CN208720512U - The indirect furnace of vane type fuel-firing gas-firing - Google Patents

The indirect furnace of vane type fuel-firing gas-firing Download PDF

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Publication number
CN208720512U
CN208720512U CN201821445223.9U CN201821445223U CN208720512U CN 208720512 U CN208720512 U CN 208720512U CN 201821445223 U CN201821445223 U CN 201821445223U CN 208720512 U CN208720512 U CN 208720512U
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air duct
layer air
heat
firing
exchanger fin
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CN201821445223.9U
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Chinese (zh)
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施艳
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Wuxi Tianyang Drying Equipment Co Ltd
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Wuxi Tianyang Drying Equipment Co Ltd
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Abstract

The utility model relates to a kind of indirect furnaces of vane type fuel-firing gas-firing, including shaft, hot switching path, flue gas blower and multi-layer air channel;The first side wall of shaft is equipped with burner;The first end of hot switching path is connected to shaft, and the second end of hot switching path offers exhanst gas outlet;Exhanst gas outlet is connected with the suction opening of flue gas blower;It is tightly attached to the upper wall installation of shaft in first layer air duct;It is tightly attached to the lower wall installation of hot switching path in second layer air duct;It is tightly attached to the upper wall installation of hot switching path in third layer air duct;The air inlet in air duct is connected to the first end in third layer air duct;The second end in third layer air duct is connected to the second end in second layer air duct;The first end in second layer air duct is connected to the first end in first layer air duct;The second end in first layer air duct offers air outlet;It further include multiple groups heat-exchanger fin;Heat-exchanger fin is installed on wind path wall.The utility model increases the heat exchange efficiency of indirect heater, reduces skin temperature, reduces the use of thermal insulation material.

