RU2797864C1 - Sprayer pump - Google Patents

Abstract

FIELD: sprayers.

SUBSTANCE: sprayer pump comprises a cylinder with open upper and lower ends, a hollow rod located in it. The upper end of the cylinder is fixed with a union nut. On the upper outer part of the hollow rod located outside the cylinder, there is a handle and a spray mechanism. A cuff is installed at the lower end inside the cylinder. The handle chamber with suction valve is connected to a hose with a filter at the end. The spraying mechanism consists of a nozzle, a vortex body and a discharge valve fixed to the stem with a union nut. The cuff is fixed on the piston. At the upper end of the handle chamber, which has a cylindrical shape, there is a suction valve connected to the inside of the cylinder by a valve body

EFFECT: increased reliability and durability of the device in operation.

3 cl, 5 dwg, 1 tbl

Description

FIELD OF TECHNOLOGY TO WHICH THE INVENTION RELATES

The invention relates to agricultural machinery, in particular, to devices for chemical plant protection and can be used for treating horticultural and other crops with liquids.

The hand sprayer pump is a small-sized pump. Under the influence of the resulting pressure of several atmospheres, fine water with drugs dissolved in it is ejected. The ejection distance of the liquid depends on the force of the pressure exerted on it. For manual sprayers, the discharge is from 1 to 10 meters.

BACKGROUND OF THE INVENTION

Known pump-sprayer, containing a housing made inside in the form of a cylinder with open upper and lower ends, located in it a hollow rod, on the inner end of which is fixed cuff, fitting with valves, one of which is connected to the hose and the receiving filter unit. (Description of the utility model to the patent of the Russian Federation No. 41 568, IPC A01M 7/00 (2000.01), published on November 10, 2004).

The difference of this design is its lack of reliability and fragility in operation, not manufacturability in the repair of the product.

Known pump-sprayer, containing a housing made in the form of a cylinder with open upper and lower ends, located in it a hollow rod, on the inner end of which is fixed to the cuff; a suction valve connected to a hose and a suction and filter unit, and a discharge valve in the lower part of the hollow stem. (Description of the invention to the patent of the Russian Federation No. 2683232, IPC A01M 7/00, published on March 26, 2019).

The difference of this design is its insufficient reliability and fragility in operation, namely, the insufficient flow area of the suction valve in relation to the flow area of the hose, which increases the time for filling the cylinder with liquid. The location of the discharge valve in the piston housing makes it difficult to assemble this assembly and makes it impossible to replace the cuff when it fails.

This device is taken as a prototype for the largest number of essential features.

DISCLOSURE OF THE INVENTION

The objective of the invention is to increase the reliability and durability in operation.

The solution of this problem is achieved by the fact that the pump-sprayer contains a cylinder with open upper and lower ends; located in it is a hollow rod; the upper end of the cylinder is fixed with a union nut; on the upper outer part of the hollow rod, located outside the cylinder, there is a handle and a spray mechanism; a cuff is installed at the lower end inside the cylinder; the handle chamber with a suction valve is connected to a hose having a filter at the end; the spraying mechanism consists of a nozzle, a swirler body and a discharge valve fixed on the rod with a union nut; a cuff is fixed on the piston; at the upper end of the handle chamber, which has a cylindrical shape, there is a suction valve connected to the inside of the cylinder by a valve body.

Wherein:

- the discharge valve can be installed in the swirler body.

- the lower outer side of the piston can be made cone-shaped with a rectangular recess for the cuff.

Thus, in the pump-sprayer, the placement of the suction valve inside the cylinder made it possible to increase its flow area, and also, due to the valve body, to increase the reliability of the connection between the cylinder and the handle. The placement of the discharge valve in the swirler body made it possible to change the shape of the piston, making it convenient for installing the Y-shaped cuff without special mounting mandrels and easy replacement of the cuff during repair.

These features are essential and interrelated, meet the conditions for granting legal protection and meet the criteria for patentability.

The present invention is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the desired technical result.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a general view of the pump - sprayer.

In FIG. 2 - pump - sprayer in section, front view.

In FIG. 3 - the lower part of the pump - sprayer in section.

In FIG. 4 - spray mechanism.

In FIG. 5 - the lower part of the piston assembly with the cuff.

IMPLEMENTATION OF THE INVENTION

Pump - sprayer includes:

1 - cylinder

2 - handle

3 - suction valve

4 - valve body

5 - hose

6 - cap for the container

7 - filter

8 - rod

9 - piston

10 - Y-shaped cuff

11 - swirler body

12 - discharge valve

13 - nozzle

14 - union nut

15 - handle

16 - union nut

The essence of the proposed technical solution is that the spray pump contains a cylinder 1 with open lower and upper ends and a hole in which a hollow rod 8 with a piston 9 is located. The upper end of the cylinder 1 is closed with a union nut 16. On the outer part of the hollow rod 8, located outside the cylinder 1, there is a handle 15 and a spray mechanism, consisting of a nozzle 13, a swirler body 11 and a discharge valve 12, fixed on the rod 8 with a union nut 14. At the lower end of the cylinder 1, a Y-shaped cuff 10 is installed on the piston 9. At the upper end At the end of the chamber of the handle 2, which has a cylindrical shape, a suction valve 3 is installed, connected to the inside of the cylinder 1 by the valve body 4. The chamber of the handle 2 with the suction valve 3 is connected to the hose 5, which has a filter 7 at the end. 6, placed on the hose 5 and put on a container with liquid (the container with liquid is not shown).

Use the spray pump as follows. Holding the cylinder 1 by the handle 2 and moving the stem 8 by the handle 15 away from you, the suction valve 3 opens and the discharge valve 12 closes. A vacuum is created in the cylinder and liquid is sucked from the container through the filter 7 and hose 5, filling the cylinder. By moving the stem in the opposite direction, the suction valve closes and the discharge valve opens. Liquid under pressure from the cylinder through the rod is sprayed from the nozzle.

A prototype and a new pump were tested with the same parameters, table 1.

The claimed device meets the criteria for patentability and can be implemented industrially in mass production. The device can be used repeatedly (at least 200 times). The duration of operation is determined by the elastic properties of the materials from which the ring and seal are made.

Claims (3)

1. Pump-sprayer containing a cylinder with open upper and lower ends, located in it a hollow rod; the upper end of the cylinder is fixed with a union nut; on the upper outer part of the hollow rod, located outside the cylinder, there is a handle and a spray mechanism; a cuff is installed at the lower end inside the cylinder; the handle chamber with a suction valve is connected to a hose having a filter at the end, characterized in that the spray mechanism consists of a nozzle, a swirler body and a discharge valve fixed to the stem with a union nut; a cuff is fixed on the piston; at the upper end of the handle chamber, which has a cylindrical shape, there is a suction valve connected to the inside of the cylinder by a valve body. 2. Spray pump according to claim. 1, characterized in that the discharge valve is installed in the swirler housing. 3. The spray pump according to claim. 1, characterized in that the lower outer side of the piston is made cone-shaped with a rectangular recess under the cuff.

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