Screw-type oil-free dry mechanical vacuum pump is the use of gear synchronous reverse rotation of the intermeshing and non-contact left and right screws for high-speed rotation, the use of the pump housing and intermeshing spiral spiral groove separated into multiple spaces to form Multiple stages, the gas is transported in equal slots (cylindrical pitch), but without compression, only the helical structure at the very end of the screw has a compressive effect on the gas. Screw pressure gradient between the various levels can be formed to disperse pressure and improve the compression ratio. The gap and pump speed of each department have a great influence on the performance of the pump. Screw in the design of the various parts of the gap, we must consider the expansion, processing and assembly accuracy and working environment (such as the removal of dust-containing gas, etc.). The pump and Roots vacuum pump without exhaust valve. This type of pump, if used with a suitable simpler screw profile, is simple to manufacture, guarantees high machining accuracy and is easily balanced.
Electromechanical Equipment
Electromechanical products refer to the sum of mechanical and electrical equipment. With the progress of science and technology, the varieties of mechanical and electrical products in the traditional sense have been greatly developed. In modern technology and management, mechanical and electrical products generally refer to mechanical products, electrical products, electronic products, mechatronics products and their parts, accessories and accessories. The above-mentioned concept of mechanical and electrical products is gradually formed in the management work and is an established concept.
Mechanical and electrical equipment generally refers to large-scale production equipment with electric power control, basically designed without production industries such as lathe, milling machine, air compressor, packaging machine, freezing machine, coal drilling platform, injection molding machine, etc.
There are many kinds and wide range of mechanical and electrical products. In the Handbook of Import and Export Statistics of Mechanical and Electrical Products (1999 Edition) compiled by the Import and Export Department of Mechanical and Electrical Products of the Ministry of Foreign Trade and Economic Cooperation, the catalogue of mechanical and electrical products is listed, and it is clear that the shell of the fan motor of mechanical and electrical products not only has a protective function, but also serves as a component mounting frame. In addition, some special types of motor housings also have the functions of heat dissipation or sound insulation.
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Electromechanical products refer to the sum of mechanical and electrical equipment. With the progress of science and technology, the varieties of mechanical and electrical products in the traditional sense have been greatly developed. In modern technology and management, mechanical and electrical products generally refer to mechanical products, electrical products, electronic products, mechatronics products and their parts, accessories and accessories. The above-mentioned concept of mechanical and electrical products is gradually formed in the management work and is an established concept.
Mechanical and electrical equipment generally refers to large-scale production equipment with electric power control, basically designed without production industries such as lathe, milling machine, air compressor, packaging machine, freezing machine, coal drilling platform, injection molding machine, etc.
There are many kinds and wide range of mechanical and electrical products. In the Handbook of Import and Export Statistics of Mechanical and Electrical Products (1999 Edition) compiled by the Import and Export Department of Mechanical and Electrical Products of the Ministry of Foreign Trade and Economic Cooperation, the catalogue of mechanical and electrical products is listed, and it is clear that the shell of the fan motor of mechanical and electrical products not only has a protective function, but also serves as a component mounting frame. In addition, some special types of motor housings also have the functions of heat dissipation or sound insulation.
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Pump is a vertical structure, the intake port above, the exhaust port in the middle, the lower part of the motor and lubricating oil pool. Screw rotor was hollow, cantilever support structure. Synchronous drive gear is located below the bearing support. The variable frequency motor is connected with the active rotor through the coupling. The pump gas path is shorter, and the vertical structure of the exclusion of dust-containing gas is more favorable. Pump housing with water cooling, pump maintenance is also convenient.