JP2013094428A - Fluid jetting joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid jetting joint that responds to a request for simultaneously executing fire extinguishing work of mist water discharge and one point water discharge and reduces the possibility that the sensible temperature of a fire extinguishing worker becomes too high or the fire extinguishing worker suffers heat exhaustion during the fire extinguishing work.SOLUTION: The fluid jetting joint includes: a cylindrical joint body; a plurality of nozzle-hole heads arranged in a circumferential direction of the joint body; and a jet adjustment mechanism provided at least at either one of a joint body circumferential part closer to the axial rear than the nozzle-hole heads and a joint body circumferential part on the inner side in the cylinder radial direction than the nozzle-hole heads. The plurality of nozzle-hole heads are respectively inclined and oriented at a predetermined inclination angle with respect to the axial direction and configured to spray fluid with a flow rate adjusted by the jet adjustment mechanism from the plurality of nozzle-hole heads to the oblique side with respect to the axial direction.

Description

  The present invention is a fluid joint used for fire fighting, water sprinkling or chemical spraying, and in particular, ejects fluid from a nozzle head provided separately from the jet toward the axial front side to the side or oblique side. A possible fluid coupling.

  Regarding a water discharge nozzle for fire-fighting that sprays and discharges water, conventionally, by switching the switching valve 7, a direct-injection water stream that has a small expansion angle and can easily reach far away, and a fan-shaped spray water stream that has a large expansion angle in the horizontal direction, Can be switched as needed to discharge water (see Patent Document 1).

  Specifically, this has two water flow paths 8, 9 that can be selectively switched, and a plurality of direct injection nozzle holes 18a are formed at the tip of the first water flow path 8, and each direct injection nozzle hole 18a is formed. Is formed in such a direction that its axial direction expands with a slight angle with respect to the other direct injection nozzle holes 18a, and a plurality of fan-shaped nozzle holes 18b are formed at the tip of the second water flow path 8. The axial direction of the other fan-shaped nozzle holes 18b is formed in a direction extending with an angle in the horizontal direction.

  The above-mentioned fan jet water stream sprays high-pressure water in the form of a mist to discharge water, cools the fire source with the water, covers the fire source with water vapor generated by water evaporation, and shuts off the supply of air. Extinguish fire. Fire extinguishing by spraying water spray is different from the conventional method of extinguishing fire by directly squirting rod-shaped water into the fire, and the amount of water required for extinguishing is small, and the water is released in the form of fine water droplets. Therefore, it is said that there is little impact due to direct discharge of the water discharge flow, and water loss can be greatly reduced.

JP 2001-070468 A

  Here, when using the fire-fighting nozzle, there are cases where simultaneous fire extinguishing by mist water discharge for oil fire and fire extinguishing by concentrated water discharge for normal fire are required. In addition, water discharge work is often performed at high temperatures, and even when wearing fire fighting clothing, the temperature of fire extinguishing workers may increase to nearly 100 degrees depending on the wind direction and the position of the combustibles. . Moreover, when the air respirator is attached in addition to the fire fighting suit for fire fighting, the total weight of the attachment becomes considerable and there is a risk of causing heat stroke during the fire fighting operation.

  However, the above-described conventional fire-fighting nozzle selects and injects a direct-injection water flow and a fan-type water jet by switching the switching valve, and cannot discharge these two types of water at the same time. For this reason, it is impossible to meet the above-mentioned requirement of simultaneous fire extinguishing and concentrated water discharge, and the temperature of the fire extinguisher is too high, or the fire extinguisher becomes heat stroke during the fire extinguishing work. The possibility of doing so could not be suppressed.

  Therefore, the present invention can meet the demand for simultaneous fire extinguishing of foggy water and concentrated water discharge, and the temperature of the fire extinguisher is too high, or the fire extinguisher becomes heat stroke during the fire extinguishing work. It is an object of the present invention to provide a fluid ejection joint capable of suppressing the possibility of occurrence.

  In order to achieve the above object, the present invention takes the following means (1) to (5).

