Hollow shaft internal circulation scraper type film evaporator

Abstract

The utility model relates to the technical field of film evaporators, in particular to a hollow shaft internal circulation scraper type film evaporator, which comprises a separation cylinder, a hollow shaft arranged in the separation cylinder along the vertical direction and a plurality of scrapers arranged on the hollow shaft, a circulation flow channel is arranged in the hollow shaft, a driving mechanism is arranged at the top of the separation cylinder, and the scraper is arranged on the separation cylinder. The disassembling device is connected to the separation barrel and used for driving the separation barrel to rotate and ascend and descend to a proper disassembling position, the disassembling device comprises a bearing seat, a lifting mechanism arranged on the bearing seat and a rotating mechanism connected with the separation barrel and the lifting mechanism, and the separation barrel is composed of a plurality of sets of detachable barrel bodies; and a flange plate is arranged between every two adjacent detachable cylinders. According to the utility model, the separation cylinder is arranged to be a plurality of mutually connected detachable cylinder bodies, the separation cylinder can be disassembled to facilitate maintenance of internal parts, and the disassembly device is arranged to facilitate adjustment of the evaporator to a proper angle position for disassembly and assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin film evaporator technical field especially relates to a hollow shaft internal circulation scraper type thin film evaporator. BACKGROUND

[0002] With the development of industrial technology, thin film evaporator because of its high heat exchange efficiency and wide application field, in chemical industry, pharmacy, food processing industry has been widely applied. The working principle of thin film evaporator is through the rotating scraper even distribution material on the evaporation surface, form thin layer, thereby accelerating the evaporation process, improve heat exchange efficiency. The traditional thin film evaporator usually adopts fixed structure, its internal heat transfer surface and scraper are difficult to clean and maintain, this not only limits the equipment maintenance convenience, also influences production efficiency and product quality. SUMMARY

[0003] In order to solve the problems in the above background art, the utility model provides a hollow shaft internal circulation scraper type thin film evaporator.

[0004] The utility model solves the technical scheme that it adopts: a hollow shaft internal circulation scraper type thin film evaporator, including separation cylinder, hollow shaft along vertical direction is arranged in the separation cylinder and the scraper of being arranged on the hollow shaft, the circulation flow channel for introducing and discharging heating medium is arranged in the hollow shaft, the separation cylinder top is provided with the drive mechanism for driving the rotation of hollow shaft, still include the dismounting device for driving the rotation and lifting to suitable dismounting position of separation cylinder, the dismounting device includes bearing seat, sets up the lifting mechanism on bearing seat and the rotation mechanism of connecting separation cylinder and lifting mechanism, the separation cylinder is composed of multiple groups of detachable cylinder body, and the flange plate is arranged between each adjacent detachable cylinder body.

[0005] Through adopting the above technical scheme, the rotation mechanism can be driven to rotate the separation cylinder to the appropriate position, and the lifting mechanism can be driven to lift the separation cylinder to the appropriate dismounting height, so that each detachable cylinder body can be dismounted one by one, facilitating the maintenance of the internal components.

[0006] Further, the lifting mechanism includes a first drive motor arranged on the top of the bearing seat, a transmission screw rod arranged vertically on the bearing seat and in transmission connection with the first drive motor, a lifting seat in threaded connection with the transmission screw rod, and a guide rail in sliding connection with the lifting seat and parallel to the transmission screw rod.

[0007] By adopting the above technical scheme, the lifting seat can be smoothly lifted along the guide rail by the first drive motor to drive the separation cylinder to lift.

[0008] Further, the rotating mechanism comprises a clamping arm clamping and fixing the separation cylinder and a rotating cylinder fixed on the lifting seat, and the output end of the rotating cylinder is fixedly connected with the clamping arm and can drive the clamping arm to rotate.

[0009] By adopting the above technical scheme, the rotating cylinder rotates to drive the clamping arm to rotate the separation cylinder, so as to be adjusted to a suitable disassembling angle.

[0010] Further, each detachable cylinder body comprises an inner cylinder wall and an outer cylinder wall, and a heating interlayer is arranged between the inner cylinder wall and the outer cylinder wall, and each inner cylinder wall is provided with a plug-in groove and a plug-in flange matched with the plug-in groove at both ends.

[0011] By adopting the above technical scheme, the sealing design between the plug-in groove and the plug-in flange ensures the sealing property of the heating interlayer and prevents the leakage of the heating medium.

[0012] Further, the driving mechanism comprises a second driving motor arranged at the top of the separation cylinder and a transmission assembly, one end of the transmission assembly is connected with the second driving motor, and the other end is connected with the hollow shaft.

[0013] By adopting the above technical scheme, the second driving motor drives the hollow shaft to rotate stably.

[0014] In conclusion, the beneficial effects of the present application are as follows: the separation cylinder is designed in a sectional manner, the sections are connected through flanges, and the rotating mechanism and the lifting mechanism are designed, so that the separation cylinder can be easily rotated to a position easy to operate and adjusted to a suitable height, thereby facilitating the disassembly and assembly of the separation cylinder and the maintenance of the internal components.

