CN2401024Y

CN2401024Y - Rotary nozzle

Info

Publication number: CN2401024Y
Application number: CN 99253930
Authority: CN
Inventors: 蒋定生
Original assignee: National Center For Yangling Efficient Irrigation Engineering And Technology Research
Current assignee: National Center For Yangling Efficient Irrigation Engineering And Technology Research
Priority date: 1999-11-29
Filing date: 1999-11-29
Publication date: 2000-10-18
Anticipated expiration: 2009-11-29

Abstract

The utility model relates to a rotary nozzle, which is characterized in that a water flow stabilizer is fixedly arranged in a main spray pipe. The water flow can be separated to flow in a plurality of channels to eliminate the vortex of the water flow, enhances the mechanical property of the water flow, and increases the maximum range. Simultaneously a second secondary spray nozzle can also be added to improve the sprinkling uniformity and the sprinkling quantity and decrease the sprinkling dead area. The utility model has the advantages of simple structure, easy fabrication, and low cost. The utility model is suitable for the water saving irrigation engineering of the agriculture and animal production.

Description

A kind of rotary nozzle

The utility model belongs to the improvement of irrigating with rotating nozzle structure, relates to the Machining Technology field.

Water-saving irrigation project is the important measures of nonirrigated farmland farming and animal husbandry production development, and shower nozzle is a critical component of implementing this project.The shower nozzle great majority that use in irrigating at present are rotary, and two sources of domestic and imported are arranged.Existing rotary nozzle has shown two defectives through production practices, and the one, because the defective of these shower nozzle interiors makes the maximum range of sprinkling far away inadequately, actual maximum range is a 15-18 rice under 400KPa pressure usually; The 2nd, because the defective of nozzle arrangements, make near the sprinkling zone the shower nozzle aproll irregular and water distribution is less.Because these deficiencies.Not only influence the balanced production of field crop, and increased the investment of pipe network in the sprinkling irrigation system, be unfavorable for the enforcement of water-saving irrigation project.

The purpose of this utility model is improved existing rotating nozzle structure exactly, to overcome above-mentioned defective; Have simultaneously simple in structure, make easily, advantage cheaply.

For achieving the above object, the technical solution of the utility model is to be done in such a manner.Designed rotary nozzle is to be set with the current flow straightener in the main jet pipe, this flow straightener can be separated the current in the main jet pipe in several passages mobile, to eliminate the eddy current that current are produced after the shunting changed course by water inlet pipe, and the mechanical property of raising current, the radial dimension of flow straightener should mate with the main jet bore, makes it to be stuck in the main jet pipe to be fixed; The axial dimension of flow straightener is two times of the interior warp of main jet pipe at least.

The concrete structure of described current flow straightener can be diversified, and its common trait is the current in the main jet pipe can be separated in several passages to flow.A kind of is projectile tail shape structure, and it is axially to be vertically installed with demarcation strip on the periphery wall of hollow tube, makes its radial section be the projectile tail shape, and demarcation strip is 3-6 and evenly is provided with; Each demarcation strip front end is concordant with hollow tube, and hollow tube can be longer than in the rear end, and curved to the inboard from the outside.Second kind is the triangle tubular structure, and its radial section is equilateral triangle, is to be stuck in the main jet pipe with arris to be fixed.The flow straightener of the third structure is outwards evenly to be provided with 3-6 demarcation strip radially by its axis; Its inboard can be longer than in the outside of flow straightener tail end demarcation strip, and curved.The flow straightener material of various structures should approach as far as possible, to reduce resistance to water-flow.

Feature of the present utility model also is, the tube wall that designed rotary nozzle can secondary jet pipe is provided with the refraction auxiliary jet that can be fan-shaped spray.Or the tube wall of secondary jet pipe is provided with second auxiliary jet, and is connected to connecting rod on tube wall, is equipped with the aproll impeller at the other end of connecting rod, the outer end of the aproll impeller horizontal that makes progress, and the water of second auxiliary jet ejection can be beaten on impeller blade, and impeller is rotated.

From said structure as can be seen, the rotary nozzle that the utility model is designed is owing to be set with the current flow straightener in the main jet pipe, current in it can be separated in several passages and be flowed, eliminated the eddy current that current are produced by water inlet pipe shunting changed course back, improved the mechanical property of current, thereby increase range, the shower nozzle that flow straightener is arranged through experimental rig is under 400KPa pressure, actual maximum range is a 18-21 rice, so when in water-saving irrigation project, arranging net, can reduce pipe network density, save investment.Owing on rotary nozzle, newly be provided with the 3rd nozzle (i.e. second auxiliary jet), make the irrigation of rotary nozzle spray three zones of formation, main burner sprays regional 10-20 rice, and auxiliary jet sprays regional 5-11 rice, and second auxiliary jet sprays regional 1-6 rice; It has not only increased the irrigated area, and has reduced the sprinkling blind area, and makes the water yield increase and the aproll of shower nozzle near zone even, has improved the uniformity of sprinkler irrigation.The utility model also has advantage simple in structure, that making is easy, cost is low simultaneously.

