CN220552822U

CN220552822U - Gas chromatograph with sample injection and antifouling functions

Info

Publication number: CN220552822U
Application number: CN202322152215.2U
Authority: CN
Inventors: 武瑞杰; 刘丽亚; 许瑞清; 孙晋鹏; 赵子青; 郭文蓉; 崔小芳; 甘雨鑫
Original assignee: Shanxi Jinshuo Biomedical Technology Co ltd
Current assignee: Shanxi Jinshuo Biomedical Technology Co ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-03-01
Anticipated expiration: 2033-08-10

Abstract

The utility model provides a gas chromatograph with a sample injection and antifouling function. The left side of the upper end of the chromatograph is provided with a sample inlet; the chromatograph upper end is located the right side of sample inlet and is provided with four sets of sampling components, and sampling component upper end sets up antifouling lid. According to the utility model, the clamping assembly is arranged, when the sample injector is required to be disassembled and replaced or cleaned, the second lifting handle can be pulled, the second lifting handle drives the sliding rod to slide on two sides of the clamping plate, the arc clamps compress the spring at the moment, the cleaned sample injector is placed in the middle of the arc clamps, then the second lifting handle is loosened, the spring provides a reverse acting force for the arc clamps, and the sample injector is clamped by matching with the sliding rod, so that the sample injector is convenient to replace and maintain, and the device is more convenient to use.

Description

Gas chromatograph with sample injection and antifouling functions

Technical Field

The utility model belongs to the technical field of biological analysis experiments, and particularly relates to a gas chromatograph with a sample injection antifouling function.

Background

A gas chromatograph is a chromatographic analysis apparatus using a gas as a mobile phase, and is widely used in fields such as environmental monitoring, and is required to extract a substance to be detected in a sample into a solvent.

The utility model discloses a gas chromatograph cylinder autosampler at the publicity symbol CN209992449U, concretely relates to gas chromatograph measurement field, the on-line screen storage device comprises a base, screw fixed mounting has the rotating electrical machines through base upper end one side, the output shaft of rotating electrical machines is connected with the rotation axis through the speed reducer, the slip is provided with first slider on the rotation axis, the fixed connecting block that is provided with in one side of first slider, the fixed syringe seat that is provided with in one side of connecting block, the upper end of first slider is provided with the second slider, the fixed injection clamp plate that is provided with in one side of second slider, the fixed mount pad that is provided with in top of rotation axis, the bottom one side fixed mounting of mount pad has first hydraulic stem, the bottom opposite side fixed mounting of mount pad has the second hydraulic stem. The utility model not only can realize automatic sample injection of the gas chromatograph, but also can automatically sample, is simple and convenient to operate and has high measurement accuracy, but the storage box of the device has no protective structure, so that dust in air and external impurities are easy to enter into a solvent to be detected to influence the subsequent detection result, in addition, the device is inconvenient to detach and replace the injection syringe, and in the long-term use process, if the injection syringe is not cleaned and maintained in time, the sample is polluted, and the accuracy of the detection result is influenced. Therefore, it is necessary to provide a new gas chromatograph with sample injection and anti-fouling functions to solve the above technical problems.

Disclosure of Invention

The utility model solves the technical problem of providing a gas chromatograph with a sample injection and antifouling function.

In order to solve the technical problems, the gas chromatograph with sample injection and antifouling functions provided by the utility model comprises: the left side of the upper end of the chromatograph is provided with a sample inlet; the upper end of the chromatograph is positioned on the right side of the sample inlet and provided with four groups of sampling components, and the upper end of the sampling component is provided with an anti-fouling cover; the chromatograph comprises a bottom plate, wherein the upper end of the chromatograph is provided with the bottom plate, the right end of the bottom plate is provided with a connecting plate, the left side of the upper end of the bottom plate is provided with a first motor, the output end of the first motor is connected with a ball screw sleeve through a ball screw, the upper end of the ball screw sleeve is connected with a supporting plate through a connecting column, the upper side of the front end of the supporting plate is provided with a second motor, and the lower end of the second motor is provided with a clamping assembly; the electric push rod, the clamping assembly lower extreme is connected with the fixed plate through electric push rod, and the fixed plate lower extreme is inserted and is equipped with the injector.

