Powder trace sample adding device

Abstract

The invention discloses a powder trace sample adding device, and relates to the technical field of material conveying. The device comprises a supporting structure, a vibration structure and a double-screw conveying structure, the supporting structure is provided with rollers, the vibration structure comprises a motor arranged on a vibration plate, a vibration shaft, a vibration disc and the vibration plate which is movably arranged on the supporting structure, the vibration plate is rotatably connected with the vibration shaft, a plurality of grooves are uniformly distributed in the periphery of the vibration disc, and the rollers are matched with the grooves; the double-screw conveying structure comprises a stock bin arranged on the vibration plate and two screw rods in transmission connection with the motor, the two screw rods are both located in the stock bin and are both arranged in the direction from the feeding port to the discharging port, the peripheries of the two screw rods are both provided with screw blades, each of the two screw blade comprises a plurality of connected screw parts, and the screw part of one screw blade extends into the space between the two adjacent screw parts of the other screw blade. Through the arrangement, the feeding speed and the feeding precision are guaranteed at the same time, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of material conveying, and more specifically relates to a powder micro-sampling device. Background technique [0002] In the field of material transportation, feeding through a double screw feeder can only guarantee the speed of feeding but cannot guarantee the accuracy of feeding. At present, most of the micro-feeding of powder is by manual weighing, which consumes more energy and time. In the prior art, a company of Mettler in Switzerland produces a powder sampler, including a sampler head, which can meet the requirements of feeding accuracy through the sampler head, but the product price of this device is expensive, and a piece of equipment It is about one million yuan, and the sampling head is a consumable with a service life of one month. The sampling head needs to be replaced regularly. The price of one replacement is about 5,000 yuan, so the price of using this powder sampler is high. [0003] There...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a powder micro-sampling device to solve the technical problem that the feeding device in the prior art cannot guarantee the feeding speed and feeding accuracy at the same time, and the feeding accuracy is guaranteed, but the cost is too high

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