Machine speed control system of chain grate

Abstract

The invention relates to the technical field of automatic control, in particular to a machine speed control system of a chain grate. The machine speed control system of the chain grate comprises a green ball material amount measuring device, a green ball material thickness measuring device, a frequency converter and a control device, wherein the green ball material amount measuring device, the frequency converter and the green ball material thickness measuring device are respectively connected with the control device, the green ball material thickness measuring device measures at least three green ball material thickness measuring values instantaneously, and the frequency converter is connected with the chain grate through a driving motor. The machine speed control system of the chain grate can achieve control over the machine speed of the chain grate, enables the thickness of a material layer on the chain grate to be reasonable, prevents the phenomena of burning loss of grate bed equipment and resource waste of a wind short circuit, guarantees the quality of ball drying, and prevents the problems of ring forming, ball breaking and caking inside a kiln, red material generation of an annular cooler and the like.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a chain grate machine speed control system. Background technique [0002] In the pellet production process, the control of the grate machine is the initial stage of the pellet roasting process, and it is also one of the key links in pellet production. The chain grate machine is a chain-type drying and roasting equipment composed of grate plates, chain links, side grate plates, small shafts, small shaft sleeves, upper and lower support shafts and transmission mechanisms. Wet balls) are dried and roasted into dry balls (anhydrous dry balls), and the dry balls are continuously conveyed to the rotary kiln, and the raw balls are dried and roasted during the movement, which has two functions of drying and conveying. The speed of the grate machine directly affects the thickness of the material layer on the grate bed, and the thickness of the material layer has a great influen...

AI Technical Summary

Problems solved by technology

In the case of the same amount of material, if the machine speed is fast, the ball material on the grate bed will become thinner, and it is easy to burn the grate bed equipment and waste energy due to wind short circuit; Poor abrasiveness and brittle, this kind of poor quality dry balls will cause problems such as ring formation, broken balls, agglomeration in the kiln, and red material from the ring cooler after entering the kiln.

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