A manual liquid preparation device
By designing a manual liquid preparation device, an integrated operation of liquid aspiration, measurement, and transfer was achieved, solving the problems of cumbersome steps and pollution in existing technologies, and improving the efficiency and safety of chemical liquid preparation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN OPTICAL MICRO SEMICON TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
Existing suction tubes cannot perform liquid preparation, resulting in cumbersome and easily contaminated steps in the preparation of chemical liquids. Furthermore, the automatic liquid replenishment module of fully automatic cleaning machines is costly and complex to maintain.
A manual liquid preparation device was designed, including a storage tank, a suction tube, an air bladder, and a valve. The air bladder provides power to achieve integrated operation of liquid suction, measurement, and transfer. A check valve controls the opening and closing of the air vent, and a scale line ensures the accuracy of the concentration. A valve is installed at the connection between the suction tube and the storage tank to prevent liquid leakage.
It enables liquid aspiration, measurement, and pipetting to be completed in one step, reducing the risk of chemical liquid contamination, improving work efficiency and safety, and ensuring the consistency and accuracy of chemical liquid concentration.
Smart Images
Figure CN224443071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semiconductor cleaning technology, and in particular to a manual liquid preparation device. Background Technology
[0002] In recent years, the semiconductor industry has risen and developed rapidly in China, leading to an increased market demand for high-precision quartz substrates. Quartz substrates undergo processing and cleaning to achieve high specifications and precision, especially the cleaning of photomask substrates, which is crucial for reducing surface contamination and defects. Currently, most photomask substrate cleaning in China uses automated wet cleaning machines. These machines require high purity of the chemical cleaning solution, and the concentration of the solution inevitably decreases over time, necessitating periodic replenishment. While fully automated cleaning machines have automatic replenishment modules, their cost is relatively high and equipment maintenance is complex. For chemicals with low corrosivity and volatility, manual addition can be used to reduce costs, minimize contamination, and meet usage requirements.
[0003] Existing pipettes can only transfer liquids and cannot perform the function of liquid preparation. When preparing a liquid, the chemical solution needs to be transferred into a measuring cup for measurement first, and then poured into a cleaning tank to complete the preparation. This process involves many steps, and because the measuring cup has a large opening, it is inevitable that the chemical solution will be contaminated.
[0004] Therefore, a well-designed structure is urgently needed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a manual liquid preparation device.
[0006] To achieve the above objectives, in a first aspect, this utility model provides a manual liquid preparation device, which adopts the following technical solution:
[0007] A manual liquid dispensing device includes a liquid storage tank, one end of which is connected to a suction tube and the other end of which is connected to an air bladder. The air bladder is used to provide power for liquid intake and discharge. The end of the liquid storage tank closest to the air bladder is designated as the top. An air hole is provided on the top surface of the liquid storage tank. The air hole is opened and closed by a sealing unit. A valve is provided at the connection between the liquid storage tank and the suction tube. Scale lines are marked on the side surface of the liquid storage tank.
[0008] Furthermore, the sealing unit includes a check valve. When the check valve is in a first state, there is a gap between the check valve and the air hole. When the check valve is in a second state, the check valve and the air hole are in a sealed fit.
[0009] Furthermore, in the first state, the airbag contracts, and the check valve includes a movement state in which it moves toward the end away from the suction tube.
[0010] Furthermore, in the second state, the airbag inflates, and the check valve includes a movement toward one end of the suction tube.
[0011] Furthermore, the liquid storage tank is equipped with a handle.
[0012] Furthermore, the suction tube is made of at least high-density polyethylene, polypropylene, fluorinated ethylene propylene copolymer, or polytetrafluoroethylene.
[0013] Furthermore, the length of the suction tube is 200mm-500mm, and the radius is 5mm-10mm.
[0014] Furthermore, the height of the liquid storage tank is 200-300mm and the radius is 50-100mm, and the height of the airbag is 100-300mm and the radius is 20mm-30mm.
[0015] Furthermore, the valve is at least made of polytetrafluoroethylene, soluble polytetrafluoroethylene, or polyetheretherketone.
[0016] Furthermore, the end of the suction tube furthest from the storage tank is set at a 45° angle.
