JPH0368191B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a concrete structure demolition device,
In particular, the present invention relates to a device for dismantling concrete structures using a concrete melting rod as the thermite method, which is a type of construction method using flames.

<Conventional technology> The Thermite method uses a concrete melting rod made of aluminum alloy or iron alloy, which is operated by a worker wearing flame-retardant clothing, to eject and burn oxygen and light oil from the tip of the rod to melt concrete. This is a method of dismantling it. When performing drilling work on this object, the ultra-high temperature melting rod and molten slag from the dismantled material will flow out, the spatter will scatter, and the temperature will exceed approximately 1000℃.
A large amount of fume, which can reach up to 3,500 degrees Celsius, is generated, which poses problems for the health and safety of workers as well as the working environment around the workplace. In particular, the outflow of molten slag and the scattering of spatter can cause fires.
In addition, the occurrence of hume causes fire accidents and impacts on human lung function, and it cannot be ignored due to the pollution problem, but the current situation is that there are no sufficient measures to deal with it due to the ultra-high temperature treatment. .

<Problems to be Solved by the Invention> Therefore, the present invention attempts to solve the above-mentioned conventional problems, that is, to improve the safety of workers and the environment of the workplace. The purpose of the present invention is to provide a concrete structure demolition device whose main purpose is to prevent fumes from scattering, and to cool and discharge fumes.

<Means for Solving the Problems> The present invention has been made in view of the above-mentioned problems, and its gist is a demolition device for drilling reinforced concrete as a body to be perforated by flame using a concrete melting rod. The apparatus includes a heat-resistant device surrounding the body to be drilled, the device having a through hole for slidably holding the concrete melting rod, and an opening provided around a location where the tip of the concrete melting rod abuts the body. a water cooling means provided inside the box body to cool down the molten slag, spatter and fume generated by the perforation; and a fan blowing particles consisting of a mixture of water vapor generated by the water cooling means and the fume. This equipment consists of a dust collector with a built-in filter that collects dust through a suction pipe.

Therefore, in this invention, the through hole and the opening in the box body and the concrete melting rod movably held in the box body can be set horizontally to drill the side surface of the body to be drilled, or the opening can be directed upward. The opening can be moved downward to drill a hole in an upper object to be drilled, or the opening can be moved downward to drill a hole in a lower object.

The box body consists of a heat-resistant enclosing frame made of metal or the like with an opening in contact with the object to be drilled on one side, and allows water or spray guided from the outside by a water spray header or spray nozzle as a cooling means. This process is performed without scattering the molten slag, spatter, or fume that has been cooled by the process.

<Function> In this invention, the water cooling means in the box body sprays cooling water toward the melted slab and accumulated spatter to prevent cooling and scattering, thereby reducing the fume of water vapor generated. The air-fuel mixture is cooled by spraying cooling water and inside the suction conduit, and fine dust is collected by the filter of the dust collector by condensing water vapor.

<Example> Next, a preferred example of the concrete structure of the present invention will be described based on the attached drawings.

FIG. 1 is a partially cutaway perspective view showing a concrete structure demolition apparatus according to the present invention. In the figure, a hexahedral steel suction box 3 has a front opening that comes into contact with a reinforced concrete perforated body 1 on one side thereof, and a through hole on the other rear surface facing this. . In this through-hole, it is possible to slide horizontally a concrete melting rod 2 that applies its tip to the object 1 to be drilled and melts itself while emitting flames to form the perforated part 1' of the object 1 to be drilled. It is held in

Inside the box body 3, a predetermined number of hook-shaped water spray headers 4, each having a large number of water spray holes 4' as a water cooling means, are arranged at appropriate intervals in the upper part of the headers 4. Water pumped from outside is sprayed by the concrete dissolving rod 2 toward the slag 12 that has melted and flowed out from the side of the drilled body 1, and the spatter 13 and fume 14 that have accumulated on the inner surface and inner bottom surface of the box body 3. I have to. In addition, the through hole of the concrete melting rod 2 provided in the box body is provided with the purpose of preventing the spatter 13 that has jumped out from the perforation 1' from scattering to the outside and holding the melting rod in a slidable manner. It is preferable to include an elastic penetrating member 6 made of heat-resistant hard rubber or the like having radial cuts.

