JP2000301020A - Dust guard for crushing work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent dust or the like generated in crushing work by a crushing work machine from being scattered by spraying water into which a foaming agent is incorporated over materials to be crushed. SOLUTION: In the case of, in order to effectively prevent dust or the like generated in crushing work by a breaker 8 or the like with which a crushing work machine 2 is provided from being scattered, operating a dust guard 14 using a foaming agent incorporating device 20, for example, a water pump of a pressure water source 16 is operated or a valve for opening/closing the pressure water source 16 is opened to feed pressure water into the foaming agent incorporating device 20 through a conduit 18. Then, the foaming agent incorporating device 20 into which the pressure water has been fed forms foaming agent incorporated water 12, which is forcibly fed to a foaming water spray device 24 installed in the breaker 8 through a conduit 22. The foaming agent incorporated water 12 is sprayed in bubbles toward materials to be crushed 10 from a jetting port of the foaming water spray device 24 to cover the materials to be crushed 10 of the breaker 8 with this foaming agent incorporated water having the form of bubbles and prevents dust generated in crushing work from being scattered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust proofing device for a crushing machine, and more particularly, to a method for effectively preventing scattering of dust and dust generated in a crushing operation by a crushing device such as a breaker provided in the crushing machine. The present invention relates to a dustproof device for a crushing machine that can be prevented.

[0002]

2. Description of the Related Art When crushing objects, such as rocks and concrete structures, with a crushing device, such as a breaker or a crusher, provided in a crushing machine, a large amount of dust and dust is generated and scattered. The dust deteriorates the environment of the work site and its surroundings, and also penetrates into sliding parts of the machine such as a crusher, causing the machine to break down and shortening its life. Therefore, in the crushing operation, an operator sprays water on the crushing target with a hose or the like to prevent scattering of dust.

[0003]

The crushing operation using the crushing machine of the above-described type has the following problems to be solved.

(1) Dust prevention: Water is sprayed to prevent scattering of dust. However, since the sprayed water is in the form of mist or water droplets, scattering of dust cannot be sufficiently prevented. In addition, the sprinkled water is quickly washed away, and the dustproof effect is small.

(2) Watering worker: In the crushing operation, a watering worker for watering is required separately from the operator of the crushing machine. Therefore, the cost of the crushing operation increases. Also, since the watering worker is located near the object to be crushed,
Sufficient consideration must be given to the safety of sprinklers and the method of crushing work.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and a technical problem of the present invention is to provide a crushing working machine capable of effectively preventing scattering of dust and dust generated during crushing work by the crushing working machine. It is to provide a dustproof device.

[0007]

According to the present invention, there is provided a dustproofing device for a crushing machine which solves the above technical problem, which comprises spraying water mixed with a foaming agent on an object to be crushed. Provided.

[0008] The foaming agent-mixed water is sprayed on the object to be crushed, and the bubbles prevent the scattering of dust and dust.

[0009] In a preferred embodiment, the dustproof device comprises:
The apparatus includes a foaming agent mixing device connected to a pressure fluid source for generating mixed water of the blowing agent, and a foaming sprinkler for spraying the mixed water. The blowing agent mixing device includes a blowing agent tank that stores the blowing agent, a choke that forms a throttle flow path of the pressure water supplied from the pressure fluid source, and an opening that opens to the choke by communicating with the blowing agent tank. Nozzle. An adjusting means for adjusting the flow rate of the blowing agent is provided between the blowing agent tank and the nozzle.

The blowing agent mixing device mixes the blowing agent guided to the nozzle by the pressure drop when the pressure water passes through the chalk into the pressure water, and the pressure water mixed with the blowing agent is sprayed and foamed by the foaming sprinkler. Is done.

In another embodiment, the blowing agent mixing device includes a blowing agent tank for storing the blowing agent, a water tank for storing water, and a throttle flow path for compressed air supplied from the pressure fluid source. And a nozzle communicating with each of the foaming agent tank and the water tank and opening to the choke. An adjusting means for adjusting the flow rate of the foaming agent and the water is provided between each of the foaming agent tank and the water tank and the nozzle.

The blowing agent mixing device mixes the blowing agent and water guided to the nozzle by the pressure drop when the compressed air passes through the chalk together with the compressed air, and the blowing agent mixed water mixed with the compressed air is foamed. Sprinkled and foamed by a sprinkler.

Further, the foaming sprinkler is provided in a crusher mounted on the crusher.

Then, the water mixed with the foaming agent is sprinkled appropriately and effectively from the nearest position to the object to be crushed where dust is generated.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a dustproof device for a crushing machine constructed in accordance with the present invention will be described below in more detail with reference to the accompanying drawings.

