JPS5843981Y2 - In-pipe dust collection vehicle - Google Patents

Description

[Detailed description of the invention] The present invention is a dust collection vehicle that can suction and collect rust and dust (including dust containing harmful substances) inside various pipes and large containers, etc. This invention relates to a towed dust collection vehicle that can be effectively used for cleaning the inner surfaces of gas eta-knit pipes, crude oil, industrial water, seawater transport pipes, etc. when repairing the inner surfaces.

The problems with the conventional cleaning process will be explained using gas pipe cleaning as an example.

The cleaning of gas pipes that have been buried underground for many years is carried out using the normal process.

First, dig out the gas pipe and disassemble it into appropriate lengths.

Conventionally, when cleaning the corroded inner wall of a pipe, specially equipped vehicles were placed at each open end.

This work usually proceeds in the order of removing rust from inside the pipe, collecting dust, and painting the inside of the pipe.In the dust collection process, a specially equipped vehicle equipped with a blower and a specially equipped vehicle equipped with a dust collector are used, and when the dust collector is operated, a large amount of dust is generated. It was raised.

This release of dust into the atmosphere was problematic because the rust powder in the gas pipes contained cyanide, which was toxic.

Utility Model Publication No. 54-21882 (mobile vacuum suction recovery machine) and Special Publication No. 54-22027 (mobile suction treatment device)
This invention proposes an apparatus in which all or part of the apparatus necessary for suction and recovery is mounted on the loading platform of a truck or the like.

The invention or device described above is extremely superior in that it enables mobile suction collection.

The former uses a configuration in which waste is first collected in a storage tank, then what cannot be collected is separated in a cyclone separator, and then in a wet collection tank.

In the latter case, the waste is first collected in a storage tank, and what cannot be collected is collected in a preliminary storage tank, a wet dust collection layer, and a miscatch/water tank.

When there are many collection points, it is necessary to take out the collected items from each collection point after the work is completed, which may complicate the collection work.

Particularly in the case of industrial waste, it is often impossible to dispose of the liquid as it is, which may further complicate the work.

An object of the present invention is to provide an in-pipe dust collection vehicle that can solve the above-mentioned problems.

In order to achieve the above object, the in-pipe dust collection vehicle according to the present invention includes an engine for power supply mounted on the towed vehicle body,
It is mounted on the vehicle body and has a bottom that can be opened and closed, and has a first space with an air inlet containing dust, and a second space above the first space.
The first space accommodates a plurality of filter cartridges for separating dust, and the second space is connected to a venturi section that connects to each of the filter cartridges. a dust collector in which a high-pressure air blowing port corresponds to a venturi part; a blower that connects negative pressure to the first space driven by the output of the engine via an intervening device; and a blower for noise cancellation. a near compressor for supplying high-pressure air by being driven by the engine output directly or through an intervening device; and a near compressor for supplying high-pressure air to the high-pressure air blowing port at regular intervals. It consists of a control unit that controls the power supply, a dust collector, a noise reduction unit, and a soundproof wall that seals the near compressor. and collect the dust adhering to the filter cartridge while dropping it by jetting high-pressure air,
The dust collector is configured to be collected from the bottom of the dust collector after the work is completed.

According to the configuration, dust is collected only by the dust collector,
Since the dust can be collected from the bottom of the dust collector, all of the above-mentioned problems can be solved.

In addition, since the noise source is sealed off with a soundproof wall, dust collection can be performed even in residential areas.

Hereinafter, the present invention will be explained in more detail with reference to the drawings and the like.

FIG. 1 shows a first embodiment of an in-pipe dust collection vehicle according to the present invention, and is a diagram showing an example of the arrangement of each device.

In the present invention, each device for dust collection is a dust-containing air inlet 3, a suction air outlet 4, an engine exhaust gas outlet 5, and a dust collector 7.
The hopper is built into the towed vehicle and is surrounded by a soundproof wall, except for the protruding dust box connection port 6.

In the figure, 16 is a power supply engine, 13 is a generator coupled to the output of the engine 16, 12 is a blower motor rotated by the output of the generator, and 14 is the generator 1.
An instrument panel that distributes the electricity generated at 3 to a motor 12 and a near compressor motor 19 (see Figure 2); 11 is a transmission mechanism; 9 is a blower connected to the transmission mechanism; 4 is an outlet for blower discharge air; , 10 is a sound muffling unit for eliminating the noise of the blower 9, and 7 is a dust collector that captures and collects dust from the dust-containing air sucked from the suction port 3.

A cooling fan 18, a radiator 17, and a muffler 15 installed in an exhaust gas pipe 34, which are necessary for engine operation, are arranged around the engine 16.

