CN108554468A - A kind of mechanical structure of autopipette - Google Patents

Abstract

The invention discloses a mechanical structure of an automatic sampler, which comprises a fixture, a fixed shaft, a connecting rod, a sampler, a piston, a gear box, a rack, a lifting rod, a lifting connection block and an electric cylinder. There is a fixed shaft, one side of the fixed shaft is provided with a connecting rod, one end of the connecting rod is connected with a sampler, the outer side of the sampler is provided with an outer wall of the sampler, and a photoresistor is arranged inside the outer wall of the sampler , the inside of the sample injector is provided with a piston, and a lifting rod is provided above the piston, and the upper part of the lifting rod is connected to the rack through a lifting connection block. The present invention is simple in structure, novel in design, and high in precision. The liquid volume can be accurately measured, avoiding errors caused by the manual operation of the experimenter, and improving the rigor of the experiment.

Description

A mechanical structure of an automatic sampler

technical field

The invention relates to an experimental operation device, in particular to a mechanical structure of an automatic sampler.

Background technique

In the course of experiments, especially biochemical experiments, pipettes are often used to measure and transfer small or tiny amounts of liquid. The pipettes that have appeared now include air cushion samplers, piston moving samplers, multi-channel samplers, electronic samplers and distributors, etc. However, in the process of manual operation, due to the uneven pressure applied by the thumb and the poor control of the pressing speed, the viscosity of the liquid is different, resulting in inaccurate volume of the absorbed liquid, resulting in experimental errors. To this end, we propose a mechanical structure of an autosampler.

Contents of the invention

The main purpose of the present invention is to provide a mechanical structure of an automatic sampler, which can effectively solve the problems in the background technology.

In order to achieve the above object, the technical scheme that the present invention takes is:

A mechanical structure of an automatic sampler, including a fixture, a fixed shaft, a connecting rod, a sampler, a piston, a gear box, a rack, a lifting rod, a lifting connection block and an electric cylinder, and a fixed shaft is arranged above the fixture, One side of the fixed shaft is provided with a connecting rod, one end of the connecting rod is connected with a sampler, the outer side of the sampler is provided with an outer wall of the sampler, the outer wall of the sampler is provided with a photoresistor, and the outer wall of the sampler is provided with a photoresistor. A piston is arranged inside the sample, and a lifting rod is arranged above the piston, and the upper part of the lifting rod is connected to the rack through a lifting connection block. A light source is arranged inside the piston, and a gear box is arranged outside the rack. One side of the gearbox is connected with an electric cylinder.

Further, a connecting pipe is arranged under the sample injector, and a suction head is connected under the connecting pipe.

Further, a balance bar is arranged inside the fixed shaft.

Further, the electric cylinder is electrically connected to the photoresistor through wires.

Further, the clamp is specifically made of stainless steel.

Compared with the prior art, the present invention has the following beneficial effects: the mechanical structure of the automatic sampler:

1. The manufacturing process is simple, detachable, novel in design, and high-precision sampler, which assists in the operation process of measuring and transferring liquid. The principle of feedback control can accurately measure the volume of liquid, avoid the error caused by the human operation of the experimenter, and improve the rigor of the experiment.

2. Put the suction head, medicine and the container to be added in the designated position, input the volume of the liquid to be added on the computer, under the control of the computer program, the fixture clamps the sampler to the designated position, descends, and installs the suction head; Then as the fixture moves to the position of the medicine, it goes down, the electric cylinder works, and starts to suck the liquid; when the liquid level reaches the sensor sensing position, the signal feedback makes the electric cylinder stop working, and the liquid level remains; the fixture moves to the designated container, and the electric cylinder It works in reverse and blows out the liquid; the series of actions of the sampler returning to the initial position with the fixture to absorb and blow out the liquid, through sensor feedback control, can accurately measure the volume of the liquid, increasing the rigor of the experimental operation.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the mechanical structure of the automatic sampler of the present invention.

