Precise intelligent pipettor

Abstract

The invention provides a precise intelligent pipettor, relates to the technical field of experimental detection auxiliary devices, and aims to solve the problems that an existing pipettor adopts a manual pressing mode to extract liquid, the precision of the manual pressing mode for extracting the liquid is low, and the liquid is squeezed out without touching a pressing head. A liquid transfer gun body is detachably connected into the protective shell, the liquid transfer gun body is of a hollow shell structure, a liquid storage box is fixedly connected into the liquid transfer gun body, a containing groove is formed in the position, corresponding to the liquid storage box, of the protective shell, and an operation panel is installed in the containing groove through a bolt; a PLC control panel is fixedly connected to the back surface of the operation panel, a micro pump is fixedly connected to the bottom of the liquid storage box, the PLC control panel is connected with the micro pump through an electric wire, a connecting pipe is fixedly connected to the tail end of the pipette body, and an extraction pipe is detachably connected to the tail end of the connecting pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental detection auxiliary devices, and in particular to a precise intelligent pipette. Background Art

[0002] In biopharmaceutical experiments, experiments often involve transferring liquid drugs. In the process of transferring the drug solution, some simpler pipetting devices such as rubber-tipped droppers are often used. In more advanced scientific experiments, some special liquid quantitative pipettes are also used. In the process of aspirating the drug solution, the principle of air pressure difference is used to press the drug into the pipette tip.

[0003] Existing pipettes use manual pressing to extract liquids. The manual pressing method has low precision and there is a problem of squeezing out the liquid by not touching the pressing head. Therefore, it is particularly important to design a precise intelligent pipette to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the manual pressing method of extracting liquid by the pipette has low precision and there is a problem that the pressing head is not touched to squeeze out the liquid, and a precise intelligent pipette is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a precision intelligent pipette, comprising a protective shell, a pipette body detachably connected to the protective shell, the pipette body being a hollow shell structure, a liquid storage box fixedly connected to the pipette body, a receiving groove being provided on the protective shell at a position corresponding to the liquid storage box, an operation panel being installed in the receiving groove by bolts, a PLC control board being fixedly connected to the back of the operation panel, a micro pump being fixedly connected to the bottom of the liquid storage box, the PLC control board and the micro pump being connected by electric wires, a connecting tube being fixedly connected to the end of the pipette body, and an extraction tube being detachably connected to the end of the connecting tube.

[0006] Preferably, the micro pump is connected to the liquid storage box via a delivery tube, and the micro pump is connected to the connecting tube via a pipeline.

[0007] Preferably, the PLC control panel has built-in instructions for extracting liquid and adding liquid.

[0008] Preferably, the operation panel is provided with a liquid volume adjustment button and a start button, and a display screen is installed on the operation panel on the left side of the buttons.

[0009] Preferably, an electromagnet is fixedly connected to the outer wall of the pipette body, a power supply is installed on the inner wall of the pipette body, the power supply and the electromagnet are connected by a cable, and the electromagnet is movably connected to the extraction tube.

[0010] Preferably, an iron sheet is embedded in the extraction tube, and a magnetic limiter is formed between the iron sheet and the electromagnet.

[0011] Preferably, a control switch is also installed on the power supply, and the control switch is arranged through the pipette.

[0012] Preferably, the cross-sectional surface of the extraction tube is a conical structure.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the present invention, during use, the original press-type liquid extraction method of the pipette is improved to a method in which a PLC control board drives a micro pump to cooperate with relevant pipeline components to extract liquid, thereby avoiding the situation in which the liquid extraction accuracy is poor due to non-touching. The PLC control board is equipped with liquid extraction instructions and liquid dripping instructions. In actual work, the staff operates the liquid volume adjustment button and the start button on the panel to control the liquid extraction work, thereby realizing the semi-automatic collection of liquid extraction work. Compared with the conventional press collection method, the present invention drives the micro pump to cooperate with relevant pipeline components by the PLC control board to complete the liquid extraction box dripping work. The overall structure is compact and easy for the staff to install and maintain, thereby solving the problem that the pipette uses a manual pressing method to extract liquid, and the manual pressing method of extracting liquid has low accuracy and there is a problem of liquid being squeezed out by non-touching the pressing head.

[0014] 2. In the present invention, during use, by operating the control switch, the driving power supply starts to work, the power supply supplies power to the position of the electromagnet, the electromagnet is energized to generate magnetism, and the extraction tube is adsorbed and limited on the connecting tube. Since the extraction tube is embedded with an iron sheet, the electromagnet is energized to adsorb and limit the extraction tube at the position of the connecting tube. The extraction tube is embedded with an iron sheet, and the iron sheet and the electromagnet in the energized state are adsorbed on each other to complete the limiting and fixing work of the extraction tube at the end of the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall diagram of the precision intelligent pipette of the present invention; Figure 2 It is a front view of the precision intelligent pipette of the present invention; Figure 3 for Figure 2 Cross-sectional view in the AA direction; Figure 4 It is a schematic diagram of the local structure of the extraction tube in the precision intelligent pipette of the present invention; Figure 5 This is a schematic diagram of the explosion state of the precision intelligent pipette of the present invention; Figure 6 It is a schematic diagram of the partial internal structure of the precision intelligent pipette of the present invention.

