CN219302092U

CN219302092U - High-mixing-efficiency sampler

Info

Publication number: CN219302092U
Application number: CN202320540053.7U
Authority: CN
Inventors: 郝书顺; 眭彦军; 陈立柱; 郝栋
Original assignee: Shijiazhuang Hipro Biotechnology Co Ltd
Current assignee: Shijiazhuang Hipro Biotechnology Co Ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-07-04
Anticipated expiration: 2033-03-20

Abstract

The utility model discloses a sampler with high mixing efficiency, which comprises a reaction cup, a fixed rod, a sleeve and a piston, wherein the head of the fixed rod is inserted into the reaction cup, the sleeve is arranged on the outer side of the rear part of the fixed rod, the piston is sleeved in the sleeve, the sampling head of the fixed rod is eccentrically arranged, and the sampling head is close to the inner wall of the reaction cup. When the sampler is swung, the diluent in the reaction cup can flow along the inner wall of the reaction cup, so that samples in the sampling head close to the inner wall of the reaction cup are more easily flushed out, and the mixing efficiency of the samples and the diluent is improved.

Description

High-mixing-efficiency sampler

Technical Field

The utility model relates to the technical field of biological, chemical and medical inspection instruments, in particular to a sampler with high mixing efficiency.

Background

The sampler is an inspection tool integrating sampling, reagent filling and mixing. After a liquid sample is sucked by a sampling head (usually a capillary tube), the sampling head is inserted into a reaction cup, and then the reaction cup is shaken and oscillated to dissolve the sample into a diluent in the reaction cup, and then a piston of the sampler is pressed down, and a reagent in the piston flows into the reaction cup, so that the test is performed.

At present, the sampling head of the sampler is positioned at the center of the reaction cup, and when the sampler is shaken and swung, the diluent in the reaction cup flows along the inner wall of the reaction cup, and the diluent positioned at the center of the reaction cup flows transversely, so that the sample in the sampling head is difficult to be flushed out by the diluent, and the sample sucked in the sampling head is difficult to be flushed out by the diluent. Thus, it is often necessary to shake the sampler up and down or mound the sampler on a table, but this is not effective, resulting in low efficiency of mixing the sample and diluent.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a sampler with high mixing efficiency, which is used for solving the problem of low efficiency of the existing sampler when a sample and a diluent are mixed.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a high sample thief of mixing efficiency, includes reaction cup, head insert the dead lever in the reaction cup, set up sleeve and the piston of cover in the sleeve in the dead lever rear portion outside, the sampling head of dead lever head is eccentric setting, the sampling head is close to the inner wall of reaction cup.

Further, the sampling head is a capillary tube.

Further, the distance between the center of the sampling head and the inner wall corresponding to the reaction cup is 0.5-10 mm.

Further, the distance between the center of the sampling head and the inner wall corresponding to the reaction cup is 1-5 mm.

Further, annular protrusions used for being in sealing fit with the reaction cup are arranged on the outer wall of the fixing rod at intervals, and annular grooves are formed between two adjacent protrusions.

Further, the protrusions are provided with notches for communicating the two adjacent ring grooves, and the two adjacent notches are staggered.

Further, the angle difference between two adjacent openings on the horizontal plane is 30-180 degrees.

Further, the width of the notch is 0.5 to 3mm.

Further, the cross section of the reaction cup is rectangular or circular, and the protrusions are corresponding rectangular annular or circular annular.

Further, a locking nut for connecting the sleeve and the piston is also included.

The utility model has the positive effects that:

1. the utility model is provided with the reaction cup, the fixed rod, the sleeve and the piston, the sampling head at the head of the fixed rod is arranged eccentrically, and when the sampler is swung, the diluent in the reaction cup flows along the inner wall of the reaction cup, so that the sample in the sampling head close to the inner wall of the reaction cup is more easily flushed out, and the mixing efficiency of the sample and the diluent is improved.

2. The fixing rod is matched with the reaction cup in a sealing way through the bulge, the bulge is provided with a notch, and the angle difference between two adjacent notches on the horizontal plane is 180 degrees, so that the pressure inside and outside the reaction cup is ensured to be consistent, and foam generated by the diluent can be eliminated.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a side view of the present utility model;

FIG. 4 is a cross-sectional view of the portion A-A of FIG. 3;

FIG. 5 is a schematic illustration of the flow of reagents in a cuvette during the shaking of the present utility model;

in the figure:

1. a piston; 2. locking a nut; 3. a sleeve; 4. a ring groove; 5. a fixed rod; 6. a sampling head; 7. a reaction cup; 8. a protrusion;

9. and (5) a notch.

Detailed Description

Example 1

As shown in fig. 1 to 4, a sampler with high mixing efficiency comprises a reaction cup 7, a fixing rod 5, a sleeve 3 and a piston 1, wherein the reaction cup 7, the fixing rod 5 and the sleeve 3 are sequentially arranged from bottom to top, the head of the fixing rod is downwards inserted into the reaction cup 7, the sleeve 3 is arranged outside the rear part of the fixing rod 5, the piston 1 is sleeved in the sleeve 3, a lock nut 2 is sleeved at the upper end of the sleeve 3 and is used for connecting the piston 1 and the sleeve 3, the position of the piston 1 is limited, and the piston 1 is prevented from being pulled out of the sleeve 3. The sampling head 6 at the head of the fixed rod 5 is arranged eccentrically, and the sampling head 6 is close to the inner wall of the reaction cup 7. The fixing rod 5 and the sleeve 3 are integrally injection molded.

