Clean liquid sampling device

Abstract

The utility model provides a clean liquid sampling device which comprises a clean sampling bottle, a bottle cap, a sampling tube and a sampler, the sampling tube extends into the clean sampling bottle through a first connecting port on the bottle cap, the sampler is communicated with the inside of the clean sampling bottle through a second connecting port on the bottle cap, and the sampling tube extends into the clean sampling bottle through the second connecting port on the bottle cap. And when the sampler sucks a sample, air in the clean sampling bottle and the sampling tube is pumped out. And through the sampling tube and the sampler in the device, the pollution risk of the external environment to the sample is effectively reduced. Compared with direct liquid pouring or using of a disposable suction tube or a pipette, the device can more effectively protect the sample from being influenced by external pollutants, and the cleanliness and reliability of sampling are improved. The sampling device has the advantages of high efficiency, stability and reliability in practical application, and can meet the requirements of users on sampling efficiency and precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling devices, and in particular relates to a clean liquid sampling device. Background Art

[0002] Electronic-grade high-purity chemicals have low metal ion content, usually measured in ppb or even ppt levels, and the liquid particle content of the materials themselves is also in a very low range. In order to ensure the quality of the products, the filling environment is generally filled directly from the production equipment kettle into a high-purity clean barrel in a Class 100 filling cabinet and sealed until the barrel is opened and used in the clean area of ​​the chip factory client. However, metal ion and particulate impurity pollution is everywhere, and the sources of introduction can be from the production environment, the chemicals themselves, and also include the pollution caused by the precipitation of the filling container itself. Although the containers holding the material solution are all high-purity clean barrels, it does not mean that the clean barrels will not have problems. Because of the large number of barrels used in mass production, it is impossible to inspect every barrel, so it is particularly important to check whether the clean barrels are qualified.

[0003] Conventional sampling is usually done by pouring liquid directly from the barrel into a clean sampling bottle or opening the barrel lid, and sampling is performed using disposable straws, pipettes, etc. However, there are certain disadvantages. For example, pouring liquid directly from the barrel may cause spillage. Using disposable straws or pipettes, in addition to the substandard cleanliness of the material and the long-term exposure of the barrel lid, the sampling environment may be contaminated. Conventional ICP-MS metal ion detection and liquid particle size detection require at least 200 to 500 milliliters of sample, while a single pipette can only sample a few milliliters, which is extremely inconvenient. During sampling, there is a situation where the staff holds the sampling instrument and the sampling is unstable. Therefore, a clean liquid sampling device is needed. Utility Model Content

[0004] In order to solve all or part of the problems of the above prior art, the utility model provides a clean liquid sampling device, which realizes an efficient sampling process while keeping the sampling clean through specially designed clean sampling bottles and samplers.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A clean liquid sampling device comprises a clean sampling bottle, a bottle cap, a sampling tube and a sampler, wherein the sampling tube extends into the clean sampling bottle through a first connection port on the bottle cap, and the sampler is connected to the clean sampling bottle through a second connection port on the bottle cap. When the sampler absorbs the sample, the air in the clean sampling bottle and the sampling tube is extracted. The sampling tube and the sampler in the device effectively reduce the risk of contamination of the sample by the external environment. Compared with direct liquid pouring or using a disposable pipette or pipette, this device can more effectively protect the sample from the influence of external contaminants and improve the cleanliness and reliability of sampling.

[0007] The sampler includes a sampling barrel, a sampling piston and a piston rod arranged in the sampling barrel; a labor-saving structure is arranged in the sampler, and a telescopic end of the labor-saving structure is connected to the sampling piston. The sampler is provided with a sampling piston and a piston rod. This design can ensure that the piston can move accurately during sampling, thereby accurately controlling the sampling amount. The design of the labor-saving structure makes it easier and more convenient to operate the sampler.

[0008] The labor-saving structure is a limit rod arranged on the sampling piston, one end of the limit rod is connected to one side of the sampling piston, and the other end passes through one end of the sampling tube, and an elastic member is sleeved on the limit rod, one end of the elastic member is connected to the sampling piston, and the other end is connected to the sampling tube. The elastic member sleeved on the limit rod can provide appropriate feedback force, which helps to reduce the force applied by the operator, thereby achieving a labor-saving effect.

[0009] The sampling device also includes an auxiliary extraction component, which includes a support plate and an adsorption flap. One end of the support plate is sleeved on the outer circumference of the sampling tube, and the other end is movably connected to the adsorption flap. The flip angle range between the support plate and the adsorption flap is 0-270°. The design of the auxiliary extraction component can ensure that the sampler remains stable during the sampling process. The sleeve connection of the support plate and the active connection of the adsorption flap effectively support and stabilize the position of the sampler, prevent shaking and instability during the sampling process, thereby improving the precision and accuracy of sampling.

