Elastic scraper assembly applied to film evaporation dryer

Abstract

The utility model relates to an elastic scraper assembly applied to a film evaporation dryer, and relates to the field of film evaporation dryers. According to the technical scheme, the elastic scraper assembly is connected to a main shaft of the thin film evaporation dryer, the main shaft is driven by a motor installed on a rack to rotate in a barrel, the elastic scraper assembly comprises a connecting plate and a thin spring piece, and the first end of the connecting plate is connected with the main shaft; the first end of the thin spring piece is rotationally connected with the second end of the connecting plate, and the second end of the thin spring piece is used for scraping materials adhered to the inner wall of the barrel; the second end of the connecting plate is further provided with a limiting assembly used for limiting the circumferential direction of the thin spring piece. Under the condition, good performance can still be kept under the condition that the material viscosity and the scaling thickness change greatly. According to the design of the scraper assembly, application requirements under various working conditions are considered, challenges caused by material characteristic changes can be effectively handled, and the design and manufacturing process of the evaporator is greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin film evaporation dryer technical field, especially thin film evaporation dryer's elastic scraper subassembly of application. BACKGROUND

[0002] Thin film evaporation dryer as a kind of efficient evaporation equipment, it is widely used in chemical industry, food, pharmaceutical industry, its working principle is to form a thin liquid film on heating surface by material, material and heating surface are kept good contact by the action of scraper subassembly, to realize rapid evaporation.

[0003] However, in actual operation process, as material evaporates along the cylinder wall, scaling phenomenon inevitably occurs, and the degree of this scaling will intensify with time, while the viscosity of material can also change, these factors can affect evaporation efficiency and product quality. The traditional solution is to set different types of scraper subassembly according to different height inside the evaporator, to adapt to the situation of material viscosity change or scaling layer thickness increase. Such design can solve the problem to some extent, but also brings new challenges such as complex design, high manufacturing cost, spare parts variety and inconvenient maintenance. SUMMARY

[0004] The utility model aims at providing a kind of elastic scraper subassembly of application in thin film evaporation dryer, to solve the problems existing in the prior art described above.

[0005] To achieve the above object, the technical scheme adopted by the utility model is:

[0006] A kind of elastic scraper subassembly of application in thin film evaporation dryer, it is connected to the main shaft of thin film evaporation dryer, the main shaft is driven to rotate in cylinder by motor installed on rack, the elastic scraper subassembly of application in thin film evaporation dryer includes:

[0007] Connecting plate, its first end is connected with the main shaft;And

[0008] Thin spring sheet, its first end is rotatably connected with the second end of the connecting plate, its second end is used to ensure that material forms uniform thin layer on the inner wall of the cylinder;

[0009] Wherein, the second end of the connecting plate is further provided with limiting component for limiting the circumferential direction of the thin spring sheet.

[0010] In a possible implementation mode, the limiting component includes first limiting block and second limiting block located on both sides of the thin spring sheet.

[0011] In a possible implementation, when the thin spring sheet is radially coincident with the cylinder body, the first limiting block is in contact with the thin spring sheet, and the second limiting block is spaced apart from the thin spring sheet.

[0012] In a possible implementation, the second end of the connecting plate has a shaft hole, a rotating shaft is arranged in the shaft hole, and the rotating shaft sleeves at the upper and lower ends of the thin spring sheet are rotationally connected with the rotating shaft.

[0013] In a possible implementation, the elastic scraper assembly applied to the thin film evaporation dryer is at least two and is uniformly spaced along the axial direction of the main shaft.

[0014] In a possible implementation, the thickness of the thin spring sheet is less than or equal to 1 mm.

[0015] In a possible implementation, the thin spring sheet is made of stainless steel.

[0016] The technical scheme provided by the utility model has at least the following beneficial effects:

[0017] The elastic scraper assembly provided by the technical scheme is connected to the main shaft of the thin film evaporation dryer, the main shaft is driven to rotate in the cylinder body by the motor installed on the rack, the elastic scraper assembly comprises a connecting plate and a thin spring sheet, the first end of the connecting plate is connected with the main shaft, the first end of the thin spring sheet is rotationally connected with the second end of the connecting plate, and the second end of the thin spring sheet is used for ensuring that the material forms a uniform thin layer on the inner wall of the cylinder body; wherein the second end of the connecting plate is further provided with a limiting assembly for limiting the circumferential direction of the thin spring sheet. In this case, good performance can still be maintained when the viscosity and scale thickness of the material change greatly. The design of the scraper assembly takes into account the application requirements under various working conditions, which not only effectively copes with the challenges brought by the change of material characteristics, but also greatly simplifies the design and manufacturing process of the evaporator. Compared with the traditional method of configuring different types of scrapers according to different positions, this innovative solution only needs to use a single type of scraper assembly to meet the requirements of a wide range of working conditions, which not only reduces the difficulty of design and production, but also reduces the additional cost of replacing different specifications of scrapers, including spare parts inventory management and equipment maintenance. In addition, since the number and types of components are reduced, the stability and reliability of the system are also improved, thereby providing users with more economical and efficient options. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, together with the embodiments of the utility model, for explaining the utility model, and do not constitute a limitation on the utility model.

