A high-efficiency condensation device based on a molecular distillation apparatus

Abstract

This invention provides a high-efficiency condensation device based on a molecular distillation apparatus, belonging to the field of distillation technology. It includes a distillation tank body with a vacuum head connected through the top. In condensation mode, the control component optimizes the cold gas distribution through a rotating flow channel, creating a gradient temperature field with the spiral condenser tube. This avoids condensation disorder caused by excessive local temperature differences, allowing target components with different boiling points to condense in an orderly manner. Simultaneously, the spiral structure increases the heat exchange area, forming dual condensation with the circulating condensing medium in the storage device, significantly improving condensation efficiency. During distillation, the cleaning component is not idle; instead, a drive motor continuously rotates a large gear and a hollow rotating column via a small gear. This causes the arc-shaped polytetrafluoroethylene scraper at the bottom of the conical rotating cavity to continuously scrape the feed material against the inner wall of the distillation tank body, evenly spreading it into a thin liquid film, significantly increasing the vaporization area and reducing local overheating.

Description

Technical Field

[0001] This invention relates to the field of distillation technology, and in particular to a high-efficiency condensation device based on a molecular distillation apparatus. Background Technology

[0002] Molecular distillation, as a highly efficient separation technology carried out under high vacuum, is widely used in the purification process of heat-sensitive, high-boiling-point and high-value-added materials. Its core principle is to achieve separation by utilizing the difference in mean free path between the evaporation surface and the condensation surface of the material molecules. Therefore, the condensation efficiency and evaporation efficiency directly determine the performance and processing capacity of the entire device.

[0003] To increase the heat exchange area, some existing distillers have introduced threaded condenser tubes. However, the grooves and bends of these tubes have become a challenge for cleaning. In actual operation, high-boiling-point residues, coking products, or crystalline impurities easily adhere to the grooves and corners of the threads, forming a dense liquid film or solid deposit layer. These deposits have poor thermal conductivity, resulting in significant thermal resistance and causing the condensation efficiency to decrease rapidly over time. Currently, the mainstream cleaning method relies on manually disassembling the condenser tubes after shutdown and rinsing them with soaking, ultrasonic cleaning, or high-pressure water guns. This is not only time-consuming and labor-intensive, but also difficult to thoroughly remove dirt from the dead corners inside the threads. Even with a rotating nozzle, only surface wetting can be achieved, lacking the mechanical scraping ability for complex curved surfaces, making it difficult to eliminate the source of thermal resistance.

[0004] Furthermore, the condensation system of traditional vacuum scraped film distillation equipment mostly adopts a single-channel condenser tube design, where cold gas directly impacts the surface of the condenser tube to achieve heat exchange. This is difficult to adapt to the precise condensation requirements of different boiling point components in multi-component materials, resulting in premature condensation of high-boiling-point components and incomplete condensation of low-boiling-point components, which reduces the purity of product separation. Therefore, this application provides a high-efficiency condensation device based on a molecular distillation apparatus to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-efficiency condensation device based on a molecular distillation apparatus to solve the problem of cleaning dirt caused by the groove and bending structure of existing threaded condenser tubes, and the problem that a single-channel condensation design cannot achieve accurate separation of multi-boiling-point components.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A high-efficiency condensation device based on a molecular distillation apparatus includes a distillation tank body, a vacuum head being connected through the top of the distillation tank body, and a cleaning assembly, a collection assembly, a threaded condenser tube, and a control assembly being respectively provided inside the distillation tank body.

[0008] In condensation mode, the control component is separated from the cleaning component. The control component is introduced with condensing medium and optimizes the cold air distribution through the rotating flow channel, and constructs a gradient temperature field with the threaded condenser tube.

[0009] When switching to cleaning mode, the control component and the cleaning component are linked and coupled. While cutting off the cold air, the control component radially unfolds the elastic scraping structure to keep it in close contact with the outer wall of the threaded condenser tube. The cleaning component achieves fluid coverage on the wall surface through spraying and drives the control component to perform mechanical scraping on the threaded groove.

[0010] In addition, during the distillation process, the cleaning component simultaneously completes the raw material scraping and film forming.

[0011] Optionally, the cleaning assembly includes a hollow rotating column rotatably connected to the top of the distillation tank body. The top of the hollow rotating column is used to connect to an external cleaning liquid delivery device. The bottom of the hollow rotating column is connected to a conical rotating cavity, and a large gear is fixedly connected to one end of the hollow rotating column near the conical rotating cavity.

