Non-muffle aluminum brazing furnace

Abstract

The utility model provides a muffle-free aluminum brazing furnace. The muffle-free aluminum brazing furnace comprises a feeding chamber, a brazing chamber, a cooling chamber and a discharging chamber, first sealing rolling shaft conveying devices are arranged in the feeding chamber, the cooling chamber and the discharging chamber; a heat preservation layer, a heating element and a second sealing rolling shaft conveying device are arranged in the brazing chamber. And the brazing chamber is provided with a nitrogen input pipe below the second sealing roller conveying device. According to the muffle-free aluminum brazing furnace, materials are conveyed through the first sealing rolling shaft conveying devices and the second sealing rolling shaft conveying devices, the situation that the materials are conveyed through a conveying mesh belt is avoided, repeated heating and freezing of the mesh belt are avoided, and energy consumption and equipment maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of industrial brazing furnace, specifically relates to a kind of aluminium brazing furnace without muffle. BACKGROUND

[0002] Currently, the conventional aluminium brazing furnace is composed of upper muffle sealing section and open return section to form a mesh belt circulating operation closed loop, the upper muffle sealing section is composed of front curtain section muffle, brazing heating section muffle, cooling section muffle and rear curtain chamber muffle connection, the open return section is composed of driven roller, feeding section, discharging section, driven roller, return carrier roller and driving roller, and the mesh belt is driven in the open section. Since the temperature of the heating section muffle is above 600 DEG C, the entire mesh belt must be selected according to the working condition of the heating section, which results in high price of the mesh belt, and the mesh belt is repeatedly heated and cooled during use, which consumes a lot of energy and leads to high maintenance cost of the mesh belt and heating muffle in later period, and the service life of the mesh belt is limited. SUMMARY

[0003] Therefore, the utility model provides an aluminium brazing furnace without muffle and a heating and cooling method to overcome the above problems or at least partially solve or alleviate the above problems.

[0004] An aluminium brazing furnace without muffle comprises feeding chamber, brazing chamber, cooling chamber and discharging chamber which are sequentially and sealingly connected by flanges from front to back, the inside of the feeding chamber, the cooling chamber and the discharging chamber is provided with first sealing roller shaft conveying device, the brazing chamber comprises inner chamber body and outer shell body arranged outside the inner chamber body, the inner chamber body and the outer shell body have hollow sealing cavity therebetween, the inner wall of the inner chamber body is provided with heat preservation layer, the heating element is mounted on the heat preservation layer, the second sealing roller shaft conveying device penetrating through the brazing chamber is further arranged in the inner chamber body, the second roller shaft of the second sealing roller shaft conveying device penetrates through the inner chamber body, sealing cavity and outer shell body in sequence and is statically sealingly connected with the outer shell body.

[0005] The utility model further has the following optional features.

[0006] Optionally, the brazing chamber is provided with nitrogen gas input pipe below the second sealing roller shaft conveying device.

[0007] Optionally, the first sealing roller shaft conveying device comprises multiple pairs of first roller frames, multiple first roller shafts and first driving motor, first sprocket transmission mechanism is arranged between the end portions of every two adjacent first roller shafts, and the first driving motor is drivingly connected with the end portion of the first roller shaft.

[0008] Optionally, the second sealing roller conveying device comprises a plurality of pairs of second roller frames, a plurality of second rollers and a second driving motor, both ends of each of the second rollers are provided with sealing bearing seats between the heat preservation layers, second sprocket transmission mechanisms are arranged between the end portions of every two adjacent second rollers, and a main shaft of the second driving motor is in transmission connection with the end portion of one of the second rollers.

[0009] Optionally, the shaft ends of the second rollers extend into the sealing cavities, the sprocket transmission mechanisms are arranged between the sealing bearing seats and the outer housings, and the end portion of one of the second rollers extends out of the outer housing and is in transmission connection with the second driving motor.

[0010] Optionally, a plurality of second driving motors are arranged at equal intervals, and the main shaft of each of the second driving motors is in transmission connection with the shaft end of one of the second rollers.