(1) The fluid ejection joint of the present invention is
A tubular joint body that can be interposed in the connecting part of the hose or the fluid nozzle or any one of the above-mentioned front parts;
A plurality of nozzle heads disposed along the circumferential direction of the joint body;
A fluid ejection joint comprising a joint adjustment mechanism provided at least on one of the joint main body circumferential portion closer to the rearward in the axial direction than the nozzle head and the joint main body circumferential portion on the inner side in the cylinder radial direction from the nozzle head. There,
Each of the plurality of nozzle heads is inclined and oriented at a predetermined inclination angle with respect to the axial direction, and the fluid having a flow rate adjusted by the jet adjustment mechanism is laterally inclined with respect to the axial direction from the plurality of nozzle heads. It can be sprayed on

(2) In the fluid ejection joint, the plurality of nozzle heads can spray a fluid having a maximum particle diameter of less than 100 μm in the form of a mist, and vaporize the spray area by spraying the fluid having the minute flow diameter. It is preferable to provide a cooling action.

(3) In the fluid ejection joint according to any one of the above, the joint main body includes a flow restrictor that reduces the cylinder inner diameter of the installation portion over the cylinder inner circumference at a predetermined axial position.
It has a plurality of side holes that open the joints laterally over the cylinder side circumference at a position rearward in the axial direction or in the vicinity of the flow restrictor,
The plurality of side holes communicate with the plurality of nozzle heads through one or a plurality of communication spaces,
It is preferable that the adjustment mechanism is provided on the periphery of the joint body so as to be movable in the axial direction, and can adjust the fluid by closing or widening the communication space by axial movement.

(4) In the fluid ejection joint, each of the plurality of nozzle heads is formed of a small cylindrical body having a nozzle outlet at the tip and having a needle in the center of the inside, and each base portion is in the circumferential direction of the joint main body. It is preferable that it is attached to the inclined side surface of the frame portion that is inclined and extended in a trapezoidal shape along the side.

  According to the above configuration, the joint main body that can be interposed in the hose or the fluid nozzle allows the fluid to be ejected from the hose tip side or the fluid nozzle toward the cylinder axial direction side of the joint, while being diagonally opposite to the axial direction from the nozzle head. The fluid can be ejected laterally. By retrofitting into an existing hose or fluid nozzle, more types of jetting can be performed, and jetting can be performed while adjusting a predetermined amount toward the side of the lick by the jet adjustment mechanism. Moreover, it is possible to spray water only from the nozzle head without sending the fluid to the axial front side by connecting the nozzle which can close the front side of the joint with a plug or can be closed. For example, in horticulture and plant cultivation including lawn maintenance work, the minimum amount of water or chemicals can be sprayed from the nozzle head in the form of a mist.

  Further, by using a nozzle head capable of spraying dry fog (so-called micro mist) having a particle diameter of less than 100 μm in the form of a mist, it can be used as an ejection nozzle for cooling sensation due to heat of vaporization. In particular, it is possible to obtain a smoke-extinguishing effect by causing dry fog to be put out at the time of extinguishing work, thereby smoothly performing fire extinguishing / rescue activities in the event of a fire. In particular, by using dry fog for horticulture, plant cultivation, or livestock raising, it is possible to suppress the influence of excess chemical spillage, or to prevent root rot caused by excessive water supply.

  In addition, by forming a flow restrictor in the joint body and forming a communication path from the stagnation part in the vicinity of the flow restrictor and in the axial rear part to the side of the nozzle head, the fluid flowing in the shaft can be efficiently Can be discharged to the side. Also, by partially reducing the fluid pressure and partially increasing the flow velocity with the fluid restrictor, side injection is performed from the side without significantly affecting the fluid flow rate in the axial direction in the main body of the next hand. be able to. Assuming that each of the ejection heads includes a needle, mist-like watering can be reliably performed in the orientation direction of the needle.

  The fluid ejection joint of the present invention employs the above-described means, and is a joint that can be incorporated into a conventional nozzle structure or hose by interposition, and a plurality of nozzle heads are oriented so that the spray amount can be adjusted to the sides of the joint. As a result, it became possible to meet the demand for simultaneous fire extinguishing of fog water and concentrated water discharge. Further, by sub-spouting the fluid from the nozzle head to the oblique side, it is possible to suppress the possibility that the temperature of the fire extinguisher is too high or the fire extinguisher may become heat stroke during the fire extinguishing work. It became a thing.

