Medical material extraction machine

Abstract

The application discloses a medical material extraction machine, which comprises a frame, an outer cylinder arranged in the frame, a special inner cylinder arranged on the outer cylinder, a damping device arranged in the frame, a driving motor arranged in the frame, an evaporation fan arranged in the frame, an air heater arranged in the frame, a liquid pump arranged on the frame, a pipeline device arranged on the liquid pump, a rotating shaft arranged on the outer cylinder, a door body arranged on the frame and an exhaust valve arranged on the outer cylinder. The application relates to the medical material extraction machine, which has the characteristics of being suitable for the preparation of hemostatic gauze and scald gauze textile materials and being used for the cleaning replacement and evaporation of fibrous sodium alginate and integrating the functions of cleaning, extraction and evaporation.

Description

Technical Field

[0001] This invention belongs to the field of sodium alginate fiber production technology, specifically a medical material extraction machine. Background Technology

[0002] Sodium alginate, also known as sodium alginate, kelp gum, alginic acid, or alginate, is a natural polysaccharide carbohydrate extracted from kelp. It is widely used in food, textiles, printing and dyeing, and papermaking products as a thickener, emulsifier, stabilizer, adhesive, and sizing agent. Since the 1980s, sodium alginate has seen new applications in the food industry. Sodium alginate is not only a safe food additive but can also serve as a base material for biomimetic or therapeutic foods. Because it is essentially a natural cellulose, it can slow the absorption of fats, sugars, and bile salts, thus lowering serum cholesterol, triglycerides, and blood sugar.

[0003] Sodium alginate is a natural polysaccharide carbohydrate extracted from kelp. It has the effects of lowering blood lipids, blood sugar, and cholesterol, and is currently mainly used in pharmaceuticals and health foods. Sodium alginate is also a good dental impression material and facial mask shaping agent, and is gradually being applied in the cosmetics industry. Sodium alginate is a highly viscous polymer compound. Unlike starch and cellulose, it has a carboxyl group, making it a high-molecular-weight uronic acid formed by the aldehyde group of β-D-mannuronic acid via a glycosidic bond. Its functional properties are as follows: it is highly hydrophilic, dissolving in both cold and warm water to form a very viscous, homogeneous solution; the resulting true solution possesses a softness difficult to obtain with other analogues. However, the current spraying equipment has some problems: In the traditional process, the cleaning and replacement of stretched sodium alginate fibers uses an open-type storage tank as the main body for cleaning and replacement. First, 70% ethanol is mixed with pure water and injected into the tank. Sodium alginate fibers are added according to the weight ratio, along with a certain weight of acetic acid. The mixture is allowed to stand for 2 hours, and then the waste liquid is discharged and evaporated for recovery. This process is mainly to remove impurities. Then, ethanol of the same concentration is injected again, and after reacting for 2 hours, the reaction solution is stored for the initial reaction of the next batch of sodium alginate fibers. This process is repeated once more. After draining the liquid, samples are taken, evaporated, and dispersed, and then tested to see if the requirements are met. If not, the original reaction solution is injected again for reaction until the test is qualified. Finally, 99% ethanol is used for reaction for 2 hours. After draining the liquid, the sodium alginate fibers are placed in a centrifuge for high-speed spin drying. Then, the spin-dried fibers are manually spread flat in a tunnel evaporator and manually removed from the other end of the evaporator for subsequent processes. At the average replacement rate, the reaction time for 15 kg of sodium alginate fibers is 2 days, which is very inefficient. In traditional preparation processes, the entire reaction of sodium alginate fiber takes place in an open environment. Prolonged exposure to high concentrations of ethanol gas can damage the nervous system of operators, potentially leading to decreased intelligence, memory loss, or liver disease, and can also cause skin irritation. The washing, replacement, drying, evaporation, and collection processes of sodium alginate fiber all require manual operation. The possibility of combustion and explosion of high-concentration ethanol gas during this process is ever-present, posing significant dangers to both personnel and the workplace. Furthermore, the recovery and recycling of the ethanol liquid also requires manual intervention, demanding a high level of professional knowledge from operators and involving substantial labor intensity. Therefore, there is a need to design a medical material extraction machine. Summary of the Invention:

[0004] The purpose of this invention is to provide a medical material extraction machine to solve the above-mentioned problems, thereby resolving the issues mentioned in the background art.

[0005] To address the above problems, this invention provides a technical solution for a medical material extraction machine:

[0006] A medical material extraction machine includes a frame, an outer cylinder inside the frame, a dedicated inner cylinder on the outer cylinder, a shock-absorbing device inside the frame, a drive motor inside the frame, an evaporation fan inside the frame, an air heater inside the frame, a liquid pump on the frame, a pipeline device on the liquid pump, a rotating shaft on the outer cylinder, a door on the frame, and an exhaust valve on the outer cylinder.

