A quantitative adjustable pipette

Abstract

This utility model discloses a quantitatively adjustable pipette, relating to the field of pipette technology, including a pipette body and a push-pipette rod, which is movably installed inside the pipette body. This utility model features a quantitative adjustment control mechanism that allows setting the pipette's aspiration volume, enabling effective quantitative adjustment and control. A quantitative adjustment drive mechanism is driven from the inner side of the outer wall of the pipette body. A quantitative adjustment abutment mechanism is engaged with the quantitative adjustment drive mechanism. When engaged, the quantitative adjustment drive mechanism moves the abutment mechanism outward by a corresponding distance, thus abutting the push-pipette rod at its pressing position, thereby changing the quantitative sampling volume. The overall automatic adjustment and control makes it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a quantitative adjustable pipette. Background Technology

[0002] A pipette, also called a pipette gun, is a measuring tool used to transfer liquid from one container to another within a certain volume range. It is widely used in fields such as biology and chemistry.

[0003] Existing Chinese patent CN222872221U, published on May 16, 2025, discloses a pipette tip and a pipette. The pipette tip includes a first connecting sleeve, a pipette, a second connecting tube, and an adjustment assembly. The first connecting sleeve is sealed to the pipette tip of the pipette; the pipette has a suction end for aspirating liquid; one end of the second connecting sleeve is sealed to the pipette; the adjustment assembly is disposed at the other end of the second connecting sleeve and connected to the end of the first connecting sleeve away from the pipette, and the adjustment assembly includes a plurality of adjusting sleeves connected in sequence, at least some of which can be unfolded in sequence to adjust the distance between the pipette tip and the pipette.

[0004] However, in actual use, the above-mentioned device uses a method of separating the first connecting sleeve and the second connecting sleeve for quantitative adjustment and change. It cannot effectively and automatically adjust and change, and requires operation with tools, which makes it inconvenient to adjust and use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quantitatively adjustable pipette that can automatically adjust the quantity, making it more convenient to use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quantitative adjustable pipette, comprising:

[0008] pipette body;

[0009] Push the suction rod, which is movably installed in the middle of the inside of the pipette body;

[0010] A pipette tip positioning and disassembly mechanism is movably installed on the inner side of the pipette body and is sleeved on the periphery of the push pipette rod.

[0011] A suspension head is fixedly attached to the upper outer wall of the pipette body;

[0012] A quantitative adjustment and control mechanism is installed and connected to the inner side of the lower end of the pipette body;

[0013] A quantitative adjustment drive mechanism is installed and connected to the inner side of the outer wall of the pipette body;

[0014] A quantitative adjustment abutment mechanism is movably mounted on the pipette body and is engaged with a quantitative adjustment drive mechanism.

[0015] Through the above technical solution: the quantitative adjustment control mechanism can set the liquid volume of the pipette, and can effectively adjust and control the quantity. The quantitative adjustment drive mechanism can be driven on the inner side of the outer wall of the pipette body. The quantitative adjustment abutment mechanism is engaged with the quantitative adjustment drive mechanism. When the quantitative adjustment drive mechanism is engaged, it can drive the quantitative adjustment abutment mechanism to move, thereby protruding outward by a corresponding distance. This can abut against the downward pressing position of the push rod, so as to change the quantitative sampling volume of the push rod. The overall automatic adjustment and control makes it more convenient to use. The pipette body can be suspended on the rod body by the arc shape of the hanging head. The push rod can be pressed in the middle of the inside of the pipette body. When pressed, the push rod can expel internal air. When released, external liquid can be drawn through the pipette tube.

[0016] The present invention is further configured such that the pipette tip positioning and disassembly mechanism includes a pipette tip disassembly button, the lower end of which is fixedly connected to a pressing connecting rod, the lower end of which is fixedly connected to a body bottom, a T-shaped sleeve rod is fixedly connected to the middle of the upper end of the body bottom, a return spring is sleeved around the periphery of the T-shaped sleeve rod, the return spring and the T-shaped sleeve rod are movably installed inside the pipette body, a conical positioning tube is fixedly connected to the lower end of the body bottom, and a suction rod sleeve cavity is opened inside the body bottom and the conical positioning tube.

