Requirements for the Use of Hydraulic Door Closers

The basic components of hydraulic door closers include supporting guides, transmission gears, return springs, one-way valves, rack plungers, throttle valve cores and housings, end caps, sealing rings and connecting rods. The shell and the connecting rod play the role of fixing the door closer and connecting the door leaf and the door frame.

Mortise Lock Suppliers share this article for you.

1 Introduction

Due to the different detection methods, the opening times of the door closers are incomparable among the American standard, the European standard and the national standard.

American Standard Door Closer

1) High-end American standard door closer

Reached 2 million opening life tests. Meet the American ANSI 156 level 1 requirements. With power adjustable function.

It is suitable for heavy-duty high-strength door control systems for public buildings, engineering and maintenance doors with high security and high frequency of use.

2) Mid-range American standard door closer

Non-fire door closers have reached 1 million opening life tests. With adjustable strength function.

It is suitable for the door control system of high security, high-strength residential doors and medium-strength commercial doors.

European standard door closer

1) High-end European standard door closer

More than 500,000 life tests meet the requirements of EN 1154. With adjustable strength function.

It is suitable for heavy-duty high-strength door control systems for public buildings, engineering and maintenance doors with high security and high frequency of use.

2) Mid-range European standard door closer

More than 300,000 times of life test meets the requirements of EN 1154. With adjustable strength function.

It is suitable for door control systems for high-strength residential doors and medium-strength commercial doors with high security and high frequency of use.

China Standard Door Closer

More than 500,000 life tests, the latest standard for built-in vertical door closers, also require more than 2 million life tests.

It is suitable for door control systems for industrial and mining enterprises, residential projects, commercial buildings, hospitals, schools and other occasions.

Hydraulic Door Closer

2 Requirements for use

1) Whether it is necessary to automatically stop the door after opening the door;

2) Damping buffer function-damping buffer is generated after the door is opened quickly to a certain position, and the damping buffer force and range can be adjusted according to the requirements of use; this function is used to prevent the door or lock from hitting the wall when the door is opened quickly, or emergency escape Prevent people from leaning forward and falling to the ground due to weightlessness when opening the door quickly.

3) Delayed slow door closing-the door closes slowly at a uniform speed from the maximum position of the door opening, and can be steplessly adjusted as required. It is suitable for use in places with frequent entry and exit, especially in hospitals, where there are doors and passages for the elderly, children and the disabled.

4) The closing force can be adjusted-it can be used for installation on doors with a wide range of door weight and door width, and in places where the door closing resistance is large due to environmental reasons. Stepless adjustment at will to obtain a satisfactory closing force, especially in coastal cities, vehicles and ships, where the closing resistance (the force on the door) often changes due to the influence of wind.

5) Temporary closing performance of damping reset function (vertical door closer)——When opening any angle, closing the speed control valve should temporarily suspend the damping reset function.

6) Safe and fast super-damping closing performance (vertical door closer)-It should be able to close safely and quickly when external force is suddenly applied during closing at any angle.

7) Operating environment: fire protection requirements and antifreeze requirements for places below minus 35° in winter.