[0007] Preferably, the pipeline system includes a No. 1 tank, a No. 2 tank, a No. 3 tank, a No. 4 tank, an inlet valve, an outlet valve, an outlet valve for the No. 1 tank, an outlet valve for the No. 2 tank, an outlet valve for the No. 3 tank, an outlet valve for the No. 4 tank, a high-point liquid level, and a low-point liquid level. The No. 1 tank is equipped with an outlet valve for the No. 1 tank and an inlet valve for the No. 1 tank. The No. 2 tank is equipped with an outlet valve for the No. 2 tank and an inlet valve for the No. 2 tank. The No. 3 tank is equipped with an outlet valve for the No. 3 tank and an inlet valve for the No. 3 tank. The No. 4 tank is equipped with an outlet valve for the No. 4 tank and an inlet valve for the No. 4 tank. The control principle of the pipeline system is as follows: Under the control of the PLC control unit, the initial state of the four tanks should be met first. Tank 1 should be empty; the remaining tanks should reach the high liquid level and the low liquid level should be closed. Otherwise, the PLC control unit should alarm and indicate "low liquid level fault". The low liquid level positions of tanks 2, 3, and 4 should be sufficient to extract the amount of ethanol in one operation. As usage and consumption occur, the high liquid level of the three tanks will gradually become undetectable. However, as long as the low liquid level can be detected, no alarm is needed; only the status of the liquid level switch should be displayed on the PLC control unit screen. When the low liquid level of any of the three tanks is disconnected, liquid replenishment is performed. For example, if the low liquid level of tank 2 is disconnected, the amount of ethanol for pre-washing cannot be guaranteed. Since the high liquid levels of tanks 3 and 4 are definitely disconnected, the following actions are performed: the liquid pump and the valves at the outlet of tank 4, the inlet of tank 2, and the inlet of tank 3 output power, and the valve at the inlet of tank 4 outputs power, injecting clean ethanol into tank 4 using external power. If the high point liquid level of tank No. 2 is reached, the valve inlet to tank No. 2 will be closed. After the high point liquid level of tank No. 3 is reached, the liquid pump and the valve inlet to tank No. 3 will be closed, while external power and the valve inlet to tank No. 4 will continue to operate until the high point liquid level of tank No. 4 is reached. Similarly, the above actions will be performed even if the low point liquid level of tank No. 4 is interrupted; that is, a complete liquid replenishment will be performed whenever any of the three tanks experiences a low point liquid level interruption. After the high point liquid level of tank No. 1 is reached, the valve outlet to tank No. 1 will be opened, and liquid will be discharged to the outside of the workshop by gravity. The valve outlet to tank No. 1 will be closed when the low point liquid level is reached.

[0008] Preferably, tanks 1, 2, 3, and 4 are each equipped with a high-level liquid level indicator and a low-level liquid level indicator. As the liquid is consumed, the high-level liquid levels in the three tanks will gradually become undetectable, but as long as the low-level liquid level indicator is detectable, no warning is needed; only the status of the liquid level switch should be displayed on the PLC control unit's screen.

[0009] Preferably, the liquid pump is equipped with an inlet valve and an outlet valve, both of which are connected to the frame via pipes. The inlet and outlet valves can control the inflow and outflow of liquid.

[0010] Preferably, the rotating shaft is provided with a bearing housing, a water seal ring, a water-cooling space, a water inlet hole, and a drain hole. The sealing cooling valve is opened to inject cold water into the water-cooling space for cooling, thus protecting the sealing ring and rotating shaft from the high temperatures generated by high-speed spin-drying and evaporation.

[0011] Preferably, the door has an air inlet, and the frame is equipped with an electrical control cabinet, which contains a PLC control unit. The PLC control unit is used for overall control of the equipment.

[0012] Preferably, the outer cylinder is equipped with a nitrogen concentration detection probe and an ethanol concentration detection probe. The inner cylinder is lined with a polyethylene perforated mesh and a perforated mesh clamping mechanism. The perforated mesh clamping mechanism consists of several parts, located at both ends and the middle of the inner cylinder, which use their shape and elasticity to fix the polyethylene perforated mesh to the inner cylinder.

[0013] Preferably, the outer cylinder is provided with a liquid inlet, an exhaust outlet, a liquid drain outlet on the exhaust valve, a nitrogen injection valve on the outer cylinder, and a sealing cooling valve on the water inlet. The perforated mesh clamping mechanism will not fall off due to the rotation of the dedicated inner cylinder; the stainless steel bolts only serve a positioning function. If the polyethylene perforated mesh needs to be replaced, a dedicated disassembly and cleaning device is attached to the outer surface of the outer cylinder.

