Cleaning device, container, and cleaning method

Abstract

To provide a cleaning device, a container, and a cleaning method, which can efficiently clean a member to be a cleaning object by enhancing a degree of freedom in design related to an injection mode of cleaning fluid.SOLUTION: A container includes: a container body having a storage space for storing an object; a pipe body provided in the container body; and a cleaning device 12 for cleaning a manhole lid body (member) with cleaning fluid K. The cleaning device 12 includes: an annular body section 58; a plurality of injection sections 60 configured to inject the cleaning fluid K; and a cleaning fluid supply port 62 configured to supply the cleaning fluid K to each injection section 60. Each injection section 60 has a pressure chamber 74 formed in the body section 58 and a pair of injection holes 76a, 76b to allow an inside space U1 to communicate with the pressure chamber 74. The pair of injection holes 76a, 76b is formed in a manner that the center lines L1, L2 of the injection holes cross at one intersection point P so that the cleaning fluid K injected in a columnar shape from the injection holes collides with each other and spreads in a fan shape.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a cleaning device used for spraying a cleaning liquid onto a component to clean it, a container equipped with the cleaning device, and a cleaning method using the cleaning device. [Background technology]

[0002] An example of a conventional cleaning device is described in the following Patent Document 1. This cleaning device includes a ring-shaped cleaning device main body attached to a tube, and a plurality of cleaning liquid jetting ports provided in the cleaning device main body. Each cleaning liquid jetting port is formed on the inner wall of the cleaning device main body so that the object to be cleaned can be cleaned with the jetted cleaning liquid. When the object to be cleaned is cleaned using this cleaning device, the cleaning liquid jetted in a columnar shape from each cleaning liquid jetting port is applied in a dotted manner to the object to be cleaned.

[0003] However, in a spraying mode in which the cleaning liquid is sprayed in dots on the object to be cleaned, i.e., a dot-like spraying mode, there is a problem that it is difficult to efficiently clean the object to be cleaned because of the low degree of freedom in design. In other words, in order to evenly clean a wide area of ​​the object to be cleaned with a dot-like spraying mode, it is necessary to increase the number of cleaning liquid spraying ports and finely adjust the spray direction of the cleaning liquid, but in this case, the degree of freedom in design regarding the spraying mode is greatly limited from the cost and technical standpoints, so in the end, it is not possible to efficiently clean the object to be cleaned.

[0004] The following Patent Document 2 describes a spray nozzle having a pair of nozzles for spraying liquid in a fan shape. However, this spray nozzle is used for spraying agricultural chemical water, and no consideration was given to its use for cleaning objects to be cleaned. Therefore, this spray nozzle and the cleaning liquid nozzle of Patent Document 1 are completely different in shape and size, and it was not easy to combine this spray nozzle with the cleaning liquid nozzle of Patent Document 1. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-211961 A [Patent Document 2] Japanese Utility Model Application Publication No. 49-143005 Summary of the Invention

[0006] The present invention has been made to address the above-mentioned problems, and its purpose is to provide a cleaning device, container, and cleaning method that can efficiently clean the components to be cleaned by increasing the design freedom regarding the spraying pattern of the cleaning liquid.

[0007] In order to achieve the above-mentioned object, a cleaning device according to the present invention is characterized in that it is a cleaning device for cleaning a member with a cleaning liquid, comprising: a ring-shaped main body portion; at least one spray portion configured to spray cleaning liquid toward the member; and a cleaning liquid supply port configured to supply cleaning liquid to the spray portion, wherein the spray portion has a pressure chamber formed inside the main body portion; and a pair of spray holes formed on an inner periphery of the main body portion and communicating an inner space secured radially inward of the main body portion with the pressure chamber, the cleaning liquid supply port being communicated with the pressure chamber, and the pair of spray holes being formed such that their center lines intersect at one intersection so that cleaning liquid sprayed in columns from the spray holes collides with each other and spreads out in a fan shape.

[0008] This cleaning device allows for greater freedom in designing the spray pattern of the cleaning liquid, and can efficiently clean the component to be cleaned. In other words, with this cleaning device, the cleaning liquid sprayed in columns from a pair of spray holes collides with each other and spreads out in a fan shape, so that by appropriately selecting the positions, sizes, and directions of the pair of spray holes, the spray pattern of the cleaning liquid can be appropriately determined according to the position and shape of the component.

[0009] According to this cleaning device, since each of the pair of injection holes of the injection part can be formed as a through hole having a simple shape, the injection part can be easily processed. Also, adhesion of foreign matter to the injection part can be suppressed, and thus contamination can be suppressed.

[0010] Another feature of the cleaning device according to the present invention is that it comprises a plurality of jetting portions arranged at a distance from each other in the circumferential direction of the main body portion, and the pressure chambers of each of the plurality of jetting portions are connected to each other in an annular manner.

[0011] With this cleaning device, it is possible to increase the degree of freedom in designing the spraying mode of the cleaning liquid for each of the multiple spray parts, and it is possible to clean components more efficiently. In addition, since the pressure chambers of each of the multiple spray parts are connected to each other in an annular shape, it is not necessary to provide a cleaning liquid supply port for each spray part, which simplifies the structure and reduces manufacturing costs.

[0012] Another feature of the cleaning device of the present invention is that when a bisector that bisects the angle formed by the center lines of each of a pair of the injection holes is used as a reference line, and a virtual plane perpendicular to the center line of the main body is used as a first reference plane, the injection portion is configured so that the reference line intersects with the first reference plane.

[0013] According to this cleaning device, the spray unit is configured so that the reference line intersects with the first reference plane, so that the cleaning liquid can be sprayed at an angle toward one of the two open ends of the main body. Therefore, for example, when a cover or the like that covers the opening is disposed on one of the two open ends of the main body, the inner surface of the cover can be efficiently cleaned.

[0014] Another feature of the cleaning device according to the present invention is that when one of the pair of injection holes is designated as a first injection hole and the other is designated as a second injection hole, the inner diameter of the first injection hole is set to be larger than the inner diameter of the second injection hole.

[0015] In this cleaning device, since the inner diameter of the first injection hole is larger than the inner diameter of the second injection hole, the flow of cleaning liquid injected from the first injection hole is stronger than the flow of cleaning liquid injected from the second injection hole. Therefore, according to this cleaning device, by adjusting the inner diameters of the first injection hole and the second injection hole, the cleaning liquid can be injected in any direction. For example, even if the first reference line is parallel to the reference plane, the cleaning liquid can be injected at an angle toward one of the two opening ends of the main body.

[0016] Another feature of the cleaning device of the present invention is that when a bisector that bisects the angle formed by the center lines of each of a pair of the injection holes is used as a reference line, and a virtual plane perpendicular to the center line of the main body is used as a first reference plane, the inclination angle of the reference line with respect to the first reference plane in at least one of the injection parts is determined to be different from the inclination angle of the reference line with respect to the first reference plane in at least one other of the injection parts.

[0017] According to this cleaning device, the cleaning liquid can be sprayed in two different directions, so that the members can be cleaned more efficiently.

[0018] Another feature of the cleaning device of the present invention is that when a bisector that bisects the angle formed by the center lines of a pair of the injection holes is used as a reference line, and an imaginary plane including the center line of the main body and the intersection point is used as a second reference plane, the angle formed by the reference line and the second reference plane when viewed from the direction in which the center line of the main body extends is set within the range of 10 degrees to 60 degrees.

[0019] According to this cleaning device, the spray direction of the cleaning liquid is inclined from the direction from the intersection point toward the center line of the main body when viewed from the direction along which the center line of the main body extends, so that a swirling flow of the cleaning liquid can be generated around the center line of the main body, thereby lengthening the time that the cleaning liquid remains on the surface of the component, and the component can be cleaned more efficiently.

[0020] Another feature of the cleaning device according to the present invention is that when a bisector that bisects the angle formed by the center lines of each of the pair of injection holes is used as a reference line, a virtual plane perpendicular to the center line of the main body is used as a first reference plane, and a virtual plane including the center lines of each of the pair of injection holes is used as a third reference plane, the injection portion is configured so that the third reference plane is inclined with respect to the first reference plane when viewed from the direction in which the reference line extends.

[0021] When the third reference plane is not inclined with respect to the first reference plane when viewed from the direction in which the reference line extends, that is, when the third reference plane is parallel to the first reference plane, the surface of the cleaning liquid spreading in a fan shape is perpendicular to the first reference plane. When this cleaning liquid is used to clean the inner surface of the lid that closes the opening of the main body, the cleaning liquid that hits the inner surface of the lid flows linearly along the inner surface, resulting in low cleaning efficiency. On the other hand, in the cleaning device having the above configuration, since the third reference plane is inclined with respect to the first reference plane when viewed from the direction in which the reference line extends, the surface of the cleaning liquid that spreads in a fan shape is not perpendicular to the first reference plane. Therefore, when this cleaning liquid is used to clean the inner surface of the lid that closes the opening of the main body, the cleaning liquid that hits the inner surface of the lid flows planarly along the inner surface, resulting in high cleaning efficiency.

