Entering some commercial or office buildings, you will find that many doors can be closed automatically. It is not unexpected because these doors are equipped with door closers that automatically close the doors and protect the doors and frames. In the intelligent management of modern architecture, the door closer has long been an indispensable part. Today we will come to understand how the door closer mechanism, the door closer installation and the door closer price .
Door closers
The door closer, as the name implies, controls the closing process. The main function of the door closer is not only to ensure that the door is opened accurately and promptly to the initial position, but also to protect the door frame and the door body. The door closer is a spring-like hydraulic device on the top of the door. When the door is opened, it can be compressed and automatically close the door, similar to a spring.
Under normal circumstances, door closers are mainly used in commercial establishments and public buildings. Household life is less used, and more door closers are used. The use of public venues is mainly to make the doors close by themselves and ensure that they can be limited in the event of a fire. The spread of fire.
Door closer principle
The working principle of the door closer is that when the door is opened, the door body drives the connecting rod and rotates the transmission gear to drive the rack plunger to move to the right. The spring is compressed during the movement of the plunger to the right and the hydraulic oil in the right chamber is also pressurized. The one-way valve ball on the left side of the plunger opens under the effect of oil pressure, and the hydraulic oil in the right cavity flows through the one-way valve to the left cavity. When the door opening process is completed, since the spring is compressed during the opening process, the accumulated elastic potential energy is released, the plunger is pushed to the left, and the transmission gear and the door closer link are rotated to close the door.
During the spring release process, since the hydraulic oil in the left chamber of the door closer is compressed and the check valve is closed, the hydraulic oil can only flow out through the gap between the housing and the plunger and pass through the small hole in the plunger and 2 The flow path with the throttle body is returned to the right chamber. Therefore, the hydraulic oil constitutes a resistance to the release of the spring, that is, through the throttling to achieve the buffering effect, the speed of closing the door is controlled. The throttle valve on the valve body can be adjusted to control the variable door closing speed in different stroke sections. Although there are differences in the structure and size of the door closers produced by different manufacturers, the principle is the same.
Door closer installation
The installation of the door closer needs to read the instructions first, and determine the installation position according to the direction of opening the door, the strength of the closing door, and the installation dimensions between the body of the door closer, the connection seat and the door hinge.
1. According to the position instructions of the installation template specification, determine the position of the door closer screw, and then drill;
2. Immediately afterwards, install the door closer body with screws, install the fixed connection seat, and install the driver board;
3. During installation, pay attention to adjust the adjusting rod to 90° with the door frame, and then connect the connecting rod with the driving board. With a plastic cover, it can be used to catch the hydraulic oil leaked from the door closer;
4. After the door closer is installed, check whether the fixing screws are fastened and no loosening or looseness is allowed. Open the door to the maximum door opening position and check whether the hinged arm of the door closer touches or rubs against the door or door frame. .
Door closer price
There are many factors to consider when choosing a door closer. The first is the type of door. Wooden doors, aluminum alloy doors, glass doors and other doors with different weights, the smaller the quality, the smaller the strength of the door closer, and the smaller the selected model.
Reminder: It is recommended that when purchasing the door closer, if the door frequency is used, the product quality of the door closer is the key. And for occasions with frequent use, door closer products should have good sealing performance and long service life.
The above information about door closers, door closers, and door closers is briefly introduced here. I hope to help you. For more information, please visit this website. Stay tuned.
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