Automated irrigation and fertilization apparatus with integration of water and fertilizer

Abstract

The invention discloses an automated irrigation and fertilization apparatus with integration of water and fertilizer, comprising a water tank, a water feeding pipe, a return water pipe, a water pump,a backwash system, a master irrigation pipe, a fertilizer distribution system, branch irrigation pipes, and a console. A water inlet of the water pump is connected with the water tank; a water outletof the water pump is connected with the water feeding pipe; one end of the return water pipe is connected with the water tank; the backwash system is connected with the water feeding pipe, the returnwater pipe and the master irrigation pipe; the master irrigation pipe is provided with the fertilizer distribution system; the tail end of the master irrigation pipe is connected with the multiple branch irrigation pipes; the console is electrically connected with the water pump and the fertilizer distribution system. The backwash system includes four electromagnetic valves arranged in cross manner and filter nets which provide alternate filtering. The fertilizer distribution system comprises a fertilizer distribution pipe connected to the master irrigation pipe in parallel bypass manner, as well as a fertilizer chamber, a discharge unit, a fertilizer liquid tank, a concentration sensor and a flow adjusting valve which are arranged on the fertilizer distribution pipe; a flow sensor is arranged on the master irrigation pipe. Each branch irrigation pipe is provided with water distribution valves for adjusting water flow.

Description

technical field [0001] The invention relates to the field of agricultural irrigation devices, in particular to a water and fertilizer integrated automatic irrigation and fertilization device. Background technique [0002] The integration of water and fertilizer is a new mode of agricultural irrigation, which pre-dissolves fertilizers in water bodies, and then irrigates. Irrigation is divided into sprinkler irrigation, flood irrigation, drip irrigation, etc. [0003] In response to the national requirements for environmental protection and energy saving and water saving, drip irrigation has been vigorously promoted in terms of precision agriculture and planting. The combination of drip irrigation and water and fertilizer integration is also the irrigation trend of precision agriculture. [0004] In the prior art, there are several problems in the integration of water and fertilizer: [0005] 1. The integration of water and fertilizer is simply to mix the fertilizer into the...

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Problems solved by technology

[0005] 1. The integration of water and fertilizer is simply to mix the fertilizer into the water body and transport it to the soil of the plant roots through the pipeline. In order not to block the pipeline, the water inlet is generally equipped with a filter, but the existing filter is generally a section of fine sand pipeline. With the progress of irrigation, more and more sundries are accumulated in the filter, and the water inlet resistance increases significantly. It needs to be removed manually for cleaning or replacement, which is troublesome;

[0006] 2. The fertilizer is directly put into the water body for stirring and mixing. The concentration of the fertilizer solution fluctuates greatly due to the amount of feeding. For some plants that are sensitive to the concentration, "root burning" damage may occur or in order to avoid "root burning", reduce the concentration to a lower concentration. Small value leads to insufficient fertilization;

[0007] 3. The distance between the water outlet position at the tail of the irrigation pipe and the irrigation main pipe is not the same, so the water output is also quite different. The water outlet near the main pipe has a lot of water outlet, while the water outlet hole at the end has less water outlet or even no water. Some are more advanced. The water and fertilizer integrated device is equipped with a pressure regulating valve at the water outlet position to make the total value of the water outlet resistance plus the resistance along the process approximately the same, so that the water output is consistent, but each pressure regulating valve needs to be adjusted separately, which is very troublesome

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