Low-operating torque and low-leakage floating ball valve
A floating ball valve, low-leakage technology, applied in the direction of valve details, valve devices, engine components, etc., can solve the problems that the operating torque and valve sealing are difficult to achieve balance, cannot withstand the switch, easy to leak, etc., to achieve novel structural design, Long service life and good stability
Inactive Publication Date: 2012-08-01
江苏泰伯铸造有限公司
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Problems solved by technology
Between the valve body and the bonnet, graphite or PTFE gaskets are generally used to seal together, and between the valve body and the valve stem are generally sealed together with graphite or PTFE packing, which cannot withstand switching. It is easy to leak, and the valve seat is designed to be rigid, so it is difficult to balance the operating torque and valve sealing
Method used
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[0012] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0013] see figure 1 , The present invention includes a valve body 1, a valve cover 8, a ball 3, a valve seat 2, a valve stem 9, a three-way handle 13 and a handle steel pipe 12 for manual operation.
[0014] The valve body 1 and the bonnet 8 are connected to form a cavity, the valve body 1 and the bonnet 8 are tightly connected by flanges through studs 6 and nuts 7), and the ball 3 is located in the middle of the cavity; in the valve body 1 Between the sphere 3 and between the bonnet 8 and the sphere 3, elastic valve seats are respectively provided; the lower end of the valve stem 9 passes through the valve body 1 and is connected with the sphere 3; the three-way handle 13 is connected with the upper end of the valve stem 9, and the handle Steel ...
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The invention discloses a low-operating torque and low-leakage floating ball valve. The low-operating torque and low-leakage floating ball valve comprises a valve body, a valve cover, a ball body, a valve seat, a valve rod, a three-way handle and a handle steel pipe, wherein a filler gland is arranged on the valve rod; the lower part of the filler gland is connected with the valve body; a valve rod filler, a second O-shaped ring bracket located below the valve rod filler and a second O-shaped ring mounted on the second O-shaped ring bracket are arranged in gaps among the filler gland, the valve body and the valve rod; a first O-shaped ring and a graphite gasket are arranged between the valve body and the valve cover; and the valve seat adopts an elastic valve seat. The low-operating torque and low-leakage floating ball valve is novel in structure design, has the characteristics of good stability, long service life, excellent fireproof performance and the like, and realizes ultralow radiation leakage between the inside and the outside; the low-operating torque and low-leakage floating ball valve is mainly applied to places with high sealing requirement, frequent operation and pneumatic or electric self-control operation configuration demand; and due to the design of the elastic valve seat, the processing precision requirements of the valve body, the valve cover and the ball body are lowered, and the operating torque is reduced.
Description
technical field [0001] The invention relates to a valve, in particular to a floating ball valve with low operating torque and low leakage, which belongs to the field of fluid control in the field of mechanical manufacturing. Background technique [0002] We know that ball valves are widely used in various fields such as petroleum, chemical industry, steel, metallurgy and electric power. A valve seat arranged between the valve body and the sphere and between the bonnet and the sphere, a valve stem with one end passing through the valve body and connected with the sphere, a three-way handle connected with the other end of the valve stem, and a three-way handle connected Connected handle steel pipe. Between the valve body and the bonnet, graphite or PTFE gaskets are generally used to seal together, and between the valve body and the valve stem are generally sealed together with graphite or PTFE packing, which cannot withstand switching. It is easy to leak, and the valve seat ...
Claims
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IPC IPC(8): F16K5/06F16K41/02
Inventor 鲁诗强方月英
Owner 江苏泰伯铸造有限公司