Hydraulically-driven rotational flow fertilizer injection device of irrigation system

Abstract

The invention relates to a hydraulically-driven rotational flow fertilizer injection device of an irrigation system. The fertilizer and irrigation water with kinetic energy are fed into a fertilizer injection chamber along the tangential direction of the bottom of the fertilizer chamber together to form an upward spiral rotating water flow; the fertilizer particles of which the volume weight is larger than that of water are thrown on the round inner wall of the fertilizer injection chamber under the action of a centrifugal force, and spirally raises along with the water flow along the round inner wall; as the water inlet of a water outlet pipe is positioned at the center of the upper part of the fertilizer injection chamber, the open area of the fertilizer injection chamber of a round table is increased from bottom to top, and the water flow velocity of the round inner wall is decreased from bottom to top; and when the impact force and centrifugal force of water on the non-dissolved fertilizer particles spirally raising along with the water flow along the round inner wall are balanced with the gravity and buoyancy of the non-dissolved fertilizer particles, the fertilizer particlesdo not raise any longer until the fertilizer particles are completely dissolved. The fertilizer particles are subjected to the multiple outer force effects for accelerating dissolving, such as collision, washing and glass centrifuging and the like, thus achieving good dissolving effect on the fertilizer which is difficult to dissolve.

Description

Technical field: [0001] The invention relates to the technical field of farmland irrigation, in particular to a hydraulically driven swirl fertilizer injection device for an irrigation system. Background technique: [0002] The existing irrigation system fertilizer injection methods require the use of liquid or instant solid fertilizers in water, which is easy to do for nitrogen and potassium fertilizers, but for phosphate fertilizers, only a few varieties such as potassium dihydrogen phosphate can provide fully water-soluble phosphate fertilizers. Most phosphate fertilizers are difficult to implement due to low solubility or containing insoluble matter. In most cases, phosphorus fertilizer is still used as base fertilizer, resulting in low fertilizer utilization rate, only 8-20%, especially for acidic soil. [0003] In order to overcome the shortcomings of the existing technology, the utility model patent with the application number of 201020169822. "device". The device ...

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Problems solved by technology

[0004] 1. The external centrifugal pump of the fertilization reactor increases the complexity and production cost. The liquid in the reactor flows vertically upwards. Due to the lack of "collision", it only has a scouring effect on the solid fertilizer and has no crushing effect. Therefore, the effect is not ideal. ;

[0005] 2. The rising liquid flow in the fertilization reactor must be filtered through the filter installed on the top of the fertilization reactor, resulting in a heavy load on the filter and easy blockage, which not only affects the speed of the rising liquid flow, but also removes the workload of the blockage also relatively large

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