JP2518974Y2 - Spray nozzle for spraying - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a spray nozzle for spraying.

[0002]

2. Description of the Related Art Conventionally, as a water spray nozzle, there is a nozzle in which a large number of small holes are provided at the tip of the nozzle so that water can be sprayed.

[0003]

However, it is difficult to form a spray-like water spray with a large number of small holes evenly over a wide area, and since the spray cannot be finely sprayed, much water is wasted. If the small holes at the tip of the nozzle are made fine, the fountain pressure will become high, making it difficult to spray water in a spray form, and the excessive spraying will also have an adverse effect on the plants.

[0004]

According to the present invention, a plurality of small holes are formed at an eccentric position of a nozzle surface wall of a nozzle portion, and a diffusion hole having a diameter larger than that of the small hole is provided at the tip of the small hole. A base circular hole having a diameter larger than the small hole is provided at the base end, and the bottom surface of the base circular hole forms a narrow tapered surface toward the small hole, and a circular shape is formed at the center of the back surface of the nozzle surface wall. A plurality of tangential flow grooves are formed radially from the press-fitting recesses, and the tips of the flow grooves communicate with the base circular holes in a direction substantially along the peripheral tangent line of the base circular holes, On the back surface of the nozzle face wall, a back plate is pressed by holding a press fitting recess, a tangential flow groove, a base end circular hole, etc., and a communication hole communicating with the press fitting recess is bored in the center of the back plate. In the rear part of the nozzle part, a water pipe is connected so that the open end of the water pipe is joined to the back surface of the nozzle face wall, and an opening / closing valve is provided in the middle of the water pipe. It has been set.

Moreover, the back plate provided on the back surface of the nozzle face wall provides a spraying nozzle for spraying which is brought into pressure contact with the back face of the nozzle face wall by a spring interposed between the water flow pipe body and the back plate.

Further, the nozzle face wall is joined to the tip of the water passage pipe at the rear of the nozzle part and the front and rear slide itself to form a sprinkling chamber on the outer periphery of the tip end of the water passage pipe, and water is sprinkled around the nozzle face wall. A large number of holes are provided so that the water sprinkling hole and the water sprinkling chamber are in communication with each other, and further, a cylindrical body is connected to the rear surface of the back plate so that the cylindrical body and the distal end cylindrical portion of the water flow pipe body can slide freely. Provided is a spray nozzle for spraying, which is loosely fitted and configured to form a running water gap communicating with a water spray chamber between a tubular body of a back plate and a distal end tubular portion of a water pipe by forward movement of a nozzle face wall. It is something to do.

[0007]

In this device, the water sent from the water pipe is
It passes through the communication hole in the center of the back plate, flows from the press-fitting recess to the tangential flow groove between the nozzle face wall back surface and the back plate front surface, and reaches the base end circular hole.

Since the tangential flow groove is provided along the peripheral tangent line of the base circular hole, water flows in from the peripheral portion of the base circular hole and swirls along the tapered surface of the base circular hole. While rotating in a circular shape, it gathers in the small hole that is the top of the central taper, and is scattered in the form of a fine mist from the small holes. To go.

Further, when the nozzle face wall is advanced from the water passage pipe body and slid from the tubular body of the back plate from the distal end tubular portion of the water passage pipe body to form a running water gap therebetween, water is supplied from the water passage pipe body.
Part of the water will flow from the communication hole to the back surface of the nozzle surface wall, and the other part will reach the water spray chamber from the water flow gap and will be sprayed from the water spray hole.

Therefore, in the central portion of the nozzle face wall, fine mist-like water is sprayed from the small holes, and at the same time, in the peripheral portion, a large amount of water is sprayed from the water spray holes.

The opening and closing of the water spray is performed by operating an opening / closing valve provided in the middle of the water pipe.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 is a sectional side view of a sprinkler having a spray nozzle for spraying according to the present invention, in which a nozzle portion 2 is provided at the tip of a water pipe 1. The water pipe 1 is provided with an opening / closing valve 3 in the middle of the tube, and a hose 5 is provided at the rear end of the water pipe 1 via a connecting pipe 4.
Are connected.

