A dynamic buffer heat exchanger and method of use thereof

Abstract

The application discloses a dynamic buffering heat exchanger and a use method thereof. The heat exchanger integrates a heat exchange cylinder, a buffering mechanism, an anti-blocking mechanism, an environment sensing system and a control system. The buffering mechanism drives spiral leaves to stir ethylene glycol solution and liquid carbon dioxide by a rotating motor, greatly reduces buffering hysteresis, guarantees stable cooling of raw material liquid, releases liquid carbon dioxide, improves the contact area of liquid carbon dioxide and ethylene glycol solution, and prevents the blocking mechanism from using a servo motor to drive a cleaning frame to efficiently remove grease-like ethylene glycol on the filter, effectively avoiding filter blockage and ensuring smooth carbon dioxide gas discharge. The environment sensing system accurately monitors temperature and liquid level, and the control system dynamically controls accordingly. The application solves the bottleneck of traditional technology, significantly improves the production quality and efficiency of raw materials, and effectively promotes the development of the industry.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat exchangers, and particularly relates to a dynamic buffering type heat exchanger and a use method thereof. BACKGROUND

[0002] In the production process of bulk drugs, efficient and stable cooling treatment of bulk drug liquid is a key link to ensure drug quality. The traditional heat exchanger often uses low-temperature medium to directly contact with the bulk liquid for heat exchange. This direct heat exchange method can cause the temperature of the bulk liquid to drop sharply, which seriously affects the molecular structure and chemical stability of the liquid drug, and thus reduces the drug quality and production qualification rate. To alleviate the problem of temperature drop, the existing technology attempts to introduce ethylene glycol as a buffer agent, which is mixed with liquid carbon dioxide to form an intermediate heat exchange medium to indirectly cool the bulk drug liquid. However, this scheme has exposed many technical defects in practical application:

[0003] First, the buffer hysteresis problem is significant. The heat capacity characteristics of ethylene glycol determine that its temperature change response to liquid carbon dioxide has a time delay. When the low-temperature liquid carbon dioxide rapidly flows into the heat exchanger, the ethylene glycol cannot absorb heat in time, causing the end of the coil to still suffer from instantaneous low-temperature impact, which further affects the physical and chemical properties of the bulk liquid. Secondly, the temperature gradient is not uniform. The distribution and flow state of ethylene glycol in the heat exchanger are difficult to control, and its buffering effect can cause uneven temperature distribution in the heat exchanger, resulting in local overcooling or overheating. This not only affects the stability of the bulk liquid cooling process, but also may cause side reactions of the bulk liquid due to temperature fluctuations, causing irreversible damage to the drug quality.

[0004] Secondly, the filter clogging risk is prominent. During the carbon dioxide gas sublimation discharge process, the ethylene glycol particles carried need to be separated and recovered through the filter. However, the filler in the filter will gradually accumulate a large amount of impurities during the long-term filtration of ethylene glycol, causing the gas discharge resistance to increase continuously. This not only reduces the discharge efficiency of carbon dioxide gas, but also requires frequent maintenance or replacement of the filter, which seriously affects the continuity of the production system. SUMMARY

[0005] To address the problems and shortcomings of existing technologies, this invention provides a dynamic buffer heat exchanger and its application method, specifically designed for the cooling of active pharmaceutical ingredient (API) solutions in the production process of metformin API. It aims to overcome many challenges in existing technologies, providing solid technical support for ensuring drug quality. It fundamentally solves a series of key problems restricting the quality and efficiency of API production, such as sudden temperature drops in the API solution, uneven temperature gradients, and filter clogging. Through innovative design, it creates a high-performance dynamic buffer heat exchanger and its scientifically sound application method, significantly improving the quality and efficiency of API production and injecting new vitality into the industry.

[0006] This invention is achieved through the following technical solution:

[0007] A dynamic buffer heat exchanger, characterized in that it includes a heat exchange cylinder, a buffer mechanism, an anti-clogging mechanism, an environmental sensing system, and a control system;

[0008] The heat exchanger is equipped with several coils inside. One side of the heat exchanger is equipped with a liquid inlet hood, and the other side is equipped with a liquid outlet hood.

[0009] The buffer mechanism includes a rotary motor located at the liquid inlet hood, a rotating rod installed at the output end of the rotary motor, and a spiral blade installed at the rotating rod. The rotary motor drives the spiral blade to rotate through the rotating rod to stir the ethylene glycol solution and liquid carbon dioxide solution in the heat exchange cylinder. The buffer mechanism also includes a liquid outlet tank located at the bottom of the heat exchange cylinder, a multi-port pipe connected to the liquid outlet tank, and a flow valve installed at the liquid inlet end of the multi-port pipe. The top of the liquid outlet tank is provided with an arc-shaped connecting plate that matches the bottom wall of the heat exchange cylinder. Several equally spaced drainage holes are opened on the arc-shaped connecting plate.

[0010] By using a rotary motor to drive a spiral blade to stir the ethylene glycol solution and liquid carbon dioxide, the rapid and uniform mixing of the two media is greatly promoted, effectively compensating for the buffering hysteresis of ethylene glycol. Taking the production of metformin raw material solution as an example, under traditional methods, due to buffering hysteresis, the temperature fluctuation range of the raw material solution at the end of the coil can reach 8-10℃. However, with the buffering mechanism of this invention, the temperature fluctuation range can be reduced to 2-3℃, making the cooling process of the raw material solution more stable and uniform, and effectively protecting the molecular structure and chemical stability of the drug. At the same time, the coordinated design of the outlet tank, multi-port pipe, flow valve, arc-shaped connecting plate, and drain hole can effectively disperse the impact force of liquid carbon dioxide, preventing it from directly impacting the coil, further improving the reliability and stability of the raw material solution cooling process.

[0011] The anti-blocking mechanism comprises an exhaust pipe located at the top of the heat exchange cylinder, a plurality of filter sheets fixed in the exhaust pipe, an annular receiving tray located below each filter sheet, a cleaning frame located on both sides of each filter sheet, a connecting rod connecting each cleaning frame, and a servo motor driving the rotation of the connecting rod. The servo motor drives the rotation of the cleaning frame to clean the grease-like ethylene glycol attached to the filter sheet to the annular receiving tray. The outer side of the exhaust pipe is provided with a transparent material collecting box communicating with the discharge port of the annular receiving tray. The servo motor drives the rotation of the cleaning frame, which can timely and efficiently remove the grease-like ethylene glycol on the filter sheet, ensuring that the filter sheet always maintains good filtering performance and avoiding the problem of poor carbon dioxide gas emission caused by filter blockage. Compared with the traditional filter, the frequency of filter blockage is reduced by 80%-90% after using the anti-blocking mechanism of the application, greatly improving the continuity and stability of the production system.

