Sealing device between online annealing coils

Abstract

The utility model provides a sealing device between on-line annealing coils, which comprises a sealing main body, a sealing ring and a sealing ring, the pneumatic quick connector is arranged on the sealing main body and is used for filling nitrogen into the sealing main body; the guide wheel group is arranged in the sealing main body and is communicated with the pneumatic quick connector; the mica tubes are arranged on two sides of the sealing main body and are communicated with the guide wheel group; the graphite sealing assembly is arranged in the sealing main body and is positioned between the mica tube and the guide wheel group; the front end sealing cover is arranged on the sealing main body and is used for sealing one end of the mica tube in the sealing main body; and the side sealing pressing plate is arranged on the sealing main body and is used for sealing the guide wheel group in the sealing main body. Due to the combination of the side face sealing pressing plate and the rubber pad, the sealing effect is improved, and the device is convenient to disassemble, assemble and maintain. And due to the use of the pneumatic quick connector, the sealing device can be quickly filled with nitrogen, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal heat treatment technical field, in particular to a kind of sealing device between online annealing coil. BACKGROUND

[0002] In the induction heating process of metal pipe, especially copper pipe, to prevent its oxidation, copper pipe needs to be placed in a protective gas environment. Currently, the heating zone of the online annealing equipment is set in a large box, in order to ensure that the copper pipe is not oxidized during heating, nitrogen needs to be filled into the entire box, resulting in a large amount of nitrogen consumption. When heating, the oil film on the surface of the copper pipe produces oil fume due to the increase in temperature. These oil fumes not only pollute the outer wall of the copper pipe, but also adhere to the heating coil and the support seat, which may cause a short circuit in the circuit, thereby burning the coil, increasing maintenance costs and reducing the quality of the copper pipe.

[0003] To reduce the use of protective gas nitrogen and reduce the adverse effects of oil fume in the box on the copper pipe and coil, the protective gas is now directly filled into the mica tube, and oil fume is simultaneously extracted from the mica tube. In addition, under the premise of ensuring good sealing effect, a sealing structure that is easy to disassemble, maintain and repair is also needed. In summary, there is an urgent need for a mica tube sealing device with a reasonable design. SUMMARY

[0004] The utility model aims at least to solve the technical problem of high maintenance cost in the prior art, and particularly innovatively provides a sealing device between online annealing coils.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a sealing device between online annealing coils, which comprises:

[0006] The sealing body is a rectangular parallelepiped structure;

[0007] The pneumatic quick connector is arranged on the sealing body and is used to inject nitrogen into the sealing body;

[0008] The guide wheel set is arranged in the sealing body and is connected to the pneumatic quick connector;

[0009] The mica tube is arranged on both sides of the sealing body and is connected to the guide wheel set;

[0010] The graphite sealing assembly is arranged in the sealing body and is located between the mica tube and the guide wheel set;

[0011] The front end sealing cover is arranged on the sealing body and is used to seal one end of the mica tube in the sealing body;

[0012] A side sealing pressing plate is arranged on the sealing main body and used for sealing the guide wheel set in the sealing main body.

[0013] As an optional embodiment of the utility model, optionally, the guide wheel set comprises two graphite guide wheels, and the two graphite guide wheels form a guide wheel channel through mutual cooperation and are used for guiding the annealing coil to pass through the sealing main body.

[0014] As an optional embodiment of the utility model, optionally, the graphite guide wheel is fixed in the sealing main body through a guide wheel fixing bolt.

[0015] As an optional embodiment of the utility model, optionally, a graphite guide wheel bushing is arranged in the graphite guide wheel and is used for preventing the guide wheel fixing bolt from directly contacting the inner wall of the graphite guide wheel.

[0016] As an optional embodiment of the utility model, optionally, the graphite sealing assembly comprises:

[0017] A graphite sleeve is arranged on the sealing main body, and the mica tube is arranged in the graphite sleeve;

[0018] A concave graphite is arranged between the graphite sleeve and the sealing main body;

[0019] A gasket is arranged in the graphite sleeve.

[0020] As an optional embodiment of the utility model, optionally, a chamfer is arranged outside the graphite sleeve.

[0021] As an optional embodiment of the utility model, optionally, a rubber pad is further arranged between the side sealing pressing plate and the sealing main body.