[0012] Optionally, a small gear is meshed with the outer edge of the large gear, and a drive motor is fixedly installed on the top of the main body of the distillation tank. The output end of the drive motor is fixedly connected to the inner wall of the small gear. A raw material inlet pipe and a raw material outlet pipe are respectively connected through the two sides of the main body of the distillation tank.

[0013] Optionally, an upper nozzle and a lower nozzle are respectively connected through the top and bottom surfaces of the large gear. The upper nozzle and the lower nozzle are installed in an oblique shape, with the output end of the upper nozzle facing the inner wall of the distillation tank body and the output end of the lower nozzle facing the threaded condenser tube.

[0014] Optionally, a rotating frame is fixedly connected to the bottom of the conical rotating cavity, and multiple scraping plates are installed in a circumferential array on the rotating frame. The scraping plates are made of polytetrafluoroethylene and are arc-shaped and adapted to the inner wall of the distillation tank body.

[0015] Optionally, the collecting assembly includes a collecting cavity fixedly connected to the center of the bottom of the distillation tank body. The collecting cavity has a hollow structure and an open top. A mounting frame and a base plate are fixedly connected from top to bottom inside the collecting cavity, and the center of the mounting frame and the base plate are connected through each other.

[0016] Optionally, the two ends of the threaded condenser are respectively connected to a condensing medium inlet pipe and a condensing medium outlet pipe, and the bottom end of the threaded condenser is located inside the collecting cavity. Both the condensing medium inlet pipe and the condensing medium outlet pipe are connected to an external liquid storage device.

[0017] Optionally, the control component includes a hydraulic lifting rod fixedly connected to the inside of the base plate, and a first motor is fixedly connected to the top of the hydraulic lifting rod, with the first motor located inside the collection cavity.

[0018] Optionally, the output end of the first motor is splined with a baffle plate, the bottom of the baffle plate is rotatably connected to a rotating base, and both sides of the top of the rotating base are fixedly connected with baffles, and a hollow cylinder with a notch is formed between the baffles and the rotating base.

[0019] Optionally, an inner cylinder is fixedly connected to one side of the top of the baffle, and an air inlet and an air outlet are respectively opened at the bottom of the inner cylinder. The top surface of the rotating base is provided with holes that are compatible with the air inlet and the air outlet. A cold air inlet pipe and a cold air outlet pipe are connected through the bottom of the rotating base, and the cold air inlet pipe and the cold air outlet pipe pass through the collecting cavity and are connected to the external gas storage device.

[0020] A support rod is fixedly connected to the other side of the top of the baffle. Telescopic components are fixedly connected to both sides of the support rod. Each telescopic component includes an outer rod connected to the support rod. A damping spring is fixedly connected inside the outer rod. An inner rod is fixedly connected to one end of the damping spring. A cleaning brush is fixedly connected to one end of the inner rod. The cleaning brush is made of heat-resistant and wear-resistant polytetrafluoroethylene. The baffle, inner cylinder, telescopic components, and cleaning brush are all located inside the cylinder formed by the rotating base and the baffle. The notch formed between the baffle and the rotating base is used for the extension of the cleaning brush.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] In the condensation mode of this invention, the control component optimizes the distribution of cold air through a rotating flow channel and constructs a gradient temperature field with the spiral condenser tube. This avoids the condensation disorder of components caused by excessive local temperature differences, allowing target components with different boiling points to condense in an orderly manner. At the same time, the spiral structure increases the heat exchange area and forms dual condensation with the condensing medium circulating in the liquid storage device, significantly improving the condensation efficiency.

[0023] During the distillation process, the cleaning components are not idle. Instead, the drive motor drives the large gear and the hollow rotating column to rotate continuously through the small gear. This causes the arc-shaped polytetrafluoroethylene scraper at the bottom of the conical rotating cavity to continuously scrape the feed material against the inner wall of the distillation tank, spreading it evenly into a thin liquid film. This significantly increases the vaporization area and reduces local overheating, thereby improving evaporation efficiency and product consistency. It is especially suitable for the stable treatment of high-viscosity or heat-sensitive materials.

