CN108080048B - Double-end liquid-transfering gun of interval adjustable - Google Patents
Double-end liquid-transfering gun of interval adjustable Download PDFInfo
- Publication number
- CN108080048B CN108080048B CN201711453867.2A CN201711453867A CN108080048B CN 108080048 B CN108080048 B CN 108080048B CN 201711453867 A CN201711453867 A CN 201711453867A CN 108080048 B CN108080048 B CN 108080048B
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- inner rod
- rod
- assembly
- pipetting
- shell
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- 230000009977 dual effect Effects 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Toys (AREA)
Abstract
The invention relates to an experimental instrument in the field of mechanical and biochemical intersection, in particular to a double-head pipette. A dual head pipette with adjustable spacing comprising: a housing assembly, an inner rod assembly, a gear set assembly, and two sets of pipette guns; when in use, the utility model is characterized in that: firstly, adjusting the interval between two pipette guns in a double pipette gun assembly through a rotary gear set assembly; then pressing the inner rod in the inner rod assembly to the bottom, and inserting the gun heads on the two pipetting guns into the pipetted liquid; after the pressure is released to the inner rod, the liquid is sucked into the gun head by the liquid-transferring gun; finally, the device is moved to the surface of the material, the inner rod is pressed, and the liquid with the same volume and certain interval is dripped out; the bevel gear screw in the gear set assembly can accurately adjust the distance between the two pipetting guns, so that the same volume of liquid can be simultaneously pipetted, and the distance of the pipetting can be controlled, so that the invention can more easily meet the special experimental requirements.
Description
Technical Field
The invention relates to an experimental instrument in the field of mechanical and biochemical intersection, in particular to a double-head pipette.
Background
The pipette is a kind of pipette, is commonly used for transferring small or trace liquid, and is an indispensable high-precision instrument in experiments in the fields of mechanical biochemistry and intersection thereof. The shapes and the sizes produced by different manufacturers are slightly different, but the working principle and the operation method are basically consistent.
In some cases, the experiment needs to simultaneously remove the same volume of liquid under a controllable interval, such as a comparison experiment related to a functional surface, a dynamic fusion experiment of liquid drops, an evaporation comparison experiment of liquid drops, a molecular diffusion experiment and the like. Although the existing pipetting gun can be provided with a plurality of gun heads, a plurality of liquids with the same volume can be simultaneously pipetted, the gun head interval is fixed, and the practical experiment requirement cannot be met. The manual operation is performed one by one, and great errors are brought to experiments.
Disclosure of Invention
The purpose of the invention is that: make up the defect of current liquid-transfering gun, design a double-end liquid-transfering gun of interval adjustable.
The technical scheme of the invention is as follows: a dual head pipette with adjustable spacing comprising: the device comprises a shell component, an inner rod component, a gear set component and two groups of pipette guns, wherein the inner rod component, the gear set component and the two groups of pipette guns penetrate through the shell component from the bottom;
the inner rod assembly includes: an inner rod and an inverted U-shaped groove block fixedly connected with one end of the inner rod; the top of the inner rod extends out of the shell assembly, a spring is sleeved outside the inner rod positioned in the shell assembly, the top of the spring is abutted against an annular limit groove on the outer circumference of the inner rod, and the bottom of the spring is abutted against a lower limit block on the inner wall of the shell assembly; the inner rod assembly is movable within the outer housing assembly along an axial direction of the inner rod;
the gearset assembly includes: a spiral rod with one end fixedly connected with a bevel gear and two lead screws with one end fixedly connected with the bevel gear; the two screw rods are fixedly connected with one end of the bevel gear and coaxially opposite, the other end of the bevel gear is supported on two side walls of the inverted U-shaped groove block through bearings respectively, the bevel gears at the end parts of the rotary rods are meshed with the bevel gears at the end parts of the two screw rods respectively, and the other end of the bevel gear is supported on the shell component through bearings; the two lead screws are driven to rotate by rotating the rotary rod;
the pressing rod, namely the pipetting rod, of the two pipetting guns is sleeved on the two screw rods through screw rod holes respectively, and when the screw rods rotate, the pipetting guns are driven to move along the axial direction of the screw rods through the pipetting rods so as to adjust the distance between the two pipetting guns.
The using method comprises the following steps: rotating a knob in the gear set assembly to adjust the interval between two pipette guns in the double pipette gun assembly; pressing an inner rod in the inner rod assembly to the bottom, and inserting the gun heads on the two pipetting guns into the pipetted liquid; releasing pressure on the inner rod, wherein liquid is sucked into the gun head; the device is moved to the surface of the material, the inner rod is pressed, and the liquid with the same volume and a certain interval is dripped out.