FIG. 3 is an axial half sectional explanatory view of a fluid ejection joint (a nozzle head in an open state) according to the first embodiment. FIG. 3 is an axial half cross-sectional explanatory view of a fluid ejection joint (a nozzle head closed state) according to the first embodiment. The front view explanatory drawing of the fluid ejection joint of Example 1. FIG. Side view explanatory drawing of the assembly body of Example 1 which integrated the fluid ejection joint of Example 1 between the pipe rod and the 1st fluid nozzle. The principal part enlarged side view which shows the 1st state (a nozzle head closed state and a nozzle open state) of the assembly body of Example 1 of FIG. The principal part enlarged side view which shows the 2nd state (a nozzle head open state and a nozzle open state) of the assembly body of Example 1 of FIG. The principal part enlarged side view which shows the 3rd state (a nozzle head open state and a nozzle closed state) of the assembly body of Example 1 of FIG. Side view explanatory drawing of the assembly body of Example 2 which incorporated the fluid ejection joint of Example 1 between the pipe rod and the 2nd fluid nozzle.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described below with reference to the drawings shown as examples. FIGS. 1-3 are the fluid ejection joints of Example 1, FIGS. 4-7 are the 1st built-in bodies which incorporated this in the pipe rod and the adjustable fluid nozzle, FIG. 8 is the pipe rod and release. It is the 2nd built-in body built in the type fluid nozzle.

[Fluid ejection joint] The fluid ejection joint of the embodiment is basically
A cylindrical joint body having a first internal space extending in the axial direction, and a second internal space as an in-cylinder space;
A plurality of side holes that are drilled in the cylinder side portion of the joint main body and respectively communicate with the first internal space;
Covering the periphery of the joint body so as to be movable in the axial direction, and covering the side hole by axial movement,
A frame that extends from the cover to the front and extends with a diameter larger than the cylinder diameter;
A support frame fixed to the periphery of the joint body, the frame rear portion always contacting the front inner surface of the frame portion;
And a plurality of nozzle heads each having a nozzle port which is a frame front portion of the support frame and is arranged and supported in the circumferential direction and which is oriented obliquely forward with respect to the axis.

(Ejection head) Each ejection head has a spout at the tip, and is made up of a small tubular body with a needle in the center of the interior, and each base is trapezoidal along the circumferential direction of the joint body It is attached to the inclined side surface of the frame portion that is inclined and overhangs.

  Each of the plurality of nozzle heads is tilted and oriented at a common tilt angle within a range of 20 to 85 degrees in the opposite axis direction, which is a predetermined tilt angle with respect to the axial direction, and the fluid having a flow rate adjusted by the ejection adjusting mechanism. Can be sprayed obliquely to the axial direction from a plurality of nozzle heads. In the embodiment, all six units are arranged at equal intervals in the radial direction in the axial orthogonal section view and obliquely forward in the side view, and the fluid is partially spherical from the recesses 2D of the respective outer outlets. It spreads and spreads out. In addition, all six may be facing diagonally backward, or only a part may be facing diagonally backward. Further, each of the six groups may be inclined at different counter-axis inclination angles.

  The plurality of nozzle heads can spray a fluid having a maximum diameter of less than 100 μm in the form of a mist, and spray the fluid with the minute flow diameter to give a vaporization and cooling action to the spray region. Can do.

(Coupling body) The coupling body has a flow restrictor for reducing the cylinder inner diameter of the installation portion over the inner periphery of the cylinder at a predetermined axial position, and is located at a position rearward in the axial direction or near the flow restrictor. A plurality of side holes for opening the joint sideways are provided over the cylinder side periphery.

  The plurality of side holes communicates with the plurality of nozzle heads via one or a plurality of communication spaces, and the adjustment mechanism is provided on the periphery of the joint body so as to be movable in the axial direction. The fluid can be adjusted by closing or widening the communication space by movement.

  The flow restrictor 13 is an annular projecting body that protrudes from the inner surface of the tube toward the center of the shaft, and the projecting body has a right triangle cross section with the front side of the shaft as an inclined side. The diameter is increased at the inclined side and opened forward with a slightly smaller diameter than the throttle section publication.

The fluid adjustment mechanism includes a rotary handle having a front frame that is screwed to the outer periphery of the joint body, and the front frame that protrudes forward of the rotary handle moves closer to or away from the support base by axial movement accompanying rotation. As a result, the communication space at the rear of the frame surrounded by the front frame is closed or adjusted to expand or contract in the axial direction (FIGS. 1 to 2).
The front frame of the rotating frame seals and covers the periphery of the support base, thereby forming a communication space communicating with the side hole in the frame behind the support base.