[0014] The beneficial effects of this invention are as follows: This invention relates to a medical material extraction machine, which integrates the functions of cleaning, extraction, and evaporation for the cleaning, replacement, and evaporation of fibrous sodium alginate. It is suitable for the preparation of hemostatic gauze and burn gauze textile materials for clinical use. In practical use, compared with traditional medical material extraction machines, this medical material extraction machine has the following beneficial effects:

[0015] This invention enables fully automated control of the cleaning, replacement, extraction, and evaporation of fibrous seaweed fibers, as well as the processing of waste liquid, recycled liquid, and new liquid. A unique extraction method improves the success rate and efficiency of replacement. A sealed water-cooling device on the rotating shaft eliminates the risk of combustion and explosion from ethanol gas. The PLC control unit and electrical control components are separated from the machine body and installed in a control room in an isolated operating environment, further enhancing the equipment's safety. All operations require only one loading, one sampling, and one unloading to produce hemostatic gauze and burn gauze textiles suitable for clinical use; all other processes require no human intervention. This significantly improves operator safety, reduces labor intensity, and lowers the skill requirements for operators. Attached image description:

[0016] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the pipeline device of the present invention;

[0019] Figure 3 This is a schematic diagram of the special inner cylinder structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the water-cooled sealing device of the present invention.

[0021] In the diagram: 1. Frame; 2. Outer cylinder; 3. Special inner cylinder; 4. Shock absorption device; 5. Drive motor; 6. Evaporator fan; 7. Air heater; 8. Liquid pump; 9. Piping system; 10. Shaft; 11. Door; 12. Exhaust valve; 13. Tank No. 1; 14. Tank No. 2; 15. Tank No. 3; 16. Tank No. 4; 17. Inlet valve; 18. Outlet valve; 19. Outlet valve of Tank No. 1; 20. Outlet valve of Tank No. 2; 21. Outlet valve of Tank No. 3; 22. Outlet valve of Tank No. 4; 23. Inlet valve of Tank No. 1; 24. Inlet valve of Tank No. 2; 25. Inlet valve for tank No. 3; 26. Inlet valve for tank No. 4; 27. Bearing housing; 28. Water seal ring; 29. ​​Water-cooled space; 30. Water inlet hole; 31. Drain hole; 32. Air inlet; 33. PLC control unit; 34. Electrical control cabinet; 35. Nitrogen concentration detection probe; 36. Ethanol concentration detection probe; 37. High liquid level; 38. Low liquid level; 39. Polyethylene perforated mesh; 40. Perforated mesh clamping mechanism; 41. Liquid inlet; 42. Air outlet; 43. Liquid outlet; 44. Nitrogen injection valve; 45. Sealed cooling valve. Detailed implementation method:

[0022] like Figure 1-4 As shown, the specific implementation adopts the following technical solution:

[0023] Example:

[0024] A medical material extraction machine includes a frame 1, an outer cylinder 2 inside the frame 1, a dedicated inner cylinder 3 on the outer cylinder 2, a shock absorption device 4 inside the frame 1, a drive motor 5 inside the frame 1, an evaporation fan 6 inside the frame 1, an air heater 7 inside the frame 1, a liquid pump 8 on the frame 1, a pipeline device 9 on the liquid pump 8, a rotating shaft 10 on the outer cylinder 2, a door 11 on the frame 1, and an exhaust valve 12 on the outer cylinder 2.

[0025] The pipeline system 9 includes a No. 1 tank 13, a No. 2 tank 14, a No. 3 tank 15, a No. 4 tank 16, an inlet valve 17, an outlet valve 18, an outlet valve 19 for the No. 1 tank, an outlet valve 20 for the No. 2 tank, an outlet valve 21 for the No. 3 tank, an outlet valve 22 for the No. 4 tank, an inlet valve 23 for the No. 1 tank, an inlet valve 24 for the No. 2 tank, an inlet valve 25 for the No. 3 tank, an inlet valve 26 for the No. 4 tank, a high-point liquid level 37, and a low-point liquid level 38. The No. 1 tank 13 is equipped with an outlet valve. The pipeline device 9 is controlled by the following valves: Tank 13 has an inlet valve 23; Tank 24 has an outlet valve 20; Tank 35 has an outlet valve 21; Tank 46 has an outlet valve 22 and an inlet valve 26. Under the control of the PLC control unit 33, the initial state of the four tanks must be met: Tank 13 should be empty; the remaining tanks must reach the high liquid level 37 and the low liquid level 38 must be closed. Otherwise, the PLC control unit 33 should alarm with a "low liquid level fault". The low liquid level 38 of Tanks 24, 35, and 46 should be sufficient to extract the required amount of ethanol in one operation. As usage decreases, the high liquid level 37 of the three tanks will gradually become undetectable. However, as long as the low liquid level 38 can be detected, no warning is needed; only the screen interface of the PLC control unit 33 should display the status of the liquid level switch. When the low liquid level 38 of any of the three tanks is disconnected, liquid replenishment is initiated. For example, if the low liquid level 38 of tank 2 (14) is disconnected, the amount of ethanol for pre-washing cannot be guaranteed, and the high liquid level 37 of tanks 3 (15) and 4 (16) will definitely be disconnected. In this case, the following actions are taken: the liquid pump 8 and the valves 22 (out of tank 4), 24 (in of tank 2), and 25 (in of tank 3) will output power, and the valve 26 (in of tank 4) will also output power, injecting clean ethanol into tank 4 (16) using external power. If the high liquid level 37 of tank 2 (14) is reached, the valve 24 (in of tank 2) will close; after the high liquid level 37 of tank 3 (15) is reached, the liquid pump 8 and the valve 25 (in of tank 3) will close, while the external power and the valve 26 (in of tank 4) will continue to operate until the high liquid level 37 of tank 4 (16) is reached. Similarly, the above actions are performed even if the low point liquid level 38 of tank 16 is disconnected. That is to say, as long as the low point liquid level 38 of any of the three tanks is disconnected, a total liquid replenishment is performed. After the high point liquid level 37 of tank 13 is reached, the valve 19 of tank 1 is opened to drain the liquid to the outside of the workshop by gravity. When the low point liquid level 38 is reached, the valve 19 of tank 1 is closed.

