Filling device for eye wash production
By designing the lifting frame and reflux assembly, the problem of liquid dripping from the syringe was solved, achieving a highly efficient and low-pollution eyewash filling process, and improving filling efficiency and quality consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN BOQING BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-17
AI Technical Summary
In existing liquid filling equipment, eyewash solution left in the syringe is prone to dripping, causing contamination of the packaging bottle and filling table, and also resulting in waste of eyewash solution.
The system uses a lifting frame to insert the syringe into the packaging bottle, combined with a liquid pump and solenoid valve to control the filling of eye wash solution. A reflux assembly is used to remove residual liquid in the syringe through negative pressure. The adjustable syringe spacing and positioning plate are combined to adapt to different bottle types, achieving efficient filling and reducing dripping.
It effectively reduces the possibility of eyewash dripping from the syringe, reduces contamination and waste, and improves filling efficiency and quality consistency.
Smart Images
Figure CN224131452U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of liquid filling equipment technology, and in particular to a filling device for producing eyewash solution. Background Technology
[0002] Eye wash solution is a solution extracted and mixed from various raw materials. After production, the eye wash solution needs to be filled into prepared packaging for packaging and then sterilized to complete the entire production process. Common liquid filling machines use a syringe that can be inserted into the packaging bottle. The syringe is first inserted into the bottom of the packaging bottle and gradually raised during the filling process to avoid generating too many air bubbles. The filling volume is controlled by the duration of the opening of a pre-controlled solenoid valve.
[0003] However, in actual production, because the syringe is usually long, even if the solenoid valve is closed, the eyewash solution remaining in the syringe may still drip onto the packaging bottle or filling table, which will contaminate the packaging bottle and filling table, thus presenting a shortcoming. Utility Model Content
[0004] In order to improve the problem of eye wash solution remaining in the syringe, this application provides a filling device for eye wash solution production.
[0005] The filling device for producing eye wash solution provided in this application adopts the following technical solution:
[0006] An eye wash filling device includes a filling platform and a control panel. A packaging bottle is placed on the filling platform. A vertical plate is mounted on the top of the filling platform, and a lifting frame is vertically slidable on the vertical plate. A lifting component is mounted on the vertical plate to drive the lifting frame to reciprocate vertically. Multiple vertically aligned needles are arranged on the lifting frame, evenly distributed horizontally. An eye wash tank is mounted on the vertical plate, connected to an intermediate tube. Flexible tubes are connected to the intermediate tubes. An injection pump electrically connected to the control panel is mounted on the intermediate tube. A solenoid valve electrically connected to the control panel is located between the flexible tubes and the needles. A reflux assembly is mounted on the lifting frame for extracting eye wash solution from the needles.
[0007] By adopting the above technical solution, the worker first places the packaging bottle on the filling table, and then the lifting mechanism drives the lifting frame to slide vertically downward. The lifting frame drives the syringe to gradually insert into the packaging bottle. Then, the control panel starts the injection pump and solenoid valve. The eye wash solution in the eye drop tank flows into the packaging bottle in the order of the middle tube, injection pump, tubing and syringe. As the liquid level of the eye wash solution in the packaging bottle continues to rise, the lifting frame is driven to slide vertically upward until a certain amount of eye wash solution is filled into the packaging bottle. Then, the control panel closes the solenoid valve. After that, the reflux component removes the eye wash solution remaining in the syringe. Finally, the worker can transfer the filled packaging bottle. This reduces the possibility of accidental dripping of the eye wash solution remaining in the syringe.
[0008] Optionally, the lifting component includes a slide rail and a lifting cylinder mounted on the upright plate. The lifting cylinder is electrically connected to the control panel. A slider is mounted on the lifting frame. The slider slides in cooperation with the slide rail and is mounted on the piston rod of the lifting cylinder.
[0009] By adopting the above technical solution, the control panel activates the lifting cylinder. Under the combined action of the slide rail and the slider, the piston rod of the lifting cylinder extends and retracts to raise and lower the lifting frame, thereby enabling the syringe to insert into and move away from the packaging bottle.
