Bottom heated type energy-saving aluminum rod furnace
Technical field
The present invention relates to a kind of heating furnace, in particular to a kind of aluminum-bar heating furnace.
Background technique
Aluminum profile is a kind of common material in construction and decoration field.Aluminum profile is needed first to be sent into aluminium bar before shaping and be heated
500 degrees Celsius or more are heated in furnace just can be carried out extrusion forming.Traditional aluminum-bar heating furnace is usually to use upper heating method,
That is, high-temperature flue gas sprays into burner hearth from upper furnace, the aluminium bar in burner hearth is heated.However, this upper heating method is easy
Cause aluminium bar bottom temp lower, the final final product quality for influencing aluminum profile.
A kind of novel rapid fuel gas aluminum bar heating furnace as disclosed in Chinese patent discloses No. 202297690U, including furnace
Body, furnace body support, aluminium bar conveying roller, roller support, flue gas jet pipe, smoke conveying duct, waste heat recovery pipe road;Wherein flue gas jet pipe
One end connects upper of furnace body, and the other end connects smoke conveying duct;Waste heat recovery pipe road is located at lower portion of furnace body and is connected with furnace body;
Aluminium bar conveying roller is located in roller support, and aluminium bar conveying roller passes through furnace body, the axis direction of aluminium bar conveying roller and the axis side of furnace body
To vertical, aluminium bar longitudinal arrangement is on aluminium bar conveying roller.As it can be seen that the novel rapid fuel gas aluminum bar heating furnace is using upper heating
Mode, this is easy to cause aluminium bar uneven heating even.
For another example Chinese patent discloses a kind of aluminum-bar heating furnace of No. 202470754U announcement, includes furnace body, further includes
There is the fan housing covered on furnace body and be placed in bottom of furnace body and its flame is directly in the surface heated burner of aluminium bar to be processed,
In, fan housing completely covers aluminium bar to be processed, while the fan housing is in up-small and down-big structure, and its air duct at top and burner
Circulating fan be connected, pass through above-mentioned circulating fan and the intracorporal hot wind of furnace driven to form negative-pressure cyclic.Although the aluminium bar heats
Furnace using bottom-heated mode, however its there are still following disadvantage or deficiencies: (1), it uses a burner, and produces
Raw flame is just injected directly into burner hearth bottom without shunting, and causes the temperature at burner hearth center excessively high, and the temperature of burner two sides
It is lower;(2), similarly, the temperature of the burner hearth leading portion of neighbouring burner is higher, and the temperature of the burner hearth back segment far from burner compared with
It is low;(3), its special up-small and down-big fan housing construction will lead to gradually remote after flue gas is turned back from aluminium bar lower section to above aluminium bar
Upper surface from aluminium bar, so that the aluminium bar above neighbouring burner be caused to cannot get top heating.
It is badly in need of in the industry therefore it provides a kind of aluminum-bar heating furnace that aluminium bar can be made to be heated evenly, improve heating efficiency becomes
It solves the problems, such as.
Summary of the invention
The object of the present invention is to provide a kind of bottom heated type energy-saving aluminum rod furnaces, more uniform can efficiently heat aluminium
Stick, and energy-saving and emission-reduction.
According to the solution of the present invention, a kind of bottom heated type energy-saving aluminum rod furnace is provided, comprising: inside is equipped with the heating furnace of burner hearth
Ontology is used at least one burner of jet flames, neighbouring heating furnace sheet into burner hearth set on the front bulkhead for heating furnace body
The aft bulkhead of body is set to the exhanst gas outlet of the roof of heating furnace body and being used for along the longitudinal direction setting for heating furnace body
Aluminium bar is delivered to the transmission device heated in burner hearth.Bottom heated type energy-saving aluminum rod furnace further comprises being located at transmission device and adding
The aft bulkhead of fireguard between the roof of hot stove ontology, fireguard self-heating furnace body prolongs to the front bulkhead of heating furnace body
It stretches, flue gas reentrant pathway is formed between the elongated end of fireguard and the front bulkhead for heating furnace body, thus by burner hearth along heating furnace
The vertical direction of ontology is successively divided into lower heating zone between bottom wall and transmission device, is located at transmission device and gear fire
Upper heating zone between plate and the flue gas between fireguard and roof are turned back area.Wherein, at least one burner exists
Corresponding to lower heating zone position be set to heating furnace body front bulkhead so that combustion product gases successively undergo lower heating zone,
Upper heating zone, flue gas reentrant pathway and flue gas turn back and burner hearth are discharged by exhanst gas outlet behind area.
