JPS58207922A - Vacuum type dust collecting apparatus - Google Patents

Abstract

PURPOSE:To certainly collect dust, by a method wherein a water curtain is generated by kinetic energy possessed by sucked air and sucked air is passed through the water curtain. CONSTITUTION:A water scrubber 8 is constituted from a tank main body 25, an inlet 26 guiding sucked air into the main body by a cyclone 9, a water curtain generating apparatus 27 provided so as to be confronted to the lower end of the inlet 26 and an outlet 28 communicated with a Roots blower 3. The apparatus 27 is constructed to form a trap plate 29 consisting of an inclined part 29a having an inverted conical shape and a part 29b with an almost circular cross section connected thereto and protruded from the water level poured into the tank main body 25; and a definite gap is formed betweeen the lower end of the inclined part 29a and the bottom wall of the tank main body 25. The water level in the space encircled by the trap plate 29 is raised along the part 29b to generate a water curtain.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum type dust collector, and more particularly to a vacuum type dust collector attached to a suction wheel for vacuum suctioning sludge and the like.

Traditionally, Roots blowers have been used as vacuum generators, and in order to remove dust from the vacuum-suctioned air,
A device in which a water scrubber is provided upstream of a roots blower is known (for example, Japanese Patent Publication No. 54-22027).

In this conventional technology, the end of the inlet pipe to the water scrubber is submerged in water, and the suction air and water are replaced to collect dust, so it is impossible to reliably collect the dust in the bubbles. I couldn't do it.

In addition, as a result of replacing the suction air with all water, the suction air contains droplets, and as a result, the roots blower suctions the water in which dust has dissolved, resulting in poor durability and the presence of toxic substances in the suction air. This has the disadvantage that it is released directly into the atmosphere.

The present invention has been made in view of the above points, and its purpose is to generate a water curtain using the kinetic energy of suction air, and to reliably collect dust by passing the suction air through the water curtain. It is something to do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to embodiments with reference to the drawings.

In FIG. 1, 1 is a sludge suction vehicle, a roots blower 6 (vacuum generator) is fixedly installed at the front of a vehicle frame 2, and a storage tank 4 is installed at the rear so that it can be raised or lowered. On the suction side t of the Roots blower 6, a 10th tally valve 6, a vacuum breaker 7, a first water scrubber 8, a cyclone 9, and a dump joint 10 are installed in the communication part 5 of the storage tank 4 in order from the front side. They are connected via a suction tube 11. On the other hand, the discharge side of the Roots blower 6 is
It is opened to the outside via the second water scrubber 12 and the 20th tally valve 13. 1st and 2nd
The 0-tali valves 6.16 are interlocked, and switching between sludge suction operation and sludge discharge operation is performed by an operation handle (not shown).

At the bottom of the storage tank 4, the discharge side of the Roots blower 6 (specifically, the second water...) is appropriately arranged via the pressurizing pipe 14.
... instead of connecting to the discharge side of Roots blower O,
Similar effects can be obtained by connecting to a separately provided compressor 16 (pressure gust generating device) via a connecting pipe 17.

Further, 18 is the PTO mechanism of the Roots blower 6, 19 is the drive shaft 7), 20 is a V-belt, 21 is a sludge suction hose, 22 is a baffle plate installed opposite the outlet of the suction hose 21, and 23 is sludge pressurization. The discharge port 24 at the time of discharge is a hose reel.

To explain the operation of the suction wheel 1, firstly, &5.
is raised to a predetermined inclined state (the lowest position is near the discharge port 26). At this time, as the damper and India 10 are separated, an on-off valve (not shown) provided in the suction pipe 11 is operated to close the end of the storage tank 4.

Thus, by operation of the operating handle, the first and twentieth-
Turn the tally valve 6.16 clockwise 90 degrees from the state shown in Figure 1.
Rotate the suction side of the Roots blower 6 to the atmosphere port 26,
By connecting the discharge side to the nozzle assemblies 17, 17.17, when the Roots blower 6 (or compressor 16) is operated, compressed air is supplied into the storage tank 4 through the pressurizing pipe 14 and stored by the nozzle assembly 17, 17.17. tank 4
The sludge inside is almost completely discharged through the discharge 023.

