A drug concentrating apparatus and a drug concentrating method

Abstract

The application relates to a medicine concentration device and a medicine concentration method, which are applied to the field of pharmaceutical equipment. The device comprises a stock solution tank, the stock solution tank is provided with an evaporator, the evaporator is arranged at the bottom of the stock solution tank, a cleaning mechanism is further arranged in the stock solution tank, the cleaning mechanism is in abutment with the side wall of the stock solution tank and reciprocally moves along the height direction of the stock solution tank; the cleaning mechanism comprises a wall scraping assembly and a residue discharging assembly, the wall scraping assembly is in abutment with the inner wall of the stock solution tank and reciprocally moves along the height direction of the stock solution tank, and the residue discharging assembly is arranged at the bottom of the stock solution tank and is connected with the outside environment. The application has the effect that there is almost no medicine dirt deposition on the side wall, and the influence of the residual medicine dirt on the medicinal effect during the next concentration is reduced.

Description

Technical Field

[0001] This application relates to the field of pharmaceutical equipment, and in particular to drug concentration apparatus and drug concentration methods. Background Technology

[0002] Drug concentration is a common step in the pharmaceutical process. Especially in the production of concentrated traditional Chinese medicine solutions, drug concentration equipment is generally used. This equipment is typically an evaporation concentration unit. During evaporation, scale deposits form on the inner walls of the evaporator. Over time, this scale buildup can affect the efficacy of the concentrated solution, thus requiring regular cleaning of the drug concentration equipment.

[0003] A related technology proposes a drug concentration and evaporation device that incorporates a vibrating cleaning mechanism. This mechanism continuously agitates the drug solution during concentration to prevent scale buildup on the inner wall of the device. However, this method only slows down the deposition of scale on the sidewalls and does not clean existing scale. Consequently, its cleaning effect is poor, and scale will continue to accumulate on the inner wall of the drug concentration device after prolonged use, affecting the drug's efficacy. Summary of the Invention

[0004] To address the problem of poor cleaning of drug scale on the inner wall of a drug concentration device, this application provides a drug concentration device and a drug concentration method.

[0005] Firstly, the drug concentration apparatus provided in this application adopts the following technical solution:

[0006] A drug concentration device includes a stock solution tank, the stock solution tank is provided with an evaporator placed at the bottom of the stock solution tank, and a cleaning mechanism is also provided inside the stock solution tank, the cleaning mechanism abutting against the side wall of the stock solution tank and reciprocating along the height direction of the stock solution tank;

[0007] The cleaning mechanism includes a wall scraping component and a slag discharge component. The wall scraping component abuts against the inner wall of the raw liquid tank and moves back and forth along the height direction of the raw liquid tank. The slag discharge component is located at the bottom of the raw liquid tank and connects the raw liquid tank with the external environment.

[0008] By adopting the above technical solution, after the liquid medicine is concentrated by evaporation and discharged from the original liquid tank, the wall scraping component can be activated to clean the inner wall of the original liquid tank. Before the next evaporation and concentration, the scale deposited on the side wall of the original liquid tank is removed, reducing the impact of residual scale on the efficacy of the medicine during the next concentration.

[0009] Optionally, the stock solution tank includes a tank body and a tank cover. The tank cover is closed on the tank body. The evaporator is placed inside the tank body and fixed to the bottom of the tank body. A receiving groove for accommodating the wall scraping assembly is opened on the end face of the tank cover facing the tank body. A first sealing plate is provided at the opening of the receiving groove. The first sealing plate closes or opens the receiving groove.

[0010] A limiting groove is formed on the side wall of the tank along the height direction of the tank. A second sealing plate is provided at the opening of the limiting groove. The limiting groove is connected to the receiving groove. The wall scraping assembly moves back and forth in the limiting groove.