Preferably, bottom heated type energy-saving aluminum rod furnace further comprises that the bottom wall of self-heating furnace body prolongs upwards in the vertical direction
The front bulkhead of the first flow distribution plate and self-heating furnace body stretched extend back along the longitudinal direction and with the first flow distribution plate end phase
The second flow distribution plate even.Front bulkhead, bottom wall, the first flow distribution plate, the second flow distribution plate and heat furnace body side wall between sky
Between formed flame shunting room, at least one burner correspond to flame shunting room position be set to heating furnace body front end
Wall.
Selectively, the position corresponding to flame shunting room is set to the burner and heating furnace of the front bulkhead of heating furnace body
The distance between bottom wall of ontology be heat furnace body vertical height 1/8th to a quarter.
Selectively, the first flow distribution plate includes that several first split channels make flame along the longitudinal direction from flame shunting room
Spray into lower heating zone uniformly backward to heat the aluminium bar for being located at burner hearth posterior segment upwards from below.
Preferably, the first flow distribution plate is parallel to front bulkhead setting and is the vertical of heating furnace body with the distance between front bulkhead
To length 1/5th to one third.
Selectively, the second flow distribution plate include several second tap holes make flame in the vertical direction from flame shunting room to
The upper lower heating zone that uniformly sprays into heat the aluminium bar for being located at burner hearth leading portion upwards from below.
Preferably, the second flow distribution plate adjacent to transmission device lower surface and be parallel to bottom wall setting, the second flow distribution plate and bottom
The distance between wall is a quarter for the vertical height for heating furnace body to half.
It preferably, is the 15%~30% of flame total amount by the flame of the second flow distribution plate, remaining flame passes through first
Flow distribution plate sprays into lower heating zone.
Selectively, fireguard is parallel to bottom wall setting, and the distance between fireguard and bottom wall are to heat erecting for furnace body
To 5th/3rd to six/4ths of height, the distance between the elongated end and the front bulkhead of heating furnace body of fireguard are heating
/ 6th of the longitudinal length of furnace body are to a quarter.
Wherein, in the transverse direction of heating furnace body, fireguard, the first flow distribution plate, the second flow distribution plate are respectively from side
Wall extends to another side wall.
Selectable, bottom heated type energy-saving aluminum rod furnace further comprises flue gas main pipeline and smoke backflow pipeline, flue gas master
Pipeline is connected to the exhanst gas outlet of heating furnace body flue gas is expelled to chimney, and smoke backflow pipeline is connected to flue gas main pipeline
It is combustion-supporting the partial fume in flue gas main pipeline is back at least one burner.
Preferably, it is provided with blower in smoke backflow pipeline, for flue gas to be pumped to burner.
Wherein, gap of the flame across aluminium bar is turned back under after reaching fireguard to heat aluminium bar down from above.
Preferably, the flue gas in smoke backflow pipeline is calculated as the amount of flue gas emission in flue gas main pipeline with volumn concentration
10%~30%.
Preferably, bottom heated type energy-saving aluminum rod furnace includes two burnings for being arranged at intervals at the front bulkhead of heating furnace body
Device.
Selectable, fireguard, the first flow distribution plate, the second flow distribution plate are that heat-resistance stainless steel is made, such as 310 stainless
Steel.
Selectively, transmission device can be conveyer belt, transfer roller or other type transmission devices.
Selectively, the fuel of burner can choose natural gas, coal gas, liquefied petroleum gas or fuel oil.