The beneficial effects are that:
(1) According to the invention, the two liquid-transferring guns are arranged on the rack rod in the shell component, the distance between the two liquid-transferring guns can be accurately adjusted by the bevel gear screw rod in the gear group component, so that the liquid with the same volume can be simultaneously transferred and taken, and the transferring distance can be controlled, so that the invention can more easily meet the special experimental requirements.
(2) The bearing in the inner rod assembly limits the displacement of the bevel gear screw in the gear set assembly, the upper limit groove and the lower limit groove limit the position of the spring, and after the pressure of the inner rod is released, the spring is restored to the initial position; the hollow rod in the outer shell assembly directly limits the displacement of the upright in the inner rod and indirectly limits the displacement of the whole inner rod assembly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the housing assembly of the present invention;
FIG. 3 is a schematic view of the construction of the inner rod assembly of the present invention;
FIG. 4 is a schematic representation of the structure of the gearset assembly of the present invention;
FIG. 5 is a schematic illustration of the structure of a dual pipette assembly of the present invention.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
Referring to fig. 1, this embodiment provides a dual-head micropipette gun with adjustable spacing, comprising: a housing assembly, an inner lever assembly, a gear set assembly, and a dual pipette assembly;
referring to fig. 2, the housing assembly includes: a cylindrical housing 18, and a rectangular housing 36 connected to one axial end of the cylindrical housing 18; an arc-shaped lower limiting block 6 is arranged on the hole wall of the inner rod hole 16, the spring 4 is positioned in the inner rod hole 16, and the bottom of the spring is limited by the lower limiting block 6; the upper part of the outer circumference of the cylindrical shell 18 is provided with a handle 17, an opening is axially processed on the circumferential surface, and the opening is closed by an arm cover 2 fixedly connected on the cylindrical shell 18.
The rectangular shell 36 is provided with a through hole communicated with the inner rod hole 16 at the joint with the cylindrical shell 18, an opening is processed on one side wall of the rectangular shell 36, and the opening is closed by a flat plate cover 15 fixedly connected on the rectangular shell 36. A bearing A10 is arranged at the center of the flat cover 15; four vertical hollow rods 12 and two horizontal hack levers 13 are arranged on the bottom plate 14 of the rectangular shell 36.
Referring to fig. 3, the inner rod assembly includes: an inner rod 20 and an inverted U-shaped channel block 22; a top cover 19 is fixed on the top of the inner rod 20; an upper annular limiting groove 21 is formed in the outer circumference of the inner rod 20; two side walls of the inverted U-shaped groove block 22 are respectively provided with a group of bearings B23, and the bottom of the inverted U-shaped groove block 22 is provided with a vertical rod 25. The inner rod 20 is located in the inner rod hole 16 of the cylindrical shell 18, penetrates through the spring 4 in the cylindrical shell 18, and the top of the spring 4 is clamped in the upper limit groove 21 of the inner rod 20. The inverted U-shaped groove block 22 is positioned in the rectangular shell 36, the lower part of the inner rod 20 passes through a through hole on the rectangular shell 36 and is fixedly connected with the top of the inverted U-shaped groove block 22, and the upright rod 25 at the bottom of the inverted U-shaped groove block 22 is inserted into the hollow rod 12 on the bottom plate 14 of the rectangular shell 36, so that the inverted U-shaped groove block 22 can move up and down, and the hollow rod 12 directly limits the displacement of the upright rod 25 in the inner rod assembly so as to indirectly limit the displacement of the whole inner rod assembly.
Referring to fig. 4, a gearset assembly includes: two lead screws 26, a knob 30 and a rotary rod 27, wherein one ends of the lead screws are fixedly connected with bevel gears; one end of the two screw rods 26 fixedly connected with the bevel gears is coaxially opposite, the other end of the two screw rods are respectively supported on bearings B23 on the two side walls of the inverted U-shaped groove block 22, one end of the rotary rod 27 is fixedly connected with the bevel gears, the other end of the rotary rod 27 is supported on a bearing A10 on the flat cover 15, and the bevel gears at the end parts of the rotary rod 27 are respectively meshed with the bevel gears at the end parts of the two screw rods 26; the knob 30 is matched with a square hole 28 at the bottom of the rotary rod 27 through a square plug 29 at the end surface, so that the screw rod 26 is controlled to rotate through rotating the knob 30.
