JPH01203017A - Dust collector - Google Patents

Abstract

PURPOSE:To enlarge filtration area and sweep off dust quickly by disposing in tension sheet-shaped filter components along a plurality of outer surfaces of retainers disposed radially on a retainer retaining means and making a filter chamber formed thereon rotatable. CONSTITUTION:A plurality of filter chambers 22 are formed and disposed in the star shape by disposing in tension sheet-shaped filter components 20 along the outer surfaces of a plurality of retainers 17 provided radially on a retainer retaining means 14 of a filter cylinder F, and the cylinder F with a comparatively large filtration area for the size of space is provided. Also, compressed air can be jetted concentratedly into a filter chamber 22 rotating in the front section of a jetting opening 20 and dust adhered to the filter component 20 can be swept off by making the cylinder F rotatable and providing a leakage prevention plate 23 on a compressed air jetting means 24. Further, dust can be discharged out of a hopper chamber simultaneously with being swept off by linking the relation of the cylinder F and a dust scraping means.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a dust collector.

[Conventional technology]

Conventionally, the device shown in FIG. 4 has been known as this type of device.

In the figure, the population 2 below the dust gas 1 such as dust collecting air
The dust flows into the dust collection chamber 3 by pressure feeding or suction, and the dust adheres and accumulates on the surface of the filter cylinder 4, and the filtered gas such as air passes through the filter WU4 and is discharged from the outlet 5 at the upper part. Dust 6 adhering to the surface of the filter tube 4 is brushed off and discharged by a rotary valve 7. Blow tubes 8 are arranged for each row of filter tubes, and a jet injection port 9 is provided on the lower surface of the blow tube 8 at a position on the center line of the tube 4. This injection port 9
Compressed air compressed by a compressor 10 is injected from the compressor 10.

By operating a programmer timer (not shown), 2.
One of the two pilot valves (electromagnetic valves) V, V is energized, and the injection port 9 of the blow tube 8 is energized momentarily, for example at 0. Compressed air is injected between Is. This injected air sucks in 5 to 7 times more secondary air from the surroundings,
The air enters the inside of the filter cylinder 4 through the Henchuri tube 11, and at this time, the air flowing back toward the outer surface of the filter cloth 12 removes the vibrations of the entire filter cloth 12 caused by the impact, thereby brushing off the dust that has adhered and accumulated.

13 is a 7-nometer for monitoring the pressure inside the dust collection chamber 3. Felt is used for this filter cloth. Filter cloth materials include wool, polyester, polypropylene, homoacrylic, nylon, heat-resistant nylon, and Teflon, and are selected for a variety of applications, including surface treatment and chemical treatment. , spunhont and other felts have also been used. A plurality of cylindrical filter tubes with filter cloth shapes such as cylindrical and square tubes have been used.

[Problem to be solved by the invention]

However, in conventional dust collectors, when multiple filter cloths or cylindrical filters are used, the space becomes large compared to the obtained filtration area, and multiple filter cloths or cylinders are used.
``It required a magnetic valve and a tire flamm valve, and the filtration speed was not uniform near and far from the wind path, making it difficult to replace easily and resulting in high replacement costs.

([1st point]) This invention was made to solve such problems, and by providing a rotatable filter chamber with a plurality of filtration chambers arranged in a star shape, it is possible to reduce the number of filtration chambers during repair. Only the sheet-like filtration member needs to be replaced, and the filtration area can be widened considering the space required. By installing a leak prevention plate on the compressed air injection means, compressed air can be concentrated at the front of the injection unit. The purpose of the present invention is to provide an inexpensive dust collection device that can quickly blow off attached dust and discharge it into a hopper chamber.

[Means to solve the problem]

For this reason, the dust collector of the present invention has a plurality of filters arranged in a star shape by stretching a sheet-like filter member along the outer surface of a plurality of retainers arranged radially on the retainer holding means. A filter tube having a chamber, the filter tube being rotatable, and a leak prevention plate as the compressed air injection means so that the compressed air injection means injects compressed air only into the rotated filtration chamber toward the surface of the injection port. By providing a dust scraping means which blows off dust adhering to the filter member of the filtration chamber by the compressed air injection means, and scrapes up the dust in conjunction with the filter opening drive means and discharges it to the hopper chamber. It aims to achieve the objectives of

[Effect]

With the above configuration, in the dust collector of the present invention, the sheet-like filtration member is stretched over the retainer and the filtration chambers are arranged in a star shape, so that the filtration function is good considering the space taken.
The filtration member can be easily replaced, repaired and inspected, and compressed air can be concentrated and injected into the filtration chamber that rotates sequentially in the direction of the injection port, quickly brushing off attached dust and improving the filtration rate. By providing the dust scraping means in conjunction with the driving means of the filter cylinder, the dust adhering to the filtration chamber rotated in the nN direction of the injection port can be brushed off and discharged to the hopper chamber.

