CN215179956U - Liquid chromatograph sampling device - Google Patents

Abstract

The utility model relates to a liquid chromatograph technical field, concretely relates to liquid chromatograph sampling device, comprises an operation bench, the top surface fixedly connected with L shape supporting panel of operation panel, L shape supporting panel's top surface fixedly connected with drive box, the inside fixedly connected with motor of drive box, the output of motor runs through L shape supporting panel and fixedly connected with threaded rod, the outside of threaded rod is provided with sampling mechanism, sampling mechanism includes the piece of accepting of closing with the threaded rod soon and being connected, the one end embedding that accepts the piece and deviate from the threaded rod is fixed with a storage section of thick bamboo, the inside sliding connection of a storage section of thick bamboo has the piston. The utility model discloses in, the output area through electric telescopic handle takes the connecting rod rebound on the storage cylinder, makes the connecting rod take the piston at the inside rebound of storage cylinder, realizes that the sampling tube is automatic to inhale the storage cylinder the inside with the raw materials of sample bottle the inside, has saved a large amount of manual operations, has improved the work efficiency who advances the kind.

Description

Liquid chromatograph sampling device

Technical Field

The utility model relates to a liquid chromatograph technical field, concretely relates to liquid chromatograph sampling device.

Background

The liquid chromatograph is divided into liquid-liquid chromatograph and liquid-color fixing spectrum according to whether the stationary phase is liquid or solid, the modern liquid chromatograph is composed of a high-pressure infusion pump, a sample introduction system, a temperature control system, a chromatographic column, a detector, a signal recording system and the like, compared with a classical liquid column chromatograph device, the liquid chromatograph has the characteristics of high efficiency, rapidness, sensitivity and the like, the existing sample introduction device for the liquid chromatograph basically adopts manual sampling and sample introduction, the sample capacity can not be accurately controlled, errors are easy to cause, the automation degree of part of the sample introduction device is low, time and labor are wasted, the general automatic sample evolution device is also complicated in structure and higher in cost, sometimes because the heights of different sample bottles for containing samples are different, the heights of sampling tubes on most of the sample introduction device can not be flexibly adjusted, the sampling of the sample introduction device is influenced, and an operation console on part of the sample introduction device is not provided with a clamping and fixing mechanism, the influence is intake because the sample bottle aversion is rocked in the sampling process, and the sample tube is after taking the raw materials of sample bottle the inside in addition, and the part remains on the raw materials of sample tube lateral wall can drip sample bottle or operation panel along the sample tube on, influences that operational environment is clean and tidy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, the utility model aims to provide a sample introduction device of a liquid chromatograph, which drives a connecting rod on a storage cylinder to move upwards through an output end of an electric telescopic rod, so that the connecting rod drives a piston to move upwards in the storage cylinder, a sampling tube automatically sucks raw materials in a sample bottle into the storage cylinder, and then the output end of the electric telescopic rod drives the connecting rod to move downwards, so that the raw materials are put into a detector, a large amount of manual operation is saved, the working efficiency of sample introduction is improved, a motor drives a threaded rod to rotate to drive a bearing block to drive a whole sample introduction mechanism to adjust the height up and down, the sampling tube is conveniently inserted into sample bottles with different heights to carry out sampling, the bottom surface of the sampling tube is made into an inclined plane, a circular sponge cushion is conveniently inserted through a third round hole, and the diameter of the third round hole on the circular sponge cushion is smaller than that of the section of the sampling tube, thereby make circular foam-rubber cushion can adsorb the raw materials on the sampling tube lateral wall with the in-process of sampling tube separation, prevent that the raw materials from dripping on the operation panel, guaranteed the clean and tidy of appearance in-process operational environment, through at the dog with correspond the position and press from both sides fixedly connected with top between the tight piece and stretch the spring, the elasticity effect that stretches the spring at the top makes two clamp tight pieces be close to each other, the arc foam-rubber cushion on pressing from both sides tight piece is convenient for fix not unidimensional sample bottle on the operation panel, the smooth of having guaranteed to advance kind work is gone on.

