Molybdenum heating band end connecting structure for vacuum heat treatment furnace

Abstract

The utility model provides a molybdenum heating band end connecting structure for a vacuum heat treatment furnace, and belongs to the technical field of vacuum heat treatment furnaces. Comprising a connecting buckle body, a molybdenum belt connecting clamping groove I is formed in one end of the connecting buckle body, a connecting end of a molybdenum heating belt I is inserted into the molybdenum belt connecting clamping groove I, and the end of the molybdenum heating belt I is connected with the connecting buckle body through a fixing screw; a molybdenum belt connecting clamping groove II is formed in the other end of the connecting buckle body, a connecting end of a molybdenum heating belt II is inserted into the molybdenum belt connecting clamping groove II, and the end of the molybdenum heating belt II is connected with the connecting buckle body through a fixing screw. The two symmetrical connecting clamping grooves are formed in the two sides of the connecting buckle body to form the I-shaped connecting buckle, the two ends of the two molybdenum heating belts are connected, the structure is simple to install, when one molybdenum heating belt needs to be replaced after being damaged, only the end of the damaged molybdenum heating belt needs to be detached, and the molybdenum heating belt can be replaced conveniently. The molybdenum heating belt is simple to disassemble and convenient to maintain and replace, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vacuum heat treatment furnace technical field, concretely relates to a molybdenum heating band end connection structure for vacuum heat treatment furnace. BACKGROUND

[0002] The heating body used in the vacuum heat treatment annealing furnace is a long strip molybdenum heating band, and the molybdenum heating band heats the parts after being electrified. The molybdenum heating band is installed and connected into a circle inside the vacuum annealing furnace, and the parts are placed in it for heating. The molybdenum heating band in a circle is generally spliced by at least two or more molybdenum heating bands, and currently, the end of the two molybdenum heating bands is fixed by clamping and stacking the two ends together through a gasket, and this connection mode has the following disadvantages: first, the connection structure is not durable, and the service life is short; second, the molybdenum band is damaged in the furnace due to the alternating cold and hot, and needs to be replaced, and the current connection mode is not convenient to disassemble and replace, and when replacing a molybdenum band, the adjacent molybdenum heating bands need to be disassembled and extracted, so that the disassembly and replacement operation is not convenient, and the maintenance and replacement efficiency is low.

[0003] Based on the above problems, it is urgent to design a molybdenum heating band end connection structure which is convenient to maintain and disassemble. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem: provide a molybdenum heating band end connection structure for vacuum heat treatment furnace, the utility model relates to the connection structure between the molybdenum heating band in the existing vacuum heat treatment furnace is inconvenient to maintain and replace and disassemble, and the problem of low work efficiency is solved.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of:

[0006] The molybdenum heating band end connection structure for vacuum heat treatment furnace includes a connecting buckle body, the connecting buckle body one end is equipped with molybdenum band connecting slot I, the molybdenum band connecting slot I inserts the connecting end of molybdenum heating band I, and the connecting end of molybdenum heating band I is connected with the connecting buckle body through fixed screw;The other end of the connecting buckle body is provided with molybdenum band connecting slot II, the connecting end of molybdenum heating band II is inserted into the molybdenum band connecting slot II, and the connecting end of molybdenum heating band II is also connected with the connecting buckle body through fixed screw.

[0007] Further limit to the above scheme, the outer surface of the head of molybdenum heating band I is in contact with the inner surface of molybdenum band connecting slot I;The outer surface of the head of molybdenum heating band II is in contact with the inner surface of molybdenum band connecting slot II.

[0008] Further to the above scheme, the connecting buckle body is provided with a molybdenum band connecting hole, the molybdenum band connecting hole is used for inserting a molybdenum heating band III, the molybdenum heating band III is in contact with the molybdenum band connecting hole and is connected through a fixing screw, and the molybdenum heating band III connects the upper and lower adjacent circular molybdenum heating bands.

[0009] Further to the above scheme, the connecting buckle body is provided with a molybdenum band connecting hole, the molybdenum band connecting hole is used for inserting a molybdenum heating band III, the molybdenum heating band III is in contact with the molybdenum band connecting hole and is connected through a fixing screw, and the molybdenum heating band III connects the upper and lower adjacent circular molybdenum heating bands.

[0010] Further to the above scheme, one end of the connecting hole I is provided with a countersunk groove I, the nut of the fixing screw is sunk in the countersunk groove I and is flush with the outer surface of the connecting buckle body, the other end of the connecting hole I is provided with a countersunk groove II, the fixing nut is sunk in the countersunk groove II after being screwed in place and the outer surface is flush with the outer surface of the connecting buckle body, and the end of the fixing screw screwed with the fixing nut is also flush with the outer surface of the connecting buckle body.