[0010] Optionally, the reflux assembly includes multiple adjusting blocks arranged on the lifting frame, each adjusting block corresponding to a needle tube. A reflux cylinder with a hollow interior and an open top is detachably mounted on each adjusting block. The diameter of the reflux cylinder is larger than the diameter of the needle tube. The bottom of the reflux cylinder communicates with the needle tube. A rigid tube communicates between the bottom of the reflux cylinder and the flexible tube. The solenoid valve is mounted on the rigid tube. A withdrawal plate is coaxially slidably mounted inside the reflux cylinder. The outer circumferential wall of the withdrawal plate is attached to the inner circumferential wall of the reflux cylinder. The withdrawal plate is located above the connection between the rigid tube and the reflux cylinder. A driving component for sliding the withdrawal plate is mounted on the lifting frame.
[0011] By adopting the above technical solution, when the control panel closes the solenoid valve, the drive component moves the extraction plate towards the opening of the return cylinder, creating a negative pressure on the return cylinder side. This negative pressure draws the eyewash solution remaining in the syringe into the return cylinder. Since the syringe is usually thin and long, and the negative pressure environment created by the extraction plate in the return cylinder prevents the eyewash solution in the return cylinder from flowing back to the syringe, the eyewash solution in the syringe is effectively extracted, thereby reducing the possibility of eyewash solution dripping.
[0012] Optionally, the driving component includes a connecting column disposed on the extraction plate, the connecting column slidingly passing through the adjusting block, and a driving cylinder electrically connected to the control panel is disposed on the lifting frame, the connecting column being arranged on the piston rod of the driving cylinder.
[0013] By adopting the above technical solution, the control panel activates the drive cylinder, and the piston rod of the drive cylinder drives the extraction plate to slide through the connecting column. This creates a negative pressure environment at the bottom of the return cylinder, allowing the eyewash solution remaining in the syringe to be drawn into the return cylinder, reducing the possibility of accidental dripping of the eyewash solution. On the one hand, this reduces the pollution of the filling station environment by dripping eyewash solution, and on the other hand, it reduces the waste of eyewash solution.
[0014] Optionally, the adjusting blocks are slidably arranged on the lifting frame, and the lifting frame has an adjusting groove for the adjusting blocks to slide. A compression spring supports each two adjacent adjusting blocks. A circular plate is coaxially arranged at the end of the connecting column facing away from the extraction plate. The diameter of the circular plate is larger than the diameter of the connecting column. A guide bar is provided on the piston rod of the driving cylinder. A guide groove for the circular plate to slide is provided on the guide bar. An adjusting screw is threadedly connected to the lifting frame. The axis of the adjusting screw is parallel to the arrangement direction of the adjusting blocks. The end of the adjusting screw abuts against the adjusting block. An anti-loosening nut is threadedly connected to the adjusting screw. The anti-loosening nut is used to tighten the lifting frame.
[0015] By adopting the above technical solution, the worker turns the adjusting screw, and the rotating adjusting screw pushes the adjusting block to slide. Under the action of the compression spring, the distance between two adjacent adjusting blocks changes, and the distance between two adjacent adjusting blocks is always the same. During the sliding process of the adjusting block, the adjusting block drives the circular plate to slide synchronously in the guide groove of the guide bar through the connecting column. Finally, the worker tightens the anti-loosening nut to complete the adjustment of the distance between two adjacent syringes. At the same time, the guide bar can make multiple connecting columns slide synchronously, which is conducive to improving the quality consistency of eye wash filling in the same batch of packaging bottles, and at the same time, improving the adaptability to different packaging bottles.
[0016] Optionally, the adjusting screw is provided with a handle.
[0017] By adopting the above technical solution, workers can easily adjust the screw by turning the handle.
[0018] Optionally, a rubber ring is fitted on the extraction plate, which is used to abut against the circumferential inner wall of the return cylinder.
[0019] By adopting the above technical solution, the rubber ring achieves the gap between the outer circumferential wall of the extraction plate and the inner circumferential wall of the return tube through deformation, which is conducive to the extraction plate drawing the bottom of the return tube to form a negative pressure, thereby facilitating the return of the eye wash solution retained in the syringe to the return tube.
[0020] Optionally, a positioning plate can be detachably installed on the filling table. The positioning plate has multiple placement slots, each corresponding to a syringe, and the packaging bottle is placed on the placement slot.