[0019] Figure 1The main view schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown.

[0020] Figure 2 The main view schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown.

[0021] Figure 3 The structure schematic diagram of the thin spring sheet of the elastic scraper assembly applied to the thin film evaporation dryer is shown.

[0022] Figure 4 The first working state schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown.

[0023] Figure 5 The second working state schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown.

[0024] In the drawings:

[0025] 1, main shaft; 2, rack; 3, motor; 4, barrel; 5, elastic scraper assembly applied to thin film evaporation dryer;

[0026] 51, connecting plate; 52, thin spring sheet; 53, limiting assembly;

[0027] 511, shaft hole; 512, rotating shaft; 521, rotating shaft sleeve; 531, first limiting block; 532, second limiting block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Wherein, same parts are indicated by same reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings accompanying the utility model specification, and the words "bottom" and "top", "inner" and "outer" refer to the directions towards or away from a particular component. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model specification, the meaning of "multiple" is two or more than two.

[0030] The utility model will be further described below in combination with the drawings and embodiments.

[0031] Figure 1 A front view schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown, Figure 2 A top view schematic diagram of the elastic scraper assembly applied to the thin film evaporation dryer in the thin film evaporation dryer is shown.

[0032] In detail, the elastic scraper assembly 5 applied to the thin film evaporation dryer is connected to the main shaft 1 of the thin film evaporation dryer, the main shaft 1 is driven to rotate in the cylinder 4 by the motor 3 installed on the rack 2, the elastic scraper assembly 5 applied to the thin film evaporation dryer includes: a connecting plate 51 and a thin spring sheet 52, the first end of the connecting plate 51 is connected with the main shaft 1, the first end of the thin spring sheet 52 is rotationally connected with the second end of the connecting plate 51, and the second end of the thin spring sheet 52 is used to scrape off the material adhered to the inner wall of the cylinder 4, wherein the second end of the connecting plate 51 is further provided with a limiting assembly 53 for limiting the circumferential direction of the thin spring sheet 52.

[0033] In the embodiment of the application, the thickness of the thin spring sheet 52 is less than or equal to 1mm, and the thin spring sheet 52 is made of stainless steel. This not only ensures its sufficient flexibility to meet the needs of different working conditions, but also provides the necessary strength and corrosion resistance to ensure long-term stable operation.

[0034] In the embodiment of the application, the elastic scraper assembly 5 applied to the thin film evaporation dryer is at least two and is uniformly spaced along the axial direction of the main shaft 1. Alternatively, in order to further improve the efficiency and adapt to different processing capacity requirements, the number of the elastic scraper assembly 5 applied to the thin film evaporation dryer can be flexibly adjusted according to the actual working condition, so as to ensure that the best operating state can be maintained during the entire evaporation process, improve the production efficiency and reduce the maintenance cost.

[0035] In the embodiment of the present application, the design of the elastic scraper assembly 5 applied to the thin film evaporation dryer aims to ensure that the material forms a uniform thin layer on the inner wall of the cylinder 4 of the thin film evaporation dryer, and effectively removes the material scale layer that may be adhered to the inner wall of the cylinder to maintain efficient heat transfer and product quality. In addition, the limiting assembly 53 arranged at the second end of the connecting plate 51 is used to limit the circumferential movement range of the thin spring sheet 52 to prevent it from being excessively bent or deviating from the predetermined position, thereby ensuring the consistency and reliability of the scraper operation.

[0036] Further, Figure 3 The structure diagram of the thin spring sheet of the elastic scraper assembly applied to the thin film evaporation dryer is shown, the second end of the connecting plate 51 has a shaft hole 511, a rotating shaft 512 is arranged in the shaft hole 511, and the upper and lower ends of the thin spring sheet 52 are rotationally connected with the rotating shaft 512 through rotating shaft sleeves 521. The limiting assembly 53 includes first limiting blocks 531 and second limiting blocks 532 located on both sides of the thin spring sheet 52. When the thin spring sheet 52 is radially coincident with the cylinder 4, the first limiting blocks 531 are in contact with the thin spring sheet 52, and the second limiting blocks 532 have a spacing from the thin spring sheet 52.

[0037] Next, the working principle of the elastic scraper assembly applied to the thin film evaporation dryer in the embodiment of the present application is described.

