CN214539414U

CN214539414U - Gas chromatograph

Info

Publication number: CN214539414U
Application number: CN202120274851.0U
Authority: CN
Inventors: 姜春林; 石亚群; 吕虹慧; 高春婷
Original assignee: Yantai Construction Engineering Testing Service Center Co ltd
Current assignee: Yantai Construction Engineering Testing Service Center Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-10-29
Anticipated expiration: 2031-01-30

Abstract

The application relates to a gas chromatograph, it includes the test box, and the top detachable connection of test box has the case lid, has seted up the introduction port on the case lid, is equipped with chromatographic column, its characterized in that in the test box: have the clearance brush along vertical direction sliding connection on the case lid, the backup pad has set firmly along the horizontal direction in the test box, has the shift plate along horizontal direction sliding connection in the backup pad, the one end of shift plate and the feed end fixed connection of chromatographic column, when the backup pad was kept away from to the chromatographic column, the feed end of chromatographic column was arranged in under the introduction port, when the chromatographic column was close to the backup pad, the feed end of chromatographic column was arranged in under the clearance brush. This application has the effect that makes the clean process of chromatographic column simple convenient more.

Description

Gas chromatograph

Technical Field

The application relates to the field of chromatographic detection, in particular to a gas chromatograph.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology. Can be used for analyzing heat-stable organic matters with the boiling point not more than 500 ℃ in soil, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate ester and the like.

Chinese patent publication No. CN106483206A discloses a gas chromatograph including: a temperature adjusting part for adjusting the temperature in the constant temperature box and a detector substrate connected to the detector, wherein the temperature adjusting part substrate is arranged on the front surface side in the frame body.

Aiming at the related technologies, the inventor finds that in the using process of the gas chromatograph, the sample introduction end of the chromatographic column is easily polluted, the chromatographic column needs to be cleaned and replaced regularly by a user, and the chromatographic column has the defect of complex use in the cleaning process when in use.

SUMMERY OF THE UTILITY MODEL

In order to make the clean process of chromatographic column more convenient, the application provides a gas chromatograph.

The application provides a gas chromatograph adopts following technical scheme:

the utility model provides a gas chromatograph, includes the test box, and the top detachable of test box has the case lid, has seted up the introduction port on the case lid, is equipped with chromatographic column, its characterized in that in the test box: have the clearance brush along vertical direction sliding connection on the case lid, the backup pad has set firmly along the horizontal direction in the test box, has the shift plate along horizontal direction sliding connection in the backup pad, the one end of shift plate and the feed end fixed connection of chromatographic column, when the backup pad was kept away from to the chromatographic column, the feed end of chromatographic column was arranged in under the introduction port, when the chromatographic column was close to the backup pad, the feed end of chromatographic column was arranged in under the clearance brush.

By adopting the technical scheme, the test box is used for detecting the sample in the test box, the box cover enables the environment in the test box to be relatively sealed when the test box works, and the liquid sample passes through the chromatographic column to facilitate the chromatographic detection work of the sample by the test box; the shifting plate and the chromatographic column are fixed on the required positions by the supporting plate, when the test box works, the shifting plate drives the chromatographic column to be far away from the supporting plate, and the feeding end of the chromatographic column is arranged right below the sample inlet, so that a sample can conveniently enter the chromatographic column; when the work of clearing up the chromatographic column is carried out to needs, the shifting board drives the chromatographic column and is close to the backup pad, and the feed end of chromatographic column is arranged in under the clearance brush, and the cleaning brush reciprocates and clears up the feed end of chromatographic column, and then makes the clean process of chromatographic column more convenient.

Optionally, the test box internal rotation is connected with the swinging arms, has seted up the swing groove along backup pad length direction in the backup pad, and the upper end of swinging arms passes the swing groove and with shift plate swing joint, and the axis of rotation of swinging arms is located the tip that the backup pad was kept away from to the swinging arms and sets up along the direction of perpendicular to backup pad length direction.

By adopting the technical scheme, the swing rod rotates around the rotating shaft of the swing rod, the position of the upper end part of the swing rod moves along the length direction of the supporting plate in the horizontal direction, and the swing rod penetrates through the swing groove to drive the shifting plate to move along the length direction of the supporting plate, so that the shifting function of the shifting plate is realized.

