CN210856215U - Furnace gas return air system for aluminum annealing furnace - Google Patents
Furnace gas return air system for aluminum annealing furnace Download PDFInfo
- Publication number
- CN210856215U CN210856215U CN201921587944.8U CN201921587944U CN210856215U CN 210856215 U CN210856215 U CN 210856215U CN 201921587944 U CN201921587944 U CN 201921587944U CN 210856215 U CN210856215 U CN 210856215U
- Authority
- CN
- China
- Prior art keywords
- air
- return
- guide plate
- plate
- surface sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a burner gas return air system for aluminum product annealing stove belongs to annealing stove technical field, the utility model discloses the technical problem who solves is how to avoid the burner gas circulation in-process to appear convection current dead angle region in annealing stove furnace body, and the technical scheme of adoption is: the structure of the heat-insulation guide plate comprises a side wall heat-insulation cotton plate and a horizontal guide plate, wherein two sides of the horizontal guide plate are respectively provided with a vertical guide plate, and the side wall heat-insulation cotton plate is positioned outside the vertical guide plate and is arranged in parallel with the vertical guide plate; a return air rectifying device is arranged below the horizontal guide plate, a multi-leaf type guide device is arranged at the lower end of the vertical guide plate, and an arc-shaped guide plate is arranged between the multi-leaf type guide device and the side wall heat insulation cotton plate; the return air rectifying device comprises a bottom surface sealing plate and side sealing plates arranged at two ends of the bottom surface sealing plate, the bottom surface sealing plate is arranged below the horizontal guide plate, and a return air rectifying chamber is formed by the bottom surface sealing plate, the two side sealing plates and the horizontal guide plate; the bottom surface closing plate is provided with an air return hole.
Description
Technical Field
The utility model belongs to the technical field of annealing stove technique and specifically relates to a burner gas return air system for aluminum product annealing stove.
Background
The aluminum alloy foil is a metal material which is widely applied, and in the finished product stage, the aluminum foil is mostly required to be subjected to high-temperature heat treatment in an aluminum annealing furnace for a certain time (20-300 hours) according to the quality control requirement, so that the process goals of eliminating the processing stress of the aluminum, improving the mechanical property of the structure, improving the surface cleanliness and the like are realized, the production process of the aluminum foil annealing furnace is required to gradually heat furnace gas from normal temperature to 200-320 ℃ and keep the furnace gas for a long time according to the control requirement of an annealing process, and the uniformity requirement of the furnace gas is.
Present aluminum product annealing stove is mostly box heating furnace, its main characteristic is box furnace body, adopt electric energy or gas as the heating energy, circulating fan, furnace is placed in heater and the board-like wind channel of water conservancy diversion, horizontal guide plate, perpendicular guide plate and furnace heat preservation wall press cotton board to constitute the wind channel, the breach that perpendicular guide plate end and furnace bottom formed has constituted the wind channel air outlet, horizontal guide plate central point puts and sets up into the dryer, the unsettled installation of circulating fan impeller is in the dryer of business turn over, the heater is installed in the wind channel of furnace interior both sides, establish a plurality of heating districts according to the volume of charging in furnace, 1 big amount of wind axial fan is installed to every heating district, 1 set of heater and 1 set of.
Furnace gas in the furnace among the prior art can only be through the business turn over dryer backward flow that is located horizontal guide plate center in the furnace top, along horizontal guide plate horizontal motion after the fan impeller entrainment in the business turn over dryer, turn to after to get into furnace to the stove bottom direction after the oblique baffle direction of air-out that descends along perpendicular wind channel, its furnace gas circulation route is: furnace → air inlet and outlet duct → horizontal duct → vertical duct → air outlet inclined guide plate → furnace, the existing furnace gas circulation structure has several problems:
1. the return air is concentrated, because the air inlet and outlet pipes are positioned at the central part of the horizontal guide plate, all furnace gas can only flow back from the air inlet and outlet pipe after entering the hearth from the air outlet at the bottom and can perform secondary circulation through the fan impeller, thus an Λ -shaped airflow path is formed from top to bottom, the phenomena of 'wind short circuit' and 'hot dead angle' are formed in the area outside the airflow path, the uniformity of the hearth can reach the temperature difference of +/-5-10 ℃, therefore, the circulating fan in the prior art has to maintain higher rotating speed (more than 20HZ and more than 400r/min) and larger circulating air volume (more than 40000m3/h) during annealing, wherein, the convection dead angle area is formed between the two air outlet inclined guide plates at the lower part;
2. poor uniformity of a hearth easily causes quality problems of 'rising of a bar', 'bluing', 'unqualified mechanical properties' and the like of products such as aluminum alloy foils, thin-wall sections and the like due to overlarge temperature difference of furnace gas during heat treatment;
3. in order to solve the problem of furnace gas uniformity, the existing furnace type must adopt a large-air-volume circulating fan (with power of 37Kw and air volume of 140000m3/h) and high-frequency operation (25-35Hz) to stir and stir furnace gas in a furnace chamber by using large circulating air volume, so that the problem of high energy consumption of the circulating fan in operation is also caused, for example, 2 circulating fans are arranged in a 20T annealing furnace, the energy consumption of the circulating fan is 30-40Kwh per hour, the average annealing time of an aluminum foil is 150 hours, and the energy consumption of the circulating fan is about 4500Kwh or more;
4. when the large-air-volume furnace gas circulates, the air speed is high, the scouring force is strong, aluminum foil is easy to blow away and break, and broken foil can be blown onto a heater to cause electrical short circuit, so that abnormal shutdown and maintenance cost are caused.
