Medical glassine paper coating production equipment
The combination of an electric push rod and threaded rod linked scraper design, ultrasonic cleaning, and ultraviolet disinfection solves the problem of incomplete cleaning in glassine paper coating production equipment for medical purposes, achieving efficient cleaning and uniform coating, meeting pharmaceutical-grade cleanliness requirements.
Patent Information
- Application Number
- CN202511259760.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2025-10-17
AI Technical Summary
Existing coating production equipment is difficult to operate and has poor results when cleaning the surface of glassine paper for medical purposes. It is difficult to adapt to the tension changes of different batches of paper, resulting in incomplete cleaning and affecting product quality and safety.
The scraper design with electric push rod and threaded rod linkage, combined with ultrasonic cleaning and ultraviolet disinfection, can achieve efficient cleaning and sterilization of the glassine paper surface; the coordinated design of coating roller and drainage block ensures uniform distribution and drying of coating liquid.
It achieves efficient cleaning and sterilization of the glassine paper surface, ensures uniform distribution and drying of the coating liquid, meets pharmaceutical-grade cleanliness requirements, reduces labor maintenance costs, and improves product qualification rate.
Smart Images
Figure CN120797463A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of glazing paper coating production equipment for medical purposes, and in particular to a glazing paper coating production equipment for medical purposes. BACKGROUND
[0002] In the coating production process of glazing paper for medical purposes, the cleanliness of its surface directly affects the product quality and safety, so the cleaning link of the production equipment to the paper surface is crucial. However, the existing coating production equipment has obvious deficiencies in the design of cleaning the surface of glazing paper for medical purposes, resulting in difficult cleaning operation and poor effect.
[0003] The cleaning assembly of the traditional equipment is mostly fixedly installed, and the relative position with the paper cannot be flexibly adjusted. Since the glazing paper for medical purposes is relatively thin (usually 25-60μm) and the surface needs to maintain extremely high flatness, the fixed cleaning structure is difficult to adapt to the tension changes of different batches of paper, and it is easy to cause paper damage due to too tight contact between the cleaning component and the paper surface, or the problem that dust, residual coating and other impurities cannot be completely removed due to too loose contact.
[0004] At the same time, the existing cleaning device is mostly a single brush or scraper structure, lacking targeted multi-stage cleaning design. The fine fibers, dust adsorbed by static electricity and other impurities that may be left on the glazing paper for medical purposes before coating cannot be completely removed by one-time cleaning, and the internal space of the equipment is closed, so the operator cannot conveniently disassemble, clean or replace the cleaning assembly, and the impurities accumulated in the cleaning component itself will further contaminate the paper surface after long-term use.
[0005] In addition, the gap adjustment mechanism between the transmission roller set and the cleaning assembly of the equipment is simple, and mostly relies on manual fine adjustment, which is not only time-consuming and laborious, but also difficult to ensure the uniformity of the gap. For medical glazing paper with a width of 600-1200mm, the cleaning of the edge part often becomes a weak link, and the edge residual impurities caused by inconsistent gap further affect the uniformity of subsequent coating, increasing the product rejection rate.
[0006] These design defects make the existing equipment unable to efficiently and stably complete the cleaning of the surface of glazing paper for medical purposes, increasing the labor maintenance cost and making it difficult to meet the stringent cleanliness requirements of medical packaging materials. The present application provides a glazing paper coating production equipment for medical purposes to solve the problems raised in the background art. SUMMARY
[0007] In order to solve the problems raised in the background art, the present application provides a glazing paper coating production equipment for medical purposes.
[0008] The application provides a medicine glargine paper coating production equipment which adopts the technical scheme as follows:
[0009] The application provides a medicine glargine paper coating production equipment which adopts the technical scheme as follows: A medicine glargine paper coating production equipment comprises a coating machine box, an upper end of the coating machine box is connected with a liquid storage tank, an upper end of the liquid storage tank is connected with a liquid inlet pipe, one side of the coating machine box is provided with a cleaning assembly, the cleaning assembly comprises a cleaning box, a long plate is fixedly installed at an upper end of the cleaning box close to a central position, fan boxes are arranged at both sides of the long plate, a rectangular through slot is formed in one side of the cleaning box, and a scraper is arranged in the rectangular through slot.
