JPH0734945U - Spray nozzle for spraying - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a spray nozzle for spraying. According to the invention, a base end circular hole having a press-fitting concave portion, a tangential flow groove, and a tapered surface is formed on the back surface of a nozzle surface wall provided at the tip of a water flow pipe body, and the tangential flow groove is a base end circular hole. It is formed in a direction substantially along the tangential line of the peripheral edge.Therefore, water that has entered the tangential flow groove from the press-fitting recess penetrates the tapered surface of the proximal circular hole tangentially from the peripheral edge and rotates in a spiral shape to form a fine mist. It becomes a shape and is ejected from the small hole 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a spray nozzle for spraying.

[0002]

[Prior art]

 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]

[Problems to be solved by the device]

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

[0004]

[Means for Solving the Problems]

 In this invention, a plurality of small holes are formed at eccentric positions on the nozzle surface wall of the nozzle portion, a diffusion hole having a diameter larger than the small hole is provided at the tip of the small hole, and a diffusion hole having a diameter larger than the small hole is provided at the base end of the small hole. A base circular hole is provided, the bottom surface of the base circular hole forms a narrow tapered surface toward the small hole, and a circular press-fitting recess 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 circular holes in a direction substantially along the peripheral tangent line of the base circular holes, and on the back surface of the nozzle face wall. , The press-fitting recess, tangential flow groove, base end circular hole, etc. are held to press-contact the back plate, and a communication hole communicating with the press-fitting recess is bored in the center of the back plate, and further at the rear of the nozzle part. Is constructed so that the open end of the water passage pipe is joined to the back surface of the nozzle surface wall by connecting the water passage pipes, and an on-off valve is provided in the middle of the water passage pipe for spraying water for spraying. Is intended to St. provides a cheat.

Further, the back plate provided on the back surface of the nozzle surface wall serves as a spraying water spray nozzle that is pressed against the back surface of the nozzle surface wall by a spring interposed between the water passage tube and the back plate.

Further, the nozzle face wall is joined to the tip of the water passage pipe behind 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 at the periphery of the nozzle face wall. A large number of water holes are provided so that the water spray hole and the water spray chamber are in communication with each other, and further, a cylinder is continuously provided on the rear surface of the back plate, and the cylinder and the distal end cylindrical portion of the water passage pipe can slide freely. A spray nozzle for spraying, which is configured to form a running water gap communicating with the water spray chamber between the cylinder of the back plate and the distal end of the water pipe by the forward movement of the nozzle face wall. It is intended to be provided.

[0007]

[Action]

 In this device, the water sent from the water pipe passes through the communication hole in the center of the back plate, flows from the press-fitting recess to the proximal circular hole between the back face of the nozzle wall and the front face of the back plate. Reach

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, they gather in a small hole that is the central top of the taper, and then scatter into 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 tip end cylindrical portion of the water passage pipe body to form a running water gap between them, the water supply from the water passage pipe body is Part of the water will flow from the communication hole to the back of the nozzle face 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 surface 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 water spray is opened and closed by operating an on-off valve provided in the middle of the water pipe.

[0012]

【Example】

 FIG. 1 is a sectional side view of a sprinkler having a spraying nozzle for spraying according to the present invention, in which a nozzle portion 2 is provided at the tip of a water flow pipe body 1. The water pipe 1 is provided with an opening / closing valve 3 in the middle of a tubular shape, and a hose 5 is connected to the rear end of the water pipe 1 via a connecting pipe 4.

The nozzle part 2 is composed of a nozzle face wall 6 threadedly connected to the tip end opening of the water flow pipe body 1, and a back plate 7 pressed against the back face of the nose face wall 6.

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 proximal circular hole 10 forms a small hole 8, that is, a tapered taper surface 11 toward the center of the circular hole, and a circular surface is formed at the center of the back surface of the nozzle surface wall 6. The press-fitting recesses 12 are formed, and from the circular press-fitting recesses 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 the peripheral edges of the base circular hole 10. It communicates with the base circular hole 10 in a direction substantially along the tangent line.

As described above, the press-fitting concave portion 12 is provided in the central portion on the back surface of the nozzle surface wall 6, and the tangential flow groove 13, the base circular hole 10, and the small hole 8 are provided in communication with the concave portion 12. A back plate 7 is crimped to the back surface of the nozzle face wall 6, and a communication hole 14 is provided at the center of the back plate 7 so as to correspond to the press-fitting concave portion 12, and the communication hole 14 is the water flow pipe body 1. It has a function of sending water from the water flow pipe 1 to the back surface of the nozzle face wall 6 by communicating with.

