Device and method for preparing contact lens care solution containing sodium hyaluronate
By designing a preparation device, including a configuration box, infusion device, collection device, stirring device and controller, the problem of difficulty in ensuring stability and uniformity of sodium hyaluronate during the preparation of contact lens care liquid is solved, and nursing is achieved The stable preparation and uniformity of the liquid improve the effect of the care liquid.
Patent Information
- Application Number
- CN202411633960.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the preparation process of existing contact lens care solution containing sodium hyaluronate, the stability of sodium hyaluronate is affected by temperature and pH, and it is difficult to ensure accurate addition and uniform stirring, which can easily lead to uneven distribution of ingredients and affect the care solution. effect.
A contact lens care solution preparation device containing sodium hyaluronate is designed, including a configuration box, infusion device, collection device, stirring device and controller. By accurately controlling the conveying and stirring of solvents, the stability of sodium hyaluronate is ensured. and uniformity of ingredients.
The stable preparation of sodium hyaluronate is achieved, ensuring the moisturizing and lubricating functions of the care solution, avoiding the problem of uneven distribution of ingredients, and improving the performance stability of the care solution.
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Figure CN119425491A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of contact lens care solution, and more specifically, to a device and method for preparing a contact lens care solution containing sodium hyaluronate. Background Art
[0002] With the increase in the number of myopic people and people's pursuit of beauty and convenience, the market share of corneal contact lenses (contact lenses) has increased year by year, and more and more people choose to wear contact lenses, which has increased the demand for contact lens care solutions accordingly. Contact lenses are directly attached to the tear layer of the cornea. Long-term wearing can easily cause various eye problems. If not properly cared for, it can easily cause acute and chronic conjunctivitis, corneal epithelial exfoliation, giant papillary conjunctivitis, sterile corneal infiltration, scars and neovascularization, etc. The most serious is infectious keratitis. Therefore, efficient and safe care solutions are needed to ensure the cleanliness of contact lenses and eye health.
[0003] When preparing the existing care solutions containing sodium hyaluronate, the stability of sodium hyaluronate may be affected under different environmental conditions such as temperature, pH value, etc. During the preparation process, if the temperature is too high or the pH value is inappropriate, the structure of sodium hyaluronate may change, thereby affecting its moisturizing and lubricating functions. At the same time, accurate addition of each component solvent is also the key to preparing high-quality care solutions, especially for ingredients with small addition amounts such as sodium hyaluronate, which require high weighing accuracy. Therefore, it is necessary to accurately control the configuration amount of sodium hyaluronate. At the same time, during the preparation process, various ingredients need to be fully stirred to ensure the stable performance of the care solution. However, for some care solutions with higher viscosity, the stirring uniformity may be difficult to ensure, and uneven distribution of ingredients may occur, affecting the effect of the care solution.
[0004] Therefore, it is necessary to redesign a device and method for preparing a contact lens care solution containing sodium hyaluronate in view of the above problems. Summary of the invention
[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a device and method for preparing a contact lens care solution containing sodium hyaluronate.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A device for preparing a contact lens care solution containing sodium hyaluronate comprises a configuration box, a second liquid level gauge is provided on one side of the configuration box, an installation cavity is opened in the configuration box, a condenser is fixedly installed in the installation cavity, one end of the condenser passes through the inner wall of the installation cavity and extends outward to be installed with a controller, and the controller is fixedly installed on one side of the configuration box, an infusion device is fixedly installed on each side of the configuration box, and the output end of the infusion device is connected to the configuration box, one side of the configuration box is fixedly connected to a collecting device, two installation shafts are symmetrically fixedly connected to the output end of the collecting device, and the installation shaft is rotatably connected to the output end of the collecting device, one end of each of the installation shafts is fixedly connected to a fixing plate, and one side of each of the fixing plates is connected to the output end of the collecting device. A torsion spring is fixedly connected with the two torsion springs, and the two torsion springs are respectively sleeved on the outer wall of the mounting shaft at the corresponding position. A second baffle is fixedly installed on one side of each of the fixing plates, and the two second baffles are respectively abutted against one side of the filter plate at the corresponding position. Two card slots are symmetrically provided on both sides of the configuration box, and a sealing groove is provided on the upper end surface of the configuration box, and each card slot is communicated with the sealing groove. A sealing block is engaged in the sealing groove, and two limiting grooves are symmetrically provided on both sides of the sealing block, and a second spring is fixedly connected in each of the limiting grooves, and one end of each of the second springs is fixedly connected to a limiting rod, and the limiting rod is slidably clamped in the limiting groove, and one end of the limiting rod away from the second spring is inserted in the corresponding card slot; a cover plate is fixedly installed on the upper end surface of the sealing block; A first mounting frame is fixedly mounted on the upper end surface of the cover plate, a first motor is fixedly mounted on the first mounting frame, a second mounting frame is fixedly mounted on one side of the cover plate, a second motor is fixedly mounted on the second mounting frame, a slide groove is provided on the lower end surface of the cover plate, a driving device is provided in the slide groove, and an output shaft of the second motor is connected to an output end of the driving device, a stirring device is provided on the output end of the driving device, and the output end of the stirring device contacts the inner side wall of the configuration box, an auxiliary stirring device is provided on the lower end surface of the cover plate, and the output shaft of the first motor is connected to the output end of the auxiliary stirring device, a scraping device is connected to the output end of the auxiliary stirring device, and the output end of each scraping device contacts the inner side wall of the configuration box, a plurality of fixed rods are symmetrically fixedly mounted on the lower end surface of the cover plate, and the output end of the scraping device is slidably connected to the outer wall of the fixed rod corresponding to the position, a first stopper is commonly fixedly mounted on the lower end surfaces of the plurality of fixed rods, and the output end of the scraping device passes through the first stopper and extends to the inner bottom wall of the configuration box, and a through groove is provided on the first stopper.
