CN109453829A - High-precision liquid takes pipe - Google Patents
High-precision liquid takes pipe Download PDFInfo
- Publication number
- CN109453829A CN109453829A CN201811212544.9A CN201811212544A CN109453829A CN 109453829 A CN109453829 A CN 109453829A CN 201811212544 A CN201811212544 A CN 201811212544A CN 109453829 A CN109453829 A CN 109453829A
- Authority
- CN
- China
- Prior art keywords
- inner screw
- screw sheath
- micro motor
- control chip
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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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
Abstract
The present invention provides a kind of high-precision liquid and takes pipe, including control chip, injection tube assembly, micro motor, external thread sleeve, inner screw sheath and range sensor；To drive the push rod to be advanced axially relative or retreat, the control chip is set to one end far from the injection tube assembly of inner screw sheath and is electrically connected with the micro motor with the rotation angle for controlling the motor, the range sensor is set to one end far from the injection tube assembly of the inner screw sheath and is located at the inside of inner screw sheath, the range sensor is used to detect the distance between the end of the external thread sleeve Yu the inner screw sheath, which connect with the control chip communication；The tail end of the inner screw sheath is additionally provided with a pressure sensor, the pressure sensor is electrically connected with the control chip, the pressure value that the control chip is used to be detected according to the pressure sensor controls the micro motor revolving speed, to control liquid assimilating speed or the velocity of discharge.
Description
Technical field
The present invention relates to field of precision instruments, and in particular to a kind of high-precision liquid takes pipe.
Background technique
It in the prior art, is all to be carried out using dropper when the chemicals that chemical laboratory carries out kind of liquid is taken
, the absorption and discharge of liquid are realized by the hollow rubber ball at pipe tail, it is convenient and efficient, it can be difficult to liquid
Amount is accurately controlled.
Therefore, the prior art is defective, needs to improve.
Summary of the invention
The embodiment of the present invention provides a kind of high-precision liquid and takes pipe, has quantitative extract or the beneficial effect of injecting fluid
Fruit.
The present invention provides a kind of high-precision liquids to take pipe, which is characterized in that including control chip, injection tube assembly,
Micro motor, external thread sleeve, inner screw sheath and range sensor；
The push rod that the injection tube assembly includes shell, is set to the intracorporal piston of shell and connect with piston, the shell
The first end of tail end and the inner screw sheath be detachably connected, the micro motor be set to the tail end of the shell and with the push rod
End connection, the external thread sleeve are connect with the shaft of the micro motor；
The external thread sleeve connect with the inner screw sheath spiral so that its can along the axial screw of the inner screw sheath advance or
Person retreats, so that the push rod be driven to be advanced axially relative or retreat, which is set to separate injection-tube of inner screw sheath
It one end of component and is electrically connected with the micro motor with the rotation angle for controlling the motor, which is set to this
One end far from the injection tube assembly of inner screw sheath and the inside for being located at inner screw sheath, the range sensor are outer for detecting this
The distance between the end of thread bush and the inner screw sheath, the range sensor are connect with the control chip communication；
It further include one for inputting the voice input module of injection volume or extraction amount, which is set to this
The outside of circuit board is simultaneously connect with the control chip communication；
The injection volume or extraction meter that the control chip is used to be inputted according to the voice input module calculate the push rod need
Then the distance perhaps retreated of advancing calculates the rotation angle of the micro motor according to the distance of the advance or retrogressing
Value, and control the micro motor and rotate corresponding angle towards corresponding direction.
It is taken in pipe in high-precision liquid of the present invention, further includes a metal screw, which passes through the metal
Screw element is detachably connected with inner screw sheath realization, and the first conductive metal layer is provided on the outer wall of the external thread sleeve,
The second conductive metal layer is provided on the side wall and tail end of the shell, the internal thread structure of the inner screw sheath is conductive metal,
The external thread structure of the external thread sleeve is conductive metal；
One positive output port of the control chip passes sequentially through first conductive metal layer, the second conductive metal layer and is somebody's turn to do
One positive input port of micro motor is electrically connected；
One negative output port of the control chip passes sequentially through the internal thread structure, external thread structure and the micro motor
A negative input port electrical connection.
