Efficient centrifugal film vacuum evaporation device

Abstract

The utility model belongs to the technical field of film vacuum evaporation devices, and discloses an efficient centrifugal film vacuum evaporation device which comprises a shell, a heat exchange cavity is formed in the side surface of the shell, an air inlet is formed in the outer surface of the upper end of one side of the shell, and an overflow liquid recycling mechanism is arranged in the lower end of the shell. And by means of the mode that the materials which are not evaporated in time are recycled and reversely pumped into the functional rod, secondary treatment on the overflowing materials is omitted. According to the efficient centrifugal film vacuum evaporation device, an overflow liquid recycling mechanism is arranged in the lower end of the device, materials which are not evaporated in time and overflow and accumulate at the bottom can be efficiently recycled, reciprocating piston motion is achieved through the action of a spring between a functional cylinder and a piston rod, and under cooperation of a first one-way valve and a second one-way valve, the materials can be recycled. And the materials in the bearing ring are reversely pumped into the functional rod, so that the materials are recycled, and a complex, time-consuming and labor-consuming treatment process for the overflowing materials is omitted.

Description

Technical Field

[0001] This utility model relates to the technical field of thin film vacuum evaporation devices, specifically a high-efficiency centrifugal thin film vacuum evaporation device. Background Technology

[0002] In the chemical industry, centrifugal thin-film vacuum evaporation devices play an indispensable role in the synthesis, separation and purification of various compounds, as well as in the concentration of raw materials and solution treatment before formulation in the pharmaceutical field, and in key processes such as fruit juice concentration and syrup preparation in the food industry. The basic structure of a traditional centrifugal thin-film vacuum evaporation device is as follows: a heat exchange chamber is set inside the shell. After the material is introduced, it forms a thin film evenly on the inner wall of the device under vacuum conditions with the help of centrifugal force generated by the rotating parts. The heat transfer through the heat exchange chamber promotes the evaporation of the material, and the steam generated by evaporation is discharged from the exhaust port.

[0003] However, such traditional devices have revealed many drawbacks in actual production applications. During continuous operation, due to factors such as material characteristics and fluctuations in device operating parameters, some materials are always difficult to completely evaporate within the expected time. These unevaporated materials will slide down the inner wall of the device and accumulate at the bottom. In the past, dealing with these overflowing materials required manual collection or the use of additional equipment, followed by secondary processing using specialized processes and equipment. This process not only requires a large amount of manpower, increasing labor costs, but also requires the use of various containers, pipes, and processing equipment during material collection and secondary processing, greatly consuming material resources. At the same time, the entire processing process is time-consuming, seriously affecting production efficiency. More importantly, during the secondary processing, due to the complex operations involving multiple material transfers and switching between different processing conditions, the slightest carelessness can cause material loss, reduce product yield, or introduce impurities that cause material contamination, thereby seriously affecting the quality of the final product. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency centrifugal thin-film vacuum evaporation device to solve the problem mentioned in the background art that some materials cannot be evaporated in time and overflow and accumulate at the bottom of the device, requiring cumbersome secondary processing, which consumes a lot of manpower, material resources and time costs, and secondary processing is prone to material loss or pollution, affecting product quality and production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency centrifugal thin-film vacuum evaporation device, comprising a shell, a heat exchange chamber formed inside the side surface of the shell, an air inlet installed on the upper outer surface of one side of the shell, and an air outlet installed on the lower outer surface of one side of the shell, a motor fixedly installed on the lower outer surface of the shell, the upper end of the motor's output shaft penetrating the inner bottom surface of the shell, and a base cylinder fixedly connected to the upper end of the motor's output shaft, a functional rod fixedly connected to the upper end of the base cylinder, a transmission rod fixedly installed on the outer surface of the functional rod, a coating rod fixedly installed on the outer surface of the transmission rod, a coating groove formed on the outer surface of the coating rod, a scraper fixedly installed on the outer surface of the coating rod, a suction exhaust port installed at the upper end of the shell, and an overflow recovery mechanism provided inside the lower end of the shell. By recovering the material that fails to evaporate in time and pumping it back into the functional rod, the secondary treatment of the overflow material is eliminated.