[0024] When switching to cleaning mode, the hydraulic lifting rod pushes the first motor and baffle to rise, mechanically coupling the control component and the cleaning component. Subsequently, the first motor drives the baffle to rotate, causing the support rod and telescopic component to rotate synchronously. When the cleaning brush rotates to the notch between the baffle and the rotating base, the damping spring releases its elasticity, pushing the inner rod outward, allowing the PTFE cleaning brush to accurately pass through the notch and fit tightly against the outer wall of the threaded condenser tube, especially reaching deep into the threaded grooves and bends, areas that are difficult to reach with traditional cleaning. At the same time, the cleaning fluid is diverted to the upper and lower nozzles through the hollow rotating column. The upper nozzle sprays obliquely onto the inner wall of the distillation tank for full coverage rinsing, while the lower nozzle sprays directionally onto the surface of the condenser tube to soften the dirt. During the overall rotation, the cleaning brush mechanically scrapes the threaded grooves, and the scraper plate simultaneously assists in cleaning the inner wall of the tank. The combined action of fluid rinsing and mechanical scraping thoroughly removes residual liquid film, coke, or crystalline impurities, fundamentally preventing the formation of a thermal resistance layer and ensuring that the condenser tube maintains optimal heat exchange efficiency for a long time. Attached Figure Description

[0025] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0026] Figure 1 This is a three-dimensional structural diagram of a high-efficiency condensation device based on a molecular distillation apparatus;

[0027] Figure 2 A schematic diagram of the cleaning component assembly;

[0028] Figure 3 This is a schematic diagram of the cleaning components;

[0029] Figure 4 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0030] Figure 5 A schematic diagram of the collection components, threaded condenser tubes, and control components;

[0031] Figure 6 This is a cross-sectional view of the present invention;

[0032] Figure 7 This is a schematic diagram of the control component of the present invention;

[0033] Figure 8 This is a dynamic demonstration diagram of the cleaning brush of the present invention;

[0034] Figure 9 This is a perspective view of the control component of the present invention.

[0035] Figure label:

[0036] 100. Distillation tank body; 101. Raw material inlet pipe; 102. Raw material outlet pipe; 103. Vacuum head; 200. Cleaning assembly; 201. Hollow rotating column; 202. Conical rotating cavity; 203. Large gear; 2031. Small gear; 204. Upper nozzle; 205. Lower nozzle; 206. Scraper; 300. Drive motor;

[0037] 400. Collection component; 401. Collection chamber; 402. Mounting bracket; 403. Base plate; 500. Threaded condenser tube; 501. Condensate inlet pipe; 502. Condensate outlet pipe; 600. Control component; 601. Hydraulic lifting rod; 602. First motor; 603. Rotating base; 604. Baffle; 605. Baffle plate; 606. Inner cylinder; 607. Telescopic component; 608. Cleaning brush.

[0038] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0039] The following is a detailed description of a high-efficiency condensation device based on a molecular distillation apparatus provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0040] like Figures 1 to 9 As shown, an embodiment of the present invention provides a high-efficiency condensation device based on a molecular distillation apparatus, including a distillation tank body 100, a vacuum head 103 connected through the top of the distillation tank body 100, and a cleaning component 200, a collection component 400, a threaded condenser tube 500 and a control component 600 respectively provided inside the distillation tank body 100.

[0041] In condensation mode, the control component 600 is disconnected from the cleaning component 200. The control component 600 is introduced with condensing medium and the cold air distribution is optimized through the rotating flow channel, forming a gradient temperature field with the threaded condenser tube 500.

[0042] When switching to the cleaning mode, the control component 600 and the cleaning component 200 are linked and coupled. While cutting off the cold air, the control component 600 radially unfolds the elastic scraping structure and keeps it in close contact with the outer wall of the threaded condenser tube 500. The cleaning component 200 achieves fluid coverage on the wall surface through spraying and drives the control component 600 to perform mechanical scraping on the threaded groove.

[0043] In addition, during the distillation process, the cleaning component 200 simultaneously completes the raw material scraping and forming.

