CN215263567U

CN215263567U - Sampling needle prick bias protection device

Info

Publication number: CN215263567U
Application number: CN202120800767.8U
Authority: CN
Inventors: 董保献; 李四华; 李勇; 肖靖泽; 薛辰全
Original assignee: Beijing Jitian Instrument Co ltd
Current assignee: Beijing Jitian Instrument Co ltd; Beijing Titan Instruments Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-21
Anticipated expiration: 2031-04-19

Abstract

The utility model aims to determine whether the needle pricks partially by self when the sample injection needle pricks the test tube and meets accident, and adjust the action gesture in time. The utility model discloses a syringe needle protection device that leans on, including syringe needle, gleitbretter, spring, position switch, advance kind arm and be used for controlling the control module who advances kind arm motion, it is equipped with first chamber to advance kind arm front end, it passes first chamber and advances kind arm connection to advance the syringe needle, the gleitbretter is fixed it is located on the position of first intracavity to advance the syringe needle, the spring suit is on advancing the syringe needle, and the one end and the gleitbretter of spring are connected, and the other end is connected with first chamber upper end, position switch establishes the height that is used for responding to the gleitbretter in first intracavity, position switch still connects through cable and control module. The utility model has the advantages that: when the sampling needle is pricked and deflected, the control module controls the lifting of the sampling arm, so that the sampling equipment can be effectively protected from being damaged.

Description

Sampling needle prick bias protection device

Technical Field

The utility model relates to an autosampler field, in particular to sampling needle protection device.

Background

Analytical instruments on the market generally adopt an automatic sample injector for sample injection. The automatic sample injector comprises a sample plate, a sample injection arm, a motor and the like, wherein the sample injection arm is connected with a sample injection needle. The sampling needle can be metal material, quartzy material, usually stretches into the sample test tube with the sampling needle and carries out the sample and absorb during the use.

When the sample injector uses the sample injection arm and the sample tray for a long time, the position of the sample injection arm and the position of the sample tray have accumulated errors, the test tube is placed and inclined by human factors, the sample tray is placed and inclined, or the sample injection arm is staggered due to other factors in operation, the sample injection needle cannot be correctly inserted into the test tube. Once the sample injection needle is pricked on the sample tray or the test tube arm, the sample injection needle is deformed if the sample injection needle is light, and the sample injector is damaged if the sample injection needle is heavy, so that the experiment cannot be normally continued.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a whether protection device is pricked to advance kind needle has solved when the appearance needle pricks into the test tube and meets accident, can judge by oneself whether the needle pricks partially to in time adjust the action gesture, protect the appearance needle and not destroyed, further avoid the sample injector to be destroyed.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a kind needle prick protection device partially, including advancing needle, gleitbretter, spring, position switch, advance kind arm and be used for controlling the control module who advances kind arm motion, advance kind arm front end and be equipped with first chamber, advance the needle and pass first chamber and be connected with advancing kind arm, the gleitbretter is fixed advance the needle and be located on the position of first intracavity, the spring suit is on advancing the needle, and the one end and the gleitbretter of spring are connected, and the other end is connected with first chamber upper end, position switch establishes the height that is used for responding to the gleitbretter in first intracavity, position switch still connects through cable and control module.

Preferably, the distance between the slide plate and the position switch in the vertical direction is equal to the compression stroke of the spring when the sample injection needle is at the limit bending angle.

Preferably, the sample injection arm comprises a cross arm and a vertical arm, the front end of the cross arm is connected with the sample injection needle, and the rear end of the cross arm is connected with the vertical arm.

Preferably, the sample injection needle is in a single-needle mode, a double-needle mode or a four-needle mode.

Preferably, the gleitbretter is L shape, the gleitbretter includes fixed connection's first riser and first horizontal piece, first riser suit is in on the injection needle, first riser overcoat is equipped with the spring.

Preferably, the control module comprises a control panel and a workstation.

