CN213986345U

CN213986345U - Chromatograph injector

Info

Publication number: CN213986345U
Application number: CN202022969630.3U
Authority: CN
Inventors: 郭军卫; 闫波
Original assignee: Zhengzhou Hehe Medical Laboratory Co ltd
Current assignee: Zhengzhou Hehe Medical Laboratory Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-17
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a chromatograph sample injector, which comprises a sampler body, wherein a piston block is arranged inside the sampler body, the upper side of the piston block is connected with a push rod, the upper end of the push rod is connected with a pushing handle, the lower end of the sampler body is connected with a connector, a needle head is installed on the lower end of the connector in a threaded manner, an installation sleeve is fixedly installed at the outer end of the sampler body through a fixing mechanism, the outer end of the installation sleeve is provided with a scale bar, the lower end of the installation sleeve is provided with an installation hole, the left side of the installation sleeve is connected with a lifting seat, the lifting seat is installed on a screw rod in a threaded manner, the upper end of the screw rod penetrates through the installation frame and is connected with a rotating handle, the inner wall at the left side of the installation frame is provided with a chute, the left side of the lifting seat is connected with a ball through a connecting rod, and the device improves the accuracy of controlling the insertion depth of a needle tube at the sample injection port, but also the connector and the needle head are convenient to be disassembled.

Description

Chromatograph injector

Technical Field

The utility model belongs to the technical field of the chromatograph accessory, specifically be a chromatograph injector.

Background

The gas chromatograph is a chromatographic analysis device using gas as a mobile phase. The principle is mainly to realize the separation of the mixture by utilizing the differences of the boiling point, the polarity and the adsorption property of the substances. After being gasified in the gasification chamber, the sample to be analyzed is carried into the chromatographic column by inert gas, namely carrier gas, also called mobile phase, the column contains liquid or solid fixed phase, and all components in the sample tend to form distribution or adsorption equilibrium between the mobile phase and the fixed phase. And the gas chromatograph is injected by a sample injector, then is introduced into a capillary chromatographic column in the heat preservation box for component separation, and finally is sent into detection equipment for detection.

But present chromatograph injector is when the appearance of introduction, requires that the position that the needle tubing inserted the chromatograph inlet keeps unanimous, but present injector is difficult to control the degree of depth that the needle tubing inserted of inlet department, leads to the accuracy reduction of detection data, and the syringe needle of present injector needs to be changed after long-time the use simultaneously, but present syringe needle is inconvenient to be changed, greatly reduced the practicality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above-mentioned proposed problems, a chromatograph injector is provided.

The utility model adopts the technical scheme as follows: the utility model provides a chromatograph injector, includes the sampler body, the inside of sampler body is provided with the piston piece, the upside of piston piece is connected with the push rod, the upper end of push rod is connected with and impels the handle, the lower extreme of sampler body is connected with the connector, the syringe needle is installed to connector lower extreme screw thread, there is the installation cover outer end of sampler body through fixed establishment fixed mounting, the outer end of installation cover is provided with the scale bar, the mounting hole has been seted up to the lower extreme of installation cover, the left side of installation cover is connected with the lift seat, lift seat screw thread is installed on the lead screw, the upper end of lead screw runs through the mounting bracket and is connected with the rotation handle, the spout has been seted up to the left side inner wall of mounting bracket.

In a preferred embodiment, the left side of the lifting seat is connected with a ball through a connecting rod, the ball is connected inside the sliding groove in a rolling manner, a supporting transverse plate is arranged on the lower side of the opposite end of the mounting frame, the lower end of the screw rod is movably mounted on a bearing seat, and the bearing seat is arranged at the upper end of the supporting transverse plate on the left side of the mounting frame.

In a preferred embodiment, the bottom of mounting bracket is provided with fixed suction cup, is located the upper end of the support diaphragm on mounting bracket right side is provided with the slide bar, the upper end sliding connection of slide bar has the slider, the left side of slider is connected with installation cover right side outer wall.

In a preferred embodiment, fixed establishment includes fixed inserted bar and spring, the both sides outer end of installation cover is provided with fixed inserted bar, fixed inserted bar outer end cover is equipped with the spring, the both ends of spring are connected with installation cover outer wall, fixed inserted bar outer end respectively, the installation cover is provided with the jack with the both sides of sampler body, fixed inserted bar sets up inside the jack.

In a preferred embodiment, the connector comprises a connector body and an internal thread groove, the internal thread groove is formed in one side of the connector body, the other side of the connector body is communicated with the bottom of the sampler body, an external thread is arranged at the outer end of the needle head, and the internal thread groove is matched with the external thread of the needle head.

In a preferred embodiment, the mounting sleeve has an inner diameter adapted to the outer diameter of the sampler body.

