JP2581001Y2 - Dust removal device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing dust containing high-temperature gas and the like.

[0002]

2. Description of the Related Art A conventional dust removing apparatus is shown in FIGS. A plurality of hollow cylindrical dust-containing gas cleaning cylindrical filters 1 made of a gas-permeable porous solid are attached to the filter support 5 at substantially equal intervals in the entire area of the cylindrical body 2. A plurality of such cylindrical filters 1 are arranged in parallel in the machine body 2 in a vertical direction. A dust-containing gas inlet 10 is provided at the center of the upper end of the body 2, and a hopper 6 is formed at the lower part of the body 2.

[0003] Reference numeral 3 denotes a clean gas outlet duct provided substantially at the center in the vertical direction of each stage formed by the plurality of cylindrical filters 1 on the side of the body 2, and these ducts 3 communicate with each other. A backwash gas blowing nozzle 4 for blowing backwash gas toward the body 2 is provided in each duct 3.

In this dust remover, the dust-containing gas is introduced into the body 2 through an inlet 10 as shown by a solid arrow 9,
The clean gas that has entered the cylindrical filter 1 made of a gas-permeable porous solid and has passed through the cylindrical filter 1 from inside to outside flows in the direction of an arrow 7 indicated by a dashed line and flows out into the outlet duct 3.

On the other hand, a backwash air flow for regenerating the filter 1 is supplied from a backwash gas blowing nozzle 4 to an arrow 8 indicated by a dotted line.
, That is, the body 2 where the filter 1 is
, And flows in the direction of the body 2 against the clean gas flow that flows through the cylindrical filter 1 and flows down toward the outlet duct 3. As a result, the clean gas that has passed through the cylindrical filter 1 flows back into the cylindrical filter 1, and the dust adhering to the inner surface of the cylindrical filter 1 is separated and removed, thereby performing dust removal and regeneration of the cylindrical filter 1. The dust separated and removed from the inner surface of the cylindrical filter 1 is stored in a hopper 6 below the body 2 and is appropriately removed from the body 2.
It is discharged outside.

[0006]

In the conventional dust removing apparatus, dust is removed by using the backwash air flow as described above. In the arrangement, the influence on the dust removal performance is extremely strong.

In the conventional dust removing apparatus, as shown in FIG. 4, the cylindrical filters 1 are arranged at substantially equal intervals over the entire area inside the body 2. At the time of backwashing, the backwash gas is induced by the backwash gas blowing from the backwash gas injection nozzle 4 toward these filter groups. Starting from the side of the outlet duct 3 of the clean gas, the gas is gradually transmitted to the inside of the body 2.
On the other hand, when the dust attached and deposited on the inner surface of the cylindrical filter 1 is removed by the backwash gas flow, the fluid resistance is drastically reduced. It flows in and hinders introduction of backwash gas into the cylindrical filter 1 for dust removal at the rear. In the conventional dust removing device, the number of rows of the cylindrical filters 1 is large with respect to the flow of the backwash gas, and the backwash effect is weak in the cylindrical filter 1 at the rear position (the side opposite to the clean gas outlet duct installation surface). This causes a reduction in dust removal efficiency of the entire apparatus.

The present invention is to solve the above-mentioned drawbacks of the conventional dust removing device.

[0009]

SUMMARY OF THE INVENTION The present invention incorporates a plurality of hollow cylindrical filters for cleaning dust-containing gas, which are arranged in parallel to each other and are made of a gas-permeable porous solid. A cylindrical airframe that supplies gas to the inside of the cylindrical filter and removes the clean gas to the outside of the cylindrical filter; a clean gas outlet duct is provided on a side wall of the airframe; and the outlet duct is subjected to filter regeneration. A dust-removing device configured to be used also as an introduction duct for backwash airflow for use, and having a mechanism for generating a backwash airflow in the duct toward the body where the cylindrical filter is established. Out of a plurality of cylindrical filters placed in the body, to the exit duct of the aircraft
A cylindrical filter arranged from the connection of
The filter is characterized by forming an inflow channel of the backwash air flow into the airframe by removing the filter .

