JP6531972B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning apparatus, and more specifically, in a state in which an opening of an object to be cleaned such as a tank is covered with a lid, the inside of the object to be cleaned is cleaned with cleaning liquid from a cleaning nozzle introduced into the inside. The cleaning device.

Conventionally, as a cleaning apparatus, a cleaning nozzle provided so as to be able to enter and retract into an internal space of an object to be cleaned and jet a cleaning solution, and the opening of the object to be cleaned is closed when the cleaning nozzle is made to enter the internal space Patent Document 1 discloses that the inside of the object to be cleaned is cleaned in a state in which the opening of the object to be cleaned is closed by the lid.
The cleaning nozzle is provided at the tip of a vertically arranged tube, and is lowered when the tube is lowered to enter the object to be cleaned, and at the same time a lid fixed to the tube. Closes the opening of the object to be cleaned.
In this state, the cleaning liquid is sprayed from the cleaning nozzle, and the cleaning nozzle is pivoted in various directions inside the object to be cleaned, whereby the inside of the object to be cleaned is cleaned.

Patent No. 4636956 gazette

Since the lid is fixed to the tube, when the object to be cleaned is set so that the plane of the opening of the object to be cleaned is parallel to the plane of the lid, the opening of the object to be cleaned by the lid Although it was possible to close the part, the opening could not be closed by the lid when the opening of the object to be cleaned was supplied and set in an inclined state with respect to the plane of the lid.
In this case, there is a risk that a large amount of cleaning liquid may spill out of the object to be cleaned because the lid and the opening contact at one point and a gap is generated in all other parts. In addition, the same problem occurs in the cleaning object having a slope at the opening and being inclined with respect to the plane of the lid.
In view of such circumstances, the present invention prevents, as much as possible, that a large amount of cleaning liquid spills out of the object to be cleaned even if the opening of the object to be cleaned is inclined with respect to the plane of the lid. It is intended to provide a cleaning device that can

That is, according to the first aspect of the present invention, there is provided a cleaning nozzle provided so as to be able to enter and retract into the internal space of the object to be cleaned and spraying the cleaning liquid, and an opening of the object to be cleaned when the cleaning nozzle is advanced into the internal space. A cleaning device for cleaning the inside of the object to be cleaned in a state where the opening of the object to be cleaned is closed by the lid;
A first lid member integrally moved with the cleaning nozzle, and an annular inner circumferential portion supported by the first lid member and a lower surface in close contact with the opening of the object to be cleaned The lower surface of the second lid member is cleaned with the second lid member in a state in which a slight gap is generated between the first lid member and the second lid member when cleaning the object to be cleaned. Rukoto of is brought into contact with the opening by closing the opening, not further inhibit labyrinth means are provided from leaking cleaning liquid to the outside from the gap between the first cover member and the second cover member the Ru der those characterized.

According to the first aspect of the present invention, at the time of cleaning the object to be cleaned, the lower surface of the second lid member is cleaned with a slight gap formed between the first lid member and the second lid member. Because the opening is closed by coming into contact with the opening of the second cover member, the second cover member is not related to the plane of the first cover member by the gap even if the opening of the object to be cleaned is inclined. It is possible to follow the inclination of the opening of the object to be cleaned.
In this state, a gap is generated between the second lid member and the first lid member, but the cleaning liquid leaks to the outside from the gap between the first lid member and the second lid member by the labyrinth means. it is possible to prevent the, Ru can be reduced as much as possible the washing liquid amount leaking to the outside of the object to be cleaned.

FIG. 1 is a front view showing a first embodiment of the present invention. The expanded sectional view of the principal part of FIG. Sectional drawing which shows the state which closed the opening part 3a of the to-be-cleaned thing 3 by the lid | cover 45. FIG. (A), (b), (c) is an expanded sectional view of the principal part which shows the flow of the cleaning fluid at the time of different cleaning, respectively. The expanded sectional view of the principal part which shows 2nd Example of this invention.

Hereinafter, the present invention will be described with reference to the illustrated embodiment. In FIG. 1, the cleaning device 1 is provided so as to be able to clean the inside of the object to be cleaned 3 such as a tank placed at a predetermined position of the guide 2 An object 3 to be cleaned is carried into a predetermined position 2 by a carrying-in means (not shown). Further, the object to be cleaned 3 is carried out by the carrying out means (not shown) after the cleaning of the inside thereof.
The cleaning apparatus 1 comprises a support 4 erected on a guide 2 and an elevation frame 6 guided and moved up and down by a linear guide 5 provided on the support 4. The elevation frame 6 is an elevation motor It is connected to an endless chain 8 which is reciprocated by 7 and is moved up and down as the endless chain 8 travels in the vertical direction.

