A quantitative dilution sampling tube

Abstract

The present invention provides a quantitative dilution sampling tube, comprising: a sampling tube, which is a hollow tube; a base, a through hole is provided on the bottom plate of the base, the sampling tube cooperates with the through hole, and the sampling tube is fixedly connected to the bottom plate of the base, and a first matching part is provided on the base; a container, the container comprises a soft shell, a second matching part and a film, the soft shell is provided with a accommodating cavity, the accommodating cavity is used to accommodate a diluent, the second matching part is fixedly connected to the open end of the soft shell, and the second matching part cooperates with the first matching part, and the film covers the open end of the soft shell; wherein, when the first matching part is not matched with the second matching part, the accommodating cavity is in a negative pressure state; when the first matching part is fully matched with the second matching part, the sampling tube passes through the film and is connected to the accommodating cavity. The present invention is cleverly designed to improve the efficiency of quantitative sampling, dilution and dripping processes.

Description

Technical Field

[0001] The invention relates to the field of sampling tubes, and more particularly to a quantitative dilution sampling tube. Background Art

[0002] The existing liquid quantitative sampling generally uses a pipette, an electronic balance or a capillary tube for sampling, a pipette or an electronic balance for quantitative dilution, and a dropper bottle for quantitative addition. Since these three steps are performed separately, there is a problem that the operation process is relatively cumbersome. Summary of the invention

[0003] The purpose of the invention is to provide a quantitative dilution sampling tube.

[0004] The present invention aims to solve the problem that the existing processes of quantitative liquid sampling, quantitative dilution and quantitative dripping are relatively complicated.

[0005] Compared with the prior art, the technical solution of the present invention and its beneficial effects are as follows:

[0006] A quantitative dilution sampling tube comprises: a sampling tube, which is a hollow tube; a base, a bottom plate of the base is provided with a through hole, the sampling tube cooperates with the through hole, and the sampling tube is fixedly connected to the bottom plate of the base, and a first matching portion is provided on the base; a container, the container comprises a soft shell, a second matching portion and a film, the soft shell is provided with a accommodating cavity, the accommodating cavity is used to accommodate a diluent, the second matching portion is fixedly connected to the open end of the soft shell, and the second matching portion cooperates with the first matching portion, and the film covers the open end of the soft shell; wherein, when the first matching portion and the second matching portion are not matched, the accommodating cavity is in a negative pressure state; when the first matching portion and the second matching portion are fully matched, the sampling tube passes through the film and is connected to the accommodating cavity.

[0007] As a further improvement, the sampling tube is a capillary tube.

[0008] As a further improvement, the first matching portion is an internal thread segment, the second matching portion is an external thread segment, and the internal thread segment is adapted to the external thread segment.

[0009] As a further improvement, the outer side surface of the base is further provided with a contact portion, and the contact portion is used to contact with a hand.

[0010] As a further improvement, the outer side surface of the base is further provided with recessed portions, and the recessed portions are tangentially spaced apart on the contact portion.

[0011] As a further improvement, the sampling tube is provided with a sharp portion at one end close to the container.

[0012] As a further improvement, a scale bar is provided on the sampling tube.

[0013] As a further improvement, the film is made of aluminum foil.

[0014] The beneficial effects of the present invention are as follows: the combination of a sampling tube, a base and a container is adopted to realize the integrated integration of sampling, dilution and dripping; the sampling tube adopts a capillary tube to extract the sample liquid by capillary action; the film seal covers the open end of the soft shell, and the accommodating cavity is in a negative pressure state; through the mutual cooperation between the first matching part and the second matching part, one end of the sampling tube and the film are driven to approach each other, and finally the film is pierced through the film by the sharp part of the sampling tube, so that the sampling tube is connected to the accommodating cavity, and the negative pressure in the accommodating cavity brings the sample liquid in the sampling tube into the accommodating cavity to be mixed with the diluent into a mixed liquid, and the quantitative dripping of the mixed liquid is realized by gently squeezing the soft shell; the structural design of the present invention is ingenious, which not only improves the efficiency of quantitative sampling, dilution and quantitative dripping processes, but also reduces the use cost, is easy to distinguish types, and provides great convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of a quantitative dilution sampling tube provided in Example 1 of the present invention.