[0006] The overflow recovery mechanism includes: a receiving ring, which is fixedly installed on the inner bottom surface of the outer shell, and a guide ring is fixedly installed on the inner bottom surface of the outer shell; a suction pipe is fixedly installed on one outer surface of the base cylinder, and a first one-way valve and a second one-way valve are fixedly installed inside the end of the suction pipe connected to the base cylinder; a functional cylinder is fixedly connected to the lower surface of the end of the suction pipe connected to the base cylinder, and a piston rod is installed inside the functional cylinder; the lower end of the piston rod penetrates the lower surface of the functional cylinder, and a rotating guide wheel is installed at the lower end of the piston rod.

[0007] Preferably, the upper end of the functional rod penetrates the upper surface of the housing, and the functional rod is sealed to the upper end of the housing, and the upper end of the functional rod is connected to a rotating external pipeline.

[0008] By adopting the above technical solution, the material can smoothly enter the functional rod through the external pipeline. During the operation of the device, the sealed connection can prevent outside air from entering the device and affecting the vacuum evaporation environment. The rotating external pipeline will not be obstructed by the rotation of the functional rod, ensuring a continuous and stable supply of material.

[0009] Preferably, the end of the functional rod located inside the housing is hollow, and the hollow part of the housing is connected to the coating tank.

[0010] Using the above technical solution, the material can flow smoothly from the hollow part of the functional rod into the coating tank, and then be evenly distributed on the inner surface of the shell under the action of centrifugal force to form a thin film, which provides conditions for subsequent efficient evaporation.

[0011] Preferably, the receiving ring is a hollow design with an opening at the upper end, and the receiving ring and the base cylinder are concentrically arranged.

[0012] The above technical solution allows the hollow design of the opening to easily receive materials that slide down from the inner wall of the device, and the concentric arrangement enables the receiving ring to collect materials more effectively, preventing materials from spilling or deviating from the collection area during the collection process.

[0013] Preferably, the guide ring and the base cylinder are concentrically arranged, and the upper surface of the guide ring is designed with an inclined surface that is higher at one end and lower at the other end, and the upper surface of the guide ring is in contact with the outer surface of the guide wheel.

[0014] By adopting the above technical solution, the concentric setting ensures that the guide wheel rolls stably on the guide ring, and the inclined surface design enables the guide wheel to drive the piston rod to reciprocate in the functional cylinder when it rotates with the base cylinder, thereby realizing the extraction and pumping of materials.

[0015] Preferably, the functional cylinder and the piston rod are connected by sliding friction, and a spring is connected between the functional cylinder and the piston rod. The upper end of the functional cylinder is connected to the suction tube, and the end of the functional cylinder connected to the suction tube is located between the first one-way valve and the second one-way valve. The lower end of the suction tube is located inside the lower end of the receiving ring, and a gap is left between the lower end face of the suction tube and the inner bottom surface of the receiving ring.

[0016] By adopting the above technical solution, the sliding friction connection and spring cooperation ensure that the piston rod can move back and forth flexibly in the functional cylinder. The setting of two one-way valves ensures that the material can only flow in one direction and is pumped into the functional rod from the receiving ring. The position and gap design of the lower end of the suction pipe facilitate the smooth entry of the material into the suction pipe, while avoiding blockage at the lower end of the suction pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This high-efficiency centrifugal thin-film vacuum evaporation device:

[0018] 1. An overflow recovery mechanism is installed inside the lower end of the device, which can efficiently recover materials that fail to evaporate in time and overflow and accumulate at the bottom. The receiving ring is fixedly installed on the inner bottom surface of the shell, concentric with the base cylinder, and is used to receive the overflow material. The piston rod inside the functional cylinder moves along the inclined surface of the guide ring with the guide wheel, and realizes the reciprocating piston movement through the action of the spring between the functional cylinder and the piston rod. With the cooperation of the first one-way valve and the second one-way valve, the material in the receiving ring is pumped back into the functional rod, realizing the recycling of the material and completely eliminating the complicated and time-consuming secondary processing process of overflow material. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the connection between the outer shell and the motor of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the connection cross-section of the functional rod, transmission rod, and coating rod of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the base cylinder and the suction tube of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the connection between the functional cylinder, piston rod, and guide wheel of this utility model.

[0025] In the diagram: 1. Outer shell; 2. Heat exchange chamber; 3. Air inlet; 4. Air outlet; 5. Motor; 6. Base cylinder; 7. Functional rod; 8. Transmission rod; 9. Coating rod; 10. Coating tank; 11. Scraper; 12. Receiving ring; 13. Guide ring; 14. Liquid suction pipe; 15. First check valve; 16. Second check valve; 17. Functional cylinder; 18. Piston rod; 19. Guide wheel; 20. Pressure extraction and exhaust port. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-6 This utility model provides a technical solution: a high-efficiency centrifugal thin-film vacuum evaporation device.