In the figure: 1. fixture; 2. fixed shaft; 3. balance bar; 4. connecting rod; 5. sampler; 6. outer wall of sampler; 7. photoresistor; 8. light source; 9. piston; 10. Gear box; 11. Rack; 12. Lifting rod; 13. Lifting connection block; 14. Electric cylinder; 15. Connecting pipe; 16. Suction head.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figure 1, a mechanical structure of an automatic sampler includes a fixture 1, a fixed shaft 2, a connecting rod 4, a sampler 5, a piston 9, a gear box 10, a rack 11, a lifting rod 12, a lifting connection A block 13 and an electric cylinder 14, a fixed shaft 2 is arranged above the fixture 1, a connecting rod 4 is arranged on one side of the fixed shaft 2, and a sampler 5 is connected to one end of the connecting rod 4, and the sampler 5 The outside is provided with a sampler outer wall 6, the inside of the sampler outer wall 6 is provided with a photoresistor 7, the inside of the sampler 5 is provided with a piston 9, and an elevating rod 12 is arranged above the piston 9, and the elevating rod 12 is connected to the rack 11 through a lifting connection block 13, the piston 9 is provided with a light source 8, the rack 11 is provided with a gear box 10, and an electric cylinder 14 is connected to one side of the gear box 10.

Wherein, a connecting pipe 15 is arranged under the sample injector 5 , and a suction head 16 is connected under the connecting pipe 15 .

Wherein, a balance bar 3 is arranged inside the fixed shaft 2 .

Wherein, the electric cylinder 14 is electrically connected to the photoresistor 7 through wires.

Wherein, the clamp 1 is specifically made of stainless steel.

It should be noted that the present invention is a mechanical structure of an automatic sampler. When working, the suction head 16, the drug and the container to be added are placed at the designated position, and the volume of the liquid to be added is input on the computer. Under the control of the clamp 1, the clamp 1 clamps the sampler 5 to the designated position, descends, and installs the suction head 16; then as the clamp 1 moves to the position of the medicine, it descends, the electric cylinder 14 works, and starts to suck the liquid; when the liquid level reaches the sensor When the position is sensed, the signal feedback makes the electric cylinder 14 stop working, and the liquid level is maintained; the fixture 1 moves to the designated container, and the electric cylinder 14 works in reverse to blow out the liquid; the sampler 5 returns to the initial position with the fixture 1 to absorb and blow out the liquid The series of actions, controlled by sensor feedback, can accurately measure the volume of liquid, which increases the rigor of the experimental operation.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. a kind of mechanical structure of autopipette, including fixture (1), fixing axle (2), connecting rod (4), sample injector (5), piston (9), gear-box (10), rack (11), elevating lever (12), lifting link block (13) and electric cylinder (14), it is characterised in that：Institute It states and is provided with fixing axle (2) above fixture (1), fixing axle (2) side is provided with connecting rod (4), the connecting rod (4) one End is connected with sample injector (5), and sample injector outer wall (6) is provided on the outside of the sample injector (5), and the sample injector outer wall (6) is internal It is provided with photo resistance (7), the sample injector (5) is internally provided with piston (9), elevating lever is provided with above the piston (9) (12), it is connect with rack (11) above the elevating lever (12) by lifting link block (13), the piston (9) is internally provided with Light source (8), rack (11) outside are provided with gear-box (10), and gear-box (10) side is connected with electric cylinder (14)。

2. a kind of mechanical structure of autopipette according to claim 1, it is characterised in that：Under the sample injector (5) Side is provided with connecting tube (15), and suction nozzle (16) is connected with below the connecting tube (15).

3. a kind of mechanical structure of autopipette according to claim 1, it is characterised in that：In the fixing axle (2) Portion is provided with balancing pole (3).

4. a kind of mechanical structure of autopipette according to claim 1, it is characterised in that：The electric cylinder (14) It is electrically connected by electric wire between photo resistance (7).

5. a kind of mechanical structure of autopipette according to claim 1, it is characterised in that：The fixture (1) is specific It is made of stainless steel.