[0011] Further to the above scheme, the fixing screw and the fixing nut are made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy material.

[0012] Further to the above scheme, the connecting buckle body is made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy material.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The utility model discloses a connecting buckle is provided with two symmetrical connecting clamping grooves on both sides of a connecting buckle body, forms the connecting buckle of the I -shaped, and connects the both ends of two molybdenum heating bands, which has the advantages of simple structure and installation, simple disassembly, convenient maintenance and replacement, and improved work efficiency.

[0015] The both ends of the fixing screw and the fixing nut do not protrude and are flush with the connecting buckle body, which is not only beautiful but also can prevent the connecting screw from contacting the hearth and causing conduction due to the gap between the molybdenum heating band and the hearth.

[0016] 3、The connecting mode of the molybdenum heating band in the utility model can customize the connecting buckle according to the size of the heating band, can be used for connecting various tungsten-molybdenum alloy metal heating bands of the vacuum heat treatment furnace, can greatly improve the thermal conductivity, reduce the current and voltage loss, and increase the heat conversion rate compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The utility model discloses a structure sectional view of the utility model;

[0018] Figure 2 The utility model discloses a top view structure drawing of another embodiment of the utility model.

[0019] Figure 3 The utility model discloses a top view structure drawing of another embodiment of the utility model. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0021] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as the limitation on the utility model.

[0022] It needs to be explained that in this paper, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent to such process, method, article or equipment. Without more limitation. The element defined by the sentence "including a......", and does not exclude the existence of another same element in the process, method, article or equipment including the element.

[0023] Please refer to Figures 1-3 for the detailed description of the embodiments of the utility model.

[0024] Embodiment: the molybdenum heating band end connection structure for vacuum heat treatment furnace, refer to Figures 1-2 As shown in FIG. 1, it includes connecting buckle body 3, one end of connecting buckle body 3 is equipped with molybdenum band connecting slot I 3-1, the connecting end of molybdenum heating band I 1 is inserted in molybdenum band connecting slot I 3-1, and the end of molybdenum heating band I 1 is connected with connecting buckle body 3 through fixed screw 4;The other end of connecting buckle body 3 is equipped with molybdenum band connecting slot II 3-2, the connecting end of molybdenum heating band II 2 is inserted in molybdenum band connecting slot II 3-2, and the end of molybdenum heating band II 2 is also connected with connecting buckle body 3 through fixed screw 4.

[0025] In the embodiment, two symmetrical connecting clamping grooves are formed on both sides of the connecting buckle body to form an I-shaped connecting buckle for connecting two ends of the molybdenum heating belts. The structure is simple to install. When one molybdenum heating belt needs to be replaced, only the end of the damaged molybdenum heating belt needs to be disassembled from the connecting buckle body, without disassembling the other molybdenum heating belt connected thereto. The disassembly is simple, the maintenance and replacement are convenient, and the work efficiency is improved.

[0026] In a specific embodiment, refer to Figure 1 The outer surface of the head of the molybdenum heating belt I 1 is in contact with the inner surface of the molybdenum belt connecting clamping groove I 3-1, and the outer surface of the head of the molybdenum heating belt II 2 is in contact with the inner surface of the molybdenum belt connecting clamping groove II 3-2.

[0027] In the embodiment, the molybdenum heating belts are clamped and fixed between the corresponding connecting buckle grooves, and cannot be subjected to too much force. The belt is only required to have strength to ensure the conductivity between the molybdenum heating belts.

[0028] In a specific embodiment, refer to Figure 1-3 The connecting buckle body 3 is provided with a molybdenum belt connecting hole 3-4 in the middle, the molybdenum belt connecting hole 3-4 is used for inserting the molybdenum heating belt III 6, the molybdenum heating belt III 6 is in contact with the molybdenum belt connecting hole 3-4 and is connected through a fixing screw 4, the molybdenum heating belt III 6 is used for connecting the upper and lower adjacent circular molybdenum heating belts, and is used for mutual conduction of the upper circular molybdenum heating belts. As shown in Figure 2 and 3 .

[0029] In a specific embodiment, refer to Figure 1 The connecting buckle body 3 is provided with a connecting hole I 3-3, the molybdenum heating belt I 1 is provided with a connecting hole II 1-1, the fixing screw 4 passes through the connecting hole I 3-3 and the connecting hole II 1-1 and is screwed and fixed with a fixing nut 5; the fixing screw 4 used by the molybdenum heating belt II 2 and the molybdenum heating belt III 6 has the same fixing mode as the molybdenum heating belt I 1.

[0030] In the embodiment, the molybdenum heating belts are connected and fixed through screws and nuts, and the structure is simple and convenient to operate.