[0010]

According to the present invention is of the placed cylindrical filter to forest in several parallel in aircraft to aircraft exit duct
The backwash airflow flowing toward the body against the clean gas flow in the outlet duct by providing the inflow channel for the backwash airflow to the inside of the body by removing from the connection portion over the body center region is provided. , Reaching the fuselage while forming a backwash in the exit duct, and the momentum remains unchanged without the cylindrical filter installed in the fuselage.
There enters the inlet channel, an action to expand the backwash gas flow this inflow passage flows into the entire area within the fuselage. As a result, the same amount of backflow occurs simultaneously in the cylindrical filters in the entire body of the machine, dust is removed from the filters in the same manner in all the cylindrical filters, and the efficiency of the dust removing device is improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This embodiment is an improvement of the conventional dust removing apparatus shown in FIGS. 3 and 4 as described below. In FIGS. 1 and 2, the same parts are shown in FIGS.
The same reference numerals as in the above denote the same parts, and a description thereof will be omitted.

[0012] In this embodiment, a tubular filter 1 in each stage, is removed over the connection to the outlet duct 3 of the body 2 in the center area of the machine body 2. That is, as shown in FIG.
From the connection of the fuselage 2 to the exit duct 3 to the center area of the fuselage 2
Over the width or diameter of the outlet duct 3 and
On the opposite side of the outlet duct 3, a cylindrical filter 1 is formed in a substantially rectangular range extending to a semicircle drawn at the center of the fuselage 2 with a radius half the width or diameter of the outlet duct 3.
To form an inflow channel A for the backwash air flow.

Therefore, the backwash gas flow induced in the outlet duct 3 by the backwash gas blown from the backwash gas injection nozzle 4 enters the rectangular backwash gas flow inflow channel A,
The backwash air flow flows through this flow path and is spread over the entire area in the body 2. As a result, the same amount of backflow occurs simultaneously in the cylindrical filters 1 in the entire area in the body 2, and dust is removed in the same manner in all the cylindrical filters 1, and the efficiency of the dust removing device can be improved.

In this embodiment, it is preferable that the number of the cylindrical filters 1 between the inflow passage A and the inner wall of the body 5 is set to be almost equal in the entire circumference, but on the side facing the outlet duct 3, The number of cylindrical filters 1 can be increased in consideration of the inertial force at the time of the inflow of the backwash air flow.

[0015]

[Effects of the Invention] As described in the claims of the present invention, the present invention removes a part of the cylindrical filter in the body of the dust collecting and removing apparatus to provide an inflow channel for the backwash air flow. As a result, the backwash airflow flowing toward the inside of the machine against the clean gas flow in the outlet duct enters the inflow passage in the body, and the inflow passage spreads the backwash airflow that flows into the entire machine. Therefore, the same degree of backwash air flow is simultaneously generated in the cylindrical filters in the entire area inside the machine, and dust is removed from the cylindrical filters in the same manner and effectively in all the filters, so that the efficiency of the dust removing device can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a dust removing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a longitudinal sectional view of a conventional dust removing device.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter 2 Body 3 Clean gas outlet duct 4 Backwash gas injection nozzle 5 Filter support plate 6 Hopper 7 Clean gas flow 8 Backwash gas flow 9 Dust-containing gas flow 10 Dust-containing gas inlet A Backwash air flow Inflow channel of

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of hollow cylindrical cylindrical filters for cleaning dust-containing gas, which are arranged in parallel to form a forest and are made of a gas-permeable porous solid, and the dust-containing gas is provided inside the cylindrical filter. Equipped with a tubular body that supplies and removes clean gas to the outside of the tubular filter, an outlet duct for clean gas is provided on the side wall of the body, and the outlet duct is used as a duct for introducing a backwash air flow for filter regeneration. Also configured to use
In a dust removing device having a mechanism for generating a backwash airflow in the duct toward a body in which the cylindrical filters stand, a plurality of cylindrical filters arranged in the body are provided.
A dust filter characterized in that a cylindrical filter arranged over a central region of the fuselage is removed from a connection portion of the fuselage to an outlet duct to form an inflow channel of a backwash air flow into the fuselage. apparatus.