[0022] The beneficial effects of this invention are as follows: the sealing device effectively reduces nitrogen consumption and minimizes oil fume contamination of the copper tube and coil. Due to its compact design, the protective gas can be more concentrated on the copper tube surface, thus improving its efficiency. Furthermore, the use of graphite guide wheels not only ensures smooth passage of the annealed coil but also effectively prevents damage to the sealing device from the high-temperature annealing coil due to their excellent high-temperature resistance. The graphite guide wheel bushing further ensures good isolation between the guide wheel and the annealed coil, avoiding wear and damage that may result from direct contact. The use of graphite sealing components, combined with the design of concave graphite and gaskets, further enhances the sealing effect and ensures the sealing performance of the protective gas. The combination of the side sealing plate and rubber gasket not only improves the sealing effect but also facilitates disassembly and maintenance. The use of pneumatic quick-connect couplings allows for rapid nitrogen filling of the sealing device, improving working efficiency. In summary, the sealing device between online annealed coils of this invention has significant beneficial effects in reducing maintenance costs, improving production efficiency, and ensuring product quality.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the sealing device between the online annealing coils of this utility model.

[0026] Figure 2 This is a cross-sectional view of the sealing device between the online annealing coils of this utility model.

[0027] Figure 3 This is a schematic diagram of the graphite guide wheel of this utility model.

[0028] Figure 4 This is a cross-sectional view of the graphite guide wheel of this utility model.

[0029] In the diagram: 1. Sealing body; 2. Pneumatic quick connector; 3. Side sealing plate; 4. Mica tube; 5. Front sealing cover; 6. Graphite sleeve; 7. Rubber gasket; 8. Graphite guide wheel; 9. Guide wheel fixing bolt; 10. Concave graphite; 11. Washer; 12. Graphite guide wheel bushing. Detailed Implementation

[0030] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0031] As shown in Figure 1 , a kind of sealing device between online annealing coil, the device includes:

[0032] Sealing body 1, for cuboid structure;

[0033] Pneumatic quick connector 2, is set to the sealing body 1, for nitrogen is rushed into the sealing body 1;In the embodiment, pneumatic quick connector 2 is fixed in the top of sealing body 1 by screwing mode.

[0034] As shown in Figure 1 And 2 , guide wheel group, is set to the sealing body 1, and with the pneumatic quick connector 2 is connected;Guide wheel group includes two graphite guide wheels 8, and these two graphite guide wheels 8 form a guide wheel channel by mutual cooperation, for guiding annealing coil to pass through sealing body 1.Graphite guide wheel 8 is fixed in sealing body 1 by guide wheel fixing bolt 9.For further protection graphite guide wheel 8, graphite guide wheel 8 is provided with graphite guide wheel bushing 12, and graphite guide wheel bushing 12 is used to prevent the direct contact of graphite guide wheel 8 and high-temperature annealing coil.

[0035] Mica tube 4, is set to the sealing body 1 both sides, and with the guide wheel group is connected;As shown in Figure 1 , the both sides of sealing body 1 are equipped with mica tube 4, and the both ends of mica tube 4 are connected with guide wheel group and front end sealing cover 5 respectively, ensure the airtightness of the inside of sealing body 1.Mica tube 4 has good high-temperature resistance and insulation performance, can withstand the high temperature generated during annealing, while preventing current passing, ensure the safety of operation.

[0036] Graphite sealing assembly, is set to the sealing body 1, and is located between the mica tube 4 and the guide wheel group;Graphite sealing assembly includes graphite sleeve 6, concave graphite 10 and gasket 11, and graphite sleeve 6 is set to sealing body 1, and its inside contains concave graphite 10 and gasket 11.Graphite sleeve 6 is designed with chamfer on the outside, to enhance the connection strength with sealing body 1.Concave graphite 10 is located between graphite sleeve 6 and sealing body 1, and its concave surface faces sealing body 1, and is perfectly fitted with graphite sleeve 6, to provide better sealing effect.Gasket 11 is located inside graphite sleeve 6, for further ensuring sealing performance.

[0037] Front end sealing cover 5, set up on the sealing main body 1, for sealing one end of the mica tube 4 in the sealing main body 1, as shown in the figure, Figure 1 The front end sealing cover 5 is made of high-temperature-resistant material to withstand the high-temperature environment generated during annealing.

[0038] Side sealing plate 3, set up on the sealing main body 1, for sealing the guide wheel group in the sealing main body 1. The front end sealing cover 5 and the side sealing plate 3 are installed on the sealing main body 1 by screws, and the side sealing plate 3 is installed on the side of the sealing main body 1. By installing the side sealing plate 3, the two graphite guide wheels 8 can be effectively sealed in the sealing main body 1.

