Venturi valve with stable sealing structure
A sealing structure, Venturi technology, applied in shaft seals, valve details, safety valves, etc., can solve the problem of no stable structure, and achieve the effect of ensuring no leakage, reducing hazards and environmental pollution, and stabilizing the sealing structure
Active Publication Date: 2015-06-17
张国君 +3
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Problems solved by technology
[0003] However, the existing Venturi valves currently on the market do not have a stable structure on the seal of the swing rod to achieve precise control of the pressure inside the valve body and the air volume.
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[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] refer to figure 1 The Venturi valve shown with a stable sealing structure includes a valve body 1, a valve stem 2 set in the valve body 1, two sets of positioning brackets 3 for supporting the valve stem 2, and the valve The valve core 4 connected to the rod 2, the swing rod 6 that is connected to the valve rod 2 through an adapter rod 5 and passes through the valve body 1, is arranged outside the valve body 1 and is connected by the swing rod 6 The adjusting bracket ...
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The invention discloses a venturi valve with a stable sealing structure. The venturi valve comprises a valve body, a valve rod, a positioning bracket, a valve element, an adapter rod, a swing rod, a regulating bracket, a regulating rod and a foundation bed. The venturi valve is characterized by comprising a sealing part which sleeves the swing rod, wherein one end of the sealing part is arranged in the valve body; the other end of the sealing part gets out of the valve body and is pressed on the valve body through a sealing pressure plate. The venturi valve has the beneficial effects that the sealing part sleeves the regulating rod, and the upper skirt side of the sealing part is compacted on the valve body through the sealing pressure plate, so that the stable sealing structure is sufficiently realized. On the premise of effectively ensuring the inner pressure intensity value of the valve body and precisely regulating and controlling air quantity, gas cannot leak outsides, and the damages and environmental pollution are reduced.
Description
technical field [0001] The invention relates to the technical field of fluid valves, in particular to a Venturi valve provided with a stable sealing structure. Background technique [0002] Venturi airflow control valves extend airflow control to the highest level thanks to their combination of a mechanical pressure independent regulator with a high speed airflow controller. Through aerodynamic design, the valve has quiet operation performance. The quick-response automatic pressure balance device provides reliable control of fume hood dust collection and indoor pressure. Venturi valve has the characteristics of not being affected by changes in air duct pressure, wide air volume control range from 60m3 / h to 10,000m3 / h, quick response (less than 1 second), and accurate adjustment (±5%), etc., and is widely used in certain Some biological product production plants, toxic and harmful, chemical laboratories and biological safety laboratories (such as P3 level biological laborat...
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IPC IPC(8): F16K17/22F16K37/00F16K41/10
Inventor 张国君张佳聪胡崔健刘屹岚
Owner 张国君