[0010] The bottom surface of the adsorption flap is evenly provided with a plurality of adsorption members; the adsorption members are suction cups. The adsorption force of the adsorption members can help fix the auxiliary extraction component on the working surface to prevent accidental movement or sliding during operation.

[0011] The auxiliary extraction assembly further includes a retractable support member, which includes two retractable rods and a bottom plate, one end of the retractable rod is connected to the support plate, and the other end is connected to the bottom plate, and a retractable member is arranged inside the retractable rod. The design of the retractable support member can increase the stability of the auxiliary extraction assembly. By adjusting the length of the retractable rod, a stable supporting relationship between the support plate and the working surface can be ensured to prevent shaking or tilting during operation.

[0012] A first receiving groove for accommodating the adsorption flap is provided on one side outer wall of the support plate, and the adsorption flap is installed in the first receiving groove through a rotatable connecting member, and the adsorption flap can rotate around the support plate. This design effectively utilizes the space on one side of the support plate, neatly storing the adsorption flap in the groove, making the overall structure of the sampling device more compact and saving space.

[0013] The first locking mechanism is provided on both sides of the adsorption flap, and the inner wall of the first receiving groove is provided with a second locking mechanism matching the first locking mechanism. When the adsorption flap is received in the first receiving groove, the first locking mechanism and the second locking mechanism are locked. When the adsorption flap is locked in the receiving groove, its position will be relatively fixed, reducing collision or friction caused by movement or swinging, thereby extending the service life of the component.

[0014] A second receiving groove for accommodating the retractable support member is provided on the inner wall of the first receiving groove, and one end of the retractable support member is movably connected to the connecting end in the second receiving groove; the retractable support member is in an extended state when in use, and is in a retracted state in the second receiving groove when stored. The support member can be retracted into the receiving groove, saving space. The support member is protected by the groove wall in the retracted state, reducing the risk of damage.

[0015] The bottle cap includes a first connector and a second connector that are detachably connected. The sampling tube extends into the inner cavity of the clean sampling bottle through a first connection port on the first connector, and the first connection port is a through hole; the second connector is threadedly connected to the opening of the clean sampling bottle, and the second connection port on the second connector is detachably connected to the sampler. Through the detachably connected first connector and second connector, the sampling tube can be easily extended into the inner cavity of the clean sampling bottle while maintaining good sealing, which provides convenience for sampling operations.

[0016] The utility model has at least the following beneficial effects:

[0017] A clean liquid sampling device is provided. Through the design of a clean sampling bottle and a sampler, the sampling volume can be accurately controlled, while the risk of contamination of the sample by the external environment is effectively reduced, thereby improving the cleanliness and reliability of the sampling. The built-in labor-saving structure makes it easier and more convenient to operate the sampler, improving the user experience. The design of the auxiliary extraction component ensures the stability of the sampler, further improving the precision and accuracy of sampling. The retractable support effectively prevents the occurrence of shaking or tilting. The compact storage slot and reliable locking mechanism extend the service life of the components and improve the durability of the overall device. The detachable connection design of the bottle cap makes the replacement operation easier, further improving the convenience and practicality of the operation. These characteristics make the sampling device have the advantages of high efficiency, stability and reliability in practical applications, meeting the user's requirements for sampling efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram from a first perspective of a clean liquid sampling device according to an embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram from a second viewing angle of a clean liquid sampling device according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the bottle cap and the sampler in the embodiment of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the auxiliary extraction component in the embodiment of the utility model.

[0023] Figure 5 The embodiment of the utility model provides Figure 4 A schematic diagram of the enlarged structure in the middle.

[0024] Figure markings: 1-clean sampling bottle; 2-bottle cap; 201-first connecting piece; 2011-first connecting port; 202-second connecting piece; 2021-second connecting port; 3-sampling tube; 4-sampler; 401-sampling cylinder; 402-piston rod; 4031-limiting rod; 4032-elastic piece; 501-support plate; 502-adsorption flap; 5021-adsorption piece; 5022-first locking mechanism; 503-retractable support piece; 5031-retractable rod; 5032-bottom plate; 504-first storage slot; 5042-second locking mechanism; 505-second storage slot. DETAILED DESCRIPTION

