CR Coil Recoiling Line serves cold rolled steel sheet edge trimming before steel sheet galvanizing or color coating. the strip edges of cold roled coil are not so straight enough, the edge trimming and recoiling is necessary.
As base plate of galvanized sheet and PPGI sheet, the cold rolled steel sheets are thin and precise, the CR recoiling line should be high speed high precision.
Composition of CR Coil Recoiling Line: uncoiler, pinch feeder, CPC, anti-fluttering, edge trimmer, burrs removing, EPC, deflector roll, Recoiler.
Cr Coil Recoiling Line,Steel Coil Recoiling Line,Steel Coil Edge Trimmer,Cr Coil Rewinding Line Wuxi Jinye Complete Set of Equipment Co.Ltd. , https://www.machinejinye.com
Wet alarm valve device from the wet alarm valve, hydraulic alarm, delay and pressure switch, pressure gauge, drain valve, test valve, alarm test pipeline and other components. A wet alarm valve is a one-way valve that allows only water to flow into a wet system and drives the ancillary components to alarm at a regulated pressure. How it works: Wet system pipe network filled with pressure water, long-term standby state, suitable for 4 ℃ -70 ℃ ambient temperature (and only vertical vertical installation). When a fire occurs in the protected area, the temperature of the environment rises, the temperature sensor (glass ball) of the nozzle ruptures and the nozzle ejects water to extinguish the fire. At the same time, the water flow indicator indicates the fire area and the wet alarm valve opens the water supply to extinguish the fire. A small part of the water flow Alarm pipeline, driving hydraulic alarm, pressure switch, hydraulic alarm issued a continuous alarm, pressure switch action: start spray pump, control center sound and light alarm. Dry-type alarm valve for dry sprinkler alarm fire extinguishing system, belonging to the fire alarm system and control valves, the system is generally used in buildings with ambient temperature below 4 ℃, in the servo state, the system Compressed air in the pipe network through the dry alarm valve will fire pressure water seal on the water side, when the closed nozzle occurs when the pipe pressure drops and reaches a certain value dry alarm valve opens, pressure water through the valve into the system pipe network Extinguishing. How it works: before the start of dry alarm valve (connected with the water side of the pipe filled with pressure water, dry alarm valve after the pipeline filled with compressed air, the alarm valve is turned off. In the event of a fire, the heat-sensitive element of the closed nozzle is activated and the nozzle is opened. The compressed air in the pipe is sprayed from the nozzle so that the pressure on the outlet side of the dry-type valve drops, causing the water pressure in front of the alarm valve to be greater than the pressure in the rear, The valve is opened automatically, the pressure water enters the water supply pipe, and the remaining compressed air is pushed out of the opened nozzle and then sprinkled to extinguish the fire. At the same time as the dry alarm valve is opened, the passage to the hydraulic alarm and pressure switch is also opened, the water impinges on the hydraulic alarm and pressure switch, and the pump is started to pressurize the water supply. Rain alarm valve is dehumidification alarm valve outside the more alarm valve. Deluge valve that can be applied to the rain system can also be used for water curtain system, water spray system and pre-action fire extinguishing system. The difference between the deluge valve and the wet alarm valve The base of the deluge valve system. The outlet end of the valve is usually an empty pipe or filled with hydrostatic water column. The pipe network on the side of the wet alarm valve system is filled with pressure water. How it works: Separated by the diaphragm to the pressure chamber and water supply chamber, due to the upper and lower water area and gravity difference, to achieve a good seal closed. In the event of a fire, the fire detector sends a signal to open the diaphragm on the deluge valve solenoid valve, or as a closed-head heat sensing signal when the heat explosion, (you can also manually open the quick-opening ball valve) to the pressure chamber After the water is discharged quickly, the pressure in the water supply chamber at the lower part of the valve flap rapidly pulls up the valve flap to enter the system pipe network to extinguish the fire. At the same time, it will flow into the alarm pipe to make the hydraulic alarm sound an alarm and switch on the pressure switch to send an electrical signal to the general control room and start the fire pump to supply water. The pre-action alarm valve is made up of the deluge valve and the wet alarm valve, the deluge valve is located on the water supply side, and the wet alarm valve is located on the system side and becomes a pre-acting valve group. The system is composed of preaction valve, hydraulic alarm bell, pressure switch, air compressor, air maintenance device, signal disk valve and so on. The system is equipped with closed water sprinkler and uses common detection system as alarm and start device. How it works: In the event of a fire, installed in the protected area temperature sensor fire detectors send fire and other signals. Fire alarm controller or fire control center, after receiving the alarm signal to issue a directive to open the solenoid valve on the deluge valve, so that the deluge valve open, pressure water flow into the system side of the pipe network, into a wet sprinkler system, while the hydraulic alarm issued To bitter, pressure switch action feedback to the control center shows the pipeline has been filled with water, and start the fire pump. At this point the pipeline installed closed sprinkler has not been released, will not spray water. People can still take the initiative to take appropriate actions by the supervisor to put out the fire to avoid water damage caused by nozzle action. If the fire control can not continue to develop, resulting in closed nozzle glass ball action water spray, the pump automatically starts. After the fire is extinguished, the solenoid valve should be closed, so that the deluge valve is closed, and the water in the tube is excluded to maintain the system inflation pressure within the range of 0.03-0.05MPa, restoring the quasi-working condition.