Asphalt heat preservation pump shaft is equipped with stuffing box at the front end, the sealing performance is more reliable, meanwhile, there is a mechanical sealing device in the bearing seat, so a large amount of leakage can not appear, and a small amount of leakage can be discharged through the leakage nozzle to receive. More keyword search: Insulation pump Seamless carbon steel pipes are made of steel ingots or solid billets through perforation to make capillaries, which are then hot-rolled, cold-rolled or cold-drawn. The raw material of carbon Steel Pipe is a round tube blank, which is cut by a cutting machine into a billet with a length of about 1 meter, and sent to a furnace for heating through a conveyor belt. The billets are fed into the furnace and heated at about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released from the furnace, it is pierced through a pressure punching machine. Generally, the more common punching machine is the conical roller punching machine. This kind of punching machine has high production efficiency, good product quality, large amount of perforation and diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively cross-rolled, continuously rolled or extruded by three rolls. Carbon Steel Tube, Mild Steel Pipe, Hot Rolled Steel Pipe, Weld Steel Pipe Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com
1, a small amount of leakage in the early start of the operation is normal, after a certain period of sealing surface running leaks will reduce or stop, downtime: cut off the power. The asphalt insulation liquid pump venting, cleaning and the impeller should be periodically rotated 180 degrees to prevent shaft deformation until the pump is completely cooled so far. Do not use the input valve on the gate to regulate the flow, to avoid cavitation, pay attention to the operation of the heat pump has no noise, if the pilot state is found to be promptly processed.
2, Asphalt heat pump has a good use of the structure, in the use of performance plays an important role and performance, can fully demonstrate the use of good performance advantages, in accordance with the actual development trend of good development. Often check the loose bolts of the situation, the heat pump casing temperature and inlet temperature are the same, the export pressure gauge fluctuations and pump vibration.
3, asphalt insulation pump should not be less than 30% of the design flow under continuous operation, if you must operate under the conditions, it should be installed in the bypass bypass pipe, and the flow to reach the above minimum, the transmission medium to the bitumen insulation pump The heat on the pump cover and bearing dissipates heat from the surface of the pump cover and bearing housing to adapt the temperature of the bearing housing to the temperature of the shaft sealing performance. Therefore, the choice of heat transfer oil pump installation location, make the pump cover and bearing seat of the heat for easy proliferation, does not appear any heat storage.
4, the bearing seat is provided with two ball bearings, by the pump heat pump insulation pump impeller side of a ball bearing with the heat transfer oil lubrication, by the coupling side of a ball bearing is lubricated with high temperature grease: each Ball bearings running 3000 hours, you must remove the clean with diesel, check the contact surface is damaged, if damaged, you must replace the new bearing. When installed by the ball bearing on the impeller side, the side with the dust cover should be installed toward the impeller, and the bitumen heat pump should be injected before starting to lubricate. On the coupling side of the ball bearings, the use of complex calcium-based high-temperature grease (ZFG-4), the re-install the bearing, with dust cover side also toward the impeller side installation, install the grease (about 1 / 2 ball bearing and housing space). After 48 hours of operation, use a grease gun to inject replenishment grease into the pressure cup on the bearing cap.
1. Seamless steel pipe for structure (GBT8162-2008). Mainly used for general structure and mechanical structure. Its representative material (brand): carbon steel, 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
2. Seamless steel pipes for conveying fluids (GBT8163-2008). It is mainly used for conveying Fluid Steel Pipe in engineering and large-scale equipment. The representative material (grade) is 20, Q345, etc.
3. Seamless steel pipes for low and medium pressure boilers (GB3087-2008) are used to manufacture various structures of low and medium pressure boiler superheated steam pipes, boiling water pipes and superheated steam pipes, large smoke pipes, small smoke pipes and arch bricks for locomotive boilers Hot-rolled and cold-drawn (rolled) seamless steel pipes of high-quality carbon structural steel for pipes. The representative material is 10, 20 steel.