JPH0972109A - Method and equipment for sprinkling water for crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the generation of dust, and to lay dust generated in a crushing process effectively by forming a central through-hole and a plurality of inclined paths to a nozzle ejecting high-pressure water. SOLUTION: High-pressure water is forwarded to a nozzle 1, introduced to the front end of the nozzle a through a central through-hole 3 and a plurality of inclined paths 4 in the periphery of the through-hole 3, and ejected as jets from each opening 5. The jet from the central through-hole 3 is injected in a rectilinear propagation manner towards a front and the jets from a plurality of the inclined paths 4 are deflected and infected mutually in the oblique forward directions near to a center at that time. Consequently, each jet mutually collides in the vicinity of the front of the nozzle 1, and the water molecules of each jet are disturbed and pulverized by a high-speed rectilinear propagation motion and repulsion with the collisions. Water is diffused within a wide range towards the front from the crushing arms of a crusher, an article to be crushed is moistened equally and the generation of dust is inhibited, and dust generated in a crushing process is laid by sticking of water droplets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkling method and apparatus for calming dust caused by demolition work of a building or crushing concrete lumps and preventing the generation of dust.

[0002]

2. Description of the Related Art In order to prevent the generation of dust associated with the work of dismantling a building or the work of crushing concrete lumps, a water sprinkler disclosed in, for example, Japanese Patent Application Laid-Open No. 4-179773 is known. This sprinkler is equipped with a plurality of sprinkling nozzles on the front and back sides of the frame, but since the water sprayed from ordinary nozzles cannot sufficiently diffuse, the sprinkling area is generally narrow, and effective dust calming is achieved. Requires a large number of nozzles to be attached to the work machine.

Further, an example of a sprinkler installed in a commercially available crusher is shown in FIG. 5, and the sprinkler will be described. This sprinkler has a nozzle 61 attached to its tip, and further has a pipe 60 and a hose fitting 6 of an appropriate length.
7. Although not shown, the pipe 60 is fixedly supported on the main frame or the crushing arm of the crusher by a plurality of support fittings, and the nozzle 61 is positioned so as to face the tip of the crushing arm of the crusher.

In the nozzle 61, a tapered male screw portion 64 is formed in the rear portion thereof, and a bottomed hole 63 is provided inside the nozzle from the rear end side toward the front in the axial direction, and the tip of the bottomed hole is formed. A small diameter hole 62 is formed at the center. Nozzle 6
1 has a structure in which the taper threaded portion 65 formed on the inner circumference of the front end of the pipe 60 is screwed, and the taper threaded portion 66 formed on the inner circumference of the rear end of the pipe is screwed into the taper threaded end of the hose connection fitting 67. Has become.

A high-pressure water supply hose (not shown) is connected to the rear screw portion 68 of the hose connection fitting 67 along the boom of the backhoe equipped with this crusher and the boom,
High-pressure water is supplied to the nozzle 61 by a pump via the hose. The high-pressure water guided to the nozzle 61 diffuses in the form of water droplets due to the complicated motion of water molecules in the process of being emitted from the tip of the small diameter hole 62, and sprays onto the object to be crushed.

[0006]

In this sprinkler, since the jet outlet has a single hole, the jet water cannot be sufficiently diffused even if the diameter of the nozzle hole 62 is increased to increase the amount of radiated water. The dust calming effect is insufficient compared to the amount of water sprayed. On the other hand, when the nozzle hole 62 is made small, the turbulence of the jet flow becomes large and the water diffuses in a wide range, but since the water discharge amount itself is small, there is a defect that a sufficient dust prevention effect cannot be obtained for the crushed object. is there.

