JP2013252215A - Water discharge nozzle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge nozzle which can discharge water at a long distance, causes little discharge reaction, and can discharge water in a very wide range in straight discharging of water.SOLUTION: A water discharge nozzle device comprises an attachment body 2 and water discharge nozzles 3. The attachment body 2 includes: a single large-diameter joint hollow space part 4 on a water supply side; a plurality of small-diameter branch through-holes 5 on a water discharge side while the total water flow passing area of the holes 5 is smaller than a water flow passing area on a water supply hose side; and a storage chamber 6 which has a larger diameter than the joint hollow part and is formed between the branch through-holes and the joint hollow part. The water discharge nozzle 3 include spray nozzles 11 in each of which a water discharge port of a diameter nearly equal to or smaller than the branch through-hole is formed, the spray nozzles 11 being connected to distal ends of branching pipes in which a plurality of flow straightening pipes are assembled. The plurality of corresponding water discharge nozzles are joined to water discharge sides of the plurality of branch through-holes.

Description

  The present invention relates to an improvement of a water discharge nozzle device, and more specifically, in a water discharge nozzle device using a plurality of water discharge nozzles, even when straight water discharge is performed, water can be discharged to a greater distance and a wide range of water can be discharged. The present invention relates to a water discharge nozzle device capable of water discharge to an area.

  As a conventional nozzle device for water discharge, a water discharge nozzle as a fire fighting device is known. This water discharge nozzle was able to perform straight water discharge (bar-shaped water discharge) and spray water discharge. Straight water discharge is suitable for long-distance water discharge, but has a small water discharge area. On the other hand, spray water discharge has a wide water discharge area, but can only discharge water at a short distance, and cannot discharge water amount suitable for fire extinguishing.

  Furthermore, even if you want to perform spray water discharge with a wide fire extinguishing area at a short distance, approaching the fire surface at the fire site is a dangerous act for fire fighters and safety is given priority. The current situation is to rely on straight water discharge with a small fire extinguishing area from a long distance.

  Therefore, a water discharge nozzle device capable of ensuring a water discharge distance equivalent to straight water discharge and at the same time ensuring a wide fire extinguishing area is desired, and a fire extinguishing nozzle device having a plurality of nozzle cylinders as shown in Patent Document 1 has been provided. . The fire-extinguishing nozzle device disclosed in Patent Document 1 has a central nozzle cylinder and a plurality of peripheral nozzle cylinders protruding around the central nozzle cylinder.

  This fire extinguishing nozzle device is characterized in that an air suction hole for sucking outside air into the side surface of the nozzle cylinder is formed. This makes it possible to increase the hydrophilicity including a large amount of bubbles ejected from a plurality of peripheral nozzle cylinders around the central gas-liquid mixed water stream including a large amount of bubbles ejected from the central nozzle cylinder and having increased hydrophilicity. The combined water flow combined with a plurality of gas-liquid mixed water flow was able to secure the necessary increase in fire extinguishing, and to obtain effective fire fighting activities.

  However, there are a plurality of nozzle cylinders (in the embodiment, the central nozzle cylinder and four surrounding nozzle cylinders) in the fire-extinguishing nozzle device disclosed in Patent Document 1, but since it is a gas-liquid mixed water flow, it can be used for fire extinguishing. The necessary amount of water could not be secured, and further, when the amount of water was increased, the recoil of the water discharge increased, resulting in inconvenience in fire fighting activities.

Japanese Patent Application Laid-Open No. 2009-291699

Therefore, in order to solve the above problems, the present invention attempts to solve the following problems.
The first problem is to make it possible to increase the power of the water discharge pressure and to discharge water over a long distance even in a system in which water is discharged from a plurality of water discharge nozzles in order to widen the fire extinguishing range.
A second problem is to provide a water discharge nozzle device that can ensure a water flow that is originally rotated straight, has a low water discharge reaction, and can fly away.
The third problem is that straight water discharged from individual water discharge nozzles flies straight while rotating in a bundle, and is diffused by rotation at the water discharge tip, so that water can be discharged over a wide range even in straight water discharge. It is to make a nozzle device for water discharge.