[0007] In a preferred embodiment, each of the infusion devices includes a containing box, and the containing box is fixedly installed on one side of the configuration box, a first liquid level gauge is provided on one side of the containing box, a delivery pipe is connected to the lower end surface of the containing box, and the end of the delivery pipe away from the containing box is connected to the configuration box, a first control valve is provided on the delivery pipe, a first spring is fixedly connected to the inner top wall of the containing box, an end of the first spring away from the inner top wall of the containing box is fixedly connected to a piston, and the piston is slidingly clamped on the inner side wall of the containing box, an input pipe is fixedly installed on the upper end surface of the containing box, and the bottom end of the input pipe passes through the piston and extends to the inner bottom wall of the containing box, a plug is fixedly installed on the top end of the input pipe, a connecting block is fixedly installed on the outer wall of the plug, a traction rope is fixedly connected to the connecting block, and the end of the traction rope away from the connecting block is fixedly connected to the upper end surface of the containing box.
[0008] In a preferred embodiment, the collecting device includes a collecting box, and the collecting box is fixedly mounted on one side of the configuration box, and the two mounting shafts are rotatably connected to one side of the collecting box, the upper end surface of the collecting box is connected to an output pipe, and the end of the output pipe away from the collecting box is connected to the configuration box, a second control valve is provided on the output pipe, a fixed groove is provided on one side of the collecting box, and two movable grooves are symmetrically provided on the inner side wall of the fixed groove, and a movable block is slidably provided in each of the movable grooves, a filter plate is fixedly connected between the two movable blocks, and the filter plate is slidably connected in the fixed groove, and the output ends of the two limiting devices are in contact with and abut against one side of the filter plate, a collecting groove is provided on the upper end surface of the filter plate, an inclined plate is fixedly mounted on the inner bottom wall of the collecting box, one side of the collecting box is connected to a drain pipe, and a third control valve is provided on the drain pipe.
[0009] In a preferred embodiment, the driving device includes a first reciprocating screw and a rack, and both ends of the first reciprocating screw are respectively mounted on the inner wall of the slide groove through bearings, and the output shaft of the second motor passes through one side of the cover plate and is fixedly connected to one end of the first reciprocating screw, and the rack is fixedly mounted on the inner wall of the slide groove, and the output end of the stirring device is connected to the rack, the first reciprocating screw is threadedly connected to a slider, and the slider is slidably connected in the slide groove, and the output end of the stirring device is rotatably connected to the lower end surface of the slider.
[0010] In a preferred embodiment, the stirring device includes a connecting shaft and two mounting plates, and the connecting shaft is rotatably mounted on the lower end surface of the slider, and the two mounting plates are symmetrically fixedly mounted on the lower end surface of the slider, a gear is fixedly mounted on the outer wall of the connecting shaft, and the gear is meshed with the rack, a first fixed shaft is fixedly mounted on the lower end surface of the connecting shaft, a first stirring blade is fixedly mounted on the outer wall of the first fixed shaft, the lower end surfaces of the two mounting plates are commonly fixedly connected to a fixing frame, and two first scrapers are symmetrically fixedly mounted on the lower end surface of the fixing frame, and the two first scrapers are respectively in contact with the inner wall of the configuration box.
[0011] In a preferred embodiment, the auxiliary stirring device includes a plurality of second reciprocating screws, and the plurality of second reciprocating screws are symmetrically rotatably installed on the lower end surface of the cover plate through bearings, and the output shaft of the first motor passes through the upper end surface of the cover plate and is fixedly connected to the upper end surface of the second reciprocating screw rods corresponding to the position, and the output ends of the two scraping devices are respectively connected to the second reciprocating screw rods corresponding to the position, one end of each of the second reciprocating screw rods is fixedly installed with a transmission wheel, and a transmission belt is commonly installed between the plurality of transmission wheels, the bottom end of each of the second reciprocating screw rods is fixedly connected to a second fixed shaft, and a second stirring blade is fixedly installed on the outer wall of each of the second fixed shafts.
[0012] In a preferred embodiment, each of the scraping devices includes a connecting plate, and the connecting plate is threadedly connected to two second reciprocating screw rods at corresponding positions, and the connecting plate is slidably connected to the outer wall of the fixed rod at corresponding positions, and two connecting rods are symmetrically fixedly installed on the lower end surface of the connecting plate, one end of the two connecting rods passes through the first stop block and extends to the inner bottom wall of the configuration box to be installed with a second scraper, and the second scraper is in contact with the inner side wall of the configuration box.
[0013] The present invention also provides a method for preparing a contact lens care solution containing sodium hyaluronate, comprising the following steps: S1, preparation stage: first, add the solvent to be mixed into the container through the input pipe as needed, and remove the plug from the input pipe. At this time, the plug will be suspended on the container under the traction of the traction rope, and then the solvent can be transported into the container through the input pipe. At this time, the solvent will push the piston, and the piston will move in the container. The movement of the piston will compress the first spring, and then the first control valve can be opened. At this time, the solvent in the container can enter the configuration box through the delivery pipe under the elastic action of the first spring. At this time, the delivery amount of the solvent can be controlled by observing the first liquid level gauge on the container. When different solvents are delivered to the configuration box, the mixed amount of the solvent can be known by observing the second liquid level gauge on one side of the configuration box; S2, the stage of stirring the care solution configuration: start the first motor and the second motor, and adjust the temperature of the condenser by adjusting the controller at the same time, which can be adjusted to the optimal temperature for solvent mixing. The start of the first motor can drive the second reciprocating screw to rotate, and the rotation of the second reciprocating screw can drive the transmission wheel to rotate. The transmission wheel can drive all the transmission wheels meshing with the transmission belt to rotate through the transmission belt. At this time, the rotation of multiple transmission wheels will drive multiple second reciprocating screws to rotate synchronously, and then the rotation of the second reciprocating screw will synchronously drive the second fixed shaft fixedly installed at its bottom end to rotate synchronously. At this time, the rotation of the second fixed shaft will drive the second stirring blade fixedly connected thereto to rotate. At this time, the rotation of each second stirring blade can stir the solvent in the four corners of the configuration box respectively, so that the preparation liquid in the configuration box can be fully stirred and mixed. At the same time, the rotation of each second reciprocating screw can synchronously drive the connecting plate threadedly connected thereto to reciprocate, and the reciprocating movement of the connecting plate will drive the second scraper to move synchronously through the connecting rod, so that the second scraper can stir the configuration liquid attached to the inner wall of the configuration box. The first stirring blade is driven by the first motor to move the first screw and the second motor to move the first screw to the first fixing shaft, and the first stirring blade is driven by the first motor to move the first fixing shaft to the first fixing shaft. The ... second stirring blade is driven by the first motor to move the first fixing shaft to the first fixing shaft. The second stirring blade is driven by the first motor to move the first fixing shaft to the S3, care solution collection stage: after the solvents are mixed and a contact lens care solution containing sodium hyaluronate is obtained, the second control valve can be opened to allow the care solution to enter the collection box through the output pipe. At this time, the care solution can be filtered by the filter plate, and the filtered care solution will drip onto the inclined plate. Then, the care solution can reach the inner bottom wall of the collection box through the inclined surface of the inclined plate. Then, the third control valve can be opened, and the filtered care solution can be output to the outside through the drain pipe. At this time, a contact lens care solution containing sodium hyaluronate and free of impurities can be obtained.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an infusion device, by which the solvent can be uniformly and quantitatively delivered to the configuration box through the delivery pipe, and the first control valve can be used to accurately deliver the solvent in the container.
