JP2001000887A - Sprinkler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler capable of freely adjusting sprinkling range. SOLUTION: The sprinkler is provided with a cone-shaped recessed part 25 formed in a head member H attached to a flow-out port of the sprinkler main body, a communicating flow passages 27, 28 for communicating the bottom of the recessed part 25 with the flow-out port, a spreading member 30 placed at the center of the recessed part 25 and attached to holding members 26a-26c formed in the head member H, a tapered surface 32 formed in the spreading member 30 and opposed and in parallel to the inclined surface 25a of the recessed part 25 and a spreading flow passage B formed by the gap between the tapered surface 32 and the inclined surface 25a and spreads water along the tapered surface 32 and the inclined surface 25a when spraying water through the passage B. In such a case, a screw part 30a formed in the spreading member 30 and a screw hole 29 formed in the holding part 26b are provided and the screw part 30a of the spreading member 30 is fitted to the screw hole 29 of the holding part 26b to adjust the spreading member 30 in the axis direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler used for watering lawns and plants.

[0002]

2. Description of the Related Art FIGS. 12 to 15 show a conventional sprinkler. As shown in FIG. 12, a sprinkler body a has an outlet 1 for discharging water and a connection port 2 for connecting to a water source.
And a connection port 3 for connecting another sprinkler. The outlet 1, the connection port 2 and the connection port 3 communicate with each other via a flow path 4 formed in the sprinkler body a. Reference numeral 5 denotes an insertion portion, and the sprinkler body a is installed at a watering place by inserting the insertion portion 5 into the ground.

A connection member j is connected to the connection port 2. A hose (not shown) is attached to the connection member j. Then, water is guided into the flow path 4 from a tap (not shown) of the water supply or the like via the hose. In the connection port 3 on the opposite side,
The cap c is attached by screws formed around the cap. The connection port 3 is closed with the cap c. Therefore, the water guided from the connection port 2 to the flow path 4 is
It flows out from the outlet 1 side. In addition, the symbol s in the figure
1 to s3 are seal members.

A head member h is attached to the outlet 1 by screws formed around the outlet. The head member h has a mortar-shaped concave portion 6 whose diameter is increased upward in the drawing, and a through hole 7 communicates with the bottom of the concave portion 6. In the center of the recess 6,
A diffusion pin p for diffusing water is provided. Hereinafter, the mounting structure of the diffusion pin p will be described.

[0005] As shown in FIG. 13, a holding ring 8 is provided at the center of the through hole 7. This retaining ring 8
It is fixed to the head member h by three holding pieces 9. Further, by making the outer diameter of the holding ring 8 smaller than the inner diameter of the through hole 7, a gap is formed between the holding ring 8 and the through hole 7, and this gap is used as the flow path 10.

On the other hand, as shown in FIG. 14, the diffusion pin p is composed of a diffusion portion 11 and a shaft portion 12.
1, a tapered surface 13 for radially diffusing water is formed. Also, at the lower end of the shaft portion 12,
The stopper 14 is formed, and the stopper 1
4, the slit 15 is formed in the axial direction. The diffusion pin p thus configured has its shaft 12 connected to the stopper 14
Side into the holding ring 8 and the shaft 12
Are slidable with respect to the holding ring 8. However, the shaft 12 is prevented from coming off the holding ring 8 by the stopper 14. Note that the slit 15 reduces the diameter of the stopper 14 and
This is for making it easier to insert the shaft portion 12 into the shaft.

[0007] The diffusion pin p attached to the head member h as described above is actuated by water pressure from the outlet 1 side.
It is pushed up in the drawing. Diffusion pin p pushed up
Stops at a position where the stopper 14 comes into contact with the holding ring 8, and at this stopped position, a predetermined gap is formed between the tapered surface 13 of the diffusion portion 11 and the inclined surface 6 a of the concave portion 6. This gap becomes the diffusion channel b. Therefore, the water guided from the outflow port 1 flows out through the flow path 10 → the through hole 7 → the diffusion flow path b.
And the water flowing out of the diffusion channel b in this way is
By hitting the tapered surface 13 of the diffusion part 11, the flow in the axial direction is changed in the radial direction. The water whose direction is changed in the radial direction as described above is separated into water discharged directly to the outside and water guided along the inclined surface 6a of the concave portion 6, and is diffused in the circumferential direction, that is, in the 360-degree direction.