In conclusion, how to avoid the occurrence of convection dead angle regions in the furnace body of the annealing furnace in the furnace gas circulation process is an urgent problem to be solved in the prior art.
Patent document No. CN201971859U discloses an efficient air circulation flow guiding device suitable for heat treatment furnaces, which includes a side wall, the side wall is connected with a furnace top, a circulation fan is arranged at the upper end of the furnace top, blades of the circulation fan are arranged in a horizontal flow guider, the horizontal flow guider is connected with the furnace top through a flow guiding plate hanger, the upper end and the lower end of the horizontal flow guider are respectively provided with an upper sealing plate and a lower sealing plate, an angled flow guiding plate is arranged between the upper sealing plate and the lower sealing plate to be connected, the horizontal flow guider is connected with a vertical flow guider, the vertical flow guider is connected with the side wall through a side flow guiding plate hanger, the inner wall side of the vertical flow guider is provided with a. However, in the technical scheme, a convection dead angle area appears in the furnace body of the annealing furnace in the furnace gas circulation process.
Disclosure of Invention
The technical task of the utility model is to provide a burner gas return air system for aluminum product annealing stove solves the problem that how to avoid appearing the convection dead angle region in the stove body of stove gas circulation in-process annealing stove.
The technical task of the utility model is realized in the following way, a furnace gas return air system for aluminum annealing furnaces, which comprises a side wall heat-insulating cotton plate and a horizontal guide plate, wherein, two sides of the horizontal guide plate are respectively provided with a vertical guide plate, and the side wall heat-insulating cotton plate is positioned outside the vertical guide plate and is arranged in parallel with the vertical guide plate; the upper side surface of the horizontal guide plate is provided with an air inlet and outlet barrel, the air inlet and outlet barrel is internally provided with a circulating fan blade, the lower end of the circulating fan blade is positioned in the air inlet and outlet barrel, and the upper end of the circulating fan blade is connected with a circulating fan motor; a return air rectifying device is arranged below the horizontal guide plate, a multi-leaf type guide device is arranged at the lower end of the vertical guide plate, and an arc-shaped guide plate is arranged between the multi-leaf type guide device and the side wall heat insulation cotton plate;
the return air rectifying device comprises a bottom surface sealing plate and side sealing plates arranged at two ends of the bottom surface sealing plate, the bottom surface sealing plate is arranged below the horizontal guide plate, the horizontal guide plate is arranged between the two side sealing plates, and a return air rectifying chamber is formed by the bottom surface sealing plate, the two side sealing plates and the horizontal guide plate; the bottom surface closing plate is provided with an air return hole.
Preferably, the air inlet and outlet barrel is cylindrical, and the diameter of the cylindrical air inlet and outlet barrel is larger than that of the fan blades of the circulating fan; the air inlet and outlet cylinder is positioned in the center of the upper side surface of the horizontal guide plate and is communicated with the return air rectification chamber.
Preferably, the air return holes are circular or long-strip-shaped, a plurality of air return holes are arranged in the circular or long-strip-shaped air return holes, and the air return holes are radially distributed from the center to the outside along the bottom surface sealing plate.
Preferably, the air return holes are distributed along the bottom surface sealing plate in a circumferential array from the center outwards, the array circumference of the air return holes is divided into a large circumference and a small circumference, and the circle centers of the large circumference and the small circumference of the array of the air return holes are coincided with the central point of the bottom surface sealing plate.