[0011] By adopting the above technical solution, the scraping component is completely hidden in the container when it is not working. At this time, the container is sealed by the first sealing plate, and the scraping component will not come into contact with the liquid in the original liquid tank. When the scraping component is hidden in the container, the second sealing plate closes the limiting groove, so the liquid will not be contaminated during the concentration process and the drug concentration process will not be affected.

[0012] Optionally, the wall scraping assembly includes a driving part and a scraping part, the driving part being disposed in the limiting groove and the scraping part being disposed on the driving part and being driven by the driving part to reciprocate within the limiting groove.

[0013] By adopting the above technical solution, the scraping part abuts against the side wall of the tank. The scraping part is driven by the drive part to move along the height of the tank. The scraping part scrapes the side wall of the tank, so as to minimize the scale on the side wall of the tank before each drug concentration and reduce the impact on the drug efficacy during the concentration process.

[0014] Optionally, the drive unit includes a sliding track, a track motor, and a mounting base. The sliding track is fixed in the limiting groove and is arranged along the length of the limiting groove. The track motor is mounted on the sliding track and moves along the sliding track. The mounting base is fixed to the track motor and is driven by the drive motor to slide back and forth along the sliding track.

[0015] By adopting the above technical solution, the sliding track is hidden in the limiting groove and sealed by the second sealing plate, so that the sliding track will not contaminate the medicine liquid during the evaporation of the medicine liquid through the sealing effect of the second sealing plate.

[0016] Optionally, the scraping part is fixed on the mounting base. The scraping part includes a rib and an adhesive strip. The rib is attached to the inner wall of the original liquid tank, and the adhesive strip is fixed to the rib and abuts against the inner wall of the original liquid tank.

[0017] By adopting the above technical solution, the adhesive strip is fixed by the bone strip, which can tightly abut against the inner wall of the tank. As the bone strip is moved by the mounting seat, the adhesive strip moves back and forth along the height of the tank, thereby scraping off the drug residue that has been deposited on the inner wall. This minimizes the amount of drug residue on the side wall of the tank before each drug concentration, reducing the impact on the efficacy of the drug during the concentration process.

[0018] Optionally, the hollow bone strip forms a cavity, the mounting base is provided with a storage box, a plurality of spray holes are opened on the bone strip, a liquid pump is provided in the storage box, the outlet of the liquid pump is connected to the cavity in the bone strip through a hose, the spray holes are connected to the cavity and the spray holes face the original liquid tank.

[0019] By employing the above technical solution, cleaning agent is continuously sprayed from the nozzles during the scraping process to assist the scraping section in cleaning, thereby improving cleaning efficiency. Furthermore, the cleaning process occurs after drug concentration is completed and before the next concentration begins, thus not affecting the drug concentration process. Waste liquid generated during the cleaning process is discharged through the slag discharge assembly.

[0020] Optionally, a first rotating shaft is rotatably connected to the side wall of the receiving groove, the first sealing plate is fixed to the first rotating shaft, a first coil spring is sleeved on the end of the rotating shaft, the first coil spring deforms and stores energy when the first sealing plate is opened, a first sealing strip is fixed on the outer edge of the first sealing plate, and the first sealing strip abuts against the side wall of the receiving groove.

[0021] The side wall of the limiting groove is rotatably connected to a second rotating shaft. The second sealing plate is fixed to the second rotating shaft. A second coil spring is sleeved on the second rotating shaft. When the second sealing plate is opened, the second coil spring deforms and stores energy. A second sealing strip is fixed on the outer edge of the second sealing plate. The second sealing strip abuts against the side wall of the limiting groove.

[0022] The second sealing plate contacts the end face of the first sealing plate opposite to the receiving groove. The second sealing plate is provided with a guide groove, and the scraping component passes through the guide groove to push the second sealing plate open.

[0023] By adopting the above technical solution, the first and second sealing plates are opened during the cleaning of the sidewalls, and the first and second sealing plates are closed after cleaning is completed. This prevents the medicine from flowing into the receiving tank and the limiting tank during the concentration of the medicine, thus avoiding contamination of the medicine in the receiving tank and the limiting tank.