[0015] 2. The present invention provides a collecting device, an installation shaft, a torsion spring, a second baffle and other devices. The collecting device can be used to filter and collect the nursing liquid after stirring and mixing, so as to prevent impurities from being mixed in the nursing liquid and affecting the use of the nursing liquid. The second baffle can be used to fix the filter plate of the collecting device to prevent the vibration generated by the stirring device during operation from causing the filter plate to separate from the collection box. At the same time, by canceling the limiting fixation of the filter plate by the second baffle, the replacement of the filter plate can be facilitated.
[0016] 3. The present invention is provided with a controller, a condenser, a driving device, a stirring device, an auxiliary stirring device, a first motor, a second motor and other devices. The first motor can be used to drive the auxiliary stirring device to work so that the dissolved material in the corner of the configuration box can be fully stirred through the work of the auxiliary stirring device. The second motor can be used to drive the driving device to drive the stirring device to work, so that the stirring device can reciprocate and stir the solvent in the configuration box, so that the solvent added to the configuration box can be fully and evenly mixed and stirred. The temperature of the condenser can be controlled by the controller, so that the solvent in the configuration box can be at the optimal fusion temperature.
[0017] 4. The present invention provides a scraping device, a first baffle and other devices to cooperate with each other. The scraping device can be connected with the auxiliary stirring device to scrape the solvent attached to the side walls on both sides of the configuration box so that it can be fully mixed with other solvents. The first baffle can be used to limit the solvent in stirring, which can effectively prevent the solvent from splashing on parts not related to the stirring work during stirring.
[0018] In summary, when the present invention is in use, the care solution solvent can be quantitatively and evenly added to the configuration box, and the solvent in the configuration box can be fully and evenly stirred and configured using an auxiliary stirring device and a stirring device. The collecting device can filter the configured care solution to prevent impurities from mixing in the care solution and affecting the quality of the care solution. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 2 A schematic diagram of a collection box portion of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 3 This is a schematic diagram of the cover plate portion of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 4 It is a partial schematic diagram of a scraping device of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 5 It is a schematic diagram of a stirring device portion of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 6 It is a partial schematic diagram of an auxiliary stirring device of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Figure 7 A partial schematic diagram of an infusion device for preparing a contact lens care solution containing sodium hyaluronate and a method thereof proposed by the present invention; Figure 8 This is a schematic diagram of the condenser tube portion of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Fig. 9 It is a schematic diagram of a collecting device portion of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Fig.10 This is a schematic diagram of the interior of a collection box of a device and method for preparing a contact lens care solution containing sodium hyaluronate proposed by the present invention; Fig.11 This is an enlarged view of point A in 6; Fig.12 This is an enlarged view of point B in 10.
[0020] In the figure: 1 configuration box, 2 cover plate, 3 first mounting frame, 4 first motor, 5 lifting handle, 6 second mounting frame, 7 second motor, 8 containing box, 9 first liquid level gauge, 10 conveying pipe, 11 second liquid level gauge, 12 controller, 13 collecting box, 14 sealing block, 15 first stopper, 16 fixing rod, 17 first scraper, 18 connecting plate, 19 connecting rod, 20 second scraper, 21 fixing frame, 22 mounting plate, 23 first fixing shaft, 24 first stirring blade, 25 connecting shaft, 26 gear, 27 rack, 28 slider, 29 slide groove, 30 first reciprocating screw rod, 31 second fixed shaft, 32 second stirring blade, 33 second reciprocating screw, 34 transmission wheel, 35 transmission belt, 36 first spring, 37 piston, 38 input pipe, 39 plugging, 40 connecting block, 41 traction rope, 42 sealing groove, 43 installation cavity, 44 condenser, 45 output pipe, 46 filter plate, 47 moving block, 48 collecting groove, 49 inclined plate, 50 drain pipe, 51 fixed groove, 52 moving groove, 53 limiting groove, 54 second spring, 55 limiting rod, 56 fixed plate, 57 installation shaft, 58 torsion spring, 59 second baffle, 60 card slot, 61 through slot. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.
[0022] Reference Figure 1-12 A device and method for preparing a contact lens care solution containing sodium hyaluronate include a configuration box 1, and a second liquid level gauge 11 is provided on one side of the configuration box 1. It should be noted that the second liquid level gauge 11 can reflect the liquid level information in the configuration box 1.
[0023] An installation cavity 43 is opened in the configuration box 1, and a condenser 44 is fixedly installed in the installation cavity 43. One end of the condenser 44 passes through the inner wall of the installation cavity 43 and extends outward to be installed with a controller 12, and is fixedly installed on one side of the configuration box 1. It should be noted that: the controller 12 is electrically connected to the condenser 44, and the temperature of the condenser 44 can be adjusted by operating the controller 12, so that the solvent in the configuration box 1 can be at the optimal fusion temperature.