In the dismantling and crushing work, the crusher is often thrust deeply into the crushing target object to bite it, or the target object is often rolled and held again, at which time the building to be crushed. The floors and walls of the building collapse and crushed pieces fall, and these crushed materials and concrete debris collide not only with the tip of the crushing arm of the crusher but also with the body frame and other parts. Since the sprinkler is exposed / projected to the outside of the crusher, even if the tip end is protected by the nozzle cover, the crushing target directly collides with it, clogging of the nozzle hole 62 and damage / wear of the nozzle cover and the like. Is likely to occur, and a defect such as deformation of the pipe 60 accompanies frequent repairs.

Therefore, an object of the present invention is to provide a sprinkling method for effectively generating atomized diffusion jets having a high sprinkling effect when mounted on a crusher for dismantling and crushing mounted on a work trolley such as a backhoe. Is. Another object of the present invention is a structure of a sprinkling nozzle capable of sprinkling water over a wide area in a sprinkler installed in a crusher for dismantling and crushing mounted on a work trolley. The aim is to provide a sprinkler system that is protected, has few failures and is highly reliable.

[0009]

In order to solve this problem, the sprinkler of the present invention is attached to a crusher 80 for dismantling and crushing work, as shown in FIG. 4, and the crusher is attached to a backhoe 93 or the like. Attach to the arm tip of the work trolley. In the present invention, the crusher for dismantling and crushing means, for example, a crushing machine for large cracks, a crusher for small cracks, a gripping machine for dismantling, a crusher for reinforced steel frame cutting, and any machine used for any dismantling crushing work. Intended. The tip nozzle part, which is the main part of this sprinkler, is shown in each of FIGS. 1 to 3, and is installed directly on the frame member of the crusher or the constituent members of the crushing arm base or on the auxiliary member 17 attached thereto. That is, the through hole 18 into which the nozzle 1 is to be inserted may be formed in the frame 84 of the crusher 80 (FIG. 4) or a part of the bases of the crushing arms 81 and 82, or in the auxiliary member 17 attached thereto. You may.

In FIG. 4, a rectangular auxiliary member 17 is fixed to the front side of the frame 84 of the crusher 80. One pair of auxiliary members 17 may be arranged on both sides of the frame, or the auxiliary members 17 may be configured to be rotatable so that the direction of water injection can be changed. As shown in FIG. 1, the auxiliary member 17 is provided with a through hole 18 facing the front part of the crushing arm 82, and the nozzle 1 is fitted into the through hole and made stationary. The tapered plug-shaped nozzle 1 needs to be embedded so that its front end face is located deeper than the surface of the auxiliary member 17 and does not project from the surface of the equipment. On the other hand, a means for connecting the water supply hose 89 is provided at the rear portion of the through hole 18, and this means is, for example, the hose connecting fitting 16 screwed into the rear end of the through hole 18, but the fitting is integrated with the auxiliary member 17. It may have a structure like that.

A small-diameter central through hole 3 is formed in the nozzle 1, and the through hole communicates the nozzle front end face and the rear end face 9 and extends obliquely forward from the nozzle rear end face 9 toward the nozzle center. A plurality of inclined passages 4 are formed. Generally, a bottomed recess 2 is provided in the front end surface of the nozzle, the central through hole 3 extends from the rear end surface 9 to the bottom surface of the recess 2, and the opening 5 of each inclined passage 4 is formed in the inner peripheral surface of the recess 2. I understand. High pressure water nozzle 1
When it is injected into the nozzle, the straight-ahead jets ejected from the central through hole 3 and the oblique jets ejected from the respective inclined passages collide with each other near the front of the nozzle.

Regarding the mounting of the nozzle 1, instead of providing the female screw portion 7 having a bottom in front of the through hole 18 as shown in FIG.
As shown in FIG. 2, the inner peripheral surface of the through hole and the outer peripheral surface of the nozzle may be formed in a cylindrical shape, and the small diameter portion 36 may be formed in front of the through hole 37. The inner diameter of the small diameter portion 36 is smaller than the outer diameter of the nozzle 21, and instead of the small diameter portion, a protrusion protruding inside the hole or a stopper fixed to the front surface of the auxiliary member 39 may be used. In FIG. 2, the nozzle 21 inserted from the rear of the through hole 37
Is fixed at the small diameter portion 36, the connection fitting 33 is screwed and fixed, and the space between the through hole 37 and the nozzle 21 may be set to be watertight.

