CN203764277U - Quantitative transfer pipette - Google Patents
Quantitative transfer pipette Download PDFInfo
- Publication number
- CN203764277U CN203764277U CN201420064349.7U CN201420064349U CN203764277U CN 203764277 U CN203764277 U CN 203764277U CN 201420064349 U CN201420064349 U CN 201420064349U CN 203764277 U CN203764277 U CN 203764277U
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- China
- Prior art keywords
- pipette
- quantitative
- pipette body
- suction inlet
- check valve
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Abstract
The utility model discloses a quantitative transfer pipette. The quantitative transfer pipette comprises a transfer pipette body, wherein one end of the transfer pipette body is a conical suction port; one end of the transfer pipette body, which is far away from the suction port, is a circular tube orifice; a dosing device is sleeved over the circular tube orifice; the dosing device comprises a dosing cylinder which is detachably connected with the circular tube orifice; a piston is arranged inside the dosing cylinder; an operating rod for driving the piston to do a reciprocating motion up and down is arranged on one side of the piston far away from the transfer pipette body; an operating disc is arranged at one end of the operating rod far away from the piston. By arranging the dosing device at the circular tube orifice of the transfer pipette body for accurately transferring liquid in required volume, the quantitative transfer pipette disclosed by the utility model can realize more accurate liquid transferring, and the dosing device is dismountable, so more convenience is provided.
Description
Technical field
The utility model relates to a kind of experimental rig, is specifically related to a kind of quantitative pipette.
Background technology
Pipette is a kind of measuring device that but pipettes the solution of necessarily mentioning that is used for turning, it is a kind of formula instrument that measures, only be used for measuring mentioning of its solution of emitting, generally comprise the straight tube glass tube of a up/down perforation, during use, need to insert pipette upper end mouth of pipe imbitition by rubber pipette bulb, by pipe inner and outer air pressure, reach the object of imbitition, when the amount of taking of liquid is enough, remove rubber pipette bulb, with forefinger, block the mouth of pipe, and by slow moveable finger or pipette, reach the object of regulating liquid surface height, the problem of the test inconvenience existing in the time of can making up without wide range liquid-transfering gun.Existing pipette need to coordinate and get liquid with revenue and expenditure, operation inconvenience, and the page is easily fallen under required scale, is caused moving liquid failure, and the fine setting of liquid level is that the slight movement of pointing realizes, and the more difficult control of liquid level, needs skilled operating technology.Therefore, cannot quick and precisely move accurately liquid.Will affect the accuracy of test.
Summary of the invention
The purpose of this utility model is: for the deficiencies in the prior art, the utility model provides a kind of liquid more quantitative pipette that moves.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of quantitative pipette, comprise pipette body, the suction inlet that one end of described pipette body is taper, described pipette body is circular ports away from one end of suction inlet, described circular ports place is arranged with proportioning device, described proportioning device comprises the quantitation tube removably connecting with circular ports, in described quantitation tube, be provided with piston, described plunger backer is provided with and can driven plunger makes the action bars pumping from a side of pipette body, and described action bars is provided with operation board away from one end of piston.
As preferably, the circular ports place of described pipette body is arranged with rubber sleeve, and described quantitation tube is embedded in described rubber sleeve by a side of pipette body.Adopt after above-mentioned preferred version, can carry out effective sealing to the joining place between quantitation tube and pipette body, avoid the leakage of liquid.
As preferably, described quantitation tube deviates from one end periphery of pipette body along being provided with auxiliary operation annular disk.Adopt after above-mentioned preferred version convenient operation personnel's operation.
As preferably, described suction inlet madial wall is provided with check valve, described check valve comprises check valve body, is provided with one-way fluid passage in described check valve body, is provided with and can makes the keying spheroid pumping along one-way fluid passage in described one-way fluid passage.Adopt after above-mentioned preferred version, open and close the unidirectional unlatching that can control suction inlet that arranges of spheroid, the liquid in pipette can not decline because of Action of Gravity Field, moves liquid quick and precisely.
As preferably, described one-way fluid passage comprises tapered channel and straight channel, described keying spheroid is arranged in described tapered channel and straight channel, the direction setting along suction inlet to pipette body of described tapered channel and straight channel, by suction inlet, the direction to pipette body increases the internal diameter of described tapered channel gradually, and the external diameter of described keying spheroid is greater than the internal diameter at described tapered channel lowest calibre place.Adopt after above-mentioned preferred version, open and close the better effects if of spheroid closed check valve.
