JP2000140536A - Multistage cage of filter cloth cylinder for filter type dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the attaching and detaching work even of a long filter cloth cylinder having a large filtering surface area and to house a filter type dust collector body in a building small in plottage. SOLUTION: A long filter cloth cylinder 1 having a large filtering area can be anchored even within a building having a low ceiling and narrow plottage by dividing a long cage for the filter cloth cylinder into a plurality of sections shortly so as to connect these sections in a freely detachable manner by joints to facilitate the handling of the cage. The lowering of dust collection efficiency caused by elongating the filter cloth cylinder 1 is compensated by providing an extension jet pipe 11 of a pulse jet to an upper stage cage 9 and providing partition plates 13 to cages of respective stages to ensure the dust removing effect of the pulse jet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention divides a cage to be inserted into a filter cloth tube for a filter type dust collector into upper and lower parts, and makes it easy to attach and detach a long cage even in a building with a low ceiling. In order to reduce the basic area of the dust collector, use a long filter cloth tube with a large filtration area, and install a partition between the extended jet pipe of the pulse jet and the joint of each stage cage in the upper cage to reduce the pulse jet effect. It is about the method of prevention.

[0002]

2. Description of the Related Art Conventionally, in order to reduce the basic area of a conventional filter-type dust collector of a pulse jet type, even if a filter cloth tube is elongated and a filtration area is increased, a cage to be inserted into the inside becomes long, and the cage is originally thin. Since it is made of a steel bar in the shape of a soft and slender basket, it easily bends and twists when inserted,
If it is not inserted perpendicularly to the support plate, it will damage the filter cloth and cause leakage, so it is difficult to handle and requires skill,
When inserting the cage, a work space with the same height as the length of the cage is required at the top of the filter cloth tube, so the ceiling height of the building is also restricted. In the prior art, there was a limit to the length of the filter cloth tube because the pulse jet for cleaning off did not sufficiently reach the lower surface of the filter cloth tube.

[0003]

SUMMARY OF THE INVENTION In order to reduce the installation area and the building of a filtration type dust collector, the present invention uses a long filter cloth tube having a large surface area, and furthermore, uses a long filter cloth cylinder. An object of the present invention is to make it possible to install a filtration type dust collector even in a building having a low ceiling by preventing a decrease in dust removal effect and facilitating a work of attaching and detaching a long cage.

[0004]

[Means for Solving the Problem] For this purpose, a cage to be inserted into the filter cloth tube is divided into a plurality of upper and lower parts, and a joint is provided. An extension jet pipe of a pulse jet is provided in an upper cage of the filter cloth tube. A partition was provided at the joint of the lower cage.

[0005]

The present invention simplifies the work of attaching and detaching the long cage of a long filter cloth cylinder having a large filtration area by dividing the cage inserted into the filter cloth cylinder of the filtration type dust collector into upper and lower parts. To lower the ceiling of the building, and to remove dust adsorbed by providing an extended jet pipe for jet pulses and a partition at the seam between the upper and lower cages in each upper cage of the filter cloth tube. Since the pulse jet sufficiently reaches the surface of the lower filter cloth cylinder, the installation area and the building of the filter type dust collector are reduced.

[0006]