As a further scheme of the utility model, the sampling assembly comprises sampling bottles, annular grooves and incisions, four groups of sampling bottles are arranged on the right side of the sample inlet at the upper end of the chromatograph, the annular grooves are formed in the upper ends of the sampling bottles, and the incisions are formed in the left side and the right side of the upper ends of the annular grooves.

As a further scheme of the utility model, the anti-fouling cover comprises a first handle, a cover plate and a first connecting block, wherein the cover plate is inserted into the upper end of the sampling bottle, the first handle is arranged at the upper end of the cover plate, the first connecting blocks matched with the notch are arranged at the left end and the right end of the cover plate, and the first connecting blocks are movably inserted into the notch.

As a further scheme of the utility model, the ball screw sleeve is movably sleeved on the outer surface of the ball screw, the lower end of the ball screw sleeve is provided with a sliding block, the upper end of the bottom plate is provided with a sliding groove matched with the sliding block, and the right end of the ball screw is in rotary connection with the right end of the connecting plate.

As a further scheme of the utility model, the clamping assembly comprises a rotating shaft, a clamping plate, sliding rods, springs, arc clamps and a second handle, wherein the output end of the second motor is provided with the rotating shaft, the lower end of the rotating shaft penetrates through the supporting plate to be connected with the clamping plate, four symmetrical sliding rods are respectively and movably inserted into the left side and the right side of the lower end of the clamping plate, the springs are sleeved at the ends, close to each other, of the sliding rods, the arc clamps are fixedly arranged at the ends, close to each other, of the sliding rods, one ends, far from the arc clamps, of the springs are fixedly connected with the clamping plate, and one ends, far from the clamping plate, of the springs are fixedly connected with the arc clamps.

As a further scheme of the utility model, the sample injector comprises a disc, a push rod, a needle cylinder, a piston, a second connecting block and a needle head, wherein the disc is movably connected inside the fixed plate, and the fixed plate is provided with a notch matched with the disc.

As a further scheme of the utility model, the lower end of the disc is fixedly provided with a push rod, the lower end of the push rod is movably sleeved with a needle cylinder, the inner wall of the needle cylinder is movably inserted with a piston, and the piston and the inner wall of the needle cylinder are mutually attached.

As a further scheme of the utility model, the left end and the right end of the lower end of the needle cylinder are provided with second connecting blocks, the second connecting blocks correspond to the notches, the distance between the farthest two points of the second connecting blocks is not larger than the diameter of the excircle of the annular slot, and the lower end of the needle cylinder is fixedly provided with a needle head.

Compared with the related art, the gas chromatograph with the sample injection antifouling function has the following beneficial effects:

1. according to the utility model, the anti-fouling cover is arranged, before the solvent in the sampling bottle is detected, the first connecting block can be aligned to the notch, the cover plate is arranged at the opening of the sampling bottle, so that air and external sundries are prevented from entering the sampling bottle, the subsequent detection result is influenced, and the practicability of the device is improved.

2. According to the utility model, the clamping assembly is arranged, when the sample injector is required to be disassembled and replaced or cleaned, the second lifting handle can be pulled, the second lifting handle drives the sliding rod to slide on two sides of the clamping plate, the arc clamps compress the spring at the moment, the cleaned sample injector is placed in the middle of the arc clamps, then the second lifting handle is loosened, the spring provides a reverse acting force for the arc clamps, and the sample injector is clamped by matching with the sliding rod, so that the sample injector is convenient to replace and maintain, and the device is more convenient to use.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a gas chromatograph with sample injection and antifouling functions;

FIG. 2 is a schematic diagram showing a cross-sectional structure of a sample injection assembly of a gas chromatograph with sample injection antifouling function according to the present utility model;

FIG. 3 is a schematic view of an anti-fouling cover structure of a gas chromatograph with sample injection and anti-fouling functions;

fig. 4 is a schematic structural diagram of a holding assembly of a gas chromatograph with sample injection and antifouling functions.

Fig. 5 is a schematic diagram of a fixing plate structure of a gas chromatograph with sample injection and antifouling functions.

Fig. 6 is a schematic diagram of a cross-sectional structure of a sample injector of a gas chromatograph with sample injection antifouling function according to the present utility model.