[0026] Each of the four tanks—tank 13, tank 14, tank 15, and tank 16—is equipped with a high-level liquid level 37, and each is also equipped with a low-level liquid level 38. As the liquid is consumed, the high-level liquid level 37 of the three tanks will gradually become undetectable. However, as long as the low-level liquid level 38 can be detected, no warning is needed; only the status of the liquid level switch should be displayed on the screen of the PLC control unit 33.

[0027] The liquid pump 8 is equipped with an inlet valve 17 and an outlet valve 18, both of which are connected to the frame 1 via pipes. The inlet valve 17 and the outlet valve 18 can control the inflow and outflow of liquid.

[0028] The rotating shaft 10 is provided with a bearing housing 27, a water seal ring 28, a water cooling space 29, a water inlet hole 30, and a drain hole 31. A sealing cooling valve 45 is opened to inject cold water into the water cooling space 29 for cooling, thus protecting the sealing ring and rotating shaft 10 from the high temperatures generated by high-speed spin-drying and evaporation.

[0029] The door 11 has an air inlet 32, and the frame 1 has an electrical control cabinet 34, which is equipped with a PLC control unit 33. The PLC control unit 33 is used for overall control of the equipment.

[0030] The outer cylinder 2 is equipped with a nitrogen concentration detection probe 35 and an ethanol concentration detection probe 36. The inner cylinder 3 is equipped with a polyethylene perforated mesh 39 and a perforated mesh clamping mechanism 40. There are three perforated mesh clamping mechanisms 40, located at both ends and the middle of the inner cylinder, which use their shape and elasticity to fix the polyethylene perforated mesh 39 to the inner cylinder 3.

[0031] The outer cylinder 2 is equipped with a liquid inlet 41, an exhaust vent 42, a liquid outlet 43 on the exhaust valve 12, a nitrogen injection valve 44 on the outer cylinder 2, and a sealing cooling valve 45 on the water inlet 30. The perforated mesh clamping mechanism 40 will not fall off due to the rotation of the inner cylinder 3. The stainless steel bolts only serve a positioning function. If the polyethylene perforated mesh 39 needs to be replaced, a special disassembly and cleaning device is attached to the outer surface of the outer cylinder 2.

[0032] The usage state of this invention is as follows: Figure 1As shown, a medical material extraction machine includes a frame 1, an outer cylinder 2, a dedicated inner cylinder 3, a shock-absorbing device 4, a drive motor 5, an evaporating fan 6, an air heater 7, a liquid pump 8, a pipeline device 9, a rotating shaft 10, a door 11, an exhaust valve 12, a bearing seat 27, a PLC control unit 33, an electrical control cabinet 34, a nitrogen concentration detection probe 35, and an ethanol concentration detection probe 36. The outer cylinder 2, the dedicated inner cylinder 3, the shock-absorbing device 4, the drive motor 5, the evaporating fan 6, the air heater 7, the liquid pump 8, the rotating shaft 10, the door 11, the exhaust valve 12, the bearing seat 27, the air inlet 32, the nitrogen concentration detection probe 35, and the ethanol concentration detection probe 36 are all installed inside the frame 1. The pipeline device 9 is independent of the machine. The PLC control unit 33 and the electrical control cabinet 34 are installed in the control room.