[0010] Preferably, an electric push rod is fixedly connected to the upper end of the scraper, and a threaded sliding block is fixedly installed at the top of the electric push rod.
[0011] Preferably, a groove is formed in the lower end of the long plate, a threaded rod is arranged in the groove, and the threaded rod is threadedly connected with the threaded sliding block.
[0012] Preferably, a rotating motor is fixedly installed at one end of the threaded rod, and a through slot matched with the groove is formed in the inner top end of the rectangular through slot.
[0013] Preferably, a guide plate is connected to one side of the rectangular through slot, a driving pipe is movably installed in the guide plate, and ultraviolet disinfection lamps are fixedly installed on the upper and lower inner walls of the guide plate.
[0014] Preferably, a drawer plate is arranged outside the cleaning box, a water tank is connected to the inside of the drawer plate and penetrates through the inside of the cleaning box, and an ultrasonic cleaner is connected to the outside of the water tank.
[0015] Preferably, a coating hole is formed in the inside of the coating machine box, the coating hole is connected with the guide plate, a cloth guide pipe is connected to the other end of the coating hole, guide rollers are movably installed in the inside of the coating hole close to both sides, and a blower is fixedly installed at the inner top end of the coating hole.
[0016] Preferably, a drainage block is fixedly installed in the inside of the coating hole, a coating roller is movably embedded in the lower end of the drainage block, and rollers are arranged at the edges of the coating roller and the drainage block.
[0017] Preferably, a drainage pipe is fixedly installed in the inside of the drainage block, a guide rod is arranged in the inside of the drainage pipe, and a sealing plug is fixedly installed at the upper end of the guide rod.
[0018] Preferably, the sealing plug is arranged at the bottom end of the liquid storage tank.
[0019] In summary, the present application includes the following beneficial technical effects: by setting the cleaning assembly, the scraper moves accurately to the water tank under the control of the electric push rod and the threaded rod, and then the electric push rod is elongated to immerse the scraper in water. After starting the ultrasonic cleaner, the high-frequency vibration generated by the ultrasonic cleaner can deeply remove stubborn impurities attached to the surface of the scraper, avoiding secondary pollution caused by incomplete manual cleaning. After cleaning, the scraper is reset to the rectangular through slot through reverse movement, waiting for the next cleaning operation. In this process, the ultraviolet disinfection lamp in the guide plate will perform secondary sterilization on the paper after scraping, and the airflow generated by the fan box can quickly dry the trace amount of water on the surface of the paper, ensuring that the glassine paper entering the coating link meets the medical-grade clean standard;
[0020] When the glassine paper is conveyed along the guide roller to the inside of the coating hole, the paper will accurately reach the lower side of the coating roller. As the paper continues to feed, its own tension and thickness will lift the coating roller upward, and the coating roller will slide upward along the inner wall of the drainage block through the edge roller, thereby pushing the coating roller embedded in the lower end of the drainage block to rise synchronously. This rising action will drive the guide rod connected to the upper end of the coating roller to move upward, so that the sealing plug at the top end of the guide rod is separated from the bottom end of the liquid storage tank, thereby unsealing the outlet of the liquid storage tank. At this time, the coating liquid in the liquid storage tank flows downward through the drainage pipe inside the drainage block under the action of gravity, and uniformly drops on the surface of the coating roller. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a schematic diagram of the overall structure of a glassine paper coating production equipment for medical use in the embodiment of the present application;
[0022] Figure 2 is a schematic diagram of the cleaning assembly structure of a glassine paper coating production equipment for medical use in the embodiment of the present application;
[0023] Figure 3 is a schematic diagram of the long plate structure of a glassine paper coating production equipment for medical use in the embodiment of the present application;
[0024] Figure 4 is a schematic diagram of the guide plate structure of a glassine paper coating production equipment for medical use in the embodiment of the present application;
[0025] Figure 5 is a schematic diagram of the internal structure of the coating machine box of a glassine paper coating production equipment for medical use in the embodiment of the present application.