[0024] An infusion device is fixedly installed on each side of the configuration box 1, and the output end of the infusion device is connected to the configuration box 1. A collecting device is fixedly connected to one side of the configuration box 1. Two mounting shafts 57 are symmetrically fixedly connected to the output end of the collecting device, and the mounting shaft 57 is rotatably connected to the output end of the collecting device. One end of each mounting shaft 57 is fixedly connected to a fixing plate 56. One side of each fixing plate 56 is fixedly connected to a torsion spring 58 between the output end of the collecting device, and the two torsion springs 58 are respectively sleeved on the outer wall of the mounting shaft 57 at the corresponding position. A second baffle plate 59 is fixedly installed on one side of each fixing plate 56, and the two second baffle plates 59 are respectively against one side of the filter plate 46 at the corresponding position. Two card slots 60 are symmetrically provided on both sides of the configuration box 1, and a sealing groove 42 is provided on the upper end surface of the configuration box 1. , and each card slot 60 is connected to the sealing slot 42, a sealing block 14 is engaged in the sealing slot 42, two limiting slots 53 are symmetrically provided on both sides of the sealing block 14, each limiting slot 53 is fixedly connected with a second spring 54, one end of each second spring 54 is fixedly connected with a limiting rod 55, and the limiting rod 55 is slidably carded in the limiting slot 53, and the end of the limiting rod 55 away from the second spring 54 is inserted in the corresponding card slot 60, and the upper end surface of the sealing block 14 is fixedly installed with a cover plate 2. It should be noted that: the sealing block 14 can be engaged with the sealing slot 42 to seal the configuration box 1 and the cover plate 2 to prevent external air from entering the configuration box 1, and the sealing block 14 can be fixed by engaging the limiting rod 55 with the card slot 60 to ensure that the cover plate 2 will not separate from the configuration box 1 and its sealing effect is guaranteed.
[0025] A slide groove 29 is provided on the lower end surface of the cover plate 2, and a driving device is provided in the slide groove 29. A stirring device is provided on the output end of the driving device, and the output end of the stirring device contacts the inner side wall of the configuration box 1. An auxiliary stirring device is provided on the lower end surface of the cover plate 2. A scraping device is connected to the output end of the auxiliary stirring device, and the output end of each scraping device contacts the inner side wall of the configuration box 1. A plurality of fixed rods 16 are symmetrically fixedly installed on the lower end surface of the cover plate 2, and the output end of the scraping device is slidably connected to the outer wall of the fixed rod 16 at the corresponding position. A first stopper 15 is fixedly installed on the lower end surfaces of the plurality of fixed rods 16, and the output end of the scraping device passes through the first stopper 15 and extends to the inner bottom wall of the configuration box 1. A through groove 61 is provided on the first stopper 15, and the first stopper 15 can block the solvent being stirred to prevent the solvent from splashing onto the parts on the lower end surface of the cover plate 2 during stirring.
[0026] Each infusion device includes a container box 8 , and the container box 8 is fixedly installed on one side of the configuration box 1 . A first liquid level meter 9 is provided on one side of the container box 8 . It should be noted that the first liquid level meter 9 can reflect the liquid level information of the solvent in the container box 8 .
[0027] The lower end surface of the containing box 8 is connected to a delivery pipe 10, and one end of the delivery pipe 10 away from the containing box 8 is connected to the configuration box 1. A first control valve is provided on the delivery pipe 10, and the solvent in the containing box 8 can be delivered to the configuration box 1 through the delivery pipe 10 by opening the control valve, and the delivery amount of the solvent can be adjusted by observing the solvent liquid level information.
[0028] A first spring 36 is fixedly connected to the inner top wall of the container box 8, and a piston 37 is fixedly connected to one end of the first spring 36 away from the inner top wall of the container box 8, and the piston 37 is slidably clamped on the inner side wall of the container box 8. An input pipe 38 is fixedly installed on the upper end surface of the container box 8, and the bottom end of the input pipe 38 passes through the piston 37 and extends to the inner bottom wall of the container box 8. It should be noted that outsiders can add solvent to the container box 8 through the input pipe 38. After the solvent enters the container box 8, it will push the piston 37 and compress the first spring 36. Due to the elastic characteristics of the first spring 36, when the first control valve is opened, the first spring 36 can be used to push the piston 37 to push the solvent in the container box 8.
[0029] A plug 39 is provided at the top end of the input pipe 38, a connecting block 40 is fixedly installed on the outer wall of the plug 39, a traction rope 41 is fixedly connected to the connecting block 40, and the end of the traction rope 41 away from the connecting block 40 is fixedly connected to the upper end surface of the container 8. It should be noted that the plug 39 can protect the input pipe 38 to prevent dust from entering the input pipe 38 and then mixing with the solvent, and the traction rope 41 can prevent the plug 39 from falling off after the plug 39 is removed.
[0030] The collecting device includes a collecting box 13, and the collecting box 13 is fixedly mounted on one side of the configuration box 1, and the two mounting shafts 57 are rotatably connected to one side of the collecting box 13, the upper end surface of the collecting box 13 is connected to an output pipe 45, and the end of the output pipe 45 away from the collecting box 13 is connected to the configuration box 1, and a second control valve is provided on the output pipe 45. After the solvent in the configuration box 1 is mixed, the second control valve can be opened, and then the care solution can enter the collecting box 13 through the output pipe 45.
[0031] A fixed groove 51 is provided on one side of the collecting box 13, and two movable grooves 52 are symmetrically provided on the inner side wall of the fixed groove 51, and a movable block 47 is slidably provided in each movable groove 52, and a filter plate 46 is fixedly connected between the two movable blocks 47, and the filter plate 46 is slidably connected in the fixed groove 51, and the output ends of the two limiting devices are in contact with one side of the filter plate 46, and the upper end surface of the filter plate 46 is provided with a collecting groove 48, and an inclined plate 49 is fixedly installed on the inner bottom wall of the collecting box 13, and a drain pipe 50 is connected to one side of the collecting box 13, and a third control valve is provided on the drain pipe 50. When the nursing liquid passes through the output After the pipe 45 enters the collecting box 13, the filter plate 46 can filter the impurities mixed in the care liquid to prevent the impurities from mixing in the care liquid and affecting the quality of the care liquid. By rotating the mounting shaft 57, the torsion spring 58 and the fixed plate 56 can rotate synchronously, so that the second baffle plate 59 can stop abutting against one side of the filter plate 46. At this time, the filter plate 46 can be pulled out of the fixed groove 51 to facilitate the replacement of the filter plate 46. When the second baffle plate 59 abuts against one side of the filter plate 46, the filter plate 46 can be limited, which can effectively prevent the filter plate 46 from being separated from the fixed groove 51 and prevent the filter plate 46 from losing its filtering effect.
