JP5801524B2 - Asbestos removal equipment for chimneys - Google Patents

Description

  The present invention relates to a chimney asbestos removal apparatus that removes asbestos lining material of a chimney with high-pressure water.

  Most of the chimneys of cylindrical structures connected to boilers and the like built in the Showa era are lining materials containing asbestos (chimney asbestos insulation, hereinafter referred to as “ Asbestos material)). Since the inside of the chimney is a passage of hot acid gas, the asbestos fibers are broken when the bonding material deteriorates due to the gas, the asbestos material is peeled off, and asbestos is deposited at the leg inspection port of the chimney. If smoke is exhausted in such a state, the asbestos fibers on the inner wall of the chimney may be discharged into the atmosphere together with the smoke. Inhalation of asbestos fibers can cause mesothelioma and lung cancer, so production and import of asbestos is now prohibited, and measures to prevent asbestos scattering are now mandatory.

Currently, in order to solve the above problems, asbestos pipe crushing devices and chimney cleaning devices that clean the inner wall of the chimney by blast cleaning using high-pressure water are provided (for example, Patent Document 1 and Patent Document 2).
JP 2002-70331 (FIGS. 3 and 4) JP-A-9-248536 (FIGS. 1 and 2)

  In the asbestos tube crushing device of Patent Document 1, two channels are provided at positions where a channel for introducing high-pressure water to the nozzle head is shifted by a predetermined distance from the center of the nozzle head, and high-pressure water is supplied from a nozzle attached to the channel. In this configuration, a rotational force is generated in the nozzle head by ejecting the nozzle. That is, the asbestos pipe crushing device of Patent Document 1 uses a reaction force of high-pressure water ejected from a nozzle to rotate the nozzle head and rotate the nozzle to crush the asbestos pipe embedded in the building's housing with high-pressure water. It was to be removed.

  The chimney cleaning device of Patent Document 2 has a nozzle head including a straight nozzle and a bent nozzle. The high-pressure water sprayed from the straight nozzle is sprayed on the surface of the asbestos pipe of the chimney. On the other hand, the high-pressure water ejected from the bending nozzle gives a thrust in the circumferential direction to the nozzle head by the ejection, and rotates the nozzle head at an appropriate speed. That is, the chimney cleaning device of Patent Document 2 rotates the nozzle head by the reaction force of the high-pressure water ejected from the bending nozzle, rotates the straight nozzle, and cleans the chimney stack with the high-pressure water. .

The devices of the above two patent documents rotate the nozzle head at an appropriate speed using the reaction force of high-pressure water. Therefore, the nozzle head is rotated in addition to the high-pressure water sprayed on the asbestos pipe of the chimney. It was also necessary to supply high pressure water.
When the asbestos material of the chimney is removed using the above apparatus, the high-pressure water injected from the nozzle after the removal treatment becomes contaminated water (industrial waste) containing asbestos fibers. In order to dispose of the industrial waste, it is necessary to recover and purify the industrial waste. However, the conventional apparatus has a problem that a large amount of industrial waste is discharged.

  SUMMARY OF THE INVENTION In order to solve the above-described problems, an object of the present invention is to provide a chimney asbestos removal apparatus that can suppress discharge of industrial waste by high-pressure water by rotating a nozzle head without using a reaction force of high-pressure water. It is what.

A chimney asbestos removal apparatus according to the present invention includes a rotor for supplying high-pressure water to a nozzle for injecting high-pressure water, and a main body having a rotary joint for feeding high-pressure water into a water conduit of the rotor and mounting the rotor inside. When a high-pressure water supply device for supplying high pressure water to the rotor, the air motor coupled to the rotor, there is provided a nozzle head connected to the rotor, from the nozzle of the amount necessary to separate and remove the chimney asbestos insulation material injecting high-pressure water, and is provided with a speed controller to adjust the speed and torque for driving the nozzle head to the air motor, by adjusting the turning speed of the nozzle with a speed controller, contaminated water by high pressure water It is intended to suppress the discharge of water.

  The chimney asbestos removal apparatus of the present invention controls the nozzle head at a predetermined rotational speed using an air motor. As a result, the nozzle only needs to be supplied with high-pressure water necessary only to remove asbestos material, so that the amount of contaminated water (industrial waste) containing asbestos fibers can be reduced, and the purification process can be reduced. be able to.

  This invention implement | achieves suppressing the discharge | emission amount of the industrial waste containing the asbestos fiber discharged | emitted by the asbestos removal process using high pressure water.

