Pneumatic flange type triple-biased butterfly valve

Abstract

The invention discloses a pneumatic flange type triple-biased butterfly valve. The pneumatic flange type triple-biased butterfly valve comprises a valve rod, a valve body, a dished plate and a pneumatic actuator, wherein one end of the valve rod is connected with the valve body, and the other end of the valve rod is connected with the pneumatic actuator; a bracket and a packing gland are arranged on the valve rod between the valve body and the pneumatic actuator from top to bottom; the packing gland tightly presses packing and a packing cushion; the upper end part of the bracket is fixedly locked with the pneumatic actuator through bolts and keys; a shaft sleeve II is arranged at the upper part of the valve rod inside the valve body; a shaft sleeve I is arranged at the lower part of the valve rod inside the valve body; the dished plate is arranged on one side edge in the middle of the valve rod inside the valve body; the dished plate is tightly pressed by a dished plate gland outsides; the dished plate is fixedly connected with the dished plate gland through a bolt I; the dished plate is fixedly locked with the valve rod through a pin; an opening pine, an eyelet bolt and a pin shaft are arranged on the bracket below the packing gland. With the adoption of the pneumatic flange type triple-biased butterfly valve, the butterfly valves are in more stable connection; the breakdown rate is reduced; the structures are more compacted, so that the better sealing property is realized. The pneumatic flange type triple-biased butterfly valve is more suitable for the circulation of media, such as steam, air, water and oil products.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a pneumatic flange type three-way butterfly valve. Background technique [0002] Butterfly valve is a common component used in pipelines to realize pipeline on-off and flow control, and the sealing effect is relatively reliable in structure. Especially in the environment of the circulation of gas and liquid media, better sealing effect is required, and the traditional butterfly valve not only has a large torque when used, which makes the operation more troublesome, but also the sealing performance of the butterfly valve is poor. A lot of waste is caused in the process, and the cost is also greatly increased. Contents of the invention [0003] Aiming at the shortcomings of the butterfly valves in the prior art, the invention provides a pneumatic flange type three-way butterfly valve with better sealing performance and more convenient and simple operation. [0004] In order to a...

AI Technical Summary

Problems solved by technology

Especially in the environment of the circulation of gas and liquid media, better sealing effect is required, and the traditional butterfly valve not only has a large torque when used, which makes the operation more troublesome, but also the sealing performance of the butterfly valve is poor, which is very difficult to use. A lot of waste is caused in the process, and the cost is also greatly increased

Images