In addition, when the storage tank 4 is laid down and placed in a horizontal state, the dump joint 10 is connected and the on-off valve (not shown) is opened, allowing suction of gamma mud and the like through the suction pipe 11. 7iru 5 snapper, rotary valve 6.
16 to the position shown in FIG. 1 to operate the Roots blower 6, the pressure inside the storage tank 4 is reduced, and sludge and the like are sucked through the suction hose 21. At this time, most of the dust in the suction air is collected by the cyclone 9, and then the remaining dust is collected by the first water scrubber 8, and the suction air is purified. The suction air that has passed through the Roots blower 6 is then passed through the second water scrubber 12.
It is then released into the atmosphere.

By the way, examples of water scrubbers 8 and 12 are as follows.
For convenience, the first water scrubber 8 will be explained with reference to FIGS. 2 and 3.

FIG. 2 shows a first embodiment of the water scrubber, in which the water scrubber 8 has a tank main body 25
and an inlet 2 for introducing suction air from the cyclone 9 into the main body.
6, a water curtain generating device 27 provided behind the lower end of the inlet 26, and an outlet 28 to the Roots blower filter. The water curtain generating device 27 includes an inclined part 29& disposed in an inverted U-shape, and a substantially circular cross-sectional part connected to the inclined part 29a and protruding below the surface of the water poured into the tank 25. 29'b, and a certain gap is formed between the lower end of the inclined portion 29a and the bottom wall of the tank body 25.

In FIG. 2, the trap plates 29 are disposed opposite to each other in the right direction, but they are also disposed in the front-rear direction (perpendicular to the plane of the drawing).

Therefore, when the roots blower 6 is operated, the roots 28
The water surface in the space surrounded by the trap plate 29 is pushed down by the interlocking energy such as the pressure energy generated between the cyclone 9 and the inlet 26 and the velocity energy of the air sucked by the cyclone 9, and at the same time, the water surface in the space surrounded by the trap plate 29 is pushed down, and at the same time It is lifted along the line, creating a water curtain.

A second embodiment is shown in FIG. 6, and in this second embodiment, a baffle plate 60 is erected so that a part of the water injected into the tank Fukyu 25 is submerged under the surface of the water injected into the tank Fukyu 25. At the same time, there is a horizontal portion 29c disposed with a certain gap from the powerful board 60, and this horizontal portion 29c.
A water curtain generating device 27 is formed by the baffle plate 60 and the trap plate 29.

In addition, in the second embodiment, a baffle plate 60' is provided facing the inlet 26, and a plurality of drain plates 61 are provided to remove moisture from the suction air that has passed through the water curtain generator 27. There is.

Therefore, when the Roots blower 6 is operated, the air sucked into the tank body 25 from the inlet 26 first raises the water surface along the baffle plate 60' due to its kinetic energy and comes into contact with the water, and then moves along the baffle plate 60'. Press down. The water surface pushed down by the suction air becomes a cross section of the trap plate 29. Therefore, residual dust is reliably collected by this water curtain.

9. In these embodiments, the first water scrubber is shown as being provided, but it may be provided in the second water scrubber.

As described above, the present invention uses the water scrubber G to generate a water curtain using the kinetic energy of the flashed air, and the suction air passes through this water curtain to reliably compensate for residual dust in the suction air. can be collected.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is an overall configuration diagram of a suction wheel, FIG. 2 is a sectional view of a first embodiment of a water scrubber, and FIG. 6 is a second embodiment thereof. FIG. 1...Sludge suction vehicle, 6...Roots blower, 4...
-0・Storage tank, 8.12・・・・Water scrubber, 11・・Suction pipe, 15・・Pressure pipe, 16
...Compressor, 27...Water curtain generator, 29...Trap plate-1α

Claims (4)

[Claims] (1) Water scrubber movement of suction air that occurs between the inlet and outlet of the water scrubber in a vacuum dust collector in which the outlet of the water scrubber is connected to the Roots blower side, and the inlet thereof is connected to the storage tank side. A vacuum dust collector equipped with an internal water curtain generator that generates electricity using energy. (2) The vacuum dust collector according to claim 1, wherein the water curtain generating device is constituted by a trap plate having a substantially circular cross section facing the entrance to the water scrubber. (3) The water curtain generating device is constituted by a baffle plate provided facing the outlet of the water scrubber, and a trap plate having a substantially circular cross section provided close to the baffle plate. A vacuum dust collector according to scope 1. rot 2 (4) The vacuum dust collector according to claim 1, wherein a drain plate is disposed facing the outlet of the m water cooler bars.