[0012] The environmental perception system can detect the internal temperature and liquid level of the heat exchanger;

[0013] The control system is in control connection with the rotating motor, the flow valve, the servo motor and the environmental perception system. The environmental perception system monitors the temperature and liquid level in the heat exchanger in real time and accurately. The control system intelligently and dynamically adjusts each execution component according to these data, so that the heat exchanger can automatically adjust the operating parameters according to different production conditions and raw material liquid characteristics, and always maintain the best working state, effectively improving the production efficiency and the consistency of product quality.

[0014] Further, the filter sheet is conical, and the upper surface and the lower surface of the filter sheet gradually decrease in height from the center to the periphery, so that the grease-like ethylene glycol attached to the filter sheet has a tendency to flow to the annular receiving tray. The unique upper surface and lower surface structure design of the conical filter sheet enables the grease-like ethylene glycol attached to the filter sheet to naturally and quickly flow to the annular receiving tray under the action of gravity and surface tension. This design greatly improves the cleaning efficiency, reduces the accumulation time of impurities on the filter sheet, further ensures the normal work of the filter sheet, and ensures the smoothness of carbon dioxide gas emission. In actual operation, compared with the flat filter sheet, the cleaning time is shortened by 30%-40% after using the conical filter sheet, improving the work efficiency.

[0015] Further, the transparent material collecting box is connected with the heat exchanger through a connecting pipeline, and a switch valve is arranged on the connecting pipeline. The connecting pipeline and the switch valve between the transparent material collecting box and the heat exchanger realize the recycling and secondary utilization of ethylene glycol. This not only reduces the waste of raw materials and reduces production costs, but also meets the green and environmental production concept. Taking a month of production cycle as an example, through the recycling of ethylene glycol, the raw material cost can be saved by 10%-15%, which has significant economic and environmental benefits.

[0016] Further, the outer surface of the liquid inlet cover and the outer surface of the liquid outlet cover are fixedly connected with electronic thermometers, the detection ends of the two electronic thermometers respectively penetrate into the interiors of the liquid inlet cover and the liquid outlet cover, and the electronic thermometers are in data connection with the control system. The electronic thermometers on the outer surfaces of the liquid inlet cover and the liquid outlet cover can monitor the temperature of the raw material liquid when entering and exiting the coil in real time and accurately, providing key data support for the control system. According to the temperature data, the control system can accurately adjust the injection amount of liquid carbon dioxide, ensure that the raw material liquid is cooled according to the set cooling curve, effectively improve the accuracy and stability of the cooling process, and further ensure the quality of the medicine.

[0017] Further, the outer surface of the heat exchange cylinder is fixedly connected with an electronic liquid level meter, the detection end of the electronic liquid level meter penetrates into the interior of the heat exchange cylinder, and the electronic liquid level meter is in data connection with the control system. The electronic liquid level meter on the outer surface of the heat exchange cylinder can monitor the liquid level of the ethylene glycol solution in real time, and the control system adjusts the flow valve in time according to the liquid level data to maintain the ethylene glycol liquid surface constant at 40%-60% of the height of the coil. This accurate liquid level control can ensure that the heat exchanger is always in the best working state, improve the heat exchange efficiency and stability, and avoid the problem of poor heat exchange effect caused by too high or too low liquid level.

[0018] Further, the outer surface of the heat exchanger is fixedly connected with two mounting brackets, the bottom surfaces of the two mounting brackets are each provided with two mounting through holes, and the mounting brackets and the mounting through holes on the outer surface of the heat exchanger are designed to facilitate the installation and fixation of the equipment and ensure the stability of the equipment during operation.

[0019] The heat exchange cylinder and the liquid inlet cover are connected through two mutually cooperating connecting flanges, and the two connecting flanges are fixedly connected through a plurality of fastening bolts; the heat exchange cylinder and the liquid outlet cover are connected through two mutually cooperating connecting flanges, and the two connecting flanges are fixedly connected through a plurality of fastening bolts; the design of the connecting flanges and the fastening bolts facilitates the disassembly and maintenance of the equipment and reduces the difficulty and workload of maintenance.

[0020] The outer surface of the liquid inlet cover is fixedly connected with a liquid inlet pipe, and the outer surface of the liquid outlet cover is fixedly connected with a liquid outlet pipe. The provision of the liquid inlet pipe and the liquid outlet pipe makes the entry and exit of the raw material liquid more smooth and convenient, improving the production efficiency.

[0021] Further, the inner wall of the heat exchange cylinder is fixedly connected with two fixed discs, the outer surface of each coil is fixedly connected with the inner wall of the fixed disc, and each coil penetrates to the outside of the fixed disc.

[0022] The inner wall of the inner ring of the two first sealing bearings is fixedly connected with the outer surface of the rotating rod, the inner wall of the inner ring of the second sealing bearing is fixedly embedded in the inner wall of the liquid inlet cover, and the inner wall of the inner ring of the second sealing bearing is fixedly connected with the outer surface of the rotating rod. The design of the fixed disc, the first sealing bearing and the second sealing bearing on the inner wall of the heat exchange cylinder provides stable and reliable support and sealing for the coil pipe and the rotating rod, ensuring the safety and stability of the equipment during operation. The fixed disc can effectively fix the position of the coil pipe and prevent the coil pipe from shifting or shaking under the impact of liquid flow; the sealing bearing can ensure smooth rotation of the rotating rod and prevent liquid leakage, thereby prolonging the service life of the equipment.

[0023] Further, the bottom surface of the rotating motor is fixedly connected with a positioning seat, and the right side surface of the positioning seat is fixedly connected with the outer surface of the liquid inlet cover.

[0024] The right side surface of the servo motor is fixedly connected with a stable seat, and the bottom surface of the stable seat is fixedly connected with the upper surface of the exhaust pipe. The design of the positioning seat of the rotating motor and the stable seat of the servo motor enhances the stability of the motor during operation and reduces the adverse effects of motor vibration on the equipment.

[0025] The outer surface of the exhaust pipe is fixedly connected with a butt joint pipe, and the outer surface of the butt joint pipe is fixedly connected with a butt joint flange. The design of the butt joint pipe and the butt joint flange of the exhaust pipe facilitates the connection with the carbon dioxide gas collection equipment and improves the efficiency of gas recovery.

[0026] Further, the filter disc is provided with three filter discs, and the filter discs are aligned in the vertical direction. In the vertical upward direction, the filter hole diameter of the filter disc gradually decreases. The design of the three filter discs aligned in the vertical direction and the filter hole diameter gradually decreasing can filter the carbon dioxide gas in multiple layers and efficiently. From bottom to top, the filter hole diameter gradually decreases, which can filter out impurities of different particle sizes in turn, effectively improve the filtering effect, prolong the service life of the filter disc, and ensure the purity of the carbon dioxide gas emission.

