Pneumatic valve common connection form of introduction (2)

, this is the most frequently used pneumatic valve flanges. ） Smooth style: : using the combination of the surface shape can be divided into the following categories of pneumatic valve pressure is not high. Processing more convenient lenticular: high pressure of work, you can use a hard gasket mortise: larger plastic deformation can use washing machine, used in a wider range of corrosive medium, sealed. ） Trapezoidal groove: oval metal ring gasket in the use of work pressure, acuity kilogram per square centimeter of pneumatic valves, pneumatic valves or high temperature. Lens type: washing machine is the shape of the lens and metal production. For the working pressure or greater kg/cm2 pressure pneumatic valve, pneumatic valve or high temperature. ） O-ring style: this is a relatively new form of flange connection, with the appearance of the rubber sealing ring, and develops in the sealing effect, flat washer, reliable IT than normal.
, pneumatic valve plates and bolts directly through the two pipe connection in the form of the folder.

welding connections, thread connection is a simple method, often used for small pneumatic valve. Divided into two cases: direct seal: internal and external threads directly from the seal. In order to ensure that the connection is not leak, often with lead, cotton and ramie thread woven and teflon tape to fill; Including teflon tape, is increasingly widely used, the material's corrosion resistance good sealing effect is very good, easy to use and storage, dismantling, can completely remove it, because it is a sticky membrane, than lead, marijuana is much more superior. Indirect seal: pass between the two threads to tighten the plane to the power of the gasket, so, from the sealing gasket.
, card sets of connection, the development in China in recent years, its connection and sealing principle is that when the screw nut, card sets under the pressure of blade into the wall, the card sets and cone bit cones and pressure seal body joints, it can reliably prevent leakage. The advantage of this connection form is:) Small volume, light weight, simple structure, easy to tear open outfit; ） Connectivity is strong, wide use, can bear high pressure, Kg/cm2) , high temperature ( ℃) And shock and vibration) Can choose a variety of materials, anti-corrosion purposes; ） Machining accuracy is not high, easy to install the antenna. At present, the card sets of connection form, has been in the sale of our products is used by some small pneumatic valve.
clamp connection this is a quick connection method, it is only two bolts used in low pressure pneumatic valve regularly cleared.
from the above forms of media use tightly coupled connections, to offset the external pressure, to seal. Use media pressure tight connection form here. Cone, including its installation in a ring, the other side of the media into a certain Angle, by medium pressure, and then passed to the ring, at some point of the cone cone, caused by two parts, and a parallel to the centerline of the body, another body wall pressure. The latter is the tight force contribution. The media, more pressure, more is the clamping force. Therefore, this kind of connection type, high pressure pneumatic valve. Than the flange to save a lot of materials and a large number of manpower, but also needs certain pressure to the pneumatic valve pressure is not high, use and reliable. Since the tight seal pneumatic valve, usually was the use of high pressure pneumatic valve principle.
is still in a lot of pneumatic valve connection, for example, some do not have welded together to delete and small pneumatic valves; Some non-metallic pneumatic valve, use socket connection, and so on. Particular case is particular processing of pneumatic valve according to the user.
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