Which roots pump is good, which screw pump is of good quality and cheap, the most expired ordinary m

Of course, the first choice to buy vacuum pumps is Busch, the products are purely imported, the process is rigorous, the quality is supreme, stable and reliable, sturdy and durable, it is a leader in the industry, and is widely praised and favored by users. The Busch Cobra dry screw vacuum pump is used efficiently in a wide range of industrial sectors, and the variable pitch and free venting greatly increase the pump's ability to handle liquids and dusts. Its unique temperature distribution provides corrosion resistance.

The optimized efficiency reduces the heat load and thus extends the life of the pump. If you feel that the above is not detailed enough, you can consult Busch Vacuum Equipment International (Shanghai)****. Vacuum Solutions International (Shanghai) and Vacuum Vacuum Technologies (Shanghai) are wholly-owned subsidiaries of Vacuum Solutions in China

Each rotor is supported by two bearings, and a pair of synchronous gears are used to keep the relative position of the two rotors unchanged at all times, and there are gaps between the rotor and the rotor, the rotor and the pump body, and the rotor and the side cover, so that there is no friction in the working cavity and no lubrication is required. The support of the pump rotor adopts a reliable anti-backlash structure, the rotating parts are carefully balanced, and high-precision helical gears are adopted, so that the movement is stable, the noise is low, the use is more reliable, and it can operate for a long time under high pressure difference. The dynamic seal adopts the company's patented technology, and adopts imported oil seal to control the runout of the shaft seal, so that there is no oil leakage at the shaft seal.

This type of pump is equipped with a self-weight valve between the air inlet and the exhaust port, and its function is that when the pressure difference between the exhaust port and the air inlet port exceeds the valve's own weight, the valve will be automatically opened. This pressure difference is the maximum pressure difference that the pump can operate reliably. Therefore, the roots pump with relief valve has the function of automatic overload prevention.

Features: ZJP roots vacuum pump has a large pumping rate at low inlet pressure, and has automatic anti-overload function. Due to the use of CNC machining center processing, the pump body, both sides of the cover, between the two end covers are sealed by O-ring sealing, the cylindrical pin positioning, the parts are interchangeable, and the maintenance is convenient.

Roots pumps cannot be used alone, only tandem backing pumps can be used. Different vacuum pumps can be used as backing pumps, such as progressive cavity pumps, oil seal pumps, liquid ring pumps, etc. It is worth mentioning that when the progressive cavity pump and liquid ring pump are used as the backing pump, it is especially suitable for the occasion where a large number of suspicious gases need to be pumped out.

The latest ranking of progressive cavity pump brands in 2017.

1.Zhongcheng - Zhongcheng brand belongs to Shanghai Zhongcheng Pump Industry Manufacturing, the brand was rated as "China's top ten famous brands in the pump industry" in the national product social survey and evaluation work. In August 2010, Zhongcheng water pump products were recommended as "China's independent innovation famous products" and "national quality assured products".

2.Fa Xing - Fa Xing brand belongs to Zhejiang Dongyang City Fa Xing Electromechanical ****, its predecessor is Dongyang City Screw Pump Factory, since 1984, has been continuously rated as the gold to eliminate Hua City contract and trustworthy unit, in 1986 was named "Star Enterprise" by Jinhua City, in 1988 won the Jinhua City special product "Golden Dragon Award", in 1993 won the third prize of the provincial ** scientific and technological progress, in 1994 won the second prize of scientific and technological progress of the provincial machinery industry plant, In 1995, it was recommended as the 17th batch of energy-saving products by the Ministry of Machinery Socks. In 2001, it was approved to have the right to import and export.

3.Yijia - Yijia brand belongs to Botou Yijia Pump Industry (formerly Hebei Botou Gear Pump Factory), the company is the backbone enterprise of China Pump Industry Group, the former Ministry of Machinery Industry designated professional production plant, domestic gear oil pump industry leading enterprises. The factory has passed the ISO9001-2000 international quality system certification, and passed the type approval of China Classification Society, obtained the type approval certificate of marine products, and also passed the fishery inspection certification of the Fishery Vessel Inspection Bureau of the People's Republic of China.

4.Aote - Aote brand belongs to Shanghai Aote pump and valve manufacturing, the company is a joint venture, is a comprehensive enterprise dedicated to the research, development, manufacturing and sales of fluid products. In 2000, Ott company successfully introduced a variety of types of technology from Germany, through absorption, transformation, concentration of its own advantages, so that the product continues to optimize, innovation, and further established the technical advantages in the same industry.

5.Kaimei - Kaimei brand belongs to Yongjia County Kaimei pump industry, the company is a professional production and sales of pumps enterprises, the company has strong technical force, advanced production technology, complete testing equipment, reliable quality, scientific management, a wide variety.

6.Yangtze River - Yangtze River brand belongs to Yongjia County Yangtze River Pump Industry, the company is specialized in the production and sales of various types of pumps and ancillary products of the enterprise, the company is located in Wenzhou Oubei, with the reputation of "the hometown of pumps and valves". The company has strong technical force, advanced production technology, complete testing equipment, reliable quality, scientific management and a wide variety.

