CN219245469U

CN219245469U - Sampling structure of liquid chromatograph

Info

Publication number: CN219245469U
Application number: CN202223526343.0U
Authority: CN
Inventors: 罗司玉
Original assignee: Zhongwei Guangxin Technology Qingdao Co ltd
Current assignee: Zhongwei Guangxin Technology Qingdao Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-23
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of liquid chromatograph instruments, in particular to a sampling structure of a liquid chromatograph instrument, which is characterized in that a plurality of samples are placed into a driving device, the position of the sampling device is adjusted by the driving device, the sampling device samples the samples and conveys the samples to a designated position, and then the used sampling device is cleaned by a cleaning device, so that the practicability of equipment is improved; comprises a driving device; the device also comprises a sampling device and a cleaning device, wherein the sampling device is arranged on the driving device, and the cleaning device is arranged on the sampling device; the driving device adjusts the position of the sampling device, and the cleaning device cleans the inside of the sampling device.

Description

Sampling structure of liquid chromatograph

Technical Field

The utility model relates to the technical field of liquid chromatography instruments, in particular to a sampling structure of a liquid chromatography instrument.

Background

The liquid chromatograph is the instrument and equipment that uses the high-performance liquid chromatography principle, mainly used analysis high boiling point is difficult volatile, be heated unstable and the organic compound that the molecular weight is big, general chromatograph sampling structure adopts artifical sample and advances the appearance basically, but also have automatic sample and advance the appearance, the sampling structure of a liquid chromatograph that puts forward in the patent of application number CN202023315384.6 like, it mainly comprises box moving structure and suction structure, regulate and control through the PLC controller during the use, first servo motor operation, first servo motor drives the belt pulley and rotates, the belt pulley passes through the belt and drives the worm and rotate, the worm drives the turbine and rotate, the left side end and the bearing fixed connection of screw rod, the screw rod drives the connecting block and moves left, carry out stable removal, the rack board drives the syringe and absorbs the sample, carry out quick sample, but its structure is simpler, inconvenient after the use washs the inside of suction structure, when taking a sample to another kind again, cause sample pollution easily, consequently, the practicality is relatively poor needs to improve current equipment.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a sampling structure of a liquid chromatograph, which is characterized in that a plurality of samples are placed in a driving device, the position of the sampling device is adjusted by the driving device, the sampling device samples the samples and is conveyed to a designated position, and then the used sampling device is cleaned by a cleaning device, so that the practicability of the equipment is improved.

The utility model relates to a sampling structure of a liquid chromatograph, which comprises a driving device; the device also comprises a sampling device and a cleaning device, wherein the sampling device is arranged on the driving device, and the cleaning device is arranged on the sampling device;

the driving device is used for adjusting the position of the sampling device, and the cleaning device is used for cleaning the inside of the sampling device;

the multiple samples are placed in the driving device, the position of the sampling device is adjusted through the driving device, the sampling device samples the samples and conveys the samples to the appointed position, and then the used sampling device is cleaned through the cleaning device, so that the practicability of the equipment is improved.

Preferably, the driving device comprises a box body, a plurality of groups of sample boxes, a first motor, a screw rod, a guide post and a sliding block, wherein the front end of the box body is provided with a box door, the plurality of groups of sample boxes are all arranged in the box body, the first motor is arranged at the side end of the box body, two ends of the screw rod are all rotatably arranged on the inner wall of the box body, one end of the screw rod is connected with an output shaft of the first motor, two ends of the guide post are all fixedly arranged on the inner wall of the box body, the screw rod and the guide post penetrate through the sliding block, and the surface of the screw rod is in threaded connection with the middle part in the sliding block; the multiple samples are stored through the multiple groups of sample boxes respectively, the first motor is turned on, the sliding block transversely slides on the guide post through screw transmission, and the position of the sampling device is adjusted, so that the practicability of the device is improved.

