WO2021159457A1 - Container for liquid analysis - Google Patents

Abstract

Disclosed is a container for liquid analysis. The container comprises a first container portion (100) and a second container portion (200), which are joined to each other. A first groove (110), a first through hole (121) and a second through hole (122) are provided in the first container portion (100); a second groove (210) is provided in the second container portion (200); an analysis cavity (300), an inlet channel (330) and an outlet channel (340), which are in communication, are formed in a space between the first groove (110) and the second groove (210); a channel opening from the inlet channel (330) to the analysis cavity (300) and a channel opening from the analysis cavity (300) to the outlet channel (340) are respectively provided on two sides of a line connecting the center of the first through hole (121) and the center of the analysis cavity (300); and the inlet channel (330) comprises a gradually expanding first channel section (301). The first container portion (100) and the second container portion (200) are joined by means of welding and are provided with a welding channel (350), and dust storage spaces (351, 352) are respectively arranged on two sides of the welding channel (350). By providing the dust storage spaces, welding dust generated during a welding process is prevented from entering a container cavity, such that the cleanliness of the container cavity for liquid analysis is guaranteed.

Description

A container for liquid analysis Technical field

This application relates to the technical field of liquid analysis, and in particular to a container for liquid analysis.

Background technique

In the fields of life sciences, medicine and health, food and environmental protection, it is often necessary to analyze the composition of liquids, especially liquids. There are various methods for analyzing liquids, generally including the analysis, separation and detection of liquid samples, such as the separation of protein and peptides in the field of life sciences, the analysis of beverage components in the food field, the research of pharmaceutical components in the pharmaceutical field, and the medical and health Field analysis of body fluids such as urine, plasma and serum, etc.

Optical detection is a commonly used liquid analysis method. It observes the liquid through optical instruments, such as a microscope, to obtain information on the composition of the liquid, and is especially suitable for the analysis of body fluids in the medical and health field. For the optical analysis of liquids, such as urine, there are many prior art container designs, usually shallow containers or test tubes, which are transparent to the light for analysis or their analysis chambers for loading the liquid to be analyzed and for analysis. The part where light needs to be transmitted is transparent to the analysis light. This type of container for analyzing liquids is usually composed of two connected parts, one of which is above the other. The container also includes an inlet for filling the liquid to be analyzed, an outlet for discharging bubbles and excess liquid, and The analysis chamber containing the liquid to be analyzed.

The Chinese utility model patent (application number: 200790000098.4) provides a container for optical analysis of liquid after being centrifuged in a filled state, which is a disposable product. The container is composed of an upper part and a lower part that are joined to each other, including an analysis space for loading the liquid to be analyzed, an inlet hole for filling the liquid to be analyzed, an inlet channel connected between the inlet hole and the analysis space, and for discharging Outlet holes for bubbles and excess liquid, and buffer channels connected between the outlet holes and the analysis space. As a container for analyzing urine, the container can be used with an automatic urine formed component analyzer to perform automatic analysis of urine formed components on a urine sample. The buffer channel of the container is designed in a serpentine shape, which is a design with a larger volume, so that the pipette can inject liquid into the inlet hole at a higher speed when filling liquid without liquid entering the buffer The channel suddenly fills up and overflows. In order to ensure that the liquid flowing to the corners of the container is not discharged through the inlet and outlet holes during centrifugal operation, the container has the inlet and outlet holes away from the corners of the container and is located in the middle container area between two adjacent corners. However, in actual use, it was found that filling the injected liquid to a predetermined length of the buffer channel, such as 2/3 of the buffer channel, would introduce air bubbles into the analysis space when the container was centrifuged. As a result, the inspection cannot be carried out normally. The proper method is to fill the injected liquid to the outlet hole (or a position not more than 1 mm away from the edge of the outlet hole), but this will inevitably cause the liquid to overflow during the centrifugal operation. Since the container has the inlet hole and the outlet hole in the middle container area between two adjacent corners, they are very close to each other, and the liquid overflowing from one or both of them during the centrifugal operation will gather and surround both of them. In addition, when the liquid suction elbow (with a tip of ~2mm) is used to suck out the overflowing liquid, the suction tip of the liquid suction elbow must be closer to one of the two holes, so the hole and the channel connected to it The suction of the liquid inside is greater, and it may happen that in order to suck up the overflow liquid, a part of the liquid in the hole and the channel connected to it is sucked away, which causes the liquid in the analysis space to flow to the channel, which affects the test result. .

