Alcohol gauze storage device
Patent Information
- Application Number
- CN202522359785.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-11-06
AI Technical Summary
[0003]相关技术中,酒精纱布的储存容器通常为金属罐或金属桶,容器内的酒精纱布大小不一,在需要取用的酒精纱布的体积较小时,医护工作者在取用时需要用镊子或手指伸入至容器内,操作不便,且取用过程易对酒精纱布造成污染
[0015] With the above technical solution, when using the alcohol gauze storage device of this application, larger alcohol gauze is stored in the first cavity, and smaller alcohol gauze is stored in the second cavity. When alcohol gauze in the first cavity needs to be retrieved, the cover is opened, and it is taken from the opening communicating with the first cavity without affecting the alcohol gauze in the second cavity. Similarly, retrieving alcohol gauze from the second cavity will not affect alcohol gauze in the first cavity or other second cavities.
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Figure CN224767401U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical technology, and more specifically, to an alcohol gauze storage device. Background Technology
[0002] Alcohol gauze usually refers to sterile gauze soaked in medical alcohol. It is commonly used for skin disinfection, instrument surface cleaning, etc., and is widely used in medical, nursing, laboratory and industrial cleaning fields.
[0003] In related technologies, the storage containers for alcohol gauze are usually metal cans or metal drums. The size of the alcohol gauze in the containers varies. When the volume of alcohol gauze to be taken is small, medical staff need to use tweezers or fingers to reach into the container when taking it, which is inconvenient and the process of taking it can easily contaminate the alcohol gauze. Utility Model Content
[0004] In order to at least address some of the deficiencies mentioned in the related technologies, this application provides an alcohol gauze storage device.
[0005] To achieve the above objectives, this application provides an alcohol gauze storage device, including a housing and a separator. The housing includes a container and a lid. A storage cavity is formed inside the container, and the storage cavity has at least two openings communicating with the outside. The lid is fastened to the openings to seal the storage cavity. The separator includes a main separator and a secondary separator, both of which have through holes. The main separator is disposed within the storage cavity and divides the storage cavity into at least two first cavities, each of which communicates with at least one of the openings. The secondary separator is disposed within the first cavity and divides the first cavity into at least two second cavities, each of which communicates with at least a portion of the openings.
[0006] Furthermore, the tank is cylindrical, and the main partition is horizontally disposed inside the tank, dividing the storage cavity inside the tank into two first cavities in the vertical direction.
[0007] Furthermore, the main partition is located in the middle of the tank, and the two first cavities have the same size.
[0008] Furthermore, the secondary partition is disposed vertically within the first cavity, and horizontally divides the first cavity into two second cavities.
[0009] Furthermore, one end of the secondary partition abuts against the main partition, and the end of the secondary partition away from the main partition extends to the opening. The secondary partition is positioned in the middle of the first cavity, and the two second cavities have the same size.
[0010] Furthermore, the cover includes a first end cap, which is sealed and fastened to the opening communicating with the first cavity. A retrieval port is provided at the center of the first end cap, and a hinge plate is provided at the retrieval port, the hinge plate being capable of sealing and covering the retrieval port.
[0011] Furthermore, the cover includes a second end cap, which is sealed and fastened to the opening communicating with the second cavity. The second end cap has multiple openings communicating with the second cavity, each opening corresponding to one of the second cavities, and each opening is sealed with an opening / closing plate.
[0012] Furthermore, the hinged plate is hinged to the pick-and-place opening. Alternatively, the hinged plate is pressed against the pick-and-place opening.
[0013] Furthermore, the projected area of the pick-up and put-out port in the vertical direction is smaller than the projected area of the second cavity in the vertical direction.
[0014] Furthermore, the tank body is provided with an observation window, which is vertically oriented, and its two ends extend to positions close to the lid. The tank body is also provided with graduation lines near the observation window.
[0015] With the above technical solution, when using the alcohol gauze storage device of this application, larger alcohol gauze is stored in the first cavity, and smaller alcohol gauze is stored in the second cavity. When alcohol gauze in the first cavity needs to be retrieved, the cover is opened, and it is taken from the opening communicating with the first cavity without affecting the alcohol gauze in the second cavity. Similarly, retrieving alcohol gauze from the second cavity will not affect alcohol gauze in the first cavity or other second cavities.
[0016] Furthermore, since the first cavity and the second cavity are separated by a partition with through holes, alcohol can flow freely within the first cavity and the second cavity, ensuring that the alcohol gauze in each cavity is fully soaked in alcohol.
