JPH08107728A - Liquid-scattering head of liquid scattering apparatus - Google Patents

Abstract

PURPOSE: To provide a liquid-scattering head formed in nearly semi-spherical form which is upwards protruded, equipped with plural holes, etc., capable of scattering a liquid into a scattering region, capable of throughout scattering without attaching waterdrops to fruits, hardly developing insect pests and suitable for orchards, etc. CONSTITUTION: This liquid-scattering head 1 of a liquid-scattering apparatus is provided on a riser of the apparatus and formed in nearly semi-spherical form which is upwards protruded and has plural holes 2 capable of scattering the liquid into a scattering region and is provided with a liquid flow changing member 20a for colliding against liquid released from holes 2 positioned near the top of nearly semi-spherical surface 1a to change the flow direction. Furthermore, the liquid scattering head 1 has preferably a control member 20b capable of controlling the position of the liquid flow changing member 20a to nearly semi-spherical surface 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid spraying head of a liquid spraying device for spraying a liquid.

[0002]

2. Description of the Related Art Conventionally, for example, irrigation of fields, vegetable gardens, vinyl greenhouses, orchards, parks and gardens where lawns and flowers have been planted, or watering roads, etc. A sprinkler is known as a water sprinkler used in the.

Generally, a sprinkler sprays water from a nozzle (hole) formed in a sprinkler head (hereinafter referred to as a head) rotatably provided at the center of a sprinkler region where water is desired to be sprinkled. In addition, the water sprayed from the nozzles is applied to the blades attached to the head, and the impact force causes the head to rotate in a certain direction to spray water concentrically over a wide range.

[0004]

However, in the sprinkler head which is the above-mentioned conventional sprinkler, the sprinkler region has a concentric circle shape (donut type) centering on the sprinkler. Therefore, for example, in the case where the sprinkling area for which sprinkling is desired is a rectangle such as a rectangle or a square, water cannot be sprinkled at the corners of these areas. Also, the sprinkler is
Although it is possible to sprinkle water over a wide area, there is a problem that water cannot be sprinkled near the sprinkler. In addition, in order to prevent the non-sprinkling area from occurring, it is necessary to install a plurality of sprinklers so that part of the sprinkling areas overlaps each other. Occurs.

Further, when the sprinkler is used as a watering device for an orchard, water sprayed from a nozzle and hitting the blades is scattered above the head, so that water drops adhere to the fruit,
The fruit is always wet. For this reason, so-called pest damage is likely to occur, such as mold growing on the fruit and propagation of pathogenic bacteria. That is, there arises a problem that the quality and yield of fruits are lowered.

Further, when the sprinkler is used as a sprinkler for a vinyl house, the angle of the nozzle is adjusted downward so that the water sprayed from the nozzle does not hit the ceiling part of the vinyl house (so-called height limitation). Must. For this reason, the impact of the water sprayed from the nozzle on the surface of the soil or the like becomes large, and the water droplets bounce off, making it difficult to gently spray water. That is, there is a problem that water cannot be sprayed regardless of so-called height restriction.

Therefore, the liquid can be sprayed over the entire surface of the spraying area of any shape and size, and for example, a head that can be suitably used in an orchard or a vinyl house with so-called height limitation, That is, the sprinkling head of the liquid sprinkling device is required.

[0008]

According to a first aspect of the present invention, there is provided a liquid sprinkling head of a liquid sprinkling device, which is provided on a rising pipe of the liquid sprinkling device in order to solve the above problems. The liquid-spreading head is formed in a substantially hemispherical shape that is convex upward, and has a plurality of holes through which liquid can be sprayed in the spraying area, and is located near the top of the substantially hemispherical surface. It is characterized by comprising a liquid flow changing member which collides with the liquid discharged from the hole and changes its flow direction.

In order to solve the above-mentioned problems, the liquid sprinkling head of the liquid sprinkling device according to the second aspect of the present invention is the liquid sprinkling head of the liquid sprinkling device according to the first aspect, in which the liquid flow is about a hemispherical surface. It is characterized by having an adjusting member capable of adjusting the position of the changing member.

[0010]

According to the first aspect of the invention, the sprinkling head has a plurality of holes through which the liquid can be sprinkled in the sprinkling area. Therefore, the flight distance of the liquid can be freely set at the hole formation position on the hemispherical surface, and, for example, by appropriately changing the formation pattern of the holes, it is possible to change the flight distance according to the shape and size of the spray area. It becomes possible to spray liquid. Further, the sprinkling head includes a liquid flow changing member that collides with the liquid discharged from the hole located near the top of the substantially hemispherical surface and changes the flow direction thereof. Therefore, the liquid discharged from the hole located in the vicinity of the top will not be scattered above the sprinkling head.