A Chinese utility model patent (application number: 201420437092.5) discloses a container for analyzing liquids, comprising a first container part and a second container part joined to each other. The first container part has a first groove and a first through hole. And the second through hole, the second container part is provided with a second groove, the space between the first groove and the second groove forms a communicating analysis cavity, an inlet channel and an outlet channel, and the inlet channel to the channel opening of the analysis cavity The channel openings from the analysis cavity to the outlet channel are respectively distributed on both sides of the connecting line between the first through hole and the center of the analysis cavity, and the inlet channel includes a gradually expanding first channel section. In this patent, the container is welded up and down by ultrasonic, and the structural arrangement of the channel is not suitable for the formation of a clean analysis cavity, especially the welding dust generated during the welding process is easy to accumulate in the analysis cavity; in addition, during the assembly process In this case, the joint surface between the first container part and the second container part is easily interfered, which affects the close fit, resulting in insufficient stability of the liquid volume in the analysis chamber.

Application content

In view of the above-mentioned shortcomings of the prior art, the purpose of this application is to provide a container for analyzing liquids, which can prevent welding dust generated during welding from entering the analysis cavity and ensure the cleanliness of the analysis cavity; After welding with the second container part, the joint surface is effectively bonded to ensure the closeness of the analysis cavity.

The container for analyzing liquid provided in this application includes:

The first container part and the second container part are joined to each other, the first container part has a first groove, a first through hole and a second through hole, and the first through hole is located between the first groove In addition, the second container part has a second groove; the opening of the first groove faces the second container part, the opening of the second groove faces the first container part, and the The space between a groove and the second groove forms a communicating container cavity, an inlet channel and an outlet channel; the first through hole communicates with the inlet channel, and the second through hole communicates with the The exit channel is connected;

The first channel opening from the inlet channel to the container cavity and the second channel opening from the container cavity to the outlet channel are respectively distributed in the connection between the first through hole and the center of the container cavity Both sides of the line

The inlet passage includes a first passage section that gradually expands;

Wherein, the first container part and the second container part are joined by welding and there is a weld bead between the first container part and the second container part, and a first container part is provided on both sides of the weld bead. A dust storage space and a second dust storage space.

In some embodiments, optionally, the first container part includes a first flange, and the first flange is an annular body protruding from the inner surface of the first container part; the second The container part includes an annular groove matched with the first flange, and the weld bead is arranged at the junction of the first flange and the annular groove.

In some embodiments, optionally, a first gap is provided between at least part of the surface of the first flange located between the weld bead and the container cavity and the surface of the annular groove , The first gap forms the first dust storage space.

In some embodiments, optionally, a first flange is provided between at least a part of the surface between the weld bead and the outer side surface of the first container part and the annular groove. Two gaps, the second gap forms the second dust storage space.

In some embodiments, optionally, an extension is provided between the first flange and the outer side surface of the first container part, and the annular groove is away from the side surface of the container cavity and A second flange is formed between the outer side surfaces of the second container part, and a third gap is formed between the extension part and the second flange.

In some embodiments, optionally, the third gap is in communication with the second dust storage space.

In some embodiments, optionally, the first through hole and the second through hole are both adjacent to a side wall of the first flange; the first through hole is adjacent to the middle of the side wall , The second through hole is adjacent to one end of the side wall.

In some embodiments, optionally, the container cavity includes four corners; the first channel opening and the second channel opening are respectively adjacent to the container cavity and close to the first through hole Of the two said corners.

