Door closer principle door closer installation doo

2022-07-22
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Entering or leaving some commercial places or office buildings, you will find that many doors can be closed automatically. In fact, it is not surprising, because these door leaves are equipped with door closers, which can make the door close automatically and protect the door body and frame. In the intelligent management of modern buildings, door closers have already become an indispensable part. Today, let's learn about the principle, installation and price of door closer

when entering or leaving some commercial places or office buildings, you will find that many doors can be closed automatically. In fact, it is not surprising, because these door leaves are equipped with door closers, which can make the door close automatically and protect the door body and frame. In the intelligent management of modern buildings, door closers have already become an indispensable part. Today, let's learn about the principle, installation and price of door closer

introduction to door closer

door closer, as the name suggests, is to realize the control of the closing process. The main function of door closer is not only to ensure that the door is closed to the initial position accurately and timely after being opened, but also to protect the door frame and door body. The door closer is a spring like hydraulic device on the top of the door. When the door is opened, it can close the door automatically by compression, similar to a spring

in general, door closers are mainly used in commercial places and public buildings. They are less used in household life and more used. The use of door closers in public places is mainly to make the doors close by themselves to ensure that the spread of fire can be limited in case of fire

principle of door closer

the working principle of door closer is: when opening the door, the door body drives the connecting rod to act, makes the transmission gear rotate, and drives the rack plunger to move to the right. When the plunger moves to the right, 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 accumulated elastic potential energy is released, pushing the plunger to the left, driving the transmission gear and the connecting rod of the door closer to rotate, so that the door is closed

during the spring release process, because the hydraulic oil in the left chamber of the door closer is compressed, the check valve is closed, and the hydraulic oil can only flow out through the gap between the housing and the plunger, and return to the right chamber through the small hole on the plunger and the two flow channels equipped with throttle valve elements. Therefore, the hydraulic oil forms a resistance to the release of the spring, that is, the buffer effect is achieved through throttling, so that the speed of door closing is controlled. The throttle valve on the valve body can be adjusted to control the variable closing speed of different stroke segments. Although the structure and size of door closers produced by different manufacturers are different, the principle is the same

installation of door closer

the installation of door closer needs to first read the instructions, and determine the installation position according to the direction of opening the door, the force of closing the door, and the installation size between the door closer body, connecting seat and door hinge

1. Determine the position of installing the door closer screws according to the position instructions in the installation template manual, and then drill holes

2. Next, install the door closer body with screws, install the fixed connection seat and install the drive plate

3. During installation, pay attention to adjust the adjusting rod to 90 DEG with the door frame;, Then connect the connecting rod with the driving plate. Install a plastic cover, which can be used to catch the hydraulic oil leaking from the door closer

4. After the door closer is installed, check whether the fixing screws are fastened, and there shall be no looseness or looseness. Open the door to the maximum opening position, and check whether the hinged rotating arm of the door closer collides or rubs with the door or door frame

price of door closer

there are many factors to consider when choosing door closer. The first is the type of door. Wood doors, aluminum alloy doors, glass doors and other doors with different weights, the smaller the mass, the smaller the force borne by the door closer, and the smaller the model selected

warm reminder: it is suggested that when consumers choose door closers, if the frequency of opening and closing doors is used, the product quality of door closers is the key. And for frequently used occasions, door closer products should be required to have good sealing performance and long service life

here is a brief introduction to the principle, installation and price of door closer. I hope it will be helpful to you. Please look forward to more information

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