RU2303869C1 - Dripper - Google Patents

Abstract

FIELD: agricultural amelioration, in particular, equipment used in drop irrigation systems for irrigation on complex relief of perennial plantations of vegetable and berry crops in open ground.

SUBSTANCE: dripper has casing with inlet and outlet openings. Casing is fixed on pipeline wall by means of annular groove dividing casing into upper and lower parts. Casing upper part is located within pipeline. Inlet opening provided in upper part of casing is connected through channel with outlet opening. Casing is made in the form of double-convex disk. Channel provided in upper and lower parts of casing is extending along spiral of right-hand involute of the circle.

EFFECT: improved irrigation quality throughout the entire irrigation season and simplified unwinding and winding onto bobbins upon completing of irrigation works.

2 cl, 2 dwg

Description

The invention relates to agricultural land reclamation and can be used for drip irrigation systems of perennial plantations on complex terrain, vegetable and berry crops in open ground.

A water outlet is known, smon s = R ² / 2k, where R is the radius of the last branch of the spiral in the upper and lower parts 5, 6 of the casing, tinted at the outlet of the pipeline and including a seal and a gap-forming element, in which the seal is installed on the outer surface of the pipeline, and a gap-forming element is freely placed between the seals and the pipeline in the area of the outlet; the seal is made in the form of a ring covering the pipeline; the gap-forming element is made in the form of a loop; the gap-forming element is made of nylon line; the outlet of the pipeline is made in the form of a transverse slot (RU, patent 2056734. C1. IPC ⁶ A01G 25/02. Water outlet / S.P. Bykov (RU). - Application No. 94007028/15; Declared 02.28.1994; Publish. 27.03. 1996).

The described water outlet does not provide a given irrigation rate. With water pressure drops in the pipeline cavity, the gap-forming element does not provide the specified irrigation rate. A sealant in the form of a ring and a gap-forming element in the form of a loop exclude the cleaning of the outlet at the end of the irrigation season.

The closest analogue to the claimed object is a dropper containing a housing with inlet and outlet openings, an elastic membrane, while the upper part of the housing is fixed to the wall of the pipeline, and inside the pipeline there is a part of the housing with a regulatory body, including a channel and a camera, which is made with the possibility of regulation cross-sections in height due to the bending of the elastic membrane, in which the body is made of elastic material, the channel of the regulatory body has a sinusoid shape, and the elastic membrane is fixed Lena, with overlapping channel and chamber (RU, patent №2238638. C. 2. IPC ⁷ A01G 25/02. dropper / A.G.Zhirnov, V.A.Lukasik, G.M.Misharev, O.M.Toloschuk ( RU) .- Application No. 2001109800/12; Stated April 11, 2001; Publish. October 27, 2004).

The disadvantages of the described dropper, adopted as the closest analogue, include high hydraulic resistance in the cavity of the pipeline due to the protruding parts of the housing, low operational reliability of droppers, high cost and poor quality of irrigation.

The essence of the claimed invention is as follows.

The problem to which the claimed invention is directed is to reduce the cost of droppers.

The technical result is an increase in the quality of irrigation.

The specified technical result is achieved in that in a known dropper containing the upper and lower parts of the body fixed to the pipe wall and connected by the inlet and outlet openings, the upper part of the body is located inside the pipeline, according to the invention, the body is shaped like a biconvex disk, and the channel is the upper and lower parts of the body are made in a spiral - the right involute of the circle and is described by parametric equations:

x = k (cosα + sinα);

y = k (sinα-αcosα),

where k is the parameter of the involute of the circle;

α is the angle between the line drawn through the center of the inlet and the geometric center of the outlet, and the radius drawn from the center of the inlet to the point of intersection of the channel with its wall, while the cross-sectional area of the channel decreases in the direction of water movement, and the channel length is determined by the formula S = R ² / 2k, where R is the radius of the last branch of the spiral in the upper and lower parts of the body;

between the upper and lower parts of the body in the form of a biconvex disk, a groove is made along its edging.

The invention is illustrated by drawings.

Figure 1 shows a dropper in the form of a biconvex disk mounted in the hole in the wall of the irrigation pipeline.