Preferably, the air return holes are distributed along the bottom surface sealing plate in a rectangular array from the center outwards, the array rectangles of the air return holes are divided into large rectangles and small rectangles, and the central points of the large rectangles and the small rectangles of the array of the air return holes are coincided with the central point of the bottom surface sealing plate.
Preferably, the air return hole is provided with an air return cylinder, and the air return cylinder is positioned on the upper side surface of the bottom surface sealing plate; the air return cylinder is in a horn mouth shape; the air return cylinder comprises a central air return cylinder and peripheral air return cylinders, the central air return cylinder is arranged in the middle of the bottom surface sealing plate, the peripheral air return cylinders are positioned outside the central air return cylinder, and the peripheral air return cylinders are distributed along the bottom surface sealing plate in a rectangular array;
the central axis of the central air return cylinder is vertical to the bottom surface sealing plate, the central axis of the peripheral air return cylinder inclines to the central axis of the central air return cylinder, and the angle between the central axis of the peripheral air return cylinder and the central axis of the central air return cylinder is 15-85 degrees.
Preferably, the multi-blade flow guide device comprises a plurality of flow guide units which are sequentially connected, a flow baffle is arranged between every two adjacent flow guide units, and the flow baffle is used for connecting the two adjacent flow guide units;
the flow guide unit comprises two air outlet support frames arranged in parallel, at least one air vane structure is arranged between the two air outlet support frames, and the air vane structure is fixedly arranged on the air outlet support frames through an adjusting structure.
Preferably, the wind blade structure comprises two wind blade rotating disks arranged in parallel, a guide wind blade is arranged between the two wind blade rotating disks, and the end part of the guide wind blade is fixedly connected with the wind blade rotating disks;
a connecting boss is arranged at the central position of the wind blade rotating disk, a clamping groove is arranged at the central position of the connecting boss, and the clamping groove is in clamping fit with the flow guide wind blade; the two sides of the connecting boss are respectively provided with a turntable fixing bolt, the turntable fixing bolt is positioned on the wind blade rotating disk, the wind blade rotating disk is in threaded connection with the turntable fixing bolt, and the turntable fixing bolt is used for fixedly connecting the wind blade structure and the adjusting structure; the connecting boss and the two turntable fixing bolts are positioned on the same straight line; the guide wind vane is square.
Preferably, the adjusting structure comprises an adjusting rotating disk, an adjusting block is arranged at the center of the adjusting rotating disk, an adjusting supporting block is arranged at one end, close to the adjusting rotating disk, of the adjusting block, and the adjusting supporting block penetrates through the adjusting block; a support frame fixing bolt is arranged at one end, far away from the adjusting rotating disc, of the adjusting block, the support frame fixing bolt penetrates through the adjusting block and extends to the air outlet support frame, and the air outlet support frame is fixedly connected with the support frame fixing bolt through threads; the two sides of the adjusting block are respectively provided with a connecting hole, the connecting holes are used for connecting the adjusting rotating disk and the wind blade rotating disk, the rotating disk fixing bolt penetrates through the connecting holes, and the connecting holes are in a long strip shape.
Preferably, the cross sections of the air outlet support frame and the flow baffle are both U-shaped; the two side walls of the U-shaped flow baffle are respectively and fixedly provided with an air outlet support frame, and the side wall of the U-shaped air outlet support frame is fixedly provided with an adjusting rotary disk.
