JP2016068000A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device for removing stacked dust on the filtration surface of a dust collection filter where the number of a driving system component for scanning a suction nozzle can be reduced and high reliability can be inexpensively realized for a long term even when the frequency of maintenance is reduced.SOLUTION: In a filter device comprising: a lifting member collecting dust on the filtration surface of a dust collection filter vertically erected to a rectangular casing composed of right and left side plates, a top plate and a bottom plate and reciprocating in a vertical direction by a drive motor for removing the dust on the filtration surface; and a suction nozzle reciprocating in a horizontal direction by a drive mechanism provided at the lifting member, a wire connecting the top plate of the rectangular casing and the drive motor is provided as a supporting point of a guide sheave disposed at the lifting member and the lifting member is reciprocated in a vertical direction by winding or rewinding the wire with the drive motor.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a filter device for enabling a filter to be used for a long time by sucking and removing dust accumulated on the surface of the dust collection filter.

  For example, various buildings such as office buildings, underground malls, factories, and structures such as trains are provided with a filter device that purifies air and removes dust. In recent years, extremely fine dust has increased, and interest in air purification, including air conditioners in ordinary households, has only increased.

  As such air conditioning equipment, Japanese Patent Application Laid-Open No. 2010-201364 (Patent Document 1) proposes an apparatus technology for removing dust adhering to a dust collection filter. Hereinafter, the operation mechanism in this type of apparatus will be described with reference to FIG. FIG. 1 is a schematic diagram transparently showing some components of the apparatus by broken lines in order to explain the operation principle of the apparatus. First, the dust collecting filter 13 is attached to the rectangular casing 11. In an actual apparatus configuration, the casing 11 includes a back plate in addition to the top plate, the bottom plate, and the left and right side plates, and the dust collecting filter 13 is airtightly attached to a rectangular opening formed in the back plate. However, in this specification, only the main part is shown, and details may be omitted. On one filtration surface of the dust collection filter 13, that is, on the upstream side in the ventilation direction for collecting dust, a suction nozzle 15 for sucking and removing dust from the suction port, and the suction nozzle 15 can be moved in the left-right direction. And a horizontal beam member 17 that is held movably in the vertical direction of the casing 11 and a left-right moving drive means for moving the suction nozzle 15 in the left-right direction. The left / right movement drive means is composed of a lateral feed motor 19 housed in the transverse beam member 17 and a lateral movement roller chain 21 (indicated by a two-dot chain line). The roller chain is attached to the lateral feed motor 19. The drive sprocket (not shown) is wound around the sprocket and a driven sprocket 23 disposed on the left side with a predetermined distance between the axes. By rotating the transverse motor 19 in a fixed direction, the suction nozzle 15 and the guide member 25 attached thereto are reciprocated in the left-right direction in cooperation with the left-right moving roller chain 21. Yes.

  Here, with reference to FIG. 2, the detailed mechanism in which the suction nozzle reciprocates left and right in the above-described cross beam member 17 will be described. FIG. 2 shows the driven sprocket 23 described above, a guide member 25 attached integrally to the suction nozzle 15, a long hole 27 provided in the guide member 25, and a support pin 29 fitted in the long hole 27. It is a diagram for demonstrating a cooperation state with the roller chain 21 for right-and-left movement. First, the suction nozzle 15 and the guide member 25 (not shown) can move the support pin 29 up and down between a groove (not shown) provided in the suction nozzle and a long hole 27 opened in the guide member 25. It is inserted in a state. This support pin 29 is fixed to one point of the lateral movement roller chain 21, and when the roller chain 21 is fed in the direction of arrow A by the rotation of the lateral feed motor 19, the guide member 25 (and The suction nozzle (not shown) is moved to the left. During this time, in the revolving motion of the lateral movement roller chain 21, the support pin 29 moves leftward while remaining at the upper end of the long hole 27, and then pivots around the peripheral surface of the driven sprocket 23 from top to bottom. Turn to the right. During this time, the support pin 29 fixed to the lateral movement roller chain 21 is displaced from the top to the bottom by a distance corresponding to the approximate diameter of the driven sprocket 23 and the distance corresponding to the extending direction of the long hole 27, but the suction nozzle 15 The guide member 25 operates by being influenced only by the movement of the support pin in the left-right direction. As described above, in the apparatus of FIG. 1 described above, the guide roller 25 and the suction attached to the guide member 25 are obtained by rotating the lateral movement roller chain 21 once by the rotation of the lateral feed motor 19 in the same direction. The nozzle 15 substantially reciprocates on the left and right straight line that is the extending direction of the cross beam member 17. In order to facilitate the understanding of the following description, in the present application specification, the above-described support pins and long holes fixed to the roller chain are used to change the rotational motion of the roller chain into a substantial reciprocating motion. The mechanism is called a support mechanism.

