JPH08257439A - Cyclone dust collector - Google Patents

Abstract

PURPOSE: To smoothly remove the clogging of a screen. CONSTITUTION: An inner cylinder 12 is concentrically installed in an outer cylinder 11, and a gas to be treated is sent into the outer cylinder 11 as a turning flow to separate and sediment large rubbish in the gas and the gas from which the rubbish has been separated is discharged from the inner cylinder 12. In a gas inflow port 12a at the lower end of the inner cylinder 12, a wire mesh screen 14 and a stainless steel-made comb-shaped screen 15 are installed. The screen 15 is made oscillatable downward by an air cylinder 19. When the screen 15 is clogged with vinyl chips or the like, this device A is stopped and the screen 15 is oscillated to remove a sheet-shaped material by natural falling. When the comb-shaped screen 15 is made of stainless steel, static electricity is not accumulated and there is no sticking of the sheet-shaped material due to the static electricity, and when a pipe-shaped one is used, much entanglement is not encountered because of its curved plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone dust collecting device provided in a waste treatment facility or the like.

[0002]

2. Description of the Related Art In a cyclone dust collector of this type, as shown in FIG. 5, an inner cylinder 2 is concentrically provided in an outer cylinder 1, and a gas to be treated a is sent into the outer cylinder 1 as a swirling flow. Then, the large dust in the gas a is separated and settled, and the box 3
To collect. On the other hand, the separated gas b is discharged from the inner cylinder 2, passed through the bag filter, and then discharged to the outside air (see the embodiment).

In this apparatus, if a large amount of dust is mixed in the gas b, the bag filter for post-processing may be clogged. Therefore, conventionally, the inner cylinder 2
A wire mesh (screen) is provided at the inflow port 2a of the gas b, and a large dust is trapped by the wire mesh (see Examples).

[0004]

In the cyclone dust collecting apparatus provided with the wire net, when sheet-like materials such as vinyl and paper are captured and accumulated in the wire net, the passage of the gas b (inlet 2a) is closed. The dust will be removed and the dust collection efficiency will be significantly reduced.
For this reason, in such a case, the apparatus is stopped, and a stick or the like is thrust from the inspection port 4 to remove the sheet-like material.

However, the removal from the inspection port 4 involves removal of the lid of the inspection port 4, installation work (opening / closing work), a large amount of work, and a long stoppage time. A long downtime is not preferable in terms of work efficiency.
In addition, manual removal should be avoided from the viewpoint of hygiene.

Under the above circumstances, it is an object of the present invention to smoothly remove the sheet-like material captured on the screen without opening and closing the inspection port.

[0007]

In order to solve the above-mentioned problems, according to the present invention, in the cyclone dust collecting apparatus with a screen described above, the screen can be swung downward, and The swing means is additionally provided (Claim 1). The screen is preferably made of a material that does not accumulate static electricity (claim 3).

In this structure, the screen may be composed of a porous screen and a comb-shaped screen, and the comb-shaped screen is on the outer side and can swing downward (claim 2).

In each of the above constructions, an air cylinder is provided above the inner cylinder, and the screen is connected to the air cylinder via a connecting rod passing through the inner cylinder. The air cylinder swings the screen. It can be made to move (Claim 4).

[0010]

According to the present invention thus constructed, when a sheet-like material is trapped on the screen and clogged (if clogged), the apparatus is stopped, and the screen is swung downward to move the sheet-like material. Remove the object by dropping it by its own weight. When the removal is complete, the screen is restored and the device is started to resume normal operation.

At this time, if the screen is made of a porous material and a comb-shaped material, large dust is surely captured by the porous screen, and the sheet-shaped material is captured by the comb-shaped screen. Since there is little entanglement, the free fall can be smoothly performed. Further, if the screen is made of a material that does not accumulate static electricity, the static electricity will not cause the sheet-like material to adhere and the fall will be smoother.

Furthermore, if the screen is swung by the air cylinder, no human hands touch the dust,
You can eliminate the clogging of the screen. At this time, since the connecting rod that connects the air cylinder and the screen passes through the inner cylinder, it does not affect the dust collecting action. Incidentally, if the rod passes through the outer cylinder, it has some influence on the swirling flow, and the dust collecting action is considerably reduced.

[0013]

As shown in FIG. 1, in this embodiment, as in the conventional case, the inner cylinder 12 is concentrically provided in the outer cylinder 11 and the gas b to be treated is sent into the outer cylinder 11 as a swirl flow. The dust is collected in the box, and the collected dust settles down in Box 1.
It is stored in 3.

At the lower end (inlet) 12a of the inner cylinder 12, a wire mesh screen 14 and a stainless comb-shaped (fork-shaped) screen 15 are provided. As shown in FIG. 2, the wire mesh screen 14 is screwed to the lower end of the inner cylinder 12, while the comb-shaped screen 15 has one end hinged to the hinge 1.
It is supported by the inner cylinder 12 by 6. For this reason, the comb-shaped screen 15 is formed by the hinges 16 of the comb-shaped screen 15 as shown in FIGS.
It can swing downward like a chain line.