Preferably, the sampling device comprises two groups of brackets, two groups of side plates, a rotating shaft, a second motor, two groups of first electric cylinders and two groups of sampling mechanisms, wherein the top ends of the two groups of brackets are connected with the bottom ends of the sliding blocks, the two groups of side plates are respectively arranged on the two groups of brackets, the rotating shaft is rotatably arranged at the bottom of the two groups of side plates, the second motor is arranged on one group of side plates, the output shaft of the second motor is connected with the side end of the rotating shaft, one ends of the two groups of first electric cylinders are respectively connected with the top end and the bottom end of the rotating shaft, and the two groups of sampling mechanisms are respectively arranged at the other ends of the two groups of first electric cylinders; stretching a group of first electric cylinders, stretching a group of sampling mechanisms into a group of sample boxes for sampling, moving through a sliding block, enabling the group of sampling mechanisms to discharge samples to a designated position, opening a second motor, driving a rotating shaft to rotate by one hundred eighty degrees, transposing two groups of sampling mechanisms, cleaning the used sampling mechanisms through a cleaning device, and simultaneously sampling through another group of sampling mechanisms, so that the practicability of the equipment is improved.

Preferably, the sampling mechanism comprises an injector, a rack, a third motor and a gear, wherein the injector is arranged at the other end of the first electric cylinder through a supporting plate, one end of the rack is connected with a piston in the first electric cylinder, the third motor is fixedly arranged on the supporting plate, the side end of the gear is connected with an output shaft of the third motor, and the front end of the gear is meshed and connected with the rear end of the rack; and the third motor is started, and the piston is driven to slide through the meshing transmission of the gear and the rack, so that samples or clear water is sucked into the injector, and the practicability of the equipment is improved.

Preferably, the cleaning device comprises a water tank, a second electric cylinder, a vacuum pump, an electromagnetic valve and a rubber tube, wherein the bottom end of the water tank is arranged at the top ends of the two groups of side plates through a plurality of groups of second electric cylinders, the left end and the right end of the water tank are respectively provided with a water inlet valve and a water outlet valve, the bottom end of the vacuum pump is connected with the top end of the water tank, an air suction port of the vacuum pump is communicated with the inside of the water tank, and the top end of the rubber tube is connected with the bottom end of the water tank through the electromagnetic valve; the water inlet pipe and the water outlet pipe are respectively connected with the water inlet valve and the water outlet valve of the water tank, the top end of the top injector stretches into the rubber pipe through the shrinkage of the plurality of groups of second electric cylinders, the electromagnetic valve and the third motor are opened, clean water is sucked into the injector, the third motor reversely operates, water in the injector is discharged back into the water tank, cleaning is completed, the plurality of groups of second electric cylinders stretch and reset, the vacuum pump is opened to discharge air in the water tank, negative pressure is formed in the water tank, the electromagnetic valve is closed, dropped clean water is reduced, water in the water tank is discharged through the water outlet pipe, and then clean water is discharged into the water tank through the water inlet pipe, so that the practicability of the device is improved.

Compared with the prior art, the utility model has the beneficial effects that: the multiple samples are placed in the driving device, the position of the sampling device is adjusted through the driving device, the sampling device samples the samples and conveys the samples to the appointed position, and then the used sampling device is cleaned through the cleaning device, so that the practicability of the equipment is improved.

Drawings

FIG. 1 is a schematic elevational cross-sectional view of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is an enlarged schematic diagram of the sampling device of the present utility model;

FIG. 4 is a schematic diagram of an enlarged axial measurement structure of the sampling mechanism of the present utility model;

the reference numerals in the drawings: 1. a case; 2. a door; 3. a sample cartridge; 4. a first motor; 5. a screw rod; 6. a guide post; 7. a slide block; 8. a bracket; 9. a side plate; 10. a rotating shaft; 11. a second motor; 12. a first electric cylinder; 13. a syringe; 14. a rack; 15. a third motor; 16. a gear; 17. a water tank; 18. a second electric cylinder; 19. a vacuum pump; 20. an electromagnetic valve; 21. a rubber tube.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Example 1