[0022] Another feature of the cleaning device according to the present invention is that it comprises at least one auxiliary injection part configured to inject cleaning liquid toward a member, the auxiliary injection part having an auxiliary pressure chamber formed inside the main body and communicating with the pressure chamber, and one auxiliary injection hole formed on the inner periphery of the main body and communicating the inner space with the auxiliary pressure chamber, the auxiliary injection hole being provided between two of the injection parts lined up in the circumferential direction of the main body.

[0023] According to this cleaning device, the auxiliary jet part can clean components that are difficult to clean using only the jet part. In addition, since one auxiliary jet hole of the auxiliary jet part is provided between two jet parts aligned in the circumferential direction of the main body, the cleaning liquid sprayed from one auxiliary jet hole of the auxiliary jet part is unlikely to interfere with the cleaning liquid sprayed from the pair of jet holes of the jet part, and the momentum of these cleaning liquids can be prevented from weakening.

[0024] In order to achieve the above-mentioned object, a container according to the present invention is characterized in that it comprises a container body having a storage space for storing an object, a tubular body provided in the container body, and a cleaning device for cleaning a member with a cleaning liquid, the cleaning device comprising an annular main body portion attached to the tubular body, at least one spray portion configured to spray cleaning liquid toward the member, and a cleaning liquid supply port configured to supply cleaning liquid to the spray portion, the spray portion having a pressure chamber formed inside the main body portion, and a pair of spray holes formed on the inner periphery of the main body portion and communicating an inner space secured radially inward of the main body portion with the pressure chamber, the cleaning liquid supply port being communicated with the pressure chamber, and the pair of spray holes being formed such that their center lines intersect at one intersection so that cleaning liquid sprayed in columns from them collides with each other and spreads out in a fan shape.

[0025] This container allows for greater freedom in designing the spray pattern of the cleaning liquid, enabling efficient cleaning of the component to be cleaned. In other words, with this container, the cleaning liquid sprayed in columns from the pair of spray holes collides with each other and spreads out in a fan shape, so that by appropriately selecting the positions, sizes, and directions of the pair of spray holes, the spray pattern of the cleaning liquid onto the component can be appropriately determined according to the position and shape of the component.

[0026] According to this container, since each of the pair of injection holes of the injection part can be formed as a through hole having a simple shape, the injection part can be easily processed. Also, adhesion of foreign matter to the injection part can be suppressed, and thus contamination can be suppressed.

[0027] Another feature of the container according to the present invention is that it comprises a plurality of ejection portions arranged at a distance from one another in the circumferential direction of the main body portion, and the pressure chambers of each of the plurality of ejection portions are annularly connected to one another.

[0028] This container allows greater freedom in designing the manner in which the cleaning liquid is sprayed from each of the multiple spray parts, making it possible to more efficiently clean components. In addition, because the pressure chambers of each of the multiple spray parts are connected to each other in an annular shape, there is no need to provide a cleaning liquid supply port for each spray part, simplifying the structure and reducing manufacturing costs.

[0029] In order to achieve the above-mentioned object, a cleaning method according to the present invention is characterized in that it uses a cleaning device including a ring-shaped main body, a plurality of spray parts provided on the main body, and a cleaning liquid supply port provided on the main body for supplying cleaning liquid to the plurality of spray parts, and in that the cleaning liquid is sprayed in a fan shape from the plurality of spray parts toward a component to clean the component.

[0030] According to this cleaning method, by appropriately adjusting the inclination angle of the sector-shaped surface of the cleaning liquid, etc., it is possible to change the manner in which the cleaning liquid is sprayed onto the component, thereby enabling the component to be cleaned efficiently. [Brief description of the drawings]

[0031] [Figure 1] FIG. 2 is a cross-sectional view showing the configuration of a container and a cleaning device according to the first embodiment. [Diagram 2] FIG. 2 is a partially enlarged cross-sectional view showing the configuration of a container and a cleaning device according to the first embodiment. [Diagram 3] 1A to 1C are diagrams showing the configuration of a cleaning device according to a first embodiment, where (A) is a perspective view, (B) is a plan view, and (C) is a cross-sectional view taken along line IIIC-IIIC in (B). [Figure 4] 3A and 3B are diagrams showing the configuration of a cleaning device according to a first embodiment, in which (A) is an enlarged view of a portion IVA-IVA in FIG. 3(C), and (B) is an enlarged view of a portion IVB-IVB in FIG. 3(C). [Diagram 5] 1A to 1C are views showing a first ejection mode of the cleaning device according to the first embodiment, where (A) is a front view, (B) is a cross-sectional view taken along line VB-VB in (A), and (C) is a plan view. [Figure 6]5A to 5C are views showing a second ejection mode of the cleaning device according to the first embodiment, in which (A) is a front view, (B) is a cross-sectional view taken along line VIB-VIB in (A), and (C) is a plan view. [Figure 7] 5A and 5B are views showing a third ejection mode of the cleaning device according to the first embodiment, in which (A) is a front view and (B) is a plan view. [Figure 8] 5A and 5B are views showing a fourth ejection mode of the cleaning device according to the first embodiment, in which (A) is a front view and (B) is a plan view. [Figure 9] 5A and 5B are views showing a fifth ejection mode of the cleaning device according to the first embodiment, in which (A) is a front view and (B) is a plan view. [Figure 10] 13 is a cross-sectional view showing a usage state corresponding to a fifth ejection mode of the cleaning device according to the first embodiment. FIG. [Figure 11] 5A to 5C are views showing a sixth ejection mode of the cleaning device according to the first embodiment, in which (A) is a front view, (B) is a cross-sectional view taken along line XIB-XIB in (A), and (C) is a plan view. [Figure 12] FIG. 11 is a partially enlarged cross-sectional view showing the configuration of a container and a cleaning device according to a second embodiment. [Figure 13] FIG. 11 is a partially enlarged cross-sectional view showing the configuration of a container and a cleaning device according to a third embodiment. [Figure 14] FIG. 11 is a partially enlarged cross-sectional view showing the configuration of a container and a cleaning device according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cleaning device, a container, and a cleaning method according to embodiments of the present invention will be described below with reference to the drawings.

[0033] (Configuration of the container according to the first embodiment) Fig. 1 is a cross-sectional view showing the configuration of a container 10 and a cleaning device 12 according to the first embodiment. Fig. 2 is a partially enlarged cross-sectional view showing the configuration of a container 10 and a cleaning device 12 according to the first embodiment.

[0034] 1 is a reaction tank used for treating an object W such as a raw material in a chemical plant or the like, and includes a vessel body 14, a jacket 16, an agitator blade 18, a rotary drive unit 20, a baffle 22, and a cleaning device 12. Note that the vessel of the present invention is not limited to a reaction tank, and may be configured as a filtering device or a drying device (not shown).

[0035] As shown in FIG. 1, the container body 14 is a member that constitutes a storage space S for storing an object W, and has a cylindrical peripheral wall portion 14a, a lower wall portion 14b formed so as to close the lower opening of the peripheral wall portion 14a, and an upper wall portion 14c formed so as to close the upper opening of the peripheral wall portion 14a.

[0036] The lower wall portion 14b is formed in a curved dish shape that bulges downward, and the upper wall portion 14c is formed in a curved dish shape that bulges upward. Each of the peripheral wall portion 14a, the lower wall portion 14b, and the upper wall portion 14c has a base material (not shown) made of a metal such as low carbon steel or low carbon stainless steel, and a glass lining layer (not shown) formed on the inner surface of the base material.

[0037] A jacket 16 for heating the container body 14 is provided around the peripheral wall portion 14a and the lower wall portion 14b of the container body 14. The jacket 16 has a jacket body 16a formed so as to fit along the outer surfaces of the peripheral wall portion 14a and the lower wall portion 14b, and a heat medium passage 16b for circulating a heat medium such as steam or hot water is formed inside the jacket body 16a. When a heat medium flows through the heat medium passage 16b, the container body 14 is heated by the heat of the heat medium, and the object W contained in the storage space S is heated as well.

[0038] 1, a discharge nozzle 26 is provided on the lower part of the container body 14, i.e., the bottom wall portion 14b, and an opening / closing valve 28 is attached to the discharge nozzle 26. When replacing the object W contained in the storage space S with another object W, the object W is discharged to the outside from the discharge nozzle 26 with the opening / closing valve 28 open, and then the other object W is contained in the storage space S with the opening / closing valve 28 closed.