[0017] The alcohol gauze storage device of this application allows for easy access to the appropriate size of alcohol gauze simply by opening the lid, eliminating the need to use tweezers or fingers to reach into the device. This makes the process more convenient and reduces the risk of contaminating other alcohol gauze inside the device.
[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of the alcohol gauze storage device provided in the embodiments of this application from one perspective; Figure 2 A schematic diagram of the structure of the alcohol gauze storage device provided in the embodiments of this application from another perspective; Figure 3 This is a schematic diagram of the structure of the cover provided in an embodiment of this application; Figure 4 A structural schematic diagram of the cover provided in another embodiment of this application; Figure 5 This is a structural schematic diagram of the cover provided in an embodiment of this application from another perspective.
[0021] icon: 100-Shell; 110-Tank body; 111-Observation window; 112-Scale line; 120-Lid; 121-Opening plate; 122-Hinge plate; 200-Divider; 210-Main partition; 220-Secondary partition; 310-First cavity; 320-Second cavity. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0025] This embodiment provides an alcohol gauze storage device to solve the problems in related technologies where alcohol gauze is inconvenient to use and the use process is prone to contamination.
[0026] Please see Figure 1 , Figure 2 This embodiment provides an alcohol gauze storage device, including a housing 100 and a separator 200. The housing 100 includes a container 110 and a lid 120. The container 110 has a storage cavity with at least two openings communicating with the outside. The lid 120 is fastened to the openings to seal the storage cavity. The separator 200 includes a main separator 210 and a secondary separator 220, both of which have through holes. The main separator 210 is disposed within the storage cavity and divides the storage cavity into at least two first cavities 310, each of which communicates with at least one opening. The secondary separator 220 is disposed within the first cavity 310 and divides the first cavity 310 into at least two second cavities 320, each of which communicates with at least a portion of the opening.
[0027] Specifically, when using the alcohol gauze storage device of this embodiment, larger alcohol gauze, such as that used for large-area wiping or disinfection before surgical draping, is placed in the first cavity 310 separated by the main partition 210. Smaller alcohol gauze, such as that used for spot disinfection of the skin before injection or cleaning of blood collection sites, is placed in the second cavity 320 further separated by the secondary partition 220. All the alcohol gauze in the cavities is soaked in medical alcohol at the bottom of the container 110. When the alcohol gauze storage device is shaken or inverted, the alcohol flows freely through the through holes on the partition 200, ensuring that the gauze in each cavity is always fully soaked.
[0028] When taking large-sized gauze, open the cover 120 corresponding to the opening communicating with the first cavity 310, and take out the required gauze directly from this opening. The other cavities remain sealed and undisturbed. When taking small-sized gauze, open the cover 120 corresponding to the opening communicating with the target second cavity 320, and take it directly from this opening without needing to go deep into the container. The other cavities remain closed to avoid exposure.
[0029] After each use, immediately close the corresponding cover 120. Since all the chambers are interconnected through the through holes, alcohol can continue to flow between the chambers, keeping the gauze moist. Even if a certain chamber is frequently opened, the other chambers will still maintain a high level of cleanliness and alcohol saturation.
[0030] In this embodiment, alcohol gauze of different sizes and uses is physically separated to avoid mixing. Medical staff can quickly identify and retrieve the required size, reducing search time. This is particularly suitable for high-efficiency scenarios such as emergency rooms, operating rooms, and blood collection stations. Furthermore, traditional methods require hands or tweezers to be inserted into the container, easily introducing dust, bacteria, or grease, contaminating the remaining gauze. This embodiment uses independent openings and partial openings, exposing only the target cavity, while the remaining gauze remains in a closed, sterile environment, enhancing safety and preventing contamination of other gauze. Moreover, this embodiment eliminates the need for deep insertion during use, reducing prolonged contact between hands and alcohol vapor, preventing accidental retrieval or dropping due to poor visibility or operational inconvenience, and improving the comfort and safety of medical staff.
[0031] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the tank 110 is cylindrical, and the main partition 210 is horizontally disposed inside the tank 110, dividing the storage chamber inside the tank 110 into two first chambers 310 in the vertical direction. The main partition 210 has through holes, which allow the alcohol liquid to slowly permeate, and more importantly, allow the alcohol vapor to diffuse freely between the upper and lower chambers.
[0032] When only the top cover is opened to access the upper gauze, the upper cavity is briefly exposed to air, causing some alcohol to evaporate. At this time, the saturated alcohol vapor in the lower cavity diffuses upwards through the micropores, rapidly replenishing the vapor concentration in the upper cavity and effectively preventing the upper gauze from drying out due to the brief opening. Similarly, when only the bottom cover is opened to access the lower gauze, the alcohol vapor in the upper cavity can be replenished downwards through the micropores, maintaining a moist environment in the lower layer.