[0015] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the overall structure of the embodiment;

[0017] Figure 2 It is a sectional view of the embodiment;

[0018] Figure 3 It is a local enlarged schematic view of the embodiment.

[0019] In the figure: 1. Separation cylinder; 11. Hollow shaft; 12. Scraper; 13. Circulation channel; 2. Removable cylinder; 21. Outer cylinder wall; 211. Flange; 22. Inner cylinder wall; 221. Plug-in groove; 222. Plug-in flange; 23. Heating interlayer; 3. Disassembly device; 31. Support seat; 32. Lifting mechanism; 321. First drive motor; 322. Transmission screw; 323. Lifting seat; 324. Guide rail; 33. Rotating mechanism; 331. Clamping arm; 332. Rotating cylinder; 4. Driving mechanism; 41. Second drive motor; 42. Transmission assembly. DETAILED DESCRIPTION

[0020] In order to make the content of the present invention more clearly understood, the present invention will be further described below based on specific embodiments in conjunction with the accompanying drawings.

[0021] It should be noted that the terms "center," "upper," "lower," "front," "back," "left," "right," "inner," and "outer" used herein to indicate positions or locations are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Unless otherwise specified, "plurality" means two or more.

[0022] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0023] like Figures 1 to 3 As shown, a thin film evaporator with a scraper 12 circulating in a hollow shaft 11 is provided, which includes a separation drum 1, a hollow shaft 11 arranged in the separation drum 1 along the vertical direction, and a plurality of scrapers 12 arranged on the hollow shaft 11 for evenly distributing the material on the inner wall of the separation drum 1 to form a thin film, thereby accelerating the evaporation process. A circulation flow channel 13 for introducing and discharging a heating medium is provided in the hollow shaft 11, and a driving mechanism 4 for driving the hollow shaft 11 to rotate is provided on the top of the separation drum 1; wherein this embodiment also includes a disassembly device 3 connected to the separation drum 1 for driving it to rotate and lift to a suitable disassembly position, the disassembly device 3 includes a bearing seat 31, a lifting mechanism 32 provided on the bearing seat 31, and a rotating mechanism 33 connecting the separation drum 1 and the lifting mechanism 32, and the separation drum 1 is composed of a plurality of groups of detachable cylinders 2, and a flange 211 is provided between each adjacent detachable cylinder 2.

[0024] The separation cylinder 1 of the present embodiment is composed of multiple detachable cylinder bodies 2, and the connection between each cylinder body is connected by flanges 211. The separation cylinder 1 can be detached into multiple sections while ensuring the sealing performance, and the internal components and cylinder bodies can be conveniently cleaned and maintained. The separation cylinder 1 of the present embodiment is divided into four sections. The first section cylinder body is provided with a plurality of material inlets on the side wall, which are connected to the evaporation chamber inside the cylinder body. The material can enter from the inlet and be distributed on the inner wall of the cylinder body by the internal distributor, and then be scraped into a liquid film by the scraper 12. The second section cylinder body is provided with a secondary steam outlet, which can discharge the secondary steam generated in the circulating flow channel 13. The third section cylinder body is provided with a condensate outlet on the side wall, which can discharge the condensate. The fourth section cylinder body is provided with a material outlet at the bottom, which can discharge the concentrated material. When maintenance is required, first start the rotating mechanism 33 of the dismounting device 3 to rotate the separation cylinder 1 to a convenient operating position. Then start the lifting mechanism 32 to drive the rotated separation cylinder 1 to the appropriate dismounting height. Then loosen the flange 211 connecting bolts between the adjacent detachable cylinder bodies 2 with tools, and the internal part of the separation cylinder 1 can be maintained.

[0025] As shown in Figure 1 , the lifting mechanism 32 of the present embodiment includes a first drive motor 321 arranged on the top of the bearing seat 31, a transmission screw 322 arranged vertically on the bearing seat 31 and in transmission connection with the first drive motor 321, a lifting seat 323 in threaded connection with the transmission screw 322, and a guide rail 324 in sliding connection with the lifting seat 323 and parallel to the transmission screw 322. When lifting is required, the first drive motor 321 transmits rotary motion to the transmission screw 322. With the rotation of the screw, the lifting seat 323 in threaded connection with the screw moves linearly along the guide rail 324 parallel to the screw. In turn, the rotating mechanism 33 and the evaporator main body are vertically positioned.

[0026] As shown in Figure 1 , the rotating mechanism 33 of the present embodiment includes a clamping arm 331 clamping and fixing the separation cylinder 1, and a rotary air cylinder 332 fixedly arranged on the lifting seat 323. The output end of the rotary air cylinder 332 is fixedly connected with the clamping arm 331 and can drive it to rotate. The annular clamping part of the clamping arm 331 clamps and fixes the cylinder body in the middle, and the rotary air cylinder 332 is fixedly arranged on the side of the lifting seat 323 facing the separation cylinder 1, providing rotary power and driving the clamping arm 331 to rotate through its output end.