[0021] By adopting the above technical solution, workers can select and install different positioning plates for packaging bottles of different sizes, which makes it easier for workers to quickly place the packaging bottles directly under the syringe, thus improving the filling efficiency of the packaging bottles.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The worker first places the packaging bottle on the filling table. Then, the lifting mechanism drives the lifting frame to slide vertically downwards. The lifting frame drives the syringe to gradually insert into the packaging bottle. Then, the control panel starts the injection pump and solenoid valve. The eye wash solution in the eye drop tank flows into the packaging bottle in the order of the middle tube, injection pump, tubing and syringe. As the liquid level of the eye wash solution in the packaging bottle rises, the lifting frame is driven to slide vertically upwards until a certain amount of eye wash solution is filled into the packaging bottle. Then, the control panel closes the solenoid valve. Then, the reflux component removes the eye wash solution remaining in the syringe. Finally, the worker transfers the filled packaging bottle. This reduces the possibility of the eye wash solution remaining in the syringe accidentally dripping.
[0024] 2. When the control panel closes the solenoid valve, the drive unit moves the extraction plate towards the opening of the return cylinder, creating a negative pressure on the return cylinder side. This negative pressure draws the eyewash solution remaining in the syringe into the return cylinder. Since the syringe is usually thin and long, and the negative pressure environment created by the extraction plate in the return cylinder prevents the eyewash solution in the return cylinder from flowing back to the syringe, the eyewash solution is effectively extracted from the syringe, thus reducing the possibility of eyewash solution dripping.
[0025] 3. The worker turns the adjusting screw, which pushes the adjusting block to slide. Under the action of the compression spring, the distance between two adjacent adjusting blocks changes, and the distance between two adjacent adjusting blocks remains the same. During the sliding process of the adjusting block, the adjusting block drives the circular plate to slide synchronously in the guide groove of the guide bar through the connecting column. Finally, the worker tightens the anti-loosening nut to complete the adjustment of the distance between two adjacent syringes. At the same time, the guide bar can make multiple connecting columns slide synchronously, which helps to improve the quality consistency of eye wash filling in the same batch of packaging bottles, and at the same time, improves the adaptability to different packaging bottles. Attached Figure Description
[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application.
[0027] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate the positional relationship between the reflux cylinder, the connecting column, and the needle tube.
[0028] Explanation of reference numerals in the attached drawings: 1. Packaging bottle; 2. Filling station; 3. Control panel; 4. Vertical plate; 5. Lifting frame; 6. Lifting component; 61. Slide rail; 62. Lifting cylinder; 63. Slider; 7. Syringe; 8. Eye drop tank; 9. Intermediate tube; 10. Tube; 11. Injection pump; 12. Solenoid valve; 13. Reflux assembly; 131. Adjusting block; 132. Reflux cylinder; 133. Rigid tube; 134. Extraction plate; 135. Drive component; 1351. Connecting column; 1352. Drive cylinder; 14. Adjusting groove; 15. Compression spring; 16. Circular plate; 17. Guide bar; 18. Guide groove; 19. Adjusting screw; 20. Anti-loosening nut; 21. Handle; 22. Rubber ring; 23. Positioning plate; 24. Placement groove; 25. Mounting plate. Detailed Implementation
[0029] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.
[0030] This application discloses a filling device for producing eye wash.
[0031] Reference Figure 1 A filling device for producing eye wash includes a filling platform 2 and a control panel 3. The control panel 3 is bolted to the filling platform 2. A positioning plate 23 is bolted to the filling platform 2. The positioning plate 23 has multiple placement slots 24, which correspond one-to-one with syringes 7. The packaging bottle 1 is placed on the placement slot 24. A vertical plate 4 is welded to the top of the filling platform 2. A lifting frame 5 is vertically slidably arranged on the vertical plate 4.
[0032] Reference Figure 1 A lifting component 6 is arranged on the upright plate 4 to drive the lifting frame 5 to slide vertically back and forth. A mounting plate 25 is welded to the top of the upright plate 4. The lifting component 6 includes a slide rail 61 bolted to the upright plate 4 and a lifting cylinder 62 bolted to the mounting plate 25. The lifting cylinder 62 is electrically connected to the control panel 3. A slider 63 is bolted to the lifting frame 5. The slider 63 slides with the slide rail 61 and is bolted to the piston rod of the lifting cylinder 62.