Further, a connecting rod 18 extending upward is connected to one end of the comb-shaped screen 14 via an L-shaped link 17 passing through the wire mesh screen 14. The upper end of the rod 18 is connected to the air cylinder 19 above the inner cylinder 12, and the expansion and contraction of the air cylinder 19 causes the comb-shaped screen 15 to swing vertically.

Therefore, while the apparatus is being driven, sheet-like materials such as vinyl scraps and paper scraps are generated on the screens 14 and 15.
When the inlet 12a is blocked by the device, the device A is stopped, and the air cylinder 19 causes the comb-shaped screen 15 to swing downward as shown by a chain line, and the sheet-shaped material is dropped and removed. . At this time, if the comb-shaped screen 15 is a curved surface such as a pipe, the sheet-shaped material is also less likely to be entangled and easily falls. When the removal is completed, the comb-shaped screen 15 is returned as shown by the solid line, and the normal operation is started.

The swing of the comb-shaped screen 15 may be performed by projecting the connecting rod 18 to the outside and manually pulling the projecting end. Further, the wire mesh screen 14 may also be rocked together, and further, the comb-shaped screen 15 is removed and the wire mesh screen 14 is removed.
Only one may be swingable. Also, wire mesh screen 1
Instead of 4, a well-known porous screen such as a punching metal plate or the like comb screen orthogonal to the comb screen 15 can be used. At this time, the both comb-shaped screens form a lattice-shaped screen, and the both comb-shaped screens may be integrated.

3 and 4 show examples of dust collecting equipment using this cyclone dust collecting apparatus A. FIG. 3 shows a bypass circuit 20. FIG. 4 shows this apparatus A. They are arranged side by side.

In the equipment shown in FIG. 3, the open / close damper 20a is opened and the open / close damper 20b is closed. Bounces, collects dust, and then releases to the atmosphere. In this state, if the screens 14 and 15 are clogged, the damper 20a is closed, the damper 20b is opened, and the gas b to be treated is directly sent to the bag filter 22 by the bypass circuit 20 to continue the dust collecting action. To do. While the device A is stopped, due to the above-mentioned action,
When the clogging of the screens 14 and 15 is removed and the removal is completed, the damper 20a is opened and the damper 20b is closed to restore the normal dust collecting action. The clogging of the screens 14 and 15 is detected by the differential pressure gauge 21, and the effect after elimination of the clogging is also detected by the differential pressure gauge 21 in the same manner.

In the equipment of FIG. 4, if the differential pressure gauge 21 detects clogging of the screens 14 and 15 of the apparatus A,
The dampers 24a and 24b are selectively closed to remove the clogging by the above-mentioned action, and when the removal is completed, the damper 20a or 20b is opened to return to the normal dust collecting action. When the two devices A are provided, only one device is driven, and when the screens 14 and 15 of the driving device A are clogged, the other device is driven.
May be selectively driven.

[0021]

The present invention is constructed as described above, and the screen is oscillated to eliminate the clogging due to the trapping of the sheet-like material. Therefore, the clogging can be prevented without opening and closing the inspection port. Can be eliminated and the work can be carried out smoothly. Further, the degree of contact between a person and dust is reduced as much as possible, and the working environment is improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an embodiment.

FIG. 2 shows a screen portion of the same embodiment, a is a bottom view,
b is an enlarged cutaway front view of the main part

FIG. 3 is an explanatory view of one use of the same embodiment.

FIG. 4 is an explanatory view of another use of the same embodiment.

FIG. 5 is a perspective view of a conventional example.

[Explanation of symbols]

 1, 11 Outer cylinder 2, 12 Inner cylinder 2a, 12a Gas inlet 3, 13 Garbage storage box 4 Inspection port 14 Wire mesh screen 15 Comb screen 16 Hinge 17 L-shaped link 18 Connecting rod 19 Air cylinder 20 Bypass circuit 20a, 20b Opening / closing damper 21 Differential pressure gauge 22 Bag filter 23 Blower

Claims (4)

[Claims] 1. An inner cylinder 12 is concentrically provided in an outer cylinder 11,
In the cyclone dust collecting apparatus, the gas a to be treated is sent into the outer cylinder 11 as a swirling flow to separate and settle large dust particles in the gas a, and the separated gas b is discharged from the inner cylinder 12. And a screen is provided at the gas inlet 12a at the lower end of the inner cylinder 12 so that the screen can be swung downward, and
A cyclone dust collecting apparatus characterized in that swing means 19 for the screen is attached. 2. The screen is a porous screen 1.
4. The cyclone dust collecting apparatus according to claim 1, wherein the cyclone dust collecting apparatus is composed of 4 and a comb-shaped screen 15, and the comb-shaped screen 15 is on the outside and can swing downward. 3. The cyclone dust collecting apparatus according to claim 1, wherein the screen is made of a material that does not accumulate static electricity. 4. An air cylinder 19 is provided above the inner cylinder 12.
The screen is connected to the air cylinder 19 via a connecting rod 18 passing through the inner cylinder 12, and the screen is oscillated by the air cylinder 19. The cyclone dust collector according to any one of 3 above.