The cleaning device 1 is rotated in the central axial portion of the tubular body 11 having a circular cross-section, which is disposed in the vertical direction and whose upper end portion is fixed to the distal end portion of the elevating frame 6, and as shown in FIG. A hollow rotary shaft 12 is rotatably supported. A cleaning pipe 13 to which a cleaning liquid is supplied is fixedly disposed inside the rotary shaft 12, and a gap between an outer peripheral surface of the cleaning pipe 13 and an inner peripheral surface of the rotary shaft 12 is a gas passage 14. . The gas passage 14 is in communication with the atmosphere through a communication hole 12 a bored in the rotary shaft 12 and a communication hole 11 a bored in the tubular body 11.
The upper end portion of the rotary shaft 12 rotatably penetrates the elevating frame 6 and extends upward, and a gear 16 is fixed to the upper end portion. The gear 16 is in mesh with the gear 18 of the drive motor 17 shown in FIG. 1, and the rotary shaft 12 is rotationally driven by the drive motor 17 via the gears 16 and 18.
The upper end portion of the cleaning pipe 13 extends upward through the gear 16 and is connected to a horizontal pipe 20 provided on the elevating frame 6 through a rotary joint 19 provided on the upper end portion. The pipe 20 is connected to a supply source of cleaning liquid (not shown) via the flexible hose 21 and the pipe 22 provided on the support 4.

As shown in FIG. 2, a substantially box-like connection support member 27 whose upper side is opened is fixed to the lower end portion of the rotation shaft 12, and the opening portion of the connection support member 27 is a lower end portion of the tube 11. It is closed by the lid member 28 attached to. At this time, the opening of the connection support member 27 is closed by the seal member 29 fixed to the lid member 28 side, but the connection support member 27 is rotatable relative to the seal member 29.
The connection support member 27 is provided with a hollow rotation shaft 30 which can rotate around the rotation shaft 12 and is rotatable in the direction orthogonal to the rotation shaft 12. A washing nozzle 31 for jetting a washing solution is provided at the tip. The direction of the cleaning nozzle 31 is set to be directed to the side of the rotary shaft 12 by a required angle from the direction orthogonal to the turning rotary shaft 30.
A bevel gear 37 is fixed to an end portion of the turning rotary shaft 30 on the side of the rotary shaft 12, and the bevel gear 37 is meshed with a bevel gear 38 fixed to the tube 11 side. Therefore, when the connecting and supporting member 27 is rotated integrally with the rotating shaft 12, the bevel gear 37 fixed to the pivoting rotating shaft 30 turns around the bevel gear 38 while maintaining meshing with the bevel gear 38. At the same time, the pivot shaft 30 is rotated.

An inner pipe 39 is provided in the inside of the turning rotary shaft 30, and a cleaning fluid passage 40 is formed in the inner pipe 39, and a gas passage 41 is formed in the outside. One end of the cleaning fluid passage 40 is in communication with the cleaning pipe 13, and the other end is in communication with the cleaning nozzle 31. Further, one end of the gas passage 41 communicates with the gas passage 14, and the other end communicates with the cleaning nozzle 31.
In the present embodiment, a gas such as air supplied from the outside flows into the gap between the tubular body 11 and the rotary shaft 12 through the communication hole 11a, and is further rotated through the communication hole 12a formed in the rotary shaft 12. The gas flows into the gas passage 14 between the shaft 12 and the cleaning pipe 13 and is further supplied to the cleaning nozzle 31 via the gas passage 41 between the inner pipe 39 and the pivot shaft 30. The gas flows into the cleaning liquid by the ejector action based on the ejection of the cleaning liquid from the cleaning nozzle 31 to form a gas-liquid mixed flow, whereby an efficient cleaning action can be obtained.

Further, a lid 45 for closing the opening 3a of the object 3 to be cleaned is provided at the upper part of the tubular body 11 when the cleaning nozzle 31 is made to enter the internal space of the object 3 to be cleaned.
In the embodiment shown in FIG. 2, the lid 45 is fixed to the tube 11 and is moved forward and backward with the cleaning nozzle 31 by advancing and retracting the tube 11; Is provided with an annular second lid member 47 (see FIG. 3) supported by the first lid member 46 and whose lower surface can be in close contact with the opening 3a of the object 3 to be cleaned.
An annular support member 48 for supporting the second lid member 47 is fixed to the lower surface of the first lid member 46, and the support member 48 is loosely fitted in the inner peripheral portion of the second lid member 47. And a flange portion 48b projecting radially outward from the lower portion of the first cylindrical portion 48a. The inner peripheral portion of the second lid member 47 is placed on and supported by the flange portion 48 b of the support member 48.
Further, at the outer peripheral portion of the second lid member 47, a cylindrical portion 49 surrounding the opening 3a when the second lid member 47 is placed on the opening 3a of the object 3 to be cleaned is provided.