[0033] When both lids are closed, the entire can 110 forms a near-sealed system, and the alcohol vapor is dynamically balanced between the upper and lower chambers, significantly reducing the overall evaporation rate. Regardless of which layer is used alone, the other layer is not affected by drying, avoiding the drawbacks of traditional single-chamber cans where "all layers dry when opened" or "the upper layer is dry and the lower layer is wet," ensuring that the gauze remains effectively soaked in alcohol throughout the entire cycle.
[0034] In one embodiment, exemplarily, such as Figure 1 , Figure 2As shown, the main partition 210 is located in the middle of the tank 110, and the two first cavities 310 have the same size. The frequency of use of large and small size alcohol gauze may vary dynamically depending on the department or the same procedure. For example, small gauze is used more frequently in the blood collection station; large gauze is more commonly used in the dressing room; and both need to be used simultaneously during surgical preparation. Since the upper and lower cavities are the same size, medical staff can freely allocate gauze sizes according to actual needs, and dual backup storage of the same size is also supported.
[0035] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the secondary partition 220 is vertically positioned within the first cavity 310, dividing it horizontally into two second cavities 320. Even within the same size level, there may be different needs for different purposes or cleanliness levels. For example, there may be alcohol gauze for skin disinfection, lint-free alcohol gauze for cleaning precision instruments and electronic equipment, or spare gauze of different brands and alcohol concentrations. Within the upper first cavity 310, the vertical secondary partition 220 divides it into left and right second cavities 320, allowing for the separate storage of different types of small gauze to prevent mixing. Similarly, the lower large gauze area can also be partitioned as needed.
[0036] Even within the same cavity, if multiple types of gauze are mixed together, they need to be searched and identified when needed, which can easily lead to mis-picking or dropping. Each second cavity 320 has an independent opening and cover 120, allowing medical staff to directly access the target type without having to rummage through other gauze, which is especially suitable for operation while wearing gloves or in low-light environments.
[0037] The secondary partition 220 also has micropores or through holes, forming a three-dimensional interconnected network with the main partition 210, allowing alcohol liquid to slowly permeate through the bottom. Alcohol vapor can freely diffuse between the upper and lower chambers and between the left and right chambers, ensuring that the gauze in all the secondary chambers 320 is continuously and evenly moistened. Although physically separated, the humid environment is shared, avoiding the problem of one chamber drying out due to traditional multi-tank packaging.
[0038] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, one end of the secondary partition 220 abuts against the main partition 210, and the end of the secondary partition 220 away from the main partition 210 extends to the opening. The secondary partition 220 is located in the middle of the first cavity 310, and the two second cavities 320 are of the same size. The two second cavities 320 have the same volume and can be freely allocated for different purposes, such as placing skin disinfection gauze in the left cavity and instrument cleaning gauze in the right cavity; or placing the same type in both to achieve double backup. There is no primary or secondary distinction, avoiding uneven space leading to one side being frequently exhausted while the other is idle. Consequently, medical staff do not need to remember "which side has more and which side has less," reducing cognitive burden.
[0039] The secondary partition 220 extends from the main partition 210 to the edge of the opening, forming a complete vertical partition from bottom to top. Together with the inner wall of the tank 110 and the main partition 210, it encloses two independent, closed sub-cavities. Even if one side cover 120 is opened, contaminants cannot bypass the secondary partition 220 to enter the other side. This avoids interference between the two second cavities 320, meets the strict isolation requirements of highly sensitive areas such as operating rooms and aseptic dispensing areas, and effectively prevents cross-contamination caused by accidental contact or airflow disturbance.
[0040] In one embodiment, exemplarily, such as Figure 4 As shown, the cover 120 includes a first end cap, which is sealed and fastened to the opening of the first cavity 310. A retrieval port is provided at the center of the first end cap, and a hinge plate 122 is provided at the retrieval port, which can seal and close to the retrieval port. In related technologies, single-cavity devices require the end cap to be completely lifted each time gauze is retrieved, exposing the entire cavity to the air, which may lead to rapid dissipation of alcohol vapor; easy entry of dust, droplets, and microorganisms; and contamination of unused gauze. In this embodiment, only the hinge plate 122 at the central retrieval port is opened, while the main body of the first end cap remains sealed and fastened, covering the entire opening. Only the target cavity is briefly exposed, while other cavities remain completely unaffected. This effectively reduces alcohol evaporation, significantly extends the effective storage time of alcohol, minimizes the contamination exposure area, and conforms to aseptic operation principles.