In some embodiments, optionally, the two corners of the container cavity away from the first through hole are rounded corners, and the container cavity is located on the side of the rounded corners. The wall part is curved.

In some embodiments, optionally, the radius of curvature of the arc-shaped side wall portion of the container cavity is not less than 2 mm.

In some embodiments, optionally, the inlet channel includes a curved third channel section, and one end of the third channel section is opened to form the first channel opening; the third channel section is away from the container cavity The side wall part of the center of the body is arc-shaped.

In some embodiments, optionally, the radius of curvature of the arc-shaped side wall portion of the third channel section is not less than 2 mm.

In some embodiments, optionally, the inlet channel further includes a second channel section located between the third channel section and the first channel section, and the first channel section passes from the first channel section. The hole extends toward the second channel section and gradually expands, and the second channel section is a straight channel of equal width.

In some embodiments, optionally, the outlet channel includes a curved fourth channel section and a straight fifth channel section, and the fourth channel section and the fifth channel section are smoothly connected.

In some embodiments, optionally, the opening of the first end of the second through hole communicates with the fifth channel section at the end of the fifth channel section.

In some embodiments, optionally, the outlet channel is U-shaped, one arm of the U-shape is the fifth channel section, and one side of the other arm of the U-shape has an opening, and the opening The second passage port is formed.

In some embodiments, optionally, a third groove is provided on the outer surface of the first container part, and a fourth groove is provided on the outer surface of the second container part. The bottom surface of the fourth groove is smooth and parallel to the joint surface of the first container part and the second container part; the first container part is on the bottom surface of the third groove and the first container part. The portion between the bottom surface of a groove forms the first window of the container cavity, and the second container portion forms a portion between the bottom surface of the fourth groove and the bottom surface of the second groove. The second window of the container cavity.

In some embodiments, optionally, the first container part and the second container part are injection molded.

In some embodiments, optionally, the first through hole is in the shape of a funnel, the first opening of the first through hole is in communication with the inlet channel, and the second opening of the first through hole is provided in the On the surface of the first container part, the width of the first through hole gradually increases from the first opening to the second opening.

In some embodiments, optionally, the container further includes a calibration mark provided on the bottom surface of the second container portion of the container cavity.

In the container for analyzing liquid of the present application, dust storage spaces are provided on both sides of the welding bead, thereby preventing welding dust generated during welding from entering the analysis liquid cavity, and ensuring the cleanliness of the analysis cavity; There is a gap between the parting surface of the container part and the second container part after welding, so that after the first container part and the second container part are welded, the joint surfaces of the first container part and the second container part are effectively attached to ensure the analysis of the liquid cavity. Closeness, so that no penetration occurs within a limited period of time during the entire analysis process, ensuring the accuracy of the analysis liquid volume.

Description of the drawings

Figure 1 is a schematic cross-sectional view of a container for analyzing liquids of the present application;

2 is a schematic diagram of the inner surface of the first container part of the container for analyzing liquid shown in FIG. 1;

Fig. 3 is a schematic diagram of the outer surface of the first container part shown in Fig. 2;

4 is a schematic diagram of the inner surface of the second container part of the container for analyzing liquid shown in FIG. 1;

Fig. 5 is a schematic diagram of the outer surface of the second container part shown in Fig. 4;

Figure 6 is a schematic diagram of the structure of the container cavity, the inlet channel and the outlet channel;

Figure 7 is a schematic diagram of the calibration mark;

Fig. 8 is a schematic diagram of the first window and the second window.

Detailed ways

Hereinafter, the preferred embodiments of the present application are introduced with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. This application can be embodied in many different forms of embodiments, and the scope of protection of this application is not limited to the embodiments mentioned in the text.

In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present application does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

As shown in FIG. 1, in a preferred embodiment of the present application, a container for analyzing liquid is provided, which is formed by joining a first container part 100 and a second container part 200 to each other. In this embodiment, in order to cooperate with the use of the automatic urine formed element analyzer, it is a rectangular parallelepiped with a square surface, which has substantially the same length and width as well as a small thickness, for example, the length is 19mm, the width is 19mm, and the thickness is 2.81 mm. It should be noted that in other embodiments, the container for analyzing liquid may also have other shapes, such as a cylindrical shape.