[0044] Therefore, the analysis is based on the above content:

[0045] When the condensation operation is started, the control component 600 and the cleaning component 200 are in a separated state. The condensing medium is introduced into the control component 600 and, with its own rotation, the cold air is orderly introduced into the internal flow channel. The cold air does not directly impact the spiral condenser tube 500, but forms a temperature gradient field from the inside to the outside through the spatial arrangement between the control component 600 and the condenser tube. This gradient cooling method allows components with different volatile properties to condense in their respective suitable temperature ranges. This avoids the loss of low-boiling-point substances due to overcooling and prevents high-boiling-point components from lingering and decomposing in high-temperature areas. At the same time, it reduces localized sudden cooling and thermal stress concentration caused by direct cold air blowing and protects the structural integrity of the condenser tube.

[0046] When the equipment enters the maintenance stage, the control component 600 and the cleaning component 200 are mechanically connected. At this time, the cleaning component 200 drives the entire assembly to rotate. While expelling the residual cold air, it triggers the elastic cleaning structure inside the control component 600 to extend radially outward and closely fit the curved surface of the threaded condenser tube 500, including the threaded grooves and bends.

[0047] Meanwhile, as the cleaning component 200 rotates, it sprays cleaning fluid evenly onto the inner wall of the distillation tank body 100 and the outer wall of the threaded condenser tube 500 through its built-in nozzle, using fluid flushing to remove the attached substances; while the control component 600 rotates accordingly, and its extended elastic scraper performs synchronous mechanical scraping on the inner wall of the condenser tube to achieve deep cleaning, thoroughly remove residual liquid film, coke or crystallized impurities, and prevent the accumulation of thermal resistance.

[0048] In addition, at the initial stage of the distillation operation, the cleaning component 200 is not idle, but immediately switches to the film scraping function. Its rotation drives the film scraper 206 to continuously and evenly scrape the raw material liquid film on the inner wall of the distillation tank, promoting uniform heating and stable vaporization of the material, and improving evaporation efficiency and separation consistency.

[0049] As one implementation method in this embodiment, such as Figure 2 - Figure 5As shown, the cleaning assembly 200 includes a hollow rotating column 201 rotatably connected to the top of the distillation tank body 100. The top of the hollow rotating column 201 is used to connect to an external cleaning fluid delivery device. A conical rotating cavity 202 is connected through the bottom of the hollow rotating column 201. A large gear 203 is fixedly connected to one end of the hollow rotating column 201 near the conical rotating cavity 202. A small gear 2031 is meshed with the outer edge of the large gear 203. A drive motor 300 is also fixedly installed on the top of the distillation tank body 100. The output end of the drive motor 300 is fixedly connected to the inner wall of the small gear 2031. The two sides of the distillation tank body 100 are divided into... The raw material inlet pipe 101 and the raw material outlet pipe 102 are connected through the main body of the distillation tank 100. The top and bottom surfaces of the large gear 203 are respectively connected to the upper nozzle 204 and the lower nozzle 205. The upper nozzle 204 and the lower nozzle 205 are installed in an oblique shape. The output end of the upper nozzle 204 faces the inner wall of the distillation tank body 100, and the output end of the lower nozzle 205 faces the threaded condenser tube 500. The bottom of the conical rotating cavity 202 is fixedly connected to a rotating frame. Multiple scraper plates 206 are installed in a circumferential array on the rotating frame. The scraper plates 206 are made of polytetrafluoroethylene and are arc-shaped and adapted to the inner wall of the distillation tank body 100.

[0050] Therefore, the cleaning assembly 200 drives the small gear 2031 to rotate via the drive motor 300, which in turn meshes with and drives the large gear 203 and the hollow rotating column 201 fixed thereto to rotate synchronously. During the rotation, the hollow rotating column 201 guides the externally supplied cleaning liquid into its internal flow channel, and sprays it out directionally through the upper nozzle 204 and lower nozzle 205 installed obliquely on the top and bottom surfaces of the large gear 203, respectively. The upper nozzle 204 evenly covers the inner wall of the distillation tank body 100 with the cleaning liquid at an inclined angle, rinsing off the attached residue; while the lower nozzle 205 precisely sprays and wets the outer surface of the threaded condenser tube 500, softening the dirt.

