KR930012035B1 - Back filter dust collector - Google Patents

Abstract

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Description

Bag filter dust collector

1A, B, and C are a plan view, a front view, and a longitudinal sectional view showing a first embodiment of a bag filter retainer having a cylindrical shape substantially circular in shape.

2A, 2B, and C are a plan view and a front view longitudinal sectional view showing a second embodiment of a bag filter retainer having a cylindrical shape having an approximately elliptical shape.

3A, 3B, and 3C are a plan view, a front view, and a longitudinal side view showing a third embodiment of a bag filter retainer having a cylindrical shape of a substantially hexagonal shape;

4A, 4B and 4C are a plan view, a front view and a longitudinal side view showing a fourth embodiment of a bag filter retainer having a cylindrical shape having a substantially rectangular shape;

5a, b, and c are enlarged views of important parts showing the attachment state of the bag filter, and FIG. 5a is a top insertion type, FIG. 5b is a hanging type, and FIG. 5c is a side insertion type.

6a and b are contrast diagrams showing a state where the bag housings adjacent to each other are spaced apart at predetermined intervals from the dust collector housings of substantially the same size, and FIG. 6a is a state in which the conventional bag filter is accommodated. 6b shows an accommodation state of the oval-shaped bag filter.

7a and b are contrast diagrams showing the zones that prevent the dust dust from falling in the vertical dust collector, and FIG. 7a shows the case of the conventional cylindrical bag filter, and FIG. 7b shows the case of the elliptical bag filter. Drawing.

8A and 8B are side views showing the case where the bag filter is configured in the horizontal dust collector, and FIG. 8A shows the accommodating state of the conventional cylindrical bag filter, and FIG. 8B shows the accommodating state of the elliptical bag filter. .

9a and b are contrast diagrams showing areas where the suction force of dust dust is weak in a vertical dust collector, and FIG. 9a is a case of a conventional cylindrical bag filter, and FIG. 9b is a case of an elliptical bag filter. In doing so.

10a and b are contrast diagrams showing the amount of variation of the filter inserted into the retainer, and FIG. 10a shows a case of a conventional cylindrical bag filter, and FIG. 10b shows a case of an elliptical bag filter.

* Explanation of symbols for main parts of the drawings

A: interval B: bag filter

F: Filter R: Retainer

H: Dust Collector Housing D: Dust

M: Narrow Retainer Width N: Wide Retainer Width

1: Attachment Ring 2: Guide Cylinder

3: connecting member 4: reinforcing ring

5: cap 6: cell plate

7: Clean air room 8: Hamjin air room

9 through hole 10 guide tube

11 mounting bolt 12 clamp plate

13: knob nut 15: injection nozzle

14: flow tube

The present invention relates to a bag filter dust collector. As is well known, filter dust collectors are classified into vertical and horizontal shapes according to the attachment and support direction of the bag filter formed by inserting and supporting a filter in a retainer having a cylindrical frame in cross section, and in the case of a vertical dust collector, The through-hole for attachment is formed by forming a cell plate (bag filter support plate) formed in the upper part to the clean air chamber side of the upper side and the impregnated () air chamber side of the lower side, and drilled in the grid position of the cell plate. The opening end side of the bag filter is suspended and installed vertically, and a vertically upper portion of the opening end of the bag filter pipes a flow tube in each of the rows of the bag filter in either the front-rear direction or the left-right direction. Based on one structure and attached to the vertical cell plate that divides the dust collector housing from side to side in case of horizontal dust collector And a horizontal through-hole attached to the through-hole of the bag filter, and a flow tube is piped to the side of the open-end of the bag filter. In order to cope with the dust removal, the dust collected is shaken off every filter row.

In this case, the bag filter B is formed by inserting the filter into a generally cylindrical retainer having the inlet portion having a cylindrical shape and the main body portion having a regular octagonal lattice frame, which is rectangular as shown in FIG. 6A. The bag filters B adjacent to the dust collector housing H of the shape (or cylindrical shape) are arranged in a grid position separated by a predetermined distance A.

