Drip-proof filling module and mask liquid filling equipment

Abstract

The invention discloses a drip-proof filling module and mask liquid filling equipment. The drip-proof filling module comprises a bearing body, an air flow body driving part, a first air flow channel, a second air flow channel, a flow guide part, a first liquid flow body driving part and a first liquid flow channel. During each filling, firstly, the first liquid fluid driving piece is used for quantitatively inputting a first solution into the first liquid flow channel, so that the first solution enters the first air flow channel, and a part of the first solution is output from the filling outlet; then, the gas flow body driving part is used for inputting gas into the first gas flow channel and pushing the remaining first solution to be completely output from the filling outlet; meanwhile, the gas flow driving part further inputs gas into the second gas flow channel and conveys the gas to the flow guide part, the outer edge of the filling outlet is purged in the annular direction after the gas is guided by the flow guide part, and the solution can be prevented from being attached or the attached first solution is blown to the inner side of the outer edge of the filling outlet and dissolved into the first solution which is being output again. Therefore, no solution is left at the filling outlet, and the anti-dripping effect is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent filling, in particular to a drip-proof filling module and a mask liquid filling device. BACKGROUND

[0002] In the mask liquid drip-proof filling technology, there are various common drip-proof methods, such as a structure of a pneumatic piston pump combined with a special drip-proof valve group to achieve filling resistance at the filling port position to prevent dripping, and a filling technology based on high-precision pressure control and back-suction function, etc. All of them can achieve relatively reliable flow interruption to prevent dripping.

[0003] However, in actual large-scale production environment, especially in long-time and high-frequency continuous filling operation, solution will gradually adhere and accumulate on the outer edge of the filling outlet, and eventually form dripping phenomenon. Through in-depth observation and engineering analysis, it is found that there is an important reason for causing dripping in the current technology: after each filling of the filling module is completed, a mechanical lifting action needs to be performed, i.e. moving up to make room for the transportation and positioning of the mask bag or mask bottle, and then moving down into the bottle opening or bag opening of the container to be filled for the next round of filling.

[0004] The periodic up-and-down movement causes the filling outlet to be in a state of frequent spatial displacement, so that although the liquid flow is interrupted by the valve body or back-suction at the moment of flow interruption, the residual liquid drops adhering to the outer edge of the filling nozzle are difficult to remain stable under the action of mechanical vibration and motion inertia. In long-term operation, due to the motion inertia effect and the change of the surface tension of the solution, solution accumulation gradually forms on the outer edge of the filling port. Once the residual solution reaches a certain volume, it will be shaken off due to gravity or mechanical movement, causing dripping pollution to the filling environment, affecting the cleanliness of the equipment, and even causing the outer wall of the packaging to be contaminated. The contaminated packaging will also contaminate the transportation path during transportation, causing the subsequent packaging to also be contaminated during transportation, seriously affecting the appearance quality of the product and the reliability of the production process. SUMMARY

[0005] The purpose of the present application is to provide a drip-proof filling module and a mask liquid filling device, which aims to solve the problem of affecting the drip-proof effect caused by the instability of the solution induced by mechanical movement.

[0006] To solve the above technical problems, the purpose of the present application is achieved by the following technical scheme: a drip-proof filling module is provided, comprising: a carrier body; an airflow body driving member arranged at the top of the carrier body and having its input end connected with an externally arranged gas source and its output end provided with two; a first air flow channel vertically arranged inside the carrier body, with its upper end connected to one of the output ends of the air flow body driving member, and its lower end being a filling outlet; a second air flow channel vertically arranged inside the carrier body, with its upper end connected to the other output end of the air flow body driving member, and its lower end being an air supply interface; a flow guide member arranged at the bottom of the carrier body and connected to the air supply interface, for circularly blowing the outer edge of the filling outlet to prevent solution from adhering to the outer edge; a first liquid flow body driving member arranged at the top of the carrier body, with its input end connected to an externally arranged first solution source; a first liquid flow channel vertically arranged inside the carrier body, with its upper end connected to the output end of the first liquid flow body driving member, and its lower end connected to the first air flow channel after being bent; wherein, during each filling, the first liquid flow body driving member is used to quantitatively input the first solution into the first liquid flow channel, so that the first solution enters the first air flow channel and a part of it is output from the filling outlet, and the air flow body driving member is used to input gas into the first air flow channel and push the remaining first solution to be completely output from the filling outlet.