  Furthermore, in the present embodiment, a labyrinth means 50 for suppressing the leakage of the cleaning liquid to the outside from the gap between the first lid member 46 and the second lid member 47 is provided. The second cylindrical portion 50a provided on the upper surface inner peripheral portion of the lid member 47 and surrounding the outer peripheral surface of the first cylindrical portion 48a, and the outer surface of the flange portion 48b provided on the lower surface of the second lid member A third cylindrical portion 50b surrounding the portion, and an inclined portion 50c that protrudes obliquely inward in the radial direction from the lower portion of the third cylindrical portion 50b and annularly covers the lower surface of the flange portion 48b.

In the above configuration, when the object to be cleaned 3 such as a tank is carried to the predetermined position of the guide 2 with the elevating frame 6 positioned at the rising end position, the elevating motor 7 is driven to move the chain The raising and lowering frame 6 is lowered via 8 so that the cleaning nozzle 31 provided at the lower end of the tube 11 enters the inner space of the object 3 to be cleaned. At the same time, the lid 45 is also lowered, and the second lid member 47 is first placed on the opening 3 a of the object 3 to be cleaned. When the second lid member 47 is placed on the opening 3a of the object 3 to be cleaned, the descent is stopped, but the first lid member 46 attached to the tube 11 is the second lid whose descent is stopped The member 47 is slightly lowered and stopped while forming a gap with respect to the second lid member 47.
Under the present circumstances, even if the to-be-cleaned object 3 is carried in in the state which inclined to the said predetermined position, as shown in FIG. 3, the lower surface of the 2nd lid member 47 is opened while following the inclination of the to-be-cleaned object 3 The second cover member 47 can close the outer peripheral portion of the opening 3 a because the entire area of the portion 3 a is in close contact. In addition, although a slight gap is generated between the first lid member 46 and the second lid member 47, it can be closed by the first lid member.

Thus, when the cleaning nozzle 31 is inserted into the internal space of the object 3 to be cleaned, the drive motor 17 is driven to rotate the rotary shaft 12, and the high pressure cleaning fluid is supplied from the cleaning fluid supply source. 21 is supplied to the cleaning nozzle 31 via the pipe 20, the rotary joint 19, the cleaning pipe 13 and the cleaning liquid passage 40.
When the rotation shaft 12 is rotated, the turning rotation shaft 30 starts turning around the rotation shaft 12, and the turning rotation shaft 30 starts axis rotation due to the engagement of the bevel gears 37, 38. Thus, the cleaning nozzle 31 starts to revolve around the rotation shaft 12 and rotate around the rotation rotation shaft 30, so that the gas-liquid mixed flow jetted from the cleaning nozzle 31 is the internal space of the object 3 to be cleaned. The three-dimensional spray on the inner surface of the inner surface of the inner wall, and accurate and efficient cleaning will be performed to every corner. In addition, the washing | cleaning liquid in the case of the washing | cleaning flows out outside, for example from the drainage port 51 (refer FIG. 1) formed in the lower part of the to-be-washed | cleaned material 3. FIG.

