The operating stress of vacuum pump really should satisfy the requirements of restrict vacuum and doing work stress of vacuum equipment. For example, vacuum coating needs a vacuum degree of one × 10-5mmhg, and the vacuum degree of the chosen vacuum pump shall be at the very least five × 10-6mmhg. Typically, the vacuum degree of the pump is half to a person order of magnitude higher than that of the vacuum devices.
Select the working place of vacuum pump the right way. Every type of pump has a specific functioning strain range, for instance: the diffusion pump is 10-three ~ 10-7mmhg. In these kinds of a wide force assortment, the pumping speed of the pump changes with the force, and its steady working strain array is five × 10-4 ~ 5 × 10-6mmhg. Consequently, the doing the job position of the pump need to be selected in this variety, and it are not able to be permitted to work for a extensive time underneath 10-8mmhg. Another case in point is that titanium sublimation pump can perform at ten-2mmhg, but its operating strain ought to be fewer than 1 × 10-5mmhg.
Under its doing work strain, the vacuum pump must be able to discharge all the fuel produced in the procedure of vacuum tools.
Incorporate the vacuum pump effectively. Since of the selective pumping of vacuum pump, from time to time selecting a single pump can not meet the pumping demands. Many pumps need to have to be mixed to health supplement each individual other to meet up with the pumping requirements. For instance, the titanium sublimation pump has a incredibly higher pumping pace for hydrogen, but it simply cannot pump helium, even though the a few pole sputtering ion pump (or the two pole asymmetrical cathode sputtering ion pump) has a certain pumping speed for argon, and the mix of the two will make the vacuum gadget get a superior vacuum diploma. In addition, some vacuum pumps simply cannot perform under atmospheric force and need pre vacuum some vacuum pumps require pre stage pumps due to the fact the outlet tension is decreased than atmospheric strain, so they will need to be mixed for glove box use.
Prerequisites of vacuum gear for oil pollution. If the devices is strictly oil-totally free, several oil pumps really should be chosen, these kinds of as: drinking water ring pump, molecular sieve adsorption pump, sputtering ion pump, small temperature pump, etcetera. If the needs are not demanding, oil pump can be picked, and some anti oil pollution measures, these kinds of as chilly trap, baffle, oil lure, etcetera., can also meet the prerequisites of clear vacuum.
Know the composition of the extracted gasoline, together with no condensable vapor, particle dust, corrosiveness, and so on. When selecting a vacuum pump, it is required to know the fuel composition and pick out the corresponding pump for the extracted gas. If the gasoline consists of steam, particles and corrosive gasoline, auxiliary devices, such as condenser, dust remover, etc., shall be put in on the air inlet pipeline of the pump.
How does the oil vapor discharged from the vacuum pump affect the setting. If the environment is not allowed to be polluted, the oil-totally free vacuum pump can be picked, or the oil vapor can be discharged to the out of doors.
No matter whether the vibration made through the procedure of vacuum pump influences the procedure and atmosphere. If the system is not allowed, the pump without having vibration shall be selected or anti vibration steps shall be taken.
Cost, operation and maintenance cost of vacuum pump
Select the working place of vacuum pump the right way. Every type of pump has a specific functioning strain range, for instance: the diffusion pump is 10-three ~ 10-7mmhg. In these kinds of a wide force assortment, the pumping speed of the pump changes with the force, and its steady working strain array is five × 10-4 ~ 5 × 10-6mmhg. Consequently, the doing the job position of the pump need to be selected in this variety, and it are not able to be permitted to work for a extensive time underneath 10-8mmhg. Another case in point is that titanium sublimation pump can perform at ten-2mmhg, but its operating strain ought to be fewer than 1 × 10-5mmhg.
Under its doing work strain, the vacuum pump must be able to discharge all the fuel produced in the procedure of vacuum tools.
Incorporate the vacuum pump effectively. Since of the selective pumping of vacuum pump, from time to time selecting a single pump can not meet the pumping demands. Many pumps need to have to be mixed to health supplement each individual other to meet up with the pumping requirements. For instance, the titanium sublimation pump has a incredibly higher pumping pace for hydrogen, but it simply cannot pump helium, even though the a few pole sputtering ion pump (or the two pole asymmetrical cathode sputtering ion pump) has a certain pumping speed for argon, and the mix of the two will make the vacuum gadget get a superior vacuum diploma. In addition, some vacuum pumps simply cannot perform under atmospheric force and need pre vacuum some vacuum pumps require pre stage pumps due to the fact the outlet tension is decreased than atmospheric strain, so they will need to be mixed for glove box use.
Prerequisites of vacuum gear for oil pollution. If the devices is strictly oil-totally free, several oil pumps really should be chosen, these kinds of as: drinking water ring pump, molecular sieve adsorption pump, sputtering ion pump, small temperature pump, etcetera. If the needs are not demanding, oil pump can be picked, and some anti oil pollution measures, these kinds of as chilly trap, baffle, oil lure, etcetera., can also meet the prerequisites of clear vacuum.
Know the composition of the extracted gasoline, together with no condensable vapor, particle dust, corrosiveness, and so on. When selecting a vacuum pump, it is required to know the fuel composition and pick out the corresponding pump for the extracted gas. If the gasoline consists of steam, particles and corrosive gasoline, auxiliary devices, such as condenser, dust remover, etc., shall be put in on the air inlet pipeline of the pump.
How does the oil vapor discharged from the vacuum pump affect the setting. If the environment is not allowed to be polluted, the oil-totally free vacuum pump can be picked, or the oil vapor can be discharged to the out of doors.
No matter whether the vibration made through the procedure of vacuum pump influences the procedure and atmosphere. If the system is not allowed, the pump without having vibration shall be selected or anti vibration steps shall be taken.
Cost, operation and maintenance cost of vacuum pump