[0039] 1, the upper part of the container body 14, i.e., the upper wall portion 14c, is provided with an agitating blade nozzle 30, a baffle nozzle 32, and a manhole nozzle 34. More specifically, the agitating blade nozzle 30 is provided in the center of the upper wall portion 14c, and the baffle nozzle 32 and the manhole nozzle 34 are provided separately from each other on the outer periphery of the upper wall portion 14c.

[0040] 1 is a nozzle for inserting the impeller 18 into the inside of the container body 14, i.e., into the storage space S, and has a cylindrical pipe 30a constituting a pipe stand and a first flange 30b formed on the outer periphery of the tip of the pipe 30a. A lid 36 for the impeller is detachably attached to the nozzle 30 as an upper member located above the pipe 30a.

[0041] The agitator blade cover 36 is a member for covering the opening of the agitator blade nozzle 30 and supporting the agitator blade 18, and has a circular dish-shaped main body portion 36a that is curved so as to bulge upward, a support portion 36b formed in the center of the main body portion 36a, and a second flange 36c formed on the outer periphery of the main body portion 36a.

[0042] The support portion 36b is configured to rotatably support the agitating blade 18. The second flange 36c is formed to be able to face the first flange 30b of the agitating blade nozzle 30. The first flange 30b and the second flange 36c are butted against each other via a sealant (not shown) and fastened to each other using a fastener 38.

[0043] The agitator blade 18 has a rod-shaped rotating shaft 18a and a blade member 18b provided at the tip of the rotating shaft 18a. The tip of the rotating shaft 18a and the blade member 18b are disposed at the bottom of the storage space S, and the base end of the rotating shaft 18a is supported by a support portion 36b of the agitator blade cover 36 and protrudes above the support portion 36b.

[0044] The rotary drive unit 20 is a power device for applying a rotational force to the agitator 18, and has a motor 20a and a drive shaft 20b rotated by the motor 20a. The motor 20a is attached to the agitator cover 36 constituting the upper part of the container body 14 via a stand, and the drive shaft 20b is connected to the rotating shaft 18a of the agitator 18. Therefore, when the drive shaft 20b is rotated by the motor 20a, the rotating shaft 18a and the blade member 18b of the agitator 18 are rotated, and the object W contained in the storage space S is agitated.

[0045] The baffle nozzle 32 shown in FIG. 1 is a nozzle for inserting the baffle 22 into the interior of the container body 14, i.e., into the storage space S, and has a cylindrical tube body 32a that constitutes a pipe stand, and a third flange 32b formed on the outer periphery of the tip of the tube body 32a.

[0046] The baffle 22 is a so-called baffle plate for causing a change in the flow of the object W stirred by the stirring blade 18, and has a main body portion 22a formed in an elongated shape and a fourth flange 22b formed on the outer periphery of the base end (upper end) of the main body portion 22a.

[0047] The portion of the main body 22a located on the tip side (lower) than the fourth flange 22b is a portion disposed in the accommodation space S. The base end of the main body 22a is an upper member located above the tube body 32a of the baffle nozzle 32. The fourth flange 22b is formed around the base end of the main body 22a so as to be able to face the third flange 32b of the baffle nozzle 32. The third flange 32b and the fourth flange 22b are butted against each other via a sealant (not shown) and fastened to each other using a fastener 40.

[0048] The manhole nozzle 34 shown in FIG. 1 is a nozzle used as an entrance for an operator to enter and exit when inspecting the inside of the container body 14, i.e., the storage space S, as an insertion port when storing an object W in the storage space S, and as an opening for providing a sight glass 42b described later. As shown in FIG. 2, the manhole nozzle 34 has a cylindrical pipe body 34a constituting a pipe stand and a fifth flange 34b formed on the outer periphery of the tip of the pipe body 34a. A manhole cover body 42 as an upper member located above the pipe body 34a is detachably attached to the manhole nozzle 34 via a lower seal material 44, a cleaning device 12, and an upper seal material 46.

[0049] The manhole cover 42 is a component that blocks the opening of the manhole nozzle 34 and allows the storage space S to be viewed from the outside, and has a circular, dish-shaped main body 42a that is curved so as to bulge upward, a viewing window 42b, and a sixth flange 42c formed on the outer periphery of the main body 42a.

[0050] The sight glass 42b is a window through which an operator can look into the storage space S, and has a cylindrical tube 48 formed protruding outward from the center of the main body 42a, a seventh flange 50 formed on the outer periphery of the tip of the tube 48, a glass plate 52 for covering the opening of the tube 48, and a plurality of fixing portions 54 for fixing the glass plate 52 to the tube 48.

[0051] Each of the multiple fixing parts 54 has a bolt 54a, a first hook 54b fixed to one end of the bolt 54a, a second hook 54c attached to the bolt 54a so as to be movable in the axial direction, and a nut 54d screwed onto the bolt 54a. When the nut 54d is screwed onto the bolt 54a, the second hook 54c is pushed by the nut 54d and moved toward the first hook 54b, shortening the distance between the first hook 54b and the second hook 54c. The second hook 54c of each fixing part 54 may be formed continuously as one annular member.

[0052] The glass plate 52 is disposed at the tip of the tube 48 via a sealant 56. The first hook 54b of each fixing portion 54 is hooked from below onto the seventh flange 50 formed on the tube 48, and the second hook 54c of each fixing portion 54 is hooked from above onto the outer periphery of the glass plate 52. In other words, the seventh flange 50, the sealant 56 and the glass plate 52 are sandwiched between the first hook 54b and the second hook 54c of each fixing portion 54, whereby the glass plate 52 is fixed to the tube 48.

[0053] 2 is a member for sealing the gap between the fifth flange 34b and the cleaning device 12, and the upper seal material 46 shown in FIG. 2 is a member for sealing the gap between the cleaning device 12 and the sixth flange 42c. The sixth flange 42c of the manhole cover 42 is formed so as to be able to face the fifth flange 34b of the manhole nozzle 34. The fifth flange 34b and the sixth flange 42c are butted against each other via the lower seal material 44, the cleaning device 12, and the upper seal material 46, and are fastened to each other using fasteners 55.

[0054] In addition, if the fifth flange 34b and the cleaning device 12 can be brought into liquid-tight contact, the lower sealant 44 may be omitted, and if the cleaning device 12 and the sixth flange 42c can be brought into liquid-tight contact, the upper sealant 46 may be omitted.

[0055] (Configuration of cleaning device) Fig. 3 is a diagram showing the configuration of the cleaning device 12 according to the first embodiment, where Fig. 3(A) is a perspective view, Fig. 3(B) is a plan view, and Fig. 3(C) is a cross-sectional view taken along line IIIC-IIIC in Fig. 3(B). Fig. 4 is a diagram showing the configuration of the cleaning device 12, where Fig. 4(A) is an enlarged view of a portion IVA-IVA in Fig. 3(C), and Fig. 4(B) is an enlarged view of a portion IVB-IVB in Fig. 3(C). Fig. 5 is a diagram showing a first ejection mode of the cleaning device 12, where Fig. 5(A) is a front view, Fig. 5(B) is a cross-sectional view taken along line VB-VB in Fig. 5(A), and Fig. 5(C) is a plan view.

[0056] The cleaning device 12 shown in Figure 2 is a device that is interposed between the fifth flange 34b of the manhole nozzle 34 and the sixth flange 42c of the manhole cover body 42 in order to clean the inner surface of the manhole cover body (member) 42 with cleaning liquid K.

[0057] When the object W is treated in the storage space S shown in FIG. 1, the operation of the cleaning device 12 is stopped. When replacing the object W stored in the storage space S with another object W, the object W is first discharged to the outside from the discharge nozzle 26. Then, the cleaning device 12 is driven, and the object W remaining on the member in the storage space S is washed away with the cleaning liquid K. The type of cleaning liquid K is not particularly limited, and water may be used, or a solution in which a solute is dissolved in a solvent may be used. A dispersion liquid containing suspended solids may also be used. Furthermore, water, a solution, and a dispersion liquid in which air bubbles are mixed may also be used.

[0058] 3(A) and (B), the cleaning device 12 includes an annular main body 58 and a plurality of (eight in this embodiment) spray units 60 configured to spray cleaning liquid K toward the manhole cover 42 (FIG. 2). Also, as shown in FIG. 3(C), the cleaning device 12 includes a cleaning liquid supply port 62 configured to supply cleaning liquid K to each spray unit 60, and a cleaning liquid supply pipe 64 connected to the cleaning liquid supply port 62.

[0059] As shown in FIG. 3(B), the main body 58 is an annular member attached to the tube body 34a (FIG. 2) of the manhole nozzle 34, and is configured to be sandwiched between the fifth flange 34b (FIG. 2) of the manhole nozzle 34 and the sixth flange 42c (FIG. 2) of the manhole cover body 42.

