JP2009291763A - Cleaning device and cleaning system for cylindrical container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively clean both of a bottom surface and a side surface inside the cylindrical container by automatically removing thixotropy residue stuck there. <P>SOLUTION: In the cylindrical container D supported with its opening part Dh facing in a direction to the obliquely lower part and rotated in a predetermined direction with a longitudinal axis line Ld as a center, a blade 30 for the bottom surface and a blade 40 for the side surface are advanced to predetermined positions inside the cylindrical container D, and the cylindrical container D is rotated for predetermined rotational frequencies with the blade 30 for the bottom surface pressed to the inner bottom surface Db of the cylindrical container D, and thereafter the blade 40 for the side surface is retreated along the inner side surface Ds of the cylindrical container D, while the blade 40 for the side surface is kept pressed to the inner side surface Ds of the cylindrical container D and while the cylindrical container D is kept rotating, thereby the thixotropy residue stuck to the bottom surface Db and the side surface Ds inside the cylindrical container D being automatically removed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cylindrical container cleaning device, more specifically, a cylindrical container having an opening at one end, such as a drum can for containing, storing, and transporting thixotropic content such as paint. The present invention relates to a cleaning device for a cylindrical container that automatically removes thixotropic residues adhering to the inner surface of the container after being emptied to clean the inner surface, and a cleaning system for a cylindrical container incorporating the cleaning device.

  As a general method for cleaning the inner surface of the cylindrical container as described above after emptying, a method for removing thixotropic residue adhering to the inner surface of the container by applying a cleaning liquid or a solvent is known. . According to this method, the thixotropic residue can be easily and effectively removed and the container can be reused by selecting a cleaning liquid and a solvent that are suitable for removing the adhered residue.

  However, in this method, all thixotropic residues adhering to the inner surface of the container are mixed into the cleaning liquid and solvent, and therefore the cleaning liquid and solvent cannot be used repeatedly. Therefore, it is necessary to prepare a new cleaning liquid and solvent with a very small number of cycles and to treat the used one as a waste liquid. For this reason, a cost burden becomes large and it is not preferable also in aiming at suppression of the load to an environment.

  Therefore, when applying this method, the thixotropic residue adhering to the inner surface of the container is removed as much as possible in the previous step prior to cleaning with a cleaning solution or solvent, and the amount of adhering residue is minimized. It is desirable to clean by applying a cleaning solution or a solvent.

  In addition, as another cleaning method with the intention of reusing a cylindrical container that handles thixotropic contents, the empty cylindrical container is heated at a high temperature to burn out the contents remaining on the inner surface. However, it is known to perform cleaning and drying after surface treatment such as shot blasting, but even in this case, from the viewpoint of reducing the cost required for burnout and considering environmental issues, It is desirable to remove the residue as much as possible in the previous step.

In relation to such a problem, for example, Patent Document 1 discloses that a highly thixotropic residue collected near the bottom of a used drum can is scraped off and transported to the outside of the drum without reattaching to the side surface of the drum. A drum can residue removal device intended to be discharged is disclosed.
JP 2007-160197 A

  In the prior art described in Patent Document 1, since the recovery drum can be normally placed in a stock yard, even if the residue is initially attached to the side surface above the bottom, the residue flows down over time. In the end, however, it is assumed that most of the liquid accumulates in the vicinity of the bottom of the drum, and the residue hardly adheres to the side surface of the drum. Therefore, as for the side surface of the drum, only care is taken so that the residue scraped off near the bottom is not reattached when transported and discharged to the outside, and there is no concern about cleaning the side surface itself. .

However, in recent years, for example, water-based paints used for painting automobile outer panels, etc., are very viscous, that is, the viscosity at a high shear rate is small, but the viscosity at a low shear rate is very high. It is not uncommon to show high thixotropy. An example of such a high thixotropy is AR-2000 series, which is a water-based base paint manufactured by Nippon Paint Co., Ltd. This paint is imparted with high thixotropy such that the ratio η ₆ / η ₆₀ between the viscosity η ₆ at 6 rpm and the viscosity η _{60 at 60} rpm is 2 or more with a B-type viscometer.

  When the contents of the drum can have such high thixotropy, even if the container (drum can) that has been emptied after using the contents is stocked vertically, the contents that remain attached to the inner wall of the drum can Only a low shear rate due to gravity is added. In such a state, the contents adhered and remaining on the inner side surface of the container do not readily flow down, and when left for a certain period of time, the solidification may start as it is adhered to the side surface. In such a case, it is necessary to scrape and remove the adhered residue not only on the bottom surface in the cylindrical container but also on the side surface.

  Further, in the prior art described in Patent Document 1, it is necessary that the residue adhered to the side surface flows down to the vicinity of the bottom of the container to such an extent that scraping of the inner side surface of the container becomes unnecessary. The inside of the container cannot be cleaned using the apparatus described in Patent Document 1. Therefore, in order to clean the container, it is necessary to consider the waiting time, and the degree of freedom of the process is greatly impaired.

  Therefore, the present invention provides a cylindrical container cleaning device capable of automatically removing thixotropic residues adhering to the bottom and side surfaces inside the cylindrical container and cleaning both the bottom and side surfaces inside the cylindrical container, and The object of the present invention is to provide a cleaning system for a cylindrical container incorporating such a cleaning device.

  Therefore, a cylindrical container cleaning apparatus according to the present invention is a cylindrical container cleaning apparatus that removes thixotropic residue adhering to the inner surface of a cylindrical container having an opening at one end and cleans the inner surface, ) Container support means for supporting the cylindrical container with the opening directed obliquely downward; and b) rotating the cylindrical container supported by the container support means in a predetermined direction about its longitudinal axis. A container rotating means, c) a bottom surface cleaning tool pressed against the inner bottom surface of the cylindrical container to clean the bottom surface; and a side surface cleaning tool pressed against the inner side surface of the cylindrical container to clean the side surface. D) an inner surface cleaning means provided; d) forward / backward movement means for moving the inner surface cleaning means forward / backward with respect to the inside of the cylindrical container through the opening; and e) a bottom surface for pressing the bottom surface cleaning tool against the inner bottom surface of the cylindrical container. Cleaning tool push An abutting means; f) a side surface cleaning tool pressing means for pressing the side surface cleaning tool against the inner side surface of the cylindrical container; and g) a control means for controlling each of the means. H) The advancing / retreating means advances the inner surface cleaning means to a predetermined position inside the cylindrical container, and the cylindrical container rotates a predetermined number of times while the bottom surface cleaning tool pressing means presses the bottom surface cleaning tool against the inner bottom surface of the cylindrical container. Later, while the side surface cleaning tool pressing means maintains the state where the side surface cleaning tool is pressed against the inner side surface of the cylindrical container and the rotation state of the cylindrical container, the forward / backward moving means cylinders the side surface cleaning tool pressing means. Control is performed so that the container is retracted along the inner side surface of the container.

