Asphalt mixing plant is one of the key equipment for road construction. It is mainly used in the production of asphalt mixture for paving road surfaces. Asphalt mixing plant consists of a number of parts, including dosing system, dryer, agitator, dust removal system, fuel system and so on. Asphalt Mixing Plant,Mixer Plant,Asphalt Mixing Bitumen Equipment,Asphalt Paving Equipment BituRock Science & Technology (Jiangsu) CO., LTD , https://www.biturockplant.com
The batching system is one of the core parts of Asphalt mixing plant. It is responsible for adding various raw materials to the blender in a certain proportion. These raw materials include asphalt, sand, gravel and other additives. The batching system usually consists of a weighing sensor, a batching bucket and a batching transfer device.
The dryer is another important part of the Asphalt mixing plant. It is mainly used for drying raw materials such as sand and stones. There are heating elements and rotating agitators inside the dryer, which can make the raw materials fully heated and mixed evenly.
Mixer is one of the core parts of Asphalt mixing station. It is responsible for mixing various raw materials together to produce a high quality asphalt mixture. The agitator usually consists of multiple mixing blades, which can fully mix the raw materials to ensure the stable quality of the asphalt mixture produced.
Dust removal system is one of the important components of Asphalt mixing plant. It is mainly used to collect dust and exhaust gases generated during the production process. The dust removal system is usually composed of multiple filters, which can effectively filter out dust and exhaust gas to ensure a clean working environment and air quality.
Fuel system is one of the key parts of Asphalt mixing plant. It is responsible for providing the fuel to power the Asphalt mixing plant. The fuel system usually consists of a fuel pump, a fuel filter and a fuel injector.
Asphalt mixing plant is a kind of high efficiency asphalt mixture production equipment, widely used in road construction field. It has the advantages of high automation, high production efficiency, stable product quality and so on, and provides a strong support and guarantee for road construction.
VPR pneumatic valve positioner (referred to as VPR positioner) is Japan Yamatake - Honeywell VFR cam deflection valve dedicated attachment. It is in accordance with the pneumatic regulator signal, the regulator valve quickly and accurately, so as to accurately regulate the valve flow and ensure flow characteristics. I plant the introduction of production in the mid-eighties, has been widely used in petrochemical, power, light industry and chemical industry automation systems. In order to properly use and repair, need to explain its working principle. After the input signal increases, the bellows expands to push the baffle (ie lever) * near the nozzle end face. When the clearance is reduced, the back pressure of the nozzle is increased and the valve core is pushed down by the diaphragm of the relay. The air inlet opens a large exhaust port to close the output pressure increases, so the actuator push rod to move down to make the valve spool open or closed. As the spool rotates, the cam also rotates and the feedback spring is pulled by the cam follower so that the baffle tends to leave the nozzle until the torque generated by the bellows is balanced with the feedback spring moment. As a result of this torque balance, to ensure that the valve opening and input signals corresponding relationship between the accurate, to achieve the correct spool positioning. The following analysis of common causes of failure and measures. Simple exclusions will be omitted. Fault a positioner no output pressure 1. No signal pressure, â‘ pneumatic regulator failure; â‘¡ large number of signal line leak. 2. A large number of bellows leak, repair solder or replacement 3. No gas pressure or gas pressure is too low. 4. Corrugated throttle orifice plugged, using a diameter of less than 0.2mm wire to clear. 5. Locator zero position adjustment is inappropriate, that the gap between the bezel and the nozzle is too large. Use tools to readjust. 6. Cam installation location is wrong. Because a cam contains air-open and air-off, respectively, and other percentages; open air and gas-off linear features, with four mounting holes, easy to install the wrong. 7. Baffle and nozzle end face is not vertical, the baffle and the nozzle face is still in contact after a lot of exhaust. 8. Nozzle hole end face pit, need to be replaced. Burr on the end surface, re-ground. 9. Nozzle and base adhesive leaks. More keyword search: Pneumatic valve