The utility model discloses a burner gas return air system for aluminum product annealing stove has following advantage:
(1) furnace gas enters a box body through a return air hole of a bottom surface sealing plate of a return air rectification chamber and then enters an air inlet of a fan blade of a circulating fan through an air collecting port, because the width direction of the return air rectification chamber is wider than the air inlet of the fan blade of the circulating fan and the length direction of the return air rectification chamber longitudinally extends from a furnace door opening to a furnace rear wall, a return air path of the furnace gas is changed from one centralized position in the prior art into a plurality of positions and paths, a furnace gas circulation path and a thermal field distribution structure are greatly optimized, and the problems of 'wind short circuit' and 'hot dead angle' in the region outside the air inlet of the fan in the prior art are;
(2) the multi-page flow guide device enables furnace gas entering a hearth not to move along the direction of a furnace bottom any more, can be divided into a plurality of air flows to move towards different directions of the hearth, can adjust the movement direction of the furnace gas according to the charging condition of the hearth to strengthen the air flow movement and the heat convection at the dead angle position of the hearth, overcomes the problems of local high temperature caused by the concentration of air outlet at the bottom, easy 'lifting of a lever' and 'blueing' of aluminum alloy products and the like in the prior art, realizes the uniform movement and the heat convection of the air flow at each part of the hearth under the condition of small air volume by combining the use of the return air rectifying device, and;
(3) the furnace gas can be uniformly moved and thermally convected in the hearth without stirring and homogenizing the furnace gas by a large-air-volume fan, and the temperature difference of the hearth can be controlled to be less than or equal to +/-3 ℃, so that a small-air-volume circulating fan can be used for replacing a high-power large-air-volume circulating fan in the prior art or the operating frequency of a fan in the prior art can be directly reduced, and the operating energy consumption of the circulating fan in the annealing process is greatly reduced;
(4) the uniformity of furnace gas is improved, so that aluminum alloy products at all positions in the hearth can absorb heat uniformly, the synchronous speed of material temperature rise is improved, and the problems of long annealing time and high annealing energy consumption caused by large furnace gas temperature difference and asynchronous furnace material rise in all positions in the prior art are solved;
(5) the improvement of the uniformity of furnace gas tends to improve key quality indexes such as material performance, surface quality and the like of the annealed aluminum alloy product, reduce the quality defect and return loss of the product and improve the added value and market competitiveness of the product;
(6) the horn-mouth-shaped peripheral air return duct of the utility model is obliquely arranged towards the central air return duct, thereby ensuring that wind can rapidly enter the air inlet duct and the air outlet duct in the air return process and improving the air return efficiency;
(7) the connecting holes are long-strip-shaped, so that the mounting positions of the rotating disc and the wind blade rotating disc can be adjusted and adjusted quickly.
The utility model has the characteristics of reasonable in design, simple structure, easily processing, small, convenient to use, a thing is multi-purpose etc, therefore, has fine popularization and use value.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic perspective view of the return air rectification chamber shown in FIG. 1;
FIG. 3 is a schematic structural diagram of a return air rectification chamber in FIG. 1;
FIG. 4 is a schematic view of the structure of FIG. 3 taken along the line A;
FIG. 5 is a schematic view of the structure of FIG. 3 in the direction B;
fig. 6 is a schematic perspective view of a return air rectification chamber in embodiment 2;
FIG. 7 is a schematic structural view of a return air rectification chamber in embodiment 2;
FIG. 8 is a schematic structural view of example 3;
FIG. 9 is a schematic perspective view of the bottom sealing plate shown in FIG. 8;
FIG. 10 is a schematic structural view of the bottom plate of FIG. 8;
FIG. 11 is a schematic structural view of the multi-leaf fluid guiding device shown in FIG. 1;
FIG. 12 is a schematic perspective view of FIG. 11;
FIG. 13 is a schematic diagram of the structure of the leaf structure of FIG. 12;
FIG. 14 is a schematic structural view of the adjustment structure of FIG. 12;
FIG. 15 is a schematic structural view of example 4.
In the figure: in the figure: 1. the device comprises a horizontal guide plate, 2, a vertical guide plate, 3, an air inlet and outlet barrel, 4, a circulating fan motor, 5, side seal plates, 6, a bottom seal plate, 7, a return air hole, 8, a multi-blade type guide device, 9, a return air barrel, 10, a central return air barrel, 11, a peripheral return air barrel, 12, a return air rectification chamber, 13, circulating fan blades, 14, a resistance band heater, 15, a side wall heat insulation cotton plate, 16, an arc guide plate, 17, a guide unit, 18, a baffle plate, 19, an air outlet support frame, 20, a fan blade structure, 21, a fan blade rotating disc, 22, a guide fan blade, 23, a connecting boss, 24, a clamping groove, 25, a rotating disc fixing bolt, 26, an adjusting structure, 27, an adjusting rotating disc, 28, an adjusting block, 29, an adjusting support block, 30, a support frame fixing bolt, 31 and a connecting hole.