CN212275788U

CN212275788U - A inhale liquid needle belt cleaning device for autosampler

Info

Publication number: CN212275788U
Application number: CN202021162349.2U
Authority: CN
Inventors: 彭发雷; 杨君武; 邹阳; 吴萍; 杨玉敏; 高小惠; 陈维军; 吴敏
Original assignee: Yichang Dingshun Detection Co ltd
Current assignee: Yichang Dingshun Detection Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-01-01
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to a imbibition needle belt cleaning device for autoinjector, including wasing the seat, establish the wash bowl bottom the wash bowl, establish the rotation cover in the wash bowl, rotate the cover bottom and be equipped with a plurality of brush strips that wipe that insert the wash bowl, be equipped with on the wash bowl and drive and rotate cover pivoted push-and-pull mechanism. The utility model discloses can wash adnexed sample of remaining on the pipette, avoid cross contamination.

Description

A inhale liquid needle belt cleaning device for autosampler

Technical Field

The utility model relates to an automatic sample injector equipment technical field, concretely relates to imbibition needle belt cleaning device for automatic sample injector.

Background

Gas chromatograph and gas chromatography mass spectrometer are as detecting common equipment in the laboratory, can combine automatic sampler to carry out the cooperation sample usually, especially need carry out the imbibition when taking a sample to the liquid sample, the liquid feeding, move liquid etc. and operate, in operation process, have partial sample solution and adsorb the interior external surface at automatic sampler's imbibition needle, especially the cylinder inner wall and the syringe needle periphery of imbibition needle, along with advancing the increase of kind number of times, if not in time wash the adsorbate and directly be used for different samples, can cause cross contamination undoubtedly.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a suction needle belt cleaning device for auto-injector can wash the adnexed sample that remains on the suction needle, avoids cross contamination.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pipette needle belt cleaning device for autoinjector, includes the washing seat, and the wash bowl is established to the washing seat bottom, establishes the rotating sleeve in the washing seat, establishes the pipette needle in the rotating sleeve, and the syringe needle of pipette needle inserts in the wash bowl, and the rotating sleeve bottom is equipped with the strip of brushing the syringe needle of pipette needle, is equipped with on the washing seat to drive and rotates cover pivoted push-and-pull mechanism.

Furthermore, the rotating sleeve is rotatably arranged in the cleaning seat through a bearing.

Furthermore, the push-pull mechanism comprises a worm wheel sleeved on the rotating sleeve and a worm meshed with the worm wheel, slideways are arranged in the cleaning seats at the two ends of the worm, slide rods are arranged in the slideways, one end of each slide rod is meshed with the gear at the end part of the worm, and the other end of each slide rod is connected with a push-pull rod outside the cleaning seat.

Furthermore, the bottom of the rotating sleeve is provided with a plurality of through holes, the plurality of wiping strips are annularly arrayed at the bottom of the rotating sleeve around the through holes, and the inner sides of the wiping strips are provided with wiping layers.

Further, the upper end of the cleaning cylinder is in threaded connection with the cleaning seat.

Furthermore, the top of the cleaning seat is provided with a fixing ring for fixing the needle cylinder of the liquid suction needle, and the fixing ring is in threaded connection with the cleaning seat.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses can load up the solvent that corresponds with the sample in the wash bowl, absorb the residual sample of solvent to the needle internal adsorption through the imbibition needle and tentatively dissolve, will mix after dissolving and arrange the liquid and fall, and change the solvent in the wash bowl into the clear water, put into the imbibition needle and rotate in the cover after that, fix the cylinder of imbibition needle on wasing the seat with fixed cover, push rod and push-and-pull mechanism's push-and-pull rod of push-and-pull cylinder simultaneously, make the imbibition needle in absorption and discharge clear water, push-and-pull mechanism drives the brush strip that makes a round trip to rotate on the fixed cover and rubs the syringe needle of imbibition needle, finally realize dissolving through the solvent, the clear water washes, the inside and outside washing of imbibition needle is accomplished to syringe needle rubbing brush, and convenient for operation.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

fig. 2 is a schematic view of the structure of the rotating sleeve of the present invention.

Reference numerals: 1. cleaning a seat; 2. a cleaning cylinder; 3. rotating the sleeve; 4. a liquid suction needle; 5. wiping the brush strip; 6. a bearing; 7. A worm gear; 8. a worm; 9. a slideway; 10. a slide bar; 11. a gear; 12. a push-pull rod; 13. a brushing layer; 14. and (4) fixing the ring.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-2, a pipette needle cleaning device for an autosampler comprises a cleaning seat 1, a cleaning cylinder 2 is arranged at the bottom of the cleaning seat 1, a rotating sleeve 3 is arranged in the cleaning seat 1, wherein the upper end of the cleaning cylinder 2 is in threaded connection with the cleaning seat 1, a bearing 6 is arranged in the cleaning seat 1, the rotating sleeve 3 can rotate in the cleaning seat 1 through the bearing 6, and the rotation is realized by arranging a push-pull mechanism on the cleaning seat 1. The cleaning barrel 2 is used for containing a sample solvent or clear water corresponding to a sample, the rotating sleeve 3 is used for placing the liquid suction needle 4, and a through hole is formed in the bottom of the rotating sleeve 3, so that the needle head of the liquid suction needle 4 can be inserted into the cleaning barrel 2 through the through hole to suck the solvent or the clear water.