As described above, water is sprinkled from the sprinkler, and the range of water sprinkling depends on the water pressure on the outlet 1 side. In other words, the higher the water pressure on the outlet 1 side, the wider the watering range, and the lower the water pressure, the narrower the watering range. Whether the water shape is atomized or rectified depends on the size of the water droplet, that is, the diameter of the water droplet. For example, to make the water form mist, the diameter of the water droplet is made small, and to make it rectified, the diameter of the water droplet is made large.

The diameter of the water droplet depends on the flow velocity of the flowing water and the degree of opening of the diffusion channel b. That is, the water droplet diameter tends to decrease as the flow velocity increases, and tends to increase as the flow velocity decreases. In addition, the smaller the diffusion channel b, the smaller the water droplet diameter tends to be, and the larger the diffusion channel b, the larger the water droplet diameter. Therefore, if water is made to flow out from the narrow diffusion channel b at a high flow rate, the diameter of the water droplets becomes small, so that water is sprayed in a mist state. Conversely, a wide diffusion channel b
Therefore, if water is made to flow out at a low flow rate, rectified water having a large water droplet diameter will be sprayed.

However, the degree of opening of the diffusion channel b is determined by the length of the shaft 12 of the diffusion pin p.
Therefore, the degree of opening of the diffusion channel b cannot be freely adjusted. Therefore, in this conventional sprinkler, the water pressure is adjusted by a water tap, and thereby the flow rate is changed to adjust the watering range and water shape.

On the other hand, when adjusting the watering range in the circumferential direction, that is, in the 360-degree direction, the head member 16 shown in FIG.
To replace it. This head member 16
The recess 17 is formed only in a range corresponding to the watering angle. Therefore, if the head member 16 is attached to the outlet 1, water can be sprayed in a range corresponding to the angle of the concave portion 17. In addition, the sprinkler as described above,
Remove cap c and connect another sprinkler to connection 3
, So that water can be sprinkled from a plurality of sprinklers at the same time.

[0012]

The conventional sprinkler described above has the following problems because the opening of the diffusion channel b cannot be freely adjusted. For example, when the water form is atomized, a certain flow rate is required, so the water pressure is increased. However, when the water pressure is increased in this manner, the flow velocity of the water naturally increases, and accordingly, the range of watering increases accordingly. Therefore, there was a problem that it was not possible to sprinkle water only in the immediate vicinity of the sprinkler. In other words, in this conventional sprinkler, the water shape must be adjusted only by the water pressure,
At the same time as adjusting the water shape, there was a problem that the watering range could not be adjusted freely.

Further, when the water pressure is increased to make the water flow vigorously, there is a problem that the watering range becomes a donut shape and water is not sprayed to the center portion. That is,
When the water pressure is increased and the water flows out vigorously, the water cannot be sprayed near the head member h because the falling point of the water is far from the head member h. As a result, the watering range becomes donut-shaped, and watering is not performed at the center portion. This was particularly noticeable when watering extensively. Contrary to the above, when the water pressure is reduced and water is sprayed near the head member h, the water droplet diameter becomes large, and the water shape becomes unsuitable for water spray. As a result, there is also a problem that when water is sprayed near the head member h, the water spray amount becomes non-uniform.

Further, when adjusting the watering range in the circumferential direction, as described above, it is necessary to replace the head member 16 with another one. Variation by force.
Therefore, the direction of the concave portion 17 and the desired watering direction often do not match. Therefore, in most cases, the deviation of the direction of the concave portion 17 must be adjusted by re-installing the sprinkler body a, and there is a problem that it takes much time and effort.