The beneficial effects of the present invention are: (1), the first flow distribution plate of setting make flame spray into lower section heating from flame shunting room
Area is with heating is arranged the second flow distribution plate and sprays into flame from flame shunting room positioned at the aluminium bar of burner hearth posterior segment upwards from below
Lower heating zone is located at the aluminium bar of burner hearth leading portion, the aluminium bar thermally equivalent of section before, during and after making to heat upwards from below;(2),
Fireguard is set, turns back after the flame arrival fireguard in gap under between aluminium bar and continues to heat aluminium bar, improve aluminium bar
Heating efficiency;(3), it is combustion-supporting to be back to burner by setting smoke backflow pipeline for the partial fume in flue gas main pipeline, sufficiently benefit
The fume afterheat generated with heating aluminium bar, while reducing the production quantity of nitrogen oxides, reduce the pollution to environment, saves heating
The energy of aluminium bar.
Detailed description of the invention
Fig. 1 shows the schematic front view of heated type energy-saving aluminum rod furnace in bottom of the present invention.
Fig. 2 shows the schematic top plan views of heated type energy-saving aluminum rod furnace in bottom of the present invention.
Specific embodiment
Fig. 1, a kind of embodiment according to the present invention are please referred to, bottom heated type energy-saving aluminum rod furnace includes: internal equipped with furnace
The heating furnace body 100 of thorax is arranged at intervals at two of the front bulkhead 101 of heating furnace body 100 for the jet flames into burner hearth
A burner 200, the neighbouring aft bulkhead 102 for heating furnace body 100 are set to the exhanst gas outlet of the roof 103 of heating furnace body 100
300 and along heating furnace body 100 longitudinal direction setting for aluminium bar 900 to be delivered in burner hearth plus passage of heat dress
400 are set, in the non-limiting embodiment, transmission device 400 is transfer roller.
Wherein, bottom heated type energy-saving aluminum rod furnace further comprises the roof positioned at transmission device 400 and heating furnace body 100
Fireguard 150 between 103, the front bulkhead of the aft bulkhead 102 of 150 self-heating furnace body 100 of fireguard to heating furnace body 100
101 extend, and flue gas reentrant pathway is formed between the elongated end 155 of fireguard 150 and the front bulkhead 101 for heating furnace body 100
140, so that the vertical direction by burner hearth along heating furnace body is successively divided between bottom wall 104 and transmission device 400
Lower heating zone 110, the upper heating zone 120 between transmission device 400 and fireguard 150 and be located at fireguard 150
Flue gas between roof is turned back area 130.Burner 200 is set to the front bulkhead 101 of heating furnace body 100, so that combustion product gases
Lower heating zone 110, upper heating zone 120, flue gas reentrant pathway 140 and flue gas is successively undergone to turn back behind area 130 by flue gas
300 discharge burner hearth of outlet.In the non-limiting embodiment, the fuel in burner 200 is liquefied petroleum gas.
It further include flame point as a kind of non-limiting embodiment, in the heating furnace body of bottom heated type energy-saving aluminum rod furnace
Flow chamber 800.Flame shunting room 800 includes the first shunting that the bottom wall 104 of self-heating furnace body 100 upwardly extends in the vertical direction
The front bulkhead 101 of plate 810 and self-heating furnace body 100 extend back along the longitudinal direction and with 810 end phase of the first flow distribution plate
The second flow distribution plate 820 even.Front bulkhead 101, bottom wall 104, the first flow distribution plate 810, the second flow distribution plate 820 and heating furnace body
Space between 100 two sidewalls 105,106 forms flame shunting room 800.Two burners 200 are corresponding to flame shunting room
800 location interval is set to the front bulkhead 101 of heating furnace body 100, the longitudinal axis and heating furnace body 100 of burner 200
The distance between bottom wall 104 for heating furnace body 100 vertical height 1/5th.