The space treatment (A) between the filters is set by the balance of filter performance, filter diameter, and dust collection effect as a filter dust collector, and when it is narrowed down more than necessary, dust dust collected in the filter of the bag filter by spraying high-pressure back air When the filter is shaken and dropped, the filters extended by the injection of the counter air are in contact with each other, and the pulsation phenomenon and the wave phenomenon in the front direction of the filter are blocked, or the drop space of the dust dropped by the dust is eliminated and The fall of vibration damping efficiency, such as being adsorbed by a filter again, becomes remarkable.

Therefore, in order to improve the efficiency without lowering the dust-proofing effect, in the case where the retainer in which the filter is inserted is substantially cylindrical in structure, there is a limit to the number of bag filters to the dust collector housing and the storage efficiency. However, it is effective to increase the surface area of the filter to increase the dust collection effect without narrowing the distance between the bag filters.

This can be easily done by increasing the size of the dust collector housing and making the volume as large as possible to increase the number of bag filters.However, this will increase the size of the dust collector and require an installation area over a wide range. Violation of the request for reduction of equipment cost or downsizing of the whole apparatus is violated. Therefore, it is conceivable to increase the surface area of the bag filter attached to a predetermined cell plate without changing the capacity of the dust collector housing, rather than increasing the size of the dust collector. In this case, in order to increase the surface area of the filter supported on the predetermined cell plate, it is advantageous to select the larger one than the smaller one. In other words, the circumference becomes proportional to 2R, and the area becomes apparent for the proportional to R ² .

However, if the diameter of the filter is made smaller than necessary, the high-pressure back air does not reach the tip of the filter when backflowing from the spray nozzle of the flow tube, that is, when dust dust is dropped off, so that the collected dust adsorbed on the filter The effect of dropping off is greatly reduced.

Therefore, in the present invention, first, the retainer cylindrical shape is not a substantially cylindrical shape as before, but one retainer width at the position where the retainer replaces is formed relatively narrow, and the other retainer width is formed relatively wide, specifically, the bag The frame for the filter retainer is composed of a structure having a wider width of the front and rear and right and left retainer widths, such as an approximately elliptical shape, an approximately hexagonal shape, and an approximately rectangular shape. On the premise that it can be used, it greatly increases the capacity of the bag filter in the dust collector housing to cope with the improvement of its storage efficiency, while significantly improving the efficiency of shaking off and collecting dust per filter. Usefully coped with the request for miniaturization of the housing, and secondly, In order for the bag filter in the form to achieve the damping of small efficiency for the fabric dust at the time of back wash, the art the flow tube probe was perpendicular to the column a relatively large filter retainer width to provide a bag filter dust collector made in the pipe.

Next, various examples of the bag filter retainer R in the present invention will be described with reference to the accompanying drawings.

[First Embodiment of Retainer]

First, in FIGS. 1a, b, and c, which show the first embodiment of the retainer R having the tubular shape substantially elliptical, (1) is a ring for attaching the retainer inlet, and a single bar material is bent. The front and rear portions are formed in a parallel form 1a, and the left and right sides are curved in a semicircle form 1b, and are generally oval shaped rings, and the retainer width M of the parallel portions 1a facing each other before and after ) Is formed in a relatively narrow width, and the retainer width N of the other circular arc portions 1b facing the left and right sides thereof is formed in a relatively wide width.

(2) is a guide cylinder fixed to the attachment ring 1, and becomes the substantially elliptical cylindrical shape which curved the front-back part to the parallel surface 2a, and the left and right sides to the half arc-shaped circular arc surface 2b.

(3) is an elongate cylindrical connecting member having an upper end fixed to the guide cylinder (2), and the left and right both positions (3b) and (3c) and the arc surface (2b) of the central position (3a) on the side of the parallel plane (2a). About 8 pieces are provided together at the center position 3d of the side.

