Drip irrigation device used for integration of water and fertilizer

Abstract

The invention discloses a drip irrigation device used for integration of water and fertilizer. The drip irrigation device comprises a drip irrigation pipe and a sealing cover body, wherein a D-shapeddrip irrigation channel is formed in the drip irrigation pipe; a constant-pressure groove, a tooth-shaped flow limiting groove, a drip irrigation groove and a siphon compensation groove are further formed in the drip irrigation pipe; a water flow channel is formed in one side of a pressure balance partition plate; a through hole is formed in a water flow channel plate; a pair of extrusion springsare fixedly installed at the end, away from the drip irrigation groove, of the siphon compensation groove; a siphon balance hole communicates with a siphon balance ball arranged in the D-shaped drip irrigation channel, and clean water is poured into the siphon balance ball; and a first-level sleeve is inserted in a sealing sleeve in a movably mode. A flexible pressure film expands under the actionof pressure to be matched with the tooth-shaped flow limiting groove, so that the flow speed of the drip irrigation hole is guarantee; meanwhile, during irrigation, the drip irrigation groove is opened, during irrigation stopping, the drip irrigation groove is closed, and the siphon volume is compensated through volume expansion of the siphon balance ball; and the blocking phenomenon caused by backflow of liquid in a burette is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a drip irrigation device for water and fertilizer integration. Background technique [0002] my country is a big agricultural country and also a big water-scarce country. Our per capita fresh water resources are only a quarter of the world's per capita level, ranking 121 in the world. Therefore, the development of precision drip irrigation is the only way for my country's agricultural development. Drip irrigation, water and fertilizer integrated fertilization It is a precise fertilization method, which is only applied to the roots, which can significantly improve the utilization rate of fertilizers. Compared with conventional fertilization, it can save more than 30-50% of fertilizer consumption. However, the drip irrigation method also has certain disadvantages, such as easy clogging, salt accumulation and burning. Disadvantages such as seedlings and restricted root...

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Problems solved by technology

[0004] But above-mentioned a kind of small-flow drip irrigation emitter and drip irrigation equipment still have relatively obvious defects in the use process: 1, the above-mentioned device can only realize the balance and restriction of pressure through the zigzag flow channel, but the flow restriction effect of the above-mentioned device is not enough Obviously, when the pressure in the water pipe increases to a certain range, the above-mentioned zigzag flow channel cannot guarantee the dripping speed of the drip irrigation pipe; 2. The above-mentioned device has no anti-clogging effect. The end of the pipe is easy to cause siphon phenomenon, which will cause the particles in the soil to enter the drip irrigation and block the drip irrigation pipe

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