Description

The indirect furnace of vane type fuel-firing gas-firing
Technical field
The utility model relates to heating furnaces, and in particular to a kind of indirect furnace of vane type fuel-firing gas-firing.
Background technique
Indirect heater heat gas is commonly used in spray drying device.Compared with directly-fired kiln, indirect heater is Make the raised heating method of portion temperature to be heated through heat transfer, the characteristics of indirect heating is homogeneous heating, heating temperature plus Thermal velocity and furnace atmosphere are easy to control.
In the prior art, indirect heater generally only has one layer of heat exchanging air duct, and heat exchange efficiency is lower.And in the prior art In, since temperature is especially high in the combustion chamber of indirect heater, so being easy to radiate outside combustion chamber, it will lead to combustion chamber surface layer Temperature is high, reduces energy use efficiency, so needing to carry out combustion chamber Insulation, the use of thermal insulation material also will increase life Produce cost.
Utility model content
In view of the deficiencies of the prior art, the utility model discloses the indirect furnaces of vane type fuel-firing gas-firing.
Technical solution used by the utility model is as follows:
A kind of indirect furnace of vane type fuel-firing gas-firing, including shaft, hot switching path, flue gas blower and multi-layer air channel;Shaft The first side wall burner is installed;The first end of hot switching path is connected to shaft, and the second end of hot switching path offers Exhanst gas outlet;Exhanst gas outlet is connected with the suction opening of flue gas blower;It is tightly attached to the upper wall installation of shaft in first layer air duct;Second It is tightly attached to the lower wall installation of hot switching path in layer air duct;It is tightly attached to the upper wall installation of hot switching path in third layer air duct;Air duct Air inlet is connected to the first end in third layer air duct;The second end in third layer air duct is connected to the second end in second layer air duct;The The first end in two layers of air duct is connected to the first end in first layer air duct;The second end in first layer air duct offers air outlet;Also wrap Include multiple groups heat-exchanger fin;Heat-exchanger fin is installed on wind path wall.
Its further technical solution are as follows: multiple groups heat-exchanger fin includes first group of heat-exchanger fin, second group of heat exchange Blade and third group heat-exchanger fin;First group of heat-exchanger fin is installed on the lower wall in third layer air duct;Second group of heat exchange leaf Piece is installed on the upper wall or lower wall in second layer air duct;Third group heat-exchanger fin is installed on the lower wall in first layer air duct.
Its further technical solution are as follows: multiple groups heat-exchanger fin includes the 4th group of heat-exchanger fin;The air duct includes Wind inlet section;Wind inlet section is covered on except the second sidewall of shaft;The inner wall of wind inlet section is equipped with the 4th group of heat-exchanger fin;Into The first end of wind section is provided with air inlet;The second end of wind inlet section is connected to the first end in third layer air duct.
Its further technical solution are as follows: hot switching path is parallel with the upper wall of shaft.
Its further technical solution are as follows: the heat-exchanger fin with a thickness of 1.2~2mm.
Its further technical solution are as follows: be enclosed with insulating layer on the outside of the first side wall of shaft and on the outside of air outlet.
Its further technical solution are as follows: the upper wall of shaft and the lower wall in first layer air duct are integrated;First layer air duct Upper wall and the lower wall in second layer air duct are integrated;The upper wall in second layer air duct and the lower wall of hot switching path are integrated;Heat exchange The upper wall in channel and the lower wall in third layer air duct are integrated.
The beneficial effects of the utility model are as follows:
1, the thickness of the heat-exchanger fin of the utility model only has 1.2~2mm, and heat conduction velocity is fast, heat transfer effect more than Use pipe good as heat exchange medium in old-fashioned indirect heater.
2, in the utility model, room temperature pure air enters from the air inlet of wind inlet section, successively passes through wind inlet section, third layer Air duct, second layer air duct and first layer air duct are finally discharged from air outlet.Three layers of air duct increase heat exchange duration significantly, effectively Increase the heat exchange efficiency of indirect heater.
3, in the utility model, wind inlet section is covered on except the second sidewall of shaft, also one as hot switching path Point, so being kept the temperature on the outside of the first side wall of the shaft in addition to air outlet and for installing burner, remaining surface layer is Make not keep the temperature, the skin temperature of shaft, so the heat loss inside shaft is small, has saved heating energy source also below 40 DEG C. And the dosage of thermal insulation material is reduced, save cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Fig. 3 is the schematic diagram in room temperature pure air circulation direction and burning hot gas circulation direction.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
Fig. 1 is the schematic diagram of the utility model.Fig. 2 is the enlarged drawing of part A in Fig. 1.As shown in Figure 1 and Figure 2, Yi Zhongye The indirect furnace of chip fuel-firing gas-firing includes shaft 1, hot switching path 7, flue gas blower 5 and multi-layer air channel.Air duct specifically includes first Layer air duct 8, second layer air duct 9 and third layer air duct 10.
The first side wall of shaft 1 is equipped with burner 2.