FIG. 2 is a diagram showing the configuration of the first embodiment.

A generator 13 is driven by the output shaft of the engine 16, and the electricity generated by the generator is led to an instrument panel 14.

The electricity generated by this generator is also supplied to a battery (not shown).

In the instrument panel 14, electricity is distributed to the blower motor 12 and the near compressor motor 19, respectively.

By operating a switch on the instrument panel 14, it is possible to switch between driving both motors, stopping them, and driving only one motor.

A blower motor 12 is rotated by power supplied from a generator 13, and rotates the blower 9 via a transmission mechanism composed of a pulley and a belt.

As the blower 9 rotates, air is sucked out from the dust collector 7 through the suction duct 26, passes through the silencing unit 10, and is discharged from the discharge port 4.

In the dust collector 7, the internal pressure becomes negative due to the air discharge, and dust-containing air is sucked in from the suction port 3, and the dust is captured by the plurality of filter cartridges 8.

On the other hand, the motor 19 drives the near compressor 20 to fill the air tank 24 with compressed air.

The pressure of the compressed air to be filled is adjusted in advance to an appropriate value by a governor 23.

The compressed air filled in the air tank 24 is sequentially blown out from above the plurality of filter cartridges at regular intervals under the control of the control unit 25, and the dust adhering to the filter surface is shaken off.

The control unit 25 that controls the compressed air jet is connected to the engine battery (DC24V), (output AC200V of the generator driven by this engine, or external power source AC1).
00V), and the compressed air supply interval (
A device is used in which the period) and ejection time can be set arbitrarily.

The compressed air is ejected by a solenoid valve in the dust collector 7, which is opened and closed by pulse current from the control unit 25.

In this way, fine particle dust is collected below the dust collector 7 along with relatively large particle dust that has accumulated without adhering to the upper surface of the filter.

The dust accumulated at the bottom of the dust collector is later thrown into a dust collection box (not shown) and processed.

For the convenience of explaining the operation, the blower 9 driving and air charging were explained as if they were performed in parallel, but the procedure is to charge the air in advance so that it can be constantly blown out by the control unit 25, and then turn on the blower 9. is actually taken.

Figures 3a and l) are for explaining the detailed configuration of the dust collector 7 that can be operated continuously for a long time without reducing the air flow rate, and Figure 3a is a partially cutaway perspective view of the dust collector. FIG. 3 is a cross-sectional view of the filter cartridge.

In FIG. 3a, 29 is an inspection door for internal inspection and replacing the filter cartridge 8, 28 is an air valve,
27 is a venturi attached to each filter cartridge, 3 is a dust-containing air inlet, and 6 is a dust collection box connection port of the hopper.

As shown in the figure, the dust collector 7 accommodates a large number of filter cartridges 8, and is composed of a clean air chamber 7a above the filter, and a dust collection chamber 7b containing a built-in filter and consisting of a hopper or the like.

In the clean air chamber 7a, that is, in the upper part of each filter, a venturi 27 is provided for each filter, and a blowing pipe 34 for blowing out compressed air is arranged above the venturi 27.

The above-mentioned control unit 25 is connected from the spray pipe 34.
Compressed air from the air tank 24 is spouted out.

When air is sucked by the blower 9 through the suction duct 26, the clean air chamber 1a becomes negative pressure, and the dust collection chamber 1b also becomes negative pressure through each filter, removing rust powder from the gas pipe from the dust-containing air population 3. As mentioned above, fine powder is captured on the filter surface and shaken off by compressed air.

The outlet 6 of the hopper, where dust accumulates, is closed and opened for disposal.

As shown in FIG. 3, the filter 8 has a structure in which foldable elements 8a are housed in a small volume, making efficient use of space and allowing quick installation and removal.

22b in the figure is a cover flat.

Since the dust collecting device 7 has the above-described structure and repeatedly shakes off dust attached to the filter surface, there is no reduction in air flow rate due to filter clogging, and good dust collection can always be performed.

In addition, since it can collect even fine particles of dust, rust powder containing toxic cyanide will not be released into the atmosphere.

FIG. 4 is a diagram showing a second embodiment of the present invention.

In this embodiment, a transmission 30 is connected to the engine 16, and a blower 9 is connected to the transmission 30 via a transmission mechanism 22.

For this reason, in the first embodiment, the rotation speed of the blower 9 is changed by controlling the rotation speed of the motor 12 by operating the instrument panel.
In this embodiment, a determined rotational speed of the blower 9 can be obtained by switching the gears of the transmission 30.

Further, a near compressor 20 directly connected to the engine 16 is used as the near compressor.

Therefore, unlike the first embodiment, this embodiment does not require a motor.