In this case, the thixotropic residue, viscosity eta ₆ at 6rpm a B-type viscometer, even contents of a two or more values of the ratio η ₆ / η ₆₀ of the viscosity eta ₆₀ at 60rpm Good.

  In the above-described case, the forward / backward moving means includes: i) a base boom having one end positioned near the opening of the cylindrical container and extending obliquely downward; and an inner surface cleaning means at one end, the longitudinal direction of the base boom. J) The base boom is supported so as to be pivotable in the vertical direction around the pivotal support, and is more cylindrical than the pivotal support. The side close to the opening of the container is supported by the lifting / lowering means so that it can be lifted / lowered. K) The base boom pivots downward about the pivot by the lowering action of the lifting / lowering means, and the bottom surface cleaning tool is a cylindrical container. The side cleaning tool is pressed against the inner side surface of the cylindrical container.

  Moreover, in the above case, it is more preferable to further include an opening edge cleaning tool that is pressed against the opening edge of the cylindrical container and cleans the opening edge.

  Further, in the above case, the side surface cleaning tool includes an elastic blade, and the elastic blade has a side closer to the opening of the cylindrical container in the rotation direction of the cylindrical container with respect to the surface including the longitudinal axis of the cylindrical container. It is even more preferable that it is pressed against the inner side surface of the cylindrical container while being inclined so as to be located on the downstream side.

  Still further, in the above case, the bottom surface cleaning tool includes an elastic blade, and the elastic blade cleans a region from the peripheral portion of the bottom surface of the cylindrical container to the middle portion of the cylindrical container, and the first blade portion. It is more preferable that the second blade portion is provided so as to be inclined with respect to one blade portion and cleans an area from the midway portion to beyond the center.

  Furthermore, in the above case, a cleaning agent supplying means for supplying a predetermined cleaning agent to the inner surface of the cylindrical container may be further provided.

The cylindrical container cleaning system according to the present invention is a cylindrical container cleaning system that removes thixotropic residues adhering to the inner surface of a cylindrical container having an opening at one end to clean the inner surface. The cleaning device for the cylindrical container according to the invention, the brush cleaning device for cleaning the inner surface of the cylindrical container by supplying a cleaning agent to the inner surface of the cylindrical container and rubbing the inner surface with a brush, and / or the inner surface of the cylindrical container A jet cleaning device that cleans the inner surface of the cylindrical container by spraying a jet of cleaning liquid, and after cleaning by the cleaning device, cleaning by the brush cleaning device and / or cleaning by the jet cleaning device. It is characterized by doing.
In this case, either the cleaning by the brush cleaning device or the cleaning by the jet cleaning device may be performed first, and the number of times is not limited to one time, and may be performed a plurality of times. Also good.

  According to the cleaning device for a cylindrical container according to the present invention, the advancing / retreating means is provided on the inner surface with respect to the cylindrical container that is supported in a state where the opening is directed obliquely downward and is rotated in a predetermined direction about the longitudinal axis. The cleaning means is advanced to a predetermined position inside the cylindrical container, and after the cylindrical container rotates a predetermined number of times while the bottom surface cleaning tool pressing means presses the bottom surface cleaning tool against the inner bottom surface of the cylindrical container, the side surface cleaning tool pressing means The advancing / retreating means retracts the side cleaning tool pressing means along the inner side surface of the cylindrical container while maintaining the state where the side cleaning tool is pressed against the inner side surface of the cylindrical container and the rotating state of the cylindrical container. Thus, the thixotropic residue adhering to the bottom and side surfaces inside the cylindrical container can be automatically removed, and both the bottom and side surfaces inside the cylindrical container can be efficiently cleaned.

  Further, according to the cylindrical container cleaning system of the present invention, prior to the cleaning by the brush cleaning device and / or the cleaning by the jet cleaning device, the inner surface of the cylindrical container is cleaned by the cleaning device of the cylindrical container. As described above, both the bottom surface and the side surface inside the cylindrical container can be efficiently cleaned. In this way, after cleaning the inner surface of the cylindrical container using the cleaning device, cleaning by the brush cleaning device and / or cleaning by the jet cleaning device is performed, so that the residual paint mixed in the cleaning agent used in these subsequent processes is extremely The cleaning agent can be used repeatedly. Therefore, the cost burden related to cleaning and the like can be significantly reduced, and the environmental load related to waste liquid treatment can also be effectively suppressed.

  Embodiments of the present invention will be described below with reference to the accompanying drawings, taking as an example the case of cleaning the inner surface of a cylindrical container (so-called paint drum can) for containing, storing, and transporting paint, for example. In the present embodiment, the cylindrical container is preferably a so-called austenitic or ferritic stainless steel that is excellent not only in strength and rigidity but also in corrosion resistance and rust prevention properties so that the cylindrical container can be used repeatedly over a long period of time. It is manufactured using steel plate as the material.

FIG. 1 is a side view schematically showing the overall configuration of a cylindrical container cleaning device according to the present embodiment, FIG. 2 is an enlarged sectional view showing the cylindrical container supported in an inclined state, and FIG. FIG. 3 is an arrow view seen from the direction of arrows Y3-Y3 in FIG.
As shown in these drawings, the cleaning device M is configured by attaching various required members, devices, or mechanisms to a frame body 1 (device frame) standing at an installation location.

  The apparatus frame 1 includes a plurality of front frames 2 and a plurality of rear frames 3 arranged in the paper plane direction of FIG. 1 (hereinafter, this direction is referred to as a width direction of the cleaning apparatus M or the apparatus frame 1), and a front frame. 1 and a number of front and rear connection frames 4 that connect the rear frame 3 and the rear frame 3 in the left-right direction in FIG. The frame 3 is composed of a large number of widthwise connecting frames 6 that connect the front and rear connecting frames 4 in the width direction of the apparatus M.

  Conveying rollers R4 and R5 are attached to the frame 6 that connects the front and rear connection frames 4 in the width direction at a substantially middle portion in the vertical direction of the width direction connection frame 6. An empty cylindrical container D that has been carried into the cleaning device M by driving a transport conveyor (not shown) is transported to a predetermined position in the cleaning device M by the transport rollers R4 and R5, and the cylindrical container after cleaning. D is transported from a predetermined position in the cleaning device M to a transport conveyor (not shown) by transport rollers R4 and R5. In the region corresponding to the lower side of the cylindrical container D, a total of four such transport rollers R4 and R5 are arranged, at least two in the front-rear direction and two in the width direction. In this case, loading and unloading of the cylindrical container D is performed in the width direction of the cleaning device M.

  The cylindrical container D that has been emptied with no paint inside has an opening Dh at one end thereof to the right of the cleaning device M in FIG. 1 (hereinafter, this direction is referred to as the rear of the cleaning device M, and the opposite direction is cleaned. It is set to be carried into the apparatus M in a state of being directed to the front of the apparatus M). A front positioning roller R6 that guides the loading / unloading operation of the cylindrical container D and positions the lower portion of the front end of the cylindrical container D is disposed further forward than the front (left side in FIG. 1) conveying roller R4. ing.