[0033] The special inner cylinder 3 is rotatably installed inside the outer cylinder 2 via a rotating shaft 10. The rotating shaft 10 is connected to the drive motor 5 via a transmission device. The axial end face of the special inner cylinder 3 is provided with a front door, and the outer cylinder 2 is provided with a front door that cooperates with the front door of the special inner cylinder 3.

[0034] The upper part of the outer cylinder 2 is provided with a liquid inlet 41, an air inlet 32 ​​and an air outlet 42, the bottom of the outer cylinder 2 is provided with a liquid outlet 43, and an exhaust valve 12 is installed at the bottom of the air outlet 42 of the outer cylinder 2.

[0035] Open the door 11, load the fibrous sodium alginate into the special inner cylinder 3, close the door 11, press the explosion-proof door key set on the machine body to lock the door, and then transfer personnel leave the site. The operator in the control room will automatically operate the fibrous sodium alginate through the PLC control unit 33 installed on the electrical control cabinet 34.

[0036] Under the control of PLC control unit 33, the corresponding valves of pipeline device 9 open, and liquid pump 8 operates, injecting the compliant ethanol-proportioned liquid into outer cylinder 2 and special inner cylinder 3. The special inner cylinder 3, driven by drive motor 5 via rotating shaft 10, cleans the fibrous sodium alginate using a unique rotation method. The cleaning process is as follows: the special inner cylinder 3 rotates clockwise 3 / 4 turn, stops, then counterclockwise 3 / 4 turn, repeating this for 5 minutes, then stops for 20 minutes, repeats the rotation for 5 minutes, then stands for 20 minutes, then rotates for 5 minutes, liquid pump 8 operates, and pipeline device 9 operates, discharging the ethanol-proportioned liquid into the corresponding storage tank. The extraction is complete. After two more rinses, the ethanol-proportioned liquid source selected by pipeline device 9 is removed. Aside from the differences, the remaining steps are the same. At the end of the process, the dedicated inner cylinder 3 is driven by the drive motor 5 via the rotating shaft 10 for extraction. The extraction steps are as follows: the sealing cooling valve 45 is opened to cool the rotating shaft 10, which has been rotating for a long time, to prevent the heat generated by the shaft 10 from igniting the ethanol in the outer cylinder 2 and the dedicated inner cylinder 3. The dedicated inner cylinder 3 is driven by the drive motor 5 via the rotating shaft 10 to rotate at a cleaning speed for 16 seconds, then rotates at a uniform speed (approximately 100 rpm). Then, the liquid pump 8 and pipeline device 9 operate, discharging the ethanol solution into the corresponding storage tank. After the set extraction time is reached, the deceleration stops, and after a 60-second delay, the liquid pump 8, pipeline device 9, and sealing cooling valve 45 are shut off.

[0037] Under the control of PLC control unit 33, exhaust valve 12, evaporator fan 6 and nitrogen injection valve 44 work. The special inner cylinder 3 is driven by drive motor 5 through rotating shaft 10 to reduce concentration. The concentration reduction process is as follows: the special inner cylinder rotates forward for 25 seconds, stops for 5 seconds, and then rotates backward for 25 seconds, and so on. Nitrogen concentration detection probe 35 and ethanol concentration detection probe 36 start detection. Nitrogen injection valve 44 injects nitrogen into outer cylinder 2 and special inner cylinder 3. Exhaust valve 12 and evaporator fan 6 work to discharge the mixed gas to the recovery device. When the nitrogen concentration is higher than 90% and the ethanol concentration is lower than 20% LEL, the concentration reduction work ends.

[0038] Under the control of PLC control unit 33, exhaust valve 12, evaporator fan 6, air heater 7, nitrogen injection valve 44, and sealing cooling valve 45 operate. The special inner cylinder 3 is driven by the drive motor 5 through the rotating shaft 10 to carry out evaporation. The evaporation process is as follows: the special inner cylinder 3 rotates forward for 25 seconds, stops for 5 seconds, and then rotates backward for 25 seconds, and so on. The nitrogen concentration detection probe 35 and the ethanol concentration detection probe 36 start detection. The temperature control unit in PLC control unit 33 starts detection. The nitrogen injection valve 44 injects nitrogen into the outer cylinder 2 and the special inner cylinder 3. The exhaust valve 12 and the evaporator fan 6 operate to discharge the mixed gas to the recovery device. When the temperature reaches the set temperature, the air heater 7 stops. When the temperature is lower than the set value, the air heater 7 turns on. When the time control unit in PLC control unit 33 reaches the set time and the nitrogen concentration is higher than 90% and the ethanol concentration is infinitely close to 0% LEL, the evaporation work ends, and all valves and liquid pump 8 are closed.

[0039] Under the control of PLC control unit 33, the entire washing and drying process is completed. The operator in the control room operates PLC control unit 33 to open door 11, and loading and unloading personnel enter the work area to remove the fibrous sodium alginate.

