JP5575570B2 - Filter regeneration device - Google Patents

Description

  The present invention relates to a filter regenerator that removes dust adsorbed inside a bag-shaped filter having an opening and enables reuse of the filter.

  A turbine provided in a thermal power plant or the like is supplied with external air (outside air) taken from an intake port as combustion air (hereinafter referred to as intake air). If dust such as dust and dirt is contained in the intake air, there is a risk of damaging a device such as a turbine. Therefore, a filter is provided at the intake port, and the intake air is cleaned by adsorbing dust to the filter.

  Generally, a plurality of filters including a pre-filter and a high-efficiency filter are juxtaposed in the intake path in the order of decreasing particle size of particles that can be captured. The pre-filter is a filter disposed at the front stage at the intake port, and captures dust having a relatively large particle diameter out of dust contained in the intake air. The high-efficiency filter is a filter that is disposed after the prefilter, and captures fine dust having a very small particle diameter that has passed through the prefilter. With such a configuration, relatively large dust is captured in advance by the pre-filter, and the high-accuracy and expensive high-efficiency filter can be prevented from being clogged in the short term and its life can be extended.

  Many of the above prefilters are composed of synthetic fibers such as non-woven fabrics or glass fibers, and various shapes such as those in which synthetic fibers are stacked in layers or pleated. Has been proposed. Patent Document 1 also discloses a bag-like (also called pocket type) filter.

  Incidentally, the amount of dust adsorbed by the filter increases as the intake air dust is removed, and eventually the filter becomes clogged. As a result, a differential pressure between the suction pressures is generated and the pressure loss increases. For this reason, conventionally, when the differential pressure exceeds a predetermined value, all the filters are replaced. However, an intake port of a thermal power plant or the like has a remarkably large area, and a huge number of filters (for example, 456 in the case of a pre-filter) are installed. Depending on the surrounding environment, the prefilter is frequently replaced (for example, once every 3 to 4 months). This generates a large amount of waste filter throughout the year. Since such a waste filter is treated as industrial waste, a large amount of industrial waste is generated when all the filters are replaced, and reduction of the amount of waste has been an issue in facilities such as thermal power plants.

  Therefore, in recent years, a method has been proposed in which dust adsorbed on a filter is removed to eliminate clogging and the filter can be reused (regenerated). This makes it possible to significantly reduce the waste filter and thus the industrial waste. As a method for regenerating the filter, specifically, a method of directly tapping the filter, a method of injecting high-pressure air into the filter, a method of ultrasonically cleaning the filter in water, a method of sucking dust adhering to the filter, etc. It has been known. For example, as a method for sucking dust adhering to a filter, Patent Document 2 discloses a configuration in which an attachment portion for sucking dust is attached to the suction side of a filter unit and suction force is applied by suction force applying means.

JP 2009-154141 A JP 2004-036447 A

  Among the filter regeneration methods described above, the method of directly tapping the filter requires only a tool for tapping the filter, so that no special device or the like is necessary, and the merit in terms of cost is extremely great. However, since this method is performed manually by an operator, it takes a considerable amount of time to remove all of the enormous number of filters. In addition, since the worker performs it manually, the removal effect is likely to vary, and when the filter is struck, dust is scattered around the filter, which may cause contamination of the work site and deterioration of the work environment for the worker.

  In the method of injecting high-pressure air into the filter, dust that has adhered to the filter surface can be easily removed, but it is difficult to remove dust that has entered the filter. For this reason, the dust removal effect cannot be sufficiently obtained only by the injection of high-pressure air. In the method of ultrasonically cleaning the filter in water, although highly efficient dust removal is possible, it takes a considerable time to dry the filter after cleaning. Therefore, when this method is applied to a pre-filter, it is necessary to stop the operation of the power generation equipment and perform regeneration (dust removal work). May occur. Although it is possible to prepare the same number of prefilters and regenerate them alternately, it is not practical in view of the cost of purchasing and storing a large number of prefilters.