〔Example〕

Hereinafter, a dust collector according to an embodiment of the present invention will be explained based on the drawings.

Fig. 1 is a front sectional view showing a dust collector according to an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view showing a cylinder of the dust collector, and Fig. 3 is a cross-sectional view taken along the line m-m in Fig. 2. FIG. 3 is a plan view cut along a line. Note that the same (equivalent) components as in the conventional device shown in FIG. 4 are represented by the same reference numerals to avoid duplication of explanation.

In the figure, reference numeral 14.14 denotes a pair of retainer holding means for holding the retainer of the filter WIF that filters the dust gas 1. the second retaining member 16.
16, and this first holding member 15.15 has bosses 15a, 15a in the center, and bosses 15a, i5.
a to the cylindrical body 15c via the arms 15b, 15b.

It is integrated into 15c. 17 is the first holding member 15
．． 15 and the second holding member 16. In this embodiment, a U-shaped retainer is used. The circumferential side of member 15.15 and the second
The holding member 16 is held between the circumferential sides of the holding member 16. Reference numeral 618 indicates a spring hook attached to the parallel portions 17a, 17a, and reference numeral 19 indicates a member 18.
18 is a spring that is an elastic member stretched between the springs 19 and 20, the spring hook 20 is a sheet-like filtering member stretched along the outer surface of the retainer 17 and 17 to which the member 18 is attached. , 21 are retainers 17, 17. . . . . A locking rod 22 that locks between the retainer holding means 14. -... is formed every...
The filtration chambers F are arranged in a star shape, and F is a filter tube made up of the filtration chambers 22 arranged in a star shape, and the filter tube F is made rotatable around the center of the main body as will be described later.

8a is an upper blow tube fitted in the center of the filter cylinder F, 8b is a lower blow tube, and the upper blow tube 8a is fitted into the upper and lower holding means 14.14 via bearings, and F is rotatable around an upper blow tube 8a, and a lower blow tube 8b is fixed to a piston-side mounting base 36 of a hydraulic device 38, which will be described later.

23 rotates the filter tube F fitted in the center of the upper blow tube 8a and directs compressed air into the outer filtration chamber 22 in order when dust attached to the surface of the filtration chamber 22 is removed. A leak prevention plate 23a prevents compressed air from leaking into the filtration chamber 22 on both sides of the filtration chamber 22, which tries to blow off attached dust by spraying the air. A connecting tube 24 is provided between the low tubes 8a, and a leak prevention plate 23.24 is connected to the connecting tube 23a. Upper blow tube 8a, -) compressed air injection means having a part of blow tube 8b, 25 compressed air injection means 24
An outer tube into which the upper blow tube 8a and the lower blow tube 8b are fitted and the filter cylinder F is placed on the upper part, 26 is a collar fitted near the upper part in this outer tube 25, and 27 is in contact with this collar 26. The backing 27 inserted into the outer tube 25 is pressed between the upper blow tube 8a and the lower blow tube 8b.