FIG. 1 is a vertical longitudinal sectional view of one example of the prior art shown for comparison with the present invention, in which a filter cloth of a filter type dust collector is sewn in a tubular shape. The tube (1) is suspended in a dust chamber (4) by a support plate (3) into which a cage (2) assembled by several thin steel bars is inserted.
When the dust-containing fluid (5) passes through the filter cloth tube (1) in the direction of the arrow, the dust adheres to the surface and becomes a clean gas, which is sent to the clean chamber (6) above the support plate (3). If dust accumulates on the surface of the filter cloth to some extent and accumulates, compressed air is injected into the inside of the filter cloth cylinder (1) from a pulse jet injection pipe (not shown) at the upper part of the filter cloth cylinder (1) to thereby filter the filter cloth cylinder (1). The dust adhering to the surface of 1) is blown off by a pulse jet. In addition, filter cloth tube (1)
Is closed at its lower end with a bottom lid (7), and the cage (2) is assembled with several reinforcing rings (8). FIG. 2 shows an embodiment according to claim 1, wherein the cage (2) in FIG. 1 is formed by a plurality of upper and lower cages (9) having a male screw joint and a lower cage (10) having a female screw joint. Divided into
The number of threaded joints can be increased or decreased according to the length of the filter cloth (1) and the height of the ceiling of the building of the filtration type dust collector. Anything can be used. Therefore, when remodeling the existing filtration type dust collector to increase the filtration area, it is only necessary to remodel the cage (2) and extend the filter cloth tube (1) in Fig. 1 without raising the building ceiling. This has the effect that even when the electric dust collector is changed to a filtration type dust collector, it can be installed in the original site or building without increasing the installation area. FIG. 3 shows an embodiment according to claim 2, wherein when the filter cloth tube (1) becomes long and the effect of blowing off dust by the pulse jet becomes difficult to reach the lower part of the filter cloth tube (1), the upper cage is formed. (9) The pulse jet extension injection pipe (1
1) is attached with the support (12) of the reinforcing ring (8) so that the pulse jet reaches directly to the lower part of the filter cloth (1). In this embodiment, dust of the component which is difficult to blow down the pulse jet is used. Is also effective for the extended injection pipe (1
A plurality of 1) can be used. FIG. 4 shows an embodiment of the third aspect of the present invention. In the case where the filter cloth tube (1) is longer and the pulse jet is not effective, or when dust of a component which is more difficult to blow down is dusty, the extended injection pipe ( 11) At the lower end of the partition (1)
3) Provision of pulse jet to ensure upper cage (9)
And the lower cage (10). FIG. 5 is a vertical longitudinal sectional view of the threaded joint according to the embodiment of the present invention. And used by welding to the upper cage (9) and the lower cage (10).
The stopper (16) is provided with a male screw (1
5) Weld it inside the lower end, and on the upper part, female screw (1
4) Attach a fixing pin (17) penetrating up to 4) to prevent rotation of the screw. If this round thread screw is a multiple screw, workability is further improved. FIG. 6 is a vertical longitudinal sectional view of a threaded joint according to an embodiment of the present invention.
An internal extended injection pipe (11) is supported and fixed to a reinforcing ring (8) by a support (12) so that the pulse jet reaches the lower part of the filter cloth tube (1). FIG. 7 is a vertical longitudinal sectional view of the threaded joint according to the third embodiment.
A partition plate (13) is attached to the lower end of the extension injection pipe (11), and the pulse jet is reliably distributed to the upper cage (9) and the lower cage (10) to improve dust removal efficiency.

[0007]

According to the present invention, the cage to be inserted into the filter cloth of the filtration type dust collector is divided into a plurality of upper and lower parts, and the joint is provided. No special scaffolding or auxiliary workers are required, and if the cage is divided into short lengths to fit the ceiling, a long filter cloth tube can be used even in a building with a low ceiling. By providing an extended jet pipe for the pulse jet and a partition at the seam between the upper and lower cages in the stage cage, the pulse jet for sweeping off the collected dust reaches the surface of the lower filter fabric cylinder sufficiently. The use of a large, long filter cloth tube has the effect of reducing the installation area and building of the filter-type dust collector. In addition, if the joints of the cage divided into a plurality of short parts are made to be screw-type, plug-in type, brim type, etc., attachment and detachment work on the site will be easy, and for short cages, transport trucks will be used like long bodies and trailers. No special vehicles are required.

[Brief description of the drawings]

FIG. 1 is a vertical longitudinal sectional view of a prior art example.

FIG. 2 is a vertical longitudinal sectional view of the first embodiment of the present invention;

FIG. 3 is a vertical longitudinal sectional view according to claim 2 of the present invention.

FIG. 4 is a vertical longitudinal sectional view according to claim 3 of the present invention.

FIG. 5 is a vertical longitudinal sectional view of the threaded joint according to claim 1 of the present invention.

FIG. 6 is a vertical longitudinal sectional view of the threaded joint according to claim 2 of the present invention.

FIG. 7 is a vertical longitudinal sectional view of the threaded joint according to claim 3 of the present invention.

[Explanation of symbols]

 (1) Filter cloth tube (2) Cage (3) Support plate (4) Dust chamber (5) Fluid (6) Clean room (7) Bottom lid (8) Reinforcing ring (9) Is an upper cage (10) is a lower cage (11) is an extension injection pipe (12) is a support (13) is a partition plate (14) is a female screw (15) is a male screw (16) is a stopper (17) is a fixing pin

Claims (3)

[Claims] 1. A multi-stage filter cloth cylinder for a filter-type dust collector, wherein a cage to be inserted into the filter cloth cylinder is divided into upper and lower parts and a plurality of short parts are provided. 2. A multi-stage cage of a filter type dust collecting filter filter for a filter type dust collector, in which a cage to be inserted into the filter cloth is divided into upper and lower parts, which are detachably divided into a plurality of parts, and an extended jet pipe of a pulse jet is provided at each upper part. . 3. A cage to be inserted into the filter cloth tube is divided into upper and lower parts, which are detachably divided into a plurality of parts, a detachable joint is provided at each upper stage, and a pulse jet extension injection pipe is provided at each upper stage. Multi-stage cage of filter cloth for filter dust collector.