[0016] Figure 2 This is a structural exploded view of a quantitative dilution sampling tube provided in Example 1 of the present invention.

[0017] Figure 3 It is a structural cross-sectional view of a quantitative dilution sampling tube provided by an embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the container provided in the first embodiment of the present invention.

[0019] Figure 5 It is a three-dimensional structural diagram of a quantitative dilution sampling tube provided in Example 2 of the present invention.

[0020] In the figure: 1. Sampling tube 11. Sharp part 2. Base

[0021] 21.Through hole 22.First matching portion 23.Contact portion

[0022] 24. Depression 3. Container 31. Soft shell

[0023] 311. Accommodating cavity 32. Second matching portion 33. Film DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Embodiment 1

[0027] Reference Figures 1 to 4As shown, a quantitative dilution sampling tube 1 comprises: a sampling tube 1, which is a hollow tube; a base 2, a through hole 21 is provided on the bottom plate of the base 2, the sampling tube 1 cooperates with the through hole 21, and the sampling tube 1 is fixedly connected to the bottom plate of the base 2, and a first matching portion 22 is provided on the base 2; a container 3, the container 3 comprises a soft shell 31, a second matching portion 32 and a film 33, the soft shell 31 is provided with a accommodating cavity 311, the accommodating cavity 311 is used to accommodate a diluent, the second matching portion 32 is fixedly connected to the open end of the soft shell 31, and the second matching portion 32 cooperates with the first matching portion 22, and the film 33 covers the open end of the soft shell 31; wherein, when the first matching portion 22 and the second matching portion 32 are not matched, the accommodating cavity 311 is in a negative pressure state; when the first matching portion 22 and the second matching portion 32 are fully matched, the sampling tube 1 passes through the film 33 and is connected to the accommodating cavity 311. The present invention adopts a combination of a sampling tube 1, a base 2 and a container 3 to achieve integrated sampling, dilution and dripping; the sampling tube 1 adopts a capillary tube to extract the sample liquid by capillary action; the film 33 is sealed and covers the open end of the soft shell 31, and the accommodating chamber 311 is in a negative pressure state; through the mutual cooperation between the first matching portion 22 and the second matching portion 32, one end of the sampling tube 1 and the film 33 are driven to approach each other, and finally the film 33 is pierced through by the sharp portion 11 of the sampling tube 1, so that the sampling tube 1 is connected to the accommodating chamber 311, and the negative pressure in the accommodating chamber 311 brings the sample liquid in the sampling tube 1 into the accommodating chamber 311 to mix with the diluent into a mixed liquid, and the quantitative dripping of the mixed liquid is achieved by gently squeezing the soft shell 31; the present invention has an ingenious structural design, which not only improves the efficiency of the quantitative sampling, dilution and quantitative dripping processes, but also reduces the use cost, is easy to distinguish types, and provides great convenience for users.

[0028] The sampling tube 1 is a capillary tube, and the sampling tube 1 samples the sample through capillary action.

[0029] Reference Figures 2 to 3 As shown, the first matching portion 22 is an internal thread segment, and the second matching portion 32 is an external thread segment, and the internal thread segment is adapted to the external thread segment. By rotating the base 2 and the container 3, the position of the port of the sampling tube 1 and the film 33 are brought closer to / away from each other, and the arrangement of the internal thread segment and the external thread segment improves the air tightness between the container 3 and the base 2, so that the amount of the mixed liquid added can be accurately controlled by lightly squeezing the soft shell 31.

[0030] Reference Figure 1 to Figure 2 As shown, a contact portion 23 is also provided on the outer side of the base 2, and the contact portion 23 is used to contact with the hand.

[0031] Reference Figure 1 to Figure 2As shown, the outer side surface of the base 2 is also provided with a recessed portion 24, and the recessed portion 24 is arranged on the contact portion 23 along a tangential interval. The combination of the recessed portion 24 and the contact portion 23 improves the contact effect between the hand and the base 2, making it easier to grasp the base 2 or to rotate the first matching portion 22 and the second matching portion 32 relative to each other.

[0032] Reference Figure 2 As shown, the sampling tube 1 is provided with a sharp portion 11 at one end close to the container 3, and the sharp portion 11 is chamfered, so that the sampling tube 1 can easily pass through the film 33 through the sharp portion 11, thereby improving the use effect of the product and avoiding the resistance of the sampling tube 1 caused by the unpunctured film 33, thereby affecting the actual use of the product.

