Auxiliary device suitable for filtering of needle type filter

An auxiliary device and needle-type technology, which is applied in the fields of filtration and separation, measuring device, preparation of test samples, etc., can solve the problems of laborious filtration process, complicated steps, waste of extraction liquid, etc., so as to improve work efficiency and reduce frequent insertion. The effect of pulling and reducing workload

Pending Publication Date: 2021-10-15
ZHENGZHOU TOBACCO RES INST OF CNTC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Including TOC instrument, liquid chromatograph, continuous flow analyzer and other instruments, the extract must be filtered before sample injection, otherwise the instrument will be blocked and the instrument will be damaged
[0003] Traditional filter paper filtration has poor filtration effect, complicated steps and serious waste of extract
Filtration with a needle filter, although the filtering effect is good, but time-consuming and laborious, each person can filter up to 40 extracts per hour, and the filtering process is very laborious

Method used

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  • Auxiliary device suitable for filtering of needle type filter
  • Auxiliary device suitable for filtering of needle type filter
  • Auxiliary device suitable for filtering of needle type filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, an auxiliary device suitable for needle filter filtration includes a needle piston 12, a two-position three-way valve 4, a filter 11 and a sampling bottle 3 distributed vertically in sequence, and the outlet of the needle piston 12 The liquid port is connected to the first interface of the two-position three-way valve 4, the outlet of the two-position three-way valve 4 is connected to the inlet of the filter 11, and the second interface 4-1 of the two-position three-way valve is a liquid suction port. During work, it is necessary to communicate with the external source of experimental liquid, and the outlet of the filter 11 is set corresponding to the inlet of the sampling bottle 3 .

[0033] When in use, it can be operated manually. The pressure change during the suction and discharge process of the needle piston 12 forces the two-position three-way valve 4 to switch between the two channels. During the suction process, the two-position three...

Embodiment 2

[0037] In order to realize batch operations, a base plate 2, a bracket 8, a lifting plate 5 and a pin piston mounting plate 10 are also designed, and the pin type piston mounting plate 10 is fixed on the middle part of the bracket 8, and the base plate 2 is fixed on the bottom of the bracket 8. Bottom, the lifting plate 5 is located above the needle piston mounting plate 10, the bottom plate 2 is provided with a station for placing the sampling bottle 3, and the needle piston 12 is installed on the needle piston mounting plate 10 And facing the station, the piston rod 12-1 of the needle piston 12 is fixed on the lifting plate 5, the lifting plate 5 is driven up and down by the driving mechanism, and the two-position three-way valve 4 is connected And be fixed on the output end of needle piston 12.

[0038]The drive mechanism includes a drive motor 7, a lead screw 9 and a top plate 6, the support 8 is a vertical guide post, and the drive motor 7 is fixed on the top plate 6. In ...

Embodiment 3

[0046] Such as figure 2 As shown, the main difference between this embodiment and embodiment 2 is:

[0047] The lifting plate 5, the bottom plate 2 and the needle piston mounting plate 10 are all in-line strips, and the needle piston 12, sampling bottle 3, filter 11 and two-position three-way valve 4 are all distributed along a straight line.

[0048] The form of linear arrangement is suitable for the working environment where the operating table is long. When operating each sampling bottle, the degree of mutual interference is small and the operating space is large.

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PUM

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Abstract

The invention provides an auxiliary device suitable for filtering of needle type filter. The auxiliary device comprises a needle type piston, a two-position three-way valve, a filter and a sampling bottle which are sequentially distributed in the vertical direction; a liquid outlet of the needle type piston is communicated with a first connector of the two-position three-way valve, an outlet of the two-position three-way valve is communicated with an inlet of the filter, a second interface of the two-position three-way valve is a liquid extraction opening, and an outlet of the filter corresponds to an inlet of the sampling bottle. According to the auxiliary device suitable for filtering of the needle type filter, the two-position three-way valve is additionally arranged, switching of filtering and liquid pumping actions is achieved in the pumping process, the needle type piston does not need to be frequently disassembled, the working efficiency can be greatly improved, multi-station operation can be conducted according to a set form, and the efficiency is further improved.

Description

technical field [0001] The invention relates to the needle filter field, in particular to an auxiliary device suitable for needle filter filtration. Background technique [0002] Extraction filtration is a necessary step in many experimental processes. In order to prevent the sample from clogging the instrument during the measurement process, causing unnecessary economic loss and time waste, the sample extraction solution needs to be filtered before measurement. Instruments including TOC instrument, liquid chromatograph, continuous flow analyzer, etc. must filter the extract before sample injection, otherwise the instrument will be blocked and the instrument will be damaged. [0003] Traditional filter paper filtration has poor filtration effect, complicated steps and serious waste of extract. Filtration with a needle filter, although the filtering effect is better, is time-consuming and laborious, and each person can filter up to 40 extracts per hour, and the filtering pro...

Claims

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Application Information

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IPC IPC(8): B01D35/00G01N1/34G01N1/40
CPCB01D35/00G01N1/34G01N1/4077G01N2001/4088
Inventor 张艳玲张盟慎龙舞翟振梁太波吕晓亮王建伟常乃杰林玉红张俊张佳佳郭亚迪
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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