It is taken in pipe in high-precision liquid of the present invention, the end of the micro motor and the end of the push rod are circumferential
It is flexibly connected, and axial restraint, the end of the micro motor and the shell are circumferentially fixed.
It is taken in pipe in high-precision liquid of the present invention, the position for closing on end of micro motor is provided with accommodating chamber
And the through-hole being connected to the accommodating chamber is provided in the end, and a rotatably round connecting plate is provided in the accommodating chamber, it should
An irregularly-shaped hole is offered at the axis of connecting plate, the end of the push rod passes through the through-hole and crosses win with the irregularly-shaped hole on the connecting plate
It is cooperatively connected.
It is taken in pipe in high-precision liquid of the present invention, is provided with retention bead on the tail end of the shell, this is miniature
The end of motor is provided with limiting groove, which is plugged in the limiting groove.
The present invention by control chip controls micro motor rotational angle come realize to the push rod advance or retreat away from
From accurate control, liquid assimilating or the discharge of pinpoint accuracy may be implemented；And it is possible to be adjusted by pressure sensor
Liquid assimilating speed and the velocity of discharge.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram that high-precision liquid in the embodiment of the present invention takes pipe.
Fig. 2 is the annexation figure of push rod Yu the micro motor.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.?
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Please refer to Fig. 1, Fig. 1 is the structural schematic diagram that high-precision liquid in one embodiment of the invention takes pipe, this is high-precision
Degree liquid takes pipe, including control chip 60, injection tube assembly 10, micro motor 20, external thread sleeve 30 and inner screw sheath 40.
Wherein, which pushes away including shell 11, the piston 12 being set in shell 11, with what piston 12 was connect
Bar 13, be set to the shell 11 head end syringe needle 14.The tail end of the shell 11 and the first end of the inner screw sheath 40 are detachable
Connection, such as can disassemble and use and snap connection, or in the present embodiment, the first end of the tail end of the shell 11 and the inner screw sheath 40
It is detachably connected by the metal screw 50 realization.
The shell is detachably connected by the metal screw and inner screw sheath realization, the outer wall of the external thread sleeve
On be provided with the first conductive metal layer, be provided with the second conductive metal layer on the side wall and tail end of the shell, the inner screw sheath
Internal thread structure be conductive metal, the external thread structure of the external thread sleeve is conductive metal；One of the control chip is just defeated
Exit port passes sequentially through first conductive metal layer, a positive input port of the second conductive metal layer and the micro motor is electrically connected
It connects；One negative output port of the control chip passes sequentially through the one of the internal thread structure, external thread structure and the micro motor
The electrical connection of negative input port.
The micro motor 20 is set to the tail end of the shell 11 and connect with the end of the push rod 13, the external thread sleeve 30 with
The shaft of the micro motor 20 connects；The external thread sleeve 30 is connect with 40 spiral of inner screw sheath so that it can be along the internal screw thread
The axial screw of set 40 is advanced or is retreated, so that the push rod 13 be driven to be advanced axially relative or retreat.The tail of the inner screw sheath
End is additionally provided with a pressure sensor, and the pressure sensor is electrically connected with the control chip, and the control chip is used for root
The micro motor revolving speed is controlled according to the pressure value of pressure sensor detection, to control liquid assimilating speed or discharge
Speed.
In the present embodiment, the end of the micro motor 20 is circumferentially flexibly connected with the end of the push rod 13, and axial solid
Fixed, the end of the micro motor 20 and the shell 11 are circumferentially fixed.For example, limit can be arranged on the end cap of the shell 11
Accordingly retention bead is arranged on the end of the micro motor 20 in hole.The retention bead is plugged in the limit hole.
