CN208407033U - automatic pipetting device - Google Patents
automatic pipetting device Download PDFInfo
- Publication number
- CN208407033U CN208407033U CN201820241183.XU CN201820241183U CN208407033U CN 208407033 U CN208407033 U CN 208407033U CN 201820241183 U CN201820241183 U CN 201820241183U CN 208407033 U CN208407033 U CN 208407033U
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- China
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- liquid relief
- piston rod
- casing
- pipetting device
- automatic pipetting
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Abstract
The utility model relates to a kind of automatic pipetting devices, including transmission parts, the piston rod for connecting transmission parts, liquid relief component, the end face fixing piece and inductive component for connecting liquid relief component；Liquid relief component includes liquid relief casing and the pipetting tip for connecting liquid relief casing, and piston rod is arranged in liquid relief casing；End face fixing piece is equipped with the first threaded hole, and liquid relief casing is installed on first threaded hole one end；Installation is equipped with seal assembly in first threaded hole, and seal assembly is to improve the cooperation leakproofness between piston rod and liquid relief casing；Inductive component is for carrying out limit processing to the piston rod.The automatic pipetting device of the utility model can be by the effect of transmission parts and sensing device, to reach accurate imbibition and hydrojet processing；Meanwhile the automatic pipetting device is additionally provided with seal assembly and cooperates leakproofness between piston rod and liquid relief sleeve to improve, to reduce operating error and improve the precision of work.
Description
Technical field
The utility model relates to biomedical devices technical fields, more particularly to a kind of automatic pipetting device.
Background technique
Liquid-transfering device is widely applied in Biochemical Research laboratory, hospital and drugmaker, can be used for sample pre-treatments, sample
Purifying is operated with amplification, sample dilution and the sample treatments such as concentration, sample preparation.All the time, biomedical worker is
The addition for carrying out various solution to microwell plate by piston type charger, due to manual operation, the amount of addition is relatively difficult to hold,
There is a problem of that low efficiency and fault rate are high.
It is directed to technical problem brought by artificial progress pipetting, occurs achievable automatic operation on the market
Liquid-transfering device, but the liquid-transfering device has that structure is complicated and liquid relief amount inaccuracy, to affect the number of experiment
According to and reduce working efficiency.
Utility model content
Based on this, it is necessary to which, for the technical problem of the liquid relief amount inaccuracy of existing liquid-transfering device, providing one kind can
Improve the automatic pipetting device of liquid relief precision.
In order to realize the purpose of this utility model, the utility model uses following technical scheme:
A kind of automatic pipetting device, including transmission parts, the piston rod of the connection transmission parts, liquid relief component, connection
The end face fixing piece and inductive component of the liquid relief component；The liquid relief component includes liquid relief casing and the connection liquid relief set
The pipetting tip of pipe, the piston rod are arranged in the liquid relief casing；The end face fixing piece is equipped with the first threaded hole, described
Liquid relief casing is installed on one end of first threaded hole；Seal assembly is installed in first threaded hole, described in improving
Cooperation leakproofness between piston rod and the liquid relief casing；The inductive component include connect the piston rod sensing chip and
Photoelectric sensor.
It is past that the automatic pipetting device of the utility model drives the piston rod to carry out straight line by the effect of transmission parts
Multiple movement, and by setting sensing device to detect the displacement of piston rod, to reach accurate imbibition and hydrojet processing；Together
When, which is additionally provided with seal assembly and cooperates leakproofness between piston rod and liquid relief sleeve to improve, to reduce
Operating error and the precision for improving work.
In one of the embodiments, the seal assembly include the O-ring seal successively abutted, plain seal circle, pressing plate,
Compressed spring and end face locking nut；The end face locking nut is connected to the other end of first threaded hole.
The compressed spring is in compressive state in one of the embodiments, and the compressed spring is used for the pressure
Plate provides pressure so that the O-ring seal and the plain seal circle closely connect and be posted by the liquid relief casing and the work
Stopper rod.
