High efficiency wiped film evaporator

Abstract

The utility model discloses a kind of high-efficiency scraper type film evaporators, belong to chemical machinery and equipment field, including base, further including shell assembly, fixedly connected on shell;Lifting assembly, rotationally connected on shell assembly;Concentrate component, fixedly connected on shell assembly;The shell assembly, including the conical barrel fixedly connected on base, the collecting tube fixedly connected on conical barrel, the shell fixedly connected on conical barrel, the feed hole opened on shell, the electrode groove opened on shell.The utility model passes through dispersing pipe and dispersing hole and the large radius fillet on dispersing hole, so that raw materials can follow large radius fillet and stick to the inner wall of heating barrel, not spray out, while heating barrel is heated as a whole, increase heating area, so that heating evaporation is more uniform and rapid, using the rotation of blade and the inclination angle of conical barrel and heating barrel, increase heating length, improve heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery and equipment technology, specifically a high-efficiency scraped thin-film evaporator. Background Technology

[0002] A scraped-film evaporator is a high-efficiency evaporation device that forces materials to form a uniform film on the heating surface by rotating scrapers. It utilizes centrifugal force and gravity to make the material flow along the heating wall and evaporate rapidly. This device is widely used in food concentration, chemical separation and pharmaceutical purification, and is especially suitable for the processing of high-viscosity, heat-sensitive or easily scaled materials. The evaporation efficiency can be precisely controlled by adjusting the scraper speed and heating temperature.

[0003] Existing scraped-film evaporators suffer from insufficient drying speed in practical applications; scale easily forms on the surface of the heating tubes due to material residue, leading to reduced heat transfer efficiency and prolonged evaporation time; in addition, traditional fixed-spacing scrapers cannot adapt to different material thicknesses, resulting in excessively thick films in some areas that affect evaporation performance; furthermore, cleaning and maintenance become difficult after long-term operation, further exacerbating the risks of increased energy consumption and decreased production efficiency; therefore, there is an urgent need to optimize the structural design to improve overall performance.

[0004] An investigation revealed that a Chinese utility model patent discloses a high-efficiency rotary scraper-type thin-film evaporator (publication number: CN212680091U), comprising an evaporation chamber for evaporation and concentration, heating tubes for heating, and a heating chamber for providing heating steam. The evaporation chamber is a hollow cylinder, with the hollow part penetrating the lower wall. A ring of heating tubes is fixedly installed on the outer side of the evaporation chamber. A heating chamber for providing heating steam to the heating tubes is located on the left side of the evaporation chamber. This utility model has a simple structure and is easy to use. By setting stirring blades on the rotating column that drives the scraper, the propeller blades stir the raw materials in the evaporation chamber and simultaneously throw the raw materials against the inner wall of the evaporation chamber through centrifugal force, allowing the raw materials to be fully heated and concentrated on the inner wall of the evaporation chamber. At the same time, the rotation of the propeller blades carries the raw materials from bottom to top, preventing the raw materials from falling quickly, increasing the heating time of the raw materials, and making the evaporation and concentration more thorough and faster.

[0005] In existing technologies, raw materials are stirred and evaporated and concentrated through an evaporation chamber, heating tubes, and stirring blades. Since the temperature of the heating tubes is relatively high compared to other areas, the raw materials near the heating tubes are over-concentrated, causing scaling and affecting cleaning efficiency.

[0006] Therefore, this invention provides a high-efficiency scraped thin-film evaporator to solve the above problems. Utility Model Content

[0007] (a) Technical problems to be solved This invention provides a high-efficiency scraped thin-film evaporator, which aims to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency scraped thin-film evaporator, including a base, a shell assembly fixedly connected to the shell, a lifting assembly rotatably connected to the shell assembly, and a concentration assembly fixedly connected to the shell assembly; The outer casing assembly includes a conical barrel fixedly connected to the base, a collection pipe fixedly connected to the conical barrel, a housing fixedly connected to the conical barrel, a feed hole opened on the housing, and an electrode groove opened on the housing.