  Moreover, in the method of adsorbing dust adhering to a filter (pre-filter) as in Patent Document 2, it is not necessary to stop the operation because dust can be removed during operation of the facility, and there is an excellent advantage in terms of operation. However, when sucking dust during operation of the equipment, the suction pressure at the suction port is negative. Therefore, in order to produce the same suction effect as atmospheric pressure, a suction force with a larger negative pressure is required. Is required. Therefore, it is essential to increase the size of the suction force applying means, and the cost required for the apparatus becomes enormous. For this reason, even the method as disclosed in Patent Document 2 has a problem in terms of cost. Further, if the suction force applying means is enlarged, it cannot be made portable, so it becomes a fixed installation type. Then, when the work is performed with the filter installed at the intake port, the flexible hose (suction hose) from the suction force applying means to the mounting portion becomes long, and handling becomes very difficult. In addition, it is conceivable that the suction force applying means further increases in size in order to cover the pressure loss due to the lengthening of the suction hose.

  In view of such problems, the present invention can remove the dust and regenerate the filter in a short time and with high efficiency without increasing the cost and increasing the size of the apparatus. It is an object of the present invention to provide a filter regeneration device capable of reducing the above.

  In order to solve the above problems, a typical configuration of a filter regenerating apparatus according to the present invention is a filter regenerating apparatus that removes dust adsorbed inside a bag-shaped filter having an opening and makes the filter reusable. The filter is made of a net-like member, and the filter is applied from above with the filter opening facing downward, and the filter hitting portion for hitting the filter from the inside and the lower portion of the filter hitting portion are supported. A frame, an outer frame that supports the inner frame so as to vibrate, a vibration mechanism that vibrates the inner frame, a hopper that is disposed below the outer frame and collects dust, and dust removal that is connected to the hopper and sucks air in the hopper And a device.

  According to the above configuration, when the inner frame vibrates by the vibration mechanism, the filter hitting portion supported by the inner frame also vibrates, and the filter hitting portion made of the mesh member and the filter collide with each other. Due to this collision, the filter is hit by the filter hitting portion, and the dust adsorbed on the filter falls due to the hit impact. Thereby, dust is removed from the filter in a short time and with high efficiency, the clogging is eliminated, and the filter can be reused (regenerated). Since the work is completed in a short time, it can be processed little by little, and regeneration can be performed without stopping the power generation equipment. In addition, since the filter can be regenerated and used, it is possible to reduce industrial waste. In addition, since the filter regeneration device is small and has a simple configuration, it can be easily moved and installed, and does not cause an increase in cost. And the dust which fell from the filter is collected by a hopper, and is attracted | sucked by the dust removal apparatus connected to this hopper. For this reason, scattering of dust to the surroundings can be suppressed, and contamination of the work site and deterioration of the work environment of the worker can be reduced.

  The filter regeneration device may further include a rotation shaft disposed so as to pass through the outer frame below the inner frame, and a cam attached to the rotation shaft to vibrate the inner frame in the vertical direction. According to this configuration, by rotating the rotating shaft and rotating the cam, in addition to the lateral vibration by the vibration mechanism, the vibration in the vertical direction can be applied to the inner frame and the filter hitting portion supported thereby. . Therefore, the dust removal effect of the filter regeneration device can be further enhanced.

  The filter regeneration device may further include an amplitude adjustment unit that adjusts the amplitude of the inner frame by regulating the vibration range of the inner frame. As a result, the amplitude of the inner frame is adjusted to control the vibration state of the filter hitting portion, so that the filter can be hit with certainty.

  Said hopper has a depositing part which accumulates dust in the lower part, and it is good for a dust removing device to be connected to a hopper above the depositing part. According to such a configuration, dust having a large weight descends in the hopper due to gravity and accumulates in the accumulation portion, and only the dust having a small weight is sucked into the dust removing device together with the air in the hopper. Therefore, it is possible to reduce the amount of dust sucked into the dust removing device, and to suppress the occurrence of clogging in the dust removing device.

