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Novel pressurizing sealing ball valve

A sealed ball valve, a new type of technology, applied in valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of leaking sealing rings, affecting service life, and ring damage, ensuring clean opening and closing reversing, and overcoming difficult problems. The effect of adjusting and prolonging the service life

Inactive Publication Date: 2013-10-16
QIDONG METALLURGICAL MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also major defects in this valve: 1. The sealing gap and the position of the valve core are not easy to detect and adjust, so leakage or damage to the sealing ring is often caused by improper clearance or position deviation of the valve core hemisphere.
2. The installation and maintenance of sealing parts are cumbersome, and the replacement of sealing rings is difficult
3. The dust accumulated in the cavity has not been removed, which affects the service life
Since the existence of these defects greatly affects the application effect and cost of the product, there is an urgent need for an improved technology to solve the problems in the prior art

Method used

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Embodiment Construction

[0013] like figure 1 and figure 2 As shown, the novel pressurized sealing ball valve of the present invention includes a sealing gap adjustment device, a valve core hemispherical adjustment mechanism and a dust removal device. The sealing gap adjustment device is composed of a valve body 1, a sealing assembly 9, a tension bolt 13, a compression bolt 14, an O-ring 10, a washer 11 and a nut 12. The sealing assembly 9 is formed by connecting the sealing body 21, the O-ring 22, the positioning ring 23 and the sealing ring 24 with hexagonal bolts. The valve body 1 is welded with steel plates, and there are 4-6 M16 screw holes and 4-6 φ16 through holes corresponding to the sealing body 21 on the upper end surface of the valve body 1, and the compression bolts 14 are installed in the M16 holes, and the compression The bolt head bears against the sealing body 21, and the tension bolt 13 is installed in φ16, the tension bolt is connected with the sealing body, the sealing assembly i...

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Abstract

Provided is a novel pressurizing sealing ball valve. The novel pressurizing sealing ball valve is mainly characterized by comprising a sealing clearance aligning device, a valve core hemispheroid adjusting mechanism and a deposited dust clearing device. The sealing clearance aligning device is composed of a valve body, a sealing assembly, a tension bolt and a compression bolt and can directly align sealing clearances. The valve core hemispheroid adjusting mechanism is connected by a valve cover, an adjusting bolt, a locating shaft, a valve core hemispheroid and a snap spring and can adjust the moving positions of the valve core hemispheroid, and the deposited dust clearing device is connected with a high-pressure air source to directly clear deposited dust inside the valve body. The novel pressurizing sealing ball valve has the advantages of conveniently assembling, maintaining and replacing sealing rings, conducting real-time alignment on the sealing clearances, prolonging the service life of the sealing rings, and reducing production, maintenance and use cost of products.

Description

technical field [0001] The invention relates to a valve technology, which belongs to the leading field of valve mechanical technology. Background technique [0002] There is a pressure-filled and sealed semi-spherical valve used in the blast furnace pulverized coal injection ironmaking system for material feeding and pressure-bearing pipelines. The patent number is ZL032639341. Between the cover and the valve body, a pair of sealing pairs are formed with the hemispherical valve core. When the valve is closed and sealed, the sealing ring is inflated through the inflation port on the valve body, and the sealing ring is tightly attached to the spherical surface of the valve core due to pressure deformation. closure. When the valve needs to be opened, the gas in the sealing ring is released, the sealing ring elastically recovers and separates from the spherical surface of the valve core to form a gap, and then drives the valve core to rotate to the open state, and the valve ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/08F16K5/20B08B5/02
Inventor 范超钱耀明李小波顾杰沈凯桦
Owner QIDONG METALLURGICAL MASCH CO LTD
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