Optionally, a shift motor is fixedly arranged in the test box along the horizontal direction, a shift gear is coaxially and fixedly arranged on an output shaft of the shift motor, a sliding block is arranged on the shift gear, a sliding groove is formed in the oscillating rod along the length direction of the oscillating rod, and the sliding block is movably connected with the sliding groove.

By adopting the technical scheme, the shifting motor provides power for the rotation of the shifting gear, the shifting gear enables the sliding block to rotate around the circle center of the shifting gear, the sliding block and the sliding groove move relatively, and then the position of the upper end part of the swing rod is driven to change, so that the automatic swing function of the swing rod is realized.

Optionally, the sliding block is connected with the rotation of the shifting gear, the rotating shaft of the sliding block is arranged along the horizontal direction, and the sliding block is connected with the sliding groove in a rolling manner.

Through adopting above-mentioned technical scheme, when the relative position of sliding block and sliding tray changed, the sliding block was arranged in the sliding tray and is rolled, made the frictional force between sliding block and the sliding tray reduce, and then made the process that the sliding block drove the sliding tray and removed more smoothly.

Optionally, a shifting groove is formed in the lower end portion of the shifting plate along the length direction of the shifting plate, a shifting roller is rotatably connected to the shifting groove along the horizontal direction, and the shifting roller is arranged in the sliding groove and is in rolling connection with the sliding groove.

Through adopting above-mentioned technical scheme, when the swinging arms swing, the upper end of swinging arms is put in the shift groove and is swung, and the gyro wheel that shifts is arranged in the sliding tray and is rolled this moment, and the gyro wheel that shifts cooperatees with the sliding tray makes the swinging arms drive the function that the shifting plate was arranged in the horizontal direction and is removed more perfect.

Optionally, a guide groove is formed in the support plate along the length direction of the support plate, a shifting block is fixedly arranged at the lower end of the shifting plate, and the shifting block is slidably connected with the guide groove.

Through adopting above-mentioned technical scheme, when shifting board and backup pad relative movement, the piece that shifts slides each other with the guide way, and the piece that shifts mutually supports with the guide way and makes the relative slip process between shifting board and the backup pad difficult skew more stable.

Optionally, the width of the shifting block far away from the end of the shifting plate is larger than the width of the shifting block near the end of the shifting plate.

Through adopting above-mentioned technical scheme, when aversion piece and guide way relative movement, the guide way will shift the piece joint in the guide way, and then makes the aversion process of piece in the guide way more stable.

Optionally, a lifting motor is fixedly arranged on the box cover along the vertical direction, a rotating ridge rod is coaxially and fixedly arranged on an output shaft of the lifting motor, a lifting screw rod is coaxially and slidably connected outside the rotating ridge rod, the lifting screw rod is in threaded connection with the box cover, and the lower end of the lifting screw rod is coaxially and fixedly connected with the cleaning brush.

Through adopting above-mentioned technical scheme, elevator motor provides power for the rotation that rotates the arris pole, rotates the arris pole and drives the lifting screw and rotate, because lifting screw and case lid threaded connection, so lifting screw goes up and down at the test box internal rotation this moment, and lifting screw drives the clearance brush and rotates the removal clearance to the chromatographic column, and then makes the clearance effect of clearance brush better.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the shifting plate and the chromatographic column are fixed on the required positions by the supporting plate, when the test box works, the shifting plate drives the chromatographic column to be far away from the supporting plate, and the feeding end of the chromatographic column is arranged right below the sample inlet, so that a sample can conveniently enter the chromatographic column; when the chromatographic column needs to be cleaned, the shifting plate drives the chromatographic column to be close to the supporting plate, the feed end of the chromatographic column is arranged right below the cleaning brush, and the cleaning brush moves up and down to clean the feed end of the chromatographic column, so that the cleaning process of the chromatographic column is more convenient;

2. the swing rod rotates around a rotating shaft of the swing rod, the position of the upper end part of the swing rod moves along the length direction of the supporting plate in the horizontal direction, and the swing rod penetrates through the swing groove to drive the shifting plate to move along the length direction of the supporting plate, so that the shifting function of the shifting plate is realized;

3. the lifting motor provides power for rotating the arris pole, rotates the arris pole and drives the lifting screw and rotate, because lifting screw and case lid threaded connection, so lifting screw goes up and down at the test box internal rotation this moment, and lifting screw drives the clearance brush and carries out the removal clearance of rotating to the chromatographic column, and then makes the clearance effect of clearance brush better.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a partially enlarged view of a in fig. 1.