In FIG. 3, the inner surface of the through hole of the auxiliary member 55 includes a female screw portion 47 and a smooth cylindrical portion 51. On the other hand, the nozzle 41 has a smooth cylindrical portion 49 corresponding to the female screw portion 47 and the cylindrical portion 51 of the through hole and a male screw portion 46, and the nozzle and the through hole are set to be watertight. The front end surface of the nozzle 41 may be embedded so as not to project from the surface of the auxiliary member 55.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In a crusher 80 (FIG. 4) for disintegrating and crushing having a sprinkler of the present invention, an on-off valve 90 installed in a cab is opened to perform water injection. by this,
High-pressure water is sent to the nozzle 1 through the hose 89, the high-pressure water is guided to the nozzle tip from the central through hole 3 provided in the nozzle and the inclined passage 4 around the center through-hole 3, and the high-pressure water is opened at the tip opening 5 of each passage.
It becomes a jet from and jets.

At this time, the jet flow from the central through hole 3 is radiated straight ahead, and the jet flows from the plurality of inclined passages 4 around the jet flow are deflected obliquely forward toward the center and emitted. In the vicinity of the front of the nozzle 1, the jet streams collide with each other. As a result, the water molecules of each jet flow are disturbed by the high-speed rectilinear motion and the repulsion caused by the collision to be atomized, and diffused in a wide range from the crushing arms 81 and 82 of the crusher 80 toward the front. Due to the diffusion and radiating action of the high-pressure water, the object to be crushed is evenly wetted to suppress the generation of dust, and the dust generated in the crushing process is calmed by the adhesion of water droplets.

The on-off valve 90 in the operator's cab can be operated at any time at any time, and the backhoe 93 is operated before the crushing work to move the crusher 80 downward and to the front, back, left, and right while moving above the crushed object. It can be sprinkled with water to pre-moisten it, or it can be sprinkled on the work site in parallel with the crushing work. The nozzle 1 of this sprinkler is embedded in the crusher itself or in the auxiliary member 17, the tip of the nozzle is located deeper than the through hole 18, that is, the front surface of the auxiliary member 17, and the jet outlet is Since the structure is located inside the recess of the nozzle, the crushed material and its fragments rarely directly collide with each other, and the structure is protected so that breakage, wear and clogging hardly occur.

[0017]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 each show a tip nozzle portion which is a main part of the water sprinkler of the present invention, and exemplify a crusher 80 equipped with the water sprinkler of the present invention in FIG. In the embodiment shown in FIG. 1, the auxiliary member 17 having a square shape is used as the crusher 8
0 (FIG. 4) is fixed to the front side of the main body frame 84, and the auxiliary member 17 is provided with a through hole 18 that faces substantially the tip of the crushing arms 81 and 82. On the front and rear end faces of the through hole 18,
Tapered female screw portions 7 and 11 each having a diameter larger than that of the through hole and spreading outward are formed.

A nozzle 1 having a tapered male screw portion 6 formed on the outer peripheral surface thereof is screwed into the front female screw portion 7 of the through hole 18, and the nozzle is positioned deeper than the surface of the auxiliary member 17. The nozzle 1 has a bottomed recess 2 on its front end surface, and a small-diameter central through hole 3 connects the nozzle rear end surface 9 and the recess 2. For example, if the shape of the recess 2 is a hexagonal prism, a well-known hexagon wrench can be fitted into the recess 2 to easily screw the nozzle 1 into the screw. The outer peripheral threaded portion 6 of the nozzle 1 is provided with a plurality of notch grooves 8 at substantially equal intervals in the circumferential direction, and each notch groove 8 is set from the rear end face 9 toward the front to almost the middle of the nozzle. In each notch groove 8, a slanted passage 4 of a pore extending obliquely forward toward the center of the nozzle is formed, and each slanted passage 4 penetrates to the inner peripheral surface of the recess 2.

