CN2266719Y

CN2266719Y - Screw plate type hot-air furnace

Info

Publication number: CN2266719Y
Application number: CN 96215183
Authority: CN
Inventors: 董连刚; 褚国军
Original assignee: CEREALS MACHINERY PLANT SHANMEN DEV ZONE SIPING CITY
Current assignee: CEREALS MACHINERY PLANT SHANMEN DEV ZONE SIPING CITY
Priority date: 1996-07-26
Filing date: 1996-07-26
Publication date: 1997-11-05
Anticipated expiration: 2006-07-26

Abstract

The utility model discloses a screw plate type hot-air furnace, comprising a combustion chamber (1), a heating chamber (2), and a preheating chamber (3). A set of inclined grates (4) are arranged in the combustion chamber (1). One to four sets of screw plate type heat exchangers (21) can be designed in the heating chamber (2) according to the need of heat productivity. The center of the preheating chamber (3) is provided with a set of superconductor heat pipe elements (25). The utility model has the advantages of high heat efficiency, low manufacture cost, etc.

Description

The spiral plate type hot-blast stove

The utility model relates to a kind of hot air boiler that is used for food, fruit, grain, feed, medicinal material oven dry processing.

Present all genus air-heating furnaces mostly adopt multilayers such as tube bank heat pipe, helix tube, deflection plate, air distribution plate, barrier plate and chamber, labyrinth back and forth to conduct heat, and heat exchange is all kinds hot-blast stove of principal character.The above hot-blast stove of comparing exists heat transfer area few, and the thermal efficiency is low, easily stops up and inconvenience cleaning again complex manufacturing, shortcomings such as manufacturing cost height.

The purpose of this utility model is to provide that a kind of heat transfer area is big, flow resistance is little, the thermal efficiency is high, quick heating, life-span are long, the spiral plate type hot-blast stove that heat loss is few.

The utility model comprises combustion chamber, heating clamber and gives three parts in hot cell.In the combustion chamber, be provided with one group of inclined grate.Needs according to caloric value in heating clamber can design 1-4 group spiral heat exchanger, stay-warm case outside the skin of heating clamber designs, and this spiral heat exchanger mainly is made up of shrouding, central dividing plate and plurality of sections arc.Be provided with one group of superconductor heat-pipe elements in the central authorities that give the hot cell.

The utlity model has advantages such as thermal efficiency height, applied widely, low cost of manufacture.

Accompanying drawings embodiment:

Fig. 1, be spiral plate type hot-blast stove main body schematic diagram;

Fig. 2, be spiral plate cutaway view in the spiral plate type hot-blast stove;

Fig. 3, be superconductor heat pipe schematic diagram in the spiral plate type hot-blast stove.

From Fig. 1～Fig. 3, learn: this utility model by combustion chamber 1, heating clamber 2, give 3 three parts in hot cell and make.Be provided with one group of inclined grate in its combustion chamber 1, front end is established three fire grates, and gradient is 20-25 °; It is 5-10 ° that two fire grate gradients are established in the rear end, keeps 15-16 millimeter ventilation gap between per two fire bars of fire grate, the size of fire grate, the size of area decision according to actual needs.Coal glides along inclined grate 4 in combustion chamber 1, its combustion process coal seam constantly forms four-stages such as giving the surplus combustion layer of thermosphere, destructive distillation layer, burning zone and lime-ash, and whole combustion process also is the process that constantly produces combustion gas, pyrotechnic gas, destructive distillation gas, semi-coal gas gas and produce heat simultaneously.Combustion gas and pyrotechnic gas are to belong to the after-flame part, and destructive distillation gas and semi-coal gas gas belong to the uncombusted part, also have a large amount of carbon monoxide to exist.At this moment, unburnt gas is burnt away and generate the carbon dioxide heat release.The first half of combustion chamber is made of in combustion chamber 1 firing door 6, ashpit 7, cleanout door 8.The combustion gas pyrotechnic gas enters expansion chamber 10 by crater 9, at this moment, makes sootfall and separate the after heat flue gas to enter accumulation chamber 11 (being the body of heater lower layer space) just the combustion chamber is latter half of.Hot blast temperatures in the air outlet elbow 12 mainly rely on the accumulation chamber width of cloth to penetrate heat and convection heat transfer' heat-transfer by convection and heat.For improving and prolong the service life of elbow, at the outer surface of air outlet elbow 12 protective cover 13 is installed and is protected.Main heat exchanger components in its heating clamber 2 is a spiral-plate heat exchanger 21, and it mainly is made up of shrouding 14, central dividing plate 16 and plurality of sections arc 17.For the distance between control panel and plate, also to add reference column 18 between the weldering plate by certain rule, constitute pyrotechnics and exhaust gases passes 19 thus, cold air and hot-air channel 20 carry out heat exchange.Its main effect of giving hot cell 3 is cold air to be given heat finish cold air and give heat.It utilizes and has reclaimed the waste heat of flue gas on the one hand.Reduce the exhaust temperature of flue gas simultaneously, improved the thermal efficiency of stove.Flue gas is drawn from the exhanst gas outlet 19 of heat exchanger 21, at first passes protective cover 13 mezzanine spaces and discharges out a part of heat, enters chamber, labyrinth 22 then, passes chimney 23 at last, and is aerial through 24 dischargings of cigarette cap.Be to utilize superconducting element 25 on the other hand, make cold air pass two layers of blast cap 26 and wash away superconducting element and give heat.Superconducting element is made up of heat pipe 27 and wing footpath 28.Cold air respectively accounts for half by wing footpath approximately from heat most advanced and sophisticated and pass to air from two sides.

Claims

1, a kind of spiral plate type hot-blast stove, comprise combustion chamber (1), heating clamber (2) and give (3) three parts in hot cell, it is characterized in that in combustion chamber (1), being provided with one group of inclined grate (4), in heating clamber (2), can be according to the Demand Design 1-4 group spiral heat exchanger (21) of caloric value, stay-warm case (13) outside the heating clamber skin designs one is provided with one group of superconductor heat-pipe elements (25) in the central authorities that give hot cell (3).

2, spiral plate type hot-blast stove according to claim 1 is characterized in that this spiral heat exchanger mainly is made up of shrouding (14), central dividing plate (16) and plurality of sections arc.