[0032] The driving device includes a first reciprocating screw rod 30 and a rack 27, and both ends of the first reciprocating screw rod 30 are respectively mounted on the inner side walls of the slide groove 29 through bearings, and the rack 27 is fixedly mounted on the inner side walls of the slide groove 29, and the output end of the stirring device is connected to the rack 27, the first reciprocating screw rod 30 is threadedly connected to a slider 28, and the slider 28 is slidably connected in the slide groove 29, and the output end of the stirring device is rotatably connected to the lower end surface of the slider 28, and the output end of the cleaning device is fixedly connected to the lower end surface of the slider 28, the second motor 7 can drive the first reciprocating screw rod 30 to rotate, and the rotation of the first reciprocating screw rod 30 will drive the slider 28 to reciprocate in the slide groove 29.
[0033] The stirring device includes a connecting shaft 25 and two mounting plates 22, and the connecting shaft 25 is rotatably mounted on the lower end surface of the slider 28, and the two mounting plates 22 are symmetrically fixedly mounted on the lower end surface of the slider 28, a gear 26 is fixedly mounted on the outer wall of the connecting shaft 25, and the gear 26 is meshed with a rack 27, a first fixed shaft 23 is fixedly mounted on the lower end surface of the connecting shaft 25, a first stirring blade 24 is fixedly mounted on the outer wall of the first fixed shaft 23, and a fixing frame 21 is fixedly connected to the lower end surfaces of the two mounting plates 22, and two first scrapers 1 are symmetrically fixedly mounted on the lower end surface of the fixing frame 21 7, and the two first scrapers 17 are respectively in contact with the inner wall of the configuration box 1, and the movement of the slider 28 will drive the connecting shaft 25 to move synchronously. When the connecting shaft 25 moves, the connecting shaft 25 will rotate through the meshing of the gear 26 on its outer wall and the rack 27. At this time, the first fixed shaft 23 fixed at the bottom end of the connecting shaft 25 will drive the first stirring blade 24 to stir the solvent in the configuration box 1 back and forth. When the slider 28 moves, it will drive the mounting plate 22 and the fixing frame 21 to move synchronously, and then the first scraper 17 can scrape the solvent on the inner walls on both sides of the configuration box 1.
[0034] The auxiliary stirring device includes multiple second reciprocating screws 33, and the multiple second reciprocating screws 33 are symmetrically rotatably installed on the lower end surface of the cover plate 2 through bearings, and the output ends of the two scraping devices are respectively connected to the second reciprocating screws 33 with corresponding positions, one end of each second reciprocating screw 33 is fixedly installed with a transmission wheel 34, and a transmission belt 35 is commonly installed between the multiple transmission wheels 34. The bottom end of each second reciprocating screw 33 is fixedly connected with a second fixed shaft 31, and a second stirring blade 32 is fixedly installed on the outer wall of each second fixed shaft 31. When any one transmission wheel 34 rotates, the transmission belt 35 can drive the remaining transmission wheels 34 to rotate synchronously. When all the transmission wheels 34 rotate, the second reciprocating screws 33 fixedly connected thereto will rotate synchronously, so that the second fixed shaft 31 can drive the second stirring blade 32 to stir the solvent in the configuration box 1.
[0035] Each scraping device includes a connecting plate 18, and the connecting plate 18 is threadedly connected to two second reciprocating screws 33 at corresponding positions, and the connecting plate 18 is slidably connected to the outer wall of the fixed rod 16 at corresponding positions. The lower end surface of the connecting plate 18 is symmetrically fixed with two connecting rods 19, one end of the two connecting rods 19 passes through the first stopper 15 and extends to the inner bottom wall of the configuration box 1 to be installed with a second scraper 20, and the second scraper 20 is in contact with the inner side wall of the configuration box 1. The first motor 4 drives the transmission second reciprocating screw 33 fixedly connected to its output shaft to rotate, and the rotation of the second reciprocating screw 33 can drive the connecting plate 18 threadedly connected to it to move back and forth, so that the connecting plate 18 can drive the second scraper 20 through the connecting rod 19 to scrape the solvent on the inner walls on both sides of the configuration box 1.
[0036] It is particularly important to note that the first fixed shaft 23 , the second fixed shaft 31 , the first stirring blade 24 , the second stirring blade 32 , the first scraper 17 , and the second scraper 20 are all made of glass.
[0037] The functional principle of the present invention can be explained through the following operation mode: first, the solvent to be mixed is added into the container box 8 through the input pipe 38 according to the needs, and the plug 39 is taken out of the input pipe 38. At this time, the plug 39 will be suspended on the container box 8 under the traction action of the traction rope 41, and then the solvent can be transported to the container box 8 through the input pipe 38. At this time, the solvent will push the piston 37, and the piston 37 will move in the container box 8. The movement of the piston 37 will compress the first spring 36.
[0038] Then the first control valve can be opened. At this time, the solvent in the containing box 8 can enter the configuration box 1 through the delivery pipe 10 under the elastic action of the first spring 36. At this time, the delivery amount of the solvent can be controlled by observing the first liquid level gauge 9 on the containing box 8. When different solvents are delivered to the configuration box 1, the mixed amount of the solvents can be known by observing the second liquid level gauge 11 on one side of the configuration box 1.