[0039] It should be noted that the sealing main body 1 is provided with four threaded holes at the bottom for convenient disassembly and assembly of the sealing main body and its base; the pneumatic quick connector 2 is made of stainless steel material, and the connecting part is a threaded structure, which is convenient for connection with the sealing main body 1 and has high-temperature resistance; the concave graphite 10 is directly placed in the corresponding position of the sealing main body, and the gasket 11 is placed inside the graphite sleeve 6. The graphite sleeve 6 with the gasket installed is sleeved on one end of the mica tube 4, and the convex end of the graphite sleeve 6 is directly slid into the groove of the concave graphite 10; the gasket 11 has a certain elasticity due to the use of wool felt gasket, which tightly presses the graphite sleeve 6 against the concave graphite 10, achieving sealing effect; the side sealing plate 3 is connected by bolts, which is convenient for disassembly and assembly of the single mica tube 4 and the heating coil, and can also realize secondary sealing of the concave-convex graphite, thereby enhancing the sealing effect; two graphite guide wheels 8 are installed in the middle of the sealing main body 1, which can prevent the metal pipe from being scratched by the sealing main body 1 and affecting the quality of the metal pipe; the graphite guide wheel 8 has a graphite guide wheel bushing 12 between the graphite guide wheel 8 and the guide wheel fixing bolt 9, which can reduce the wear of the graphite guide wheel 8 and the guide wheel fixing bolt 9, thereby reducing the replacement frequency of the graphite guide wheel 8 and further reducing the maintenance cost.

[0040] As an optional embodiment of the utility model, the guide wheel group includes two graphite guide wheels 8, and the two graphite guide wheels 8 form a guide wheel channel by mutual cooperation, which is used for guiding the annealing coil to pass through the sealing main body 1.

[0041] As shown in the figure, Figure 2 , 3As shown in Figs. 4, two graphite guide wheels 8 are installed in the sealing body 1 in an up-down manner, and a guide wheel channel is formed between the two graphite guide wheels 8, through which the annealing coil can be guided to pass through the sealing body 1. The surface of the graphite guide wheel 8 is treated to have good high-temperature resistance and self-lubricating performance, which can effectively reduce the friction of the annealing coil when passing through, thereby reducing the damage to the annealing coil. In addition, the structure design of the graphite guide wheel 8 enables it to maintain good mechanical strength and stability in a high-temperature environment, ensuring long-term stable operation of the device.

[0042] As an optional embodiment of the utility model, the graphite guide wheel 8 is fixed in the sealing body 1 through a guide wheel fixing bolt 9.

[0043] As an optional embodiment of the utility model, a graphite guide wheel bushing 12 is arranged in the graphite guide wheel 8, which is used to prevent the guide wheel fixing bolt 9 from directly contacting the inner wall of the graphite guide wheel 8. The rotation and friction of the graphite guide wheel 8 make the central hole of the graphite guide wheel larger, resulting in more frequent replacement of the graphite guide wheel 8.

[0044] As an optional embodiment of the utility model, the graphite sealing assembly comprises:

[0045] A graphite sleeve 6 is arranged on the sealing body 1, and the mica tube 4 is arranged in the graphite sleeve 6; as shown in Figs. Figure 1 and 2 The graphite sleeve 6 is a cylindrical structure, the mica tube 4 is arranged in the graphite sleeve 6, and the inner diameter of the graphite sleeve 6 is slightly larger than the outer diameter of the mica tube 4, so as to ensure that there is a proper gap between the two, facilitating installation and disassembly. The outer diameter of the graphite sleeve 6 matches the inner diameter of the sealing body 1, ensuring good sealing effect. The material of the graphite sleeve 6 has excellent high-temperature resistance and can withstand the high-temperature environment generated during the annealing process.

[0046] A concave graphite 10 is arranged between the graphite sleeve 6 and the sealing body 1; as shown in Figs. Figure 2 The outer diameter of the concave graphite 10 is equal to the outer diameter of the graphite sleeve 6, the graphite sleeve 6 is arranged in the concave graphite 10, the concave surface of the concave graphite 10 faces the outside of the sealing body 1 and is tightly attached to the graphite sleeve 6, forming a good sealing interface. The material of the concave graphite 10 also has high-temperature resistance and can adapt to the thermal expansion that may occur during the annealing process, maintaining the stability of the sealing effect. The concave design of the concave graphite 10 helps to guide the smooth passage of the annealing coil, while reducing the friction damage to the coil.