(4) is a reinforcing ring is installed and fixed at appropriate intervals in the longitudinal direction of the connecting member (3), and bending one bar material like the attachment ring (4) to form the front and rear portions in a parallel form (4a) In addition, it becomes the substantially elliptic ring shape which curved the left and right both sides to semi-circle shape 4b.

(5) is a cap fitted to the lower end of the connecting member (3) and is fixed in the form of a substantially oval-shaped lid like the attachment ring (1), the guide cylinder (2), the reinforcing ring (4) and the like.

As a result, the entire retainer R is framed in a substantially elliptical lattice frame.

Second Embodiment of Retainer

Next, the second embodiment of the retainer R is a case in which the frame is formed in a substantially elliptical shape as shown in Figs. 2a, b, and c, and the retainer R is in a position facing each other. One surface form has a relatively narrow retainer width (M) on a relatively large arc surface, while the other is a retainer (R) having a generally wider retainer width (N) on a relatively small circular arc surface, and having an elliptical cross section. have.

Specifically, the attaching ring 1 and the reinforcing ring 4 constituting the retainer R are formed by bending one bar material, and the front and rear portions thereof are formed in relatively large arcs 1a and 4a. The left and right both sides have a generally elliptical ring shape that is curved into relatively small circular arcs 1b and 4b, and the guide cylinder 2 is formed by a relatively large circular arc surface 2a. The left and right both sides have a generally elliptical tubular shape curved with a relatively small circular arc surface 2b, and are substantially elliptical in the form of a cap of the cap 5. In addition, the connecting member 3 is constituted in substantially the same position as in the first embodiment, and thus the entire retainer R is constituted by a generally oval lattice frame.

[Third Embodiment of Retainer]

In addition, a third embodiment of the retainer R is a case where the frame of the retainer R is formed in a substantially hexagonal shape as shown in FIGS. 3A, b, and C, and the retainer R faces each other. Retainer width M is relatively narrow in the parallel surface and retainer width N is relatively wide in the triangular shape, and the shape of one surface of the position is approximately hexagonal retainer R. . Specifically, the attachment ring 1 and the reinforcement ring 4 constituting the retainer R are bent to form a bar material, and the front and rear portions thereof are formed in parallel forms 1a and 4a, and both left and right sides thereof. The part has a substantially hexagonal ring shape that can be bent into triangular forms 1b and 4b, and the guide cylinder 2 forms the front and rear portions thereof in parallel planes 2a, and the left and right sides thereof are triangular surface 2b. It is made into the shape of a substantially hexagonal cylinder which can be bent in the shape of, and in the form of a cap of the cap 5, it is made into a substantially hexagonal shape. In addition, the connecting member 3 is constituted generally in the same positional relationship as in the first embodiment, whereby the entire retainer R constitutes a frame with a hexagonal lattice frame.

Fourth Embodiment of Retainer

Moreover, as a 4th Example of the retainer R, when the cylindrical shape of the retainer R is made into substantially rectangular shape as shown to FIG. 4A, b, c figure, it is one side of the position which the retainer R faces. Retainer M is comparatively narrow in the parallel surface, and the cross section with the relatively wide retainer width N in the other parallel surface becomes a substantially rectangular retainer R. As shown in FIG.

Specifically, the attaching ring 1 and the reinforcing ring 4 constituting the retainer R are bent in one bar material, and the front and rear portions thereof are formed in parallel shapes 1a and 4a. Both sides also have a substantially spherical ring shape which is bent into parallel shapes 1b and 4b, and the front and rear portions of the guide cylinder 2 are formed in parallel surfaces 2a, and the left and right sides are also parallel surfaces 2b. The cylindrical shape of the substantially rectangular shape bend | folded by the shape of the cap 5 is also made into the substantially rectangular shape. In addition, unlike the first embodiment, the connecting member 3 has a total of eight connecting members 3a, 3b, 3c, and (3c) at a position that divides the side of the parallel plane 2a of the guide tube 2 into three parts. 3d), and the frame of the retainer R is formed in a substantially rectangular lattice frame.

