CN216808112U

CN216808112U - Combined liquid sample injection funnel

Info

Publication number: CN216808112U
Application number: CN202123407758.1U
Authority: CN
Inventors: 宣梦达; 贾威阵; 郑洋
Original assignee: Zhejiang Chxin Petroleum Technology Co ltd
Current assignee: Zhejiang Chxin Petroleum Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-24
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a combined liquid sample-injection funnel, which comprises a sample-injection funnel, a bearing platform, a valve device and a sample-injection pipe, wherein the sample-injection funnel is provided with a funnel opening and a drainage pipe which are connected, the inner wall of the drainage pipe is provided with threads for being matched with the threads of a reagent bottle opening, the bearing platform is of a hollow structure, the inner wall of the upper part of the hollow structure is matched with the outer wall of the drainage pipe, the valve device is arranged at the middle section of the hollow structure, the outer wall of the lower end of the hollow structure is connected with the inner wall of the sample-injection pipe through the threads, the sample-injection pipe is provided with a piston with a sealing ring for being connected with a container, and the lower end of the sample-injection pipe is provided with a sample-injection pipeline. The device can effectively avoid danger possibly caused by the pouring of dangerous liquid, can be matched with various containers, and can improve the safety and convenience of experiments.

Description

Combined liquid sample injection funnel

Technical Field

The utility model relates to a liquid sample introduction device, in particular to a combined detachable liquid sample introduction funnel which is corrosion-resistant, acid-base resistant and capable of avoiding contact of people and dangerous liquid.

Background

The funnel is one of the most commonly used instruments in the laboratory, and is usually used for liquid and solid powder injection or filtration with filter paper and the like.

When the conventional funnel is used for liquid sampling, a glass rod is generally used for drainage, and the funnel cannot be suitable for a plurality of reaction devices due to the fixed length. For strong corrosivity, such as strong acid and strong alkali, or a reagent with high danger, the potential safety hazard is large, protective equipment with complete wearing is needed, certain requirements on an experimental place are also required, and inconvenience is caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a combined liquid sample funnel which can be used for a strong corrosive solvent or other reagents with higher dangerousness and can effectively improve the safety of an experiment.

The technical scheme adopted by the utility model is as follows:

a combined liquid sample-feeding funnel comprises a sample-feeding funnel, a bearing platform, a valve device and a sample-feeding pipe, which are usually made of polytetrafluoroethylene. Sampling funnel has funnel opening and the drainage tube that links to each other, wherein funnel opening angle is preferred 120, can prevent that the reagent from overflowing as the buffering from the junction, be equipped with the screw thread at the drainage tube inner wall and be used for with reagent bottleneck screw-thread fit, the bearing platform is hollow structure, and this hollow structure upper portion inner wall is identical with the drainage tube outer wall, and valving installs in this hollow structure middle section, and this hollow structure lower extreme outer wall passes through the screw thread and links to each other with advancing appearance pipe inner wall, the bearing platform is used for bearing sampling funnel and suits with sampling funnel drainage tube length to wrap up the drainage tube, it is used for linking to each other with the container to advance to be equipped with the piston that has the sealing washer on the appearance pipe, and the lower extreme is for advancing the appearance pipeline.

Furthermore, the inner wall of the upper part of the hollow structure and the outer wall of the drainage tube can be connected in a thread fit manner.

Furthermore, various specifications of sample injection funnels can be arranged according to specifications of different reagent bottles, and drainage tubes of the sample injection funnels have different inner diameters.

The sampling tube can be provided with a plurality of types according to the requirements of the specification of the reactor and the length of the sampling pipeline.

The funnel device, the valve device and the sampling pipe are all connected through threads, and the lengths of the funnel device, the valve device and the sampling pipe are matched.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model can effectively avoid the danger possibly caused by the dangerous liquid in the process of pouring, can be matched with various containers, and can effectively improve the safety and convenience of the experiment.

Drawings

FIG. 1 is a schematic diagram of a specific structure of the apparatus of the present invention.