[0051] Meanwhile, the conical rotating cavity 202 connected to the bottom of the hollow rotating column 201 rotates accordingly, causing the arc-shaped polytetrafluoroethylene scraper 206 on the rotating frame below to continuously rotate against the inner wall of the distillation tank. This not only evenly coats the raw material into a film during the distillation stage to promote efficient vaporization, but also assists in scraping away stubborn deposits on the inner wall during the cleaning stage. The polytetrafluoroethylene material ensures that the scraping process is damage-free, non-adhesive, and corrosion-resistant. The synergistic effect of the oblique spray layout and the rotating scraper achieves full coverage of the complex curved surfaces of the distillation chamber and condenser tubes through fluid flushing and mechanical cleaning, effectively preventing the accumulation of liquid film and the formation of thermal resistance, and ensuring the heat exchange efficiency and product purity of the equipment during long-term operation. In addition, at the initial stage of the distillation operation, the rotation of the cleaning component 200 drives the scraper 206 to continuously and evenly scrape the raw material liquid film on the inner wall of the distillation tank.

[0052] As one implementation method in this embodiment, such as Figure 5- Figure 7 As shown, the collecting assembly 400 includes a collecting cavity 401 fixedly connected to the center of the bottom of the distillation tank body 100. The collecting cavity 401 has a hollow structure and an open top. A mounting bracket 402 and a base plate 403 are fixedly connected from top to bottom inside the collecting cavity 401, with the mounting bracket 402 and the base plate 403 connected through each other at their centers. A threaded condenser tube 500 has a condensing medium inlet pipe 501 and a condensing medium outlet pipe 502 connected through each end, with the bottom end of the threaded condenser tube 500 located in the collecting cavity 401. Inside 01, both the condensing medium inlet pipe 501 and the condensing medium outlet pipe 502 are connected to an external liquid storage device. The liquid storage device includes a liquid pump, a cooling medium storage tank, and a refrigerator. The input end of the condensing medium inlet pipe 501 is connected to the output end of the liquid pump, the input end of the liquid pump is connected to the output end of the cooling medium storage tank, the input end of the cooling medium storage tank is connected to the output end of the refrigerator, and the input end of the refrigerator is connected to the output end of the condensing medium outlet pipe 502. Since the liquid storage device is existing technology, it will not be discussed further here.

[0053] Therefore, the bottom end of the threaded condenser 500 extends into the collection chamber 401 located at the center of the bottom of the main body of the distillation tank 100. The condensed distillate flows down its outer wall and drips directly into the collection chamber 401, entering the interior through the top opening, thus achieving efficient collection and isolation of high-purity products and avoiding backmixing or retention.

[0054] Meanwhile, the cooling medium forms a closed loop in the external liquid storage device: the cooler first cools down the heated medium discharged from the condensing medium output pipe 502, and the cooled medium flows into the cooling medium storage tank for temporary storage. Then, the liquid pump pressurizes and sends it into the condensing medium inlet pipe 501, and it flows back through the inside of the spiral condenser tube 500 to remove heat, completing a new round of heat exchange. This circulation path ensures that the cooling medium temperature is stable and the flow rate is controllable, so that the spiral condenser tube 500 can continuously maintain efficient condensation capacity. At the same time, the hollow opening structure and central guide design of the collecting cavity 401 effectively receive the condensate, preventing splashing or wall-mounted loss, and ensuring the product yield and the continuity of system operation.

[0055] As one implementation method in this embodiment, such as Figure 7 - Figure 9As shown, the control component 600 includes a hydraulic lifting rod 601 fixedly connected inside the base plate 403. A first motor 602 is fixedly connected to the top of the hydraulic lifting rod 601, and the first motor 602 is located inside the collection cavity 401. A baffle 605 is splinedly connected to the output end of the first motor 602. A rotating base 603 is rotatably connected to the bottom of the baffle 605. Baffles 604 are fixedly connected to both sides of the top of the rotating base 603, and a gap is formed between the baffles 604 and the rotating base 603. The hollow cylinder with notched groove has an inner cylinder 606 fixedly connected to one side of the top of the baffle 605. The bottom of the inner cylinder 606 is provided with an air inlet and an air outlet. The top surface of the rotating base 603 is provided with holes that match the air inlet and air outlet. The bottom of the rotating base 603 is connected to a cold air inlet pipe and a cold air outlet pipe. The cold air inlet pipe and the cold air outlet pipe pass through the collecting cavity 401 and connect to the external gas storage equipment. The equipment mainly includes a refrigeration unit, a buffer gas storage tank, a circulating fan, a gas-liquid separator, and a filter device. Its circulating gas supply principle is as follows: low-temperature gas (usually high-purity nitrogen) is cooled by the refrigeration unit, then sent to the rotating base 603 through the cold gas inlet pipe, and then flows into the control component 600 for indirect heat exchange to achieve gradient condensation. The gas that has absorbed heat is discharged from the cold gas outlet pipe, and after gas-liquid separation and filtration, it is sent back to the refrigeration unit for recooling by the circulating fan, thus forming a stable, clean, and energy-saving closed-loop gas supply cycle. A support rod is fixedly connected to the other side of the top of the baffle 605, and telescopic parts 607 are fixedly connected to both sides of the support rod. The telescopic component 607 includes an outer rod connected to the support rod. A damping spring is fixedly connected inside the outer rod. One end of the damping spring is fixedly connected to an inner rod. One end of the inner rod is fixedly connected to a cleaning brush 608. The cleaning brush 608 is made of heat-resistant and wear-resistant polytetrafluoroethylene. The baffle 605, inner cylinder 606, telescopic component 607, and cleaning brush 608 are all located inside the cylinder formed by the rotating base 603 and the baffle 604. The notch formed between the baffle 604 and the rotating base 603 is used for the extension of the cleaning brush 608.