[0009] As a preferred technical solution of this application, the lifting assembly includes a top cover fixedly connected to the housing, a shaft hole opened on the top cover, a steam pipe fixedly connected to the top cover, a drive shaft rotatably connected in the shaft hole, a motor fixedly connected to one end of the drive shaft, and blades fixedly connected to the drive shaft.

[0010] As a preferred technical solution of this application, the concentration component includes a heating tank fixedly connected to the outer shell component, an electrode post fixedly connected to the heating tank, a dispersion hole opened on the heating tank, a dispersion tube fixedly connected to the feed hole, and a main pipe fixedly connected to the dispersion tube.

[0011] As a preferred technical solution of this application, the blade is a spiral cone shape with a gap of 2 to 5 mm between it and the inner wall of the heating barrel, so that the blade will not interfere with the inner wall of the heating barrel when it rotates.

[0012] As a preferred technical solution of this application, the corners of the dispersion holes on the inner wall of the heating barrel are rounded with a large radius, and the end of the dispersion tube and the corners of the dispersion holes are smoothly transitioned.

[0013] As a preferred technical solution of this application, the raw material flow rate and pressure in the dispersion tube and the main tube are low.

[0014] This invention utilizes the dispersion tube, dispersion hole, and large radius rounded corners on the dispersion hole to allow the raw material to flow out along the inner wall of the heating barrel without spraying out. At the same time, the entire heating barrel is heated, increasing the heating area and making the heating and evaporation more uniform and rapid. The rotation of the blades and the tilt angle of the cone and heating barrel increase the heating time and improve the heating efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view for practical use; Figure 3 This is a partial sectional view for this utility model; Figure 4 This is a structural diagram of the heating tank and outer shell assembly of this utility model.

[0016] In the diagram: 1. Base; 2. Outer shell assembly; 21. Conical barrel; 22. Collection pipe; 23. Shell; 24. Feed port; 25. Electrode groove; 3. Lifting assembly; 31. Top cover; 32. Shaft hole; 33. Steam pipe; 34. Drive shaft; 35. Motor; 36. Blade; 4. Concentration assembly; 41. Heating tank; 42. Electrode column; 43. Dispersion hole; 44. Dispersion pipe; 45. Main pipe; 46. Rounded corner. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a high-efficiency scraped thin-film evaporator, such as... Figures 1-4 As shown, it includes a base 1, a housing assembly 2 fixedly connected to the housing; a lifting assembly 3 rotatably connected to the housing assembly 2; and a concentrating assembly 4 fixedly connected to the housing assembly 2. The outer casing assembly 2 includes a conical barrel 21 fixedly connected to the base 1, a collection pipe 22 fixedly connected to the conical barrel 21, a housing 23 fixedly connected to the conical barrel 21, a feed hole 24 opened on the housing 23, and an electrode groove 25 opened on the housing 23.

[0019] The lifting assembly 3 includes a top cover 31 fixedly connected to the housing 23, a shaft hole 32 opened on the top cover 31, a steam pipe 33 fixedly connected to the top cover 31, a drive shaft 34 rotatably connected in the shaft hole 32, a motor 35 fixedly connected to one end of the drive shaft 34, and blades 36 fixedly connected to the drive shaft 34.

[0020] The concentration component 4 includes a heating tank 41 fixedly connected to the outer shell component 2, an electrode post 42 fixedly connected to the heating tank 41, a dispersion hole 43 opened on the heating tank 41, a dispersion tube 44 fixedly connected to the feed hole 24, and a main pipe 45 fixedly connected to the dispersion tube 44.

[0021] The blade 36 is a spiral cone shape and has a gap of 2 with the inner wall of the heating barrel 41. When the blade 36 rotates, it will not interfere with the inner wall of the heating barrel 41.