Hot switching path 7 is parallel with the upper wall of shaft 1.The first end of hot switching path 7 is connected to shaft 1, and heat exchange is logical The second end in road 7 offers exhanst gas outlet 4.Exhanst gas outlet 4 is connected with the suction opening of flue gas blower 5.Burner, flue gas blower Etc. being the common prior art of existing combustion furnace, it can directly buy commercial goods and install and use.
It is tightly attached to the upper wall installation of shaft 1 in first layer air duct 8.It is tightly attached to the lower wall of hot switching path 7 in second layer air duct 9 Installation.It is tightly attached to the upper wall installation of hot switching path 7 in third layer air duct 10.The of the air inlet 6 in air duct and third layer air duct 10 One end connection.The second end in third layer air duct 10 is connected to the second end in second layer air duct 9.The first end in second layer air duct 9 with The first end in first layer air duct 8 is connected to.The second end in first layer air duct 8 offers air outlet 3.
Specifically, the upper wall of shaft 1 and the lower wall in first layer air duct 8 are integrated.The upper wall and the second layer in first layer air duct 8 The lower wall in air duct 9 is integrated.The upper wall in second layer air duct 9 and the lower wall of hot switching path 7 are integrated.Hot switching path 7 it is upper Wall and the lower wall in third layer air duct 10 are integrated.That is, the upper wall of shaft 1 and the lower wall in first layer air duct 8 share it is same Layer partition.The upper wall in first layer air duct 8 and the lower wall in second layer air duct 9 share same layer partition.The upper wall in second layer air duct 9 and The lower wall of hot switching path 7 shares same layer partition.The upper wall of hot switching path 7 and the lower wall in third layer air duct 10 are shared same Layer partition.
It further include multiple groups heat-exchanger fin.Heat-exchanger fin is installed on wind path wall.Preferably, the thickness of heat-exchanger fin Degree is 1.2~2mm.
Specifically, multiple groups heat-exchanger fin includes first group of heat-exchanger fin 11, second groups of heat-exchanger fins 12 and thirds Group heat-exchanger fin 13.First group of heat-exchanger fin 11 is installed on the lower wall in third layer air duct 10.Second group of heat-exchanger fin 12 It is installed on the upper wall or lower wall in second layer air duct 9.Third group heat-exchanger fin 13 is installed on the lower wall in first layer air duct 8.
Further, multiple groups heat-exchanger fin further includes the 4th group of heat-exchanger fin 15.Air duct further includes wind inlet section 14.Into Wind section 14 is covered on except the second sidewall of shaft 1.The inner wall of wind inlet section 14 is equipped with the 4th group of heat-exchanger fin 15.Wind inlet section 14 first end is provided with air inlet 6.The second end of wind inlet section 14 is connected to the first end in third layer air duct 10.
Further, insulating layer 16 is enclosed on the outside of the first side wall of shaft 1 and on the outside of air outlet 3.
Fig. 3 is the schematic diagram in room temperature pure air circulation direction and burning hot gas circulation direction.As shown in figure 3, in shaft 1 Hot-air under the instruction of arrow C, by passing through in shaft 1 and hot switching path 7, taken out from exhanst gas outlet 4 by flue gas blower 5 Out.
The utility model is three layers by the air duct of indirect heater is increased, and heat-exchanger fin is equipped in every layer as heat Exchange media.Heat-exchanger fin is equivalent to the outer wall for being welded on hot switching path 7 and shaft 1, then the hot-air transmitting in shaft 1 Heat-exchanger fin is set to heat up by heat exchange to heat-exchanger fin, normal temperature air passes through the air duct for welding full heat-exchanger fin, with leaf Piece contact heat-exchanging.
Since the thickness of heat-exchanger fin only has 1.2~2mm, heat transfer effect is made more than in old-fashioned indirect heater with pipe It is good for heat exchange medium.Room temperature pure air is indicated by the arrow B in Fig. 3, is entered from the air inlet 6 of wind inlet section 14, is successively passed through Wind inlet section 14, third layer air duct 10, second layer air duct 9 and first layer air duct 8 are crossed, is finally discharged from air outlet 3.Three layers of air duct are big Heat exchange duration is increased greatly, effectively increases the heat exchange efficiency of indirect heater.
In the present invention, second group of heat-exchanger fin 12 is installed on the upper wall or lower wall in second layer air duct 9.According to For the maximum demand of heat exchange efficiency, second group of heat-exchanger fin 12 should be installed on the upper wall in second layer air duct 9.But in reality When border makes, it is contemplated that the practicability of technology, the heat-exchanger fin of this layer that freeze need to enter the interior of second layer air duct 9 Portion can hold up stack shell for large-scale indirect burning furnace, and worker inside freezes at station, if furnace is little indirectly, cylinder Less than 1 meter, worker can not inside operate the diameter of body, it is contemplated that welding difficulty when worker makes, it can be by heat exchange leaf Piece 12 is welded to the lower wall of second layer wind path wall 9.
It is covered on due to wind inlet section 14 except the second sidewall of shaft 1, also as a part of hot switching path, so removing It is kept the temperature on the outside of the first side wall of air outlet 3 and the shaft 1 for installing burner 2, even if remaining surface layer does not have Heat preservation, the skin temperature of shaft 1, so the heat loss inside shaft is small, have saved heating energy source also below 40 DEG C.
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model Range is referring to claim, and without prejudice to the basic structure of the utility model, the utility model can make any shape The modification of formula.