Advantageous effects

Compared with the prior art, the utility model, the advantage that has does:

1. the utility model discloses in, fixed suction cup rotates the handle with mounting bracket fixed mounting in gas chromatograph's upper end through adjusting, drives lift seat up-and-down motion, alright drive sampler body up-and-down motion, and after the position adjustment of sampler body finishes, alright promote the piston piece through impel the handle, arrange the sample into the hue detector inside through the syringe needle and examine, after the position adjustment finishes, the position of every time sampler body all can keep unanimous, has improved the precision of detection.

2. The utility model discloses in, with syringe needle and connector body spiral separation, alright dismantle the syringe needle, during the installation, anticlockwise rotate the syringe needle on the connector body, alright be in the same place syringe needle and connector body fixed mounting, made things convenient for and dismantled and change the syringe needle.

Drawings

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

FIG. 2 is an enlarged schematic sectional view of the fixing mechanism of the present invention;

fig. 3 is a schematic diagram of the structure of the mounting sleeve of the present invention;

fig. 4 is a schematic diagram of the structure of the connector according to the present invention.

The labels in the figure are: the device comprises a push handle 1, a rotary handle 2, a mounting rack 3, a lifting seat 4, a ball 5, a sliding chute 6, a screw rod 7, a piston block 8, a bearing seat 9, a fixed sucker 10, a connector 11, a connector body 111, a threaded groove 112, a needle head 12, a fixed mechanism 13, a fixed inserted rod 131, a spring 132, a supporting transverse plate 14, a mounting sleeve 15, a sliding block 16, a sliding rod 17, a sampler body 18, a push rod 19 and a scale bar 20.

Detailed Description

The invention will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-4, a chromatograph sample injector comprises a sampler body 18, a piston block 8 is arranged inside the sampler body 18, a push rod 19 is connected to the upper side of the piston block 8, a push handle 1 is connected to the upper end of the push rod 19, the piston block 8 is pushed by the push handle 1, a sample is discharged into a hue detector through a needle 12 for inspection, a connector 11 is connected to the lower end of the sampler body 18, the needle 12 is installed on the lower end of the connector 11 through threads, an installation sleeve 15 is fixedly installed at the outer end of the sampler body 18 through a fixing mechanism 13, a scale bar 20 is arranged at the outer end of the installation sleeve 15, the scale bar 20 is marked on the installation sleeve 15 and can be adjusted according to different sampling depth requirements of different measurement sets, an installation hole is formed at the lower end of the installation sleeve 15, a lifting seat 4 is connected to the left side of the installation sleeve 15, the lifting seat 4 is installed on a screw rod 7, the upper end of lead screw 7 runs through mounting bracket 3 and is connected with rotation handle 2, spout 6 has been seted up to the left side inner wall of mounting bracket 3, rotate handle 2 through adjusting, it rotates to rotate handle 2 and drive lead screw 7, in the cooperation through ball 5 and spout 6, alright drive lift seat 4 up-and-down motion, lift seat 4 up-and-down motion alright drive slider 16 up-and-down motion on slide bar 17, alright drive the up-and-down motion of installation cover 15, alright drive sampler body 18 up-and-down motion.

It should be noted that the left side of the lifting seat 4 is connected with a ball 5 through a connecting rod, the ball 5 is connected inside the chute 6 in a rolling manner, a supporting transverse plate 14 is arranged at the lower side of the opposite end of the mounting frame 3, the lower end of the screw rod 7 is movably mounted on a bearing seat 9, and the bearing seat 9 is arranged at the upper end of the supporting transverse plate 14 positioned at the left side of the mounting frame 3.

It should be noted that the bottom of mounting bracket 3 is provided with fixed suction cup 10, through fixed suction cup 10 with mounting bracket 3 fixed mounting in gas chromatograph's upper end, the upper end that is located the support diaphragm 14 on mounting bracket 3 right side is provided with slide bar 17, slide bar 17's upper end sliding connection has slider 16, slider 16's left side is connected with the outer wall in installation cover 15 right side.

It should be noted that, the fixing mechanism 13 includes a fixed inserted bar 131 and a spring 132, the outer ends of the two sides of the installation sleeve 15 are provided with the fixed inserted bar 131, the outer end sleeve of the fixed inserted bar 131 is provided with the spring 132, the two ends of the spring 132 are respectively connected with the outer wall of the installation sleeve 15 and the outer end of the fixed inserted bar 131, the two sides of the installation sleeve 15 and the sampler body 18 are provided with jacks, the fixed inserted bar 131 is arranged inside the jack, the sampler body 18 is placed inside the installation sleeve 15, and the sampler body 18 and the installation sleeve 15 are fixed through the cooperation of the fixed inserted bar 131 and the spring 132.

