2014年12月24日星期三

Joint metal hose

Stainless steel metal hose joint effects first was the net sleeve are connected into integration, and the corrugated pipe, joint is also a metal hydraulic hose assembly and metal hose or other fittings, equipment connected components. It ensure that the medium in pipeline system in normal operation. Joint data usually with bellows, net sets of data, multiple stainless steel based. In order to decrease production cost, some of the larger diameter metal hydraulic hose fitting in the delivery of corrosion is not strong or non corrosive medium, joint can be used for carbon steel manufacturing; joint metal hose on the corrosive medium task conditions, corresponding measures if the description is adopted, and the medium to avoid the touch, can also choose carbon steel to manufacture. The layout mode of joint generally divided into spiral, flange type and fast type three categories:
1, screw type: diameter 50 mm below the joint metal hose, high pressure in an operation under the condition of multi thread based on, when tightening the threaded in the future, close cooperation of two joints on the inner and outer taper surface, complete seal. The cone angle is usually 60 degrees, 74 degrees is also useful. The layout, good sealing, but the device when necessary ensure the concentricity of the two docking part. In order to deal with engineering practice is often seen repeated disassembly and assembly and not easy to be concentric and other issues, will also be described as conical and ball head joint cooperation.
2, the flange disc: diameter for the joint metal hose is more than 25 mm, often in an operation under pressure, with flanged mainly, which cooperate to mortise way seal. Along the radial change, also capable of sliding along the axial direction of the looper flange connection of two bodies in the fastening bolt tension effect. The layout of the sealing function is good, but the processing difficulty, simple sealing surface bumps. Special occasions quick release in need, can cut the fastening bolt through hole, made quick detachable flange.
3, express: diameter for the joints of various metal hose 100 mm below the condition of using requirements, in rapid loading and unloading, usually choose fast type. O shaped it commonly used fluorine plastic or special rubber seal ring seal. When the handle to move the view must be in the future, the equivalent of multiple threads of fingers locked; the O shaped sealing ring is pressed more tightly, the sealing function is better. The layout in the fire, war and other necessary for fast loading and unloading is most suitable for the occasion. In seconds, not to be matched with any special tools, can butt or open a group of joint.

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