In order to solve the above-mentioned problems, the first invention employs the following means in the nozzle device for water discharge.
First, a single large-diameter connecting hollow portion connected to a water supply hose connector is provided on the water supply side.
Secondly, a plurality of small-diameter branch through holes are provided on the water discharge side so that the total water flow passage area of the plurality of branch through holes is smaller than the water flow passage area on the water supply hose side.
Third, an attachment body in which a reservoir chamber having a larger diameter than the connection hollow portion is formed between the branch through hole and the connection hollow portion, and a branch pipe incorporating a rectifier including a plurality of rectification pipes. It is composed of a water discharge nozzle connected to a spray nozzle in which a water discharge port having a diameter substantially equal to or smaller than the diameter of the branch through hole is formed.
4thly, the corresponding some water discharge nozzle was connected with the water discharge side of the some branch through-hole in the said attachment body.

The second invention is a nozzle device for water discharge in which the following means are added to the first invention.
First, the plurality of water discharge nozzles are provided with five water discharge nozzles arranged evenly around the water discharge nozzle at the center.
Secondly, the five water discharge nozzles around the center are arranged at an angle that opens toward the water discharge side with the central water discharge nozzle as the center.

The third invention is a nozzle device for water discharge in which the following means are added to the first invention.
First, the plurality of water discharge nozzles are provided with eight water discharge nozzles arranged uniformly around the center of the single water discharge nozzle.
Second, the eight water discharge nozzles around the center are arranged at an angle that opens toward the water discharge side with the central water discharge nozzle as the center.

A fourth aspect of the invention is a water discharge nozzle device in which the following means are added to any of the first to third aspects of the invention.
1stly, between the coupling tool of the said water supply hose, and the connection empty part of the said attachment body, a rotating body which has a rotary blade rotated on the water discharge direction by the water pressure of a supply water flow, and rotational force is provided to this rotary blade An automatic rotation mechanism having a guide member for generating a water flow is provided.
Secondly, a connecting hollow portion of the attachment body is connected to the automatic rotation mechanism.

  The first aspect of the present invention is a reservoir chamber having a diameter larger than that of the connection empty space between a plurality of branch through holes provided so that the total water flow passage area is smaller than the water flow passage area on the water supply hose side and the connection empty space. By having the attachment body formed with the water discharge nozzle device, the water pressure and power can be increased.

  Secondly, by constituting a water discharge nozzle with a spray nozzle connected to the tip of a branch pipe incorporating a rectifier composed of a plurality of flow straightening pipes, the water flow that originally rotates is straightened to reduce the water discharge reaction at the same time. It became a nozzle device for water discharge that can fly away.

  Although it is an effect of 4th invention, it rotates to a rotary body which has a rotary blade which rotates on the axis of a water discharge direction with the water pressure of a supply water stream, and a rotary blade between the connecting hose of a water supply hose and an attachment body Since an automatic rotation mechanism having a guide member for generating a water flow for applying a force is provided, and the connection hollow portion of the mounting body is connected to the automatic rotation mechanism, the water discharge jumps straight while rotating, and is rotated at the water discharge tip. It became a nozzle device for water discharge that is diffused and can discharge water over a wide range even in straight water discharge.

  Furthermore, the rotation can be used not only for water discharge for fire extinguishing but also for cleaning by water pressure, decontamination work for the ground, and the like.

