A kind of heat-circulation structure of aluminium bar single rod furnace
Technical field
The utility model relates to aluminium production equipment technology, in particular to a kind of thermal cycle knot of aluminium bar single rod furnace
Structure.
Background technique
Before producing various aluminium products using the mode of aluminium bar extrusion forming, need first to heat aluminium bar, aluminium bar list
Stick furnace (the aluminium bar single rod furnace that aluminium bar single rod furnace mentioned in this article refers to tunnel type) is a kind of for heating to aluminium bar
Equipment is provided with heating chamber in the furnace body of general aluminium bar single rod furnace, is provided with multiple burners along its length in heating chamber,
Heating chamber front end is provided with preheating chamber, is provided with exhaust apparatus at preheating chamber;In heating chamber, combustion gas and air mix aluminium bar
It sprays burning from burner afterwards to heat aluminium bar, the flue gas of generation can flow into preheating chamber to preceding toward front along heating chamber
The aluminium bar of side is preheated, and last flue gas can be discharged by exhaust apparatus.
Since aluminium bar temperature is generally required no more than 530 DEG C, and about 1300 DEG C to 1400 DEG C of flame temperature, the flue gas of generation
About 1000 DEG C, when flue gas is flowed along heating chamber, reheating can be carried out to proparea aluminium bar, accurate temperature control can not be carried out,
There is the danger of molten stick, even to avoid this phenomenon, the heating temperature for the preceding heating zone that can generally reduce by adjustment of combustion gas flow
Degree, will cause the aluminium bar core table temperature difference (i.e. internal-external temperature difference) increasing when avoiding molten stick, but being provided with so again, for high-end industry
The extruding of material is unfavorable.
As it can be seen that the prior art has much room for improvement and improves.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of heat of aluminium bar single rod furnace
Loop structure, it is intended to solve the problems, such as that high-temperature flue gas leads to proparea aluminium bar reheating along heating chamber flowing.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of heat-circulation structure of aluminium bar single rod furnace, the heating chamber including being equipped with multiple burners, is arranged in heating chamber front end
Preheating chamber, the runner of heating chamber side, and the exhaust apparatus for being vented from preheating chamber are set;The heating chamber and pre-
Hot cell isolation, heating chamber are connected to runner, and runner is connected to preheating chamber.
In the heat-circulation structure of the aluminium bar single rod furnace, the heating chamber is provided with multiple partitions along its length, often
The perforation for passing through for aluminium bar is offered on block partition, heating chamber is divided into multiple sub- heating chambers by these partitions, each
Sub- heating chamber is connected to runner.
In the heat-circulation structure of the aluminium bar single rod furnace, the runner is one and is arranged on the downside of heating chamber and along heating
The cavity that chamber whole length direction extends.
In the heat-circulation structure of the aluminium bar single rod furnace, the exhaust apparatus includes that one end is connected to preheating chamber front
Exhaust pipe, and the air exhauster of the exhaust pipe other end is set.
In the heat-circulation structure of the aluminium bar single rod furnace, the runner is connected to the rear end of preheating chamber.
The heat-circulation structure of the aluminium bar single rod furnace further includes the snorkel for conveying air to each burner, and
Heat exchanger;The exhaust pipe and snorkel are connected to the heat exchanger to exchange heat.
The utility model has the advantages that
The utility model provides a kind of heat-circulation structure of aluminium bar single rod furnace, and when work, aluminium bar carries out in heating chamber
Heating, high-temperature flue gas flows forward under the action of exhaust apparatus, and since heating chamber is isolated with preheating chamber, heating chamber and runner connect
Logical, runner is connected to preheating chamber, and flue gas can first flow into runner, then flow to preheating chamber along runner, finally be discharged, will not be along heating chamber
Flowing leads to proparea aluminium bar reheating.
Detailed description of the invention
Fig. 1 is the schematic diagram of the heat-circulation structure of aluminium bar single rod furnace provided by the utility model.
