Precision anti-blocking liquid fertilizing gun

Abstract

The invention relates to a precision anti-blocking liquid fertilizing gun. The fertilization gun comprises a switch combination, a liquid measuring barrel, a gun bar and a gun head, wherein the liquid measuring barrel, the gun bar and the gun head are communicated in sequence. A distribution chamber, which is divided into an upper chamber and a lower chamber by a water discharging plunger piston, is disposed in the upper part of the liquid measuring barrel. The upper chamber is provided with a fertilizing amount adjusting device. The side wall of the distribution chamber is provided with a general water inlet pipe, and a lower-chamber water inlet pipe communicated with the lower chamber. The general water inlet pipe is communicated with the upper chamber through an upper-chamber water inlet pipe. A controlling plunger piston, the top of which is connected to the switch combination through a connecting rod, is disposed in the distribution chamber. The side of the gun head is provided with a water outlet. An anti-blocking plunger piston, which is connected with the controlling plunger piston through an anti-blocking connecting rod, is disposed inside the gun head. When the switch combination is normally opened and is not working, the controlling plunger piston is at the bottom of the distribution chamber, the lower-chamber water inlet pipe is communicated, the upper chamber and the lower chamber are in a pressure balance, the water discharging plunger piston is at the highest position and the anti-blocking plunger piston closes the water outlet. When the switch combination is closed and fertilization is performed, the lower-chamber water inlet pipe is closed by the controlling plunger piston, the pressure in the upper chamber is larger than the pressure in the lower chamber, the water discharging plunger piston is moving downward, the anti-blocking plunger piston is moving upward and the water outlet is opened.

Description

technical field

[0001] The invention belongs to the field of agricultural fertilizing machinery, and in particular relates to a precision anti-clogging liquid fertilizing gun. Background technique

[0002] In the past, farmers topdressed crops with dry chemical fertilizers using hole application. Using this traditional method of hole application to topdress fruit trees is not only time-consuming and laborious, but it is also easy to dig off many tree roots when digging holes. In addition, dry chemical fertilizers applied to holes are likely to burn some of the roots, and more importantly, solid chemical fertilizers The decomposition rate in the soil is slow. When topdressing fertilizers, not only cannot provide sufficient nutrients for plants in time, but also cause waste of fertilizers and pollute the soil. According to tests, the effective utilization rate of chemical fertilizers in traditional fertilization is only about 30%, and most of the active ingredients are slowly...

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