[0025] The technical solutions in the specific embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] In the present utility model embodiment, combined with reference Figure 1-Figure 5 As shown, a clean liquid sampling device comprises a clean sampling bottle 1, a bottle cap 2, a sampling tube 3 and a sampler 4. In order to ensure the safety of operation and the accuracy of sampling, the bottle cap 2 and the opening of the clean sampling bottle 1 are detachably connected to ensure the sealing. The sampling tube 3 extends into the clean sampling bottle 1 through the first connecting port 2011 on the bottle cap 2, and is about 2.5 mm away from the bottle mouth of the clean sampling bottle 1. The sampler 4 is connected to the clean sampling bottle 1 through the second connecting port 2021 on the bottle cap 2. This design enables the vacuum operation to be effectively performed during the sampling process to ensure the purification of the sampling. In the structure of the bottle cap 2, the first connecting member 201 and the second connecting member 202 are both detachably connected, which is convenient for cleaning and replacement. The second connecting member 202 is threadedly connected to the opening of the clean sampling bottle 1 to ensure that no leakage occurs during the operation. The first connecting member 201 is designed with a through hole to facilitate the smooth passage of the sampling tube 3 and accurately extend into the clean sampling bottle 1, thereby ensuring the accuracy and reliability of sampling. In other embodiments, the bottle cap 2 may also adopt other structures. When the sampler 4 is used to absorb the sample, the sample is collected by extracting the air in the clean sampling bottle 1 and the sampling tube 3. In this embodiment, the sampling tube 3 uses a low-precipitation PFA material tube (soluble polytetrafluoroethylene) to ensure the cleanliness of the flow line and minimize the risk of contamination to the sample to be tested caused by the material extraction device.

[0028] The sampler 4 includes a sampling barrel 401 and a sampling piston and a piston rod 402 arranged in the sampling barrel 401. In order to improve the operating efficiency, a labor-saving structure is arranged in the sampler 4, and a telescopic end of the labor-saving structure is connected to the sampling piston. In the present embodiment, the labor-saving structure is a limit rod 4031 arranged on the sampling piston, one end of the limit rod 4031 is connected to one side of the sampling piston, and the other end passes through one end of the sampling barrel 401. An elastic member 4032 is sleeved on the limit rod 4031, one end of the elastic member 4032 is connected to the sampling piston, and the other end is connected to the sampling barrel 401, thereby forming a stable support and limit mechanism. In the present embodiment, the elastic member 4032 is specifically a spring. Through this design, the user can more easily push the sampling piston to achieve the sampling operation.

[0029] The sampler 4 is also equipped with an auxiliary extraction component to further enhance the convenience of operation. The component specifically includes a support plate 501, an adsorption flap 502 mounted on the support plate 501, and a retractable support member 503. One end of the support plate 501 is sleeved on the outer periphery of the sampling tube 401, and the other end is movably connected to the adsorption flap 502. The flip angle range between the support plate 501 and the adsorption flap 502 is 0-270°, and a flip angle of 90° provides stable support for the entire sampler 4. A plurality of adsorption members 5021 are evenly arranged on the bottom surface of the adsorption flap 502. These adsorption members 5021 can enhance the fixing effect of the flap and the mouth of the clean sampling bottle 1, and ensure stability during the sampling process. In this embodiment, the adsorption member 5021 specifically adopts a suction cup. The retractable support member 503 is composed of two retractable rods 5031 and a bottom plate 5032. One end of the two retractable rods 5031 is connected to the support plate 501, and the other end is connected to the bottom plate 5032. The retractable rods 5031 are equipped with retractable parts inside so as to be adjusted as needed. This design makes the sampler 4 more convenient to operate, and the user can complete the sampling process without too much effort. The synergistic effect of the labor-saving structure and the auxiliary extraction component improves the efficiency and operability of the entire sampling device.

[0030] A first receiving groove 504 is provided on the outer wall of one side of the support plate 501 for accommodating the adsorption flap 502. The adsorption flap 502 is installed in the first receiving groove 504 through a rotatable connector, which allows the adsorption flap 502 to easily rotate around the support plate 501. This rotatable design provides users with greater flexibility, allowing the sampler 4 to be effectively operated at different angles and positions. A first locking mechanism 5022 is provided on both sides of the adsorption flap 502, and a second locking mechanism 5042 matching it is provided on the inner wall of the first receiving groove 504. When the adsorption flap 502 is received in the first receiving groove 504, the first locking mechanism 5022 and the second locking mechanism 5042 are locked with each other to ensure that the adsorption flap 502 is firmly mounted on the support plate 501. In this embodiment, the first locking mechanism 5022 is a snap-in groove, and the second locking mechanism 5042 is a spring groove. A positioning spring is arranged in the spring groove, and a positioning conical rod is fixedly installed at one end of the positioning spring. When the positioning conical rod is stored, it is snap-fitted with the snap-in groove. In addition, a second receiving groove 505 is also provided on the inner wall of the first receiving groove 504 for accommodating the retractable support member 503. One end of the retractable support member 503 is movably connected to the connecting end in the second receiving groove 505, so that the retractable support member 503 can switch freely between the retracted state and the extended state. When the retractable support member 503 is stored in the second receiving groove 505, the telescopic rod 5031 is in a retracted state; and when it is needed, the retractable support member 503 can be easily extended to the required length to provide a stable support for the sampling operation. These combined designs greatly improve the portability, operability and stability of the sampler 4. The design of the locking mechanism ensures that the adsorption flap 502 is firmly fixed, while the provision of the retractable support member 503 enables the sampler 4 to freely adjust its length as required to adapt to different sampling environments and operating requirements.