Compared with the prior art, the utility model has the advantages that: 1, when a sample injection needle is pricked and deviated, a control module controls a sample injection arm to lift, so that sample injection equipment can be effectively protected from being damaged; and 2, the sampling needle can timely inform experimenters when being punctured to be deviated, so that faults are eliminated, and the influence on the experiment is reduced to the minimum.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a sample injection needle and a needle mode of the present invention;

FIG. 3 is a schematic diagram of a four-needle mode of the sample injection needle of the present invention;

1-test tube, 2-sample injection needle, 3-head cavity, 4-spring, 5-sliding sheet, 6-position switch, 7-cross arm, 8-cable, 9-vertical arm and 10-control module

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, the device for protecting needle stick deflection comprises a needle 2, a slide 5, a spring 4, a position switch 6, a sample arm, and a control module 10 for controlling the movement of the sample arm. The control module comprises a control panel and a workstation, wherein the control panel is used for controlling the operation of the sample injection arm, monitoring whether the sample injection needle is inclined or not, and controlling the reverse return stroke of the sample injection arm and synchronously sending alarm information to the workstation. The workstation is used for receiving the data that the control panel transmitted, and the analysis is shown for experiment operating personnel, also is used for showing the alarm information of appearance needle.

Advance kind arm front end and be equipped with first chamber 3, advance the syringe needle and pass first chamber and be connected with advance kind arm, the gleitbretter is fixed advance the syringe needle and be located the position of first intracavity, the spring suit is on advancing the syringe needle, and the one end and the gleitbretter of spring are connected, and the other end is connected with first chamber upper end, position switch establishes the height that is used for responding to the gleitbretter in first intracavity, the gleitbretter with position switch is equal to the compression stroke of syringe needle spring when limit bending angle at ascending interval in vertical side, and position switch still connects through cable 8 and control module. When the injection needle advances a kind in test tube 1, being sheltered from by accident and driving the slide upward movement, the injection needle bending spring is compressed, and the slide shifts up and is responded to by position switch, advances the reverse return stroke of appearance arm through control panel control.

The sample injection arm comprises a cross arm 7 and a vertical arm 9, the front end of the cross arm is connected with a sample injection needle, and the rear end of the cross arm is connected with the vertical arm. The gleitbretter is L shape, the gleitbretter includes fixed connection's first riser and first horizontal piece, first riser suit is in on the syringe, first riser overcoat is equipped with the spring. The sample injection needle is in a single-needle mode, a double-needle mode or a four-needle mode. When the position switch and other structures break down, the automatic control sample injection arm cannot rebound, and the first vertical sheet can prop against the upper cover of the head cavity to protect the sample injection needle.

The utility model discloses during the use, control module advances the appearance through advancing a kind arm control sampling needle, because reasons such as positional deviation are sheltered from when advancing a kind needle and advance the appearance, advances a kind needle and drives the slide upward movement, advances a kind needle bending spring and is compressed, and the slide shifts up by the position switch response, and the reverse return stroke of trigger control panel control sampling arm prevents to advance a kind needle and damages.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. A sample injection needle prick deviation protection device is characterized by comprising a sample injection needle, a slip sheet, a spring, a position switch, a sample injection arm and a control module for controlling the motion of the sample injection arm, wherein a head cavity is arranged at the front end of the sample injection arm, the sample injection needle penetrates through the head cavity to be connected with the sample injection arm, the slip sheet is fixed on the position of the sample injection needle in the head cavity, the spring is sleeved on the sample injection needle, one end of the spring is connected with the slip sheet, the other end of the spring is connected with the upper end of the head cavity, the position switch is arranged in the head cavity to be used for sensing the height of the slip sheet, and the position switch is further connected with the control module through the cable.

2. The needle stick deflection protection device of claim 1, wherein the vertical distance between the slide and the position switch is equal to the compression stroke of the spring at the limit bending angle of the needle.

3. The needle stick deflection protection device of claim 1, wherein the sample arm comprises a cross arm and a vertical arm, the cross arm is connected with the sample needle at a front end and connected with the vertical arm at a rear end.

4. The needle stick deflection protection device of claim 1, wherein the needle is in single needle or double needle or four needle mode.

5. The needle stick deflection protection device of claim 1, wherein the sliding piece is L-shaped, the sliding piece comprises a first vertical piece and a first transverse piece which are fixedly connected, the first vertical piece is sleeved on the needle, and a spring is sleeved outside the first vertical piece.

6. The needle stick deflection protection device of claim 1, wherein the control module comprises a control panel and a workstation.