Lengthening device for aluminum vacuum brazing furnace

Abstract

The utility model relates to a lengthening device for an aluminum vacuum brazing furnace, which comprises two furnace bodies with different sizes, the large furnace body and the small furnace body are connected through the lengthening device, the lengthening device consists of an auxiliary positioning device and a connecting device, the auxiliary positioning device is mounted below the small furnace body, and the connecting device is mounted below the small furnace body. The center of the small furnace body and the center of the large furnace body are aligned by adjusting the auxiliary positioning devices, then the small furnace body and the large furnace body are connected and fixed through the connecting device, and the auxiliary positioning devices are installed at the front end and the rear end of the small furnace body respectively. The device has the advantages that the structure is simple and reasonable, furnace bodies with different flange sizes can be butted and mounted, the lengthened furnace body is flexible to mount and dismount, the sealing performance is good, and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum vacuum brazing furnace installation, and particularly relates to an aluminum vacuum brazing furnace lengthening device. Background Art

[0002] Vacuum brazing involves heating the workpiece within a vacuum chamber. It's primarily used for welding high-quality products and easily oxidized materials. This specialized equipment is suitable for vacuum brazing aluminum plate-fin heat exchangers in industries such as air separation, aviation, and petrochemicals.

[0003] The existing brazing furnace body is composed of a furnace chamber and a flange welded together. The length of the brazing furnace body determines the size of the brazing workpiece. If extra-long workpieces need to be brazed, the existing brazing furnace cannot meet the brazing requirements. Customized extended brazing furnaces are expensive and time-consuming, and extra-long workpieces are rare. If an extra-long brazing furnace is used for a long time, energy consumption is high. However, in an enterprise, two identical furnace chambers are very rare. Generally, purchases must be made in accordance with furnace chambers of different sizes suitable for different models of vacuum brazing products. Therefore, there are certain difficulties in the splicing and installation of furnace chambers of different sizes. For this reason, an aluminum vacuum brazing furnace extension device is designed to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an aluminum vacuum brazing furnace extension device with a simple and reasonable structure, which can dock furnace bodies with inconsistent installation flanges, has flexible installation and disassembly of the extended furnace body, and has good sealing.

[0005] The utility model is realized through the following technical scheme: an aluminum vacuum brazing furnace lengthening device, which includes two furnace bodies of different sizes, which are connected by a lengthening device, and the lengthening device is composed of an auxiliary positioning device and a connecting device, wherein the auxiliary positioning device is installed below the small furnace body, and the center of the small furnace body is aligned with the center of the large furnace body by adjusting the auxiliary positioning device, and then connected and fixed by the connecting device, and the auxiliary positioning device has at least two sets, which are respectively installed at the front and rear ends of the small furnace body.

[0006] Preferably, the auxiliary positioning device is composed of two lifts or jacks, on which support beams are welded, and a support beam is detachably mounted. The support beam is divided into parallel or arc structures according to the shape of the small furnace body, and is used for square or circular furnace bodies. After the center of the small furnace body is aligned with the center of the large furnace body by the lift or jack, they are connected by a connecting device.

[0007] Preferably, the connecting device is a connecting block, the openings at both ends of the connecting block correspond to the large and small furnace bodies, and flange openings are provided at both ends, which are sealed to the large and small furnace bodies through the flanges. The outer surface between the large opening and the small opening of the connecting block is provided with an inclined edge from top to bottom, and a buffer arc edge is provided on its inner surface near the small opening.

[0008] Preferably, the connecting device is a first pad installed at the opening on one side of the small furnace body, and a second pad provided on one side of the large furnace body. A clamping block is installed above the first pad on the side of the small furnace body. When the first pad is close to the second pad, its height is exactly half of the second pad. The clamping block supports the first pad on the side of the small furnace body from the bottom, and a screw is passed through the second pad from the top and then screwed together with a nut to fix it. After being screwed together, the clamping block and the second pad are covered with a sealing ring to prevent air leakage.

[0009] Preferably, the bottoms of the two lifts or jacks are equipped with rollers or embedded in guide rails for easy left and right movement.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model can meet the requirements of larger brazing workpiece sizes by docking with the existing brazing furnace. The overall use and installation are convenient, and the installation conditions of inconsistent docking flange sizes can be met, and the influence of welding stress deformation of the furnace body can be avoided. The furnace door is installed and used alone as an independent vacuum brazing equipment to meet the brazing requirements of workpieces of different lengths and specifications, saving energy consumption.

[0012] The utility model has the advantages of simple and reasonable structure, the ability to dock furnace bodies with inconsistent installation flange sizes, flexible installation and disassembly of the extended furnace body, good sealing, and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is a schematic diagram of the lift or jack structure at A of the present invention.

[0015] Figure 3 for Figure 2 Another structural diagram of .

[0016] Figure 4 It is a structural schematic diagram of the connecting device in the utility model.

