Limiting ring structure of triple-eccentric sealing butterfly valve
A limit ring, triple eccentric technology, applied in the direction of lift valves, valve devices, engine components, etc., can solve problems such as unfavorable use, easy water ingress of bearings, shortened service life of triple eccentric sealing butterfly valves, etc.
Active Publication Date: 2020-01-21
TONGLING XINCHUANG FLUID TECH
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Problems solved by technology
[0003] The existing triple eccentric sealing butterfly valve still has shortcomings, such as the existing triple eccentric sealing butterfly valve bearings are prone to water or debris, etc., resulting in a shortened service life of the triple eccentric sealing butterfly valve, which is not conducive to use
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] The present invention provides such Figure 1-5 The limit ring structure of a triple eccentric sealing butterfly valve shown includes a limit block 3, and a first ventilation hole 12 is opened on one side of the limit block 3, and a metal anti-corrosion hole 12 is fixedly connected inside the first ventilation hole 12. Dust net 4, the top side of the limiting block 3 is provided with a second ventilation hole 5, the second ventilation hole 5 is located ...
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The invention discloses a limiting ring structure of a triple-eccentric sealing butterfly valve, and particularly relates to the technical field of sealing butterfly valves. The limiting ring structure comprises a limiting block. A first vent hole is formed in one side of the limiting block. A metal dustproof net is fixedly connected into the first vent hole. A second vent hole is formed in one side of the top of the limiting block. The second vent hole is formed in the top of the metal dustproof net. The second vent hole communicates with the first vent hole. A first seal ring is fixedly connected with the outer side of the limiting block. An internal thread is machined in the inner wall of the limiting block. A valve rod rotates to drive the limiting block to move up, when the limiting block is moved into a valve body, due to the first seal ring, impurities in flowing water cannot enter a bearing, the aim of preventing the bearing from getting stuck by the impurities is realized, during flow intercepting, the valve rod turns, the metal dustproof net on one side of the limiting block is exposed, and a small amount of liquid flowing into the bearing flows out.
Description
technical field [0001] The invention relates to the technical field of sealed butterfly valves, and more specifically, the utility model relates to a limit ring structure of a triple-eccentric sealed butterfly valve. Background technique [0002] Butterfly valve is one of the fastest-growing valve varieties in the past ten years due to its good flow regulation function and closing and sealing characteristics. , Large caliber, high sealing, long life, excellent regulation characteristics, and multi-function development of a valve. Its reliability and other performance indicators have reached a high level. [0003] The existing triple eccentric sealing butterfly valve still has disadvantages, for example, the bearing of the existing triple eccentric sealing butterfly valve is prone to water or sundries, etc., resulting in a shortened service life of the triple eccentric sealing butterfly valve, which is not conducive to use. [0004] Therefore, it is necessary to invent a li...
Claims
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IPC IPC(8): F16K1/228
CPCF16K1/2268F16K1/228
Inventor 吴成祝姚惟秀
Owner TONGLING XINCHUANG FLUID TECH