Accompanying drawing 1 is the structural representation of the designed rotary nozzle of the utility model; Accompanying drawing 2 is the structural representation of designed projectile tail shape flow straightener; Accompanying drawing 3 is an A-A cutaway view among Fig. 2; Accompanying drawing 4 is the radial section view of designed radial flow straightener; Accompanying drawing 5 is the radial section view of designed triangle tubular flow straightener; Accompanying drawing 6 is the designed structural representation that has the secondary jet pipe of the refraction auxiliary jet that can be fan-shaped spray; Accompanying drawing 7 is the designed structural representation that has the secondary jet pipe of second auxiliary jet and aproll impeller; Accompanying drawing 8 is a B-B cutaway view among Fig. 7.1 is main burner among the figure, and 2 is the current flow straightener, and 3 is the main jet pipe, and 4 is secondary jet pipe, 5 are auxiliary jet (belonging to first auxiliary jet), and 6 are the rotation rocking arm, and 7 for being the refraction auxiliary jet (also belonging to second auxiliary jet) of fan-shaped spray, 8 is second auxiliary jet, and 9 is connecting rod, and 10 is the aproll impeller.

Describe the enforcement and the effect of technical solutions of the utility model in detail below in conjunction with accompanying drawing.

The designed rotary nozzle of the utility model can be made by the structure and material of existing shower nozzle, the structure that the utility model is newly-increased such as flow straightener, second auxiliary jet, aproll impeller and connecting rod also can select metal or plastic or other material to make, just when being provided with second auxiliary jet, need the suitably length of the secondary jet pipe of lengthening.Referring to accompanying drawing 1, it is a kind of example of designed rotary nozzle, only is to be provided with the current flow straightener in the main jet pipe, and flow straightener is to be loaded into fixingly from the main jet pipe port, and main burner is installed again, and flow straightener is tightened in the main jet pipe, and current can not drive its rotation; The shower nozzle of this structure through the test, under 400KPa pressure, its average rainfall intensity 3.70m m/h, maximum range 20m, water yield 4.19m ³/ h sprays coefficient of uniformity 0.75.Referring to accompanying

drawing

2 and 3, it is the structural representation of flow straightener among Fig. 1, its radial section is projectile tail shape structure, demarcation strip can adopt inserting slot construction with being connected of hollow tube, or welding, bonding or injection molded, the quantity of demarcation strip is relevant with the internal diameter of main jet pipe, and the passage that the big more requirement of internal diameter is separated is just many more.Referring to accompanying drawing 4, it is radial section flow straightener signal radially, and in like manner the quantity of demarcation strip is relevant with the internal diameter of main jet pipe, and the connection between the demarcation strip can be adopted and insert the assembly structure, or welding, bonding or injection molded.Referring to accompanying drawing 5, it illustrates that for the flow straightener that radial section is equilateral triangle its structure is the triangle tubular, though its making can be inserted assembly or welding, preferably an injection molded by plate.Certainly, flow straightener can also have other version.

Referring to accompanying drawing 6, it is the refraction nozzle for the structural representation of the secondary jet pipe part in the rotary nozzle of pressing Fig. 1 making, its second auxiliary jet, and the water of this nozzle ejection can be fan-shaped sprinkling obliquely upward; The shower nozzle of this structure through the test, under 400KPa pressure, its average rainfall intensity 3.74mm/h, maximum range 19m, water yield 4.38m ³/ h sprays coefficient of uniformity 0.77.Referring to accompanying drawing 7 and 8, it is the structural representation of another kind of secondary jet pipe part, its second auxiliary jet is a plain nozzle, on secondary jet pipe tube wall, connect a connecting rod, the outer end of connecting rod is provided with the aproll impeller, the water of second auxiliary jet ejection is beaten on impeller blade, can impeller rotate, and the impeller of rotation can spill water equably; So-called aproll impeller promptly is in the dull and stereotyped limit portion of a circle some blades to be set vertically radially to form, and is fixed on the connecting rod with axle, between axle and impeller axle sleeve is arranged; The shower nozzle (main body that comprises Fig. 1) that has a this structure is through test, under 400KPa pressure, and its average rainfall intensity 3.19mm/h, maximum range 21m, water yield 4.38m ³/ h sprays coefficient of uniformity 0.79.

Claims

1. rotary nozzle that is used to spray, the secondary jet pipe that it constitutes the main jet pipe that has main burner and has auxiliary jet is characterized in that, is set with the current flow straightener in the main jet pipe, it can be separated in-pipe flow in several passages and flows; The radial dimension of flow straightener and main jet bore mate, and make it to be stuck in the pipe to be fixed, and the axial dimension of flow straightener is two times of main jet bore at least.

2. rotary nozzle according to claim 1 is characterized in that, described current flow straightener structure is, axially is vertically installed with demarcation strip on the periphery wall of hollow tube, makes its radial section be the projectile tail shape, and demarcation strip is 3-6 and evenly is provided with; Each demarcation strip front end is concordant with hollow tube, and hollow tube can be longer than in the rear end, and curved to the inboard from the outside.

3. rotary nozzle according to claim 1 is characterized in that, described current flow straightener is the triangle tubular structure, and its radial section is equilateral triangle.

4. rotary nozzle according to claim 1 is characterized in that, the structure of described current flow straightener is outwards evenly to be provided with 3-6 demarcation strip radially by the axis, and its radial section radially; Its inboard can be longer than in the outside of flow straightener tail end demarcation strip, and curved.

5. according to any rotary nozzle in the claim 1 to 4, it is characterized in that, on the tube wall of secondary jet pipe, also be provided with the refraction auxiliary jet that can be fan-shaped spray.

6. according to any rotary nozzle in the claim 1 to 4, it is characterized in that, the tube wall of secondary jet pipe is provided with second auxiliary jet, and on tube wall, be connected to connecting rod, the other end at connecting rod is equipped with the aproll impeller, the outer end of the aproll impeller horizontal that makes progress, the water of second auxiliary jet ejection can be beaten on impeller blade, and impeller is rotated.