CN202013087U

CN202013087U - Direct combustion hotblast stove

Info

Publication number: CN202013087U
Application number: CN2011201165520U
Authority: CN
Inventors: 张如剑; 徐干林; 孙海燕
Original assignee: JIANGSU JIANQIAO PAINT ENGINEERING CO LTD
Current assignee: JIANGSU JIANQIAO PAINT ENGINEERING CO LTD
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2011-10-19
Anticipated expiration: 2021-04-20

Abstract

The utility model relates to a direct combustion hotblast stove, which comprises a chamber body 1, a circulation blower 2, a filter plate 3 and a burner 5, wherein the circulation blower 2 is arranged at the end of the chamber body 1 and is inserted into an inner cavity of the chamber body 1; the filter plate 3 and the burner 5 are positioned in the inner cavity of the chamber body 1; and an air suction inlet 6, an air supply outlet 7 and an EGR (exhaust gas recirculation) tube 4 are arranged on the chamber body 1. The hotblast stove is characterized in that an inner combustion cylinder 9 and an outer combustion cylinder 8 are fixed on the wall body of the inner cavity of the chamber body 1, wherein the inner combustion cylinder 9 and the outer combustion cylinder 8 are sleeved with each other; a nozzle of the burner 5 is arranged in the inner combustion cylinder 9; and a clearance is left between the inner combustion cylinder 9 and the outer combustion cylinder 8 and is communicated with the EGR tube 4. The hotblast stove has the advantages that: 1, the burner 5 is arranged in the opened combustion cylinders 8 and 9, the flame can directly burn in the circulation air, and the generated heat can directly heat the circulation air, therefore, the hotblast stove has high thermal efficiency and high heating speed, saves energy and is environmentally friendly; 2, the structure is simple, and the production cost is low; and 3, the functions of waste gas collection and burning are integrated into one.

Description

The direct-combustion hot air stove

Technical field

The utility model relates to the drying plant in the application production, particularly a kind of direct-combustion hot air stove.The heat energy that burning can be produced, direct and circulating air exchanges, and has waste gas recovery burning function.

Background technology

The engineering goods of industries such as engineering machinery, engine, vehicle bridge all need product surface is carried out anticorrosion, decoration, are coated with protective coating, dry processing again.Present hot-blast stove, be equipped with burner hearth and indirect type heat exchanger in its chamber body, its burner hearth adopts resistant to elevated temperatures corrosion resistant plate, heat exchanger employing corrosion resistant plate is made rectangular-shaped or is directly processed with stainless steel tube, the burner of combustor is inserted in the airtight burner hearth, and the heat energy of generation carries out the indirect type heat exchange by heat exchanger and circulating air.Drying plant is a highly energy-consuming equipment, drives under the situation about being becoming tight in energy day, adopts the hot-blast stove of this indirect type heat exchange, and not only intensification is slow, efficient is low, and thermal waste is serious, plant maintenance complexity, manufacturing cost height.

Summary of the invention

Technical barrier to be solved in the utility model is, overcomes above-mentioned deficiency, and a kind of direct-combustion hot air stove is provided, and it is simple in structure, thermal efficiency height, and energy-conserving and environment-protective, cost is low, the recyclable burning again of waste gas.

Technical solution of the present utility model is, comprise chamber body 1, circulating fan 2, filter 3 and combustor 5, circulating fan 2 is located at chamber body 1 end and is inserted its inner chamber, filter 3 and combustor 5 are located in the inner chamber of chamber body 1, filter 3 is fixed on chamber body 1 inwall of circulating fan 2 air outlet front ends, combustor 5 is fixed on the chamber body 1 and is overhung in the inner chamber of chamber body 1, can external fuel gas source; Chamber body 1 is provided with inlet scoop 6 and air outlet 7 and exhaust gas recirculation pipe 4, it is characterized in that: be fixed with the burning inner core 9 and the burning urceolus 8 that are nested with mutually on the chamber body 1 inner chamber wall body, the nozzle of combustor 5 is located in the burning inner core 9; Be provided with the space between burning inner core 9 and the burning urceolus 8, its space communicates with exhaust gas recirculation pipe 4.

Burning urceolus 8 inwalls of burning inner core 9 front ends are provided with diversion platform 11.

The end of burning inner core 9 is filled with refractory brick 10.

Chamber body 1 inwall on burning inner core 9 front end opposites is provided with fireguard 12.

The advantage that the utility model and prior art compare and possessed: the one, combustor places open combustion barrel, flame directly burns in circulating air, the heat energy that produced of burning, direct heat cycles air, thermal efficiency height, energy-conservation and programming rate is fast; The 2nd, there are not internal combustion furnace and indirect type heat exchanger, simple in structure, low cost of manufacture, thermal efficiency height, energy-conservation; The 3rd, the exhaust gas recirculation pipe communicates with outer combustion barrel, and outer combustion barrel is provided with diversion platform, and the waste gas of backflow is concentrated with abundant participation burning to flame zone, and organic exhaust gas is fully used.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A profile of Fig. 1.

Number in the figure: 1-chamber body, 2-blower fan, 3-filter, the 4-waste gas mouth that strile-backs, 5-combustor, 6-inlet scoop, 7-air outlet, the 8-urceolus that burns, the 9-inner core that burns, 10-refractory brick, 11-diversion platform, 12-fireguard.

