CN104279146B - Liquid sucking and discharging device - Google Patents

Liquid sucking and discharging device Download PDF

Info

Publication number
CN104279146B
CN104279146B CN201310271124.9A CN201310271124A CN104279146B CN 104279146 B CN104279146 B CN 104279146B CN 201310271124 A CN201310271124 A CN 201310271124A CN 104279146 B CN104279146 B CN 104279146B
Authority
CN
China
Prior art keywords
pump housing
liquid
chamber
sucking
suction nozzle
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.)
Expired - Fee Related
Application number
CN201310271124.9A
Other languages
Chinese (zh)
Other versions
CN104279146A (en
Inventor
张东
宋瑞军
刘劲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biotech development (Suzhou) Limited
Original Assignee
Suzhou Biological Polytron Technologies Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Biological Polytron Technologies Inc filed Critical Suzhou Biological Polytron Technologies Inc
Priority to CN201310271124.9A priority Critical patent/CN104279146B/en
Publication of CN104279146A publication Critical patent/CN104279146A/en
Application granted granted Critical
Publication of CN104279146B publication Critical patent/CN104279146B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a liquid sucking and discharging device. The liquid sucking and discharging device comprises at least one liquid sucking and discharging assembly. Each liquid sucking and discharging assembly comprises a pump body, a pump cavity, a rubber sealing pad, a driving mechanism and a sucking head ejection rod, wherein the pump cavity is connected to the lower end of the pump body and is provided with a longitudinally through cavity, the rubber sealing pad is arranged between the pump body and the pump cavity, a compression spring abuts against the lower surface of the rubber sealing pad, the driving mechanism is arranged at the upper end of the pump body and is provided with a telescopic rod capable of controlling the telescopic amount, the telescopic rod can abut against the rubber sealing pad in a retracted mode, the sucking head ejection rod is provided with an airflow passage, the upper end of the sucking head ejection rod is connected with the lower end of the pump cavity, the airflow passage is communicated with the cavity, and the lower end of the sucking head ejection rod is connected with a sucking head. The telescopic rod is matched with the compression spring, so that the volume of the pump cavity is changed and the function of liquid sucking and discharging is achieved. Besides, zero-position control of the pump cavity can be achieved, and the phenomenon of blockage caused by operating control faults is avoided. The liquid sucking and discharging device has the advantages of being simple in structure, low in cost, high in liquid distribution accuracy, and convenient to maintain and operate.