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 tangential direction, and by the action of the taper surface 11, it is rotated 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 be jetted and scattered.

FIG. 3 shows a modification of the nozzle portion 2, which includes a diffusion hole 9, a small hole 8, a base circular hole 10, a tapered surface 11, a tangential flow groove 13, and a press-fitting recess provided in the nozzle surface wall 6. 12 and the like are the same as those in FIG. 1 and FIG. 2, but the back plate 7 crimped to the back surface of the nozzle face wall 6 is provided with a cylindrical body 15 continuously rearward, and in the cylindrical body 15, The tip end tubular portion 16 of the water flow pipe 1 is slidably fitted in a sliding manner, and a spring 18 is provided between the step portion 17 formed on the inner wall of the tip end tubular portion 16 and the back plate 7 rear surface. The back plate 7 is interposed and biased by a spring 18 against the back surface of the nozzle surface wall 6.

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 a front peripheral edge portion of the water sprinkling case 20 has an outer peripheral edge portion of the nozzle face wall 6. Are screwed together, and the nozzle surface wall 6 is configured to move forward from the tip of the water passage tube 1 by the rotation of the nozzle surface wall 6.

A large number of water sprinkling holes 21 are formed in the peripheral portion of the nozzle face wall 6 at positions corresponding to the water sprinkling chambers 19. Therefore, when the nozzle face wall 6 is rotated and moved forward, the back plate 7 and the spring 18 also move. By the urging force, the nozzle body wall 6 advances together with the nozzle surface 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 and reaches the water spray chamber 19 and is sprayed from the water spray holes 21.

As shown in FIG. 4, the rear end outer peripheral edge of the cylindrical body 15 of the back plate 7 is formed in a gear shape, and each tooth body 15-1 has an inclined surface 15-2 formed inside. Therefore, the water from the distal end cylindrical portion 16 of the water flow pipe 1 is sent to the sprinkling chamber 19 from between the tooth bodies 15-1.

The embodiment of the present invention is configured as shown in FIGS. 1 and 3, and the water supply from the water pipe 1 is formed on the back surface of the nozzle surface wall 6 along the taper surface 11 of the base circular hole 10. It rotates in a spiral shape and becomes a fine mist-like fountain, which comes out from the small holes 8, so that a fine mist-like water spray can be easily and surely obtained. In the example, the nozzle surface wall 6 is rotated and moved forward to form a 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 water is sprinkled from the running water gap S. Water can also be sprayed from the water spray holes 21 through the chamber 19, and it is possible to use both fine mist and shower spraying of a certain size.

[0024]

[Effect of device]

 According to this invention, when the water from the water pipe reaches the back surface of the nozzle surface wall, the water flows radially into the tangential flow groove from the press-fitting recess of the nozzle surface wall, and then tangentially penetrates from the flow groove into the base circular hole. It enters into a spiral shape along the taper surface and can be ejected from the small holes in a fine mist shape. Also, when the nozzle surface wall is rotated and moved forward, the back plate cylinder and the water pipe tip end cylindrical shape. A water gap is formed between the water flow path and the section, and the shower water can be sprayed from the water flow hole through the water flow gap, and selectively sprays fine mist and shower water. Or there is an effect that can be done at the same time.

[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 a cross-sectional view of another embodiment.

FIG. 4 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 (3)

[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. A recess, a tangential flow groove, a base-end circular hole, etc. are held to press-contact the back plate, and a communication hole communicating with the press-fit recess is bored in the center of the back plate. A spraying nozzle for spraying, which is constructed by joining the open ends of the water pipes to the back surface of the nozzle face wall by connecting the water pipes in series, and by providing an opening / closing valve in the middle of the water pipes. . 2. The spray nozzle for spraying according to claim 1, wherein the back plate provided on the back surface of the nozzle surface wall is pressed against the back surface of the nozzle surface wall by a spring interposed between the back surface plate and the water pipe. 3. The nozzle face wall is joined to the front end 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 front end of the water passage pipe, and to sprinkle water around the periphery of 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. 2. The spray according to claim 1, wherein the spray fits so as to form a running water gap communicating with the sprinkling chamber between the tubular body of the back plate and the distal tubular portion of the water pipe by the forward movement of the nozzle face wall. Sprinkler nozzle.