[0027] A dynamic buffering heat exchanger use method, comprising the following steps:

[0028] S1, first, the rotating motor, the flow valve, the electronic thermometer, the electronic liquid level meter and the servo motor are connected with the external power supply and the control system, and the space formed by the heat exchange cylinder and the fixed disc is filled with an appropriate amount of ethylene glycol solution. When the raw material liquid that needs to be cooled by heat exchange enters the liquid inlet cover through the liquid inlet pipe, the raw material medicine enters from the left end of the coil pipe, then passes through the coil pipe and is discharged from the right end of the coil pipe into the liquid discharge cover and is discharged outward through the liquid discharge pipe;

[0029] S2: In the process of raw material liquid flowing through the coil, liquid carbon dioxide can be sent into the liquid outlet tank from the multi-way pipe through the flow valve, the impact force of the liquid carbon dioxide is preliminarily reduced by the multiple outlets of the multi-way pipe, and then mixed with the ethylene glycol solution in the heat exchange cylinder through the dispersion of the arc-shaped connecting plate and the liquid discharge hole, which can further prevent the liquid carbon dioxide from directly contacting the coil, reduce the instantaneous impact of the liquid carbon dioxide on the raw material liquid in the coil, and make the cooling process of the raw material liquid more uniform and reliable;

[0030] S3: After the liquid carbon dioxide enters the heat exchange cylinder, the rotating motor cooperates with the positioning seat, the first sealing bearing and the second sealing bearing to drive the rotating rod and the spiral blade to rotate, the ethylene glycol solution and the liquid carbon dioxide in the heat exchange cylinder are stirred through the rotation of the spiral blade, the mixing speed of the ethylene glycol solution and the liquid carbon dioxide is improved, and then the ethylene glycol is used as an intermediate medium to exchange heat with the raw material liquid in the coil, which can make the cooling process of the raw material liquid in the coil more gentle and safe, and the heat exchanger is more safe and reliable when exchanging heat with the raw material liquid, and the problem of sudden temperature drop of the raw material liquid affecting the quality of the liquid medicine is avoided;

[0031] S4: Two electronic thermometers can monitor the temperature of the raw material liquid in the liquid inlet cover and the liquid outlet cover at the same time, the injection amount of the liquid carbon dioxide can be adjusted according to the temperature difference between the inlet and outlet of the coil, the temperature PID control system in the external controller and the flow valve, so that the set cooling curve is maintained, and then the liquid level in the heat exchange cylinder is monitored by the electronic liquid level meter; When the liquid level is too high, the electronic liquid level meter controls the flow valve to reduce the input amount of the liquid carbon dioxide, and when the liquid level is too low, the electronic liquid level meter controls the flow valve to increase the input amount of the liquid carbon dioxide, so as to maintain the ethylene glycol liquid level constant at 40%-60% of the height of the coil;

[0032] S5: When the heat exchange of the liquid carbon dioxide in the heat exchange cylinder is completed, and the liquid carbon dioxide sublimates into gaseous carbon dioxide as the temperature rises, the gaseous carbon dioxide can be discharged into the carbon dioxide gas collection device through the exhaust pipe and the connecting pipe, so as to be used again, and when the carbon dioxide gas passes through the three filter sheets with gradually decreasing hole diameters from bottom to top, the carbon dioxide gas can be filtered in multiple layers to prevent the ethylene glycol particles and other impurities carried by the carbon dioxide gas from being discharged;

[0033] S6: The connecting rod is driven to rotate by the servo motor, which can drive the cleaning frame to rotate, and then the three filter plates at the bottom can be scraped off the oil-like ethylene glycol impurities filtered out, and then fall into the annular material receiving disc, and then flow into the transparent material collecting box from the discharge port; the lower filter plate upper surface receives the impurities falling from the upper filter plate, and the two cleaning frames are also rotated, and the corresponding discharge port is pushed into the transparent material collecting box by the cleaning frame, so that the filter plate always remains relatively clean, prevents the filter plate from being excessively blocked to affect the carbon dioxide gas discharge efficiency, prevents ethylene glycol from being discharged outward, further improves the safety of the heat exchanger for raw material heat exchange and cooling, ensures the smoothness and continuity of the carbon dioxide gas discharge, and does not need to be frequently maintained and replaced, and as the ethylene glycol in the transparent material collecting box accumulates, the maintenance personnel can open the switch valve to reflow the accumulated ethylene glycol in the transparent material collecting box to the treatment equipment inside the heat exchange cylinder for secondary utilization.

[0034] The beneficial effects of the present application are:

[0035] Firstly, the present application can alleviate the temperature drop phenomenon by filling ethylene glycol solution as a buffer in the heat exchange cylinder, prevent the low-temperature carbon dioxide liquid from directly contacting the coil, and utilize the multi-way pipe to cooperate with the liquid outlet tank, so that the impact force of the liquid carbon dioxide can be preliminarily reduced by the multiple outlets of the multi-way pipe during the process of the liquid carbon dioxide entering the heat exchange cylinder through the flow valve, and then the ethylene glycol in the heat exchange cylinder can be further prevented from directly contacting the coil by the dispersion cooperation of the arc-shaped connecting plate and the liquid discharge hole, so that the instantaneous impact of the liquid carbon dioxide on the raw material liquid in the coil is reduced, the cooling process of the raw material liquid is more uniform and reliable, and the power provided by the rotating motor can drive the helical blade to rotate through the rotating rod, so that the mixing speed between the ethylene glycol and the liquid carbon dioxide in the heat exchange cylinder is faster, so that the cooling process of the raw material medicine in the coil is more gentle and safe, and the heat exchanger is more safe and reliable when heat exchanging and cooling the raw material medicine, and the problem of temperature drop of the raw material medicine affecting the quality of the liquid medicine is avoided.

[0036] Second, the present application is provided by setting the anti-blocking mechanism, carbon dioxide gas can be excluded outside the process of exhaust pipe, using three different filter density filter sheet for carbon dioxide gas filtration, prevent the ethylene glycol particles carried in the carbon dioxide gas and other impurities to the outside, and through the servo motor drive connecting rod rotation, can drive the cleaning frame to rotate, and then through the cleaning frame can be scraped three filter bottom filter down the impurities, and make it fall in the annular receiving tray, and then from the discharge port into the transparent material box inside, while the two filter on the upper surface of the impurities are also through the rotation of the cleaning frame, through the discharge port into the transparent material box inside, so that the filter always keep relatively clean, prevent filter from excessive blockage affect the carbon dioxide gas emission efficiency, to prevent ethylene glycol to the outside, further improve the heat exchanger on the raw material heat exchange cooling safety, at the same time ensure the carbon dioxide gas emission smoothness and continuity, without frequent maintenance and replacement effect. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the three-dimensional structure schematic diagram of the heat exchange cylinder and mounting frame of the present application;

[0038] Figure 2 It is the three-dimensional structure schematic diagram of the heat exchange cylinder of the present application;

[0039] Figure 3 It is the three-dimensional structure schematic diagram of the liquid inlet cover and liquid outlet cover of the present application;

[0040] Figure 4 It is the three-dimensional structure schematic diagram of the liquid outlet tank of the present application;

[0041] Figure 5 It is the three-dimensional structure schematic diagram of the rotating rod and spiral frame of the present application;

[0042] Figure 6 It is the three-dimensional structure schematic diagram of the exhaust pipe and transparent material box of the present application;

[0043] Figure 7 It is the three-dimensional structure schematic diagram of the filter screen and receiving frame of the present application after unfolding.

