Miniature electric liquid separator and reagent bottle thereof

Abstract

The utility model discloses a miniature electric liquid separator and a reagent bottle thereof. The miniature electric liquid separator comprises a shell, a lower cavity, a middle cavity and an upper cavity which are sequentially formed in the shell from bottom to top, and an interaction assembly arranged at the top of the shell, a micro peristaltic pump is fixed on the inner side of the lower cavity; a storage battery and a wireless charging coil are fixed on the inner side of the middle cavity; a PCB (Printed Circuit Board) control board for receiving and transmitting a control instruction to the interaction assembly and controlling the micro peristaltic pump to accurately transfer liquid is fixed on the inner side of the upper cavity; the miniature peristaltic pump, the storage battery and the PCB control board are sequentially arranged in the lower cavity, the middle cavity and the upper cavity of the shell, so that the electric liquid separator is simple in structure, convenient to transfer liquid, high in accuracy and low in manufacturing cost, and pollution caused by misoperation is prevented. And the urgent demand of scientific research personnel on the pipetting tool can be well met.

Description

TECHNICAL FIELD

[0001] The utility model relates to laboratory equipment technical field especially relates to a micro electric liquid distributor and reagent bottle thereof. BACKGROUND

[0002] The pipette is a kind of measuring tool for moving liquid from original container to another container within a certain range.In the field of biological experiment, chemical experiment and pharmaceutical research, liquid accurate removal is the routine and key operation link, and the performance of liquid distributor as a common experimental tool directly influences the accuracy and efficiency of experiment.

[0003] The utility model discloses a pipette, including support, the support top axle core place is fixed with first fixed disc, the first fixed disc top is fixed with second fixed disc, the second fixed disc outside is fixed with a plurality of support plates, the support plate outside is provided with a plurality of liquid distributor bodies, the pipette body outside is fixed with the handle placed in support plate outside, the pipette body one side is equipped with protection assembly;Avoid the collision of pipette body when moving with outside, cause pipette body damage, improved the security of pipette body when moving.

[0004] The pipette of the above device is a traditional manual pipette, which relies on the skill and experience of the operator to complete the suction and release of liquid by manually pressing or rotating mechanical structure, and the operation precision is greatly affected by human factors, especially in long-time use or repetitive work, operation fatigue can lead to pipette deviation, which affects the reliability of experimental results.In order to solve the shortage of manual liquid distribution, electric pipette gradually appears in the market, however, the traditional electric pipette generally has problems such as large size, complex structure and high cost, which limits its popularity.In addition, the traditional electric pipette often needs complex setting and debugging during operation, which is difficult for non-professionals to operate, and is not conducive to the rapid progress of experiment. SUMMARY

[0005] The utility model overcomes the insufficient prior art, provides a kind of micro electric liquid distributor and reagent bottle thereof.

[0006] To achieve the above purpose, the utility model adopts the technical scheme as follows: a micro electric liquid distributor, comprising: a shell, a lower cavity, a middle cavity and an upper cavity are sequentially arranged in the shell from bottom to top, and an interactive component is arranged on the top of the shell.

[0007] The inner side of the lower cavity is fixed with a micro peristaltic pump; the inner side of the middle cavity is fixed with a battery and a wireless charging coil for providing wireless charging function to the battery; the inner side of the upper cavity is fixed with a PCB control panel for transmitting control instructions to the interactive assembly and controlling the micro peristaltic pump to perform precise pipetting.

[0008] The interactive assembly comprises a power switch, a display screen, a pipetting adjustment button and a pipetting key installed on the top of the shell; the power switch is used for controlling power on / off, the display screen is used for displaying the current set pipetting volume, the pipetting adjustment button is used for adjusting and setting the pipetting volume, and the pipetting key is used for controlling pipetting on / off.

[0009] In a preferred embodiment of the utility model, one end of the liquid suction pipe of the input end of the micro peristaltic pump penetrates to the bottom of the shell, one end of the liquid delivery pipe of the output end penetrates to the side of the shell, and the liquid suction pipe and the liquid delivery pipe are corrosion-resistant hoses; the battery is electrically connected with the wireless charging coil, the micro peristaltic pump, the PCB control panel and the power switch; the PCB control panel is electrically connected with the wireless charging coil, the micro peristaltic pump, the power switch, the display screen, the pipetting adjustment button and the pipetting key.

[0010] In a preferred embodiment of the utility model, the shape of the shell is one of a circle or a polygon, and the bottom is open.