The first container part 100 and the second container part 200 are transparent to the analysis light. In this embodiment, they are injection-molded and transparent to the analysis light (the analysis light is visible light), and the two are joined by ultrasonic welding to form a whole . 1 and 6, the first container part 100 includes a first groove 110, and the second container part 200 includes a second groove 210. When the first container part 100 and the second container part 200 are joined, the first container part 100 and the second container part 200 are joined together. The groove 110 and the second groove 210 form a container cavity 300, an inlet channel 330 and an outlet channel 340 that communicate with each other. The container cavity 300 is used to contain the liquid to be analyzed, the inlet channel 300 is used to inject the liquid to be analyzed into the containing cavity 300, and the outlet channel 340 is used to discharge bubbles and excess liquid. In order to ensure the accuracy of the analysis, it is necessary to keep the containing cavity 300, the inlet channel 330, and the outlet channel 340 clean. When welding the first container part 100 and the second container part 200, welding dust may be generated during the welding process. If the welding dust is not processed, the welding dust will be dispersed into the receiving cavity 300, the inlet channel 330 and the outlet channel 340. Therefore, in this embodiment, a dust storage space for storing or discharging welding dust is provided. As shown in FIG. 1, the weld between the first container part 100 and the second container part 200 has a weld bead 350, and a first dust storage space 351 and a second dust storage space 352 are respectively provided on both sides of the weld bead 350. During welding, the welding dust generated is stopped at the first dust storage space 351 inward and stopped at the second dust storage space 352 outwards. Preferably, the second dust storage space 352 can also be connected to the outside, so that the welding dust is discharged from the second dust storage space 352 to the outside.

As shown in Figure 1, the first container part 100 further includes a first through hole 121, a second through hole 122, a third groove 140 and a first flange 150. In this embodiment, the first container part 100 also has a square shape. Preferably, the thickness of the rectangular parallelepiped is half that of the container. Figure 2 shows the topography of the inner surface of the first container part 100. The inner surface is the surface of the first container part 100 for joining the second container part 200. It can be seen that the first container part 100 is on the inner surface. There are openings of a first groove 110, a first through hole 121, and a second through hole 122, the first through hole 121 opens outside the first groove 110, and the second through hole 122 opens inside the first groove 110 . The first groove 110 is recessed from the inner surface of the first container part 100 along the normal of the inner surface to the other surface (outer surface). Preferably, the inner wall of the first groove 110 is parallel to the inner surface. The line, whose bottom surface is smooth, is parallel to the inner surface. The first flange 150 is an annular body surrounding the inner surface of the first container part 100 and protrudes from the inner surface of the first container part 100.

FIG. 3 shows the topography of the outer surface of the first container part 100, which serves as the upper surface of the container. It can be seen that the first container part 100 has openings of the third groove 140, the first through hole 121 and the second through hole 122 on the outer surface, and the openings of the first through hole 121 and the second through hole 122 are all in the third recess. Outside the slot 140. The third groove 140 is recessed from the outer surface of the first container part 100 along the normal line of the outer surface to the other surface (inner surface). Preferably, the inner wall is parallel to the normal line of the outer surface, and the bottom surface is smooth and parallel. On the outer surface (at the same time parallel to the inner surface of the first container part 100).

As shown in Figures 1, 4 and 5, the second container part 200 further includes an annular groove 250 and a second flange 252. In this embodiment, the second container part 200 is also a rectangular parallelepiped with a square face. Preferably, Its thickness is half of the entire container. Figure 4 shows the topography of the inner surface of the second container part 200. The inner surface is the surface of the second container part 200 for joining the first container part 100. It can be seen that the second container part 200 is on the inner surface. There is a second groove 210. The second groove 210 is recessed from the inner surface of the second container part 200 to the other surface (outer surface) along the normal line of the inner surface. Preferably, the inner wall of the second groove 210 is parallel to the normal line of the inner surface, Its bottom surface is smooth and parallel to the inner surface. The annular groove 250 is a groove surrounding the inner surface of the second container part 200 and is recessed from the inner surface of the second container part 200 toward its outer surface. The annular groove 250 is matched with the first flange 150.

