Convenient-to-adjust temperature and pressure reducing valve

Abstract

The invention belongs to the technical field of valve equipment, and relates to a convenient-to-adjust temperature and pressure reducing valve which comprises a valve body, a valve core and a valve cover, wherein the valve core is mounted in the valve body; the valve body comprises an upper valve cavity and a lower valve cavity; an isolating layer is arranged between the upper valve cavity and thelower valve cavity; a communicating pipe is mounted on the isolating layer; a first communicating groove is formed in the side wall of the communicating pipe; the upper valve cavity and the lower valve cavity communicate through the first communicating groove; a valve flap is mounted at the bottom end of the valve core, and comprises a valve flap column and a valve flap cylinder; the valve flap cylinder is fixedly mounted on the valve flap column; a second communicating groove is axially formed in the side wall of the valve flap cylinder; an accommodating cavity is axially formed in the valvecover; the valve core is equipped with an adjusting cylinder inside the accommodating cavity; a threaded sliding groove is formed inside the adjusting cylinder; an adjusting shaft slidably penetratesinto the adjusting cylinder; and an executing device is connected with the adjusting device and used for driving the adjusting shaft to move up and down. Consequently, the influence of medium force on opening-closing force can be avoided; the convenient-to-adjust temperature and pressure reducing valve can be relatively convenient to open and close; and meanwhile, the pressure loss can be avoided.

Description

technical field [0001] The invention belongs to the technical field of valve equipment, and in particular relates to an easy-to-adjust temperature and pressure reduction valve. Background technique [0002] With the further implementation of the national energy-saving and emission-reduction strategy, various pressure equipments are developing rapidly, especially the large-capacity and large-scale unit pressure equipment with steam as the power source. Pressure reducing valves are used more and more widely. [0003] The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to keep the outlet pressure automatically stable. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed,...

AI Technical Summary

Problems solved by technology

However, due to the existence of the balance hole channel, the medium will flow out from the balance hole channel. When the force of the balance medium is not needed, the medium will still leak, resulting in a loss of pressure.

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