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific examples, wherein the furnace air return system for an aluminum material annealing furnace is described below.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and for simplification of description. And are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in the attached drawing 1, the structure of the furnace gas return system for the aluminum annealing furnace of the utility model comprises a side wall heat-insulating cotton plate 15 and a horizontal guide plate 1, wherein a vertical guide plate 2 is respectively arranged at two sides of the horizontal guide plate 1, and the side wall heat-insulating cotton plate 15 is positioned at the outer side of the vertical guide plate 2 and is arranged in parallel with the vertical guide plate 2; the upper side surface of the horizontal guide plate 1 is provided with an air inlet and outlet barrel 3, a circulating fan blade 13 is arranged in the air inlet and outlet barrel 3, the lower end of the circulating fan blade 13 is positioned in the air inlet and outlet barrel 3, and the upper end of the circulating fan blade 13 is connected with a circulating fan motor 4; a return air rectifying device is arranged below the horizontal guide plate 1, a multi-leaf type guide device 8 is arranged at the lower end of the vertical guide plate 2, and an arc-shaped guide plate 16 is arranged between the multi-leaf type guide device 8 and the side wall heat insulation cotton plate 15;
the return air rectifying device comprises a bottom surface sealing plate 6 and side sealing plates 5 arranged at two ends of the bottom surface sealing plate 6, the bottom surface sealing plate 6 is arranged below the horizontal guide plate 1, the two side sealing plates 5 are arranged at two ends of the horizontal guide plate 1, and a return air rectifying chamber 12 is formed by the bottom surface sealing plate 6, the two side sealing plates 5 and the horizontal guide plate 1; the bottom surface closing plate 6 is provided with an air return hole 7. As shown in fig. 2, 3 and 4, the air return holes 7 are circular, a plurality of air return holes 7 are arranged in the circular shape, and the plurality of air return holes 7 are radially distributed from the center to the outside along the bottom surface seal plate 6. The air inlet and outlet barrel 3 is cylindrical, and the diameter of the cylindrical air inlet and outlet barrel 3 is larger than that of the circulating fan blades 13; the air inlet and outlet barrel 3 is positioned in the center of the upper side surface of the horizontal guide plate 1, and the air inlet and outlet barrel 3 is communicated with the return air rectification chamber 12.
As shown in fig. 1 and 2, the multi-leaf flow guiding device 8 includes a plurality of flow guiding units 17 connected in sequence, a flow baffle 18 is installed between two adjacent flow guiding units 17, and the flow baffle 18 is used for connecting two adjacent flow guiding units 17; the flow guide unit 17 comprises two air outlet support frames 19 arranged in parallel, three air vane structures 20 are installed between the two air outlet support frames 19, and the air vane structures 20 are fixedly installed on the air outlet support frames 19 through an adjusting structure 26. As shown in fig. 3, the wind blade structure 20 includes two wind blade rotating disks 21 arranged in parallel, a wind guiding blade 22 is installed between the two wind blade rotating disks 21, and the end of the wind guiding blade 22 is fixedly connected with the wind blade rotating disks 21; a connecting boss 23 is arranged at the center of the wind blade rotating disk 21, a clamping groove 24 is formed in the center of the connecting boss 23, and the clamping groove 24 is clamped and matched with the guide wind blade 22; the two sides of the connecting boss 23 are respectively provided with a turntable fixing bolt 25, the turntable fixing bolt 25 is positioned on the vane rotating disc 21, the vane rotating disc 21 is in threaded connection with the turntable fixing bolt 25, and the turntable fixing bolt 25 is used for fixedly connecting the vane structure 20 with the adjusting structure 26; the connecting boss 7 and the two turntable fixing bolts 25 are positioned on the same straight line; the guide wind vane 22 is square. As shown in fig. 4, the adjusting structure 26 includes an adjusting rotating disk 27, an adjusting block 28 is mounted at the center position of the adjusting rotating disk 27, an adjusting supporting block 29 is mounted at one end of the adjusting block 28 close to the adjusting rotating disk 27, and the adjusting supporting block 29 penetrates through the adjusting block 28; a support frame fixing bolt 30 is installed at one end, far away from the adjusting rotating disc 27, of the adjusting block 28, the support frame fixing bolt 30 penetrates through the adjusting block 28 and extends to the air outlet support frame 19, and the air outlet support frame 19 is fixedly connected with the support frame fixing bolt 30 through threads; the two sides of the adjusting block 28 are respectively provided with a connection 31, the connection holes 31 are used for connecting the adjusting rotating disk 27 and the wind blade rotating disk 21, the turntable fixing bolt 25 penetrates through the connection holes 31, and the connection holes 31 are long-strip-shaped, so that the installation positions of the adjusting rotating disk 27 and the wind blade rotating disk 215 can be quickly adjusted. The cross sections of the air outlet support frame 19 and the flow baffle 18 are both U-shaped; two side walls of the U-shaped flow baffle 18 are respectively and fixedly provided with an air outlet support frame 19, and the side wall of the U-shaped air outlet support frame 19 is fixedly provided with an adjusting rotating disk 27.