[Example]

Then, the filter F having a diameter necessary for the cylindrical bag filter retainer R shown in the first to fourth embodiments is sandwiched and supported, and the opening end of the bag filter B is retained. It is wound around and formed in the attachment ring 1 of (R), and this is fixed and fixed as shown in FIG. 5A, b, and c. In the same figure, reference numeral 6 denotes a cell plate which divides the dust collector housing H into the clean air chamber 7 side and the vacuum chamber 8 side. In the case of the vertical dust collector, the upper part of the dust collector housing H is provided. It is formed in the horizontal direction, and in the case of a horizontal dust collector, it is formed in the perpendicular direction of the said dust collector housing (H). (9) is a through hole for attachment formed in a lattice position of the cell plate (6), (10) is a guide cylinder fixed to the inlet of the through hole (9), all of which are elliptical, hexagonal, It is formed in square shape. Denoted at 11 is an attaching bolt fixed to the cell plate 6 of the main flame portion of the through hole 9, and at 12, an annular clamp plate, the center portion of which is elliptical in the same shape as that of the attaching ring 1. Is formed in a hexagonal shape, a square shape, and the like, and the outer peripheral portion thereof is bent toward the cell plate 6 side. Denoted at 13 is a knob nut which is screwed into the attaching bolt 11.

[Example 1 of Bag Filter Supporting Device]

As an example of the concrete attachment means, as shown in the upper surface insertion type of FIG. 5A, the top filter (not shown) of the vertical dust collector is opened, and the bag filter is inserted into and supported by the filter F in the retainer R from the upper reference number ( B) is inserted into the guide cylinder 10 having the same shape as the retainer R, and the main body is provided in the vacuum chamber 8 of the dust collector housing H, and the opening end of the bag filter B is passed through. Engage in the inlet of the hole 9 and hold it. Subsequently, the clamp plate 12 is inserted into the attaching bolt 11, and the knob nut 13 is screwed in to tighten the upper end and the lower surface of the attachment ring 1 formed by winding the open end of the filter F. do.

[Example 2 of Bag Filter Supporting Device]

In the case of the hanging type of FIG. 5B, the bag filter 3 is inserted from the bottom into the guide tube 10 of the cell plate 6 at the bottom of the vacuum chamber 8 of the vertical dust collector, and then the attachment bolt ( 11) Insert the clamp plate 12 from the bottom, and screw the knob nut 13 to tighten. Then, the lower and upper surfaces of the attachment ring 1 formed by winding the open end of the filter F are pressed between the lower surface of the cell plate 6 and the upper surface of the clamp plate 12, thereby causing the bag The filter B is suspended from the cell plate 6.

[Example 3 of Bag Filter Supporting Device]

In the case of the side insertion type shown in FIG. 5C, the dust collector housing H is disposed on the cell plate 6 in the vertical direction, which divides the dust collector housing H in the horizontal dust collector to the clean air chamber 7 side and the air chamber 8 side. The bag filter B is inserted into and fixedly supported from the side portion of (H), and the rest of the configuration is substantially the same as that of the upper press-fit type attachment structure.

[Example of Flow Tubing Piping]

Also, as shown in FIG. 7B in the case of the vertical dust collector and FIG. 8B in the case of the horizontal dust collector, the distances between the bag filters B of substantially elliptical shape are arranged at a predetermined interval A, and then arranged. The flow tube 14 for injecting high-pressure back air into the bag filter B is piped to be orthogonal to the filter row having a relatively large retainer width N of the bag filter retainer R, and the fifth a and b. As shown in FIG. 3C, the injection nozzle 15 is formed toward the barrel center of each retainer R. As shown in FIG.

