一种耐高温阻燃PU风管

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By using specific composite layer materials and innovative connection structures in PU ducts, the problems of deformation, aging, and flame retardancy of PU ducts under high-temperature environments have been solved, enabling rapid assembly and flexible adjustment of airflow, thereby improving service life and safety.

CN224516221UActive Publication Date: 2026-07-17YANCHENG LEHAHA PIPE IND TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: YANCHENG LEHAHA PIPE IND TECHNOLOGY CO LTD
Filing Date: 2025-08-04
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Traditional PU ducts are prone to deformation and aging in high-temperature environments, have insufficient flame retardant properties, and have cumbersome connection methods with poor stability, affecting their service life and safety.

Method used

The PU duct design features an inner composite layer of polytetrafluoroethylene (PTFE), a middle composite layer of flame-retardant polyurethane, and an outer composite layer of polyurethane elastic material. It achieves rapid assembly and airflow adjustment through structures such as positioning blocks, movable rods, springs, bolts, adjusting discs, and L-shaped rods.

Benefits of technology

It improves the high-temperature resistance and flame retardant properties of PU ducts, simplifies the connection process, enhances the ease of assembly and controllability of airflow, and strengthens sealing and safety.

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Abstract

本实用新型公开了一种耐高温阻燃PU风管，涉及PU风管技术领域；而本实用新型包括PU风管本体，PU风管本体设有两个，PU风管本体的内壁均固定安装有内复合层，PU风管本体的内部均固定安装有中复合层，PU风管本体的外表面均固定安装有外复合层，位于左侧的PU风管本体的一端固定安装有阵列分布的定位块，位于右侧的PU风管本体的外侧固定安装有阵列分布的L形块；通过将一个PU风管本体与另一个PU风管本体对接，定位块卡进卡槽中后，利用弹簧的作用拉动活动杆滑动，活动杆滑动插进定位块中使其定位，随后再转动螺栓，螺栓依靠螺纹的效果再安装到定位块之中，从而快捷的完成了PU风管本体的装配加装，结构巧妙，操作灵活便捷，值得推广。

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Claims

1. A high-temperature resistant and flame-retardant PU duct, comprising a PU duct body (1), characterized in that: Two PU duct bodies (1) are provided. An inner composite layer (11) is fixedly installed on the inner wall of each PU duct body (1). A middle composite layer (12) is fixedly installed inside each PU duct body (1). An outer composite layer (13) is fixedly installed on the outer surface of each PU duct body (1). An array of positioning blocks (14) is fixedly installed at one end of the PU duct body (1) on the left side. An array of L-shaped blocks (15) is fixedly installed on the outer side of the PU duct body (1) on the right side. A movable rod (16) is slidably installed at the top of each L-shaped block (15). One end of the movable rod (16) is... All are fixedly connected with springs (17), one end of the springs (17) is fixedly connected to the L-shaped block (15), the top of the movable rod (16) is fixedly installed with a support block (18), the top of the support block (18) is threaded with a bolt (19), one end of the PU duct body (1) on the right side is provided with an array of slots (20), one end of the positioning block (14) is slidably engaged in the inner side of the slot (20), the bottom end of the movable rod (16) is slidably inserted into the inner side of the positioning block (14), one end of the bolt (19) is threaded through the movable rod (16) and threadedly installed inside the positioning block (14).

2. A high temperature resistant, flame retardant PU ducting as claimed in claim 1, wherein, An adjusting plate (21) is movably installed at one end of the PU duct body (1) located on the right side. A connecting column (22) is fixedly connected to the top of the adjusting plate (21). One end of the connecting column (22) rotates through the PU duct body (1) and is fixedly connected to an N-shaped piece (23). An L-shaped rod (24) is rotatably sleeved on the outside of the N-shaped piece (23). An array of bayonets (25) is opened at the top of the PU duct body (1) located on the right side. One end of the L-shaped rod (24) is movably engaged inside the corresponding bayonet (25).

3. A high temperature resistant, flame retardant PU ducting as claimed in claim 1, wherein, A security strip (26) is fixedly connected to one end of the PU duct body (1) located on the left side, and the security strip (26) is movably abutted to one end of the PU duct body (1) located on the right side.

4. The high temperature resistant and flame retardant PU ducting as claimed in claim 1, wherein, A temperature sensor (27) is fixedly installed at one end of the PU duct body (1) located on the left side.

5. The high temperature resistant and flame retardant PU ducting as claimed in claim 1, wherein, Each of the bolts (19) has an adjusting ring (28) fixedly installed at its top.

6. A high temperature resistant, flame retardant PU ducting as claimed in claim 2, wherein, The outer side of the N-shaped part (23) is fixedly fitted with symmetrically distributed limiting rings (29), and one end of the limiting rings (29) is in movable contact with the L-shaped rod (24).