Referring to fig. 5, the dual pipette assembly includes: two groups of liquid-transferring guns 34, in this embodiment, the liquid-transferring guns 34 are micro liquid-transferring guns, the upper end of a liquid-transferring rod 31 which is a pressing rod of the liquid-transferring gun 34 is provided with a screw hole 32 matched with a screw 26, and the axis of the screw hole 32 is vertical to the axis of the liquid-transferring rod 31; the lower end is fixedly arranged in a pipetting rod hole 33 of the pipetting gun 34; two opposite sides of the outer circumference of the pipette 34 are provided with stand 35. The two pipetting rods 31 are vertically sleeved at two ends of the screw rod 26 through respective screw holes 32, the two groups of pipetting guns 34 are respectively placed on the rack rods 13 of the bottom plate 14 of the rectangular shell 36 through the stand seats 35, the pipetting guns 34 are vertically positioned between the two rack rods 13, and the rack rods 13 are used for limiting the movement track of the pipetting guns 34.
Further, in order to prevent experimental errors caused by deformation of the material, the bottom plate 14 is made of stainless steel.
The using method of the device comprises the following steps:
rotating the knob 30 in the gear set assembly, driving the two screw rods 26 to rotate through the mutually meshed bevel gears, and further enabling the pipetting rod 31 to drive the pipetting guns 34 to move along the axis of the screw rods 26 so as to adjust the distance between the two pipetting guns 34; then the handle 17 in the outer shell assembly is placed on the index finger, the cylindrical shell 18 is held, the inner rod 20 in the inner rod assembly is pressed to the bottom, and the gun heads on the two pipetting guns 34 are inserted into the liquid to be pipetted; after releasing the inner rod 20, the spring 4 returns it to its original position, and liquid is sucked into the gun head by the pipette 34; by moving the device to the surface of the material and pressing the inner rod 20, the same volume of liquid can be dropped out at a certain distance.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A double-end liquid-transfering gun of interval adjustable, its characterized in that: comprising the following steps: a housing assembly, an inner rod assembly positioned inside the housing assembly, a gear set assembly, and two sets of pipette guns (34) with bottoms penetrating out of the housing assembly;
the inner rod assembly includes: an inner rod (20) and an inverted U-shaped groove block (22) fixedly connected to one end of the inner rod (20); the top of the inner rod (20) extends out of the shell assembly, a spring (4) is sleeved outside the inner rod (20) positioned in the shell assembly, the top of the spring (4) is abutted against an annular limit groove (21) on the outer circumference of the inner rod (20), and the bottom of the spring is abutted against a lower limit block (6) on the inner wall of the shell assembly; -said inner rod assembly being movable within said outer shell assembly along the axial direction of said inner rod (20);
the gearset assembly includes: a spiral rod (27) with one end fixedly connected with a bevel gear and two lead screws (26) with one end fixedly connected with the bevel gear; one ends of the two lead screws (26) fixedly connected with bevel gears are coaxially opposite, the other ends of the two lead screws are respectively supported on two side walls of the inverted U-shaped groove block (22) through bearings, the bevel gears at the end parts of the rotary rods (27) are respectively meshed with the bevel gears at the end parts of the two lead screws (26), and the other ends of the bevel gears are supported on the shell component through bearings; the two lead screws (26) are driven to rotate by rotating the rotary rod (27); the knob (30) is matched with a square hole (28) at the bottom of the rotary rod (27) through a Fang Chatou (29) on the end surface, so that the screw rod (26) is controlled to rotate through rotating the knob (30);
the pressing rod, namely a pipetting rod (31), of the two pipetting guns (34) is sleeved on the two lead screws (26) through lead screw holes (32), and when the lead screws (26) rotate, the pipetting rods (31) drive the pipetting guns (34) to move along the axial direction of the lead screws (26) so as to adjust the interval between the two pipetting guns (34);
the housing assembly includes: a cylindrical housing (18) and a rectangular housing (36) connected to one axial end of the cylindrical housing (18); an inner rod hole (16) penetrating along the axial direction is formed in the cylindrical shell (18), and a lower limiting block (6) used for limiting the spring (4) is arranged on the wall of the inner rod hole (16); the inverted U-shaped groove block (22) is positioned in the rectangular shell (36), a through hole communicated with the inner rod hole (16) is formed in the joint of the rectangular shell (36) and the cylindrical shell (18), and the inner rod (20) passes through the through hole and is fixedly connected with the inverted U-shaped groove block (22);
the bottom plate (14) of the rectangular shell (36) is provided with more than four vertical hollow rods (12); the inverted U-shaped groove block (22) is in sliding fit with the hollow rod (12) through a vertical rod (25) at the bottom of the inverted U-shaped groove block, so that the inverted U-shaped groove block (22) can move along the axial direction of the vertical rod (25);
a frame seat (35) which plays a role in guiding the movement of the pipetting gun (34) is arranged on the outer wall of the pipetting gun; the frame seat (35) is in sliding fit with a frame rod (13) which is axially consistent with the screw rod (26) on the bottom plate (14) of the rectangular shell (36).
