Pipetting device

Abstract

The utility model provides a pipetting device which comprises a first motor, a first injector, a second motor, a second injector and a pipette set, the first motor is in driving connection with the first injector, the second motor is in driving connection with the second injector, the pipette set is provided with a liquid suction inlet, a liquid discharge outlet, a first connector and a second connector, the liquid suction inlet is provided with a first one-way valve, and the liquid discharge outlet is provided with a second one-way valve. The liquid discharging outlet is provided with a second one-way valve, the first connector is communicated with a first injector, and the second connector is communicated with a second injector, so that the first injector and the second injector are cooperatively matched and extract liquid from the solution bottle through the liquid sucking inlet and the first one-way valve; in the operation process, the two motors are adopted for continuously adding the liquid, the extracting solution does not need to be sucked from a solution bottle by using a transfer pipette step by step, and then the extracting solution in the transfer pipette is dripped into the extracting tube, so that the extracting solution transfer efficiency is improved, and the extraction efficiency is improved. And the detection efficiency of food safety is also improved.

Description

Technical Field

[0001] The present application belongs to the technical field of experimental detection equipment, and more specifically, to a liquid transfer device. Background Art

[0002] At present, in food safety testing experiments, it is usually necessary to drop the extraction liquid pre-configured in the solution bottle into the extraction tube containing the test sample, so as to extract the target substance in the test sample through the extraction liquid; however, when the extraction liquid is transferred by the operator manually operating the pipette, it is necessary to first use the pipette to suck the extraction liquid from the solution bottle, and then drop the extraction liquid in the pipette into the extraction tube. When the amount of test samples is large, especially when the extraction liquid needs to be transferred to multiple different extraction tubes, the above-mentioned operation process of transferring the extraction liquid by the operator manually operating the pipette is relatively inefficient, thereby affecting the detection efficiency. Utility Model Content

[0003] The purpose of the present application is to provide a pipetting device, which aims to solve the problem of relatively low efficiency caused by the operator manually operating the pipette to draw the extract from the solution bottle and then drip the extract in the pipette into the extraction tube when the extract needs to be transferred to multiple different extraction tubes.

[0004] In order to solve the above technical problems, the technical solution adopted in this application is: to provide a pipetting device, including a first motor, a first syringe, a second motor, a second syringe and a pipette group, the first motor drives the first syringe, the second motor drives the second syringe, the pipette group has an aspiration inlet, a discharge outlet, a first interface and a second interface, the aspiration inlet is provided with a first one-way valve, the discharge outlet is provided with a second one-way valve, the first interface is connected to the first syringe, and the second interface is connected to the second syringe.

[0005] In one embodiment, the pipetting device also includes a packaging shell, the pipette group includes a first pipeline, a second pipeline and a third pipeline, the first motor, the first syringe, the second motor, the second syringe and the first pipeline are all arranged inside the packaging shell, the first pipeline has a first interface, a second interface, a third interface and a fourth interface, the second pipeline has a suction inlet and a fifth interface, the fifth interface is detachably connected to the third interface, the third pipeline has a discharge outlet and a sixth interface, and the sixth interface is detachably connected to the fourth interface.

[0006] In one embodiment, the fifth interface is connected to the third interface via a first pagoda connector, and the sixth interface is connected to the fourth interface via a second pagoda connector.

[0007] In one embodiment, the pipetting device further comprises a conical stopper, one end of the second pipeline having a liquid suction inlet is passed through the conical stopper, and the liquid suction inlet extends out of the conical stopper.

[0008] In one embodiment, the conical bottle stopper is an elastic member.

[0009] In one embodiment, the liquid transfer device further includes an operating handle, and one end of the third pipeline provided with a liquid discharge outlet is disposed on the operating handle, and the liquid discharge outlet extends out of the operating handle.

[0010] In one of the embodiments, the operating handle is further provided with an operating button that is communicatively connected to the first motor and the second motor.