[0044] Component and drawing mark list:

[0045] 1, heat exchange cylinder; 2, buffer mechanism; 201, coil; 202, liquid inlet cover; 203, liquid outlet cover; 204, rotary motor; 205, rotating rod; 206, spiral blade; 207, liquid outlet tank; 208, multi-way pipe; 209, flow valve; 210, arc-shaped connecting plate; 211, liquid outlet hole; 212, electronic thermometer; 213, electronic liquid level meter; 3, anti-blocking mechanism; 301, exhaust pipe; 302, filter sheet; 303, connecting rod; 304, servo motor; 305, annular material receiving disc; 306, cleaning frame; 307, transparent material collecting box; 308, discharge port; 309, on-off valve; 4, mounting bracket; 5, mounting through hole; 6, connecting flange; 7, fastening bolt; 8, liquid inlet pipe; 9, liquid outlet pipe; 10, positioning seat; 11, fixing disc; 12, first sealing bearing; 13, second sealing bearing; 14, stabilizing seat; 15, butt joint pipe; 16, butt joint flange. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0047] It should be noted that the left, right, up, down, front, back and other orientation terms in the embodiments of the present application are only relative concepts or are with reference to the normal use state of the product, i.e. the reference of the running direction of the product, and should not be considered as having limitations.

[0048] In addition, it should also be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present application not only include positional changes, but also include motions in which the position does not change relatively, but the state changes, such as rotation and rolling.

[0049] Finally, it should be noted that when a component is referred to as "located" or "disposed" on another component, it can be on the other component or can exist with a centering component at the same time. When a component is referred to as "connected to" another component, it can be directly connected to the other component or can exist with a centering component at the same time.

[0050] Embodiment one

[0051] Please refer to Figures 1-7 , including heat exchange cylinder 1, the lower part of heat exchange cylinder 1 is provided with buffer mechanism 2, and the upper part of heat exchange cylinder 1 is provided with anti-blocking mechanism 3.

[0052] The buffer mechanism 2 comprises a plurality of coil pipes 201, each of which is arranged in the heat exchange cylinder 1, the heat exchange cylinder 1 is provided with a liquid inlet cover 202 and a liquid outlet cover 203 on the two sides respectively, the left side of the liquid inlet cover 202 is provided with a rotary motor 204, the heat exchange cylinder 1 is rotationally connected with a rotating rod 205, the left end of the rotating rod 205 penetrates through the liquid inlet cover 202 and is fixedly connected with the output end of the rotary motor 204, the outer surface of the rotating rod 205 is fixedly connected with a spiral blade 206, the lower surface of the outer surface of the heat exchange cylinder 1 is fixedly connected with a liquid outlet tank 207, the bottom surface of the liquid outlet tank 207 is fixedly connected with two multi-way pipes 208, the lower surface of the liquid outlet tank 207 is provided with a flow valve 209, the liquid inlet ends of the two multi-way pipes 208 are fixedly connected with the output end of the flow valve 209, the inner wall of the liquid outlet tank 207 is fixedly connected with an arc-shaped connecting plate 210, the upper surface of the arc-shaped connecting plate 210 is provided with a plurality of liquid outlet holes 211 arranged at equal distances, the outer surface of the liquid inlet cover 202 and the outer surface of the liquid outlet cover 203 are fixedly connected with electronic thermometers 212, the detection ends of the two electronic thermometers 212 penetrate into the interiors of the liquid inlet cover 202 and the liquid outlet cover 203 respectively, the outer surface of the heat exchange cylinder 1 is fixedly connected with an electronic liquid level meter 213, the detection end of the electronic liquid level meter 213 penetrates into the interior of the heat exchange cylinder 1, the two electronic thermometers 212 and the electronic liquid level meter 213 are electrically connected with the flow valve 209 through wires, by arranging the buffer mechanism 2, the temperature sudden drop phenomenon can be relieved by filling ethylene glycol as a buffer agent in the interior of the heat exchange cylinder 1, the liquid carbon dioxide at low temperature is prevented from directly contacting the coil pipes 201, the impact force of the liquid carbon dioxide is preliminarily reduced by the multiple outlets of the multi-way pipes 208, then the ethylene glycol in the interior of the heat exchange cylinder 1 is further dispersed by the arc-shaped connecting plate 210 and the liquid outlet holes 211, the liquid carbon dioxide is prevented from directly contacting the coil pipes 201, the instantaneous impact of the liquid carbon dioxide on the raw material liquid in the interiors of the coil pipes 201 is reduced, and the ethylene glycol in the interior of the heat exchange cylinder 1 is rotated by the rotary motor 204 and the rotating rod 205 to drive the spiral blade 206, so that the mixing speed between the ethylene glycol and the liquid carbon dioxide is faster, thereby making the cooling process of the raw material in the interiors of the coil pipes 201 more gentle and safe.

[0053] The outer surface of the heat exchange cylinder 1 is fixedly connected with two mounting racks 4, the bottom surfaces of the two mounting racks 4 are provided with two mounting through holes 5, the mounting rack 4 cooperates with the mounting through hole 5 and a fixing member such as a bolt to fix the device at a position required by work, thereby increasing the mounting firmness during installation and use.

[0054] The heat exchange cylinder 1 and the liquid inlet cover 202 are connected through two matched connecting flanges 6, and the two connecting flanges 6 are fixedly connected through a plurality of fastening bolts 7; the heat exchange cylinder 1 and the liquid outlet cover 203 are connected through two matched connecting flanges 6, and the two connecting flanges 6 are fixedly connected through a plurality of fastening bolts 7. Through the cooperation of the connecting flanges 6 and the fastening bolts 7, the assembly tightness and convenience of the liquid inlet cover 202 and the heat exchange cylinder 1 and the liquid outlet cover 203 and the heat exchange cylinder 1 can be ensured.

[0055] The outer surface of the liquid inlet cover 202 is fixedly connected with a liquid inlet pipe 8, and the outer surface of the liquid outlet cover 203 is fixedly connected with a liquid outlet pipe 9. The liquid inlet pipe 8 can be connected with the output pipeline of the raw medicine, so as to ensure that the raw medicine needing heat exchange and cooling can smoothly enter the heat exchange cylinder 1 for heat exchange. The liquid outlet pipe 9 can allow the raw medicine in the heat exchange cylinder 1 to be cooled and heat-exchanged to be discharged outward.

[0056] The bottom surface of the rotating motor 204 is fixedly connected with a positioning seat 10, and the right side surface of the positioning seat 10 is fixedly connected with the outer surface of the liquid inlet cover 202. The positioning seat 10 can position the position of the rotating motor 204, thereby increasing the use stability of the rotating motor 204.

