[Asia Fluid Network News] Slide valve vacuum pump in the use of more and more extensive, each type also has its own characteristics, a wide range of valve-type vacuum pump. One of the most important is: H150 spool vacuum pump is mainly out of the general gas, H-valve vacuum pump for vacuum smelting, MH-2 spool valve vacuum pump is mainly a high vacuum pump. These three products are an important part of the entire slide valve vacuum pump. Sliding Vane Vacuum Pump H150 Sliding Vane Vacuum Pump: This type of pump is a sliding valve mechanical vacuum pump. It is one of the vacuum pumping equipment for pumping out general gas or gas containing small amount of condensable vapor (gas ballast should be used). Geometric pumping speed of 150 L / s, the ultimate pressure of 1Pa (8 × 10-3 Torr). For vacuum smelting, vacuum drying, vacuum coating, vacuum impregnation and other vacuum operations. It can be used alone, but also as a foreline pump for other vacuum pumps, but not for pumping from one container to another as a transfer pump. H Spool Vacuum Pumps: Performance Specification for H-Spool Vacuum Pumps: Geometric pumping speed is 150 liters / sec and the ultimate pressure is 1 Pa (8ⅹ10-3 Torr). For vacuum smelting, vacuum drying, vacuum coating, vacuum impregnation and other vacuum operations. The H-spool vacuum pump can be used alone or as a foreline pump for other vacuum pumps, but not for pumping from one container to another. When pumping high oxygen content, explosive, corrosive to ferrous metals, the chemical reaction of vacuum oil, water, dust and other gases, additional devices should be attached. MH-2 slide valve vacuum pump: can be pumped to the vacuum below 1.33Pa, it is suitable for a variety of high vacuum requirements. The pump mechanical movement system is the introduction of international advanced technology made. Use the world's leading sports technology rotary pressure air principle and combined with Roche's Law (oil splash lubrication) and Newton's law of inertia consistent, and the use of dual cooling and lubrication. The power is only half of the W series (reciprocating pump) and X series (vane pump) (pumping speed is the same), with the characteristics of reliable balance, low noise, small power consumption and long service life. Sliding valve vacuum pump body and other major parts are made of wear-resistant vacuum casting, made in its surface treatment and processing, the center of a folder to complete, it is characterized by high precision, wear small, less maintenance. It is widely used in chemical, food, electronics, vacuum plating 镆, paint, medicine and other industries. Understand its type, the use efficiency of the vacuum pump and improve the quality of products of great significance, relevant topics deserve the attention of professionals. Related articles: Sliding valve vacuum pump advantages and disadvantages Sliding valve vacuum pump parameters
Hydraulic power expansion external casing packer is mainly composed of the expansion sleeve, base pipe (casing), valve joints, collar, sub and other components which can be directly connected with the casing string.
There are are two structures of valve joint, one is radial valve system, and the other is axial valve system, radial valve system is composed of a set of three valves (open valve, single-flow valve, pressure limiting valve) radial arrangement of the axial valve system is composed of a Set of axial double valve (open valve, pressure limiting valve) composition.
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