  The filter regeneration device may further include an injection unit that injects air from the outside of the filter. Thereby, the dust adsorbed on the filter can be removed by the pressure of the air jetted from the jetting means. Therefore, the dust removal effect by the filter regeneration device can be further improved.

  The filter regeneration device may further include a cover attached to the outer frame so as to cover the filter attached to the filter hitting portion. Thereby, since the filter is shielded by the cover, the dust detached (removed) from the filter is not scattered around. Therefore, it is possible to improve the dust collection efficiency, maintain the worker's working environment in a good state, and prevent contamination of the work site.

  According to the present invention, the filter can be regenerated by removing dust in a short time and with high efficiency without increasing the cost or increasing the size of the apparatus, and the operation stop time of the power generation equipment and the reduction of industrial waste can be achieved. Therefore, it is possible to provide a filter regeneration device capable of performing

It is a figure explaining schematic structure of the filter used as a candidate for processing. It is a figure explaining the schematic structure of the filter reproduction | regeneration apparatus concerning 1st Embodiment. It is a figure explaining the schematic structure of the filter reproduction | regeneration apparatus concerning 1st Embodiment. FIG. 4 is a side view of FIG. 3. It is a figure explaining rotation of a cam. It is a figure explaining the amplitude adjustment of the inner frame by an amplitude adjustment part. It is a figure explaining the schematic structure of the filter reproduction | regeneration apparatus concerning 2nd Embodiment. It is a figure explaining the schematic structure of the filter reproduction | regeneration apparatus concerning 3rd Embodiment. It is a figure explaining an Example and a comparative example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Filter unit)
In order to facilitate understanding, first, a filter to be processed by the filter regeneration device of the present embodiment will be described. FIG. 1 is a diagram illustrating a schematic configuration of a filter to be processed. FIG. 1A is a perspective view of the filter, and FIG. 1B is a top view of FIG. As shown in FIGS. 1A and 1B, the filter unit 102 includes a filter 104 and a frame 106, and this filter 104 is a filter to be processed by a filter regeneration device described later.

  In the present embodiment, the filter 104 is configured by four connected filters 104a, 104b, 104c, and 104d. As materials for the filters 104a to 104d, synthetic fibers such as nonwoven fabric, glass fibers, and the like can be suitably used. The filters 104a to 104d are formed in a bag shape having a mountain shape in the depth direction of an intake port (not shown), and have openings 104e, 104f, 104g, and 104h, respectively. Further, the filters 104a to 104d are partially stitched in the depth direction at a substantially central portion in the height direction so that the bag does not spread too much.

  The filters 104 a to 104 d are attached to the frame body 106. The frame body 106 is made of, for example, an aluminum alloy, and includes an outer peripheral portion 106a and bars 106b, 106c, and 106d provided in the height direction inside the outer peripheral portion 106a. And the filter 104 is attached to the frame 106 so that the opening parts 104e-104h may be arrange | positioned between these outer peripheral part 106a and the crosspieces 106b-106d.

  The filter unit 102 is attached to the intake port so that the filter 104 is disposed inside the intake port. Thus, the intake air passes between the outer peripheral portion 106a and the crosspieces 106b to 106d and through the openings 104e to 104h, and the dust contained therein is adsorbed inside the filters 104a to 104d.

  In the present embodiment, the filter 104 includes four bag-shaped filters 104a to 104d. However, this number is an example and is not limited. Further, the number of bars provided on the frame body 106 is not limited, and it goes without saying that the number of bars should be changed according to the number of bag-like filters.

(First embodiment)
2 and 3 are diagrams illustrating a schematic configuration of the filter regeneration device according to the first embodiment. In particular, FIG. 2 shows a state in which the inner frame and the filter hitting portion are removed from the filter regeneration device, and FIG. 3 shows a state in which they are attached to the filter regeneration device. The filter regeneration device 100 according to the first embodiment shown in FIGS. 2 and 3 (hereinafter, abbreviated as the regeneration device 100) removes dust adsorbed on the inside of the filter 104 so that the filter 104 can be reused. To do.

