一种水机中压开关

Abstract

本实用新型提供一种水机中压开关，包括中压开关本体、主连接头和一对副连接头，主连接头包括主连接头本体和由主连接头本体相对两端端面分别水平延伸延伸的外螺纹连接部；中压开关本体上的排气管和压缩机上的管道分别插入到一对副连接头中，一对副连接头分别螺纹固定安装在主连接头的相对两端处的外螺纹连接部上，在副连接头螺纹固定安装在外螺纹连接部后，内螺纹连接部与外螺纹连接部之间的锁紧机构，锁紧机构对排气管和管道的外壁进行压紧，使得排气管和管道的外壁上的第一密封圈和第二密封圈紧密贴合在锁紧机构上，保证排气管和管道在主连接头内的安装密封性，改善管道中的气体易泄露的现象。

Claims

1. A medium-pressure switch for a water treatment plant, comprising a medium-pressure switch body, characterized in that, It also includes a main connector and a pair of auxiliary connectors. The main connector includes a main connector body and external threaded connecting parts that extend horizontally from opposite end faces of the main connector body. The main connector body and the pair of external threaded connecting parts are provided with a first through hole arranged coaxially to facilitate pipe insertion. The auxiliary connectors are provided with a second through hole. The inner wall of the second through hole is provided with an internal threaded connecting part. A locking mechanism is provided between the internal threaded connecting part and the external threaded connecting part. A first sealing ring is nested on the outer circumferential surface of the exhaust pipe on the medium-pressure switch body. A second sealing ring is nested on the outer circumferential surface of the end connected to the pipe. When the external threaded connecting part is threaded onto the internal threaded connecting part, the locking mechanism seals and locks the pipe and exhaust pipe installed in the second through hole and the first through hole.

2. A water machine pressure switch according to claim 1, wherein, The locking mechanism includes a first locking member disposed on the inner wall of the external threaded connection and a second locking member disposed in the inner cavity of the internal threaded connection. The first locking member is a first flared opening extending outward from the inner cavity of the external threaded connection with a gradually increasing outer diameter. The opening size of the first flared opening in the inner cavity of the external threaded connection near the main connector body is the same as the outer diameter of the inserted pipe. The second locking member is a second flared opening extending from the outer end of the inner cavity of the internal threaded connection towards the other end near the main connector body with a gradually decreasing outer diameter. The opening size of the second flared opening near the main connector body is the same as the outer diameter of the inserted pipe. After the external threaded connection is threadedly fixed to the internal threaded connection, the second flared opening is inserted into the inner cavity of the first flared opening, and the first flared opening applies downward pressure to the second flared opening.

3. A water pressure switch according to claim 1 or 2, wherein The main connector body and a pair of auxiliary connectors are nut-shaped structures with a hexagonal longitudinal section.

4. A water pressure switch according to claim 2, wherein The first locking member is integrally formed with the external threaded connection part, and the second locking member is integrally formed with the internal threaded connection part.

5. A water pressure switch according to claim 1, wherein A rubber sealing ring is fixedly installed on the outer end face of the secondary connector, away from the main connector body.

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