Brazing furnace expansion joint structure

Abstract

The utility model provides an expansion joint structure of a brazing furnace, which is used for connecting a driving muffle and a refrigeration muffle of the brazing furnace and comprises a first flange, a second flange and a corrugated pipe, a flange plate of the first flange is connected with a port of the driving muffle; a flange plate of the second flange is connected with a port of the refrigeration muffle, and a pipe orifice of the second flange is inserted into a port of the first flange; the corrugated pipe is sleeved on the outer sides of pipe orifices of the first flange and the second flange, and two ends of the corrugated pipe are respectively connected with flange plates of the first flange and the second flange. The expansion joint structure of the brazing furnace not only can adapt to the deformation of the refrigeration muffle, but also can slow down the leakage of the refrigerating capacity of the refrigeration muffle.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of industrial brazing furnace, specifically relates to a brazing furnace expansion joint structure. BACKGROUND

[0002] At present, the conventional brazing mesh belt conveying heating furnace is the integral structure, due to the existence of the heating muffle and the refrigeration muffle, the size of the brazing furnace can be changed at the refrigeration muffle, the deformation noise and the gap can be produced at the connecting place or the welding place of the brazing furnace, and the refrigeration leakage can be further caused in the refrigeration muffle. CONTENT

[0003] In view of this, the utility model discloses a brazing furnace expansion joint structure, which is used to overcome the above problems or at least partially solve or alleviate the above problems.

[0004] The utility model discloses a brazing furnace expansion joint structure for connecting the driving muffle and the refrigeration muffle of the brazing furnace, comprising:

[0005] The flange plate of the first flange is connected with the port of the driving muffle;

[0006] The flange plate of the second flange is connected with the port of the refrigeration muffle, and the pipe opening of the second flange is inserted into the port of the first flange;

[0007] The bellows is sleeved on the outside of the pipe opening of the first flange and the second flange, and the two ends of the bellows are connected with the flange plates of the first flange and the second flange respectively.

[0008] The utility model also has the following optional features.

[0009] Optionally, the pipe sleeve is welded on the outside of the pipe opening of the first flange, and the pipe opening of the second flange is inserted into the pipe sleeve.

[0010] Optionally, the inner diameter of the pipe sleeve is equal to the outer diameter of the pipe opening of the second flange.

[0011] Optionally, the inner sides of the two ends of the bellows are respectively provided with the first ring pad and the second ring pad.

[0012] Optionally, the bellows is filled with thermal insulation cotton between the first flange and the second flange.

[0013] The brazing furnace expansion joint structure of the utility model realizes the guidance and the certain sealing by inserting the pipe opening of the second flange into the port of the first flange, realizes the secondary sealing through the bellows, and there is annular space between the bellows and the first flange and the second flange, not only solve the deformation problem of the refrigeration muffle, but also slow down the refrigeration leakage of the refrigeration muffle. Attached Figure Description

[0014] Figure 1 This is a full sectional view of the expansion joint structure of the brazing furnace of this utility model.

[0015] In the above diagram: 1. First flange; 2. Pipe sleeve; 3. Second flange; 4. Bellows; 5. First ring gasket; 6. Second ring gasket; 7. Drive muffle; 8. Refrigeration muffle.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0017] Example 1

[0018] refer to Figure 1 This utility model provides an expansion joint structure for a brazing furnace, used to connect the driving muffle 7 and the cooling muffle 8 of the brazing furnace. It includes: a first flange 1, a second flange 3, and a bellows 4; the flange of the first flange 1 is connected to the port of the driving muffle 7; the flange of the second flange 3 is connected to the port of the cooling muffle 8, and the port of the second flange 3 is inserted into the port of the first flange 1; the bellows 4 is fitted around the ports of the first flange 1 and the second flange 3, and both ends of the bellows 4 are connected to the flanges of the first flange 1 and the second flange 3, respectively.