The purpose of the utility model can be realized by the following technical scheme:

a sample introduction device of a liquid chromatograph comprises an operating table, wherein an L-shaped supporting panel is fixedly connected to the top surface of the operating table, a guide rod is fixedly connected between the inner top surface of the L-shaped supporting panel and the top surface of the operating table, a driving box body is fixedly connected to the top surface of the L-shaped supporting panel, a motor is fixedly connected to the inside of the driving box body, the output end of the motor penetrates through the L-shaped supporting panel and is fixedly connected with a threaded rod, a sample introduction mechanism is arranged on the outer side of the threaded rod and comprises a bearing block which is screwed with the threaded rod, a storage cylinder is fixedly embedded into one end of the bearing block, which is far away from the threaded rod, a piston is slidably connected to the inside of the storage cylinder, a connecting rod is fixedly connected to the top surface of the piston, a connecting block is fixedly connected to the top surface of the connecting rod, and an electric telescopic rod for driving the connecting rod to move up and down is arranged between the bottom surface of the connecting block and the top surface of the bearing block, the utility model discloses a storage cylinder, including operation panel, operating table top surface, the both ends of axostylus axostyle, stopper, electric telescopic handle, connecting rod, piston, storage cylinder, rethread electric telescopic handle, the operation panel top surface is located the below of storage cylinder and is provided with stop gear, stop gear includes two symmetric distribution's axostylus axostyle, two sliding connection has two symmetric distribution's the tight piece of clamp between the middle part of axostylus axostyle, the top surface fixedly connected with elastic cord of the tight piece of clamp, the equal fixedly connected with dog in both ends of axostylus axostyle, be provided with the top between dog and the tight piece of corresponding position clamp and stretch the spring, take the connecting rod rebound on the storage cylinder through electric telescopic handle's output, make the connecting rod take the piston to move up inside the storage cylinder, realize that the sampling tube is automatic to inhale the raw materials of sample bottle the inside, rethread electric telescopic handle's output takes the connecting rod to move down, realize throwing in the raw materials puts in the detector, has saved a large amount of manual operation, has improved the work efficiency of appearance.

Further, the method comprises the following steps: a first round hole and a threaded hole are formed in one end of the bearing block, the inner side wall of the first round hole is in sliding connection with the outer side wall of the guide rod, the inner side wall of the threaded hole is in screwed connection with the outer side wall of the threaded rod, and therefore the bearing block is driven to stably move up and down the sample feeding mechanism.

Further, the method comprises the following steps: the bottom surface of the storage cylinder is communicated with a sampling tube, the bottom surface of the sampling tube is an inclined surface, and the bottom surface of the sampling tube is an inclined surface, so that the sampling tube can be conveniently and quickly inserted into the circular sponge cushion.

Further, the method comprises the following steps: the embedding of the opening end at storage cylinder top is fixed with the cushion, round hole two has been seted up to the top surface of cushion, the inside wall of round hole two slides with the lateral wall of connecting rod and pastes and lean on to make the connecting rod at the steady reciprocating of storage cylinder the inside.

Further, the method comprises the following steps: the electric telescopic rod is fixedly connected with the bottom surface of the bearing block, and the output end of the electric telescopic rod is fixedly connected with the bottom surface of the connecting block, so that the electric telescopic rod drives the connecting rod to move up and down through the connecting block.

Further, the method comprises the following steps: the axostylus axostyle runs through the top of corresponding position and stretches the spring, the one end of top stretch the spring with correspond the inboard fixed connection of position dog, the other end of top stretch the spring with correspond the outside fixed connection that the position pressed from both sides tight piece, through at the dog with correspond the position press from both sides between the tight piece fixedly connected with top stretch the spring, make two press from both sides tight piece and be close to each other under the spring action that the spring was stretched on the top, press from both sides the arc foam-rubber cushion on the tight piece and be convenient for fix not unidimensional sample bottle on the operation panel, guaranteed going on smoothly of advancing kind work.

Further, the method comprises the following steps: the bottom surface of the clamping block is fixedly connected with a T-shaped sliding block, the top surface of the operating platform is provided with a T-shaped sliding groove, and the outer side wall of the T-shaped sliding block is in sliding connection with the inner side wall of the T-shaped sliding groove, so that the clamping block can move on the operating platform stably.

Further, the method comprises the following steps: two circular foam-rubber cushion of fixedly connected with between the elastic cord, just round hole three has been seted up at the middle part of circular foam-rubber cushion, and the diameter of round hole three is less than the diameter of sampling tube cross-section circle, and the diameter of round hole three on the circular foam-rubber cushion is less than the diameter of sampling tube cross-section circle to make circular foam-rubber cushion can adsorb the raw materials on the sampling tube lateral wall at the in-process with the sampling tube separation, prevent that the raw materials from dripping to the operation panel on, guaranteed the clean and tidy of advance kind in-process operational environment.