[0011] The beneficial effect of the pipetting device provided in the present application lies in that, compared with the prior art, the suction inlet of the pipette group in the above-mentioned pipetting device is used to connect with a solution bottle containing an extract, and the discharge outlet of the pipette group is used to connect with an extraction tube filled with a test sample. The first motor and the second motor drive the first syringe and the second syringe respectively, and then drive the first syringe and the second syringe to cooperate with each other and extract the extract from the solution bottle through the suction inlet and the first one-way valve, and input the extracted extract into the extraction tube through the discharge outlet and the second one-way valve. The above operation process uses dual motors to continuously and uninterruptedly add liquid, and there is no need to use a pipette step by step to draw the extract from the solution bottle and then drip the extract in the pipette into the extraction tube, thereby improving the efficiency of extract transfer, that is, improving the efficiency of food safety detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A schematic diagram of the structure of a liquid transfer device provided in one embodiment of the present application.

[0014] In the figure: 10, pipetting device; 100, first motor; 200, first syringe; 300, second motor; 400, second syringe; 500, pipette group; 510, first pipeline; 511, first interface; 512, second interface; 513, third interface; 514, fourth interface; 520, second pipeline; 521, liquid suction inlet; 522, fifth interface; 530, third pipeline; 531, liquid discharge outlet; 532, sixth interface; 600, packaging shell; 700, conical stopper; 800, operating handle. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0016] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0017] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] See also Figure 1 , the pipetting device 10 provided in an embodiment of the present application is now described. The above-mentioned pipetting device 10 includes a first motor 100, a first syringe 200, a second motor 300, a second syringe 400 and a pipette group 500, wherein the first motor 100 reciprocates and drives the first syringe 200 in a linear direction, and the second motor 300 reciprocates and drives the second syringe 400 in a linear direction. The pipette group 500 has a first interface 511, a second interface 512, a liquid suction inlet 521 and a liquid discharge outlet 531, the first interface 511 is connected to the first syringe 200, the second interface 512 is connected to the second syringe 400, the liquid suction inlet 521 is provided with a first one-way valve (not shown in the figure) and is used to connect to a solution bottle (not shown in the figure) containing an extracting solution, and the liquid discharge outlet 531 is provided with a second one-way valve (not shown in the figure) and is used to connect to an extraction tube (not shown in the figure) filled with a test sample.

[0020] The beneficial effect of the pipetting device 10 provided in the present application lies in that, compared with the prior art, the suction inlet 521 of the pipette group 500 in the above-mentioned pipetting device 10 is used to connect with a solution bottle containing an extract, and the discharge outlet 531 of the pipette group 500 is used to connect with an extraction tube filled with a test sample. The first motor 100 and the second motor 300 respectively drive the first syringe 200 and the second syringe 400 to connect in a linear direction, thereby driving the first syringe 200 and the second syringe 400 to cooperate with each other to extract the extract from the solution bottle through the suction inlet 521 and the corresponding first one-way valve, and input the extracted extract into the extraction tube through the discharge outlet 531 and the corresponding second one-way valve. The above operation process adopts dual motors to continuously and uninterruptedly add liquid, and there is no need to use a pipette to draw the extract from the solution bottle in steps, and then drip the extract in the pipette into the extraction tube, thereby improving the efficiency of extract transfer, that is, improving the efficiency of food safety detection.

[0021] Furthermore, in the present embodiment, the first syringe 200 comprises a first barrel portion (not shown in the figure), and a first piston portion linearly movably connected to the first barrel portion, the first motor 100 is linearly driven to connect the first piston portion (not shown in the figure), and the first interface 511 is connected to an end of the first barrel portion facing away from the first piston portion; the second syringe 400 comprises a second barrel portion (not shown in the figure), and a second piston portion linearly movably connected to the second barrel portion (not shown in the figure), the second motor 300 is linearly driven to connect the second piston portion, and the second interface 512 is connected to an end of the second barrel portion facing away from the second piston portion.

[0022] Furthermore, in the present embodiment, the above-mentioned pipetting device 10 also includes a packaging shell 600, and the pipette group 500 includes a first pipeline 510, a second pipeline 520 and a third pipeline 530, wherein the first motor 100, the first syringe 200, the second motor 300, the second syringe 400 and the first pipeline 510 are all arranged inside the packaging shell 600, the first pipeline 510 has a first interface 511, a second interface 512, a third interface 513 and a fourth interface 514, the second pipeline 520 has a liquid suction inlet 521 and a fifth interface 522, and the fifth interface 522 is detachably connected to the third interface 513, the third pipeline 530 has a liquid discharge outlet 531 and a sixth interface 532, and the sixth interface 532 is detachably connected to the fourth interface 514.