[0039] Then the first motor 4 and the second motor 7 can be started, and the temperature of the condenser 44 can be adjusted by adjusting the controller 12 to the optimal temperature for solvent mixing. The start of the first motor 4 can drive the second reciprocating screw 33 fixedly connected to the output shaft of the first motor 4 to rotate. At this time, the rotation of the second reciprocating screw 33 can synchronously drive the transmission wheel 34 fixedly mounted thereon to rotate. Then the transmission wheel 34 can drive all the other transmission wheels 34 to rotate through the transmission belt 35. At this time, each transmission wheel 34 will rotate synchronously, and each second reciprocating screw 33 will rotate synchronously. The rotation of the second reciprocating screw 33 will be synchronous. The second fixed shaft 31 fixedly installed at its bottom end is driven to rotate synchronously. At this time, the rotation of the second fixed shaft 31 will drive the second stirring blade 32 fixedly connected thereto to rotate. At this time, the rotation of each second stirring blade 32 can stir the solvent in the four corners of the configuration box 1 respectively. At the same time, the rotation of each second reciprocating screw rod 33 can synchronously drive the connecting plate 18 threadedly connected thereto to move back and forth. The reciprocating movement of the connecting plate 18 will drive the second scraper 20 to move synchronously through the connecting rod 19, so that the second scraper 20 can scrape off the solvent attached to the inner wall of the configuration box 1, so that it can be fully stirred to prevent the solvent from adhering to the inner wall of the configuration box 1.
[0040] The start-up of the second motor 7 can drive the first reciprocating screw 30 to rotate. The rotation of the first reciprocating screw 30 will drive the slider 28 threadedly connected thereto to reciprocate in the slide groove 29. The reciprocating movement of the slider 28 will drive the connecting shaft 25 to move synchronously. When moving, the connecting shaft 25 will rotate through the engagement of the gear 26 and the rack 27. At this time, the rotation of the connecting shaft 25 will drive the first fixed shaft 23 to rotate synchronously. The rotation of the first fixed shaft 23 will drive the first stirring blade 24 to rotate synchronously. The rotation of the first stirring blade 24 can be used to stir the solvent in the configuration box 1. At the same time, under the reciprocating movement of the slider 28, the first stirring blade 24 can reciprocate to stir the solvent in the configuration box 1, and the prepared liquid can be fully stirred.
[0041] When the slider 28 moves, it will drive the two mounting plates 22 to move synchronously, and the two mounting plates 22 can drive the fixing frame 21 to move synchronously. At this time, the fixing frame 21 will drive the two first scrapers 17 to scrape off the solvent attached to the inner wall of the configuration box 1, so that it can fully mix other solvents. At this time, all the solvents attached to the inner wall of the configuration box 1 can be scraped off through the work of the first scraper 17 and the second scraper 20.
[0042] The first stopper 15 can be used to prevent the solvent from splashing onto other irrelevant working parts when the solvent is stirred and mixed. The first fixed shaft 23 and the mounting plate 22 can move in the through groove 61.
[0043] When the solvents are mixed and a contact lens care solution containing sodium hyaluronate is obtained, the second control valve can be opened to allow the care solution to enter the collection box 13 through the output pipe 45. At this time, the care solution can be filtered by the filter plate 46, and the filtered care solution will drip onto the inclined plate 49. Then, the care solution can reach the inner bottom wall of the collection box 13 through the inclined surface of the inclined plate 49. Then, the third control valve can be opened, and the filtered care solution can be output to the outside through the drain pipe 50. At this time, a contact lens care solution containing sodium hyaluronate without impurities can be obtained.
[0044] When the filter plate 46 needs to be replaced, the two mounting shafts 57 can be rotated, and the two mounting shafts 57 will drive the torsion spring 58 to rotate synchronously with the fixed plate 56, and then the fixed plate 56 can drive the second baffle plate 59 to stop abutting against one side of the filter plate 46, and then the filter plate 46 can be pulled out of the fixed groove 51. At this time, impurities on the filter plate 46 can be scraped into the collecting groove 48 by the edge of the fixed groove 51, which can prevent impurities from falling onto the inner bottom wall of the collecting box 13 and contaminating the contact lens care solution containing sodium hyaluronate. When the filter plate 46 needs to be replaced, the moving blocks 47 at both ends of the new filter plate 46 can be aligned with the two moving grooves 52, and then the filter plate 46 can be placed in the fixed groove 51. At this time, the rotation of the mounting shaft 57 is stopped, and then the torsion spring 58 will be reset. The reset of the torsion spring 58 will drive the fixed plate 56 and the second baffle plate 59 to reset synchronously. At this time, the second baffle plate 59 can abut against one side of the filter plate 46, and the installation of the filter plate 46 is completed.
[0045] When it is necessary to open the cover 2, first press multiple limit rods 55. At this time, the limit rods 55 will compress the second spring 54 and slide into the limit groove 53. At this time, the limit rods 55 will disengage from the corresponding slots 60. At this time, the cover 2 can be separated from the configuration box 1. At this time, the sealing block 14 will disengage from the sealing slot 42. When it is necessary to install the cover 2, the sealing block 14 can be aligned with the sealing slot 42, and then the sealing block 14 can be snapped into the sealing slot 42. At the same time, press multiple limit rods 55. At this time, the limit rods 55 will compress the second spring 54 and slide into the limit groove 53. When the sealing block 14 is installed in place, the second spring 54 will drive the limit rod 55 to move, so that the limit rod 55 is snapped into the slot 60. At this time, the cover 2 is installed.
