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  • What a Door Closer Can Do for You?

    The concealed door closer is suitable for doors made of various materials such as wooden doors and metal doors. The slide rail can only be seen when the door open. The concealed installation method. Not only can it effectively protect the door finish, The concealed door closer can also achieve a perfect integration with the interior design. The concealed door closer integrates functions such as autonomous return and silent buffering, and has a function of stopping the door. The structure of the hidden door closer is stable. After 200,000 times of life test, there is no breakage and oil leakage. It is safe, sturdy and durable. Concealed door closers can better provide customers with high quality enjoyment and safety protection.
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  • What Are The Characteristics of Cast Iron Concealed Door Closers

    1. Excellent material: cast iron concealed door closers use aluminum alloy housing, steel arm and components, SO the whole is durable and hard and external forces are not easy to damage; 2. Excellent workmanship: such as closed cylinder, shapely slide rails, precise oil circuit structure and other precision design, cast iron concealed door closer makes the closing force efficiency is excellent; 3. Concealed design: The cast iron concealed door closer has a narrow cylinder body, which adopts in-line concealed installation. The cast iron concealed door closer is concealed or the slide rail is exposed, making the door decoration environment more beautiful.
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  • Is Our Aluminum Alloy CAM Door Closers Suitable for You?

    The door closer is made of aluminum alloy die-casting, the switch is installed silently and firmly, and does not fall off. Rugged and wear-resistant, aluminum alloy CAM door closer is a good product in home decoration! The rotating shaft of the rotating rod is smooth and smooth, and the switch is silent. Aluminum alloy die-casting, multiple processing at one time, durable. Good tightness, refusing to leak oil, antifreeze hydraulic oil can be used in low temperature 40 ℃. Even if the door frame and they are not on the same plane, it can still be smoothly turned, Meet a variety of installation requirements. Tighten the screws clockwise to reduce the closing speed, and loosen the screws counterclockwise to speed up the…
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  • What To Consider When Choosing a Door Closer

    The factors that should be considered when choosing a door closer are: the width of the door, the frequency of opening the door, the use requirements and the use environment. The width of the door is the most important factor in choosing the type of door closer. Common doors include fire doors, wooden doors, aluminum alloy doors, glass doors, and steel doors. Usually the weight of the door is small, so choose the model with lower strength, and vice versa. The door opening frequency is a factor closely related to the product quality. For occasions with frequent use, the sealing performance of the product should be required to be long and the service life to be long. 1) Is it…
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  • What Is The Working Principle of The Door Closer?

    The working principle of the door closer is: when the door is opened, the door body drives the connecting rod to move, and the transmission gear rotates to drive the rack plunger to move to the right. During the rightward movement of the plunger, the spring is compressed, and the hydraulic oil in the right cavity is also compressed. 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 into the left chamber through the check valve. When the door opening process is completed, as the spring is compressed during the opening process, the accumulated elastic potential energy is released, and the plunger…
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  • What Is a Door Closer and What It Does?

    The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be released after compression and closed automatically. It acts like a spring door, which can ensure that the door is accurately and timely closed to the initial position after it is opened.   Modern hydraulic door closers (referred to as door closers) began with a patent registered by Americans in the early twentieth century. It is different from traditional door closers in that it buffers the liquid in the door closer by throttling. . The core of the hydraulic door closer design idea is to realize the control of the door closing process, so that various functional indicators of the door…
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  • What issues should be considered when choosing a door closer?

    1. Instructions for installation and use of the door closer Before installing the door closer, the user should read the installation instructions and install and use it according to the installation and operation manual. When installing, be sure to ensure the installation size, the correct connection, the screws should be fast and reliable, the hinge points are flexible, and there is no friction phenomenon with the door. The main arm must be pre-stressed according to the instructions to ensure effective door closing and door locking. When the main arm is pre-stressed, the vertical door plane of the connecting rod (door closed state) is appropriate. 2. What issues should be considered when choosing a door closer? Before choosing a door closer,…
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  • How to choose a fire door closer, do you know?

    In the event of a fire, the fire door linkage door closer can help isolate the fire source, and the linkage door closer is connected to the fire protection system. Usually, the fire door can be arbitrarily stopped and opened and closed within the range of 0-180 degrees. . Controlled release of the energy storage mechanism during the fire, generate torque, close the door leaf by itself, and restore the non-energized state by itself, giving a feedback signal. When the release has not been reset, the function of not positioning the door closer can be realized, so that the fire door becomes a movable fire door. After the alarm is released, it needs to be manually reset. After the reset,…
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  • What are the characteristics of the door closers after a century?

    The purpose of the door closer is to complete the control of the closing process, so that the various functional goals of the closing process can be adjusted according to people's needs. However, the meaning of the door closer is not only to automatically close the door, but also to maintain the door frame and the door body. More importantly, the door closer has become an indispensable part of the modern construction of intelligent handling. As early as 1950, some companies had entered the door closer industry. So after a century, what are the characteristics of the current door closers? 1.Sliding arm door closer The cam structure slide arm door closer uses the EASY OPEN skill (Cam-Action cam structure), and…
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  • Why does the door closer leak oil?

    The most critical quality problem of the door closer is whether it leaks oil, because the door closer relies on the internal hydraulic system to throttle the fluid to achieve the control of the closing process. The oil leakage means the failure of the hydraulic system, so the hydraulic system is decided The only standard for the life of the door closer. The main cause of oil leakage is that the pinion support guide wears to increase the clearance, the seal wear causes the sealing effect to decrease, or when the buffer effect is adjusted, the throttle body rotates away from the valve body counterclockwise. 2. Reasons for the reduction of the buffer effect of the door closer and repair…
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