Claims (7)

1. a kind of indirect furnace of vane type fuel-firing gas-firing, it is characterised in that: including shaft (1), hot switching path (7), flue gas blower (5) and multi-layer air channel;The first side wall of shaft (1) is equipped with burner (2);The first end of hot switching path (7) and shaft (1) Connection, the second end of hot switching path (7) offer exhanst gas outlet (4);The suction opening of exhanst gas outlet (4) and flue gas blower (5) It is connected;It is tightly attached to the upper wall installation of shaft (1) in first layer air duct (8);It is tightly attached to hot switching path (7) in second layer air duct (9) Lower wall installation;It is tightly attached to the upper wall installation of hot switching path (7) in third layer air duct (10);The air inlet (6) and third in air duct The first end connection in layer air duct (10);The second end in third layer air duct (10) is connected to the second end of second layer air duct (9);Second The first end in layer air duct (9) is connected to the first end of first layer air duct (8);The second end in first layer air duct (8) offers outlet air Mouth (3);It further include multiple groups heat-exchanger fin;Heat-exchanger fin is installed on wind path wall.
2. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: multiple groups heat-exchanger fin includes first Group heat-exchanger fin (11), second group of heat-exchanger fin (12) and third group heat-exchanger fin (13);First group of heat-exchanger fin (11) it is installed on the lower wall of third layer air duct (10);Second group of heat-exchanger fin (12) is installed on the upper wall of second layer air duct (9) Or lower wall;Third group heat-exchanger fin (13) is installed on the lower wall of first layer air duct (8).
3. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: multiple groups heat-exchanger fin includes the 4th Group heat-exchanger fin (15);The wind inlet section (14) that the air duct includes;Wind inlet section (14) be covered on shaft (1) second sidewall it Outside;The inner wall of wind inlet section (14) is equipped with the 4th group of heat-exchanger fin (15);The first end of wind inlet section (14) is provided with air inlet (6);The second end of wind inlet section (14) is connected to the first end of third layer air duct (10).
4. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: hot switching path (7) and shaft (1) Upper wall it is parallel.
5. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: the heat-exchanger fin with a thickness of 1.2~2mm.
6. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: on the outside of the first side wall of shaft (1) Insulating layer (16) are enclosed with air outlet (3) outside.
7. the indirect furnace of vane type fuel-firing gas-firing as described in claim 1, it is characterised in that: the upper wall and first layer of shaft (1) The lower wall in air duct (8) is integrated;The upper wall in first layer air duct (8) and the lower wall of second layer air duct (9) are integrated;Second layer air duct (9) lower wall of upper wall and hot switching path (7) is integrated;Under the upper wall and third layer air duct (10) of hot switching path (7) Wall is integrated.
CN201821445223.9U 2018-09-04 2018-09-04 The indirect furnace of vane type fuel-firing gas-firing Active CN208720512U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821445223.9U CN208720512U (en) 2018-09-04 2018-09-04 The indirect furnace of vane type fuel-firing gas-firing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821445223.9U CN208720512U (en) 2018-09-04 2018-09-04 The indirect furnace of vane type fuel-firing gas-firing

Publications (1)

Publication Number Publication Date
CN208720512U true CN208720512U (en) 2019-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821445223.9U Active CN208720512U (en) 2018-09-04 2018-09-04 The indirect furnace of vane type fuel-firing gas-firing

Country Status (1)

Country Link
CN (1) CN208720512U (en)

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