[0024] Optionally, the slag discharge assembly includes a slag discharge pipe and a slag discharge valve. The slag discharge pipe is located at the bottom of the raw liquid tank and is connected to the raw liquid tank. The slag discharge valve is located on the slag discharge pipe to close or open the slag discharge pipe.

[0025] By adopting the above technical solution, the cleaned waste liquid is discharged through the slag discharge pipe, keeping the original liquid tank clean and reducing the impact of drug scale on the next drug concentration.

[0026] Secondly, this application provides a drug concentration method, which adopts the following technical solution:

[0027] A method for drug concentration, implemented using a drug concentration apparatus, includes the following steps:

[0028] Preparation steps: Open the lid of the can and fill the can with the original medicine solution. After filling the can to the upper limit, close the lid of the can onto the can.

[0029] In the evaporation and concentration step, the evaporator inside the tank is started to evaporate the drug solution. During the evaporation process, the drug solution is continuously agitated to promote uniform mixing until the drug evaporation and concentration are completed.

[0030] In the liquid discharge step, the medicine after evaporation is completed is discharged from the discharge pipe at the bottom of the tank;

[0031] The slag removal step involves driving the scraper assembly to move along the height of the tank, scraping the inner wall of the tank, removing the scale deposited on the side wall, and discharging it from the slag discharge port at the bottom of the tank. The cleaning of the inner wall of the tank is then complete.

[0032] By adopting the above technical solution, after each drug concentration, the wall scraping component needs to scrape and clean the side wall of the tank. During the cleaning process, the slag discharge port is opened, so that the cleaned drug residue can be directly discharged from the slag discharge pipe, so that there is almost no drug residue deposit on the side wall, reducing the impact of residual drug residue on the efficacy during the next concentration.

[0033] In summary, this application includes at least one of the following beneficial effects:

[0034] 1. After each drug concentration, the wall scraping component needs to scrape and clean the side wall of the tank. During the cleaning process, the slag discharge port is opened so that the cleaned drug residue can be discharged directly from the slag discharge port, so that there is almost no drug residue on the side wall, reducing the impact of residual drug residue on the efficacy during the next concentration.

[0035] 2. When the scraping component is not in operation, it is completely hidden in the container. At this time, the container is sealed by the first sealing plate, and the scraping component will not come into contact with the liquid in the original liquid tank. When the scraping component is hidden in the container, the second sealing plate closes the limiting groove. Similarly, the liquid will not be contaminated during the concentration process and will not affect the drug concentration process. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a drug concentration device according to an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a drug concentration device according to an embodiment of this application;

[0038] Figure 3 This is a schematic diagram illustrating the relationship between the lid and the body of a drug concentration device in an embodiment of this application;

[0039] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0040] In the diagram: 1. Raw material tank; 11. Tank cover; 111. Receptacle; 112. First sealing plate; 113. First rotating shaft; 114. First coil spring; 12. Tank body; 121. Limiting groove; 122. Second sealing plate; 123. Second rotating shaft; 124. Second coil spring; 125. Guide groove; 126. Vibrating plate; 13. Discharge pipe; 131. Discharge valve; 14. Pressure relief valve; 2. Evaporator; 3. Cleaning mechanism; 31. Wall scraping assembly; 311. Drive unit; 3111. Sliding track; 3112. Mounting base; 312. Scraping unit; 3121. Rib; 3122. Storage tank; 3123. Liquid pump; 32. Slag discharge assembly; 321. Slag discharge pipe; 322. Slag discharge valve. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0042] This application discloses a drug concentration apparatus. (Refer to...) Figure 1 and Figure 2 This drug concentration device is used to concentrate the medicinal liquid of traditional Chinese medicine. The device includes a stock solution tank 1 for holding the medicinal liquid, with an evaporator 2 installed at the bottom of the tank 1 for evaporating the liquid. An outlet pipe for removing the evaporated liquid is located at the bottom of the stock solution tank 1, and this outlet pipe is connected to the stock solution tank 1. The stock solution tank 1 includes a tank body 12 and a lid 11. The lid 11 is used to seal the tank body 12 during the concentration process. A receiving groove 111 is formed on the lid 11, and the receiving groove 111 is formed along the periphery of the lid 11 to accommodate a cleaning mechanism 3. The cleaning mechanism 3 scrapes off the medicinal residue deposited on the inner wall of the tank body 12 by abutting against the inner wall and moving along the height of the tank body 12.

