The selection, installation and use of asphalt pumps. The electric submersible pump used in motor wells must be selected according to its purpose, that is, the electric submersible pump with small flow and high lift should be selected for the oil supply of the pressure tank; The oil supply of the tower should be based on the size and lift of the oil tower, and a medium-flow electric submersible pump can be selected; for farmland irrigation, if the lift is suitable, try to choose a large-flow electric submersible pump. According to the specific conditions such as well diameter, oil output and sand content, the appropriate electric submersible pump specifications should be selected. The installation is carried out in accordance with the instruction manual, and according to the prescribed procedures and requirements. Strictly install in accordance with the specified head to prevent low head and over-flow from overloading the motor and burning the motor. The installation depth should generally ensure that the distance from the bottom of the electric pump to the bottom of the well is not less than 3 meters. When installing the electric pump, make sure that the entire cavity of the motor is filled with oil. After the electric pump is installed, do not turn it on immediately. First, check the power supply, starting equipment, instruments, etc. used, and make sure that it is correct before trial operation. After starting, check the voltage and current of the electric pump with a meter, and put it into work after everything is normal. Before starting each shift, check the power supply voltage and insulation resistance; after starting, check the working current and the operation of the oil pump, and solve the problem in time. It is strictly forbidden to run the electric pump with disease. The electric submersible pump should not be started and stopped too frequently. It cannot be restarted immediately after it is stopped. It must be restarted after the oil in the pipe has returned. If the electric submersible pump fails, first check whether there are any problems with the peripheral equipment, such as whether the power supply is normal, whether the oil level of the well drops too much, whether the pump pipe is leaking, etc. The pump can be lifted out of the well only after the inspection is correct. The submersible electric pump needs to be overhauled after two years of operation, and the worn parts should be replaced. Any repair of the electric pump should be sent to a professional repair station for repair, and fake or inferior parts cannot be replaced. Electric submersible pumps that have not been used for more than one year should be taken out of the well, and put into a dry, non-corrosive room after a thorough overhaul. Drain the oil in the motor to prevent rust and moisture.Selection, installation and use of asphalt pump

Asphalt pump manufacturers and suppliers

In terms of pump material and structure, if it is a non-corrosive liquid, carbon steel is used for pressure-resistant parts below 370°C, and 5% or 13% chromium steel is used above 370°C; for parts with low strength , cast iron can be used below 230 ℃. When the thermal expansion coefficients of the components of the components are not the same, the tight fitting parts will become loose, and the gap of the rotating sealing parts will become smaller and cause accidents. The pump casing with complex shape may cause accidents due to irregular expansion and deformation, so generally All take vertical divisions. When the temperature changes, the bolt tightening force of the pressure-resistant pump casing will change, and leakage will occur from the joint surface of the pump casing, so the joint surface must be used. If you use the sealing flat gasket of the horizontally split pump casing, when the bolt tightening force is loosened and the leakage starts, the gasket will be blown out, and there is a danger of high temperature liquid blowing out, so this gasket is not suitable for high temperature use..

The shaft seal of the thermal oil pump used to use gland packing, and now a mechanical seal device for high temperature has been developed. Since the wear of the sealing end face increases sharply with the increase of temperature, the heat resistance of the “O” and “V”-shaped gaskets is also a problem, so most of them take cooling measures for the shaft seal device, and the cooling method is to use the operating temperature The cooling liquid that does not evaporate at the bottom is used for external flushing or self-flushing. At the same time, a cooler is set in the flushing pipeline to cool the flushing liquid to 80-120 °C and then inject it into the mechanical sealing device. Cooling with self-flushing tends to condense high-viscosity media in the cooler during pump shutdown, so the cooler must be equipped with a steam line for heating. In addition, when the pump is stopped for warming up or self-flushing without a cooler, it is necessary to pay attention that the temperature of the shaft seal device cannot be too high. Once the heat resistance temperature of the mechanical seal is exceeded, even if the pump has stopped, it must be discharged from the After the check valve of the pipeline, the flushing liquid is drawn out for flushing.

Pump material: pump body cast steel. Gear shaft is alloy steel. Pump body has a complete heating jacket. Excellent heating performance.

The pump can also produce electric heating

Bitumen pump Capacity:29m3/h,Pressure:0.6Mpa , Material: Casing/Gears: CS

Inlet/Outlet:80/80 mm, Seal: Gland Packing, Motor power:11kw/1450rpm

Thermal oil pump Model:WRY65-40-200

Capacity:30m3/h,Head:48m, Material: Casing/Impeller: CS

Inlet/Outlet:65/40 mm, Seal: Gland Packing, Motor power:7.5kw/2900rpm

Take Saiken brand AODD PUMP as an example:

1 inch diaphragm pump, maximum capacity 57L/min, Max. Head: 70m, outlet pressure: 7bar, inlet and outlet size: 1″, air inlet: 1/4″, maximum particle size is 2.5mm