[0026] Figure 6 is a schematic diagram of the water tank structure of a glassine paper coating production equipment for medical use in the embodiment of the present application
[0027] Figure 7 is a schematic diagram of the Figure 5Enlarged view at A.
[0028] BRIEF DESCRIPTION OF DRAWINGS 1, coating machine box; 2, cleaning assembly; 3, liquid storage tank; 4, liquid inlet pipe; 5, cloth guide pipe; 6, cleaning box; 7, guide plate; 8, drawer plate; 9, scraper; 10, electric push rod; 11, long plate; 12, fan box; 13, rectangular through slot; 14, groove; 15, threaded rod; 16, rotating motor; 17, threaded slide block; 18, drive pipe; 19, coating hole; 20, guide roller; 21, coating roller; 22, roller; 23, air blower; 24, ultrasonic cleaner; 25, drainage pipe; 26, guide rod; 27, sealing plug; 28, ultraviolet disinfection lamp; 29, drainage block; 30, water tank. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application are further described in detail below with reference to the embodiments and drawings.
[0030] Herein, the illustrative embodiments of the present application and the description thereof are used to explain the present application, but are not as a limitation of the present application.
[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0032] It should be understood that the terms "including", "including", "consisting of" or any other variant are intended to cover non-exclusive inclusion, so that the product, device, process or method including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes the elements inherent to such product, device, process or method. Without more limitation, the elements defined by the statement "including", "consisting of" do not exclude the presence of other identical elements in the product, device, process or method including the elements.
[0033] It should also be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and should not be understood as limiting the present invention.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0035] like Figures 1-7 As shown, a glassine paper coating production equipment for medical purposes includes a coating machine chassis 1, the upper end of the coating machine chassis 1 is connected to a liquid storage tank 3, the upper end of the liquid storage tank 3 is connected to a liquid inlet pipe 4, a cleaning component 2 is provided on one side of the coating machine chassis 1, the cleaning component 2 includes a cleaning box 6, a long plate 11 is fixedly installed on the upper end of the cleaning box 6 near the center position, and a fan box 12 is provided on both sides of the long plate 11, a rectangular through groove 13 is opened on one side of the cleaning box 6, and a scraper 9 is provided inside the rectangular through groove 13.
[0036] In this embodiment, the upper end of the scraper 9 is fixedly connected to the electric push rod 10 , and the top of the electric push rod 10 is fixedly installed with a threaded slider 17 .
[0037] In this embodiment, a groove 14 is formed at the lower end of the long plate 11 . A threaded rod 15 is disposed inside the groove 14 . The threaded rod 15 is threadedly connected to the threaded slider 17 .
[0038] In this embodiment, a rotating motor 16 is fixedly mounted on one end of the threaded rod 15 , and a through slot matching the groove 14 is formed at the inner top of the rectangular through slot 13 .
[0039] In this embodiment, a guide plate 7 is connected to one side of the rectangular through groove 13 , a driving tube 18 is movably installed inside the guide plate 7 , and ultraviolet disinfection lamps 28 are fixedly installed on the upper and lower inner walls of the guide plate 7 .
[0040] In this embodiment, a drawer plate 8 is provided on the outside of the cleaning box 6 , the inner side of the drawer plate 8 passes through the interior of the cleaning box 6 and is connected to a water tank 30 , and the outside of the water tank 30 is connected to an ultrasonic cleaner 24 .
