates. Thereby, it helps to disrupt the smooth laminar flow state that may originally cause scale formation, enables the material and liquid to be more fully mixed and flow, reduces the deposition of scale, and at the same time enhances the stirring and scraping effects on the material. In addition, under the action of the cylinder 6, the brush plate 7 can be driven to extend and retract to the inner wall surface of the thin-film evaporator 1, and then the rotation of the driving rod 2 drives the brush plate 7 to rotate and clean the scale on the inner wall of the thin-film evaporator 1, eliminating the need for manual entry into the thin-film evaporator 1 for cleaning, thus saving a certain amount of labor.

[0024] A discharge port 10 is arranged on the lower surface of the thin-film evaporator 1.

[0025] Support columns 9 are arranged on the thin-film evaporator 1.

[0026] A feed port 11 is arranged on the thin-film evaporator 1.

[0027] The outer part of the micro-protrusion 5 is an arc surface.

[0028] The driving motor 3 is fixedly arranged on the thin-film evaporator 1. By arranging the restricting plates 8, when the brush plate 7 rotates to scrape and clean the inner wall of the thin-film evaporator 1, the impurities scraped by the brush plate 7 will accumulate on one side of the brush plate 7. At this time, due to the arrangement of the two restricting plates 8, the impurities will be blocked by the restricting plates 8, preventing the impurities from falling into the central part of the plurality of scrapers 4 and causing difficulty in removal. And when the cylinder 6 retracts, it will drive the brush plate 7 to scrape between the two restricting plates 8, thereby facilitating the scraping off of the impurities accumulated on both sides of the brush plate 7, and thus facilitating the cleaning of the brush plate 7 itself.

[0029] The working principle and usage process of the present utility model are as follows: First, by setting micro-protrusions 5 on the scraper 4, when the driving motor 3 starts and drives the scraper 4 to rotate and scrape the film through the driving rod 2, due to the micro-protrusion texture of the micro-protrusions 5 on one side of the scraper 4, tiny turbulences can be generated between every two micro-protrusions 5 when the scraper 4 rotates. This helps to disrupt the stable laminar flow state that might originally cause scale formation, enabling the material and liquid to mix and flow more fully, reducing the deposition of scale, and at the same time enhancing the stirring and scraping effects on the material. In addition, under the action of the cylinder 6, the brush plate 7 can be driven to extend and retract to the inner wall surface of the thin-film evaporator 1, and then the rotation of the driving rod 2 drives the brush plate 7 to clean the scale on the inner wall of the thin-film evaporator 1. Moreover, by setting the limiting plate 8, when the brush plate 7 rotates to scrape and clean the inner wall of the thin-film evaporator 1, the impurities scraped on the brush plate 7 will accumulate on one side of the brush plate 7. At this time, due to the setting of the two limiting plates 8, the impurities will be blocked by the limiting plates 8, preventing the impurities from falling into the central part of the multiple scrapers 4 and causing difficulty in removal. And when the cylinder 6 retracts, it will drive the brush plate 7 to scrape between the two limiting plates 8, thereby facilitating the scraping of the impurities accumulated on both sides of the brush plate 7.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-scaling centrifugal scraped film evaporator, comprising a thin film evaporator (1), characterized in that: A driving rod (2) is rotatably arranged inside the thin film evaporator (1), a driving motor (3) is arranged at the rotating position of the top end of the driving rod (2), a plurality of scrapers (4) are fixedly arranged on the driving rod (2), a plurality of micro-bumps (5) are arranged on one side of each scraper (4), two cylinders (6) are arranged on one side of the driving rod (2), the two cylinders (6) are located between two adjacent scrapers (4), a brush plate (7) is fixedly arranged at one end of the two cylinders (6), and a limiting plate (8) is fixedly connected to the adjacent sides of the two scrapers (4) on one side, and the brush plate (7) is located between the two limiting plates (8).

2. The anti-scaling centrifugal scraped film evaporator according to claim 1, characterized in that: The lower surface of the thin film evaporator (1) is provided with a discharge port (10).

3. The anti-scaling centrifugal scraped film evaporator according to claim 1, characterized in that: The thin film evaporator (1) is provided with a support column (9).

4. The anti-scaling centrifugal scraped film evaporator according to claim 1, characterized in that: The thin film evaporator (1) is provided with a feed inlet (11).

5. The anti-scaling centrifugal scraped film evaporator according to claim 1, characterized in that: The outer portion of the micro-bump (5) is a curved surface.

6. The anti-scaling centrifugal scraped film evaporator according to claim 1, characterized in that: The driving motor (3) is fixedly arranged on the thin film evaporator (1).

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