Description

A kind of liquid sucking-exhausting device
Technical field
The present invention relates to a kind of medicine equipment, laboratory equipment, specifically one kind are used for biomedicine, laboratory etc. It is used for carrying out the liquid sucking-exhausting device of micro liquid distribution, suction-discharge.
Background technology
At present, it will usually be related to the process of micro liquid in many analysis laboratory apparatus, including extracting, be loaded, join Liquid etc. operates.In aforesaid operations, mostly using being made up of tubule, sample needle, valve, plunger displacement pump or membrane pump, peristaltic pump etc. Liquid-way system.But existing liquid-way system structure composition is more complicated, affect liquid assignment accuracy, and then experiment accuracy is produced Different degrees of interference.At home and abroad be similar on semi-automatic or full-automatic instrument, mostly adopt above-mentioned liquid-way system, configuration Corresponding software and driver, thus results in high cost, complex structure, is not easy to the defects such as maintenance and operation.
The shortcoming existing in view of above-mentioned prior art, the present inventor is based on and is engaged in association area research and live warp for many years Test and professional knowledge, actively improved and innovate, to realizing that a kind of structure is simple, liquid assignment accuracy height, low cost, just Liquid sucking-exhausting device in maintenance and operation.
Content of the invention
It is an object of the invention to provide a kind of structure is simple, liquid assignment accuracy height, low cost, be easy to maintenance and operation Liquid sucking-exhausting device.
For reaching above-mentioned purpose, the present invention proposes a kind of liquid sucking-exhausting device, and described liquid sucking-exhausting device is by least one Liquid suction assembly is constituted, and each described liquid suction assembly includes:The pump housing, has longitudinally through chamber;Pump housing, is connected to institute State the lower end of the pump housing, described pump housing has longitudinally through chamber, and described chamber is with described lumen therethrough relative to position;Rubber seal Pad, is arranged between the described pump housing and described pump housing, described lumen therethrough is divided by described rubber gasket phase with described chamber Every being provided with described stage clip in described within the chamber, described stage clip is resisted against the lower surface of described rubber gasket;Drive mechanism, if It is placed in described pump housing upper end, described drive mechanism has the expansion link that can control stroke, and described expansion link is via described insertion Chamber can press on the upper surface of described rubber gasket with bouncing back;Suction nozzle push rod and suction nozzle, described suction nozzle push rod has longitudinal passing through Logical gas channel, the upper end of described suction nozzle push rod is connected with the lower end of described pump housing, and described gas channel with described Chamber is connected, and the lower end of described suction nozzle push rod connects described suction nozzle.
Liquid sucking-exhausting device as above, wherein, described liquid suction assembly also includes light sensation position-limit mechanism, described light Sense position-limit mechanism includes:Optoelectronic switch, is arranged on the outside of the described pump housing, and is electrically connected with described drive mechanism, described light The horizontal slotted eye that the induction end of electric switch passes through to open up on the described pump housing is directed at the expansion link in described lumen therethrough, spacing is in the light Block, is arranged on the end of described expansion link, described spacing light-blocking block and described expansion link synchronous shift;Described optoelectronic switch passes through Sense the drive mechanism stop described in Bit andits control of described spacing light-blocking block.
Liquid sucking-exhausting device as above, wherein, comes directly towards equipped with rubber cushion in the termination outer cover of described expansion link.
Liquid sucking-exhausting device as above, wherein, described drive mechanism is linear electric motors.
Liquid sucking-exhausting device as above, wherein, described liquid sucking-exhausting device includes multiple institutes of continuous setting side by side State liquid suction assembly.
Compared with prior art, the invention has the characteristics that and advantage:
1st, the present invention passes through that linear electric motors expansion link is controlled stretches out or retract, with pushing tow rubber gasket, and with stage clip phase Cooperation, thus changing the volume in pump chamber, to change the pressure size of within the chamber, and then reaches the function of suction liquid.
2nd, the present invention passes through to arrange spacing light-blocking block on expansion link, and matches with the optoelectronic switch outside the pump housing, full The zero-location control of sufficient pump chamber, it is to avoid operational control error causes stuck phenomenon.
3rd, compared with the hydraulic pump of the similar functions such as existing plunger displacement pump, membrane pump, present configuration is simple, low cost, Liquid assignment accuracy is high, be easy to maintenance and operation, realizes the suction to micro liquid and operates it is adaptable to need submicroliter fluid handling Laboratory analytical instrument.
Brief description
Accompanying drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention by any way Enclose.In addition, the shape of each part of in figure and proportional sizes etc. are only schematically, it is used to help the understanding of the present invention, and It is not shape and the proportional sizes specifically limiting each part of the present invention.Those skilled in the art under the teachings of the present invention, can To select various possible shapes and proportional sizes to implement the present invention as the case may be.
Fig. 1 is the cross-sectional view of fluid present invention sucking-exhausting device.
Description of reference numerals:
1- drive mechanism (linear electric motors);11- expansion link;12- rubber cushion comes directly towards;The 2- pump housing;21- lumen therethrough;22- transverse groove Hole;3- pump housing;31- chamber;4- suction nozzle push rod;41- gas channel;5- suction nozzle;6- rubber gasket;7- stage clip;8- photoelectricity Switch;The spacing light-blocking block of 9-.
Specific embodiment
In conjunction with the description of accompanying drawing and the specific embodiment of the invention, can clearly understand the details of the present invention.But It is, the specific embodiment of invention described herein to be only used for explaining the purpose of the present invention, and can not understand by any way One-tenth is limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrarily possible change based on the present invention Shape, these are regarded as belonging to the scope of the present invention.