Furthermore, when a plurality of sprinklers are connected in series and used, the pressure loss in the flow path causes
The water pressure guided to the sprinkler close to the water source differs from the water pressure guided to the sprinkler far from the water source. That is, a sprinkler closer to the water source has a higher supplied water pressure, and a sprinkler farther from the water source has a lower supplied water pressure. Such different water pressures result in different watering ranges. Therefore, when a plurality of sprinklers are connected in series, there is a problem that water is unevenly distributed and water is hardly sprayed from a sprinkler far from a water source.

When a plurality of sprinklers are connected in series as described above, if the head member 16 is used, it is necessary to reduce the flow velocity by the reduction in the area from which water flows out. However, if the flow velocity is reduced in this way, as described above, there has been a problem that the water droplet diameter becomes large or the flow becomes in a rectified state, resulting in a water shape unsuitable for watering. An object of the present invention is to provide a sprinkler that can solve the above various problems.

[0017]

SUMMARY OF THE INVENTION The present invention provides a sprinkler body, an outlet formed in the sprinkler body, a head member attached to the outlet, a mortar-shaped recess formed in the head member, and a head. A communication channel formed in the member and communicating the bottom of the recess with the outlet, a diffusion member positioned at the center of the recess and attached to a holding portion formed in the head member, and a diffusion member formed in the diffusion member. And a tapered surface substantially parallel to the inclined surface of the concave portion, and a diffusion channel formed between the tapered surface and the inclined surface, and water guided from the outlet to the communication channel. Is premised on a sprinkler that causes water to diffuse along the tapered surface and the inclined surface when the water is discharged to the outside through the diffusion channel.

According to a first aspect of the present invention, there is provided a screw member formed in the diffusion member and a screw hole formed in the holding portion, wherein the screw portion of the diffusion member is attached to the screw hole of the holding portion, and the diffusion member is pivoted. It is characterized in that it can be adjusted in the direction. A second invention is characterized in that the upper end surface of the concave portion is a curved surface. The third invention inserts an adjusting piece into the diffusion channel,
The adjustment piece is sandwiched and fixed between the diffusion member and the recess.

A fourth invention is characterized in that a flow rate adjusting mechanism is connected between the outlet of the sprinkler body and the head member. The fifth invention is characterized in that an extension pipe is connected between the outlet of the sprinkler body and the head member. The sixth invention is characterized in that an extension pipe is connected between the outlet of the sprinkler body and the flow rate adjusting mechanism.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment shown in FIGS.
At the outlet 1 of the sprinkler body a, a flow control valve V
And a head member H is attached to the flow control valve V. However, since the configuration of the sprinkler body a is the same, the same components as those in the conventional example are denoted by the same reference numerals, and the details thereof will be described. Detailed description is omitted.

As shown in FIG. 1, the sprinkler body a
A flow control valve V is screwed to the outflow port 1. As shown in FIG. 2, the flow control valve V has recesses 18 and 19 formed at the top and bottom of the drawing, and the recesses 18 and 19 are communicated via a flow path 20. Further, an adjustment member 21 supported by the seat portions 22 is incorporated in the flow rate adjustment valve V. The adjusting member 21 is provided in the middle of the flow path 20. A flow path 24 is formed in the adjustment member 21, and the recess 18 and the recess 19 are communicated through the flow path 24 as shown in FIG. 2. And this adjusting member 21
Are rotatable about an axis 23.

Therefore, as shown in FIG. 3, when the adjusting member 21 is rotated by 90 degrees to completely cut off the communication between the flow path 24 and the flow path 20, water from the recess 19 side to the recess 18 side can be obtained. The supply can be completely shut off. In addition, channel 2
By adjusting the area of communication between 0 and the flow path 24, the flow rate supplied to the recess 18 can also be adjusted. Note that reference numerals s1 to s6 in the drawing denote sealing members, and these sealing members s
Water leakage is prevented at 1 to s6.