In the figure: 1. a chromatograph; 2. a sample inlet; 3. a sampling assembly; 31. sampling bottle; 32. annular grooving; 33. a notch; 4. an anti-fouling cover; 41. a first handle; 42. a cover plate; 43. a first connection block; 5. a bottom plate; 6. a connecting plate; 7. a first motor; 8. a ball screw; 9. a ball screw sleeve; 10. a connecting column; 11. a support plate; 12. a second motor; 13. a clamping assembly; 131. a rotating shaft; 132. a clamping plate; 133. a slide bar; 134. a spring; 135. an arc clamp; 136. a second handle; 14. an electric push rod; 15. a fixing plate; 16. a sample injector; 161. a disc; 162. a push rod; 163. a needle cylinder; 164. a piston; 165. a second connection block; 166. a needle.

Detailed Description

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination. A gas chromatograph with sample injection and anti-fouling functions, comprising: the chromatograph 1, there is a sample inlet 2 in the left side of upper end of chromatograph 1; the sampling assembly 3, the chromatograph 1 upper end is located the right side of the sample inlet 2 and is provided with four groups of sampling assemblies 3, and the upper end of the sampling assembly 3 is provided with the antifouling cover 4; the chromatograph 1 comprises a bottom plate 5, wherein the bottom plate 5 is arranged at the upper end of the chromatograph 1, a connecting plate 6 is arranged at the right end of the bottom plate 5, a first motor 7 is arranged at the left side of the upper end of the bottom plate 5, the output end of the first motor 7 is connected with a ball screw sleeve 9 through a ball screw 8, the upper end of the ball screw sleeve 9 is connected with a supporting plate 11 through a connecting column 10, a second motor 12 is arranged at the upper side of the front end of the supporting plate 11, and a clamping assembly 13 is arranged at the lower end of the second motor 12; the electric push rod 14, the clamping assembly 13 lower extreme is connected with fixed plate 15 through electric push rod 14, and the fixed plate 15 lower extreme is inserted and is equipped with injector 16.

The sampling assembly 3 comprises a sampling bottle 31, an annular slot 32 and a notch 33, four groups of sampling bottles 31 are arranged on the right side of the sample inlet 2 at the upper end of the chromatograph 1, the annular slot 32 is arranged at the upper end of the sampling bottle 31, the notches 33 are arranged on the left side and the right side of the upper end of the annular slot 32, and four different types of solvents can be placed in the four groups of sampling bottles 31, so that sampling and measuring of different solvents are facilitated.

The antifouling cover 4 comprises a first handle 41, a cover plate 42 and a first connecting block 43, the cover plate 42 is inserted at the upper end of the sampling bottle 31, the first handle 41 is arranged at the upper end of the cover plate 42, the first connecting blocks 43 matched with the notch 33 are arranged at the left end and the right end of the cover plate 42, the first connecting blocks 43 are movably inserted into the notch 33, the first connecting blocks 43 are aligned with the notch 33, the cover plate 42 is covered at the upper end of the sampling bottle 31, and the influence of external sundries on the subsequent detection result caused by entering the solvent to be detected can be prevented.

The ball screw sleeve 9 is movably sleeved on the outer surface of the ball screw 8, a sliding block is arranged at the lower end of the ball screw sleeve 9, a sliding groove matched with the sliding block is formed in the upper end of the bottom plate 5, the right end of the ball screw 8 and the right end of the connecting plate 6 form rotary connection, and the ball screw 8 can drive the ball screw sleeve 9 to move left and right under the drive of the first motor 7, so that the sampler 16 is convenient for sampling different solvents.