  In the reproducing apparatus 100, the filter 104 of the filter unit 102 described above is held by the filter hitting unit 110. The filter hitting portion 110 is composed of mesh members 110a and 110b which are paired in an inverted V shape. As a result, as will be described later, the dust hit by the filter hitting unit 110 and dropped from the filter 104 is collected by the hopper 150 through the meshes of the mesh members 110a and 110b. Further, by arranging the mesh members 110a and 110b in an inverted V shape, they can be held along the chevron shape of the bag-like filter, and the filter 104 can be suitably hit during vibration. It becomes possible.

  In the present embodiment, four rows of filter hitting portions 110 are arranged on the inner frame 120. Since one filter hitting portion 110 has the filters 104a to 104d sewn at the center portion, two mesh members 110a and 110b are arranged in the lateral direction according to the bag shape. Then, the filter unit 102 is attached together with the frame body 106 so that the filter hitting part 110 is inserted into the openings 104e to 104h (see FIG. 1) from the upper side of the filter hitting part 110, as shown in FIG. Thus, the filter unit 102 is held by the filter hitting unit 110.

  Note that the number of columns of the filter hitting unit 110 should be changed according to the number of connected filters 104. When the filter 104 is not sewn at the center, the mesh members 110a and 110b arranged in the lateral direction may each be a single mesh member.

  FIG. 4 is a side view of FIG. For convenience of explanation, in FIG. 4, the filter hitting unit 110, and an outer frame 140 and a hopper 150 described later are indicated by phantom lines. The lower part of the filter hitting part 110 is supported by the inner frame 120 (see FIG. 2). As shown in FIG. 4, a vibration mechanism 130 that vibrates the inner frame 120 is provided below the inner frame 120. In particular, the vibration mechanism 130 of the present embodiment vibrates the inner frame 120 in the direction of the white arrow in FIG. 4, that is, in the left-right direction in FIG. As the vibration mechanism 130, a vibration motor can be preferably used. However, the present invention is not limited to this, and any device that can vibrate the inner frame 120 may be used. For example, a motor, a cam, and a crank A link mechanism combining the above can be used.

  The inner frame 120 holding the filter 104 on the filter hitting portion 110 is supported by the outer frame 140 so as to be able to vibrate, and is in the state shown in FIG. In the present embodiment, a mounting portion 140a is provided inside the outer frame 140 as shown in FIG. 2 (not shown, but it is also mounted on the surface facing the surface including the mounting portion 140a). The inner frame 120 is placed on the placing portion 140a. That is, the inner frame 120 is only placed on the placement portion 140a of the outer frame 140, and they are not fixed to each other. Therefore, the inner frame 120 placed (supported) on the outer frame 140 can vibrate.

  According to the above configuration, when the inner frame 120 vibrates by the vibration mechanism 130, the filter hitting portion 110 supported by the inner frame 120 vibrates. The filter 104d of the filter 104 will be described as an example. When the inner frame 120 vibrates toward the left side by the vibration mechanism 130, the filter hitting portion 110 is inclined to the right side. Thereby, the mesh member 110b collides with the inner surface on the right side of the filter 104d, and the filter 104d is hit by the mesh member 110b. On the other hand, when the inner frame 120 vibrates toward the right side by the vibration mechanism 130, the filter hitting portion 110 is inclined to the left side. Thereby, the mesh member 110a collides with the inner surface on the left side of the filter 104d, and the filter 104d is hit by the mesh member 110a.

  Therefore, when the filter hitting unit 110 vibrates left and right, the filter hitting unit 110 and the filter 104 repeatedly collide with each other and the filter 104 is hit by the filter hitting unit 110. Then, the dust adsorbed on the filter 104 is detached and falls into the hopper 150 due to the hit impact. As a result, dust is removed from the filter 104 in a short time and with high efficiency, and the clogging is eliminated. Therefore, the filter 104 can be reused (regenerated), and the life of the filter can be extended. .

