Fire automatic door closing device

Abstract

The invention relates to a fire automatic door closing device, which comprises a hydraulic main engine, an arm rod connected with the hydraulic main engine at one end, a rotating shaft fixedly connected with the other end of the arm rod, one end connected with the door frame, and the other end rotatably connected with the rotating shaft The connection plate installed on the connection plate, the clamping device installed on the connection plate, the fire automatic door closing device also includes the smoke detection device, the open flame monitoring device installed on the connection plate, and the smoke detection device and the open flame monitoring device installed on the connection plate A connected driving device, the driving device is connected with the clamping device, and when smoke or open flame is detected, the driving device drives the clamping device to disengage from the rotating shaft to close the door. The present invention reduces the cost of technical upgrading of existing products; when in use, the device can make timely feedback on smoke and fire, and control the closing of the door. The use is only the power consumption of the device monitoring the temperature change, reducing the cost, and the device structure is simple , high integration, low requirements for installation difficulty.

Description

technical field [0001] The invention relates to a fire automatic door closing device. Background technique [0002] The door closer is a device that can automatically close the opened door through a spring and a hydraulic pressure. There are currently two kinds of door closers, one is the normally closed door closer, which cannot open the door to the stop position, and the other is the one with The positioned door closer can keep the door open after the door is opened, which is more conducive to people's walking and ventilation. [0003] Among them: in case of a fire, the door closer with positioning needs to close the door immediately in order to prevent the entry of fireworks. At present, there are mainly the following two technologies: [0004] 1. Electromagnetic door stopper: This device uses the electromagnetic principle, which is composed of an electromagnet composed of an electromagnetic coil and a suction plate. When the door is pushed, the electromagnetic door sto...

AI Technical Summary

Problems solved by technology

There is no need to use electricity at ordinary times. When the door is opened and positioned, it is necessary to manually insert the release into the electromagnetic release device. In case of fire, the power supply is released, and the fire door is automatically closed under the action of a normal door closer. However, it will not automatically reset when it is used again, and it needs to be manually reset.

Because of the many internal mechanical structures, the picks, connecting rods, locks, etc. are easily deformed or jammed, and quality problems often occur, and the power transmission and closing doors do not comply with fire protection regulations, and are gradually eliminated by the market.

[0006] In addition, they also need to be networked with the fire protection system. When installing facilities, it increases the difficulty of construction design, construction, wiring, etc., and the cost of accessories is also high

Images