Burnout-resistant heating furnace radiant tube

Abstract

The utility model relates to the technical field of radiant tubes, and particularly discloses an anti-burning heating furnace radiant tube which comprises a mounting seat, a tube body is fixedly connected to the middle of the top end of the mounting seat in a penetrating mode, an upper cover is fixedly connected to the top end of the tube body, and a plurality of positioning mechanisms are fixedly connected to the inner wall of the tube body at equal intervals. The positioning mechanism comprises a connecting cover, a guide-in seat, a mounting groove and high-temperature-resistant rubber, the guide-in seat is fixedly connected to the top end of the connecting cover, two supporting columns are fixedly connected to each of the two sides of the outer surface of the connecting cover, the mounting groove is formed in the middle of the inner wall of the connecting cover, and the high-temperature-resistant rubber is fixedly connected into the mounting groove in a penetrating mode; multiple penetrating holes are formed in the outer surface of the connecting cover at equal intervals. The ends, away from the connecting cover, of the supporting columns are fixedly connected to the inner wall of the pipe body. According to the utility model, the magnesium oxide powder is arranged and is filled in the tube body, so that the electric heating wire is fixed through the magnesium oxide powder, the oxide skin does not fall off any more, short-circuit ignition is avoided, and the oxidation of the electric heating wire is reduced at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of radiation tubes, and in particular relates to a heating furnace radiation tube which is resistant to burning. Background Art

[0002] Radiant tubes are pipes that extend in straight lines from the center in all directions. They are non-central pipes that transport materials from the main pipe to designated or non-designated locations. Radiant tubes are widely used in heating furnaces and are the main heating elements of heating furnaces.

[0003] In the Chinese patent with publication number CN214095557U, a radiant tube for a heating furnace is mentioned, which relates to the technical field of radiant tubes. The radiant tube for a heating furnace comprises a shell, wherein the interior of the shell is provided with a plurality of support rings in a rectangular array, wherein a plug hole is provided inside the support ring, wherein the interior of the plug hole is U-shaped and a heating wire is plugged in, and a high-temperature resistant rubber block is fixed in the middle of the inner wall of the plug hole. In the utility model, the high-temperature resistant rubber block in the middle of the plug hole can prevent the heating wires wound in a U shape from contacting each other, thereby greatly reducing the probability of a short circuit of the heating wire. At the same time, the radius of the high-temperature resistant rubber block is smaller than the width of the plug hole, and the high-temperature resistant rubber block is deformable. Therefore, the support ring can be directly passed through the heating wire, which greatly improves the convenience of assembling the heating wire and the support ring. Through the action of the limit plate, the top block and the spring, the support ring can be automatically reset after thermal expansion and contraction, so as to improve the stability of the device during subsequent use. During the use of the radiation tube, the electric radiation tube of the heat treatment continuous furnace has worked for a long time, and the oxide scale of the heating wire will fall off. The oxide scale falls on the ceramic insulating support frame, and the heating wire and the tube wall short-circuit and ignite, burning through the tube wall, and the device sprays fire outward to burn the circuit. At the same time, the flammable gas leaks and contacts the ignition source, which will cause a fire or explosion, causing casualties and property losses, thereby resulting in low safety.

[0004] In addition, when the heating wire and the pipe wall short-circuit and ignite and burn through the pipe wall, the equipment is damaged and needs to be replaced, resulting in a certain amount of resource waste. Utility Model Content

[0005] The utility model aims to provide a heating furnace radiation tube which is resistant to burning, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A heating furnace radiation tube resistant to burning, comprising:

[0008] Mounting seat;

[0009] A tube body is fixedly inserted and connected in the middle of the top of the mounting seat, an upper cover is fixedly connected to the top of the tube body, and a plurality of positioning mechanisms are fixedly connected to the inner wall of the tube body at equal distances;

[0010] The positioning mechanism includes a connecting cover, an introduction seat, a mounting groove and high temperature resistant rubber. The introduction seat is fixedly connected to the top of the connecting cover. Two support columns are fixedly connected to both sides of the outer surface of the connecting cover. The mounting groove is opened in the middle of the inner wall of the connecting cover. The high temperature resistant rubber is fixedly inserted and connected in the mounting groove. A plurality of through holes are opened at equal distances on the outer surface of the connecting cover. The ends of the support columns away from the connecting cover are fixedly connected to the inner wall of the tube body.

[0011] Preferably, a socket is movably connected to the lower inner wall of the tube body, a connecting rod is fixedly connected to the middle of the top end of the socket, a heating wire is wrapped around the outer surface of the connecting rod, a plurality of support frames are fixedly connected to the outer surface of the connecting rod at equal distances, and a through groove is provided at one end of the outer surface of the support frame.

[0012] Preferably, the through grooves are all connected with the heating wires through insertion.

[0013] Preferably, magnesium oxide powder is commonly filled between the tube body, the connecting rod, the positioning mechanism, the support frame and the heating wire.

[0014] Preferably, the introduction seat is configured as a conical structure, and the introduction seat and the connection cover are both sleeved on the outer surface of the through groove and the heating wire.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) By arranging magnesium oxide powder, a connection cover, an introduction seat, an installation groove, a perforation, a support column and a high temperature resistant rubber, the magnesium oxide powder is fully filled between the tube body, the connection rod, the positioning mechanism, the support frame and the heating wire. When in use, the heating wire heats up. Under high temperature conditions, the high temperature resistant rubber will undergo thermal expansion. After the expansion, the high temperature resistant rubber will squeeze the magnesium oxide powder, so that the magnesium oxide powder is tightly attached to the outer surface of the heating wire, so that the magnesium oxide powder wraps the heating wire. When the heating wire is used for a long time, the oxide scale of the heating wire will no longer fall off, thereby preventing the heating wire and the tube wall of the tube body from short-circuiting and igniting. At the same time, the oxidation of the heating wire is also reduced, the occurrence of safety accidents is reduced, and the safety of the working environment is improved.

[0017] (2) By eliminating the short circuit and ignition between the heating wire and the tube wall, the tube wall will not be burned through, avoiding the frequent replacement of the device, thereby extending the service life of the device, reducing losses and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 for Figure 2 The enlarged view of the utility model A in FIG.

[0021] Figure 4 This is the internal connection diagram of the pipe body of the utility model;

[0022] Figure 5 It is a connection diagram of the positioning mechanism of the utility model;

[0023] In the figure: 1. mounting seat; 2. tube body; 3. upper cover; 4. socket; 5. connecting rod; 6. positioning mechanism; 7. support frame; 8. slot; 9. heating wire; 10. magnesium oxide powder; 61. connecting cover; 62. introduction seat; 63. mounting slot; 64. through hole; 65. support column; 66. high temperature resistant rubber. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1 - Figure 5 As shown, a burn-resistant heating furnace radiation tube comprises:

[0027] Mounting seat 1;

[0028] A tube body 2 is fixedly connected and inserted in the middle of the top of the mounting seat 1, an upper cover 3 is fixedly connected to the top of the tube body 2, and a plurality of positioning mechanisms 6 are fixedly connected to the inner wall of the tube body 2 at equal distances;

[0029] The positioning mechanism 6 includes a connecting cover 61, an introduction seat 62, a mounting groove 63 and a high temperature resistant rubber 66. The introduction seat 62 is fixedly connected to the top of the connecting cover 61. Two support columns 65 are fixedly connected to both sides of the outer surface of the connecting cover 61. The mounting groove 63 is opened in the middle of the inner wall of the connecting cover 61. The high temperature resistant rubber 66 is fixedly inserted and connected in the mounting groove 63. A plurality of through holes 64 are opened at equal distances on the outer surface of the connecting cover 61. The ends of the support columns 65 away from the connecting cover 61 are fixedly connected to the inner wall of the tube body 2.

[0030] Depend on Figure 1 - Figure 4It can be seen that a socket 4 is movably connected to the lower part of the inner wall of the tube body 2, a connecting rod 5 is fixedly connected to the middle part of the top end of the socket 4, an electric heating wire 9 is wound around the outer surface of the connecting rod 5, and a number of support frames 7 are fixedly connected to the outer surface of the connecting rod 5 at equal distances, and a through groove 8 is opened at one end of the outer surface of the support frame 7; magnesium oxide powder 10 is commonly filled between the tube body 2, the connecting rod 5, the positioning mechanism 6, the support frame 7 and the electric heating wire 9.

