Three way ball valve

Abstract

The invention provides a three-way ball valve. The three-way ball valve comprises a valve body and a valve rod, wherein the valve body is horizontally provided with a first flowing-out passage, a second flowing-out passage and a flowing-in passage, the first flowing-out passage, the second flowing-out passage and the flowing-in passage meet at a valve cavity, the flowing-in passage and the first flowing-out passage are in alignment and perpendicular to the second flowing-out passage, a valve ball is arranged in the valve cavity, an inlet sealing seat and an outlet sealing seat located at the side of the flowing-in passage and the side of the first flowing-out passage respectively are arranged between the valve ball and the valve body, the inlet sealing seat forms a sealing pair along with the valve ball, the outlet sealing seat forms a sealing pair along with the valve ball, the valve body located above the valve cavity is provided with a vertically extending valve rod installation hole, the valve rod penetrates through the valve rod installation hole to be connected with the valve body in a rotary sealing mode, the lower end of the valve rod is connected with the valve ball, the valve ball is provided with a horizontally extending central overflowing hole and an arc overflowing groove, the axis of the central overflowing hole passes through the center of the valve ball, the arc overflowing groove is formed in the middle lower portion of the surface of the valve ball and extends in a vertical plane, and a longitudinal symmetry plane of the arc overflowing groove passes through the center of the valve ball. The flowing amount of the three-way ball valve is not affected when two passages are opened and one passage is closed, and the sealing performance is good.

Description

technical field [0001] The invention relates to a three-way ball valve, which is especially suitable for switching control of on-off of indoor heating pipelines. Background technique [0002] The existing ordinary three-way ball valve generally has a check core in the valve ball, and the structure is slightly complicated, which makes the processing and assembly costs higher, and the flow rate varies greatly when the valve works at different positions. Contents of the invention [0003] In order to solve the above problems, the present invention provides a three-way ball valve, which adopts a special structure of the valve ball and does not have a check core, so as to realize two-way opening and one-way closing without affecting the flow rate. [0004] The technical solutions provided by the present invention include: a three-way ball valve, including a valve body and a valve stem, the valve body is horizontally provided with a first outflow channel, a second outflow channe...

AI Technical Summary

Problems solved by technology

[0002] The existing ordinary three-way ball valve generally has a check core in the valve ball, and the structure is slightly complicated, which makes the processing and assembly costs higher, and the flow rate of the valve works in different positions.

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