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A power-storage, air duct technology, applied in valve details, valve devices, valve operation/release devices, etc., can solve the problems of uncontrollable sealing and pressing force, large workload of air duct valves, etc., and achieve low workload , The effect of controllable sealing compression force and easy process control
Active Publication Date: 2019-01-15
BEIJING MECHANICAL EQUIP INST
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[0003] The purpose of the present invention is to provide a spring-charged air duct valve for sealing, which solves the problems of large working load and uncontrollable sealing force of the air duct valve in the past
Method used
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[0012] A spring-loaded air duct valve for sealing, including: a plugging cover 3, a screw 9, a sealing ring 10, and a motor 11, and also includes: a body 1, a fixing frame 2, a bearing bush 4, a ball head 5, and a retaining ring 6, pull bar 7 and stage clip 8.
[0013] The fixed frame 2 is a support for the spring-loaded air duct valve used for sealing. The fixed frame 2 is an oblong left and right symmetrical support structure. The two vertical plates of the fixed frame 2 have oblong holes along the up and down direction; the body There are four light holes on 1, and the screws pass through the light holes on the body 1 and the oblong holes on the fixing frame 2 to fix the body 1 and the fixing frame 2. The lead screw 9 and the body 1 cooperate through a screw pair; the lower half of the lead screw 9 is hollow, the inner cavity is threaded, and the retaining ring 6 and the lead screw 9 are threadedly connected. Pull bar 7 lower ends are threaded, and retaining ring 6 center ...
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Abstract
The invention discloses a spring force storage type air channel valve for sealing. The spring force storage type air channel valve comprises a blocking cover (3), a lead screw, a seal ring and a motor (11) and further comprises a body (1), a fixed frame (2), a bearing bush, a ball head, a blocking ring, a pull rod and a compressed spring. During working, the fixed frame (2) is fixed to the body (1), and the lead screw stretches out or retracts relative to the body (1). Under the stretching-out working condition, the lead screw stretches out and pushes the blocking cover (3) downwards, so that the blocking cover (3) does not press an air channel inlet tightly any longer, and an air channel is opened. Under the retracting working condition, when the lead screw retracts to the in-place position, the seal ring makes contact with the air channel inlet and does not move any longer, meanwhile, the body (1) sends a in-place closing signal, after an external circuit receives the in-place closing signal, delaying is conducted for the specified duration, and electricity is turned off. After electricity of the external circuit is turned off, the lead screw stops moving, and at the moment, the compressed spring is in the force storage state and provides sealing compressed force all the time. The spring force storage type air channel valve has the characteristics that workload is low, the sealing compressed force can be controlled, the function is reliable, and process control is easy.
Description
technical field [0001] The invention relates to an air duct valve, in particular to a spring storage type air duct valve for sealing. Background technique [0002] The air duct valve is an actuator on the air duct, including: blocking cover, lead screw, sealing ring and motor. When the air duct valve is in the open state, there is a large gap between the blocking cover and the end face of the air duct, and the air duct is ventilated; when the air duct valve is in the closed state, the blocking cover is pressed tightly on the end face of the air duct, and the air duct stops ventilation and sealed. The blocking cover of the current air duct valve is directly connected with the lead screw. When the air duct valve receives the in-position position and sends out the closed in-position signal, the blocking cover contacts the end face of the air duct and stops retracting. The magnitude of this force is uncontrollable and places a heavy load on the motor and external circuitry. ...
Claims
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Application Information
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