[0041] When the glassine paper enters the cleaning box 6, the surface scraping work is first completed through the rectangular through slot 13. The scraper 9 is the core cleaning component, and its height can be flexibly adjusted through the electric push rod 10 to ensure that the surface of the glassine paper with different thicknesses (25-60 μm) forms an adaptive pressure. At the same time, the rotating motor 16 drives the threaded rod 15 to rotate, and the threaded sliding block 17 moves horizontally along the groove 14 at the lower end of the long plate 11, so that the scraper 9 can slide uniformly along the width direction (600-1200 mm) of the paper, completely scraping off the fine fibers, dust and coating impurities remaining on the surface, and avoiding the edge cleaning blind area caused by fixed position scraping. After the scraping is completed, the cleaning and maintenance of the scraper 9 is realized through the water tank 30 and the ultrasonic cleaner 24. The operator can pull out the external drawer plate 8, so that the water tank 30 connected on the inside is exposed outside the cleaning box 6. At this time, the scraper 9 is accurately moved to the upper side of the water tank 30 under the linkage control of the electric push rod 10 and the threaded rod 15, and then the electric push rod 10 is elongated to immerse the scraper 9 in water. After the ultrasonic cleaner 24 is started, the high-frequency vibration generated by the ultrasonic cleaner 24 can deeply remove stubborn impurities attached to the surface of the scraper, avoiding secondary pollution caused by incomplete manual cleaning. After cleaning is completed, the scraper 9 is reset to the rectangular through slot 13 through reverse movement, waiting for the next cleaning operation. In this process, the ultraviolet disinfection lamp 28 in the guide plate 7 will perform secondary sterilization on the paper after scraping, and the airflow generated by the fan box 12 can quickly dry the trace amount of water on the surface of the paper, ensuring that the glassine paper entering the coating link meets the medical grade clean standard.
[0042] In the embodiment, the coating hole 19 is arranged in the coating machine box 1, the coating hole 19 is connected with the guide plate 7, the other end is connected with the cloth guide pipe 5, the inside of the coating hole 19 is movably arranged with the guide roller 20 near the two sides, and the top end of the inside of the coating hole 19 is fixedly arranged with the air blower 23.
[0043] In the embodiment, the inside of the coating hole 19 is fixedly arranged with the flow guide block 29, the lower end of the flow guide block 29 is movably embedded with the coating roller 21, and the edge of the coating roller 21 and the flow guide block 29 is provided with the roller 22.
[0044] In the embodiment, the inside of the flow guide block 29 is fixedly arranged with the flow guide pipe 25, the inside of the flow guide pipe 25 is provided with the guide rod 26, and the upper end of the guide rod 26 is fixedly arranged with the sealing plug 27.
[0045] In the embodiment, the sealing plug 27 is arranged at the bottom end of the liquid storage tank 3.
[0046] The glassine paper processed by the cleaning assembly 2 enters the coating hole 19 inside the coating machine box 1 through the guide plate 7, and the coating operation is completed here. When the glassine paper is conveyed to the inside of the coating hole 19 along the guide roller 20, the paper will accurately reach the lower side of the coating roller 21. As the paper continues to feed, its own tension and thickness will push the coating roller 21 upwards. The coating roller 21 slides upwards along the inner wall of the guide block 29 through the edge roller 22, thereby pushing the coating roller 21 embedded at the lower end of the guide block 29 to rise synchronously. This rising action drives the guide rod 26 connected to the upper end of the coating roller 21 to move upwards, causing the sealing plug 27 at the top end of the guide rod 26 to disengage from the bottom end of the liquid storage tank 3, thereby unsealing the outlet of the liquid storage tank 3. At this time, the coating liquid in the liquid storage tank 3 flows downward through the drainage pipe 25 inside the guide block 29 under the action of gravity, and uniformly drops onto the surface of the coating roller 21. Since the coating roller 21 is in close contact with the surface of the glassine paper and rotates synchronously with the paper conveying, the coating liquid absorbed on the surface of the coating roller 21 will be uniformly transferred to the area to be coated on the glassine paper. At the same time, the arc-shaped structure of the guide block 29 can guide the coating liquid to be evenly distributed along the roller surface, and the stable control of the pressure of the roller 22 on the coating roller 21 ensures the uniformity of the coating thickness. After coating is completed, the blower 23 at the top end of the coating hole 19 will blow clean airflow to quickly dry the paper surface that has just completed coating, avoiding the influence of coating liquid flow on the uniformity of the coating layer. Finally, the glassine paper that has completed coating is conveyed to the next process through the guide pipe 5, and the entire process realizes the cooperative operation of on-demand liquid outflow, precise coating and immediate drying, meeting the strict requirements of glassine paper for medical use on coating uniformity and cleanliness.