FIG. 5 shows the shape of the outer surface of the second container part 200 as the lower surface of the container. It can be seen that the second container part 200 has a fourth groove 240 on the outer surface. The fourth groove 240 is recessed from the outer surface of the second container part 200 along the normal line of the outer surface to the other surface (inner surface). Preferably, the inner wall is parallel to the normal line of the outer surface, and the bottom surface is smooth and parallel. On the outer surface (while parallel to the inner surface mentioned above).

As shown in FIG. 1, when the first container part 100 and the second container part 200 are joined to form the container for analyzing liquid of the present application, the first flange 150 of the first container part 100 is fitted into the second container part. In the annular groove 250 of the container part 200, the bottom surface 251 of the annular groove 250 is used as a welding part for welding, so that the top surface of the first flange 150 facing the bottom surface 251 and the bottom surface 251 are welded together to form a weld bead 350. The inner surface of the first container part 100 and the inner surface of the second container part 200 are bonded together to form the joint surface 1 of the first container part 100 and the second container part 200, where the joint surface 1 refers to the first groove 110 and The area between the first flange 150; the space between the first groove 110 and the second groove 210 forms the container housing cavity 300, the inlet channel 330 and the outlet channel 340, which are connected.

On the inner side of the welding bead 350 facing the containing cavity 300, at least part of the surface of the first flange 150 is not in contact with the annular groove 250, thereby forming a first gap, which serves as the first dust storage space 351 . On the outside of the weld bead 350 facing the outside, at least part of the surface of the first flange 150 is not in contact with the annular groove 250. Preferably, all the surfaces of the first flange 150 located outside the weld bead 350 are not in contact with the annular groove. The groove 250 contacts to form a second gap, and the second gap serves as the second dust storage space 352. On the first container part 100, an extension part 152 is also provided between the first flange 150 and the outer side surface 151 of the first container part 100. As shown in FIG. 2, the extension part 152 forms the outer part of the first container part 100. edge. As shown in FIG. 1, on the second container part 200, a second flange 252 is formed between the side surface of the annular groove 250 facing the outside and the outer side surface 253 of the second container part 200, and the second flange 252 faces the first flange 252. The top surface of a container part 100 is engaged with the extension 152 of the first container part 100. Preferably, a third gap 353 is left at the junction of the second flange 252 and the extension 152. The provision of the third gap 353 can prevent the joint surface 1 from not being completely closed due to insufficient machining accuracy after the first container part 100 and the second container part 200 are welded and joined. For example, if the machining accuracy is not enough, it may happen that the first container part 100 and the second container part 200 are completely attached to the welding part or the extension part 152 and the second flange 252, but there is still a gap at the joint surface 1. , Thereby causing leakage of the containing cavity 300. By providing the third gap 353, it can be ensured that the joint surfaces 1 are effectively attached to each other, so as to ensure the tightness of the container cavity 300 formed by the joining of the first container part 100 and the second container part 200, so that the entire analysis process Within a limited period of time, the containing cavity 300 will not penetrate, ensuring the accuracy of the analysis liquid volume. Preferably, the third gap 353 can also be connected to the second dust storage space 352, so that the welding dust in the second dust storage space 352 is discharged to the outside.

