Heavy oil coal tar pump (ZYB) fault repair and use

1, we must first understand the ZYB heavy oil coal tar pump type, characteristics, the current situation. Understand the requirements, determine the repair target. Before testing, prepare for testing. 2, to determine the fault, diagnosed fault. Judgment, may save trouble. Confirmed to verify. 3, troubleshooting, first Jane after the complex, the first easy hard. Do not disassemble without demolition. To reduce the lack of special tools and improper operation caused by new damage, reduce the position changes and run-in time. In general, the splicing rotor is not removable, otherwise the form of tolerance can not be guaranteed, the rotor scrapped. 4, high pressure residue pump poisonous, corrosive pump, users should be invited to clean, and inform the necessary protective measures to protect the health of maintenance staff. 5, classification of the proposed fault is divided into operational failure and performance problems. Operation failure can include pump does not turn, pump temperature is too high, oil spills, oil spills, such as the maximum power exceeded. Performance failure can include the ultimate pressure, extreme pressure, suction efficiency, noise, fuel injection, gas town performance, etc. can not meet the requirements or not. 6, fault diagnosis and diagnostic examples (1) pump does not turn. Unidentified can not open the pump, so as not to aggravate the fault. Can be used to move hands and can not move. ① pump can move without turning. The reason can be coupling failure; belt slippage; motor wiring is wrong; motor damage; no power and so on. ② can not panic or plate up very heavy, the reason can be because the starting pump temperature is too low, the pump oil viscosity is too high; design and manufacture of pump stop too much oil. Too much oil caused by the pump back to too much oil (too much fuel, KCB-300 or oil vapor condensation in the pump, or in the exhaust pipe condensate oil back to the pump); foreign body in the pump ( (2) The pump (2) The pump (2) The pump (2) The pump Temperature is too high.Refers to the lowest measured near the exhaust valve exceeds the maximum oil temperature specified in the manual.As the pump temperature will make the pump oil viscosity dropped significantly and make the saturated vapor pressure of the pump oil increased so that the pump limit Pressure increase and suction efficiency decline; so that the rubber parts easy to aging; thermal expansion to reduce the running gap, in particular, the thickness of certain non-metallic rotary vane and copper sleeve hole clearance, affecting the reliability of pump operation. Pump temperature is too high The reasons may be the pump ambient temperature is too high, the intake air temperature is too high, the intake cooling device fails, the pump long-term continuous operation of the inlet pressure is too high; oil-cooled pump cooling oil is insufficient, poor circulation design effect of oil; Valve failure, etc. (3) Oil leakage can occur in the shaft Seal, fuel tank Pump parts sealing surface, drain plug, oil standard, oil hole bulkhead, stator parts and bearing through-hole connections Department, gas ballast valve (for example, 2X-8) and other parts. Gear pump kcb55 aging by the seal, Improper installation, damage to the failure, the surface is not flat, there are impurities, rough and loose castings, etc. If you stop the pump back to the oil, the oil will enter the gas town valve, the gas valve may not leak gas. To use oil-resistant rubber, according to the original design shape, the sealing surface is too large when the pressure will leak. (4) Oil leakage can occur in the pipe joints, oil cover boring cover plane, put the oil hole plug, oil drain valve (5) high power over standard. Can be long-term continuous for the inlet pressure is too high, the exhaust pressure is too high, debris into the occurrence of occlusion, pump temperature Too high, rotary vane, etc. with the gap is too small, the voltage is too high, too much pump back into the pump, etc., will cause damage to the motor should try to avoid long-term continuous operation in the vicinity of the maximum power.If there is sediment on the surface, Disassemble and remove. (6) The ultimate pressure is not up to standard External leakage, internal leakage, blockage of oil hole, poor quality of pump oil or deterioration of pollutions, condensable substances such as oil vapor, instrument distortion, abnormal pump operation, etc. When the leakage is large, the exhaust port can see white Steam. There are more bubbles at the oil mark, the hand can feel the exhaust pressure on the exhaust port. The low-level exhaust valve has more air bubbles on the surface. The power will increase .At this time, you should first check whether the air-ballast valve Off. Because the new pump factory in each of the pump measured the ultimate pressure, so if the leakage phenomenon, the pump port and piping, valves, containers one by one inspection. Outer shaft seal failure, the oil cup oil-free, bulkhead leak Gas leakage can also cause high pressure residue pump leakage can be caused by the pump movement gap, exhaust valve seat plane, the exhaust valve sealing surface, the inner shaft seal, pump cover plane, intake pipe, gas valve seals Wear, corrosion, bite will make the running gap increased.Oil blocking, open the fuel filler hole to listen, the pump noise will be lighter, in the case of a good seal, if the hand on the exhaust port has been sucked feeling, Exhaust valve may fail. If the pump oil is clean, long-term storage unused, can open the town valve to purify the pump oil vapor. If invalid, should check apricot meter. If the pump oil yellow and white has emulsified, the gas can be fully open the town, adjust the atmosphere to purify the operation, if necessary, the amount of gas into the pump port operation, can speed up the purification process. If other volatile gases or liquids are pumped, please change the oil in time and wash the oil tank if necessary. Some pumps, in the interstital airway will be deposited pump fluid, in order to obtain a good oil change effect, to find ways to drain the pump fluid. The ultimate pressure is measured using a seat compression oil silver vacuum gauge. Measured values ​​increase with a full pressure gauge such as a calibrated thermocouple gauge. Note the regulation of the thermocouple gauge to be paired. It is advisable to back up a calibration that is calibrated at the same time for comparison against any suspected contamination regulation. Increasing the ultimate pressure will reduce the pumping efficiency during high vacuum and the KC B gear pump will also raise the ultimate total pressure. Can refer to the above description to determine, check, deal with the decline in pumping efficiency and the ultimate pressure rise of the failure. (7) noise. Pump structure design, the motor and pump bearing noise, rotating pieces and other moving parts are smooth, too much oil into the fan, the noise generated by the transmission, a large intake, open air town operation, the oil pan and other pumps Loose parts, inequitable installation caused by vibration, will affect the pump noise. (8) fuel injection. To prevent the injection of fuel tank back to the oil hole size, location, sealing conditions, oil retaining plate design, installation, exhaust part of the mist reducer, oil cap, gas separator, the level of oil into the oil The size of the 2CY gear pump will affect the pump fuel injection, pump open air pumping, direct pump exhaust port of the air flow rate can be as high as 30m / s, blowing the oil surface, the pump circulating oil and airflow zone The oil will test the measures to prevent fuel injection.

The round strips (round cords) are with the protective shock-absorbing function. We process the rubber into round strips or round cords with different materials; NBR, EPDM, Neoprene, Viton and Silicone. Therefore we offer a round cord in the right quality for every possible application

Our O-Rings are both cost-effective and perform highly in almost every environment. No matter if you need metric or inch, standard or custom-made O-Rings – any size of O-Ring seals is available – including giant O-Rings using our Fleximold?process. Our rubber O-Rings are made of EPDM, FKM, NBR, HNBR, as well as our proprietary FFKM.Special products apart from rubber O-Rings such as O-Rings in PTFE based Turcon? material and Wills Rings

Round Rubber Strips

Round Rubber Strip,Round Rubber Strips,Fluoro Silicone Rubber Strip,Adhesive Round Rubber Strips

Shenyang Guide Rubber Products Co.,Ltd , https://www.guiderubber.com