KR20030030146A - Dust Removing Apparatus having function of Self-exciede Vibration and Internal Dust Removing - Google Patents

Abstract

PURPOSE: Provided is a filter bag cage cleaning apparatus used in a dust collector. CONSTITUTION: The filter bag cage cleaning apparatus for use in a dust collector having a venturi tube(5) fixed to a tube sheet(6) at an upper part and a filter bag(2) therein, wherein the filter bag(2) is cleaned using a high pressure air, comprises a coil-shape elastic filter bag cage(3) received in the filter bag(2) and having an upper and lower ends fixed to an upper and lower ends of the filter bag(2), respectively, and a neck section with a smaller diameter than that of other positions; a distributing tube fixed to the venturi tube(5) by an upper fixing frame at an upper end and having a disc shape lower end acting as an engaging section(13); and a protrusion bar with an upper end coupled to the lower end of the distributing tube and a lower end having screw threads(38) and penetrating a lower end of the filter bag(2); an equilibration elastic member provided between the engaging section(13) and the lower end of the filter bag(2); a base plate(16) coupled to the lower end of the filter bag(2) by a nut(38); and a recovery elastic member arranged between the base plate(16) and the filter bag(2).

Description

Filter bag cage dedusting device with self-exciting and internal dust removal {Dust Removing Apparatus having function of Self-exciede Vibration and Internal Dust Removing}

The present invention relates to a filter bag of a pulse type dust collector which removes dust generated in a factory, and more particularly, by using a vibration of a filter bag cage of a coil type when dusting a circular filter bag. The present invention relates to a filter bag cage dust removal device having self-vibration and internal dust removal function to prevent clogging.

By installing a plurality of filter bags inside the general pulse type dust collector, the air is sucked from the factory and discharged to the outside. The air containing dust from the factory is passed through the filter after being sucked into the dust collector, and harmful components remain in the filter while passing through the filter, and only the clean air from which the dust is removed is discharged to the outside.

If the air continuously passes through the filter, the shape of the filter bag is changed. In order to prevent this, a cage is formed inside the filter bag for shape maintenance.

When dust accumulates on the outside of the filter bag and the dust collection performance is reduced, and a differential pressure is generated around the filter bag, a high-pressure backwash air generated by the external compressor is supplied to the venturi tube through a blowing tube in a direction opposite to the dust collecting direction. The dust removal process removes dust adsorbed on the outside. The high-pressure backwash air expands while passing through the venturi tube of the filter bag to generate pressure inside the filter bag to expand the filter bag and to remove dust adsorbed on the filter bag.

However, in the conventional dust collector as described above, the fine dust is adsorbed to the outside of the filter bag, or the fine dust is introduced into the fiber structure of the filter bag. Due to the dust adsorbed on the outside or the fine dust inside the fiber tissue, the dust removal efficiency is lowered, thereby causing harmful dust to flow out from the factory to increase the environmental pollution.

In addition, there is a problem of reducing the productivity of the filter bag by reducing the life of the filter bag, a lot of money and time is put into maintenance and management of the dust collector.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a filter bag cage dedusting device having self-vibration and internal dedusting function which removes fine dust and increases dust removal performance by self-vibration of the filter bag. .

Another object of the present invention is to provide a filter bag cage dedusting apparatus having a self-vibrating and internal dedusting function to blow back high pressure backwash air from the inside of the filter bag cage to the outside to remove the dust adsorbed on the filter bag cage.

1 is a conceptual diagram of a conventional dust collector and dust removal device.

2 is a block diagram of a filter bag cage dust removal apparatus having self-vibration and internal dust removal function according to the present invention

Figure 3 is a detailed view of the rotation block of the filter bag cage dust removal apparatus having the self-vibration and internal dust removal function according to the present invention.

4 is an operation explanatory diagram of dust collection device of the filter bag cage dust removal device having self-vibration and internal dust removal function according to the present invention.

5 is a detailed view of a rotating block for the filter bag cage dust removal apparatus having the self-vibration and internal dust removal function according to the present invention.