[0047] The implementation principle of the pharmaceutical use glaracin paper coating production equipment embodiment is as follows: firstly, when the glaracin paper enters the cleaning box 6, the surface scraping work is completed through the rectangular through slot 13. The scraper 9 is the core cleaning component, the height of which can be flexibly adjusted through the electric push rod 10 to ensure that the surface of the glaracin paper with different thicknesses (25-60 μm) forms an adaptive pressure. At the same time, the rotating motor 16 drives the threaded rod 15 to rotate, drives the threaded sliding block 17 to move horizontally along the groove 14 at the lower end of the long plate 11, so that the scraper 9 can slide uniformly along the width direction (600-1200 mm) of the paper, completely scrape off the fine fibers, dust and coating impurities remaining on the surface, and avoid the edge cleaning blind area caused by fixed position scraping. After the scraping is completed, the cleaning and maintenance of the scraper 9 is realized by the water tank 30 and the ultrasonic cleaner 24. The operator can pull out the external drawer plate 8, so that the water tank 30 connected on the inside is exposed outside the cleaning box 6. At this time, the scraper 9 is accurately moved to the upper side of the water tank 30 under the linkage control of the electric push rod 10 and the threaded rod 15, and then the electric push rod 10 is elongated to immerse the scraper 9 in water. After the ultrasonic cleaner 24 is started, the high-frequency vibration generated by the ultrasonic cleaner 24 can deeply remove stubborn impurities attached to the surface of the scraper, avoiding secondary pollution caused by incomplete manual cleaning. After cleaning is completed, the scraper 9 is reset to the rectangular through slot 13 through reverse movement, waiting for the next cleaning operation. In this process, the ultraviolet disinfection lamp 28 in the guide plate 7 can perform secondary sterilization on the paper after scraping, and the airflow generated by the fan box 12 can quickly dry the trace amount of water on the surface of the paper, so that the glaracin paper entering the coating link meets the medical grade clean standard. The glaracin paper processed by the cleaning assembly 2 enters the coating hole 19 in the coating machine box 1 through the guide plate 7, and the coating work is completed here. When the glaracin paper is conveyed to the inside of the coating hole 19 along the guide roller 20, the paper will accurately reach the lower side of the coating roller 21. As the paper continues to feed, its own tension and thickness will lift the coating roller 21 upwards. The coating roller 21 slides upwards along the inner wall of the drainage block 29 through the edge roller 22, thereby pushing the coating roller 21 embedded at the lower end of the drainage block 29 to rise synchronously. This rising action drives the guide rod 26 connected to the upper end of the coating roller 21 to move upwards, so that the sealing plug 27 at the top of the guide rod 26 is separated from the bottom end of the liquid storage tank 3, thereby unsealing the outlet of the liquid storage tank 3. At this time, the coating liquid in the liquid storage tank 3 flows downwards through the drainage pipe 25 in the drainage block 29 under the action of gravity, and is uniformly dropped on the surface of the coating roller 21. Since the coating roller 21 is in close contact with the surface of the glaracin paper and rotates synchronously with the paper conveying, the coating liquid absorbed on the surface of the coating roller 21 will be uniformly transferred to the glaracin paper to be coated.At the same time, the arc-shaped structure of the drainage block 29 can guide the coating liquid to be evenly distributed along the roller surface, and cooperate with the stable control of the pressure of the roller 22 on the coating roller 21 to ensure the uniformity of the coating thickness. After the coating is completed, the air blower 23 at the top end inside the coating hole 19 will blow clean airflow to quickly dry the paper surface just completed coating, avoiding the influence of coating liquid flow on the uniformity of the coating. Finally, the coated glassine paper is conveyed to the next process through the guide pipe 5, and the whole process realizes the cooperative operation of the on-demand flow of the coating liquid, accurate coating and instant drying, and meets the strict requirements of the glassine paper for medical use on the uniformity and cleanliness of the coating.
