A kind of operation method of manual and electric dual-purpose valve
An operation method and valve technology, applied in the direction of valve operation/release device, lift valve, valve details, etc., can solve the problem that the valve cannot be opened and closed normally, and achieve the effect of simple and reliable structure
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Embodiment 1
[0051] like figure 1 As shown in the figure, a method for operating a manual and electric dual-purpose valve is characterized in that, comprising the following steps:
[0052] Step 1, electric closing, the actuator 2 is activated to drive the valve stem 4 to descend, the valve stem 4 is connected to the valve core 5 through the limit clamping unit 6 and drives the valve core 5 to descend and contact the valve seat 31 to close;
[0053] Step 2, emergency opening, the execution component 2 stops running, manually press the unlocking lever 712 of the unlocking unit 71 in the emergency control component 7, the unlocking lever 712 abuts the top-moving unlocking block 711 to unlock the limit clamping unit 6, and the valve core 5 is It can be slid away from the valve seat 31 relative to the valve stem 4, and the valve is opened;
[0054] In step 3, the valve core is reset, and the hand wheel 721 in the reset unit 72 is manually rotated and driven, and the ejector wheel 723 is driven...
Embodiment 2
[0064] like figure 2 , 3 As shown, the manual and electric dual-purpose valve includes a valve body assembly 1 and an actuator assembly 2, the valve body assembly 1 includes a valve body 3, a valve stem 4 and a valve core 5, and the valve body 3 is provided with a valve seat 31 , the actuator assembly 2 drives the valve stem 4 to drive the valve core 5 to rise and fall, the valve core 5 and the valve seat 31 can cooperate to seal, the valve core 5 is sleeved outside the valve stem 4, The valve stem 4 is connected to the valve core 5 with a limit snap connection unit 6, and also includes an emergency control assembly 7. The emergency control assembly 7 includes an unlocking unit 71, and the unlocking unit 71 is connected from the valve stem. When the center of 4 passes through and abuts against the limit clamping unit 6 to release the limit, the valve core 5 can slide axially along the valve stem 4 .
[0065] In this embodiment, the valve stem 4 is integrally connected with ...
Embodiment 3
[0078] For the sake of simplicity, the following only describes the difference between the third embodiment and the second embodiment; the difference between this embodiment and the second embodiment is:
[0079] like Figure 10 As shown, in this embodiment, the valve core 5 is configured as a gate type.
[0080] It should be noted that the gate-type valve core 5 can make the sealing effect better and increase the applicable occasions of the valve.
[0081] work process:
[0082] The valve stem 4 is integrally connected with the valve core 5 through the limit clamping unit 6, and the actuator 2 drives the valve core 5 to descend to cooperate with the valve seat 31. When the actuator 2 is powered off and fails, the emergency control component 7 can be manually operated to unlock the unit. 71 Drive the limit clamping unit 6 to act, the valve core 5 slides freely relative to the valve stem 4, and the valve core 5 can be separated from the valve seat 31; on the contrary, after t...
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