※ Description of main parts of drawing ※

1: dust collector 2: filter bag

3: elastic filter bag cage 4: airline

5: Venturi tube 6: tube sheet

7: injection tube 8: dust

9: vertical injection pipe 10: rotary induction pipe

11: elastic neck portion 12: rotation block

13: end 14: balanced elastic member

15 resilient elastic member 16: settle plate

17: adjusting nut 18: protrusion bar

19: elastic restraint member 20: packing member

21: fixed bar 22: pillar bar

23: fixed shaft 24: fixed nut

25: air guide 26: tapered surface

27: lower fixed frame 28: upper fixed frame

29: external auxiliary ring 30: dust removal device

31: lock nut 32: cap nut

33: air discharge port 34: exhaust air line

35: dust exhaustion pipe 35: through groove

37: fine nozzle 38: screw

39: internal auxiliary ring 40, 40 ': solenoid valve

41: switch C: compressor

M: Manometa R: Rotary Valve

As described above, the technical configuration of the present invention includes a coil-type elastic filter bag cage having an elastic neck portion which is inserted into the filter bag and fixed to both ends at the top and bottom of the filter bag, and the outer diameter thereof decreases at the top thereof, and Venturi. An upper fixing frame and a lower fixing frame are formed at the top to fix the tube, and a spray tube having a disk-shaped locking end is formed at the bottom, and one end is coupled to the lower end of the locking end and penetrates the lower end of the filter bag. A thread is formed, and an equilibrium elastic member is interposed between the locking end and the lower end of the filter bag, and a protruding bar having a return elastic member is interposed between the seat plate and the filter bag fastened by the adjusting nut to the thread. .

In addition, a exhaust air line for supplying a high pressure air to the injection tube is provided, a plurality of air discharge port is formed in the injection tube, the through hole is formed in the rotary block fixed to the injection tube so that the air discharge port and the through groove coincide. And a coil induction pipe having one end connected to the through hole of the rotation block, and a vertical injection pipe having an intermediate portion connected to the other end of the rotation induction pipe and having a plurality of fine nozzles. do.

In addition, a solenoid valve is provided to open and close high-pressure air in the air line and the exhaust air line, respectively, and is characterized in that it comprises a switch for controlling the opening and closing of the solenoid valve.

Hereinafter, a filter bag cage dedusting apparatus having self-vibration and internal dedusting functions of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 2, the dust collecting device 30 installed inside the dust collector 1 is fixed to the tube sheet 6 of the dust collector.

A flange portion for fixing to the tube sheet 6 has a cylindrical shape in the insertion port 30 of the dust removal device 30 formed in the tube sheet 6, and a lower portion of the filter bag 2 is inserted. The filter bag 2 extends over the tubesheet 6 by the flange at the top of the filter bag 2.

The lower end of the inside of the filter bag (2) is inserted into the elastic restraint member (19) in the form of a disk having a through hole in the center, the inside of the filter bag (2) has a coil shape and the outer diameter is the inner diameter of the filter bag (2) About the same elastic filter bag cage 3 is inserted. An upper portion of the elastic filter bag cage 3 is formed with an elastic neck portion 11 having an outer diameter smaller than that of the other portions of the elastic filter bag cage 3.

The sealing packing member 20 is positioned on the flange portion of the filter bag 2 and the venturi tube 5 is positioned on the packing member 20.

An end portion of the upper portion of the venturi tube 5 for pressing is inserted into the filter bag cage over the packing member 20.

In order to keep the filter bag (2), the elastic filter bag cage (3) and the venturi tube (5) fixed to each other, a plurality of pillar bars (22), a fixed shaft (23), and a fixing bar (21) on the tube sheet. To prevent separation of the filter bag (2), the elastic filter bag cage (3) and the venturi tube (5) during maintenance, and the filter bag (2), the elastic filter bag cage (3) and the venturi tube during maintenance Smooth separation of (5).

A plurality of fixed shafts 23 formed on a screw thread are formed at the upper end of the flange portion of the filter bag 2 of the tube sheet to which the filter bag 2 is fixed, and a column bar 22 is formed on the outer axis of the fixed shaft 23. ). The upper end of the column bar 22 is hinged to one end of the fixing bar 21, the upper end of the fixing shaft 23 to allow the fixing bar 21 to cross. The fixing nut 24 is coupled to the upper portion of the fixed shaft 23, and the other end of the fixing bar 21 pressurizes the end of the venturi tube 5 so that the filter bag 2, the elastic filter bag cage 3, and the like. Secure the Venturi tube. When disassembling, loosen the fixing nut 24 to release the fixing bar 21 to disassemble.

An air injection tube capable of supplying high pressure air separately from the conventional air line 4 is installed on the top of the venturi tube 5, and the injection tube 7 receiving the high pressure air of the exhaust air line 34 is coupled. do.