[0048] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;
[0049] Secondly: the present application discloses the structure involved in the embodiment of the present application, and other structures can refer to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;
[0050] Finally: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A glassine paper coating production device for medical use, comprising a coating machine box (1), the upper end of the coating machine box (1) is connected to a liquid storage tank (3), the upper end of the liquid storage tank (3) is connected to a liquid inlet pipe (4), and a cleaning component (2) is provided on one side of the coating machine box (1), characterized in that: The cleaning assembly (2) comprises a cleaning box (6), a long plate (11) is fixedly mounted on the upper end of the cleaning box (6) near the center, a fan box (12) is provided on both sides of the long plate (11), a rectangular through slot (13) is provided on one side of the cleaning box (6), and a scraper (9) is provided inside the rectangular through slot (13).
2. The glassine paper coating production equipment for medical use according to claim 1, characterized in that: The upper end of the scraper (9) is fixedly connected to an electric push rod (10), and a threaded slider (17) is fixedly installed on the top of the electric push rod (10).
3. The medical glassine paper coating production equipment according to claim 2, characterized in that: A groove (14) is provided at the lower end of the long plate (11), a threaded rod (15) is provided inside the groove (14), and the threaded rod (15) is threadedly connected to the threaded slider (17).
4. The medical glassine paper coating production equipment according to claim 3, characterized in that: A rotating motor (16) is fixedly mounted on one end of the threaded rod (15), and a through slot matching the groove (14) is provided at the inner top end of the rectangular through slot (13).
5. The medical glassine paper coating production equipment according to claim 4, characterized in that: A guide plate (7) is connected to one side of the rectangular through groove (13), a driving tube (18) is movably mounted inside the guide plate (7), and ultraviolet disinfection lamps (28) are fixedly mounted on the upper and lower inner walls of the guide plate (7).
6. The glassine paper coating production equipment for medical use according to claim 1, characterized in that: A drawer plate (8) is provided on the outside of the cleaning box (6), the inner side of the drawer plate (8) passes through the interior of the cleaning box (6) and is connected to a water tank (30), and the outside of the water tank (30) is connected to an ultrasonic cleaner (24).
7. The glassine paper coating production equipment for medical use according to claim 1, characterized in that: A coating hole (19) is provided inside the coating machine box (1), the coating hole (19) is connected to the guide plate (7), and the other end is connected to the cloth guide tube (5), and guide rollers (20) are movably installed near both sides of the coating hole (19), and a blower (23) is fixedly installed at the top of the coating hole (19).
8. The glassine paper coating production equipment for medical use according to claim 7, characterized in that: A drainage block (29) is fixedly installed inside the coating hole (19), a coating roller (21) is movably embedded in the lower end of the drainage block (29), and rollers (22) are provided on the edges of the coating roller (21) and the drainage block (29).
9. The glassine paper coating production equipment for medical use according to claim 1, characterized in that: A drainage tube (25) is fixedly installed inside the drainage block (29), a guide rod (26) is provided inside the drainage tube (25), and a sealing plug (27) is fixedly installed on the upper end of the guide rod (26).
10. The glassine paper coating production equipment for medical use according to claim 9, characterized in that: The sealing plug (27) is arranged at the bottom end of the liquid storage tank (3).