[0022] The corners of the dispersion holes 43 on the inner wall of the heating barrel 41 are rounded with a large radius 46, and the end of the dispersion tube 44 smoothly transitions to the corners of the dispersion holes 43.

[0023] The raw material flow rate and pressure are low in the dispersion tube 44 and the main tube 45.

[0024] Specifically, traditional scraped-film evaporators use heating tubes for heating and evaporation. Since the heating tubes are generally spiral-shaped and have a relatively high temperature compared to other parts, the raw material concentration rate is too fast, which eventually leads to scaling, making it difficult to clean, affecting heating efficiency, and even causing danger. The conical barrel 21 and heating barrel 41 in the outer shell assembly 2 both adopt a conical structure, and are lifted by the rotating blades 36 when the raw material flows, preventing the raw material liquid from accumulating, extending the heating time, and increasing heating efficiency. At the same time, since the inner wall of the heating barrel 41 has an anti-corrosion coating, it is difficult for the raw material to adhere to the inner wall of the heating barrel 41, making the inner wall of the heating barrel 41 easy to clean and reducing subsequent maintenance costs.

[0025] The motor 35 provides power to drive the transmission shaft 34 to rotate, which in turn drives the blades 36 to rotate. The main pipe 45 guides the raw material liquid into the dispersion pipe 44. Due to the low liquid pressure in the main pipe 45 and the dispersion pipe 44, when the raw material liquid flows into the heating tank 41 through the dispersion pipe 44, the large radius rounded corners 46 allow the liquid to flow along the inner wall of the heating tank 41. The distance between the end of the blade 36 and the inner wall of the heating tank 41 is 2mm. When the blade 36 rotates, the thickness of the raw material liquid is controlled to be 2mm. With the heating of the heating tank 41, the raw material is quickly heated, evaporated, and concentrated. The generated steam is discharged through the steam pipe 33, and the concentrated product is discharged through the collection pipe 22.

[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency scraped-film evaporator, comprising a base (1), characterized in that: It also includes a housing assembly (2), which is fixedly connected to the housing; a lifting assembly (3), which is rotatably connected to the housing assembly (2); and a concentration assembly (4), which is fixedly connected to the housing assembly (2). The outer casing assembly (2) includes a conical barrel (21) fixedly connected to the base (1), a collection pipe (22) fixedly connected to the conical barrel (21), a housing (23) fixedly connected to the conical barrel (21), a feed hole (24) opened on the housing (23), and an electrode groove (25) opened on the housing (23). The concentration component (4) includes a heating barrel (41) fixedly connected to the outer shell component (2), an electrode post (42) fixedly connected to the heating barrel (41), a dispersion hole (43) opened on the heating barrel (41), a dispersion tube (44) fixedly connected to the feed hole (24), and a main pipe (45) fixedly connected to the dispersion tube (44).

2. The high-efficiency scraped thin-film evaporator according to claim 1, characterized in that: The lifting assembly (3) includes a top cover (31) fixedly connected to the housing (23), a shaft hole (32) opened on the top cover (31), a steam pipe (33) fixedly connected to the top cover (31), a drive shaft (34) rotatably connected in the shaft hole (32), a motor (35) fixedly connected to one end of the drive shaft (34), and blades (36) fixedly connected to the drive shaft (34).

3. The high-efficiency scraped thin-film evaporator according to claim 2, characterized in that: The blade (36) is a spiral cone shape and has a gap of 2-5 mm with the inner wall of the heating barrel (41). When the blade (36) rotates, it will not interfere with the inner wall of the heating barrel (41).

4. A high-efficiency scraped-film evaporator according to claim 3, characterized in that: The corners of the dispersion holes (43) on the inner wall of the heating barrel (41) are rounded with a large radius (46), and the end of the dispersion tube (44) and the corners of the dispersion holes (43) are smoothly connected.

5. A high-efficiency scraped-film evaporator according to claim 4, characterized in that: The raw material flow rate and pressure in the dispersion tube (44) and the main tube (45) are low.

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