As a result, the liquid can be sprayed over the entire surface of the spraying area of any shape and size, and it can be preferably used in, for example, an orchard or a vinyl house with so-called height restriction. That is, for example, when the liquid spraying device is used as a watering device in an orchard, since water does not splash above the spraying head, water droplets do not adhere to the fruit and the fruit is always kept dry. Be done. Therefore, so-called pest damage is less likely to occur, and fruit quality and yield are maintained. In addition, for example, when the liquid spraying device is used as a watering device for a vinyl house, water does not splash above the liquid head, so that the water does not hit the ceiling part of the vinyl house. For this reason,
Water can be sprayed regardless of so-called height restrictions.

According to the second aspect of the invention, the sprinkling head has an adjusting member capable of adjusting the position of the liquid flow changing member with respect to the substantially hemispherical surface. Therefore, the liquid flow changing member can arbitrarily change the flow direction of the liquid discharged from the hole located near the top of the substantially hemispherical surface.

As a result, the liquid can be sprayed over the entire surface of the spraying area of any shape and size, and the flow direction of the liquid can be appropriately adjusted depending on the height of the orchard or the vinyl house. Since it can be changed, it can be used more suitably in the orchard or a vinyl house.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS. In the following description, the case where the liquid sprayed by the liquid spraying device is water, that is, the case where the liquid spraying device is used as a water spraying device will be taken as an example.

As shown in FIG. 5, a water sprinkler as a liquid sprinkler according to this embodiment is provided with a rising pipe 11 for introducing water from a water pipe 10. The rising pipe 11 is erected at an arbitrary position on the soil or the like (spraying area) where watering is desired. At the upper end of the rising pipe 11,
A sprinkling head (sprinkling head) 1 is detachably attached via an attachment jig 12. The mounting jig 12
Has a threaded portion (female screw) (not shown) corresponding to a threaded portion 1b (described later) of the sprinkling head 1.

As shown in FIGS. 3 and 4, the sprinkling head 1, which is the sprinkling head main body, is attached to the mounting jig 12 and the hemispherical portion 1a formed in a substantially hemispherical convex shape. It is composed of a screw portion (male screw) 1b and a continuous portion 1c for continuously connecting the hemispherical portion 1a and the screw portion 1b. Further, the sprinkling head 1 is provided with a changing member 20 (FIG. 1, which will be described later), and a mounting hole 3 for attaching the changing member 20 is provided at the top of the hemispherical portion 1a. In the present invention, the term “generally hemispherical” means that the shape of the longitudinal cross section of the hemispherical portion 1a (the cut surface in the direction perpendicular to the paper surface in FIG. 3) is a substantially semicircular arc shape or a substantially semielliptical arc shape. And

The connecting portion 1c has a shape, for example, a regular octagon when the sprinkling head 1 is viewed from above (FIG. 3) so that the sprinkling head 1 main body can be easily attached to and detached from the mounting jig 12. Has been formed. A plurality of holes 2 ... Can be sprinkled on the soil or the like in the hemispherical portion 1a. The number of the holes 2 ... Is not particularly limited. Further, the size of the watering head 1 is not particularly limited.

The holes 2 ... Are drilled in the following drilling pattern, for example. That is, hole 2 ...
Are a plurality of virtual lines 9 that intersect each other at the top of the hemispherical portion 1a (that is, the center of the mounting hole 3) and extend substantially radially along the surface (substantially hemispherical surface) of the hemispherical portion 1a (in FIG. 3). ,
For the sake of convenience, only three imaginary lines will be indicated by chain double-dashed lines.
The remaining virtual lines are omitted). Also,
The holes 2 formed on one imaginary line 9 are formed such that the diameter thereof increases with increasing distance from the top.

However, the hole 2 formed on one virtual line 9
The holes may be formed such that their diameters gradually increase as they move away from the top portion, or some adjacent holes 2 may be formed so that their diameters are equal to each other.

The pattern of the virtual lines 9 ... In the sprinkling head 1 shown in FIG. 3, that is, the drilling pattern of the holes 2 ... shows an example in which the shape of the soil or the like for which sprinkling is desired is square. There is. Therefore, the drilling pattern of the holes 2 ... Is not limited to the pattern illustrated in FIG.