  In the present embodiment, as shown in FIGS. 2 and 3, the outer frame 140 is provided with a handle 140 b connected to the rotation shaft 142. The rotation shaft 142 is disposed below the inner frame 120 so as to penetrate the outer frame 140, and a cam 144 that vibrates the inner frame 120 in the vertical direction is attached (see FIG. 4). Accordingly, when the handle 140b is rotated, the rotation shaft 142 connected to the handle 140b is rotated, and as a result, the cam 144 attached to the rotation shaft 142 is rotated.

  FIG. 5 is a diagram for explaining the rotation of the cam 144. The cam 144 is formed with a flat portion 144a in a shape in which a part of a disk-shaped member is cut out. As shown in FIG. 5A, when the flat portion 144a of the cam 144 is at a position facing the lower side of the inner frame 120, the inner frame 120 is at the lowest position. Then, when the cam 144 is rotated approximately 180 ° in the direction of the arrow shown in FIG. 5A, the inner frame 120 rises as shown in FIG. 5B and is supported by the inner frame 120 along with this. The filter 104 held by the filter hitting unit 110 (see FIG. 2) also rises.

  When the cam 144 is further rotated by approximately 90 ° in the direction of the arrow shown in FIG. 5B, the inner frame 120 is lifted and raised by the cam 144, and the filter hitting portion 110 and the filter 104 are further raised. At this time, the apex of the flat portion 144a is in contact with the lower side of the inner frame 120, and the inner frame 120 reaches the highest position. Then, when the cam 144 is further rotated approximately 90 ° in the direction of the arrow shown in FIG. 5C, the apex of the flat portion 144a is displaced and the inner frame 120 falls (falls), and the filter hitting portion is accordingly accompanied. 110 and the filter 104 are also lowered, and return to the position shown in FIG. At this time, due to the impact when the inner frame 120 is dropped, vertical vibration is applied to the filter hitting portion 110 and thus the filter 104, and dust adsorbed on the filter 104 is dropped due to the vibration.

  Therefore, according to the above configuration, by rotating the rotating shaft 142 and rotating the cam 144, in addition to the horizontal vibration by the vibration mechanism 130, the vertical vibration (vertical direction) can be applied to the inner frame 120. it can. As a result, the filter hitting unit 110 supported by the inner frame 120, and hence the filter 104 held thereby, vibrates and dust falls, so that the dust removing effect of the reproducing apparatus 100 can be further enhanced.

  Further, the outer frame 140 is provided with an amplitude adjusting unit 146. The amplitude adjuster 146 adjusts the amplitude of the inner frame 120 by regulating the vibration range of the inner frame 120. By adjusting the amplitude of the inner frame 120, the frequency of the filter hitting portion 110 can be adjusted. The adjustment of the amplitude may be performed so that the vibration nodes of the mesh members 110a and 110b that are elastically deformed do not come to the middle, and the antinodes of vibrations come to the tip (so that the tip vibrates most greatly). preferable. In the present embodiment, the amplitude adjusting unit 146 is a screw that penetrates the outer frame 140. As a result, the state of penetration into the outer frame 140 and thus the amplitude of the inner frame 120 can be easily adjusted simply by rotating the amplitude adjusting unit 146.

  FIG. 6 is a diagram for explaining the amplitude adjustment of the inner frame 120 by the amplitude adjustment unit 146. As shown in FIG. 6A, when the screw that is the amplitude adjusting unit 146 is loosened, that is, when the amplitude adjusting unit 146 does not protrude into the gap 146a between the outer frame 140 and the inner frame 120, the inner frame 120 is removed. The vibration range is substantially the same as the inner width of the outer frame 140. On the other hand, as shown in FIG. 6B, when the amplitude adjusting unit 146 is completely tightened, that is, when the amplitude adjusting unit 146 protrudes into the gap 146a, the vibration range of the inner frame 120 is as follows. It is almost the same as the width. When the vibration range of the inner frame 120 is adjusted in this way, the amplitude of the inner frame 120 can be adjusted. Thereby, the vibration state of the filter hitting unit 110 can be controlled, and the filter 104 can be hit with certainty.