[0007] Further, the bottom of the carrier body is provided with an extension; the flow guide member is sleeved on the extension, the top of the flow guide member is provided with an air inlet connector connected to the air supply interface, the inside of the flow guide member is provided with a flow guide cavity in communication with the air inlet connector, and the bottom of the flow guide member is provided with an annular air outlet in communication with the flow guide cavity, the annular air outlet is located on the radial outer side of the filling outlet and the air outlet angle is directed towards the outer edge of the filling outlet.

[0008] Further, the space of the flow guide cavity is taperedly arranged towards the annular air outlet.

[0009] Further, the air flow body driving member includes a gas pump and an electrically controlled four-way opening valve; two ports of the electrically controlled four-way opening valve are connected to the output of the gas pump in parallel; the other two ports of the electrically controlled four-way opening valve are the two output ends of the air flow body driving member, and are respectively connected to the upper ends of the first air flow channel and the second air flow channel; the electrically controlled four-way opening valve is used to independently adjust the opening degrees of the first air flow channel and the second air flow channel.

[0010] Further, the anti-dripping filling module further comprises: a second liquid flow body driving member arranged at the top of the carrier body, with its input end connected to an externally arranged second solution source; A second liquid flow channel is vertically arranged inside the carrier body, with its upper end connected to the output end of the second liquid flow driving member and its lower end bent and connected to the first gas flow channel; Wherein, the second liquid flow driving member is used to quantitatively input the second solution into the first liquid flow channel each time of filling, so that the second solution enters the first gas flow channel and a part of it is output from the filling outlet, and the gas flow driving member is used to input gas into the first gas flow channel and push the remaining second solution to be completely output from the filling outlet.

[0011] Further, a first electrically-controlled on-off valve is arranged at the position where the lower end of the first liquid flow channel is connected to the first gas flow channel. A second electrically-controlled on-off valve is arranged at the position where the lower end of the second liquid flow channel is connected to the first gas flow channel.

[0012] Further, the carrier body comprises a first carrier body and a second carrier body connected to each other, and a plurality of flow channel grooves and two valve grooves are arranged on the inside or the abutting surface of the first carrier body and the second carrier body. The plurality of flow channel grooves are respectively used to accommodate and limit the first gas flow channel, the second gas flow channel, the first liquid flow channel and the second liquid flow channel, and the two valve grooves are respectively used to accommodate and limit the first electrically-controlled on-off valve and the second electrically-controlled on-off valve.

[0013] Further, a maintenance opening is arranged on the outside of the first carrier body or the second carrier body and is connected to the two valve grooves.

[0014] Further, the lowest point of the lower end of the first liquid flow channel is lower than the connection point where the first liquid flow channel is connected to the first gas flow channel. The lowest point of the lower end of the second liquid flow channel is the connection point where the second liquid flow channel is connected to the first gas flow channel. The solution viscosity of the first solution is lower than 1000 mPa·s, and the solution viscosity of the second solution is higher than 1000 mPa·s.

[0015] The embodiment of the present application also provides a face mask liquid filling device, which comprises the anti-dripping filling module as described above.

[0016] The embodiment of the present application has the beneficial effect that, through the double mechanisms of gas flow purging and gas pressure pushing, no first solution is left at the filling outlet after each filling is completed, which significantly improves the anti-dripping effect and is suitable for high-frequency continuous operation scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 A front side perspective structural schematic view of the anti-dripping filling module provided by the embodiment of the present application is shown in the figure. Figure 2 A back side perspective structural schematic view of the anti-dripping filling module provided by the embodiment of the present application is shown in the figure. Figure 3 A front side exploded structural schematic view of the anti-dripping filling module provided by the embodiment of the present application is shown in the figure. Figure 4 A back side exploded structural schematic view of the anti-dripping filling module provided by the embodiment of the present application is shown in the figure. Figure 5 A cross-sectional structural schematic view of the flow guide provided by the embodiment of the present application is shown in the figure. Figure 6 A driving principle schematic view of the air flow body driving member provided by the embodiment of the present application is shown in the figure. Figure 7 An internal structural schematic view of another anti-dripping filling module (without electrically controlled on-off valve) provided by the embodiment of the present application is shown in the figure. Explanation of the figure: 1, carrier; 11, first carrier; 12, second carrier; 13, extension; 14, flow channel groove; 15, valve groove; 16, maintenance port; 2, air flow body driving member; 21, air pump; 22, electrically controlled four-way opening valve; 3, first air flow channel; 4, second air flow channel; 5, flow guide; 51, air inlet joint; 52, flow guide cavity; 53, annular air outlet; 6, first liquid flow body driving member; 7, first liquid flow channel; 71, first electrically controlled on-off valve; 8, second liquid flow body driving member; 9, second liquid flow channel; 91, second electrically controlled on-off valve. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0020] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0021] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, "a", "an", and "the" intended to include plural forms, unless the context clearly indicates otherwise.

