Lengthened three-eccentric center butterfly valve with upper valve cover
A triple-eccentric butterfly valve and elongated technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of easy distortion, easy damage and poor stability of the connecting part, so as to avoid distortion and reduce stability. Effect
Pending Publication Date: 2022-04-12
WUXI SCORE AUTOMATIC CONTROL EQUIP CO LTD
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Problems solved by technology
Among them, the extended triple eccentric butterfly valve generally includes a valve body, a disc plate installed in the valve body, a valve stem connected to the disc plate through the valve body, and an extension tube installed on the valve body. As well as the extension rod and other parts that are installed in the extension tube, the valve stem and the extension rod of the existing extended triple eccentric butterfly valve are designed in one piece, and the connecting parts are easy to twist and deform, and the stability caused by transition constraints is poor. The weight of the valve stem and the extension rod is all superimposed on the lower bearing, which is easily damaged during 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] It should be noted that if there are directional indications such as up, down, left, right, front, back, etc. in the embodiment of the present invention, the directional indications are only used to explain the position of each individual in a certain posture as shown in the attached figure. If the relative positional relationship, movement conditions, etc. between the components change, the directional indication will also change accordingly. ...
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The invention discloses a lengthened three-eccentric center butterfly valve with an upper valve deck. The lengthened three-eccentric center butterfly valve comprises a valve body, a butterfly plate installed in the valve body, a valve rod arranged in the valve body in a penetrating mode and connected with the butterfly plate, a lengthened pipe installed on the valve body and a lengthened rod arranged in the lengthened pipe in a penetrating mode. The valve rod and the extension rod are designed in a split mode, and the valve rod and the extension rod are connected with each other through a coupler. According to the invention, the extension rod and the valve rod are separately designed and are connected through the coupling to transmit torque, so that the connection part between the extension rod and the valve rod is not easy to distort and deform, and the respective weight of the extension rod and the valve rod can be dispersed to different parts, thereby avoiding the problem of stability reduction caused by pressure bearing of valve internals.
Description
technical field [0001] The invention relates to the field of valves, in particular to a triple-eccentric butterfly valve with an extended upper bonnet. Background technique [0002] Extended upper bonnet valves are widely used in instrument wells, underground mining and other working conditions. Among them, the extended triple eccentric butterfly valve generally includes a valve body, a disc plate installed in the valve body, a valve stem connected to the disc plate through the valve body, and an extension tube installed on the valve body. As well as the extension rod and other parts that are installed in the extension tube, the valve stem and the extension rod of the existing extended triple-eccentric butterfly valve are designed in one piece, and the connecting parts are easy to twist and deform, and the stability caused by transition constraints is poor. The weight of the valve stem and the extension rod is all superimposed on the lower bearing, which is easily damaged d...
Claims
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IPC IPC(8): F16K1/22F16K1/226F16K1/32F16K31/44F16D1/02
Inventor 吕徐华雷晓霞马原野吴建张世乐张勇周丽何禹珉程睿韦一心
Owner WUXI SCORE AUTOMATIC CONTROL EQUIP CO LTD