[0027] As shown in Figure 2 and Figure 3As shown, each detachable cylinder 2 of the embodiment comprises an inner cylinder wall 22 and an outer cylinder wall 21, and a heating interlayer 23 is arranged between the inner cylinder wall 22 and the outer cylinder wall 21, and each inner cylinder wall 22 is provided with a plug-in groove 221 and a plug-in flange 222 matched with the plug-in groove 221 at both ends. The inner cylinder wall 22 and the outer cylinder wall 21 jointly constitute the main structure of the cylinder of the separation cylinder 1, the inner cylinder wall 22 directly contacts the material, and the outer cylinder wall 21 provides structural support. A heating interlayer 23 is arranged between the two, which is used to accommodate a heating medium (such as steam) to ensure uniform heating of the material. The inner cylinder wall 22 of each detachable cylinder 2 is provided with a plug-in groove 221 and a matched plug-in flange 222 at both ends, and the plug-in groove 221 and the plug-in flange 222 are matched to realize quick connection and disassembly between adjacent cylinders. A sealing ring or gasket should be arranged between the plug-in groove 221 and the plug-in flange 222 to ensure the sealing of the connection and prevent leakage of the heating medium.

[0028] As shown, Figure 1 The driving mechanism 4 of the embodiment comprises a second driving motor 41 arranged at the top of the separation cylinder 1 and a transmission assembly 42, one end of which is connected to the second driving motor 41 and the other end of which is connected to the hollow shaft 11. The second driving motor 41 is arranged at the top of the separation cylinder 1 and can provide rotary power and drive the hollow shaft 11 to rotate through the transmission assembly 42.

[0029] In summary, the embodiment has the following advantages: the embodiment adopts a segmented design for the separation cylinder 1, and the segments are connected through the flange 211, and through the design of the rotating mechanism 33 and the lifting mechanism 32, the separation cylinder 1 can be easily rotated to a position that is easy to operate and adjusted to an appropriate height for disassembly and assembly of the separation cylinder 1 for maintenance of the internal components. The heating interlayer 23 arranged between the inner cylinder wall 22 and the outer cylinder wall 21 can ensure heating efficiency and maintain the stability and safety of the equipment. At the same time, the design of the plug-in groove 221 and the plug-in flange 222 realizes quick connection and disassembly between adjacent cylinders, ensures good sealing, and avoids leakage of the heating medium.

[0030] The above-described embodiments are only preferred embodiments of the present application, and cannot be used to limit the protection scope of the present application. Any non-essential changes and modifications made by those skilled in the art based on the application shall fall within the protection scope of the present application.

Claims

1. A hollow shaft internal circulation scraper thin film evaporator, comprising a separation drum, a hollow shaft vertically disposed within the separation drum, and a plurality of scrapers arranged on the hollow shaft, wherein a circulation flow channel for introducing and discharging a heating medium is disposed within the hollow shaft, and a driving mechanism for driving the hollow shaft to rotate is disposed on the top of the separation drum, characterized in that: It also includes a disassembly device connected to the separation cylinder for driving it to rotate and lift to a suitable disassembly position, the disassembly device includes a bearing seat, a lifting mechanism provided on the bearing seat, and a rotating mechanism connecting the separation cylinder and the lifting mechanism, the separation cylinder is composed of multiple groups of detachable cylinders, and a flange is provided between each adjacent detachable cylinder.

2. The hollow shaft internal circulation scraped film evaporator according to claim 1, characterized in that: The lifting mechanism includes a first drive motor arranged on the top of the supporting seat, a transmission screw vertically arranged on the supporting seat and transmission-connected to the first drive motor, a lifting seat threadedly connected to the transmission screw, and a guide rail slidingly connected to the lifting seat and parallel to the transmission screw.

3. The hollow shaft internal circulation scraped film evaporator according to claim 2, characterized in that: The rotating mechanism includes a clamping arm for clamping and fixing the separation cylinder and a rotating cylinder fixed on the lifting seat. The output end of the rotating cylinder is fixedly connected to the clamping arm and can drive the clamping arm to rotate.

4. The hollow shaft internal circulation scraped film evaporator according to claim 1, characterized in that: Each of the detachable cylinders includes an inner cylinder wall and an outer cylinder wall, a heating interlayer is provided between the inner cylinder wall and the outer cylinder wall, and a plug-in groove and a plug-in flange matching the plug-in groove are respectively provided at both ends of each of the inner cylinder walls.

5. The hollow shaft internal circulation scraped film evaporator according to claim 1, characterized in that: The driving mechanism includes a second driving motor and a transmission assembly provided on the top of the separation cylinder. One end of the transmission assembly is connected to the second driving motor, and the other end is connected to the hollow shaft.

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