vacuum equipment

　　1) Adjust the pressure of unloading valve DA10, relief valve DB10 or DB20 to the minimum. 　　 2) Check in the slurry inlet valve and close the slurry outlet valve to the minimum, that is, the slurry flow rate of the pump is small at this time. 　　 3) Start the motor, slowly adjust the relief valve DB10 or DB20 to adjust the mud pressure to be about 0.1Mpa-0.2Mpa less than the required pressure. 　　 4) Slowly adjust the unloading valve DA10 until the unloading valve has pressure (that is, the pressure gauge corresponding to the unloading valve shows less than 0Mpa). 　　 5) If the state cannot be reached, adjust the unloading valve and the relief valve according to the above steps 3 and 4 until this state. 　　 6) After adjusting the unloading valve, tighten the nut. (Note: The pressure of the unloading valve should be zero at this time, if it is not zero, then slightly lower the pressure of the unloading valve, and the pressure will only be displayed when it reaches zero). 　　 ...

　 The basic characteristic of rainwater pumping station is large flow and small head, therefore. Axial-flow pumps are mostly used, and sometimes mixed-flow pumps are used. The general process flow of rainwater pumping station is as follows: Inlet pipe:'inlet gate well, grit tank, grid room, foretank, and catch basin' water outlet and one outlet pipe, outlet gate well and outlet. For combined pumping stations, the catch basin is generally sewage and rainwater combined, and the pump It can be set separately or shared. Basic types of pump rooms The rainwater pump house (combined pump house) is generally built together with the collection tank and the pump. According to whether the ditch pool and the pump are separated by unsuitable partition walls, they are divided into "dry room" and "wet room". The "dry room" pump room (as shown in Figure 5. Lo) is generally divided into three floors. The upper floor is the motor room. Install motors an...

 Performance range: 2CY gear oil pump is suitable for conveying lubricating oil with viscosity of 5 × 10-6 ～ 1.5 × 10-3m2 / S (5-1500cst) or other liquids similar to lubricating oil and used in hydraulic rotating system without solid particles and fibers, without corrosiveness, temperature not higher than 80 ℃. LB refrigerator special gear pump: suitable for conveying no solid particles and fibers, no corrosion, temperature not higher than 80 ℃, viscosity 5 ~ 1500st Ch y gear pump: ch, CHY gear pump is used to transport the viscosity below 200 ° e (1500 MPa. S) of mechanical oil, turbine oil and other media with similar lubrication performance and properties, and the temperature is not higher than 120 ℃. K1p gear pump: pump displacement: cm3 / R. High efficiency, low energy consumption, convenient operation, easy maintenance, strong structure and long service life. HGP type gear pump: QT internal gear pump internal gear contact smooth, silent continuous operation. Its ...

 Analysis on the use stage of well furnace There are several stages in the operation of a well furnace: Furnace installation, exhaust and temperature rise: 1, after the well furnace to the temperature insulation 0.5~1h, make the temperature uniform, into the parts, hanging parts should be more than 10mm gap, to ensure that the gas unblocked. 2, the parts must be placed in the effective heating zone of the furnace tank, the upper end should not exceed the exhaust pipe, the lower end should keep a certain distance from the intake pipe, after installing the furnace exhaust time is about 20~60min. 3. The sample should be placed in three different positions: upper, middle and lower. 4, after the installation of the furnace, should immediately send infiltration agent exhaust (ethanol drops), when the temperature of the furnace to the specified temperature, in the outlet of the exhaust gas, such as the flame does not point, should increase the amount of infiltration agent or ...

Always committed to the upgrading and transformation of liangbang pump and valve enterprises, Yongjia is the early origin of China's liangbang pump and valve industry. In the past, factors such as single product structure, small enterprise scale, no brand, poor information, and weak technical innovation ability have become the bottleneck restricting the rapid development of liangbang pump valve industry. "After more than 20 years of development, Yongjia liangbang pump valve gradually improves its quality in all aspects, and strives to seek new breakthroughs in the development of liangbang pump valve industry. At present, liangbang pump and valve industry production and manufacturing base has been established, which integrates product manufacturing, technological innovation, quality inspection, enterprise gathering and talent training. It has participated in the construction of several key projects, which has changed the overall pattern of China's liangbang pum...

What sealing requirements do vacuum pumps have to prevent oil leakage People who have used water ring vacuum pump know that the sealing of the equipment is a very important part of the process of use, must not be careless. If the sealing is done well, the vacuum drop can be avoided during use. If the seal work is perfunctory, then at some time the equipment will have a failure problem, resulting in its damage, not normal use, affecting our work efficiency. Under its working pressure, the vacuum pump should drain all the gas produced in the process of vacuum equipment in time. Correct combination of vacuum pumps. Because the vacuum pump has selective pumping, therefore, sometimes choose a pump can not meet the requirements of pumping, need several kinds of pump combination, complement each other to meet the requirements of pumping. For example, titanium sublimation pump has a high pumping speed on hydrogen, but cannot pump helium, while triode sputtering ion pump, (or di...