[0057] The inner wall of the heat exchange cylinder 1 is fixedly connected with two fixed discs 11, the outer surface of each coil pipe 201 is fixedly connected with the inner wall of the fixed disc 11, and each coil pipe 201 penetrates to the outside of the fixed disc 11. The fixed disc 11 can not only form a relatively closed space in the heat exchange cylinder 1, so that the ethylene glycol can be smoothly filled in the heat exchange cylinder 1 without contacting the raw medicine in the coil pipe 201, but also can limit the position of the coil pipe 201, thereby increasing the use reliability of the coil pipe 201.

[0058] The first sealing bearing 12 is fixedly embedded in the inner part of the two fixed discs 11, the inner wall of the inner ring of the two first sealing bearings 12 is fixedly connected with the outer surface of the rotating rod 205, the second sealing bearing 13 is fixedly embedded in the inner wall of the liquid inlet cover 202, and the inner wall of the inner ring of the second sealing bearing 13 is fixedly connected with the outer surface of the rotating rod 205. The first sealing bearing 12 and the second sealing bearing 13 can seal the gap between the fixed disc 11 and the liquid inlet cover 202 and the rotating rod 205 without affecting the rotation of the rotating rod 205, thereby preventing the ethylene glycol in the heat exchange cylinder 1 from leaking outward through the gap.

[0059] The specific implementation of the embodiment is: first, the rotary motor 204, the flow valve 209, the electronic thermometer 212 and the electronic liquid level meter 213 are connected with the external power supply and the controller, and the space formed by the heat exchange cylinder 1 and the fixed disc 11 is filled with a proper amount of ethylene glycol. When the raw material medicine that needs to be cooled by heat exchange enters the liquid inlet cover 202 through the liquid inlet pipe 8, the raw material medicine enters from the left end of the coil pipe 201, then passes through the coil pipe 201, and is discharged from the right end of the coil pipe 201 into the liquid outlet cover 203 and then is discharged outward through the liquid outlet pipe 9. In the process of the raw material medicine flowing through the coil pipe 201, the flow valve 209 can send liquid carbon dioxide from the multi-way pipe 208 into the liquid outlet tank 207, and the multiple outlets of the multi-way pipe 208 can preliminarily reduce the impact force of the liquid carbon dioxide. Then, the liquid carbon dioxide is dispersed and matched with the ethylene glycol in the heat exchange cylinder 1 through the arc-shaped connecting plate 210 and the liquid outlet hole 211, which can further prevent the liquid carbon dioxide from directly contacting the coil pipe 201, reduce the instantaneous impact of the liquid carbon dioxide on the raw material liquid in the coil pipe 201, and make the cooling process of the raw material liquid more uniform and reliable. After the liquid carbon dioxide enters the heat exchange cylinder 1, the rotary motor 204 cooperates with the positioning seat 10, the first sealing bearing 12 and the second sealing bearing 13 to drive the rotating rod 205 and the spiral blade 206 to rotate. Through the rotation of the spiral blade 206, the ethylene glycol and the liquid carbon dioxide in the heat exchange cylinder 1 can be stirred, the mixing speed of the ethylene glycol and the liquid carbon dioxide can be improved, and then the ethylene glycol can be used as an intermediate medium to exchange heat with the raw material medicine in the coil pipe 201, so that the cooling process of the raw material medicine in the coil pipe 201 is more gentle and safe, and the heat exchanger is more safe and reliable when cooling the raw material medicine. The temperature of the raw material medicine in the liquid inlet cover 202 and the liquid outlet cover 203 can be monitored by the two electronic thermometers 212 at the same time. At this time, the injection amount of the liquid carbon dioxide can be adjusted according to the inlet and outlet temperature difference of the coil pipe 201, the temperature-PID control system in the external controller and the flow valve 209, so that the cooling curve is maintained. The liquid level in the heat exchange cylinder 1 can be monitored by the electronic liquid level meter 213. When the liquid level is too high, the electronic liquid level meter 213 controls the flow valve 209 to reduce the input amount of the liquid carbon dioxide. When the liquid level is too low, the electronic liquid level meter 213 controls the flow valve 209 to increase the input amount of the liquid carbon dioxide, so as to maintain the liquid level of the ethylene glycol at 40%-60% of the height of the coil pipe 201.

[0060] Embodiment two

[0061] Please refer to Figures 1-7The anti-blocking mechanism 3 comprises an exhaust pipe 301, the bottom end of the exhaust pipe 301 penetrates into the inside of the heat exchange cylinder 1, the inner wall of the exhaust pipe 301 is fixedly connected with three filter sheets 302, the inside of the three filter sheets 302 is jointly rotatably connected with a connecting rod 303, the upper surface of the exhaust pipe 301 is fixedly connected with a servo motor 304, the output end of the servo motor 304 penetrates through the exhaust pipe 301 and is fixedly communicated with the top end of the connecting rod 303, the lower side of each filter sheet 302 is provided with an annular material receiving disc 305, the outer surface of each annular material receiving disc 305 is fixedly connected with the inner wall of the exhaust pipe 301, the outer surface of the connecting rod 303 is fixedly connected with a plurality of cleaning frames 306, each cleaning frame 306 is in contact with the filter sheet 302, the outer surface of the exhaust pipe 301 is fixedly communicated with a transparent material collecting box 307, the outer surface of the exhaust pipe 301 is provided with a plurality of discharge ports 308, each discharge port 308 penetrates into the inside of the transparent material collecting box 307, the bottom surface of the transparent material collecting box 307 is fixedly communicated with an on-off valve 309, the bottom end of the on-off valve 309 penetrates into the inside of the heat exchange cylinder 1, the carbon dioxide gas is filtered by the three filter sheets 302 with different filtering densities, the ethylene glycol particles and other impurities carried in the carbon dioxide gas are prevented from being discharged outward, and meanwhile, the filter sheet 302 can also be prevented from being excessively blocked to affect the carbon dioxide gas discharge efficiency.

[0062] The right side surface of the servo motor 304 is fixedly connected with a stable seat 14, the bottom surface of the stable seat 14 is fixedly connected with the upper surface of the exhaust pipe 301, the stable seat 14 can increase the stability of the servo motor 304, so that the servo motor 304 can smoothly drive the connecting rod 303 to rotate.

[0063] The outer surface of the exhaust pipe 301 is fixedly communicated with a butt joint pipe 15, the outer surface of the butt joint pipe 15 is fixedly connected with a butt joint flange 16, the butt joint pipe 15 cooperates with the butt joint flange 16 and a bolt and the like fixing member, so as to communicate the exhaust pipe 301 with the carbon dioxide gas recovery equipment, prevents the carbon dioxide gas from being directly discharged outward to cause pollution and waste, and facilitates the secondary utilization of the carbon dioxide gas.