The liquid relief casing is equipped with bulge loop far from the lateral ends of the end face fixing piece in one of the embodiments,
The inner opposite end of the pipetting tip is equipped with the groove of the corresponding bulge loop, and the pipetting tip can the company of being arranged under external force
It is connected to the liquid relief casing.
In one of the embodiments, further include de- head assembly, the de- head assembly include two vertical bars being oppositely arranged and
Connect two cross bars of the opposite end of the vertical bar；The de- head assembly is to carry out disengaging processing to the pipetting tip.
The end face fixing piece is equipped with the second threaded hole in one of the embodiments, and second threaded hole distinguishes position
In the opposite end of first threaded hole；Screw thread copper sheathing is installed, the vertical bar is arranged in respectively in second threaded hole
The screw thread copper sheathing；One cross bar is equipped with through-hole wearing for the piston rod, the cross bar and the end face fixing piece
Between be equipped with reset spring；Another cross bar is equipped with through-hole wearing for the liquid relief casing, and the cross bar is located at described
The top of pipetting tip.
The transmission parts connect the piston rod, the pinboard by a pinboard in one of the embodiments,
For iron-nickel alloy material.
The piston rod includes the extension of protrusion and the connection protrusion in one of the embodiments, described
The inside of protrusion is equipped with magnetic part, and the protrusion magnetism is connected to the pinboard, and the extension is arranged in described
In liquid relief casing.
The sensing chip connects the piston rod, the photoelectric transfer by the pinboard in one of the embodiments,
Sensor corresponds to the sensing chip, and the photoelectric sensor is to detect the change in displacement of sensing chip to realize to the piston rod
Limit processing.
The transmission parts are lead screw motor in one of the embodiments,.
Detailed description of the invention
Fig. 1 is the schematic diagram of the automatic pipetting device of one better embodiment of the utility model；
Fig. 2 is another angle schematic diagram of the automatic pipetting device of Fig. 1；
Fig. 3 is the cross-sectional view of the automatic pipetting device of Fig. 2；
Fig. 4 is the enlarged diagram of the circle part A of Fig. 3.
Drawing reference numeral explanation:
100, automatic pipetting device；
10, transmission parts, 11, screw rod；
20, piston rod, 21, protrusion, 22, extension, 23, magnetic part；
30, liquid relief component, 31, liquid relief casing, 32, pipetting tip；
40, end face fixing piece, 41, seal assembly, 411, O-ring seal, 412, plain seal circle, 413, pressing plate, 414, pressure
Contracting spring, 415, end face locking nut, 42, screw thread copper sheathing；
50, head assembly, 51, vertical bar, 52, cross bar, 53, reset spring are taken off；
61, sensing chip；
70, pinboard.
Specific embodiment
The utility model will be described more fully below for the ease of understanding the utility model,.But this is practical
It is novel to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, providing these implementations
The purpose of example is to make the understanding of the disclosure of the utility model more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
It is referring to FIG. 1 to FIG. 4, the automatic pipetting device 100 of one better embodiment of the utility model, including driving section
Part 10, the piston rod 20 for connecting transmission parts 10, liquid relief component 30, the end face fixing piece 40 for connecting liquid relief component 30, connecting pin
The de- head assembly 50 and inductive component of face fixing piece 40, piston rod 20 are installed in liquid relief component 30；Wherein, transmission parts 10
The piston rod 20 is connected by a pinboard 70；Inductive component is to carry out limit processing to piston rod 20 to realize accurate suction
Liquid or hydrojet processing.Automatic pipetting device 100 is single channel liquid relief structure.
Transmission parts 10 are linear electric machine, and the transmission parts 10 are to be directly changed into linear motion mechanical energy for electric energy.