  In the front-rear connecting frame 4 that connects the front frame 2 and the rear frame 3 in the front-rear direction at a substantially middle portion in the up-down direction, the cylindrical container D is tilted via the front and rear support rollers R1 and R2. For support, a front lifter S1 and a rear lifter S2 each having a vertical lift cylinder mechanism are fixed. The front and rear support rollers R1 and R2 are arranged in pairs in the width direction, and the two front support rollers R1 and the two rear support rollers R2 are each a base plate extending in the width direction ( These base plates are attached to the piston of the front lifter S1 and the piston of the rear lifter S2, respectively.

  In other words, in the present embodiment, the two front support rollers R1 can be moved up and down by one front lifter S1, and the two rear support rollers R2 can be moved up and down by one rear lifter S2. ing. Instead of this, two front lifters and two rear lifters are provided so as to form a pair in the width direction of the device M, and a front support roller is directly attached to the upper end of the piston of each front lifter. A rear support roller may be directly attached to the upper end of the piston.

  As described above, the empty cylindrical container D to be cleaned is carried into the apparatus M with the opening Dh at one end thereof directed toward the rear of the cleaning apparatus M, so that the piston of the front lifter S1 protrudes. By setting the amount larger than the piston protrusion amount of the rear lifter S2, the cylindrical container D can be supported in a state where the opening Dh of the cylindrical container D is inclined so as to be directed obliquely downward. In the present embodiment, the inclination angle of the cylindrical container D is set within a range of about 15 to 30 degrees.

A rear positioning roller R7 for positioning the rear end upper portion of the cylindrical container D is disposed at the upper rear portion of the cylindrical container D supported in an inclined state.
The above-described front and rear lifters S1 and S2 and the front and rear support rollers R1 and R2 constitute the main part of the “container support means for supporting the cylindrical container with the opening directed obliquely downward”. ing.

Thus, by maintaining the cylindrical container D in an inclined state in which the opening Dh is directed obliquely downward, a part of the thixotropic residue adhering to the inner surface of the container after the container D is emptied, It is also possible to flow down along the inner surface of the container and discharge it to the outside of the container D.
In order to collect the discharged residual paint, a collection hopper 14 is disposed below the opening Dh of the cylindrical container D supported in an inclined state. Further, below the collection hopper 14, the collected residual paint is collected. Is provided with a residual paint tank 15. The collection hopper 14 is attached to the apparatus frame 1, and preferably a residual paint tank 15 is also attached to the apparatus frame 1.

On the other hand, above the cylindrical container D supported in an inclined state, there is a pair of drive rollers R3 that form a pair in the width direction of the apparatus M in order to rotate the cylindrical container D about its longitudinal axis Ld. Has been placed. The drive roller R3 is, for example, an electric type, and is supported by a cylinder device S3 fixed to the front / rear connecting frame 4 of the device ceiling so as to be movable in a substantially vertical direction.
When the cylinder device S3 is driven and the driving roller R3 is pressed against the upper side of the cylindrical container D supported in an inclined state, the driving roller R3 is rotated, so that the cylindrical container D is moved in the longitudinal axis Ld. And can be rotated in a predetermined direction at a predetermined rotation speed.

  The cleaning device M includes a base boom 21 disposed so as to protrude rearward from the device frame 1, and a slide boom 27 provided so as to be slidable in the longitudinal direction along the base boom 21. . The base boom 21 is provided with a so-called ball screw mechanism 22 that extends in the longitudinal direction thereof. For example, an electric motor 23 provided with a speed reduction mechanism 24 is used to drive the ball screw mechanism 22. Provided in the department.

  A slide block 28 that is screwed into the ball screw mechanism 22 is fixed to, for example, a rear end portion of the slide boom 27, and the ball screw 22 is driven to rotate by driving the motor 23. The slide boom 27 slides at a predetermined speed along the ball screw mechanism 22 (that is, along the base boom 21). By rotating the motor 23 in a predetermined direction, the slide boom 27 is slid forward (leftward in FIG. 1) along the base boom 21, and the opening Dh is inclined obliquely downward as described above. The distal end side of the slide boom 27 can enter (advance) through the opening Dh into the cylindrical container D supported in the state. On the other hand, by switching the rotation direction of the motor 23 and driving it, the slide boom 27 can be retracted from the inside of the cylindrical container D and positioned at the standby position shown in FIG.

  Thus, by switching the rotation direction of the motor 23, the forward movement operation and the backward movement operation of the slide boom 27 with respect to the inside of the cylindrical container D can be easily switched. In this case, it is preferable to use the ball screw mechanism 22 to obtain a smooth sliding motion of the slide boom 27 with very low friction.

  A boom support portion 11 that is fixed to the device frame 1 so as to project rearward is provided at an intermediate portion in the vertical direction of the device frame 1, and the base boom 21 is disposed on the rear surface of the boom support portion 11. A pivotal support portion 25 is provided that supports the middle portion of the shaft so as to be rotatable in the vertical direction. In addition, a lifting cylinder S4 that supports the front end side of the base boom 21 and adjusts the vertical position is disposed at the front portion of the boom support portion 11. The vertical position of the front end of the base boom 21 is adjusted by driving the elevating cylinder S4 and moving the piston P4 up and down. That is, the base boom 21 can be rotated in the vertical direction around the pivotal support portion 25, and the tilt angle of the base boom 21 can be adjusted.

An inner surface cleaning means for cleaning the inner surface of the cylindrical container D is provided at the tip of the slide boom 27. Next, the inner surface cleaning means and the opening edge cleaning means for cleaning the opening edge of the cylindrical container will be described.
FIG. 4 is a perspective view schematically showing the overall configuration of the inner surface cleaning means and the opening edge cleaning means, FIG. 5 is an enlarged perspective view showing an enlarged main part of FIG. 4, and FIG. 6 is the opening edge cleaning means. 7 is a perspective view schematically showing the configuration of the bottom surface cleaning tool of the inner surface cleaning means, FIG. 8 is an explanatory view showing the bottom surface cleaning tool as viewed from the front, and FIG. FIG. 10 is an explanatory view showing the bottom surface cleaning tool and the cylindrical container as viewed from the rear, and FIG. 10 is a perspective view schematically showing a configuration of a side surface cleaning tool of the inner surface cleaning means.

  As shown in FIG. 4, an arm base 33 is fixed to the upper end (front end) of the slide boom 27 and pressed against the inner bottom surface Db of the cylindrical container D to clean the bottom surface Db (see FIG. 2). A support arm 34 for supporting the bottom blade 30 is attached. A circular holder plate 35 that holds the bottom blade 30 is fixed to the tip of the support arm 34. The bottom blade 30 is sandwiched between a pair of sandwiching plates 37, and the sandwiching plate 37 is fixed to the holder plate 35 using a bracket 36.

