RU1792278C - Sprinkler - Google Patents

Abstract

The invention improves the reliability of the spraying process, since the working fluid (RH) is additionally cleaned in the filter of the distributor (DF), and the contaminants enter a special container during the washing process. In the operating mode, the coolant flows through the suction line through the filter to the pump and through the pressure line to the distributor. An additionally cleaned RF RG enters through the line through the rod to the sprayer. In case of dirtying the valve FR gates, the distributor will automatically put the sprayer into washing mode, and the warning device will notify the driver about this. and with an excessive increase in pressure in the filter cavity of the FR, part of the RG will enter through the safety valve through the drain line into the tank. After a short-term flushing, due to the pressure drop due to the action of its own springs, all the valves return to their original position and the sprayer automatically enters the operating mode. 1 C.p. f-ls, 2 ill. ate with

Description

The invention relates to agricultural machinery, in particular to crop sprayers.

The aim of the invention is to increase reliability. An additional objective is to improve spray quality by automating the cleaning process of the filter.

In FIG. 1 shows a diagram of a sprayer; in FIG. 2 - node 6 in FIG. 1.

The sprayer consists of a tank 1 of the initial liquid, a filter 2 of a rough cleaning, a pump 3 with a suction 4 and a pressure 5 lines, a distributor 6, a drain

lines 7 with a safety valve 8, a drain line 9, a container 10 for soiling, lines 11 with an indicator 12 and a manifold of a rod 13c with spray guns 14.

The distributor 6 is installed in the pressure pipe 5 and consists of a filter 15, a spring-loaded check valve 16 located at the inlet of the filter 15, a spring-loaded drain valve 17 located at the inlet of the drain pipe 9, a filter screen 18 located at the inlet of the bypass pipe 19, two-position spring loaded valve 20,

3

u to

X |

00

with

having a channel 21 and a nozzle 22 communicating with the filter filtrate cavity 23. A conical filter mesh 24 is placed in the filter housing 15 separating the filtrate cavity 23 from the source fluid cavity 25. The filtrate cavity 23 communicates with the drain line 7 with the tank

I (in Fig. 1) for the initial liquid, and the pipe 22 with the bypass line 19 and with the line 11. The cavity 25 of the filter 15 communicates with the pressure pipe 5 in operating mode and with the drain pipe 9 to the tank I d (in Fig. 1 ) for soiling in flushing mode).

The sprayer works as follows. The original working fluid through the suction line 4 from the tank 1 through the filter 2 coarse enters the pump 3 and through the pressure line 5, overcoming the force of the spring, opens the valve 16 and is sent to the cavity 25 of the filter mesh 24. The contamination of the liquid is deposited on the inner surface of the mesh 24, and the cleaned liquid (filtrate) through the cavity 23, the nozzle 22 and the line 11 is sent to the manifold of the rod 13, is distributed over the sprayers 14 and is sprayed with fine spray onto the spraying object, for example, on cotton bushes. Gradually accumulating, in the operating mode, the contaminants block the openings of the grid 24, the fluid pressure in the pressure line increases, the initial fluid flows through the grids 18 to the bypass line 19 and, overcoming the spring force, switches the valve 20 to another position (in the flushing mode).

In this case, the pressure in the cavity 25 decreases, the valve 16 under the action of the spring blocks the fluid inlet to the filter 15, and the valve 20 closes the line 11 to the rod manifold 13. The pressure in the line

II drops sharply and the indicator 12, connected, for example, with an audible signal or with a signal light, informs the driver of the unit about the switching of modes. At this point, the driver must stop the unit so that there are no flaws in the area being treated. The original fluid, cleaned by the mesh 18, flows through the channel 21 of the valve 20 and through the pipe 22 into the cavity 23. The safety valve 8, held by a spring, does not allow the fluid to flow from the cavity 23 through the drain line 7 into the tank 1. Therefore, the fluid under pressure breaks through clogged holes in the mesh 24 and enters the cavity 25. Due to the fact that the safety valve 8 is adjusted to a greater pressure than

the drain valve 17, the last, having overcome the force of the spring, opens and all contaminants are discharged along the drain line 9 into the tank 10. In practice,

flushing is carried out in a matter of seconds. However, in exceptional cases, it may take time (0.5-1.0 min) to soften and knock the dirt out of the openings of the mesh 24. In this case

0 the pressure in the cavity 23 increases, and the liquid, overcoming the spring force of the safety valve 8, partially enters the tank 1.

After the drain valve 5 opens 17, the pressure in the bypass line 19 will decrease, the valve 20 will return to the operating mode under the action of the spring. In this case, the pressure in the cavity 25 will drop sharply and the drain valve 17 will block the drain line 9 under the action of the spring, and the valve 16 will open under pressure in the pressure line, overcoming the spring force. Due to the fact that the outer surface of the filter mesh 18 is located at the level of the inner surface of the pressure line 5, the liquid stream in the operating mode constantly flushes out that non-injurious part of the contaminants that remains on it in the washing mode. On the

0 grid 18 in the washing mode delayed a little pollution, because the flushing process is quick. Therefore, the net 18 remains clean for almost the entire season. As soon as the pressure in line 11 to the manifold

5 rods 13, the indicator 12 will inform the driver about the beginning of the operating mode. The driver immediately drives the unit, and the sprayer works under normal pressure, providing the necessary

0 dispersion spread.

A positive effect of the claimed device in comparison with the prototype lies in the fact that automatic washing of the filter eliminates the need to disassemble and clean it in the field, i.e. eliminates the defeat of the driver serving the sprayer with toxic drugs (herbicides, defoliants, etc.). Availability of alarm

Claims (2)

0 eliminates flaws, which contributes to the improvement of development conditions, and therefore to increase crop yields. The presence of a special container for soiling improves the reliability of the sprayer, as Contaminants do not flow back into the source fluid tank, and most importantly, the process is environmentally friendly, as toxic contaminants are not thrown into the field. The simplicity of the design ensures reliable operation, reducing material and labor costs in the manufacture of the device. SUMMARY OF THE INVENTION 1. A sprayer containing a tank for a working fluid, a coarse filter, a pressure line with a pump and a two-position valve, a drain line with a safety valve, a distributor installed in the pressure line and connected to a boom manifold and a drain line, characterized in that, in order to improve the quality of spraying, to automate the cleaning process of the filter, it is equipped with a dirt tank, a bypass line connecting the pressure line to the rod manifold, and filtering mesh at the inlet, while the distributor is made in the form of a cylindrical container with cavities for the initial liquid and filtrate formed by a conical filter mesh and has a spring-loaded an inlet check valve in communication with the pressure line and a spring-loaded outlet valve in communication with the dirt tank, and the two-position shut-off valve with a spring is installed in the bypass line and has a channel in the side wall for communicating the bypass line with a cavity for filtrate. 2. The sprayer according to claim 1, with the proviso that a signaling device with an audible signal or a warning light is mounted in the bypass line before connecting to the boom collector.