Detector for detecting powder pipeline blockage

Abstract

The invention provides a detector for detecting powder pipeline blockage. The detector comprises a bottom board and an electrical box. One end of the bottom board is fixedly equipped with a protection plate, and the other end is fixedly equipped with a closed dustproof housing; a contact switch is arranged on the bottom board in the dustproof housing; the electrical box is internally provided with a power supply and an alarm device; the contact switch is sequentially connected with the power supply and the alarm device in series to form a working circuit; the dustproof housing is externally provided with a floating plate; one end of the floating plate is connected with a hanger lug through a rotating shaft, and the other end of the floating plate is fixedly provided with a firing pin; the tail end of the firing pin passes through the dustproof housing and is arranged right under the contact switch; and when the floating plate rotates around the rotating shaft, the firing pin is allowed to be close to or far away from the contact switch. The detector is arranged on the inner upper portion of a pipeline; when the pipeline is blocked, the firing pin presses the contact switch to make the working circuit be connected, and an alarm is given; and the detector is high in detection accuracy, reliable and safe and low in cost.

Description

technical field [0001] The invention relates to a detection device, in particular to a detector for detecting blockage in a powder pipeline. Background technique [0002] In the process of industrial production, a large number of semi-finished or finished industrial raw materials are transported or transported through pipelines, such as cement, steel slag, slag, iron ore, limestone, quartz sand, etc. When the operation or transmission pipeline is blocked, it will lead to a decrease in transmission efficiency and reduce production efficiency; in severe cases, production cannot continue. For example, in the process of cement production, V-selection is often used to classify and screen material particles. Because it adopts air selection, the material entering V-selection needs to be evenly distributed in the vertical direction of the air path to form a material curtain of uniform thickness, in order to achieve better results. sorting effect. Therefore, the patent No. 200920...

AI Technical Summary

Problems solved by technology

If the air classifier is blocked by a small channel in the uniform feeding device, the position of the V-selected feed port corresponding to the small channel will not be filled with material, and the material curtain will form a partial blank, and the air path will be short-circuited here, so that the material cannot be formed effectively. wind sorting

[0003] So far, there is no detection device on the market for the blockage of small channels in the uniform feeding device for air classifiers, and there are few blockage detection devices used in powder pipelines in other situations.

The inventor once considered using infrared or ultrasonic radar for detection, but both are greatly affected by the environment, the detection accuracy is not high, and the ultrasonic radar has a high cost, and both of them need to be powered on to work, which has great limitations

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