FIG. 6 shows the container cavity 300, the inlet channel 330 and the outlet channel 340 of this embodiment. It can be seen that, in this embodiment, the cross-section of the container cavity 300 parallel to the joint surface 1 is rectangular and has four corners: a first corner 355, a second corner 356, a third corner 357, and a fourth corner.角部358. Wherein, the first corner 355 and the second corner 356 are rounded corners. Preferably, the radius of curvature of the arc-shaped side wall 359 of the first corner 355 is not less than 2 mm, and the arc-shaped side wall 360 of the second corner 356 The radius of curvature is not less than 2mm. A part (the upper half) of the container cavity 300 is distributed on the first container part 100, and the other part (the lower half) is distributed on the second container part 200. The top surface of the container cavity 300 is the first groove 110. Part of the bottom surface, the bottom surface of the container cavity 300 is a part of the bottom surface of the second groove 210, and the four side walls of the container cavity 300 are connected by a part of the side wall of the first groove 110 and a part of the side wall of the second groove 210 Formed, preferably, the four side walls of the container cavity 300 are respectively parallel to the four side walls of the container.

The inlet channels 330 are distributed on the second container part 200, the top surface of which is part of the inner surface of the first container part 100, the bottom surface of which is part of the bottom surface of the second groove 210, and the side walls of which are partly formed by the second groove 210. The wall is formed in contact with the inner surface of the first container part 100. The inlet channel 330 includes a first channel section 301, a second channel section 302, and a third channel section 303 connected in sequence. The first channel section 301 is connected to the first through hole 121 at one end thereof, and one end of the third channel section 303 The opening of is used as the first channel port 310 from the inlet channel 330 to the container cavity 300. The first passage section 301 is a passage that gradually expands. Specifically, the width of the first passage section 301 gradually increases as it extends from the first through hole 121 to the second passage section 302. The second channel section 302 is a straight channel of equal width, the two ends of which are respectively connected to the first channel section 301 and the third channel section 303 smoothly. The third channel section 303 is a curved channel, the side wall part of which is far from the center 306 of the container cavity 300 is arc-shaped, and the arc-shaped side wall part 361 is in contact with one of the side walls of the container cavity 300. Preferably, the radius of curvature of the arc-shaped side wall portion is not less than 2 mm. In this specification, the center 306 of the container cavity 300 refers to the geometric center of the container cavity 300; or the center of gravity of the liquid filled in the container cavity 300 when the container cavity 300 is filled with liquid.

A part (the upper half) of the outlet channel 340 is distributed on the first container part 100, and the other part (the lower half) is distributed on the second container part 200, the top surface of which is part of the bottom surface of the first groove 110, and the bottom surface of the It is a part of the bottom surface of the second groove 210, and its side wall is formed by a part of the side wall of the first groove 110 and a part of the side wall of the second groove 210. In this embodiment, the outlet channel 340 is U-shaped and includes a fourth channel section 304 and a straight fifth channel section 305. The fourth channel section 304 is a curved channel with an opening on one side wall as the second channel port 320 from the container cavity 300 to the outlet channel 340. The fourth channel section 304 is away from the container cavity 300 The side wall part in the center is curved. The fifth channel section 305 is a straight channel of equal width, one end of which is smoothly connected to the fourth channel section 304, and is connected to the second through hole 122 at the end of the other end.

In this embodiment, as shown in FIG. 2, the first through hole 121 and the second through hole 122 are both adjacent to a side wall of the first flange 150, the first through hole 121 is adjacent to the middle of the side wall, and the second through hole 122 abuts one end of the side wall. Here, “adjacent” means adjacent and close. Preferably, the distance between the first through hole 121 and the second through hole 122 to the side wall is not more than 5 mm, and the first through hole 121 is to the midpoint of the side wall. The distance from the second through hole 122 to one end of the side wall is not greater than 1 mm, and the distance from the second through hole 122 to one end of the side wall is not greater than 5 mm.

