RU2319552C1 - Sprinkler head - Google Patents

Abstract

FIELD: fine and drop irrigation sprinkling equipment.

SUBSTANCE: sprinkler head has casing to be mounted on water feeding pipeline, and deflector fixed to casing. Deflector is made in the form of concave bowl oriented toward casing and fixed to the latter by means of threaded bushing and having blade contour embracing said casing. Blades are contoured as parabolic curves. Blade contour has central conical flow divider to which flow divider blades of blade contour are joined. Deflector is attached to casing by means of threaded bushing and is made integral with blades. Cover is provided above blade contour on threaded bushing so as to cover blades from the top. There are L-shaped openings in threaded bushing of cover. Lower part of L-shaped openings is inclined at an angle of 25-30 deg to axis of sprinkler head. L-shaped openings are designed for communicating spaces between blades with atmosphere. Sprinkler head is adapted to be dismantled. Hexagonal protrusion provided in lower part of deflector is sized to correspond that of wrench.

EFFECT: increased efficiency by providing selection of optimal irrigation parameters and enhanced reliability in operation of sprinkler head.

3 cl, 2 dwg

Description

The invention relates to techniques for irrigation with fine and drip irrigation and can be used in mobile installations for producing rain with droplet sizes acceptable for irrigation of a wide range of cultivated crops.

Known nozzles of the sprinkler apparatus, comprising a housing, a deflector fixed to the rack and a nozzle with a central hole, in which, in order to enable the regulation of rain intensity during irrigation, the nozzle is made of a shape memory material with a reduction of the central hole from a larger diameter to a smaller one when heated moreover, the rack is made of the same material as the nozzle, with a mass equal to the mass of the nozzle; it is equipped with a power source and adjustable resistance, while the stand and nozzle are electrically connected to each other and connected to a power source through adjustable resistance (SU, copyright certificate No. 1616711, A1, M. class ⁵ V05V 1/18, 1/26. Nozzles sprinkler aggregate / VB Kovshevatsky. Applicant - NPO YUGmelioration.

The disadvantages of the described nozzle include a small range of changes in the size of the raindrops and the complexity of the design. To change the position of the deflector post, an entire electrical network with communications and a power source is required.

Also known is a sprinkler deflector nozzle containing a housing mounted on a rack, connecting the pillar to a support with a deflector mounted on it and placed in the housing with the possibility of rotation of the fluid flow regulator, in which, in order to increase the reliability of the nozzle, the quality of spray and expansion of technological capabilities, the flow regulator the liquid is made in the form of a cylindrical liner with diametrically located channels of different diameters, and the deflector is made with a central channel and is equipped with in the latter axially movable core (SU, Inventor's Certificate №923635, M. Cl ³ V05V 1/18, 1/26, 1/30 deflector sprinkler nozzle / L.B.Nodel Applicant -... Volzhsky Research Institute hydraulic engineering and land reclamation. Declared 05/27/1980; Publ. 04/30/1982).

During irrigation by sprinkling with two-console sprinkler units of the DDA-100 VX family (Volgograd Plant of Irrigation Equipment OJSC), the irrigation water is drawn by a floating valve from an open irrigation system. Together with water from the canal, both sediment and mineral suspension are sucked in. During the operation of the described nozzle, the radial channels of small diameter are primarily clogged. Each nozzle also requires careful individual adjustment when supplying irrigation water under operating pressure. To clean the radial channels, a complete disassembly of the nozzle is required. All this reduces the technological reliability of the sprinkler.

A nozzle for a sprinkler assembly is known, comprising a body mounted by means of a nipple of a water supply pipe, a deflector fixed to the column and a nozzle with a central hole, the deflector made in the form of a concave bowl facing the nozzle with a bulge in its middle part and a threaded hole combined with the axis of symmetry, divided stiffeners on compartments and undercut of the curved surface of the bowl between its peripheral annular edge and convexity, each of the compartments has A variable section, while equipped with the possibility of stepless movement, the deflector and the nozzle are connected by means of a stand (RU, patent No. 2173584, C1, M. class. ⁷ B05B 1/18, 1/26. Nozzle of the sprinkler unit / V.G. Abezin, V. V. Karpunin, V.V. Karpunin, V.A.

The disadvantages of the described nozzle sprinkler unit include design complexity, low reliability, lack of the ability to obtain fine irrigation.

This design is accepted by us as the closest analogue.

The essence of the claimed invention is as follows.

The problem to which the invention is directed, is the creation of a universal nozzle for sprinkler machines, providing specified water flow rates and fine sprinkling and the possibility of simplified maintenance.