  In this way, the bottom blade 30 is attached so as to protrude diagonally forward and upward from the top end of the slide boom 27. The material used for the bottom blade 30 is preferably ethylene-propylene-diene rubber (EPDM). At this time, the mounting orientation and mounting posture of the bottom blade 30 are set so that the front edge of the bottom blade 30 is substantially perpendicular to the extending direction of the slide boom 27. The details of the structure of the bottom blade 30 and the clamping state of the bottom blade 30 by the clamping plate 37 will be described later.

  Further, a joint portion 41 (first joint) for supporting a side blade 40 that is pressed against the inner side surface Ds (see FIG. 2) of the cylindrical container D and cleans the side surface Ds is provided at the tip of the slide boom 27. Is provided. As shown in detail in FIG. 5, the first joint 41 includes a steel spherical body (ball) 41 b as a joint element, and a base plate 41 a and a pressing plate 41 c that protrude integrally from the tip of the slide boom 27. The holding plate 41c is fastened and fixed to the base plate 41a by using a plurality of bolts with the spherical body 41b sandwiched therebetween.

  Similar to the first joint 41, a second joint 43 including a base plate 43a, a spherical body 43b, and a pressing plate 43c is located on the front side of the first joint 41. The spherical body 43 b and the spherical body 41 b of the first joint 41 are connected to each other by a connecting rod 42. The side blade 40 is attached to the front end portion of the base plate 43 a of the second joint 43 using the holding plate 44. That is, the side blade 40 is fixed to the front end portion of the base plate 43a of the second joint 43 while being sandwiched between the front portion of the base plate 43a of the second joint 43 and the holding plate 44. ing. The side blade 40 is formed in a plate shape close to a semicircle in front view using a material having high elasticity such as rubber. In the present embodiment, EPDM is preferably used as the material of the side blade 40.

  The mounting position, mounting orientation, and mounting posture of the side blade 40 are set in a desired state three-dimensionally, and the pressing plates 41c, 43c of the first and second joints 41, 43 are fastened to the base plates 41a, 43a. By fixing the spherical bodies 41b and 43b so that they cannot rotate, a desired state can be obtained with respect to the three-dimensional mounting position, mounting orientation and mounting posture of the bottom blade 30. As described above, the side blade 40 is attached to the tip of the slide boom 27 via the joints 41 and 43 having the spherical bodies 41b and 43b as joint elements, respectively. The mounting posture can be arbitrarily adjusted three-dimensionally, and the pressing state of the side blade 40 against the side surface Ds of the cylindrical container D can be adjusted easily and precisely. The details of the pressing state of the side blade 40 against the cylindrical container side surface Ds will be described later.

Further, an opening edge blade 50 that is pressed against the opening edge Dk of the cylindrical container D and cleans the opening edge Dk is supported on one rear frame 3 in the width direction of the apparatus frame 1.
As shown in detail in FIG. 6, in the rear frame 3, the blade cylinder S <b> 6 uses a bracket 51 to move the opening edge blade 50 forward and backward relative to the opening edge Dk of the cylindrical container D. Is fixed.

  A holder plate 52 that moves forward and backward with respect to the opening edge Dk of the cylindrical container D by driving the cylinder S6 is disposed in front of the blade cylinder S6. Similar to the second joints 41 and 43, a joint 54 including a base plate 54a, a spherical body 54b, and a pressing plate 54c is located. The spherical body 54b of the joint 54 and the holder plate 52 are connected to a connecting rod 53. Are connected to each other. The opening edge blade 50 is attached to the front end portion of the base plate 54 a of the joint 54 using the holding plate 54. That is, the opening edge blade 50 is attached to the front end portion of the base plate 54 a of the joint 54 while being sandwiched between the front side portion of the base plate 54 a of the joint 54 and the holding plate 55.

The mounting orientation and mounting orientation of the opening edge blade 50 are set in a desired state three-dimensionally, and the holding plate 54c of the joint 54 is fastened and fixed to the base plate 54a to make the spherical body 54b unrotatable. Thus, a desired state can be obtained with respect to the three-dimensional mounting orientation and mounting posture of the opening edge blade 50.
The opening edge blade 50 is formed in a plate shape close to a substantially semicircular shape in a plan view using a material having high elasticity such as rubber. In the present embodiment, EPDM is preferably used as the material of the opening edge blade 50.

  A substantially U-shaped cutout 50k is provided at the approximate center of the front portion of the opening edge blade 50, and the blade cylinder S6 is driven to open the opening edge portion via the holder plate 52 and the joint 54. By moving the blade 50 forward with respect to the opening edge Dk of the cylindrical container D, the opening edge Dk fits into the notch 50k of the blade 50 for opening edge, and the inner portion 50a and the inner portion 50a with respect to the notch 50k at the front of the blade. The opening edge Dk is sandwiched between the outer portion 50b with a predetermined elastic force. That is, the inner portion 50a of the blade front portion with respect to the notch 50k is pressed against the inner surface of the opening edge Dk with a predetermined pressing force.

In this pressed state, the cylindrical container D rotates in the direction of the arrow Yd, so that the inner part 50a functions as a so-called scraper rather than the notch 50k at the front part of the blade, and the inner side of the opening edge Dk of the cylindrical container D The paint that has adhered and adhered is effectively scraped off and scraped off and collected in the collection hopper 14 located below. Thereby, in addition to the bottom face Db and the side face Ds inside the cylindrical container D, the opening edge Dk can be automatically cleaned.
When the cleaning of the inside of the cylindrical container D is completed, the blade cylinder S6 is driven, the opening edge blade 50 is retracted from the opening edge Dk of the cylindrical container D, and is maintained at the standby position shown in FIG.

  As can be clearly understood from FIGS. 7, 8, and 9, the bottom blade 30 is a first blade portion 31 that cleans the region from the peripheral edge of the bottom surface Db of the cylindrical container D to the middle portion from the center Dc of the bottom surface Db. And the first blade portion 31 is inclined by a predetermined angle α (see FIG. 9) so that the distal end side is located on the upstream side in the rotation direction of the cylindrical container D (FIG. 9: arrow Yd direction). , And a second blade portion 32 for cleaning a region from the midway portion to the center Dc. In the present embodiment, the first and second blade portions 31 and 32 are configured as separate blade bodies. Instead, both the blade portions 31 and 32 can be integrally formed. Both the first and second blade portions 31 and 32 are formed in a substantially rectangular plate shape in plan view using a material having high elasticity such as rubber. In the present embodiment, EPDM is preferably used as the material for the bottom blade 30.

  The rear portion of the first blade portion 31 is sandwiched between the pair of sandwiching plates 37 (first sandwiching plate), and one end side of the lower second sandwiching plate 38 is welded to the upper first sandwiching plate, for example, by welding. It is fixed in an inclined shape (inclination angle: α). The rear portion of the second blade portion 32 is sandwiched between the lower second clamping plate 38 and the upper second clamping plate 38 that forms a pair. In the present embodiment, the inclination angle α of the second blade portion 32 is set within a range of about 15 to 60 degrees, for example.