The diameter of the holes 2 ... Is not particularly limited, but is preferably 0.1 mm or more and 2 mm or less for the following reason. That is, in general, it is known that the water droplets fly in the air under a drag force proportional to the square of the velocity. Therefore, if the water pressure and the diameter of the hole 2 are constant, the water droplets sprayed from the hole 2 are It flies farthest when the elevation angle of 2 is set to about 30 °. Also, since the water droplets spread as the flight distance increases,
The watering area spreads. That is, when the water pressure and the diameter of the hole 2 are constant, the water spraying area becomes smaller as the elevation angle of the hole 2 becomes larger, so that the water spraying amount per unit area increases. Therefore, in order to make the amount of water sprayed per unit area substantially constant over the entire watering area, for example, the diameter of the hole 2 drilled at a position away from the top, that is, the hole 2 having a small elevation angle is drilled near the top. It must be larger than the diameter of the hole 2 provided, that is, the hole 2 having a large elevation angle.

Then, as described above, the diameter of the holes 2 ...
By forming it to be 0.1 mm or more and 2 mm or less, the water droplets sprinkled from the holes 2 ... Are reduced and the impact of the water droplets on the surface of soil or the like is reduced. Therefore, it is possible to gently spray water without causing water droplets to bounce off. If the diameter of the holes 2 ... Is smaller than 0.1 mm, the water droplets sprayed from the holes 2 ... become too small, and the rate of atomization increases, so that the particles cannot fly further. Also, since the amount of water sprayed per unit area becomes too small,
It will not be possible to sufficiently water the soil. On the other hand, if the diameter of the holes 2 is larger than 2 mm, the water droplets become extremely large, the impact of the water droplets on the surface of the soil and the like becomes large, and the water droplets bounce off and the water is gently sprayed. It gets harder.

The diameter of the holes 2 ... In the present embodiment is, for example, 0.4 mm inside the closed curve (for the sake of convenience, the closed curve is indicated by an alternate long and short dash line) 8a shown in FIG. 3 and outside the closed curve 8a. 0.5 inside the closed curve 8b
mm, 0.6 mm outside the closed curve 8b and inside the closed curve 8c, 0.7 mm outside the closed curve 8c and inside the closed curve 8d, and 0.8 mm inside the closed curve 8e. ing. Of course, the drilling patterns of the holes 2 ... And the diameters of the respective holes 2 ... Are not limited to the drilling patterns and the diameters illustrated above.

As shown in FIGS. 1 and 2, the changing member 2
0 is a water flow changing portion (liquid flow changing member) 20a and a hemispherical portion 1
It includes a screw portion 20b for fixing to a and a mounting portion 20c. The mounting portion 20c is formed so that the shape of the changing member 20 when viewed from above (FIG. 2) is, for example, a regular hexagon so that the changing member 20 main body can be easily attached to and detached from the hemispherical portion 1a.

A male screw (screw thread) is formed in the screw portion 20b, while a female screw (screw groove) corresponding to the male screw is formed in the mounting hole 3 of the hemispherical portion 1a. . Then, the screw portion 20b and the mounting hole 3 constitute an adjusting member. That is, since the adjusting member of the changing member 20 is composed of the male screw and the female screw as described above, it is detachable from the hemispherical portion 1a. Also,
By appropriately adjusting the screwing state of the screw portion 20b with respect to the mounting hole 3, the water flow changing portion 2 with respect to the surface of the hemispherical portion 1a.
0a position, that is, from the surface of the hemispherical portion 1a to the water flow changing portion 20.
The distance to a can be adjusted arbitrarily and steplessly, and with the distance maintained, the changing member 2
It is possible to fix 0.

The water flow changing portion 20a is formed in a disk shape having a predetermined size, and the surface thereof, that is, the lower surface on which water droplets collide is smooth. Then, as shown in FIG. 6, the water flow changing portion 20a collides with water droplets discharged upward from the holes 2a located in the vicinity of the top of the hemispherical portion 1a, and the flow direction thereof is further downward than the horizontal direction. It is designed to be changed to. The size and shape of the water flow changing unit 20a are not particularly limited.

The material of the sprinkling head 1 main body and the changing member 20 is not particularly limited, but a material excellent in weather resistance, impact resistance, chemical resistance, etc. is preferable, for example, metal or synthetic resin, Synthetic rubber is preferred. Examples of the metal include stainless steel. Examples of the synthetic resin include high density polyethylene, medium and low density polyethylene, polypropylene, polyvinyl chloride, polyolefin such as ethylene-vinyl acetate copolymer, acrylonitrile-butadiene styrene resin (ABS resin) and the like, engineering plastics, various kinds. Examples include reinforced plastics. These materials are, for example, watering head 1, that is,
It is appropriately selected depending on the application of the sprinkler.