Fig. 3 is a schematic structural diagram of a displacement motor and a cleaning brush in an embodiment of the application.

Fig. 4 is a sectional view of the shift groove and the shift roller in the embodiment of the present application.

Description of reference numerals: 1. a test box; 2. a box cover; 3. a sample inlet; 4. a chromatographic column; 5. cleaning the brush; 6. a support plate; 7. a shifting plate; 8. a swing lever; 9. a swing groove; 10. a displacement motor; 11. a shift gear; 12. a slider; 13. a sliding groove; 14. a shifting groove; 15. a shifting roller; 16. a guide groove; 17. a shift block; 18. a lifting motor; 19. rotating the prism rod; 20. and lifting the screw rod.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses gas chromatograph, refers to fig. 1, including test box 1, the top detachable connection of test box 1 has case lid 2, is provided with detection device (not marking in the picture) in the test box 1, and this department detection device is prior art, does not need to be repeated. When the test box 1 is used, the box cover 2 is closed to enable the environment inside the test box 1 to be relatively sealed when the test box works, and the detection device performs chromatographic detection on samples.

Referring to fig. 2 and 3, a circular sample inlet 3 is formed in the case cover 2, and a chromatographic column 4 is disposed in the test case 1, wherein the chromatographic column 4 is made of a deformable material. The user injects the liquid sample into the chromatographic column 4 from the sample inlet 3 through the injector, and the chromatographic column 4 disperses the liquid sample, so that the detection device can conveniently carry out chromatographic detection on the sample.

Referring to fig. 2 and 3, there is a cleaning brush 5 movably connected to the case cover 2 along the vertical direction, the cleaning brush 5 is disposed on one side of the sample inlet 3, the cleaning brush 5 passes through the case cover 2, and when the cleaning brush 5 is disposed in the test box 1, the cleaning brush 5 is slidably connected to the inner wall of the chromatographic column 4. When the user need clear up the operation to chromatographic column 4, the cleaning brush reciprocates and clears up the feed end of chromatographic column 4, and then makes chromatographic column 4's clean process more convenient.

Referring to fig. 2 and 3, a lifting motor 18 is fixedly arranged on the case cover 2 along the vertical direction, a rotating ridge rod 19 is coaxially and fixedly arranged on an output shaft of the lifting motor 18, a lifting screw 20 is coaxially and slidably connected outside the rotating ridge rod 19, the lifting screw 20 is in threaded connection with the case cover 2, and the lower end part of the lifting screw 20 is coaxially and fixedly connected with the upper end face of the cleaning brush 5. When the cleaning brush 5 works, the output shaft of the lifting motor 18 rotates to enable the rotating ridge rod 19 to drive the lifting screw rod 20 to rotate, and the lifting screw rod 20 is in threaded connection with the box cover 2, so that the lower end part of the lifting screw rod 20 rotates and goes up and down in the test box 1 at the moment, the lifting screw rod 20 drives the cleaning brush 5 to rotate and go up and down to clean the chromatographic column 4 in a rotating and moving mode, and then the cleaning effect of the cleaning brush 5 is better.

Referring to fig. 3 and 4, a rectangular supporting plate 6 is fixedly arranged in the test box 1 along the horizontal direction, the length direction of the supporting plate 6 is parallel to the connecting line of the circle center of the sample inlet 3 and the circle center of the cleaning brush 5, a shifting plate 7 is connected to the supporting plate 6 in a sliding manner along the horizontal direction, the shifting plate 7 slides along the length direction of the supporting plate 6, and one end of the shifting plate 7 is fixedly connected with the feeding end of the chromatographic column 4. When the chromatographic column 4 is far away from the support plate 6, the feeding end of the chromatographic column 4 is arranged right below the sample inlet 3; when the chromatography column 4 is close to the support plate 6, the feed end of the chromatography column 4 is placed directly below the cleaning brush 5. When the test box 1 works, the support plate 6 fixes the shifting plate 7 and the chromatographic column 4 at required positions, the shifting plate 7 moves to drive the chromatographic column 4 to move towards the direction far away from the support plate 6, and the shifting plate 7 moves the feeding end of the chromatographic column 4 to be arranged right below the sample inlet 3, so that a sample can conveniently enter the chromatographic column 4; when the user need clear up the work to chromatographic column 4, shift plate 7 drives chromatographic column 4 and removes to the direction that is close to backup pad 6, places the feed end removal of chromatographic column 4 under clearance brush 5 in, is convenient for clear up brush 5 and clears up the operation to chromatographic column 4.