(Support) The support that supports the nozzle head has a fluid circulation space inside, and has an inclined side surface that is inclined with respect to the axial direction outside. A plurality of communication holes for communicating the fluid circulation space and the head are provided in the circumferential direction at the nozzle head fixing position on the inclined side surface. Further, a bottom hole communicating with the inside of the support base is provided on the rear surface of the support base.
In the assembled body according to the first embodiment of the present invention, the fluid ejection joint according to the first embodiment is interposed between the tip portion of the pipe rod and the flow rate adjusting fluid nozzle.
In addition, the joint main body can be interposed in the connection portion or any one of the above-described front portions.
A plurality of nozzle heads are arranged along the circumferential direction of the joint body, and fluid can be supplied either from the tip of the flow rate adjusting fluid nozzle (FIG. 6) or selectively (FIGS. 5 and 7). Erupt. In particular, in the simultaneous use (combined use) state of FIG. 6, the fire source can be intensively extinguished while exhibiting the smoke extinguishing effect, so that fire extinguishing activities can be performed smoothly.
An ejection adjustment mechanism is provided on the joint main body peripheral portion closer to the rear side in the axial direction than the nozzle head. By adjusting the torsion of the handle of the ejection adjusting mechanism, it is possible to adjust the presence or absence or the amount of outflow from the nozzle head. The nozzle head has a built-in needle, and the inner hole expands immediately after the diameter reduction through the inner restricting portion 22 and continues to the concave surface of the front surface. It is possible to easily switch between local spraying which is sprayed relatively locally to the region.

  In addition, the present invention is not limited to the above-described embodiments, and various arrangement changes, unitary-separated configuration changes, arrangement of the number of heads and head angles, change in direction, and outlets are possible without departing from the spirit of the present invention. It is possible to change the ejection port of the head and the internal flow structure, the formation direction or number of the fluid flow paths, the arrangement of the blocking plates, the adjustment method, and the like.

DESCRIPTION OF SYMBOLS 1 Joint main body 110 1st internal space 120 2nd internal space 11S Base screw structure 11H Side hole 12P Tip part packing 12S Outer screw structure 12T Outer projecting part 13 Inner restricting part 2 Ejection head 21 Ejection needle 22 Head overhanging piece 2H Ejection 2D hollow end 3 rotating handle 30 adjustment space 31 handle frame portion 3P handle packing 3S handle screw structure 4 head support frame 40H bottom holes 41P, 42P, 43P support frame packing 40 space in frame 5 connecting tube 5P connecting tube packing 50 connecting space 51 Inner thread structure of connecting pipe inner wall 5S

Claims (4)

A tubular joint body that can be interposed in the connecting part of the hose or the fluid nozzle or any one of the above-mentioned front parts;
A plurality of nozzle heads disposed along the circumferential direction of the joint body;
A fluid ejection joint comprising a joint adjustment mechanism provided at least on one of the joint main body circumferential portion closer to the rearward in the axial direction than the nozzle head and the joint main body circumferential portion on the inner side in the cylinder radial direction from the nozzle head. There,
Each of the plurality of nozzle heads is inclined and oriented at a predetermined inclination angle with respect to the axial direction, and the fluid having a flow rate adjusted by the jet adjustment mechanism is laterally inclined with respect to the axial direction from the plurality of nozzle heads. Fluid ejection joint characterized by being able to be sprayed onto   The plurality of jet heads are capable of spraying a fluid having a maximum particle diameter of less than 100 μm in the form of a mist, and spraying the fluid with the minute flow diameter to give a vaporization cooling action to the spray region. Fluid ejection joint as described. The joint body has a flow restrictor for reducing the cylinder inner diameter of the installation portion over the cylinder inner circumference at a predetermined axial position,
It has a plurality of side holes that open the joints laterally over the cylinder side circumference at a position rearward in the axial direction or in the vicinity of the flow restrictor,
The plurality of side holes communicate with the plurality of nozzle heads through one or a plurality of communication spaces,
The fluid ejection joint according to claim 1 or 2, wherein the adjustment mechanism is provided in a peripheral portion of the joint main body so as to be movable in the axial direction, and fluid adjustment can be performed by closing or widening the communication space by axial movement.   Each of the plurality of spout heads is composed of a small cylindrical body having a spout at the tip and having a needle in the center of the inside, and each base portion is inclined in a trapezoidal shape along the circumferential direction of the joint body. The fluid ejection joint according to claim 3, wherein the fluid ejection joint is attached to be spaced apart from the inclined side surface of the frame portion that is attached in a projecting manner.

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