[0056] Therefore, the control component 600 drives the first motor 602 and the upper baffle 605 to move vertically as a whole through the hydraulic lifting rod 601 inside the base plate 403, so as to dock or separate from the cleaning component 200. During the condensation operation, the baffle 605 is in a low position, the air inlet at the bottom of the inner cylinder 606 is aligned with the hole on the top of the rotating base 603, and the low temperature nitrogen flows into the rotating base 603 through the cold air inlet pipe, and then enters the inner cylinder 606 through the hole. It flows around in the closed cylinder formed by the baffle 604 and the rotating base 603, without directly impacting the threaded condenser tube 500. Instead, it forms a temperature gradient from the outside to the inside through indirect heat exchange, so that different boiling point components are condensed in layers in a suitable area, avoiding thermal stress damage or reduction in separation accuracy caused by local sudden cooling.

[0057] When switching to cleaning mode, the hydraulic lifting rod 601 pushes the baffle 605 upward, mechanically coupling the entire control assembly 600 with the cleaning assembly 200. Simultaneously, the first motor 602 drives the baffle 605 to rotate, causing the inner cylinder 606, support rod, and telescopic component 607 to rotate synchronously. When the cleaning brush 608 rotates to the notch between the baffle 604 and the rotating base 603, the damping spring releases its force, pushing the inner rod outward, allowing the PTFE cleaning brush 608 to pass through the notch and fit tightly against the threaded condenser tube 500. The outer wall, especially deep into the threaded grooves and bends, is mechanically scraped by the 608 cleaning brush during continuous rotation. Combined with the cleaning fluid sprayed by the 200 cleaning component, residual liquid film and crystalline impurities are thoroughly removed, preventing thermal resistance buildup. The PTFE material ensures abrasion-free, non-contaminating, and high-temperature resistant scraping process. The notch-groove structure opens only at specific angles, ensuring internal sealing during condensation and allowing for precise extension during cleaning. This allows for efficient completion of both gradient condensation and adaptive deep cleaning within a single mechanism. It is important to note that both the liquid and gas storage devices are equipped with independent one-way valves to control the inflow and outflow of the cooling medium.

[0058] It is worth noting that a pressure sensor is installed on the top of the main body 100 of the distillation tank to monitor the working vacuum in real time and prevent material decomposition or equipment leakage caused by abnormal pressure; a temperature sensor is installed on the condensing medium output pipe 502 of the threaded condenser 500 to monitor the condensing efficiency. Once the temperature fluctuation exceeds the limit, it indicates that the cooling has failed or that internal scaling has occurred.

[0059] The working principle of the technical solution provided by this invention is as follows:

[0060] This molecular distillation apparatus achieves seamless switching between distillation, condensation, and self-cleaning functions under different operating conditions through the precise coordination of the cleaning component 200, the regulating component 600, the threaded condenser 500, and the collection component 400. During operation, the raw material is injected into the main body 100 of the distillation tank through the raw material inlet pipe 101. The vacuum head 103 evacuates the tank to a high vacuum state. After the drive motor 300 starts, it drives the large gear 203 to rotate through the small gear 2031, which in turn drives the hollow rotating column 201 and the bottom conical rotating cavity 202 to rotate synchronously. The arc-shaped polytetrafluoroethylene scraping plate 206 installed on the rotating frame rotates continuously in close contact with the inner wall of the distillation tank, uniformly scraping the raw material into a thin liquid film to promote stable and efficient evaporation.