Transmission parts 10 are lead screw motor in the present embodiment, have good accuracy；It is to be understood that in other embodiments
In, transmission parts 10 can also be other linear electric machines with good accuracy.Wherein, the screw rod 11 of transmission parts 10 is logical
It crosses thread connecting mode and connects the pinboard 70.Further, which is iron-nickel alloy material, the iron-nickel alloy material
Material is a kind of low frequency soft magnetic materials in low-intensity magnetic field with high magnetic permeability and low-coercivity.
Piston rod 20 includes protrusion 21 and the extension 22 for connecting protrusion 21；Wherein, the inside installation of protrusion 21
Equipped with magnetic part 23；The setting cylindrical of extension 22.In the present embodiment, magnetic part 23 is permanent magnet.Meanwhile protrusion
21 are connected to one end of the pinboard 70 by magnetism.
Liquid relief component 30 includes liquid relief casing 31 and the pipetting tip 32 for connecting liquid relief casing 31；Wherein, liquid relief casing 31
In hollow setting, the inside of the liquid relief casing 31 wears placement with the extension 22 for piston rod 20.Meanwhile liquid relief casing
31 outer wall is equipped with external screw thread, and the externally threaded outer wall is to connect the end face fixing piece 40；Liquid relief casing 31 is far from described
The lateral ends of end face fixing piece 40 are equipped with bulge loop (figure is not marked)；The inner opposite end of pipetting tip 32 is equipped with the corresponding bulge loop
Groove, and the groove of pipetting tip 32 can be arranged the bulge loop for being connected to liquid relief casing 31 under certain external force and be formed closed
Cooperation.
Fig. 3 and Fig. 4 is please referred to, end face fixing piece 40 connects liquid relief component 30.End face fixing piece 40 is equipped with the first threaded hole
And second threaded hole, the quantity of second threaded hole are two and are located at the opposite sides of the first threaded hole；Meanwhile first
Threaded hole and the second threaded hole are through end face fixing piece 40.Outer spiral shell of the one end of first threaded hole for liquid relief casing 31
The connection of line one end, and seal assembly 41 is also equipped in the first threaded hole, the seal assembly 41 is to improve piston rod 20 and move
Cooperation leakproofness between liquid casing 31, so that it is guaranteed that the straight reciprocating motion of piston rod 20 can reach the effect of imbibition or hydrojet
Fruit.Further, seal assembly 41 includes the O-ring seal 411 successively abutted, plain seal circle 412, pressing plate 413, compressed spring
414 and end face locking nut 415；Wherein, end face locking nut 415 is hex nut in the present embodiment, and the end face is locked
Nut 415 is connected through a screw thread the other end that mode is connected to the first threaded hole, and miniature spanner can be used to be dismounted and replaced；
Meanwhile compressed spring 414 should be at compressive state to provide corresponding pressure to pressing plate 413, thus make O-ring seal 411 and
Plain seal circle 412 closely connects and is posted by the extension 22 of liquid relief casing 31 and piston rod 20, it is ensured that cooperation leakproofness and
Prevent introduced contaminants or air from entering liquid relief casing 31.The installation of second threaded hole is equipped with screw thread copper sheathing 42, the screw thread copper sheathing 42
The mode of being connected through a screw thread is installed in the second threaded hole；Further, which being worn with for taking off head assembly 50
If placing.
De- 50 connecting end surface fixing piece 40 of head assembly.De- head assembly 50 includes two vertical bars 51 being oppositely arranged and connection vertical bar
Two cross bars 52 of 51 opposite end；In the present embodiment, two cross bars 52 are connected by screw in two vertical bars 51.Meanwhile vertical bar
51 are arranged in the screw thread copper sheathing 42 respectively；One cross bar 52 is equipped with through-hole with wearing for piston rod 20, and the cross bar 52 with
Reset spring 53 is equipped between the end face fixing piece 40, further, reset spring 53 is connected to cross bar 52 and end face locking
Nut 415, the reset spring 53 carry out reset processing after processing with so that de- head assembly 50 fall off to pipetting tip 32；
Another cross bar 52 is equipped with through-hole with wearing for liquid relief casing 31, and the cross bar 52 is located at the top of pipetting tip 32.It can be with
It is interpreted as, de- head assembly 50 can be reclined by the effect of transmission parts 10 pipetting tip 32 and to be detached from pipetting tip 32
Processing.
