截止阀

By installing an extension tube on the valve pipe, the problem of inconvenient high-frequency welding of the gate valve is solved, achieving efficient welding and stable connection, and improving assembly efficiency and welding effect.

CN224516079UActive Publication Date: 2026-07-17ZHEJIANG DUNAN HETIAN METAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG DUNAN HETIAN METAL CO LTD
Filing Date
2025-06-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing gate valve body and connecting pipe are difficult to weld at high frequency, and multiple high-frequency coils may interfere with each other, affecting assembly efficiency.

Method used

An extension tube is installed on the valve tube. The extension tube is integrally formed with the valve tube, providing space for the installation of the electromagnetic coil. This ensures that the electromagnetic coil for high-frequency welding can be directly sleeved on the extension tube and connected to the connecting pipe through the extension tube. The design is vertical and symmetrical to avoid coil interference and achieve efficient welding.

Benefits of technology

This improved the assembly efficiency of the gate valve, ensured the welding effect and connection strength, and reduced manufacturing costs.

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Abstract

本实用新型提供了一种截止阀，截止阀包括：阀管，阀管具有阀腔；两个延长管，沿阀管的径向，延长管自阀管的外周壁向外延伸形成，延长管的一端与阀管连接或一体成型，延长管的另一端用于连接接管，接管通过延长管与阀腔连通，接管与延长管高频焊接连接，延长管远离阀管的一端到阀管侧壁的最小距离为H，H≥5mm。应用本申请的技术方案，能够解决现有技术中的截止阀的阀体与接管焊接不便的问题。
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Claims

1. A stop valve characterized by comprising: The shut-off valve includes: A valve tube (100) having a valve cavity (101); Two extension tubes (200) are formed along the radial direction of the valve tube (100). The extension tubes (200) extend outward from the outer peripheral wall of the valve tube (100). One end of the extension tube (200) is connected to the valve tube (100) or integrally formed. The other end of the extension tube (200) is used to connect to the connecting pipe (01). The connecting pipe (01) is connected to the valve cavity (101) through the extension tube (200). The connecting pipe (01) and the extension tube (200) are connected by high-frequency welding. The minimum distance from the end of the extension tube (200) away from the valve tube (100) to the side wall of the valve tube (100) is H, where H ≥ 5 mm.

2. The stop valve according to claim 1, characterized by The axis of the extension tube (200) is perpendicular to the axis of the valve tube (100), and the two extension tubes (200) are arranged on both sides of the valve tube (100) relative to the axis of the valve tube (100).

3. The shut-off valve according to claim 1, characterized in that The extension tube (200) has a plug section (210) and an extension section (220) connected to each other. The connector (01) is partially inserted into the inside of the plug section (210). The inner diameter of the plug section (210) is larger than the inner diameter of the extension section (220). A stepped surface (230) is formed between the plug section (210) and the extension section (220). The port of the connector (01) abuts against the stepped surface (230).

4. The shut-off valve according to claim 3, characterized in that The minimum wall thickness at the plug section (210) is A, where A ≥ 1 mm.

5. The shut-off valve according to claim 1, characterized in that The extension tube (200) has a weld groove (240) at the end opposite to the valve tube (100).

6. The shut-off valve according to claim 5, characterized in that The extension tube (200) has a chamfered section (250) on the inner periphery of the end opposite to the valve tube (100). The inner diameter of the chamfered section (250) gradually increases along the direction from the valve tube (100) to the extension tube (200), and the chamfered section (250) forms the weld groove (240).

7. The shut-off valve according to claim 6, characterized in that The chamfered section (250) has a tapered structure, and the tapered angle α of the chamfered section (250) is between 90° and 150°.

8. The shut-off valve according to claim 3, characterized in that At least part of the outer diameter of the plug segment (210) is larger than the outer diameter of the extension segment (220).

9. The shut-off valve according to claim 8, characterized in that The valve tube (100) and the extension tube (200) are integrally cast.

10. The shut-off valve according to claim 1, characterized in that The shut-off valve is made of aluminum alloy.