In this embodiment, as shown in FIG. 6, the first channel opening 310 and the second channel opening 320 are respectively distributed on both sides of the connecting line 307 between the first through hole 121 and the center 306 of the container cavity 300, specifically, the first A channel opening 310 and a second channel opening 320 are respectively adjacent to (or located at) two corners of the container cavity 300 close to the first through hole 121, that is, the third corner 357 and the fourth corner 358. As shown in Figure 1, the first through hole 121 is in the shape of a funnel. It communicates with the inlet channel 330 through the second opening 124 at the smaller end. The second through hole 121 has a cylindrical shape, an opening at one end is on the outer surface of the first container part 100, and an opening at the other end is on the bottom surface of the first groove 110, which passes through the bottom surface of the first groove 110. The opening is in communication with the outlet channel 340. In this embodiment, the distance between the first through hole 121 and the second through hole 122 is not less than half of the distance between the first channel opening 310 and the second channel opening 320, and the two through holes are in the first container part 100. The distance between the edges of the openings on the outer surface is not less than 2 mm.

Preferably, as shown in FIG. 8, the entire container cavity 300 can be seen through the bottom surface of the third groove 140, and the entire container cavity 300 can be seen through the bottom surface of the fourth groove 240. In this embodiment, the part between the bottom surface of the third groove 140 and the bottom surface of the first groove 110 forms the first window 170 of the container cavity 300, the bottom surface of the fourth groove 240 and the bottom surface of the second groove 210 The part in between forms the second window 270 of the container cavity 300. When the container for analyzing liquid of the present application is used, both the first window 170 and the second window 270 have analysis light passing through, wherein the analysis light passes through the first window 170 and irradiates the object on the bottom surface of the container cavity 300. And partially pass through the second window 270 to image on an analysis lens such as a microscope. Therefore, in order to obtain a good optical analysis effect, the first window 170 is preferably thinner.

The container for analyzing liquids of the present application may also be provided with a calibration mark 260 to provide a standard for adjusting the focal length of an analysis lens such as a microscope when used for optical analysis. As shown in FIG. 7, the calibration mark 260 is provided on the bottom surface of the container cavity 300, and preferably, it is adjacent to the second channel opening 320. The calibration mark 260 can be any pattern that is convenient for observation by an analysis lens such as a microscope, and in this embodiment, it is a set of parallel lines.

When filling the container for analyzing liquid with the liquid to be analyzed in the present application, lay the container flat with the first container part 100 on the top and the second container part 200 on the bottom; the pipette sucks an appropriate amount of the liquid to be analyzed, from the first channel The first opening 123 at the larger end of the hole 121 injects the liquid; the liquid enters the inlet channel 330 from the first through hole 121, which sequentially passes through the first channel section 301, the second channel section 302, and the third channel section 303; the liquid Through the first channel opening 310, it expands into the container cavity 300 in a fan shape; after filling the container cavity 300, the liquid enters the outlet channel 340 through the second channel opening 320, which sequentially passes through the fourth channel section 304 and the fifth channel The section 305 reaches the second through hole 122, thereby expelling the air originally present in the inlet channel 330, the container cavity 300 and the outlet channel 340 of the container, so that it leaves the container through the second through hole 122. As a result, optical analysis of the liquid to be analyzed can be carried out, and centrifugal operation can also be performed if necessary.

The preferred embodiments of the present application are described in detail above. It should be understood that ordinary technologies in this field can make many modifications and changes according to the concept of this application without creative work. Therefore, all technical solutions that can be obtained by a technician in the technical field through logical analysis, reasoning or limited experiments based on the concept of the application and the prior art should fall within the scope of protection determined by the claims.

Claims (20)

