Pneumatic throttle valve

Abstract

The invention discloses a pneumatic throttle valve. The pneumatic throttle valve comprises a valve body, a valve sleeve, a regulating rod and a valve element, wherein the valve sleeve sleeves the outer wall of the valve body; a gas inlet is formed in the valve body; a gas exhaust hole is formed in the valve sleeve; a connecting channel for enabling the gas inlet to communicate with the gas exhausthole is formed in the valve sleeve; the valve element at the gas inlet is arranged in the valve body; a gas inlet hole is formed in the center of the valve element; the bottom of the regulating rod is tapered; the bottom of the regulating rod passes through the valve sleeve and extends into the gas inlet; a regulating cap sleeves the valve sleeve; the regulating cap extends into the valve sleeveand is connected with the top of the regulating rod; limiting teeth are arranged on the inner wall of the regulating cap; and the periphery of the valve sleeve is equipped with limiting slots which are matched with the limiting teeth. The pneumatic throttle valve provided by the invention has the characteristics of being simple in structure, convenient in regulating flow of exhausted gas, and convenient to lock.

Description

technical field [0001] The invention relates to the technical field of pneumatic fittings, in particular to a pneumatic throttle valve. Background technique [0002] A throttle valve is a valve that controls fluid flow by changing the throttling section or throttling length. A one-way throttle valve can be combined by connecting the throttle valve and the one-way valve in parallel. Throttle valve and one-way throttle valve are simple flow control valves. Since the flow rate of the throttle valve depends on the size of the orifice area, throttling is usually achieved by adjusting the area of ​​the orifice. [0003] Chinese patent (application number: CN201520307890.0) discloses a one-way throttle valve, comprising a valve body, the inside of the valve body is an air flow cavity, the lower part of the air flow cavity is provided with a valve core, and the center of the valve core is provided with a The air inlet hole, the upper part of the air flow cavity is provided with a ...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent (application number: CN201520307890.0) discloses a one-way throttle valve, including a valve body, the inside of the valve body is an air flow chamber, the lower part of the air flow chamber is provided with a valve core, and the center of the valve core is provided with The upper part of the airflow cavity is provided with a valve stem, the lower part of the valve stem is a throttle rod, the lower part of the valve stem is an adjustment rod, the top of the adjustment rod is provided with an adjustment wheel, and the middle part of the adjustment wheel is screwed There is a locking wheel, and a one-way sealing ring is buckled on the outside of the valve core. The upper part of the one-way sealing ring is provided with a sealing ring base buckled on the outside of the valve core. The middle part of the valve body is sleeved with a joint body. Air outlet holes are set inside the joint body, and air holes are opened in the middle of the valve body. The one-way throttle valve makes the throttle rod extend into the air inlet hole by rotating the valve stem, thereby changing the cross-sectional area of ​​the air inlet hole. To achieve the exhaust flow, after adjusting to the proper exhaust flow, you need to turn the lock wheel to fix the throttle lever, but when the throttle valve is fixed, the size of the lock wheel is different, and it is inconvenient to turn the lock wheel , and in the process of turning the locking wheel, it is easy to drive the throttle lever to rotate, which will cause the adjusted exhaust flow to change and affect the use effect of the throttle valve

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