[0017] The beneficial effects of this utility model are:
[0018] This manual dispensing device, through its integrated design, achieves liquid aspiration, measurement, and transfer in one step, reducing the multiple transfer steps required in traditional methods. This effectively lowers the risk of chemical contamination, greatly simplifies the dispensing process, and improves work efficiency. Meanwhile, the graduation markings on the storage tank ensure the consistency and accuracy of the chemical concentration prepared each time, contributing to improved precision in liquid aspiration during dispensing. Furthermore, the addition of a valve at the connection between the suction tube and the storage tank avoids the risk of liquid leakage during transfer, enhancing safety during the dispensing process. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0020] Figure 1 This is a three-dimensional structural diagram of the manual liquid preparation device of this utility model;
[0021] Figure 2 This is a top view of the manual liquid preparation device of this utility model.
[0022] In the diagram, 100 is the liquid storage tank; 200 is the suction tube; 300 is the air bladder; 400 is the air hole; 500 is the check valve; 600 is the valve; and 700 is the handle. Detailed Implementation
[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0025] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.
[0028] This utility model discloses a manual liquid preparation device, including a liquid storage tank 100. One end of the liquid storage tank 100 is connected to a suction pipe 200, and the other end is connected to an air bladder 300. The air bladder 300 is used to provide power for liquid intake and discharge. The end of the liquid storage tank 100 near the air bladder 300 is designated as the top. The top surface of the liquid storage tank 100 is provided with an air hole 400, which is opened and closed by a sealing unit. A valve 600 is provided at the connection between the liquid storage tank 100 and the suction pipe 200. Scale lines are marked on the side surface of the liquid storage tank 100.
[0029] like Figure 1 , Figure 2 As shown, the manual liquid dispensing device provided by this utility model includes key components such as an air bladder 300, a liquid storage tank 100, a suction tube 200, a valve 600, an air vent 400, and a sealing unit. The air bladder 300 serves as a power source, and its corrugated folding structure allows it to expand and contract to adjust the internal volume of the air bladder 300, thereby providing the necessary pressure or suction for the manual liquid dispensing device to complete the intake and discharge of chemical liquid from the suction tube 200. The liquid storage tank 100 has an air vent 400 at its top, which, in conjunction with the sealing unit, enables the opening and closing of the liquid storage tank 100 with respect to the outside. Simultaneously, the suction tube 200 has a valve 600 at its end near the liquid storage tank 100 to control the inflow and outflow of the chemical liquid.
[0030] When the staff uses this manual liquid preparation device to prepare the liquid, they only need to immerse the end of the suction tube 200 into the chemical liquid, open the sealing unit first, and squeeze the air bladder 300. The gas inside the air bladder 300 is compressed and discharged from the air hole 400 on the top surface of the storage tank 100. After the gas inside the air bladder 300 is discharged, the sealing unit is closed. At this time, a negative pressure is formed inside the air bladder 300 and the storage tank 100. After the valve 600 at the suction tube 200 is opened, the external chemical liquid is drawn into the storage tank 100 through the suction tube 200 due to the negative pressure difference inside the storage tank 100. When the required amount is reached, the operator closes valve 600, moves suction pipe 200 above the cleaning tank, closes the sealing unit, and squeezes airbag 300 again, allowing the chemical solution to enter the cleaning tank through suction pipe 200 under the action of pressure difference; or after moving suction pipe 200 above the cleaning tank, the sealing unit and valve 600 are opened, allowing the chemical solution to flow into the cleaning tank along suction pipe 200 under the action of gravity to complete the solution preparation process.
[0031] This manual liquid preparation device, through its integrated design, achieves liquid aspiration, measurement, and transfer in one step, reducing the multiple transfer steps required in traditional methods. This effectively lowers the risk of chemical contamination, greatly simplifies the preparation process, and improves work efficiency. Meanwhile, the graduation markings on the storage tank 100 ensure the consistency and accuracy of the chemical solution concentration each time it is prepared, contributing to improved precision in liquid aspiration during chemical preparation. Furthermore, the addition of a valve 600 at the connection between the aspiration tube 200 and the storage tank 100 avoids the risk of liquid leakage during transfer, enhancing safety during the preparation process.
[0032] In one embodiment of this utility model, the sealing unit includes a check valve 500. When the check valve 500 is in a first state, there is a gap between the check valve 500 and the air hole 400. When the check valve 500 is in a second state, the check valve 500 and the air hole 400 are sealed together.
[0033] The sealing unit of this utility model adopts a check valve 500 design, which has two working states: a first state and a second state. When the check valve 500 is in the first state, there is a certain gap between the check valve 500 and the vent 400, allowing air to freely enter and exit the liquid storage tank 100 through this gap, thereby balancing the air pressure inside and outside the liquid storage tank 100; when the check valve 500 is in the second state, the check valve 500 and the vent 400 are tightly fitted to form a sealing fit, preventing air or liquid from entering or leaving the liquid storage tank 100 through the vent 400.