[0022] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0023] Please refer to Figures 1 to 4 The embodiment of the present application provides a drip-proof filling module, comprising: a carrier 1, an airflow body driving element 2, a first airflow channel 3, a second airflow channel 4, a flow guide element 5, a first liquid flow body driving element 6, and a first liquid flow channel 7. The airflow body driving element 2 is arranged on the top of the carrier 1, and the input end is connected with an externally arranged gas source, and the output end is provided with two; The first airflow channel 3 is vertically arranged in the inside of the carrier 1, the upper end is connected with one of the output ends of the airflow body driving element 2, and the lower end is a filling outlet; The second airflow channel 4 is vertically arranged in the inside of the carrier 1, the upper end is connected with the other output end of the airflow body driving element 2, and the lower end is an air supply interface; The flow guide element 5 is arranged on the bottom of the carrier 1 and connected with the air supply interface, for circularly blowing the outer edge of the filling outlet to prevent the solution from adhering to the outer edge; The first liquid flow body driving element 6 is arranged on the top of the carrier 1, and the input end is connected with an externally arranged first solution source; The first liquid flow channel 7 is vertically arranged in the inside of the carrier 1, the upper end is connected with the output end of the first liquid flow body driving element 6, and the lower end is bent and connected into the first airflow channel 3; Wherein, each time when filling, the first liquid flow driving element 6 is used to quantitatively input the first solution into the first liquid flow channel 7, so that the first solution enters the first gas flow channel 3 and a part of it is output from the filling outlet, and the gas flow driving element 2 is used to input gas into the first gas flow channel 3 and push the remaining first solution to be completely output from the filling outlet.

[0024] The core of the embodiment is to realize precise filling and anti-dripping by gas-liquid cooperative control. Specifically, the anti-dripping filling module includes a carrier 1, a gas flow driving element 2, a first gas flow channel 3, a second gas flow channel 4, a flow guide 5, a first liquid flow driving element 6, and a first liquid flow channel 7; the gas flow driving element 2 is used to provide gas power, and its two output ends are connected to the first gas flow channel 3 and the second gas flow channel 4 respectively, the first gas flow channel 3 is used for the filling outlet, and the second gas flow channel 4 realizes annular blowing to the outer edge of the filling outlet through the flow guide 5, so that the solution can be prevented from adhering.

[0025] Specifically, each filling process is as follows: First, the first liquid flow driving element 6 quantitatively extracts the preset solution amount required for single filling from the first solution source and transports it through the first liquid flow channel 7, and the first solution amount enters the first gas flow channel 3 from the lower end of the first liquid flow channel 7, then continues to be transported downward in the first gas flow channel 3 and outputs a part from the filling outlet first, until the first liquid flow driving element 6 stops, at this time, the junction point of the first liquid flow channel 7 connected to the first gas flow channel 3 is the boundary point, the sum of the solution amount (first part) that has been output from the filling outlet and the solution amount (second part) remaining in the first gas flow channel 3 is the preset solution amount required for single filling. (It should be noted that the first solution will also be transported towards the upper end of the first gas flow channel 3 when it just enters the first gas flow channel 3, but due to the pressure difference, it will only transport upward for a short distance, and then it will maintain downward transport).