The nozzle portion 2 is composed of a nozzle face wall 6 threadedly connected to the tip end opening of the water passage pipe 1, and a back plate 7 pressed against the back face of the nozzle face wall 6 by a spring 18.

As shown in FIG. 2, the nozzle surface wall 6 is provided with four small holes 8 at eccentric positions at equal intervals, and diffusion holes 9 having a larger diameter than the small holes are provided at the tips of the small holes 8. A base circular hole 10 having a diameter larger than that of the small hole 8 is provided at the base end of the small hole 8.

The bottom surface of the base circular hole 10 forms a narrowed tapered surface 11 toward the small hole 8, that is, the center of the circular hole,
A circular press-fitting recess 12 is formed at the center of the back surface of the nozzle surface wall 6.
From the circular press-fitting concave portion 12, a plurality of tangential flow grooves 13 are formed radially at equal intervals in four directions, and the tips of the flow grooves 13 are substantially along the peripheral tangent line of the base circular hole 10. Base hole in the direction
It communicates with 10.

On the back surface of the nozzle face wall 6, as described above, the press-fitting concave portion 12 is provided in the central portion, and the tangential flow groove 13, which communicates with the concave portion 12,
A base end circular hole 10 and a small hole 8 are provided, and a back plate 7 is pressure-bonded to the back surface of the nozzle face wall 6 as described above.
A communication hole 14 is provided in the center of the corresponding to the press-fitting concave portion 12, and the communication hole 14 communicates with the water passage tube 1 and has a function of sending water from the water passage tube 1 to the back surface of the nozzle face wall 6. Fulfill.

The water sent to the back surface of the nozzle face wall 6 is sent from the press-fitting recess 12 to the tangential flow groove 13 and reaches the proximal circular hole 10. It is communicated with the base circular hole 10 along the peripheral edge tangential direction, and by the action of the tapered surface 11, it rotates from the peripheral edge of the base circular hole 10 in a spiral shape to reach the small hole 8 at the top of the taper, and the small hole 8 It will become fog and will be ejected and scattered.

In addition, the back plate 7 which is pressure-bonded to the back surface of the nozzle face wall 6 is provided with the tubular body 15 continuously rearwardly.
A distal end tubular portion 16 of the water passage tube 1 is slidably fitted in the inside of the water passage 15, and a step portion 17 formed on an inner wall of the distal end tubular portion 16 is provided.
A spring 18 is interposed between the back plate 7 and the back face thereof, and the back plate 7 is pressed and urged against the back face of the nozzle face wall 6 by the spring 18.

Further, a water sprinkling case 20 is provided on the outer periphery of the tip end portion of the water flow pipe body 1 so as to form a water sprinkling chamber 19, and the outer peripheral edge portion of the nozzle face wall 6 is provided at the front peripheral edge portion of the water sprinkling case 20. The nozzle surface wall 6 is screwed, and the nozzle surface wall 6 is configured to advance from the tip of the water flow pipe body 1 by the rotation of the nozzle surface wall 6.

A large number of water spray holes 21 are formed in the peripheral portion of the nozzle face wall 6 at positions corresponding to the water spray chambers 19. Therefore, when the nozzle face wall 6 is rotated and moved forward, the back plate 7 and the spring 18 also move. Due to the urging force, the nozzle body wall 6 advances together with the nozzle face wall 6, and the tubular body 15 loosely fitted to the distal end tubular portion 16 separates from the distal end of the distal tubular portion 16 of the water passage tube 1, and a running water gap S is formed therebetween.

From the running water gap S, the water sent through the water flow pipe body 1 enters into the water spray chamber 19 and is sprayed from the water spray holes 21.

As shown in FIG. 3, the cylinder 15 of the back plate 7
The outer peripheral edge of the rear end is formed in a gear shape, and each tooth body 15-1 is formed with an inclined surface 15-2 on the inner side, and the distal end tubular portion of the water pipe body 1 is formed.
The water from 16 is sent to the sprinkling chamber 19 from between the tooth bodies 15-1.

