Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function
A two-way sealing and floating technology, used in shaft sealing, engine lubrication, valve lift, etc., can solve the problems of difficult processing and assembly of butterfly valves, heavy metal retaining ring, etc., to overcome difficulties in processing and assembly, improve manufacturing and Assembly precision, light movement effect
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[0021] The principle and structure of the present invention will be further explained below in conjunction with the drawings.
[0022] figure 1 It is the main sectional view of the two-way sealing butterfly valve with hydraulic floating seat and anti-silt function. The two-way sealing butterfly valve includes a valve body 1, a valve seat 2, a sealing pressure plate 3, a valve plate 4, a pressure block 5, a retaining ring 6, a lower sleeve 12, a lower sleeve lubricating water tank 18, a lower valve shaft 15 and an upper valve shaft 17. . The sealing pressure plate 3 is fixed on the valve plate 4; the lower valve shaft 15 and the upper valve shaft 17 are at the same centerline, and both are installed on the valve body 1; When the upper valve shaft 17 rotates under the action of an external force, it drives the valve body to rotate around the center line of the upper valve shaft to realize the opening and closing of the butterfly valve.
[0023] When the water flow direction is posi...
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