Floating valve seat type ball valve driven by cam
A technology of floating valve seat and cam, which is applied to the parts in contact between the valve element and the valve seat, valve details, valve device, etc., can solve the problems of ball corrosion, ball and valve seat sticking to each other, and increased ball wear, etc. Achieve good sealing, reduce wear and prevent corrosion
Active Publication Date: 2022-06-17
SHANDONG UNIV
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Problems solved by technology
[0004]For example, the application of electric ball valves in heating pipelines, due to the working characteristics of heating pipelines, the switching cycle of the ball valves on the pipelines is extremely long, which is easy to cause the ball and the valve seat to stick to each other In this case, it not only increases the wear of the ball, but also causes the torque to increase, and the electric ball valve in the heating pipe is mostly powered by batteries, which causes the electric ball valve to consume more power and the service life of the battery is short;
[0005]In addition, the ball valve is used for a long time, the impurities in the medium in the heating pipe will corrode the ball, or the impurities in the medium will enter the gap between the ball and the valve seat The friction between the ball and the valve seat is increased, causing the wear of the ball
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Embodiment 1
[0041] In an exemplary embodiment of the present invention, reference is made to Figure 1-Figure 10 As shown, a cam-driven floating seat type ball valve includes a ball body 9 arranged inside the valve body 10 and matched with the valve body 10 . The valve seat 8 is arranged on the left and right sides of the direction, and the side of the valve seat 8 away from the ball 9 is fixedly connected to the floating valve seat support 7 .
[0042] The top of the sphere 9 is connected to the bottom end of the upper stem 1, and the bottom of the sphere 9 is connected to the top of the lower stem 2. Stainless steel metal gaskets are used between the sphere 9 and the upper stem 1 and between the sphere 9 and the lower stem 2. In addition, the upper cam 3 is fixedly sleeved with the bottom end of the upper valve rod 1, and the bottom end of the upper valve rod 1 and the top end of the lower valve rod 2 are fixedly connected through the valve rod connecting shaft 6 using a spline without ...
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The invention discloses a floating valve seat type ball valve driven by a cam, solves the problems that in the prior art, a ball body and a valve seat adhere to each other, impurities in a medium in a heating pipeline corrode the ball body, or the friction between the ball body and the valve seat is increased by the impurities, and has the beneficial effect of eliminating the friction between the ball body and the valve seat. According to the specific scheme, the cam-driven floating valve seat type ball valve comprises a ball body arranged in a valve body, valve seats are arranged on the two sides of the ball body in the axial direction of the valve body, floating valve seat supporting pieces are fixed to the sides, away from the ball body, of the valve seats, the top of the ball body is in clearance connection with the end of an upper valve rod, and the end of the upper valve rod is further fixedly connected with an upper cam in a sleeved mode. The upper cam and the lower cam make contact with the upper end and the lower end of the floating valve seat supporting piece respectively, one end of the valve rod connecting shaft is fixedly connected with the upper valve rod, and the other end of the valve rod connecting shaft is fixedly connected with the lower valve rod.
Description
technical field [0001] The invention relates to the technical field of valves in fluid pipelines, in particular to a cam-driven floating valve seat type ball valve. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Electric ball valve is an important actuator in industrial automation control system. Electric ball valve is not only an excellent product that can meet the requirements of throttling, cut-off, cut-off, on-off, flow diversion, etc., but also the first choice in flow regulation system. It has the characteristics of pressure resistance, temperature resistance, corrosion resistance, small flow resistance, long service life and wide application range. Due to the above advantages, electric ball valves are widely used in heating pipelines, water pipelines and natural gas pipelines. Because the ball of the ball valve rotates frequently...
Claims
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IPC IPC(8): F16K5/06F16K51/00F16K31/02F16K5/08F16K25/04
CPCF16K5/0668F16K51/00F16K31/02F16K5/08F16K25/04
Inventor 王侃王金来刘勇
Owner SHANDONG UNIV