A container for analyzing liquids, including: The first container part and the second container part are joined to each other, the first container part has a first groove, a first through hole and a second through hole, and the first through hole is located between the first groove In addition, the second container part has a second groove; the opening of the first groove faces the second container part, the opening of the second groove faces the first container part, and the The space between a groove and the second groove forms a communicating container cavity, an inlet channel and an outlet channel; the first through hole communicates with the inlet channel, and the second through hole communicates with the The exit channel is connected; The first channel opening from the inlet channel to the container cavity and the second channel opening from the container cavity to the outlet channel are respectively distributed in the connection between the first through hole and the center of the container cavity Both sides of the line The inlet passage includes a first passage section that gradually expands; Wherein, the first container part and the second container part are joined by welding and there is a weld bead between the first container part and the second container part, and a first container part is provided on both sides of the weld bead. A dust storage space and a second dust storage space. The container for analyzing liquids according to claim 1, wherein the first container part includes a first flange, and the first flange is a ring-shaped body protruding from the inner surface of the first container part The second container part includes an annular groove matched with the first flange, and the weld bead is arranged at the junction of the first flange and the annular groove. The container for analyzing liquids according to claim 2, wherein at least part of the surface of the first flange located between the weld bead and the container cavity is between the surface of the annular groove A first gap is provided therebetween, and the first gap forms the first dust storage space. The container for analyzing liquids according to claim 2, wherein at least a part of the surface of the first flange located between the weld bead and the outer surface of the first container part is in contact with the annular recess A second gap is provided between the grooves, and the second gap forms the second dust storage space. The container for analyzing liquids according to claim 4, wherein an extension is provided between the first flange and the outer side surface of the first container part, and the annular groove is away from the A second flange is formed between the side surface of the container cavity and the outer side surface of the second container part, and a third gap is formed between the extension part and the second flange. The container for analyzing liquid according to claim 5, wherein the third gap and the second dust storage space are in communication. The container for analyzing liquid according to claim 1, wherein the first through hole and the second through hole are both adjacent to one side wall of the first flange; the first through hole is adjacent to In the middle of the side wall, the second through hole is adjacent to one end of the side wall. The container for analyzing liquids according to claim 1, wherein the container cavity includes four corners; the first channel opening and the second channel opening are respectively adjacent to the container cavity close to The two corners of the first through hole. The container for analyzing liquid according to claim 8, wherein the two corners of the container cavity away from the first through hole are rounded corners, and the container cavity is located in the rounded corner. The side wall portions at the corners are curved. 9. The container for analyzing liquids according to claim 9, wherein the radius of curvature of the arc-shaped side wall portion of the container cavity is not less than 2 mm. The container for analyzing liquid according to claim 1, wherein the inlet channel includes a curved third channel section, and one end of the third channel section is opened to form the first channel opening; the third channel The part of the side wall of the segment away from the center of the container cavity is arc-shaped. The container for analyzing liquid according to claim 11, wherein the radius of curvature of the arc-shaped side wall portion of the third channel section is not less than 2 mm. The container for analyzing liquid according to claim 11, wherein the inlet channel further comprises a second channel section located between the third channel section and the first channel section, and the first channel section Extending from the first through hole to the second channel section and gradually expanding, the second channel section is a straight channel of equal width. The container for analyzing liquids according to claim 1, wherein the outlet channel includes a curved fourth channel section and a straight fifth channel section, between the fourth channel section and the fifth channel section Connect smoothly. The container for analyzing liquid according to claim 14, wherein the opening of the first end of the second through hole communicates with the fifth channel section at the end of the fifth channel section. The container for analyzing liquids according to claim 14, wherein the outlet channel is U-shaped, one arm of the U-shape is the fifth channel section, and one side of the other arm of the U-shape There is an opening that forms the second passage port. The container for analyzing liquids according to claim 1, wherein the outer surface of the first container part has a third groove, the outer surface of the second container part has a fourth groove, and The bottom surfaces of the third groove and the fourth groove are smooth and parallel to the joint surface of the first container part and the second container part; the first container part is in the third groove The portion between the bottom surface of the first groove and the bottom surface of the first groove forms the first window of the container cavity, and the second container portion is on the bottom surface of the fourth groove and the bottom surface of the second groove The part in between forms the second window of the container cavity. The container for analyzing liquids according to claim 1, wherein the first container part and the second container part are injection-molded. The container for analyzing liquids according to claim 1, wherein the first through hole is in the shape of a funnel, the first opening of the first through hole is in communication with the inlet channel, and the first through hole is The second opening is provided on the surface of the first container part, and the width of the first through hole gradually increases from the first opening to the second opening. The container for analyzing liquids according to claim 1, wherein the container further comprises a calibration mark, the calibration mark being provided on the bottom surface of the second container part of the container cavity.

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