[0026] Then, at the moment when the first liquid flow driving element 6 stops, the gas flow driving element 2 is started to provide two gas pressures, one gas pressure pushes down from the upper end of the first gas flow channel 3, so that the second part of the solution remaining in the first gas flow channel 3 continues to be output from the filling outlet, thereby completing the filling of the single preset solution amount; at the same time, the other gas pressure is transported from the second gas flow channel 4 to the flow guide 5, and after being guided by the flow guide 5, it blows annularly to the outer edge of the filling outlet, so that the solution can be prevented from adhering or the adhered first solution can be blown to the inside of the outer edge of the filling outlet and re-melted into the first solution being output.

[0027] Based on this, through the dual mechanisms of gas flow blowing and gas pressure pushing, after each filling is completed, there is no first solution remaining at the filling outlet, which significantly improves the effect of anti-dripping and is suitable for high-frequency continuous operation scenarios.

[0028] In some embodiments, the amount of circumferential blowing to the outer edge of the filling outlet can be limited to save the gas source, because the solution adhesion of the filling outlet generally occurs after a certain time or a certain number of continuous operations, so the function of circumferential blowing can be started to participate in the following filling operation after a certain time interval or a plurality of filling operations, and then the limitation is repeated.

[0029] In combination Figure 5 As shown in the drawings, the flow guide 5 of the present application will be described in detail below.

[0030] In an embodiment, the bottom of the carrier 1 is provided with an extension 13; The flow guide 5 is sleeved on the extension 13, the top of the flow guide 5 is provided with an air inlet joint 51 connected with the air supply interface, the inside of the flow guide 5 is provided with a flow guide cavity 52 in communication with the air inlet joint 51, and the bottom of the flow guide 5 is provided with an annular air outlet 53 in communication with the flow guide cavity 52. The annular air outlet 53 is located on the radial outside of the filling outlet and has an air outlet angle towards the outer edge of the filling outlet.

[0031] In this embodiment, the extension 13 is columnar in shape, the flow guide 5 is annular columnar in shape, and the flow guide 5 can be sleeved on the extension 13. The filling outlet at the lower end of the first air flow channel 3 extends a small section from the bottom of the extension 13. After the flow guide 5 is sleeved on the extension 13, the air inlet joint 51 at the top of the flow guide 5 can be connected with the air supply interface and fixed by a locking nut, and the annular air outlet 53 at the bottom of the flow guide 5 is just located on the radial outside of the filling outlet, and the air outlet angle of the annular air outlet 53 is inclined towards the outer edge of the filling outlet. Based on this, the flow guide 5 fully covers the blowing gas flow to the outer edge of the filling outlet through the annular air outlet 53, effectively blows the surface where the solution may be attached, so that the solution cannot be attached to the outer edge, thereby achieving the effect of preventing dripping.

[0032] Further, the inner side of the flow guide 5 can also be clamped with the outer wall of the extension 13 to ensure the stability of the flow guide 5.

[0033] Further, the space of the flow guide cavity 52 is tapered towards the annular air outlet 53. This design can accelerate the airflow and increase the air outlet pressure of the annular air outlet 53, thereby enhancing the blowing force, so that the solution attached to the outer edge of the filling outlet can be more effectively blown to the inside of the outer edge and merged into the output solution.

[0034] Further, a vertical flow guide groove can be provided outside the outer edge of the filling outlet, which can make the attached solution more easily blown to the inside of the outer edge.

[0035] Further, in order to make the air outlet of the annular air outlet 53 more uniform, a guide structure can also be provided in the flow guide cavity 52 to uniformly guide the airflow to the annular air outlet 53.

[0036] In combination Figure 6 As shown in the following, the air flow body driving part 2 of the present application will be described in detail.

[0037] In an embodiment, the air flow body driving part 2 comprises an air pump 21 and an electrically controlled four-way opening valve 22. Two of the four openings of the electrically controlled four-way opening valve 22 are connected to the output of the air pump 21 after being connected in series. The other two openings of the electrically controlled four-way opening valve 22 are two output ends of the air flow body driving part 2, and are connected to the upper ends of the first air flow channel 3 and the second air flow channel 4 respectively. The electrically controlled four-way opening valve 22 is used to independently adjust the opening of the first air flow channel 3 and the second air flow channel 4.

[0038] In the embodiment, a specific implementation of the air flow body driving part 2 is provided, and two independently controlled opening valves (such as electromagnetic regulating valves, which can control the opening through current or voltage signals) are built in the electrically controlled four-way opening valve 22, which are used to control the air flow of the first air flow channel 3 and the second air flow channel 4 respectively, so as to realize accurate control of air flow distribution. For example, when filling high-viscosity solution, the air pressure of the first air flow channel 3 can be increased to enhance the pushing force, and the air flow intensity of the second air flow channel 4 can be adjusted to optimize the ring blowing effect.