[0033] Reference Figure 1 The lifting frame 5 is equipped with multiple vertical needle tubes 7, which are evenly arranged in the horizontal direction. An eye drop tank 8 is bolted to the top of the mounting plate 25. An intermediate tube 9 is connected to the eye drop tank 8. An injection pump 11, which is electrically connected to the control panel 3, is bolted to the intermediate tube 9. A flexible tube 10 is connected between the multiple needle tubes 7 and the intermediate tube 9. A solenoid valve 12, which is electrically connected to the control panel 3, is arranged between the flexible tube 10 and the needle tubes 7.
[0034] The worker selects and bolts the corresponding size positioning plate 23 to the filling table 2 according to the size of the packaging bottle 1. Then, the worker starts the lifting cylinder 62 through the control panel 3. The piston rod of the lifting cylinder 62 extends and, under the guidance of the slide rail 61, the lifting frame 5 drives the needle tube 7 to slide vertically downward until the needle tube 7 is inserted into the packaging bottle 1. At this time, the control panel 3 starts the injection pump 11 and the solenoid valve 12.
[0035] The eye wash solution in the eye drop tank 8 flows sequentially through the intermediate tube 9, the injection pump 11, the tubing 10, the solenoid valve 12, and the syringe 7 into the packaging bottle 1. The liquid level of the eye wash solution in the packaging bottle 1 rises continuously. At the same time, the piston rod of the lifting cylinder 62 retracts, and the lifting frame 5 drives the syringe 7 to slide vertically upward. The syringe 7 continuously detaches from the packaging bottle 1 until the liquid level in the packaging bottle 1 reaches the design requirement. At this time, the control panel 3 stops the injection pump 11 and the solenoid valve 12.
[0036] Reference Figure 1 and Figure 2 The lifting frame 5 is equipped with a reflux assembly 13, which is used to extract the eye wash solution in the syringe 7. The reflux assembly 13 includes multiple adjusting blocks 131 that are slidably arranged on the lifting frame 5. Each adjusting block 131 corresponds to a syringe 7. The lifting frame 5 is provided with an adjusting groove 14 for the adjusting blocks 131 to slide. Each adjacent adjusting block 131 is supported by a compression spring 15.
[0037] Reference Figure 1 and Figure 2 The bottom of the adjusting block 131 is bolted with a hollow reflux cylinder 132 with an open top. The diameter of the reflux cylinder 132 is larger than the diameter of the needle tube 7. The bottom of the reflux cylinder 132 is connected to the top of the needle tube 7. A rigid tube 133 is connected between the bottom of the reflux cylinder 132 and the flexible tube 10. The solenoid valve 12 is bolted to the rigid tube 133.
[0038] Reference Figure 1 and Figure 2 A separation plate 134 is coaxially slidably arranged inside the reflux cylinder 132. The outer circumferential wall of the separation plate 134 is attached to the inner circumferential wall of the reflux cylinder 132. A rubber ring 22 is fitted on the separation plate 134. The rubber ring 22 can be made of rubber material. The rubber ring 22 is used to abut against the inner circumferential wall of the reflux cylinder 132. The separation plate 134 is located above the connection between the rigid tube 133 and the reflux cylinder 132.
[0039] Reference Figure 1 and Figure 2 The lifting frame 5 is equipped with a driving component 135 for driving the extraction plate 134 to slide. The driving component 135 includes a connecting column 1351 welded to the extraction plate 134. The connecting column 1351 slides vertically through the adjusting block 131. A circular plate 16 is coaxially welded to one end of the connecting column 1351 facing away from the extraction plate 134. The diameter of the circular plate 16 is larger than the diameter of the connecting column 1351.
[0040] Reference Figure 1 and Figure 2 The lifting frame 5 is bolted with a drive cylinder 1352 that is electrically connected to the control panel 3. A guide bar 17 is bolted to the piston rod of the drive cylinder 1352. The guide bar 17 has a guide groove 18 for the circular plate 16 to slide. An adjusting screw 19 is threaded onto the lifting frame 5.
[0041] Reference Figure 1 and Figure 2 A handle 21 is welded onto the adjusting screw 19. The axis of the adjusting screw 19 is parallel to the arrangement direction of the adjusting blocks 131. The end of the adjusting screw 19 abuts against the adjusting block 131. A lock nut 20 is threaded onto the adjusting screw 19. The lock nut 20 is used to tighten the lifting frame 5.