[0011] Optionally, a plurality of layers of stainless steel curtains are arranged in the feeding chamber and the discharging chamber, and sealing flange covers are arranged on the housings of the feeding chamber and the discharging chamber.

[0012] Optionally, walking wheels are arranged at the lower portions of the feeding chamber and the discharging chamber.

[0013] Optionally, the first sprocket transmission mechanism comprises a plurality of sprockets and chains, one end of each of the first rollers is provided with two sprockets, and the sprockets on every two adjacent first rollers are connected through chains.

[0014] Optionally, the second sprocket transmission mechanism comprises a plurality of sprockets and chains, one end of each of the first rollers is provided with two sprockets, and the sprockets on every two adjacent first rollers are connected through chains; the second sprocket transmission mechanism further comprises a driven sprocket, the driven sprocket is arranged at the shaft head position of the first second roller extending out of the brazing chamber housing, a driving sprocket is arranged on the main shaft of the driving motor, and the driving sprocket is connected with the driven sprocket through a chain.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The muffle-free aluminum brazing furnace of the utility model conveys materials through a plurality of first sealing roller conveying devices and second sealing roller conveying devices, sets heat preservation layers and heating elements in the brazing chamber, and makes the temperatures in the feeding chamber, the brazing chamber, the cooling chamber and the discharging chamber relatively stable, so that the materials are conveyed without using a transmission mesh belt, repeated heating and freezing of the mesh belt are avoided, and energy consumption and equipment maintenance cost are reduced.

[0017] 2. The utility model discloses a heating muffle is removed, and manufacturing and maintenance cost are reduced.

[0018] In order to make the above content of the utility model more obvious and easy to understand, the following preferred embodiment is specifically raised, and the detailed description is as follows in combination with the drawings. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other design schemes and drawings can be obtained according to these drawings without the creative labor for the ordinary skilled in the art.

[0020] Figure 1 It is the full section structure schematic diagram of the muffle-free aluminum brazing furnace of the utility model;

[0021] Figure 2 It is Figure 1 The cross section structure schematic diagram of A-A place in;

[0022] Figure 3 It is Figure 1 The cross section structure schematic diagram of B-B place in;

[0023] Figure 4 It is Figure 3 The local enlarged structure diagram of feeding chamber in;

[0024] Figure 5 It is Figure 3 The local enlarged structure diagram of brazing chamber in.

[0025] In the above figure: 1, feeding chamber;101, feeding door;102, support frame;2, brazing chamber;201, sealed cavity;3, cooling chamber;4, discharging chamber;401, discharging door;5, first sealed roller shaft conveying device;501, first roller frame;502, first roller shaft;503, first drive motor;504, first chain wheel transmission mechanism;6, heat preservation layer;7, heating element;8, second sealed roller shaft conveying device;801, second roller frame;802, second roller shaft;803, second drive motor;804, sealed bearing seat;805, second chain wheel transmission mechanism;9, nitrogen input pipe;10, stainless steel curtain;11, sealing flange cover;12, walking wheel;13, smoke exhaust treatment system;14, brazing material.

[0026] The utility model will be further explained in detail in combination with the drawings and embodiments below. DETAILED DESCRIPTION

[0027] Embodiment 1

[0028] Reference Figure 1 、 Figure 2 and Figure 3 The utility model discloses an aluminium brazing furnace without muffle, including the feeding chamber 1, the brazing chamber 2, the cooling chamber 3 and the discharge chamber 4 that are sealedly connected in proper order through the flange from front to back, the inside of feeding chamber 1 and cooling chamber 3 and discharge chamber 4 all are provided with first sealing roller shaft conveying device 5, the brazing chamber 2 includes inner chamber body and sets up the outer shell on the outside of inner chamber body, the sealed cavity 201 with hollow between inner chamber body and outer shell, the inner wall on inner chamber body is provided with heat preservation layer, installs heating element 7 on heat preservation layer, still be provided with the second sealing roller shaft conveying device 8 that penetrates brazing chamber 2 in inner chamber body, the second roller shaft 802 of second sealing roller shaft conveying device 8 penetrates in proper order inner chamber body, sealed cavity, outer shell later, with between outer shell static sealing connection.