[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for preparing a contact lens care solution containing sodium hyaluronate, comprising a preparation box (1), characterized in that: A second liquid level meter (11) is provided on one side of the configuration box (1). An installation cavity (43) is provided in the configuration box (1). A condenser (44) is fixedly installed in the installation cavity (43). One end of the condenser (44) passes through the inner wall of the installation cavity (43) and extends outward to be installed with a controller (12). The controller (12) is fixedly installed on one side of the configuration box (1). An infusion device is fixedly installed on each side of the configuration box (1), and the output end of the infusion device is connected to the configuration box (1). A collection device is fixedly connected to one side of the configuration box (1). Two installation shafts (57) are symmetrically fixedly connected to the output end of the collection device, and the installation shaft (57) is rotatably connected to the output end of the collection device. One end of each installation shaft (57) is fixedly connected to a fixing plate (56). One side of each fixing plate (56) is fixedly connected to the output end of the collection device with a torsion spring (58), and the two torsion springs (58) are respectively sleeved at corresponding positions. On the outer wall of the mounting shaft (57), a second baffle (59) is fixedly mounted on one side of each of the fixing plates (56), and the two second baffles (59) are respectively abutted against one side of the filter plate (46) at the corresponding position. Two card slots (60) are symmetrically provided on both sides of the configuration box (1). A sealing slot (42) is provided on the upper end surface of the configuration box (1), and each card slot (60) is communicated with the sealing slot (42). A sealing block (14) is engaged in the sealing slot (42). Two limiting grooves (53) are symmetrically provided on both sides of the sealing block (14), a second spring (54) is fixedly connected in each limiting groove (53), one end of each second spring (54) is fixedly connected to a limiting rod (55), and the limiting rod (55) is slidably clamped in the limiting groove (53), and one end of the limiting rod (55) away from the second spring (54) is inserted into a corresponding clamping groove (60), and a cover plate (2) is fixedly installed on the upper end surface of the sealing block (14); A first mounting frame (3) is fixedly mounted on the upper end surface of the cover plate (2), a first motor (4) is fixedly mounted on the first mounting frame (3), a second mounting frame (6) is fixedly mounted on one side of the cover plate (2), a second motor (7) is fixedly mounted on the second mounting frame (6), a slide groove (29) is provided on the lower end surface of the cover plate (2), a driving device is provided in the slide groove (29), an output shaft of the second motor (7) is connected to an output end of the driving device, a stirring device is provided on the output end of the driving device, and the output end of the stirring device contacts the inner side wall of the configuration box (1), and an auxiliary stirring device is provided on the lower end surface of the cover plate (2). , and the output shaft of the first motor (4) is connected to the output end of the auxiliary stirring device, the output end of the auxiliary stirring device is connected to a scraping device, and the output end of each scraping device contacts the inner wall of the configuration box (1), the lower end surface of the cover plate (2) is symmetrically fixed with a plurality of fixed rods (16), and the output end of the scraping device is slidably connected to the outer wall of the fixed rod (16) at a corresponding position, the lower end surfaces of the plurality of fixed rods (16) are commonly fixedly mounted with a first stopper (15), and the output end of the scraping device passes through the first stopper (15) and extends toward the inner bottom wall of the configuration box (1), and the first stopper (15) is provided with a through groove (61).
2. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 1, characterized in that: Each of the infusion devices comprises a container box (8), and the container box (8) is fixedly mounted on one side of the configuration box (1), a first liquid level gauge (9) is provided on one side of the container box (8), a delivery pipe (10) is connected to the lower end surface of the container box (8), and an end of the delivery pipe (10) away from the container box (8) is connected to the configuration box (1), a first control valve is provided on the delivery pipe (10), a first spring (36) is fixedly connected to the inner top wall of the container box (8), and a piston (36) is fixedly connected to the end of the first spring (36) away from the inner top wall of the container box (8) The container (8) is provided with a piston (37), and the piston (37) is slidably mounted on the inner side wall of the container (8); an input pipe (38) is fixedly mounted on the upper end surface of the container (8); the bottom end of the input pipe (38) passes through the piston (37) and extends toward the inner bottom wall of the container (8); a plug (39) is fixedly mounted on the top end of the input pipe (38); a connecting block (40) is fixedly mounted on the outer wall of the plug (39); a traction rope (41) is fixedly connected to the connecting block (40); and one end of the traction rope (41) away from the connecting block (40) is fixedly connected to the upper end surface of the container (8).
3. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 1, characterized in that: The collecting device comprises a collecting box (13), and the collecting box (13) is fixedly mounted on one side of the configuration box (1), and two mounting shafts (57) are rotatably connected to one side of the collecting box (13), an upper end surface of the collecting box (13) is connected to an output pipe (45), and an end of the output pipe (45) away from the collecting box (13) is connected to the configuration box (1), a second control valve is provided on the output pipe (45), a fixed groove (51) is provided on one side of the collecting box (13), and two movable grooves (52) are symmetrically provided on the inner side wall of the fixed groove (51) A moving block (47) is slidably mounted in each of the moving grooves (52), a filter plate (46) is fixedly connected between the two moving blocks (47), and the filter plate (46) is slidably connected in the fixed groove (51), and the output ends of the two limit devices are in contact with and abut against one side of the filter plate (46), a collecting groove (48) is provided on the upper end surface of the filter plate (46), an inclined plate (49) is fixedly mounted on the inner bottom wall of the collecting box (13), and a drain pipe (50) is connected to one side of the collecting box (13), and a third control valve is provided on the drain pipe (50).
4. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 1, characterized in that: The driving device comprises a first reciprocating screw (30) and a rack (27), and both ends of the first reciprocating screw (30) are respectively mounted on the inner side wall of the slide groove (29) through bearings, and the output shaft of the second motor (7) passes through one side of the cover plate (2) and is fixedly connected to one end of the first reciprocating screw (30), and the rack (27) is fixedly mounted on the inner side wall of the slide groove (29), and the output end of the stirring device is connected to the rack (27), the first reciprocating screw (30) is threadedly connected to a slider (28), and the slider (28) is slidably connected in the slide groove (29), and the output end of the stirring device is rotatably connected to the lower end surface of the slider (28).
5. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 4, characterized in that: The stirring device comprises a connecting shaft (25) and two mounting plates (22), wherein the connecting shaft (25) is rotatably mounted on the lower end surface of a slider (28), and the two mounting plates (22) are symmetrically fixedly mounted on the lower end surface of the slider (28), a gear (26) is fixedly mounted on the outer wall of the connecting shaft (25), and the gear (26) is meshed with a rack (27), a first fixed shaft (23) is fixedly mounted on the lower end surface of the connecting shaft (25), a first stirring blade (24) is fixedly mounted on the outer wall of the first fixed shaft (23), a fixing frame (21) is fixedly connected to the lower end surfaces of the two mounting plates (22), and two first scrapers (17) are symmetrically fixedly mounted on the lower end surface of the fixing frame (21), and the two first scrapers (17) are respectively in contact with the inner side wall of the configuration box (1).
6. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 1, characterized in that: The auxiliary stirring device comprises a plurality of second reciprocating screws (33), and the plurality of second reciprocating screws (33) are symmetrically rotatably mounted on the lower end surface of the cover plate (2) via bearings, and the output shaft of the first motor (4) passes through the upper end surface of the cover plate (2) and is fixedly connected to the upper end surface of the second reciprocating screw (33) at a corresponding position, and the output ends of the two scraping devices are respectively connected to the second reciprocating screws (33) at a corresponding position, and a transmission wheel (34) is fixedly mounted on one end of each of the second reciprocating screws (33), and a transmission belt (35) is commonly mounted between the plurality of transmission wheels (34), and the bottom end of each of the second reciprocating screws (33) is fixedly connected to a second fixed shaft (31), and a second stirring blade (32) is fixedly mounted on the outer wall of each of the second fixed shafts (31).
7. A device for preparing a contact lens care solution containing sodium hyaluronate according to claim 6, characterized in that: Each of the scraping devices comprises a connecting plate (18), and the connecting plate (18) is threadedly connected to two second reciprocating screw rods (33) at corresponding positions, and the connecting plate (18) is slidably connected to the outer wall of the fixed rod (16) at corresponding positions, and two connecting rods (19) are symmetrically fixedly installed on the lower end surface of the connecting plate (18), one end of the two connecting rods (19) passes through the first stopper (15) and extends toward the inner bottom wall of the configuration box (1) to be installed with a second scraper (20), and the second scraper (20) is in contact with the inner side wall of the configuration box (1).
8. A method for preparing a contact lens care solution containing sodium hyaluronate, characterized in that: The following steps are involved: S1, preparation stage: first, the solvent to be mixed is added into the container (8) through the input pipe (38) as required, and the plug (39) is taken out of the input pipe (38). At this time, the plug (39) will be suspended on the container (8) under the traction action of the traction rope (41). Then, the solvent can be transported to the container (8) through the input pipe (38). At this time, the solvent will push the piston (37), and the piston (37) will move in the container (8). The movement of the piston (37) will compress the first spring (36), and then the first control valve can be opened. At this time, the solvent in the container (8) can enter the configuration box (1) through the delivery pipe (10) under the elastic action of the first spring (36). At this time, the delivery amount of the solvent can be controlled by observing the first liquid level gauge (9) on the container (8). When different solvents are delivered to the configuration box (1), the mixed amount of the solvent can be known by observing the second liquid level gauge (11) on one side of the configuration box (1); S2, the stage of stirring the nursing solution: the first motor (4) and the second motor (7) are started, and the temperature of the condenser tube (44) is adjusted by adjusting the controller (12) to an optimal temperature for solvent mixing. The first motor (4) is started to drive the second reciprocating screw (33) to rotate, and the rotation of the second reciprocating screw (33) can drive the transmission wheel (34) to rotate. The transmission wheel (34) can drive all the transmission wheels (34) meshed with the transmission belt (35) to rotate through the transmission belt (35). At this time, the rotation of multiple transmission wheels (34) will drive multiple second reciprocating screws (33) to rotate synchronously, and then the rotation of the second reciprocating screw (33) will synchronously drive the fixed The second fixed shaft (31) installed at the bottom thereof rotates synchronously. At this time, the rotation of the second fixed shaft (31) drives the second stirring blade (32) fixedly connected thereto to rotate. At this time, the rotation of each second stirring blade (32) can stir the solvent in the four corners of the configuration box (1) respectively, so that the preparation liquid in the configuration box (1) is fully stirred and mixed. At the same time, the rotation of each second reciprocating screw rod (33) can synchronously drive the connecting plate (18) threadedly connected thereto to reciprocate. The reciprocating movement of the connecting plate (18) drives the second scraper (20) to move synchronously through the connecting rod (19), so that the second scraper (20) can scrape off the preparation liquid attached to the inner wall of the configuration box (1). The solvent is fully stirred to prevent it from adhering to the inner wall of the configuration box (1). The start of the second motor (7) can drive the first reciprocating screw (30) to rotate. The rotation of the first reciprocating screw (30) drives the slider (28) threadedly connected thereto to reciprocate in the slide groove (29). The reciprocating movement of the slider (28) drives the connecting shaft (25) to move synchronously. When the connecting shaft (25) moves, it rotates through the meshing of the gear (26) and the rack (27). At this time, the rotation of the connecting shaft (25) drives the first fixed shaft (23) to rotate synchronously. The rotation of the first fixed shaft (23) drives the first stirring blade (24) to rotate synchronously. The first stirring blade (24) is used to rotate synchronously. The rotation can stir the prepared liquid in the configuration box (1). At the same time, under the reciprocating movement of the slider (28), the first stirring blade (24) can reciprocate to stir the solvent in the configuration box (1), so that the solvent can be fully stirred. When the slider (28) moves, it will drive the two mounting plates (22) to move synchronously. The two mounting plates (22) can drive the fixed frame (21) to move synchronously. At this time, the fixed frame (21) will drive the two first scrapers (17) to scrape off the solvent attached to the inner wall of the configuration box (1), so that it can fully mix other solvents. At this time, all the solvents attached to the inner wall of the configuration box (1) can be scraped off by the operation of the first scraper (17) and the second scraper (20); S3, care solution collection stage: after the solvents are mixed and a contact lens care solution containing sodium hyaluronate is obtained, the second control valve can be opened to allow the care solution to enter the collection box (13) through the output pipe (45). At this time, the care solution can be filtered by the filter plate (46), and the filtered care solution will drip onto the inclined plate (49). Then, the care solution can reach the inner bottom wall of the collection box (13) through the inclined surface of the inclined plate (49). Then, by opening the third control valve, the filtered care solution can be output to the outside through the drain pipe (50). At this time, a contact lens care solution containing sodium hyaluronate and free of impurities can be obtained.