JP3290268B2 - Filter element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element having a self-supporting lamella structure for separating powder in a gas, and more particularly to a filter element capable of keeping a constant distance.

[0002]

2. Description of the Related Art As an apparatus for recovering and collecting powder from a gas, there is an apparatus having a plurality of filter elements in a casing. In a powder separation device in which a plurality of filters are provided in a casing, it is necessary to install as many filter elements as possible in the casing in order to enhance the ability to collect the powder. It is preferable to reduce the interval between the filters. On the other hand, it is necessary to clean the filter of the filter element which has collected the powder to some extent by backwashing with compressed air or the like. In this case, the interval between the filters needs to have a certain size in order to facilitate the flow of the dropped powder. Therefore, in the powder separation apparatus, it is necessary to set a predetermined interval that satisfies both of the above requirements. In the device,
During the powder collection operation, it is necessary to maintain the interval for a long time. Conventionally, as a device for maintaining the interval between filters, as shown in FIG. 4, a distal end of a reinforcing rod 5 fixed for reinforcement is projected outward from a lower end of a filter element 2 and the like. The filter element 2 was inserted into the notch of the positioning plate 6 having the notch at intervals so that the filter elements 2 were at equal intervals.

[0003]

However, in the case of the positioning plate as described above, after the filter elements are mounted in the casing, all the filter elements are inserted into the respective notches of the positioning plate in the casing. However, since the fixing must be performed at the same time, the operation is complicated, and the operation is required by a plurality of persons. In some cases, the filter element is damaged during the operation. In the powder separation device, about 160
When processing high temperature gas such as ℃, the filter element repeatedly expands and contracts due to heat history,
In such a case, the tip of the reinforcing rod may come off from the notch, in which case the collection of powder becomes insufficient or the filter cannot be completely washed when the filter is washed.

Furthermore, the contact area between the reinforcing rod and the positioning plate is small, and the reinforcing rod or the positioning plate is worn out during the operation. In some cases, the tip of the reinforcing rod comes off the notch, resulting in insufficient collection of powder and incomplete cleaning of the filter. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide a filter element which can be easily operated at the time of attachment to an apparatus and can maintain a constant interval at all times.

[0005]

The above object of the present invention is achieved by the following constitution. In a filter element used for a powder separation device in which planar filter elements are arranged in parallel in the device, a positioning tool is provided at a lower portion of a side portion of each of the filter elements to hold a predetermined interval between the filter elements, A filter element, wherein the positioning tool is provided in close contact with another positioning tool adjacent thereto.

Hereinafter, the filter element of the present invention will be described in detail. By providing the filter element positioning tool used in the present invention on the filter element, the distance between the centers of the respective filter elements in the device can be made equal. The positioning tool may be provided at any position below the side of the filter element as long as the distance between the filter elements can be kept constant. The filter element positioning tool may be directly fixed to the filter element, may be separately fixed to the tip of the reinforcing rod provided on the filter element, or may be formed integrally with the reinforcing rod. When separately fixed to the tip of the reinforcing rod, it is preferable that the positioning tool has a structure (for example, a hole, a protrusion, or the like) for fixing to the reinforcing rod. When fixing to the tip of the reinforcing rod installed on the filter element, it is preferable to attach the positioning tool of the present invention after attaching the filter element to the reinforcing rod since the filter can be easily attached.

The shape of the surface of the filter element positioning tool may be any as long as it is in close contact with the positioning tool provided on another filter element adjacent on both sides. It is preferable that the close contact surface has a larger area in that the distance between the filter elements can be stably maintained. The other shape of the filter element positioning tool may be either a lump or a space having an internal space as long as the filter element positioning tool is integrated with the filter element and has a surface that is in close contact with each other to maintain the interval between the filter elements. If the positioning tool is a lump, the upper part of the positioning tool does not accumulate powder, so that a structure inclined in one direction is preferable. It is particularly preferable that the top is closest to the filter element and has a structure inclined downward from the top toward each side, since the accumulation of powder can be further prevented.

The positioning tool of the present invention may be made of any material as long as it has little thermal expansion and contraction. When fixing to a reinforcing rod, the same material as the reinforcing rod is preferable. Thus, since the expansion and contraction of the positioning tool due to the heat history is the same as that of the reinforcing rod, the reinforcing rod and the positioning tool do not deviate at all.