Comprises a driving device; the device also comprises a sampling device and a cleaning device, wherein the sampling device is arranged on the driving device, and the cleaning device is arranged on the sampling device;

the driving device comprises a box body 1, a plurality of groups of sample boxes 3, a first motor 4, a lead screw 5, a guide post 6 and a sliding block 7, wherein the front end of the box body 1 is provided with a box door 2, the plurality of groups of sample boxes 3 are all arranged in the box body 1, the first motor 4 is arranged at the side end of the box body 1, two ends of the lead screw 5 are all rotatably arranged on the inner wall of the box body 1, one end of the lead screw 5 is connected with an output shaft of the first motor 4, two ends of the guide post 6 are all fixedly arranged on the inner wall of the box body 1, the lead screw 5 and the guide post 6 penetrate through the sliding block 7, and the surface of the lead screw 5 is in threaded connection with the middle part in the sliding block 7;

deposit multiple sample respectively through multiunit sample box 3, open first motor 4, through lead screw 5 transmission, make slider 7 transversely slide on guide post 6, adjust sampling device's position, make sampling device sample to the assigned position, later wash sampling device after using through belt cleaning device, thereby improve equipment's practicality.

Example 2

the sampling device comprises two groups of brackets 8, two groups of side plates 9, a rotating shaft 10, a second motor 11, two groups of first electric cylinders 12 and two groups of sampling mechanisms, wherein the top ends of the two groups of brackets 8 are connected with the bottom ends of the sliding blocks 7, the two groups of side plates 9 are respectively arranged on the two groups of brackets 8, the rotating shaft 10 is rotatably arranged at the bottoms of the two groups of side plates 9, the second motor 11 is arranged on one group of side plates 9, the output shaft of the second motor 11 is connected with the side end of the rotating shaft 10, one ends of the two groups of first electric cylinders 12 are respectively connected with the top ends and the bottom ends of the rotating shaft 10, and the two groups of sampling mechanisms are respectively arranged at the other ends of the two groups of first electric cylinders 12;

the multiple samples are stored through the multiple groups of sample boxes 3, the first motor 4 is opened, the slide block 7 transversely slides on the guide post 6 through the transmission of the lead screw 5, the position of the sampling device is adjusted, the sampling mechanism stretches through the first electric cylinders 12, the sampling mechanism stretches into the sample boxes 3 to sample, the slide block 7 moves, the sampling mechanism discharges the samples to the corresponding positions, the second motor 11 is opened, the rotating shaft 10 is driven to rotate by one hundred eighty degrees, the two groups of sampling mechanisms are transposed, the used sampling mechanisms are cleaned through the cleaning device, and meanwhile, the sampling work is performed through the sampling mechanism, so that the practicability of the device is improved.

As shown in fig. 1 to 4, in the sampling structure of a liquid chromatograph according to the present utility model, when in operation, a plurality of samples are stored by a plurality of groups of sample boxes 3, a first motor 4 is turned on, a slide block 7 is driven by a screw 5 to slide laterally on a guide post 6, the position of a sampling device is adjusted, a group of sampling mechanisms is extended by a group of first electric cylinders 12, a group of sampling mechanisms is extended into a group of sample boxes 3, a third motor 15 is turned on, the sample is driven by a rack 14 to slide through a gear 16, the sample is sucked into a syringe 13, the sample is discharged to a specified position by a group of sampling mechanisms through the movement of the slide block 7, a second motor 11 is turned on, a rotating shaft 10 is driven to rotate one hundred eighty degrees, and the two groups of sampling mechanisms are transposed, then the water inlet pipe and the water outlet pipe are respectively connected with the water inlet valve and the water outlet valve of the water tank 17, the top end of the top injector 13 stretches into the rubber pipe 21 through the shrinkage of the plurality of groups of second electric cylinders 18, the electromagnetic valve 20 and the third motor 15 are opened, clean water is sucked into the injector 13, the third motor 15 runs reversely to discharge water in the injector 13 back into the water tank 17, cleaning is completed, the plurality of groups of second electric cylinders 18 stretch and reset, the vacuum pump 19 is opened to discharge air in the water tank 17, negative pressure is formed in the water tank 17, the electromagnetic valve 20 is closed, dropped clean water is reduced, the water in the water tank 17 is discharged through the water outlet pipe, clean water is discharged into the water tank 17 through the water inlet pipe, and sampling work is performed through another group of sampling mechanisms.

