Sliding valve, rotary vane, claw-type vacuum pump
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What are the advantages and disadvantages of each of the above three types of pumps? I need an extreme vacuum of 100 Pa now, with a pumping rate of 200 cubic feet per hour! During certain stages of the process, the inlet pressure can be relatively high, and the amount of air drawn in is large for a period of time (it’s not yet known how long this will last; it is desired to use an inlet pressure that allows for high values over an extended period)
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Do you know anything about claw pumps? According to the manufacturer, it seems to have been in use for not long, so it’s not very reliable! Have you used such pumps before? Come and introduce yourself!
I recommend that the poster choose a dry screw vacuum pump. Dry screw vacuum pumps are efficient and energy-saving, resistant to corrosion, do not cause pollution, and are less likely to get stuck; claw pumps, on the other hand, tend to get stuck easily. Li Xiaoli, Taizhou Xingguang Vacuum
The claw pump was produced in 1996. Then it was gradually applied in the aerospace and pharmaceutical industries. I work on claw pumps; the first claw pump in China was invented by our CEO, Mr. Xu. If you have any questions, you can ask me.
A single claw pump can achieve 3 Pa, while a typical three-stage pump reaches around 100 Pa.
Claw-type dry vacuum units, developed and produced by Zibo Ningsen Vacuum Equipment Technology Co., Ltd.; contact number: 13969331339
Also, seek information on these vacuum pumps~
1. Water ring vacuum pump Although it belongs to the category of rough vacuum pumps, the water ring vacuum pump still holds a significant market share in China’s industries such as petroleum, chemicals, power generation, light industry and textiles, papermaking, and pharmaceuticals. Abroad, water ring pumps account for 14% of the total vacuum pump market, second only to dry pumps. Since most water ring pumps are made of castings, the processing requirements are not high, and they are labor-intensive products; therefore, domestic water ring pumps have a price advantage. The key is to improve the design, reduce size and weight, increase efficiency, and lower energy consumption. 2. Sliding vane pump The sliding vane pump is a type of oil-sealed vacuum pump. Due to their durability and reliability, slide valve pumps are used as pre-stage pumps in various vacuum furnaces, coating machines, as well as equipment for drying and impregnation both domestically and internationally. However, slide valve pump castings are heavy, requiring substantial processing effort. 3. Direct-drive rotary vane pump As vacuum technology continues to be utilized in more and more applications, the demand for direct-drive rotary vane pumps is increasing. Due to the large number of such pumps, the processing and assembly workload is substantial, and the price is very low. Domestic small and medium-sized direct-connected vane pumps have met technical requirements, and their prices are much lower than those of foreign pumps; therefore, they still hold a competitive advantage. The key is to address issues such as oil leakage from the shaft seals, as well as problems related to the quality of the vane materials and vacuum pump oil, in order to ensure that these direct-connected pumps maintain stable performance and reliable operation under high speeds and high temperatures. Additionally, it is necessary to further improve the ability of domestic direct-connected vane pumps to remove water vapor.
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It is still recommended to use oil-free screw pumps, as they have low maintenance costs and a low failure rate. If you have any problems with Chongqing Lantuo Vacuum, feel free to contact me at 13709421557