CN213835504U

CN213835504U - Atmosphere protection and cooling combined type double-effect cooling chamber for aluminum brazing production line

Info

Publication number: CN213835504U
Application number: CN202022645374.2U
Authority: CN
Inventors: 邢启军; 刘香国; 沙楠; 李璇
Original assignee: Seco Warwick Thermal Treatment Equipment Manufacturing Tianjin Co ltd
Current assignee: Seco Warwick Thermal Treatment Equipment Manufacturing Tianjin Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-30
Anticipated expiration: 2030-11-16

Abstract

The utility model provides an aluminium brazing production line atmosphere protection and cooling combination formula dual efficiency cooling chamber, relate to aluminium brazing production line field, including fixed connection's muffle primary cooling room and atmosphere curtain room, the cooling jacket wind channel that link up is equipped with in muffle primary cooling room and the atmosphere curtain room, let in the cooling air opposite with material direction of transfer in the cooling jacket wind channel, the cooling air in the cooling jacket wind channel passes through the heat exchange and reduces the temperature of cooling muffle primary cooling room and atmosphere curtain room, effectively eliminate the inhomogeneous factor of length direction amount of wind distribution, reduce the loss along the way of wind pressure, can reduce the quantity of fan power and/or reduction fan when improving cooling efficiency.

Description

Atmosphere protection and cooling combined type double-effect cooling chamber for aluminum brazing production line

Technical Field

The utility model relates to an aluminium production line field of brazing especially relates to an aluminium production line atmosphere protection and cooling combination formula dual efficiency cooling chamber of brazing.

Background

The aluminium brazing production line, after the aluminium product accomplishes the brazing technology, get into the cooling finished product stage, the cooling process includes: indirect (jacketed) primary cooling and forced convection cooled final cooling. The temperature of the product when the product is taken out of the brazing furnace is generally about 600 ℃, the primary cooling must be carried out under the protection of the atmosphere with ultralow oxygen content so as to avoid the rapid oxidation of the product at high temperature, the temperature of the product when the product leaves the atmosphere protection environment is lower than the aluminum oxidation control temperature of 350 ℃ under the normal condition, and the atmosphere curtain chamber behind the primary cooling chamber is a buffer transition region for ensuring the ultralow oxygen content of the primary cooling chamber when the product enters the air from the atmosphere protection environment.

The primary cooling chamber is used for ensuring that the product is cooled to a safe temperature which is not easy to oxidize in the air, and the atmosphere curtain chamber is used for preventing the outside air from invading into the primary cooling chamber by using a group of baffles, so that the oxygen content which is unfavorable for the product just discharged can be effectively controlled. The flux melted by brazing of the product still has slag formation and volatilizes hydrogen fluoride corrosive gas and indoor high-temperature products in the primary cooling chamber, so the manufacturing material of the primary cooling chamber is generally stainless steel with good corrosion resistance and heat resistance, and the manufacturing material of the rear atmosphere curtain chamber is generally common carbon steel due to the reduction of the temperature of the product passing through the primary cooling chamber. The flange which increases the contact area to ensure air tightness is generally used for connecting the primary cooling chamber and the back atmosphere curtain chamber.

The existing cooling chamber has the following problems:

(1) effect on cooling efficiency: the jacket cooling of the primary cooling chamber is connected with the flange between the atmosphere curtain chambers, so that limitations are brought to a passage of cooling air, an air deflector and air distribution, the cooling air can only enter from the bottom of the chamber and is discharged from the top of the chamber along the side wall, the air quantity of the air supply form is in direct proportion to the length of the primary cooling chamber, and the cooling speed, the uniformity of the cooling temperature and the cooling efficiency are directly influenced.

(2) Impact on energy consumption: the load of the cooling fan is increased, the power of the fan is increased or the number of the fans is increased; the cooling time is prolonged due to the low-efficiency cooling, and for a continuous production line, the primary cooling chamber needs to be lengthened, so that the flux of nitrogen introduced into the chamber is increased, and the energy consumption in the furnace is increased due to the lengthening of the mesh belt in the circulating reciprocating operation.

(3) Welded integrated cooling channels are complex in structure and difficult to manufacture, install and disassemble: for the cooling air is introduced from the outside of the factory, the structure of the jacket air duct of the primary cooling chamber is complex due to the limitation, and great inconvenience is brought to the manufacture, assembly, disassembly and maintenance.

(4) The naturally cooled atmosphere curtain chamber is used for slowly cooling the product, and the temperature reduction controllability of the product at the outlet is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the prior art is not enough to be overcome, and provides an atmosphere protection and cooling combined type double-effect cooling chamber for an aluminum brazing production line.