[0017] Figure 5 This is another structural schematic diagram of the connecting device in the present utility model. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0020] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, an extension device for an aluminum vacuum brazing furnace includes two furnace bodies of different sizes, which are connected by an extension device 1. The extension device 1 consists of an auxiliary positioning device 2 and a connecting device 3. The auxiliary positioning device 2 is installed below the small furnace body 4. By adjusting the auxiliary positioning device 2, the center of the small furnace body 4 is aligned with the center of the large furnace body 5, and then connected and fixed by the connecting device 3. There are at least two sets of the auxiliary positioning devices 2, which are respectively installed at the front and rear ends of the small furnace body 4.

[0021] like Figure 2-3 As shown, the auxiliary positioning device 2 is composed of two lifts or jacks 6, on which support beams 7 are welded, and a support beam 8 is detachably mounted on the support beam 7. The support beam 8 is divided into a parallel or arc structure according to the shape of the small furnace body 4, and is used for square or circular furnace bodies. After the center of the small furnace body 4 is aligned with the center of the large furnace body by the lift or jack 6, it is connected by the connecting device 3.

[0022] It is worth noting that the auxiliary positioning device of the present invention can be flexibly adjusted. When it is a relatively small device, the auxiliary positioning device uses a jack for auxiliary positioning. When it is a large device, a lift is used for auxiliary positioning, thereby making the overall assembly work more efficient, more flexible and practical.

[0023] like Figure 4 As shown, the connecting device 3 can be a connecting block 17, the openings at both ends of the connecting block 17 correspond to the large and small furnace bodies, and flange openings 9 are provided at both ends, which are sealed to the large and small furnace bodies through the flanges. The outer surface between the large opening and the small opening of the connecting block 17 is provided with an inclined edge 10 from top to bottom, and a buffer arc edge 11 is provided on its inner surface near the small opening.

[0024] like Figure 5As shown, the connecting device 3 can also be a first pad 12 installed at the opening on one side of the small furnace body 4, and a second pad 13 installed on the side of the large furnace body 5. A clamping block 14 is installed above the first pad 12 on the side of the small furnace body 4. When the first pad 12 is close to the second pad, its height is exactly half of the second pad 13. The clamping block 14 supports the first pad 12 on the side of the small furnace body 4 from below. A screw 20 is passed through the second pad and then screwed together with a nut 19 to fix it. After being screwed together, the clamping block 14 and the second pad 13 are covered with a sealing ring 18 to prevent air leakage. The bottoms of the two lifts or jacks 6 are installed with rollers 15 or embedded in guide rails 16 to facilitate left and right movement.

[0025] The working process of this utility model is as follows:

[0026] First install the guide rails according to the specified position, and then place and install lifts or jacks with rollers on the guide rails. Then, place the small furnace body on the lift or jack through the overhead crane. Then, adjust the distance between the small furnace body and the large furnace body on the guide rails through the rollers. Then adjust the height of the small furnace body through the lift or jack so that the center of the small furnace body is aligned with the center of the large furnace body. Finally, the connection between the small furnace body and the large furnace body is achieved through the above two forms of connecting devices (connecting blocks with flanges or fixed with pads, clamps and screws). After the connection, the airtightness between the small furnace body and the large furnace body can be checked by passing gas or by vacuuming. The whole process is convenient and simple, highly practical and has a wide range of applications.

[0027] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. An extension device for an aluminum vacuum brazing furnace, comprising two furnace bodies of different sizes, the furnace bodies of different sizes being connected by an extension device, characterized in that: The lengthening device is composed of an auxiliary positioning device and a connecting device, wherein the auxiliary positioning device is installed under the small furnace body. The center of the small furnace body is aligned with the center of the large furnace body by adjusting the auxiliary positioning device, and then connected and fixed by the connecting device. There are at least two sets of the auxiliary positioning device, which are respectively installed at the front and rear ends of the small furnace body.

2. The aluminum vacuum brazing furnace extension device according to claim 1, characterized in that: The auxiliary positioning device is composed of two lifts or jacks, on which support beams are welded, and on which support beams are detachably mounted. The support beams are divided into parallel or arc structures according to the shape of the small furnace body, and are used for square or round furnace bodies. After the center of the small furnace body is aligned with the center of the large furnace body by the lift or jack, they are connected by a connecting device.

3. The aluminum vacuum brazing furnace extension device according to claim 2 is characterized in that: The connecting device is a connecting block, the openings at both ends of the connecting block correspond to the large and small furnace bodies, and flange openings are provided at both ends, which are sealed and connected to the large and small furnace bodies through the flanges. The outer surface between the large opening and the small opening of the connecting block is provided with an inclined edge from top to bottom, and a buffer arc edge is provided on the inner surface near the small opening.

4. The aluminum vacuum brazing furnace lengthening device according to claim 2, characterized in that: The connecting device is a first pad installed at the opening on one side of the small furnace body, and a second pad arranged on one side of the large furnace body. A clamping block is installed above the first pad on one side of the small furnace body. When the first pad is close to the second pad, its height is exactly half of the second pad. The clamping block supports the first pad on one side of the small furnace body from the bottom, and a screw is passed through the second pad from the top and then screwed together with a nut to fix it. After being screwed together, the clamping block and the second pad are covered with a sealing ring to prevent air leakage.

5. The aluminum vacuum brazing furnace extension device according to claim 2, characterized in that: The bottoms of the two lifts or jacks are provided with rollers or embedded in guide rails for easy left and right movement.

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