As with the previous example, the control unit 25 is one that operates on 24 V DC from the engine battery (200 V AC output from the generator driven by this engine or 100 V AC from an external power source), but in the former case, the generator and battery must be installed. No.

FIG. 5 is a diagram showing a third embodiment of the present invention, in which only the engine portion is shown.

This embodiment has the same structure as the second embodiment except for the parts not shown, but differs from the second embodiment in that the engine output is taken out by a transmission power take-off device (PTO) 32 and coupled to the blower.

Power can be transmitted to the blower by turning on and off the clutch 33, and in this case, the rotational speed of the blower is controlled by the rotational speed of the engine itself.

The third embodiment has been described above, but to summarize, the blower, near compressor, and control unit are driven in the following manner.

(Suction blower) (a) By a generator-driven motor directly connected to the engine (b) Directly connected to the engine's transmission (c) Transmission PTO (near compressor) (a) With engine (b) By a motor powered by an external power source or battery (Control unit) (a) External power source AC 100V (b) Engine battery DC 24V If the above-mentioned methods are combined in addition to the combinations of the three embodiments, further variations can be made.

As explained above, the in-pipe dust collection vehicle according to the present invention has excellent dust collection ability for long-term operation, so that other vehicles can be omitted.

It also solves the conventional problem of scattering dust containing toxic cyanide.

[Brief Description of the Drawings] Fig. 1 shows a first embodiment of the in-pipe dust collection vehicle according to the present invention, and shows an example of the arrangement of each device, Fig. 2 shows the configuration of Fig. 1, Fig. 3a is a partially cutaway perspective view showing the structure of the dust collector, and Fig. 3 is a cross-sectional view showing the structure of the filter cartridge. Fig. 4 is a second embodiment of the in-pipe dust collection vehicle according to the present invention. FIG. 5 shows a third embodiment of the present invention, and is a partial view showing only the engine portion. 1...Towed vehicle, 2...Soundproof wall, 3.
...Dust-containing air intake, 4...Outlet, 5
...Engine exhaust gas port, 6...Hopper outlet...Dust collector, 8...Filter cartridge, 9...Blower, 10...
...Sound reduction unit, 11...Transmission mechanism, 12.
...Blower motor, 13... Generator,
14... Instrument panel, 15... Muffler, 1
6...Engine, 17...Radiator,
18... Cooling fan, 19... Near compressor motor, 20... Near compressor, 21, 22... Transmission mechanism, 23...
...Governor, 24...Air tank, 25...
...Control unit, 26...Air duct, 27...Venturi, 28...
Air valve, 29... Inspection door, 30...
・Transmission, 31...Plug, 32
...Flywheel power take-off device ((F/P, T
,0. )33...Clutch, 34...
spray pipe.

Claims (7)

[Scope of utility model registration request] (1) An engine for power supply mounted on the towed vehicle body, a first space mounted on the vehicle body whose bottom can be opened and closed and has an inlet for air containing dust, and a second space above the first space. A space is formed, the first space accommodates a plurality of filter cartridges for separating dust, and the second space is connected to a bench part connected to each of the filter cartridges. a dust collector in which each venturi portion is associated with a high-pressure air blowing port; a blower that connects negative pressure to the first space driven by the output of the engine via an intervening device; a silencing unit provided at the discharge port of the blower; a near compressor driven by the engine output directly or through an intervening device to supply high-pressure air; and a near compressor for supplying high-pressure air to the high-pressure air blowing port at regular intervals. It consists of a control unit that controls the power supply, a soundproof wall that seals the engine for power supply, a dust collector, a noise reduction unit, and a near compressor. The in-pipe dust collection vehicle is configured to collect dust while dropping the dust adhering to the filter cartridge by jetting high-pressure air, and collect the dust from the bottom of the dust collector after the work is completed. (2) The in-pipe dust collection vehicle according to item 1, wherein the intervening device for transmitting engine output to the blower comprises a generator coupled to the engine output and a motor rotated by the generator output. (3) The in-pipe dust collection vehicle according to item 1, wherein the intervening device that transmits engine output to the blower is a power extraction device that extracts power from the engine. (4) The in-pipe dust collection vehicle according to item 1, wherein the intervening device for transmitting the engine output to the blower is a transmission connected to the engine output. (5) The intervening device for transmitting the engine output to the air compressor is a first intervening device comprising a generator coupled to the engine output and a motor rotated by the generator output.
In-pipe dust collection vehicle described in Section 1. (6) The in-pipe dust collection vehicle according to item 1, wherein the control unit is driven by an engine battery. (7) The in-pipe dust collection vehicle according to item 1, wherein the control unit is driven by an external power source.