Plane sealed 3-way valve
A flat seal and three-way valve technology, applied to multi-way valves, valve details, valve devices, etc., can solve the problems of increased labor intensity and maintenance troubles, easy damage of seals, short service life and other problems, and achieve simple structure , The matching accuracy is not high, and the effect of prolonging the service life
Active Publication Date: 2005-01-12
曹建钢
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Problems solved by technology
[0002] The three-way valves used in the pipelines of important installations in various industries now use butterfly valves or ball valves for their opening, closing, and sealing devices. The curved surface is not only difficult to process, but also requires high processing accuracy, especially the accuracy of the joint. , and the sealing surface is directly stressed, the seal is easily damaged, the service life is short, and it needs to be replaced frequently, which increases the labor intensity of workers and the trouble of maintenance
Method used
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[0010] The present invention will be further described below in conjunction with the embodiments of the accompanying drawings.
[0011] The butterfly plate 10 is -shaped, with two corresponding screw holes around the bottom, two waist-shaped blind holes corresponding to the edge of the lower surface of the bottom and communicating with the screw holes, a groove in the middle, a blind hole in the middle of the groove, and a blind hole on the upper surface of the bottom. Ring groove and screw hole with stepped cross section, rubber material is poured into the ring groove to make a seal 18 higher than the groove, and a compression spring 20 and a steel ball 19 are installed in the blind hole of the butterfly plate 10, and the middle The pressure plate 17 with the horn hole is fixed in the groove on the lower surface of the butterfly plate 10 with screws, so that the steel ball will not fall out of the butterfly plate 10 to form a valve butterfly, such as image 3 shown.
[0012...
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The planar sealing three-way valve is especially suitable for use in petroleum, chemical, power generating and other industry. It consists of valve casing with connecting pipe, upper and lower covers, connected sealing unit, and opening / closing unit. The sealing unit includes the butterfly valve comprising butterfly plate with spring, steel ball and sealing part and the valve seat fixed on the valve casing. The opening / closing unit is one interlocked integral comprising a shaft with cam and matching with steel balls on two valve butterflies and a pulling rod connecting the two valve butterflies. The sealing unit is one planar sealing structure. The cam on the rotating shaft applies the opening or closing force directly onto the steel balls of the valve butterflies, with the magnitude of the force being regulated automatically with the spring on the valve butterflies, and the sealing part has small contact are with the valve seat, acted force, high sealing performance and long service life.
Description
technical field [0001] The invention relates to a valve, especially a plane sealing three-way valve suitable for installation and use in pipeline connections of important devices in industries such as petroleum, chemical industry, and power generation. Background technique [0002] The three-way valves used in the pipelines of important installations in various industries now use butterfly valves or ball valves for their opening, closing, and sealing devices. The curved surface is not only difficult to process, but also requires high processing accuracy, especially the accuracy of the joint. , and the sealing surface is directly stressed, the seal is easily damaged, the service life is short, and it needs to be replaced frequently, which increases the labor intensity of the workers and the trouble of maintenance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a flat sealing three-way valve with a flat sealing st...
Claims
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Inventor 曹建钢
Owner 曹建钢