In the plurality of inclined passages 4, when the oblique jets from the passages and the straight jets from the central through hole 3 collide at one point, the deflection components of the respective oblique jets cancel each other and the diffusion directions after the collisions. It is arranged in a well-balanced manner so that there is no deviation. At the screwed position of the nozzle 1 shown in FIG. 1, a gap is formed between the bottom surface 10 of the female screw portion 7 of the auxiliary member 17 and the rear end surface 9 of the nozzle 1. With this gap, an appropriate water chamber is formed.

On the other hand, the front tapered threaded portion 12 of the hose connecting fitting 16 is screwed into the rear female threaded portion 11 of the through hole 18, and a wrench (not shown) is provided in the intermediate hexagonal flat surface portion 13.
And tighten the connection fitting 16 securely,
The water supply hose 89 (FIG. 4) is connected to the rear threaded portion 14 of 6. When high-pressure water is passed through the hose 89, the high-pressure water passes through the hollow hole 15 of the connection fitting 16 and the auxiliary member 17
Is led to the water chamber behind the nozzle via the through hole 18 and is ejected from the central through hole 3 of the nozzle 1 and a plurality of passages 4 located around it.

FIG. 4 shows a crusher 8 equipped with the nozzle 1.
0 is illustrated. The crusher 80 has the arm 86 of the backhoe 93 and the tip pin holes of the bucket link 87,
The brackets 83 are connected by pins 85 and 85.
The crusher 80 can freely control the position and angle by operating the bucket link cylinder 88, the arm 86, the boom, and the like, and by opening and closing the crushing arms 81 and 82 at the tips, the building is dismantled or the concrete block is crushed. The work of crushing can be done.

The tip nozzle portion of the sprinkler shown in FIG. 1 is mounted inside the auxiliary member 17 attached to the side of the main body frame 84 of the shredder 80, and the water supply hose 89 from the connection fitting 16 is inside the frame of the shredder 80. Pass through. The water supply hose 89 relays an opening / closing valve 90 installed in the operator's cab along the arm 86 of the backhoe 93 and the boom, and is further connected to an external pump 92 via a hose 91.

The high-pressure water sent from the pump 92 is supplied to the nozzle 1 arranged beside the frame 84 of the crusher 80 by operating the opening / closing valve 90. In the nozzle 1, a water jet is emitted straight from the center through hole 3 forward, and a water jet is emitted obliquely from a passage 4 of a pore extending obliquely forward toward the center of the nozzle. As a result,
A straight jet from the central through hole 3 and a plurality of deflected jets collide with each other at one point in the vicinity of the front of the nozzle 1, and the deflected components of the oblique jets cancel each other out so that there is no deviation in the diffusion direction after the collision. As a result, the jets interact with each other in a complicated manner, the movement directions of water molecules are disturbed, and the water droplets are atomized and descend while spreading widely throughout the whole.

By radiating high-pressure water widely from the nozzle 1 in the form of mist, dust near the tip of the crushing arms 81, 82 of the crusher 80 is prevented from being generated from the crushing target, and the scattered dust is generated. Can be calmed down. The nozzle 1 can spray water over a large area effectively compared to a conventional nozzle. In the nozzle 1, if the diameters of the small diameter holes 3 and 4 are appropriately increased to increase the supply water pressure, a larger amount of water can be sprinkled by one nozzle to diffuse / spray over a wider area.

In this sprinkler device, the nozzle 1 is buried inside the auxiliary member 17, and the water supply hose 89 passes inside the frame of the crusher 80. Therefore, the object to be crushed does not directly collide with the nozzle 1 or the hose 89, and the structure is less likely to cause damage or wear of these, or clogging of the nozzle 1.