[0041] In this embodiment, the hinge plate 122 has a finger-pressure protrusion at its edge, making it easy to operate while wearing gloves. It can be opened by pressing with the thumb of one hand, while the other fingers support the end cap, without the need for tools. The hinge structure ensures smooth opening and closing, automatic reset, or magnetic closure, making it more convenient to use.
[0042] The first end cap is completely sealed, preventing the cavity from exchanging with the external environment. After the hinge plate 122 is closed, the opening is sealed again, making the cavity almost completely sealed. Even with frequent use, a high concentration of alcohol vapor can still be maintained inside the cavity. The micropores on the main partition 210 and the secondary partition 220 continuously replenish the alcohol vapor. The small openings and quick opening and closing minimize vapor loss, keeping the gauze moist for a long time. This avoids the problem of not daring to drink anything due to repeated opening and ensures that the gauze used each time has effective sterilization capabilities.
[0043] In one embodiment, exemplarily, such as Figure 3 , Figure 5As shown, the cover 120 includes a second end cap, which is sealed and fastened to the opening of the second cavity 320. The second end cap has multiple access ports communicating with the second cavities 320, each corresponding to one of the second cavities 320. Each access port is sealed with an opening / closing plate 121. Each second cavity 320 has an independent opening, an independent access port, and an independent opening / closing plate 121. When using gauze from a particular cavity, only the corresponding opening / closing plate 121 is opened; the opening / closing plates 121 of other cavities, the second end cap body, and the entire container 110 remain sealed. In this embodiment, the access paths to each cavity are physically isolated and do not communicate with each other. This avoids cross-contamination, meets high-level infection control requirements, and is particularly suitable for storing wiping materials with different uses, cleanliness levels, or chemical compositions.
[0044] Each hinge plate 121 is directly opposite the second cavity 320 below, and its position is fixed. In actual use, the purpose of different cavities can be distinguished by color markings, icons, and embossed textures, and accurate identification is possible even when operating with gloves on. The hinge plate 121 can be designed to open by pressing, close magnetically, or lock with a snap-fit, depending on actual needs, to prevent accidental opening of non-target cavities due to accidental contact, thereby improving operational efficiency and safety.
[0045] In one embodiment, exemplarily, such as Figure 3 , Figure 5 As shown, the hinged plate 121 is hinged to the access port. Alternatively, the hinged plate 121 is pressed against the access port. When the hinged plate 121 is closed, the access port is tightly sealed by a sealing ring, soft rubber gasket, or interference fit, avoiding continuous evaporation caused by traditional open openings or simple covers, effectively blocking the intrusion of dust, droplets, and microorganisms, and ensuring the sterility of the gauze.
[0046] In detail, such as Figure 3 As shown, the hinged plate 121 is hinged to the end cap, preventing it from falling off, being misplaced, or getting mixed up. When operating with one hand, it automatically hovers or returns to its original position by its own weight or magnetic attraction after opening, eliminating the need to hold the cover. This is suitable for wearing gloves, operating with one hand, or emergency situations. Combined with magnetic attraction, springs, or elastic materials, it can also achieve automatic closing upon releasing the hand, preventing the hinged plate 121 from being open for an extended period due to operational negligence.
[0047] like Figure 5 As shown, the hinge plate 121 is pressed onto the end cap. The pressing structure can apply greater pre-tightening force, fully compressing the sealing ring. This is more suitable for scenarios with extremely high requirements for controlling alcohol vapor escape, such as long-term storage and low volatility requirements. It can be designed as a double seal or other sealing methods according to actual needs to further improve the protection level. The pressing fit method has no complex structures such as hinges or shafts, and no dead corners for hygiene. The hinge plate 121 can be completely removed for thorough cleaning, disinfection, or replacement. It is simple, suitable for mass production, and cost-effective.
[0048] In one embodiment, exemplarily, such as Figure 3 , Figure 5 As shown, the projected area of the inlet / outlet in the vertical direction is smaller than the projected area of the second chamber 320 in the vertical direction. The alcohol evaporation rate is directly proportional to the surface area of the liquid exposed to air. As the only channel between the chamber and the outside world, the size of the inlet / outlet directly determines the evaporation intensity. Since the projected area of the inlet / outlet is smaller than the cross-sectional area of the second chamber 320, the actual open area of the inlet / outlet is smaller. Even when the opening / closing plate 121 is fully open, most of the liquid surface inside the chamber is still covered by the end cap, and gas is exchanged with the outside world only through the smaller inlet / outlet, significantly reducing the alcohol vapor escape rate. This prolongs the effective alcohol concentration maintenance time, reduces the frequency of liquid replenishment, and lowers consumable costs.