[0016] Legend: 1. Protective shell; 101. Receiving slot; 102. Operation panel; 103. PLC control board; 104. Bolt; 2. Pipette body; 201. Liquid storage box; 202. Micro pump; 203. Wire; 204. Delivery tube; 205. Pipeline; 3. Connecting tube; 4. Extraction tube; 401. Iron sheet; 5. Liquid volume adjustment button; 501. Start button; 502. Display screen; 6. Electromagnet; 601. Power supply; 602. Cable; 603. Control switch. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] The present invention provides a precision intelligent pipette, comprising a protective shell 1, a pipette gun body 2 is detachably connected to the protective shell 1, the pipette gun body 2 is a hollow shell structure, a liquid storage box 201 is fixedly connected to the pipette gun body 2, a receiving groove 101 is arranged on the protective shell 1 at a position corresponding to the liquid storage box 201, an operation panel 102 is installed in the receiving groove 101 through a bolt 104, the operation panel 102 is provided with a liquid volume adjustment button 5 and a start button 501, a display screen 502 is installed on the operation panel 102 at the left side of the button, a PLC control board 103 is fixedly connected to the back of the operation panel 102, and the PLC control board 103 has built-in instructions for extracting liquid and dripping liquid The bottom of the liquid storage box 201 is fixedly connected with a micro pump 202, and the PLC control board 103 is connected to the micro pump 202 through an electric wire 203, which is convenient for delivering the instructions of the PLC control board 103 to the position of the micro pump 202, and the end of the pipette gun body 2 is fixedly connected with a connecting tube 3, and the end of the connecting tube 3 is detachably connected with an extraction tube 4, and the cross-section of the extraction tube 4 is a conical structure, which is convenient for extracting or dripping liquids in different areas, and the micro pump 202 is connected to the liquid storage box 201 through a delivery tube 204, and the micro pump 202 is connected to the connecting tube 3 through a pipeline 205, and the pipeline 205 cooperates to extract the liquid at the position of the connecting tube 3.

[0020] When the precision intelligent pipette is actually used, the staff manually installs the extraction tube 4 at the position of the connecting tube 3. The outer wall of the connecting tube 3 is installed with an electromagnet 6. At this time, the staff operates the control switch 603 to drive the power supply 601 to start working. The power supply 601 supplies power to the position of the electromagnet 6. The electromagnet 6 is energized to generate magnetism, and the extraction tube 4 is adsorbed and limited on the connecting tube 3. Since the extraction tube 4 is embedded with an iron sheet 401, the electromagnet 6 is energized to adsorb and limit the extraction tube 4 at the position of the connecting tube 3. Then the staff operates the liquid volume adjustment key to input the amount of liquid to be absorbed into the PLC control board 103. On the display 502, the start button 501 is pressed, and the amount of liquid extracted is intuitively displayed on the display screen 502. After receiving the instruction to extract liquid, the PLC control board 103 cooperates with the wire 203 to transmit it to the position of the micro pump 202. After receiving the instruction to extract liquid, the micro pump 202 cooperates with the pipeline 205 and the connecting pipe 3 to extract the liquid according to the instruction of the extraction amount issued by the PLC control board 103, and then the liquid is placed in the liquid storage box 201 through the delivery pipe 204. After the liquid extraction is completed, the micro pump 202 stops working. When it is necessary to drip the liquid in the liquid storage box 201, the staff manually presses the start button 501, and the drive The liquid dripping instruction on the PLC control board 103 is activated. After receiving the liquid dripping instruction, the micro pump 202 cooperates with the delivery pipe 204 to extract the liquid in the liquid storage box 201, and then the pipeline 205 and the connecting pipe 3 are finally pumped out by the extraction pipe 4. The above liquid extraction and dripping work is completed. At this time, the staff operates the control switch 603 to control the power supply 601 to cut off the power. At this time, the electromagnet 6 has no magnetism, and the extraction pipe 4 is separated from the position of the connecting pipe 3. The original press-type liquid extraction method of the pipette gun is improved to the PLC control board 103 driving the micro pump 202 to cooperate with the relevant pipeline 205 The method of using the components to extract liquid avoids the situation where the extraction accuracy of liquid is poor due to non-touch. The PLC control board 103 is equipped with liquid extraction instructions and liquid dripping instructions. In actual work, the staff operates the liquid volume adjustment button 5 and the start button 501 on the operation panel 102 to control the liquid extraction work, thereby realizing the semi-automatic collection of liquid extraction work. Compared with the conventional pressing collection method, the present invention uses the PLC control board 103 to drive the micro pump 202 to cooperate with the relevant pipeline 205 components to complete the liquid extraction box dripping work. The overall structure is compact and easy for the staff to install and maintain.

