Syringe filter and its upper cover
A filter and needle technology, applied in the field of the upper cover of the needle filter, can solve the problems of easy local accumulation of impurities and foreign matter, easy damage to the filter membrane, etc., to achieve stable and fast filtration speed, avoid clogging, and ensure the effect of filtration speed.
Active Publication Date: 2014-10-29
ZHEJIANG SORFA MEDICAL PLASTIC
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Problems solved by technology
[0003] However, the existing syringe filter structure has problems such as easy damage to the filter membrane and easy local accumulation of filtered impurities and foreign matter.
Method used
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Embodiment 1
[0020] Such as figure 1 A syringe filter shown includes an upper cover 1, a lower cover 2, a filter membrane 3 and a covering ring 4, and the upper cover 1 includes an upper cover disc body 16 and an input tube 17 arranged in the center of the upper cover disc body 16 , the lower cover 2 includes a lower cover disc body 26 and an output pipe portion 27 arranged at the center of the lower cover disc body 26, and the upper cover disc body 16 and the lower cover disc body 26 are connected up and down to form an accommodating filter membrane 3 therebetween The cavity of the filter membrane 3 is clamped and fixed by the upper cover disc body 16 and the lower cover disc body 26 so that the cavity is divided into upper and lower parts, and the outer periphery of the upper cover disc body 16 and the lower cover disc body 26 is wrapped The tube hole 11 of the input tube part 17 is connected to the upper part of the cavity, and the tube hole 21 of the output tube part 27 is connected to...
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The invention discloses a syringe needle filter and an upper cover thereof. The upper cover includes an upper cover disc body and an input pipe part arranged in the center of the upper cover disc body, wherein a plurality of support rods A are arranged at the joint of the input pipe part and the upper cover disc body, and extend in the radial direction of the pipe orifice of the input pipe part and are centrally converged and connected; a plurality of arc bulges A, circular arc grooves A and radial grooves A are formed in the inner wall of the upper cover disc body; the arc bulges A are distributed in the shapes of concentric circles by taking the pipe orifice of the input pipe part as the center; one circular arc groove A is formed between every two arc bulges A adjacent at the internal and external parts; the circular arc grooves A are communicated with one another through the radial grooves A; the radial grooves A are communicated to the pipe orifice of the input pipe part and are radially distributed. Through the adoption of the technical scheme, the filtering membrane is not easy to break and damage, the filter is less susceptible to blockage, and the filtering speed is stable and high.
Description
technical field [0001] The invention relates to a needle filter, in particular to an upper cover of the needle filter. Background technique [0002] Membrane separation technology is known as "one of the most promising high-tech in the middle of the 21st century", among which the application of microporous membrane separation in the fields of biology, chemical analysis and pharmaceuticals is the most eye-catching, without the need to change membranes and clean filters , which saves complex and time-consuming preparations and is widely used in laboratories. Syringe filter has simple and reasonable structure, low cost, good filtering effect and strong universal applicability. It can be used as a fast, convenient and reliable filter treatment device for small-volume samples for routine use in laboratories, and is widely used for pre-filtration of samples. And in the sterilization and filtration operation of laboratory biological fluids, culture media and media additives. For ...
Claims
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IPC IPC(8): B01D29/05B01D61/00
Inventor 蒋峥嵘
Owner ZHEJIANG SORFA MEDICAL PLASTIC