A chimney asbestos removal apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a view showing the main part of the asbestos removal apparatus for a chimney according to the present invention.
The chimney asbestos removal apparatus 10 includes an apparatus main body (body) 18 having a rotary joint (rotary joint) 16 that feeds the high-pressure water 14 into the water conduit of the rotor 12, and a high-pressure water supply apparatus 20 that supplies the high-pressure water 14 to the rotor 12. And an air motor 22 for driving the rotor 12 and a nozzle head 24 connected to the rotor 12. A nozzle 26 for injecting high-pressure water 14 supplied from the high-pressure water supply device 20 via the rotor 12 is attached to the nozzle head 24. The apparatus body 18 is provided with an eye nut (or eye bolt) 28. In FIG. 1, the apparatus body 18 is a hoisting machine (for example, an electric chain block or hoist) (not shown) via a suspension member (rope) 30. Suppose that it is suspended in the chimney 32.

An air motor base 34 is fixed to the upper part of the apparatus main body 18. A front end portion 12a of the rotor 12 is inserted into a coupling (shaft joint) 36 provided in the air motor base 34 and fixed by a predetermined fixing member (screw). By inserting the rotating shaft 22 a of the air motor 22 into the coupling 36, the rotor 12 and the air motor 22 can be connected by the coupling 36. When compressed air 38 supplied from an air pump (not shown) to the air motor 22 through a hose is sent from the supply port 22a, the power of the air motor 22 is transmitted to the rotor 12 to be connected. The air 38 sent from the supply port 22b passes through the inside of the air motor 22 and is discharged into the chimney 32 from the exhaust port 22c.
A bearing retainer 40 is fixed to a lower portion of the apparatus main body 18 with a predetermined fixing member (bolt). Further, it is assumed that the rotor 12 is mounted in the casing 42 and is provided so as to rotate freely under the power of the air motor 22.

  The lower end 12 b of the rotor 12 is inserted into the flow path 24 a of the nozzle head 24, and the nozzle head 24 is connected to the rotor 12. The high-pressure water 14 supplied from the high-pressure water supply device 20 passes through the inside of the rotor 12 (high-pressure water conduit) and is discharged to the flow path 24a of the nozzle head 24 and from the nozzle 26 attached to the flow path 24a. Be injected. In this case, an amount of high-pressure water 14 necessary for peeling and removing the asbestos material 32a is jetted from the nozzle 26. Thereby, in the conventional apparatus, supply of the high-pressure water 14 used as power for rotating the nozzle head 24 becomes unnecessary, and discharge of industrial waste containing asbestos fibers can be suppressed.

According to the air motor 22, the rotation speed and torque for driving the nozzle head 24 can be easily adjusted by a speed controller or the like, unlike a conventional device that drives the nozzle head by the reaction force of high-pressure water. Therefore, the rotation speed of the nozzle head 24 (or the turning speed of the nozzle 26) can be easily controlled. Unlike an electric motor, when it is overloaded, it automatically stops, so work safety can be achieved. Attachment to the apparatus main body 18 is also easy. When using an electric motor, it is necessary to ensure waterproofing.
Moreover, it is smaller and lighter than an electric motor, and high power can be obtained. By using the air motor 22 as a drive source for the nozzle head 24, the entire apparatus can be reduced in size and weight, and handling during work is facilitated. Further, since the air motor operates with compressed air, it is possible to safely perform work in a place where combustible gas is generated.

  As another motor for driving the nozzle head 24, a motor utilizing hydraulic pressure is conceivable. However, when the motor is operated with a fluid such as oil pressure, it is necessary to provide a hose for discharging them in addition to the hose that supplies the oil pressure to the motor. Further, when the hose is ruptured due to deterioration or damage, the recovery process of oil discharged from the hose becomes a problem. The air motor 22 has an advantage that the air 38 supplied to the air motor 22 can be discharged into the chimney 32 as it is from the exhaust port 22c, and no problem occurs even if the hose is ruptured.

  As described above, according to the asbestos removal device for a chimney of the present invention, the nozzle head can be driven without using the reaction force of the high-pressure water, so that the supply of high-pressure water that has been conventionally used as power for driving the nozzle head is provided. Is no longer necessary. Thereby, it becomes possible to suppress discharge of industrial waste (contaminated water) containing asbestos fibers discharged in the asbestos removal operation.

It is a figure showing the principal part of the asbestos removal apparatus for chimneys of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Asbestos removal apparatus for chimneys 12 Rotor 14 High pressure water 16 Rotary joint 18 Main body 20 High pressure water supply apparatus 22 Air motor 24 Nozzle head

Claims (1)

A rotor that supplies high-pressure water to a nozzle that injects high-pressure water, a main body having a rotary joint that feeds high-pressure water into a water guide channel of the rotor and that has a rotor mounted therein, and a high pressure that supplies high-pressure water to the rotor A water supply device, an air motor connected to the rotor, and a nozzle head connected to the rotor, the amount of high-pressure water required for peeling and removing the chimney asbestos insulation from the nozzle is jetted, and the air motor is A speed controller that adjusts the number of rotations and torque for driving the nozzle head is provided, and the turning speed of the nozzle is adjusted using the speed controller, thereby suppressing discharge of contaminated water due to high-pressure water. Asbestos removal equipment for chimneys.

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