Referring to FIG.
Is a crushing machine body 4 based on a hydraulic shovel, a breaker 8 which is a crushing device attached to the tip of a working arm 6 of the crushing machine body 4, and a crushing object such as rock. The apparatus is provided with a dustproof device indicated by reference numeral 14 as a whole for spraying the blowing agent-mixed water 12 with respect to 10.

The dustproof device 14 is connected to a pressure fluid source 16 for outputting pressurized water by a pipe 18 through a pipe 18 and is connected to the foaming agent mixing apparatus 20 by a pipe 22 and provided to the breaker 8. And a foaming sprinkler 24.

The pressure water source 16 as a pressure fluid source has a water tank and a water pump (not shown). The pressure water source 16 does not need to be installed in the crushing machine 2 if the movement of the crushing machine 2 itself is small during operation and it is easy to secure a water pressure source such as tap water. May be connected to the crushing machine main body 4.

Referring to FIG. 2, a foaming agent mixing device 20 includes a foaming agent tank 28 containing a foaming agent 26,
The choke 30 includes a choke 30 that forms a throttle flow path for the pressure water 17 guided by the pipe 18, and a nozzle 32 that communicates with the foaming agent tank 28 and opens to the choke 30. The blowing agent mixing device 20 also includes an adjusting unit 34 for adjusting the flow rate of the blowing agent 26 flowing from the blowing agent tank 28 to the nozzle 32. The pipeline 22 is connected to the downstream side of the choke 30. The foaming agent tank 28 is substantially sealed, and a check valve 36 is provided at the top of the foaming agent tank 28 to allow air to flow in from outside to inside the tank. Adjusting means 3
4 is provided with a manual butterfly valve type throttle valve for adjusting the size of the area of the flow path 29 through which the foaming agent 26 flows. The foaming agent 26 is filled from an inlet (not shown) provided in the foaming agent tank 28.

The foaming agent 26 is a liquid foaming agent which is mixed with water to promote the formation of foams, for example, a higher fatty acid or a sodium salt of a mixture thereof, and so-called soaps and detergents can be used.

The blowing agent mixing device 20 constructed as described above
In the above, the pressure of the pressure water 17 flowing into the choke 30 from the pressure water source 16 via the pipe 18 drops when passing through the choke 30, and the blowing agent 26 in the blowing agent tank 28 Nozzle 3 opening to
It is sucked out from 2 and mixed into the pressurized water 17. The foaming agent-mixed water 12 in which the foaming agent 26 is mixed into the pressure water 17 flows into the pipe 22. The amount of the foaming agent 26 mixed into the pressure water 17 is determined by the throttle valve 3
4 is adjusted. Foaming agent tank 28
The check valve 36 provided at the top of the nozzle prevents negative pressure in the foaming agent tank 28 and stabilizes the suction of the foaming agent 26 from the nozzle 32.

Continuing the description with reference to FIGS. 3 and 4,
The breaker 8 is a well-known device, and includes a pair of support plates 38 mounted on the working arm 6 (FIG. 1) of the crushing machine body 4.
a and 38b, a cylinder device 40 disposed between the support plates 38a and 38b, and a circle having one end slidably inserted into a cylinder hole of the cylinder device 40 and a hitting portion formed at a protruding end at the other end. And a rod-shaped chisel 42. Pressure oil is guided into the cylinder device 40 from a hydraulic operation device (not shown) of the crushing machine body 4 by a hydraulic hose 44, and the supply of the pressure oil causes the chisel 42 to be hit. The foaming sprinkler device 24 includes spouts 44a and 44b provided at the end of the cylinder device 40 from which the chisel 42 projects, and flow passages 46a and 46b formed in the cylinder device 40 and connected to the spouts 44a and 44b, respectively. It has. The ejection ports 44a and 44b are slightly narrower than the flow paths 46a and 46b. These flow paths 46a and 46
b, an opening 3 formed in the support plate 38a of the breaker 8;
Through 9, a conduit 22 from a foaming agent mixing device 20 is connected.

In the foaming and sprinkling device 24 configured as described above, the blowing agent-mixed water 12 guided from the blowing agent mixing device 20 through the conduit 22 increases in flow velocity at the jet ports 44a and 44b to form a foam. Sprinkled. The state of generation of bubbles is adjusted by operating the throttle valve 34 of the blowing agent mixing device 20 to change the amount of the blowing agent 26 by adjusting the mixing ratio of the pressure water 17 of the blowing agent mixing water 12 and the blowing agent 26.