Refer to Fig. 1, be the cross-sectional view of fluid present invention sucking-exhausting device.As illustrated, it is proposed by the present invention Liquid sucking-exhausting device, is made up of at least one liquid suction assembly, and each liquid suction assembly includes from top to bottom setting gradually Drive mechanism 1, the pump housing 2, pump housing 3, suction nozzle push rod 4 and suction nozzle 5, wherein, the pump housing 2 has longitudinally through chamber 21, for holding Put drive mechanism 1;Pump housing 3 is connected to the lower end of the pump housing 2, and pump housing 3 has longitudinally through chamber 31, this chamber 31 conduct The pump chamber of suction nozzle 5 suction liquid, concrete attachment structure and the course of work is driven to will be explained below.Chamber 31 and insertion Chamber 21 position relatively, that is, the upper port of chamber 31 is corresponding to the lower port of lumen therethrough 21.It is provided with rubber between the pump housing 2 and pump housing 3 Glue sealing gasket 6, lumen therethrough 21 is separated by rubber gasket 6 with chamber 31, forms upper and lower two mutually airtight chambers. It is provided with stage clip 7 in chamber 31, the bottom of chamber 31 is fixed in one end of this stage clip 7, its other end is resisted against rubber gasket 6 Lower surface.Suction nozzle push rod 4 has longitudinally through gas channel 41, and the upper end of suction nozzle push rod 4 is connected with the lower end of pump housing 3 Connect, and gas channel 41 is connected with chamber 31, the lower end of suction nozzle push rod 4 connects suction nozzle 5.So make inner chamber, the gas of suction nozzle 5 The chamber 31 of circulation road 41 and pump housing 3 constitutes the passage of up/down perforation, and liquid is aspirated by this passage and discharges.And make Drive mechanism 1 for being aspirated and being discharged operation power source is arranged at the pump housing 2 upper end, and drive mechanism 1 has to control stretches The expansion link 11 of amount, expansion link 11 stretches in lumen therethrough 21 and presses on rubber gasket 6, and rubber gasket 6 is pressed And compression press spring 7.The present invention stretches out or retracts by expansion link 11 is controlled, and chamber 31 volume of pump housing 3 is become Change, and then change the pressure size in chamber 31, and then reach the function of suction liquid, have that structure is simple, low cost, liquid Assignment accuracy is high, the effects such as be easy to maintenance and operation.
In order to improve liquid assignment accuracy further, liquid suction assembly also includes stretching for precise control expansion link 11 The light sensation position-limit mechanism of amount, as shown in figure 1, this light sensation position-limit mechanism includes optoelectronic switch 8 and spacing light-blocking block 9, optoelectronic switch 8 It is arranged on the outside of the pump housing 2, and is electrically connected with drive mechanism 1, brake signal can be transferred to drive mechanism by optoelectronic switch 8 1, to control unlatching and the stopping of drive mechanism 1.The horizontal slotted eye 22 that the induction end of optoelectronic switch 8 is passed through to open up on the pump housing 2 is right Expansion link 11 in quasi- lumen therethrough 21.Spacing light-blocking block 9 be arranged on expansion link 11 end so that spacing light-blocking block 9 with flexible Bar 11 synchronous shift.When expansion link 11 bounces back, spacing light-blocking block 9 is with the induction end institute moving to optoelectronic switch 8 on expansion link 11 Corresponding position, optoelectronic switch 8 is triggered, and induction end produces induced signal, and is converted into brake signal and is transferred to drive mechanism 1 so that the stop of drive mechanism 1, expansion link 11 stopping movement, and the stop position of this expansion link 11 is the maximum retraction of expansion link 11 Spacing, now the chamber 31 of pump housing 3 is in the maximum rating of volume, i.e. zero-bit in the presence of the elastic-restoring force of stage clip 7 State.So so that the present invention can meet the zero-location control of chamber 31, it is to avoid operational control error causes stuck phenomenon.
In order to rubber gasket 6 is played in expansion link 11 telescopic process with the effect of protection, in the termination of expansion link 11 Outer cover comes directly towards 12 equipped with rubber cushion.
In the present invention, drive mechanism 1 adopts linear electric motors.But the invention is not restricted to this, drive mechanism 1 can also adopt Other well known driving means, mainly disclosure satisfy that dimensional requirement, and have controllable telescoping rod.
In the present invention, liquid suction assembly can continuously be provided with multiple side by side, so can meet multiple liquid and inhale Row's assembly is applied, thus increasing service efficiency simultaneously.
When using, first, the extension bar 11 of linear electric motors 1 and rubber cushion top 12 act on rubber gasket 6 present invention, The stage clip 10 of rubber gasket 6 lower end overhead rubber gasket 6 upwards.By extension bar 11 downward pressure, stage clip 10 is pressed Tightly, the space of chamber 31 is extruded and diminishes, and then the termination of suction nozzle 5 is stretched to liquid to be pumped, subsequent start-up linear electric motors 1 so that extension bar 11 bounces back, chamber 31 in the presence of the elastic-restoring force of stage clip 10, its capacity expansion, formed in chamber 31 Negative pressure, so that liquid is sucked up in suction nozzle 5, reaches the function of imbibition.In extension bar 11 contraction process, extension bar 11 drives Move on spacing light-blocking block 9, until spacing light-blocking block 9 all shelters from the photosensitive end of optoelectronic switch 8, triggering optoelectronic switch 3 so that Linear electric motors 1 are out of service, and now chamber 31 is in the maximum rating of volume, i.e. zero-bit state.When needing to discharge liquid, directly Line motor 1 starts, and drives extension bar 11 to stretch out, and extension bar 11 pushes rubber gasket 6 and stage clip 10 again so that chamber 31 Space is extruded and diminishes and be pressurized, and the liquid in suction nozzle 5 is extruded suction nozzle 5, reaches the function of discharge opeing.
Explaining in detail for the respective embodiments described above, its purpose be only that the present invention is explained in order to be able to More fully understand the present invention, but, it is limitation of the present invention that these descriptions can not be become with any explanation, particularly, Each feature described in different embodiments can also mutually be combined, thus forming other embodiment, except having Specify contrary description, these features should be understood can be applied in any one embodiment, and is not limited merely to Described embodiment.

