Soilless culture system with light control water level controller

Abstract

The invention discloses a soilless culture system with a light control water level controller. The soilless culture system comprises a nutrient solution pool, a water pump, a liquid carrying tank and a light control water level controller, wherein the light control water level controller is used for controlling a power supply of the water pump and comprises a power supply circuit, a water level control circuit, a light control circuit, a low water level detection line, a middle water level detection line, a high water level detection line and a relay, the water level control circuit is connected with the power supply circuit, the light control circuit is connected with the water level control circuit, the low water level control line, the middle water level control line, the high water level control line and the relay are connected with the water level control circuit, and the water level control circuit obtains the liquid level height of nutrient solution in the liquid carrying tank by using the water level detection lines and controls the state of the relay through the signal of the light control circuit and the measured water level, so the power supply of the water pump is controlled, the nutrient solution in the nutrient solution pool is pumped into the liquid carrying tank through the water pump, and the liquid carrying tank is provided with a liquid outlet used for flowing back the nutrient solution in the liquid carrying tank into the nutrient solution pool. The soilless culture system with the light control water level controller disclosed by the invention has the advantages that the structure is simple, the performance is reliable, and the normal irrigation of the soilless culture system can be ensured.

Description

technical field [0001] The invention relates to a soilless cultivation system, in particular to a soilless cultivation system with a light-controlled water level controller. Background technique [0002] In the process of rapid development of modern facility agriculture, the planting method of soilless cultivation is more and more widely used. In modern facility agriculture, especially in the soilless cultivation of horticultural crops, more and more automatic water supply irrigation techniques are used in soilless cultivation techniques. [0003] Water towers or high-level water tanks that supply water for industrial and agricultural production basically realize automatic water supply through automatic water level control devices. The water level controller widely used at present is a kind of float type water level controller. The float type water level controller is mainly composed of a float ball, nylon rope, pulley, counterweight, bracket, limit gear, connecting rod an...

AI Technical Summary

Problems solved by technology

The float type water level controller is mainly composed of a float ball, nylon rope, pulley, counterweight, bracket, limit gear, connecting rod and travel switch. The water level is controlled by the float ball as the water level rises and falls. Yes: On the one hand, the weather is cold in winter, so that the nylon rope, pulley, limit gear, etc. are frozen, and the nylon rope cannot slide on the pulley with the float and counterweight, so that the limit gear cannot touch the limit gear according to the original design intention. On the other hand, the summer weather is hot, because the travel switch is installed on the water surface in the water tank, the water vapor will corrode the travel switch, causing the travel switch to short circuit, causing the control device to be out of control; in addition, the float control device sometimes Loss of control due to mechanical transmission failure

Insufficient water level controller makes the soilless cultivation system unable to irrigate normally, which affects the growth of crops

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