In the center of the filter bag (2) is inserted into the injection tube 7 and the balanced elastic member 14, the rotary block 12 is formed.

The injection tube 7 having a tapered surface for smooth connection with the exhaust air line 34 at the top thereof has an upper fixing frame 27 and a lower fixing frame 27 formed at the top thereof to be fixed to the venturi tube 5. . The tapered surface at the top makes the end of the air injection pipe coincide with the tapered surface so that there is no air leak. The upper fixing frame 27 and the lower fixing frame 27 each have an inner ring formed on the outer side of the injection tube 7, and are connected to the outer ring by a plurality of arms. The outer diameter of the outer ring is such that the upper fixing frame 27 and the lower fixing frame 27 coincide with the inner diameter of the venturi tube 5 at the portion where the fixing tube 27 is in contact with the venturi tube 5, and the upper fixing frame 27 and the lower fixing frame When the 27 is installed, the distance from the smallest diameter of the venturi tube 5 is fixed so that the injection tube 7 is fixed.

On the outer circumferential surface of the injection tube (7) passing through the venturi tube (5) is formed an air discharge port (33) connected to the threaded portion and the inner tube of the injection tube (7) to form a rotation block (12).

The bearing is inserted into the rotating block 12 to facilitate rotation, and the cap nut 32 is used to prevent the bearing from being separated. The lock nut 31 is inserted into the upper and lower portions of the rotating block 12 to be fastened to the screw formed on the outer circumferential surface of the injection tube 7 to fix the rotating block. The upper and lower sides of the rotation block 12 are fixed by the lock nut 31, and the bearing is inserted in the center portion thereof, so that the movement is impossible but the rotation is possible.

A through groove 35 is formed at one side of the outer circumferential surface of the rotary block 12 so that air is supplied from the injection tube 7 to the air discharge port 33, and the through groove 35 is vertical to the end of the spiral. The rotating induction pipe 10 in which the threaded pipe 9 is formed is fixed. A plurality of fine nozzles 37 are formed in the vertical injection pipe 9.

When the high pressure backwash air is supplied to the injection tube 7, it is injected into the inner wall of the filter bag 2 through the through groove 35, the rotary induction pipe 10, the vertical injection pipe 9, and the fine nozzle 37. When the rotary induction pipe 10 is spirally formed and the backwash air is injected into the fine nozzle 37, the injection tube 7 is rotated.

The rotary tube 12 and the rotary induction pipe 10 as described above are formed in the injection tube (7).

The lower end of the injection tube 7 is formed by engaging the disk-shaped locking end 13 with a certain distance from the elastic restraint member 19, the protruding bar 18 is formed integrally to the lower end of the locking end (13). do. The protruding bar 18 penetrates through the lower end of the filter bag 2 and protrudes outward from the lower end of the filter bag 2, and a thread is formed at the lower end of the protruding bar 18.

A balanced elastic member 14, such as a spring, and an internal auxiliary ring 39 are inserted between the locking end 13 and the elastic seating member 19 at the lower end of the filter bag 2. A protruding bar 18 penetrates to the center, and an inner auxiliary ring 39 having a disk shape is positioned on the upper side of the elastic restraint member 19, and both ends of the balanced elastic member 14 are engaged with the locking end 13 and the inner auxiliary ring. Insert so that it is fixed by (39).

A return elastic member 15, such as a spring, is also inserted into the outer lower end of the filter bag 2, similar to the inner lower end of the filter bag 2. After inserting into the protruding bar 18 protruding from the outer bottom of the filter bag of the outer auxiliary ring 29, inserting the return elastic member 15, inserting the settle plate 16, and then adjusting the adjustment nut 17 to the lower end of the protrusion The two ends of the return elastic member 15 are fastened by the external auxiliary ring 29 and the settle plate 16 by fastening to the nasan acid formed in the acid.

The air line 4 and the exhaust air line 34 are installed in the air line 4 and the exhaust air line 34 installed at the upper portion of the venturi tube by installing solenoid valves 40 and 40 'and a switch 41 for control. To control the flow of high pressure air.

The filter bag cage dedusting device 30 having the self-vibrating vibration and the internal dedusting function having the above-described configuration functions as follows.

When dust collection is performed as shown in Fig. 3, dust is adsorbed to the outside of the filter bag 2 having the elastic filter bag cage 3 installed therein, and is reduced by the pressure difference between the filter bag 2 and the outside.

