CN220650578U - Sample injection device of liquid chromatograph - Google Patents

Abstract

The utility model discloses a sample injection device of a liquid chromatograph, which comprises a bottom plate, wherein the upper end surface of the bottom plate is fixedly connected with a supporting frame, the right side of the supporting frame is provided with a sample injection mechanism, the sample injection mechanism comprises two electric sliding rails which are fixedly connected with the right end surface of the supporting frame and are symmetrical front and back, a sliding block is dynamically connected in each electric sliding rail, the sliding block is fixedly connected with a power shaft, a first through hole is arranged in the power shaft, a sliding block is slidably connected in the first through hole, springs are fixedly connected between the right end surfaces of the two sliding blocks and the power shaft, an injector is arranged between the sliding blocks, the injector is rotationally connected with the sliding block through a rotating shaft, the front end surface of the front sliding block is fixedly connected with a motor, the motor is dynamically connected with the injector through the rotating shaft, and the injector is fixedly connected with an injection needle.

Description

Sample injection device of liquid chromatograph

Technical Field

The utility model relates to the field of chromatograph, in particular to a sample injection device of a liquid chromatograph.

Background

When the liquid chromatograph is used for sampling, sampling and sampling of samples are required, independent sampling is carried out through a plurality of rotatable samples, accurate sampling is realized through an electric sliding rail which moves up and down, and finally, the electric push rod is used for realizing the propulsion of the samples, and the samples enter the chromatograph for detection, so that the automation of sampling can be realized, and the efficiency of the chromatograph is improved;

to this end, the patent with publication number CN208568697U discloses an automatic sample injection device for high performance liquid chromatograph, which comprises a base, a fixing seat and a suction mechanism, wherein the fixing seat is arranged on the base, the suction mechanism is connected with the fixing seat through a sampling support frame, and the base is provided with a sample carrying table at a position corresponding to the suction mechanism. The automatic sample injection device drives the mounting vertical plate to move up and down in the sliding guide rail through the driving screw, so as to drive the injection assembly to move up and down, and the automatic sample injection device and the sample bottle are accurately positioned through the sample carrying table arranged at the corresponding position of the suction mechanism. The automatic sample injection device provided by the utility model is convenient for controlling the reciprocating motion of the injection assembly, and realizes the controllability of sample injection;

the automatic sample injection device for the high performance liquid chromatograph in the case does not solve the problems that the chromatograph is low in efficiency and is difficult to realize automation.

Disclosure of Invention

The utility model aims to provide a sample injection device of a liquid chromatograph, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sampling device of liquid chromatograph, includes the bottom plate, bottom plate up end fixedly connected with support frame, the support frame right side is equipped with sampling mechanism, sampling mechanism include fixedly connected with in two electronic slide rails of support frame right-hand member face and fore-and-aft symmetry, every all power connection has the sliding block in the electronic slide rail, sliding block fixedly connected with power shaft, be equipped with first through-hole in the power shaft, sliding connection has the slider in the first through-hole, two slider right-hand member face with all fixedly connected with spring between the power shaft, be equipped with the syringe between the slider, the syringe with the slider passes through the axis of rotation and rotates to be connected, the front side terminal surface fixedly connected with motor before the slider, motor pass through the axis of rotation with syringe power connection, syringe fixedly connected with syringe needle, the syringe can pass through syringe needle sample extraction.

The utility model has the advantages that the fixed plate is fixedly connected between the two power shafts, the right end surface of the fixed plate is fixedly connected with the electric push rod, the electric push rod is in power connection with the power rod, the power rod is positioned at the left side of the injector, the upper end surface of the bottom plate is fixedly connected with the fixed block, the bottom plate up end rotates and is connected with the rolling disc, rolling disc up end fixedly connected with a plurality of test-tube racks, every the test-tube rack can all put into a sample tube, and is different the sample is equipped with different samples in the sample tube.

The support frame is not connected with the upper end face of the rotating disc, a second through hole is formed in the support frame, a driving motor is fixedly connected with the lower end face of the second through hole, a power shaft is connected with the driving motor in a power mode, and the power shaft is fixedly connected with the rotating disc.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the sample injection mechanism is arranged, the injector can be driven to move up and down through the motor, the injector and the electric sliding rail, and the injector can be driven to rotate and then push to the right side, so that automatic sample injection of samples can be realized, automation is realized, the efficiency is improved, and the rotating disc can be driven to rotate through the driving motor, different sample tubes are driven to rotate to the position right below the injection needle, and the samples are selected.

Drawings

FIG. 1 is a three-dimensional schematic of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view in section A-A of FIG. 2;

FIG. 4 is a right side view of FIG. 1;

FIG. 5 is an enlarged partial schematic view of FIG. 3;

FIG. 6 is a schematic view of a portion of a rotating disk according to the present utility model in three dimensions;

FIG. 7 is a three-dimensional schematic diagram of a sample injection mechanism according to the present utility model.

In the figure: 100. a bottom plate; 101. a support frame; 102. a fixed block; 103. a rotating disc; 104. a test tube rack; 105. a sample tube; 106. an electric slide rail; 107. an electric push rod; 108. a syringe; 109. a motor; 110. a fixing plate; 111. a power lever; 112. an injection needle; 113. a spring; 114. a first through hole; 115. a driving motor; 116. a power shaft; 117. a sliding block; 118. a slide block; 119. a second through hole; 120. and a sample feeding mechanism.