As preferably, described straight channel is provided with limit channels away from a side of tapered channel, the madial wall of described limit channels is the conical surface, the internal diameter of described limit channels is dwindled gradually by suction inlet to the direction of pipette body, and the internal diameter at described limit channels minimum diameter place is less than the external diameter of described keying spheroid.Adopt after above-mentioned preferred version, the arranging of limit channels can avoid opening and closing spheroid because the magnetic attraction of magnet ring rises in pipette body, can effectively to opening and closing spheroid, carry out spacing.
As preferably, described check valve body is made by elastomeric material.Adopt after above-mentioned preferred version, utilize rubber to improve and open and close the sealing between spheroid and check valve body, avoid sucking liquid in pipette body because Action of Gravity Field falls.
As preferably, the sidewall of described pipette body is provided with and moves liquid scale.Adopt after above-mentioned preferred version, move liquid quantitatively more accurate.
As preferably, described quantitation tube is provided with quantitation tube scale.Adopt after above-mentioned preferred version, move liquid quantitatively more accurate.
Quantitative pipette of the present utility model arranges proportioning device at the circular ports place of pipette body, and proportioning device can accurately pipette the liquid of required volume, moves liquid more accurate, and proportioning device can be dismantled, convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
As shown in Figure 1, embodiment of the present utility model is a kind of quantitative pipette specifically, comprise pipette body 1, one end of pipette body 1 is the suction inlet 11 of taper, pipette body 1 is circular ports 12 away from one end of suction inlet 11, circular ports 12 places are arranged with proportioning device 2, proportioning device 2 comprises the quantitation tube 21 removably connecting with circular ports 12, in quantitation tube 21, be provided with piston 22, the side that piston 22 deviates from pipette body 1 is provided with and can driven plunger 22 makes the action bars 23 pumping, and action bars 23 is provided with operation board 24 away from one end of piston 22.Circular ports 12 places of pipette body 1 are arranged with rubber sleeve 25, and quantitation tube 21 is embedded in rubber sleeve 25 by a side of pipette body 1.Quantitation tube 21 deviates from one end periphery of pipette body 1 along being provided with auxiliary operation annular disk 211.
Suction inlet 11 madial walls are provided with check valve 3, and check valve 3 comprises check valve body 31, are provided with one-way fluid passage 311 in check valve body 31, be provided with and can make the keying spheroid 312 pumping along one-way fluid passage 311 in one-way fluid passage 311.One-way fluid passage 311 comprises tapered channel 3111 and straight channel 3112, opening and closing spheroid 312 is arranged in tapered channel 3111 and straight channel 3112, tapered channel 3111 and the direction setting of straight channel 3112 along suction inlet 11 to pipette body 1, by suction inlet 11, the direction to pipette body 1 increases the internal diameter of tapered channel 3111 gradually, and the external diameter that opens and closes spheroid 312 is greater than the internal diameter at tapered channel 3111 lowest calibre places.
Straight channel 3112 is provided with limit channels 3113 away from a side of tapered channel 3111, the madial wall of limit channels 3113 is the conical surface, the internal diameter of limit channels 3113 is dwindled to the direction of pipette body 1 gradually by suction inlet 11, and the internal diameter at limit channels 3113 minimum diameter places is less than the external diameter that opens and closes spheroid 312.Check valve body 31 is made by elastomeric material.The sidewall of pipette body 1 is provided with and moves liquid scale 13.Quantitation tube 21 is provided with quantitation tube scale 213.
Claims (9)
1. a quantitative pipette, comprise pipette body, the suction inlet that one end of described pipette body is taper, it is characterized in that: described pipette body is circular ports away from one end of suction inlet, described circular ports place is arranged with proportioning device, described proportioning device comprises the quantitation tube removably connecting with circular ports, in described quantitation tube, be provided with piston, described plunger backer is provided with and can driven plunger makes the action bars pumping from a side of pipette body, and described action bars is provided with operation board away from one end of piston.
2. quantitative pipette according to claim 1, is characterized in that: the circular ports place of described pipette body is arranged with rubber sleeve, and described quantitation tube is embedded in described rubber sleeve by a side of pipette body.