[0017] The above technical solution utilizes a suction head positioning and disassembly mechanism to achieve positioning, movement, and restoration for disassembly.

[0018] The present invention is further configured such that the bottom of the machine body and the conical positioning tube are sleeved on the periphery of the push suction rod through the suction rod sleeve cavity.

[0019] Through the above technical solution, the bottom of the machine body and the conical positioning tube can move on the suction rod through the suction rod sleeve, which can position and resist the disassembly and installation of the pipette tip.

[0020] The present invention is further configured such that the quantitative adjustment drive mechanism includes a hollow cover, the hollow cover is mounted on the pipette body by screws, a servo motor is mounted inside the hollow cover by screws, a first coupling is fixedly connected to the output shaft end of the servo motor, a drive gear is fixedly connected to the outer end of the first coupling, and a quantitative adjustment abutment mechanism is meshed with the lower end of the drive gear.

[0021] The above technical solution allows for quantitative adjustment of the drive mechanism structure, enabling quantitative adjustment of the drive mechanism.

[0022] The present invention is further configured such that the quantitative adjustment abutment mechanism includes a driven toothed plate, the driven toothed plate being meshed with a driving gear, and a quantitative abutment rod passing through the hollow cover is fixedly connected to the outer end of the driven toothed plate.

[0023] The above technical solution allows for the quantitative adjustment of the contact mechanism, which enables the positioning and movement of the protrusion to provide quantitative contact and obstruction.

[0024] The present invention is further configured such that the quantitative abutment rod is located below the push head of the aspiration rod, and the quantitative abutment rod is sleeved inside the pipette body.

[0025] The above technical solution allows the quantitative abutment rod to be positioned to block the pusher head of the suction rod, and the quantitative abutment rod can be positioned and moved inside the pipette body.

[0026] The present invention is further configured such that the quantitative adjustment and control mechanism includes a control panel housing, a chip circuit board is installed inside the control panel housing by screws, a touch screen is fixedly connected above the chip circuit board on the control panel housing, the touch screen and the chip circuit board are electrically connected by a connecting wire, and a rechargeable battery and a switch button module are electrically connected sequentially to the right side of the chip circuit board inside the control panel housing.

[0027] The above technical solution allows for quantitative adjustment and control via a quantitative adjustment and control mechanism.

[0028] The present invention is further configured such that the hanging head includes an arc-shaped hanging head, and an inner rubber pad is fixedly connected to the inner wall of the arc-shaped hanging head, and the arc-shaped hanging head is fixedly connected to the pipette body.

[0029] The above technical solutions increase the suspension friction by using a suspension head, making the suspension placement more stable.

[0030] The beneficial effects of this utility model are as follows:

[0031] 1. The pipette's aspiration volume can be set by a quantitative adjustment control mechanism, allowing for effective quantitative adjustment and control. The quantitative adjustment drive mechanism is driven from the inner side of the outer wall of the pipette body. The quantitative adjustment abutment mechanism is engaged with the quantitative adjustment drive mechanism. When engaged, the quantitative adjustment drive mechanism moves the quantitative adjustment abutment mechanism, causing it to protrude outward by a corresponding distance. This abuts against the downward movement of the aspiration rod, thus changing the quantitative sampling volume. The overall automatic adjustment and control makes it more convenient to use.

[0032] 2. With the addition of a hanging head structure, the pipette body is easy to hang and place. The arc shape of the hanging head and the rubber increase the friction, allowing it to be stably suspended on the rod. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of a quantitative adjustable pipette proposed in this utility model;

[0034] Figure 2 This is a schematic diagram of the pipette tip positioning and disassembly mechanism for an adjustable quantitative pipette proposed in this utility model;

[0035] Figure 3 This is a schematic diagram of the quantitative adjustment drive mechanism and quantitative adjustment contact mechanism of a quantitative adjustable pipette proposed in this utility model;

[0036] Figure 4 This is a schematic diagram of the quantitative adjustment and control mechanism of a quantitative adjustable pipette proposed in this utility model;

[0037] Figure 5 This is a schematic diagram of the suspension head structure of a quantitative adjustable pipette proposed in this utility model.