The position for closing on end of micro motor 20 is provided with accommodating chamber 21 and is provided with and the accommodating chamber 21 in the end
The through-hole of connection is provided with a rotatably round connecting plate 22 in the accommodating chamber 21, offers one at the axis of the connecting plate
Irregularly-shaped hole, the end of the push rod 13 pass through the through-hole and cross win with the irregularly-shaped hole on the connecting plate 22 and be cooperatively connected.And the connection
The diameter of plate 22 is greater than the diameter of the through-hole.
The control chip 60 includes control circuit and power supply, which can be battery.
In some embodiments, it further includes circuit board, range sensor 80 and input note which, which takes pipe,
The voice input module 90 of the amount of penetrating or extraction amount.Range sensor 80 can be distance detection sensor, such as photoinduction passes
Sensor.Voice input module 90 includes microphone, voice recognition chip and audio frequency processing circuit.
The injection volume or extraction meter that the control chip is used to be inputted according to the voice input module calculate the push rod need
Then the distance perhaps retreated of advancing calculates the rotation angle of the micro motor according to the distance of the advance or retrogressing
Value, and control the micro motor and rotate corresponding angle towards corresponding direction.
Miniature LCD display is additionally provided on the side wall of the inner screw sheath for showing current extraction or being injected into
Degree, the miniature LCD display are electrically connected with the control chip.
The range sensor 80 is used to detect the distance between the end of the external thread sleeve Yu the inner screw sheath, which passes
Sensor is connect with the control chip communication.The circuit board is set on the end of the inner screw sheath, which is set to this
The inside of circuit board.The voice input module is set to the outside of the circuit board and connect with the control chip communication.
The present invention realizes the control of the forward or backward distance of the push rod by the control chip and micro motor, from
And quantitative extraction liquid or calibrated shot liquid may be implemented.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (7)
1. a kind of high-precision liquid takes pipe, which is characterized in that including control chip, injection tube assembly, micro motor, external screw thread
Set, inner screw sheath and range sensor；
The push rod that the injection tube assembly includes shell, is set to the intracorporal piston of shell and connect with piston, the tail of the shell
It holds and is detachably connected with the first end of the inner screw sheath, which is set to the tail end of the shell and the end with the push rod
Connection, the external thread sleeve are connect with the shaft of the micro motor；
The external thread sleeve connect with the inner screw sheath spiral so that its can along the axial screw of the inner screw sheath advance or after
It moves back, so that the push rod be driven to be advanced axially relative or retreat, which is set to separate injection tube assembly of inner screw sheath
One end and be electrically connected with the micro motor with the rotation angle for controlling the motor, which is set to the interior spiral shell
One end far from the injection tube assembly of line set and the inside for being located at inner screw sheath, the range sensor is for detecting the external screw thread
The distance between the end of set and the inner screw sheath, the range sensor are connect with the control chip communication；
The tail end of the inner screw sheath is additionally provided with a pressure sensor, and the pressure sensor is electrically connected with the control chip
It connects, the pressure value that the control chip is used to be detected according to the pressure sensor controls the micro motor revolving speed, to control
Liquid assimilating speed or the velocity of discharge processed.
2. high-precision liquid according to claim 1 takes pipe, which is characterized in that further include one for input injection volume or
The voice input module of person's extraction amount, the voice input module are set to the outside of the circuit board and connect with the control chip communication
It connects；
Before the injection volume or extraction meter that the control chip is used to be inputted according to the voice input module calculate push rod needs
The rotation angle value of the micro motor is then calculated according to the distance of the advance or retrogressing into the distance perhaps retreated, and
It controls the micro motor and rotates corresponding angle towards corresponding direction；
Miniature LCD display is additionally provided on the side wall of the inner screw sheath with for showing current extraction or injection progress,
The miniature LCD display is electrically connected with the control chip.
3. high-precision liquid according to claim 1 takes pipe, which is characterized in that further include a circuit board, the circuit board
It is set on the end of the inner screw sheath, which is set to the inside of the circuit board.
