Pollen collector

Abstract

The invention discloses a pollen collector, which comprises a machine box, a bearing speed reducing motor and a sampling bracket, wherein the bearing speed reducing motor is arranged in the machine box and provided with a bearing driving output shaft; the sampling bracket is arranged on the machine box. The bearing driving output shaft is vertical to the horizontal plane. The top end of the bearing driving output shaft penetrates through the upper end wall of the machine box and is connected with the sampling bracket. A vertical sampling sheet is fixedly connected to the sampling bracket. The invention can carry out both continuous long-term observation and sampling and intermittent sampling in a fixed time, and can carry out sampling in overcast and rainy days or shower days. The specially designed rotary protective closure can protect the sampling sheet, and also can ensure the accuracy of the collecting concentration and flux calculation. The invention has the advantages of simple structure, small volume and convenient carrying.

Description

technical field [0001] The invention relates to the field of collecting air microorganisms and pollen, in particular to a pollen collector. Background technique [0002] To conduct research on airborne allergenic pollen pollution and investigate airborne allergenic pollen, the first thing to solve is the problem of pollen collection. The quality of pollen collection is related to the scientificity and objectivity of pollen pollution indicators. [0003] At present, the common detection method in foreign countries is the Burkard pollen traps pollen sampler designed by the principle of aerodynamics. The pollen is collected into the sampling bar, and the pollen concentration is calculated by the formula through the microscope. The unit is: pollen number m -3 d -1 . The Burkard sampler sucks air into the closed inner chamber at a constant speed (10L / min) through the air inlet, and the particles in the air are adhered to the surface of the sampling drum rotating in the inner c...

AI Technical Summary

Problems solved by technology

In this way, the observation results due to the non-uniformity of concentration units are difficult to compare with those of international counterparts. In addition, although the natural sedimentation method is simple and easy to implement, due to the limitations of the method itself, it only observes the amount of pollen falling on the glass slide, and does not The pollen that has not landed and floated in the air is missed, so it is difficult to accurately reflect the actual pollen concentration in the air

Although the volumetric measurement method is used in the current scientific research on atmospheric pollen concentration, and the JWL-I type air microbial sampler is used for pollen sampling, but the JWL-I type air pump sometimes stops due to the lack of fine machining. turn phenomenon, resulting in unstable gas flow

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