Referring to FIG. 5, a description will be given of a foaming agent mixing apparatus, which is another embodiment of the present invention, and which is designated by reference numeral 50 as a whole. The blowing agent mixing device 50 is connected to the above-described pressure fluid source 16.
Compressed air is used as the pressure fluid instead of the pressure water. The blowing agent mixing device 50 is provided with a water tank 54 for generating the blowing agent mixing water 12 and the blowing agent mixing device 2.
0. Therefore, in the following description, substantially the same parts as those of the foaming agent mixing device 20 are denoted by the same reference numerals, and description thereof will be omitted.

The foaming agent mixing device 50 includes a foaming agent tank 28.
A water tank 54 containing water 52; and a compressed air 57 guided by a line 18 from a compressed air source 56 as a source of pressurized fluid.
30 that forms a throttle flow path of
8 and a nozzle 32 communicating with the water tank 54 and opening to the choke 30. The water tank 54 is substantially sealed, like the foaming agent tank 28, and has a check valve 36 at the top thereof to allow air to flow in from outside the tank. An adjusting means 58 for adjusting the flow rates of the foaming agent 26 and the water 52 is provided between each of the blowing agent tank 28 and the water tank 54 and the nozzle 32. The adjusting means 58 includes a manual butterfly-type throttle valve 60 for adjusting the size of the area of the flow path through which the mixture of the blowing agent 26 and the water 52 flows to the nozzle 32.
A manual butterfly-type throttle valve 62 provided between the blowing agent tank 28 and the throttle valve 34, and a manual butterfly-type throttle valve 64 provided between the water tank 54 and the throttle valve 34. It has. Water 52 is filled from an inlet (not shown) of a water tank 54.

The blowing agent mixing device 50 constructed as described above
When compressed air 57 flows into the choke 30 from the compressed air source 56 via the conduit 18, the pressure drops due to the throttle action when passing through the choke 30, and the blowing agent flows from the nozzle 32 opened to the choke 30. The blowing agent 26 in the tank 28 and the water 52 in the water tank 54 are sucked out and mixed with the compressed air 57 to generate the blowing agent mixed water 12. The foaming agent mixed water 12 is supplied to the foaming sprinkler 2
4 The mixing ratio of the foaming agent 26 and the water 52 is determined by the opening degrees of the throttle valve 62 and the throttle valve 64 of the adjusting means 58.
The mixing ratio of the mixed water and the compressed air 57 is adjusted by the opening of the throttle valve 60. Foaming agent tank 2
8 and the water tank 54 are provided with check valves 36 respectively.
This prevents negative pressure inside and stabilizes the suction of the blowing agent 26 and water 52 from the nozzle 32. This blowing agent mixing device 50
Since the compressed air 57 is used as the compressed fluid, the foaming agent 26 sufficiently mixes with the water 52 in the pipe 22 even if the amount of the water 52 is small. Further, since the compressed air 57 is used, if the throttle valve 60 is closed, only the compressed air 57 is ejected from the ejection ports 44a and 44b of the foaming and sprinkling device 24, so that the dust can be blown off by the compressed air 57 and water is used. It can be used for objects that cannot be crushed, crushing sites, and the like.

The operation of the dustproof device of the crushing machine as described above will be described with reference to FIGS.

(1) Operation of dustproofing device: foaming agent mixing device 2
To operate the dustproof device 14 using the pressure water source 1
6, for example, by operating a water pump or a pressure water source 16
The valve (not shown) for opening and closing the water is opened, and the pressure water 19 is opened.
Is supplied to a foaming agent mixing device 20 via a pipe 18. The blowing agent mixing device 20 to which the pressurized water 19 is supplied generates the blowing agent mixed water 12 as described above, and the generated blowing agent mixed water 12 is supplied to the breaker 8 via the conduit 22 in the foaming sprinkler device. 24. Then, the foaming agent-mixed water 12 is foamed from the ejection ports 44a and 44b and becomes
Sprayed towards zero. When the blowing agent mixing device 50 is used, an opening / closing valve (not shown) of the compressed air source 56 instead of the above-described pressure water source 16 is opened, and the compressed air 57 is supplied through the pipe 18 to the blowing agent mixing device 50. Can be supplied to

(2) Prevention of scattering of dust: The sprayed foaming agent-mixed water 12 covers the object 10 to be crushed by the breaker 8 in the form of a foam, thereby preventing the dust generated by the crushing operation from scattering. These bubbles have a large dust-proof effect because they are in a state where a complete film is continuous without water droplets or mist, and because they cover the crushed object 10 and form a multi-layered film. Since the foam has a volume equal to or larger than the water film as a characteristic of the foam, and has a viscosity equal to or higher than the water film, the foam is not easily washed away with the object 10 to be crushed. Therefore, it is possible to prevent the problem that dust deteriorates the work site and the surrounding environment in the crushing work, the problem that the dust enters the sliding parts of the machine such as the crushing device and the like, which causes the machine to malfunction and shorten the life, and the like. .
The state of the foam, that is, the mixing ratio of the foaming agent and water,
The viscosity can be easily adjusted to an arbitrary value according to the state of the crushing operation, for example, by a throttle valve provided in the foaming agent mixing device so that the viscosity does not flow down from the crushing object.
When the amount of dust is small, the opening of the throttle valve is reduced to adjust the amount of foam generated by reducing the opening.