Side surface explanatory drawing which shows 1st Example of the nozzle device for water discharge Sectional explanatory drawing of the attachment body in the state which connected the water discharge nozzle in 1st Example. Front explanatory drawing of the same state Rear view of the mounting body in the first embodiment Side view of water discharge nozzle Rear view of water discharge nozzle Cross-sectional illustration of water discharge nozzle Disassembled perspective view of water discharge nozzle The perspective view which shows the attachment state of the water discharge nozzle in 1st Example. Side explanatory drawing of 2nd Example of a water discharge nozzle apparatus Side explanatory view showing components of automatic rotation mechanism Cross-sectional explanatory drawing showing the mounting state of the automatic rotation mechanism Rear view of guide member Center longitudinal section of guide member

  Hereinafter, embodiments of the present invention will be described together with examples according to the drawings. FIG. 1 is an explanatory side view showing a first embodiment of a nozzle device for water discharge. As shown in the figure, the nozzle device 1 for water discharge according to the first embodiment includes an attachment body 2, a plurality of water discharge nozzles 3, and a handle 7 attached to the attachment body 2 at an angle of about 45 degrees. .

  As shown in FIG. 1 and FIG. 2, the attachment body 2 is one in which a connecting hollow portion 4, a branch through hole 5, and a reservoir chamber 6 are integrally formed. The connection hollow portion 4 formed inside the attachment body 2 is a single large-diameter hollow portion connected to a water supply hose connector (not shown) existing on the water supply side. In addition, the code | symbol 14 in FIG.1 and FIG.2 is a connection part.

  A plurality (6 in the embodiment as shown in FIG. 4) of branch through-holes 5 formed in the mounting body 2 in the opposite direction to the connecting hollow portion 4 are provided on the water discharge side on the left side in FIG. It is a small-diameter through hole. The sum of the water flow passage areas of the six branch through holes 5 is formed to be smaller than the water flow passage area of the water supply hose side and the connecting hollow portion 4. One branch through-hole 5 is provided at the center of the end surface of the attachment body 2 on the water discharge side, and five branch through-holes 5 are evenly provided around the center one branch through-hole 5.

  Although there are six branch through-holes 5 of the attachment body 2 in the first embodiment, there is also an attachment body 2 with nine branch through-holes 5 as another embodiment. In that case, one is provided in the center and eight are provided uniformly around the periphery. Of course, the number of the branch through holes 5 may be plural, and is not limited to this.

  As shown in FIG. 2, a reservoir chamber 6 having an inner diameter larger than that of the connection hollow portion 4 is formed between the connection hollow portion 4 and the branch through hole 5 of the attachment body 2. The reservoir chamber 6 is a space for temporarily storing the water supplied from the water supply hose through the connection hollow portion 4 inside the connection portion 14 and stably supplying water to the branch through hole 5 at a high pressure.

  As shown in FIG. 9, a plurality of (six in the first embodiment) water discharge nozzles 3 are connected to the water discharge side of the branch through hole 5. In another embodiment not shown in the drawings, nine water discharge nozzles 3 are connected to correspond to the nine branch through holes 5.

  As shown in FIG. 7, the water discharge nozzle 3 is formed with a water discharge port 10 having a diameter that is substantially the same as or smaller than the diameter of the branch pipe 9 and the branch through hole 5 incorporating a rectifier composed of a plurality of rectification pipes 8. The injection nozzle 11 thus formed is connected using a connector 12. The rectifying pipe 8 in the embodiment is a pipe having an outer diameter of 3 mm, an inner diameter of 2 mm, and a length of 30 mm. Seven of the rectifying pipes 8 are inserted and fixed inside the branch pipe 9 having an inner diameter of 9 mm. is there.

  The water discharge nozzle 3 is attached to a branch through-hole 5 formed in advance so that five water discharge nozzles 3 are evenly arranged around the center of the water discharge nozzle 3 in the center. At that time, the surrounding five water discharge nozzles 3 are opened to the water discharge side around the center water discharge nozzle 3, that is, inclined to the water discharge side, that is, the angle is inclined by 4.2 degrees to the branch through hole 5. ing.