Specific embodiment
The utility model provides a kind of heat-circulation structure of aluminium bar single rod furnace, to make the purpose of this utility model, technical side
Case and effect are clearer, clear, and the utility model is further described as follows in conjunction with drawings and embodiments.It should manage
Solution, specific embodiment described herein only to explain the utility model, are not used to limit the utility model.
Herein, the mobile direction of aluminium bar, the i.e. side A in Fig. 1 are referred to after;It is preceding and rear reversed, i.e. the side B in Fig. 1.
Referring to Fig. 1, a kind of heat-circulation structure of aluminium bar single rod furnace provided by the utility model, including it is equipped with multiple burners
Heating chamber 1, the preheating chamber 2 of heating chamber front end is set, the runner 3 of heating chamber side is set, and for from preheating chamber
The exhaust apparatus 4 of exhaust;The heating chamber is isolated with preheating chamber, and heating chamber is connected to runner, and runner is connected to preheating chamber.
When work, aluminium bar is heated in heating chamber, and high-temperature flue gas flows forward under the action of exhaust apparatus, due to
Heating chamber is isolated with preheating chamber, and heating chamber is connected to runner, and runner is connected to preheating chamber, and flue gas can first flow into runner, then along stream
Road flows to preheating chamber, is finally discharged, and will not flow along heating chamber and lead to proparea aluminium bar reheating, to improve temperature control
Accuracy, avoid molten stick, and not will cause the increasing of the aluminium bar core table temperature difference.
Specifically, the heating chamber 1 is provided with multiple partitions 5 along its length, offer on every piece of partition for supplying
Heating chamber is divided into multiple sub- heating chambers by the perforation that aluminium bar 90 passes through, these partitions, and every sub- heating chamber connects with runner 3
It is logical.By these partitions, heating chamber can be isolated with preheating chamber, while can avoid interfering with each other between different sub- heating chambers, from
And greatly improve temperature controlled accuracy.
In the present embodiment, the runner 3 is a setting in 1 downside of heating chamber and extends along heating chamber whole length direction
Cavity.In fact, runner 3 or an appendix, are respectively connected with connection branch between the appendix and each sub- heating chamber
It manages, the flue gas in each sub- heating chamber flows to preheating chamber after entering appendix by respective connecting branch;But this structure with
The technical solution of the application is compared, and structure is complicated, and production cost and maintenance cost are higher.In addition, runner may be not necessarily provided at
It on the downside of heating chamber, also can be set in left side, right side or upside, it is in order to facilitate it that runner, which is arranged on the downside of heating chamber, herein
The arrangement of its component.
Specifically, the exhaust apparatus 4 includes the exhaust pipe 4.1 that one end is connected to 2 front of preheating chamber, and setting is being arranged
The air exhauster 4.2 of the tracheae other end.Exhaust pipe is arranged in preheating chamber front, flue gas can flow to preheating chamber front and could arrange
Out, moving distance of the flue gas in preheating chamber is improved, to fully contact with the aluminium bar that need to be preheated, obtains the waste heat of flue gas
It is utilized to better.
Further, the runner 3 is connected to the rear end of preheating chamber 2, is flowed through flue gas from entire preheating chamber, is further mentioned
Moving distance of the high flue gas in preheating chamber, to further increase the utilization rate of waste heat.
Preferably, the heat-circulation structure of the aluminium bar single rod furnace further includes for supplying gas to each burner conveying air
Pipe 6 and heat exchanger (not having picture in figure);The exhaust pipe 4.1 and snorkel 6 are connected to the heat exchanger to be changed
Heat.Fuel gas buring needs oxygen, and herein, combustion gas and air are sent to burner after mixing and burn, and the partial air is by supplying gas
Pipe 6 is conveyed, and can utilize the waste-heat of the flue gas partial air by heat exchanger, is brought waste heat with air into and is added
Hot chamber is utilized, and the utilization rate of waste heat is improved, and reduces energy consumption.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to the protection of the utility model
Range.