  On the other hand, in the apparatus configuration shown in FIG. 1, the upward movement drive means 31 is provided with a longitudinal feed motor 33 as a drive source in which an electric motor and a speed reducer are combined together and provided with a brake function. The motor 33 is provided with two roller chains that rotate directly and integrally with the rotating shaft thereof, that is, on the right side of the casing 11, and the roller chain 37 a for moving up and down wound around the sprocket 35 a (one point). A transmission roller chain 37b (shown by an alternate long and short dash line) wound between a sprocket 35b provided on the left side of the casing 11 and the sprocket 35b and the left side which are indirectly driven. It is configured to cooperate with a total of three roller chains of a roller chain 37c for raising and lowering movement (shown by a one-dot chain line) wound around a sprocket 35c provided at the lower part. Even in such an upward movement drive means 31, the vertical beam motor 33 is rotated in the same direction so that the horizontal beam member 17 is reciprocated in the vertical direction at each point of the vertical movement chains 37 a and 37 c. The same support pins 29a and 29b as in FIG. 2 are provided, and interlocking with the long holes 39a and 39b opened at both ends of the cross beam member 17 is achieved. With this series of configurations, the up-and-down moving roller chain 37a that directly receives the rotation of the vertical feed motor 33 bears the vertical reciprocation of the cross beam member 17 on the right side of the apparatus by the support pin 29a. Is transmitted to the up-and-down moving chain 37c via the transmission roller chain 37b and the sprocket 35b, and at the same time, the roller chain 37c bears the vertical reciprocating motion of the horizontal beam member 17 on the left side of the apparatus by the support pin 29b.

  In the technique of this Patent Document 1, the suction nozzle provided in the horizontal beam member is scanned in the left and right direction by the horizontal feed motor, and after the suction nozzle returns to the starting point, the horizontal beam member is moved upward by the vertical feed motor, and this is sequentially repeated. By returning, the entire surface of the dust collection filter is cleaned until it reaches the top, and the lower part of the filter is moved down by the weight of the horizontal beam member to return to the initial state (see FIG. 1). 4).

  Furthermore, Japanese Utility Model Registration No. 3021210 (Patent Document 2) describes in detail the mechanism related to the reciprocating movement in the vertical and horizontal directions of the suction nozzle in this type of apparatus. The technology of the Patent Document 2 pays attention to the fact that the weight of the driven body in the vertical direction (corresponding to the “cross beam member” referred to in Patent Document 1) becomes the load load of the driving motor, and compares various driving methods. (FIGS. 1 and 2 attached to the gazette of the document 2). In the conventional driving method, separate reversible motors are used for horizontal driving in the left-right direction and vertical driving in the vertical direction, respectively, and each motor is rotated forward and backward (FIG. 1 of the publication), and one motor is combined into one. A system that rotates only in the direction and uses the support mechanism shown in FIG. 2 of the specification of the present application provided for the description of Patent Document 1 is described. In each of these two conventional methods, the weight of the driven body becomes the motor load, a motor with a large rating is required, and the load when the driven body is raised and lowered is significantly different. The point that caused the failure was pointed out and disclosed.

  In the technique of Patent Document 2, in order to obtain a weight balance related to the movement of the driven body in the vertical direction, a chain or rope suspended on the upper sprocket or pulley is used to provide a predetermined weight at both left and right ends of the driven body. It is disclosed that weights can be arranged to reduce motor load and failure (see [0010], [0019], [FIG. 3] to [FIG. 5]).

JP 2010-201364 A (claims, [0023] to [0036], [0046], [0054], [FIG. 1] to [FIG. 3], [FIG. 5], etc.) Utility Model Registration No. 3030990 (Claims for Utility Model Registration, [0003], [0005] to [0011], [0019], [FIG. 1] to [FIG. 5], etc.)

  As described in the background art, various techniques are known for cleaning a filter in which dust is collected in a filter device when the device is in operation. In cleaning, the suction nozzle is scanned in two directions within the filter surface of the filter, but conventionally, a mechanism for transmitting the rotation of the drive motor with a roller chain has been the mainstream. For this reason, various problems still unsolved remain. As an example, as pointed out in Patent Document 2, there is a case where the chain transmission mechanism causes elongation of the chain itself over time, and the deflection of the roller chain may lead to damage to other device parts or generation of abnormal noise. In order to reduce this bending, for example, in the technique of Patent Document 1, a plurality of sprockets are arranged within the dotted line marked with B in FIG. 1, but the number of parts is large and a long time is required for maintenance.

  Further, the transverse beam member disclosed in Patent Document 1 is loaded with the weight of the second drive motor, the suction nozzle, etc., and the base material in the vicinity of the long holes 39a and 39b provided in the transverse beam member is deteriorated, and the three roller chains. The frequency of deflection adjustment (37a, 37b and 37c in FIG. 1) is relatively high. In this regard, the load can be reduced by adopting the counterbalance suggested in each background art. However, the horizontal beam member or the driven body (hereinafter, in the present invention, the components including the suction nozzle are comprehensively moved up and down. A roller chain is indispensable for the drive transmission for raising and lowering), and there is a problem that it is extremely difficult to eliminate the endless chain. As an alternative to this roller chain, each literature technique suggests the use of a metal wire (hereinafter abbreviated as “wire”). However, in an apparatus configuration that requires at least an endless drive transmission mechanism, the wire itself is stretched. There was a problem that it was impossible to deal with.

  The present invention has been made in view of the background art described above, and is a filter device for removing dust accumulated on the filtration surface of a dust collection filter, which reduces the number of drive system parts for scanning a suction nozzle. An object of the present invention is to provide an apparatus that can achieve high reliability over a long period of time even if the maintenance frequency is reduced.

  In order to achieve this object, according to the configuration of the filter device according to the present application, the dust is collected on the filtration surface of the dust collection filter installed upright on the rectangular casing composed of the left and right side plates, the top plate, and the bottom plate. And a lifting member that reciprocates in the vertical direction by a drive motor, and a suction nozzle that reciprocates in the left-right direction by a drive mechanism provided in the lifting member. In the filter device, a wire connecting the top plate of the rectangular casing and the drive motor described above is provided with a guide sheave provided on the lift member as a fulcrum, and the drive motor winds or rewinds the wire. Accordingly, the above-described elevating member reciprocates in the vertical direction.

  In carrying out the present invention, it is preferable that the above-described guide sheave is provided in the vicinity of both ends of the above-described lifting member.

According to the filter device of the present invention, it is a filter device for removing dust accumulated on the filtration surface of the dust collection filter by adopting such a device configuration, and for scanning the suction nozzle in the vertical direction. It is possible to reduce the number of parts of the drive system, to reduce the frequency of maintenance, and to provide a device that can realize high reliability over a long period of time at a lower price.
Further, in the above-described preferred embodiment in which the guide sheave is provided in the vicinity of both ends of the elevating member, stable reciprocation in the vertical direction can be achieved without providing guard rails or the like on the left and right side plates. .

It is typical explanatory drawing which shows a part of conventional filter apparatus in order to explain background art. In order to explain the background art and the present invention, it is an explanatory view showing a support mechanism in which the cross beam member of FIG. 1 and the elevating member of FIG. FIG. 2 is a schematic explanatory view similar to FIG. 1 for explaining one embodiment according to the present application. FIG. 4 is a schematic explanatory view similar to FIG. 3 for explaining another embodiment according to the present application.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, components having functions similar to those of the constituent components described as the background art are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 3 is an explanatory view as seen from the upstream side in the ventilation direction of the filter device of the present invention, as in FIG. 1. In this apparatus configuration, as in the background art, the dust collecting filter 13 is erected on a rectangular casing 11 composed of a right side plate 11a, a left side plate 11b, a top plate 11c and a bottom plate 11d, and a back plate (not shown). It is installed. In general, this type of dust collection filter has a structure that can maintain flatness so as not to be deformed by wind pressure, etc., and a material such as a metal mesh or punching metal having a relatively large aperture ratio is used for the purpose of improving dust collection efficiency. What planted various synthetic fibers is known.

  In order to clean the filtration surface of the dust collection filter 13, guide sheaves 43a and guide sheaves 43b are provided in the vicinity of both ends of the lifting means 41 in which the suction nozzle 15 is housed together with the guide member 25 similar to the conventional one. Yes. For this guide sheave, known parts can be used, but it is preferable that the guide sheave has a pincushion-like or drum-like general shape as a fulcrum of the wire, and a groove or a depression is provided on the rotating circumferential surface thereof. By adopting the guide sheave having such a shape, the contact portion with the wire does not cause a large displacement within the circumferential surface, and it is suitable for preventing the wire from falling off. Moreover, it is good to use the material made from stainless steel excellent in durability and rust prevention property as a material of a wire.

  In the apparatus configuration of FIG. 3, a wire 47 (shown by an alternate long and short dash line) having a wire fixing jig 45 attached to the inner surface of the top plate 11 c at the upper left of the rectangular casing 13 as one end is attached. The other end of the wire is fixedly attached to the rotating shaft of the drive motor 49 disposed on the upper right side of the casing 11 via the guide sheave 43b and the guide sheave 43a serving as fulcrums. The mounting position of the drive motor 49 illustrated in the figure is the position where the suction nozzle 15 (specifically, the upper end of the suction port to which the suction force is applied) attached to the elevating means 41 reaches the upper end of the dust collection filter 13 (the upper end position). The guide sheaves 43a and 43b provided in the means 41 are fixedly arranged above the upper end position of the dust collecting filter 13 so that the guide sheaves 43a and 43b can be wound up and moved upward. Moreover, in this upper end position and the lower end position when the suction nozzle 15 (specifically, the lower end of the suction port to which the suction force reaches) reaches the lower end of the dust collecting filter 13, each end position is detected. The driving motor 49 is stopped and reversed by a method of arranging the sensor (hereinafter, simply referred to as a detection control mechanism).

  By providing each component illustrated in FIG. 3, the drive motor 49 is operated to wind the wire 47, and the wire length reaching the wire fixing jig 45 with the guide sheaves 43 a and 43 b as fulcrums is reduced. Due to the principle of a moving pulley, the elevating member 41 is raised with a smaller torque than in the prior art. Thereafter, the detection control mechanism described above detects that the elevating member 41 has reached the upper end position, and reversely drives the motor so that the elevating member 41 starts to move downward according to the increasing wire length. Thereafter, the operation of the detection control mechanism at the lower end position again turns the winding of the wire 47 by the drive motor 49, and the elevating member 41 is re-raised. It is configured to move. During this time, as long as the contact with the guide sheaves 43a and 43b is maintained even if a dimensional change with time such as the extension of the wire 47 on which the elevating member 41 is suspended occurs. The reciprocating movement of the member 41 in the vertical direction can be normally maintained.

  Next, a mechanism in which the suction nozzle 15 disposed in the elevating member 41 reciprocates in the left-right direction will be described with reference to FIG. In this apparatus configuration, it is not necessary to dispose a drive motor specific to the reciprocating movement in the left-right direction, similarly to the support mechanism technique disclosed as the prior art according to Patent Document 2 described above (see FIG. 2 of the publication). An apparatus configuration is illustrated. First, as shown in FIG. 3, the elevating member 41 is attached integrally with the driven sprocket 51 a and the suction nozzle 15 in the same manner as the support mechanism described with reference to FIG. A guide member 25, a support pin (not shown) fixedly attached to one point of a lateral movement roller chain 53 (two-dot chain line), and a driven sprocket 51b on the opposite side of the elevating member 41 from the driven sprocket 51a. It is arranged. Here, a relatively small-diameter sprocket 55 is provided coaxially with the driven sprocket 51 a, and a roller chain 59 (two-way) is provided between the sprocket 57 with a ratchet mechanism fixedly disposed at the left end of the elevating member 41 and the sprocket 55. A dotted line) is wound. As this sprocket 57 with a ratchet mechanism, for example, a sprocket that meshes with a rack 61 provided on the upper left side of the left side plate 11b and rotates only counterclockwise in the figure and idles clockwise. The “rack” referred to here is, for example, one surface of a metal flat plate with teeth that are equally spaced, and the sprocket is rotated by meshing with the teeth of the sprocket 57 with a ratchet mechanism. The structure which performs is illustrated. In the specification of the present application, a mechanism that uses a combination of a rack and a sprocket with a ratchet mechanism to move the elevating member once in the left and right directions by a predetermined distance while the elevating member reciprocates in the up and down direction is laterally fed. This is called a mechanism.

  Hereinafter, the relationship between the above-described reciprocating movement of the elevating member 41 in the vertical direction and the reciprocating movement of the suction nozzle 15 provided on the member 41 in the left-right direction will be described in detail. In this description, the time point when the suction nozzle 15 shown in FIG. 3 is located at the lower left corner of the dust collection filter 13 is set as a starting point. When the drive motor 49 winds the wire 47 from this starting point, the elevating member 41 starts to move upward. At this time, since the sprocket 57 with a ratchet mechanism is not rotated, the suction nozzle 15 is moved upward by the ascending / descending member 41 without changing the position in the left-right direction, and sucks and removes the dust in the belt-like region. . Eventually, when the sprocket 57 with the ratchet function rises to a position where it engages with the rack 61, the sprocket 57 rotates counterclockwise to drive the roller chain 59 counterclockwise, and the sprocket 55 and the driven sprocket provided coaxially. Rotate 51a counterclockwise. This rotation turns the roller chain 53 for left / right movement counterclockwise, and a support pin (not shown) fixedly supported by the roller chain 53 and fitted in the elongated hole 27 is moved in the left / right direction. Further, the guide member 25 and the suction nozzle Move 15 to the right.

  At this time, the movement of the suction nozzle 15 in the left-right direction based on the support mechanism with reference to FIG. 2 described above is performed simultaneously with the upward movement while the sprocket 57 with the ratchet mechanism is engaged in the distance region from the lower side to the upper side of the rack 61. Arise. Thereafter, when the upper end position is reached, the detection mechanism operates, the reverse rotation of the drive motor 49 and the rewinding of the wire 47 start, and the elevating member 41 starts to descend. While the rewinding of the drive motor 49 starts and the meshing of the sprocket 57 with the ratchet mechanism and the rack 61 is maintained, the sprocket 57 idles and acts on each member of the support mechanism system, that is, the suction nozzle It is designed not to move in the left-right direction.

  Next, when the lower end position described above is reached, the detection mechanism reverses the drive motor 49 and the wire 47 is wound up so that the elevating member 41 starts to rise. The suction nozzle 15 sucks and cleans the belt-shaped region without changing the left and right positions even when the ascending. Subsequently, when the sprocket 57 with a ratchet mechanism provided at the end of the elevating member 41 is lifted to a position where it engages with the rack 61, the vertical reciprocation is completed at least once as seen from the starting point described above, and suction is performed. The movement of the nozzle 15 in the right direction is completed once.

  During such a single reciprocating movement in the vertical direction, the distance that the suction nozzle 15 moves in the left-right direction is the sprocket 57 with a ratchet mechanism and the rack 61, and the driven sprocket that cooperates with the roller chain 59. The gear ratio of 51a and the sprocket 55 and the numerical conditions of each component incorporated in the support mechanism can be arbitrarily designed. However, by setting the moving distance corresponding to the horizontal dimension of the suction port of the suction nozzle 15, suction leakage on the surface of the dust collection filter 13 due to a series of operation cooperation can be avoided. In addition, the above operation is repeated so that the right end portion of the suction port of the suction nozzle reaches the right end portion of the dust collecting filter 13, so that the support pin moves upward in the long hole 27 by the support mechanism described above. Various configurations of the driven sprocket 51a, the driven sprocket 51b, and the lateral movement roller chain 53 are selected. With such a design, the suction nozzle 15 moves to the left while repeating the up and down reciprocating motion by interlocking the series of components described above, and returns to the left end of the dust collection filter 13, so that Cleaning is complete.

  The apparatus configuration example as one embodiment of the present invention based on FIG. 3 has been described above, but the present invention is not limited to the above-described embodiment. For example, as an application example of the present invention, the case where two guide sheaves 43 a and 43 b serving as fulcrums of the wire 47 are provided near both ends of the elevating member 41 has been described. In this apparatus configuration, the lateral feed motor 19 according to the background art shown in FIG. 1 is substantially obtained by applying the support mechanism of FIG. 2 and the lateral feed mechanism shown in FIG. 3 to the movement of the suction nozzle in the left-right direction. No need to use. This reduces the weight of the lifting member and reduces the load on the wire of the device to which the present invention is applied. For this reason, instead of the two guide sheaves described above, a guide sheave is provided only at the center of the elevating member, and the elevating member is stably reciprocated in the vertical direction by a guard rail provided on the left and right side plates. You can also

Further, in the apparatus configuration of FIG. 3, the winding direction of the drive motor is illustrated as in the drawing sheet. However, the winding direction of the drive motor can be arranged in a plane perpendicular to the drawing sheet.
Furthermore, as a configuration that stabilizes the so-called “fleet angle” (angle with respect to the drum when the wire rope is caught in the drum) on the rotation shaft of the drive motor, for example, the rotation circumference described in the sprocket 51a and the like An in-plane groove or recess may be provided.

  Further, regarding the lateral feed mechanism shown in FIG. 3, in FIG. 3, the sprocket 57 with a ratchet mechanism and the driven sprocket 51 a are interlocked via a small-diameter sprocket 55 coaxial with the driven sprocket 51 a and a roller chain 59. However, instead of this, for example, a sprocket 57 with a ratchet mechanism directly connected to the rotating shaft of the driven sprocket 51a can be used.

  In addition to this, in the apparatus configuration of FIG. 3, some of the other components normally provided in this type of apparatus are omitted for the purpose of facilitating understanding of the principle of the present invention. For example, a guide rail mechanism can be provided on the inner wall side of the side plate 11a and the side plate 11b to restrict the left and right positions of the vertical movement of the elevating means 41. The guide rail mechanism is a means for attaching wheels to both end faces of the lifting means 41 and abutting against the side plate, or as disclosed in FIG. The guide rail mechanism which controls the right-and-left position of the raising / lowering means 41 can be provided by providing separately the component covering both the top plate 11c and the bottom plate 11d, and cooperating with the said wheel.

Next, another apparatus configuration to which the present invention is applied will be described with reference to FIGS. 1 and 4 which are the same as FIGS.
In another apparatus form to which the present invention shown in FIG. 4 is applied, the wire 47 in the apparatus configuration of FIG. 3 is wound or rewound by the drive motor 49 via the guide sheave 43a, whereas the wire 47 is It is configured to be taken up by the drive motor 49 via guide sheaves 63a and 63b disposed in the casing 11. This is because, when the wire 47 is wound around the drive motor 49, the relative arrangement relationship between at least the guide sheave 43a serving as a fulcrum of the “moving pulley” and the drive motor 49 is changed by the elevating member 41 that reciprocates in the vertical direction. To do. A pair of guide sheaves 63a and 63b fixed to the drive motor 49 is preferably provided in order to prevent the winding disturbance due to the position change accompanying the operation of the apparatus, that is, to maintain the fleet angle described above. Furthermore, in order to prevent the same winding disturbance, the drive motor 49 may be disposed at the position of the lower guide sheave 63b shown in FIG. 4 to directly wind the wire 47 from the guide sheave 63a. Here, this type of apparatus is often operated in an environment exposed to wind and rain such as outdoors. In consideration of such an operating environment, when the drive motor is disposed below the casing, it can be arbitrarily suitably designed in the same manner as other members, such as waterproofing.

  The embodiments to which the present invention is applied have been described above with reference to specific device configurations. In application of the present invention, the case where the suction nozzle in the elevating member is reciprocated in the left-right direction by a known support mechanism is illustrated. However, the present invention is not limited to this. As an alternative to such a support mechanism, the driven sprockets 51a and 51b and the right and left movement roller chain 53 housed in the elevating member 41 shown in FIGS. 3 and 4 are eliminated and interlocked with a relatively small diameter sprocket 55. Drive mechanism that uses a traverse cam (a system in which a spiral threading is applied to a rod-shaped material and another rod-shaped object is pressed against this threading to change the rotational motion into a linear motion) by the gear mechanism But it ’s okay. The present invention is not limited only to these embodiments, and it is apparent that various modifications and changes can be arbitrarily and suitably performed within the scope of the object of the present invention.

  The filter device of the present invention can be used as a filter device for purifying air and removing dust.

11: (rectangular) casing,
11a: (right side) side plate, 11b: (left side) side plate, 11c: top plate, 11d: bottom plate,
13: Dust collection filter, 15: Suction nozzle, 17: Cross beam member,
19: transverse feed motor (second drive motor),
21 and 53: Roller chain for moving left and right,
23: driven sprocket, 25: guide member,
27: long hole (of guide member),
29, 29a, 29b: support mechanism,
31: Driving means for upward movement, 33: Vertical feed motor,
35a, 35b, 35c: sprockets
37a, 37c: Elevating and moving roller chain, 37b: Transmission roller chain,
39a, 39b: oblong holes,
41: lifting member,
43a, 43b: guide sheave (to be a fulcrum), 45: wire fixing jig,
47: wire, 49: drive motor, 51a, 51b: driven sprocket,
55: (relatively small diameter) sprocket, 57: sprocket with a ratchet mechanism,
59: roller chain, 61: rack, 63a, 63b: guide sheave,
A: Direction of rotation of the roller chain for moving left and right,
B: Sprocket for reducing deflection.

Claims (2)

  In order to collect dust on the filtration surface of a dust collection filter installed upright on a rectangular casing consisting of left and right side plates, top plate and bottom plate, and to remove the dust on the filtration surface, the drive motor And a suction nozzle that reciprocates in the left-right direction by a drive mechanism provided in the elevating member, and a wire that connects the top plate of the rectangular casing and the drive motor. Is provided with a guide sheave provided on the elevating member as a fulcrum, and the elevating member reciprocates in the vertical direction when the drive motor winds or unwinds the wire.   The filter device according to claim 1, wherein the guide sheave is provided in the vicinity of both ends of the elevating member.