The utility model discloses a realize through following technical scheme: the utility model provides an aluminium brazing production line atmosphere protection and cooling combination formula dual efficiency cooling chamber, along material direction of transfer, including fixed connection's muffle primary cooling room and atmosphere curtain room, the muffle primary cooling room is equipped with the cooling jacket wind channel that link up with in the atmosphere curtain room, lets in the cooling air in the cooling jacket wind channel, and the cooling air in the cooling jacket wind channel reduces the temperature of cooling muffle primary cooling room and atmosphere curtain room through the heat exchange.

According to the technical scheme, preferably, the outlet side of the atmosphere curtain chamber is connected with a cooling air inlet, the inlet side of the muffle primary cooling chamber is provided with an air outlet, two ends of a cooling jacket air channel are respectively connected with the cooling air inlet and the air outlet, and cooling air opposite to the material conveying direction is introduced into the cooling jacket air channel.

According to the technical scheme, preferably, the cooling jacket air duct adopts an aluminum bent plate surrounding the muffle primary cooling chamber and the atmosphere curtain chamber.

According to the above technical solution, preferably, the cooling jacket air duct includes a plurality of groups of groove-shaped air ducts assembled by single bent thin aluminum plates.

According to the technical scheme, preferably, a variable cross-section channel is arranged at the joint of the atmosphere curtain chamber and the muffle primary cooling chamber.

According to the technical scheme, preferably, the variable cross-section channel is provided with an access hole communicated with the cooling jacket air duct, and the access hole is provided with a protective cover for cutting off cooling air.

According to the technical scheme, preferably, the muffle primary cooling chamber adopts an arched top.

According to the above technical scheme, preferably, the atmosphere curtain chamber is internally provided with a roller supporting plate in sliding connection with the atmosphere curtain chamber, and the roller supporting plate is provided with an atmosphere curtain.

According to the above technical solution, preferably, the roller blade is sealed and defined in the atmosphere curtain chamber by a pressing assembly.

According to the technical scheme, preferably, the air outlet is provided with the air collecting and exhausting cover, and the air collecting and exhausting cover comprises a detachable support and an air exhausting cover.

The utility model has the advantages that: the utility model discloses a muffle primary cooling chamber and atmosphere curtain room of fixed connection, and muffle primary cooling chamber and atmosphere curtain are indoor to be equipped with the cooling jacket wind channel that link up, wherein let in the cooling jacket wind channel with material direction of transfer opposite cooling air, the cooling air in the cooling jacket wind channel reduces the temperature of cooling muffle primary cooling chamber and atmosphere curtain room through the heat exchange mode, effectively eliminate length direction amount of wind distribution inhomogeneous factor, reduce the loss on the way of wind pressure, can reduce fan power and/or reduce the quantity of fan when improving cooling efficiency; the cooling speed is improved, so that the lengths of the original muffle primary cooling chamber and the original atmosphere curtain chamber are shortened in a corresponding proportion to the improved cooling efficiency, and the original effective lengths of the muffle primary cooling chamber and the original atmosphere curtain chamber are greatly shortened by the double-effect cooling chamber with the improved cooling efficiency; under the condition of a certain cooling air speed, the air quantity of the fan only depends on the section size of the cooling jacket air channel and is irrelevant to the length of the cooling chamber, so that the problems of air distribution in the length direction and fan quantity increase do not need to be considered for a long primary cooling chamber.

Drawings

Fig. 1 shows a schematic front view structure according to an embodiment of the present invention.

Fig. 2 shows a schematic sectional structure view in the direction of a-a in fig. 1.

Fig. 3 shows a schematic cross-sectional structure in the direction B-B in fig. 1.

Fig. 4 shows a schematic cross-sectional structure in the direction C-C in fig. 1.

Fig. 5 shows a schematic cross-sectional structure in the direction D-D in fig. 1.

In the figure: 1. a muffle primary cooling chamber; 2. an atmosphere curtain chamber; 3. a cooling jacket duct; 4. a cooling air inlet; 5. an air outlet; 6. an aluminum bending plate; 7. a trough-shaped air duct; 8. a variable cross-section channel; 9. a roller supporting plate; 10. a compression assembly; 11. a wind collecting and discharging cover; 12. a support stand; 13. an atmosphere curtain.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