[0039] In another embodiment, the air flow body driving part 2 can comprise two air pumps 21 and two electromagnetic regulating valves, and the two air pumps 21 are connected to an external gas source. One air pump 21, one electromagnetic regulating valve and the first air flow channel 3 form a separate path, and the other air pump 21, the other electromagnetic regulating valve and the second air flow channel 4 form another separate path.

[0040] In an embodiment, the anti-dripping filling module further comprises: A second liquid flow body driving part 8 is arranged at the top of the carrier 1, and the input end thereof is connected to an externally arranged second solution source. A second liquid flow channel 9 is vertically arranged inside the carrier 1, and the upper end thereof is connected to the output end of the second liquid flow body driving part 8, and the lower end thereof is connected to the first air flow channel 3 after being bent. Among them, during each filling, the second liquid flow body driving part 8 is used to quantitatively input the second solution into the first liquid flow channel 7, so that the second solution enters the first air flow channel 3 and outputs a part from the filling outlet, and the air flow body driving part 2 is used to input air into the first air flow channel 3 and push the remaining second solution to be completely output from the filling outlet.

[0041] In this embodiment, the second liquid flow driving element 8 and the second liquid flow channel 9 are introduced, so that the module has the function of double solution filling. The second liquid flow channel 9 is also connected to the first gas flow channel 3, and the filling is realized through the same gas flow pushing mechanism. This design can be applied to the scene of alternating or mixing filling of two different solutions, for example, in the production process of filling the essence liquid first and then filling the gel mask liquid.

[0042] In a specific application of alternating filling, the first solution of a single preset solution amount can be filled first in the manner described above, and then the second solution of a single preset solution amount can be filled again using the same principle (i.e., the second liquid flow driving element 8 outputs the second solution through the second liquid flow channel 9 and the first gas flow channel 3 first, and then the gas flow driving element 2 continues to output the remaining solution in the first gas flow channel 3, thereby completing the filling of the second solution). Thus, the application of alternating filling can be completed.

[0043] In a specific application of mixed filling, the first liquid flow driving element 6 and the second liquid flow driving element 8 can be started at the same time to deliver the first solution and the second solution to the first gas flow channel 3 respectively, and the mixing continues in the first gas flow channel 3 and is output from the filling outlet; at the same time, the gas flow driving element 2 can be started simultaneously to provide gas, and at this time the gas not only pushes out the first solution and the second solution, but also accelerates and improves the mixing effect of the two solutions.

[0044] In an embodiment, the first electrically controlled on-off valve 71 is arranged at the position where the lower end of the first liquid flow channel 7 connects to the first gas flow channel 3; and the second electrically controlled on-off valve 91 is arranged at the position where the lower end of the second liquid flow channel 9 connects to the first gas flow channel 3.

[0045] In this embodiment, the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91 are arranged at the positions where the first liquid flow channel 7 and the second liquid flow channel 9 connect to the first gas flow channel 3, respectively. The electrically controlled on-off valve can be an electromagnetic valve or an electric ball valve, which has the functions of quick opening and closing and good sealing performance.

[0046] It can be understood that the preset solution amount required for single filling of the first solution is limited by the first electrically controlled on-off valve 71, and the preset solution amount required for single filling of the second solution is limited by the second electrically controlled on-off valve 91. Therefore, when the first liquid flow driving element 6 and the second liquid flow driving element 8 stop delivering the corresponding solution during each filling, the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91 can be stopped at the same time (they can also be opened at the same time), and at this time, the sum of the solution that has been filled and the remaining solution in the first gas flow channel 3 is the preset solution amount required for single filling, which is limited by the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91.

[0047] In an embodiment, the carrier 1 comprises a first carrier 11 and a second carrier 12 connected to each other by bonding, and a plurality of flow channel grooves 14 and two valve grooves 15 are formed on the inner bonding surface of the first carrier 11 and the second carrier 12; the plurality of flow channel grooves 14 are respectively used for accommodating and limiting the first gas flow channel 3, the second gas flow channel 4, the first liquid flow channel 7 and the second liquid flow channel 9; and the two valve grooves 15 are respectively used for accommodating and limiting the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91.