[0060] 3(A), (B), and (C), when the center line X of the main body 58 is assumed, the lower surface 58a and the upper surface 58b of the main body 58 are formed so as to be perpendicular to the center line X. As shown in Figs. 4(A) and (B), when a virtual plane perpendicular to the center line X of the main body 58 is set as a first reference plane Q1, the outer peripheral surface 58c and the inner peripheral surface 58d are formed so as to be perpendicular to the first reference plane Q1. In other words, the main body 58 is formed so that the outline of the cross section is rectangular.

[0061] 2, the inner diameter of the main body 58 is set to be approximately the same as the inner diameter of the tube 34a of the manhole nozzle 34, and the outer diameter of the main body 58 is set to be approximately the same as the outer diameter of the fifth flange 34b of the manhole nozzle 34. The material of the main body 58 is not particularly limited, and metals such as Hastelloy and stainless steel may be used, or synthetic resins and ceramics may be used. It is desirable that the material of the main body 58 has corrosion resistance equal to or greater than that of the glass lining layer.

[0062] As shown in FIGS. 4A and 4B, an annular cleaning liquid flow path 66 for flowing the cleaning liquid K is formed inside the main body 58. A lower wall surface 66a of the cleaning liquid flow path 66 is formed inclined with respect to the first reference plane Q1 so as to descend toward the inside in the radial direction of the main body 58, and an upper wall surface 66b of the cleaning liquid flow path 66 is formed parallel to the first reference plane Q1. An outer peripheral wall surface 66c and an inner peripheral wall surface 66d of the cleaning liquid flow path 66 are formed perpendicular to the first reference plane Q1. In other words, the cleaning liquid flow path 66 is formed so that the outline of the cross section is trapezoidal. In other words, the cleaning liquid flow path 66 is formed so that the vertical length of the cross section increases from the outside to the inside in the radial direction.

[0063] In this embodiment, in order to easily form the cleaning liquid flow path 66 inside the main body 58, the main body 58 is divided into an outer ring 68 and an inner ring 70. That is, the outer ring 68 forms the lower surface 58a, the upper surface 58b, and the outer peripheral surface 58c of the main body 58, and the lower wall surface 66a, the upper wall surface 66b, and the outer peripheral wall surface 66c of the cleaning liquid flow path 66. The inner ring 70 forms the inner peripheral surface 58d of the main body 58 and the inner peripheral wall surface 66d of the cleaning liquid flow path 66.

[0064] The outer ring 68 and the inner ring 70 are joined together to complete the main body 58. The joining means for joining the outer ring 68 and the inner ring 70 is not particularly limited, and welding, adhesive bonding, mating, and the like may be used, but in this embodiment, welding is used.

[0065] 4(A), as described above, the lower wall surface 66a of the cleaning liquid flow path 66 is formed at an incline with respect to the first reference plane Q1 so as to descend toward the inside in the radial direction of the main body part 58. Therefore, when the cleaning liquid K in the cleaning liquid flow path 66 decreases, the cleaning liquid K gathers in the radially inner part of the cleaning liquid flow path 66. Therefore, in order to discharge the cleaning liquid K gathered in the inner part from the cleaning liquid flow path 66, a discharge hole 72 is formed in a lower part of the inner ring 70 corresponding to the inner part, i.e., in a lower part of the inner periphery of the main body part 58.

[0066] 3(A), (B), and (C), the multiple ejection units 60 are provided spaced apart from one another in the circumferential direction of the main body unit 58. In this embodiment, eight ejection units 60 are provided at angular intervals of 45 degrees in the circumferential direction of the main body unit 58.

[0067] 4(A) and (B), each jetting portion 60 has a pressure chamber 74 formed inside the main body portion 58, and a pair of jet holes 76a, 76b formed in the inner periphery of the main body portion 58, i.e., the inner ring 70. The pressure chambers 74 of each jetting portion 60 are connected in an annular manner to form the above-mentioned cleaning liquid flow path 66. In other words, the jetting portions 60 are provided at angular intervals in the circumferential direction of the main body portion 58, so that the pressure chambers 74 of each jetting portion 60 form an annular cleaning liquid flow path 66.

[0068] Each of the pair of injection holes 76a, 76b is a through hole that communicates an inner space U1 provided radially inside the main body 58 with the pressure chamber 74 (cleaning liquid flow path 66). Each of the pair of injection holes 76a, 76b is a simple circular hole having the same inner diameter. As shown in FIG. 2, the inner space U1 of the main body 58, together with the inner space U2 of the manhole nozzle 34 and the inner space U3 of the pipe 48, is a part of the accommodation space S.

[0069] In this embodiment, the first injection mode shown in Fig. 5(A), (B), and (C) is adopted as the mode in which each injection part 60 injects the cleaning liquid K. That is, as shown in Fig. 5(B), the pair of injection holes 76a, 76b of each injection part 60 are formed so that their center lines L1, L2 intersect at one intersection P so that the cleaning liquid K injected in a columnar shape from these collides with each other and spreads in a fan shape. When a virtual plane including the respective center lines L1, L2 of the pair of injection holes 76a, 76b is defined as a third reference plane Q3, the surface of the cleaning liquid K spreading in a fan shape is perpendicular to the third reference plane Q3. In Fig. 5(B), the third reference plane Q3 is indicated by dashed hatching.

[0070] Fig. 5(A) shows the fan-shaped cleaning liquid K as viewed from the radially inner side of the main body 58, and Fig. 5(B) shows the fan-shaped cleaning liquid K as viewed from a direction perpendicular to the third reference plane Q3. Fig. 5(C) shows the fan-shaped cleaning liquid K as viewed from the direction in which the center line X of the main body 58 extends.

[0071] As shown in FIG. 5B, the pair of injection holes 76a, 76b of each injection part 60 are formed to inject the cleaning liquid K toward the inner surface of the manhole cover 42 shown in FIG. 2. That is, as shown in FIG. 5B, when a bisector that bisects the angle formed by the center lines L1, L2 of the pair of injection holes 76a, 76b is defined as a reference line E, and a virtual plane perpendicular to the center line X of the main body 58 is defined as a first reference plane Q1, each injection part 60 is configured so that the reference line E intersects with the first reference plane Q1. Also, when a point where the center lines L1, L2 intersect with each other is defined as an intersection P, each injection part 60 is configured so that the reference line E is inclined upward from the intersection P toward the injection direction of the cleaning liquid K. Note that the third reference plane Q3 includes the center lines L1, L2 of the pair of injection holes 76a, 76b, and therefore the reference line E is included in the third reference plane Q3.

[0072] As shown in FIG. 5(C), each spray unit 60 is configured to spray the cleaning liquid K from a pair of spray holes 76a, 76b, spreading in a fan shape, in a line against the inner surface of the manhole cover body 42, and to flow the cleaning liquid K in a planar manner over the inner surface of the manhole cover body 42.

[0073] That is, as shown in Fig. 5(A), the pair of injection holes 76a, 76b are arranged apart from each other in the direction in which the center line X of the main body 58 extends. In other words, when a virtual plane including the respective center lines L1, L2 of the pair of injection holes 76a, 76b is defined as a third reference plane Q3, each injection part 60 is configured such that the third reference plane Q3 is inclined with respect to the first reference plane Q1 when viewed from the direction in which the reference line E extends. Here, "the third reference plane Q3 is inclined with respect to the first reference plane Q1 when viewed from the direction in which the reference line E extends" means that the angle α formed by the third reference plane Q3 and the first reference plane Q1 when viewed from the direction in which the reference line E extends is not 0 degrees, and in this embodiment, the angle α is set to 90 degrees.

[0074] 4(A), the cleaning liquid supply port 62 is formed inside the main body 58 so as to communicate with a part of the cleaning liquid flow path 66 from the outside in the radial direction. The cleaning liquid flow path 66 is a collection of the pressure chambers 74 of all the ejection units 60. Therefore, the cleaning liquid supply port 62 in this embodiment is connected to all the pressure chambers 74.

[0075] 3(A), the cleaning liquid supply pipe 64 is a member for connecting the external piping 80 (FIG. 2) and the main body 58, and a downstream end 64a of the cleaning liquid supply pipe 64 is joined to the cleaning liquid supply port 62. The joining means for joining the downstream end 64a to the cleaning liquid supply port 62 is not particularly limited, and welding, adhesion, fitting, screwing (screw joining), etc. may be used, but in this embodiment, welding is used.

[0076] As shown in FIG. 3(C), the cleaning liquid supply pipe 64 is formed in an L-shape such that the center line M1 of the downstream end 64a and the center line M2 of the upstream end 64b intersect, and a flange 78 is formed on the outer periphery of the upstream end 64b.