Inductive component includes sensing chip 61 and photoelectric sensor (not shown).Wherein, sensing chip 61 is connected to pinboard 70；
Photoelectric sensor corresponds to the setting of sensing chip 61 and the change in displacement to detect sensing chip 61, thus to automatic pipetting device 100
The moving range of piston rod 20 carry out limit processing, it is ensured that each liquid relief or the accuracy of hydrojet processing.
It should be noted that automatic pipetting device 100 is connected to a mobile device (not shown)；Further, automatic to move
The end face fixing piece 40 of liquid device 100 is connected to the mobile device.The mobile device can consolidate end face fixing piece 40
Determine support processing, and automatic pipetting device 100 can be made to carry out whole straight line and moved up and down.Meanwhile automatic pipetting device
100 can also realize installing or the processing that falls off automatically to pipetting tip 32, and labor intensity and raising working efficiency is effectively reduced.
The piston rod 20 and pinboard 70 of automatic pipetting device 100 are connected using magnetism, and other components are all made of threaded connection, from
And the characteristics of playing easy disassembly and maintenance, improve production efficiency.
It, will by control mobile device when needing the pipetting tip 32 to automatic pipetting device 100 to carry out installation process
Automatic pipetting device 100 move to above the position of the pipetting tip 32 placed and make automatic pipetting device 100 into
Row moves downward, and needs to control the move distance of automatic pipetting device 100, so that pipetting tip 32 be made to pack into liquid relief casing
In 31 and the bulge loop on 31 outer wall of liquid relief casing is climbed over, the corresponding spacing place of liquid relief casing 31 is finally reached, finally realizes shifting
The automatic installation process of liquid suction nozzle 32.When needing to carry out automatic pipetting device 100 imbibition processing or hydrojet is handled, pass through biography
The effect of dynamic component 10 is so that piston rod 20 is moved upwards or moved downward accordingly in liquid relief casing 31, to realize
Imbibition processing or hydrojet processing.When needing to carry out pipetting tip 32 after hydrojet to be detached from processing, pass through transmission parts 10
Effect so that piston rod 20 continues to move downward, promote the protrusion 21 of piston rod 20 to be posted by de- head assembly 50 and push de-
Head assembly 50 is moved downward, so that a cross bar 52 of de- head assembly 50 be made to recline and release pipetting tip 32, is finally realized
The disengaging processing of pipetting tip 32；Meanwhile after pipetting tip 32 falls off, control transmission parts 10 are moved upwards, by
In resetting so that de- head assembly 50 is restored to original position for reset spring 53.
The automatic pipetting device of the utility model can reach imbibition and hydrojet processing by automation control, and this is automatic
Liquid-transfering device is additionally provided with seal assembly and cooperates leakproofness between piston rod and liquid relief sleeve to improve, thus reduce operating error and
Improve the precision of work；Meanwhile automatic pipetting device can also be achieved automatic installation or replacement pipetting tip, reduce labor intensity
With improve work efficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of automatic pipetting device, it is characterised in that: including transmission parts, the piston rod of the connection transmission parts, liquid relief
The end face fixing piece and inductive component of component, the connection liquid relief component；The liquid relief component includes liquid relief casing and connection institute
The pipetting tip of liquid relief casing is stated, the piston rod is arranged in the liquid relief casing；The end face fixing piece is equipped with the first spiral shell
Pit, the liquid relief casing are installed on one end of first threaded hole；Seal assembly is installed in first threaded hole, with
Improve the cooperation leakproofness between the piston rod and the liquid relief casing；The inductive component includes connecting the piston rod
Sensing chip and photoelectric sensor.
