Shrimp-shaped curved hopper

Abstract

The invention provides a shrimp-shaped curved hopper which comprises a left tubular material falling pipe hopper and a right tubular material falling pipe hopper, each material falling pipe hopper is composed of a plurality of unit pipe sections from top to bottom, the cross section outline of a pipe cavity is integrally circular or semicircular and is gradually reduced from top to bottom, and the portions, located above gate valves, of pipe cores between the two material falling pipe hoppers are deviated from each other from top to bottom; each material falling pipe hopper is composed of the multiple unit pipe sections from top to bottom, and the pipe cavity is gradually reduced from top to bottom, so that the whole formed material falling pipe hopper is in a shrimp shape like a curve; the pipe cores of the material falling pipe hoppers are arranged in a deviated mode in the direction away from each other from top to bottom, so that the positions of discharging ports in the lower ends of the material falling pipe hoppers can be guided to the positions where coal feeders are located, therefore, the requirement for the space between the material falling pipe hoppers and installed and fixed coal mills is met, pulverized coal in fixed coal bunkers can be guided to the coal mills, and meanwhile smooth discharging of the pulverized coal can be guaranteed.

Description

technical field [0001] The invention relates to a hopper of a material bin, in particular to a hopper of a raw coal bin. Background technique [0002] The bottom of the silo where the materials are stored is connected with a hopper that extends downward as a whole, and the materials fall through the hopper to the conveyor and are transported downstream under the action of gravity. For example, in the power plant boiler pulverization system, the raw coal is stored in the silo, and there is a coal hopper at the bottom of the silo. The lower end of the coal hopper is connected with the belt conveyor, also known as the coal feeder. And close to the gate valve arranged. Due to various reasons, the phenomenon of material arching, bridging or agglomeration in the coal hopper frequently causes hopper blockage or difficulty in unloading. For this reason, the utility model patent of " a kind of modularized eccentric anti-blocking raw coal hopper suitable for circulating fluidized be...

AI Technical Summary

Problems solved by technology

", there is following defect in above-mentioned technical scheme, one is, the plate cutting work load that above-mentioned scheme needs to carry out is huge, certainly welding workload is also bound to be huge, for example wherein first coal bunker 31 needs to cut four plates, needs welding simultaneously Four welding seams weld the four plates together, and the deformation caused by cutting and re-welding is extremely increased. The second coal bunker 32 also has serious shape errors. The welding of the first coal bunker 31 and the second coal bunker 32 The difficulty increases and the shape error after welding is accumulated again; the second is the arc forming work of the hyperbolic plate surfaces of the first coal bunker 31, the second coal bunker 32, etc. as the constituent units of the lower coal hopper 3 The third is that the angles between all the adjacent pipe walls at the same height are basically right angles, so the material clamping or stagnant area has been formed, which consumes materials and occupies space and is critical to smooth falling. The material not only did not play a positive role, but played a negative role; the fourth is that the pulverizing system applicable to D1 does not have a coal mill, that is, the position of the outlet at the lower end of the lower coal hopper 3 does not need to take into account the setting of the coal mill. image 3 As shown, only the middle coal hopper 2 has an eccentric shape, and the two middle coal hoppers 2 have the same eccentric direction. Figure 5 , 6

For pulverized coal boilers with coal pulverizers installed, the above scheme cannot be used, because the volume of the coal pulverizer determines the distance between the two coal pulverizers, the level between the silo and the two coal pulverizers The position and spacing of the orientation cannot be changed unless the coal mill is relocated and installed. The fact is that there is no space in the plant to provide it with a changed installation position and space.

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