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DDDC009
D&D Hardware
Aluminum Alloy
Silver
hotel, apartment, commercial, office
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The working principle of the door closer is: when the door is opened, the door body drives the connecting rod action and makes the transmission gear rotate, driving the rack and pinion plunger to move to the right. In the process of the plunger moving to the right, the spring is compressed, and the hydraulic oil in the right chamber is also under pressure. The check valve ball on the left side of the plunger opens under the action of oil pressure, and the hydraulic oil in the right chamber flows to the left chamber through the check valve. When the door opening process is completed, because the spring is compressed in the opening process, the potential energy of elasticity accumulated is released, the plunger is pushed to the left, driving the transmission gear and door closer rod rotation, so that the door is closed.
The basic components of a hydraulic door closer are support guides, transmission gears, reset springs, check valves, rack and pinion plungers, throttle spools and shells, end caps, seals and connecting rods. The housing and the connecting rod play a role in fixing the door closer and connecting the door and the door frame.