As shown in FIG. 2, a head member H is screwed to the upper part of the flow rate control valve V. The head member H is formed with a mortar-shaped concave portion 25 whose diameter is increased upward. An outflow hole 27 is formed at the bottom of the recess 25. In addition, as shown in FIG. 4, the outer wall of the outflow hole 27 is a cylindrical portion 26a. Below the outflow hole 27, as shown in FIG.
Is provided. Then, a flow rate adjusting screw 30 is attached to the screw hole 29 of the attaching portion 26b.

The mounting portion 26b to which the flow rate adjusting screw 30 is mounted as described above is provided on the cylindrical portion 26a via a plurality of mounting pieces 26c provided at equal intervals in the circumferential direction. A plurality of flow paths 28 are provided between the mounting pieces 26c.
Are formed, and these flow paths 28 communicate with the outflow holes 27. Therefore, the water supplied from the concave portion 18 side of the flow control valve V is guided from the flow path 28 to the concave portion 25 through the outflow hole 27.

On the other hand, the flow rate adjusting screw 30 is of a countersunk screw type, and has a tapered surface 32 on its head 31. The tapered surface 32 and the inclined surface 25a of the concave portion 25 are opposed to each other substantially in parallel, and the gap between the tapered surface 32 and the inclined surface 25a is a diffusion channel B shown in FIGS. . Therefore, the water guided to the outflow hole 27 flows out through the diffusion channel B to the outside. Then, the water flowing out of the diffusion flow path B hits the tapered surface 32 of the flow rate adjusting screw 30 to change the axial flow in the radial direction. The water whose direction has been changed in the radial direction is divided into water directly discharged to the outside and water guided along the inclined surface 25a of the concave portion 25, and is divided into the circumferential direction of the head member H, that is, the 360-degree direction. To spread. The cylindrical portion 26a, the mounting portion 26b, and the mounting piece 26c form a holding portion of the present invention, and the outflow hole 27 and the flow channel 28 form a communication flow channel of the present invention. .

The head member H is, as shown in FIG.
A portion where the inclined surface 25a of the concave portion 25 intersects with the side surface of the head member H, that is, the upper end surface 25b of the concave portion 25 is curved. When the upper end surface of the inclined surface 25a is curved as described above, most of the flow rate guided along the inclined surface 25a flows out in the direction of the arrow 40 in FIG.
Water flows out along the curved surface in the direction of arrow 41 in FIG. 2, that is, below the horizontal direction.

Further, the degree of opening of the diffusion channel B is reduced so that water is made to follow the inclined surface 25a, and the flow control valve B
If the flow rate is reduced by adjusting the water flow rate, water can be formed along the curved surface of the upper end surface 25b. In this way, water can flow out below the horizontal direction, so that water can be sprayed on the side of the head member. Therefore, even if the water pressure is increased and the water is allowed to flow vigorously, the watering range does not become donut-shaped.

According to the first embodiment, the flow rate adjusting screw 3
By turning 0, the position of the head 31 can be adjusted in the axial direction. By adjusting the position of the head 31 in the axial direction in this way, the tapered surface 32 formed on the head 31 and the recess 2
6, that is, the degree of opening of the diffusion channel B can be adjusted. For example, as shown in FIG. 6, the diffusion channel B can be narrowed by screwing the flow rate adjusting screw 29 and moving the head 31 downward in the drawing. If the diffusion channel B is narrowed in this way, the diameter of the water droplets to be sprayed can be reduced without increasing the water pressure.
Therefore, it is possible to spray the atomized water over a narrow area.

By adjusting the flow control valve V, the water pressure in the recess 18 can be adjusted. By adjusting the water pressure in this way, the flow velocity of the water flowing out of the diffusion channel B can be adjusted. Therefore, the water shape and the watering range thereof can be adjusted by the flow control valve V. When the diffusion flow path B is adjusted by the flow rate adjusting screw 30 and the water pressure in the concave portion 18 is adjusted by the adjusting member 21, the watering range and the water droplet diameter can be adjusted more freely.