[0043] Reference Figure 2 and Figure 3The cleaning mechanism 3 includes a wall scraping assembly 31 and a slag discharge assembly 32. The wall scraping assembly 31 is used to scrape off the scale on the side wall of the tank 12, while the slag discharge assembly 32 is fixed to the bottom of the tank 12 and communicates with the tank 12 so that the scale can be directly discharged after being scraped off. The wall scraping assembly 31 includes a driving part 311 and a scraping part 312. A limiting groove 121 is formed on the inner wall of the tank 12 to accommodate the driving part 311. The driving part 311 is used to drive the scraping part 312 to reciprocate along the height direction of the tank 12. In order to facilitate the hiding of the scraping part 312 when not in use, when the can lid 11 is closed on the tank 12, the receiving groove 111 and the limiting groove 121 are interconnected so that the scraping part 312 can move into the limiting groove 121 and be hidden.

[0044] Reference Figure 3 and Figure 4 The drive unit 311 is disposed within the limiting groove 121. When the drive unit 311 drives the scraping part 312, the scraping part 312 can slide along the limiting groove 121 so that the scraping part 312 can scrape the inner wall of the tank 12. The drive unit 311 includes a sliding rail 3111 and a rail motor. The rail motor can move on the rail to drive the scraping part 312 to scrape the side wall of the tank 12 and remove the scale. A mounting seat 3112 is fixed on the rail motor for mounting the scraping part 312. The drive unit 311 can also be a combination of a lead screw and a sliding sleeve. The lead screw is also rotatably connected within the limiting groove 121, and the motor for driving the lead screw can be fixed to the outside of the tank 12. A mounting seat 3112 can also be fixed on the sliding sleeve, and the mounting seat 3112 extends out of the limiting groove 121 for mounting the scraping part 312. Because the limiting groove 121 can only move along the length direction of the limiting groove 121, it can repeatedly scrape the inner wall along the height direction of the tank body 12.

[0045] Reference Figure 3 and Figure 4 The scraping part 312 includes a rib 3121 and a rubber strip. A clamping groove is formed on the rib 3121 along its length. The rubber strip is inserted into the clamping groove and abuts against the inner wall of the can 12. The rib 3121 is fixed on the mounting base 3112. When the track motor or electric motor rotates, the mounting base 3112 can move back and forth along the height direction of the can 12, causing the rubber strip to scrape against the inner wall of the can 12, removing the medicine residue adhering to the inner wall of the can 12.

[0046] Reference Figure 3 and Figure 4A storage tank 3122 can also be fixed on the mounting base 3112. A cavity is created inside the frame 3121 to form a hollow tubular structure. One end of the frame 3121 is closed. A liquid pump 3123 is installed inside the storage tank 3122 to pump the cleaning solution stored therein. The outlet of the liquid pump 3123 is connected to the frame 3121 via a hose to draw the cleaning solution into the frame 3121. A spray hole is created on the surface of the frame 3121, communicating with the cavity inside, allowing the pumped cleaning solution to be sprayed out from the spray hole. The spray hole faces the inner wall of the tank 12, ensuring accurate spraying of the cleaning solution onto the inner wall of the tank 12. When the rubber strip scrapes away the scale on the inner wall of the tank 12, the cleaning solution is simultaneously sprayed onto the inner wall of the tank, working together with the rubber strip to remove the scale.