[0031] Further limitation of the above-mentioned embodiment: refer to Figure 1As shown, one end of the connecting hole Ⅰ3-3 is provided with a countersunk groove Ⅰ3-3-1, and the nut of the fixing screw 4 is sunk in the countersunk groove Ⅰ3-3-1 and flush with the outer surface of the connecting buckle body 3; the other end of the connecting hole Ⅰ3-3 is provided with a countersunk groove Ⅱ3-3-2, and the fixing nut 5 is sunk in the countersunk groove Ⅱ3-3-2 after being screwed in place and the outer surface is flush with the outer surface of the connecting buckle body 3, and the end of the fixing screw 4 screwed with the fixing nut 5 is also flush with the outer surface of the connecting buckle body 3.

[0032] In the embodiment, the fixing screw and the fixing nut are not protruding at both ends and are flush with the connecting buckle body, which is not only beautiful, but also can ensure that the connecting screw does not touch the hearth and prevent electric conduction due to the gap between the molybdenum heating belt and the hearth.

[0033] Preferably, the fixing screw 4 and the fixing nut 5 are made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy material.

[0034] Preferably, the connecting buckle body 3 is made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy material.

[0035] The above preferred mode is made of the same material as the molybdenum heating belt, which has the same high-temperature resistance as the molybdenum heating belt and can adapt to the high-temperature environment of the vacuum heat treatment furnace.

[0036] The connecting mode of the molybdenum heating belt can customize the connecting buckle according to the size of the heating belt and can be used for connecting various tungsten-molybdenum alloy metal heating belts of the vacuum heat treatment furnace. Compared with the existing connecting mode, the thermal conductivity can be greatly improved, the current voltage loss can be reduced, and the heat conversion rate can be increased.

[0037] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, and any reference signs in the claims should not be regarded as limiting the claims.

[0038] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A molybdenum heating band end connection structure for a vacuum heat treatment furnace, characterized by: The connecting buckle body (3) is provided with a molybdenum band connecting slot I (3-1) at one end, the connecting end of a molybdenum heating band I (1) is inserted into the molybdenum band connecting slot I (3-1), and the end of the molybdenum heating band I (1) is connected with the connecting buckle body (3) through a fixing screw (4); the other end of the connecting buckle body (3) is provided with a molybdenum band connecting slot II (3-2), the connecting end of a molybdenum heating band II (2) is inserted into the molybdenum band connecting slot II (3-2), and the end of the molybdenum heating band II (2) is also connected with the connecting buckle body (3) through a fixing screw (4).

2. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 1, characterized by: The outer surface of the head of the molybdenum heating band I (1) is in contact with the inner surface of the molybdenum band connecting slot I (3-1); the outer surface of the head of the molybdenum heating band II (2) is in contact with the inner surface of the molybdenum band connecting slot II (3-2).

3. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 1, characterized by: The connecting buckle body (3) is provided with a molybdenum band connecting hole (3-4) in the middle, the molybdenum band connecting hole (3-4) is used for inserting a molybdenum heating band III (6), the molybdenum heating band III (6) is in contact with the molybdenum band connecting hole (3-4) and is connected through a fixing screw (4), and the molybdenum heating band III (6) connects the adjacent circular molybdenum heating bands.

4. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 3, characterized by: The connecting buckle body (3) is provided with a connecting hole I (3-3), the molybdenum heating band I (1) is provided with a connecting hole II (1-1), the fixing screw (4) passes through the connecting hole I (3-3) and the connecting hole II (1-1) and is screwed with a fixing nut (5) to be fixed; the fixing mode of the fixing screw (4) used by the molybdenum heating band II (2) and the molybdenum heating band III (6) is the same as that of the molybdenum heating band I (1).

5. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 4, characterized by: One end of the connecting hole I (3-3) is provided with a countersunk groove I (3-3-1), the screw cap of the fixing screw (4) is sunken in the countersunk groove I (3-3-1) and is flush with the outer surface of the connecting buckle body (3); the other end of the connecting hole I (3-3) is provided with a countersunk groove II (3-3-2), the fixing nut (5) is sunk in the countersunk groove II (3-3-2) after being screwed in place and the outer surface is flush with the outer surface of the connecting buckle body (3), and the end of the fixing screw (4) screwed with the fixing nut (5) is also flush with the outer surface of the connecting buckle body (3).

6. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 5, characterized by: The fixing screw (4) and the fixing nut (5) are made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy materials.

7. The molybdenum heating band end connection structure for a vacuum heat treatment furnace according to claim 1, characterized by: The connecting buckle body (3) is made of high-temperature molybdenum, molybdenum lanthanum alloy, tungsten or tungsten alloy materials.

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