  In the present embodiment, only the state in which the amplitude adjusting unit 146 is completely tightened (FIG. 6B) and the state in which the amplitude adjusting unit 146 is loosened (FIG. 6A) are illustrated, but the present invention is not limited to this. Needless to say, it is also possible to adjust in an intermediate state between 6 (a) and FIG. 6 (b).

  In addition to the members described above, L-shaped legs 148 are connected to the lower four corners of the outer frame 140. A roller 148 a is attached to the lower surface of the L-shaped bent portion of the foot 148. Thereby, the reproducing | regenerating apparatus 100 can be moved easily. On the other hand, a ground shaft 148b is penetrated in the vicinity of the end of the foot 148 on the side where the outer frame 140 is not connected. A handle 148c is connected to the upper end of the grounding shaft 148b, and a grounding part 148d is connected to the lower end.

  With the above configuration, by rotating the handle 148c after moving the playback device 100 to a desired location, the ground shaft 148b and the ground portion 148d connected thereto are rotated to ground the ground portion 148d. The position of can be fixed. Therefore, movement due to vibration during operation of the playback apparatus 100 can be suppressed. Further, by further rotating the handle 148c after the grounding portion 148d is grounded, the foot 148 and thus the outer frame 140 can be raised, and the height of the playback device 100 can be adjusted.

  As described above, the dust falling from the filter 104 is collected by the hopper 150 disposed below the outer frame 140. The hopper 150 is connected to a duct 160 a of the dust removing device 160. That is, the hopper 150 is connected to the 160 via the duct 160a, and the air in the hopper 150 is sucked by the dust removing device 160, and the dust collected in the hopper 150 is sucked together with the air. As a result, dust can be collected efficiently, and dust can be prevented from being scattered around, and contamination of the work site and deterioration of the work environment of the worker can be reduced.

  As described above, according to the reproducing apparatus 100 according to the first embodiment, when the inner frame 120 vibrates by the vibration mechanism 130, the filter hitting unit 110 and the filter 104 collide with each other, and the filter 104 hits the filter hitting unit 110. Dust falls due to the impact of being hit. Thereby, dust is removed from the filter 104 in a short time and with high efficiency, the clogging is eliminated, the filter 104 can be reused (regenerated), and industrial waste can be reduced. At this time, since the work is completed in a short time, it can be processed little by little, and regeneration can be performed without stopping the power plant. Further, since the reproducing apparatus 100 is small and has a simple configuration, the cost is not increased.

  Hereinafter, other embodiments of the filter regeneration device will be described. In the following description, elements having the same functions and configurations as those of the playback device 100 according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted. Differences from the playback device 100 are described below. Will be described in detail.

(Second Embodiment)
FIG. 7 is a diagram illustrating a schematic configuration of a filter regeneration device according to the second embodiment. A filter regenerator 200 (hereinafter abbreviated as a regenerator 200) of the second embodiment is different from the regenerator 100 in that the hopper is provided with a depositing portion and further provided with injection means.

  As shown in FIG. 7, a deposition unit 252 for depositing dust is provided at the lower part of the hopper 250 of the present embodiment. The depositing part 252 can be pulled out from the hopper 250. Thereby, the dust falling from the filter 104 and collected in the hopper 250 and accumulated in the accumulation unit 252 can be taken out of the hopper 250. For this reason, the reproducing apparatus 200 has a structure that facilitates internal cleaning.

  The hopper 250 is connected to a duct 160 a of a dust removing device 160 (see FIG. 2) above the accumulation unit 252. With this configuration, dust having a large weight descends in the hopper 250 due to gravity and accumulates in the accumulation unit 252, and only the dust having a small weight is sucked into the dust removing device 160 together with the air in the hopper 250. Therefore, the amount of dust sucked into the dust removing device 160 can be reduced, and the occurrence of clogging in the dust removing device 160 can be suppressed.