28 is an outer tube 25 into which the lower blow tube 8b is fitted.
29 is a guide groove for vertically guiding the protrusion 28; 30 is a grooved tube provided with the guide groove 29; 30a is a dust collecting means fixed to the grooved tube 30; 31 is a partition plate on which the grooved pipe 30 to which the dust collecting means 30a is fixed is placed; 32 is a hopper chamber in which the inside of the dust collector is partitioned from the dust collection chamber 3 by the partition plate 31;
3 is a gear attached to the outer tube 25 in this hopper chamber 32, 34 is a gear that engages with this gear 33, 35 is a reduction gear to which this gear 34 is attached, and D is this reduction gear 3.
Power is transmitted from an electric motor (not shown) to gear 33.3.
4 is a drive means through which the outer tube 25 is rotated; 36 is a mount to which the outer tube 25 is rotatably attached, which is rotated by the drive of the drive means; 37a is a mount 36; 37 is a hydraulic cylinder into which this piston rod 37a is inserted, 38 is a hydraulic device that generates the hydraulic pressure supplied to this hydraulic cylinder 37, and 39 is a hydraulic cylinder that generates the hydraulic pressure generated by this hydraulic device 38. The hydraulic cylinder 39a is the hydraulic cylinder 39
The piston rods 38a and 38a inserted into the hydraulic cylinders 37 and 39 are hydraulic pipes that lead the hydraulic pressure generated by the hydraulic device 38 to the hydraulic cylinders 37 and 39, and the hydraulic pipes 38a lead the hydraulic pressure into the hydraulic cylinder 37 and the piston rods 37a. The outer tube 2 is rotatably attached to the attached mounting base 36.
5, the protrusion 28 of the outer tube 25 comes into contact with the upper end of the guide groove 29 of the grooved tube 30, and the filter cylinder F is held in that position by hydraulic pressure. In this state, the dust gas is filtered by rotating the filter tube F as described later. When the oil pressure of the cylinder 37 is reduced at the end of the filtration work, the mounting base 3 is lowered via the piston rod 37a.
6. Outer tube 25. The filter cylinder F is supported by the support member 40, and when not in use, the pressure inside the hydraulic cylinder 37 is reduced, and the filter IF is lowered and supported on the support member 40. There is. 10a is a compressed air pipe that leads compressed air from the compressor 10 to the lower end of the lower blow tube 8b, and T is a programmer timer.

The effect will be explained below.

1) When in use, the hydraulic system 38 is turned on to operate, generates hydraulic pressure, and this hydraulic pressure is transferred to the hydraulic cylinder 37.
37 through hydraulic piping 38a, 38a, and the piston rod 37a.

By raising the mounting base 36 attached to the upper end of the outer tube 25.37a, the outer tube 25.37a is supported on the receiving member 40. The filter cylinder F and the compressed air injection means 24 are raised until the protrusion 28 protruding from the outer tube 25 comes into contact with the upper end of the guide groove 29 of the grooved tube 30.

2) Hydraulic pressure is introduced into the hydraulic syringe 39 through the hydraulic piping 38a, and the piston rod 39a drives the deceleration device 35. By moving the gear 33 to the left in FIG.
Engage with L33.

3) When the electric motor is turned on, the outer tube 25 is rotated by the rotation of the gear 33 engaged with the gear 34 of the reduction gear 35, and the filter tube F and the dust scraping means 30a are rotated.

4) By turning on the compressor 10 and sucking the dust gas 1 flowing in from the inlet 2 toward the outlet 5, the dust gas 1 is directed from the outside of the filtration chamber 22 to the inside, and is filtered by the filtration member 20. Dust adheres to the surface of the filter member 20.

5) In order to blow off the dust adhering to the surface of the filter member 20, the pilot valve V is energized by operating it at a desired time interval preset by the programmer timer T, and the injection from the blow tube 8 [19 to the compressor] is activated. 1
At 0, compressed air is ejected and dust is blown away.

6) The dust 6 that has been brushed off the surface of the filter member 20 and accumulated on the partition plate 31 is collected by the rotation of the dust collecting means 30a and falls freely into the hopper chamber 32, and is collected by the rotary valve 7. I will be released to the outside.

7) When the dust collection is finished, the intake of the dust gas 1 is stopped, the compressor 10 is turned off, and the electric motor is turned off, so that the outer tube 25. The filter cylinder F and the dust collecting means 30a are stopped.

8) To disable the dust collector, remove the tooth width 34 on the reduction gear 35 side by reducing the hydraulic pressure in the hydraulic cylinder 39 and moving the piston rod 39a to the right in Fig. 3. After separating the gear 33 attached to the pipe 25, 9) Reduce the hydraulic pressure in the hydraulic cylinder 37. 25. When the filter tube F and the compressed air injection means 24 are lowered until the protrusion 28 protruding from the outer tube 25 comes into contact with the F end of the guide groove 29 of the grooved tube 30, the lower end of the filter tube F is placed above the receiving member 40. Supported by

10) By turning off the hydraulic system 38, the attached dust collector is left unused until it is used.