[0064] The specific implementation of the embodiment is: when the heat exchange of the liquid carbon dioxide in the heat exchange cylinder 1 is completed and the liquid carbon dioxide sublimates into gaseous carbon dioxide as the temperature rises, the gaseous carbon dioxide can be discharged into a carbon dioxide gas collecting device through the exhaust pipe 301 and the docking pipe 15, so as to prevent pollution and waste caused by direct discharge of the carbon dioxide gas, facilitate secondary utilization of the carbon dioxide gas, and when the carbon dioxide gas passes through the three filter sheets 302 with gradually decreasing hole diameters from bottom to top, the carbon dioxide gas can be filtered in multiple layers, so as to prevent other impurities such as ethylene glycol particles carried in the carbon dioxide gas from being discharged outward, and the cleaning frame 306 can be driven to rotate by the servo motor 304 driving the connecting rod 303 to rotate, so as to scrape off the impurities filtered at the bottom of the three filter sheets 302 and make the impurities fall into the annular material receiving disc 305, and then flow into the transparent material collecting box 307 from the discharge port 308, and the impurities falling from the upper filter sheet 302 are also pushed into the transparent material collecting box 307 by the two cleaning frames 306 through the discharge port 308 which is flush with the upper surfaces of the two lower filter sheets 302, so that the filter sheets 302 always remain relatively clean, so as to prevent the filter sheets 302 from being excessively blocked to affect the carbon dioxide gas discharge efficiency, prevent ethylene glycol from being discharged outward, further improve the heat exchanger heat exchange and cooling safety of the raw material medicine, ensure the smoothness and continuity of the carbon dioxide gas discharge, and achieve the effect of not needing frequent maintenance and replacement, and as the ethylene glycol in the transparent material collecting box 307 accumulates, the maintenance personnel can open the switch valve 309 to make the accumulated ethylene glycol in the transparent material collecting box 307 flow downward into the heat exchange cylinder 1 again for secondary utilization.

[0065] A dynamic buffering type heat exchanger use method, specifically comprising the following steps:

[0066] S1: first, the rotating motor 204, the flow valve 209, the electronic thermometer 212, the electronic liquid level meter 213 and the servo motor 304 are connected with the external power supply and the controller, and the space formed by the heat exchange cylinder 1 and the fixed disc 11 is filled with an appropriate amount of ethylene glycol, when the raw material medicine needing heat exchange and cooling enters the liquid inlet pipe 8 into the liquid inlet cover 202, the raw material medicine enters from the left end of the coil pipe 201, then passes through the coil pipe 201 and is discharged from the right end of the coil pipe 201 into the liquid outlet cover 203 and is discharged outward through the liquid outlet pipe 9;

[0067] S2: In the process of raw material liquid flowing through the coil 201, the liquid carbon dioxide can be sent into the inside of the liquid outlet tank 207 from the multi-way pipe 208 through the flow valve 209, the impact force of the liquid carbon dioxide is preliminarily reduced by the multiple outlets of the multi-way pipe 208, and then the liquid carbon dioxide can further prevent direct contact with the coil 201 by dispersing the ethylene glycol in the inside of the heat exchange cylinder 1 through the arc-shaped connecting plate 210 and the drainage hole 211, reducing the instantaneous impact of the liquid carbon dioxide on the raw material liquid in the inside of the coil 201, and making the cooling process of the raw material liquid more uniform and reliable;

[0068] S3: After the liquid carbon dioxide enters the inside of the heat exchange cylinder 1, the rotating rod 205 and the spiral blade 206 can be driven to rotate by the rotating motor 204 cooperating with the positioning seat 10, the first sealing bearing 12 and the second sealing bearing 13, the ethylene glycol and the liquid carbon dioxide in the inside of the heat exchange cylinder 1 can be stirred by the rotation of the spiral blade 206, the mixing speed of the ethylene glycol and the liquid carbon dioxide is improved, and then the heat exchange of the ethylene glycol as an intermediate medium on the raw material medicine in the inside of the coil 201 can make the cooling process of the raw material medicine in the inside of the coil 201 more gentle and safe, so that the heat exchanger is more safe and reliable when performing heat exchange and cooling of the raw material medicine, and the problem of sudden temperature drop of the raw material medicine affecting the quality of the liquid medicine does not occur;

[0069] S4: Then two electronic thermometers 212 can be used to monitor the temperature of the raw material medicine in the inside of the liquid inlet cover 202 and the liquid outlet cover 203 at the same time, at this time, the injection amount of the liquid carbon dioxide can be adjusted by the temperature PID control system in the external controller and the flow valve 209 according to the inlet and outlet temperature difference of the coil 201, so as to maintain the set cooling curve, and then the liquid level in the inside of the heat exchange cylinder 1 can be monitored by the electronic liquid level meter 213, when the liquid level is too high, the electronic liquid level meter 213 controls the flow valve 209 to reduce the input amount of the liquid carbon dioxide, and when the liquid level is too low, the electronic liquid level meter 213 controls the flow valve 209 to increase the input amount of the liquid carbon dioxide, so as to maintain the ethylene glycol liquid level constant at 40%-60% of the height of the coil 201;

[0070] S5: When the heat exchange of the liquid carbon dioxide in the inside of the heat exchange cylinder 1 is completed and sublimates into gaseous state with the increase of the temperature, the gaseous carbon dioxide can be discharged into the carbon dioxide gas collecting equipment through the exhaust pipe 301 and the butt joint pipe 15, so as to prevent the direct discharge of the carbon dioxide gas from causing pollution and waste, facilitate the secondary utilization of the carbon dioxide gas, and prevent the ethylene glycol particles and other impurities carried in the carbon dioxide gas from being discharged outside through the three filter sheets 302 with gradually decreasing hole diameters from bottom to top;

[0071] S6: And through the servo motor 304 drive connecting rod 303 rotation, can drive cleaning frame 306 rotation, and then through the cleaning frame 306 can scrape off three filter sheet 302 bottom filter down the impurities, and make it fall in the annular material receiving disc 305, then from the discharge port 308 into the transparent material box 307 inside, while the two filter sheet 302 upper surface on the filter sheet 302 falling impurities are also through two cleaning frame 306 rotation, through the discharge port 308 with the two filter sheet 302 upper surface flat is pushed into the transparent material box 307 inside cleaning frame 306, so that the filter sheet 302 always keep relatively clean, prevent filter sheet 302 excessive blockage influence carbon dioxide gas emission efficiency, to prevent the ethylene glycol emission, further improve the heat exchanger on the raw material heat exchange cooling safety, at the same time ensure the carbon dioxide gas emission smoothness and continuity, without frequent maintenance and replacement effect, with the accumulation of ethylene glycol in the transparent material box 307 inside, maintenance personnel can open the switch valve 309 to flow into the transparent material box 307 inside the accumulated ethylene glycol again to the heat exchange cylinder 1 inside secondary utilization.