The clamping assembly 13 comprises a rotating shaft 131, a clamping plate 132, a sliding rod 133, a spring 134, an arc clamp 135 and a second lifting handle 136, wherein the rotating shaft 131 is arranged at the output end of the second motor 12, the lower end of the rotating shaft 131 penetrates through the supporting plate 11 to be connected with the clamping plate 132, four symmetrical sliding rods 133 are movably inserted into the left side and the right side of the lower end of the clamping plate 132 respectively, the ends, close to each other, of the sliding rods 133 are sleeved with the spring 134, the ends, close to each other, of the sliding rods 133 are fixedly provided with the arc clamp 135, one ends, far from the arc clamp 135, of the spring 134 are fixedly connected with the clamping plate 132, one ends, far from the clamping plate 132, of the spring 134 are fixedly connected with the arc clamp 135, the cleaned and maintained sample injector 16 is placed in the middle of the arc clamp 135, the second lifting handle 136 is pulled, the arc clamp 135 drives the sliding rods 133 to move and compress the spring 134, and then the second lifting handle 136 is released, and the arc clamp 135 clamps 16 under the elastic force of the spring 134 to clamp the sample injector 16, so that the sample injector 16 is conveniently replaced.

The injector 16 comprises a disc 161, a push rod 162, a needle cylinder 163, a piston 164, a second connecting block 165 and a needle 166, wherein the disc 161 is movably connected inside the fixing plate 15, the fixing plate 15 is provided with a notch matched with the disc 161, and the disc 161 can be conveniently and movably lapped on the upper end of the fixing plate 15 through the notch arranged on the fixing plate 15.

The push rod 162 is fixedly arranged at the lower end of the disc 161, the needle cylinder 163 is movably sleeved at the lower end of the push rod 162, the piston 164 is movably inserted into the inner wall of the needle cylinder 163, the piston 164 is mutually attached to the inner wall of the needle cylinder 163, and the electric push rod 14 pulls the push rod 162 to enable the piston 164 to slide on the inner wall of the needle cylinder 163, so that the pressure intensity in the needle cylinder 163 is changed.

The left end and the right end of the lower end of the needle cylinder 163 are provided with second connecting blocks 165, the second connecting blocks 165 correspond to the notches 33, the distance between the two farthest points of the second connecting blocks 165 is not larger than the diameter of the outer circle of the annular groove 32, the lower end of the needle cylinder 163 is fixedly provided with a needle head 166, and the needle head 166 can extract the solvent in the sampling bottle 31.

The gas chromatograph with the sample injection and pollution prevention functions provided by the utility model has the following working principle:

a first step; placing the cleaned and maintained sample injector 16 in the middle of the arc clamp 135, enabling the sample injector 16 to be lapped at the upper end of the notch formed in the fixing plate 15, pulling the second handle 136, enabling the arc clamp 135 to drive the sliding rod 133 to move and compress the spring 134, placing the cleaned and maintained sample injector 16 in the middle of the arc clamp 135, then loosening the second handle 136, and clamping the sample injector 16 by the arc clamp 135 under the action of the elastic force of the spring 134.

A second step; firstly, determining a solvent to be detected, then lifting the cover plate 42 by lifting the first lifting handle 41, starting the first motor 7, driving the ball screw 8 to rotate by the first motor 7, driving the ball screw 9 to move, driving the ball screw 9 to drive the injector 16 to reach the upper end of the sampling bottle 31 for storing the solvent to be detected, starting the electric push rod 14, aligning the second connecting block 165 with the notch 33, when the needle 166 enters the sampling bottle 31, and when the second connecting block 165 completely enters the annular slot 32, starting the second motor 12 to drive the rotating shaft 131 to rotate, driving the clamping plate 132 to rotate, driving the injector 16 clamped by the arc clamp 135 to rotate until the second connecting block 165 and the notch 33 are staggered, stopping the second motor 12 at the moment, then starting the electric push rod 14 to retract, driving the disc 161 to move upwards by the electric push rod 14 in cooperation with the fixed plate 15, driving the push rod 162 to drive the piston 164 to move upwards in the needle cylinder 163, extracting the solvent in the sampling bottle 31 by 166, then starting the first motor 7, moving the injector 16 to the upper end of the needle 163 to align the needle 163 with the needle 2, and starting the needle 163 to detect the solvent in the needle 2.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents, and in other related technical fields, which are equally encompassed by the scope of the present utility model.