The main functions realized by the utility model are as follows: the sampling mechanism is replaced by the two groups of sampling mechanisms, and when one group of sampling mechanisms samples, the other group of sampling mechanisms is cleaned.

The first motor 4, the second motor 11, the first electric cylinder 12, the third motor 15, the second electric cylinder 18, the vacuum pump 19 and the electromagnetic valve 20 of the sampling structure of the liquid chromatograph of the present utility model are purchased on the market, and the person skilled in the art only needs to install and operate according to the attached instruction manual without the need of creative labor of the person skilled in the art.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. A sampling structure of liquid chromatograph comprises a driving device; the device is characterized by also comprising a sampling device and a cleaning device, wherein the sampling device is arranged on the driving device, and the cleaning device is arranged on the sampling device;

the driving device adjusts the position of the sampling device, and the cleaning device cleans the inside of the sampling device.

2. The sampling structure of a liquid chromatograph according to claim 1, wherein the driving device comprises a box body (1), a plurality of groups of sample boxes (3), a first motor (4), a screw rod (5), a guide post (6) and a sliding block (7), wherein the front end of the box body (1) is provided with a box door (2), the plurality of groups of sample boxes (3) are all arranged in the box body (1), the first motor (4) is arranged at the side end of the box body (1), two ends of the screw rod (5) are all rotatably arranged on the inner wall of the box body (1), one end of the screw rod (5) is connected with an output shaft of the first motor (4), two ends of the guide post (6) are fixedly arranged on the inner wall of the box body (1), the screw rod (5) and the guide post (6) are all penetrated through the sliding block (7), and the surface of the screw rod (5) is in threaded connection with the middle part in the sliding block (7).

3. The sampling structure of a liquid chromatograph according to claim 2, wherein the sampling device comprises two sets of brackets (8), two sets of side plates (9), a rotating shaft (10), a second motor (11), two sets of first electric cylinders (12) and two sets of sampling mechanisms, wherein the top ends of the two sets of brackets (8) are connected with the bottom ends of the sliding blocks (7), the two sets of side plates (9) are respectively arranged on the two sets of brackets (8), the rotating shaft (10) is rotatably arranged at the bottoms of the two sets of side plates (9), the second motor (11) is arranged on one set of side plates (9), the output shaft of the second motor (11) is connected with the side ends of the rotating shaft (10), one ends of the two sets of first electric cylinders (12) are respectively connected with the top ends and the bottom ends of the rotating shaft (10), and the two sets of sampling mechanisms are respectively arranged at the other ends of the two sets of first electric cylinders (12).

4. A sampling structure of a liquid chromatograph according to claim 3, characterized in that the sampling mechanism comprises a syringe (13), a rack (14), a third motor (15) and a gear (16), wherein the syringe (13) is mounted on the other end of the first electric cylinder (12) through a support plate, one end of the rack (14) is connected with a piston in the first electric cylinder (12), the third motor (15) is fixedly mounted on the support plate, the side end of the gear (16) is connected with an output shaft of the third motor (15), and the front end of the gear (16) is in meshed connection with the rear end of the rack (14).

5. A sampling structure of a liquid chromatograph according to claim 3, characterized in that the cleaning device comprises a water tank (17), a second electric cylinder (18), a vacuum pump (19), an electromagnetic valve (20) and a rubber tube (21), wherein the bottom end of the water tank (17) is installed at the top ends of the two sets of side plates (9) through a plurality of sets of second electric cylinders (18), the left end and the right end of the water tank (17) are respectively provided with a water inlet valve and a water outlet valve, the bottom end of the vacuum pump (19) is connected with the top end of the water tank (17), the air suction port of the vacuum pump (19) is communicated with the inside of the water tank (17), and the top end of the rubber tube (21) is connected with the bottom end of the water tank (17) through the electromagnetic valve (20).