(3) Reduction of crushing operation cost: Since there is no need for an operator for watering unlike the conventional case, the crushing operation cost can be reduced. Further, since there is no need to arrange an operator near the object to be crushed, the crushing operation can be performed safely.

(4) Power of the dustproof device: The power for generating and spraying the water mixed with the blowing agent includes pressure water, such as tap water, which is a pressure fluid that can be easily used in a crushing machine or a crushing work site. Since the compressed air from the air compressor is used, there is no need to install a special power source.

As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments, and can be variously modified or modified within the scope of the present invention. It is.

(1) Type of crusher: In the embodiment of the present invention, the breaker 8 is used as the crusher of the crusher 2 to which the dustproof device 14 is applied, but the crusher is limited to the breaker 8. It is not something to be done. For example, a device such as a crusher that crushes an object to be crushed may be used.

(2) Installation location of the foaming sprinkler: In the embodiment of the present invention, the foaming sprinkler 24 is provided on the breaker 8 of the crusher, but the installation location is not limited to the crusher. Instead, it can be installed at an appropriate position such as the crushing machine main body 4 depending on the object and form of the crushing operation.

[0035]

According to the dust prevention apparatus for a crushing machine constructed in accordance with the present invention, a crushing machine capable of effectively preventing scattering of dust and dust generated in the crushing operation by the crushing machine. A dustproof device is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a crushing machine having a dustproof device configured according to the present invention.

FIG. 2 is a sectional view of a foaming agent mixing device.

FIG. 3 is a perspective view of a breaker as a crushing device and a foam watering device.

4 is a cross-sectional view of a part of a spout of a foaming sprinkler in the breaker shown in FIG. 3;

FIG. 5 is a sectional view showing another embodiment of the foaming agent mixing device.

[Explanation of symbols]

 2: crushing machine 8: breaker (crushing device) 10: crushing object 12: foaming agent mixed water 14: dustproofing device 16: pressure water source (pressure fluid source) 20: foaming agent mixing device 24: foaming sprinkler 26: foaming Agent 28: foaming agent tank 30: choke 32: nozzle 34: throttle valve (adjusting means) 50: foaming agent mixing device 54: water tank 56: compressed air source (pressure fluid source) 58: adjusting means

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Hamada 7-14, Wadamiyadori 7-chome, Hyogo-ku, Kobe-shi, Hyogo F-term (reference) in Seiryo Engineering Co., Ltd. 2E176 DD11 DD64 3C060 CE20 3C069 AA05 BA10 BB04 CA01 CA07 DA01 DA06 DA07 EA03 4D067 DD04 DD06 EE41 EE50 GA02 GA06 GB10

Claims (7)

[Claims] 1. A dustproof device for a crushing machine, wherein water containing a foaming agent is sprayed on an object to be crushed. 2. The dustproofing device according to claim 1, further comprising: a foaming agent mixing device connected to a pressure fluid source for generating water mixed with the blowing agent; and a foaming water spraying device spraying the mixed water. Dust proofing equipment for crushing work machines. 3. The foaming agent mixing device communicates with the foaming agent tank, the foaming agent tank accommodating the foaming agent, a choke forming a throttle flow path of pressurized water supplied from the pressure fluid source, and the foaming agent tank. The dustproof device for a crushing machine according to claim 2, further comprising a nozzle opening to the choke. 4. The dustproofing device for a crushing machine according to claim 3, further comprising an adjusting means for adjusting a flow rate of the foaming agent between the foaming agent tank and the nozzle. 5. A foaming agent mixing device, comprising: a foaming agent tank containing the foaming agent; a water tank containing water; and a choke forming a throttle channel for compressed air supplied from the pressure fluid source. A nozzle communicating with each of the foaming agent tank and the water tank and opening to the choke.
A dustproof device for the crushing machine described. 6. The crushing machine according to claim 5, further comprising an adjusting means for adjusting a flow rate of the blowing agent and the water between each of the blowing agent tank and the water tank and the nozzle. Dustproof device. 7. The dustproofing device for a crushing machine according to claim 2, wherein the foaming sprinkler is provided in a crushing device mounted on the crushing machine.