In order to clean the needle head of the liquid suction needle 4, the bottom of the rotating sleeve 3 is provided with a plurality of brushing strips 5 for brushing the needle head of the liquid suction needle 4, as shown in fig. 2, the plurality of brushing strips 5 are integrally formed with the rotating sleeve 3 and are annularly arrayed at the bottom of the rotating sleeve 3 around the through hole, a brushing layer 13 is bonded on the inner side of each brushing strip 5, the brushing layer 13 is made of flexible materials such as sponge, and the rotating sleeve 3 can rotate, so that the periphery of the needle head of the liquid suction needle 4 can be brushed when the brushing layer 13 rotates along with the rotating sleeve 3.

Specifically, as shown in fig. 1, the push-pull mechanism includes a worm wheel 7 sleeved on the rotating sleeve 3, and a worm 8 engaged with the worm wheel 7, slide ways 9 are provided in the cleaning seat 1 at both ends of the worm 8, slide rods 10 are provided in the slide ways 9, one end of each slide rod 10 is engaged with a gear 11 at an end of the worm 8, that is, gear teeth engaged with the gear 11 are provided on the slide rods 10, and the other end of each slide rod 10 is connected to a push-pull rod 12 outside the cleaning seat 1, so that when the push-pull rod 12 is pushed and pulled, the slide rods 10 can be driven to slide in the slide ways 9, and further sequentially engaged with the gear 11 through the slide rods 10, and the engagement between the worm wheel 7 and the worm 8 drives the rotating sleeve 3 and the wiping strip 5 to sequentially rotate back and forth, and the.

The utility model discloses an in the concrete use, at first the sample solvent that corresponds with the sample is loaded onto in wash bowl 2, imbibition needle 4 absorbs solvent and carries out the solvent to the attached residual sample in the cylinder, then discharge, this process can be relapse a lot of, then change the solvent in wash bowl 2 into the clear water, it is fixed with 1 bottom of 2 upper end screw in washing seats of wash bowl, then put into rotation cover 3 with imbibition needle 4, push-and-pull imbibition needle 4's push rod and push-and-pull rod 12 among the push-and-pull mechanism simultaneously, make and make a round trip to absorb and discharge the clear water and carry out abluent the time to the cylinder inner wall at imbibition needle 4, brush strip 5 round trip rotates and wipes the brush to the syringe needle outer wall, finally realize the quick effective cleanness of imbibition needle 4. In the cleaning process, in order to push and pull the push rod of the liquid suction needle 4 without moving the needle cylinder along with the push rod, the top of the cleaning seat 1 is provided with a fixing ring 14, and the fixing ring 14 is in threaded connection with the cleaning seat 1 and is used for pressing the top of the needle cylinder on the cleaning seat 1 to fix the needle cylinder.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a pipette needle belt cleaning device for autosampler which characterized in that: the cleaning device comprises a cleaning seat (1), wherein a cleaning barrel (2) is arranged at the bottom of the cleaning seat (1), a rotating sleeve (3) is arranged in the cleaning seat (1), a liquid suction needle (4) is arranged in the rotating sleeve (3), a needle head of the liquid suction needle (4) is inserted into the cleaning barrel (2), a wiping strip (5) for wiping the needle head of the liquid suction needle (4) is arranged at the bottom of the rotating sleeve (3), and a push-pull mechanism for driving the rotating sleeve (3) to rotate is arranged on the cleaning seat (1).

2. The pipette needle cleaning device according to claim 1, wherein: the rotating sleeve (3) is rotatably arranged in the cleaning seat (1) through a bearing (6).

3. The pipette needle cleaning device according to claim 2, wherein: the push-pull mechanism comprises a worm wheel (7) sleeved on the rotating sleeve (3) and a worm (8) meshed with the worm wheel (7), slide ways (9) are arranged in the cleaning seats (1) at two ends of the worm (8), slide rods (10) are arranged in the slide ways (9), one ends of the slide rods (10) are meshed with gears (11) at the end parts of the worm (8), and the other ends of the slide rods (10) are connected with push-pull rods (12) outside the cleaning seats (1).

4. The pipette needle cleaning device according to claim 1, wherein: the bottom of the rotating sleeve (3) is provided with a plurality of through holes, the wiping strips (5) are annularly arrayed at the bottom of the rotating sleeve (3) around the through holes, and the inner sides of the wiping strips (5) are provided with wiping layers (13).

5. The pipette needle cleaning device according to claim 1, wherein: the upper end of the cleaning cylinder (2) is connected with the cleaning seat (1) by screw thread.

6. The pipette needle cleaning device according to claim 1, wherein: the top of the cleaning seat (1) is provided with a fixing ring (14) for fixing the needle cylinder of the liquid suction needle (4), and the fixing ring (14) is in threaded connection with the cleaning seat (1).