The method of manufacturing the sprinkling head 1 main body and the changing member 20 is not particularly limited, but a method that is inexpensive and excellent in mass productivity is preferable. For example, when the material is metal, a pressing method is used. In addition, the injection molding method is suitable when the material is synthetic resin or synthetic rubber.

The method of forming the holes 2 ... And the mounting holes 3 is as follows.
Although not particularly limited, a method that is inexpensive and excellent in mass productivity is preferable. For example, so-called laser perforation or drill perforation is preferable.

The riser pipe 11 can be fixed to any position such as soil, but the positions of the holes 2 ... In the hemispherical portion 1a and the hole 2 ... It is preferably fixed to the central part or the corner part of soil or the like.

The water pressure applied to the water sprinkling head 1, that is, the holes 2 is not particularly limited. For example, water pipe 1
If directly connected to 0 in general water pipe, said water pressure becomes approximately 1kg / cm ² ~2kg / cm ² approximately. The water pressure is within a predetermined range, for example, 1 kg / cm ^{2 to} 5 kg / cm ² , preferably 1 kg / cm ² to
The water pressure applied to the holes 2 may be appropriately adjusted by using a pump, a pressure reducing valve, a water stopcock, etc., which can be arbitrarily changed within the range of ² kg / cm ² .

Next, a specific example in which water is sprinkled on the soil using the sprinkling head 1 according to this embodiment will be described. still,
It is assumed that the soil for which watering is desired is a square of 10 m × 10 m, and a rising pipe 11 is erected at the center of the soil to water the soil thoroughly. Therefore, the drilling pattern and the diameter of the holes 2 are set to the drilling pattern and the diameter (FIG. 3) illustrated above. And the hemispherical portion 1a of the watering head 1
The diameter was 56.5 mm, the amount of water was about 17 L / min., And the water pressure applied to the holes 2 was about 2 kg / cm ² . The diameter of the water flow changing portion 20a was set to 21 mm, and the distance from the surface of the hemisphere 1a to the water flow changing portion 20a was adjusted to 4.0 mm.

As a result, the water droplets discharged upward from the holes 2a located in the vicinity of the top of the hemispherical portion 1a collide with the water flow changing portion 20a, and the flow direction thereof is changed further downward than the horizontal direction. It was That is, as shown in FIG. 5, the rising pipe 1 is caused by the water droplets discharged from the holes 2a.
Water could be sprinkled in the vicinity of 1. Further, the water droplets discharged from the holes 2 and not colliding with the water flow changing portion 20a were able to spray water to the rest of the soil, that is, the soil away from the rising pipe 11. Therefore, the watering head 1
It was possible to water the entire surface of the soil.

As described above, the water sprinkling head 1 of the water sprinkling apparatus according to this embodiment has a plurality of holes 2 while the hemispherical portion 1a is formed in a substantially hemispherical shape that is convex upward. For this reason,
The flight distance of the water droplets can be freely set at the position where the holes 2 are formed in the hemispherical portion 1a, and, for example, by appropriately changing the formation pattern of the holes 2 ... According to the shape and size of the soil. It is possible to spray water. Further, the water sprinkling head 1 collides with water droplets discharged upward from the holes 2a located in the vicinity of the top of the hemispherical portion 1a, and changes the flow direction thereof further downward than the horizontal direction. Is equipped with. Therefore, the water droplets discharged from the holes 2a located near the top do not scatter above the water spray head 1.

As a result, water can be sprayed over the entire surface of the spraying area of any shape and size, and
For example, it can be preferably used in an orchard or a vinyl house where there is so-called height restriction. That is, for example, when the sprinkler having the above structure is used for sprinkling water in an orchard, water does not splash above the sprinkling head 1, so that water droplets do not adhere to the fruit and the fruit is always kept in a dry state. Be drunk Therefore, so-called pest damage is less likely to occur, and fruit quality and yield are maintained. Further, for example, in the case of using the sprinkler of the above configuration for watering a vinyl house,
Since the water does not scatter above the sprinkling head 1, the water does not hit the ceiling part of the vinyl house. Therefore, water can be sprayed regardless of the so-called height restriction.