[0028] Example 1: This example discloses: a shell 1, a heat exchange chamber 2 is provided inside the side surface of the shell 1, an air inlet 3 is installed on the upper outer surface of one side of the shell 1, and an air outlet 4 is installed on the lower outer surface of one side of the shell 1. A motor 5 is fixedly installed on the lower outer surface of the shell 1, and the upper end of the output shaft of the motor 5 penetrates the inner bottom surface of the shell 1. A base cylinder 6 is fixedly connected to the upper end of the output shaft of the motor 5. A functional rod 7 is fixedly connected to the upper end of the base cylinder 6. A transmission rod 8 is fixedly provided on the outer surface of the functional rod 7, and a coating rod 9 is fixedly provided on the outer surface of the transmission rod 8. A coating groove 10 is provided on the outer surface of the coating rod 9, and a scraper 11 is fixedly provided on the outer surface of the coating rod 9. A suction exhaust port 20 is installed at the upper end of the shell 1.

[0029] The upper end of the function rod 7 penetrates the upper surface of the outer casing 1, and the function rod 7 is sealed to the upper end of the outer casing 1. The upper end of the function rod 7 is connected to a rotating outer pipe.

[0030] The end of the functional rod 7 located inside the housing 1 is hollow, and the hollow part of the housing 1 is connected to the coating tank 10;

[0031] When motor 5 is started, its output shaft drives the base cylinder 6, functional rod 7, transmission rod 8, and coating rod 9 to rotate together. Material enters from the upper end of functional rod 7 through the external pipeline. Since the end of functional rod 7 located inside the outer shell 1 is hollow and connected to the coating tank 10, the material flows into the coating tank 10 on the side surface of coating rod 9. Under the action of centrifugal force, the material is thrown to the inner surface of outer shell 1. At the same time, heat medium is introduced into heat exchange chamber 2 through air inlet 3. The heat medium flows in heat exchange chamber 2 and is discharged through air outlet 4, transferring heat to the material inside outer shell 1, causing the material to evaporate rapidly. The steam generated by evaporation is discharged from the suction exhaust port 20. Meanwhile, scraper 11 can scrape the material film on the surface of coating rod 9 to make the material film distribution more uniform and improve evaporation efficiency.

[0032] Example 2: This example discloses, based on Example 1, that an overflow recovery mechanism is provided inside the lower end of the outer shell 1. By recovering the material that fails to evaporate in time and pumping it back into the functional rod 7, the secondary processing of the overflow material is eliminated.

[0033] The overflow recovery mechanism includes: a receiving ring 12, which is fixedly installed on the inner bottom surface of the outer shell 1, and a guide ring 13 is fixedly installed on the inner bottom surface of the outer shell 1; a suction pipe 14 is fixedly installed on one side of the outer surface of the base cylinder 6, and a first one-way valve 15 and a second one-way valve 16 are fixedly installed inside the end of the suction pipe 14 connected to the base cylinder 6; a functional cylinder 17 is fixedly connected to the lower surface of the end of the suction pipe 14 connected to the base cylinder 6, and a piston rod 18 is installed inside the functional cylinder 17; the lower end of the piston rod 18 penetrates the lower surface of the functional cylinder 17, and a rotating guide wheel 19 is installed at the lower end of the piston rod 18.

[0034] The receiving ring 12 is a hollow design with an opening at the top, and the receiving ring 12 and the base cylinder 6 are concentrically arranged;

[0035] The guide ring 13 and the base cylinder 6 are concentrically arranged, and the upper surface of the guide ring 13 is a sloped design with one end higher than the other, and the upper surface of the guide ring 13 is in contact with the outer surface of the guide wheel 19.

[0036] The functional cylinder 17 and the piston rod 18 are connected by sliding friction, and a spring is connected between the functional cylinder 17 and the piston rod 18. The upper end of the functional cylinder 17 is connected to the suction tube 14, and the end of the functional cylinder 17 connected to the suction tube 14 is located between the first one-way valve 15 and the second one-way valve 16. The lower end of the suction tube 14 is located inside the lower end of the receiving ring 12, and a gap is left between the lower end face of the suction tube 14 and the inner bottom surface of the receiving ring 12.