Figure 2 - section aa in figure 1, the execution of the channel in the upper and lower parts of the housing in a spiral of the right involute circle for hydraulic connection of the inlet with the outlet.

Information confirming the possibility of implementing the claimed invention are as follows.

The dropper contains a housing 1 with an inlet 2 and an outlet 3. The housing 1 is given the shape of a biconvex disk. The housing 1 is fixed in the hole on the wall of the pipeline 4. The housing 1 includes an upper convex part 5 and a lower convex part 6. Between the upper and lower parts 5 and 6 of the housing 1 in the form of a biconvex disk, an annular groove 8 is made along its edging 7. The housing 1 is made of elastic material, which allows you to place the annular groove 8 in the hole in the wall of the pipe 4.

The upper part 5 of the housing 1 is located inside the pipeline 4. The convex upper part 5 of the housing 1 minimizes the hydraulic resistance of the protruding part 5 inside the pipeline 4. The inlet 2 is perpendicular to the wall of the pipeline 4. This ensures a uniform flow of water into the housing 1 of the dropper. The inlet 2 is connected by a channel 9 to the outlet 3 in the lower part of the housing 1.

Channel 9 in the upper part 5 and lower part 6 of the housing 1 is made by spirals of the right involute of the circle.

The shape of channel 9 is described by parametric equations:

X = k (cosα + αsin);

Y = k (sinα-αcosα),

where k is the parameter of the involute of the circle;

α is the angle between the line drawn through the center of the inlet 2 and the geometric center of the outlet 3, and the radius drawn from the center of the inlet 2 to the point of intersection of the channel 9 with its wall (see figure 2).

The outlet 3 is made in the lower convex part 6 of the housing 1. The convex part 6 of the housing 1 does not prevent the irrigation pipe 4 from winding up at the end of the irrigation season on a special reel. Irrigation pipe 4 with droppers in the form of biconvex disks is stored in a warehouse until next year.

A specific feature of the dropper design is that the cross-sectional area of channel 9 decreases in the direction of water movement, i.e. from the inlet 2 to the outlet 3. This increases the hydraulic resistance along the length of the channel 9.

A dropper works as follows.

When irrigation water is supplied to the cavity of the pipeline 4 under the working pressure, it fills the channel 9 through the inlet 2 and enters the outlet 3. The length of the channel 9 — the arc length of the spiral of involute of the circle — is determined by the formula s = R ² / 2k, where R is the radius the last branches of the spiral in the upper and lower parts 5, 6 of the housing 1. The length of the channel 9 is ten times longer than the outer diameter of the housing 1. When the fluid flows through the channel 9, irrigation water moves to the peripheral part of the housing 1. In the channel 9, the water flow rate is extinguished for reducing you The notes section of the channel towards the outlet opening 3. From the duct 9 the water enters the outlet 3 in the form of drops with a uniform frequency falls on the watered surface. Due to increasing hydraulic resistances along the length of the channel 9, the flow rate of the water flow is completely extinguished and water drops from the cavity of the pipeline 4 in the form of rain drops. This ensures high-quality irrigation of agricultural products. cultures. The dropper design provides its mass production and automation of assembly production.

Claims (2)

1. A dropper containing the upper and lower parts of the body fixed to the pipeline wall with inlet and outlet openings, the upper part of the body located inside the pipeline, characterized in that the body is shaped like a biconvex disk, and the channel in the upper and lower parts of the body is made spirals of the right involute of a circle and described by parametric equations x = k (cosα + αsinα); y = k (sinα-αcosα), where k is the parameter of the involute of the circle; α is the angle between the line drawn through the center of the inlet and the geometric center of the outlet and the radius drawn from the center of the inlet to the point of intersection of the channel with its wall, while the cross-sectional area of the channel decreases in the direction of water movement, and the channel length is determined by the formula s = R ² / 2k, where R is the radius of the last spiral branch in the upper and lower parts of the body. 2. A dropper according to claim 1, characterized in that a groove is made between the upper and lower parts of the body in the form of a biconvex disk along its edging.

Images