[0023] Specifically, in this embodiment, the above-mentioned first pipeline 510, second pipeline 520 and third pipeline 530 are all hose structures, the fifth interface 522 is connected with the third interface 513 through a first pagoda connector (not shown in the figure), and the sixth interface 532 is connected with the fourth interface 514 through a second pagoda connector. It can be understood that the pagoda connector structure can realize the quick connection and separation of the fifth interface 522 and the third interface 513, or the sixth interface 532 and the fourth interface 514.

[0024] Furthermore, in the present embodiment, the above-mentioned pipetting device 10 also includes a conical stopper 700, and the second pipeline 520 is provided with an end of a liquid suction inlet 521 which is passed through the conical stopper 700, and the liquid suction inlet 521 extends out of the conical stopper 700. The conical stopper 700 is suitable for sealing the solution bottle when extracting the extract, thereby preventing the external environment from contaminating the extract in the solution bottle.

[0025] Specifically, in this embodiment, the conical stopper 700 is an elastic member, so that the conical stopper 700 can be better adapted to solution bottles of different calibers. In a specific embodiment, the conical stopper 700 is a silicone member.

[0026] Furthermore, in this embodiment, the above-mentioned pipetting device 10 further includes an operating handle 800 , and one end of the third pipeline 530 having a liquid discharge outlet 531 is disposed on the operating handle 800 , and the liquid discharge outlet 531 extends out of the operating handle 800 .

[0027] Furthermore, in the present embodiment, the operating handle 800 is further provided with an operating button which is communicatively connected to the first motor 100 and the second motor 300 .

[0028] The liquid transfer device of the present application can quickly absorb liquid, mainly for water, phosphate buffer, borate buffer and other inorganic buffers and some solutions containing ethanol or methanol, and the volume of the solution absorbed at a time is in the range of 1-30 ml. After the liquid transfer device is used, the pipette set 500, the first syringe 200 and the second motor 300 can be cleaned by adjusting the instrument to the maximum range and repeatedly absorbing pure water for cleaning.

[0029] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A liquid transfer device, characterized in that: It includes a first motor, a first syringe, a second motor, a second syringe and a pipette group. The first motor drives the first syringe, the second motor drives the second syringe, and the pipette group has an aspiration inlet, a discharge outlet, a first interface and a second interface. The aspiration inlet is provided with a first one-way valve, the discharge outlet is provided with a second one-way valve, the first interface is connected to the first syringe, and the second interface is connected to the second syringe.

2. The liquid transfer device according to claim 1, characterized in that: The pipetting device also includes a packaging shell, the pipette group includes a first pipeline, a second pipeline and a third pipeline, the first motor, the first syringe, the second motor, the second syringe and the first pipeline are all arranged inside the packaging shell, the first pipeline has the first interface, the second interface, the third interface and the fourth interface, the second pipeline has the suction inlet and the fifth interface, the fifth interface is detachably connected to the third interface, the third pipeline has the discharge outlet and the sixth interface, and the sixth interface is detachably connected to the fourth interface.

3. The liquid transfer device according to claim 2, characterized in that: The fifth interface is communicated with the third interface via a first pagoda connector, and the sixth interface is communicated with the fourth interface via a second pagoda connector.

4. The liquid transfer device according to claim 2, characterized in that: The liquid transfer device also includes a conical bottle stopper, and one end of the second pipeline provided with the liquid suction inlet is penetrated through the conical bottle stopper, and the liquid suction inlet extends out of the conical bottle stopper.

5. The liquid transfer device according to claim 4, characterized in that: The conical bottle stopper is an elastic member.

6. The liquid transfer device according to claim 2, characterized in that: The liquid transfer device further comprises an operating handle, and one end of the third pipeline provided with the liquid discharge outlet is arranged on the operating handle, and the liquid discharge outlet extends out of the operating handle.

7. The liquid transfer device according to claim 6, characterized in that: The operating handle is also provided with an operating button which is communicatively connected to the first motor and the second motor.

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