一种止回阀

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By introducing a double-ring coupling and an L-shaped sealing rubber gasket into the check valve, the problem of inconsistent blade opening was solved, and synchronous action and sealing effect were improved.

CN224516045UActive Publication Date: 2026-07-17NANJING CHUANGYUAN INTEGRATION AIR CONDITIONING

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: NANJING CHUANGYUAN INTEGRATION AIR CONDITIONING
Filing Date: 2025-07-29
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

The blades of the aluminum alloy check valve are subjected to uneven force under the action of airflow organization, resulting in inconsistent opening of each blade.

Method used

The blades and rotating column are connected by a double-ring coupling. The blades open and close synchronously through synchronous rotation. The L-shaped sealing rubber gasket is used to achieve sealing, and the guide wheel is used to stabilize the movement of the blades.

Benefits of technology

This achieves synchronized and consistent blade movement, avoiding uneven stress caused by individual blade movement and ensuring a good sealing effect.

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Abstract

本实用新型公开了一种止回阀，包括框体，所述框体中固定设有分隔板，所述所述框体内转动连接叶片，所述叶片一侧固定连接中空套管，所述中空套管一侧开设贯穿缺口，所述贯穿缺口内固定连接双环联轴件，所述双环联轴件一端固定连接转动柱，另一端固定连接圆杆固定套，所述转动柱固定在贯穿缺口内部，所述转动柱转动连接框体，所述圆杆固定套固定连接圆杆，所述中空套管内，位于贯穿缺口中心位置处固定设有衔接杆，所述衔接杆固定连接支撑板，所述支撑板上开设腰型孔，所述腰型孔通过螺栓固定连接配重块；通过双环联轴件可以将叶片同步开启和闭合，避免叶片单独运动，导致叶片开启不一致。

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Claims

1. A check valve comprising a frame (1), characterized in that: A partition plate (2) is fixedly provided in the frame (1). A blade (3) is rotatably connected inside the frame (1). A hollow sleeve (4) is fixedly connected to one side of the blade (3). A through-hole is opened on one side of the hollow sleeve (4). A double ring coupling (5) is fixedly connected inside the through-hole. A rotating column is fixedly connected to one end of the double ring coupling (5), and a round rod fixing sleeve (6) is fixedly connected to the other end. The rotating column is fixed inside the through-hole. The rotating column is rotatably connected to the frame (1). The round rod fixing sleeve (6) is fixedly connected to the round rod (7). A connecting rod is fixedly provided at the center of the through-hole inside the hollow sleeve (4). The connecting rod is fixedly connected to a support plate (8). A waist-shaped hole is opened on the support plate (8). A counterweight (9) is fixedly connected to the waist-shaped hole by bolts.

2. A check valve according to claim 1, wherein: The frame (1) is provided with guide wheels (10) on its side.

3. A check valve according to claim 1, wherein: An L-shaped sealing rubber gasket is provided at the connection between the blade (3) and the hollow sleeve (4).