Flange structure capable of preventing resin from flowing

Abstract

The utility model discloses a flange structure for preventing resin circulation, which relates to the field of heating pipe sealing and comprises a heating pipe, a threaded flange and sealing resin, the threaded flange is sleeved on the outer wall of one end of the heating pipe, an unthreaded section of the threaded flange faces upwards, and a threaded section of the threaded flange faces downwards. The inner wall of the threaded flange seals the opening part of the heating pipe through sealing resin; a flow stopping groove is formed in the outer wall of the thread-free section and used for containing resin overflowing during sealing. The annular flow stopping groove is formed in the unthreaded section of the threaded flange, and the unthreaded section is located above the threaded section and is closer to the sealing position, so that in the sealing process, overflowing resin can enter the flow stopping groove to be accumulated, the threaded section cannot be affected, and it is ensured that the threaded section can still be used normally after sealing. The problem that in the heating pipe sealing process, resin overflows, and consequently threads are not communicated is solved.

Description

Technical Field

[0001] The utility model relates to the field of heating pipe sealing, in particular to a flange structure for preventing resin from flowing. Background Art

[0002] Conventional heating pipes usually have threaded flanges installed at the pipe openings to facilitate installation and fixation of the heating pipes. At the same time, the pipe openings of the heating pipes need to be sealed. Since there is no thread distance between the thread starting position of the existing structural flange and the pipe opening, the resin used for sealing can easily flow to the flange threads during the sealing process. Under the condition where the amount of glue flowing out is relatively high, there is still a probability that the resin will flow to the threads, resulting in thread blockage (difficulty in installing flange threads). Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a flange structure for preventing resin from flowing, thereby solving the problem of thread blockage caused by resin overflow during the sealing process of the heating tube.

[0004] The purpose of the utility model is achieved through the following technical scheme: the flange structure for preventing the resin from flowing comprises a heating tube, a threaded flange and a sealing resin, the threaded flange is sleeved on the outer wall of one end of the heating tube, the unthreaded section of the threaded flange faces upward and the threaded section faces downward, the inner wall of the threaded flange seals the heating tube mouth through the sealing resin; a stop groove is opened on the outer wall of the unthreaded section to accommodate the resin overflowing during sealing.

[0005] As a further technical solution, the stop groove is an annular groove and is located in the middle of the non-threaded section.

[0006] As a further technical solution, the width of the flow-stop groove is 1 mm.

[0007] As a further technical solution, chamfers are provided at both upper and lower ends of the threaded section.

[0008] As a further technical solution, a flange is provided at the lower part of the threaded flange, and the inner wall at the flange is welded and fixed to the heating tube.

[0009] The beneficial effects of the utility model are:

[0010] 1. Open an annular stop groove on the non-threaded section with threaded flange. Since the non-threaded section is located above the threaded section and closer to the sealing, the overflowed resin will enter the stop groove and accumulate during the sealing process, which will not affect the threaded section, ensuring that the threaded section can still be used normally after sealing;

[0011] 2. The threaded flange is fixed to the heating tube through flange welding, and the connection is reliable and not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Explanation of the reference numerals: heating tube 1, threaded flange 2, threaded section 21, non-threaded section 22, stop groove 221, flange 23, sealing resin 3. DETAILED DESCRIPTION

[0014] The utility model will be described in detail below with reference to the accompanying drawings:

[0015] Example: As shown in the attached Figure 1 As shown, the flange structure for preventing resin from flowing includes a heating tube 1, a threaded flange 2, a threaded section 21, a non-threaded section 22, a stop groove 221, a flange 23 and a sealing resin 3.

[0016] A threaded flange 2 is sleeved on the outer wall of the upper end of the heating tube 1, and a flange 23 is arranged at the lower part of the threaded flange 2. The inner wall of the flange 23 is fixed to the outer wall of the heating tube 1 by welding. After welding, the non-threaded section 22 of the threaded flange 2 is facing upward and the threaded section 21 is facing downward. An annular stop groove 221 is opened on the outer wall of the non-threaded section 22 (ensuring that the stop groove 221 is located above the threaded section 21). Preferably, the axial length of the non-threaded section 22 is 5 mm, and the width of the stop groove 221 is 1 mm, which is located exactly in the middle of the non-threaded section 22.

[0017] During processing, the inner wall of the threaded flange 2 seals the mouth of the heating tube 1 through the sealing resin 3. The overflowing resin enters the stop groove 221 during sealing to prevent the resin from flowing to the threaded section 21 and causing the thread to be blocked.

[0018] Preferably, chamfers are provided at both upper and lower ends of the threaded segment 21 .

[0019] The working process of the utility model is as follows: before sealing, the threaded flange 2 is welded and fixed to the end of the heating tube 1, so that the unthreaded section 22 of the threaded flange 2 faces upward and the threaded section 21 faces downward, that is, it is ensured that the stop groove 221 is located above the threaded section 21. When sealing begins, the sealing resin 3 is injected into the inner wall of the threaded flange 2 and the mouth of the heating tube 1. Since the outflow of the resin is usually large (excessive), the overflowed resin flows along the unthreaded section 22 into the stop groove 221 (annular groove) for accumulation, and will not affect the threaded end 21.

[0020] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A flange structure for preventing resin from flowing, characterized in that: The invention comprises a heating tube (1), a threaded flange (2) and a sealing resin (3); the threaded flange (2) is sleeved on the outer wall of one end of the heating tube (1), so that the non-threaded section (22) of the threaded flange (2) faces upward and the threaded section (21) faces downward; the inner wall of the threaded flange (2) seals the mouth of the heating tube (1) through the sealing resin (3); and a stop groove (221) is provided on the outer wall of the non-threaded section (22) for accommodating resin overflowing during sealing.

2. The flange structure for preventing resin flow according to claim 1, characterized in that: The stop groove (221) is an annular groove and is located in the middle of the non-threaded section (22).

3. The flange structure for preventing resin flow according to claim 1, characterized in that: The width of the flow-stop groove (221) is 1 mm.

4. The flange structure for preventing resin flow according to claim 1, characterized in that: Chamfers are provided at both the upper and lower ends of the threaded section (21).

5. The flange structure for preventing resin flow according to claim 1, characterized in that: A flange (23) is provided at the lower part of the threaded flange (2), and the inner wall of the flange (23) is welded and fixed to the heating pipe (1).

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