Claims (5)

1. a kind of liquid sucking-exhausting device is it is characterised in that described liquid sucking-exhausting device is made up of at least one liquid suction assembly, Each described liquid suction assembly includes:
The pump housing, has longitudinally through chamber;
Pump housing, is connected to the lower end of the described pump housing, and described pump housing has longitudinally through chamber, and described chamber is passed through with described Cavity is relative to position;
Rubber gasket, is arranged between the described pump housing and described pump housing, and described lumen therethrough passes through described rubber with described chamber Glue sealing gasket phase separates, and is provided with stage clip in described within the chamber, described stage clip is resisted against the lower surface of described rubber gasket;
Drive mechanism, is arranged at described pump housing upper end, and described drive mechanism has the expansion link that can control stroke, described flexible Bar can press on the upper surface of described rubber gasket via described lumen therethrough with bouncing back;
Suction nozzle push rod and suction nozzle, described suction nozzle push rod has longitudinally through gas channel, the upper end of described suction nozzle push rod and institute The lower end stating pump housing is connected, and described gas channel is connected with described chamber, and the lower end of described suction nozzle push rod connects institute State suction nozzle, the described chamber of the inner chamber of described suction nozzle, described gas channel and described pump housing constitutes the passage of up/down perforation, liquid Body is aspirated by described passage and is discharged.
2. liquid sucking-exhausting device as claimed in claim 1 it is characterised in that described liquid suction assembly also to include light sensation spacing Mechanism, described light sensation position-limit mechanism includes:
Optoelectronic switch, is arranged on the outside of the described pump housing, and is electrically connected with described drive mechanism, the sensing of described optoelectronic switch End is directed at the expansion link in described lumen therethrough by the horizontal slotted eye opening up on the described pump housing,
Spacing light-blocking block, is arranged on the end of described expansion link, described spacing light-blocking block and described expansion link synchronous shift;
Described optoelectronic switch passes through to sense the drive mechanism stop described in Bit andits control of described spacing light-blocking block.
3. liquid sucking-exhausting device as claimed in claim 1 it is characterised in that described expansion link termination outer cover equipped with glue Pad top.
4. liquid sucking-exhausting device as claimed in claim 1 is it is characterised in that described drive mechanism is linear electric motors.
5. the liquid sucking-exhausting device as any one of Claims 1-4 is it is characterised in that described liquid sucking-exhausting device bag Include the multiple described liquid suction assembly of continuous setting side by side.
CN201310271124.9A 2013-07-01 2013-07-01 Liquid sucking and discharging device Expired - Fee Related CN104279146B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310271124.9A CN104279146B (en) 2013-07-01 2013-07-01 Liquid sucking and discharging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310271124.9A CN104279146B (en) 2013-07-01 2013-07-01 Liquid sucking and discharging device

Publications (2)

Publication Number Publication Date
CN104279146A CN104279146A (en) 2015-01-14
CN104279146B true CN104279146B (en) 2017-02-22

Family

ID=52254382

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310271124.9A Expired - Fee Related CN104279146B (en) 2013-07-01 2013-07-01 Liquid sucking and discharging device

Country Status (1)