  Here, the end 31s of the first blade portion 31 corresponding to the peripheral side of the cylindrical container bottom surface Db is set so as to protrude by a predetermined length from the first clamping plate 37, and the entire end 31s can be easily elastically deformed. It is like that. Since the end 31s of the first blade portion 31 can be easily elastically deformed, the end 31s is elastically deformed along the R shape Dr (see FIG. 9) of the peripheral edge of the cylindrical container bottom surface Db. Residual paint can also be scraped off. The cylindrical container D to be cleaned by the cleaning device M is a so-called pan-bottom type in which R at the peripheral edge of the bottom surface Db is relatively large from the viewpoint of avoiding adhesion paint remaining on the peripheral edge of the bottom surface Db. Are preferred.

  In order to clean the inner surface (the bottom surface Db and the side surface Ds) of the cylindrical container D with the bottom surface blade 30 and the side surface blade 40, the motor 23 at the rear end of the base boom 21 is driven to rotate in a predetermined direction, thereby moving the slide boom. 27 is advanced from the standby position shown in FIG. 1, and the front end side of the slide boom 27 is caused to enter (advance) through the opening Dh into the cylindrical container D supported in the above-described inclined state. At this time, the front end side of the slide boom 27 is lifted to a predetermined amount or more by the lift cylinder S4 so that the side blade 40 does not interfere with the inner side surface Ds of the cylindrical container D.

Then, when the slide boom 27 is further advanced and the tip edge portion of the bottom blade 30 reaches a predetermined position close to or partially in contact with the bottom surface Db of the cylindrical container D, the driving of the motor 23 is stopped. The forward movement of the slide boom 27 ends.
Next, the lift cylinder S4 is driven to lower the piston P4, and the tip end side of the base boom 21 (that is, the slide boom 27) is lowered by a predetermined amount. As a result, the slide boom 27 rotates about the pivot 25 in the counterclockwise direction in FIG.

  In this embodiment, by rotating the slide boom 27 until the slide boom 27 is substantially parallel to the longitudinal axis Ld of the cylindrical container D, the side blade 40 held on the distal end side of the slide boom 27. Is pressed against the side surface Ds of the cylindrical container D with a predetermined pressing force. At the same time, the bottom blade 30 is pressed with a predetermined pressing force while being kept substantially parallel to the bottom surface Db of the cylindrical container D.

  If there is no support by the lifting cylinder S4, the bottom blade 30 and the side blade 40 are pushed excessively by the moment load based on their own weights such as the base boom 21 and the slide boom 27 and various members attached thereto. In this embodiment, the slide boom 27 is substantially aligned with the longitudinal axis Ld of the cylindrical container D by the lowering of the piston P4 of the elevating cylinder S4. The bottom boom 30 and the side blades 40 are rotated with a suitable pressing force from the viewpoint of scraping function, durability, and the like, by rotating the slide boom 27 until they are parallel to each other. It is set so that it can be pressed against.

  As described above, the side blade 40 is attached to the tip of the slide boom 27 supported so as to be slidable back and forth with respect to the base boom 21 supported so as to be pivotable up and down by the pivot support portion 25, and the tip side of the base boom 21 is moved up and down. By supporting the cylinder S4 so that the vertical position can be adjusted, the bottom blade 30 and the side blade 40 are brought into contact with the inner bottom surface Db and the inner surface Ds of the cylindrical container D as required, with a relatively simple configuration. Can be separated.

Thus, in this embodiment, the base boom 21, the slide boom 27, and the elevating cylinder S4 are "bottom surface cleaning tool pressing means for pressing the bottom surface cleaning tool (bottom blade)" against the inner bottom surface of the cylindrical container. The cleaning tool (side blade) presses against the inner side surface of the cylindrical container.
Instead of this, the bottom surface cleaning tool pressing means and the side surface cleaning tool pressing means are provided separately, and the bottom blade is pressed against the bottom surface of the cylindrical container to clean the bottom surface, and then the side blade is It can also be configured to press against the side of the container.

  As described above, the cylindrical container D rotates in the direction of the arrow Yd in a state where the bottom blade 30 is pressed with a predetermined pressing force while being kept substantially parallel to the bottom surface Db of the cylindrical container D. Thus, the bottom blade 30 acts as a so-called scraper, and the paint remaining on the bottom surface Db of the cylindrical container D is effectively scraped off. Thereby, the bottom face Db inside the cylindrical container D can be automatically cleaned.

  In this embodiment, the blade body including the first blade portion 31 has a length exceeding the center Dc of the bottom surface Db from the peripheral portion of the bottom surface Db of the cylindrical container D. According to experience, with only the blade body having such a length, the adhering residual paint can be effectively scraped off and the sufficient cleaning effect can be stably obtained at the center Dc of the bottom surface Db and the vicinity thereof. was difficult.

  Therefore, in the present embodiment, by providing the second blade portion 32 in addition to the first blade portion 31, a region from the middle portion from the peripheral edge portion of the bottom surface Db to the center Dc of the bottom surface Db to the center Dc is exceeded. It is designed to be cleaned. By providing the second blade portion 32, the remaining paint adhered to the center Dc of the bottom surface Db and the vicinity thereof was scraped sufficiently effectively, and a stable cleaning effect could be obtained.

In this manner, when the cleaning of the bottom surface Db of the cylindrical container D by the bottom surface blade 30 is finished, the cleaning of the side surface Ds by the side surface blade 40 is started.
That is, the base boom 21 is in a state where the side blade 40 is pressed against the side surface Ds of the cylindrical container D with a predetermined pressing force and the cylindrical container D is continuously rotating in the direction of the arrow Yd. By rotating the rear end motor 23 in the reverse direction to move the slide boom 27 backward at a predetermined speed, the side blade 40 acts as a so-called scraper, and the paint remaining on the side surface Ds of the cylindrical container D is scraped. Taken. Thereby, the side surface Ds inside the cylindrical container D can be automatically cleaned.

  In addition, when cleaning the side surface Ds inside the cylindrical container D with such a side blade 40, it is conceivable to hold the blade 40 along the surface including the longitudinal axis Ld of the cylindrical container D. According to their experience, when the side surface Ds is cleaned while holding the side surface blade 40 in this way, the adhering paint remains spirally on the side surface Ds, and a sufficient cleaning effect is stably obtained. It was difficult.

  Therefore, in the present embodiment, as shown in FIG. 10, the side blades 40 are arranged on the rear side (side closer to the cylindrical container opening Dh: the side of the plane Fd including the longitudinal axis Ld of the cylindrical container D: FIG. 10 (lower side in FIG. 10) is tilted so as to be located on the downstream side (left side in FIG. 10) in the rotation direction of the cylindrical container D (tilt angle: β) so as to press against the inner side surface Ds of the cylindrical container D. did. In the present embodiment, the inclination angle β is set within a range of about 15 to 45 degrees, for example.

