Safety valve
A technology for safety valves and pilot valves, which is applied in the field of safety valves, and can solve problems such as damage to the sealing surface of the main valve core and the main valve seat, damage to the sealing surface of the main valve core, impact and collision, etc., to ensure opening and closing, and avoid sealing surface damage. Damage, Avoid Impact Collision Effects
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[0029] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] combine Figure 1 to Figure 3 As shown, the safety valve of this embodiment includes a main valve body 1 , a main valve core 2 , a main valve control rod 3 , a rotating shaft 4 and a pilot valve 5 . Wherein, the pilot valve 5 is inserted and fixed on the main valve body 1, and the main valve body 1 is provided with an oil inlet 11, an oil outlet 12, a control hole 13, a first oil hole 14, a second oil hole 15 and a first oil hole 15. Three oil holes 16.
[0031] The pilot valve 5 is provided with a pilot oil port 51 , a control oil port 52 , an oil return port 53 and a pilot spool 54 . The pilot spool 54 is used to control the closing between the pilot oil port 51 and the control oil port 52, the control oil port 52 and the oil return port 53, and the control between the pilot oil port 51 and the control oil...
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