RU1823919C - Tunnel kiln - Google Patents

Abstract

The invention relates to the field of industrial furnaces, in particular to tunnel kilns for roasting porcelain and other ceramic products. The essence of a tunnel kiln has a zone of undermining, crimping, preliminary and final cooling. Between the last zones, a lock chamber is installed in which the air duct is located. The working space of the chamber is made with curtain partitions overlapping the free or ca / ki working space. The partitions are located on the side of the pre-air cooling zone 3 silt

Description

The invention relates to the field of industrial furnaces, in particular tunnel furnaces for roasting electric porcelain and other ceramic products.

The aim of the invention is to increase the productivity of the furnace and improve working conditions.

In Fig.1 shows a diagram of a longitudinal section of the proposed tunnel kiln, Fig. 2 is a section along AA in FIG. 1, FIG. 3 is a section BB of FIG. 1.

The furnace contains a tunnel chamber 1 with zones of heating 2, firing 3, pre-cooling 4, and final cooling 5. A furnace conveyor is placed in the furnace 7. Between zones 4 and 5, a lock chamber is installed with an air duct 8 for supplying cooling air, as well as flow restrictors - curtain walls 9. The final cooling zone is provided with a rapid expiration system consisting of openings 10 a of the upper part; SGHLJ final cooling as well as holes 11 for selection

air from 1 part of it. The system also includes inlets of cold air inlet regulators 12, installed in front of fans 13, rotary dampers 14 for regulating the expiration rate 15 - for supplying part of the exhaust air to disposal, 16 - for adjusting the exhaust air extraction from the final cooling zone .day.

The furnace operates as follows: Tele-conveyor 6 with the material to be processed 17, passing through the heating zone 2 and about 1 3, enters the pre-cooling zone 4, in which it is cooled by air coming from the lock chamber 7, and which has excess pressure After passing through the chamber The material on the trolley conveyor enters the final cooling zone 5. where the bulk of the cooling air passes through h.

The current as I’m waiting for the lock chamber 7 and the zone of the hotel cooling is absent air flow restrictors, completely (L

WITH

the air supplied to chamber 7 flows into the final cooling zone.

The streams flowing from opposing openings in zone 5 collide downward into the free furnace volume between products 17, forming the flow shown in Fig. 3 by arrow C. When the shutters 14 are rotated synchronously (configured according to the principle of one open, opposite closed), the flow C is periodically mixed to the right or left along the free furnace volume 18 between the articles (see the flow position a and c in Fig. 3). By installing in the gateway10

In addition, the use of the proposed tunnel kiln provides better working conditions, since the furnace excludes the ingress of flue gases into the cooling zone and together with the products when leaving the kiln in the workshop workspace.

In addition, the air supplied for utilization does not contain any impurities of the combustion products, which makes it possible to use its heat more efficiently for technological needs.

Claims (1)

The claims A tunnel kiln for firing predominantly ceramic products containing a chamber 7 from the zone side preliminarily operating a tunnel chamber with zones For cooling 4, curtain partitions were installed that overlap the tunnel-free working space of the tunnel. Using this design 20, zones 2,3,4 and zone 5 operate independently in their own mode, and in the zone of final cooling conditions can be created for cooling products by quick heating, firing, preliminary and final cooling, an air duct connected between the last zones with a pressure fan, which, in order to increase productivity and improve working conditions, the duct is enclosed in a lock chamber made with curtain partitions overlapping regime, which intensifies the oh-25 workspace-free workspace In addition, the use of the proposed tunnel furnace provides better working conditions, since the furnace excludes the ingress of flue gases into the cooling zone and together with the products when leaving the furnace into the workshop workspace. In addition, the air supplied for utilization does not contain any impurities of the combustion products, which makes it possible to use its heat more efficiently for technological needs. The claims A tunnel kiln for firing predominantly ceramic products comprising a working tunnel chamber with zones heating, firing, preliminary and final cooling, an air duct located between the last zones, connected to a pressure fan, which means that in order to increase productivity and improve working conditions, the air duct is enclosed in a lock chamber made with curtain walls, overlapping workspace free fading and leads to increased productivity of the tunnel kiln. Ahh ..H Vario- Zo pxwixfo- none furnace and located on the pre-cooling side.  B S, 7 1 / 18/5 LO Oh t nd 0kemal2el, oed okhla keni 7 T s