[0048] In the embodiment, the carrier 1 can be composed of the first carrier 11 and the second carrier 12 by bonding connection; the matching structure of the positioning strip and the positioning groove can be arranged on the bonding surface of the first carrier 11 and the second carrier 12 to realize accurate bonding positioning, and the first carrier 11 and the second carrier 12 are fixedly connected to each other by screws after positioning.

[0049] In the embodiment, the plurality of flow channel grooves 14 and the two valve grooves 15 are correspondingly designed according to the shapes and positions of the first gas flow channel 3, the second gas flow channel 4, the first liquid flow channel 7, the second liquid flow channel 9, the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91, so that the first gas flow channel 3, the second gas flow channel 4, the first liquid flow channel 7, the second liquid flow channel 9, the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91 can be kept stable in the carrier 1.

[0050] In an embodiment, a maintenance opening 16 communicating with the two valve grooves 15 is formed on the outer surface of the first carrier 11 or the second carrier 12.

[0051] In the embodiment, in order to facilitate wiring of the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91, the maintenance opening 16 communicating with the two valve grooves 15 can be formed on the outer surface of the first carrier 11 or the second carrier 12, and wiring and maintenance can be performed through the maintenance opening 16. Of course, the wiring of the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91 can also be performed through the adjacent flow channel grooves 14, and a wiring groove can be additionally formed in the flow channel groove 14. Further, a protective cover can be arranged at the maintenance opening 16 for protection.

[0052] In combination with Figure 7 As shown in the figure, in another scenario of the present application, the first liquid flow channel 7 and the second liquid flow channel 9 can also be separately selected according to the solution viscosity. For this purpose, the lower end of the first liquid flow channel 7 and the second liquid flow channel 9 is further designed.

[0053] Specifically, the lowest point of the lower end of the first liquid flow channel 7 is lower than the access point of the first liquid flow channel 7 to the first gas flow channel 3 (similar to the principle of water storage bend); the lowest point of the lower end of the second liquid flow channel 9 is the access point of the second liquid flow channel 9 to the first gas flow channel 3; the solution viscosity of the first solution is lower than 1000 mPa·s, and the solution viscosity of the second solution is higher than 1000 mPa·s.

[0054] In the embodiment, the design of the lower end of the first liquid channel 7 makes it applicable to the filling of a relatively dilute solution; after the single filling of the first solution into the first gas channel 3, the first solution will not continue to flow into the first gas channel 3 with the lowest point of the lower end of the first liquid channel 7 as the boundary point, and the gas pressure in the first gas channel 3 input by the gas flow driving member 2 will not suck out the first solution. This scheme does not need to use the first electrically controlled on-off valve 71, and can save costs.

[0055] In the embodiment, the design of the lower end of the second liquid channel 9 makes it applicable to the filling of a relatively thick solution; after the single filling of the second solution into the first gas channel 3, the second solution will not continue to flow into the first gas channel 3 with the lowest point of the lower end of the first liquid channel 7 (i.e., the access point of the first gas channel 3) as the boundary point, and the gas pressure in the first gas channel 3 input by the gas flow driving member 2 will not easily continue to suck out the second solution with high thickness (because the gas pressure is only to push the second solution to output, which belongs to low-speed gas flow). This scheme does not need to use the second electrically controlled on-off valve 91, and can save costs.

[0056] In the embodiment, the access point of the lower end of the first liquid channel 7 is higher than the lower end of the second liquid channel 9, so that the solution transported by the first liquid channel 7 will not enter the second liquid channel 9 for residual (even if some enters, it will be carried out by the gas of the first gas channel); and the solution transported by the second liquid channel 9 will not rise to the access point position of the lower end of the first liquid channel 7.

[0057] In the scene of the present application, that is, Figure 7 In the scene, the first electrically controlled on-off valve 71 and the second electrically controlled on-off valve 91 can also be used together, so as to more ensure the separate use of the first liquid channel 7 and the second liquid channel 9.

[0058] The embodiment of the present application also provides a mask liquid filling device, which comprises the above anti-dripping filling module.

