Manually-operated pipette
A pipette and negative pressure technology, applied in the field of chemical analysis, can solve the problems of large volume of pipettes, influence on service life, inconvenient operation, etc., and achieve the effects of large range, long service life and wide application range.
Active Publication Date: 2018-12-11
中冶武汉冶金建筑研究院有限公司
View PDF12 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The pipette is generally large in size, and the other hand is still required to squeeze the balloon before aspirating, which is inconvenient to operate
Because most of the airbags are made of rubber, the resilience is not good, and they are easy to age in the chemical environment, and their service life is affected
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as Figure 1-2 As shown, a manual pipette includes a housing 1, and the inner chamber of the housing is divided into a pressing chamber and a negative pressure adjustment chamber through a partition 2, and a compressed air chamber 3 and a pressing device are arranged in the pressing chamber, and the two ends of the compressed air chamber They are respectively connected with the partition and the pressing plate 4, and the pressing device drives the compressed air cavity to expand and contract. A connecting pipe 5 is provided on the side wall of the negative pressure regulating chamber, and a baffle 6 is provided at the connection between the connecting pipe and the negative pressure regulating chamber. The cavity is provided with an air chamber 7 and a connecting hose 8, and the two ends of...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a manually-operated pipette. The manually-operated pipette comprises a shell, an inner cavity of the shell is divided into a pressing cavity and a negative pressure adjusting cavity through a partition plate, the pressing cavity is internally provided with a compressed air cavity body and a pressing device, the two ends of the compressed air cavity body are connected to thepartition plate and a pressing plate, a connecting pipe is arranged on the side wall of the negative pressure adjusting cavity, a baffle is arranged at the joint of the connecting pipe and the negative pressure adjusting cavity, the negative pressure adjusting cavity is internally provided with an air chamber and a communicating hose, the two ends of the air chamber are communicated with a first air port in the partition plate and a second air port in the side wall of the negative pressure adjusting cavity, the second air port is sealed through a soft plug, the two ends of the communicating hose are respectively communicated with a first communicating hole in the partition plate and a second communicating hole in the baffle plate, and a negative pressure adjusting device is arranged in thenegative pressure adjusting cavity and is matched with the communicating hose. The manual pipette has the advantages of being simple in structure, low in manufacturing cost, small and exquisite in size, convenient to use, large in measuring range, high in using efficiency and long in service life.
Description
technical field [0001] The invention belongs to the technical field of chemical analysis, in particular to a manual pipette. Background technique [0002] In daily chemical analysis, it is necessary to frequently use the ear wash ball for pipetting and liquid separation. When using the ear wash ball to operate, both hands are required to cooperate with the pipette to operate. If you are not careful, you need to readjust the ear wash ball to draw again, which will result in time-consuming and laborious use, which will affect the operational efficiency of the analysis process. [0003] At present, there are two types of pipettes on the market that can replace ear wash balls: [0004] One is a piston pipette (pipette gun) based on quantitative pipetting of test solution. This type of pipette has a complex structure and high cost. At the same time, due to the volume limitation of the piston air chamber, the measuring range is small, and the cleaning and maintenance after use a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B01L3/02
CPCB01L3/021B01L3/0213
Inventor 魏春阳曾静李少祥
Owner 中冶武汉冶金建筑研究院有限公司