[0047] The gasket 11 is arranged in the graphite sleeve 6; the mica tube 4 is arranged in the concave graphite 10 through the gasket 11, the gasket 11 is arranged in the graphite sleeve 6 and is close to the inner side of the concave graphite 10, thereby ensuring the sealing between the mica tube 4 and the concave graphite 10. The gasket 11 is made of high-temperature-resistant material, can withstand the high temperature generated in the annealing process, and still maintains the elasticity to ensure the stable sealing effect in the long-term use.

[0048] As an optional embodiment of the utility model, the graphite sleeve 6 is externally provided with a chamfer. The chamfer arranged on the graphite sleeve 6 can improve the connecting strength between the graphite sleeve 6 and the sealing main body 1, and prevent stress concentration caused by thermal expansion in the high-temperature environment. The design of the chamfer enhances the stability of the structure.

[0049] As an optional embodiment of the utility model, the rubber pad 7 is arranged between the side sealing pressing plate 3 and the sealing main body 1. Figure 1 As shown in the figure, the rubber pad 7 arranged between the side sealing pressing plate 3 and the sealing main body 1 can improve the sealing performance of the sealing device between the online annealing coils. The rubber pad 7 has good high-temperature resistance and pressure resistance, can effectively absorb the small gap between the sealing main body 1 and the side sealing pressing plate 3, and further improve the sealing effect. In addition, the elastic property of the rubber pad 7 can also compensate for the thermal expansion difference caused by temperature change to a certain extent, thereby ensuring the stability of the sealing device in the long-term operation.

[0050] As an optional embodiment of the utility model, the rubber pad 7 is an asbestos rubber pad.

[0051] As an optional embodiment of the utility model, the graphite guide wheel bushing 12 is made of diamond material.

[0052] As an optional embodiment of the utility model, the pneumatic quick connector 2 is made of stainless steel material.

[0053] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and the equivalents thereof.

Claims

1. A seal between on-line annealing coils, characterized by The device comprises: a sealing body (1) in a cuboid structure; a pneumatic quick connector (2) arranged on the sealing body (1) and used for injecting nitrogen into the sealing body (1); a guide wheel set arranged in the sealing body (1) and connected with the pneumatic quick connector (2); mica tubes (4) arranged on both sides of the sealing body (1) and connected with the guide wheel set; a graphite sealing assembly arranged in the sealing body (1) and located between the mica tubes (4) and the guide wheel set; a front end sealing cover (5) arranged on the sealing body (1) and used for sealing one end of the mica tube (4) in the sealing body (1); a side sealing pressing plate (3) arranged on the sealing body (1) and used for sealing the guide wheel set in the sealing body (1). The guide wheel set comprises two graphite guide wheels (8), and the two graphite guide wheels (8) form a guide wheel channel through mutual cooperation, which is used for guiding the annealing coil to pass through the sealing body (1).

2. A seal between coils in an in-line annealing line as claimed in claim 1, characterized in that The graphite guide wheels (8) are fixed in the sealing body (1) through guide wheel fixing bolts (9).

3. A seal between coils in an in-line annealing line as claimed in claim 1, characterized in that The graphite guide wheels (8) are provided with graphite guide wheel bushings (12) inside, and the graphite guide wheel bushings (12) are used for preventing the graphite guide wheels (8) from directly contacting the high-temperature annealing coil.

4. A seal between coils in an in-line annealing line as claimed in claim 1, characterized in that The graphite sealing assembly comprises: a graphite sleeve (6) arranged on the sealing body (1), and the mica tube (4) is arranged in the graphite sleeve (6); a concave graphite (10) arranged between the graphite sleeve (6) and the sealing body (1); a gasket (11) arranged in the graphite sleeve (6).

5. An in-line annealing coil-to-coil seal as defined in claim 4 wherein, The graphite sleeve (6) is provided with a chamfer outside.

6. A seal between coils in an in-line annealing line as claimed in claim 1, characterized in that The side sealing pressing plate (3) and the sealing body (1) are further provided with a rubber pad (7).

7. An in-line annealing intercoil seal as defined in claim 6 wherein, The rubber pad (7) is an asbestos rubber pad.

8. A seal between coils in an in-line annealing line as claimed in claim 3, characterized in that The graphite guide wheel bushing (12) is made of diamond material.

9. A seal between coils in an in-line annealing line as claimed in claim 1, characterized in that The pneumatic quick connector (2) is made of stainless steel material.

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