The utility model has the advantages that:

1. the output end of the electric telescopic rod drives the connecting rod on the storage cylinder to move upwards, so that the connecting rod drives the piston to move upwards in the storage cylinder, the sampling tube automatically sucks the raw materials in the sample bottle into the storage cylinder, and the output end of the electric telescopic rod drives the connecting rod to move downwards, so that the raw materials are put into the detector, a large amount of manual operation is omitted, and the working efficiency of sample introduction is improved;

2. the threaded rod is driven by the motor to rotate so that the bearing block drives the whole sampling mechanism to adjust the height up and down, the sampling tube can be conveniently inserted into sample bottles with different heights for sampling, the bottom surface of the sampling tube is made into an inclined plane, the sampling tube can be conveniently inserted into the circular sponge cushion through the third round hole, and the diameter of the third round hole on the circular sponge cushion is smaller than that of the cross section circle of the sampling tube, so that the circular sponge cushion can adsorb raw materials on the outer side wall of the sampling tube in the process of separating from the sampling tube, the raw materials are prevented from dropping on the operating table, and the cleanness and tidiness of the working environment in the sampling process are ensured;

3. through the top extension spring fixedly connected between the stop block and the corresponding position clamping block, the two clamping blocks are close to each other under the elastic action of the top extension spring, the arc-shaped sponge pad on the clamping blocks is convenient for fixing sample bottles with different sizes on the operating table, and the smooth proceeding of sample feeding work is ensured.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a middle position-limiting mechanism of the present invention;

FIG. 3 is an exploded view of the operation table and the clamping block of the present invention;

FIG. 4 is a schematic view of the structure of the sample feeding mechanism of the present invention;

fig. 5 is a schematic view of the structure of the storage cylinder and the connecting rod of the present invention.

In the figure: 100. an operation table; 110. an L-shaped support panel; 120. a guide bar; 130. a T-shaped chute; 200. a driving box body; 210. a threaded rod; 300. a sample introduction mechanism; 310. a bearing block; 320. a storage cylinder; 321. a piston; 322. a sampling tube; 323. cushion blocks; 330. a connecting rod; 340. connecting blocks; 350. an electric telescopic rod; 400. a limiting mechanism; 410. a shaft lever; 420. a clamping block; 421. an arc-shaped sponge cushion; 430. elastic bands; 431. a circular sponge cushion; 440. a stopper; 450. and (4) a top extension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, a sample introduction device for a liquid chromatograph includes an operation table 100, an L-shaped supporting panel 110 is fixedly connected to a top surface of the operation table 100, a guide rod 120 is fixedly connected between an inner top surface of the L-shaped supporting panel 110 and a top surface of the operation table 100, a driving box 200 is fixedly connected to the top surface of the L-shaped supporting panel 110, a motor is fixedly connected to an inner portion of the driving box 200, an output end of the motor penetrates through the L-shaped supporting panel 110 and is fixedly connected with a threaded rod 210, a sample introduction mechanism 300 is disposed on an outer side of the threaded rod 210, the sample introduction mechanism 300 includes a receiving block 310 rotatably connected with the threaded rod 210, a storage cylinder 320 is fixedly embedded into one end of the receiving block 310, which is far away from the threaded rod 210, a piston 321 is slidably connected to the inner portion of the storage cylinder 320, a connecting rod 330 is fixedly connected to a top surface of the piston 321, a connecting block 340 is fixedly connected to the top surface of the connecting rod 330, and an electric connection block 340 is disposed between a bottom surface of the connecting block 340 and a top surface of the receiving block 310 for driving the connecting rod 330 to move up and down The telescopic rod 350 is moved, a limiting mechanism 400 is arranged on the top surface of the operating platform 100 below the storage cylinder 320, the limiting mechanism 400 comprises two symmetrically distributed shaft rods 410, two symmetrically distributed clamping blocks 420 are slidably connected between the middle parts of the two shaft rods 410, elastic bands 430 are fixedly connected to the top surfaces of the clamping blocks 420, two ends of each shaft rod 410 are fixedly connected with a stop block 440, a top extension spring 450 is arranged between each stop block 440 and the corresponding clamping block 420, the output end of the electric telescopic rod 350 drives the connecting rod 330 on the storage cylinder 320 to move upwards, so that the connecting rod 330 drives the piston 321 to move upwards in the storage cylinder 320, the sampling tube 322 automatically sucks raw materials in a sample bottle into the storage cylinder 320, and the output end of the electric telescopic rod 350 drives the connecting rod 330 to move downwards, so that the raw materials are put into the detector, a large amount of manual operation is omitted, and the sampling work efficiency is improved.