[0034] The manual liquid dispensing device of this invention further optimizes its functionality and practicality by introducing a check valve 500 with a specific working state as a sealing unit, which not only meets the needs of high-precision liquid dispensing, but also improves the convenience and safety of use.
[0035] In one embodiment of the present invention, in the first state, the airbag 300 contracts, and the check valve 500 has a movement state in which it moves toward the end away from the suction tube 200; in the second state, the airbag 300 expands, and the check valve 500 has a movement state in which it moves toward the end close to the suction tube 200.
[0036] Specifically, the check valve 500 and the vent 400 are designed in a conical shape at their interface, allowing for flexible insertion into the vent 400. When chemical liquid needs to be drawn into the storage tank 100, the user squeezes the air bladder 300 to contract it. At this time, the check valve 500 is in its first state, automatically opening and moving away from the suction pipe 200 to open the vent 400. Gas in the storage tank 100 and the air bladder 300 is discharged through the vent 400. When the air bladder 300 is no longer compressed, the check valve 500 moves towards the suction pipe 200, closing the vent 400. At this time, a negative pressure is formed inside the storage tank 100, allowing external liquid to enter the storage tank 100.
[0037] By incorporating a check valve 500, operators can precisely control the pressure changes within the storage tank 100 through simple squeezing and releasing of the air bladder 300, thereby accurately adjusting the intake and discharge rates of the chemical solution. The entire solution preparation process can be completed simply by operating the air bladder 300, greatly simplifying the complex manual steps of traditional solution preparation methods and reducing operational difficulty and time costs. Simultaneously, when the storage tank 100 of this manual solution preparation device draws in the chemical solution and the check valve 500 closes, it effectively prevents impurities from the outside air from entering the storage tank 100, reducing the risk of chemical solution contamination.
[0038] It should be noted that this utility model does not limit the type of check valve. In one embodiment, the check valve may be a swing check valve or a lift check valve, etc.
[0039] In one embodiment of this utility model, the liquid storage tank 100 is provided with a handle 700. For example... Figure 1 As shown, the curved handle 700 on the side of the liquid storage tank 100 not only enhances the practicality of the device but also improves the user experience. Specifically, the curved handle 700 allows users to more easily grip the liquid storage tank 100 for various operations, such as moving and tilting to pour liquid. Especially when precise control of the liquid volume is required, the stable grip helps improve operational accuracy; at the same time, the handle 700 design reduces the risk of accidental drops due to slippage, which is particularly important when handling highly corrosive or toxic chemical liquids. It provides users with a stable grip point, increasing safety during use. Furthermore, the quick and easy operation of the liquid dispensing device by holding the handle 700, especially in scenarios requiring frequent addition or replacement of chemical cleaning solutions, allows users to complete more work in less time, improving overall work efficiency.
[0040] It should be noted that this utility model does not limit the material of the handle 700 or the connection method between the handle 700 and the liquid storage tank 100. In one embodiment, the handle 700 is made of the same material as the liquid storage tank 100. In addition, the handle 700 can be manufactured directly as an integral part of the liquid storage tank 100 by injection molding, or it can be assembled onto the liquid storage tank 100 later by screws, welding or other fixing methods.
[0041] In one embodiment of this utility model, the suction tube 200 is at least made of high-density polyethylene, polypropylene, fluorinated ethylene propylene copolymer, or polytetrafluoroethylene (PTFE), and the valve 600 is at least made of polytetrafluoroethylene, soluble polytetrafluoroethylene (PFA), or polyether ether ketone (PEEK). Specifically, the suction tube 200 is made of at least high-density polyethylene (HDPE), polypropylene (PP), fluorinated ethylene propylene copolymer (FEP), or polytetrafluoroethylene (PTFE), and the valve 600 is made of at least polytetrafluoroethylene (PTFE), soluble polytetrafluoroethylene (PFA), or polyether ether ketone (PEEK).
[0042] Because these materials possess excellent durability, using one or a combination of them can significantly enhance the resistance of the suction tube 200 to various chemical substances, whether acidic, alkaline, or even organic solvents. This effectively prevents corrosion and damage to the tube, allowing the suction tube 200 and valve 600 to maintain efficient operation for extended periods, reducing replacement frequency and maintenance costs. Furthermore, these materials are less likely to react chemically with liquids, minimizing the possibility of contamination during chemical preparation.