[0077] 2, in the container 10, a downstream end 80a of a pipe 80 is connected to an upstream end 64b of the cleaning liquid supply pipe 64. That is, a flange 82 is formed on the outer periphery of the downstream end 80a of the pipe 80, and this flange 82 and the flange 78 of the cleaning liquid supply pipe 64 are fastened to each other using a fastener (not shown). A pump 84 for pumping the cleaning liquid K is connected to the upstream end 80b of the pipe 80.

[0078] (Cleaning method) When using the cleaning device 12 shown in Figures 3(A), (B), and (C) to clean the manhole cover 42 of the container 10 shown in Figure 1, first, an operator opens the on-off valve 28 shown in Figure 1 to discharge the object W contained in the storage space S to the outside from the discharge nozzle 26. Next, the operator drives the pump 84 shown in Figure 2 to supply the cleaning liquid K to the pressure chamber 74 of each spray unit 60 of the cleaning device 12, and sprays the cleaning liquid K in a fan shape from the pair of spray holes 76a, 76b of each spray unit 60 toward the manhole cover 42, as shown in Figure 5(C).

[0079] This allows the cleaning liquid K to be applied in a line to the inner surface of the manhole cover 42, and then the cleaning liquid K can be made to flow in a planar manner on the inner surface of the manhole cover 42, washing away the object W remaining on the inner surface. As described below, the spraying mode of the cleaning liquid K can be changed as appropriate, and a spraying mode in which the cleaning liquid K flows in a line on the inner surface of the manhole cover 42 may be adopted, or a spraying mode in which a swirling flow of the cleaning liquid K is generated on the inner surface of the manhole cover 42 may be adopted. In addition, the agitator 18 may be driven when the object W is discharged or when cleaning is performed by the cleaning device 12.

[0080] As described above, in the cleaning device 12, the multiple pressure chambers 74 are connected in an annular manner, and the cleaning liquid K is supplied to all the pressure chambers 74 from one cleaning liquid supply port 62. Therefore, the operator can intermittently operate the pump 84 (FIG. 2) or intermittently open and close the discharge valve (not shown) of the pump 84 to make the cleaning liquid K supplied from the cleaning liquid supply port 62 to each spray unit 60 a pulsating flow, thereby generating a phase difference in the spraying operation of each spray unit 60, and efficiently cleaning the inner surface of the manhole cover 42. The operation of the opening and closing valve 28 and the operation of the discharge valve of the pump 84 may be performed automatically by adopting an electric valve or the like. The operation of the opening and closing valve 28, the operation of driving / stopping the pump 84, and the operation of the discharge valve of the pump 84 may be performed automatically in sequence according to a preset sequence.

[0081] (Effects of the first embodiment) According to the container 10 and the cleaning device 12 of this embodiment, the above-mentioned configuration can provide the following effects. That is, the degree of freedom in designing the spraying manner of the cleaning liquid K for each of the multiple spraying parts 60 can be increased, and the inner surface of the manhole cover body (member) 42, which is the object to be cleaned, can be efficiently cleaned. That is, the cleaning liquid K sprayed in a columnar shape from the pair of spray holes 76a, 76b collides with each other and spreads in a fan shape, so that the spraying manner of the cleaning liquid K can be appropriately determined according to the position and shape of the manhole cover body (member) 42 by appropriately selecting the respective positions, sizes, and directions of the pair of spray holes 76a, 76b.

[0082] Since the pressure chambers 74 of the multiple ejecting parts 60 are connected to each other in an annular shape, it is not necessary to provide a cleaning liquid supply port 62 for each ejecting part 60, which simplifies the structure and reduces manufacturing costs.

[0083] Since each of the pair of injection holes 76a, 76b of each injection part 60 can be formed as a through hole of a simple shape, coupled with the fact that the injection holes 76a, 76b can be processed in the inner ring 70 separated from the outer ring 68, processing of each injection part 60 is easy. In addition, since adhesion of foreign matter to the injection holes 76a, 76b of a simple shape can be suppressed, contamination of foreign matter can be suppressed. In other words, since it is possible to suppress the previously processed object W from adhering to and remaining in the injection holes 76a, 76b, it is possible to suppress the object W from being mixed with other objects W to be processed later.

[0084] Since each of the pair of injection holes 76a, 76b can be formed as a through hole of a simple shape, they can be formed with a small hole diameter (for example, 1 mm or less) by electric discharge machining, etc. Therefore, when the injection of the cleaning liquid K is stopped, the cleaning liquid K adhering to the inner circumferential surface 58d of the main body 58 of the cleaning device 12 and the cleaning liquid K present in the inner space U1 can be prevented from flowing back into the injection holes 76a, 76b.

[0085] As shown in FIG. 5(B), each spraying section 60 is configured so that the reference line E intersects with the first reference plane Q1 and so that the reference line E slopes upward from the intersection P toward the spraying direction of the cleaning liquid K. As a result, the cleaning liquid K can be sprayed toward the manhole cover 42 located above the cleaning device 12, and the inner surface of the manhole cover 42 can be efficiently cleaned.

[0086] As shown in FIG. 5(A), each spraying section 60 is configured such that the third reference plane Q3 is inclined (including 90 degrees) relative to the first reference plane Q1 when viewed from the direction in which the reference line E extends. This allows the fan-shaped cleaning liquid K to be applied in a line to the inner surface of the manhole cover body 42, and the cleaning liquid K to flow in a planar manner over the inner surface of the manhole cover body 42, thereby efficiently cleaning the inner surface of the manhole cover body 42.

[0087] The lower wall surface 66a of the cleaning liquid flow path 66 of the cleaning device 12 is formed at an incline with respect to the first reference plane Q1 so as to descend radially inwardly of the main body portion 58, and a discharge hole 72 is formed in the lower part of the inner periphery of the main body portion 58. Therefore, when the spray of the cleaning liquid K is stopped, the cleaning liquid K in the cleaning liquid flow path 66 can be efficiently discharged from the discharge hole 72.

[0088] (Modification) It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible without departing from the scope of the present invention. That is, in the above embodiment, the cleaning device 12 has eight ejection units 60, but the number of ejection units 60 may be at least one, and may be 1 to 7, or may be 9 or more.

[0089] In the above embodiment, the pressure chambers 74 of the ejecting units 60 are connected in an annular manner, and one cleaning liquid supply port 62 is connected to all the pressure chambers 74, but at least one pressure chamber 74 may be provided independently from the other pressure chambers 74. Also, different cleaning liquid supply ports 62 may be connected to the independent pressure chamber 74 and the other pressure chambers 74, respectively.

[0090] In the above embodiment, the main body 58 of the cleaning device 12 is formed in a circular shape ( FIG. 3(B) ) in a plan view, but the main body 58 may be formed in an oval, elliptical or polygonal shape in a plan view. In the above embodiment, the cleaning device 12 has the cleaning liquid supply pipe 64, but when the cleaning liquid supply pipe 64 is detachably joined (for example, screw-jointed) to the cleaning liquid supply port 62, the cleaning liquid supply pipe 64 may be configured as a member independent of the cleaning device 12.

[0091] In the above embodiment, each spraying section 60 is configured so that the reference line E slopes upward from the intersection P toward the spraying direction of the cleaning liquid K (Figure 5 (B)). However, when the member to be cleaned is located below the cleaning device 12, each spraying section 60 may be configured so that the reference line E slopes downward from the intersection P toward the spraying direction of the cleaning liquid K.

[0092] Furthermore, when the member to be cleaned is located both above and below the cleaning device 12, some of the jetting sections 60 may be configured so that the reference line E slopes upward from the intersection P toward the spraying direction of the cleaning liquid K, while other of the jetting sections 60 may be configured so that the reference line E slopes downward from the intersection P toward the spraying direction of the cleaning liquid K. In other words, the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one jetting section 60 may be determined to be different from the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one other jetting section 60.

[0093] The manhole nozzle 34 (FIG. 1) in the above embodiment is used as an insertion port for the object W, and is also used as an entrance / exit for the worker to enter and exit, but if an insertion nozzle (not shown) for inserting the object W or an insertion port other than a nozzle is separately provided, the manhole nozzle 34 does not need to have the function of an insertion port. Also, if an entrance / exit nozzle (not shown) or an entrance / exit other than a nozzle for the worker to enter and exit is separately provided, the manhole nozzle 34 does not need to have the function of an entrance / exit. A nozzle that does not have the function of an entrance / exit is not a "manhole nozzle," so the nozzle indicated by the reference symbol 34 in FIG. 1 is a "sight window nozzle" or an "insertion port nozzle."