One end of the bearing block 310 is provided with a first round hole and a threaded hole, the inner side wall of the first round hole is in sliding connection with the outer side wall of the guide rod 120, and the inner side wall of the threaded hole is in screwing connection with the outer side wall of the threaded rod 210, so that the bearing block 310 drives the sample feeding mechanism 300 to move up and down stably; the bottom surface of the storage cylinder 320 is communicated with a sampling tube 322, the bottom surface of the sampling tube 322 is an inclined surface, and the bottom surface of the sampling tube 322 is an inclined surface, so that the sampling tube 322 can be conveniently and quickly inserted into the circular sponge cushion 431; a cushion block 323 is fixedly embedded into the open end of the top of the storage cylinder 320, a second round hole is formed in the top surface of the cushion block 323, and the inner side wall of the second round hole is in sliding contact with the outer side wall of the connecting rod 330, so that the connecting rod 330 can stably move up and down in the storage cylinder 320.

The bottom surface of the electric telescopic rod 350 is fixedly connected with the top surface of the bearing block 310, and the output end of the electric telescopic rod 350 is fixedly connected with the bottom surface of the connecting block 340, so that the electric telescopic rod 350 drives the connecting rod 330 to move up and down through the connecting block 340; the axostylus axostyle 410 runs through the top of corresponding position and stretches spring 450, the one end of top extension spring 450 with the inboard fixed connection who corresponds position dog 440, the other end that the spring 450 was stretched on the top with the outside fixed connection who corresponds the tight piece 420 of position clamp, through at dog 440 and correspond the tight piece 420 of position clamp between the spring 450 is stretched on the top, make two clamp tight piece 420 near each other under the spring action that the spring 450 was stretched on the top, the arc foam-rubber cushion 421 on the tight piece 420 of clamp is convenient for fix not unidimensional sample bottle on operation panel 100, the smooth of the work of advancing a sample is guaranteed and is gone on.

The bottom surface of the clamping block 420 is fixedly connected with a T-shaped sliding block, the top surface of the operating table 100 is provided with a T-shaped sliding chute 130, and the outer side wall of the T-shaped sliding block is in sliding connection with the inner side wall of the T-shaped sliding chute 130, so that the clamping block 420 can move on the operating table 100 stably; the circular foam-rubber cushion 431 of fixedly connected with between two elastic bands 430, and circular foam-rubber cushion 431's middle part has been seted up round hole three, and the diameter of round hole three is less than the diameter of sampling tube 322 cross-section circle, the diameter of round hole three is less than the diameter of sampling tube 322 cross-section circle on the circular foam-rubber cushion 431, thereby make circular foam-rubber cushion 431 can adsorb the raw materials on the sampling tube 322 lateral wall at the in-process that separates with sampling tube 322, prevent that the raw materials from dripping on operation panel 100, guaranteed clean advance kind in-process operational environment.

The working principle is as follows: when the sample bottle clamping device is used, the two clamping blocks 420 are moved towards the direction deviating from each other by hands, a sample bottle containing raw materials is placed between the two arc-shaped sponge cushions 421, after the hands are loosened, the two clamping blocks 420 are close to each other under the elastic force of the jacking spring 450 to fix the sample bottle, the circular sponge cushion 431 on the clamping blocks 420 is covered at the bottle mouth of the sample bottle, the motor drives the threaded rod 210 to rotate to drive the bearing block 310 to move downwards with the whole sample feeding mechanism 300, so that the sampling tube 322 is inserted into the sample bottle through the circular sponge cushion 431, then the electric telescopic rod 350 is started, the electric telescopic rod 350 drives the connecting rod 330 in the storage cylinder 320 to move upwards by driving the connecting block 340 to move upwards, so that the sampling tube 322 sucks the raw materials in the sample bottle into the storage cylinder 320, and drives the whole sample feeding mechanism 300 to move upwards to be separated from the sample bottle by the rotation of the threaded rod 210 again, in the process of sampling tube 322 and sample bottle separation, the remaining raw materials of sampling tube 322 lateral wall are adsorbed by circular foam-rubber cushion 431 and fall on preventing that the raw materials from dripping 100 on the operation panel, have guaranteed to advance the clean and tidy of kind in-process operational environment, and electric telescopic handle 350's output moves down and discharges the raw materials of storage cylinder 320 the inside to the detector through sampling tube 322 at last.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims (8)