2. automatic pipetting device according to claim 1, it is characterised in that: the seal assembly includes the O successively abutted
Type sealing ring, plain seal circle, pressing plate, compressed spring and end face locking nut；The end face locking nut is connected to described first
The other end of threaded hole.
3. automatic pipetting device according to claim 2, it is characterised in that: the compressed spring is in compressive state, institute
Compressed spring is stated for providing pressure so that the O-ring seal and the plain seal circle are closely connected and reclined to the pressing plate
In the liquid relief casing and the piston rod.
4. automatic pipetting device according to claim 1, it is characterised in that: the liquid relief casing is fixed far from the end face
The lateral ends of part are equipped with bulge loop, and the inner opposite end of the pipetting tip is equipped with the groove of the corresponding bulge loop, and the liquid relief is inhaled
Head can be arranged under external force is connected to the liquid relief casing.
5. automatic pipetting device according to claim 1, it is characterised in that: further include de- head assembly, the de- head assembly
Two cross bars of the opposite end of the vertical bar and the connection vertical bar that are oppositely arranged including two；The de- head assembly is to the shifting
Liquid suction nozzle carries out disengaging processing.
6. automatic pipetting device according to claim 5, it is characterised in that: the end face fixing piece is equipped with the second screw thread
Hole, second threaded hole are located at the opposite end of first threaded hole；Screw thread is installed in second threaded hole
Copper sheathing, the vertical bar are arranged in the screw thread copper sheathing respectively；One cross bar is equipped with through-hole wearing for the piston rod, institute
It states and is equipped with reset spring between cross bar and the end face fixing piece；Another cross bar is equipped with through-hole for the liquid relief casing
It wears, the cross bar is located at the top of the pipetting tip.
7. automatic pipetting device according to claim 1, it is characterised in that: the transmission parts are connected by a pinboard
The piston rod, the pinboard are iron-nickel alloy material.
8. automatic pipetting device according to claim 7, it is characterised in that: the piston rod includes protrusion and connection institute
The extension of protrusion is stated, the inside of the protrusion is equipped with magnetic part, and the protrusion magnetism is connected to the pinboard,
The extension is arranged in the liquid relief casing.
9. automatic pipetting device according to claim 8, it is characterised in that: the sensing chip is connected by the pinboard
The piston rod, the photoelectric sensor correspond to the sensing chip, and the photoelectric sensor becomes to detect the displacement of sensing chip
Change to realize that the limit to the piston rod is handled.
10. automatic pipetting device according to claim 1, it is characterised in that: the transmission parts are lead screw motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820241183.XU CN208407033U (en) | 2018-02-08 | 2018-02-08 | automatic pipetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820241183.XU CN208407033U (en) | 2018-02-08 | 2018-02-08 | automatic pipetting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208407033U true CN208407033U (en) | 2019-01-22 |
Family
ID=65120569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820241183.XU Active CN208407033U (en) | 2018-02-08 | 2018-02-08 | automatic pipetting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208407033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187772A (en) * | 2018-02-08 | 2018-06-22 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Automatic pipetting device |
| CN110057624A (en) * | 2019-04-28 | 2019-07-26 | 深圳市万臣科技有限公司 | A kind of air pump |
| CN111167532A (en) * | 2020-01-10 | 2020-05-19 | 济南翼菲自动化科技有限公司 | Automatic device for biological test liquid transfer |
-
2018
- 2018-02-08 CN CN201820241183.XU patent/CN208407033U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187772A (en) * | 2018-02-08 | 2018-06-22 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Automatic pipetting device |
| CN110057624A (en) * | 2019-04-28 | 2019-07-26 | 深圳市万臣科技有限公司 | A kind of air pump |
| CN110057624B (en) * | 2019-04-28 | 2024-04-05 | 深圳市大肯科技有限公司 | Air pump |
| CN111167532A (en) * | 2020-01-10 | 2020-05-19 | 济南翼菲自动化科技有限公司 | Automatic device for biological test liquid transfer |
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