Adsorption accumulates and differential pressure is generated, and high pressure air is supplied into the filter bag 2 through the venturi tube 5 through the air line 4. First, some of the dust 8 accumulated on the outside of the filter bag 2 is removed by the air supplied through the air line 4.

When the air is supplied into the filter bag 2, the coil-type elastic filter bag cage 3 is easily extended downward, so that it is extended in the vertical direction, and the return elastic member 15 outside the bottom of the filter bag 2 is Will be compressed. The stretched elastic filter bag cage 3 is further reduced by the restoring force of the return elastic member 15.

At this time, a self-producing vibration is generated in which the elastic filter bag cage 3 and the balance elastic member 14 try to extend again and the repulsive force is repeatedly applied to the return elastic member 15. The vibrations of the filter bag cage 3 which extend and contract repeatedly cause fine vibration to be applied to the filter bag 2, and the dust adsorbed to the outside of the filter bag 2 is removed by the fine vibration. The efficiency rises.

In addition, the high pressure air supplied through the high pressure exhaust air line 34 is supplied to the injection tube 7.

The high pressure air supplied to the exhaust air line 34 is supplied to the injection tube 7, and the air supplied to the injection tube 7 is air through the through groove 35, the rotary induction pipe 10, and the vertical type. It is injected into the inner wall of the filter bag 2 through the pipe 9 and the fine nozzle 37. The high pressure air injected through the fine nozzle 37 removes the dusts 8 adsorbed on the filter bag 2 to double the dust removal efficiency.

When the air is supplied through the fine nozzle 37, the plurality of rotary induction pipes 10 formed in the injection tube 7 is formed in a spiral in the same direction, so that when the air is injected through the fine nozzle 37, the rotation induction Tube 10 is rotated by the reaction of the air injection itself is exhausted with respect to the whole direction inside the filter bag (2). Accordingly, the exhaustion is also made in the exhaust device 30.

Filter bag cage dedusting device having self-vibration and internal dust removal function having the above-described configuration and action is difficult to reduce the dust of dust during dust removal and the dust of fine dust penetrated into the filter bag, so that the dust removal efficiency is lowered and the dust removal efficiency is reduced. The fall of the dust collection performance is prevented from falling.

Therefore, the life of the filter bag is reduced to prevent the problem that the operation rate of the facility is reduced.

Claims (3)

A venturi tube 5 and a cylindrical filter bag 2 are fixed to the tube sheet 6 inside the pulsed dust collector, and high pressure air is supplied to the filter bag 2 through the air line 4. In the dedusting apparatus of the filter bag to be dedusted by A coil-type elastic filter bag cage having an elastic neck portion 11 formed therein, which is inserted into the filter bag 2 and fixed to both ends at the top and bottom of the filter bag 2, and whose outer diameter decreases at an upper portion thereof. 3); An injection tube (7) having an upper fixing frame (28) and a lower fixing frame (27) formed at an upper portion to fix the venturi tube (5), and a disk-shaped locking end (13) formed at a lower end thereof; One end is coupled to the lower end of the locking end 13 and penetrates the lower end of the filter bag 2, and a thread 38 is formed at the lower end, between the locking end 13 and the lower end of the filter bag 2. A protruding bar having an equilibrium elastic member 14 interposed therebetween and a return elastic member 15 interposed between the settling plate 16 fastened by the adjusting nut 17 to the screw thread 38 and the filter bag 2. 18); filter bag cage dedusting device having a self-vibration and internal dust extraction function comprising a. The method of claim 1, A dedusting air line 34 is provided to supply high pressure air to the injection tube 7, and a plurality of air discharge ports 33 are formed in the injection tube 7, and a rotation block having a through groove 35 formed therein. (12) characterized in that the air discharge port 33 and the through groove 35 is fixed to the injection tube (7) to match, A coil induction pipe 10 having one end connected to the through hole 35 of the rotation block 12, and an intermediate portion connected to the other end of the rotation induction pipe 10, and a plurality of fine nozzles 37. Filter bag cage dust removal device having a self-vibration and internal dust removal function characterized in that it further comprises a vertical injection pipe (9) formed. The method of claim 2, Solenoid valves 40 and 40 'are provided to open and close high-pressure air in the air line 4 and the exhaust air line 34, respectively, and for controlling the opening and closing of the solenoid valves 40 and 40'. Filter bag cage dust removal apparatus having a self-vibration and internal dust removal function, characterized in that it comprises a switch (41).