[0037] When some material fails to evaporate in time and slides down the inner wall of the device, accumulating at the bottom of the outer shell 1, the overflow recovery mechanism starts working. The receiving ring 12 receives the overflowing material. When the base cylinder 6 rotates, it drives the suction pipe 14, functional cylinder 17, and other components to rotate synchronously. The guide wheel 19 rolls on the inclined surface of the guide ring 13. Since the upper surface of the guide ring 13 is an inclined surface with one end higher than the other, the guide wheel 19 drives the piston rod 18 to reciprocate inside the functional cylinder 17. When the piston rod 18 moves downward, the pressure inside the functional cylinder 17 decreases. Under atmospheric pressure, the material in the receiving ring 12 enters the suction pipe 14 through the lower opening of the suction pipe 14. At this time, the material is located inside the suction pipe 14 between the first one-way valve 15 and the second one-way valve 16. When the piston rod 18 moves upward, the pressure inside the functional cylinder 17 increases, and the material between the first one-way valve 15 and the second one-way valve 16 is pressed into the base cylinder 6 through the second one-way valve 16. The material is finally pumped into the functional rod 7, realizing the recycling of the material without the need for secondary processing of the overflow material.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency centrifugal thin-film vacuum evaporation device, comprising a shell (1), wherein a heat exchange chamber (2) is provided inside the side surface of the shell (1), and an air inlet (3) is installed on the upper outer surface of one side of the shell (1), and an air outlet (4) is installed on the lower outer surface of one side of the shell (1), characterized in that: A motor (5) is fixedly installed on the lower outer surface of the outer shell (1), and the upper end of the output shaft of the motor (5) penetrates the inner bottom surface of the outer shell (1). A base cylinder (6) is fixedly connected to the upper end of the output shaft of the motor (5). A functional rod (7) is fixedly connected to the upper end of the base cylinder (6). A transmission rod (8) is fixedly provided on the outer surface of the functional rod (7), and a coating rod (9) is fixedly provided on the outer surface of the transmission rod (8). A coating groove (10) is opened on the outer surface of the coating rod (9). A scraper (11) is fixedly provided on the outer surface of the coating rod (9). A suction exhaust port (20) is installed at the upper end of the outer shell (1). An overflow recovery mechanism is provided inside the lower end of the outer shell (1). By recovering the material that fails to evaporate in time and pumping it back into the functional rod (7), the secondary treatment of the overflow material is eliminated.

2. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 1, characterized in that: The overflow recovery mechanism includes: a receiving ring (12), which is fixedly installed on the inner bottom surface of the outer shell (1), and a guide ring (13) is fixedly installed on the inner bottom surface of the outer shell (1). A suction pipe (14) is fixedly installed on one side of the outer surface of the base cylinder (6), and a first one-way valve (15) and a second one-way valve (16) are fixedly installed inside the end of the suction pipe (14) connected to the base cylinder (6). A functional cylinder (17) is fixedly connected to the lower surface of the end of the suction pipe (14) connected to the base cylinder (6), and a piston rod (18) is installed inside the functional cylinder (17). The lower end of the piston rod (18) penetrates the lower surface of the functional cylinder (17), and a rotating guide wheel (19) is installed at the lower end of the piston rod (18).

3. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 1, characterized in that: The upper end of the functional rod (7) penetrates the upper surface of the outer shell (1), and the functional rod (7) is sealed to the upper end of the outer shell (1). The upper end of the functional rod (7) is connected to a rotating outer pipe.

4. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 1, characterized in that: The functional rod (7) is hollow at one end inside the outer shell (1), and the hollow part of the outer shell (1) is connected to the coating tank (10).

5. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 2, characterized in that: The receiving ring (12) is a hollow design with an opening at the upper end, and the receiving ring (12) and the base cylinder (6) are concentrically arranged.

6. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 2, characterized in that: The guide ring (13) and the base cylinder (6) are concentrically arranged, and the upper surface of the guide ring (13) is a sloped design with one end higher and the other end lower, and the upper surface of the guide ring (13) is in contact with the outer surface of the guide wheel (19).

7. The high-efficiency centrifugal thin-film vacuum evaporation device according to claim 2, characterized in that: The functional cylinder (17) and the piston rod (18) are connected by sliding friction, and a spring is connected between the functional cylinder (17) and the piston rod (18). The upper end of the functional cylinder (17) is connected to the suction tube (14), and the end of the functional cylinder (17) connected to the suction tube (14) is located between the first one-way valve (15) and the second one-way valve (16). The lower end of the suction tube (14) is located inside the lower end of the receiving ring (12), and there is a gap between the lower end face of the suction tube (14) and the inner bottom surface of the receiving ring (12).

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