Next, another embodiment of the present invention will be described with reference to FIG. Similar to the above-described embodiment, a through hole 37 is formed in any auxiliary member 39, and the through hole has a small diameter portion 36 in the front thereof toward the tip of the crushing arm and a tapered female screw in the rear. The part 38 is formed. The nozzle 21 is inserted from the rear of the through hole 37, and is made stationary at the small diameter portion 36 in front of the hole, and the small diameter portion 36 is formed to make the nozzle 21 stationary. An annular groove is formed on the outer peripheral surface of the nozzle 21, and an O-ring 27 is fitted into the annular groove to seal the gap between the nozzle 21 and the through hole 37. An annular elastic body 30 such as rubber and a washer 31 are interposed on the rear end surface 29 of the nozzle 21 as shown in the drawing, and the tapered male screw portion 34 of the hose connecting fitting 33 is screwed into the rear female screw portion 38. The nozzle 21 is fixed via the washer 31 and the annular elastic body 30.

The nozzle 21 has a structure substantially similar to that of the first embodiment except for the appearance. A small-diameter central through hole 23 is formed in the nozzle 21, a bottomed recess 22 is formed in the front end face of the nozzle, and a cylindrical recess 28 is formed in the rear end face of the nozzle 21. The recess 21 extends obliquely forward toward the center of the nozzle. A plurality of passages 24 of pores are formed, and each inclined passage extends from the recess 28 to the side surface of the recess 22. Opening 2 of each inclined passage 24
5 are arranged at equal intervals along the circumferential direction on the inner peripheral surface of the recess 22.

A third embodiment will be described with reference to FIG. The through hole formed in the auxiliary member 55 has a parallel female screw portion 47 in the front portion, a smooth cylindrical portion 51 having a diameter slightly smaller than the screw portion 47 in the middle portion, and a tapered female screw portion 5 in the rear portion.
2 The hose connecting fitting 5 is attached to the rear female thread portion 52.
The tapered male screw portion 53 in front of 4 is screwed in. On the other hand, the nozzle 4 having the female screw portion 47 and the cylindrical portion 51 of the through hole has the male screw portion 46 and the cylindrical portion 49 whose outer surface shapes correspond to each other.
1 is screwed in from the front, and the O-ring 50 is fitted in the annular groove formed on the outer peripheral surface of the cylindrical portion 49 to seal between the cylindrical portion 51 of the hole and the outer peripheral surface of the nozzle 41.

A small-diameter central through hole 43 is formed in the nozzle 41, a bottomed recess 42 is formed in the front end face, and a cylindrical recess 48 is formed in the rear end face. Forming a plurality of passageways 44 of pores. Attach the tip nozzle part of this sprinkler to a disintegrating crusher, attach the crusher to the arm tip of the backhoe, and connect the high-pressure water supply hose to the pump via the on-off valve attached to the operator's cab of the backhoe. The point to do is the same as that of the above-mentioned embodiment.

[0030]

In the sprinkler of the present invention, each jet is generated by causing a straight jet and a plurality of diagonal jets, which are central in the nozzle, to radiate from the jet outlet and then collide the oblique jet with the straight jet. It is characterized in that the water molecules in the water are disturbed by each other and change intricately to be atomized. In this nozzle, by directing the direction of the outer oblique jet in addition to the central straight jet, the direction of movement of water molecules after colliding with the central straight jet is largely diffused in the radial direction. However, the forward speed can be advanced and sprinkled over a wide area without declining significantly. As a result, when the nozzle is directed toward the object to be crushed, the high pressure water becomes rainy or mist-like and spreads over a wide area, so that the object to be crushed can be evenly wetted and the generation of dust can be suppressed.