[0040] The air heater 7 is connected to the atmosphere and the air inlet 32. The heated gas enters the special inner cylinder 3 from the upper end of the door 11 through the air inlet 32 ​​and effectively enters the sodium alginate fiber inside the special inner cylinder 3. The cooled mixed gas enters the air duct through the exhaust valve 12 and is discharged to the ethanol gas recovery device through the exhaust port 42 under the action of the evaporator fan 6.

[0041] The top of the outer cylinder 2 is equipped with a nitrogen concentration detection probe 35, and the evaporator fan 6 and the exhaust port 42 are equipped with an ethanol concentration detection probe 36. Together, they form a system for safety monitoring during the evaporation process.

[0042] like Figure 2As shown, the pipeline device 9 includes tank 1 (13), tank 2 (14), tank 3 (15), tank 4 (16), inlet valve 17, outlet valve 18, outlet valve 19 (tank 1), outlet valve 20 (tank 2), outlet valve 21 (tank 3), outlet valve 22 (tank 4), inlet valve 23 (tank 1), inlet valve 24 (tank 2), inlet valve 25 (tank 3), inlet valve 26 (tank 4), high point liquid level 37, low point liquid level 38, and a liquid pump 8 installed at... Within frame 1, to prevent mixing of ethanol solutions, valves 20 (outlet from tank 2), 21 (outlet from tank 3), 22 (outlet from tank 4), 23 (inlet from tank 1), 24 (inlet from tank 2), and 25 (inlet from tank 3) are all connected to the outlet and inlet of liquid pump 8. Tank 13 is a waste liquid tank, tank 14 is a main washing tank, tank 15 is a rinsing tank, and tank 16 is a new liquid tank. Each tank is equipped with a high liquid level 37 and a low liquid level 37. When the liquid level of tank 13 reaches the high point 37, the valve 19 of tank 1 opens, and the ethanol is discharged to the ethanol recovery device by gravity. When the low point 38 of tank 1 is disconnected, the valve 19 of tank 1 closes. When the low point 38 of tank 4 is reached, the valve 26 of tank 4 opens, and external power injects 99% ethanol into tank 4 from the outside. The control principle of pipeline device 9 is as follows: Under the control of PLC control unit 33, the initial state of the four tanks should be met first. Tank 13 should be empty. The other tanks should reach the high point 37 and the low point 38 should be closed. Otherwise, PLC control unit 33 should alarm and indicate "low liquid level fault". The low point 38 of tanks 2, 3, 15 and 4 should be sufficient to extract the amount of ethanol in one operation. As usage decreases, the high liquid level 37 of the three tanks will gradually become undetectable. However, as long as the low liquid level 38 can be detected, no warning is needed; only the screen interface of the PLC control unit 33 should display the status of the liquid level switch. When the low liquid level 38 of any of the three tanks is disconnected, liquid replenishment is initiated. For example, if the low liquid level 38 of tank 2 (14) is disconnected, the amount of ethanol for pre-washing cannot be guaranteed, and the high liquid level 37 of tanks 3 (15) and 4 (16) will definitely be disconnected. In this case, the following actions are taken: the liquid pump 8 and the valves 22 (out of tank 4), 24 (in of tank 2), and 25 (in of tank 3) will output power, and the valve 26 (in of tank 4) will also output power, injecting clean ethanol into tank 4 (16) using external power. If the high liquid level 37 of tank 2 (14) is reached, the valve 24 (in of tank 2) will close; after the high liquid level 37 of tank 3 (15) is reached, the liquid pump 8 and the valve 25 (in of tank 3) will close, while the external power and the valve 26 (in of tank 4) will continue to operate until the high liquid level 37 of tank 4 (16) is reached. Similarly, the above actions are performed even if the low point liquid level 38 of tank 16 is disconnected. That is to say, as long as the low point liquid level 38 of any of the three tanks is disconnected, a total liquid replenishment is performed. After the high point liquid level 37 of tank 13 is reached, the valve 19 of tank 1 is opened to drain the liquid to the outside of the workshop by gravity. When the low point liquid level 38 is reached, the valve 19 of tank 1 is closed.

[0043] like Figure 3As shown, the water-cooled structure of the sealing device includes a rotating shaft 10, a bearing housing 27, a water seal ring 28, a water-cooled space 29, a water inlet 30, a drain hole 31, and a sealing cooling valve 45. The rotating shaft 10 is rotatably mounted on the bearing housing 27 via a bearing. The bearing housing 27 is fixedly connected to the outer cylinder 2. A water-cooled structure is provided between the bearing housing 27 and the rotating shaft 10. The water-cooled structure includes two water seal rings 28 sequentially fitted onto the rotating shaft 10. Both water seal rings 28 seal the gap between the rotating shaft 10 and the bearing housing 27, forming a water-cooled space 29 between the two water seal rings 28. The bearing housing 27 is provided with a water inlet 30 and a drain hole 31 communicating with the water-cooled space 29. The sealing cooling valve 45 is opened to inject cold water into the water-cooled space 29 to cool it, protecting the sealing ring and the rotating shaft 10 from the high temperatures generated by high-speed spin drying and evaporation.