[0011] In a preferred embodiment of the utility model, the inside of the middle cavity is provided with a pipeline closing assembly, which comprises a micro electric push rod fixed to the inner bottom of the middle cavity, a top block fixed to the output end of the micro electric push rod, and a snap ring fixed to the inner top of the middle cavity; the top block and the snap ring are located at the bottom and the top of the liquid delivery pipe respectively.

[0012] In a preferred embodiment of the utility model, the top block and the snap ring are located in the same plane, the top of the top block and the bottom of the snap ring are both arc-shaped, the top of the top block is in contact with the bottom of the liquid delivery pipe, and the bottom of the snap ring is overlapped with the top of the liquid delivery pipe.

[0013] In a preferred embodiment of the utility model, the electric push rod is electrically connected with the battery and the PCB control panel respectively.

[0014] In a preferred embodiment of the utility model, one end of the liquid delivery pipe located on the side of the shell is provided with a pipetting head for guiding the pipetting direction.

[0015] In a preferred embodiment of the utility model, the inside of the pipette head is inserted with one end of the infusion tube, for facilitating the replacement of the pipette head after multiple uses.

[0016] In a preferred embodiment of the utility model, the bottom inside of the shell is clamped with a polytetrafluoroethylene gasket for connecting, sealing, preventing liquid leakage and corrosion resistance.

[0017] The utility model provides a reagent bottle, including the electric dispenser that any one of preceding description is described, the bottle mouth side surface of reagent bottle is with the shell bottom of electric dispenser is connected in the screw thread.

[0018] The utility model solves the defects in the background art, and has the following beneficial effects:

[0019] (1) the utility model provides a kind of micro electric dispenser and its reagent bottle, by being sequentially arranged in the lower part cavity, middle cavity and upper cavity of shell micro peristaltic pump, battery and PCB control panel, under the cooperation of interactive component, precise pipetting operation can be realized, the electric dispenser of the utility model is not only simple structure, pipetting operation is convenient, precision is high, prevents pollution from misoperation, and with the advantage of low manufacturing cost, the urgent needs of scientific researchers for pipetting tool can be better satisfied, and not only solve the precision and operability of manual dispenser, also avoid the problems of large volume, complex structure, high cost and complex operation of traditional electric dispenser, which is not conducive to the rapid experiment.

[0020] (2) in the utility model, by being provided with pipeline closure assembly inside middle cavity, when pipetting ends, by the cooperation of PCB control panel, micro electric push rod, top block and snap ring, the top of top block can be in close contact with the bottom of infusion tube, while the bottom of snap ring is overlapped with the top of infusion tube, so as to close infusion tube, prevent liquid from continuing to flow, avoid the backflow of residual chemical substances in pipeline to outside, improve reliability and practicability in use. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is further described below in connection with drawings and embodiments;

[0022] Figure 1 it is the electric dispenser three-dimensional structure diagram of preferred embodiment of the utility model;

[0023] Figure 2 it is the whole half cut structure diagram of electric dispenser of preferred embodiment of the utility model;

[0024] Figure 3 it is the overhead structure diagram of electric dispenser of preferred embodiment of the utility model;

[0025] Figure 4The utility model discloses an electric dispenser and reagent bottle separation structure diagram of preferred embodiment of the utility model,

[0026] In the figure: 1, shell body;11, lower cavity;12, middle cavity;13, upper cavity;2, micro peristaltic pump;21, liquid suction pipe;22, infusion tube;3, battery;31, wireless charging coil;4, PCB control panel;5, power switch;51, display screen;52, pipette adjustment button;53, pipette button;6, micro electric push rod;61, top block;62, snap ring;7, pipette head;8, polytetrafluoroethylene gasket. DETAILED DESCRIPTION

[0027] The utility model will be explained further in detail in combination with the drawings and embodiments, these drawings are all simplified schematic diagram, just with the schematic way shows the basic structure of the utility model, therefore it shows only the constitution related with the utility model.

[0028] As Figure 1 , Figure 2 and Figure 3 Indicated, a kind of micro electric dispenser, comprising: shell body 1, lower cavity 11, middle cavity 12 and upper cavity 13 are successively set in the inside of shell body 1 from bottom to top, and interactive component is arranged at the top of shell body 1;The inside of lower cavity 11 is fixed with micro peristaltic pump 2;The inside of middle cavity 12 is fixed with battery 3, and wireless charging coil 31 for providing wireless charging function to battery 3;The inside of upper cavity 13 is fixed with PCB control panel 4 for receiving and sending control instruction to interactive component, and control micro peristaltic pump 2 to carry out accurate pipetting;Interactive component includes: power switch 5, display screen 51, pipette adjustment button 52 and pipette button 53 installed at the top of shell body 1;Power switch 5 is used for the control of power switch, display screen 51 is used to show current set pipetting volume, pipette adjustment button 52 is used for the adjustment setting of pipetting volume, and pipette button 53 is used for the control of pipetting switch.