[0094] In the above embodiment, the first injection mode shown in Fig. 5(A), (B), and (C) is adopted, but the first injection mode has the following problems (a), (b), and (c). That is, (a) the washing liquid K spread in a fan shape may interfere with each other, and the injection force of the washing liquid K may be weakened. (b) Since the washing liquid K flowing on the inner surface of the manhole cover body 42 falls from the inner peripheral edge of the base end of the pipe body 48, the residence time of the washing liquid K on the inner surface of the manhole cover body 42 is shortened, and it is difficult to efficiently wash the inner surface. (c) Since the washing liquid K is injected from a pair of injection holes 76a and 76b having the same inner diameter, it is difficult to arbitrarily determine the injection direction of the washing liquid K spread in a fan shape.

[0095] In order to alleviate these problems (a), (b), and (c), the following injection modes may be adopted instead of the first injection mode. In addition, two or more of the following injection modes may be appropriately combined and adopted.

[0096] (Second injection mode) 6A to 6C are diagrams showing a second ejection mode of the cleaning device 12 according to the first embodiment, where (A) is a front view, (B) is a cross-sectional view taken along line VIB-VIB in (A), and (C) is a plan view. In the first ejection mode, the cleaning liquid K that spreads in a fan shape may interfere with each other, weakening the ejection force of the cleaning liquid K. To solve this problem, the second ejection mode shown in Figs. 6A, 6B, and 6C may be adopted.

[0097] 6(A), in the cleaning device 12 employing the second jetting mode, a pair of jet holes 76a, 76b are arranged apart from each other in a direction parallel to the first reference plane Q1. In other words, each jetting section 60 is configured such that the third reference plane Q3 is parallel to the first reference plane Q1 when viewed from the direction in which the reference line E extends.

[0098] As shown in Fig. 6(C), in the second spraying mode, the cleaning liquid K sprayed from the pair of spray holes 76a, 76b and spread in a fan shape hits the inner surface of the manhole cover 42 in a line, and then flows linearly along the inner surface. That is, in the first spraying mode, the cleaning liquid K spreads in the horizontal direction in the air (a direction substantially parallel to the inner surface of the manhole cover 42), whereas in the second spraying mode, the cleaning liquid K spreads in the vertical direction in the air (a direction substantially perpendicular to the inner surface of the manhole cover 42). Therefore, in the second spraying mode, it is possible to suppress interference between the sprays of the cleaning liquid K that have spread in a fan shape, and it is possible to prevent the spray force of the cleaning liquid K from being weakened.

[0099] (Third injection mode) 7A and 7B are diagrams showing a third spraying mode of the cleaning device 12 according to the first embodiment, where (A) is a front view and (B) is a plan view. In the first spraying mode, the fan-shaped cleaning liquid K may interfere with each other, weakening the spraying force of the cleaning liquid K. On the other hand, in the second spraying mode, the fan-shaped cleaning liquid K flows linearly on the inner surface of the manhole cover 42, so that the cleaning efficiency may be lower than when the cleaning liquid K flows planarly. In order to alleviate these problems, the third spraying mode shown in Figs. 7A and 7B may be adopted.

[0100] 7(A), in a cleaning device 12 employing the third injection mode, a pair of injection holes 76a, 76b of each injection part 60 are disposed apart from each other in both directions parallel and perpendicular to the first reference plane Q1. In other words, each injection part 60 is configured such that the third reference plane Q3 is inclined at an angle of less than 90 degrees with respect to the first reference plane Q1 when viewed from the direction in which the reference line E extends. The positions, sizes, orientations, etc. of the pair of injection holes 76a, 76b are determined to be the same for all injection parts 60.

[0101] 7(B), in the third spraying mode, the cleaning liquid K sprayed from the pair of spray holes 76a, 76b and spreading in a fan shape hits the inner surface of the manhole cover 42 in a line and then flows on the inner surface in a planar manner. Therefore, the cleaning efficiency can be improved compared to the case where the cleaning liquid K flows in a line.

[0102] Furthermore, the cleaning liquid K that spreads out in a fan shape when viewed from the direction in which the reference line E extends is inclined with respect to the first reference plane Q1, but the inclination direction and inclination angle of the cleaning liquid K are the same for all of the spraying parts 60. Therefore, it is possible to suppress interference between adjacent cleaning liquids K, and prevent the spraying power of the cleaning liquid K from being weakened. Note that, although the tip regions of adjacent cleaning liquids K partially overlap when viewed from the direction in which the center line X of the main body part 58 extends, the overlapping parts are separated in the vertical direction and therefore do not interfere with each other.

[0103] (Fourth injection mode) 8A and 8B are diagrams showing a fourth spraying mode of the cleaning device 12 according to the first embodiment, where (A) is a front view and (B) is a plan view. In the first spraying mode, the cleaning liquid K flowing on the inner surface of the manhole cover 42 falls from the inner peripheral edge of the base end of the pipe 48, so that the residence time of the cleaning liquid K on the inner surface of the manhole cover 42 is short, making it difficult to efficiently clean the inner surface. To solve this problem, a fourth spraying mode shown in Figs. 8A and 8B may be adopted.

[0104] 8(B), assuming that a virtual plane including the center line X of the main body 58 and the intersection P is a second reference plane Q2, in the cleaning device 12 employing the fourth jetting mode, the angle β between the reference line E and the second reference plane Q2 when viewed from the direction in which the center line X of the main body 58 extends is set within a range of 10 degrees to 60 degrees. The angle β is set to be the same for all jetting units 60. All jetting units 60 are configured such that the reference line E is inclined upward from the intersection P toward the jetting direction of the cleaning liquid K.

[0105] 8(B), in the fourth jetting mode, the jetting direction of the cleaning liquid K that is jetted from each jetting part 60 and spreads in a fan shape when viewed from the direction in which the center line X of the main body part 58 extends is inclined with respect to the direction along the second reference plane Q2, that is, the direction from the intersection P toward the center line X of the main body part 58. Therefore, a swirling flow of the cleaning liquid K jetted from each jetting part 60 can be generated around the center line X of the main body part 58. This can lengthen the time that the cleaning liquid K remains on the inner surface of the manhole cover body 42, and the inner surface of the manhole cover body 42 can be efficiently cleaned.

[0106] In Fig. 8(B), the direction of the swirling flow is indicated by a white arrow. The direction of the swirling flow is not limited to the "counterclockwise" direction shown in Fig. 8(B), and may be determined as the "clockwise" direction. If the angle β in either the "counterclockwise" or "clockwise" direction is set to be "within the range of +10 degrees to +60 degrees," the angle β in the other direction is set to be "within the range of -10 degrees to -60 degrees."

[0107] In the cleaning device 12 in which the fourth jetting mode is adopted, the jetting unit 60 is configured so that the reference line E is inclined upward from the intersection point P toward the jetting direction of the cleaning liquid K, so that the tip region of the cleaning liquid K spreading in a fan shape is located above the base end region of the cleaning liquid K. When focusing on two adjacent jetting units 60, the tip region of the cleaning liquid K jetted from one jetting unit 60 and the base end region of the cleaning liquid K jetted from the other jetting unit 60 are separated in the up-down direction. Therefore, in the fourth jetting mode, it is possible to suppress interference between adjacent jets of cleaning liquid K, and to prevent the jetting force of the cleaning liquid K from being weakened.

[0108] The angle β of at least one spraying portion 60 may be different from the angle β of at least one other spraying portion 60. However, in order to prevent adjacent sprays of cleaning liquid K from interfering with each other, it is desirable that the angle β of all spraying portions 60 be set to the same.

[0109] (Fifth injection mode) FIG. 9 is a diagram showing a fifth spraying mode of the cleaning device 12 according to the first embodiment, where (A) is a front view and (B) is a plan view. FIG. 10 is a cross-sectional view showing a usage state corresponding to the fifth spraying mode of the cleaning device 12 according to the first embodiment. As shown in FIG. 2, in the manhole cover 42, the lower surface of the main body 42a and the lower surface of the glass plate 52 are separated by a length equal to the total length of the tube 48 and the thickness of the sealant 56. Therefore, in the above spraying modes in which the cleaning liquid K is applied to the lower surface of the manhole cover 42, i.e., the lower surface of the main body 42a, it is difficult to clean the lower surface of the glass plate 52 and the inner surface of the tube 48. In order to solve this problem, the fifth spraying mode shown in FIG. 9(A) and (B) may be adopted.

[0110] 9(A), the cleaning device 12 employing the fifth jetting mode includes, in addition to the multiple jetting units 60, at least one auxiliary jetting unit 86 configured to jet the cleaning liquid K in a columnar shape toward the glass plate (member) 52 and the tube (member) 48. The auxiliary jetting unit 86 includes an auxiliary pressure chamber (not shown) formed inside the main body 58 and communicating with the pressure chamber 74, and an auxiliary jet hole 88 formed in the inner periphery of the main body 58 and communicating the inner space U1 with the auxiliary pressure chamber (not shown). The auxiliary jet hole 88 is provided between two jetting units 60 arranged side by side in the circumferential direction of the main body 58.

