CN218994861U

CN218994861U - Multilayer sample sampling device

Info

Publication number: CN218994861U
Application number: CN202223200096.5U
Authority: CN
Inventors: 周虹旭; 李柳英; 周子涵; 黄梅; 郭心怡; 杨柳
Original assignee: HUALAN BIOLOGICAL ENGINEERING (CHONGQING) Inc
Current assignee: HUALAN BIOLOGICAL ENGINEERING (CHONGQING) Inc
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-09
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to the technical field of sampling devices, in particular to a multilayer sample sampling device which comprises a piston assembly and a plurality of sampling bottles, wherein each sampling bottle is provided with a sampling tube which is directly communicated with the bottom of a cavity of the sampling bottle, adjacent sampling bottles are vertically arranged and connected through a connecting rod, an inner cavity is arranged in the connecting rod, threads are arranged outside the connecting rod, the top of each sampling bottle is provided with a thread bush, and the connecting rod is in threaded connection with the thread bush; the piston assembly comprises a piston rod and a piston, a piston is arranged in the cavity of each sampling bottle, the piston rod penetrates through the inner cavity of the connecting rod to extend to the cavity of each sampling bottle and is fixedly connected with the piston in the cavity, and the connecting part of the piston rod and the sampling bottle is in dynamic sealing connection. The utility model can solve the problems that the existing sampler can not sample simultaneously and can not adjust the sampling height at will.

Description

Multilayer sample sampling device

Technical Field

The utility model relates to the technical field of sampling devices, in particular to a multilayer sample sampling device.

Background

The sampler is a commonly used experimental instrument, is applied to various fields, and generally relates to sampling and detecting various mixed solutions in the biochemical field at present so as to research the uniformity, state, property, trend of time change and the like of the mixture at different time nodes; in order to ensure the accuracy of the detection result after sampling, it is generally required to sample substances at different positions in the experimental tank at the same time, for example, to sample solutions of the upper layer, the middle layer and the lower layer of the experimental tank at the same time for multiple times in different time periods, so as to detect the uniformity or stability of stirring of the mixed solution in the experimental tank at a certain time point. The sampling method adopted by the current department is as follows: the sampling method has the advantages that different sampling tubes are adopted to stretch into different height areas for sampling, and the following technical problems exist in the use process: 1. when the solution of the upper layer, the middle layer and the lower layer of the experimental tank is sampled in the same period, the sampling tubes are required to be sequentially stretched into different heights for independent sampling, so that the simultaneous sampling cannot be realized, and the efficiency is low; 2. the height can not be adjusted at will according to the needs, and when the experiment tank with different specifications is sampled, the sampling tube needs to be replaced.

Disclosure of Invention

The utility model provides a multilayer sample sampling device, which can solve the problems that the existing sampler cannot sample simultaneously and cannot adjust the sampling height at will.

The application provides the following technical scheme:

the multi-layer sample sampling device comprises a piston assembly and a plurality of sampling bottles, wherein each sampling bottle is provided with a sampling tube which is directly communicated with the bottom of a cavity of the sampling bottle, adjacent sampling bottles are vertically arranged and connected through a connecting rod, an inner cavity is arranged in the connecting rod, threads are arranged outside the connecting rod, the top of each sampling bottle is provided with a thread bush, and the connecting rod is in threaded connection with the thread bush; the piston assembly comprises a piston rod and a piston, a piston is arranged in the cavity of each sampling bottle, the piston rod penetrates through the inner cavity of the connecting rod to extend to the cavity of each sampling bottle and is fixedly connected with the piston in the cavity, and the connecting part of the piston rod and the sampling bottle is in dynamic sealing connection.

Technical principle and beneficial effect: the solution at different positions in the experimental tank can be sampled by arranging a plurality of sampling bottles, and the solution at different positions can be sampled simultaneously by only pulling the piston rod by arranging a piston in each sampling bottle and using the same piston rod for control; through set up the screw thread on the connecting rod, set up the thread bush at the top of sampling bottle, only need rotatory sampling bottle just can adjust the distance between the adjacent sampling bottle to make it be applicable to the experimental tank of equidimension not, application scope is wider.

Further, the cavity height of the sampling bottle is larger than the height of the thread bush. The advantages of this arrangement are: when the position of the sampling bottle is adjusted through rotating the threaded sleeve, a certain movable space of the piston in the cavity of the sampling bottle is always ensured, and normal sampling is realized.

Further, the connecting rod is provided with a scale groove along the length direction, and scale lines are arranged in the scale groove; the position of the sampling bottle is conveniently adjusted by the prompt of the scale marks.