[0029] It should be noted that the technical parameters of the micro peristaltic pump 2 are power supply DC 3.7V, power 1-2W, and outlet pressure ≤0.03MPa; one end of the liquid suction pipe 21 of the input end of the micro peristaltic pump 2 penetrates to the bottom of the shell 1, one end of the liquid delivery pipe 22 of the output end penetrates to the side of the shell 1, and the liquid suction pipe 21 and the liquid delivery pipe 22 are corrosion-resistant hoses with technical parameters of temperature resistance-50℃ to 135℃, acid and alkali resistance, and oxidation resistance; the battery 3 is electrically connected with the wireless charging coil 31, the micro peristaltic pump 2, the PCB control panel 4 and the power switch 5; the PCB control panel 4 is electrically connected with the wireless charging coil 31, the micro peristaltic pump 2, the power switch 5, the display screen 51, the liquid transfer adjustment button 52 and the liquid transfer button 53; the wireless charging coil 31 at least includes a transmitting coil and a receiving coil, high-frequency alternating current is passed through the transmitting coil to generate an alternating magnetic field, the receiving coil senses the magnetic field and generates alternating current, the receiving end transmits energy to the battery 3 through rectification, voltage stabilization and battery management circuit to realize charging, and the control circuit for wireless charging can be realized by simple programming of those skilled in the art, which belongs to the common knowledge in the art, and the present application file is mainly used to protect the mechanical device, so the control mode and circuit connection will not be explained in detail, and will not be described in detail here.

[0030] Specifically, each electric dispenser can be installed with a reagent bottle adapted to a kind of chemical substance, avoiding the pollution caused by the contact of liquid residue in the pipeline with other chemical substances, and accurately transferring the chemical substance in the reagent bottle, controlling the power switch 5 to start the power supply of the battery 3, the PCB control panel 4 controls the display screen 51 to display the current set liquid transfer amount, controls the display screen 51 to display the corresponding liquid transfer amount through the liquid transfer adjustment button 52, sets the required liquid transfer amount, and aligns the liquid delivery pipe 22 at the output end of the micro peristaltic pump 2 to the receiving liquid bottle, and the user controls the liquid transfer button 53, the PCB control panel 4 receives the start signal and controls the calibrated micro peristaltic pump 2 to start according to the set information, the micro peristaltic pump 2 extracts the chemical substance from the reagent bottle through the liquid suction pipe 21 at the input end, and then discharges the liquid through the liquid delivery pipe 22 at the output end, until the time set for the working liquid transfer amount is reached, and then the accurate liquid transfer operation can be realized, the electric dispenser has the advantages of simple structure, convenient and accurate liquid transfer operation, prevention of pollution caused by misoperation, low manufacturing cost, and can better meet the urgent needs of researchers for liquid transfer tools, and not only solves the problems of accuracy and operability of manual dispensers, but also avoids the problems of large size, complex structure, high cost and complex operation of traditional electric dispensers, which is not conducive to rapid experiment.

[0031] Further, the calibration of the micropump 2 is as follows: before using the micropump 2, since there is a small mechanical error between each peristaltic pump, the volume of liquid pumped by each peristaltic pump per millisecond is measured first, so that when the PCB control board 4 sets the required liquid transfer amount (i.e., the required volume), the peristaltic pump can be controlled to work for a corresponding time according to the volume of liquid pumped per millisecond, thereby achieving precise liquid transfer.

[0032] It can be understood that the control mode of the PCB control board 4 is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art, and the present application file mainly protects the mechanical device, so the control mode and circuit connection will not be explained in detail, and will not be described in detail here.

[0033] In a possible design, the PCB control board 4 further comprises a Bluetooth module, which adopts a Nordic nRF52840 low-power Bluetooth (BLE) chip as a core, integrates an ARM Cortex-M4 processor, a 2.4 GHz radio frequency transceiver, and a built-in antenna matching network, and has a packaging size of 6 mm x 6 mm QFN. Through the setting of the Bluetooth module, the user can send the liquid transfer parameters (such as the target liquid transfer amount, the flow rate mode, or the number of dispensing) to the PCB control board 4 in real time through the custom-developed APP, and receive the device state feedback (such as the remaining power, the liquid transfer progress, or the fault alarm) at the same time. After the microcontroller built in the control board analyzes the APP instructions, the motor drive signal of the micropump 2 is dynamically adjusted, and the operation information is synchronously updated through the display screen 51, which can form a closed-loop control logic of “mobile terminal setting — device end execution — data feedback verification”. Thus, the remote control function can be used to allow the user to complete the operation without directly contacting the dispenser in a sterile operation table, a biological safety cabinet, or other special environments, thereby reducing the risk of contamination; and the operation data can be automatically recorded and exported as an electronic report, which is convenient for the experimental process to be traced back.