[0111] 10, the spraying direction of the cleaning liquid K spread in a fan shape at each spraying part 60 is indicated by a white arrow, and the spraying direction of the cleaning liquid K at each auxiliary spraying part 86 is indicated by a black arrow. Also, the direction of the cleaning liquid K scattered by collision is indicated by a dashed arrow.

[0112] As shown in Fig. 10, the spray direction of the cleaning liquid K sprayed from the spray unit 60 and spreading in a fan shape is directed upward at a first inclination angle with respect to the first reference plane Q1. On the other hand, the spray direction of the cleaning liquid K sprayed from the auxiliary spray unit 86 is directed upward at a second inclination angle smaller than the first inclination angle with respect to the first reference plane Q1. Therefore, the cleaning liquid K sprayed from the spray unit 60 and spreading in a fan shape can be applied to the underside of the manhole cover 42 to clean it. Also, the cleaning liquid K sprayed in a columnar shape from the auxiliary spray unit 86 can be applied to the underside of the glass plate 52 exposed in the inner space U3 of the tube 48 and the inner surface of the tube 48 to clean them.

[0113] When the cleaning device 12 has a plurality of auxiliary jetting units 86, the cleaning liquid K jetted from each auxiliary jetting unit 86 can be caused to collide with each other in the inner space U3 of the tubular body 48. Therefore, the cleaning liquid K scattered by the collision can be directed to the underside of the glass plate 52 and the inner surface of the tubular body 48 to efficiently clean these. Even when the cleaning device 12 has only one auxiliary jetting unit 86, the cleaning liquid K jetted from the auxiliary jetting unit 86 can be directed to the inner surface of the tubular body 48 to clean it.

[0114] In the fifth jetting mode, the auxiliary jetting part 86 can clean a member that is difficult to clean only with the jetting part 60. In addition, since one auxiliary jet hole 88 of the auxiliary jetting part 86 is provided between two jetting parts 60 arranged in the circumferential direction of the main body part 58, the cleaning liquid K jetted from the auxiliary jetting part 86 and the cleaning liquid K jetted from the jetting part 60 are unlikely to interfere with each other, and it is possible to prevent the momentum of these cleaning liquids K from weakening.

[0115] The second inclination angle may be an angle different from the first inclination angle so that the cleaning liquid K sprayed from the auxiliary jetting part 86 does not interfere with the cleaning liquid K sprayed from the jetting part 60 and spreading in a fan shape, and the second inclination angle is not limited to an angle smaller than the first inclination angle. For example, when the cleaning liquid K sprayed from the auxiliary jetting part 86 is used to clean the outer periphery of the inner surface of the manhole cover body 42 (i.e., the inner surface of the main body part 42a), the second inclination angle may be set to be larger than the first inclination angle. Furthermore, the second inclination angle of at least one auxiliary jetting part 86 and the second inclination angle of at least one other auxiliary jetting part 86 may be set to be different in magnitude.

[0116] (Sixth injection mode) 11A to 11C are diagrams showing a sixth spraying mode of the cleaning device 12 according to the first embodiment, where (A) is a front view, (B) is a cross-sectional view taken along line XIB-XIB in (A), and (C) is a plan view. In the first spraying mode, the cleaning liquid K is sprayed from a pair of spray holes 76a and 76b having the same inner diameter, so it is difficult to determine the spray direction of the fan-shaped cleaning liquid K in any direction. To solve this problem, a sixth spraying mode shown in Figs. 11A, 11B, and 11C may be adopted.

[0117] 11(A), in the cleaning device 12 employing the sixth injection mode, when one of a pair of injection holes 76a, 76b is the first injection hole 76a and the other is the second injection hole 76b, the inner diameter of the first injection hole 76a is set to be larger than the inner diameter of the second injection hole 76b. Therefore, the flow of the cleaning liquid K injected from the first injection hole 76a is stronger than the flow of the cleaning liquid K injected from the second injection hole 76b.

[0118] In the sixth injection mode, the inner diameters of the first injection hole 76a and the second injection hole 76b are adjusted to inject the cleaning liquid K in any direction. For example, even when the reference line E is parallel to the first reference plane Q1, the cleaning liquid K can be injected at an angle toward one of the two opening ends of the main body 58.

[0119] In the cleaning device 12 shown in Fig. 11(B), the reference line E extends parallel to the first reference plane Q1, but the inner diameter of the first injection hole 76a located on the lower side (the side farther from the manhole cover 42) is set to be larger than the inner diameter of the second injection hole 76b located on the upper side (the side closer to the manhole cover 42), so that the injection direction of the cleaning liquid K spreading in a fan shape can be directed upward. Therefore, as shown in Fig. 11(C), regardless of the inclination angle of the reference line E with respect to the first reference plane Q1, the cleaning liquid K can be applied to the inner surface of the manhole cover 42.

[0120] (Configuration of container and cleaning device according to the second embodiment) 12 is a partially enlarged cross-sectional view showing the configuration of a container 90 and a cleaning device 92 according to the second embodiment. In the first embodiment, the cleaning device 12 is interposed between the fifth flange 34b of the manhole nozzle 34 and the sixth flange 42c of the manhole cover 42, but as in the container 90 according to the second embodiment, the cleaning device 92 may be interposed between the first flange 30b of the agitating blade nozzle 30 and the second flange 36c of the agitating blade cover 36. In other words, the main body 58 of the cleaning device 92 may be attached to the tube 30a of the agitating blade nozzle 30.

[0121] In the container 90, the basic configuration of the cleaning device 92 is the same as that of the cleaning device 12 according to the first embodiment. The spray direction of the cleaning liquid K in some of the spraying parts 60 is directed toward the inner surface of the agitation blade cover 36, and the spray direction of the cleaning liquid K in other of the spraying parts 60 is directed toward the surface of the rotation shaft 18a. In other words, the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one of the spraying parts 60 is set to be different from the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one other of the spraying parts 60. In FIG. 12, the spray direction of the fan-shaped cleaning liquid K in each spraying part 60 is indicated by a white arrow.

[0122] The inclination angle α of the third reference plane Q3 relative to the first reference plane Q1 in the jetting unit 60 for cleaning the inner surface of the agitating blade cover 36 is desirably set large (including 90 degrees) in the same manner as the first jetting mode shown in FIG. 5(A) in order to make the cleaning liquid K flow in a planar manner on the inner surface of the agitating blade cover 36. Specifically, it is desirably set to be larger than 45 degrees. The inclination angle α of the third reference plane Q3 relative to the first reference plane Q1 in the jetting unit 60 for cleaning the surface of the rotating shaft 18a is desirably set small (including 0 degrees) in the same manner as the second jetting mode shown in FIG. 6(A) in order to apply the cleaning liquid K linearly along the length direction of the rotating shaft 18a. Specifically, it is desirably set to be smaller than 45 degrees. Furthermore, it is desirable that the angle β between the reference line E of each spraying portion 60 and the second reference plane Q2 be set within the range of 10 degrees to 60 degrees, similar to the fourth spraying mode shown in Figure 8 (B), in order to generate a swirling flow of the cleaning liquid K sprayed from each spraying portion 60.

[0123] 12, the black arrow indicates the direction of the swirling flow of the cleaning liquid K. The direction of the swirling flow is not limited to the "counterclockwise" direction shown in FIG. 12, but may be set to the "clockwise" direction.

[0124] (Configuration of container and cleaning device according to the third embodiment) 13 is a partially enlarged cross-sectional view showing the configurations of a container 94 and a cleaning device 96 according to the third embodiment. Like the container 94 according to the third embodiment, the cleaning device 96 may be interposed between the third flange 32b of the baffle nozzle 32 and the fourth flange 22b of the baffle 22. In other words, the main body 58 of the cleaning device 96 may be attached to the tube 32a of the baffle nozzle 32.

[0125] In the container 94, the basic configuration of the cleaning device 96 is the same as that of the cleaning device 12 according to the first embodiment. The spray direction of the cleaning liquid K from the spray unit 60 is directed toward the surface of the baffle 22. In Fig. 13, the spray direction of the cleaning liquid K spread in a fan shape from the spray unit 60 is indicated by a white arrow.

[0126] The inclination angle α of the third reference plane Q3 with respect to the first reference plane Q1 in each jetting part 60 is desirably set small (including 0 degrees) in the same manner as in the second jetting mode shown in Fig. 6(A) in order to apply the cleaning liquid K linearly along the length direction to the baffle 22. Specifically, it is desirably set smaller than 45 degrees. Moreover, the angle β formed by the reference line E of each jetting part 60 and the second reference plane Q2 is desirably set within the range of 10 degrees to 60 degrees in the same manner as in the fourth jetting mode shown in Fig. 8(B) in order to generate a swirling flow of the cleaning liquid K jetted from each jetting part 60.