[0042] After the worker places the packaging bottle 1, the worker first turns the handle 21, which drives the adjusting screw 19 to rotate. The rotating adjusting screw 19 pushes the adjusting block 131 to slide, and the adjusting block 131 drives the needle tube 7 to slide synchronously. Since the elastic properties of the compression spring 15 tend to be consistent, the distance between two adjacent adjusting blocks 131 is always consistent under the action of the compression spring 15, so that the needle tube 7 can be aligned with the bottle mouth of the packaging bottle 1. Then the worker tightens the anti-loosening nut 20.
[0043] Once the eyewash solution in the packaging bottle 1 reaches the design requirements, and the injection pump 11 and solenoid valve 12 stop working, the control panel 3 activates the drive cylinder 1352. The piston rod of the drive cylinder 1352 retracts, and the piston rod of the drive cylinder 1352 drives the circular plate 16 to slide vertically upward through the guide bar 17. The circular plate 16 drives the extraction plate 134 to slide synchronously through the connecting column 1351. At this time, a negative pressure is formed at the bottom of the return cylinder 132, and the eyewash solution retained in the syringe 7 is drawn into the return cylinder 132.
[0044] After the worker replaces the new packaging bottle 1, the control panel 3 activates the drive cylinder 1352. The piston rod of the drive cylinder 1352 pushes the extraction plate 134 to reset through the guide bar 17 and the connecting column 1351. The eye wash solution in the return cylinder 132 is pushed back into the syringe 7. Then the control panel 3 activates the lifting cylinder 62, the injection pump 11 and the solenoid valve 12. The operation can be repeated.
[0045] The implementation principle of the eyewash filling device in this application embodiment is as follows: The worker selects and bolts the corresponding size positioning plate 23 to the filling table 2 according to the size of the packaging bottle 1. The worker first turns the handle 21, which drives the adjusting screw 19 to rotate. The rotating adjusting screw 19 pushes the adjusting block 131 to slide. The adjusting block 131 drives the needle tube 7 to slide synchronously. Since the elastic properties of the compression spring 15 tend to be consistent, the distance between two adjacent adjusting blocks 131 is always consistent under the action of the compression spring 15, so that the needle tube 7 can be aligned with the bottle mouth of the packaging bottle 1. Finally, the worker tightens the anti-loosening nut 20.
[0046] The worker starts the lifting cylinder 62 through the control panel 3. The piston rod of the lifting cylinder 62 extends and, guided by the slide rail 61, the lifting frame 5 drives the needle tube 7 to slide vertically downward until the needle tube 7 is inserted into the packaging bottle 1. At this time, the control panel 3 starts the injection pump 11 and the solenoid valve 12.
[0047] The eye wash solution in the eye drop tank 8 flows sequentially through the intermediate tube 9, the injection pump 11, the tubing 10, the solenoid valve 12, and the syringe 7 into the packaging bottle 1. The liquid level of the eye wash solution in the packaging bottle 1 rises continuously. At the same time, the piston rod of the lifting cylinder 62 retracts, and the lifting frame 5 drives the syringe 7 to slide vertically upward. The syringe 7 continuously detaches from the packaging bottle 1 until the liquid level in the packaging bottle 1 reaches the design requirement. At this time, the control panel 3 stops the injection pump 11 and the solenoid valve 12.
[0048] Worker control panel 3 starts drive cylinder 1352, drive cylinder 1352 piston rod retracts, drive cylinder 1352 piston rod drives circular plate 16 to slide vertically upward through guide bar 17, circular plate 16 drives extraction plate 134 to slide synchronously through connecting column 1351, at this time negative pressure is formed at the bottom of return cylinder 132, eye wash fluid retained in syringe 7 is drawn into return cylinder 132.
[0049] After the worker replaces the new packaging bottle 1, the control panel 3 activates the drive cylinder 1352. The piston rod of the drive cylinder 1352 pushes the extraction plate 134 to reset through the guide bar 17 and the connecting column 1351. The eye wash solution in the return cylinder 132 is pushed back into the syringe 7. Then the control panel 3 activates the lifting cylinder 62, the injection pump 11 and the solenoid valve 12. The operation can be repeated.