The specific embodiment

The utility model comprises chamber body 1, circulating fan 2, filter 3 and combustor 5.Circulating fan 2 is high temperature resistant hot blast circulating fan 2, and its motor is in chamber body 1 outside, and the impeller plug-in type is installed in the chamber body 1.Filter 3 and combustor 5 are located in the inner chamber of chamber body 1, and filter 3 is fixed on chamber body 1 inwall of circulating fan 2 air outlet front ends, and combustor 5 is fixed on the chamber body 1 and is overhung in the inner chamber of chamber body 1, can external fuel gas source; Chamber body 1 is provided with inlet scoop 6 and air outlet 7 and exhaust gas recirculation pipe 4,

Be fixed with the burning inner core 9 and the burning urceolus 8 that are nested with mutually on the chamber body 1 inner chamber wall body, the nozzle of combustor 5 is located in the burning inner core 9.Be provided with the space between burning inner core 9 and the burning urceolus 8, its space communicates with exhaust gas recirculation pipe 4.Waste gas between inner/outer tube after preheating, be sent to the combustion flame district and burn, the heat energy that the burning organic exhaust gas produces, after heat energy that the combustor burning produces mixes, direct heat cycles air.Burning urceolus 8 inwalls of burning inner core 9 front ends are provided with diversion platform 11, and the waste gas of introduction is concentrated with abundant burning to flame zone.

The inner/

outer tube

9,8 of combustion furnace and the welding of chamber body 1 inwall corrosion resistant plate.Inner core 9 materials are high temperature resistant stainless steel plates, and urceolus 8 materials are ordinary stainless steel plates.The end of burning inner core 9 is filled with refractory brick 10, in case heat outwards conducts, avoids the combustor temperature too high.Chamber body 1 inwall on burning inner core 9 front end opposites is provided with fireguard 12, is burnt out by flame with the inwall that prevents chamber body 1.

Inlet scoop 6 of the present utility model and air outlet 7 be by air duct flange, is connected with air blow and return device on the drying chamber body.During work, circulating air in the 6 inlet chamber bodies 1 of inlet scoop, after direct heat exchange and 3 filtrations of high temperature filtration plate, is delivered in the drying chamber by air outlet 7 under the effect of circulating fan 2 again, and workpiece is heated.

Body 1 general the employing in the double-layer plate in chamber filled out the rock cotton board structure; main framing is done skeleton with rectangle square steel tube and shaped steel, and inside panel corrosion resistant plate, flanging are then with CO2 gas copper wire protection weldering; the insulation material rock wool is tamped in the centre, and exterior panel forms with the chromatic steel sandwich plate riveted joint of stream shape.

Inlet scoop 6 offer direction, vertical with the inside and outside

cylindrical shell

9,8 of combustion furnace, air draught does not just influence the smooth combustion of flame like this.Combustor is connected with 1 of chamber body, is connected with bolt by ring flange.

Be provided with for People's Bank of China's side door of observing and overhauling in the side of chamber body 1, be convenient to equipment cleaning.Temperature control of the present utility model is adopted temperature automatically controlled, and ratio is regulated, and temperature control is more accurate.Safe combustion in the chamber body 1 by two cut-out solenoid control, and is provided with the overtemperature alarm device.

Combustor 5 can fuel metering and the flow proportional of combustion air, guarantees that fuel is in optimum state with the Air mixing ratio.Combustor 5 has enough reliabilities and security to guarantee, gas pipeline is provided with low-voltage protective switch and two protection magnetic valve, and the combustion air pipeline is provided with pressure detection switch.In the air outlet 7 of chamber body 1 and drying room, be provided with the thermometric thermal resistance, can convert temperature signal to analog quantity by PLC,, regulate the flow fuel in the pipeline by regulating proportional controller, realize to temperature in the drying room automatically, accurately control.

Claims

1. direct-combustion hot air stove, comprise chamber body (1), circulating fan (2), filter (3) and combustor (5), circulating fan (2) is located at chamber body (1) end and is inserted its inner chamber, filter (3) and combustor (5) are located in the inner chamber of chamber body (1), filter (3) is fixed on chamber body (1) inwall of circulating fan (2) air outlet front end, combustor (5) is fixed on chamber body (1) and goes up and be overhung in the inner chamber of chamber body (1), can external fuel gas source; Chamber body (1) is provided with inlet scoop (6), air outlet (7) and exhaust gas recirculation pipe (4), it is characterized in that: be fixed with the burning inner core (9) and the burning urceolus (8) that are nested with mutually on chamber body (1) the inner chamber wall body, the nozzle of combustor (5) is located in the burning inner core (9); Be provided with the space between burning inner core (9) and the burning urceolus (8), its space communicates with exhaust gas recirculation pipe (4).

2. a kind of direct-combustion hot air stove as claimed in claim 1 is characterized in that: burning urceolus (8) inwall of burning inner core (9) front end is provided with diversion platform (11).

3. a kind of direct-combustion hot air stove as claimed in claim 1 is characterized in that: the end of burning inner core (9) is filled with refractory brick (10).

4. a kind of direct-combustion hot air stove as claimed in claim 1 is characterized in that: chamber body 1 inwall on burning inner core (9) front end opposite is provided with fireguard (12).