The embodiment of the present invention is constructed as shown in FIGS. 1 and 2, and water is supplied from the water pipe 1 along the taper surface 11 of the base circular hole 10 on the back surface of the nozzle surface wall 6. It rotates spirally and becomes a fine mist-like fountain and comes out from the small holes 8, so that fine mist-like water spray can be easily and surely obtained. Furthermore, the embodiment of FIG. In the above, the nozzle surface wall 6 is rotated and advanced to form the running water gap S between the tubular body 15 of the back plate 7 and the distal end tubular portion 16 of the water flow pipe body 1, so that the running water gap S is passed from the running water gap S to the sprinkling chamber 19 Watering holes through
As a result, water sprinkling can be performed from 21 as well, and it is possible to perform water spraying in combination with fine mist and shower water sprinkling of a certain size.

[0024]

According to the present invention, when the water from the water passage pipe enters the tubular body from the distal tubular portion, the back plate at the tip of the tubular body is pressed and urged against the back surface of the nozzle face wall by the spring. Therefore, when the water reaches the back surface of the nozzle surface wall through the communication hole in the center of the back plate, it flows radially into the tangential flow groove from the press-fitting concave portion of the nozzle surface wall, and tangentially enters the proximal circular hole from the flow groove to taper. It becomes a spiral shape along the surface and can be ejected from the small holes in a fine mist shape, and when the nozzle surface wall is rotated and advanced,
A running water gap is formed between the tubular body of the back plate and the tip end tubular portion of the water flow pipe, and shower water can be sprayed from the water flowing hole into the sprinkling chamber. There is an effect that water spraying and shower watering can be performed selectively or simultaneously.

[Brief description of drawings]

FIG. 1 is a sectional view of a spray nozzle for spraying of the present invention.

FIG. 2 is a cross-sectional rear view of the nozzle surface wall taken along the line II of FIG.

FIG. 3 is an explanatory view of a cylindrical body 15.

[Explanation of symbols]

 1 Water pipe 2 Nozzle part 6 Nozzle surface wall 7 Back plate 8 Small hole 10 Base circular hole 11 Tapered surface 12 Press-fitting recess

Claims (2)

(57) [Scope of utility model registration request] 1. A plurality of small holes are formed at an eccentric position of a nozzle surface wall of a nozzle portion, a diffusion hole having a diameter larger than the small hole is provided at a tip of the small hole, and a diameter larger than the small hole is provided at a base end of the small hole. A base circular hole is formed, a bottom surface of the base circular hole forms a narrow tapered surface toward the small hole, and a circular press-fitting concave portion is formed at the center of the back surface of the nozzle surface wall. A plurality of tangential flow grooves are formed radially from the press-fitting recess, and the tips of the flow grooves communicate with the base end circular hole in a direction substantially along the peripheral tangent line of the base end circular hole. While holding the recess, tangential flow groove, base circular hole, etc., the back plate is pressure-welded, and the back plate is interposed between the back pipe and the water passage tube.
It is pressed against the back surface of the nozzle surface by pulling, and at the center of the back plate, a communication hole communicating with the press-fitting recess is formed.
At the rear of the nozzle part, a water pipe is connected so that the open end of the water pipe is joined to the back of the nozzle face wall, and an on-off valve is provided in the middle of the water pipe for spraying. Watering nozzle. 2. The nozzle surface wall is a water passage tube behind the nozzle portion.
The front end of the water pipe is joined to the front end of the
A sprinkler chamber is formed on the
A large number of water holes are provided so that the water holes and the water spray chamber are in communication with each other.
, A cylinder is continuously provided on the rear surface of the back plate, and the cylinder and the water pipe
The tip end of the nozzle is slidably fitted and the nozzle face wall advances.
By operation, between the cylinder of the back plate and the tip of the water pipe
It must be configured to form a running water gap that communicates with the sprinkler chamber.
The spray nozzle for spraying according to claim 1 .