[0021] like Figure 1-6As shown, an electromagnet 6 is fixedly connected to the outer wall of the pipette gun body 2, a power supply 601 is installed on the inner wall of the pipette gun body 2, the power supply 601 and the electromagnet 6 are connected by a cable 602, the electromagnet 6 is movably connected to the extraction tube 4, an iron sheet 401 is embedded in the extraction tube 4, and a magnetic limit is provided between the iron sheet 401 and the electromagnet 6, and a control switch 603 is also installed on the power supply 601, and the control switch 603 is arranged through the pipette gun, which is convenient for the staff to operate and control in the later stage; The effect achieved by the entire embodiment 1 is that, during use, by operating the control switch 603, the driving power supply 601 starts working, the power supply 601 supplies power to the position of the electromagnet 6, the electromagnet 6 is energized to generate magnetism, and the extraction tube 4 is adsorbed and limited on the connecting tube 3. Since the extraction tube 4 is embedded with an iron sheet 401, the electromagnet 6 adsorbs and limits the extraction tube 4 to the position of the connecting tube 3 after being energized. The extraction tube 4 is embedded with an iron sheet 401, and the iron sheet 401 and the electromagnet 6 in the energized state are mutually adsorbed, completing the limiting and fixing work of the extraction tube 4 at the end of the connecting tube 3.

[0022] Working principle: The staff manually installs the extraction tube at the connection tube position. An electromagnet is installed on the outer wall of the connection tube. At this time, the staff operates the control switch to drive the power supply to start working. The power supply supplies power to the electromagnet position. The electromagnet is energized to generate magnetism, and the extraction tube is adsorbed and limited on the connection tube. Since there is an iron sheet embedded in the extraction tube, the electromagnet is energized to adsorb and limit the extraction tube at the connection tube position. Then the staff operates the liquid volume adjustment key to input the amount of liquid to be absorbed into the PLC control panel and press the start button. At the same time, the amount of extracted liquid is intuitively displayed on the display screen. After receiving the instruction to extract liquid, the PLC control panel transmits it to the micro pump position with the help of wires. The micro pump receives the instruction and sends it to the micro pump position. After the instruction to extract the liquid is received, the pipeline and connecting pipe are coordinated to extract the liquid according to the extraction amount instruction issued by the PLC control board, and then the liquid is placed in the liquid storage box through the delivery pipe. After the liquid extraction is completed, the micro pump stops working. When the liquid in the liquid storage box needs to be added, the staff manually presses the start button, and the liquid addition instruction on the PLC control board is driven. After receiving the liquid addition instruction, the micro pump cooperates with the delivery pipe to extract the liquid in the liquid storage box, and then the pipeline and connecting pipe, and finally it is pumped out by the extraction pipe pump. The above completes the extraction and dripping of the liquid. At this time, the staff operates the control switch to control the power to cut off. At this time, the electromagnet is not magnetic, and the extraction pipe is detached from the connecting pipe position.

Claims

1. A precision intelligent pipette, comprising a protective shell (1), wherein a pipette gun body (2) is detachably connected to the protective shell (1), characterized in that: The pipette body (2) is a hollow shell structure, a liquid storage box (201) is fixedly connected to the pipette body (2), a receiving groove (101) is provided on the protective shell (1) at a position corresponding to the liquid storage box (201), an operation panel (102) is installed in the receiving groove (101) via bolts (104), a PLC control board (103) is fixedly connected to the back of the operation panel (102), a micro pump (202) is fixedly connected to the bottom of the liquid storage box (201), the PLC control board (103) and the micro pump (202) are connected via an electric wire (203), a connecting tube (3) is fixedly connected to the end of the pipette body (2), and an extraction tube (4) is detachably connected to the end of the connecting tube (3).

2. The precision intelligent pipette according to claim 1, characterized in that: The micro pump (202) is connected to the liquid storage box (201) via a delivery tube (204), and the micro pump (202) is connected to the connecting tube (3) via a pipeline (205).

3. The precision intelligent pipette according to claim 1, characterized in that: The PLC control panel (103) has built-in instructions for extracting liquid and for adding liquid.

4. The precision intelligent pipette according to claim 1, characterized in that: The operation panel (102) is provided with a liquid volume adjustment button (5) and a start button (501), and a display screen (502) is installed on the left side of the button on the operation panel (102).

5. The precision intelligent pipette according to claim 1, characterized in that: An electromagnet (6) is fixedly connected to the outer wall of the pipette body (2), a power source (601) is installed on the inner wall of the pipette body (2), the power source (601) and the electromagnet (6) are connected via a cable (602), and the electromagnet (6) is movably connected to the extraction tube (4).

6. The precision intelligent pipette according to claim 5, characterized in that: An iron sheet (401) is embedded in the extraction tube (4), and magnetic attraction and limiting are performed between the iron sheet (401) and the electromagnet (6).

7. The precision intelligent pipette according to claim 5, characterized in that: A control switch (603) is also installed on the power supply (601), and the control switch (603) is arranged through the pipette.

8. The precision intelligent pipette according to claim 1, characterized in that: The cross-sectional surface of the extraction tube (4) is a conical structure.

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