Anti-inflating inner cover suitable for liquid fertilizer

Abstract

The invention discloses an anti-inflating inner cover suitable for liquid fertilizer. The anti-inflating cover comprises a cover with a hole and a pulling cover. The cover with the hole comprises a cover body, a sealing ring and a cover bridge; the hole is located in the center of the cover bridge; cavities connected with the hole are further arranged along the two sides of the hole; the pulling cover is sequentially provided with an umbrella-shaped structure, a circular table structure and a cylindrical structure from top to bottom; and the upper surface radius of the circular table structure is larger than the lower surface radius of the circular table structure. The circular table structure and the cylindrical structure penetrate through the hole in the center of the cover bridge to enable the umbrella-shaped structure to be located in the cover body and to be tightly close to the sealing ring, the anti-inflating inner cover is arranged at a mouth of a bottle or a bag containing the liquid fertilizer, when the pressure in the bottle or the bag is increased, the umbrella-shaped structure is pressed upward, the pulling cover is deformed to form a gap between the umbrella-shaped structure and the sealing ring, air is discharged from the cavities between the sealing ring and the cover bridge, and the pressure is gradually lowered; and then the umbrella-shaped structure makes contact with the sealing ring again, so repeatedly, the pressure in the liquid fertilizer bottle is kept in a proper range, and therefore the inflating phenomenon is prevented.

Description

technical field [0001] The invention relates to the technical field of packaging equipment and storage and transportation equipment, and more particularly relates to an anti-bloating inner cover suitable for liquid fertilizers. Background technique [0002] Liquid fertilizer, also known as fluid fertilizer, is a liquid product of one or more nutrients required by crops, generally with N, P, K as the main component or one of them, and often Includes many micronutrients. Compared with traditional fertilizers, liquid fertilizers have obvious advantages: ①Flexible formulation and comprehensive nutrition: liquid fertilizers can be formulated according to the characteristics of crop growth and nutritional needs, and fertilizer formulations can be adjusted according to different growth conditions of crops. ② High nutrient utilization efficiency of fertilizer: Liquid fertilizer is a kind of quick-acting fertilizer with scientific fertilizer formula and high nutrient utilization eff...

AI Technical Summary

Problems solved by technology

In light cases, the packaging bag is bulging, which affects the appearance; in severe cases, the packaging bag bursts and the fertilizer liquid overflows

Fertilizer flatulence will cause harm in many aspects: first, it will cause farmers to doubt the quality of fertilizers and dare not continue to apply; second, it will directly reduce the trust of farmers and sellers in liquid fertilizer brands, and at the same time, it will also affect the production enterprises. Bring certain economic losses; Third, the flatulence causes the packaging bag to be damaged and the leaked fertilizer solution will pollute other products and storage places that are stored together, and the leaked fertilizer solution will eventually be washed into ponds and other water bodies, causing environmental pollution; It also wastes fertilizer

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