SU412345A1 - - Google Patents

Description

I

The invention relates to agriculture and can be used for drip irrigation of plants.

Systems are known for automatically supplying, for example, a nutrient solution to plants, including a container with a level regulator therein, a float sensor and porous humidifiers that supply the nutrient solution to the plants depending on soil moisture.

The purpose of the invention is to control the flow of water depending on the ambient temperature.

This is achieved by the fact that the level regulator is equipped with two bimetallic plates, one ends of which are rigidly fixed on the shank of the float, while others are interconnected by means of a base mounted on the shank that can be moved along it and interacting with the shut-off valve.

The drawing shows a drip irrigation system in general.

It consists of a tank 1 with a level regulator consisting of a check valve 2 with a lever 3 connected to the base 4 mounted on the bar 5 of the float 6 with the ability to move along it when the bimetallic plates 7 are straightened or bent under the influence of temperatures

the environment. The plates are attached to the base and to one another by means of hinges 8. The rod 5 is passed with free sliding through the guide sleeve 9 attached to the base. In the side wall of the container there is a nozzle 10, to which a feeding line 12 is connected with a rubber nozzle 11. Its end is plugged with a stopper 13. In the upper

portions of the feed pipe opposite each pair of plants of one interstitial are drilled holes for arranging two porous humidifiers (wicks) 14, the free ends of which are placed on

some distance from the plant.

The principle of operation of the irrigation system is as follows.

To the outlet fitting of the check valve 2 connect the water that enters the tank 1 and, filling it, fills the feed line 12. In this case, the water level in it should reach the holes a. This is achieved by changing the position of the float and the base relative to each other. The maximum water level in the feed pipe is set at the maximum air temperature.

After filling the system with water, porous humidifiers (wicks), due to their capillary (sucking) properties, will begin

to transport water from the feed pipe to the plants. The water level in the feed pipe varies automatically and depends on the ambient temperature. At the maximum temperature will be the maximum flow, and at the minimum - the minimum flow. The automatic adjustment of the water level in the system, depending on the ambient temperature, occurs due to the effect of bimetallic plates on the float 6. When the temperature rises, they will be straightened, and when lowered, they will bend. In this case, the float will accordingly approach or move away from the base 4, thereby changing the setpoint of the float,

which entails a change in the height of the fluid in the feed pipe. The subject of the invention is a drip irrigation system for plants, including a container with a level regulator in it consisting of a shut-off valve controlled by a float sensor, a supply line and porous humidifiers, in order to control the flow of water in the supply line depending on ambient temperature, the regulator is equipped with two bimetallic plates, one ends of which are rigidly fixed on the boom of the float, while others are interconnected by means of a base mounted on the tongue with the ability to move along it and interacting with the shut-off valve.