EFFECT: increased reliability and simplified design.

The specified technical result is achieved by the fact that in the known sprinkler nozzle, comprising a body mounted on a water supply pipe and a deflector fixed to a threaded sleeve, according to the invention, the deflector is made in the form of a concave bowl facing the body with a blade contour covering the body and having blades made in parabolic curved, while the blade contour in the center has a conical flow divider, with which the blades of the blade contour are paired, while the deflector is made with blades m contour as a single part and has perimeter reflectors around the blade contour above the blade contour of the threaded sleeve of the deflector; they cover the blades from above, L-shaped holes are made in the cap of the threaded sleeve, the lower part of which is inclined at an angle of 25 ° ... 30 ° to sprinkler nozzle axes that connect the inter-blade space to the atmosphere.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information and identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention.

Therefore, the claimed invention meets the criterion of "Novelty" under existing law.

The invention is illustrated by drawings.

Figure 1 presents the sprinkler nozzle, a diametrical section.

Figure 2 is the same, section aa in figure 1.

Information confirming the possibility of implementing the claimed technical solution is as follows.

The sprinkler nozzle contains a housing 1 mounted on a water supply pipe using a thread 2. A deflector 4 is mounted to the housing 1 using a threaded sleeve 3, having a blade contour 5 with blades 6. A deflector 4 has a curb reflector 7 around the perimeter. The blade 5 in the center has a conical 8 stream divider. In the lower part of the deflector 4 there is a protrusion 9 in the form of a hexagon for the size of the key. A cover 10 is mounted above the blade contour 5 using a threaded sleeve 11. The cover 10 overlaps the blades from above, providing a gap between the cover 10 and the curb reflector 7. L-shaped holes are made in the threaded sleeve 11 of the cover having a lower inclined part 12 and an upper vertical part 13 The lower part of the holes 12 is inclined at an angle of 25 ... 30 ° to the axis of the sprinkler nozzle. Holes 12, 13 are designed to connect the inter-blade space with the atmosphere. The lower part of the housing 1 has a pair of 14 with the blade circuit 5.

Sprinkler nozzles works as follows.

Before starting work, the tightness of the cover 10 to the blade contour 5 is checked. If necessary, the cover 10 is pressed against the blade contour 5 using a threaded sleeve 11. When water is supplied to the housing 1, the flow divider 8 evenly directs water into the inter-blade space. After the flow leaves the building 1, its movement can be considered as in a conical diverging nozzle (Bogomolov A.I., Mikhailov K.A. Hydraulics. Textbook for high schools. Vol. 2, revised and supplemented M., Stroyizdat, 1972 .- 648 p. - S.148).

In a conical diverging nozzle, the velocity of the jet in a compressed section will be greater than the velocity of the jet at the outlet of the nozzle, and the pressure, on the contrary, is less, therefore, there is a vacuum in such a nozzle. The holes 12, 13 in the threaded sleeve 11 of the cover 10 are made in the place of the formation of vacuum, which ensures air suction in this place.

During operation, the nozzle through the openings 12, 13 causes air to suck in and a water-air mixture forms, which enters the high-pressure area, where air bubbles are destroyed and hydraulic shocks occur, which leads to the destruction of the flow integrity, therefore water is ejected through the curb reflector 7 in the form of finely atomized particles that settle on the irrigated area, providing moisture. In this case, the plants are not injured by drops and the soil structure is not destroyed.

Claims (3)

1. Sprinkler nozzles comprising a housing and a deflector fixed to the housing, made in the form of a bowl facing the housing side, characterized in that the deflector is fixed to the housing using a threaded sleeve and has a blade contour covering the housing with the shape of the blades made according to parabolic curves, in this case, the blade circuit in the center has a conical flow divider with which the blades are mated, and the deflector is made with a blade circuit as a single part and has a curb reflector around the perimeter, above the blade circuit for thread A cover is installed on the baffle of the deflector, covering the top of the blades, with a predetermined gap between the cover and the curb reflector, L-shaped holes are made in the threaded sleeve of the cover, the lower part of which is inclined at an angle of 25-30 ° to the axis of the sprinkler nozzle and connecting the inter-blade space with the atmosphere. 2. Nozzles according to claim 1, characterized in that it is made with the possibility of dismantling and has a pair between the body and the blade contour along an arc of a circle. 3. Nozzles according to claim 1, characterized in that a protrusion in the form of a hexagon for the size of a key is provided in the lower part of the deflector.

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