Door: principle of operation, construction, and installation recommendations
If you need to make the door close automatically, the best thing you can think of, is to install door closer. Alignment and proper installation of this fixture will once and forever solve the problem of draughts, and to overcome laziness and forgetfulness some visitors. Most often such a device is installed in places where there is a lot of people, offices, dwelling houses, trade centers, train stations, etc. Often door found in a private house, especially those owners who love and appreciate comfort and tends to make the dwelling comfortable as possible.
The device and principle of operation
The simplest device that can be used for automatic closing of the door is the spring. Door implements the same principle. At the core of his work is the tension force arising from the stretching of a spring is placed in its housing, which, in turn, filled with oil. The power and the speed at which the door closes the passage, depend on the type of device and can be adjusted using the adjustment screws. The principle of operation is as follows: when a door is opened the force of the person is transmitted via the piston and the lever pulls on a spring that leads to its compression. The oil through the valve flows into the vacant chamber. And after the person releases the door, the spring acts on the piston, and the liquid returns to the primary camera. Note that the motion of the oil is carried out by hydraulic system, which consists of channels and which can be adjusted by means of screws. The more they screwed into the body, the narrower the channel and the slower the liquid flows.
Door: how it happens?
Some models of this device is equipped with a special valve is responsible for additional "dohelp/argument" doors, and as a mechanism to delay closing of the valves. The latter function is very useful in cases when through the opening needs a lot to bring or to bear. Door can be installed on almost any type of door, from wooden ones, to glass. The speed with which this device performs its work, as a rule, is regulated at two levels: the first is responsible for the speed of closing at the major axis of the stroke of the door leaf and the second at the final closing, which occurs a few inches before the box. By its power this device is from forty to one hundred and twenty pounds. Proper selection and installation of door closer depends largely on the weight of the fabric of the door itself. If it is too easy, then a powerful device it will quickly hurt. In the reverse situation, if you set a weak latch on the heavy door, he will not be able to perform their normal functions and will break down quickly.
Installation and operation characteristics
The installation of the device depends entirely on the direction in which the door is opened (by itself or on itself). Its installation is performed in the upper part of the door frame or the door leaf (the upper part). To door closer has a long and keep in mind that to pull, hold or locking the door with various things. From this it wear out the piston and oil seals, broken gears and oil leaks. Bad closers can not be repaired, and so instead they have to buy a new one.