Asphalt pump does not drain or discharge less? Causes: 1. Asphalt pump rotation direction is wrong; 2. In and out of the valve on the tube is not open; 3. The suction pipe connections at the interface leaks; 4. Suction pipe is not immersed in the oil; 5. Inhalation height exceeds the regulatory value; Pump into and out of the pipeline and filters, cutting and other external media condensation; 7. Liquid temperature is low and the medium viscosity increases. Treatment methods: 1. Correct direction; 2. Open the valve; 3. Test the joints, re-convergence; 4. Inspect the suction pipe, immersed in the oil surface; 5. Improve the suction surface height; , The need to use asphalt pump, piping and all the devices are equipped with double-layer moisturizing; 7. To pre-hot liquid to reduce medium viscosity. Insulation bitumen pump structure 1. Insulation bitumen pump important insulation sandwich, gear, pump body, before and after the cover and shaft seal installation and other important components. Parts of the pump body and the insulation interlayer in contact with the low-temperature medium are all of Class II materials, namely cast carbon construction. The main drive shaft, gear, bearing sleeve, etc. are made of high-quality carbon steel and heat treatment by the high strength and wear resistance. Insulation bitumen pump shaft seal with multi-stage low temperature resistant packing seal, sealing function and reliable. Insulation asphalt pump and motor coupling with flexible coupling device installed in the cast iron chassis. 4. Insulation bitumen pump inlet and outlet ports and heating pipe into and out of oil, are used to regulate the flange convergence (GB / T9116-2000). Insulation bitumen pump works Insulation bitumen pump body is equipped with a pair of rotary gear, a conscious, an active, dependent on the intermeshing of two gears to pump all the task chamber divide two separate parts, set A as the suction chamber, B for drain chamber. Asphalt pump operation, consciously driven gear drive gear rotation, when the gear from engagement to disengagement, the suction side (A) constitutes a part of the direct air, the liquid under atmospheric pressure is sucked into the pump, the liquid sucked into the pump overflow Each tooth valley of the gear is brought to the discharge side (B). When the gear enters into engagement, the liquid is extruded to form a high-pressure liquid which is discharged out of the pump through the discharge port of the pump. When the gear kept rotating, A, B on both sides of the non-stop oil and oil drain.
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