[0031] As can be seen from the above, the socket 4, the support frame 7, and the heating wire 9 are all inserted into the tube body 2, and the top end of the connecting rod 5 is tightly attached to the top end of the inside of the tube body 2, so that the heating wire 9 is located in several positioning mechanisms 6, and then the magnesium oxide powder 10 is introduced into the tube body 2 from the top end of the tube body 2, and introduced into the connecting cover 61 through the top end of the introduction seat 62, so that the magnesium oxide powder 10 is fully filled between the tube body 2, the connecting rod 5, the positioning mechanism 6, the support frame 7 and the heating wire 9, and then the upper cover 3 is welded to the top end of the tube body 2.

[0032] Preferably, the through slots 8 are all connected to the heating wires 9 through insertion.

[0033] As can be seen from the above, by providing the through groove 8 , it is convenient for the heating wire 9 to be wound around the outer surface of the connecting rod 5 .

[0034] Embodiment 2:

[0035] refer to Figure 5 As shown, the introduction seat 62 is configured as a conical structure, and the introduction seat 62 and the connection cover 61 are both sleeved on the outer surfaces of the through groove 8 and the heating wire 9 .

[0036] As can be seen from the above, the introduction seat 62 is set to a conical structure, so as to facilitate the introduction of the magnesium oxide powder 10.

[0037] Working principle: The device is installed in the heating furnace through the mounting base 1. When in use, the heating wire 9 generates heat. Under high temperature conditions, the high temperature resistant rubber 66 will undergo thermal expansion. After the expansion, the high temperature resistant rubber 66 will squeeze the magnesium oxide powder 10, so that the magnesium oxide powder 10 fits tightly to the outer surface of the heating wire 9, thereby wrapping the magnesium oxide powder 10 around the heating wire 9. When the heating wire 9 is used for a long time, the oxide scale of the heating wire 9 will no longer fall off, thereby preventing the heating wire 9 and the tube wall of the tube body 2 from short-circuiting and igniting, and also reducing the oxidation of the heating wire 9, thereby improving safety and extending the service life of the device.

[0038] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating furnace radiant tube resistant to burning, characterized in that: include: Mounting seat (1); A tube body (2) is fixedly connected and inserted into the middle of the top of the mounting seat (1), an upper cover (3) is fixedly connected to the top of the tube body (2), and a plurality of positioning mechanisms (6) are fixedly connected to the inner wall of the tube body (2) at equal distances; The positioning mechanism (6) comprises a connection cover (61), an introduction seat (62), a mounting groove (63) and a high temperature resistant rubber (66); the introduction seat (62) is fixedly connected to the top of the connection cover (61); two support columns (65) are fixedly connected to both sides of the outer surface of the connection cover (61); the mounting groove (63) is arranged in the middle of the inner wall of the connection cover (61); the high temperature resistant rubber (66) is fixedly inserted and connected in the mounting groove (63); a plurality of through holes (64) are arranged at equal distances on the outer surface of the connection cover (61); and one end of the support column (65) away from the connection cover (61) is fixedly connected to the inner wall of the tube body (2).

2. The burn-resistant heating furnace radiant tube according to claim 1, characterized in that: A socket (4) is movably inserted and connected to the lower part of the inner wall of the tube body (2); a connecting rod (5) is fixedly connected to the middle part of the top end of the socket (4); a heating wire (9) is wound around the outer surface of the connecting rod (5); a plurality of support frames (7) are fixedly connected to the outer surface of the connecting rod (5) at equal distances; and a through groove (8) is provided at one end of the outer surface of each support frame (7).

3. The burn-resistant heating furnace radiant tube according to claim 2, characterized in that: The through grooves (8) are all connected to the electric heating wires (9) through insertion.

4. The burn-resistant heating furnace radiant tube according to claim 2, characterized in that: The tube body (2), the connecting rod (5), the positioning mechanism (6), the support frame (7) and the heating wire (9) are commonly filled with magnesium oxide powder (10).

5. The burn-resistant heating furnace radiant tube according to claim 1, characterized in that: The introduction seat (62) is configured as a conical structure, and the introduction seat (62) and the connection cover (61) are both sleeved on the outer surfaces of the through groove (8) and the heating wire (9).

Images