  Thereby, the adhering paint did not remain spirally on the side surface Ds, but the remaining paint adhering sufficiently effectively was scraped off, and a stable cleaning effect could be obtained. This is because the residual paint scraped off by the side blade 40 easily flows to the container opening Dh side along the edge of the side blade 40, and the cleaned region at the end of the blade 40 (FIG. 10). This is considered to be due to the suppression of re-adhesion around the left side area) of the blade. In FIG. 10, the rotation direction of the cylindrical container D is indicated by an arrow Yd, and the retreating direction of the side blade 40 is indicated by an arrow Ys.

In the above explanation, ethylene-propylene-diene rubber (EPDM) is preferably used as the material of the blades 30, 40, 50 for the bottom surface, the side surface, and the opening edge portion. The material is not limited to EPDM, and various other rubbers or synthetic resins can be suitably used. Furthermore, metal materials such as stainless steel and mild steel can be used depending on conditions.
Examples of the rubber material include diene rubber (eg, natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, chloroprene rubber, acrylonitrile butadiene rubber) or non-diene rubber (eg, butyl rubber, ethylene propylene rubber, urethane rubber, silicone). Any rubber such as rubber, chlorosulfonated rubber, chlorinated polyethylene rubber, acrylic rubber, epichlorohydrin rubber, fluorine rubber, etc. can be suitably used. As the synthetic resin material, for example, polyethylene, polypropylene, polystyrene, vinyl chloride, silicon resin, fluororesin, and the like are suitable.

  In addition, although not specifically illustrated, a cleaning liquid or a solvent (for example, in the present embodiment) adapted to the removal of residual paint adhered to the inner surfaces Db and Ds of the cylindrical container D is provided on the distal end side of the slide boom 27. A spray nozzle is attached to spray and supply a commercially available alkaline metal detergent) to the inner surfaces Db and Ds of the cylindrical container D. The spray nozzle is connected to the commercially available alkaline metal via a pipe tube. It is connected to a pump device that dispenses detergent.

  The supply of the alkaline detergent cannot be easily removed only by the scraping action using the elastic blades 30, 40, 50, such as when the viscosity of the attached residual paint is too high or when at least a part of the paint is solidified. In some cases, it is performed for the purpose of reducing the viscosity of the residual paint. Moreover, a synergistic effect with the cleaning agent used in the finishing cleaning is obtained by adhering a cleaning agent different from the cleaning liquid and the detergent used in the finishing cleaning process described later to the container inner surfaces Db and Ds and infiltrating the remaining paint slightly. The purpose is to enable more effective cleaning. More specifically, in the finish cleaning process described later, particularly when jet cleaning is performed, the cleaning liquid to be used is limited to those with less foaming, but in the cleaning process by scraping using the cleaning device M, There is no such limitation on the cleaning agent, and for example, a cleaning agent having good foaming and strong surface activity can be used. By attaching such a cleaning agent to the container inner surfaces Db and Ds and infiltrating the residual paint, finishing cleaning is very easy and effective due to a synergistic effect with the cleaning agent used in the finishing cleaning in the subsequent process. It can be done.

  Regardless of the main purpose, the amount of detergent used in the cleaning process using the cleaning device M is very small. In addition, when supplying this alkaline detergent to the inner surfaces Db and Ds of the cylindrical container D, if supplied in a sprayed state, there is a possibility that mist droplets may scatter to the periphery of the device M. In such a case, if necessary, It is preferably performed under pressure conditions or the like that are supplied in the form of bubbles or jetted and supplied to the inner surfaces Db and Ds as droplets. Further, the detergent may be supplied after being heated as necessary.

  Although not specifically shown, the cleaning device M is provided with a control unit including, for example, a microcomputer as a main part in order to suitably control the operation thereof. 23, various control elements such as a driving roller R3, lifters S1, S2, cylinder devices S3, S, S5 and a pump device for supplying a cleaning agent are connected to the control unit so as to be able to send and receive signals. Are controlled.

The outline of the cleaning process of the cylindrical container D by the cleaning device M configured as described above will be described with reference to the process flowchart of FIG.
The cleaning of the cylindrical container D by the cleaning device M is performed as a preceding process prior to the final finishing cleaning process in which the inner surfaces Db and Ds of the cylindrical container D are cleaned and then dried using a cleaning liquid or a detergent. It is what is said.

  In the process flowchart, the cylindrical container D, which has been emptied without any internal paint, is placed in the apparatus M in a state where the opening Dh at one end thereof is directed to the rear (right side in FIG. 1). The state in which the lower part of the front end of the cylindrical container D is carried in and positioned by the front positioning roller R6 is an initial state.

  When the control of the cleaning device M is started in this initial state, first, in step # 1, the cylindrical container is brought into the aforementioned inclined state. That is, the lifters S1 and S2 are driven with the piston protrusion amount of the front lifter S1 set larger than the piston protrusion amount of the rear lifter S2, and the opening Dh of the cylindrical container D is inclined obliquely downward. The cylindrical container D is supported in the inclined state (inclination angle: approximately 15 degrees). In the case of a paint having low thixotropy, only by maintaining the cylindrical container D in this inclined state, a considerable part of the residual paint adhering to the inner surface of the container is dripped, and the residual paint tank 15 is collected from the collecting hopper 14. Collected within.

  Next, in step # 2, the motor 23 is driven to start the forward movement of the slide boom 27. At this time, as described above, the front end side of the slide boom 27 is lifted to a predetermined amount or more by the lifting cylinder S4 so that each blade does not interfere with the inner surface Ds of the cylindrical container D.

  Further, the rotation of the cylindrical container D is started at step # 3. That is, by driving the cylinder device S3 and pressing the rotating drive roller R3 on the upper side of the inclined cylindrical container D, the cylindrical container D is rotated at a predetermined rotational speed in a predetermined direction about its longitudinal axis Ld. Rotate with. In the present embodiment, for example, the cylindrical container D is rotated at a constant speed within a range of about 10 to 20 rpm in the clockwise direction when viewed from the rear (from the opening Dh side). The step # 3 and the step # 2 may be performed at the same time, or may be performed in the reverse order.

  Further, in Step # 4, the blade cylinder S6 is driven to press the opening edge blade 50 against the opening edge Dk of the cylindrical container D, and scraping of the residual paint on the opening edge Dk is started. Thereby, the paint adhering to the inner surface side of the opening edge portion Dk is effectively scraped off and scraped off and collected in the collection hopper 14 positioned below.

  Further, when the bottom blade 30 reaches a predetermined position close to or in contact with the bottom surface Db of the cylindrical container D, the drive of the motor 23 is stopped and the forward movement operation of the slide boom 27 is finished (step # 5). The process of step # 5 and the process of step # 4 may be performed simultaneously, or the order may be reversed.