[0043] In addition, both the suction pipe 200 and the storage tank 100 are equipped with antistatic coatings. To further improve the durability and safety of the manual liquid dispensing device, surface modification treatments can be applied according to specific needs, such as adding an antistatic coating to prevent safety hazards caused by static electricity accumulation.
[0044] In one embodiment of this utility model, the length of the suction tube 200 is 200mm-500mm and the radius is 5mm-10mm; the height of the liquid storage tank 100 is 200-300mm and the radius is 50-100mm; and the height of the airbag 300 is 100-300mm and the radius is 20mm-30mm.
[0045] By setting the length of the suction tube 200 between 200mm and 500mm, it can accommodate liquid extraction from containers of varying depths while facilitating precise control of operation. Its radius, designed to be 5mm to 10mm, ensures sufficient flow while maintaining good flexibility and durability. The height of the storage tank 100 is 200mm to 300mm, and its radius is 50mm to 100mm. This design provides ample volume to meet the needs of a single liquid preparation while maintaining a moderate size for easy portability and storage. The height of the air bladder 300 is set to 100mm to 300mm, and its radius to 20mm to 30mm, ensuring sufficient power to drive the liquid in and out of the storage tank 100. These dimensional parameters not only consider the functionality and ease of operation of the equipment but also aim to optimize user experience and improve work efficiency.
[0046] In a preferred embodiment, the air bladder 300, the liquid storage tank 100, and the suction tube 200 in the manual liquid dispensing device of this utility model are all made of high-density polyethylene (HDPE), and the wall thickness of the air bladder 300, the liquid storage tank 100, and the suction tube 200 is 1 mm.
[0047] In one embodiment of this utility model, the end of the suction tube 200 away from the liquid storage tank 100 is set at a 45° angle.
[0048] By setting the end of the suction tube 200 away from the storage tank 100 at a 45° angle, the flowability of liquid entering the suction tube 200 can be significantly improved. Compared to a right-angle inlet, the angle reduces fluid resistance, making it easier for liquid to be drawn into the storage tank 100. Especially at low liquid levels, the angled design can more effectively contact the liquid at the bottom of the container, ensuring maximum liquid extraction and reducing waste.
[0049] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A manual liquid preparation device, characterized in that, include: A liquid storage tank (100) is provided. One end of the liquid storage tank (100) is connected to a suction tube (200), and the other end is connected to an air bladder (300). The air bladder (300) is used to provide power for liquid intake and discharge. The end of the liquid storage tank (100) near the air bladder (300) is set as the top. An air hole (400) is provided on the top surface of the liquid storage tank (100). The air hole (400) is opened and closed by a sealing unit. A valve (600) is provided at the connection between the liquid storage tank (100) and the suction tube (200). Scale lines are marked on the side surface of the liquid storage tank (100).
2. The manual liquid preparation device according to claim 1, wherein The sealing unit includes a check valve (500). When the check valve (500) is in a first state, there is a gap between the check valve (500) and the air hole (400). When the check valve (500) is in a second state, the check valve (500) and the air hole (400) are sealed together.
3. The manual liquid preparation device according to claim 2, wherein In the first state, the airbag (300) contracts, and the check valve (500) includes a movement state in which it moves toward one end away from the suction tube (200).
4. The manual liquid preparation device according to claim 2, wherein In the second state, the airbag (300) is inflated, and the check valve (500) includes a movement state in which it moves toward one end of the suction tube (200).
5. The manual liquid preparation device according to claim 1, wherein The liquid storage tank (100) is equipped with a handle (700).
6. The manual liquid preparation device according to claim 1, wherein The suction tube (200) is made of at least high-density polyethylene, polypropylene, fluorinated ethylene propylene copolymer or polytetrafluoroethylene.
7. The manual liquid preparation device according to claim 5, wherein The length of the suction tube (200) is 200mm-500mm, and the radius is 5mm-10mm. 8.The manual liquid preparation device according to claim 1, wherein The height of the liquid storage tank (100) is 200-300mm and the radius is 50-100mm. The height of the airbag (300) is 100-300mm and the radius is 20mm-30mm.
9. The manual liquid preparation device according to claim 1, wherein The valve (600) is made of at least polytetrafluoroethylene, soluble polytetrafluoroethylene, or polyetheretherketone.
10. The manual liquid preparation device according to claim 1, characterized in that, The end of the suction tube (200) away from the liquid storage tank (100) is set at a 45° angle.