A roots pump is a volumetric rotary positive displacement pump that consists of two intermeshing impellers (roots impellers). The two impellers are driven by synchronous gears that rotate at high speed in the pump casing, and because of the small gap between the impellers, the gas sucked in by the pump can be sealed within the impeller gap and thus sucked in and compressed. By continuously rotating the impeller, the gas is compressed, resulting in a gas flow that is eventually discharged to the outlet of the pump.

Roots pumps are mainly used to suction gases such as air, nitrogen, carbon dioxide, etc. Due to its simple structure, oil-free lubrication, good durability, low noise, no pollution and other characteristics, it is widely used in industry, chemical industry, food, medical and other fields.

It should be noted that roots pumps have high requirements for tightness, because during operation, although the gap between the impellers is small, there can still be gas leaks. Therefore, it is necessary to pay attention to the tightness when using roots pumps to ensure the normal operation of the pump.

<> roots pump, divided into belt drive and gear reducer drive two forms. This pump has the characteristics of low speed, high efficiency, small size, large flow rate, low power consumption, strong self-priming ability, no oil drainage, and easy to use. It can be widely used for conveying stones.

Oil and petroleum products (gasoline replaceable copper pump blades) and the plant conveys a wide range of oils and liquids. Such as **, paint, lubricating oil, glass glue, oleic acid, toothpaste and light alkaline (soap processing) liquid, etc.; Food processing can convey a variety of things.

Liquids, such as soy milk, yeast, syrup, etc. The loading and unloading of various tankers and tankers is fast, efficient, easy to use, and can work in forward and reverse rotation.

Roots vacuum pump refers to a kind of variable capacity vacuum pump that is equipped with two vane-shaped rotors that rotate synchronously in opposite directions, and there is a small gap between the rotors and between the rotors and the inner wall of the pump casing without contacting each other.

Roots pump is a vacuum pump without internal compression, usually the compression ratio is very low, so high and medium vacuum pumps need a backing pump, relying on a pair of vane-shaped rotors in the pump chamber synchronous and counter-rotating pushing action to move the gas and realize the vacuum pump for pumping.

What is a roots pump, the purpose of the roots pump, the advantages of the roots pump, vacuum pump, rotary vane pump, zj roots vacuum pump, the use of a pair of figure-8 rotors in the pump casing for constant velocity reverse rotation and suction and exhaust effect, each rotor is supported by two bearings, the use of a pair of synchronous gears, so that the relative position of the two rotors always remains unchanged, the rotor and the rotor, the rotor and the pump body, the rotor and the side cover have clearances, because there is no friction in the working cavity, no lubrication. The support of the pump rotor adopts a reliable anti-backlash structure, the rotating parts are carefully balanced, and high-precision helical gears are adopted, so that the operation is stable, the noise is low, the use is more reliable, and the long-term operation can be carried out under high pressure difference. The dynamic seal adopts the company's patented technology, and the pump adopts imported oil seal to control the runout of the shaft seal, so there is no oil leakage at the oil seal.

ZJ type roots vacuum pump, due to the use of CNC machining center processing, the pump body and the side cover, between the side cover and the end cover are sealed with "O" ring, cylindrical pin positioning, good parts interchangeability, easy maintenance, the pump adopts a air inlet, three exhaust port structure design, easy for users to install and use. Roots pump can not be used alone, only series backing pump can be used, can choose screw pump, oil seal pump, liquid ring pump as backing pump, it is worth mentioning that when the screw pump and liquid ring pump are selected as backing pumps, it is especially suitable for pumping out a large number of suspicious gases.

Cost-effective, you can learn about Qinde Electromechanical Technology (Suzhou) ****, which is a professional roots vacuum pump company. The company has rich technical experience, strong financial strength, professional technical personnel, with reasonable **, high-quality service, perfect after-sales, has won the recognition of our customers, welcome to consult!

First of all, popularize the knowledge of two types of vacuum pumps.

Water ring vacuum pump (referred to as water ring pump) is a rough vacuum pump, which can obtain an ultimate vacuum of 2000 4000pa, and a series atmospheric ejector can reach 270 670pa. The water ring pump can also be used as a compressor, called the water ring compressor, which is a low-pressure compressor, and its pressure range is 1 2 105pa gauge pressure.

Roots vacuum pumps. Since the roots pump is a vacuum pump with no internal compression, the compression ratio is usually very low, so high and medium vacuum pumps require backing pumps. In addition to the structure and manufacturing accuracy of the pump itself, the ultimate vacuum of the roots pump also depends on the ultimate vacuum of the backing pump.

In order to increase the ultimate vacuum of the pump, roots pumps can be used in series.

Therefore, the suction power should be the roots vacuum pump. But you can't say in general terms that it's better. Roots vacuum pump commonly used brands Pepsi, Jingong; Water ring vacuum pump commonly used brands in the South and the New Territories. I am an equipment installation project, and I commonly use both kinds of equipment, which I am familiar with, and I hope it will be useful to you.

Roots oil pump is composed of sock pump body, pump cover, shaft, front gear, rotor, packing, gland and other components, the pump has belt drive, gear reducer and frequency conversion motor drive three forms, can reverse the effect, the shaft is equipped with skeleton oil-resistant seal at both ends, and the middle is equipped with Huihui with oil drainage device to prevent air intake or oil leakage.