[0044] like Figure 4 As shown, the special inner cylinder 3 structure includes a polyethylene perforated mesh 39 and a perforated mesh clamping mechanism 40. The length of the polyethylene perforated mesh 39 is the inner circumference of the special inner cylinder 3, and the width is the same as that of the special inner cylinder 3. It is evenly laid on the inner surface of the special inner cylinder 3. The perforated mesh clamping mechanism 40 is made of 304 stainless steel with a thickness of 1.5mm and a width of 25mm. The shape of the perforated mesh clamping mechanism 40 is the same as the inner surface of the special inner cylinder 3. It extends out of the special inner cylinder 3 at both ends using a special bending method and is fixed to the outside of the special inner cylinder 3 with M5*16 stainless steel bolts. There are 3 perforated mesh clamping mechanisms 40 in total, which are respectively set at both ends and the middle position of the special inner cylinder. The polyethylene perforated mesh 39 is fixed to the special inner cylinder 3 by its shape and its own elasticity. Due to the centrifugal force generated by rotation, the perforated mesh clamping mechanism 40 will not fall off due to the rotation of the special inner cylinder 3. The stainless steel bolts only serve a positioning function. If the polyethylene perforated mesh 39 needs to be replaced, a special disassembly and cleaning device is attached to the outer surface of the outer cylinder 2.

[0045] This invention employs a unique extraction method for cleaning, replacing, and extracting fibrous sodium alginate. After repeated testing, the final sample inspection achieved a 100% pass rate, reducing the cleaning and replacement time for the same quality of fibrous sodium alginate from two days to two hours, significantly improving production efficiency. Under monitoring, the PLC control system and electrical control cabinet 34 are located in an independent control room, ensuring the safety of operators and the work area. All extraction and evaporation processes are carried out within this invention, eliminating intermediate steps, reducing manual labor intensity, and lowering the skill requirements for operators. This invention fully meets the standards for mass production.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A medical material extraction machine for cleaning, displacement, and evaporation of fibrous sodium alginate, comprising a frame (1), characterized in that: The frame (1) is provided with an outer cylinder (2), a nitrogen injection valve (44) is provided on the outer cylinder (2), a special inner cylinder (3) is provided on the outer cylinder (2), a polyethylene perforated mesh (39) is provided inside the special inner cylinder (3), a perforated mesh pressing mechanism (40) is provided inside the special inner cylinder (3), a shock absorption device (4) is provided inside the frame (1), a drive motor (5) is provided inside the frame (1), an evaporator fan (6) is provided inside the frame (1), an air heater (7) is provided inside the frame (1), a liquid pump (8) is provided on the frame (1), a pipeline device (9) is provided on the liquid pump (8), a rotating shaft (10) is provided on the outer cylinder (2), a door (11) is provided on the frame (1), and an exhaust valve (12) is provided on the outer cylinder (2). The rotating shaft (10) is provided with a bearing seat (27), the bearing seat (27) is provided with a water seal ring (28), the bearing seat (27) is provided with a water cooling space (29), the bearing seat (27) is provided with a water inlet hole (30), the bearing seat (27) is provided with a drain hole (31); a sealing cooling valve (45) is provided on the water inlet hole (30); An electrical control cabinet (34) is provided on the frame (1), and a PLC control unit (33) is provided on the electrical control cabinet (34). A nitrogen concentration detection probe (35) is provided on the outer cylinder (2), and an ethanol concentration detection probe (36) is provided on the outer cylinder (2). During operation, open the door (11), load the fibrous sodium alginate into the special inner cylinder (3), close the door (11), press the explosion-proof door key set on the machine body to lock the door, and then transfer personnel to leave the site. The operator in the control room will automatically operate the fibrous sodium alginate through the PLC control unit (33) installed on the electrical control cabinet (34). Under the control of the PLC control unit (33), the corresponding valves of the pipeline device (9) are opened, the liquid pump (8) works, and the liquid with the correct ethanol ratio is injected into the outer cylinder (2) and the special inner cylinder (3). The special inner cylinder (3) is cleaned by the drive motor (5) through the rotating shaft (10) in a unique rotation mode. The cleaning process is as follows: the special inner cylinder (3) first rotates forward, stops, then rotates backward, and repeats this process, then stops, repeats the rotation, then stands still, then rotates again, the liquid pump (8) works, the pipeline device (9) works, and the liquid with the correct ethanol ratio is discharged into the corresponding storage tank. The extraction work is completed, and then after 2 The second rinsing process is the same except that the source of the ethanol solution selected by the pipeline device (9) is different. At the end of the process, the special inner cylinder (3) is driven by the drive motor (5) through the rotating shaft (10). The extraction steps are as follows: the sealing cooling valve (45) is opened, the special inner cylinder (3) is driven by the drive motor (5) through the rotating shaft (10) to rotate forward at the cleaning speed, then rotate forward at the uniform speed, and then the liquid pump (8) and pipeline device (9) work to discharge the ethanol solution into the corresponding storage tank. After the set extraction time is reached, the deceleration stops, and after a delay, the liquid pump (8), pipeline device (9) and sealing cooling valve (45) are turned off. Under the control of the PLC control unit (33), the exhaust valve (12), the evaporator (6) and the nitrogen injection valve (44) work. The special inner cylinder (3) is driven by the drive motor (5) through the rotating shaft (10) to reduce the concentration. The concentration reduction process is as follows: the special inner cylinder first rotates forward, stops, and then rotates in reverse. This process is repeated. The nitrogen concentration detection probe (35) and the ethanol concentration detection probe (36) start to detect. The nitrogen injection valve (44) injects nitrogen into the outer cylinder (2) and the special inner cylinder (3). The exhaust valve (12) and the evaporator (6) work to discharge the mixed gas into the recovery device. When the nitrogen concentration is higher than 90% and the ethanol concentration is lower than 20% LEL, the concentration reduction work ends. Under the control of the PLC control unit (33), the exhaust valve (12), evaporation fan (6), air heater (7), nitrogen injection valve (44) and sealing cooling valve (45) work. The special inner cylinder (3) is driven by the drive motor (5) through the rotating shaft (10). The evaporation process is as follows: the special inner cylinder (3) rotates forward first, stops, and then rotates in reverse, and so on. The nitrogen concentration detection probe (35) and ethanol concentration detection probe (36) start to detect. The temperature control unit in the PLC control unit (33) starts to detect. The nitrogen injection valve (44) injects nitrogen into the outer cylinder (2) and the special inner cylinder (3). The exhaust valve (12) and evaporation fan (6) work to discharge the mixed gas into the recovery device. When the temperature reaches the set temperature, the air heater (7) stops. When the temperature is lower than the set value, the air heater (7) turns on. When the time control unit in the PLC control unit (33) reaches the time and the nitrogen concentration is higher than 90% and the ethanol concentration is infinitely close to 0% LEL, the evaporation work ends and all valves and liquid pump (8) are closed. Under the control of the PLC control unit (33), the entire washing and drying process is completed. The operator in the control room operates the PLC control unit (33) to open the door (11), and the loading and unloading personnel enter the work area to take out the fibrous sodium alginate.