[0038] In the diagram: 1. Pipette body; 2. Arc-shaped hanger; 21. Inner rubber pad; 3. Tip removal button; 31. Bottom of the body; 32. Conical positioning tube; 33. Suction rod sleeve cavity; 34. Return spring; 35. T-shaped sleeve; 36. Downward connecting rod; 4. Push suction rod;

[0039] 5. Hollow housing; 51. Servo motor; 52. First coupling; 53. Drive gear; 54. Driven gear plate; 55. Metering contact rod; 6. Touch screen; 61. Rechargeable battery; 62. Control panel housing; 63. Chip circuit board; 64. Switch button module. Detailed Implementation

[0040] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0041] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0042] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0043] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0044] Reference Figures 1-5 A quantitative adjustable pipette includes a pipette body 1, a push suction rod 4, a pipette tip positioning and disassembly mechanism, a suspension head, a quantitative adjustment control mechanism, a quantitative adjustment drive mechanism, and a quantitative adjustment resistance mechanism.

[0045] The push rod 4 is movably installed inside the middle of the pipette body 1. The push rod 4 can be pressed inside the middle of the pipette body 1. When pressed, the push rod 4 can expel internal air, like a syringe. When released, the push rod 4 can be effectively restored by a spring, allowing the push rod 4 to draw liquid through the bottom pipette tip for pipetting. The specific structure of the push rod 4 and the pipette body 1 is common knowledge in the art, and its working principle has been fully disclosed and will not be described further. The pipette tip positioning and removal mechanism is movably installed inside the pipette body 1. The pipette tip positioning and removal mechanism can be pressed inside the pipette body 1 and is sleeved on the periphery of the push rod 4. When pressed down, the pipette tip can be removed from the push rod 4. The hanging head is fixed to the upper outer wall of the pipette body 1. The pipette body 1 is connected by the hanging head... The curved shape of the tip allows it to be suspended on the rod. The quantitative adjustment control mechanism is installed and connected to the inner side of the lower end of the pipette body 1. The quantitative adjustment control mechanism can set the aspiration volume of the pipette and can effectively adjust and control the amount of liquid. The quantitative adjustment drive mechanism is installed and connected to the inner side of the outer wall of the pipette body 1. The quantitative adjustment drive mechanism can be driven from the inner side of the outer wall of the pipette body 1. The quantitative adjustment abutment mechanism is movably installed on the pipette body 1. The quantitative adjustment abutment mechanism can be positioned and moved inside the pipette body 1. The quantitative adjustment abutment mechanism is engaged with the quantitative adjustment drive mechanism. When the quantitative adjustment drive mechanism is engaged, it can drive the quantitative adjustment abutment mechanism to move, thereby protruding outward by a corresponding distance. This abuts against the downward pressing position of the aspiration rod 4, so as to change the quantitative sampling volume of the aspiration rod 4. The overall automatic adjustment and control makes it more convenient to use.

[0046] Reference Figure 1 and Figure 2The suction head positioning and disassembly mechanism includes a suction head disassembly press 3. A downward connecting rod 36 is fixedly connected to the lower end of the suction head disassembly press 3. When a person presses the suction head disassembly press 3, the downward connecting rod 36 moves downward. The lower end of the downward connecting rod 36 is fixedly connected to the body bottom 31, which in turn moves the body bottom 31 downward. A T-shaped sleeve 35 is fixedly connected to the middle of the upper end of the body bottom 31, which in turn moves the T-shaped sleeve 35 downward. A return spring 34 is sleeved around the periphery of the T-shaped sleeve 35. The T-shaped sleeve 35 compresses the return spring 34, causing it to deform and generate a deformation restoring force. When the pressure is released, the return spring 34 can abut against the T-shaped sleeve 35 to return, and the T-shaped sleeve 35 will drive the bottom of the body 31 to return. The bottom of the body 31 can then drive the downward connecting rod 36 and the suction tip disassembly button 3 to return. The return spring 34 and the T-shaped sleeve 35 are movably installed inside the pipette body 1 and can be positioned and moved. The lower end of the bottom of the body 31 is fixedly connected to a conical positioning tube 32. When the bottom of the body 31 moves downward, it can drive the conical positioning tube 32 to move downward. The bottom of the body 31 and the conical positioning tube 32 have suction rod sleeve 33 inside, which can be limited and installed.

