CN104857753A

CN104857753A - Funnel capable of improving filter efficiency

Info

Publication number: CN104857753A
Application number: CN201510287186.8A
Authority: CN
Inventors: 张晓静; 秦存永; 任志强; 张艳芳; 李杰辉; 苏国岁; 刘伟; 焦芃然; 郑松锦; 马桂芹; 阎瑾; 何爱民; 郝红玲
Original assignee: HEBEI CHINA TOBACCO INDUSTRY Co Ltd
Current assignee: HEBEI CHINA TOBACCO INDUSTRY Co Ltd
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2015-08-26

Abstract

The invention discloses a funnel capable of improving the filter efficiency. The funnel is characterized in that strip-shaped bulges are uniformly distributed on the inner surface of the funnel, and an included angle between the axis of the funnel and the axis of a funnel neck is 30 to 45 degrees. During filtering, the strip-shaped bulges can enable wet filter paper to keep a certain gap layer with the inner surface of the funnel, the surface tension of the filter paper with the inner surface of the funnel can be reduced, the speed of liquid passing through the filter paper can be quickened, a continuous liquid flow can be formed on the inner surface of the funnel due to the strip-shaped bulges on the inner surface of the funnel when a filter liquor passes through the filter paper to reach the inner surface of the funnel, and the filter liquor successfully drains to an opening of the funnel neck along the directions of strips. Due to the fact that the included angle of 30 to 45 degrees is formed between the axis of the funnel and the axis of the funnel neck, the contact between the opening top end of the funnel neck and the wall of a conical flask can be realized when utensils such as the conical flask are used for filtering. Therefore, the filter liquor flows into the conical flask along the wall of the flask from the funnel neck through drainage, and the flow rate of the filter liquor flowing out of the funnel can be greatly quickened.

Description

A kind of funnel improving filter efficiency

Technical field

The present invention relates to funnel.

Background technology

Funnel is as the filter generally used in laboratory, when filtering, because moistening filter paper directly contacts with funnel inner surface, surface tension is larger, hinder liquid and pass through filter paper, reduce filter efficiency, especially in conical flask class vessel during drainage filter liquor, filler neck tip cannot contact with conical flask bottle wall and cannot realize the drainage of filtered fluid smoothly.

Summary of the invention

The invention provides a kind of " y " type funnel being provided with striated projection at funnel inner surface, to improve the rate of filtration, overcome prior art drawback.

For realizing the object of the invention, this funnel improving filter efficiency is characterized in that being evenly equipped with striated projection at the inner surface of funnel, and between funnel axis and filler neck axis, angle is 30 ~ 45 °.

The technological progress that the present invention obtains:

1, owing to being evenly distributed with striated projection at funnel inner surface of the present invention, thus when filtering, because striated projection can make to maintain certain clearance layer between moistening filter paper and funnel inner surface, compared to the structure that moistening filter paper directly contacts with funnel inner surface, the surface tension of filter paper and funnel inner surface can be reduced, thus can accelerating liquid by the speed of filter paper, when filtrate arrives funnel inner surface by filter paper, continuous print liquid stream will be formed at funnel inner surface because the striated of funnel inner surface is protruding, and be drained to filler neck smoothly along stripe direction and chew mouth.

2, owing to being designed to the angle in 30 ~ 45 ° between funnel axis and filler neck axis, the gesture of filler neck in inclination during filtration, thus the contact of filler neck tip and conical flask wall can be realized when using conical flask class vessel to filter, thus make filtrate liquid stream be that the gesture of drainage flows into conical flask by filler neck along bottle wall, greatly can accelerate filtrate and flow out the flow velocity of funnel.

Accompanying drawing explanation

Fig. 1 is perspective view of the present invention.

Fig. 2 is the top view of Fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention will be described in detail.

As shown in Figure 1 and Figure 2, this its structure of funnel improving filter efficiency is the striated projection 2 being evenly distributed with inclination at the inner surface of funnel 1, between the axis of striated protruding 2 and funnel 1, angle is preferably 25 ~ 35 °, and between the axis of funnel 1 axis and filler neck 3, angle α is 30 ~ 45 °.

Before filtration, the funnel 1 that filter paper is housed is placed on funnel stand, due to the gesture of filler neck 3 in inclination, filler neck 3 is chewed most advanced and sophisticated the generation with conical flask bottle wall of mouth and is contacted, liquid to be filtered is injected to 1 li, funnel, liquid is drained to chews mouth 4 by forming continuous print liquid stream along protruding striped 2 after filter paper, and filtrate flow is drained to conical flask and goes downstream along bottle wall and inject in bottle after filler neck 3.

Claims

1. can improve a funnel for filter efficiency, it is characterized in that being evenly equipped with striated projection at the inner surface of funnel, between funnel axis and filler neck axis, angle is 30 ~ 45 °.