  In the present embodiment, the accumulation portion 252 is drawn out, but the present invention is not limited to this, and any configuration may be used as long as dust can be taken out of the hopper 250. For example, the bottom surface of the hopper 250 may be the accumulation portion 252, a hole with a lid may be provided on the bottom surface, and dust may be extracted from the hole by opening the lid.

  As a difference from the reproduction apparatus 100 of the first embodiment, the reproduction apparatus 200 of the present embodiment further includes an injection unit 270. The injection means 270 mainly includes a compressor 272, an injection nozzle 274, and a connecting pipe 270a that connects these. The compressor 272 compresses air to generate compressed air (pumps air). And the compressed air produced | generated in the compressor 272 is injected from the injection nozzle 274 through the connection pipe 270a.

  According to the above configuration, high-pressure air (air) is ejected from the ejection unit 274 to the outside of the filter 104, and dust adsorbed on the filter 104 can be removed by the pressure of the ejected air. Therefore, the dust removal effect by the reproducing apparatus 100 can be further improved.

(Third embodiment)
FIG. 8 is a diagram illustrating a schematic configuration of a filter regeneration device according to the third embodiment. As shown in FIG. 8, the filter regenerator 300 (hereinafter abbreviated as “regenerator 300”) of the third embodiment is different from the regenerator 100 in that it further includes an injection unit 370 and a cover 310.

  The injection means 370 is mainly composed of a compressor 372 and a connecting pipe 370a, and the connecting pipe 370a is connected to a compressed air supply pipe 312 provided on a cover 310 described later. Thereby, the compressed air produced | generated by being compressed in the compressor 272 is supplied in the cover 310 through the connection pipe 370a.

  The cover 310 is attached to the outer frame 140 so as to cover the filter 104 attached to the filter hitting portion 110. A compressed air supply pipe 312 is disposed above the cover 310. One end of the compressed air supply pipe 312 is fixed to the side surface of the cover 310, and the other end penetrates the other side surface of the cover 310 and is exposed to the outside of the cover 310 and connected to the connecting pipe 370a. The compressed air supply pipe 312 is connected with four branch supply pipes 312a extending in a direction substantially perpendicular thereto. Although not drawn in the drawing, a plurality of ejection holes for ejecting high-pressure air are provided at positions facing the filter 104 of the branch supply pipe 312a.

  According to the above configuration, when the compressor 372 is operated, high-pressure air passes through the connection pipe 370a and the compressed air supply pipe 312 and is jetted from the jet holes of the branch supply pipe 312a. Thereby, since it is not necessary for a worker to manually inject high-pressure air, labor during operation can be reduced.

  When the filter 104 is shielded by the cover 310, the space in the vicinity of the filter 104 is substantially blocked from the external space. For this reason, the dust detached (removed) from the filter 104 by the injection of high-pressure air does not scatter around. Therefore, it is possible to improve the dust collection efficiency, maintain the worker's working environment in a good state, and prevent contamination of the work site.

(Example)
Hereinafter, the dust removal effect of the filter by the regenerator of the above-described embodiment will be described using examples and comparative examples. FIG. 9 is a diagram illustrating an example and a comparative example. In addition, the data of Example and Comparative Examples 1 to 4 shown in FIG. 9 uses the average value of the n number of filters 104 to be dust-removed as 10 in all examples.

  In the example shown in FIG. 9, dust is removed by injecting high-pressure air by the injection means 270 using the regenerator 200 of the second embodiment. In Comparative Example 1, dust was removed manually using a futon tapping. In Comparative Example 2, dust was removed by jetting high-pressure air in addition to manual work by hitting the futon. In Comparative Example 3, dust was removed by sucking dust in addition to the manual work by hitting the futon. In Comparative Example 4, dust was removed by jetting high-pressure air and sucking dust in addition to manual work by hitting the futon.