[0029] The front end of the feeding chamber 1 is provided with an electric feeding door 101, and the rear end of the discharge chamber 4 is provided with an electric discharge door 401.

[0030] In use, the feeding door 101 is opened, the brazing material 14 is placed on the first sealing roller shaft conveying device 5, the first sealing roller shaft conveying device 5 conveys the brazing material 14 into the feeding chamber 1, then the brazing material 14 enters the brazing chamber 2, the heating element 7 heats the brazing chamber 2 in the conveying process of the brazing material 14 through the brazing chamber 2 by the second sealing roller shaft conveying device 8, the nitrogen input pipe 9 is provided below the second sealing roller shaft conveying device 8 in the brazing chamber 2, a plurality of small holes are arranged on the nitrogen input pipe 9, nitrogen is dispersed in the brazing chamber 2 through the small holes on the nitrogen input pipe 9, the brazing material 14 is heated by the heating element 7 and protected by nitrogen in the conveying process of the second sealing roller shaft conveying device 8, and the brazing material 14 is not oxidized, until the brazing material 14 is sent to the cooling chamber 3, slowly cools in the conveying process of the first sealing roller shaft conveying device 5 in the cooling chamber 3, then the brazing material 14 is sent into the discharge chamber 4 by the first sealing roller shaft conveying device 5, and finally is sent out from the discharge door 401.

[0031] The aluminium brazing furnace without muffle sets the first sealing roller shaft conveying device in the feeding chamber, the cooling chamber and the discharge chamber, sets the second sealing roller shaft conveying device in the brazing chamber, conveys the material through the first sealing roller shaft conveying device and the second sealing roller shaft conveying device, sets the heat preservation layer and the heating element in the brazing chamber, temperature in the feeding chamber, the brazing chamber, the cooling chamber and the discharge chamber is relatively stable, the material is conveyed by avoiding using the transmission mesh belt, repeated heating and freezing of the mesh belt are avoided, and energy consumption and equipment maintenance cost are reduced.

[0032] Embodiment 2

[0033] Reference Figure 1 、 Figure 3 andFigure 4 On the basis of embodiment 1, the first sealed roller conveying device 5 comprises a plurality of pairs of first roller frames 501, a plurality of first rollers 502 and a first driving motor 503, a first sprocket transmission mechanism 504 is arranged between the ends of every two adjacent first rollers 502, and the first driving motor 503 is in transmission connection with the end of the first roller 502. Preferably, the first sprocket transmission mechanism 103 comprises a plurality of sprockets and chains, one end of each first roller 502 is provided with two sprockets, and the sprockets on every two adjacent first rollers 502 are connected by a chain.

[0034] The feeding chamber 1, the cooling chamber 3 and the discharging chamber 4 all have sealed outer housings which are arranged on a support frame 102; the first sealed roller conveying device 5 is arranged in the outer housing, nitrogen gas cannot leak, one end of each first roller 502 is provided with two sprockets, the sprockets on every two adjacent first rollers 502 are connected by a transmission chain to form the first sprocket transmission mechanism 504, each first roller 502 is synchronously connected through the first sprocket transmission mechanism 504 in sequence, and when the first driving motor 503 drives the first first roller 502 on one side to rotate through the sprocket and the transmission chain, each first roller 502 rotates synchronously.

[0035] Embodiment 3

[0036] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5 On the basis of embodiment 1, the second sealed roller conveying device 8 comprises a plurality of pairs of second roller frames 801, a plurality of second rollers 802 and a second driving motor 803, a sealed bearing seat 804 is arranged between each second roller 802 and the heat preservation layer 6 at both ends, a second sprocket transmission mechanism 805 is arranged between the ends of every two adjacent second rollers 802, and the main shaft of the second driving motor 803 is in transmission connection with the end of one second roller 802. Preferably, the second sprocket transmission mechanism 805 comprises a plurality of sprockets and chains, one end of each first roller 502 is provided with two sprockets, and the sprockets on every two adjacent first rollers 502 are connected by a chain. The second sprocket transmission mechanism 805 further comprises a driven sprocket which is installed at the shaft head position of the first second roller 802 which extends out of the outer housing of the brazing chamber 2, the main shaft of the driving motor is provided with a driving sprocket, and the driving sprocket is connected with the driven sprocket through a chain.