As shown in the figure, the utility model provides an aluminium brazing production line atmosphere protection and cooling combination formula dual efficiency cooling chamber, along material direction of transfer, including fixed connection's muffle primary cooling chamber 1 and atmosphere curtain room 2, the lower part of muffle primary cooling chamber 1 and atmosphere curtain room 2 is equipped with support rack 12, be equipped with the cooling jacket wind channel 3 that link up in muffle primary cooling chamber 1 and the atmosphere curtain room 2, cooling jacket wind channel 3 is the cavity structure who separates with muffle primary cooling chamber 1 and atmosphere curtain room 2, the outlet side of atmosphere curtain room 2 is connected with cooling air inlet 4, the import side of muffle primary cooling chamber 1 is equipped with air exit 5, the both ends of cooling jacket wind channel 3 are connected with cooling air inlet 4 and air exit 5 respectively, the cooling air gets into cooling jacket wind channel 3 through cooling air inlet 4, let in the cooling jacket wind channel 3 this moment with material direction of transfer opposite cooling air, the cooling air in the cooling wind channel 3 reduces cooling muffle primary cooling chamber 1 and atmosphere through forced convection heat exchange The temperature of the curtain chamber 2 is discharged from the exhaust outlet 5 by the cooling air after heat exchange in the cooling jacket air duct 3.

According to the above embodiment, preferably, the cooling jacket air duct 3 adopts the aluminum bent plate 6 surrounding the muffle primary cooling chamber 1 and the atmosphere curtain chamber 2, and the cooling air completely penetrates through the outer walls of the muffle primary cooling chamber 1 and the atmosphere curtain chamber 2 and is finally discharged through the air outlet 5 of the muffle primary cooling chamber 1; the cooling jacket air duct 3 assembled by the bent aluminum plate has the advantages that the aluminum is a good heat conductor, the heat conductivity is 7-8 times that of plain carbon steel and stainless steel, and the specific gravity is only 35% of that of the plain carbon steel (the specific gravity of the aluminum is 2.7 tons/meter cubic, and the specific gravity of the plain carbon steel is 7.8 tons/meter cubic), so that the cooling jacket air duct is light in weight to the greatest extent, the cooling structure of the jacket is simplified, the heat dissipation area can be enlarged, the heat transfer strength is increased, the cooling speed can be improved in multiples, the factor of uneven air volume distribution in the length direction can be eliminated, the loss of air pressure along the way is reduced, the cooling efficiency is improved, and the power of a fan or the number of fans is reduced.

The increased cooling rate allows the length of the muffle initial cooling chamber 1 and the atmosphere curtain chamber 2 to be reduced in proportion to the increased cooling efficiency, for example, a double-effect cooling chamber with a doubled cooling efficiency is designed, and the effective length of the muffle initial cooling chamber 1 and the atmosphere curtain chamber 2 can be reduced by 50%.

According to the above embodiment, preferably, the cooling jacket air duct 3 includes the plurality of groups of groove-shaped air ducts 7 assembled by the single bent thin aluminum plates, and the groove-shaped air ducts 7 are fixed on the muffle primary cooling chamber 1 and the atmosphere curtain chamber 2, and have the advantages of thermal compensation, difficulty in deformation, convenience in disassembly, and convenience in maintenance and repair.

According to the above embodiment, it is preferable that the joint of the atmosphere curtain chamber 2 and the muffle primary cooling chamber 1 is provided with the variable cross-section passage 8, which is beneficial to the blocking of the atmosphere curtain chamber 2 and the muffle primary cooling chamber 1.

According to the embodiment, the muffle primary cooling chamber 1 is preferably provided with the arched roof, so that the bending moment can be effectively improved, and the arched roof structure is high in strength and not easy to deform.

According to the above embodiment, preferably, the exit of atmosphere curtain chamber 2 is equipped with roller layer board 9, roller layer board 9 includes roller train and layer board, the inner wall of atmosphere curtain chamber 2 is equipped with the roller track with roller train looks adaptation of roller layer board 9, shelve atmosphere curtain 13 on the tip of roller layer board 9, and then can remove the atmosphere curtain 13 change access door that the lateral wall open area of former atmosphere curtain chamber 2 accounted for whole wall about 70%, change the maintenance replacement position to the exit of atmosphere curtain chamber 2, manually or mechanically pull out roller layer board 9, change atmosphere curtain 13 in the export of atmosphere curtain chamber 2 and the position between the collection petticoat pipe, very big improvement atmosphere curtain 13's change efficiency, and then effectively reduce the open area of atmosphere curtain chamber 2, improve the gas tightness of atmosphere curtain chamber 2, practice thrift the space of changing, and be convenient for change the operation.

According to the above embodiment, preferably, the roller supporting plate 9 is sealed and limited in the atmosphere curtain chamber 2 through the pressing component 10, the pressing component 10 can adopt a roller hanging type lead screw or a cylinder, the quick and convenient pressing of the inlet and outlet ends of the sealed roller supporting plate can be realized, and the adjustable atmosphere curtain device has certain adjustability, saves space and is convenient to operate due to the fact that the upper part of the position of the atmosphere curtain 13 is replaced.

According to the above embodiment, preferably, the variable cross-section passage 8 is provided with an access opening communicated with the cooling jacket air duct 3, and the access opening is provided with a protective cover for cutting off cooling air, so that the variable cross-section cooling air duct has the advantages of being free from interference of cold air in the cooling jacket air duct 3, and a necessary protective gas inlet can be additionally arranged as required.