[0061] Meanwhile, the control component 600 is in a low position and is disconnected from the cleaning component 200. The hydraulic lifting rod 601 remains in a retracted state. The first motor 602 does not operate. The low-temperature cooling medium is circulated into the threaded condenser tube 500 through the external liquid storage device to maintain its constant temperature condensation capacity. The cold gas used to construct the gradient temperature field is provided by the external gas storage device. After being cooled by the refrigeration unit, the high-purity nitrogen passes through the cold gas inlet pipe, passes through the collection chamber 401, enters the bottom of the rotating base 603, and flows into the air inlet at the bottom of the inner cylinder 606 through the top hole. It flows around in the closed cylinder formed by the baffle 604 and the rotating base 603, indirectly cooling the outer wall of the threaded condenser tube 500, so that different boiling point components condense in their respective suitable areas, avoiding local sudden cooling or thermal stress damage caused by direct blowing. The condensed distillate flows down the outer wall of the threaded condenser tube 500, falls into the bottom collection chamber 401, enters through the top opening, and then exits through the outlet at the bottom of the collection chamber 401.

[0062] When a batch of distillation is completed and cleaning is required, the system switches to cleaning mode: First, the rotation of the first motor 602 drives the baffle 605 to rotate, so that the baffle 605 blocks the air inlet of the inner cylinder 606 and opens the air outlet, allowing the remaining gas to be output. At the same time, when the cleaning brush 608 rotates to the notch between the baffle 604 and the rotating base 603, the damping spring releases its elastic force, pushing the inner rod to extend outward, so that the polytetrafluoroethylene cleaning brush 608 passes through the notch and fits tightly against the outer wall of the threaded condenser tube 500, especially penetrating deep into the threaded groove and curved parts;

[0063] The hydraulic lifting rod 601 extends, pushing the first motor 602 and the upper baffle 605 to rise as a whole, so that the control component 600 and the cleaning component 200 are mechanically coupled. Then the drive motor 300 continues to run, driving the entire assembly to rotate. At the same time, the external cleaning fluid is introduced through the hollow rotating column 201 and sprayed out from the upper nozzle 204 and the lower nozzle 205 respectively. The upper nozzle 204 is directed towards the inner wall of the distillation tank to fully cover and rinse, while the lower nozzle 205 precisely sprays the surface of the threaded condenser tube 500 to wet the dirt. During the continuous rotation, the cleaning brush 608 mechanically scrapes the condenser tube, and the scraper plate 206 simultaneously scrapes off the residue on the inner wall of the tank, achieving a synergistic deep cleaning of fluid flushing and mechanical scraping, thoroughly removing liquid film and crystallized impurities, and preventing the formation of thermal resistance.

[0064] After cleaning, the hydraulic lifting rod 601 retracts, the cleaning brush 608 retracts, the notch is closed, and the system returns to its initial condensation state, ready for the next round of distillation.

