Resistance to acid and alkali chemical pump flange knowledge comprehensive introduction

Resistance to acid and alkali chemical water pump is of strong acid in chemical production, strong alkali and corrosive liquid conveying a chemical water pump, when installation and alkali chemical pump is used, the need to configure the valves and flange connection, the flange type on the market now there are many kinds of, in the process of choose suitable flange, flange, the first thing to understand here know about flange knowledge comprehensive introduction: a, what is the flange? Flange is a kind of disc parts, more common in the pipeline engineering, the flange is used in pairs. In pipeline engineering, the flange is mainly used for pipe connection. In need of connecting pipes and all kinds of installation of a flange, the low pressure pipe flange can use silk, the use of more than 4 kg of pressure welding flange. By sealing point between two pieces of flange and bolt fastening. Different stress of flange bolts with different thickness and use different. When water water pump and valve, and pipe connection, the local equipment, also made the corresponding flange shape, also known as flange connection. Where there are two surfaces in the surrounding use of bolt connection closed connection parts at the same time, generally called & other; Flange & throughout; , such as ventilation pipe connections, this kind of parts can be called & other; Flange parts & throughout; 。 But this connection is only a partial equipment, such as flange connection and water pumps, is bad call pumps & other; Flange parts & throughout; 。 Relatively small, such as valve can call & other; Flange parts & throughout; 。 Second, what is the use of the education of the flange? Flange is used for locating: such as oil cylinder flange installation, there is a kind of installation method is called is a cuboid like play four symmetrical holes all round, there is a big hole is the same as the diameter of cylinder, the rectangle set on the cylinder between them can be welded together after the other way, oil cylinder is linked to other things on the rectangle around four holes connection, the rectangle can be called the flange. How three, flange and pipe welding them together in what place? Many flange classification. Generally with flat flange, butt welding flange ( Long neck flange) , lap joint flange, etc. Low pressure, used in flat welding flange is used to weld, both sides welding, welding depth from the flange sealing surface 2 - 5 mm, butt welding flange butt weld can be directly, without welding lap joint flange bolt connection. Can live flange is activity of flange, generally is matching on the water supply and drainage fittings ( Expansion joints in common) Manufacturer, factory will have a flange on both ends of the expansion joints, directly with the engineering of piping, equipment, bolting. Four, what is a way of connecting flange? Flange connection is the two pipes, fittings or equipment, fixed on a flange, a first between the two flanges, plus the flange gasket, bolt fastening together, complete the connection. Some pipe fittings and equipment have been bringing flange, is also belongs to the flange connection. Flange threaded connection ( Screwed) Flange and welding flange. Low pressure small diameter wire connect flange, high pressure and low pressure of large diameter used welding flange, the thickness of the flange and the connection of different pressure bolt diameter and the number is different. According to the different levels of pressure, flange gasket also have different material, from the low pressure asbestos pad, high-pressure asbestos pad to metal pads. Flange connection is convenient to use, can withstand greater pressure. In industrial piping, flange connection is widely used. Within the family, pipe diameter is small, and it is low voltage, invisible flange connection. If in a boiler room or production site, the flange connection of pipes and equipment are everywhere. Flange connection is the two pipes, fittings or equipment, fixed on a flange, a first between the two flanges, plus the flange gasket, bolt fastening together, complete the connection. Some pipe fittings and equipment have been bringing flange, is also belongs to the flange connection. Pay attention to the connection of time especially when bolts to do all of the bolt is tight. Five, the difference between the flange and valve? Valve is the faucet of thing, or rather, the faucet is one of the valve. Can be turned on, water or gas can out; To close, the water will not flow. Home water taps are made with thread screw on the pipe, with some of the pipes, but the factory inside water or gas, the pressure is very high, with a threaded connection is too strong, direct welding or connect with other methods. The flange is one of the connection methods.
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