The front end face of the nozzle used in this sprinkler is located deeper than the surface of the frame or arm component of the crusher or the surface of the attached member, and the nozzle is embedded inside the equipment. Moreover, since the outlet of each jet is opened inside the recess provided in the front end face of the nozzle, the object to be crushed does not directly collide with the opening at the tip of the nozzle during dismantling work, etc. Since the crusher is protected by the crusher itself, there are almost no accidents such as clogging of the nozzle holes and damage / wear of the nozzles.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a main part of a water sprinkler according to the present invention.

FIG. 2 is a schematic sectional view showing a modified example of the present invention.

FIG. 3 is a schematic sectional view showing another modification of the present invention.

FIG. 4 is an overall side view showing, together with a backhoe, a crusher for dismantling and crushing work to which the water sprinkler of the present invention is attached.

FIG. 5 is a schematic sectional view showing a main part of a conventional water sprinkler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nozzle 2 Recess 3 Central through hole 4 Passage 5 Opening 18 Through hole 16 Hose connection fitting 17 Auxiliary member 80 Crusher 89 Water supply hose 90 Open / close valve 92 Pump

Claims (5)

[Claims] 1. High-pressure water is sent to a nozzle, guided to a nozzle tip through a center through hole provided in the nozzle and a plurality of inclined passages around the center through hole, and when the water is emitted from each opening as a jet flow, The jets are radiated straight ahead, and jets from multiple passages around the jets are deflected diagonally forward toward the center of each other so that the jets collide with each other in the vicinity of the front of the nozzle, and each jet The water molecules in the water are disturbed by the high-speed rectilinear motion and the repulsion caused by the collision to be atomized, and diffused widely from the crushing arm of the crusher toward the front. The water sprinkling method that suppresses the generation of dust and calms the dust generated during the crushing process by attaching water droplets. 2. A sprinkler which is attached to the arm tip of a work trolley such as a backhoe and is attached to a crusher for demolition of buildings or crushing of concrete lumps, the frame of the crusher and a crushing arm base. A through hole is formed in a part of or in an auxiliary member attached to it, which faces the front part of the arm,
A nozzle is inserted into the through hole so that the front end face of the nozzle is located deeper than the equipment surface, and a means for connecting a water supply hose is provided at the rear portion of the through hole, and the nozzle has a small diameter center. By forming a through hole and forming a plurality of inclined passages that extend obliquely forward from the rear end face of the nozzle toward the center of the nozzle, when high-pressure water is injected into this nozzle, it is ejected from the central through hole of the nozzle. A sprinkling device configured such that a straight jet and an oblique jet ejected from each inclined passage collide with each other near the front of the nozzle. 3. A bottomed recess is formed on the front end face of the nozzle,
The small-diameter central through hole communicates the nozzle rear end face with the recess, and penetrates the inclined passage of the pore extending obliquely forward toward the center of the nozzle to the inner peripheral surface of the recess. apparatus. 4. A female screw portion is formed on an inner peripheral surface in front of a through hole formed in an auxiliary member attached thereto, and a male screw which is fitted to the female screw portion is formed on an outer peripheral surface of the nozzle. The apparatus according to claim 2, wherein a portion is formed, the nozzle is screwed into the through hole so as to be positioned deeper than the surface of the equipment, and watertightness is maintained by fitting both tapered screw portions. 5. A through hole formed in an auxiliary member or the like attached thereto has a tapered female screw portion and a smooth cylindrical portion formed on the front inner peripheral surface thereof, while the nozzle has the above-mentioned outer peripheral surface formed on the outer peripheral surface thereof. It has a male threaded portion that fits into the tapered female threaded portion and the cylindrical portion of the through hole and a smooth cylindrical portion, and a watertight sealing material is interposed between this through hole and the corresponding cylindrical portion of the nozzle. The apparatus according to claim 2, wherein the nozzle is screwed into the through hole, and the nozzle is positioned deeper than the surface of the equipment.