The utility model discloses a return air fairing installs top in furnace through anchor assembly, and wherein horizontal guide plate 1 is connected with perpendicular guide plate 2, and the two forms furnace gas horizontal air duct and perpendicular wind channel with furnace top and the 15 intervals of side wall heat preservation cotton board 500-other 300mm to be fixed in furnace top and side wall respectively through anchor assembly, circulating fan motor 4 installs perpendicularly in horizontal guide plate 1's top, and circulating fan flabellum 13 is arranged in the horizontal air duct, and resistance band heater 14 is arranged in perpendicular wind channel.
The burner gas of annealing stove gets into business turn over dryer 3 after the air return hole of return air rectification cavity 12 gets into the rectification chamber rectification and mixes, circulating fan flabellum 13 is installed in business turn over dryer 3, the burner gas upwards gets into the horizontal wind channel that horizontal guide plate 1 and furnace top pressure cotton board constitute by circulating fan flabellum 13 entrainment back, turn to the perpendicular wind channel that downwards gets into perpendicular guide plate 2 and side wall heat preservation cotton board 15 and constitute after, get into furnace towards a plurality of angles through the direction of multileaf formula guiding device 8 and convex guide plate 16, even use the utility model provides a burner gas circulation route is: furnace gas in the hearth enters the return air rectification chamber 12 → the air collecting opening → the air inlet of the circulating fan motor 4 → the horizontal air duct → the vertical air duct → the multi-leaf type flow guide device 8 and the arc-shaped flow guide plate 16 → the hearth from the return air hole 7 of the bottom surface closing plate 6.
Example 2:
this example differs from example 1 only in that: as shown in fig. 6 and 7, the air return holes 7 are elongated, a plurality of air return holes 7 are arranged in the elongated shape, and the air return holes 7 are radially distributed from the center to the outside along the bottom surface sealing plate 6. Other structures, positional relationships, and connection relationships are completely the same as those in embodiment 1.
Example 3:
this example differs from example 1 only in that: as shown in fig. 5, the air return holes 7 are distributed along the bottom surface sealing plate 6 in a circumferential array from the center to the outside, the array circumference of the air return holes 7 is divided into a large circumference and a small circumference, and the circle centers of the large circumference and the small circumference of the array of the air return holes 7 are all overlapped with the center point of the bottom surface sealing plate 6. Other structures, positional relationships, and connection relationships are completely the same as those in embodiment 1.
Example 4:
this example differs from example 1 only in that: as shown in fig. 15, the air return holes 7 are distributed along the bottom surface sealing plate 6 in a rectangular array from the center to the outside, the array rectangles of the air return holes 7 are divided into large rectangles and small rectangles, the central points of the array large rectangles and the array small rectangles of the air return holes 7 are overlapped with the central point of the bottom surface sealing plate 6, and the size of the hole in the middle position of the air return holes 7 in the rectangular array is smaller than that of the peripheral air return holes 7 due to the fact that the middle air pressure is high and the peripheral air pressure is low, and therefore uniform air inlet is ensured. Other structures, positional relationships, and connection relationships are completely the same as those in embodiment 1.
Example 5:
this example differs from example 1 only in that: as shown in fig. 8, the return air duct 9 is mounted on the return air hole 7, and the return air duct 9 is located on the upper side surface of the bottom surface sealing plate 6, that is, the return air duct 9 is located in the return air rectification chamber 12. As shown in fig. 9, the return air cylinder 9 is in a bell mouth shape. As shown in fig. 10, the air return duct 9 includes a central air return duct 10 and peripheral air return ducts 11, the central air return duct 10 is installed at the middle position of the bottom surface sealing plate 6, the peripheral air return ducts 11 are located at the outer side of the central air return duct 10, and the peripheral air return ducts 11 are distributed along the bottom surface sealing plate 6 in a rectangular array. The central axis of the central air return duct 10 is perpendicular to the bottom surface sealing plate 6, the central axis of the peripheral air return duct 11 is obliquely arranged along the direction of the central axis of the central air return duct 10, and the angle between the central axis of the peripheral air return duct 11 and the central axis of the central air return duct 10 is 30 degrees. Other structures, positional relationships, and connection relationships are completely the same as those in embodiment 1.