[0049] Dust, droplets, fibers, and other pollutants are mostly settled by gravity or carried by airflow. Small-diameter inlets create a bottleneck effect, reducing the probability of pollutants entering the cavity. Even if pollutants approach the opening, the small diameter prevents them from falling deep into the cavity. In contrast, large openings easily create convection, accelerating contamination, while small openings form a static pressure buffer zone, allowing slight leakage of internal vapors and creating a positive pressure barrier that further repels external air.
[0050] In one embodiment, exemplarily, such as Figure 1 As shown, an observation window 111 is provided on the container 110. The observation window 111 is vertically oriented, and its two ends extend to positions near the lid 120. A graduation line 112 is also provided on the container 110 near the observation window 111. The observation window 111 extends from near the upper lid to near the lower lid, covering the entire height of the storage cavity. Medical personnel can visually determine the remaining alcohol level in the container without opening any lid 120. The graduation line 112 provides a quantitative reference, facilitating the determination of whether medical alcohol needs to be replenished. Traditional metal containers or opaque plastic containers do not allow for observation of the interior, often resulting in situations where gauze dries out or alcohol is exhausted but is still used. Dry gauze lacks disinfecting effectiveness, posing a risk of infection control failure.
[0051] In actual use, the maximum liquid level, minimum effective liquid level, and intermediate graduations can be marked on the scale line 112. When replenishing alcohol, the amount added can be precisely controlled to avoid alcohol overflow, waste, corrosion of labels, or insufficient saturation of gauze, which would affect the disinfection effect. Although the chambers are separated by the main partition 210 and the secondary partition 220, the liquid level is consistent due to the interconnected micropores. The saturation status of all chambers can be judged through a single observation window 111.
[0052] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An alcohol gauze storage device, characterized by, include: The housing (100) includes a tank (110) and a cover (120). The tank (110) has a storage cavity inside. The storage cavity has at least two openings on the tank (110) that communicate with the outside. The cover (120) is fastened to the openings to seal the storage cavity. A partition (200) includes a main partition (210) and a secondary partition (220), both the main partition (210) and the secondary partition (220) having through holes; the main partition (210) is disposed in the storage cavity and divides the storage cavity into at least two first cavities (310), each of the first cavities (310) communicating with at least one of the openings; the secondary partition (220) is disposed in the first cavity (310) and is used to divide the first cavity (310) into at least two second cavities (320), each of the second cavities (320) communicating with at least a portion of the openings.
2. The alcohol gauze storage device according to claim 1, wherein, The tank (110) is cylindrical, and the main partition (210) is horizontally disposed inside the tank (110), dividing the storage cavity inside the tank (110) into two first cavities (310) in the vertical direction.
3. The alcohol gauze storage device according to claim 2, wherein, The main partition (210) is located in the middle of the tank (110), and the two first cavities (310) have the same size.
4. The alcohol gauze storage device according to claim 1, wherein, The secondary partition (220) is disposed vertically within the first cavity (310) and horizontally divides the first cavity (310) into two second cavities (320).
5. The alcohol gauze storage device according to claim 4, wherein, One end of the secondary partition (220) abuts against the main partition (210), and the end of the secondary partition (220) away from the main partition (210) extends to the opening; The secondary partition (220) is located in the middle of the first cavity (310), and the two second cavities (320) have the same size.
6. The alcohol gauze storage device according to claim 1, wherein, The cover (120) includes a first end cap, and the first end cap is sealed and fastened to the opening through which the first cavity (310) communicates; The first end cap has a pick-and-place opening at its center, and a hinge plate (122) is provided at the pick-and-place opening. The hinge plate (122) can seal and cover the pick-and-place opening.
7. The alcohol gauze storage device according to claim 1, wherein, The cover (120) includes a second end cap, and the second end cap is sealed and fastened to the opening through which the second cavity (320) communicates; The second end cap has multiple openings that communicate with the second cavity (320). Each of the multiple openings corresponds to one of the multiple second cavities (320). Each opening is sealed with an opening and closing plate (121).
8. The alcohol gauze storage device according to claim 7, wherein, The opening and closing plate (121) is hinged to the take-out port; Alternatively, the opening and closing plate (121) is pressed against the take-out port.
9. The alcohol gauze storage device according to claim 7, wherein, The vertical projection area of the pick-up and drop-off port is smaller than the vertical projection area of the second cavity (320).
10. The alcohol gauze storage device according to claim 1, wherein, An observation window (111) is provided on the tank body (110). The observation window (111) is arranged in a vertical direction, and the two ends of the observation window (111) extend to a position close to the cover body (120). The tank body (110) is also provided with a scale line (112) near the observation window (111).