In the figure: 1 is a sample feeding funnel, 2, 3, 5, 7 and 8 are threads, 4 is a bearing platform, 6 is a rotary valve, 9 is a sealing ring and 10 is a sample feeding pipeline.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and preferred embodiments:

as shown in fig. 1, a combined liquid sample injection funnel includes a sample injection funnel 1, a supporting platform 4, a rotary valve 6 and a sample injection pipeline 10, which are all made of teflon. Wherein the opening angle of the sample funnel 1 is 120 degrees, the reagent can be prevented from overflowing from the thread 2 to be used as buffering, the thread 2 matched with the conventional reagent bottle mouth is arranged in the sample funnel, and the thread 3 is also arranged at the lower end of the sample funnel and can be connected with the supporting platform 4. The upper end of the bearing platform 4 bears the sample injection funnel 1 and is screwed with the lower end of the sample injection funnel 1 through the threads 3, the length of the bearing platform is matched with that of the sample injection funnel 1, and the lower end of the bearing platform is directly connected with the rotary valve 6. The lower end of the rotary valve 6 is connected with a sample inlet pipeline 10 through a thread 7. The upper end of the sample introduction pipeline 10 is provided with a thread 8 which is connected with a rotary valve 7 and supports the rotary valve 6 and a supporting platform 4, and the middle section is connected with a container through a piston with a sealing ring 9.

When the reagent bottle is used, a reagent needing sample injection is firstly opened and placed on a table top, the matched sample injection funnel 1 is screwed on the reagent bottle through the thread 2, then the bearing platform 4 and the rotary valve 6 are screwed on the upper end of the sample injection funnel 1 through the

threads

3 and 5, and the rotary valve 6 is closed. The matched sample introduction pipeline 10 is inserted into the reactor, then the reagent bottle, the sample introduction funnel 1, the supporting platform 4 and the rotary valve 6 are connected to the sample introduction pipeline 10 through threads 7 and 8, and if the device needs to be fixed, the reagent bottle can be fixed through an iron clamp. The sample can be injected by opening the rotary valve 6. After the sample introduction is finished, the rotary valve 6 is closed, the standing is carried out for 5min to ensure that liquid in the pipeline is emptied as much as possible, then the screw threads 7 and 8 are unscrewed, the reagent bottle, the sample introduction funnel 1, the bearing platform 4 and the rotary valve 6 are taken down and placed on a table top, the standing is carried out for 5min to empty residual liquid in the pipeline, then the

screw threads

3 and 5 are unscrewed to remove the bearing platform 4 and the rotary valve 6 from the sample introduction funnel 1, the screw thread 2 is unscrewed to remove the sample introduction funnel 1 from the reagent bottle, and if the sealing plug is required in the reaction, the sample introduction pipeline 10 is taken down from the reactor and replaced with the sealing plug.

Claims

1. The utility model provides a modular liquid sampling funnel, its characterized in that, includes sampling funnel, bearing platform, valving and sampling pipe, and sampling funnel has continuous funnel opening and drainage tube, is equipped with the screw thread at the drainage tube inner wall and is used for with reagent bottleneck screw-thread fit, the bearing platform is hollow structure, and this hollow structure upper portion inner wall is identical with the drainage tube outer wall, and valving installs in this hollow structure middle section, and this hollow structure lower extreme outer wall passes through the screw thread and links to each other with sampling pipe inner wall, be equipped with the piston that has the sealing washer on the sampling pipe and be used for linking to each other with the container, the lower extreme is the introduction pipeline.

2. The modular liquid intake funnel of claim 1, wherein the intake funnel opening angle is 120 °.

3. The combined liquid sampling funnel according to claim 1, wherein the inner wall of the upper part of the hollow structure is connected with the outer wall of the drainage tube in a thread fit manner.

4. The combined liquid sampling funnel of claim 1, wherein the sampling funnel, the supporting platform, the valve device and the sampling tube are all made of polytetrafluoroethylene.

5. The modular liquid sample funnel of claim 1, wherein the sample funnel has a plurality of gauges, and the draft tubes of the sample funnels have different inner diameters.

6. The combined liquid sample funnel according to claim 1, wherein the sample tubes have a plurality of specifications, and the sample tubes have different piston sizes and/or different sample line lengths.