[0050] 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 filler for producing an eye wash solution, characterized by: The system includes a filling station (2) and a control panel (3). A packaging bottle (1) is placed on the filling station (2). A vertical plate (4) is installed on the top of the filling station (2). A lifting frame (5) is vertically slidably mounted on the vertical plate (4). A lifting component (6) is installed on the vertical plate (4) to drive the lifting frame (5) to slide vertically back and forth. Multiple vertically aligned needles (7) are arranged on the lifting frame (5), and these needles (7) are evenly distributed horizontally. An eye drop tank (8) is installed on the vertical plate (4). The eye drop tank (8) is connected to an intermediate tube (9), and multiple needle tubes (7) are connected to the intermediate tube (9) by a flexible tube (10). The intermediate tube (9) is equipped with an injection pump (11) electrically connected to the control panel (3). The flexible tube (10) and the needle tube (7) are connected to a solenoid valve (12) electrically connected to the control panel (3). The lifting frame (5) is equipped with a reflux assembly (13), which is used to extract the eye wash solution from the needle tube (7).
2. The filling device for producing an eye wash solution according to claim 1, characterized in that: The lifting component (6) includes a slide rail (61) and a lifting cylinder (62) disposed on the upright plate (4). The lifting cylinder (62) is electrically connected to the control panel (3). A slider (63) is disposed on the lifting frame (5). The slider (63) is slidably engaged with the slide rail (61). The slider (63) is disposed on the piston rod of the lifting cylinder (62).
3. The filling device for producing an eye wash solution according to claim 1, characterized in that: The reflux assembly (13) includes multiple adjusting blocks (131) arranged on the lifting frame (5). Each adjusting block (131) corresponds to a needle tube (7). A reflux cylinder (132) with a hollow interior and an open top is detachably provided on each adjusting block (131). The diameter of the reflux cylinder (132) is larger than the diameter of the needle tube (7). The bottom of the reflux cylinder (132) is connected to the needle tube (7), and the bottom of the reflux cylinder (132) is connected to the flexible tube (10). There is a rigid tube (133), the solenoid valve (12) is disposed on the rigid tube (133), and an extraction plate (134) is coaxially slidably disposed inside the return cylinder (132). The outer circumferential wall of the extraction plate (134) is attached to the inner circumferential wall of the return cylinder (132). The extraction plate (134) is located above the connection between the rigid tube (133) and the return cylinder (132). The lifting frame (5) is provided with a driving member (135) for driving the extraction plate (134) to slide.
4. The filling device for producing an eye wash solution according to claim 3, characterized in that: The drive unit (135) includes a connecting column (1351) disposed on the extraction plate (134), the connecting column (1351) sliding through the adjustment block (131), and a drive cylinder (1352) electrically connected to the control panel (3) is disposed on the lifting frame (5), the connecting column (1351) being arranged on the piston rod of the drive cylinder (1352).
5. A filling device for producing eyewash solution according to claim 4, characterized in that: The adjusting block (131) is slidably arranged on the lifting frame (5). The lifting frame (5) is provided with an adjusting groove (14) for the adjusting block (131) to slide. A compression spring (15) is provided between each two adjacent adjusting blocks (131). A circular plate (16) is coaxially provided on the end of the connecting column (1351) facing away from the extraction plate (134). The diameter of the circular plate (16) is larger than the diameter of the connecting column (1351). The piston rod of the driving cylinder (1352) is provided with... A guide bar (17) is provided, and a guide groove (18) is provided on the guide bar (17) for the circular plate (16) to slide. An adjusting screw (19) is threadedly connected to the lifting frame (5). The axis of the adjusting screw (19) is parallel to the arrangement direction of the adjusting block (131). The end of the adjusting screw (19) abuts against the adjusting block (131). An anti-loosening nut (20) is threadedly connected to the adjusting screw (19). The anti-loosening nut (20) is used to tighten the lifting frame (5).
6. The filling device for producing an eye wash solution according to claim 5, characterized in that: A handle (21) is provided on the adjusting screw (19).
7. The filling device for producing an eye wash solution according to claim 3, characterized in that: A rubber ring (22) is fitted on the extraction plate (134), and the rubber ring (22) is used to abut against the circumferential inner wall of the return cylinder (132).
8. The filling device for producing an eye wash solution according to claim 1, wherein: The filling station (2) is detachably provided with a positioning plate (23), and the positioning plate (23) is provided with multiple placement slots (24). The placement slots (24) correspond one-to-one with the syringe (7), and the packaging bottle (1) is placed on the placement slots (24).