The cleaning liquid mixed with the gas and liquid jetted from the cleaning nozzle 31 is also sprayed toward the gap between the first lid member 46 and the second lid member 47, but a labyrinth means is used for this portion Since 50 is provided, it is possible to prevent the cleaning liquid from leaking out of the gap.
In particular, as shown in FIG. 4A, when the cleaning liquid is sprayed toward the inner peripheral surface of the opening 3a, the inclined portion 50c constituting the labyrinth means 50 is the inner periphery of the opening 3a. It can be prevented from being reflected by the surface towards the gap. In addition, even when the cleaning liquid is jetted toward the gap, the cleaning liquid escapes to the opening 3a side (see FIG. 4B) or the first lid member 46 on the inner side than the first cylindrical portion 48a. Since it can escape to the side (see FIG. 4C), it is possible to suppress the leakage of the cleaning liquid to the outside from the gap.
Then, in the case shown in FIG. 4 (b), the cleaning liquid is guided to the opening 3a side by the inclined portion 50c, whereby the inner peripheral surface of the opening 3a can be cleaned favorably. You can get the effect.
Further, in the present embodiment, in order to prevent the cleaning liquid from leaking from the gap between the first cover member 46 and the second cover member 47, no packing, bellows or the like is used. Compared with the case where it is provided, the operational effect of being excellent in hygiene and durability is obtained.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, the positional relationship between the first cover member 56 and the second cover member 57 which constitute the cover 55 is different from that of the first embodiment. It is upside down.
That is, in the present embodiment, the inner peripheral portion of the second cover member 57 is placed and supported on the upper surface of the outer peripheral portion of the first cover member 56 fixed to the pipe body 11. An annular support member 58 is fixed on the top surface to prevent the second cover member 57 from falling off the first cover member 56. The support member 58 includes a fourth cylindrical portion 58a loosely fitted in the inner peripheral portion of the second cover member 57, and a radially outward projection from an upper portion of the fourth cylindrical portion 58a. And a flange portion 58 b for preventing the 57 from being separated from the first lid member 56.

Also in the present embodiment, there is provided a labyrinth means 60 for suppressing the leakage of the cleaning liquid to the outside from the gap between the first lid member 56 and the second lid member 57. A fifth cylindrical portion 60a provided on the upper surface of the second cover member 57 and surrounding the fourth cylindrical portion 58a, and a sixth cylindrical member provided on the lower surface of the second cover member 57 and surrounding the outer peripheral portion of the first cover member 56 A cylindrical portion 60b, a seventh cylindrical portion 60c provided on the lower surface of the first lid member 56 and loosely fitted in the sixth cylindrical portion 60b, and a radius from the lower portion of the sixth cylindrical portion 60b The inclined portion 60d protrudes obliquely inward in the direction to cover the lower surface of the seventh cylindrical portion 60c.
The other structure is the same as that of the first embodiment, and the same or corresponding parts as those of the first embodiment are indicated by the same reference numerals as the first embodiment.
It is apparent that the same effects as those of the first embodiment can be obtained also in such a configuration.

Note that, without fixing the first lid members 46 and 56 to the tube 11, for example, a locking portion is installed at the lower portion of the tube 11, and the locking portion is provided so as to be able to move up and down in the tube 11. It is also possible to configure so as to place one lid member 46, 56 thereon. In this case, when the tube 11 is lowered to cause the cleaning nozzle 31 to enter the internal space of the object to be cleaned 3, the second lid members 47 and 57 first open the opening of the object to be cleaned 3 in the process. 3a stops contact with the second lid members 47 and 57, and the tube 11 is further lowered and washed. It is also possible to change the height of the nozzle 31 and to perform cleaning while moving the cleaning nozzle up and down.
Further, the labyrinth means 50 and 60 is not intended to be limited to the configuration illustrated, Ru can be formed of the various configurations.

REFERENCE SIGNS LIST 1 cleaning apparatus 3 object to be cleaned 3a opening 31 cleaning nozzle 45, 55 lid 46, 56 first lid member 47, 57 second lid member 48, 58 support member 48a first tubular portion 48b, 58b flange portion 50, 60 Labyrinth means 50a Second cylindrical portion 50b Third cylindrical portion 50c, 60d Inclination portion 58a Fourth cylindrical portion 60a Fifth cylindrical portion 60b Sixth cylindrical portion 60c Seventh cylindrical portion

Claims (2)

The cleaning nozzle is provided so as to be able to enter and retract into the internal space of the object to be cleaned and injects the cleaning liquid, and a lid for closing the opening of the object when the cleaning nozzle is made to enter the internal space. In a cleaning device for cleaning the inside of the object to be cleaned in a state where the opening of the object to be cleaned is closed by the lid,
A first lid member integrally moved with the cleaning nozzle, and an annular inner circumferential portion supported by the first lid member and a lower surface in close contact with the opening of the object to be cleaned The lower surface of the second lid member is cleaned with the second lid member in a state in which a slight gap is generated between the first lid member and the second lid member when cleaning the object to be cleaned. Rukoto of is brought into contact with the opening by closing the opening, not further inhibit labyrinth means are provided from leaking cleaning liquid to the outside from the gap between the first cover member and the second cover member Cleaning device characterized by   The lower surface of the first lid member is provided with a first cylindrical portion loosely fitted in the inner peripheral portion of the second lid member and a flange portion projecting radially outward from the lower portion of the first cylindrical portion. The cleaning apparatus according to claim 1, wherein an inner circumferential portion of the second lid member is placed on and supported by the flange portion.

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