Further, since the upper end surface 25b of the concave portion 25 is a curved surface, a part of the flow rate of water can be guided downward from the horizontal direction. Therefore, water can be sprayed immediately near the head member H. Therefore, for example, even if the water is rushed out to sprinkle a wide area,
The sprinkling range can be prevented from becoming donut-shaped. Further, when the opening degree of the diffusion channel B is reduced by adjusting the flow rate adjusting screw 30, water flowing out from the diffusion channel B is
It is guided along the inclined surface 25 a of the recess 25. Most of the water guided along the inclined surface 25a is discharged below the horizontal direction along the upper end surface 25b. Therefore, only in the immediate vicinity of the head member H, mist-like water can be evenly sprayed.

On the other hand, an adjusting piece 33 shown in FIGS. 7 to 9 is attached to the sprinkler of the first embodiment. The adjusting piece 33 adjusts the watering range in the 360-degree direction. As shown in FIG.
a, a concave portion 34 and a knob portion 35 are formed. The radius of the main body 33a is larger than the radius of the head member H. The adjustment piece 33 is made of elastic rubber or the like, and is deformed along the inclined surface 26 of the head member H.

As shown in FIG. 8, the adjusting piece 33 as described above has its concave portion 34 formed with the screw portion 3 of the flow rate adjusting screw 30.
0a. Then, the flow rate adjusting screw 30 is tightened, and the head 31 of the flow rate adjusting screw 30 and the head member H
Between the first and second concave portions 25. The adjustment piece 33 firmly attached to the head member H in this manner is the one shown in FIG.
As shown in (2), since the deformation is performed along the inclined surface 26, the 180-degree range of the diffusion channel B is closed. If the 180-degree range of the diffusion channel B is closed in this way, water is sprayed from the remaining 180-degree range where the adjusting piece 33 is not provided.

If the adjusting piece 33 as described above is attached to the head member H, water can be sprinkled only in a required direction. Moreover, since the adjusting piece 33 is attached to the head member H while being sandwiched between the flow rate adjusting screw 30 and the concave portion 25, the position of the adjusting piece 33 does not shift during the attachment. Therefore, it is not necessary to adjust the position of the sprinkler body a as in the conventional example. Although the watering range is set to 180 degrees in this embodiment, when the angle is changed, an adjusting piece having a shape corresponding to a required angle may be used.

FIG. 10 shows two sprinklers of the first embodiment connected in series. That is, the connection port 2 of the sprinkler body a1 on the left side of the drawing and the connection port 3 of the sprinkler body a2 on the right side of the drawing are connected via the connection hose 36. With this connection,
Water can be sprinkled from both sprinklers simultaneously. Further, even if the pressure acting on the head portions H of the two sprinklers causes a difference due to the pressure loss generated in the connection hose 36 or the like, it is possible to make the pressure equal by adjusting the adjusting member 21. it can. If the pressures acting on the heads H of both sprinklers are the same as described above, even if a plurality of sprinklers are connected in series, the sprinkling range can be made the same.

In the second embodiment shown in FIG. 11, an extension pipe 37 is connected between the outlet 1 of the sprinkler body a and the valve member. This extension pipe 3
Reference numeral 7 is made of an aluminum pipe, a plastic pipe, or the like, and has a strength not to be easily broken. According to the second embodiment, the head member H can be positioned above a tall plant by the extension pipe 37. Therefore, at the time of watering, the watering range is not narrowed by the planting trees or the like. Therefore, it is possible to surely spray water in a desired range.

In the above-described embodiment, the diffusion member of the present invention is constituted by the screw. However, the invention is not limited to the screw, and any shape may be used as long as the member has a tapered surface and a screw portion. In this embodiment, the head member H is attached to the flow control valve V, but the sprinkler body a
The head member H may be directly attached to the outflow port 1.