[0034] In some embodiments, the shape of the shell 1 is one of a circle or a polygon, and the bottom is open. The open bottom of the shell 1 can facilitate the liquid suction tube 21 to penetrate to the bottom of the shell 1, so that it can contact the reagent bottle to enable the micropump 2 to extract liquid. Different shapes and sizes of openings can be selected according to different application scenarios and container types, thereby improving the versatility of the dispenser.

[0035] In some embodiments, the inner part of the middle cavity 12 is provided with a pipeline closing assembly, which comprises a micro electric push rod 6 fixed to the inner bottom of the middle cavity 12, a top block 61 fixed to the output end of the micro electric push rod 6, and a clasp ring 62 fixed to the inner top of the middle cavity 12; the top block 61 and the clasp ring 62 are located at the bottom and the top of the infusion tube 22, respectively.

[0036] It should be noted that the top block 61 and the clasp ring 62 are located in the same plane, the top of the top block 61 and the bottom of the clasp ring 62 are arc-shaped, the top of the top block 61 is in contact with the bottom of the infusion tube 22, and the bottom of the clasp ring 62 is overlapped with the top of the infusion tube 22. The electric push rod is electrically connected with the battery 3 and the PCB control panel 4 respectively; the model of the micro electric push rod 6 is LA-M-128-21.

[0037] Specifically, the feeding state of the micro electric push rod 6 when the pipetting is not started is the output end extension state, that is, the driving top block 61 extrudes the infusion tube 22 upward, so that the infusion tube 22 is deformed and adheres to the bottom of the clasp ring 62; the feeding state when the pipetting is started is the output end retraction state, that is, the driving top block 61 cancels the extrusion on the infusion tube 22 downward, so that the infusion tube 22 restores the communication state; when the pipetting is finished, the PCB control panel 4 controls the micro electric push rod 6 to work, the micro electric push rod 6 drives the top block 61 to move upward, so that the top of the top block 61 is in close contact with the bottom of the infusion tube 22, and at the same time, the bottom of the clasp ring 62 is overlapped with the top of the infusion tube 22, thereby closing the infusion tube 22, preventing the liquid from flowing outward, avoiding the backflow of the residual chemical substances in the pipeline, and improving the reliability and practicality in use.

[0038] In some embodiments, the infusion tube 22 is provided with a pipetting head 7 for guiding the pipetting direction at one end of the side surface of the shell 1. The inner side of the pipetting head 7 is inserted into one end of the infusion tube 22, which is convenient for replacing the pipetting head 7 after multiple uses.

[0039] Specifically, the pipetting head 7 is arranged at one end of the infusion tube 22 on the side surface of the shell 1, mainly plays a role in guiding the pipetting direction, so that the liquid can be accurately delivered to the target position. When the pipetting head 7 is damaged after multiple uses or needs to be replaced with a pipetting head 7 of different specifications, it can be conveniently replaced by insertion, thereby ensuring the normal use of the dispenser.

[0040] In some embodiments, a polytetrafluoroethylene gasket 8 for connecting and sealing to prevent liquid leakage and corrosion resistance is clamped on the inner side of the bottom of the shell 1.

[0041] Specifically, the polytetrafluoroethylene gasket 8 has good corrosion resistance and sealing property, and is clamped on the inner side of the bottom of the shell 1 to play a role in connecting and sealing to prevent liquid leakage. It can prevent liquid from leaking from the connection between the bottom of the shell 1 and the external container, and its corrosion resistance can ensure that it will not be damaged when contacting various chemical liquids, thereby prolonging the service life of the dispenser.

[0042] As shown in Figure 4 A reagent bottle, comprising the electric dispenser of any one of the preceding embodiments, the bottle opening side surface of the reagent bottle is threadedly connected with the bottom of the shell 1 of the electric dispenser, so that it is convenient to install and disassemble.

[0043] Need to explain, this electric dispenser as disclosed in the above examples, therefore, the reagent bottle with the electric dispenser also has all the technical effects described above, hereinafter will not be repeated.