A partition plate 8 is provided at the rear and upper part of the box body 3 to separate it from the cooling section using the water cooling means, and an intake conduit 7 is connected to the upper part of the box body within the partition via an exhaust gas conduit connection part 7'. It is connected to a dust collector 9 having a built-in suction fan 9' and a bag filter. This dust collector 9 is for collecting dust such as flue gas and fume 14 generated by the perforation.
are particles of 1μ or less, and when mixed with the water vapor 15 generated by the cooling of the water cooling means, the particle size becomes such that it can be captured by a bag filter, but the formation of this particle size is For smooth formation, a spray nozzle 5 may be provided at the front bottom of the box 3 as a water cooling means. The spray nozzle 5 is configured to spray water from a pressure feed hose 17 in the direction of the elastic penetrating member 6 and the exhaust gas conduit connection 7'.

FIG. 2 illustrates the state of cooling and dust collection of molten slag, spatter, and fume using the concrete demolition apparatus of FIG. 1 according to the present invention. In the figure, molten slag 12 flows out from a perforated portion 1' of a to-be-drilled body 1 that has been perforated by the perforating operation of the concrete dissolving rod 2, sputters 13 are scattered, and fume 14 is generated.

At this time, inside the box body 3, cooling water is sprayed from the pressure feed hose 17 through a large number of water spray holes 4' provided in the water spray header 4, and the molten slag 12 flowing out along the side surface of the perforated hole 1 and the suction can Due to the high heat of the spatter 13 deposited on the bottom surface of the sputter 3, a large amount of water vapor is generated.

In addition, by operating the suction fan 9' attached to the dust collector 9 with a built-in bag filter, the generated fume 14 and water vapor 15 are transferred to the bag via the exhaust gas conduit connection 7' and the suction conduit 7. The dust is sent to a dust collector 9 that has a built-in filter.
At this time, the fume 14 and water vapor 15 are mixed at the exhaust gas conduit connection part 7', and are fed from the pressure hose 17 from the spray nozzle 5 provided at the front of the bottom of the box body 3.
By spraying more cooling water, the mixture of fume 14 and water vapor 15 is mixed more uniformly and cooled.

When the mixture of fume 14 and water vapor 15 is cooled by the spray of cooling water and contact with the inner surface of suction conduit 7, water vapor 15 condenses with particles of fume 14 as nuclei, and large particles 16 ( The ultra-high temperature fume 14 has a particle size that can be captured by a bag filter, and the dust collection and exhaust gas can be treated by a dust collector 9 having a built-in bag filter.

Incidentally, the surplus cooling water inside the suction box body 3 is dropped to the outside through a discharge port provided at the lower part of the opening, thereby further cooling the molten slag 12.

The above description describes the suction box body assuming horizontal drilling work, but upward drilling work,
Alternatively, in order to make the suction box 3 suitable for downward drilling work, the form shown in FIGS. 3 and 4 below can be adopted.

FIG. 3 is a partially cutaway perspective view of another embodiment of the suction box adapted for upward drilling operations. In the figure, the upper end of the steel box 3 made of a hexahedron has a flat opening so that it can come into contact with the lower surface of the object to be drilled 1, and the upper inner circumference of the box 3 has a A water sprinkler header 4 in the shape of a letter, a partition plate 8 that separates it from the cooling section, an exhaust gas conduit connection part 7' in the upper part of the partition, and a spray nozzle 5 that projects water toward the partition plate 8 are provided. In addition, at the bottom of the box body 3, a discharge port 10 with a heat-resistant elastic control member having radial cuts and a radial cut is provided to deposit a predetermined amount of molten slag 12 and spatter 13 that fall during drilling work, and An elastic penetrating member 6 is provided to slidably hold the melting rod 2.

During the drilling work in this embodiment, the melted slag 12 and spatter 1 deposited in a predetermined amount on the bottom of the box body 3 are
3, the water sprinkler header 4 as a water cooling means
Cooling water is sprinkled and sprayed by the spray nozzle 5, and a large amount of water vapor is generated.

Further, when the generated water vapor and the fume generated from the perforation are sent to the dust collector 9 having a built-in bag filter, they are mixed at the exhaust gas pipe connection part 7', and further, the fume produced from the perforation part is mixed at the exhaust gas pipe connection part 7'. By spraying cooling water from the spray nozzle 5, water vapor and fume are uniformly mixed and cooled. The cooled water vapor condenses into large particles using hume particles as nuclei,
Ultra-high temperature fumes can be collected and smoke-exhausted using a dust collector with a built-in bag filter.