[0037] The second sealing roller conveying device 8 is arranged in the brazing chamber 2, two sprockets are arranged at the same end of each second roller 802 in the second sealing roller conveying device 8, one sprocket between every two adjacent second rollers 802 is connected to form a second sprocket transmission mechanism 805, each second roller 802 is synchronously connected through the second sprocket transmission mechanism 805 in sequence, and one end of a first second roller 802 in the second sealing roller conveying device 8 extends out of the brazing chamber 2. When the first second roller 802 on one side is driven to rotate by the second driving motor 803 through the sprocket and the transmission chain, each second roller 802 rotates synchronously.

[0038] Embodiment 4

[0039] With reference to Figure 1 、 Figure 3 and Figure 5 , on the basis of embodiment 3, a sealing cavity 201 is further arranged between the outer shell of the brazing chamber 2 and the heat preservation layer 6, the shaft ends of the second rollers 802 extend into the sealing cavity 201, the sprocket transmission mechanism 805 is arranged between the sealing bearing seat 804 and the outer shell, and the end of one second roller 802 extends out of the outer shell and is in transmission connection with the second driving motor 803.

[0040] The brazing chamber 2 has a sealed outer shell and a sealed heat preservation layer 6, each pair of second roller frames 801 is arranged on the outer shell of the brazing chamber 2, and the two ends of the second roller 802 are arranged on the second roller frame 801 after rotating through the heat preservation layer 6, wherein the second sprocket transmission mechanism 805 is located in the sealing cavity 201 formed between the outer shell and the heat preservation layer 6 of the brazing chamber 2, so that nitrogen leakage can be avoided as much as possible.

[0041] Embodiment 5

[0042] With reference to Figure 1 and Figure 3 , on the basis of embodiment 4, a plurality of second driving motors 803 are arranged, the plurality of second driving motors 803 are arranged at equal intervals, and the main shaft of each second driving motor 803 is in transmission connection with the shaft end of one second roller 802.

[0043] Since the brazing chamber 2 is relatively long, the distribution range of the second sealing roller conveying device 8 is also relatively long, so that a second driving motor 803 needs to be arranged every four meters, each second driving motor 803 drives a plurality of second rollers 802 to rotate, and the conveying efficiency of the second sealing roller conveying device 8 on the brazing material 14 can be improved.

[0044] Embodiment 6

[0045] With reference to Figure 1On the basis of embodiment 1, a plurality of stainless steel curtains 10 are arranged in the feeding chamber 1 and the discharging chamber 4, and sealing flange covers 11 are arranged on the shells of the feeding chamber 1 and the discharging chamber 4.

[0046] The plurality of stainless steel curtains 10 can prevent external air from entering the feeding chamber 1 and the discharging chamber 4 and minimize the emission of nitrogen from the feeding chamber 1 and the discharging chamber 4.

[0047] Embodiment 7

[0048] Reference Figure 1 On the basis of embodiment 1, walking wheels 12 are arranged on the lower parts of the feeding chamber 1 and the discharging chamber 4.

[0049] When the temperature rises, the outer shells of the feeding chamber 1 and the discharging chamber 4 expand and elongate, and when the temperature decreases, the outer shells of the feeding chamber 1 and the discharging chamber 4 contract, at which time the walking wheels 12 can be used for adaptive movement.

[0050] Embodiment 8

[0051] Reference Figure 1 On the basis of embodiment 1, smoke treatment systems 13 are arranged on the feeding chamber 1 and the discharging chamber 4.

[0052] The smoke treatment systems 13 are arranged at the feeding door 101 of the feeding chamber 1 and the discharging door 401 of the discharging chamber 4, respectively, and are used for filtering and discharging the gas emitted from the feeding chamber 1 and the discharging chamber 4, and adopt a conventional filtering and discharging structure and are provided with filter chambers, exhaust fans and pipelines.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. The components and structures not described in detail in the present embodiment are common components and structures or common means in the industry, which are not described here.

