[usage]

When the door is opened, the door body drives the connecting rod to act, rotates the transmission gear, and drives the rack plunger to move to the right.

During the right movement of the plunger, the spring is compressed and the hydraulic oil in the right chamber is also pressurized.

The check valve ball on the left side of the plunger is opened under the action of oil pressure, and the hydraulic oil in the right chamber flows into the left chamber through the check valve.

When the door opening process is completed, because the spring is compressed during the opening process, the elastic potential energy accumulated in the marine rectangular window is released, pushing the plunger to the left to drive the transmission gear and the connecting rod of the door closer to rotate and close the door.

[precautions]

The factors that should be considered in selecting the door closer are: the weight of the door, the width of the door, the frequency of opening the door, the use requirements and the use environment, etc.

The weight of the door and the width of the door are the main factors in choosing the model of the door closer. The common doors include fire doors, wooden doors, aluminum alloy doors, glass doors, steel doors, etc.

Usually, if the weight of the door is small, choose the model with less force, and vice versa. The door opening frequency is a factor closely related to the product quality. For the occasion of frequent use, the product should have good sealing performance and long service life.

When using the marine door, pay attention to its use value and carefully follow the use rules to avoid unnecessary trouble and damage.