According to the above embodiment, preferably, the air outlet 5 is provided with the air collecting and exhausting cover 11, and the air collecting and exhausting cover 11 comprises the detachable bracket and the air exhausting cover, which is advantageous in that the detachment and the installation are convenient.

The utility model has the advantages that: the utility model discloses a muffle primary cooling chamber 1 and atmosphere curtain room 2 of fixed connection, and be equipped with the cooling jacket wind channel 3 that link up in muffle primary cooling chamber 1 and the atmosphere curtain room 2, wherein let in the cooling air opposite with material direction of transfer in the cooling jacket wind channel 3, the cooling air in the cooling jacket wind channel 3 reduces the temperature of cooling muffle primary cooling chamber 1 and atmosphere curtain room 2 through the heat exchange mode, effectively eliminate length direction amount of wind distribution inhomogeneous factor, reduce the loss on the way of wind pressure, can reduce fan power and/or reduce the quantity of fan when improving cooling efficiency; the cooling speed is improved, so that the lengths of the original muffle primary cooling chamber 1 and the original atmosphere curtain chamber 2 are shortened in proportion to the improved cooling efficiency, and the original effective lengths of the muffle primary cooling chamber 1 and the original atmosphere curtain chamber 2 are greatly shortened by the double-effect cooling chamber with the improved cooling efficiency; under the condition of a certain cooling air speed, the air quantity of the fan only depends on the section size of the cooling jacket air channel and is irrelevant to the length of the cooling chamber, so that the problems of air distribution in the length direction and fan quantity increase do not need to be considered for a long primary cooling chamber.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not 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 interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; 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 utility model can be understood in specific cases to those of ordinary skill in the art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an aluminium brazing production line atmosphere protection and cooling combination formula dual efficiency cooling chamber, its characterized in that, along material direction of transfer, including fixed connection's muffle primary cooling room and atmosphere curtain room, the cooling jacket wind channel that link up is equipped with in muffle primary cooling room and the atmosphere curtain room, let in the cooling air in the cooling jacket wind channel, the cooling air in the cooling jacket wind channel reduces the temperature of cooling muffle primary cooling room and atmosphere curtain room through the heat exchange.

2. The combined type double-effect cooling chamber for atmosphere protection and cooling of the aluminum brazing production line according to claim 1, wherein an outlet side of the atmosphere curtain chamber is connected with a cooling air inlet, an inlet side of the muffle primary cooling chamber is provided with an air outlet, two ends of the cooling jacket air duct are respectively connected with the cooling air inlet and the air outlet, and cooling air opposite to the material conveying direction is introduced into the cooling jacket air duct.

3. The combined type double-effect cooling chamber for atmosphere protection and cooling of the aluminum brazing production line according to claim 2, wherein the cooling jacket air duct adopts an aluminum bent plate surrounding the muffle primary cooling chamber and the atmosphere curtain chamber.

4. The combined atmosphere protection and cooling dual-effect cooling chamber of the aluminum brazing production line according to claim 3, wherein the cooling jacket air duct comprises a plurality of groups of groove-shaped air ducts assembled by single bent thin aluminum plates.

5. The combined atmosphere protection and cooling dual-effect cooling chamber of the aluminum brazing production line according to any one of claims 1 to 4, wherein a variable cross-section channel is arranged at the joint of the atmosphere curtain chamber and the muffle primary cooling chamber.

6. The combined type atmosphere protection and cooling dual-effect cooling chamber of the aluminum brazing production line according to claim 5, wherein the variable cross-section passage is provided with an access opening communicated with the cooling jacket air duct, and the access opening is provided with a protective cover for cutting off cooling air.

7. The combined atmosphere protection and cooling dual-effect cooling chamber of the aluminum brazing production line according to claim 6, wherein the muffle primary cooling chamber is provided with an arched roof.

8. The combined type double-effect cooling chamber for atmosphere protection and cooling of the aluminum brazing production line according to any one of claims 2 to 4, wherein a roller supporting plate in sliding connection with the atmosphere curtain chamber is arranged in the atmosphere curtain chamber, and an atmosphere curtain is arranged on the roller supporting plate.

9. The combined atmosphere protection and cooling dual efficiency cooling chamber of claim 8, wherein the roller blade is sealed and confined within the atmosphere curtain chamber by a hold down assembly.

10. The combined type double-effect cooling chamber for atmosphere protection and cooling of the aluminum brazing production line as claimed in claim 9, wherein the air outlet is provided with an air collecting and exhausting cover, and the air collecting and exhausting cover comprises a detachable bracket and an air exhausting cover.