Claims

1. A muffleless aluminum brazing furnace characterized by, The feeding chamber (1), the brazing chamber (2), the cooling chamber (3) and the discharging chamber (4) are sequentially sealed and connected through flanges; the feeding chamber (1), the cooling chamber (3) and the discharging chamber (4) are internally provided with first sealing roller shaft conveying devices (5); the brazing chamber (2) comprises an inner chamber body and an outer shell body arranged outside the inner chamber body, the inner chamber body and the outer shell body have a hollow sealing cavity (201) therebetween, the inner wall of the inner chamber body is provided with a heat preservation layer, the heat preservation layer is provided with a heating element (7), and the inner chamber body is further provided with a second sealing roller shaft conveying device (8) penetrating through the brazing chamber (2), the second roller shaft (802) of the second sealing roller shaft conveying device (8) is sequentially connected with the outer shell body through the inner chamber body, the sealing cavity and the outer shell body and is in static sealing connection with the outer shell body.

2. The muffleless aluminum brazing furnace of claim 1, wherein, The brazing chamber (2) is provided with a nitrogen input pipe (9) below the second sealing roller shaft conveying device (8).

3. The muffleless aluminum brazing furnace of claim 1, wherein, The first sealing roller shaft conveying device (5) comprises multiple pairs of first roller frames (501), multiple first roller shafts (502) and a first driving motor (503), the end portions of every two adjacent first roller shafts (502) are provided with a first chain wheel transmission mechanism (504), and the first driving motor (503) is in transmission connection with the end portion of the first roller shaft (502).

4. The muffleless aluminum brazing furnace of claim 1, wherein, The second sealing roller shaft conveying device (8) comprises multiple pairs of second roller frames (801), multiple second roller shafts (802) and a second driving motor (803), the two ends of each second roller shaft (802) are respectively provided with a sealing bearing seat (804) between the heat preservation layer (6), and the end portions of every two adjacent second roller shafts (802) are respectively provided with a second chain wheel transmission mechanism (805), and the main shaft of the second driving motor (803) is in transmission connection with the end portion of one of the second roller shafts (802).

5. The muffleless aluminum brazing furnace of claim 4, wherein, The shaft ends of the second roller shafts (802) extend into the sealing cavity (201), the chain wheel transmission mechanism (805) is arranged between the sealing bearing seat (804) and the outer shell body, and the end portion of one of the second roller shafts (802) extends out of the outer shell body and is in transmission connection with the second driving motor (803).

6. The muffleless aluminum brazing furnace of claim 4, wherein, The second driving motor (803) is provided with multiple second driving motors (803), the multiple second driving motors (803) are equidistantly spaced, and the main shaft of each second driving motor (803) is in transmission connection with the shaft end of one of the second roller shafts (802).

7. The muffleless aluminum brazing furnace of claim 1, wherein, Multiple layers of stainless steel curtains (10) are arranged in the feeding chamber (1) and the discharging chamber (4), and sealing flange covers (11) are arranged on the housings of the feeding chamber (1) and the discharging chamber (4).

8. The muffleless aluminum brazing furnace of claim 1, wherein, Walking wheels (12) are arranged at the lower portions of the feeding chamber (1) and the discharging chamber (4).

9. The muffleless aluminum brazing furnace of claim 3 wherein, The first chain wheel transmission mechanism (504) comprises a plurality of chain wheels and chains, one end of each first roller shaft (502) is provided with two chain wheels, and the chain wheels on every two adjacent first roller shafts (502) are connected through chains.

10. The muffleless aluminum brazing furnace of claim 4 wherein, The second sprocket transmission mechanism (805) comprises a plurality of sprockets and chains, each first roller (502) is provided with two sprockets at one end, and the sprockets on every two adjacent first rollers (502) are connected by a chain; the second sprocket transmission mechanism (805) further comprises a driven sprocket, the driven sprocket is installed at the shaft head position of the first second roller (802) extending out of the shell of the brazing chamber (2), and the main shaft of the driving motor is provided with a driving sprocket, and the driving sprocket is connected with the driven sprocket through a chain.

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