[0047] Reference Figure 1 and Figure 2 The mixture of pesticide residue and cleaning solution flows along the inner wall of tank 12 to the slag discharge assembly 32, and is then discharged through the slag discharge assembly 32. The slag discharge assembly 32 includes a slag discharge pipe 321, which is fixed to the bottom of tank 12 and connected to the inside of tank 12. A slag discharge valve 322 is fixed to the slag discharge pipe 321, controlling its opening and closing. A pesticide discharge pipe 13 is also required at the bottom of tank 12, with a pesticide discharge valve 131 controlling its opening and closing. After the pesticide solution has evaporated and concentrated, it can be discharged through the pesticide discharge pipe 13. During cleaning, the pesticide discharge valve 131 is closed, and the slag discharge pipe 321 is opened, allowing the waste residue after cleaning to be discharged through the slag discharge pipe 321.

[0048] Reference Figure 2 and Figure 3To prevent the cleaning mechanism 3 from contaminating the drug solution during drug concentration, a first rotating shaft 113 is rotatably connected at the opening of the container 111 along the length of the container 111. A first sealing plate 112 is fixed on the first rotating shaft 113. The rotation of the first sealing plate 112 drives the first rotating shaft 113 to rotate. A first torsion spring or a first coil spring 114 is provided at both ends of the first rotating shaft 113. When the scraping part 312 moves out of the container 111, the scraping part 312 pushes the first sealing plate 112, causing the first torsion spring or the first coil spring 114 to deform. When the scraping part 312 is completely removed from the container 111, the first sealing plate 112 can be re-closed on the container 111 under the force of the first torsion spring or the first coil spring 114 restoring its deformation, so as to seal the container 111. Similarly, when the cleaning unit returns to the container 111 after cleaning, it can push the first sealing plate 112 to open, allowing the cleaning unit to smoothly enter the container 111. After the cleaning unit enters the container 111, the first sealing plate 112 returns to its closed state, thus sealing the container 111. To improve the sealing effect, the first sealing strip is fixed at the position where the periphery of the first sealing plate 112 abuts against the container 111, so that the container 111 remains in a closed state during the drug concentration process, reducing the risk of drug contamination.

[0049] Reference Figure 2 and Figure 3 The limiting groove 121 also needs to be sealed off, so a second rotating shaft 123 is also provided at the opening of the limiting groove 121. The second rotating shaft 123 is arranged in the limiting groove 121 along its length and can rotate. A second sealing plate 122 is fixed on the second rotating shaft 123. A second torsion spring or a second coil spring 124 is fixed at both ends of the second rotating shaft 123 as the power for resetting. A guide groove 125 is provided on the second sealing plate 122. When the cleaning part transitions from the receiving groove 111 to the limiting groove 121, the second sealing plate 122 can be easily opened through the guide groove 125, allowing the cleaning part to move back and forth along the side wall of the tank 12, pushing the rubber strip to scrape the inner wall of the tank 12. During the scraping process, the second sealing plate 122 is in the open state. After the scraping is completed and the cleaning part returns to the receiving groove 111, the second sealing plate 122 can be reset under the action of the second torsion spring or the second coil spring 124, re-sealing the limiting groove 121. For better sealing effect, a second sealing strip is arranged around the second sealing plate 122 at the position where it abuts against the side wall of the limiting groove 121. This ensures that the limiting groove 121 remains in a closed state during the drug concentration process, reducing the risk of drug contamination.

[0050] Reference Figure 1 and Figure 2An evaporator 2 for evaporating the medicinal liquid needs to be fixed inside the tank 12. The evaporator 2 is fixed inside the tank 12 to heat the medicinal liquid. A vibrating plate 126 is fixed above the evaporator 2 to continuously agitate the medicinal liquid during the concentration process, making the medicinal liquid more evenly mixed. At the same time, it slows down the sedimentation of solid residue in the medicinal liquid onto the side wall of the tank 12 during the concentration process. This works in conjunction with the cleaning unit to make the inner wall of the tank 12 cleaner and reduce the accumulation of scale on the inner wall of the tank 12. This reduces the impact of scale on the medicinal liquid during the concentration process.