1. The utility model provides a liquid chromatograph sampling device, includes operation panel (100), its characterized in that, the top surface fixedly connected with L shape supporting panel (110) of operation panel (100), fixedly connected with guide bar (120) between the interior top surface of L shape supporting panel (110) and the top surface of operation panel (100), the top surface fixedly connected with drive box (200) of L shape supporting panel (110), the inside fixedly connected with motor of drive box (200), the output of motor runs through L shape supporting panel (110) and fixedly connected with threaded rod (210), the outside of threaded rod (210) is provided with advances a kind mechanism (300), advance a kind mechanism (300) and include and close the piece (310) of bearing of being connected with threaded rod (210) soon, the one end embedding that bearing piece (310) deviates from threaded rod (210) is fixed with a storage cylinder (320), the inside sliding connection of a storage cylinder (320) has piston (321), the top surface of the piston (321) is fixedly connected with a connecting rod (330), the top surface of the connecting rod (330) is fixedly connected with a connecting block (340), an electric telescopic rod (350) for driving the connecting rod (330) to move up and down is arranged between the bottom surface of the connecting block (340) and the top surface of the bearing block (310), a limiting mechanism (400) is arranged on the top surface of the operating platform (100) and below the storage cylinder (320), the limiting mechanism (400) comprises two shaft rods (410) which are symmetrically distributed, two clamping blocks (420) which are symmetrically distributed are connected between the middle parts of the two shaft rods (410) in a sliding way, the top surface of the clamping block (420) is fixedly connected with an elastic band (430), both ends of the shaft lever (410) are fixedly connected with a stop block (440), and a jacking spring (450) is arranged between the stop block (440) and the clamping block (420) at the corresponding position.

2. The sample introduction device for the liquid chromatograph of claim 1, wherein one end of the receiving block (310) is provided with a first round hole and a threaded hole, an inner side wall of the first round hole is slidably connected with an outer side wall of the guide rod (120), and an inner side wall of the threaded hole is screwed with an outer side wall of the threaded rod (210).

3. The sample introduction device for liquid chromatograph of claim 1, wherein the bottom surface of the storage cylinder (320) is connected to the sampling tube (322), and the bottom surface of the sampling tube (322) is a slope.

4. The sample introduction device for the liquid chromatograph according to claim 3, wherein a cushion block (323) is embedded and fixed at an open end of the top of the storage cylinder (320), a second round hole is formed in the top surface of the cushion block (323), and an inner side wall of the second round hole is in sliding contact with an outer side wall of the connecting rod (330).

5. The sample introduction device for the liquid chromatograph according to claim 1, wherein the electric telescopic rod (350) is fixedly connected to a bottom surface of the electric telescopic rod (350) and a top surface of the receiving block (310), and an output end of the electric telescopic rod (350) is fixedly connected to a bottom surface of the connecting block (340).

6. The sample injection device for liquid chromatograph of claim 1, wherein the shaft rod (410) penetrates through a top extension spring (450) at a corresponding position, one end of the top extension spring (450) is fixedly connected with the inner side of the stop block (440) at the corresponding position, and the other end of the top extension spring (450) is fixedly connected with the outer side of the clamping block (420) at the corresponding position.

7. The sample introduction device for the liquid chromatograph according to claim 1, wherein a T-shaped slider is fixedly connected to a bottom surface of the clamping block (420), a T-shaped chute (130) is formed in a top surface of the operating table (100), and an outer side wall of the T-shaped slider is slidably connected to an inner side wall of the T-shaped chute (130).

8. The sample introduction device for the liquid chromatograph according to claim 1, wherein a circular sponge pad (431) is fixedly connected between the two elastic bands (430), a circular hole III is formed in the middle of the circular sponge pad (431), and the diameter of the circular hole III is smaller than that of the cross section circle of the sampling tube (322).

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