Further, the water sprinkling head 1 of the water sprinkling apparatus according to this embodiment has an adjusting member capable of arbitrarily adjusting the position of the water flow changing portion 20a with respect to the hemispherical portion 1a, that is, the screw portion 20b and the mounting hole 3. ing. Therefore, the water flow changing unit 20a
Can arbitrarily change the flow direction of the water droplets discharged from the holes 2a ... Located near the top of the hemisphere 1a.

As a result, the liquid can be sprayed over the entire surface of the spraying area of an arbitrary shape and size, and the flow direction of the water droplets can be adjusted appropriately depending on the height of the orchard or the vinyl house. Since it can be changed, it can be used more suitably in the orchard or a vinyl house.

In this embodiment, the water flow changing unit 20
Although the case where the lower surface of a is formed to be smooth is given as an example, the above lower surface may be formed to have, for example, minute irregularities. In this case, as shown in FIG.
The water droplets discharged from the holes 2a located near the top of the hemispherical portion 1a and colliding with the water flow changing portion 20a are dispersed to some extent by the lower surface having minute irregularities (in the figure,
For convenience, the dispersed state is indicated by hatching), and the flow direction is changed further downward than the horizontal direction.
Thereby, water can be sprayed more uniformly in the vicinity of the rising pipe 11.

Further, in the present embodiment, the water flow changing unit 2
Although the case where 0a is formed in a disk shape, that is, a flat plate shape has been described as an example, the water flow changing portion 20a may be, for example, in a spherical shape having a gently convex lower surface as shown in FIG. It may be formed. In this case, the water droplets discharged from the holes 2a located near the top of the hemispherical portion 1a and colliding with the water flow changing portion 20a have a slightly upward flow direction than the horizontal direction (of course, upward movement to the extent that sprinkling is not hindered). ) Is changed. Accordingly, water can be sufficiently sprayed at a position relatively distant from the rising pipe 11.

Further, in the present embodiment, the case where the water flow changing portion 20a, that is, the changing member 20 is attached to the top of the hemispherical portion 1a is taken as an example, but the attaching position of the changing member 20 is set to the hemisphere. It is not limited to the top of the portion 1a. Further, the number of water flow changing units 20a is not limited to one, and may be plural. That is,
The water flow changing portion 20a may be attached to a position (state) where water droplets emitted upward from the holes 2a located near the top of the hemispherical portion 1a can collide.

Further, in this embodiment, the adjusting member is
Although the case where the screw member 20b and the mounting hole 3 are included has been described as an example, the configuration of the adjusting member is not limited to the above configuration. For example, as shown in FIG. 9, the adjustment member may be composed of an insertion portion 21 and a mounting hole 22. That is, the changing member 20 has the insertion portion 21 instead of the screw portion 20b.
And the hemispherical portion 1 a may include the mounting hole 22 instead of the mounting hole 3.

In this case, as shown in FIG. 3A, the engaging projections 23 ...
It suffices to provide a locking groove 24 capable of engaging with the locking projection 23. Further, as shown in FIG. 3B, the locking projection 23 is provided in the mounting hole 22 while the insertion portion 21 is provided with The locking protrusion 23
It suffices to provide locking grooves 24 ... As a result, the changing member 20 has the locking groove 24 in FIG.
By appropriately selecting the locking projection 23 that engages with
Further, in the same figure (b), by appropriately selecting the locking groove 24 with which the locking projection 23 engages, the position of the water flow changing portion 20a with respect to the surface of the hemispherical portion 1a, that is, the hemispherical portion 1a.
The distance from the surface to the water flow changing unit 20a can be adjusted stepwise. In addition, the adjusting member is provided with the insertion portion 21 and the mounting hole 2
2 and the insertion portion 2 made of an elastic material.
It is preferable to form 1 and the hemispherical portion 1a. Thereby, both are slightly elastically deformed at the time of engagement, and the insertion portion 21 is sufficiently locked to the hemispherical portion 1a.

In this embodiment, the changing member 20 is detachably attached to the hemispherical portion 1a.
That is, although the configuration including the adjusting member is illustrated, when it is not necessary to attach and detach the changing member 20 depending on the application of the sprinkler, the changing member 20 is attached to the hemispherical portion 1a, that is, the water sprinkling head 1 main body. It may be fixed.

In this embodiment, the water sprinkling head 1 capable of sprinkling water over the square soil was taken as an example. However, the shape of the soil which can be sprinkled by the water sprinkling head 1 is, of course, as described above. The shape is not limited to the illustrated square, but may be any shape such as a rectangle, other polygons, a circle, and an ellipse. Also, the size of soil that can be sprinkled can be any size. The combination of the drilling pattern and the diameter of the holes 2 may be appropriately changed according to the shape of the soil, the amount of water sprayed, and the like.