[0047] The bottom of the machine body 31 and the conical positioning tube 32 are sleeved on the periphery of the push suction rod 4 through the suction rod sleeve cavity 33. When the bottom of the machine body 31 and the conical positioning tube 32 move downward, the pipetting tip installed on the push suction rod 4 can be removed.

[0048] Reference Figure 1 , Figure 3 and Figure 4 The quantitative adjustment drive mechanism includes a hollow housing 5, which is mounted on the pipette body 1 with screws for easy installation and removal. A servo motor 51 is mounted inside the hollow housing 5 with screws, allowing for stable driving within the housing. A first coupling 52 is fixedly connected to the output shaft of the servo motor 51. When the output shaft of the servo motor 51 rotates in the forward direction, it drives the first coupling 52 to rotate in the forward direction. A drive gear 53 is fixedly connected to the outer end of the first coupling 52, allowing it to drive the drive gear 53 to rotate in the forward direction. A quantitative adjustment abutment mechanism is meshed at the lower end of the drive gear 53, allowing it to move outward. The rotation of the drive gear 53 allows for corresponding abutment at the moving position, facilitating quantitative adjustment drive.

[0049] The quantitative adjustment abutment mechanism includes a driven toothed plate 54, which is meshed with a driving gear 53. When the driving gear 53 rotates, it can drive the driven toothed plate 54 to move. A quantitative abutment rod 55 passing through the hollow cover 5 is fixed to the outer end of the driven toothed plate 54. When the driven toothed plate 54 moves, it can change the position of the quantitative abutment rod 55. The quantitative abutment rod 55 can be positioned and moved in the hollow cover 5.

[0050] The quantitative contact rod 55 is located below the pressing head of the push suction rod 4, so that it can make corresponding contact. The quantitative contact rod 55 is sleeved inside the pipette body 1 and can be positioned and moved for use.

[0051] The quantitative adjustment and control mechanism includes a control panel housing 62, which is mounted on the pipette body 1 with screws. Inside the control panel housing 62, a chip circuit board 63 is mounted with screws for corresponding control. Above the chip circuit board 63, a touch screen 6 is fixed to the control panel housing 62 for easy touch operation. The specific structure of the chip circuit board 63 and the touch screen 6 is common knowledge in the field, and their working principle has been fully disclosed and will not be described further. The touch screen 6 and the chip circuit board 63 are electrically connected by a connecting wire for easy electrical control. The chip circuit board 63 is also electrically connected to the servo motor 51 by a connecting wire, which facilitates the operation and control of the servo motor 51. On the right side of the chip circuit board 63, inside the control panel housing 62, a rechargeable battery 61 and a switch button module 64 are electrically connected in sequence for easy electrical operation control and power supply.

[0052] Reference Figure 1 and Figure 5 The hanging head includes an arc-shaped hanging head 2. An inner rubber pad 21 is fixed to the inner wall of the arc-shaped hanging head 2. The inner rubber pad 21 is made of rubber, which can increase the friction when hanging, so that it can be placed stably. The arc-shaped hanging head 2 is fixed to the pipette body 1, and the arc-shaped hanging head 2 can drive the pipette body 1 to be suspended.

[0053] Working principle: The push rod 4 can be pressed in the middle of the inside of the pipette body 1. When pressed, the push rod 4 can expel internal air, just like a syringe. When released, the push rod 4 can be effectively restored by the spring, so that the push rod 4 can pass through the bottom tip to draw up liquid for pipetting. The specific structure of the push rod 4 and the pipette body 1 is common knowledge in the field, and its working principle has been fully disclosed. The specific operation and liquid aspiration method will not be described again. The tip positioning and disassembly mechanism can be pressed on the inside of the pipette body 1. When the tip positioning and disassembly mechanism is pressed down, it can remove the pipette tip installed on the push rod 4.

[0054] When placed, the pipette body 1 can be suspended on the rod by the arc shape of the suspension head.

