A multifunctional spray valve

Abstract

The invention belongs to the technical field of fluid output control devices and relates to a multifunctional spray valve which comprises a valve body and a valve rod. A central hole and a radial penetrating hole are formed in an outer section of the valve rod, a middle internal shrinkage hole of the valve body divides the valve body into a quantifying chamber and a circulating chamber, the outer circle of the valve rod is provided with a closed protruding ring and a limiting protruding ring, the outer diameter of the closed protruding ring is matched with the inner diameter of the internal shrinkage hole, the outer diameter of the limiting protruding ring is large than the inner diameter of an outlet of the valve body, the valve rod has a closed position formed when the limiting protruding ring is blocked by the outlet of the valve body and the quantifying chamber is communicated with the circulating chamber while separated from the radial penetrating hole, a quantitative spray position formed when the closed protruding ring is embedded in the internal shrinkage hole and the quantifying chamber is communicated with the radial penetrating hole while separated from the circulating chamber, and a continuous spray position formed when the closed protruding ring enters the circulating chamber and the quantifying chamber is communicated with both the circulating chamber and the radial penetrating hole, and an elastic device enabling the valve rod to tend to the closed position is mounted between the valve body and the valve rod. By the simple and reasonable structure, quantitative or continuous spraying can be realized through simple control.

Description

technical field [0001] The invention relates to a spray control device, in particular to a multifunctional spray valve, which belongs to the technical field of fluid output control devices. Background technique [0002] Spray products are increasingly widely used in industries such as industry, life, and medical treatment. Common spray valves for controlling sprays are of a normally closed structure, and its typical structure can be found in Chinese patent application No. 200810020952.4. When in use, control the opening of the valve to continuously spray the mist fluid outward, and close the valve to stop the spraying. The use of products in some fields requires controlled dosage and quantitative use. The basic structure of the spray valve with quantitative function can be referred to the Chinese patent application whose application number is 99804167.x. [0003] For the use requirements that sometimes require continuous spraying and sometimes quantitative spraying, some p...

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Problems solved by technology

[0003] For the use requirements that sometimes require continuous spraying and sometimes quantitative spraying, some people try to connect the above two valves in series. Although the required function can be achieved in theory, it is obviously complicated in structure, high in manufacturing cost, and inconvenient to operate.

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