Feeding device and method with automatically-adjusted feeding amount

Abstract

The invention provides a feeding device and method with automatically-adjusted feeding amount. The feeding device is installed above a mold conveying rail of a prefabricated plate production line, thefeeding device comprises a machine frame, a material bin, a hopper, a load device, a rotary feeding valve and a controller, wherein the material bin, the hopper and the rotary feeding valve are in sequential communication from top to bottom, the load device is arranged on the machine frame, the material bin, the hopper, the rotary feeding valve and a built-in thick-liquid material weight are allapplied to a load end of the load device, and a data interface of the load device is electrically connected to the controller. According to the feeding device, the feeding amount in one feeding periodmonitored online by the load device is acquired by the controller, the rotating speed of an impeller of the rotary feeding valve is adjusted online, so that the purpose of automatically adjusting thefeeding amount is achieved; an on-line sliding filter can eliminate field mechanical vibration interference and pulse interference, so that the precision of feeding amount detection is improved, andthe on-line monitoring real-time performance requirement is met; and the device is compact in structure and high in automation degree, and the working efficiency and the product quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of prefabricated board manufacturing, and in particular relates to a cutting device and method capable of automatically adjusting the cutting amount. Background technique [0002] At present, prefabricated panels are widely used in building construction, and they are usually produced by a flat molded prefabricated panel production system. There is a blanking device in the middle, and the blanking device is one of the key components, which is used to control the slurry to enter the forming mold according to the predetermined amount. [0003] For different applications, the thickness of the prefabricated slab will be different, which requires precise control of the amount of slurry that enters the forming mold per unit time to obtain different thicknesses of the material layer. The current common practice is to manually adjust the material valve. Adjusting the feeding amount by adjusting the opening degree, t...

AI Technical Summary

Problems solved by technology

[0003] For different applications, the thickness of the prefabricated slab will be different, which requires precise control of the amount of slurry that enters the forming mold per unit time to obtain different thicknesses of the material layer. The current common practice is to manually adjust the material valve. Adjust the amount of feeding by adjusting the opening degree, the accuracy is poor, and it is time-consuming and labor-intensive, and cannot realize online operation

[0004] The existing blanking device usually adopts a blanking valve to control the blanking volume. The blanking valve usually has two types of flap blanking valve and rotary blanking valve. The blanking volume of the flap blanking valve is not only related to the size of the feed port It is also related to the weight of the slurry in the silo and hopper. It is easy to have uneven discharge volume in one discharge cycle, resulting in uneven thickness of prefabricated panels, especially for gel materials with strong fluidity. material, the flow control is not good, and the feeding accuracy is poor; because the rotary feeding valve relies on the rotation of the impeller to achieve constant volume feeding, its flow control of the material is better than that of the flap valve, but in the existing rotary feeding valve, The impeller is usually made of metal. In order not to affect the rotation of the impeller and avoid friction between the impeller and the inner wall of the valve, a small gap is left between the impeller and the valve body

The above-mentioned structure results in poor sealing of the impeller, and the slurry is easy to leak from the gap, which affects the feeding accuracy; in addition, in the actual operation process, fine sand and gravel are easy to get stuck in the gap between the impeller and the valve body, resulting in increased friction of the rotary feeding valve. Large, the impeller is easily damaged, or even unable to operate, affecting the continuity of production

[0005] In addition, for cementitious materials with poor fluidity and high cohesion, the slurry in the hopper is easy to hang on the wall, which may cause the problem of poor feeding

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