[0031] The sampling device of the utility model adopts a labor-saving structural design and is equipped with an auxiliary extraction component, which allows the user to push the sampling piston more easily to achieve the sampling operation, thereby improving the convenience and efficiency of the operation. The sampler 4 support plate 501 is equipped with a retractable support 503 and an adsorption flap 502, which can be adjusted in length and angle as needed, providing a stable support, and the rotatable design increases the flexibility of operation, so that effective operations can be performed at different angles and positions. The combined design of the sampler 4 makes it easy to carry and move, adapt to different sampling environments and operating requirements, and improves its portability and applicability.

[0032] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A clean liquid sampling device, characterized in that: The clean sampling bottle (1) comprises a clean sampling bottle (1), a bottle cap (2), a sampling tube (3) and a sampler (4); the sampling tube (3) extends into the clean sampling bottle (1) through a first connecting port (2011) on the bottle cap (2); the sampler (4) is connected to the clean sampling bottle (1) through a second connecting port (2021) on the bottle cap (2); when the sampler (4) absorbs a sample, the air in the clean sampling bottle (1) and the sampling tube (3) is extracted.

2. The sampling device according to claim 1, characterized in that: The sampler (4) comprises a sampling barrel (401), a sampling piston and a piston rod (402) arranged in the sampling barrel (401); a labor-saving structure is arranged in the sampler (4), and a telescopic end of the labor-saving structure is connected to the sampling piston.

3. The sampling device according to claim 2, characterized in that: The labor-saving structure is a limit rod (4031) arranged on the sampling piston, one end of the limit rod (4031) is connected to one side of the sampling piston, and the other end passes through one end of the sampling tube (401), and an elastic member (4032) is sleeved on the limit rod (4031), one end of the elastic member (4032) is connected to the sampling piston, and the other end is connected to the sampling tube (401).

4. The sampling device according to claim 2, characterized in that: The sampling device also includes an auxiliary extraction component, which includes a support plate (501) and an adsorption flap (502). One end of the support plate (501) is sleeved on the outer circumference of the sampling tube (401), and the other end is movably connected to the adsorption flap (502). The flip angle range between the support plate (501) and the adsorption flap (502) is 0-270°.

5. The sampling device according to claim 4, characterized in that: A plurality of adsorption members (5021) are evenly arranged on the bottom surface of the adsorption flap (502); the adsorption members (5021) are suction cups.

6. The sampling device according to claim 4, characterized in that: The auxiliary extraction component also includes a retractable support member (503), and the retractable support member (503) includes two retractable rods (5031) and a bottom plate (5032), one end of the retractable rod (5031) is connected to the support plate (501), and the other end is connected to the bottom plate (5032), and a retractable member is arranged inside the retractable rod (5031).

7. The sampling device according to claim 6, characterized in that: A first receiving groove (504) for accommodating the adsorption flap (502) is provided on one side outer wall of the support plate (501); the adsorption flap (502) is installed in the first receiving groove (504) via a rotatable connecting member; and the adsorption flap (502) can rotate around the support plate (501).

8. The sampling device according to claim 7, characterized in that: A first locking mechanism (5022) is provided on both sides of the adsorption flap (502), and a second locking mechanism (5042) matching the first locking mechanism (5022) is provided on the inner wall of the first storage groove (504). When the adsorption flap (502) is stored in the first storage groove (504), the first locking mechanism (5022) and the second locking mechanism (5042) are locked.

9. The sampling device according to claim 7, characterized in that: A second receiving groove (505) for accommodating the retractable support member (503) is provided on the inner wall of the first receiving groove (504); one end of the retractable support member (503) is movably connected to a connecting end in the second receiving groove (505); the retractable support member (503) is in an extended state when in use, and is in a retracted state in the second receiving groove (505) when stored.

10. The sampling device according to claim 1, characterized in that: The bottle cap (2) comprises a first connecting piece (201) and a second connecting piece (202) which are detachably connected; the sampling tube (3) extends into the inner cavity of the clean sampling bottle (1) through a first connecting port (2011) on the first connecting piece (201); the first connecting port (2011) is a through hole; the second connecting piece (202) is threadedly connected to the opening of the clean sampling bottle (1); and the second connecting port (2021) on the second connecting piece (202) is detachably connected to the sampler (4).

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