PL239864B1 - Garden sprayer - Google Patents

Abstract

The subject of the invention is a garden sprayer used for spraying chemical preparations on woody and green plants such as: trees, shrubs, perennials, annuals and biennials. The sprayer consists of a metal or plastic tank (1). The tank (1) can be divided. Inside the tank (1) there is a flexible diaphragm (2), which does not allow water to pass through and can be freely mounted inside the tank (1), dividing it into two chambers: the working chamber (3) and the driving chamber (4). On both sides of the tank there are a working nozzle (5) and a driving nozzle (6), to which the working (7) and driving shut-off valves (8) are attached, and hose connectors (9) are placed behind the valves (7 and 8). . The hose connectors (9) are in the form of a garden water connector. The driving fluid is water under pressure, and the pressure of the driving fluid is obtained by using the pressure of tap water or water pressure from a submersible pump. However, the pressure of the working fluid is obtained by using the pressure of the driving fluid acting on the flexible diaphragm (2).

Description

PL 239 864 B1

Description of the invention

The subject of the invention is a garden sprayer applicable to spraying wood and green plants with chemical preparations, such as: trees, shrubs, perennials, annuals and biennials.

There are known solutions of garden pressure sprayers, in which the working pressure of the liquid is obtained by creating an overpressure inside the chamber filled with the working liquid by means of a pump. The pump is operated manually using a lever. It is possible to replace the manual drive of the pump with an electric or combustion engine.

The solution DE20213368U1 is known, showing a pressure garden sprayer equipped with a working water tank, in which compressed air is used to obtain the working pressure.

The aim of the invention is to provide a garden sprayer, the drive of which is realized by the pressure of the liquid coming from the water mains or from a submersible pump.

The device according to the invention is characterized in that the garden sprayer consists of a metal or plastic tank of any but known volume, inside which a flexible water-impermeable diaphragm is placed, drive and working shut-off valves, drive and working nozzles and hose couplings. A flexible diaphragm divides the inside of the tank into two chambers. Working chamber (for working liquid) and driving chamber (for driving liquid).

The hose couplings are preferably in the form of a garden water quick coupler.

The driving fluid is pressurized water. The drive fluid pressure is obtained by using tap water pressure or the water pressure of a submersible pump.

The pressure of the working liquid is obtained by using the pressure of the propelling liquid acting on the flexible diaphragm.

The solution according to the invention allows for the spraying of woody and green plants by generating the pressure of the working liquid without the use of human muscles, internal combustion engines or electricity.

Thanks to the solution according to the invention, the following favorable technical and operational effects were obtained:

- range of the working stream enabling spraying of tall trees from the ground, - spraying in places with difficult or without access to electricity,

- complete elimination of costs related to the purchase of fuels and energy,

- high comfort for the sprayer operator,

- handy and easy to use,

- low implementation costs.

The subject of the invention has been shown in the drawing, where Fig. 1 shows a schematic drawing of a sprayer, Figs. 2-4 show the various stages of the sprayer operation.

The sprayer is a metal or plastic tank 1. The reservoir 1 can be divided. Inside the tank 1 there is a flexible diaphragm 2 that is impermeable to water and is freely mounted inside the tank 1 dividing it into two chambers: the working chamber 3 and the drive chamber 4. On both sides of the tank there are working 5 and drive 6, to which the working 7 and drive 8 shut-off valves are mounted, and after the valves 7 and 8 there are hose couplings 9.

Hose couplings are in the form of a garden water coupler.

The driving liquid is water under pressure, the pressure of the driving liquid is obtained by using the pressure of tap water or the pressure of water from a submersible pump.

On the other hand, the pressure of the working fluid is obtained by using the pressure of the propelling fluid acting on the flexible diaphragm 2.

The operation of the garden sprayer takes place in three stages (phases):

- preparation for spraying,

- preparation of the drive,

- spraying plants.

Preparation for spraying consists in filling the working chamber 3 of the sprayer with a chemical agent in order to obtain a working liquid of an appropriate concentration. First to the work chamber

Claims (2)

PL 239 864 B1 3 with a known volume, the chemical is poured without dilution. Then, through the hose connection 9 and the operating ball valve 7, the working chamber 3 is filled with tap water, which dilutes the chemical agent to a concentration appropriate for the sprayed plant. When filling the working chamber 3 with tap water, the flexible diaphragm 2 bends until it acquires the inner shape of the tank. The drive valve 8 is in the closed position. Preparation of the sprayer drive consists in supplying water pressure to the driving chamber 4 located on the opposite side of the diaphragm 2. The water supply line is connected through a hose coupling 9 and a drive ball valve 8. A lance is connected to the hose coupling 9 from the working chamber 3 side. spraying plants (not shown in the picture). The sprayer is activated by opening both ball valves: driving 8 from the drive chamber 4 and working 7 from the working chamber 3. After opening the lance valve, the plants are sprayed. The plants are sprayed as follows. Tap water of appropriate pressure (0.3-0.4 MPa) flowing into the driving chamber 4 of the sprayer affects the diaphragm 2 separating the driving chamber 4 from the working chamber 3. Under the influence of the tap water pressure acting on the diaphragm 2, the working fluid intended for spraying is pushed out with a pressure close to the driving pressure through the ball valve 7. The spraying process continues until the working chamber is emptied 3. The operation of the sprayer can be continuous when tap water is supplied continuously. It is also possible to operate with a disconnected supply line supplying pressurized water to the drive chamber. After closing the working valve 7 and filling the drive chamber 4, it is disconnected from the power supply (disconnecting the hose connection 9) after first closing the drive valve 8. Then the working valve 7 is opened and the plants are sprayed. After closing the working valve 7, connecting the power to the hose connector 9 and opening the drive valve 8, the driving chamber 4 is powered again. The spraying process continues until the working chamber is emptied 3. Patent claims 1. A garden sprayer, characterized in that it consists of a metal or plastic tank (1) of any but known volume, inside which a flexible water-impermeable diaphragm (2) is placed, drive (8) and operating (7) shut-off valves ) and the driving (6) and working (5) stubs and hose couplings (9), the flexible diaphragm (2) divides the interior of the tank (1) into two chambers, one of which is the working chamber (3) for the working liquid and the second is a driving chamber (4) for the propellant. 2. A garden sprayer as claimed in claim 1, The hose couplings of claim 1, wherein the hose couplings (9) are in the form of a garden water quick coupler.