[0065] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high efficiency condensing device based on a molecular still, characterized in that, Including distillation tank body (100), the top of the distillation tank body (100) is connected with the vacuum head (103) through, the inside of the distillation tank body (100) is equipped with cleaning assembly (200), collection assembly (400), screw condenser (500) and control assembly (600) respectively; In condensing mode, the control assembly (600) is separated from the cleaning assembly (200), the control assembly (600) is connected with the condensing medium and the rotating flow channel is optimized, and the gradient temperature field is constructed with the screw condenser (500); When switching to cleaning mode, the control assembly (600) is coupled with the cleaning assembly (200), the control assembly (600) is cut off while the elastic cleaning structure is radially expanded, and the screw condenser (500) is closely attached to the outer wall, the cleaning assembly (200) is realized by spraying, and the wall surface is covered, and the control assembly (600) is driven to perform mechanical scraping on the screw groove; In addition, during the distillation process, the cleaning assembly (200) synchronously completes the film formation of raw materials; The collection assembly (400) includes an aggregation cavity (401) fixedly connected to the bottom center of the distillation tank body (100), and the inside of the aggregation cavity (401) is fixedly connected with a mounting frame (402) and a bottom plate (403) from top to bottom; The control assembly (600) includes a hydraulic lifting rod (601) fixedly connected to the inside of the bottom plate (403), the top of the hydraulic lifting rod (601) is fixedly connected with a first motor (602), and the first motor (602) is located in the inside of the aggregation cavity (401); The output end of the first motor (602) is spline-connected with a baffle (605), the bottom of the baffle (605) is rotatably connected with a rotating base (603), the top of the rotating base (603) is fixedly connected with a baffle (604) on both sides, and the baffle (604) and the rotating base (603) form a hollow cylinder with a notch groove; One side of the top of the baffle (605) is fixedly connected with an inner cylinder (606), the bottom of the inner cylinder (606) is respectively provided with an air inlet and an air outlet, the top surface of the rotating base (603) is provided with a hole matching the air inlet and the air outlet, and the bottom of the rotating base (603) is connected with a cold gas inlet pipe and a cold gas outlet pipe, and the cold gas inlet pipe and the cold gas outlet pipe penetrate the aggregation cavity (401) and communicate to the external gas storage equipment; The other side of the top of the baffle (605) is fixedly connected with a support rod, both sides of the support rod are fixedly connected with telescopic pieces (607), the telescopic piece (607) comprises an outer rod connected with the support rod, a damping spring is fixedly connected inside the outer rod, one end of the damping spring is fixedly connected with an inner rod, one end of the inner rod is fixedly connected with a cleaning brush (608), and the material of the cleaning brush (608) is polytetrafluoroethylene resistant to temperature and wear, the baffle (605), the inner cylinder (606), the telescopic piece (607) and the cleaning brush (608) are located inside the cylinder formed by the rotating base (603) and the baffle (604), and the gap formed between the baffle (604) and the rotating base (603) is used for the extension of the cleaning brush (608).

2. The high efficiency condensing apparatus based on a molecular still according to claim 1, characterized in that, The cleaning assembly (200) comprises a hollow rotating column (201) rotatably connected to the top of the distillation tank body (100), the top end of the hollow rotating column (201) is used for connecting an external cleaning liquid conveying device, the bottom end of the hollow rotating column (201) is throughly connected with a conical rotating cavity (202), and one end of the hollow rotating column (201) close to the conical rotating cavity (202) is fixedly connected with a large gear (203).

3. The high efficiency condensing apparatus based on a molecular still according to claim 2, characterized in that, The outer edge of the large gear (203) is meshedly connected with a small gear (2031), the top of the distillation tank body (100) is also fixedly installed with a driving motor (300), and the output end of the driving motor (300) is fixedly connected to the inner wall of the small gear (2031). The two sides of the distillation tank body (100) are throughly connected with a raw material inlet pipe (101) and a raw material outlet pipe (102) respectively.

4. The high efficiency condensing apparatus based on a molecular still of claim 2, wherein, The two sides of the top surface and the bottom surface of the large gear (203) are throughly connected with an upper spray head (204) and a lower spray head (205) respectively, the upper spray head (204) and the lower spray head (205) are installed in an oblique line shape, the output end of the upper spray head (204) faces the inner wall of the distillation tank body (100), and the output end of the lower spray head (205) faces the threaded condensing pipe (500).

5. The high efficiency condensing apparatus based on a molecular still of claim 2, wherein, The bottom of the conical rotating cavity (202) is fixedly connected with a rotating frame, a plurality of membrane scraping plates (206) are circumferentially installed on the rotating frame, and the material of the membrane scraping plate (206) is polytetrafluoroethylene, the membrane scraping plate (206) is in an arc shape and is matched with the inner wall of the distillation tank body (100).

6. The high efficiency condensing apparatus based on a molecular still of claim 1, wherein, The gathering cavity (401) is a hollow structure, and the top is open, and the center parts of the mounting frame (402) and the bottom plate (403) are throughly connected.

7. The high efficiency condensing apparatus based on a molecular still of claim 1, wherein, The two ends of the threaded condensing pipe (500) are throughly connected with a condensing medium inlet pipe (501) and a condensing medium outlet pipe (502) respectively, the bottom end of the threaded condensing pipe (500) is located inside the gathering cavity (401), and the condensing medium inlet pipe (501) and the condensing medium outlet pipe (502) are both communicated to an external liquid storage device.

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