CN2379484Y

CN2379484Y - Annealing hearth

Info

Publication number: CN2379484Y
Application number: CN 99224380
Authority: CN
Inventors: 钟家生
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-04
Filing date: 1999-07-04
Publication date: 2000-05-24
Anticipated expiration: 2009-07-04

Abstract

The utility model relates to an annealing kiln furnace, which comprises a furnace body 1, a combustion chamber 2, a furnace grate 3, a kiln chamber 4, and flues 5, 6, 7, 8. Fire driers 30, 60 and air supplying pipes 31, 61 are arranged in the combustion chamber 3 and at the upper end of the flue 5. The utility model has simple structure, and can effectively eliminate black smoke.

Description

Annealing kiln

The utility model relates to annealing kiln, especially for ironcasting annealed kiln.

Ironcasting annealing kiln (shown in accompanying drawing 1) following middle part in body of heater 1 is provided with fire grate 2, combustion chamber 3, two ironcasting heating anneal 4a of firing chamber about 3 tops, combustion chamber vertically are provided with side by side, 4b, the two annealing 4a of firing chamber, form the up fire smoke gases passage 5 that communicates with 3 upper ends, combustion chamber between the 4b, two annealing 4a of firing chamber, form flue chamber, top 6 between the top of 4b and body of heater 1 inside top, the two annealing 4a of firing chamber, form the descending exhaust gases passes 7a in both sides respectively between the 4b outside and body of heater 1 inner side-wall, 7b, about two annealing the 4a of firing chamber, the 4b bottom offers vertical discharge flue 8a, 8b, communicating with descending exhaust gases passes 7a/7b at the leading section of discharge flue 8a/8b has smoke intaking hole 80a/80b, two discharge flue 8a, 8b leads at the rear portion of body of heater 1.This foundry goods annealing kiln combustion chamber fire grate burning, fire smoke gases, heats two the annealing 4a of firing chamber, 4b around two the annealing 4a of firing chamber, 4b operations through updraught flue 5, flue chamber, top 6, both sides down pass 7a, 7b, bottom smoke-uptake 8a, 8b.The shortcoming deficiency that this annealing kiln exists is, the fire grate of the individual layer a large amount of black smokes of insufficient generation that burn, and can not eliminate, cause environmental air pollution serious.

The purpose of this utility model is to improve at this kiln, provides a combustion efficacy good, can eliminate the foundry goods annealing kiln of black smoke.

The utility model technical solution is in the annealing kiln that said structure constitutes, and is provided with fire baking 30,60 and secondary air

air supply line

31,61 respectively with updraught flue 5 upper port places in combustion chamber 3.

The utility model is owing to being provided with fire baking 30 and secondary air air supply line 31 in combustion chamber 3, being provided with fire baking 60 and secondary air air supply line 61 at updraught flue 5 upper port places, fire baking 30,60 is by high thermal-flame and flue gas heating and carry out heat build-up, but very high this red heat state of its temperature, and can improve flue temperature effectively, the black smoke flue dust that does not fully burn and produce in the fire grate combustion chamber, drying by the fire at 30,60 o'clock through overdoing by fire baking delay heating, fully burning under the assistance of secondary air oxygen supply, thus black smoke can be eliminated fully effectively.It is simple in structure, and is effective.

Fig. 1 is the utility model structure cross-sectional schematic

Fig. 2 is the utility model body of heater front end front view.

As shown in Figure 1, the utility model is by body of heater 1, the middle part is provided with fire grate 2 down in body of heater 1, combustion chamber 3, two ironcasting heating anneal 4a of firing chamber about 3 tops, combustion chamber vertically are provided with side by side, 4b, the two annealing 4a of firing chamber, form the up fire smoke gases passage 5 that communicates with 3 upper ends, combustion chamber between the 4b, two annealing 4a of firing chamber, form flue chamber, top 6 between the top of 4b and body of heater 1 inside top, the two annealing 4a of firing chamber, form the descending exhaust gases passes 7a in both sides respectively between the 4b outside and body of heater 1 inner side-wall, 7b, about two annealing the 4a of firing chamber, the 4b bottom offers vertical discharge flue 8a, 8b, at discharge flue 8a, the leading section of 8b and descending exhaust gases passes 7a, 7b communicates and has smoke intaking hole 80a, 80b, two discharge flue 8a, 8b leads to formation at the rear portion of body of heater 1, it is characterized in that in combustion chamber 3, being provided with fire baking 30 and secondary air air supply line 31, in updraught flue 5 upper port, promptly in flue chamber, top 6, be provided with fire baking 60 and secondary air air supply line 61 on the top, corresponding updraught flue 5 upper port annealing firing chamber, fire baking 30,60 are made of heat resistance concrete or refractory brick, fire baking 30,60 are constituted by one or polylith, in fire baking 30, offer ventilating pit 32 on 60,62.Secondary air

air supply line

31,61 is made of hollow brick or steel pipe, has several air outlet openings on tube wall.

The utility model is provided with air feed pipe 21 below fire grate 2, combustion-supporting to fire grate zone of combustion air feed according to the fire grate state of combustion, to improve the fire grate combustion efficacy, reduces black smoke and produces.

Shown in accompanying drawing 1, the air-supply pipeline 90 that is provided with gas blower 9 and leads to secondary air

air supply line

31,61,21 on the front end face of body of heater 1 is provided with air register 91 on air-supply pipeline 90.

Claims

1, a kind of annealing kiln, by body of heater (1), the middle part is provided with fire grate (2) down in body of heater (1), combustion chamber (3), two ironcasting heating anneal (4a of firing chamber about top, combustion chamber (3) vertically is provided with side by side, 4b), two annealing (the 4a of firing chamber, form the up fire smoke gases passage (5) that communicates with combustion chamber (3) upper end 4b), two annealing (4a of firing chamber, form flue chamber, top (6) between top 4b) and body of heater (1) inside top, two annealing (the 4a of firing chamber, 4b) form the descending exhaust gases passes (7a in both sides respectively between the outside and body of heater (1) inner side-wall, 7b), about two annealing the (4a of firing chamber, 4b) bottom offers vertical discharge flue (8a, 8b), at discharge flue (8a, leading section 8b) and descending exhaust gases passes (7a, 7b) communicate and have smoke intaking hole (80a, 80b), two discharge flue (8a, 8b) lead to formation at the rear portion of body of heater (1), it is characterized in that in combustion chamber (3), being provided with fire baking (30) and secondary air air supply line (31), promptly in flue chamber, top (6), be provided with fire baking (60) and secondary air air supply line (61) on the top, corresponding updraught flue (5) upper port annealing firing chamber in updraught flue (5) upper port, in fire baking (30,60) offer ventilating pit (32 on, 62).

2, annealing kiln according to claim 1 is characterized in that fire baking (30,60) is constituted by polylith; Secondary air air supply line (31,61) is made of hollow brick.

3, annealing kiln according to claim 1, it is characterized in that fire grate (2) below be provided with air feed pipe (21).

4, according to claim 1 or 2 or 3 described annealing kilns, it is characterized in that the air supply line (90) that on the front end face of body of heater (1), is provided with gas blower (9) and leads on air-supply pipeline (90), being provided with air register (91) with secondary air air supply line (31,61,21).