CN214348389U - Belt cleaning device of trace sampling needle - Google Patents

Abstract

The utility model discloses a cleaning device for a trace sample injection needle, which comprises a syringe, wherein a sealing cover is in threaded connection with a shell to form a sealed cavity, a liquid inlet used for being matched with a liquid outlet of the syringe is arranged on the sealing cover, a lug used for being conveniently twisted is arranged around the liquid inlet, an upper sealing body is arranged in the sealing cover, a cleaning channel is arranged at the center of the upper sealing body, a lower sealing body is arranged in the shell, an installation through hole used for placing the trace sample injection needle to be cleaned is arranged at the center of the lower sealing body, a groove matched with a boss on the trace sample injection needle is arranged on the upper surface of the lower sealing body, and the liquid inlet, the cleaning channel and a needle hole of the trace sample injection needle to be cleaned form a communication channel, the utility model has the characteristics of can be fast simply wash the trace sampling needle effectively to meet the requirements, simple structure, easy and simple to handle, reduce work load, save operating time, use cost low by a wide margin.

Description

Belt cleaning device of trace sampling needle

Technical Field

The utility model belongs to the technical field of organic compound's detection, analytical instrument cleaning equipment, especially, relate to a belt cleaning device of trace sampling needle.

Background

In the fields of chemical industry, medicine, and the like, organic compounds are generally detected and analyzed by using instruments such as a high performance liquid chromatograph, a high performance gas chromatograph, a trace moisture meter, and the like. Most of these instruments use micro-injection needles for sample injection. In order to prevent cross contamination of different samples, a trace sample injection needle is required to meet the requirements before sample injection, and other sample residues cannot exist. The micro-sampling needle is expensive, high in disposable use cost, generally used repeatedly, difficult to clean, and only 0.5 mm in inner diameter, and other tools are difficult to operate, and usually, cleaning solution is used for sucking and then pumping out the micro-sampling needle for repeated replacement cleaning, and the last sample residue can be cleaned to meet the requirement after being replaced and cleaned for hundreds of times, so that the workload of an operator is high, and the operation time is long.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the not enough of prior art and provide a can be fast simply wash the micro sample injection needle effectively to meeting the requirements, simple structure, easy and simple to handle, reduce work load, save operating time, use cost low micro sample injection needle's belt cleaning device greatly.

The utility model aims at realizing like this, a belt cleaning device of trace sampling needle, including the syringe, its characteristics are closing cap and casing threaded connection formation seal chamber, be equipped with on the closing cap be used for with syringe liquid outlet complex inlet, it is used for conveniently twisting the lug that moves to encircle the inlet, be equipped with the upper seal in the closing cap, the center of upper seal is equipped with the washing passageway, the lower seal sets up in the casing, the center of lower seal is equipped with and is used for placing the installation through-hole of waiting to wash the trace sampling needle, the upper surface of lower seal be equipped with trace sampling needle boss complex recess, the inlet, wash the passageway and wait to wash the pinhole formation intercommunication passageway of trace sampling needle.

Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model adopts the injector as the cleaning agent injection device, the trace sampling needle to be cleaned is arranged in the lower sealing body, the lower sealing body is pressed down through the upper sealing body, the injector is tightly attached without leakage, the cleaning liquid is sucked into the injector and is inserted into the liquid inlet of the sealing cover, the cleaning liquid is injected from the upper part and flows through the liquid inlet, the cleaning channel and the communicating channel formed by the pinhole of the trace sampling needle to be cleaned, thereby realizing the cleaning purpose; after cleaning, pulling out the injector, unscrewing the sealing cover and the shell, and taking out the micro sample injection needle for use; the lug on the sealing cover is convenient to screw; the upper surface of the lower sealing body is provided with a groove matched with the boss on the trace sample injection needle, so that the trace sample injection needle is ensured to be combined with the lower sealing body in a sealing way, and no liquid leakage occurs; the utility model discloses washing liquid unidirectional flow does not have the repeated pollution of replacement in the cleaning process, and the washing liquid is mobile fast, and the cleaning performance is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the device comprises a syringe, 2, a lug, 3, a sealing cover, 4, a liquid inlet, 5, an upper sealing body, 6, a groove, 7, a lower sealing body, 8, a shell, 9 and a trace sample injection needle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

A cleaning device for a trace sample injection needle comprises a syringe 1, the syringe is used for containing cleaning fluid and providing the cleaning fluid for the device, a sealing cover 3 is connected with a shell 8 through threads to form a sealing cavity, a liquid inlet 4 matched with a liquid outlet of the syringe 1 is arranged on the sealing cover 3, a lug 2 convenient to screw is arranged around the liquid inlet 4, an upper sealing body 5 is arranged in the sealing cover 3, a cleaning channel is arranged at the center of the upper sealing body 5, a lower sealing body 7 is arranged in the shell 8, an installation through hole used for placing a trace sample injection needle 9 to be cleaned is arranged at the center of the lower sealing body 7, a groove 6 matched with an boss on the trace sample injection needle 9 is arranged on the upper surface of the lower sealing body 7, the sealing cover 3 and the shell 8 are connected and installed through threads, the upper sealing body 5 and the lower sealing body 7 are sealed in an extruding way, and the liquid inlet 10, the cleaning channel and the needle hole of the micro sample injection needle 9 to be cleaned form a communicating channel.

Claims (1)

1. The utility model provides a belt cleaning device of trace injection needle, which comprises a syringe, characterized by closing cap and casing threaded connection form seal chamber, be equipped with on the closing cap be used for with syringe liquid outlet complex inlet, it is used for conveniently twisting the lug to be equipped with around the inlet, be equipped with the upper seal in the closing cap, the center of upper seal is equipped with the washing passageway, the lower seal sets up in the casing, the center of lower seal is equipped with and is used for placing the installation through-hole of waiting to wash the trace injection needle, the upper surface of lower seal be equipped with the trace injection needle boss complex recess, the inlet, wash the passageway and wait to wash the pinhole formation intercommunication passageway of trace injection needle.

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