[0037]

According to the first aspect of the present invention, the opening degree of the diffusion channel can be freely adjusted, so that the sprinkler itself can adjust the sprinkling range and water form. for that reason,
The watering range and water shape can be adjusted without changing the water pressure, and the watering range can be freely adjusted simultaneously with the adjustment of the water shape.

According to the second aspect, since the upper end surface of the concave portion formed in the head member is curved, a part of the flow rate flowing out of the head member can be guided below the horizontal direction. Therefore, water can be sprayed immediately near the head member. According to the third aspect of the present invention, since the adjusting piece that regulates the watering range in the circumferential direction is sandwiched between the diffusion member and the concave portion and attached, the position does not shift when the adjusting piece is attached. Therefore, the watering range of the head member in the circumferential direction can be easily adjusted.

According to the fourth aspect, the water pressure supplied to the head member can be adjusted by adjusting the flow control valve. By adjusting the water pressure supplied to the head member in this manner, the flow rate of the outflowing water can also be adjusted. Therefore, by adjusting the flow rate, the water spray range and the water shape can be adjusted. According to the fifth and sixth aspects, since the extension pipe is connected between the outlet of the sprinkler body and the head member, the head member can be provided at a high position. If the head member is positioned above a tree plant or the like, the watering range is not narrowed by the tree plant or the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a sprinkler according to a first embodiment.

FIG. 2 is an enlarged sectional view of a head member H and a valve member V of the first embodiment.

FIG. 3 is a cross-sectional view showing the sprinkler of the first embodiment showing a state where the adjustment member 21 is rotated by 90 degrees.

FIG. 4 is a perspective view of a head member H with a part cut.

FIG. 5 is a perspective view of a head member H with a part cut.

6 is an enlarged cross-sectional view of the head member H and the valve member V, and is a cross-sectional view showing a state where the flow rate adjusting screw 29 is screwed in from the state shown in FIG.

7 is a plan view of the sprinkler of FIG. 1 as viewed from above, and is a diagram showing a state before an adjusting piece 33 is attached.

FIG. 8 is a partial cross-sectional view of the head member H, showing an adjustment piece 33;
It is a figure which shows the state which attached.

FIG. 9 is a diagram showing a state in which an adjustment piece 33 is attached to a head member H.

FIG. 10 is a diagram showing a state in which two sprinklers are connected in series.

FIG. 11 is a diagram showing a sprinkler according to a second embodiment.

FIG. 12 is a sectional view showing a conventional sprinkler.

FIG. 13 is a plan view of the head member h as viewed from above, showing a state in which a diffusion pin p is removed.

FIG. 14 is a side view of a diffusion pin p.

FIG. 15 is a plan view showing another head member 16;

[Explanation of symbols]

 a Sprinkler body B Diffusion flow path H Head member V Flow control valve 1 Outflow port 25 Concave portion 25a Inclined surface 25b Upper end surface 26a Cylindrical portion 26b constituting holding portion of the present invention 26b Mounting portion constituting holding portion of the present invention 26c This invention Mounting piece 27 that constitutes the holding part of the present invention 27 Outflow hole that constitutes the communication flow path of the present invention 28 Flow path that constitutes the communication flow path of the present invention 29 Screw hole 30 Flow rate adjusting screw 30a corresponding to the diffusion member of the present invention 30a screw part 32 Tapered surface 37 Extension pipe

[Procedure amendment]

[Submission date] September 9, 1999 (September 9, 1999)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

Further, since the upper end surface 25b of the concave portion 25 is a curved surface, a part of the flow rate of water can be guided downward from the horizontal direction. Therefore, water can be sprayed immediately near the head member H. Therefore, for example, even if the water is rushed out to sprinkle a wide area,
The sprinkling range can be prevented from becoming donut-shaped. When the opening degree of the diffusion channel B is widened by adjusting the flow rate adjusting screw 30, water flowing out of the diffusion channel B is
It is guided along the inclined surface 25 a of the recess 25. Most of the water guided along the inclined surface 25a is discharged below the horizontal direction along the upper end surface 25b. Therefore, only near the head member H ,
And mist-like water with a large water droplet diameter can be evenly sprayed. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 14, 1999 (1999.10.
14)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