2. The medical material extraction machine according to claim 1, characterized in that: The pipeline system (9) includes a No. 1 tank (13), a No. 2 tank (14), a No. 3 tank (15), a No. 4 tank (16), an inlet valve (17), an outlet valve (18), an outlet valve for the No. 1 tank (19), an outlet valve for the No. 2 tank (20), an outlet valve for the No. 3 tank (21), an outlet valve for the No. 4 tank (22), an inlet valve for the No. 1 tank (23), an inlet valve for the No. 2 tank (24), an inlet valve for the No. 3 tank (25), an inlet valve for the No. 4 tank (26), a high point liquid level (37), and a low point liquid level (38). The No. 1 tank (13) is equipped with... The No. 1 tank valve (19) is provided with the No. 1 tank valve (23), the No. 2 tank valve (20) is provided with the No. 2 tank valve (24), the No. 2 tank valve (21) is provided with the No. 3 tank valve (25), the No. 4 tank valve (22) is provided with the No. 4 tank valve (26), and the No. 4 tank valve (26) is provided with the No. 4 tank valve (24).

3. The medical material extraction machine according to claim 2, characterized in that: High liquid level (37) is set on tank No. 1 (13), tank No. 2 (14), tank No. 3 (15) and tank No. 4 (16), and low liquid level (38) is set on tank No. 1 (13), tank No. 2 (14), tank No. 3 (15) and tank No. 4 (16).

4. The medical material extraction machine according to claim 1, characterized in that: The liquid pump (8) is equipped with an inlet valve (17) and an outlet valve (18). Both the inlet valve (17) and the outlet valve (18) are connected to the frame (1) through pipes.

5. A medical material extraction machine according to claim 1, characterized in that: An air inlet (32) is provided on the door body (11).

6. A medical material extraction machine according to claim 1, characterized in that: The outer cylinder (2) is provided with a liquid inlet (41), the outer cylinder (2) is provided with an air outlet (42), and the exhaust valve (12) is provided with a liquid outlet (43).

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