The watering device having the watering head 1 having the above-mentioned structure is, for example, a field for cultivating various vegetables and flowers in the open field, a vegetable garden, a vinyl house, an orchard, a park or a garden in which lawns and flowers are planted. It is preferably used for irrigation or water sprinkling on roads.

In the above embodiment, the case where the liquid sprinkling device is used as the water sprinkling device has been described as an example, but the liquid sprinkled by the liquid sprinkling device according to the present invention is, of course, the above water. It is not limited to. For example, by using the liquid spraying device for agriculture, horticulture, and the like, it is possible to preferably spray agricultural chemicals such as insecticides and fungicides, liquid fertilizers, and the like. In addition, by spraying water, the liquid spraying device can be used as a salt damage control device or a frost damage control device for tea fields.

[0047]

As described above, the liquid spraying head of the liquid spraying device according to the first aspect of the present invention is the liquid spraying head provided on the rising pipe of the liquid spraying device. The part is formed in a substantially hemispherical shape that is convex upward, and has a plurality of holes through which liquid can be distributed in the distribution area, and the liquid is discharged from the holes located near the top of the substantially hemispherical surface. The liquid flow changing member collides with the liquid and changes its flow direction.

As a result, the liquid can be sprayed over the entire surface of the spraying area of any shape and size, and it can be suitably used in, for example, a so-called orchard or a vinyl house where height is limited. That is, for example, when the liquid spraying device is used as a watering device in an orchard, since water does not splash above the spraying head, water droplets do not adhere to the fruit and the fruit is always kept dry. Be done. Therefore, so-called pest damage is less likely to occur, and fruit quality and yield are maintained. In addition, for example, when the liquid spraying device is used as a watering device for a vinyl house, water does not splash above the liquid head, so that the water does not hit the ceiling part of the vinyl house. For this reason,
The effect that water can be sprayed regardless of so-called height restrictions is achieved.

As described above, the liquid sprinkling head of the liquid sprinkling apparatus according to the second aspect of the present invention has the adjusting member capable of adjusting the position of the liquid flow changing member with respect to the substantially hemispherical surface. .

As a result, the liquid can be sprayed over the entire surface of the spraying area of an arbitrary shape and size, and the flow direction of the liquid can be appropriately adjusted according to the height of the orchard or the vinyl house. Since it can be changed, there is an effect that it can be used more suitably in the orchard or a vinyl house.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a sprinkling head as a sprinkling head in an embodiment of the present invention.

FIG. 2 is a plan view of the watering head.

FIG. 3 is a plan view of a main part of the watering head.

FIG. 4 is a front view of a main part of the watering head.

FIG. 5 is a schematic front view of a water sprinkler as a liquid sprinkler having the water sprinkling head.

FIG. 6 is a front view of the watering head.

FIG. 7 is a front view of the water sprinkling head showing a modified example of the water flow changing portion as the liquid flow changing member included in the water sprinkling head.

FIG. 8 is a front view of the water sprinkling head, showing another modification of the water flow changing portion of the water sprinkling head.

9 (a) and 9 (b) each show a modified example of the adjusting member included in the water sprinkling head, and are cross-sectional views of a main part of the water sprinkling head.

[Explanation of symbols]

 1 Water Sprinkling Head (Spraying Head) 1a Hemisphere 2 Hole 2a (Located near the top) 3 Mounting hole (Adjusting member) 11 Rise pipe 12 Mounting jig 20 Changing member 20a Water flow changing unit (Liquid flow changing member) ) 20b Screw part (adjusting member) 20c Mounting part 21 Inserting part (adjusting member) 22 Mounting hole (adjusting member) 23 Locking protrusion 24 Locking groove

Claims (2)

[Claims] 1. A sprinkling head provided on a rising pipe of a liquid sprinkling device, wherein the sprinkling head is formed in a substantially hemispherical shape that is convex upward, and is capable of spraying a liquid in a spraying area. And a liquid flow changing member that collides with the liquid discharged from the holes located in the vicinity of the top of the substantially hemispherical surface and changes the flow direction thereof. The spraying head of the liquid spraying device. 2. The liquid sprinkling head of a liquid sprinkling apparatus according to claim 1, further comprising an adjusting member capable of adjusting the position of the liquid flow changing member with respect to the substantially hemispherical surface.