  Hereinafter, the operation of the water discharge nozzle device 1 according to the first embodiment will be described. A water flow for water discharge is sent from a water supply hose (not shown). The water flow enters the inside of the mounting body 2 from the connecting hollow portion 4 of the mounting body 2 and passes through the reservoir chamber 6 of the mounting body 2. Since the reservoir room 6 is a room having a diameter larger than that of the connecting empty part 4, the water flow that has passed through each can stably send a high water pressure to the water discharge side.

  A plurality of water streams that have passed through the reservoir chamber 6 pass through the six branch through-holes 5 in the first embodiment and head toward the water discharge nozzle 3. At this time, the total water flow passage area of the branch through-holes 5 is smaller than the water flow passage area on the water supply hose side and the water flow passage area of the connecting empty portion 4 and the reservoir chamber 6, so that the pressure of the water flow is increased. Further, the water flow containing the water discharge nozzle 3 is rectified by the rectifying pipe 8 built in the branch pipe 9, thereby eliminating the rotation of the water flow, that is, the effect of extending the water discharge distance and reducing the water discharge reaction in order to improve straightness. Demonstrate.

  Further, since the water flow passage area of the tip of the water discharge nozzle 3, that is, the water discharge port 10 of the injection nozzle is formed to be approximately equal to or smaller than the diameter of the branch through hole 5, the water discharge over a long distance without lowering the water discharge pressure. Is possible.

  Then, the nozzle device 21 for water discharge which concerns on 2nd Example is demonstrated. The water discharge nozzle device 21 according to the second embodiment includes a water supply hose connector (not shown) and a connection portion 27 of the attachment body 22, that is, an automatic connection shown in FIGS. A rotation mechanism 30 is provided.

  The mounting body 22 has the same configuration as that of the mounting body 22 in the first embodiment in that a connecting hollow portion 24, a branch through hole (not shown), and a reservoir chamber 26 are integrally formed therein. However, the branch through hole is formed in the connecting pipe 25 which is formed to protrude from the reservoir chamber 26 of the attachment body 22 in the water discharge direction. That is, the hollow portion of the connecting pipe 25 becomes a branch through hole.

  As shown in FIG. 10, a water discharge nozzle 23 is attached to the connection pipe 25 having a branch through hole. The water discharge nozzle 23 here is the same as the water discharge nozzle 3 in the first embodiment both in its configuration and mounting state.

  As shown in FIG. 11, the automatic rotation mechanism 30 connected to the attachment body 22 rotates between the housing case 31 and the cap 32 via a bearing 33 and a washer 34 and rotates around the water discharge direction as an axis. A rotating member 37 formed with a rotating blade 36 that receives the water pressure of the supply water flow for rotation is mounted on the water supply side of the shaft 35, and a guide member 38 for generating a water flow that applies a rotational force to the rotating blade 36 is provided. It is built-in.

  As shown in FIG. 12, a water channel 45 for sending a water flow to the mounting body 22 is formed inside the rotating body 37. Furthermore, a water introduction port 43 is provided on the side surface of the rotating body 37 on the mounting body 22 side to guide the water flow in contact with the rotating blades 36 to the water channel 45. A direct passage hole 44 toward the water channel 45 is provided.

  The attachment body 22 and the automatic rotation mechanism 30 are connected by inserting the rotation shaft 35 of the rotation body 37 in the automatic rotation mechanism 30 into the connection hollow portion 24 of the connection portion 27, and fixing holes provided on the outer periphery of the connection portion 27. 41 and the fixing hole 41 provided in the rotating shaft 35 are made to coincide with each other, and the snap pin 42 is inserted into both the fixing holes 41. As a result, the mounting body 22 and the rotating shaft 35 of the automatic rotating mechanism 30 are fixed and rotate in cooperation, and the water channel 45 of the rotating body 37 and the connecting hollow portion 24 of the mounting body 22 are connected so that the feed water flow passes. Will be.