2. A dual head pipette with adjustable spacing as defined in claim 1 wherein: a handle (17) is arranged above the cylindrical shell (18).
3. The adjustable-spacing dual head pipette of claim 1 wherein: the bottom plate (14) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453867.2A CN108080048B (en) | 2017-12-28 | 2017-12-28 | Double-end liquid-transfering gun of interval adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453867.2A CN108080048B (en) | 2017-12-28 | 2017-12-28 | Double-end liquid-transfering gun of interval adjustable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108080048A CN108080048A (en) | 2018-05-29 |
| CN108080048B true CN108080048B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711453867.2A Active CN108080048B (en) | 2017-12-28 | 2017-12-28 | Double-end liquid-transfering gun of interval adjustable |
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| Country | Link |
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| CN (1) | CN108080048B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292961B (en) * | 2019-07-02 | 2021-07-20 | 英诺维尔智能科技（苏州）有限公司 | Sealing structure of pipette tip |
| CN110193388B (en) * | 2019-07-08 | 2023-12-15 | 江苏汇先医药技术有限公司 | Multi-channel automatic pipetting gun |
| CN114225987B (en) * | 2021-11-15 | 2023-03-07 | 北京理工大学 | Double-droplet generation device capable of being controlled respectively |
| CN115215077B (en) * | 2022-07-22 | 2023-12-22 | 上海鼎珂科技有限公司 | Vertical moving device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057281A (en) * | 1990-05-07 | 1991-10-15 | Matrix Technologies Corporation | Adjustable multi-channel pipetter |
| JPH0949848A (en) * | 1995-08-07 | 1997-02-18 | Suzuki Motor Corp | Dispensing device |
| US6146594A (en) * | 1999-02-10 | 2000-11-14 | Robbins Scientific Corporation | Syringe array with adjustable needle spacing |
| US6235244B1 (en) * | 1998-12-14 | 2001-05-22 | Matrix Technologies Corp. | Uniformly expandable multi-channel pipettor |
| CN103586095A (en) * | 2013-11-26 | 2014-02-19 | 东南大学 | Multichannel pipettor |
| CN204063006U (en) * | 2014-09-22 | 2014-12-31 | 李彦 | A kind of for the two flame gun device of flame forming plate numerical control device |
| CN204074104U (en) * | 2014-08-30 | 2015-01-07 | 中国烟草总公司郑州烟草研究院 | A kind of townhouse formula rifle head being applicable to multichannel liquid-transfering gun |
| CN208032603U (en) * | 2017-12-28 | 2018-11-02 | 北京理工大学 | A kind of double end liquid-transfering gun adjustable in pitch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9339810B2 (en) * | 2008-05-05 | 2016-05-17 | Integra Biosciences Ag | Multi-channel pipettor with repositionable tips |
-
2017
- 2017-12-28 CN CN201711453867.2A patent/CN108080048B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057281A (en) * | 1990-05-07 | 1991-10-15 | Matrix Technologies Corporation | Adjustable multi-channel pipetter |
| JPH0949848A (en) * | 1995-08-07 | 1997-02-18 | Suzuki Motor Corp | Dispensing device |
| US6235244B1 (en) * | 1998-12-14 | 2001-05-22 | Matrix Technologies Corp. | Uniformly expandable multi-channel pipettor |
| US6146594A (en) * | 1999-02-10 | 2000-11-14 | Robbins Scientific Corporation | Syringe array with adjustable needle spacing |
| CN103586095A (en) * | 2013-11-26 | 2014-02-19 | 东南大学 | Multichannel pipettor |
| CN204074104U (en) * | 2014-08-30 | 2015-01-07 | 中国烟草总公司郑州烟草研究院 | A kind of townhouse formula rifle head being applicable to multichannel liquid-transfering gun |
| CN204063006U (en) * | 2014-09-22 | 2014-12-31 | 李彦 | A kind of for the two flame gun device of flame forming plate numerical control device |
| CN208032603U (en) * | 2017-12-28 | 2018-11-02 | 北京理工大学 | A kind of double end liquid-transfering gun adjustable in pitch |
Non-Patent Citations (1)
| Title |
|---|
| 谢志豪 ; 方辉 ; 袁泽林 ; .数字化移液工作站的设计与开发.机械设计与研究.2017,第33卷(第05期),第188-191页. * |
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| Publication number | Publication date |
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| CN108080048A (en) | 2018-05-29 |
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