Reciprocating pump in chemical plant Vacuum pump is used to pump air from the equipment or production system to make the equipment or production system work under vacuum. The main function parameters of vacuum pump are: pumping rate, limit vacuum degree, shaft power and speed, etc. The pumping rate of vacuum pump refers to the volume of gas that can be pumped out in unit time (m3 / h). The limit vacuum degree refers to the vacuum degree that the pump can reach. The vacuum pumps commonly used in chemical production are: reciprocating vacuum pump, water ring vacuum pump and eruption pump. Vacuum pump is characterized by a large pressure ratio. For example, in order to reach 95% vacuum, the nominal pressure of suction is 0.005MPa, while the exhaust pressure is 0.1MPa, and the pressure ratio is 20. Because of the large pressure ratio, the gas in the residual clearance volume will occupy a large volume after expansion, which greatly reduces the suction volume and the useful utilization rate of the cylinder is very low. In order to deal with the above problems, several grooves are generally opened on the cylinder wall at both ends of the cylinder, which are longer than the thickness of the piston. When the piston works to the dead center position, it is used to balance the pressure of the cylinders on both sides of the piston. For example, when the piston works to the left dead center, the exhaust of the left cylinder is finished, and the residual gas with high pressure in the clearance volume is left, and the suction in the right cylinder is finished, and the pressure is low. Because of the connection effect of the groove, the gas pressure in the clearance volume of the left cylinder decreases. In this way, when the piston returns to work, the volume occupied by the expansion of residual gas is greatly reduced, and the suction volume is increased. The same is true of the piston working to the right dead center. [url=https://www.evpvacuum.com/cl-sereis-cone-liquid-ring-vacuum-pump.html]CL Sereis Cone Liquid Ring Vacuum Pump[/url] [url=https://www.evpvacuum.com/zg-series-roots-blower.html]Roots Blowers[/url] [url=https://www.evpvacuum.com/p-en-70-ZJ_Roots_Vacuum_Pump.html]Roots Vacuum Pump[/url]posted in Outros
Best posts made by wyb2020
This user hasn't posted anything yet.
Latest posts made by wyb2020
Reciprocating pump in chemical plant
Selection of vacuum systemSelection of vacuum system Under its working pressure, the vacuum pump should be able to discharge all the gas in the process of vacuum equipment process, and recognize the vacuum volume of the system. Check the time required to acknowledge the required vacuum, the flow resistance and leakage of the vacuum pipe. Considering the requirement of vacuum degree, adhere to the pumping rate of vacuum demand under certain process requirements after reaching the required vacuum degree; correctly combine the vacuum pump and recognize the appropriate stage ratio between the main pump and the previous stage pump; when planning the vacuum pipeline, the short and thick pipeline should be selected as far as possible, and the general pipe diameter should not be less than the inlet of the true empty pump. In the planning of the vacuum system, the sealing performance of the system should be carried out to reduce the leakage rate of the system. Appropriate sealing data should be selected. The practical pumping volume flow of liquid ring vacuum pump is related to the working liquid. The higher the working fluid is, the higher the steam partial pressure is The worse the condensing effect of the steam at the inlet of the pump is, the smaller the volume flow of the vacuum pump is. It is suggested to select the working fluid with low full vapor pressure. The temperature of the working fluid should be controlled together. As for the gas with high freezing point, such as glycerol, octamethylcyclotetrasiloxane and hexamethyltrisiloxane, etc., should be removed. In order to avoid these gases from entering roots pump and agglomerate and accumulate, it is necessary to move the temperature of roots pump, such as heating nitrogen; In the vacuum system planning, new skills should be selected to achieve active control and interlock protection. [url=https://www.evpvacuum.com/oil-free-vacuum-pump-in-tobacco-products.html]Oil Free Vacuum Pump In Tobacco Products[/url] [url=https://www.evpvacuum.com/how-to-improve-the-pumping-speed-of-rotary-vane-vacuum-pump.html]How To Improve The Pumping Speed Of Rotary Vane Vacuum Pump[/url] [url=https://www.evpvacuum.com/oil-free-vacuum-pump-in-saccharification-process.html]Oil-Free Vacuum Pump In Saccharification Process[/url]posted in Outros
General structure of vacuum pumpGeneral structure of vacuum pump Vertical structure of the intake and exhaust port horizontal settings, assembly and connection of the pipeline are more convenient. However, the center of gravity of the pump is high, and the stability is poor at high speed operation, so this type of pump is mostly used for small pumps. The air inlet of horizontal pump is in the upper part and the exhaust port is in the lower part. Sometimes, in order to facilitate the installation and connection of vacuum system pipeline, the exhaust port can be connected from the horizontal direction, that is, the inlet and outlet directions are perpendicular to each other. At this time, the exhaust port can be opened from the left or right directions. In addition to one end of the exhaust pipe, the other end is blocked or connected with a bypass valve. This kind of pump has low center of gravity and good stability at high speed. General large and medium-sized pumps use this structure. The two rotor shafts of the vacuum pump are installed vertically with the horizontal plane. This structure is easy to control the assembly clearance, the rotor assembly is convenient, and the pump occupies a small area. However, the center of gravity of the pump is high and the gear assembly and disassembly is inconvenient, and the lubrication mechanism is relatively complex. [url=https://www.evpvacuum.com/cl-sereis-cone-liquid-ring-vacuum-pump.html]CL Sereis Cone Liquid Ring Vacuum Pump[/url] [url=https://www.evpvacuum.com/zg-series-roots-blower.html]Roots Blowers[/url] [url=https://www.evpvacuum.com/p-en-70-ZJ_Roots_Vacuum_Pump.html]Roots Vacuum Pump[/url]posted in Outros
What do you know about sludge pump?As an enterprise specializing in the production of sludge pump and sludge pump, we have produced high-quality products, but if we can't sell them, no one knows the excellence of our products, our production will be meaningless, so how to sell our products is a problem we need to solve. In the present era, products are never lacking. What is lacking is the market. To sell products, we need marketing, and sales is a part of marketing. For example, selling sludge pump, how to sell to customers, we should pay attention to a strategy. The process of sales is also a process of interpersonal communication. Through this, your interpersonal network and the amount of information will be more and more large, which provides a huge market opportunity for your sales. Sales should pay attention to methods and strategies, not reckless, be good at summarizing, learn sales skills, understand the hearts of customers, where are the real needs of customers? Only really understand the customer, can we better communicate with him, meet his needs, and then sell the product to him. Related products: [url=https://www.ht-guide.com/brazing-machine/Vacuum-Brazing-machine-for-PCD-diamond-tools.html]Vacuum Brazing Machine For PCD Diamond Tools[/url] Other related products: [url=https://www.evpvacuum.com/liquid-ring-vacuum-pump-working-principle.html]Liquid Ring Vacuum Pump[/url]posted in Outros