According to the first embodiment, the flow rate adjusting screw 3
By turning 0, the position of the head 31 can be adjusted in the axial direction. By adjusting the position of the head 31 in the axial direction in this way, the tapered surface 32 formed on the head 31 and the recess 2
6, that is, the degree of opening of the diffusion channel B can be adjusted. For example, as shown in FIG. 6, the diffusion flow path B can be narrowed by screwing in the flow rate adjusting screw 29 and moving the head 31 downward in the drawing. If the diffusion channel B is narrowed in this way, the diameter of the water droplets to be sprayed can be reduced without increasing the water pressure.
In other words, if the opening degree of the diffusion channel B is reduced, the water source
Even if the water pressure is lowered by adjusting the water pressure,
Wear. And, because it lowers the water pressure like this, it flows out
Water momentum weakens. That much, the mist of water in a narrow area
Can be sprinkled.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

Further, since the upper end surface 25b of the concave portion 25 is a curved surface, a part of the flow rate of water can be guided downward from the horizontal direction. Therefore, water can be sprayed immediately near the head member H. Therefore, for example, even if the water is rushed out to sprinkle a wide area,
The sprinkling range can be prevented from becoming donut-shaped. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 15, 2000 (2000.2.1
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

[0017]

SUMMARY OF THE INVENTION The present invention provides a sprinkler body, an outlet formed in the sprinkler body, a head member attached to the outlet, a mortar-shaped recess formed in the head member, and a head. A communication channel formed in the member and communicating the bottom of the recess with the outlet, a diffusion member positioned at the center of the recess and attached to a holding portion formed in the head member, and a diffusion member formed in the diffusion member. A tapered surface substantially parallel to the inclined surface of the concave portion, and a diffusion channel formed by a gap between the tapered surface and the inclined surface. It is assumed that a sprinkler that diffuses water along the tapered surface and the inclined surface when discharging the water guided to the outside from the periphery of the diffusion member to the outside through the diffusion channel.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

The mounting portion 26b to which the flow rate adjusting screw 30 is mounted as described above is provided on the cylindrical portion 26a via a plurality of mounting pieces 26c provided at equal intervals in the circumferential direction. A plurality of flow paths 28 are provided between the mounting pieces 26c.
Are formed, and these flow paths 28 communicate with the outflow holes 27. Therefore, the water supplied from the concave portion 18 side of the flow control valve V is guided from the flow path 28 to the concave portion 25 through the outflow hole 27.

Claims (6)

[Claims] 1. A sprinkler body, an outlet formed in the sprinkler body, a head member attached to the outlet, a mortar-shaped recess formed in the head member, and a recess formed in the head member. A communication flow path that communicates the bottom with the outflow port, a diffusion member that is located at the center of the recess, and is attached to a holding portion formed in the head member; And a diffusion flow path formed by a gap between the tapered surface and the inclined surface, and water guided from the outlet to the communication flow path through the diffusion flow path. A sprinkler for diffusing water along a tapered surface and an inclined surface when discharging to the outside, comprising: a screw portion formed in the diffusion member; and a screw hole formed in the holding portion. A sprinkler, wherein a screw portion of the dispersing member is attached to a screw hole of the holding portion so that the diffusing member can be adjusted in the axial direction. 2. The sprinkler according to claim 1, wherein an upper end surface of the recess is a curved surface. 3. The sprinkler according to claim 1, wherein an adjusting piece is inserted into the diffusion channel, and the adjusting piece is sandwiched and fixed between the diffusing member and the recess. 4. The sprinkler according to claim 1, wherein a flow control valve is connected between the outlet of the sprinkler body and the head member. 5. The sprinkler according to claim 1, wherein an extension pipe is connected between the outlet of the sprinkler body and the head member. 6. The sprinkler according to claim 4, wherein an extension pipe is connected between the outlet of the sprinkler body and the flow control valve.