[0072] The working principle of the present application is that: in use, first, the rotary motor 204, the flow valve 209, the electronic thermometer 212, the electronic liquid level meter 213 and the servo motor 304 are connected with the external power supply and the controller, when the raw material medicine that needs to be cooled passes through the liquid inlet pipe 8 into the liquid inlet cover 202, the raw material medicine enters from the left end of the coil pipe 201, then passes through the coil pipe 201 and is discharged from the right end of the coil pipe 201 into the liquid outlet cover 203 and is discharged outward through the liquid outlet pipe 9, in the process of the raw material medicine flowing through the coil pipe 201, the liquid carbon dioxide is sent into the liquid outlet tank 207 inside from the multi-way pipe 208 through the flow valve 209, the impact force of the liquid carbon dioxide is preliminarily reduced by using the multiple outlets of the multi-way pipe 208, then the ethylene glycol inside the heat exchange cylinder 1 is further dispersed and matched by the arc-shaped connecting plate 210 and the liquid outlet hole 211, which can further prevent the liquid carbon dioxide from directly contacting the coil pipe 201, reduce the instantaneous impact of the liquid carbon dioxide on the raw material liquid inside the coil pipe 201, make the cooling process of the raw material liquid more uniform and reliable, and after the liquid carbon dioxide enters the inside of the heat exchange cylinder 1, the rotary motor 204 cooperates with the positioning seat 10, the first sealing bearing 12 and the second sealing bearing 13 to drive the rotating rod 205 and the spiral blade 206 to rotate, the ethylene glycol and the liquid carbon dioxide inside the heat exchange cylinder 1 are stirred by the rotation of the spiral blade 206, the mixing speed of the ethylene glycol and the liquid carbon dioxide is improved, then the ethylene glycol is used as an intermediate medium to exchange heat with the raw material medicine inside the coil pipe 201, which can make the cooling process of the raw material medicine inside the coil pipe 201 more gentle and safe, make the heat exchanger more safe and reliable when exchanging heat with the raw material medicine, and avoid the problem that the temperature of the raw material medicine drops suddenly and affects the quality of the liquid medicine, then the two electronic thermometers 212 can monitor the temperature of the raw material medicine inside the liquid inlet cover 202 and the liquid outlet cover 203 at the same time, at this time, the temperature difference between the inlet and outlet of the coil pipe 201 is dynamically adjusted, the temperature-PID control system in the external controller and the flow valve 209 are used to adjust the injection amount of the liquid carbon dioxide, so that the set cooling curve is maintained, then the electronic liquid level meter 213 can monitor the liquid level inside the heat exchange cylinder 1, when the liquid level is too high, the electronic liquid level meter 213 controls the flow valve 209 to reduce the input amount of the liquid carbon dioxide, and when the liquid level is too low, the electronic liquid level meter 213 controls the flow valve 209 to increase the input amount of the liquid carbon dioxide, so that the ethylene glycol liquid level is maintained at 40%-60% of the height of the coil pipe 201;

[0073] When the heat exchange cylinder 1 inside the liquid carbon dioxide heat exchange is completed, and with the increase of temperature, sublimate into gaseous, can be discharged through the exhaust pipe 301 and butt joint pipe 15 into the carbon dioxide gas collection equipment, prevent carbon dioxide gas directly to the outside of the discharge caused by pollution and waste, facilitate the secondary use of carbon dioxide gas, when the carbon dioxide gas through the exhaust pipe 301, through three from bottom to top aperture gradually reducing the filter piece 302, can be multi layer filtering of carbon dioxide gas, prevent carbon dioxide gas carrying ethylene glycol particles and other impurities to the outside of the discharge, and through the servo motor 304 drive connecting rod 303 rotation, can drive cleaning frame 306 rotation, and then through the cleaning frame 306 can scrape off three filter piece 302 bottom filter down the impurities, and make it fall in the annular material receiving tray 305, then from the discharge port 308 into the transparent material collecting box 307 inside, while the two filter piece 302 upper surface of the above two filter piece 302 falling impurities are also through the rotation of two cleaning frame 306, through the discharge port 308 with the two filter piece 302 upper surface of the same level is pushed into the transparent material collecting box 307 inside by cleaning frame 306, so that the filter piece 302 always keep relatively clean, prevent filter piece 302 excessive blockage influence carbon dioxide gas emission efficiency, to prevent ethylene glycol emission, further improve the heat exchanger of raw material heat exchange cooling safety, at the same time ensure the carbon dioxide gas emission smoothness and continuity, without frequent maintenance and replacement effect, with the accumulation of ethylene glycol in the transparent material collecting box 307, maintenance personnel can open the switch valve 309 to flow into the heat exchange cylinder 1 inside the transparent material collecting box 307 inside the accumulation of ethylene glycol again secondary use.

[0074] The above only for the embodiment of this application, and not for limiting this application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. A dynamic buffer heat exchanger, characterized in that, It includes a heat exchanger, a buffer mechanism, an anti-clogging mechanism, an environmental sensing system, and a control system; The heat exchange cylinder is equipped with several coils inside. One side of the heat exchange cylinder is provided with a liquid inlet hood, and the other side is provided with a liquid outlet hood. The buffer mechanism includes a rotary motor located at the liquid inlet hood, a rotating rod installed at the output end of the rotary motor, and a spiral blade installed at the rotating rod. The rotary motor drives the spiral blade to rotate through the rotating rod to stir the ethylene glycol solution and liquid carbon dioxide solution in the heat exchange cylinder. The buffer mechanism also includes a liquid outlet tank located at the bottom of the heat exchange cylinder, a multi-port pipe connecting the liquid outlet tank, and a flow valve installed at the liquid inlet end of the multi-port pipe. The top of the liquid outlet tank is provided with an arc-shaped connecting plate that matches the bottom wall of the heat exchange cylinder. The arc-shaped connecting plate has several equally spaced drainage holes. The anti-clogging mechanism includes an exhaust pipe located at the top of the heat exchange cylinder, multiple filter plates fixed inside the exhaust pipe, an annular receiving tray located below each filter plate, cleaning racks located on both sides of each filter plate, connecting rods connecting each cleaning rack, and a servo motor that drives the connecting rods to rotate. The servo motor drives the cleaning racks to rotate to clean the grease-like ethylene glycol adhering to the filter plates into the annular receiving tray. A transparent collection box connected to the discharge port of the annular receiving tray is provided on the outside of the exhaust pipe. The environmental sensing system can detect the internal temperature and liquid level of the heat exchanger; The control system is connected to the rotary motor, the flow valve, the servo motor, and the environmental sensing system.

2. The dynamic buffer heat exchanger according to claim 1, characterized in that, The filter is conical, and the height of both the upper and lower surfaces of the filter gradually decreases from the center to the surrounding area, so that the oily ethylene glycol adhering to the filter tends to flow towards the annular receiving tray.