According to example b1 of this invention, a plurality of retainers 17 are provided radially on the retainer holding means 14.14 of the filter tube F.
,17. A filter tube with a plurality of filtration chambers 22 arranged in a star pattern is used by stretching a sheet-like filtration member 20 along the outer surface of the filtration chamber 22, which saves space. Since the filtration surface is large and the filtration member is not sewn, the sheet-like filtration member 20 can be replaced at the time of repair, and the replacement cost is low and can be done in a short time. By providing 23 in the compressed air injection means 24, the compressed air can be concentratedly injected into the filtration chamber 22 rotated in the plane of the injection 19, and the compressed air can be compressed into the filtration chambers 22 on both sides of the filtration chamber 22. Since air leakage can be prevented, the dust 6 adhering to the filter member 20 can be instantly brushed off. Furthermore, the rotation of the filter cylinder F by the drive step and the dust scraping by the dust scraping means 30a are linked. By rotating the filter tube F, the powder I particles 6 attached to the filtration member 20 of the filtration chamber 22 rotated to the front part of the injection port 9 can be brushed off and discharged to the hopper chamber 32, thereby improving dust collection efficiency. A good dust collector can be provided at low cost.

Therefore, in the above embodiment, the upper blow tube 8a and the lower blow tube 8b are constructed separately, and the upper blow tube 8a and the filter cylinder portion can be taken out from the dust collection chamber 3. 3. You can inspect and repair the filtration member outside without going inside.

(Other Embodiments) In an embodiment of the present invention, compressed air injection means 24 is provided for injecting compressed air from inside the filtration chamber 22 in order to blow off dust adhering to the surface of the filtration member 20 of the filtration chamber 22. However, there is a means (not shown) for injecting compressed air from the outside of the filter cylinder F.
Dust can be removed even better by providing a

In this case, it is unnecessary to explain that if the compressor 10 of the compressed air injection means from the inside is shared as the compressed air supply limit of the means for compressing from the outside, the number of compressors can be reduced.

〔Effect of the invention〕

As explained above, according to the present invention, a sheet-like filter member is stretched and installed along the outer surface of a plurality of retainers provided radially on the retainer holding means.
Since we use a filter cylinder with multiple filtration chambers arranged in a star shape, the filtration area is large considering the space it takes up, and when repairs are made, only the sheet-like filtration member needs to be replaced, which can be done in a short time.
In addition, by making the filter cylinder rotatable and providing a leak prevention plate in the compressed air injection means, compressed air can be concentrated and injected into the filtration chambers that rotate sequentially at the front of the injection port, and both sides of the filtration chambers can be sprayed in a concentrated manner. This prevents the dust from leaking into the air, quickly brushing off the attached dust, and improving the filtration rate.Furthermore, by providing a dust scraping means that works in conjunction with the filtration drive means, the rotating This has the effect of providing a dust collector at a low cost that can blow off dust adhering to a filtration chamber and discharge it to a hopper chamber to collect the dust.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view showing a dust collector according to an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view showing a cylinder of the dust collector, and Fig. 3 is a cross-sectional view taken along the line m-m in Fig. 2. A plan view cut along a line, and FIG. 4 is a front sectional view showing a conventional device. In the figure, 1... Dust gas 3... Dust collection chamber 6... Dust 9... Injection port 14... Retainer holding means 17 ...Retainer 20...Filtering member 22...Filtering chamber 23...Leak prevention plate 24...Compressed air injection means 30a... . . . Scraping means 32 . . . Hopper chamber In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a dust collector equipped with a dust collection chamber and a hopper chamber, a sheet-like filtration member is installed along the outer surface of a plurality of retainers radially provided on a retainer holding means of a filter tube that filters dust gas in the dust collection chamber. By tensioning the tube, a filter tube having a plurality of filtration chambers arranged in a star shape, a filter tube drive means for rotating this filter tube, and a filtration tube rotated by the filter tube drive means in the front part of the injection port are formed. A compressed air injection means is provided with a leak prevention plate to inject compressed air only into the room, and the compressed air injection means brushes off dust adhering to the filtration member of the filtration chamber, and the dust is interlocked with the filter cylinder drive means. A dust collector equipped with a means for scraping up dust and discharging it into a hopper chamber.