  Comparing the examples and Comparative Examples 1 to 4, it can be seen that in the Examples, the working time can be greatly reduced to 1/2 to 1/3 of Comparative Examples 1 to 4. Further, focusing on the difference in weight before and after the dust removal process, that is, the amount of removed dust (removal amount), the embodiment greatly exceeds the weight of Comparative Examples 1 and 2, and thus efficient dust removal is possible. I can understand. Compared to Comparative Example 3, the weight difference is about the same, but the working time is halved, so that it can be seen that the working efficiency can be improved by using the regenerator 200 as in the example. Compared to Comparative Example 4, although the maximum value of the weight difference is slightly smaller in the Example, the advantage can be found in the working time, and if the working time of the Example is comparable to that of Comparative Example 4, the Example is better. It is estimated that a large weight difference can be obtained.

  Note that, in any of the above-described examples and Comparative Examples 1 to 4, the amount of dust removal is affected by the season and weather during the work. Specifically, since dust is difficult to detach from the filter 104 when it is moist, it is preferable that the dust be in a dry state during work. Therefore, it is preferable to avoid the dust removal operation in high humidity seasons and weather conditions, that is, during the rainy season or rainy weather.

  Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used for a filter regeneration device that removes dust adsorbed on the inside of a bag-like filter having an opening and enables reuse of the filter.

DESCRIPTION OF SYMBOLS 100 ... Reproduction | regeneration apparatus, 102 ... Filter unit, 104 ... Filter, 104a ... Filter, 104b ... Filter, 104c ... Filter, 104d ... Filter, 104e ... Opening, 104f ... Opening, 104g ... Opening, 104h ... Opening, 106 ... Frame body, 106a ... Outer peripheral part, 106b ... Cross, 106c ... Cross, 106d ... Cross, 110 ... Filter hitting part, 110a ... Net-like member, 110b ... Net-like member, 120 ... Inner frame, 130 ... Vibration mechanism, 140 ... Outer frame, 140a ... mounting portion, 140b ... handle, 142 ... rotary shaft, 144 ... cam, 144a ... flat portion, 146 ... amplitude adjusting portion, 146a ... gap, 148 ... foot, 148a ... roller, 148b ... ground shaft, 148c ... handle, 148d ... grounding part, 150 ... hopper, 160 ... dust remover, 160a ... duct, 200 ... Raw device, 250 ... hopper, 252 ... deposition unit, 270 ... injection means, 270a ... connecting pipe, 272 ... compressor, 274 ... injection nozzle, 300 ... regenerator, 310 ... cover, 312 ... compressed air supply pipe, 312a ... branch Supply pipe, 370 ... injection means, 370a ... connecting pipe, 372 ... compressor

Claims (6)

A filter regeneration device that removes dust adsorbed inside a bag-shaped filter having an opening and makes the filter reusable,
A filter striking portion made of a net-like member, which is applied from above with the filter facing the opening downward, and strikes the filter from the inside;
An inner frame that supports a lower portion of the filter hitting portion;
An outer frame that supports the inner frame so as to vibrate;
A vibration mechanism for vibrating the inner frame;
A hopper disposed below the outer frame and collecting the dust;
A dust remover connected to the hopper and sucking air in the hopper;
A filter regeneration apparatus comprising: A rotating shaft arranged to penetrate the outer frame below the inner frame;
A cam attached to the rotating shaft and vibrating the inner frame in the vertical direction;
The filter regeneration device according to claim 1, further comprising:   3. The filter regeneration device according to claim 1, further comprising an amplitude adjusting unit that adjusts an amplitude of the inner frame by regulating a vibration range of the inner frame. 4. The hopper has a depositing part for depositing the dust at a lower part thereof,
The filter regeneration device according to any one of claims 1 to 3, wherein the dust removing device is connected to the hopper above the accumulation portion.   The filter regeneration device according to any one of claims 1 to 4, further comprising injection means for injecting air from the outside of the filter.   The filter regeneration device according to claim 5, further comprising a cover attached to the outer frame so as to cover the filter attached to the filter hitting portion.

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