4. high-precision liquid according to claim 3 takes pipe, which is characterized in that further include a metal screw, the shell
Body is detachably connected by the metal screw and inner screw sheath realization, is provided with first on the outer wall of the external thread sleeve
Conductive metal layer is provided with the second conductive metal layer, the internal thread structure of the inner screw sheath on the side wall and tail end of the shell
For conductive metal, the external thread structure of the external thread sleeve is conductive metal；
One positive output port of the control chip passes sequentially through first conductive metal layer, the second conductive metal layer and this is miniature
One positive input port of motor is electrically connected；
One negative output port of the control chip passes sequentially through the one of the internal thread structure, external thread structure and the micro motor
The electrical connection of negative input port.
5. high-precision liquid according to claim 4 takes pipe, which is characterized in that the end of the micro motor is pushed away with this
The end of bar is circumferentially flexibly connected, and axial restraint, the end of the micro motor and the shell are circumferentially fixed.
6. high-precision liquid according to claim 5 takes pipe, which is characterized in that the position for closing on end of micro motor
It is provided with accommodating chamber and is provided with the through-hole being connected to the accommodating chamber in the end, be provided with one in the accommodating chamber and rotatably justify
Shape connecting plate, offers an irregularly-shaped hole at the axis of the connecting plate, the end of the push rod pass through the through-hole and on the connecting plate
Irregularly-shaped hole cross win be cooperatively connected.
7. high-precision liquid according to claim 6 takes pipe, which is characterized in that be provided with limit on the tail end of the shell
The end of protrusion, the micro motor is provided with limiting groove, which is plugged in the limiting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212544.9A CN109453829A (en) | 2018-10-18 | 2018-10-18 | High-precision liquid takes pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212544.9A CN109453829A (en) | 2018-10-18 | 2018-10-18 | High-precision liquid takes pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109453829A true CN109453829A (en) | 2019-03-12 |
Family
ID=65607827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811212544.9A Withdrawn CN109453829A (en) | 2018-10-18 | 2018-10-18 | High-precision liquid takes pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109453829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024050912A1 (en) * | 2022-09-08 | 2024-03-14 | 长鑫存储技术有限公司 | Apparatus and method for extracting electron microscope sample |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648877A (en) * | 2012-04-25 | 2012-08-29 | 中国人民解放军第四军医大学 | Digital adjustable microinjection method |
| CN204170206U (en) * | 2014-05-06 | 2015-02-25 | 深圳市尚荣医疗股份有限公司 | Closed high precision micro syringe pump |
| CN104436372A (en) * | 2014-11-20 | 2015-03-25 | 李华 | Micro-injection control system and method |
| CN205019518U (en) * | 2015-09-30 | 2016-02-10 | 王竞 | Syringe pump |
-
2018
- 2018-10-18 CN CN201811212544.9A patent/CN109453829A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648877A (en) * | 2012-04-25 | 2012-08-29 | 中国人民解放军第四军医大学 | Digital adjustable microinjection method |
| CN204170206U (en) * | 2014-05-06 | 2015-02-25 | 深圳市尚荣医疗股份有限公司 | Closed high precision micro syringe pump |
| CN104436372A (en) * | 2014-11-20 | 2015-03-25 | 李华 | Micro-injection control system and method |
| CN205019518U (en) * | 2015-09-30 | 2016-02-10 | 王竞 | Syringe pump |
Non-Patent Citations (2)
| Title |
|---|
| 朱珍民 隋雪青 段斌编著: "《嵌入式实时操作系统及其应用开发》", 31 December 2006, 北京邮电大学出版社 * |
| 钱炜 施小明 朱坚民主编: "《第一届上海市大学生机械工程创新大赛获奖案例精选》", 30 October 2013, 华中科技大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024050912A1 (en) * | 2022-09-08 | 2024-03-14 | 长鑫存储技术有限公司 | Apparatus and method for extracting electron microscope sample |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190312 |
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| WW01 | Invention patent application withdrawn after publication |