  Next, in step # 6, the lift cylinder S4 is driven to rotate the slide boom 27 until it is substantially parallel to the longitudinal axis Ld of the cylindrical container D. Thus, the bottom blade 30 and the side blade 40 are pressed against the bottom surface Db and the side surface Ds of the cylindrical container D with a suitable pressing force, respectively. As a result, scraping of the bottom surface Db starts, and the bottom surface Db is scraped by rotating the container D at least once with the bottom surface blade 30 pressed against the bottom surface Db (step # 7).

  When the bottom surface Db is scraped off, the motor 23 is rotated in the reverse direction while the side blade 40 is pressed against the side surface Ds of the cylindrical container D to retract the slide boom 27 at a predetermined speed. The side blade 40 is spirally displaced relative to the side surface Ds of the cylindrical container D, and the residual paint adhering to the side surface Ds is scraped off spirally (step # 8). In this embodiment, for example, the slide boom 27 is moved backward at a constant speed within a range of about 10 to 30 mm / second.

When cleaning the inner surface (bottom surface Db and side surface Ds) of the cylindrical container D as described above, if necessary,

Only a small amount of a required cleaning agent (for example, an alkaline detergent) can be injected and supplied to the inner surfaces Db and Ds of the cylindrical container D.

  When the side surface Ds is scraped to the opening Dh of the cylindrical container D and the slide boom 27 is retracted to the standby position shown in FIG. 1, the lifting cylinder S4 is driven to lift the front end side of the slide boom 27. The standby state is maintained (step # 9). Further, the blade cylinder S6 is driven, and the opening edge blade 50 is retracted and maintained in the standby state (step # 10).

  Further, the rotation of the driving roller R3 is stopped and separated from the cylindrical container D. Thereby, rotation of the cylindrical container D stops (step # 11). Next, the lifters S1 and S2 are driven to return to the initial state, and the cylindrical container D is held horizontally (step # 12). After that, the cylindrical container D is carried out toward a post-process station by driving a conveyance conveyor (not shown) (step # 13).

As described above, this post-process is a final finish cleaning process. The inner surface Db, Ds of the cylindrical container D is cleaned with a brush, a jet, or the like using a cleaning liquid or a detergent, and further, with pure water or the like. Drying takes place after rinsing.
A cleaning system that performs a series of cleaning processes as shown in the process flowchart of FIG. 12 is configured by the cleaning apparatus M and various apparatuses that perform final finishing cleaning in a subsequent process.

  That is, when the above-described scraping cleaning process (process ST1) by the cleaning device M is completed, brush cleaning is performed in process ST2. This brush cleaning step is a step of cleaning the inner surfaces Db and Ds of the cylindrical container mainly by rubbing the inner surfaces Db and Ds with a brush while spraying a predetermined cleaning agent inside the cylindrical container D. As the brush cleaning device used in this step, those equipped with various known mechanisms can be used. Further, in this step, for example, an alkaline cleaning agent, more preferably one having relatively little foaming is used.

  When the brush cleaning process is completed, jet cleaning is then performed in process ST3. This jet cleaning step is a step of cleaning the inner surfaces Db and Ds of the cylindrical container by spraying a jet of a predetermined cleaning liquid into the cylindrical container D using a high-pressure spray. In this jet cleaning process, more preferably, the primary jet cleaning in which the cleaning liquid is heated to, for example, about 60 ° C. and sprayed with a jet jet, and the secondary jet cleaning in which a normal temperature cleaning liquid is sprayed as a jet jet after the primary jet cleaning is performed. By performing the steps separately, a higher cleaning effect can be obtained. As the jet cleaning apparatus used in this step, those equipped with various known mechanisms can be used. In this step, for example, an alkaline cleaning liquid with less foaming is used.

  When applying a cleaning agent in the above-described scraping cleaning process (step ST1) by the cleaning device M, as described above, a cleaning agent having good foaming and strong surface activity is used, unlike brush cleaning and jet cleaning. Can do. By attaching such a cleaning agent to the container inner surfaces Db and Ds and infiltrating the residual paint, a synergistic effect with the cleaning agent / cleaning liquid used in brush cleaning (step ST2) and jet cleaning (step ST3) in the subsequent step is performed. As described above, finishing cleaning by brush cleaning and jet cleaning can be performed very easily and effectively.

  When the jet cleaning process is completed, the cleaned cylindrical container inner surfaces Db and Ds are rinsed (process ST4). This rinsing is performed using, for example, pure water, and a higher rinsing effect can be obtained by performing the rinsing separately for the primary rinsing step and the secondary rinsing step performed thereafter.

  When this rinsing step is completed, draining by air blow using compressed air is performed (step ST5), and further, drying (step ST6) is performed. In this drying process, the cleaned cylindrical container D is held at a temperature of about 110 ° C. for about 5 to 10 minutes, so that moisture is removed. After that, a final check inside the cylindrical container D (process ST7) is performed, and the open end Dh of the cylindrical container D is closed with a lid (process ST8), and then it is carried out toward the storage area of the cleaned cylindrical container D. Is done.

  In the example of FIG. 12, the jet cleaning (step ST3) is performed after the brush cleaning (step ST2). However, the order of these cleaning steps is not limited to the above, and the steps are performed in the reverse order. It may be broken. Further, the number of times of brush cleaning and jet cleaning is not limited to one each, and may be performed a plurality of times.

  As described above, in the cleaning system according to this embodiment, prior to the final finish cleaning process, the cleaning device M is used to retain the inner surface (bottom surface Db, side surface Ds) and the opening edge portion Dk of the cylindrical container D. Since the paint is scraped off sufficiently effectively, there is very little residual paint mixed in the cleaning liquid and detergent used in the finishing cleaning process in the subsequent process, and these cleaning liquids and detergents are repeated many times. It becomes possible to use. Therefore, it is possible to significantly reduce the cost burden related to the cleaning liquid and the detergent, and it is possible to effectively suppress the environmental load related to the waste liquid treatment.

  Further, as described above, according to the cleaning device M according to the present embodiment, the cylinder that is supported in a state in which the opening Dh is directed obliquely downward and is rotated in a predetermined direction about the longitudinal axis Ld. With respect to the container D, the bottom blade 30 and the side blade 40 are advanced to a predetermined position inside the cylindrical container D, and the cylindrical container D is moved a predetermined number of times while the bottom blade 30 is pressed against the inner bottom surface Db of the cylindrical container D. After the rotation, the side blade 40 is moved along the inner side surface Ds of the cylindrical container D while maintaining the state where the side blade 40 is pressed against the inner side surface Ds of the cylindrical container D and the rotating state of the cylindrical container D. By retreating, the thixotropic residue adhering to the bottom surface Db and the side surface Ds inside the cylindrical container D is automatically removed, and the bottom surface Db and the side surface Ds inside the cylindrical container D are shared. It is possible to efficiently clean.

  Needless to say, the present invention is not limited to the above-described embodiment, and changes and improvements can be made without departing from the scope of the invention.