In addition, the dissolved slag 12 deposited on the bottom of the box body 3
When the sputter 13 reaches a predetermined amount (predetermined weight), the discharge port 10 with an elastic control member automatically opens due to its own weight and falls to the outside. Moreover, the surplus cooling water falls to the outside from between the radial cuts of the discharge port 10 with the elastic control member.

FIG. 4 is a partially cutaway perspective view of another embodiment of the suction box adapted for downward drilling work.

In the figure, the opening of the box 3 has a substantially flat shape so that it can come into contact with the upper surface of the object 1 to be perforated, and water spray headers 4 are placed at the positions shown in the figure on the inside side of the box 3. , a spray nozzle 5, an exhaust gas conduit connection 7', and a partition plate 8 are provided. Also,
An elastic penetrating member 6 is provided on the top surface of the box body 3, and a concrete melting rod 2 is inserted through the center of the box body 3 in the longitudinal direction, and a concrete melting rod 2 is inserted through the center of the box body. The cooling water flows through the hole 1'
A plate-like ring 11 is supported to prevent direct drilling.

During the drilling operation in this embodiment, the molten slag 1 deposited on the lower part of the box 3 or the upper surface of the body 1 to be drilled is
2 and the sputter 13, cooling water is sprayed by a water spray header 4 and a spray nozzle 5 as water cooling means, cooling them and generating a large amount of water vapor at the same time. The generated water vapor and the fume 14 generated from the perforated part 1' are mixed at the exhaust gas pipe connection part 7' when they are sent to the dust collector 9 with a built-in bag filter, as in the above-described embodiment, and are further mixed at the exhaust gas pipe connection part 7'. Towards 7'
By spraying cooling water from the spray nozzle 5, water vapor and fume are uniformly mixed and cooled. The cooled water vapor condenses into large particles using the fume particles as nuclei, and the ultra-high temperature fume can be collected and smoke-exhausted using a dust collector with a built-in bag filter.

Incidentally, the surplus cooling water flows out from the space between the upper surface of the body 1 to be drilled and the lower end of the suction box 3.

<Effects of the Invention> The effects of this invention having the above structure are as follows.

In order to cover the area around the perforation with a box,
It prevents the scattering of melted slag and spatter, and there is no need to wear flame-retardant clothing during work. Moreover, since cooling water is sprinkled and sprayed inside the box, melt, slag, and spatter are cooled down, preventing fires from occurring.

Inside the box, cooling water is sprinkled or sprayed towards the melted slag, spatter, or fume, so a large amount of water vapor is generated, and the ultra-high temperature fume is cooled, and by condensation of the water vapor, Huyum particles appear to have increased particle size and can be easily captured with a normal bag filter.

Since the fume is sucked in by the box that is in contact with the perforation, the amount of exhaust gas to be processed is smaller compared to methods using normal ventilation and smoke evacuation equipment, and the efficiency of fume dust collection and smoke exhaust treatment is improved.

The collected fume particles are mixed with water and adhere to the bag filter or flow down to the lower tray of the dust collector, so when cleaning the dust collector and bag filter, no dust is generated and the dust is collected. It is easy to dispose of garbage.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of the present invention;
The figure is a schematic explanatory diagram showing the state of use of Figure 1, Figure 3 is a partially cutaway perspective view showing another embodiment of the invention adapted for upward drilling work, and Figure 4 is adapted for downward drilling work. FIG. 2 is a partially cutaway perspective view of another embodiment of the present invention. 1... Reinforced concrete body to be drilled, 1'...
Drilling part of the perforated body 1, 2... Concrete melting rod, 3... Suction box, 4... Watering header, 4'... Watering hole provided in the watering header 4, 5
... spray nozzle, 6 ... elastic penetrating member, 7 ... suction conduit, 7' ... exhaust gas pipe connection section, 8 ... partition plate, 9 ... dust collector with built-in bag filter,
9'... Suction fan of dust collector 9, 10... Discharge port with elastic control member, 11... Plate ring, 12...
...dissolved slag, 13...spatter, 14...huum, 15...steam, 16...particles, 17...
...Pressure hose.

Claims (1)

[Scope of Claims] 1. A demolition device for drilling reinforced concrete as a perforated body by flame using a concrete melting rod, the device comprising: a through hole for slidably holding the concrete melting rod; A heat-resistant box that surrounds the object to be drilled and has an opening provided around the point where the tip of the melting rod contacts the object; and a water cooling means for cooling the fume, and a dust collector with a built-in filter that collects particles made of a mixture of water vapor generated by the water cooling means and the fume through a suction conduit using a blowing fan. demolition equipment.