[0009]

The positioning element is provided at the lower part of the side of the flat type filter element and is integrated. By simply mounting the filter element in the powder separating device, the interval between each of the filter elements can be reduced. It is possible to make the intervals equal to the width, so that the positioning operation after insertion into the casing becomes extremely easy, and there is no problem in operation. Since the positioning tools are supported by the flat filter element and the adjacent positioning tools are in contact with each other, even if the filter element thermally expands or contracts, the position of the adjacent positioning tools changes. Since the distance between the filter elements is kept so that there is no deviation, the distance between the set filter elements is completely eliminated, and the distance between the filter elements can be always kept constant for a long time. In addition, since the adjacent positioning tools are in contact with each other on the surface, wear of the positioning tools hardly causes any problem, and the interval between the filter elements can be always kept constant for a long time. Therefore, since the interval between the filter elements can always be kept constant for a long time, the powder can be stably collected for a long time, and the filter elements can be sufficiently washed. Further, when the filter element is backwashed with compressed air, since the positioning tools adjacent to each other are in contact with each other, the vibration caused by the backflow of the compressed air is easily transmitted to each filter element, and the cleaning of the filter element is facilitated. It can be performed better.

[0010]

Hereinafter, the present invention will be described with reference to Examples.
The present invention is not limited to these. In the present embodiment, a description will be given of a filter element 2 having a positioning tool 1 attached to both ends of a reinforcing rod 5 fixed to the bottom side. The positioning tool 1 attached to the reinforcing rod 5 used in the present invention is made of the same FRP as the material of the reinforcing rod 5.
(Glass fiber reinforced plastic). As shown in FIG. 1 which shows a perspective view, the positioning tool 1 is perpendicular to the filter element contact surface 3 facing the filter element 2 and has mutually parallel and flat positioning tool contact surfaces 4 on both sides. It is in. This positioning tool contact surface 4
It comes into contact with a positioning tool contact surface of a positioning tool attached to another adjacent filter element. The top is a roof type, and the top is on the upper center line parallel to the positioning tool contact surface 4 and faces from the top to both sides of the positioning tool contact surface 4 and the opposite surface of the filter element contact surface 3. And is inclined downward. The gap between the filter element contact surface 3 and the positioning tool contact surface 4 and the gap between the bottom surface of the positioning tool 1 and the positioning tool contact surface 4 are largely chamfered.

Further, as shown in FIG. 1 and FIG. 2, which is a sectional view taken along a plane parallel to the positioning tool contact surface 4 and passing through the center of the positioning tool, a bottom surface of the positioning tool 1 and a filter element contact surface are shown. 3 has a rectangular recessed portion 7 having an opening, and a cylindrical recessed portion 8 above the recessed portion.
Exists. The recesses 7 and 8 are insertion portions of the reinforcing bar 5 having a convex portion having the shape of the concave portion. By inserting the reinforcing bar 5 into the concave portion, the positioning tool 1 is fixed to the reinforcing bar 5. Supported. Such a positioning tool 1
Were attached to both ends of the reinforcing rod 5 fixed to the filter element 2, and they were inserted into the casing of the powder separator. FIG. 3 shows a part of one side of the filter element 2 present in the casing. As shown in FIG. 3, the intervals between the filter elements 2 were uniformly maintained only by installing the filter elements 2 in the casing.

[0012]

According to the present invention, the operation of attaching the filter element to the powder separating apparatus is simple, and the risk of damaging the filter element can be avoided. In addition, by attaching a positioning tool to the filter element, the filter element spacing can always be kept constant, and the filter element spacing caused by the expansion and contraction of the filter element and the wear of the reinforcing rods and positioning plate causes the filter element gap to shift A decrease in element performance can be prevented. Further, since the positioning tools are in surface contact with each other, the vibrations due to the backwashing compressed air are transmitted well, and the backwashing effect is enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a positioning tool of the present invention.

FIG. 2 is a cross-sectional view of the positioning tool of the present invention.

FIG. 3 is a view showing a part of a mounted state of the filter element of the present invention.

FIG. 4 is a view showing a part of a state of attachment of a conventional filter element.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Positioning tool 2 Filter element 3 Filter element contact surface 4 Positioning tool contact surface 5 Reinforcement rod 6 Positioning plate 7 Square recess 8 Cylindrical recess

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-100508 (JP, A) JP-A-6-55024 (JP, A) JP-A-7-108121 (JP, A) JP-A-7-108 108124 (JP, A) JP-B-45-7118 (JP, B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 46/10

Claims (1)

(57) [Claims] 1. A filter element used in a powder separation apparatus in which flat filter elements are arranged in parallel in an apparatus, and a predetermined interval between the filter elements is maintained at a lower portion of a side portion of each of the filter elements. A filter element comprising a positioning tool, wherein said positioning tool is provided in close contact with another adjacent positioning tool in plane.