[0033] The sampling tube 1 is provided with a scale bar, which facilitates the sampling tube 1 to accurately control the sample amount when sampling, and prepares for quantitative sampling in the subsequent step of mixing the sample with the diluent.

[0034] As a further improvement, the film 33 is made of aluminum foil.

[0035] The working principle of a quantitative dilution sampling tube 1 provided by the present invention is:

[0036] A fixed amount of diluent is contained in the accommodating cavity 311 of the soft shell 31, and the film 33 is sealed and covers the open end of the soft shell 31, and the accommodating cavity 311 is in a negative pressure state; first, the end of the sampling tube 1 away from the base 2 is in contact with the sample to be taken, and the sampling tube 1 extracts the sample by capillary action, and the amount of sample extraction is controlled by the scale line so that the sample amount and the amount of diluent form a certain ratio; after the sample extraction is completed, one hand contacts the contact portion 23 and the recessed portion 24, and the other hand contacts the container 3, and the base 2 and the container 3 are rotated relative to each other to realize the first matching portion 22 and the second matching portion 22. The engaging parts 32 are engaged with each other, and the sharp part 11 of the sampling tube 1 and the film 33 are continuously approached, and finally the sharp part 11 pierces the film 33, so that the sampling tube 1 is connected to the accommodating chamber 311. Since the accommodating chamber 311 is in a negative pressure state, after the sampling tube 1 is connected to the accommodating chamber 311, the sample in the sampling tube 1 is sucked into the accommodating chamber 311 to be mixed with the diluent. After the first matching part 22 and the second matching part 32 are fully matched, the sample and the diluent are shaken into a mixed liquid, and then the soft shell 31 is gently squeezed to achieve quantitative dripping of the mixed liquid from the end of the sampling tube 1 away from the container 3.

[0037] Embodiment 2

[0038] The difference between this embodiment and the first embodiment is that the structure of the base 2 is different. Figure 5 As shown, the base 2 does not include a recessed portion 24 .

[0039] The working principle and working process of this embodiment can refer to the corresponding contents of the above-mentioned embodiments.

[0040] The above embodiments are only used to explain the technical solutions of the present invention rather than to limit them. Those skilled in the art should understand that any modification and equivalent substitution that does not depart from the spirit and scope of the present invention should fall within the protection scope of the claims of the present invention.

Claims

1. A quantitative dilution sampling tube, characterized in that: include: A sampling tube, wherein the sampling tube is a hollow tube; A base, wherein a through hole is provided on the bottom plate of the base, the sampling tube cooperates with the through hole, and the sampling tube is fixedly connected to the bottom plate of the base, and a first matching portion is provided on the base; A container, the container comprising: a soft shell, the soft shell being provided with a containing cavity, the containing cavity being used to contain a diluent; a second matching portion, the second matching portion being fixedly connected to an open end of the soft shell, and the second matching portion matching with the first matching portion; and a film, the film covering the open end of the soft shell; When the first matching portion and the second matching portion are not matched, the accommodating chamber is in a negative pressure state; when the first matching portion and the second matching portion are completely matched, the sampling tube passes through the film and is connected to the accommodating chamber.

2. A quantitative dilution sampling tube according to claim 1, characterized in that: The sampling tube is a capillary tube.

3. A quantitative dilution sampling tube according to claim 1, characterized in that: The first matching portion is an internal thread segment, and the second matching portion is an external thread segment, and the internal thread segment is adapted to the external thread segment.

4. A quantitative dilution sampling tube according to claim 1, characterized in that: The outer side surface of the base is also provided with a contact portion, and the contact portion is used for contacting with a hand.

5. A quantitative dilution sampling tube according to claim 4, characterized in that: The outer side surface of the base is also provided with recessed parts, and the recessed parts are arranged on the contact part at intervals along the tangential direction.

6. A quantitative dilution sampling tube according to claim 1, characterized in that: The sampling tube is provided with a sharp portion at one end close to the container.

7. A quantitative dilution sampling tube according to claim 1, characterized in that: The sampling tube is provided with a scale bar.

8. The quantitative dilution sampling tube according to claim 1, characterized in that: The material of the film is aluminum foil.

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