[0038] After the motor 3 is started, the main shaft 1 is rotated, and the elastic scraper assembly 5 applied to the thin film evaporation dryer is rotated in the cylinder 4 of the thin film evaporation dryer;

[0039] When no material is introduced into the cylinder 4, the thin spring sheet 52 is radially coincident with the cylinder 4, the first limiting blocks 531 are in contact with the thin spring sheet 52, and the second limiting blocks 532 have a spacing from the thin spring sheet 52, please refer to Figure 2 At this time, the gap between the thin spring sheet 52 and the inner wall of the cylinder 4 is designed as A close to 0;

[0040] As the material enters the cylinder 4, when the material resistance is small, the thin spring sheet 52 can form a film by relying on its own centrifugal force;

[0041] When the material resistance increases or the scale layer is formed, the thin spring sheet 52 is pushed to rotate back, and the thin spring sheet 52 cannot continue to rotate back when it meets the second limiting block 532, please refer to Figure 4 This state is the normal working state of the scheme, and the gap B is designed to be less than 2 mm, and at this time, the running state is similar to that of the fixed scraper, but is more flexible than the fixed scraper, which can work in a gap range of 0 to 2 mm;

[0042] When the material resistance continues to increase or the scale layer continues to thicken, please refer to Figure 5When the thin spring sheet 52 is bent too much, the material evaporation effect will eventually decrease, at which time the thin spring sheet 52 needs to be replaced. This process is smooth and does not cause violent vibration and sudden stoppage, so this structure has strong applicability, good applicability in variable working conditions, simple and convenient maintenance, safe use, and less sudden accidents.

[0043] When the thin spring sheet 52 is bent too much, the material evaporation effect will eventually decrease, at which time the thin spring sheet 52 needs to be replaced. This process is smooth and does not cause violent vibration and sudden stoppage, so this structure has strong applicability, good applicability in variable working conditions, simple and convenient maintenance, safe use, and less sudden accidents.

[0044] In summary, the technical solution can maintain good performance even when the material viscosity and scale thickness vary greatly. The design of the scraper assembly takes into account the application requirements in various working conditions, effectively addressing the challenges posed by changes in material properties, and greatly simplifying the design and manufacturing process of the evaporator. Compared to the traditional method of configuring different types of scrapers for different positions, this innovative solution only requires a single type of scraper assembly to meet a wide range of working condition requirements. This not only reduces the difficulty of design and production, but also reduces the additional costs associated with replacing different specifications of scrapers, including spare parts inventory management and equipment maintenance costs. In addition, reducing the number and types of components also helps to improve system stability and reliability, providing users with a more economical and efficient option.

[0045] In the embodiments disclosed in the present application, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integrated connection; "connection" can be direct connection, or indirect connection through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments disclosed in the present application can be understood according to the specific circumstances.

[0046] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should also be considered within the scope of protection of the present application.

Claims

1. A flexible blade assembly for use in a thin film evaporative dryer, which is connected to the main shaft (1) of the thin film evaporative dryer, the main shaft (1) is driven to rotate in the cylinder (4) by the motor (3) installed on the frame (2), characterized in that, The elastic scraper assembly (5) applied to the thin film evaporation dryer comprises: a connecting plate (51) connected with the main shaft (1) at a first end; and a thin spring sheet (52) rotationally connected with a second end of the connecting plate (51) at a first end and used for ensuring that a material forms a uniform thin layer on an inner wall of the cylinder (4); wherein a limiting assembly (53) for limiting a circumferential direction of the thin spring sheet (52) is further arranged at the second end of the connecting plate (51).

2. The elastomeric wiper blade assembly for use in a thin film evaporation dryer according to claim 1, characterized in that The limiting assembly (53) comprises a first limiting block (531) and a second limiting block (532) arranged at two sides of the thin spring sheet (52).

3. The elastomeric wiper blade assembly for use in a thin film evaporation dryer according to claim 2, characterized in that When the thin spring sheet (52) is radially coincident with the cylinder (4), the first limiting block (531) is in contact with the thin spring sheet (52), and the second limiting block (532) is spaced apart from the thin spring sheet (52).

4. The elastomeric wiper blade assembly for use in a thin film evaporation dryer of claim 1, wherein, The second end of the connecting plate (51) has a shaft hole (511), a rotating shaft (512) is arranged in the shaft hole (511), and rotating shaft sleeves (521) at upper and lower ends of the thin spring sheet (52) are rotationally connected with the rotating shaft (512).

5. The elastomeric wiper blade assembly for use in a thin film evaporation dryer of claim 1, wherein, The elastic scraper assembly (5) applied to the thin film evaporation dryer is at least two and is uniformly and spacedly distributed along an axial direction of the main shaft (1).

6. The elastomeric wiper blade assembly for use in a thin film evaporation dryer of claim 1, wherein, The thickness of the thin spring sheet (52) is less than or equal to 1 mm.

7. The elastomeric wiper blade assembly for use in a thin film evaporation dryer of claim 1, wherein, The thin spring sheet (52) is made of stainless steel.

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