Detailed Description

The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1:

referring to fig. 1-7, the present utility model provides a technical solution: the utility model provides a sampling device of liquid chromatograph, includes bottom plate 100, bottom plate 100 up end fixedly connected with support frame 101, support frame 101 right side is equipped with sampling mechanism 120, sampling mechanism 120 include fixed connection in support frame 101 right-hand member face and front and back symmetry's two electronic slide rail 106, every all power connection has slider 117 in the electronic slide rail 106, slider 117 fixedly connected with power shaft 116, be equipped with first through-hole 114 in the power shaft 116, sliding connection has slider 118 in the first through-hole 114, two all fixedly connected with spring 113 between slider 118 right-hand member face and the power shaft 116, be equipped with syringe 108 between the slider 118, syringe 108 with slider 118 passes through the axis of rotation and is connected, the front side slider 118 front end fixedly connected with motor 109, motor 109 pass through the axis of rotation with syringe 108 power connection, syringe 108 fixedly connected with syringe needle 112, syringe 108 can pass through syringe 112 extraction sample.

A fixed plate 110 is fixedly connected between the two power shafts 116, an electric push rod 107 is fixedly connected to the right end face of the fixed plate 110, a power rod 111 is dynamically connected to the electric push rod 107, the power rod 111 is positioned on the left side of the injector 108, a fixed block 102 is fixedly connected to the upper end face of the bottom plate 100, a rotating disc 103 is rotatably connected to the upper end face of the bottom plate 100, a plurality of test tube racks 104 are fixedly connected to the upper end face of the rotating disc 103, each test tube rack 104 can be placed into one sample tube 105, and different samples are placed in different sample tubes 105;

the support frame 101 with the rotor 103 up end is not connected, be equipped with the second through-hole 119 in the support frame 101, the terminal surface fixedly connected with driving motor 115 under the second through-hole 119, driving motor 115 power is connected with power shaft 116, power shaft 116 with rotor 103 fixed connection.

Working principle:

firstly, a driving motor 115 is started, so that a power shaft 116 is driven to rotate, the power shaft 116 drives a rotating disc 103 to rotate, the rotating disc 103 drives each test tube rack 104 to rotate, a sample tube 105 to be sampled is selected to rotate to be right below an injection needle 112, then an electric sliding rail 106 is started, a sliding block 117 is driven to move downwards, the sliding block 117 drives the power shaft 116 to move downwards, the power shaft 116 drives an injector 108 to move downwards, the injection needle 112 is driven to move into the sample tube 105, the injector 108 extracts samples, and after the samples are extracted, the electric sliding rail 106 drives the injector 108 to move upwards to an original position.

Then the motor 109 drives the injector 108 to rotate, so that the injection needle 112 horizontally faces to the right, at the moment, the power rod 111 is coaxially aligned with the injector 108, then the electric push rod 107 is started, the power rod 111 is driven to move to the right, so that the injector 108 is pushed to move to the right, the slide block 118 is driven to interact to the right by the right movement of the injector 108, the spring 113 is compressed, the injection needle 112 is driven to move into the chromatograph to detect when the injector 108 moves to the right, after detection, the electric push rod 107 drives the power rod 111 to move to the left, the spring 113 drives the injector 108 to move to the left to the original position, and finally the motor 109 drives the injector 108 to rotate back to the original position, and sample injection is finished.

It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed system. It is intended that the specification and examples be considered as exemplary only, with a true scope being indicated by the following claims and their equivalents.

Claims (6)

1. The utility model provides a sampling device of liquid chromatograph, includes bottom plate (100), bottom plate (100) up end fixedly connected with support frame (101), its characterized in that: the utility model provides a sample injection mechanism, including support frame (101) right side is equipped with sampling mechanism (120), sampling mechanism (120) including fixed connection in support frame (101) right-hand member face and front and back symmetry two electronic slide rail (106), every all power connection has sliding block (117) in electronic slide rail (106), sliding block (117) fixedly connected with power shaft (116), be equipped with first through-hole (114) in power shaft (116), sliding connection has slider (118) in first through-hole (114), two slider (118) right-hand member face with all fixedly connected with spring (113) between power shaft (116), be equipped with syringe (108) between slider (118), syringe (108) with slider (118) are through axis of rotation connection, and the front side terminal surface fixedly connected with motor (109) before slider (118), motor (109) pass through axis of rotation with syringe (108) power connection, syringe (108) fixedly connected with syringe needle (112), syringe (108) can pass through syringe (112) sample extraction.

2. The sample injection device of a liquid chromatograph according to claim 1, wherein: a fixed plate (110) is fixedly connected between the two power shafts (116), an electric push rod (107) is fixedly connected to the right end face of the fixed plate (110), a power rod (111) is connected to the electric push rod (107) in a power mode, and the power rod (111) is located on the left side of the injector (108).

3. The sample injection device of a liquid chromatograph according to claim 2, wherein: the test tube rack comprises a base plate (100), wherein a fixed block (102) is fixedly connected to the upper end face of the base plate (100), a rotating disc (103) is rotatably connected to the upper end face of the base plate (100), and a plurality of test tube racks (104) are fixedly connected to the upper end face of the rotating disc (103).

4. A sample injection device for a liquid chromatograph according to claim 3, wherein: each test tube rack (104) can be placed into one sample tube (105), and different samples are contained in different sample tubes (105).

5. The sample injection apparatus of claim 4, wherein: the support frame (101) is not connected with the upper end face of the rotating disc (103), a second through hole (119) is formed in the support frame (101), and a driving motor (115) is fixedly connected to the lower end face of the second through hole (119).

6. The sample injection device of a liquid chromatograph of claim 5, wherein: the driving motor (115) is in power connection with a power shaft (116), and the power shaft (116) is fixedly connected with the rotating disc (103).