Referring to fig. 3 and 4, a guide groove 16 is formed in the upper end surface of the support plate 6 along the length direction of the support plate 6, a displacement block 17 is fixedly arranged at the lower end portion of the displacement plate 7 along the length direction of the displacement plate 7, and the displacement block 17 is arranged in the guide groove 16 and is in sliding connection with the guide groove 16. When the chromatographic column 4 moves, the shifting plate 7 and the support plate 6 move relatively, at the moment, the shifting block 17 and the guide groove 16 slide mutually, and the shifting block 17 and the guide groove 16 are matched mutually, so that the relative sliding process between the shifting plate 7 and the support plate 6 is more stable and is not easy to shift.

Referring to fig. 3 and 4, the width of the shifting block 17 far away from the end of the shifting plate 7 is larger than the width of the shifting block 17 near the end of the shifting plate 7, the cross section of the shifting block 17 is in an inverted "T" shape, and the shifting block 17 is matched with the guide groove 16. When the shifting block 17 and the guide groove 16 move relatively, the guide groove 16 clamps the shifting block 17 in the guide groove 16, so that the shifting process of the shifting block 17 in the guide groove 16 is more stable.

Referring to fig. 3 and 4, the test box 1 is rotatably connected with a swing rod 8, a swing groove 9 is formed in the support plate 6 along the length direction of the support plate 6, the upper end of the swing rod 8 penetrates through the swing groove 9 and is movably connected with the displacement plate 7, and the rotation shaft of the swing rod 8 is arranged at the end of the swing rod 8 far away from the support plate 6 along the direction perpendicular to the length direction of the support plate 6. When the chromatographic column 4 moves, the swing rod 8 rotates around the rotating shaft thereof, the position of the upper end part of the swing rod 8 moves along the length direction of the support plate 6 in the horizontal direction at the moment, and the swing rod 8 passes through the swing groove 9 to drive the shifting plate 7 to move along the length direction of the support plate 6, so that the shifting function of the shifting plate 7 is realized.

Referring to fig. 3 and 4, a shifting groove 14 is formed in the lower end portion of the shifting plate 7 along the length direction of the shifting plate 7, a shifting roller 15 is rotatably connected to the shifting groove 14 along the horizontal direction, a sliding groove 13 is formed in the oscillating rod 8 along the length direction of the oscillating rod 8, and the shifting roller 15 is arranged in the sliding groove 13 and is in rolling connection with the sliding groove 13. When the swing rod 8 swings, the upper end of the swing rod 8 is placed in the shifting groove 14 to swing, the shifting roller 15 is placed in the sliding groove 13 to roll, and the shifting roller 15 is matched with the sliding groove 13 to enable the swing rod 8 to drive the shifting plate 7 to move in the horizontal direction.

Referring to fig. 3 and 4, a shift motor 10 is fixedly arranged in the test box 1 along the horizontal direction, a shift gear 11 is coaxially and fixedly arranged on an output shaft of the shift motor 10, a sliding block 12 is arranged on the shift gear 11, and the sliding block 12 is movably connected with a sliding groove 13. When the shifting plate 7 moves, the shifting motor 10 rotates to drive the shifting gear 11 to rotate, the shifting gear 11 rotates to enable the sliding block 12 to rotate around the circle center of the shifting gear 11, at the moment, the sliding block 12 and the sliding groove 13 move relatively, and then the position of the upper end of the swing rod 8 is driven to change, and the automatic swing function of the swing rod 8 is achieved.