3. A dynamic buffer heat exchanger according to claim 1, characterized in that, The transparent collection box is connected to the heat exchanger by a connecting pipe, and a switch valve is provided on the connecting pipe.

4. A dynamic buffer heat exchanger according to claim 1, characterized in that, Electronic thermometers are fixedly connected to the outer surfaces of the liquid inlet hood and the liquid outlet hood, respectively. The detection ends of the two electronic thermometers extend into the interior of the liquid inlet hood and the interior of the liquid outlet hood, respectively. The electronic thermometers are connected to the control system for data transmission.

5. A dynamic buffer heat exchanger according to claim 4, characterized in that, An electronic level gauge is fixedly connected to the outer surface of the heat exchange cylinder. The detection end of the electronic level gauge extends into the interior of the heat exchange cylinder, and the electronic level gauge is connected to the control system.

6. A dynamic buffer heat exchanger according to claim 5, characterized in that, Two mounting brackets are fixedly connected to the outer surface of the heat exchanger, and two mounting through holes are opened on the bottom surface of each mounting bracket; The heat exchange cylinder and the liquid inlet hood are connected by two mating connecting flanges, and the two connecting flanges are fixedly connected by several fastening bolts. The heat exchange cylinder and the drain hood are connected by two mating connecting flanges, and the two connecting flanges are fixedly connected by several fastening bolts. The outer surface of the liquid inlet hood is fixedly connected to a liquid inlet pipe, and the outer surface of the liquid outlet hood is fixedly connected to a liquid outlet pipe.

7. A dynamic buffer heat exchanger according to claim 6, characterized in that, The inner wall of the heat exchange cylinder is fixedly connected to two fixed discs, and the outer surface of each disc is fixedly connected to the inner wall of the fixed disc, and each disc extends to the outside of the fixed disc. Both of the fixed disks have a first sealed bearing fixedly embedded inside, and the inner wall of the inner ring of each of the two first sealed bearings is fixedly connected to the outer surface of the rotating rod. The inner wall of the liquid inlet cover has a second sealed bearing fixedly embedded inside, and the inner wall of the inner ring of the second sealed bearing is fixedly connected to the outer surface of the rotating rod.

8. A dynamic buffer heat exchanger according to claim 1, characterized in that, A positioning seat is fixedly connected to the bottom surface of the rotary motor, and the right side of the positioning seat is fixedly connected to the outer surface of the liquid inlet hood. A stabilizing base is fixedly connected to the right side of the servo motor, and the bottom surface of the stabilizing base is fixedly connected to the upper surface of the exhaust pipe. The outer surface of the exhaust pipe is fixedly connected to a connecting pipe, and the outer surface of the connecting pipe is fixedly connected to a mating flange.

9. A dynamic buffer heat exchanger according to claim 7, characterized in that, The filter has three elements, and each element is aligned with the others in the vertical direction. The pore size of the filter gradually decreases in the vertically upward direction.

10. A method of using a dynamic buffer heat exchanger, applied to the heat exchanger as described in claim 9, characterized in that, Includes the following steps: S1. First, connect the rotary motor, flow valve, electronic thermometer, electronic level gauge and servo motor to the external power supply and control system, and fill the space formed by the heat exchange cylinder and the fixed plate with an appropriate amount of ethylene glycol solution. When the raw material liquid that needs to be heated and cooled enters the inlet hood through the inlet pipe, the raw material will enter from the left end of the coil, and then be discharged from the right end of the coil into the drain hood and discharged outward through the drain pipe. S2: During the flow of the raw material through the coil, the flow valve can send liquid carbon dioxide from the multi-port pipe into the liquid outlet tank. The multiple outlets of the multi-port pipe initially reduce the impact force of the liquid carbon dioxide. Then, after being dispersed by the arc-shaped connecting plate and the drain hole, it mixes with the ethylene glycol solution inside the heat exchange cylinder. This further prevents the liquid carbon dioxide from directly contacting the coil, reduces the instantaneous impact of the liquid carbon dioxide on the raw material liquid inside the coil, and makes the cooling process of the raw material liquid more uniform and reliable. S3: After liquid carbon dioxide enters the heat exchange cylinder, the rotary motor, in conjunction with the positioning seat, the first sealed bearing, and the second sealed bearing, drives the rotating rod and the spiral blade to rotate. The rotation of the spiral blade agitates the ethylene glycol solution and liquid carbon dioxide inside the heat exchange cylinder, increasing the mixing speed of the ethylene glycol solution and liquid carbon dioxide. Then, by using ethylene glycol as an intermediate medium, heat exchange is carried out on the raw material inside the coil. This makes the cooling process of the raw material inside the coil smoother and safer, making the heat exchanger safer and more reliable when cooling the raw material. It will not cause a sudden drop in the temperature of the raw material, which would affect the quality of the liquid medicine. S4: Two electronic thermometers can simultaneously monitor the temperature of the raw materials inside the inlet and outlet hoods. Based on the dynamic temperature difference between the coil inlet and outlet, the injection rate of liquid carbon dioxide can be adjusted in conjunction with the external controller's PID temperature control system and flow valve to maintain the set cooling curve. The electronic level gauge monitors the liquid level inside the heat exchanger. When the liquid level is too high, the electronic level gauge controls the flow valve to reduce the liquid carbon dioxide input; when the liquid level is too low, the electronic level gauge controls the flow valve to increase the liquid carbon dioxide input, maintaining the ethylene glycol level constant at 40%-60% of the coil height. S5: After the liquid carbon dioxide inside the heat exchange cylinder completes heat exchange and sublimates into a gaseous state as the temperature rises, it can be discharged into the carbon dioxide gas collection device through the exhaust pipe and connecting pipe for secondary utilization of carbon dioxide gas. When carbon dioxide gas passes through the exhaust pipe, it passes through three filter plates with gradually decreasing apertures from bottom to top, which can perform multi-layer filtration of carbon dioxide gas to prevent ethylene glycol particles carried in carbon dioxide gas from being discharged outward. S6: The servo motor drives the connecting rod to rotate, which in turn drives the cleaning frame to rotate. The cleaning frame scrapes away the greasiness-like ethylene glycol impurities filtered from the bottom of the three filter plates, causing them to fall into the annular receiving tray and then flow into the transparent collection box through the discharge port. The upper surface of the lower filter plate receives the impurities falling from the upper filter plate. Similarly, through the rotation of the two cleaning frames, the impurities are pushed into the transparent collection box through the corresponding discharge ports, keeping the filter plates relatively clean and preventing excessive clogging that could affect the carbon dioxide emission efficiency. This prevents ethylene glycol from being emitted, further improving the safety of heat exchanger for raw material cooling, while ensuring smooth and continuous carbon dioxide emission without the need for frequent maintenance and replacement. As ethylene glycol accumulates inside the transparent collection box, maintenance personnel can open the switch valve to allow the accumulated ethylene glycol to flow back down into the heat exchange cylinder for secondary use.

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