[Action]

Then, the clean air is sucked by a blower (not shown) connected to the outlet side of the clean air chamber 7 of the bag filter dust collector, and the dust-containing air is sucked into the dust collector housing H from the inlet of the vacuum chamber 8. Most of the dust is absorbed and collected by the filter F inserted in the retainer R.

At that time, the shape of the bag filter B represents a state in which the connecting member 3 of the retainer R and the like are spread in a wave shape as shown in FIG. 9B, and dust dust is applied to the surface of the bag filter B. At the same time as the adsorption shingles, the dust dust in the relatively weak zone of the suction force formed between these filters is collected by falling toward the bottom of the dust collector housing (H). On the other hand, the dust collected in the bag filter B is instantaneously injected with high pressure back air into the bag filter B from the injection nozzle 15 of the flow tube 14 which is piped every predetermined filter row. Then, each bag filter B is forced to be rounded by the impact force acting from the inside to the outside. The bag filter B expands instantaneously to an elliptical shape, shakes off dust dust from the bag filter B, and simultaneously The impact force propagates in the wave shape and the pulsation shape by the counter air toward the tip direction of the bag filter B. As a result, the dust collected in the bag filter B is shaken off and dropped to the bottom of the housing H. Falls.

Such a dust collecting action and a damping action are repeated appropriately, and the performance improvement is aimed at.

Next, the bag filter of the first embodiment formed by inserting and supporting a filter in a substantially elliptical retainer is a representative example of the present invention, and its usefulness is a conventional bag in which a filter is inserted and supported in a generally cylindrical retainer. Describe against the filter.

(1) The storage efficiency and the number of storage of the bag filter having the same outer circumference length in the dust collector housing can be greatly increased as shown in FIG. 6B. That is, the filtration speed and filter weight of the filter dust collector are determined by the storage coefficient of the filter into the dust collector housing. However, the elliptical retainer can have a smaller cross-sectional area than the cylindrical retainer, so that the volume can be reduced. As a result, the number of storage of the filter in the dust collector housing can be increased as the volume is reduced. For example, if the cross-sectional area of each filter is about half, the number of filters is approximately doubled. Thereby, dust collection efficiency and dust removal efficiency can be improved significantly.

(2) Therefore, when the dust collection capacity and the dust removal capacity are set to the same level as before, the size of the dust collector housing can be coped with a predetermined size, the cost of equipment can be reduced, and the installation space can be reduced.

(3) In addition, the required amount of back air at the time of backwashing is reduced by the amount of volume reduced per piece, and the use cost as a bag filter dust collector is greatly reduced.

(4) The suction force is weakened as shown in FIG. 9B when the filter is inserted into an elliptical retainer and arranged in a lattice form, as compared with the case where the filters are arranged in a cylindrical retainer at predetermined intervals in front, rear, left and right. Since the area X ₂ , i.e., the portion with the same suction force, is formed, it is not affected by the suction force on the adjacent bag filter, so that the dust dust easily falls freely.

In other words, compared to the case where the cylindrical retainer is disposed, the collection efficiency is greatly increased because the free-falling portion below the floating speed of dust dust increases in the case where the elliptical retainers are arranged. Then, the first 9a, b in Fig, X _1, X ₂ represents a section becoming the suction force is weak, becomes X ₁ <X _2.

(5) As a result of both the shake-off effect, both of the filter members are inserted into the retainer, and the suction force acts upon the dust collection of the bag filter inserted in the cylindrical shape or the elliptical shape. Adsorption of dust dust is carried out in a state in which it is supported and concave inward, and this expands greatly to become round by the injection of high-pressure back air, but the magnitude of the change in the filter shape at this time influences the effect of shaking off. As shown in FIG. 10b, the elliptical shape can increase the amount of fluctuation in the outward direction of the filter shape as compared to the cylindrical shape, and at the same time, the wave and pulsation phenomenon in the longitudinal direction are complicated and greatly fluctuated. The effect is very good.