  The present invention relates to a cleaning device and a cleaning system for a cylindrical container, and can automatically remove thixotropic residues adhering to the bottom surface and the side surface inside the cylindrical container so that both the bottom surface and the side surface can be efficiently cleaned. For example, for a cylindrical container having an opening at one end, such as a drum can for storing, storing, and transporting thixotropic contents such as paint and ink, the thixotropy attached to the inner surface of the container after the container is emptied The present invention can be effectively used as a cleaning device and a cleaning system for automatically removing the residue and cleaning the inner surface.

It is side explanatory drawing which shows roughly the whole structure of the cleaning apparatus of the cylindrical container which concerns on embodiment of this invention. It is an expanded sectional view which expands and shows the said cylindrical container supported in the inclined state. It is the arrow line view which showed the said cleaning apparatus seeing from the Y3-Y3 arrow direction in FIG. It is a perspective view which shows roughly the whole structure of the inner surface cleaning means and opening edge part cleaning means of the said cleaning apparatus. It is an expansion perspective view which expands and shows the principal part of FIG. It is a perspective view which shows schematically the structure of the said opening edge part cleaning means. It is a perspective view which shows roughly the structure of the bottom face cleaning tool of the said inner surface cleaning means. It is explanatory drawing which showed the said bottom surface cleaning tool seeing from the front. It is explanatory drawing which showed the said bottom face cleaning tool and the cylindrical container seeing from back. It is a perspective view which shows roughly the structure of the side surface cleaning tool of the said inner surface cleaning means. It is a process flowchart for demonstrating the cleaning process of the cylindrical container by the said cleaning apparatus. It is a process flowchart for demonstrating the cleaning system of the cylindrical container which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus frame 21 Base boom 22 Ball screw mechanism 23 Motor 25 Pivoting part 27 Slide boom 28 Slide block 30 Blade for bottom face 31 First blade part (for bottom face blade) 32 Second blade part (for bottom face blade) 40 Side blade 50 Blade for Opening Edge D Cylindrical Container Db Bottom of Dc (Cylindrical Container) Center of Bottom Dc (Cylindrical Container) Dh Opening of Cylindrical Container Dk Opening Edge of Cylindrical Container Ds Side of Cylindrical Container Fd (including cylindrical container) Longitudinal axis Ld (cylindrical container) Longitudinal axis M Cleaning device R1 Front support roller R2 Rear support roller R3 Drive roller S1 Front lifter S2 Rear lifter S4 Lift cylinder S6 Blade cylinder α Inclination angle of the second blade part (of the bottom blade) β Side blade Angle of inclination

Claims (8)

A cylindrical container cleaning device that removes thixotropic residue attached to the inner surface of a cylindrical container having an opening at one end and cleans the inner surface,
Container support means for supporting the cylindrical container with the opening directed obliquely downward;
Container rotating means for rotating the cylindrical container supported by the container supporting means in a predetermined direction about its longitudinal axis;
An inner surface cleaning means comprising: a bottom surface cleaning tool pressed against the inner bottom surface of the cylindrical container to clean the bottom surface; and a side surface cleaning tool pressed against the inner side surface of the cylindrical container to clean the side surface;
Advancing / retreating means for advancing / retreating the inner surface cleaning means with respect to the inside of the cylindrical container through the opening;
A bottom surface cleaning tool pressing means for pressing the bottom surface cleaning tool against the inner bottom surface of the cylindrical container;
Side cleaning tool pressing means for pressing the side cleaning tool against the inner side surface of the cylindrical container;
Control means for controlling each of the means,
The control means is configured such that the advance / retreat means advances the inner surface cleaning means to a predetermined position inside the cylindrical container, and the bottom surface cleaning tool pressing means presses the bottom surface cleaning tool against the inner bottom surface of the cylindrical container. After the container has rotated a predetermined number of times, the advancing / retracting means maintains the state in which the side surface cleaning tool pressing means presses the side surface cleaning tool against the inner side surface of the cylindrical container and the rotational state of the cylindrical container, Controlling the cleaning tool pressing means to retreat along the inner side of the cylindrical container;
A cylindrical container cleaning device. The thixotropic residue is a B-type viscometer having a content η ₆ at 6 rpm and a ratio η ₆ / η ₆₀ of ₆₀ rpm at a value η ₆ / η ₆₀ of 2 or more. The cylindrical container cleaning apparatus according to claim 1. The advancing / retreating means includes a base boom having one end located near the opening of the cylindrical container and extending obliquely downward, and an inner surface cleaning means at one end, and is slidable along the longitudinal direction of the base boom. A slide boom supported by the base boom,
The base boom is supported so as to be rotatable in the vertical direction around the pivotal support, and the side closer to the opening of the cylindrical container than the pivotal support is supported so as to be lifted and lowered by the lifting means.
The base boom is pivoted downward about the pivot portion by the lowering operation of the lifting means, the bottom surface cleaning tool is pressed against the inner bottom surface of the cylindrical container, and the side surface cleaning tool is the inner side surface of the cylindrical container. Pressed against
The cylindrical container cleaning device according to claim 1, wherein the cleaning device is a cylindrical container cleaning device.   The cylindrical container cleaning according to claim 1, further comprising an opening edge cleaning tool that is pressed against the opening edge of the cylindrical container to clean the opening edge. apparatus.   The side surface cleaning tool includes an elastic blade, and the elastic blade is positioned such that a side close to the opening of the cylindrical container is located downstream of the surface including the longitudinal axis of the cylindrical container in the rotational direction of the cylindrical container. The cylindrical container cleaning device according to any one of claims 1 to 4, wherein the cylindrical container cleaning device is pressed against an inner side surface of the cylindrical container in an inclined state.   The bottom surface cleaning tool includes an elastic blade, and the elastic blade is inclined with respect to the first blade portion and a first blade portion that cleans a region from the peripheral portion of the bottom surface of the cylindrical container to the middle portion of the cylindrical container. 6. The cylindrical container cleaning device according to claim 1, further comprising a second blade portion that cleans a region from the middle portion to the center. .   The cleaning device for a cylindrical container according to any one of claims 1 to 6, further comprising cleaning agent supplying means for supplying and supplying a predetermined cleaning agent to the inner surface of the cylindrical container. A cylindrical container cleaning system that removes thixotropic residues attached to the inner surface of a cylindrical container having an opening at one end and cleans the inner surface,
A cylindrical container cleaning device according to any one of claims 1 to 7,
A brush cleaning device for cleaning the inner surface of the cylindrical container by supplying a cleaning agent to the inner surface of the cylindrical container and rubbing the inner surface with a brush, and / or the cylindrical container by spraying a jet of cleaning liquid onto the inner surface of the cylindrical container A jet cleaning device for cleaning the inner surface of
After cleaning by the cleaning device, cleaning by the brush cleaning device and / or cleaning by the jet cleaning device is performed.
A cylindrical container cleaning system.

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