JPH06278865A - Separator of pneumatic conveying facility - Google Patents

Abstract

PURPOSE:To provide a separator which can exert better counter-wash effect than conventional even though the amount of compressed air used is the same. CONSTITUTION:When a compressed air 8 is supplied to a counter-wash nozzle 7, a counter-wash nozzle 7 of ejector structure sucks the ambient air C with jetting of a high pressure air, and the compressed air 8 supplied to the nozzle and the air C sucked are blown into a filter 2 as the counter-washing air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separator for an air transportation facility used for transportation of powder and granules.

[0002]

2. Description of the Related Art Pneumatic transportation equipment is constructed so that an air flow accompanied by a transported material is passed through a transportation pipe and blown into a separator at a destination to separate the transported material from the air and collect the air.
The conventional separator is constructed as shown in FIG. A bag filter 2 is built in the separator body 1. The air flow 3 accompanied by the carried product is blown into the separator body 1 through the inlet 4, and the carried product 5 is separated from the slowed air flow and drops to the bottom of the separator body 1. The air flow is further separated by the bag filter 2 into finer cargo, and only the cleaned air flow is discharged from the air outlet 6 to the atmosphere as shown by an arrow A.

A backwash nozzle 7 is provided on the secondary side B of the bag filter 2, and compressed air 8 is periodically blown from the backwash nozzle 7 into the bag filter 2 as shown in FIG. It is configured to drop the transported material attached to the primary side of the filter 2.

[0004]

By backwashing the bag filter 2 in this manner, stable operation can be expected for a long period of time, but it is desired to further improve the backwash efficiency. The current situation.

An object of the present invention is to provide a separator capable of expecting a better backwashing effect than before even with the same amount of compressed air.

[0006]

The separator of the present invention separates air from a conveyed product and at the same time discharges air through a filter. When backwashing, the backwash nozzle backwashes the secondary side of the filter. In the separator for injecting air, the tip of the backwash nozzle has an ejector structure.

[0007]

According to this configuration, when compressed air is supplied to the backwash nozzle, the backwash nozzle having the ejector structure sucks in the surrounding air by the injection of high-pressure air and mixes with the compressed air supplied to the backwash nozzle. The sucked air is blown into the filter as backwash air.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The separator of the present invention will be described below with reference to FIG. It should be noted that components having the same functions as those in the conventional example shown in FIGS.

The separator of the present invention is constructed as shown in FIG. The compressed air 8 jetted from the backwash nozzle 7 is jetted to the bag filter 2 through the internal passage 10 of the suction port member 9. When the compressed air 8 passes through the internal passage 10 of the suction port member 9, the ejector effect is generated and the arrow C
As shown in (1), the surrounding air is sucked from the inlet side of the suction port member 9 and is jetted to the bag filter 2 together with the compressed air 8 and used for backwashing.

As described above, more air than the compressed air 8 supplied to the backwash nozzle 7 can be jetted to the bag filter 2, and improvement in backwash efficiency can be expected.

[0011]

As described above, according to the present invention, since the tip portion of the backwash nozzle has the ejector structure, more air than the compressed air supplied to the backwash nozzle can be jetted to the filter for backwashing. Therefore, the backwash efficiency can be expected to improve.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view around a backwash nozzle of a separator according to the present invention.

FIG. 2 is a vertical sectional view of a general separator.

FIG. 3 is a vertical sectional view around a backwash nozzle of a conventional separator.

[Explanation of symbols]

 1 Separator body 2 Bag filter [filter] 7 Backwash nozzle 8 Compressed air 9 Suction port member 10 Internal passage

Front page continuation (72) Inventor Kazumi Yamaguchi 1-9-2 Shinkawa, Chuo-ku, Tokyo Kubota Colortronic Co., Ltd.

Claims (1)

[Claims] 1. A separator for separating air from a conveyed product, discharging the air through a filter, and injecting the backwashing air from the backwashing nozzle to the secondary side of the filter during backwashing. Separator in air transportation equipment with ejector structure at the tip of the.