Annular protrusions 8 used for being in sealing fit with the reaction cup 7 are arranged on the outer wall of the fixed rod 5 at intervals, and annular grooves 4 are formed between two adjacent protrusions 8.

The sampling head 6 is a vertical capillary tube clamped at the head part of the fixed rod 5, and the distance between the center of the sampling head 6 and the inner wall of the reaction cup 7 is 3mm. The cross section of the reaction cup 7 is rectangular, and the bulge 8 is in a corresponding rectangular ring shape.

Referring to fig. 5, the use process of the present utility model is as follows:

1. sampling is performed by using the sampling head 6, and then the sampled fixing rod 5 is inserted into the reaction cup 7.

2. The sampler is forcibly swung in the direction of the arrow outside the cuvette 7 shown in fig. 5, and the diluent in the cuvette 7 flows in the direction of the arrow at the bottom of the cuvette 7. Since the sampling head 6 is close to the inner wall of the reaction cup 7, the diluent flowing from bottom to top easily washes out the sample in the sampling head 6.

3. The piston 1 is pressed down forcefully, and the puncture thimble at the tail part of the positioning rod 1 punctures the sealing membrane of the reagent bin in the piston 1, and the reagent in the reagent bin flows into the reaction cup.

Example 2

This embodiment differs from embodiment 1 in that:

the bulge 8 is provided with a notch 9 for communicating two adjacent ring grooves 4, and the two adjacent notches 9 are staggered. The angle difference between two adjacent notches 9 on the horizontal plane is 180 degrees. The width of the notch 9 is 2mm.

After the fixing rod 1 is inserted into the reaction cup 7, foam generated by the diluent in the reaction cup 7 overflows outwards, is blocked by the bulge 8, enters the annular groove 4 along the notch 9 on the bulge 8, and then enters the other annular groove 4 through the other notch 9 until the foam is eliminated. The 180-degree angle difference between two adjacent openings 9 can increase the flow path of the foam, so that the foam is easier to eliminate, and the foam is prevented from being sprayed out of the reaction cup 7.

The cross section size of the notch 9 can ensure the consistency of the internal pressure and the external pressure of the reaction cup 7 and prevent the foam from overflowing.

The foregoing description of the embodiments of the present utility model has been presented only to illustrate the technical spirit and features of the present utility model, and it is intended to enable those skilled in the art to understand the present utility model and to implement it, but not to limit the scope of the present utility model only by the present embodiments, i.e. equivalent changes or modifications to the spirit of the present utility model disclosed herein, and it is intended for those skilled in the art to make local improvements in the system and changes, variations between subsystems, etc. within the scope of the present utility model without departing from the structure of the present utility model. At present, the technical scheme of the application has been subjected to pilot-scale experiments, namely small-scale experiments of products before large-scale mass production; after the pilot test is completed, the use investigation of the user is performed in a small range, and the investigation result shows that the user satisfaction is higher; now, the industrialization of the formal production of the product is prepared, including the early warning investigation of intellectual property risks.

Claims

1. The utility model provides a high sample thief of mixing efficiency, includes reaction cup (7), head insert dead lever (5) in reaction cup (7), set up sleeve (3) and cover piston (1) in sleeve (3) in dead lever (5) rear portion outside, its characterized in that: the sampling head (6) at the head of the fixed rod (5) is arranged eccentrically, and the sampling head (6) is close to the inner wall of the reaction cup (7).

2. The high mixing efficiency sampler of claim 1, wherein: the sampling head (6) is a capillary tube.

3. A high mixing efficiency sampler according to claim 2 and characterized in that: the inner wall spacing between the center of the sampling head (6) and the corresponding inner wall of the reaction cup (7) is 0.5-10 mm.

4. A high mixing efficiency sampler according to claim 3 and characterized in that: the inner wall spacing between the center of the sampling head (6) and the corresponding reaction cup (7) is 1-5 mm.

5. The high mixing efficiency sampler of claim 1, wherein: annular protrusions (8) used for being in sealing fit with the reaction cup (7) are arranged on the outer wall of the fixing rod (5) at intervals, and annular grooves (4) are formed between two adjacent protrusions (8).

6. The high mixing efficiency sampler of claim 5 and further comprising: the bulge (8) is provided with a notch (9) for communicating two adjacent ring grooves (4), and the two adjacent notches (9) are staggered.

7. The high mixing efficiency sampler of claim 6 and further comprising: the angle difference between two adjacent openings (9) on the horizontal plane is 30-180 degrees.

8. The high mixing efficiency sampler of claim 6 and further comprising: the width of the notch (9) is 0.5 to 3mm.

9. The high mixing efficiency sampler of claim 5 and further comprising: the cross section of the reaction cup (7) is rectangular or circular, and the bulge (8) is corresponding rectangular ring-shaped or circular ring-shaped.

10. A high mixing efficiency sampler according to any one of claims 1 to 9 and wherein: the device also comprises a lock nut (2) for connecting the sleeve (3) and the piston (1).