[0127] 13, the black arrow indicates the direction of the swirling flow of the cleaning liquid K. The direction of the swirling flow is not limited to the "counterclockwise" direction shown in FIG. 13, but may be set to the "clockwise" direction.

[0128] (Configuration of container and cleaning device according to the fourth embodiment) FIG. 14 is a partially enlarged cross-sectional view showing the configuration of a container 98 and a cleaning device 100 according to the fourth embodiment. In a container used as a reaction tank in a chemical plant or the like, processes such as cooling, heating, evaporation, and condensation are performed. In the condensation, the steam generated in the storage space S needs to be cooled by a condenser (not shown) provided outside the container body 14. In this case, as in the container 98 shown in FIG. 14, a steam pipe 102 extending from a condenser (not shown) may be connected to a tube 104a of a condenser nozzle 104 via a cleaning device 100. In this case, the cleaning device 100 may be interposed between a flange 104b formed on the tube 104a of the condenser nozzle 104 and a flange 102a formed on the steam pipe 102. In other words, the main body 58 of the cleaning device 100 may be attached to the tube 104a of the condenser nozzle 104.

[0129] In the container 98, the basic configuration of the cleaning device 100 is the same as that of the cleaning device 12 according to the first embodiment. The spray direction of the cleaning liquid K in some of the spraying parts 60 is directed toward the inner surface of the steam pipe 102, and the spray direction of the cleaning liquid K in other of the spraying parts 60 is directed toward the inner surface of the tube body 104a. That is, the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one of the spraying parts 60 is set to be different from the inclination angle of the reference line E with respect to the first reference plane Q1 in at least one other of the spraying parts 60. In FIG. 14, the spray direction of the cleaning liquid K spread in a fan shape in each of the spraying parts 60 is indicated by a white arrow.

[0130] The inclination angle α of the third reference plane Q3 with respect to the first reference plane Q1 in each jetting part 60 is not particularly limited and may be set to any angle between 0 degrees and 90 degrees. The angle β between the reference line E of each jetting part 60 and the second reference plane Q2 is desirably set within the range of 10 degrees to 60 degrees, similar to the fourth jetting mode shown in FIG. 8(B), in order to generate a swirling flow of the cleaning liquid K jetted from each jetting part 60. [Explanation of symbols]

[0131] E...reference line, K...cleaning liquid, L1, L2...center line, M1, M2...center line, P...intersection, Q1...first reference plane, Q2...second reference plane, Q3...third reference plane, S...storage space, U1, U2, U3...inner space, W...object, X...center line, 10...container, 12...cleaning device, 14...container body, 14a...peripheral wall portion, 14b...lower wall portion, 14c...upper wall portion, 16...jacket, 16a...jacket body, 16b...heat medium flow path, 18...agitating blade, 18a...rotating shaft, 18b...blade member, 20...rotation drive portion, 20a...motor, 20b ...Drive shaft, 22...Baffle, 22a...Main body, 22b...Fourth flange, 26...Discharge nozzle, 28...Opening and closing valve, 30...Nozzle for stirring blade, 30a...Tube, 30b...First flange, 32...Nozzle for baffle, 32a...Tube, 32b...Third flange, 34...Nozzle for manhole, 34a...Tube, 34b...Fifth flange, 36...Cover for stirring blade, 36a...Main body, 36b...Support part, 36c...Second flange, 38, 40...Fastener, 42...Cover for manhole (member), 42a...Main body, 42b...Sight window, 42c...sixth flange, 44...lower sealant, 46...upper sealant, 48...tube body, 50...seventh flange, 52...glass plate, 54...fixing portion, 54a...bolt, 54b...first hook, 54c...second hook, 54d...nut, 55...fastener, 56...sealant, 58...main body, 58a...lower surface, 58b...upper surface, 58c...outer surface, 58d...inner surface, 60...jet portion, 62...cleaning liquid supply port, 64...cleaning liquid supply pipe, 64a...downstream end, 64b...upstream end, 66...cleaning liquid flow path, 66a...lower Wall surface, 66b...upper wall surface, 66c...outer wall surface, 66d...inner wall surface, 68...outer ring, 70...inner ring, 72...discharge hole, 74...pressure chamber, 76a, 76b...injection hole, 78...flange, 80...piping, 80a...downstream end, 80b...upstream end, 82...flange, 84...pump, 86...auxiliary injection part, 88...auxiliary injection hole, 90, 94, 98...container, 92, 96, 100...cleaning device, 102...steam pipe, 102a...flange, 104...condenser nozzle, 104a...tube body, 104b...flange.

Claims

1. A cleaning device for cleaning a member with a cleaning liquid, comprising: An annular body portion; At least one sprayer configured to spray a cleaning fluid toward the member; a cleaning liquid supply port configured to supply a cleaning liquid to the spray portion; the injection portion has a pressure chamber formed inside the main body portion, and a pair of injection holes formed on an inner periphery of the main body portion, the pair of injection holes communicating an inner space secured radially inward of the main body portion with the pressure chamber, the cleaning liquid supply port is connected to the pressure chamber; The pair of injection holes are formed such that their center lines intersect at one intersection so that the cleaning liquid injected from the injection holes in a columnar shape collides with each other and spreads in a fan shape.

2. A plurality of the injection portions are provided at intervals in a circumferential direction of the main body portion, The cleaning device according to claim 1 , wherein the pressure chambers of the respective plurality of ejection portions are annularly connected to one another.

3. When a bisector that bisects an angle formed by the center lines of the pair of injection holes is defined as a reference line, and a virtual plane perpendicular to the center line of the main body is defined as a first reference plane, The cleaning device of claim 2 , wherein the jet is configured such that the reference line intersects the first reference plane.

4. When one of the pair of injection holes is designated as a first injection hole and the other is designated as a second injection hole, The cleaning device according to claim 2 , wherein an inner diameter of the first injection hole is set to be larger than an inner diameter of the second injection hole.

5. When a bisector that bisects an angle formed by the center lines of the pair of injection holes is defined as a reference line, and a virtual plane perpendicular to the center line of the main body is defined as a first reference plane, 5. The cleaning device according to claim 3, wherein an inclination angle of the reference line with respect to the first reference plane in at least one of the jetting portions is determined to be different from an inclination angle of the reference line with respect to the first reference plane in at least one other of the jetting portions.

6. When a bisector that bisects an angle formed by the center lines of the pair of injection holes is defined as a reference line, and an imaginary plane that includes the center line of the main body and the intersection point is defined as a second reference plane, The cleaning device according to claim 3 , wherein an angle between the reference line and the second reference plane when viewed from a direction in which a center line of the main body extends is set within a range of 10 degrees to 60 degrees.

7. When a bisector that bisects an angle formed by the center lines of the pair of injection holes is defined as a reference line, an imaginary plane perpendicular to the center line of the main body is defined as a first reference plane, and an imaginary plane including the center lines of the pair of injection holes is defined as a third reference plane, The cleaning device according to claim 1 , wherein the ejection section is configured so that the third reference plane is inclined with respect to the first reference plane when viewed from a direction in which the reference line extends.

8. at least one auxiliary jet configured to jet cleaning fluid toward the member; the auxiliary injection portion has an auxiliary pressure chamber formed inside the main body portion and communicating with the pressure chamber, and one auxiliary injection hole formed in an inner circumferential portion of the main body portion and communicating the inner space with the auxiliary pressure chamber, The cleaning device according to claim 2 , wherein the auxiliary injection hole is provided between two of the injection portions arranged in a circumferential direction of the main body.

9. A container body having a storage space for storing an object; A tube provided in the container body; A container having a cleaning device for cleaning the member with a cleaning liquid, The cleaning device includes: an annular body portion attached to the tube; At least one sprayer configured to spray a cleaning fluid toward the member; a cleaning liquid supply port configured to supply a cleaning liquid to the spray portion; the injection portion has a pressure chamber formed inside the main body portion, and a pair of injection holes formed on an inner periphery of the main body portion, the pair of injection holes communicating an inner space secured radially inward of the main body portion with the pressure chamber, the cleaning liquid supply port is connected to the pressure chamber; The pair of injection holes are formed so that their center lines intersect at one intersection point so that the cleaning liquid injected from the injection holes in columns collides with each other and spreads in a fan shape.

10. A plurality of the injection portions are provided at intervals in a circumferential direction of the main body portion, The container according to claim 9 , wherein the pressure chambers of the respective plurality of ejection portions are annularly communicated with each other.

11. An annular body portion; A plurality of ejection units provided on the main body unit; A cleaning method using a cleaning device including a cleaning liquid supply port provided in the main body and supplying a cleaning liquid to the plurality of spray portions, A cleaning method comprising: spraying cleaning liquid in a fan shape from a plurality of spraying portions toward a component to clean the component.

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