It should be noted that the connector 11 includes a connector body 111 and an internal thread groove 112, the internal thread groove 112 is provided inside one side of the connector body 111, the other side of the connector body 111 is communicated with the bottom of the sampler body 18, the outer end of the needle 12 is provided with an external thread, the internal thread groove 112 is matched with the external thread of the needle 12, the needle 12 is spirally separated from the connector body 111, the needle 12 can be detached, during installation, the needle 12 is rotated on the connector body 111 counterclockwise, and the needle 12 and the connector body 111 can be fixedly mounted together.

It should be noted that the inner diameter of the mounting sleeve 15 is adapted to the outer diameter of the sampler body 18.

The working principle is as follows:

when the device is used, firstly, the sampler body 18 is placed in the installation sleeve 15, the sampler body 18 and the installation sleeve 15 are fixed through the matching of the fixed inserted rod 131 and the spring 132, then the installation frame 3 is fixedly installed at the upper end of the gas chromatograph through the fixed sucker 10, the rotating handle 2 is adjusted to drive the screw rod 7 to rotate, the lifting seat 4 can be driven to move up and down through the matching of the ball 5 and the chute 6, the lifting seat 4 can drive the sliding block 16 to move up and down on the sliding rod 17 through the up and down movement, the installation sleeve 15 can be driven to move up and down, the sampler body 18 can be driven to move up and down, after the position adjustment of the sampler body 18 is finished, the piston block 8 can be pushed through the pushing handle 1, a sample is discharged into the hue detector through the needle 12 for inspection, after the position adjustment is finished, the position of the sampler body 18 can be kept consistent each time, the detection accuracy is improved.

The mark has scale bar 20 on the installation cover 15, can adjust the difference of advancing the appearance degree of depth requirement according to different measurement sets, with syringe needle 12 and connector body 111 spiral separation, alright dismantle syringe needle 12, during the installation, anticlockwise rotate syringe needle 12 on connector body 111, alright be in the same place syringe needle 12 and connector body 111 fixed mounting.

The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.

Claims

1. Chromatograph injector comprising an injector body (18), characterized in that: a piston block (8) is arranged in the sampler body (18), the upper side of the piston block (8) is connected with a push rod (19), the upper end of the push rod (19) is connected with a pushing handle (1), the lower end of the sampler body (18) is connected with a connector (11), a needle head (12) is installed at the lower end of the connector (11) in a threaded manner, an installation sleeve (15) is fixedly installed at the outer end of the sampler body (18) through a fixing mechanism (13), the outer end of the mounting sleeve (15) is provided with a scale bar (20), the lower end of the mounting sleeve (15) is provided with a mounting hole, the left side of the mounting sleeve (15) is connected with a lifting seat (4), the lifting seat (4) is installed on the screw rod (7) in a threaded manner, the upper end of lead screw (7) runs through mounting bracket (3) and is connected with rotation handle (2), spout (6) have been seted up to the left side inner wall of mounting bracket (3).

2. The chromatograph injector of claim 1, wherein: the left side of lift seat (4) is connected with ball (5) through the connecting rod, ball (5) roll connection is inside spout (6), the relative one end downside of mounting bracket (3) is provided with supports diaphragm (14), the lower extreme movable mounting of lead screw (7) is on bearing frame (9), bearing frame (9) set up the upper end that is located the left support diaphragm (14) of mounting bracket (3).

3. The chromatograph injector of claim 1, wherein: the bottom of mounting bracket (3) is provided with fixed suction cup (10), is located the upper end of support diaphragm (14) on mounting bracket (3) right side is provided with slide bar (17), the upper end sliding connection of slide bar (17) has slider (16), the left side of slider (16) is connected with installation cover (15) right side outer wall.

4. The chromatograph injector of claim 1, wherein: fixed establishment (13) are including fixed inserted bar (131) and spring (132), the both sides outer end of installation cover (15) is provided with fixed inserted bar (131), fixed inserted bar (131) outer end cover is equipped with spring (132), the both ends of spring (132) are connected with installation cover (15) outer wall, fixed inserted bar (131) outer end respectively, the both sides of installation cover (15) and sampler body (18) are provided with the jack, fixed inserted bar (131) set up inside the jack.

5. The chromatograph injector of claim 1, wherein: connector (11) are including connector body (111) and internal thread groove (112), internal thread groove (112) have been seted up to one side inside of connector body (111), the opposite side and sampler body (18) bottom of connector body (111) are linked together, the outer end of syringe needle (12) is provided with the external screw thread, internal thread groove (112) and the external screw thread looks adaptation of syringe needle (12).

6. The chromatograph injector of claim 1, wherein: the inner diameter of the mounting sleeve (15) is matched with the outer diameter of the sampler body (18).