Wherein, fireguard 150, the first flow distribution plate 810, the second flow distribution plate 820 are in the transverse direction for heating furnace body 100
On, the one side wall 105 of self-heating furnace body 100 extends to another side wall 106 respectively.
In the non-limiting embodiment, fireguard 150, the first flow distribution plate 810, the second flow distribution plate 820 by 310 not
Rust steel is made.
Wherein, the first flow distribution plate 810 includes that several first split channels 811 make flame along the longitudinal direction from flame shunting
Room 800 sprays into lower heating zone 110 uniformly backward to heat the aluminium bar 900 for being located at burner hearth posterior segment upwards from below.Second point
Flowing plate 820 includes that several second tap holes 821 make flame uniformly spray into lower section upwards from flame shunting room 800 in the vertical direction
Heating zone 110 is located at the aluminium bar 900 of burner hearth leading portion to heat upwards from below.
In the non-limiting embodiment, the flame by the second flow distribution plate 820 is about the 20% of flame total amount, remaining
Flame by the first flow distribution plate 810 spray into lower heating zone 110.
In the non-limiting embodiment, the first flow distribution plate 810 is parallel to the setting of front bulkhead 101 and between front bulkhead
Distance be heat furnace body 100 longitudinal length about one third.Second flow distribution plate 820 is under transmission device 400
Surface and be parallel to bottom wall 104 setting, the distance between the second flow distribution plate 820 and bottom wall 104 be heating furnace body 100 it is vertical
The about one third of height.Fireguard 150 is parallel to the setting of bottom wall 104, and the distance between fireguard 150 and bottom wall are heating furnace
About 4/5ths of the vertical height of ontology 100.The elongated end 155 of fireguard 150 and the front bulkhead 101 of heating furnace body 100
The distance between for heating furnace body 100 longitudinal length about 1/6th.
In the non-limiting embodiment, bottom heated type energy-saving aluminum rod furnace further comprises flue gas main pipeline 500 and cigarette
Gas reflux line 600, flue gas main pipeline 500 are connected to so that flue gas is expelled to chimney (figure with the exhanst gas outlet 300 of heating furnace body
Do not show), smoke backflow pipeline 600 is connected to so that the partial fume in flue gas main pipeline 500 is back to combustion with flue gas main pipeline 500
Burner 200 is combustion-supporting.
Wherein, blower 700 is provided in smoke backflow pipeline 600, for flue gas to be pumped to burner 200, wherein
Flue gas in smoke backflow pipeline 600 is calculated as about 20% of the amount of flue gas emission in flue gas main pipeline 500 with volumn concentration.
Fig. 2 shows the schematic top plan views of heated type energy-saving aluminum rod furnace in bottom of the present invention, for clarity, part member therein
Part is not shown.As shown in Fig. 2, using spaced two burners 200 in the non-limiting embodiment.
In use, spaced two burners 200 jet flames into burner hearth, so that in the transverse direction of burner hearth
Homogeneous heating on direction.Also, the flame that two burners 200 spray into burner hearth divides via flame shunting room 800 for fire backward
Flame and upward flame so that before, during and after in burner hearth section all homogeneous heatings of aluminium bar 900.In addition, flame passes through aluminium bar 900
Between gap reach fireguard 150 after turn back under, again down from above heat aluminium bar 900, substantially increase heating effect
Rate.
Although detailed description of the present invention preferred embodiment herein, it is to be understood that the invention is not limited to this
In the specific structure being described in detail and show, without departing from the spirit and scope of the present invention can be by the technology of this field
Personnel realize other modifications and variant.For example, burner can be arranged according to actual conditions in the front bulkhead of heating furnace body
Number, alternatively, adjusting the distance between the first flow distribution plate and heating furnace body front bulkhead according to use condition, the second flow distribution plate heats
The elongated end and heating furnace of the distance between the distance between furnace body bottom wall, fireguard and heating furnace body bottom wall or fireguard
The distance between ontology front bulkhead.In addition, the temperature or pressure and other parameters of system can be according to concrete application conditions at this
It is suitably chosen in the disclosed range of invention.