The peripheral air return ducts 11 can also be distributed radially or in a rectangular array from the center to the outside along the bottom surface seal plate 6.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A furnace gas return air system for an aluminum annealing furnace comprises a side wall heat-insulating cotton plate and a horizontal guide plate, wherein two sides of the horizontal guide plate are respectively provided with a vertical guide plate, and the side wall heat-insulating cotton plate is positioned outside the vertical guide plate and is arranged in parallel with the vertical guide plate; the upper side surface of the horizontal guide plate is provided with an air inlet and outlet barrel, the air inlet and outlet barrel is internally provided with a circulating fan blade, the lower end of the circulating fan blade is positioned in the air inlet and outlet barrel, and the upper end of the circulating fan blade is connected with a circulating fan motor; the device is characterized in that a return air rectifying device is arranged below the horizontal guide plate, a multi-leaf type guide device is arranged at the lower end of the vertical guide plate, and an arc-shaped guide plate is arranged between the multi-leaf type guide device and the side wall heat-insulating cotton plate;
the return air rectifying device comprises a bottom surface sealing plate and side sealing plates arranged at two ends of the bottom surface sealing plate, the bottom surface sealing plate is arranged below the horizontal guide plate, and a return air rectifying chamber is formed by the bottom surface sealing plate, the two side sealing plates and the horizontal guide plate; the bottom surface closing plate is provided with an air return hole.
2. The furnace gas return air system for the aluminum material annealing furnace as claimed in claim 1, wherein the air inlet and outlet duct is cylindrical, and the diameter of the cylindrical air inlet and outlet duct is larger than that of the fan blades of the circulating fan; the air inlet and outlet cylinder is positioned in the center of the upper side surface of the horizontal guide plate and is communicated with the return air rectification chamber.
3. The furnace gas return system for the aluminum material annealing furnace as recited in claim 1, wherein said return air holes are circular or elongated, a plurality of return air holes are provided, and a plurality of return air holes are radially distributed from the center to the outside along the bottom surface sealing plate.
4. The furnace gas return system for the aluminum material annealing furnace as recited in claim 1 or 3, wherein said return air holes are distributed in a circumferential array from the center to the outside along the bottom surface sealing plate, the array circumference of the return air holes is divided into a large circle and a small circle, and the centers of the large and small circles of the array of the return air holes are all coincident with the center point of the bottom surface sealing plate.
5. The furnace gas return system for the aluminum material annealing furnace as recited in claim 1 or 3, wherein said return air holes are distributed along the bottom surface sealing plate from the center to the outside in a rectangular array, the array rectangle of the return air holes is divided into large and small rectangles, and the center points of the array large and small rectangles of the return air holes are all coincident with the center point of the bottom surface sealing plate.
6. The furnace gas return system for the aluminum material annealing furnace as defined in claim 1 or 2, wherein the return hole is provided with a return cylinder, and the return cylinder is positioned on the upper side of the bottom surface sealing plate; the air return cylinder is in a horn mouth shape; the air return cylinder comprises a central air return cylinder and peripheral air return cylinders, the central air return cylinder is arranged in the middle of the bottom surface sealing plate, the peripheral air return cylinders are positioned outside the central air return cylinder, and the peripheral air return cylinders are distributed along the bottom surface sealing plate in a rectangular array;
the central axis of the central air return cylinder is vertical to the bottom surface sealing plate, the central axis of the peripheral air return cylinder inclines to the central axis of the central air return cylinder, and the angle between the central axis of the peripheral air return cylinder and the central axis of the central air return cylinder is 15-85 degrees.
7. The furnace gas return system for the aluminum material annealing furnace as defined in claim 1 or 2, wherein the multi-leaf type flow guiding device comprises a plurality of flow guiding units connected in sequence, and a flow baffle plate is arranged between two adjacent flow guiding units and is used for connecting the two adjacent flow guiding units;
the flow guide unit comprises two air outlet support frames arranged in parallel, at least one air vane structure is arranged between the two air outlet support frames, and the air vane structure is fixedly arranged on the air outlet support frames through an adjusting structure.
8. The furnace gas return system for the aluminum material annealing furnace as recited in claim 7, wherein the wind blade structure comprises two wind blade rotating disks arranged in parallel, a guide wind blade is arranged between the two wind blade rotating disks, and the end part of the guide wind blade is fixedly connected with the wind blade rotating disks;
a connecting boss is arranged at the central position of the wind blade rotating disk, a clamping groove is arranged at the central position of the connecting boss, and the clamping groove is in clamping fit with the flow guide wind blade; the two sides of the connecting boss are respectively provided with a turntable fixing bolt, the turntable fixing bolt is positioned on the wind blade rotating disk, the wind blade rotating disk is in threaded connection with the turntable fixing bolt, and the turntable fixing bolt is used for fixedly connecting the wind blade structure and the adjusting structure; the connecting boss and the two turntable fixing bolts are positioned on the same straight line; the guide wind vane is square.