Further, a handle is arranged at the top of the piston rod; the piston rod is conveniently pushed and pulled by the handle.

Drawings

Fig. 1 is a front cross-sectional view of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

the labels in the drawings of this specification include: 1, 2, 3 connecting rods, 4 inner cavities, 5 threaded sleeves, 6 piston rods, 7 pistons, 8 handles and 100 cavities.

Example 1

As shown in fig. 1, the multi-layer sample sampling device comprises a piston assembly and a plurality of sampling bottles 1, wherein three sampling bottles 1 are specifically used in the embodiment, the sampling bottles 1 are of slender cylindrical structures and are respectively used for taking samples of the upper part, the middle part and the lower part of an experimental tank, and the positions of the three sampling bottles 1 can be adjusted according to the experimental tanks with different specifications, so that the practicability is stronger.

Specifically, each sampling bottle 1 is provided with a sampling port directly communicated with the bottom of the cavity 100, and a sampling tube 2 can be arranged at the sampling port or not, and the former is preferred in the embodiment; the adjacent sampling bottles 1 are vertically arranged and connected through the connecting rod 3, specifically, an inner cavity 4 is arranged in the connecting rod 3, a sealing ring is arranged at the joint of the inner cavity 4 of the connecting rod 3 and a cavity 100 of the sampling bottle 1 to prevent liquid in the adjacent sampling bottle 1 from being communicated, threads are arranged outside the connecting rod 3, a thread sleeve 5 is further fixed at the top of each sampling bottle 1, the connecting rod 3 is in threaded connection with the thread sleeve 5, and the height of the cavity 100 of the sampling bottle 1 is larger than that of the thread sleeve 5; the connecting rod 3 is provided with a scale groove along its length direction, and scale marks (not shown in the figure) are provided in the scale groove. The piston assembly comprises a piston rod 6 and a piston 7, a piston 7 is arranged in the cavity 100 of each sampling bottle 1, the piston rod 6 penetrates through the inner cavity 4 of the connecting rod 3 to extend to the cavity 100 of each sampling bottle 1 and is fixedly connected with the piston 7 in the cavity, and the connecting part of the piston rod 6 and the sampling bottle 1 is in dynamic sealing connection; the top of the piston rod 6 is provided with a handle 8.

During sampling operation, the sampling device is directly vertically inserted into the experimental tank, then the piston rod 6 is pulled upwards, and the appropriate liquid is extracted by utilizing the negative pressure effect and enters the sampling bottle 1, so that samples at different positions can be extracted at the same time.

When the height is required to be adjusted, the distance between the sampling bottles 1 is adjusted according to the specification of the experimental tank, and the scale marks on the connecting rod 3 can be referred to during adjustment, so that each sampling bottle 1 can take samples of the required part in the experimental tank (not limited to taking the positions of the upper part, the middle part and the lower part of the experimental tank); specifically, only the threaded sleeve 5 needs to be rotated to be positioned at different positions of the connecting rod 3, so that the height of the sampling bottle 1 can be adjusted, the sampling bottle is suitable for experimental tanks of different types, and sampling devices with different heights do not need to be selected according to the size of the tank body in each sampling.

The above is merely an embodiment of the present utility model, and the present utility model is not limited to the field of the present embodiment, but the specific structure and characteristics of the present utility model are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The multi-layer sample sampling device is characterized by comprising a piston assembly and a plurality of sampling bottles, wherein each sampling bottle is provided with a sampling tube which is directly communicated with the bottom of a cavity of the sampling bottle, adjacent sampling bottles are vertically arranged and connected through a connecting rod, an inner cavity is arranged in the connecting rod, threads are arranged outside the connecting rod, the top of each sampling bottle is provided with a thread sleeve, and the connecting rod is in threaded connection with the thread sleeve; the piston assembly comprises a piston rod and a piston, a piston is arranged in the cavity of each sampling bottle, the piston rod penetrates through the inner cavity of the connecting rod to extend to the cavity of each sampling bottle and is fixedly connected with the piston in the cavity, and the connecting part of the piston rod and the sampling bottle is in dynamic sealing connection.

2. The multi-layer sample sampling device of claim 1, wherein: the cavity height of the sampling bottle is larger than the height of the thread sleeve.

3. The multi-layer sample sampling device of claim 2, wherein: the connecting rod is provided with a scale groove along the length direction of the connecting rod, and scale marks are arranged in the scale groove.

4. A multi-layer sample-taking device according to claim 3, wherein: the top of the piston rod is provided with a handle.