[0019] In use, the first flange 1 is connected to the port of the driving muffle 7 via a flange and bolts, and the second flange is connected to the port of the refrigeration muffle 8 via a flange and bolts. The pipe end of the second flange 3 is inserted into the port of the first flange 1, which not only serves as a guide but also creates an annular space between the pipe end of the second flange 3, the port of the first flange 1, and the bellows 4. This annular space slows down heat transfer between the refrigeration muffle 8 and the bellows 4. When the refrigeration muffle 8 deforms, the pipe end of the second flange 3 slides within the port of the first flange 1 without affecting the seal, while the bellows 4 also expands and contracts.

[0020] Example 2

[0021] refer to Figure 1 Based on Embodiment 1, a sleeve 2 is welded to the outside of the pipe opening of the first flange 1, and the pipe opening of the second flange 3 is inserted into the sleeve 2.

[0022] The sleeve 2 is welded to the outside of the pipe opening of the first flange 1, and the pipe opening of the second flange 3 is slidably fitted with the sleeve 2.

[0023] Example 3

[0024] refer to Figure 1On the basis of the embodiment 2, the inner diameter of the sleeve 2 is equal to the outer diameter of the pipe orifice of the second flange 3.

[0025] The pipe orifice of the first flange 1 and the pipe orifice of the second flange 3 are equal in size, one end of the sleeve 2 is sleeved outside the pipe orifice of the first flange 1 and is welded and fixed, and the other end of the sleeve 2 is sleeved outside the pipe orifice of the second flange 3.

[0026] Embodiment 4

[0027] Reference Figure 1 On the basis of the embodiment 1, the inner sides of the two ends of the bellows 4 are respectively provided with the first ring gasket 5 and the second ring gasket 6.

[0028] Since the bellows 4 is made of thin metal, the bolt connection parts of the two ends of the bellows 4 are prone to deformation, which leads to poor sealing performance of the two ends of the bellows 4, in order to improve the sealing performance of the connection of the two ends of the bellows 4, the first ring gasket 5 and the second ring gasket 6 are respectively sleeved outside the two ends of the bellows 4, and then the bellows 4 is connected with the flange plates of the first flange 1 and the second flange 3 through bolts respectively.

[0029] Embodiment 5

[0030] Reference Figure 1 On the basis of the embodiment 1, the bellows 4 is filled with thermal insulation cotton between the first flange 1 and the second flange 3.

[0031] In order to further improve the heat insulation of the annular space between the pipe orifice of the second flange 3 and the port of the first flange 1 and the bellows 4, thermal insulation cotton is filled therein, the thermal insulation cotton not only has good heat insulation performance, but also has elasticity and will not affect the expansion performance of the bellows 4.

[0032] 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 limited by the protection scope of the claims. The components and structures not described in detail in the embodiment are common components and structures or common means in the industry, which are not described here.

Claims

1. A structure of a brazing furnace expansion joint for connecting a driving muffle (7) and a refrigeration muffle (8) of a brazing furnace, characterized in that, The utility model relates to a refrigeration device for a driving muffle and a refrigeration muffle, and belongs to the field of refrigeration device. It comprises: a first flange (1), the flange plate of which is connected with the port of the driving muffle (7); a second flange (3), the flange plate of which is connected with the port of the refrigeration muffle (8), and the pipe mouth of which is inserted into the port of the first flange (1); 2. The structure of the brazing expansion joint according to claim 1, wherein a bellows (4), which is sleeved outside the pipe mouth of the first flange (1) and the second flange (3), and the two ends of which are respectively connected with the flange plates of the first flange (1) and the second flange (3).

3. The structure of the brazing expansion joint according to claim 2, wherein A pipe sleeve (2) is welded outside the pipe mouth of the first flange (1), and the pipe mouth of the second flange (3) is inserted into the pipe sleeve (2).

4. The structure of the brazing expansion joint according to claim 1, wherein The inner diameter of the pipe sleeve (2) is equal to the outer diameter of the pipe mouth of the second flange (3).

5. The structure of the brazing expansion joint according to claim 1, wherein The inner sides of the two ends of the bellows (4) are respectively provided with a first ring gasket (5) and a second ring gasket (6). The bellows (4) is filled with heat insulation cotton between the first flange (1) and the second flange (3).

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