3. quantitative pipette according to claim 1, is characterized in that: described quantitation tube deviates from one end periphery of pipette body along being provided with auxiliary operation annular disk.
4. quantitative pipette according to claim 1, it is characterized in that: described suction inlet madial wall is provided with check valve, described check valve comprises check valve body, in described check valve body, be provided with one-way fluid passage, in described one-way fluid passage, be provided with and can make the keying spheroid pumping along one-way fluid passage.
5. quantitative pipette according to claim 4, it is characterized in that: described one-way fluid passage comprises tapered channel and straight channel, described keying spheroid is arranged in described tapered channel and straight channel, the direction setting along suction inlet to pipette body of described tapered channel and straight channel, by suction inlet, the direction to pipette body increases the internal diameter of described tapered channel gradually, and the external diameter of described keying spheroid is greater than the internal diameter at described tapered channel lowest calibre place.
6. quantitative pipette according to claim 5, it is characterized in that: described straight channel is provided with limit channels away from a side of tapered channel, the madial wall of described limit channels is the conical surface, the internal diameter of described limit channels is dwindled gradually by suction inlet to the direction of pipette body, and the internal diameter at described limit channels minimum diameter place is less than the external diameter of described keying spheroid.
7. quantitative pipette according to claim 4, is characterized in that: described check valve body is made by elastomeric material.
8. quantitative pipette according to claim 4, is characterized in that: the sidewall of described pipette body is provided with and moves liquid scale.
9. quantitative pipette according to claim 1, is characterized in that: described quantitation tube is provided with quantitation tube scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064349.7U CN203764277U (en) | 2014-02-13 | 2014-02-13 | Quantitative transfer pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064349.7U CN203764277U (en) | 2014-02-13 | 2014-02-13 | Quantitative transfer pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203764277U true CN203764277U (en) | 2014-08-13 |
Family
ID=51281525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064349.7U Expired - Fee Related CN203764277U (en) | 2014-02-13 | 2014-02-13 | Quantitative transfer pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203764277U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289260A (en) * | 2014-08-29 | 2015-01-21 | 浙江海洋学院 | Pipette matching device |
| CN109524249A (en) * | 2018-10-30 | 2019-03-26 | 安溪达亚齐机械设计有限公司 | Magnetic varicose reduces the capacitor injection head of dropping liquid |
| CN110844096A (en) * | 2019-12-16 | 2020-02-28 | 杜志刚 | Water sampling environmental protection unmanned aerial vehicle |
-
2014
- 2014-02-13 CN CN201420064349.7U patent/CN203764277U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289260A (en) * | 2014-08-29 | 2015-01-21 | 浙江海洋学院 | Pipette matching device |
| CN109524249A (en) * | 2018-10-30 | 2019-03-26 | 安溪达亚齐机械设计有限公司 | Magnetic varicose reduces the capacitor injection head of dropping liquid |
| CN109524249B (en) * | 2018-10-30 | 2021-06-04 | 江苏三和生物工程股份有限公司 | Magnetic capacitor injection head capable of reducing liquid dropping by means of flexure |
| CN110844096A (en) * | 2019-12-16 | 2020-02-28 | 杜志刚 | Water sampling environmental protection unmanned aerial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZHONGHUAN DETECTING CO., LTD. Free format text: FORMER OWNER: DONG CHANGSHENG Effective date: 20141211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141211 Address after: 325000 Zhejiang Province, Wenzhou city Ouhai District Street Wu Tian CI Feng West Road No. 20 Patentee after: ZHEJIANG ZHONGHUAN DETECTION CO., LTD. Address before: 325000 Zhejiang Central Inspection Co., Ltd., No. 20, Feng Feng Road, Ouhai Economic Development Zone, Zhejiang, Wenzhou Patentee before: Dong Changsheng |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Quantitative transfer pipette Effective date of registration: 20141211 Granted publication date: 20140813 Pledgee: AOKANG Zhejiang silverich investment Company limited by guarantee Pledgor: ZHEJIANG ZHONGHUAN DETECTION CO., LTD. Registration number: 2014990001061 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150213 |
|
| EXPY | Termination of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160617 Granted publication date: 20140813 Pledgee: AOKANG Zhejiang silverich investment Company limited by guarantee Pledgor: ZHEJIANG ZHONGHUAN DETECTION CO., LTD. Registration number: 2014990001061 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |