JP2010274253A - Cleaning apparatus of portable duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus that automates cleaning operation of a portable duct. <P>SOLUTION: A large pulley of a pushing-up mechanism is rotated and at the same time advanced to the outer periphery of a duct, a small pulley is abutted on a resin sheet part of the duct and pushed into the inner peripheral side. In accordance with the rotation of the large pulley, the small pulley is made to push up the resin sheet upward. Thus, the resin sheet of the duct is automatically pushed up in order. Meantime, cleaning nozzles are arranged on the center side of a duct placing base and in a position opposing the outer periphery of the duct, of the duct placing base. The inner periphery and the outer periphery of the duct can be cleaned by jetting cleaning water from these cleaning nozzles. In addition, since the resin sheet of the duct is pushed up in order by the pushing-up mechanism, automatic cleaning is possible over the entire length of the duct. Further, the duct placing base is moved up and down by an oscillating cylinder, consequently the cleaning nozzles move vertically with respect to the duct and repeated cleaning is automatically performed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for automatically cleaning a portable duct mainly used for ventilation in a work site having a poor air environment such as a work site in a closed pit or a paint work site. .

Natural ventilation is usually used at work sites that are closed in a closed environment such as in a pit or in a water and sewage mine, at work sites where dust flies, such as painting, or at welding sites where flux or odor drifts. Since it cannot be performed sufficiently, it is forced to work in a very bad air environment. Therefore, conventionally, a portable duct is connected to a blower and forcedly ventilated to ensure worker safety. A portable duct is a spiral core material that is covered with a cylindrical resin sheet to form an elastic bellows that can be retracted and stored, stored, transported, etc. One end of the blower is connected in communication, and the other end is extended by connecting ducts or connected to the exhaust port.
Since such portable ducts ventilate air in which dust or dust flies, dirt such as dust adheres to and accumulates on the inner and outer peripheral surfaces of the duct. It had to be cleaned immediately or periodically.

  As a conventional portable duct cleaning device, the technique described in Patent Document 1 is known. In the technique of Patent Document 1, a cleaning nozzle and an air nozzle are disposed at the center of a cleaning tank having an upper opening, and a cleaning nozzle and an air nozzle are disposed at appropriate intervals on the inner peripheral surface of the cleaning tank. Yes. The positional relationship between the cleaning nozzle and the air nozzle is such that the air nozzle is positioned upward. The direction of the air nozzle is set so that air is ejected obliquely downward. Furthermore, in the technique of Patent Document 1, an air injection port is provided on the tip end side of an arm curved in an arch shape so as to face the upper opening side of the cleaning tank.

  In the technique of Patent Document 1, the cleaning of the portable air duct is performed by inserting a used portable duct into the cleaning tank and spraying cleaning water toward the inner peripheral surface and the outer peripheral surface of the duct. The air is ejected obliquely downward from the air nozzle to blow away the cleaning water adhering to the inner and outer peripheral surfaces of the duct. From such a state, an operator grasps the upper end side of the portable air duct, pulls it out from the cleaning tank, moves it along the arm curved in an arch shape, and folds it on the opposite side of the arm.

JP 2002-320939 A

However, in the technique of Patent Document 1, it is necessary for an operator to manually clean the duct while pulling out the portable duct from the cleaning tank, and it is heavy and contains moisture. He was forced to work hard.
Moreover, if the dirt is severe, it must be washed repeatedly, but the speed at which the worker pulls out while checking the degree of dirt on the duct can be adjusted to increase the washing time for the same part, or to raise and lower the duct. It was moved repeatedly to wash away terrible dirt, which further increased the burden on workers.

In addition, such ducts are usually used in many places even at one work site, and there are cases where the burden on the worker in one day cannot be planned.
Furthermore, there is a problem in terms of labor saving because it is necessary for workers to be constantly stationed by the cleaning tank to perform the cleaning work.
Furthermore, since the air injection port is provided on the distal end side of the curved arm so that the cleaning water is blown off from the inner peripheral surface side of the duct, the resin sheet portion of the duct tends to bulge outward between the spiral core materials. Therefore, there was a drawback that the duct could not be folded smoothly.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and is intended to provide a portable duct cleaning apparatus capable of automating the duct cleaning operation.

  Thus, in order to solve the above-mentioned problem, the means of claim 1 employed by the present invention is a duct mounting table disposed in a central part in a casing so as to be movable up and down via a swing cylinder, and the duct. A duct lifting mechanism mounted on the casing side mount, facing the several places on the outer peripheral surface of the duct set in a folded state on the mounting table, and an inner circumference of the duct erected at the center of the duct mounting table A nozzle for cleaning the surface, and a plurality of nozzles for cleaning the outer peripheral surface of the duct standing upright from the center of the duct mounting table. The duct push-up mechanism includes a large pulley that is rotated by a motor and the pulley. A portable duct cleaning device comprising: a small pulley rotatably mounted at a plurality of positions on an outer peripheral edge of a large pulley, and being attached to the outer peripheral surface of the duct so as to be movable forward and backward.

  The means according to claim 2 adopted by the present invention is located closer to the outer periphery than the position of the outer peripheral surface of the duct placed on the duct mounting table, the lower side being the large diameter portion and the upper side being the small diameter portion. A plurality of stays are erected from the casing side frame, and an annular disk for suspending the duct having a small hole that is detachably fitted to the small diameter portion of the stay is prepared. A locking member for hanging and holding the opening side end portion is attached, and the opening side end portion of the duct is locked by the locking member so that the duct is set in a suspended state in the casing. It is a washing | cleaning apparatus of the described portable duct.

  According to the third aspect of the present invention, the cleaning nozzle on the outer peripheral surface side is arranged at the upper and lower positions, the cleaning nozzle on the lower side faces obliquely downward, and is pushed down to the duct by the water flow of the cleaning water. 3. The portable duct cleaning apparatus according to claim 1 or 2, wherein a directional force is applied.

  According to the fourth aspect of the present invention, the outer peripheral surface side cleaning nozzle and the inner peripheral surface side cleaning nozzle are arranged so that the outer peripheral surface side cleaning nozzle is slightly higher. The pressure of the washing water by the nozzle on the outer peripheral surface side of the duct that is pushed upward is applied to the resin sheet portion of the duct so that the resin sheet can be folded easily. Item 4. The portable duct cleaning device according to any one of Items 1 to 3.

In the portable duct cleaning apparatus according to the first aspect of the present invention, the duct mounting table is arranged to be movable up and down via a rocking cylinder in the central portion of the casing. On this duct mounting table, a dirty duct requiring cleaning is set in a folded state. At several positions facing the outer peripheral surface of the duct in a state of being set on the mounting table, a duct push-up mechanism disposed so as to be movable forward and backward with respect to the outer peripheral surface of the duct is provided.
This duct push-up mechanism has a large pulley that is rotated by a motor, and a small pulley that is pivotally attached to a plurality of locations on the outer peripheral edge of the large pulley. When the large pulley of the push-up mechanism is rotated and moved forward with respect to the outer peripheral surface of the duct, the small pulley eventually comes into contact with the resin sheet portion of the duct and is pushed into the inner peripheral surface, and the resin sheet is hooked on the small pulley. It will be in the state. When the advancement of the push-up mechanism is stopped in this state, the small pulley pushes the resin sheet upward in accordance with the rotation of the large pulley. Then, when the rotation of the large pulley proceeds, the small pulley eventually takes a rotation path away from the resin sheet and releases the engagement with the resin sheet. When the rotation of the large pulley further proceeds, the next small pulley comes into contact with the resin sheet and is pushed into the inner peripheral surface side to be hooked, and the resin sheet is sequentially pushed up as the large pulley rotates. In this way, the push-up mechanism automatically pushes up the resin sheet in the duct in order.

On the other hand, cleaning nozzles are arranged at the center side of the duct mounting table and at positions facing the outer periphery of the duct. By injecting cleaning water from these cleaning nozzles, the inner and outer peripheral surfaces of the duct can be cleaned. Moreover, since the resin sheet of the duct is pushed forward by the push-up mechanism, automatic cleaning is possible over the entire length of the duct.
Further, since the duct mounting table moves up and down by the swing cylinder, the cleaning nozzle moves up and down with respect to the duct, so that repeated cleaning can be automatically performed.

In the invention of claim 2, the stay for hanging the duct is erected at a position closer to the outer periphery than the position of the outer peripheral surface of the duct mounted on the duct mounting table. The stay has a large-diameter portion on the lower side and a small-diameter portion on the upper side, and a plurality of stays are erected from the casing side mount.
Then, an annular disk for suspending the duct having a small hole that is detachably fitted to the small diameter part of the stay is prepared, and the opening side end of the duct is suspended and held on the annular disk. A locking member is attached, and the opening side end of the duct is locked by the locking member.
Therefore, the cleaning operator locks the opening side end of the duct to the locking member of the annular disk, and in this state, the small hole of the annular disk is inserted through the small diameter portion of the stay, so that the duct is installed in the casing. In the state of being suspended in the central portion, the lower end side can be placed on the mounting table to complete the preparation for cleaning. In other words, the preparation work for the cleaning worker only needs to set the duct.

  In the invention of claim 3, the cleaning nozzle on the outer peripheral surface side is arranged at the upper and lower positions, the cleaning nozzle on the lower side is directed obliquely downward, and is pushed in the direction of pushing down the duct by the water flow of the cleaning water. It comes to give power. For this reason, the push-up mechanism described in claim 1 applies a force to pull up the resin sheet of the duct upward, and the cleaning nozzle below the outer peripheral surface pushes the resin sheet of the duct downward. Give the power to try. As a result, in the portion of the cleaning region where the cleaning water sprayed from the cleaning nozzle collides with the resin sheet and removes the adhered dirt, the resin sheet in the region portion is stretched up and down to facilitate washing. Thus, since the resin sheet is washed in the stretched state, the adhered dirt can be easily washed off.

  In the invention according to claim 4, the positional relationship in the vertical direction between the cleaning nozzle on the outer peripheral surface side located on the upper part and the cleaning nozzle on the inner peripheral surface side is slightly higher in the cleaning nozzle on the outer peripheral surface side. Are arranged as follows. For this reason, in the duct pushed upward by forward feeding, the force of pushing inward to the resin sheet portion of the duct is given by the water flow of the washing water sprayed from the washing nozzle on the outer peripheral surface side. As a result, the resin sheet pushed up after cleaning is folded inwardly between the spiral core materials, and the core sheet is folded with the interval between the core materials narrowed. There is an advantage that it becomes extremely smooth.

It is a top view which shows the state which removed the top plate of the washing | cleaning apparatus which concerns on one embodiment of this invention. FIG. 1 shows a duct suspending tool according to an embodiment of the present invention, in which FIG. (A) is a plan view of an annular disk, and FIG. (B) is a state in which the duct is locked to the annular disk by a locking member. It is a schematic longitudinal cross-sectional front view which shows. FIG. 6 is a schematic right side view showing a state in the middle of setting the duct to the cleaning device according to the embodiment of the present invention. It is a schematic front view which shows the state which concerns on one embodiment of this invention and has pushed up the duct with the raising mechanism. It is a top view which concerns on one embodiment of this invention, and shows the arrangement | positioning relationship of an air nozzle. It is a front view which concerns on one embodiment of this invention and shows the relationship between a raising mechanism and a rocking | fluctuation cylinder. It is a schematic side view which shows the up-and-down positional relationship of the outer peripheral surface side washing nozzle which concerns on one embodiment of this invention. FIG. 1 relates to an embodiment of the present invention, and shows one relationship between a cleaning nozzle and an air nozzle. FIG. (A) is a schematic side view, and FIG. (B) is a plan view. FIG. 4 is a plan view, FIG. (B) is a front view, and FIG. (C) is a right side view, showing an air duct type drying mechanism according to another embodiment of the present invention. is there.

  Hereinafter, the configuration of the present invention will be described with reference to the drawings based on an embodiment of an apparatus for cleaning an air duct having an outer diameter of 350 mm and an overall length of 5 m. As shown in the plan view of FIG. 1, the schematic front view of FIG. 6, the schematic side view of FIG. 7, etc., the cleaning device 1 of this embodiment covers a cylindrical resin sheet 2 on a spiral core material. It is intended for portable ducts 3 that are configured to be stretchable and bellows, and the duct 3 is washed in the casing 4 so that splashes of washing water do not scatter around. An opening / closing door 5 for setting or removing the duct 3 is attached to the front side of the casing 4 (see FIG. 1).

  A duct mounting table 7 is disposed in the central part of the casing 4 via a swing cylinder 6 so as to be movable up and down. As shown in FIG. 7, the casing 4 and the oscillating cylinder 6 are fixed, and a portion where the piston rod 6a of the oscillating cylinder 6 is extended penetrates into the cleaning chamber of the casing 4, and a duct mounting table is provided at the tip thereof. 7 is attached. In FIG. 7, reference numeral 8 denotes a guide bush of the piston rod extension portion.

A used dirty duct 3 requiring cleaning is set on the duct mounting table 7 in a folded state. At several positions facing the outer peripheral surface of the duct set on the duct mounting table 3, duct lifting mechanisms 9 are provided so as to be movable forward and backward with respect to the outer peripheral surface of the duct. In this embodiment, the push-up mechanisms 9 are arranged so as to be positioned at four positions separated by about 90 degrees with respect to the outer peripheral surface of the set duct 3.
The duct push-up mechanism 9 has a total of two tables 11 on the left and right sides spanned between sliders 10 (members shown by hatching in FIG. 1) provided on the inner wall surface on the front side and the back side of the casing 4. The two tables 11 and 11 can be moved forward and backward by air cylinders 12 and 12, respectively. On each table 11, 11, two large pulleys 13, 13 are rotatably installed on the front side and the back side. A plurality of small pulleys 14 are pivotally attached to the peripheral edges of the large pulleys 13 and 13. FIG. 4 shows a case where ten small pulleys 14 are installed. The large pulleys 13 and 13 of the tables 11 and 11 are fixed to the rotary shaft 15. As shown in FIG. 3, the rotary shaft 15 is connected to a motor 19 fixed outside the casing via a sprocket 16, a chain 17, and a sprocket 18.

  As shown in FIG. 1, FIG. 7, and FIG. 8, an air pipe 20 for the inner peripheral surface of the duct is erected at the center of the duct mounting table 7, and an air nozzle 21 for the inner peripheral surface is provided on the upper side. It is attached. A cleaning nozzle 22 for cleaning the inner peripheral surface of the duct is attached to the outer peripheral surface of the air pipe 20 below the air nozzle 21. In addition, air pipes 23 for the outer periphery of the duct are erected at several positions (four in the drawing) of the outer periphery of the duct 3 set on the duct mounting table 7. Air nozzles 24 and 25 are attached. In the vicinity of the air nozzles 24 and 25, cleaning nozzles 26 and 27 for cleaning the outer peripheral surface of the duct are attached to the outer peripheral surface of the air pipe 23.

By the way, the positional relationship between the air and the cleaning water nozzle is arranged so as to have a special function related to the duct cleaning operation. First, the outer peripheral surface cleaning nozzle 26 and the inner peripheral surface cleaning water nozzle 22 are positioned so that the outer peripheral surface nozzle 26 is slightly higher. This is because the resin sheet 2 of the duct 3 is pushed inward with the cleaning water for the outer peripheral surface so that the resin sheet can be easily folded. This positional relationship is the same for the air nozzle 24 on the outer peripheral surface side and the air nozzle 21 on the inner peripheral surface side.
Next, the jetting direction of the lower side cleaning nozzle 27 for cleaning the outer peripheral surface is directed obliquely downward. This is because the washing water is applied with a downward force on the resin sheet so that the washing portion of the resin sheet extends. The direction of the air nozzle 25 for the outer peripheral surface is the same.

As shown in FIGS. 3 and 4, a plurality of stays 28 for suspending the duct are provided upright at a position closer to the outer periphery than the position of the outer peripheral surface of the duct 3 mounted on the duct mounting table 7. . The drawing shows a case where four are provided. The stay 28 has a large diameter portion 28 a on the lower side and a small diameter portion 29 b on the upper side, and is fixedly installed on the casing side mount 29.
Then, as shown in FIG. 2, an annular disk 31 for suspending a duct having a small hole 30 that is detachably fitted to the small diameter portion 28 b of the stay 28 is prepared. A locking member 32 that suspends and holds the opening side end of the duct 3 is attached.

  Next, the operation | movement aspect of the portable duct washing | cleaning apparatus 1 comprised in this way is demonstrated. First, as shown in FIG. 2B, the opening 3 of the duct 3 is locked by the locking member 32 of the annular disk 31 to prepare the duct 3 that needs cleaning. In this state, the opening / closing door 5 of the casing 4 shown in FIG. 1 is opened, and the small hole 30 of the annular disk 31 is fitted into the small diameter portion 28 b of the stay 28. If the hand is released, the duct 3 falls to a position where the annular disk 31 comes into contact with the upper end of the large-diameter portion 28a by its own weight and stops. At this time, the lower end side of the duct 3 is placed on the mounting table 7. Thereafter, the worker closes the door 5 and presses the main switch of the operation panel 33 shown in FIG.

  As a result, the motor 19 of the push-up mechanism 9 starts rotating, and the rotational driving force is transmitted from the sprocket 18 to the sprocket 16 via the chain 17 to rotate the rotating shaft 15. Therefore, the large pulley 13 fixed to the rotating shaft 15 starts to rotate in the direction indicated by the arrow in FIG. Further, the air cylinder 12 for moving the push-up mechanism 9 forward and backward moves to move the tables 11 and 11 forward, and the small pulley 14 pivotally attached to the outer peripheral edge of the large pulley 13 is brought into contact with the resin sheet 2 of the duct 3. Make contact and push slightly into the inner surface. The forward movement by the air cylinder 12 is stopped in this state.

  Accordingly, the small pulley 14 is pushed upward in a state where the resin sheet 2 is hooked in accordance with the rotation of the large pulley 13. Then, as the rotation of the large pulley 13 proceeds, the small pulley 14 eventually takes a rotation path away from the resin sheet 2 and the engagement with the resin sheet 2 is released. When the rotation of the large pulley 3 further proceeds, the next small pulley 14 comes into contact with the resin sheet 2 and is pushed into the inner peripheral surface side to be hooked, and the resin sheet 2 is sequentially moved along with the rotation of the large pulley 13. It comes to push up. In this way, the push-up mechanism 9 automatically pushes up the resin sheet 2 of the duct 3 in order.

  On the other hand, compressed air and cleaning water are jetted from the center side of the duct mounting table 7 and air and cleaning nozzles arranged at positions facing the outer peripheral surface of the duct, respectively. Air is supplied from a separate compressor, and wash water is supplied from a separate high-pressure pump unit. First, the inner and outer peripheral surfaces of the resin sheet 2 of the duct 3 are cleaned by the cleaning water sprayed from the cleaning nozzles 22, 26 and 27 for cleaning the inner and outer peripheral surfaces. Subsequently, dirt such as dust adhering to the inner and outer peripheral surfaces of the resin sheet 2 is washed by the compressed air ejected from the air nozzles 21, 24, and 25.

  At the time of this cleaning, a force pushed upward by the push-up mechanism 9 acts on the upper side of the resin sheet 2 of the duct 3, and on the lower side, the resin sheet is generated by the water flow of the cleaning water jetted obliquely downward from the lower-side cleaning nozzle 27. A downwardly pushing force acts on this. Therefore, in the cleaning region where the cleaning nozzle is disposed, the resin sheet 2 is pulled upward at the upper side and pushed down at the lower side, so that the cleaning portion is stretched to eliminate bending and facilitate cleaning. In addition, an excellent cleaning effect is obtained.

  During this cleaning operation, the oscillating cylinder 6 repeatedly moves up and down with a stroke of, for example, 100 to 150 mm. Therefore, each cleaning nozzle jets cleaning water while moving up and down with respect to the duct 3, so that repeated cleaning with excellent cleaning effect can be automatically performed.

  Further, the upper-side cleaning water nozzle 26 for cleaning the outer peripheral surface and the cleaning water nozzle 22 for cleaning the inner peripheral surface are configured such that the outer peripheral surface nozzle 26 is positioned slightly higher. No. 3 resin sheet 2 passes through the cleaning area in a state where the resin sheet 2 is pushed inward by the cleaning water for the outer peripheral surface. That is, the resin sheet 2 of the duct 3 that has passed through the cleaning region is pushed up in a state of being pushed inward from the core material and is sequentially folded so as to be easily folded. As described above, this effect is the same for the air nozzle 24 on the outer peripheral surface side and the air nozzle 21 on the inner peripheral surface side.

  If the lower end portion of the resin sheet 2 of the duct 3 is pushed up by the push-up mechanism 9 in this way, the first cleaning of the entire duct 3 is completed. Thereafter, if necessary, the push-up mechanism 9 is retracted, the duct 2 is naturally dropped and returned to the set state, and the above-described cleaning operation may be repeated. Note that dirty water, dust, and the like after cleaning are discharged from the drain pipe 36 shown in FIG.

  FIG. 9 shows an embodiment in which an air duct 34 for drying the inner peripheral surface and an air duct 35 for drying the outer peripheral surface are branched and provided above the duct 3 in a state where the air nozzle is removed and set. . In addition, the structure of the other washing | cleaning apparatus is the same as the case of embodiment shown in the said FIGS.

The present invention is not limited to this embodiment, and appropriate modifications are possible. For example, the cleaning nozzle 22 for cleaning the inner peripheral surface is capable of spraying cleaning water in the entire circumferential direction, such as a sprinkler, or of a type that sprays cleaning water in the entire circumferential direction while automatically rotating If it is used, the purpose can be achieved by installing only one. Moreover, the range of the injection angle of each cleaning nozzle or air nozzle can be changed as appropriate according to the number of installation.
In addition, the case where the air nozzle and the washing nozzle are provided separately has been described, but this is common, and when connected to a high pressure water pump with a switching valve, washing water can be injected and connected to the compressor In this case, compressed air for drying may be jetted.

DESCRIPTION OF SYMBOLS 1 ... Portable duct washing | cleaning apparatus 2 ... Resin sheet 3 ... Portable duct 4 ... Casing 5 ... Opening / closing door 6 ... Swing cylinder 7 ... Duct mounting base 9 ... Push-up mechanism 11 ... Table 12 ... Air cylinder 13 for advancing and retreating ... large pulley 14 ... small pulley 21 ... air nozzle 22 for inner peripheral surface ... cleaning nozzle 24 for inner peripheral surface ... upper air nozzle 25 on outer peripheral surface side ... lower air nozzle 26 on outer peripheral surface side ... upper cleaning nozzle 27 on outer peripheral surface side ... Lower cleaning nozzle on the outer peripheral side

Thus, in order to solve the above-mentioned problem, the means of claim 1 employed by the present invention is a duct mounting table disposed in a central part in a casing so as to be movable up and down via a swing cylinder, and the duct. A duct push-up mechanism that is arranged facing several locations on the outer peripheral surface of the duct set in a folded state on the mounting table, and that can be moved forward and backward with respect to the central part of the casing. In this manner, the two tables arranged facing the left and right, the nozzle for cleaning the inner peripheral surface of the duct erected at the center of the duct mounting table, and a position appropriately spaced from the center of the duct mounting table And a duct push-up mechanism has a large pulley rotatably mounted on the table by a motor, and a plurality of outer peripheral edges of the large pulley are provided at a plurality of positions. Small The car protrudes from the periphery of the large pulley and is pivotally mounted. When the table is advanced with respect to the outer peripheral surface of the duct while rotating the large pulley, the small pulley is set on the duct mounting table. The resin sheet is pushed inward on the inner peripheral surface side and brought into engagement with the small pulley. When the large pulley rotates, the small pulley pushes the resin sheet upward, and when the large pulley further rotates The small pulley takes a rotational track away from the resin sheet, releases the engagement with the resin sheet, and the plurality of small pulleys repeat the rotation and rotation of the large pulley with the resin sheet of the small pulley. This is a portable duct cleaning device characterized in that the resin sheet is automatically pushed up in order .

Thus, in order to solve the above-mentioned problems, the means of the present invention adopted by the present invention is a portable duct having a spiral core material covered with a cylindrical resin sheet and configured to be stretchable and bellows. , disposed opposite to the central portion through the swing cylinder and vertically movably disposed a duct mounting table, the outer peripheral surface several places of the duct which is set in a folded state in the duct mounting table in the casing A duct lifting mechanism attached to the casing side frame, two tables arranged opposite to the left and right so that the lifting mechanism can be moved forward and backward with respect to the central portion of the casing, and a center of the duct mounting table. The duct inner peripheral surface cleaning nozzles erected and a plurality of duct outer peripheral surface cleaning nozzles erected at positions appropriately separated from the center of the duct mounting table, the duct push-up mechanism, table The pulley has a large pulley that can be rotated by a motor, and a plurality of small pulleys protrude from the periphery of the large pulley and are pivotally mounted at a plurality of locations on the outer peripheral edge of the large pulley. When the table is moved forward with respect to the outer peripheral surface of the duct, the small pulley comes into contact with the resin sheet portion of the duct set on the duct mounting table and pushes the resin sheet toward the inner peripheral surface so as to be engaged with the small pulley. In accordance with the rotation of the large pulley, the small pulley pushes the resin sheet upward, and when the rotation of the large pulley further proceeds, the small pulley takes a rotation path away from the resin sheet and releases the engagement with the resin sheet. A portable type characterized in that a plurality of small pulleys repeats the rotation of the large pulley and the engagement and release with the resin sheet of the small pulley so that the resin sheet of the duct is automatically pushed forward. Duct Kiyoshi is a device.

Thus, in order to solve the above-mentioned problems, the present invention adopts the means of claim 1 of a portable duct configured to be a bellows that can be stretched by covering a spiral core material with a cylindrical resin sheet . A cleaning device comprising a duct mounting table disposed in a central portion of a casing so as to be movable up and down via a swing cylinder, and a plurality of outer peripheral surfaces of the duct set in a folded state on the duct mounting table. A duct push-up mechanism that is disposed opposite to each other and that is attached to the casing side frame, two tables that are disposed opposite to each other so that the push-up mechanism can be moved forward and backward with respect to the central portion of the casing, and the duct A duct inner peripheral surface cleaning nozzle erected at the center of the mounting table, and a plurality of duct outer peripheral surface cleaning nozzles erected at positions appropriately separated from the center of the duct mounting table. Push-up mechanism A large pulley rotatably mounted on the table by a motor, and a plurality of small pulleys projecting from the peripheral edge of the large pulley at a plurality of positions on the outer peripheral edge of the large pulley. When the table is moved forward with respect to the outer peripheral surface of the duct while rotating the large pulley, the small pulley comes into contact with the resin sheet portion of the duct set on the duct mounting table and pushes the resin sheet toward the inner peripheral surface side. The small pulley pushes the resin sheet upward in accordance with the rotation of the large pulley, and when the rotation of the large pulley further proceeds, the small pulley takes a rotation path away from the resin sheet and engages with the resin sheet. The plurality of small pulleys repeats the rotation of the pulley and the engagement and release of the pulley with the resin sheet of the small pulley, so that the resin sheet of the duct is automatically pushed forward. Toss A cleaning device for a portable ducts.

Claims (4)

  A duct mounting table disposed in a central part in the casing so as to be movable up and down via an oscillating cylinder, and arranged to face several places on the outer peripheral surface of the duct set in a folded state on the duct mounting table, A duct push-up mechanism attached to the casing-side gantry, a duct inner peripheral surface cleaning nozzle erected at the center of the duct mounting table, and a plurality of erected at positions appropriately separated from the center of the duct mounting table The duct outer peripheral surface cleaning nozzle, and the duct push-up mechanism has a large pulley that is rotated by a motor and small pulleys that are rotatably mounted at a plurality of locations on the outer peripheral edge of the large pulley. A portable duct cleaning apparatus, wherein the portable duct cleaning apparatus is attached to the outer peripheral surface of the portable duct so as to freely advance and retract.   A plurality of stays standing on the casing side stand are located on a position closer to the outer periphery than the outer peripheral surface position of the duct placed on the duct mounting base, the lower side being a large diameter portion and the upper side being a small diameter portion, from the casing side stand, A locking member that prepares an annular disk for suspending a duct having a small hole that is detachably fitted and attached to a small diameter portion of the stay, and suspends and holds the opening side end of the duct on the annular disk The portable duct cleaning apparatus according to claim 1, wherein the duct is set in a suspended state in the casing by locking the opening side end of the duct with the locking member.   The cleaning nozzle on the outer peripheral surface side is arranged at the upper and lower positions, the cleaning nozzle on the lower side is directed obliquely downward, and the force in the downward direction is applied to the duct by the water of the cleaning water. Item 3. The portable duct cleaning apparatus according to Item 1 or 2.   The outer peripheral surface side cleaning nozzle and the inner peripheral surface side cleaning nozzle located at the top are arranged so that the outer peripheral surface side cleaning nozzle is slightly higher, and the outer periphery of the duct pushed upward The force of pushing inward with respect to the resin sheet part of a duct is given by the water flow of the washing water by a surface side nozzle, and folding of a resin sheet is made easy. Portable duct cleaning equipment.

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