Referring to fig. 3 and 4, slide block 12 has a cylindrical shape, slide block 12 is rotatably coupled to shift gear 11, the rotational axis of slide block 12 is arranged in the horizontal direction, and slide block 12 is rotatably coupled to slide groove 13. When the relative position of sliding block 12 and sliding groove 13 changes, sliding block 12 is placed in sliding groove 13 to roll, so that the friction between sliding block 12 and sliding groove 13 is reduced, and the process of sliding block 12 driving sliding groove 13 to move is smoother.

The implementation principle of the gas chromatograph in the embodiment of the application is as follows: when the user need clear up the work to chromatographic column 4, shift motor 10 drives shift gear 11 and rotates, make sliding block 12 rotate around shift gear 11's centre of a circle, sliding block 12 and sliding tray 13 relative movement drive the swing rod 8 swing, swing rod 8 passes swing tank 9 this moment and drives shift plate 7 and remove along the length direction of backup pad 6, shift plate 7 drives chromatographic column 4 and is close to backup pad 6, make chromatographic column 4's feed end arrange in under clearance brush 5, elevator motor 18 drives the rotatory lift removal of cleaning brush and clears up chromatographic column 4's feed end, and then make chromatographic column 4's cleaning process more convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a gas chromatograph, includes test box (1), the top detachable connection of test box (1) has case lid (2), has seted up introduction port (3) on case lid (2), is equipped with chromatographic column (4), its characterized in that in test box (1): there are clearance brush (5) along vertical direction sliding connection on case lid (2), backup pad (6) have set firmly along the horizontal direction in test box (1), there are shifting plate (7) along horizontal direction sliding connection on backup pad (6), the one end of shifting plate (7) and the feed end fixed connection of chromatographic column (4), when backup pad (6) are kept away from in chromatographic column (4), the feed end of chromatographic column (4) is arranged in under introduction port (3), when chromatographic column (4) are close to backup pad (6), the feed end of chromatographic column (4) is arranged in under clearance brush (5).

2. A gas chromatograph according to claim 1, wherein: test box (1) internal rotation is connected with swinging arms (8), has seted up swing groove (9) along backup pad (6) length direction on backup pad (6), and the upper end of swinging arms (8) passes swing groove (9) and with shifting board (7) swing joint, and the axis of rotation of swinging arms (8) is located the tip that backup pad (6) were kept away from in swinging arms (8) and sets up along the direction of perpendicular to backup pad (6) length direction.

3. A gas chromatograph according to claim 2, wherein: the test box (1) is internally and fixedly provided with a shifting motor (10) along the horizontal direction, an output shaft of the shifting motor (10) is coaxially and fixedly provided with a shifting gear (11), the shifting gear (11) is provided with a sliding block (12), the swinging rod (8) is provided with a sliding groove (13) along the length direction of the swinging rod (8), and the sliding block (12) is movably connected with the sliding groove (13).

4. A gas chromatograph according to claim 3, wherein: and the sliding block (12) is rotationally connected with the shifting gear (11), the rotating shaft of the sliding block (12) is arranged along the horizontal direction, and the sliding block (12) is in rolling connection with the sliding groove (13).

5. A gas chromatograph according to claim 3, wherein: the lower end of the shifting plate (7) is provided with a shifting groove (14) along the length direction of the shifting plate (7), a shifting roller (15) is rotatably connected in the shifting groove (14) along the horizontal direction, and the shifting roller (15) is arranged in the sliding groove (13) and is in rolling connection with the sliding groove (13).

6. A gas chromatograph according to claim 1, wherein: a guide groove (16) is formed in the supporting plate (6) along the length direction of the supporting plate (6), a shifting block (17) is fixedly arranged at the lower end of the shifting plate (7), and the shifting block (17) is connected with the guide groove (16) in a sliding mode.

7. A gas chromatograph according to claim 6, wherein: the width of the end part of the displacement block (17) far away from the displacement plate (7) is larger than the width of the end part of the displacement block (17) close to the displacement plate (7).

8. A gas chromatograph according to claim 1, wherein: the box cover (2) is fixedly provided with a lifting motor (18) along the vertical direction, an output shaft of the lifting motor (18) is coaxially and fixedly provided with a rotating ridge rod (19), the outer portion of the rotating ridge rod (19) is coaxially and slidably connected with a lifting screw (20), the lifting screw (20) is in threaded connection with the box cover (2), and the lower end portion of the lifting screw (20) is coaxially and fixedly connected with the cleaning brush (5).