9. The furnace gas return air system for the aluminum material annealing furnace as recited in claim 7, wherein the adjusting structure comprises an adjusting rotating disk, an adjusting block is arranged at the center of the adjusting rotating disk, an adjusting support block is arranged at one end of the adjusting block close to the adjusting rotating disk, and the adjusting support block penetrates through the adjusting block; a support frame fixing bolt is arranged at one end, far away from the adjusting rotating disc, of the adjusting block, the support frame fixing bolt penetrates through the adjusting block and extends to the air outlet support frame, and the air outlet support frame is fixedly connected with the support frame fixing bolt through threads; the two sides of the adjusting block are respectively provided with a connecting hole, the connecting holes are used for connecting the adjusting rotating disk and the wind blade rotating disk, the rotating disk fixing bolt penetrates through the connecting holes, and the connecting holes are in a long strip shape.
10. The furnace gas return air system for the aluminum material annealing furnace as recited in claim 7, wherein the cross sections of the outlet air support frame and the baffle plate are both U-shaped; the two side walls of the U-shaped flow baffle are respectively and fixedly provided with an air outlet support frame, and the side wall of the U-shaped air outlet support frame is fixedly provided with an adjusting rotary disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587944.8U CN210856215U (en) | 2019-09-23 | 2019-09-23 | Furnace gas return air system for aluminum annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587944.8U CN210856215U (en) | 2019-09-23 | 2019-09-23 | Furnace gas return air system for aluminum annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210856215U true CN210856215U (en) | 2020-06-26 |
Family
ID=71306099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921587944.8U Active CN210856215U (en) | 2019-09-23 | 2019-09-23 | Furnace gas return air system for aluminum annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210856215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876579A (en) * | 2020-07-29 | 2020-11-03 | 宁波萨科森工业科技有限公司 | Energy-saving annealing furnace |
-
2019
- 2019-09-23 CN CN201921587944.8U patent/CN210856215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876579A (en) * | 2020-07-29 | 2020-11-03 | 宁波萨科森工业科技有限公司 | Energy-saving annealing furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202885399U (en) | Refrigerator forced heat dissipation structure | |
| CN102757171B (en) | Annealing furnace | |
| CN210856243U (en) | Furnace gas return air rectifying device for aluminum annealing furnace | |
| CN102927745A (en) | Refrigerator forced heat radiation structure | |
| CN210856215U (en) | Furnace gas return air system for aluminum annealing furnace | |
| CN210856259U (en) | Multi-blade type flow guide device for aluminum annealing furnace | |
| CN106591979B (en) | A kind of anxiety heat-setting equipment | |
| CN108512096A (en) | A kind of radiator structure of power distribution cabinet and preparation method thereof | |
| CN201463608U (en) | High-temperature material gas rapid injection cooing unit | |
| CN209260148U (en) | A kind of air cooling system of vacuum air-quenching furnace | |
| CN215668109U (en) | Hot air circulation tempering furnace | |
| WO2018099149A1 (en) | Hot-air oxygen-free brazing system | |
| CN202057024U (en) | Water storage type electromagnetic water heater | |
| CN113708570A (en) | Double-fed aerogenerator sliding ring room cooling structure | |
| CN208794966U (en) | A kind of tunnel heating furnace | |
| CN217517013U (en) | Forced convection device of high-temperature normal-pressure atmosphere furnace | |
| CN206828576U (en) | Annealing furnace swirl injection hot air circulation structure | |
| CN218764593U (en) | Sintering furnace with external circulation cooling system | |
| CN215925027U (en) | Air deflector assembly for saw blade tempering furnace | |
| CN219756659U (en) | Hot air circulation surface type air duct heater | |
| CN220670153U (en) | Hot air circulation system | |
| CN214381828U (en) | Electric appliance cabinet of glass heating furnace with heat dissipation function | |
| CN220862950U (en) | Continuous nitrogen protection aluminum brazing furnace for electric cooling plate | |
| CN214422709U (en) | High-frequency heating control device for electromagnetic wire copper wire production | |
| CN210740702U (en) | Heating furnace with explosion-proof structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A furnace gas return air system for aluminum annealing furnace Effective date of registration: 20201217 Granted publication date: 20200626 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO SACHSEN INDUSTRY TECHNOLOGY Co.,Ltd. Registration number: Y2020330001225 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211223 Granted publication date: 20200626 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO SACHSEN INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2020330001225 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Furnace gas return air system for aluminum annealing furnace Effective date of registration: 20211225 Granted publication date: 20200626 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO SACHSEN INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2021330002642 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230511 Granted publication date: 20200626 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO SACHSEN INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2021330002642 |