Country Link
CN (1) CN104279146B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065126A (en) * 1988-07-25 1991-11-12 Honda Giken Kogyo Kabushiki Kaisha Linear actuator
CN101063441A (en) * 2006-04-25 2007-10-31 上海凯实生物科技有限公司 Gas replacement type trace quantity micro sampling-fetching pump
CN101571119A (en) * 2009-05-25 2009-11-04 上海凯实生物科技有限公司 Micro sample-adding pump
CN203348047U (en) * 2013-07-01 2013-12-18 达成生物科技(苏州)有限公司 Liquid sucking and discharging device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1013348B (en) * 1986-10-28 1991-07-31 苏联科学院生物仪器制造科研生产联合公司 Suction tube
CN2265809Y (en) * 1996-06-19 1997-10-29 林燕郎 Ear wax or snot demover
TWI340653B (en) * 2007-11-09 2011-04-21 Ind Tech Res Inst Detachable pump and the negative pressure wound therapy system using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065126A (en) * 1988-07-25 1991-11-12 Honda Giken Kogyo Kabushiki Kaisha Linear actuator
CN101063441A (en) * 2006-04-25 2007-10-31 上海凯实生物科技有限公司 Gas replacement type trace quantity micro sampling-fetching pump
CN101571119A (en) * 2009-05-25 2009-11-04 上海凯实生物科技有限公司 Micro sample-adding pump
CN203348047U (en) * 2013-07-01 2013-12-18 达成生物科技(苏州)有限公司 Liquid sucking and discharging device

Also Published As

Publication number Publication date
CN104279146A (en) 2015-01-14

Similar Documents

Publication Publication Date Title
US20210276004A1 (en) Wash through pipettor
CN104315232B (en) Microfluid micro-valve drive device
CN108001438B (en) A kind of method for exhausting of braking system of electric car
CN104895854B (en) Pressurized cylinder
CN106582907B (en) Pipette capable of automatically withdrawing suction head
CN103523730B (en) A kind of barrel of beer go out wine valve
CN104279146B (en) Liquid sucking and discharging device
CN201078562Y (en) Compression type oil and fat conveyer
CN203348047U (en) Liquid sucking and discharging device
CN110448741A (en) Tumour hydrops extractor
CN210932767U (en) Device for extracting liquid medicine and preparing liquid medicine
CN105439064A (en) Driving device of fake cup for cleaning of filling valve
CN115500825A (en) Hepatitis B examination blood sample collector
CN109777725A (en) A kind of automatic transferred species formula Blood culture machine
CN211272904U (en) Negative pressure liquid-discharging nine-needle head
CN205937288U (en) Oil cylinder drive device of double -piston
CN103573726A (en) Gas-liquid pressurizing cylinder device
CN204198399U (en) A kind of suction means of serum separation gel
CN201747558U (en) Unloading device of compressor
CN209984369U (en) Quantitative injector for animal experiments
CN209278229U (en) A kind of pressurized cylinder
CN201696372U (en) Gas-liquid supercharging cylinder with improved structure
CN214911076U (en) Auxiliary suction device of injector
CN214035629U (en) Automatic liquid discharge device of fracturing pump
CN220299711U (en) Negative pressure sucking disc

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: Xing Pu Road Suzhou Industrial Park Jiangsu province 215126 No. 333 No. 5 building 3A modern industrial workshop

Applicant after: Suzhou biological Polytron Technologies Inc

Address before: Xing Pu Road Suzhou Industrial Park Jiangsu province 215126 No. 333 No. 5 building 3A modern industrial workshop

Applicant before: Dacheng Bio-technology (Suhzou) Co.,Ltd.

COR Change of bibliographic data
CB03 Change of inventor or designer information

Inventor after: Zhang Dong

Inventor after: Song Ruijun

Inventor after: Liu Jin

Inventor before: Chen Renyuan

Inventor before: Zhang Dong

Inventor before: Cui Jinping

Inventor before: Wang Junjie

Inventor before: Wang Zhaoting

Inventor before: Song Ruijun

COR Change of bibliographic data
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 215126 3A, 5, modern industrial square, 333 Xing Pu Road, Suzhou Industrial Park, Jiangsu.

Patentee after: Biotech development (Suzhou) Limited

Address before: 215126 3A, 5, modern industrial square, 333 Xing Pu Road, Suzhou Industrial Park, Jiangsu.

Patentee before: Suzhou biological Polytron Technologies Inc

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170222

Termination date: 20190701