Then, the first 10a, b also S _1, S ₂ according to represent the variation amount of the filter (F), it is a S ₁ <S _2.

(6) In addition, when one side of the bag filter (B) row was collected in the dust collecting state (negative pressure) and the other bag filter (B) row was in the backwashing state (static pressure), the dust dust once blown off compared with the case of FIG. In the case of Figure 7b the rate of adsorption again is very low. In the figure, Y ₁ and Y ₂ represent suction zones that hinder the fall of dust dust, and Y ₁ &gt; Y ₂ .

In the case of the conventional cylindrical retainer of (7), the bag filter may be used in a vertical dust collector vertically supported vertically, but in the case of a horizontal dust collector which horizontally supports the bag filter horizontally as shown in FIG. 8A. Like this, dust dust has accumulated in the upper half of the bag filter in a relatively large amount, but retains the shape of the retainer in an elliptical shape and arranges the relatively folded portion of the retainer width up and down, as shown in FIG. The dust collector housing in the present invention can be efficiently stored and coped with, and the amount of integration when dusting dust is very small compared with the case of arranging a cylindrical bag filter.

In the same figure, V ₁ and V ₂ represent an integral amount, and V ₁ > V ₂ .

(8) Furthermore, the bag filter, which is inserted into and supported by the conventional cylindrical retainer, can be usefully inserted into the retainer of the present invention as it is and is very economical.

(9) Furthermore, as shown in Figs. 9B and 8B, since the flow tube was piped by orthogonal to the filter column having a relatively large retainer width, it was particularly adjacent to the impact force and shock wave that were to be rounded during the injection of counter air. The relatively narrow side of the retainer width is greatly expanded or expanded to form a state of collision with each other between the adjacent filters, as well as the effect of being shaken off due to such a change in the shape of the filter.

On the other hand, if the flow tube is piped by orthogonal to the filter row having a relatively small retainer width, the dust dust once shaken off will be adsorbed back to the adjacent bag filter row before falling back at the time of backwashing. The floating efficiency is low.

Claims (5)

The filter F is inserted and supported in the retainer R which constituted the frame in the shape of a cross section, and many of these bag filters B were hung on the cell plate 6, and the counter air was immediately above the filter row. In the bag filter dust collector formed by piping the flow tube 14, the retainer width M at one of the positions facing the retainer R is formed relatively narrow, and the other retainer width N is A bag filter dust collector, characterized in that the flow tube (14) is formed in a relatively wide pipe and orthogonal to the filter row having a relatively large retainer width (N). The retainer width M is relatively narrow in the parallel surfaces 1a, 2a, and 4a of one side of the position where the retainer R faces, and the other side is an arcuate surface (1). A bag filter dust collector, characterized in that the retainer width (N) is relatively wide in cross section, and the retainer (R) has a substantially elliptical cross section at 1b), (2b), and (4b). The retainer width M is relatively narrow in one side of the position where the retainer R faces each other, and the circular arc surface 1a, 2a, 4a of relatively large diameter, A bag filter dust collector comprising a substantially elliptical retainer (R) having a relatively wide cross-section of a retainer width (N) at relatively small arcs (1b), (2b), and (4b). The retainer width M is relatively narrow in parallel planes 1a, 2a, and 4a, and the other side is a triangular shaped surface (1). A bag filter dust collector, characterized in that the relatively wide cross section of the retainer width (N) in 1b), (2b), and (4b) consists of a substantially hexagonal retainer (R). The retainer width M is relatively narrow at one side of the position where the retainer R faces each other, in a relatively wide parallel plane 1a, 2a, 4a. A bag filter dust collector, characterized in that the cross section of which the retainer width (N) is relatively wide in the relatively narrow parallel surfaces (1b), (2b), and (4b) consists of a substantially rectangular retainer (R).

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