Micro-operation type valve

Abstract

The invention relates to a valve, in particular to a micro-operation type valve which realizes large switching and regulating actions of the valve by using per se pressure of a medium and amplifying the per se pressure of the medium through a micro operating force. The valve comprises an inflow chamber, a buffer chamber and an outflow chamber, wherein the buffer chamber is arranged between the inflow chamber and the outflow chamber; the inflow chamber is provided with an inlet; the outflow chamber is provided with an outlet; the three chambers are separated by valve core; and a medium passage is formed between the buffer chamber and the outflow chamber and is provided with a control valve. The micro-operation type valve has the following technical advantages: a gap between the valve core and the buffer chamber is allowed and used for leaking flows and performing control without adopting a thin film for sealing so as to prevent equipment failures caused by aging of the thin film; by using the per se pressure of the medium, the operation is labor-saving and energy-saving, and greatly increase reliability; and a gate valve is closed when the control valve is closed. At that time, no passage leaks flows except for a valve port of the gate valve, and the closing force is stronger when the pressure difference between the front and rear sides of the valve is larger, so internal leakages are difficult to occur.

Description

[0001] [0002] technical field [0003] The invention relates to a valve, in particular, a micro-operated valve that utilizes the pressure of the medium itself through a small operating force to borrow the pressure of the medium itself through amplification to realize large switching and adjusting actions of the valve. Background technique [0004] Ordinary valves are divided into manual, electric, pneumatic and other forms in terms of operation. Its operating force acts directly on the spool, and currently there are the following problems: [0005] 1. Difficult to operate. Especially large-scale valves, whether electric or manual, have problems such as jamming, high resistance, loose closing, and difficulty in opening. [0006] 2. The leakage is serious. After the valve has been used for a certain period of time, the seal at the valve stem will leak out of the medium due to aging, wear, looseness and corrosion of the valve stem. [0007] 3. Lax closing and internal le...

AI Technical Summary

Problems solved by technology

[0005] 1. Difficult to operate

Especially large-scale valves, whether electric or manual, have problems such as jamming, high resistance, loose closing, and difficulty in opening

[0006] 2. Serious leakage

[0007] 3. Lax closing and internal leakage

Since the shutdown is all dependent on external force, and the external force is often too small, resulting in internal leakage

[0008] 4. The operation and sealing mechanism is huge, which wastes a lot of metal materials and manufacturing costs

[0009] The above problems, especially the internal and external leakage, waste a lot of energy and seriously affect the appearance of the environment. For a long time, it has been a thorny problem that most industrial and mining enterprises have been constantly solving

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