[0059] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A drip-proof filling module, characterized in that, The application relates to a liquid filling device, which comprises a carrier, a gas flow driving element arranged on the top of the carrier and connected with a gas source arranged outside, two output ends of the gas flow driving element, a first gas flow channel arranged vertically in the carrier and connected with one of the output ends of the gas flow driving element, a filling outlet at the lower end of the first gas flow channel, a second gas flow channel arranged vertically in the carrier and connected with the other output end of the gas flow driving element, an air supply interface at the lower end of the second gas flow channel, a flow guide element arranged at the bottom of the carrier and connected with the air supply interface, a first liquid flow driving element arranged on the top of the carrier and connected with a first solution source arranged outside, a first liquid flow channel arranged vertically in the carrier and connected with the output end of the first liquid flow driving element, and a first gas flow channel connected with the lower end of the first liquid flow channel. The bottom of the carrier is provided with an extension part, the flow guide element is sleeved on the extension part, the top of the flow guide element is provided with an air inlet connector connected with the air supply interface, the inside of the flow guide element is provided with a flow guide cavity in communication with the air inlet connector, the bottom of the flow guide element is provided with an annular air outlet in communication with the flow guide cavity, the annular air outlet is located on the radial outside of the filling outlet and the air outlet angle is directed to the outer edge of the filling outlet. The space of the flow guide cavity is gradually reduced towards the annular air outlet. The gas flow driving element comprises a gas pump and an electrically-controlled four-way opening valve, two ports of the electrically-controlled four-way opening valve are connected with the output of the gas pump in parallel, the other two ports of the electrically-controlled four-way opening valve are the two output ends of the gas flow driving element and are respectively connected with the upper ends of the first gas flow channel and the second gas flow channel, and the electrically-controlled four-way opening valve is used for independently adjusting the opening degrees of the first gas flow channel and the second gas flow channel. The application further comprises a second liquid flow driving element arranged on the top of the carrier and connected with a second solution source arranged outside, a second liquid flow channel arranged vertically in the carrier and connected with the output end of the second liquid flow driving element, and a first gas flow channel connected with the lower end of the second liquid flow channel, wherein the second liquid flow driving element is used for quantitatively inputting the second solution into the first liquid flow channel, the second solution enters the first gas flow channel and a part of the second solution is output from the filling outlet, and the gas flow driving element is used for inputting gas into the first gas flow channel and pushing the remaining second solution to be output from the filling outlet. The position, where the lower end of the first liquid flow channel is connected with the first gas flow channel, is provided with a first electrically-controlled on-off valve, and the position, where the lower end of the second liquid flow channel is connected with the first gas flow channel, is provided with a second electrically-controlled on-off valve. ​ ​ ​ 2. The drip-proof filling module according to claim 1, characterized in that, ​ ​ 3. The drip prevention filling module according to claim 2, characterized in that, ​ 4. The drip-proof filling module according to claim 1, characterized in that, ​ ​ ​ ​ 5. The drip-proof filling module according to claim 1, characterized in that, ​ ​ ​ ​ 6. The drip-proof filling module according to claim 5, characterized in that, ​ ​ 7. The drip prevention filling module according to claim 6, characterized in that, The carrier comprises a first carrier and a second carrier connected to each other, and a plurality of flow channel grooves and two valve grooves are formed on the inner or abutting surface of the first carrier and the second carrier; The plurality of flow channel grooves are respectively used for accommodating and limiting the first gas flow channel, the second gas flow channel, the first liquid flow channel and the second liquid flow channel; and the two valve grooves are respectively used for accommodating and limiting the first electrically-controlled on-off valve and the second electrically-controlled on-off valve.

8. The drip-proof filling module according to claim 7, characterized in that, A maintenance opening is formed on the outer part of the first carrier or the second carrier and is in communication with the two valve grooves.

9. The drip-proof filling module according to claim 5, characterized in that, The lowest point of the lower end of the first liquid flow channel is lower than the access point of the first liquid flow channel to the first gas flow channel; The lowest point of the lower end of the second liquid flow channel is the access point of the second liquid flow channel to the first gas flow channel; The solution viscosity of the first solution is lower than 1000 mPa·s, and the solution viscosity of the second solution is higher than 1000 mPa·s.

10. A pack liquid filling apparatus characterized by comprising: The drip-proof filling module comprises the drip-proof filling module according to any one of claims 1-9.

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