SU302907A1 - DEVICE FOR REGULATING THE BOTTOM - Google Patents

Description

The invention relates to devices for controlling blowing in furnaces with grates.

Known devices for controlling the blowing of a combustion grate zones containing dampers with driving levers for the zonal overlap blast air. All the levers, and therefore the gates, move simultaneously at a constant speed.

The aim of the invention is to increase the fuel economy.

For this purpose, the arms of the gates are hingedly connected with a bar provided at the ends with driving guide elements, for example screws. The bar is made of several sections hinged together.

FIG. 1 schematically shows a device for controlling blowing, vertical section; in fig. 2 - the same with a composite strap; in fig. 3 shows a general kinematic scheme of the proposed device.

In the housing / device, levers 2 are placed to move the gates 3, covering the openings 4, through which air is supplied to individual zones of the furnace grate (not shown). The levers are pivotally connected by a strap 5, fitted at the ends

drive guides, such as screws 6.

Plank 5 can be made in the form of several sections 7 and 8 that are hinged together among themselves, also moving at the connection point along the guide screw 9. The device works as follows. If necessary, change the zones 6 to 9 directional screws with

the transmission elements are rotated by the engine 10. In this case, the bar 5, the ends of which move along the screws 6 up or down, sets in motion the levers 2 with the slider 3 opening and closing the holes 4

for zone feed blow under the grate zones. The levers with the tweezers move unevenly, depending on the difference in the rotational speeds of the guide screws 6. The movement of the llanca 5 is carried out remotely using the variator 11. The latter is connected to the control motor 12, to which the time function block 13 is connected .

The levers 2 are made in the form of separate 14 parts connected by couplings, which makes it possible to adjust their length. The integral strap 5 can also be made with a telescopic connection of sections and a hinge on one. The hub sleeves 15 installed in the bottom of the case at the point of passage of the levers 2, ensure the tightness of the case when it is separated from the chamber.

The proposed device allows you to quickly change the air supply to the zones of the grate and, therefore, heat generation on it, depending on the load of the firebox and the change in caloric content of the fuel. This allows to obtain a constant amount of heat per unit of time without manual corrective intervention.

Subject invention

1. A device for controlling blowing over the zones of the furnace grate, containing gates with drive levers for zonal overlapping of the blast air, characterized in that, in order to increase the efficiency of fuel combustion, the levers are connected to

drive ends, e.g. screws.

2. Device of claim 1, characterized in that the bar is made of several sections hinged among themselves.

Fig 2

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