  As shown in FIGS. 13 and 14, the guide member 38 is a circular member that matches the inner diameter of the housing case 31, and the water supply side portion of the rotating body 37 in which a direct passage hole 44 is formed at the center is inserted. A guide hole 40 for supplying a water flow at an angle of 45 degrees toward the rotary blade 36 is formed in the insertion hole 39 and the three locations outside the insertion hole 39.

  The three guide holes 40 are formed at positions 120 degrees apart from each other around the direct through hole 44 so that the respective positions are equal. That is, the guide member 38 performs the same action as the guide vane using the guide hole 40, and gives the water flow toward the rotary blade 36 an appropriate direction and speed for rotation.

  Hereinafter, the operation of the water discharge nozzle device 21 according to the second embodiment will be described. A water discharge water stream is sent from a water supply hose (not shown). Since the water supply hose is connected to the cap 32 of the automatic rotation mechanism 30, the water flow enters the housing case 31 and abuts against the guide member 38.

  At that time, since the guide hole 40 is opened on the surface of the guide member 38, the water flow that has passed through the guide hole 40 can change the flow direction and speed, hit the rotary blade 36 of the rotary body 37, and rotate the rotary body 37. Rotate. When a rotation faster than the rotation by the automatic rotation mechanism 30 is desired, rotation in the same rotation direction can be added manually. The water flow used for the rotation flows in the housing case 31, flows into the water channel 45 from the water inlet 43, and is then sent to the connection empty portion 4 of the attachment body 22.

  The flow of the water flow thereafter and the operation of this apparatus are the same as in the first embodiment.

DESCRIPTION OF SYMBOLS 1 ...... Nozzle device for water discharge 2 ...... Attachment body 3 ... Water discharge nozzle 4 ...... Connection empty part 5 .... ············································ 6 ············································································· Branch pipe 10 ··························································································································· Nozzle device for waterproofing 22 ........ Mounting body 23... Water discharge nozzle 24... ... Reservoir room 27 ... Connection part 30 ... Automatic rotation mechanism 31 ... Housing case 32 ... Cap 33 ... ... Bearings 3 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3 ·········································································································································・ ・ ・ ・ ・ ・ ・ Direct passage hole 45 ・ ・ ・ ・ ・ ・ ・ Water channel

Claims (4)

On the water supply side, a single large-diameter connecting hollow connected to a water hose connector is provided,
A plurality of small-diameter branch through holes are provided on the water discharge side, and the total of the water flow passage areas of the plurality of branch through holes is formed smaller than the water flow passage area on the water supply hose side,
An attachment body in which a reservoir chamber having a diameter larger than that of the connection void is formed between the branch through hole and the connection void;
It is composed of a water discharge nozzle in which a spray nozzle in which a water discharge port having a diameter substantially equal to or smaller than the diameter of the branch through hole is connected to the tip of a branch pipe incorporating a rectifier composed of a plurality of rectifying pipes,
A water discharge nozzle device, wherein a plurality of corresponding water discharge nozzles are connected to a water discharge side of the plurality of branch through holes in the attachment body.   The plurality of water discharge nozzles are provided with five water discharge nozzles arranged evenly around the center one water discharge nozzle, and the five water discharge nozzles around the center water discharge nozzle. The water discharge nozzle device according to claim 1, wherein the water discharge nozzle is disposed at an angle that opens toward the water discharge side.   The plurality of water discharge nozzles are provided with eight water discharge nozzles arranged evenly around the center one water discharge nozzle, and the eight water discharge nozzles around the center water discharge nozzle. The water discharge nozzle device according to claim 1, wherein the water discharge nozzle is disposed at an angle that opens toward the water discharge side.   A rotating body having a rotating blade that rotates around the water discharge direction by the water pressure of the supply water flow and a water flow that imparts a rotational force to the rotating blade are generated between the connecting member of the water supply hose and the connecting hollow portion of the mounting body. The water discharge nozzle device according to any one of claims 1 to 3, wherein an automatic rotation mechanism having a guide member is provided, and a connection hollow portion of the attachment body is connected to the automatic rotation mechanism.

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