[0055] During quantitative adjustment, the quantitative adjustment control mechanism can set the aspiration volume of the pipette, enabling effective quantitative adjustment and control. The quantitative adjustment drive mechanism can be driven on the inner side of the outer wall of the pipette body 1. The quantitative adjustment abutment mechanism is engaged with the quantitative adjustment drive mechanism. When engaged, the quantitative adjustment drive mechanism can drive the quantitative adjustment abutment mechanism to move, thereby protruding outward by a corresponding distance. This abuts against the downward pressing position of the aspiration rod 4, allowing the quantitative sampling volume of the aspiration rod 4 to be changed. The overall automatic adjustment and control makes it more convenient to use.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quantitative adjustable pipette, characterized in that, include: Pipette body (1); Push the suction rod (4), which is movably installed in the middle of the inside of the pipette body (1); A pipette tip positioning and disassembly mechanism is movably installed on the inner side of the pipette body (1) and is sleeved on the periphery of the push suction rod (4). The suspension head is fixed to the upper outer wall of the pipette body (1); A quantitative adjustment and control mechanism is installed and connected to the inner side of the lower end of the pipette body (1); A quantitative adjustment drive mechanism is installed and connected to the inner side of the outer wall of the pipette body (1); A quantitative adjustment abutment mechanism is movably mounted on the pipette body (1) and is engaged with a quantitative adjustment drive mechanism.

2. The adjustable quantitative pipette according to claim 1, characterized in that, The pipette tip positioning and disassembly mechanism includes a pipette tip disassembly button (3), the lower end of which is fixedly connected to a pressing connecting rod (36), the lower end of which is fixedly connected to a body bottom (31), a T-shaped sleeve rod (35) is fixedly connected to the middle of the upper end of the body bottom (31), a return spring (34) is sleeved around the T-shaped sleeve rod (35), the return spring (34) and the T-shaped sleeve rod (35) are movably installed in the inner side of the pipette body (1), a conical positioning tube (32) is fixedly connected to the lower end of the body bottom (31), and a suction rod sleeve cavity (33) is opened inside the body bottom (31) and the conical positioning tube (32).

3. The adjustable quantitative pipette according to claim 2, characterized in that, The bottom of the machine body (31) and the conical positioning tube (32) are sleeved on the periphery of the push suction rod (4) through the suction rod sleeve cavity (33).

4. The adjustable quantitative pipette according to claim 1, characterized in that, The quantitative adjustment drive mechanism includes a hollow cover (5), which is mounted on the pipette body (1) by screws. A servo motor (51) is mounted inside the hollow cover (5) by screws. A first coupling (52) is fixedly connected to the output shaft end of the servo motor (51). A drive gear (53) is fixedly connected to the outer end of the first coupling (52). A quantitative adjustment abutment mechanism is meshed at the lower end of the drive gear (53).

5. The adjustable quantitative pipette according to claim 1, characterized in that, The quantitative adjustment abutment mechanism includes a driven toothed plate (54), which is meshed with a drive gear (53), and a quantitative abutment rod (55) that passes through the hollow cover (5) is fixed to the outer end of the driven toothed plate (54).

6. The adjustable quantitative pipette according to claim 5, characterized in that, The quantitative contact rod (55) is located below the pressing head of the push suction rod (4), and the quantitative contact rod (55) is sleeved inside the pipette body (1).

7. The adjustable quantitative pipette according to claim 1, characterized in that, The quantitative adjustment and control mechanism includes a control panel housing (62). A chip circuit board (63) is installed inside the control panel housing (62) by screws. A touch screen (6) is fixed on the control panel housing (62) above the chip circuit board (63). The touch screen (6) and the chip circuit board (63) are electrically connected by a connecting wire. A rechargeable battery (61) and a switch button module (64) are electrically connected in sequence to the right side of the chip circuit board (63) inside the control panel housing (62).

8. The adjustable quantitative pipette according to claim 1, characterized in that, The hanging head includes an arc-shaped hanging head (2), and an inner rubber pad (21) is fixedly attached to the inner wall of the arc-shaped hanging head (2). The arc-shaped hanging head (2) is fixedly attached to the pipette body (1).

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