[0051] In this application, when concentrating a drug solution using a drug concentration device, the inner wall of the tank 12 can be cleaned before the drug solution is added; this is called a primary cleaning. During cleaning, the lid 11 can be placed on the tank 12. The cleaning unit moves from the receiving groove 111 to the limiting groove 121, and then moves along the limiting groove 121 towards the bottom of the tank 12. At this time, the cleaning unit scrapes the inner wall of the tank 12, thus achieving a cleaning effect. When it reaches the bottom of the tank 12, it can return to the receiving groove 111 to complete the cleaning.

[0052] After initial cleaning, the undiluted medicine is placed into tank 12. Before heating with evaporator 2, tank 12 is sealed with lid 11. At this time, the cleaning unit is hidden inside the receiving tank 111, which is sealed by first sealing plate 112, and the limiting groove 121 is sealed by second sealing plate 122. This allows the medicine to be concentrated in a sealed environment, preventing external contamination. A pressure relief valve 14 is located on lid 11 to release steam from tank 12 during the heating and evaporation process, preventing excessive pressure inside tank 12.

[0053] During the drug concentration process, the vibrating plate 126 continuously vibrates, keeping the drug solution in a state of constant oscillation. This prevents the residue in the drug solution from easily settling on the side wall of the tank 12 until the drug solution concentration is complete.

[0054] After the medicine solution is concentrated, it is discharged through the medicine discharge pipe 13. Then the medicine discharge pipe 13 is closed and the slag discharge valve 322 is opened. At this time, a second cleaning is performed. The second cleaning process is the same as the first cleaning process. During the second cleaning, the residual medicine solution adhering to the inner wall of the tank 12 can be scraped off, thereby reducing the impact of the scale deposited on the inner wall on the efficacy of the medicine solution when the medicine solution is concentrated again.

[0055] In this application, the concentrated medicine is evaporated by the evaporator 2, and the vibrating plate 126 keeps the medicine in an oscillating state during the evaporation process, reducing the possibility of medicine residue adhering to the inner wall of the tank 12. At the same time, the cleaning department scrapes the inner wall of the tank 12 before each concentration, further reducing the scale adhering to the inner wall of the tank 12. The efficacy of the medicine is less affected by the scale when the medicine is concentrated next time, reducing the impact of residual scale on the efficacy of the medicine during the next concentration.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drug concentration apparatus, comprising a stock solution tank (1), wherein the stock solution tank (1) is provided with an evaporator (2) disposed at the bottom of the stock solution tank (1), characterized in that: The original liquid tank (1) is also provided with a cleaning mechanism (3), which abuts against the side wall of the original liquid tank (1) and moves back and forth along the height direction of the original liquid tank (1); The cleaning mechanism (3) includes a wall scraping assembly (31) and a slag discharge assembly (32). The wall scraping assembly (31) abuts against the inner wall of the raw liquid tank (1) and moves back and forth along the height direction of the raw liquid tank (1). The slag discharge assembly (32) is located at the bottom of the raw liquid tank (1) and connects the raw liquid tank (1) with the external environment. The stock solution tank (1) includes a tank body (12) and a tank cover (11). The tank cover (11) is closed on the tank body (12). The evaporator (2) is placed inside the tank body (12) and fixed to the bottom of the tank body (12). The end face of the tank cover (11) facing the tank body (12) has a receiving groove (111) for accommodating the wall scraping assembly (31). The opening of the receiving groove (111) is provided with a first sealing plate (112). The first sealing plate (112) closes or opens the receiving groove (111). A limiting groove (121) is provided on the side wall of the tank (12) along the height direction of the tank (12). A second sealing plate (122) is provided at the opening of the limiting groove (121). The limiting groove (121) is connected to the receiving groove (111). The wall scraping assembly (31) moves back and forth in the limiting groove (121). A first rotating shaft (113) is rotatably connected to the side wall of the receiving groove (111). The first sealing plate (112) is fixed to the first rotating shaft (113). A first coil spring (114) is sleeved at the end of the rotating shaft. When the first sealing plate (112) is opened, the first coil spring (114) deforms and stores energy. A first sealing strip is fixed on the outer edge of the first sealing plate (112). The first sealing strip abuts against the side wall of the receiving groove (111). The side wall of the limiting groove (121) is rotatably connected to a second rotating shaft (123). The second sealing plate (122) is fixed to the second rotating shaft (123). A second coil spring (124) is sleeved on the second rotating shaft (123). When the second sealing plate (122) is opened, the second coil spring (124) deforms and stores energy. A second sealing strip is fixed on the outer edge of the second sealing plate (122). The second sealing strip abuts against the side wall of the limiting groove (121). The second sealing plate (122) contacts the end face of the first sealing plate (112) away from the receiving groove (111). The second sealing plate (122) is provided with a guide groove (125). The scraping assembly (31) passes through the guide groove (125) to push the second sealing plate (122) open.