[0044] The utility model discloses when using, first with the reagent bottle of adapting specific chemical matter and the opening of the bottom of shell 1 are connected with the thread, and the polytetrafluoroethylene gasket 8 realizes the connection seal leakproof and corrosion -resistant effect.Open power dial switch 5, and battery 3 supplies power, and PCB control panel 4 controls display screen 51 to show the current pipetting amount (initially 0 or last setting value).The required pipetting amount is set through pipetting adjustment button 52, and PCB control panel 4 receives the adjustment signal and updates display screen 51 to show.Setting is completed, and the pipetting head 7 of one end of infusion tube 22 is opposite the pipette bottle body, and pipetting button 53 is pressed, and PCB control panel 4 receives the start signal, and according to the liquid volume of the calibrated micro peristaltic pump 2 every millisecond, control it to work according to the corresponding time, and the micro peristaltic pump 2 extracts chemical material from the reagent bottle through the liquid suction pipe 21, and then is discharged to the pipette bottle body through infusion tube 22 and pipetting head 7, and stops pipetting after reaching the set pipetting amount, realizes accurate pipetting operation.PCB control panel 4 controls micro electric push rod 6 to push up and cooperate with snap ring 62 when pipetting is finished, and infusion tube 22 is closed, preventing liquid backflow.

[0045] The above is according to the ideal embodiment of the utility model for the inspiration, through the above-mentioned description, for the person skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be considered as limiting the claims involved.

[0046] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A micro electrically powered dispenser characterized by, include: The housing (1) includes a lower cavity (11), a middle cavity (12) and an upper cavity (13) sequentially formed inside the housing (1) from bottom to top, and an interactive component disposed on the top of the housing (1). A miniature peristaltic pump (2) is fixed inside the lower cavity (11); a battery (3) and a wireless charging coil (31) for providing wireless charging to the battery (3) are fixed inside the middle cavity (12); and a PCB control board (4) for sending and receiving control commands to the interactive component and controlling the miniature peristaltic pump (2) to perform precise liquid transfer is fixed inside the upper cavity (13). The interactive components include: a power toggle switch (5), a display screen (51), a pipetting adjustment button (52), and a pipetting button (53) mounted on the top of the housing (1); the power toggle switch (5) is used to control the power switch, the display screen (51) is used to display the currently set pipetting volume, the pipetting adjustment button (52) is used to adjust the pipetting volume, and the pipetting button (53) is used to control the pipetting switch.

2. A micro-electric dispenser according to claim 1, wherein: The micro peristaltic pump (2) has one end of its input tube (21) extending to the bottom of the housing (1) and one end of its output tube (22) extending to the side of the housing (1). Both the input tube (21) and the output tube (22) are corrosion-resistant flexible tubes. The battery (3) is electrically connected to the wireless charging coil (31), the micro peristaltic pump (2), the PCB control board (4), and the power switch (5). The PCB control board (4) is electrically connected to the wireless charging coil (31), the micro peristaltic pump (2), the power switch (5), the display screen (51), the pipetting adjustment button (52), and the pipetting button (53).

3. A micro-electric dispenser according to claim 1, wherein: The shell (1) is either circular or polygonal in shape, and has an open bottom.

4. A micro-electric dispenser according to claim 2, wherein: The interior of the central cavity (12) is provided with a pipeline closure assembly, which includes: a miniature electric push rod (6) fixed to the bottom of the inner side of the central cavity (12), a top block (61) fixed to the output end of the miniature electric push rod (6), and a retaining ring (62) fixed to the top of the inner side of the central cavity (12); the top block (61) and the retaining ring (62) are located at the bottom and top of the infusion tube (22), respectively.

5. A micro-electric dispenser according to claim 4, wherein: The top block (61) and the retaining ring (62) are located in the same plane. The top of the top block (61) and the bottom of the retaining ring (62) are both arc-shaped. The top of the top block (61) contacts the bottom of the infusion tube (22), and the bottom of the retaining ring (62) overlaps with the top of the infusion tube (22).

6. A micro-electric dispenser according to claim 4, wherein: The electric push rod is electrically connected to the battery (3) and the PCB control board (4) respectively.

7. A micro-electric dispenser according to claim 2, wherein: The infusion tube (22) is provided with a pipette tip (7) for guiding the direction of pipetting at one end located on the side of the housing (1).

8. A micro-electric dispenser according to claim 7, wherein: The inner side of the pipette head (7) is inserted with one end of the infusion tube (22) for convenient replacement of the pipette head (7) after multiple uses.

9. A micro-electric dispenser according to claim 1, wherein: The bottom of the shell (1) is clamped with a polytetrafluoroethylene gasket (8) for connecting, sealing, preventing leakage and corrosion resistance.

10. A reagent bottle characterized by: The reagent bottle is connected with the bottom of the shell (1) of the electric dispenser by screwing.

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