Fixed-amount spray valve

Abstract

The invention discloses a fixed-amount spray valve. The fixed-amount spray valve comprises a fixed cover, a valve rod, an inner sleeve and a valve body, wherein the inner sleeve and the valve body areeach of a cavity structure, the fixed cover is fixedly arranged at the top of the valve body, a groove pipe is arranged at the bottom of the valve body towards the direction of an inner cavity of thevalve body, the inner sleeve is arranged inside the valve body and is fixedly connected with the inner side wall of the valve body, the valve rod penetrates through the fixed cover to extend into aninner cavity of the inner sleeve and can continue to penetrate through the bottom of the inner sleeve to be inserted into the groove pipe, and a spring is arranged at the position, inside the inner cavity of the inner sleeve, of the outer side of the valve body in a sleeved mode. According to the fixed-amount spray valve, the valve rod and the valve body are optimally designed, the valve body is lengthened, the volume is increased, and meanwhile, the inner sleeve is newly designed and communicates with the valve body, the rigidity of the valve body is increased, and therefore the internal volume is equal to the sum of the internal effective volume of the valve body plus the internal effective volume of the inner sleeve, and after the valve rod is pressed downwards, a large quantity of liquids with pressure between the valve body and the inner sleeve can be sprayed out, so that the requirement for the large spraying quantity is met while quantitative blowing is achieved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a quantitative spray valve. Background technique [0002] Spray valve is a device that turns liquid into fine water droplets and discharges it in the form of spray. The metal packaging tank composed of spray valve is called spray tank, which is widely used in daily chemical products, pharmaceutical sprays, and insecticides. on the packaging. Ordinary valves can continuously spray liquid, but because they cannot be quantified, they will spray more or less. If there is too little spray, the basic functional requirements cannot be met. In the structure, the valve body is a one-piece structure. Due to the limitation of the injection molding process, if it is too long or too large, it will cause insufficient rigidity. Therefore, the valve body cannot be made too large, which will cause the volume of the valve body to be limited, and it cannot inject more than 200mcl / time. liquid, it ...

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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a quantitative spray valve, which is used to solve the problem in the prior art that ordinary valves cannot be quantified, and general quantitative valves cannot perform large-volume spraying.

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