Claims

1. A gas chromatograph with sample injection and anti-fouling functions, comprising:

the device comprises a chromatograph (1), wherein a sample inlet (2) is arranged on the left side of the upper end of the chromatograph (1);

the sampling assembly (3), the right side that the chromatograph (1) upper end is located the sample inlet (2) is provided with four groups of sampling assemblies (3), and the upper end of sampling assembly (3) sets up antifouling lid (4);

the chromatograph comprises a bottom plate (5), wherein the bottom plate (5) is arranged at the upper end of the chromatograph (1), a connecting plate (6) is arranged at the right end of the bottom plate (5), a first motor (7) is arranged at the left side of the upper end of the bottom plate (5), the output end of the first motor (7) is connected with a ball screw sleeve (9) through a ball screw (8), the upper end of the ball screw sleeve (9) is connected with a supporting plate (11) through a connecting column (10), a second motor (12) is arranged at the upper side of the front end of the supporting plate (11), and a clamping assembly (13) is arranged at the lower end of the second motor (12);

the electric push rod (14), clamping assembly (13) lower extreme is connected with fixed plate (15) through electric push rod (14), and is equipped with injector (16) in fixed plate (15) lower extreme plug.

2. The gas chromatograph with sample injection and fouling prevention functions according to claim 1, wherein: the sampling assembly (3) comprises a sampling bottle (31), annular grooves (32) and notches (33), four groups of sampling bottles (31) are arranged on the right side of the sample inlet (2) at the upper end of the chromatograph (1), the annular grooves (32) are formed in the upper end of the sampling bottle (31), and the notches (33) are formed in the left side and the right side of the upper end of the annular grooves (32).

3. The gas chromatograph with sample injection and fouling prevention functions according to claim 2, wherein: the anti-fouling cover (4) comprises a first handle (41), a cover plate (42) and a first connecting block (43), the cover plate (42) is inserted at the upper end of the sampling bottle (31), the first handle (41) is arranged at the upper end of the cover plate (42), the first connecting blocks (43) matched with the notch (33) are arranged at the left end and the right end of the cover plate (42), and the first connecting blocks (43) are movably inserted into the notch (33).

4. The gas chromatograph with sample injection and fouling prevention functions according to claim 1, wherein: the ball screw sleeve (9) is movably sleeved on the outer surface of the ball screw (8), a sliding block is arranged at the lower end of the ball screw sleeve (9), a sliding groove matched with the sliding block is formed in the upper end of the bottom plate (5), and the right end of the ball screw (8) is rotationally connected with the right end of the connecting plate (6).

5. The gas chromatograph with sample injection and fouling prevention functions according to claim 4, wherein: clamping component (13) are including pivot (131), grip block (132), slide bar (133), spring (134), arc clamp (135) and second handle (136), second motor (12) output is provided with pivot (131), and pivot (131) lower extreme passes backup pad (11) and is connected with grip block (132), and grip block (132) lower extreme left and right sides is the activity respectively inserts four slide bars (133) of symmetry, and the one end cover that slide bar (133) are close to each other is equipped with spring (134), the one end that slide bar (133) are close to each other is fixed to be provided with arc clamp (135), one end and grip block (132) fixed connection that arc clamp (135) were kept away from to spring (134), one end and arc clamp (135) fixed connection that grip block (132) were kept away from to spring (134).

6. The gas chromatograph with sample injection and fouling prevention functions according to claim 4, wherein: the sampler (16) comprises a disc (161), a push rod (162), a needle cylinder (163), a piston (164), a second connecting block (165) and a needle head (166), wherein the disc (161) is movably connected inside the fixing plate (15), and the fixing plate (15) is provided with a notch matched with the disc (161).

7. The gas chromatograph with sample injection and fouling prevention functions according to claim 6, wherein: the lower end of the disc (161) is fixedly provided with a push rod (162), the lower end of the push rod (162) is movably sleeved with a needle cylinder (163), the inner wall of the needle cylinder (163) is movably inserted with a piston (164), and the piston (164) and the inner wall of the needle cylinder (163) are mutually attached.

8. The gas chromatograph with sample injection and fouling prevention functions according to claim 6, wherein: the needle cylinder is characterized in that second connecting blocks (165) are arranged at the left end and the right end of the lower end of the needle cylinder (163), the second connecting blocks (165) correspond to the notches (33), the distance between the farthest two points of the second connecting blocks (165) is not larger than the diameter of the outer circle of the annular groove (32), and a needle head (166) is fixedly arranged at the lower end of the needle cylinder (163).