2. The drug concentration apparatus according to claim 1, characterized in that: The wall scraping assembly (31) includes a driving part (311) and a scraping part (312). The driving part (311) is disposed in the limiting groove (121), and the scraping part (312) is disposed on the driving part (311) and is driven by the driving part (311) to reciprocate within the limiting groove (121).

3. The drug concentration apparatus according to claim 2, characterized in that: The drive unit (311) includes a sliding rail (3111), a track motor, and a mounting base (3112). The sliding rail (3111) is fixed in the limiting groove (121) and is arranged along the length direction of the limiting groove (121). The track motor is mounted on the sliding rail (3111) and moves along the sliding rail (3111). The mounting base (3112) is fixed to the track motor and is driven by the drive motor to slide back and forth along the sliding rail (3111).

4. The drug concentration apparatus according to claim 3, characterized in that: The scraping part (312) is fixed on the mounting base (3112). The scraping part (312) includes a rib (3121) and an adhesive strip. The rib (3121) is attached to the inner wall of the original liquid tank (1). The adhesive strip is fixed on the rib (3121) and abuts against the inner wall of the original liquid tank (1).

5. A drug concentration apparatus according to claim 4, characterized in that: The hollow rib (3121) forms a cavity. The mounting base (3112) is provided with a storage tank (3122). The rib (3121) has several spray holes. The storage tank (3122) is provided with a liquid pump (3123). The outlet of the liquid pump (3123) is connected to the cavity in the rib (3121) through a hose. The spray holes are connected to the cavity and face the original liquid tank (1).

6. A drug concentration apparatus according to claim 1, characterized in that: The slag discharge assembly (32) includes a slag discharge pipe (321) and a slag discharge valve (322). The slag discharge pipe (321) is located at the bottom of the raw liquid tank (1) and communicates with the raw liquid tank (1). The slag discharge valve (322) is located on the slag discharge pipe (321) to close or open the slag discharge pipe (321).

7. A method for drug concentration, characterized in that: The method of using the drug concentration apparatus according to any one of claims 1-6 includes the following steps: Preparation steps: Open the can lid (11), fill the can body (12) with the original medicine liquid, fill it to the upper limit of the can body (12), and then close the can lid (11) on the can body (12). In the evaporation and concentration step, the evaporator (2) inside the tank (12) is started to evaporate the drug solution. During the evaporation process, the drug solution is constantly shaken to promote uniform mixing of the drug solution until the drug evaporation and concentration are completed. In the liquid discharge step, the drug after evaporation is completed is discharged from the discharge pipe (13) at the bottom of the tank (12); In the slag removal step, drive the wall scraping assembly (31) to move along the height direction of the tank (12) to scrape the inner wall of the tank (12), remove the scale deposited on the side wall, and discharge it from the slag discharge port at the bottom of the tank (12). The inner wall of the tank (12) is cleaned and the process is complete.

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