JP3291603B2 - Airtight closure switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airtight closing / opening device for opening / closing an object to be cleaned provided in a cleaning chamber of a cleaning device.

[0002]

2. Description of the Related Art A conventional hermetic door device for hermetically closing an inlet / outlet of an object to be cleaned in a cleaning chamber provided in a cleaning apparatus will be briefly described with reference to FIG. In the drawing, reference numeral 1 denotes an airtight door device main body mounted on the entrance S1 of the object to be cleaned of the cleaning device S. A pair of guide rails 2 are fixed to both left and right sides of the article S1.

A seal mounting member 3 is fixed below the entry / exit S1 of the object to be cleaned, and a lower seal 4 is attached to the seal attachment 3 over the entire width of the entrance / exit S1 of the object to be cleaned. I have.

Further, an upper seal 5 is fixed on the upper side of the entry / exit S1 of the article to be washed over the entire width of the entrance / exit S1 of the article to be washed. An inclined surface 5a which is inclined outward is formed on an upper portion of the upper seal 5.

[0005] An airtight door 6 is slidably fitted to a pair of guide rails 2 fixed on both sides of the object S1 to be cleaned, and a door seal 7 is fixed to an upper end of the airtight door 6. ing. The lower part of the door seal 7 is formed with an inclined surface 7a that can be engaged with the inclined surface 5a of the upper seal 5 mounted above the entry / exit S1 for the object to be cleaned.

[0006] A bracket 9 is fixed to an upper portion of the cleaning device S, and a door drive cylinder 8 is fixed to and supported by the bracket 9. The piston rod 8a of the door drive cylinder 8 is connected via a knuckle 10 to a connection fitting 11 fixed to the airtight door 6.

[0007] The conventional airtight door device for a washing room constructed as described above firstly has a door driving cylinder 8 as shown in the figure.
The piston rod 8a is shortened and the airtight door 6 is lifted upward to open the object-to-be-cleaned inlet / outlet S1. (Not shown) is carried into a predetermined position in the cleaning room.

When the object to be cleaned is carried into a predetermined position in the cleaning chamber, the door drive cylinder 8 is operated, and its piston rod is moved.
8a is extended and the hermetic door 6 is lowered.

When the hermetic door 6 is lowered, the lower end of the hermetic door 6 comes into close contact with the lower seal 4 and the inclined surface 7a formed on the upper end of the hermetic door 6 below the door seal 7 forms an upper portion of the upper seal 5. In close contact with the inclined surface 5a provided on the front surface. That is, the article S1 to be washed in and out of the washing room is sealed by the airtight door 6.

The object S1 to be cleaned in the cleaning room is provided with an airtight door 6.
In the cleaning chamber, the cleaning liquid is ejected from a jet nozzle (not shown) provided in the cleaning chamber to clean the object to be cleaned.

At this time, since the object to be cleaned is cleaned in a state where the cleaning chamber is completely closed, scattering of the cleaning liquid during cleaning to the outside is prevented and noise generated during cleaning is suppressed. .

When the cleaning of the object to be cleaned in the cleaning chamber is completed, the door cylinder 8 is operated again, the piston rod 8a is shortened, the airtight door 6 is raised, and the door is opened, and the door is opened and closed by a carrying-in / out device (not shown). Loading and unloading of objects to be washed
Removed from S1, one washing cycle is completed.

[0013]

However, the cleaning chamber is formed as a cleaning tank for storing a cleaning liquid, and a side wall of the cleaning tank is provided with an inlet / outlet for an object to be cleaned. Into the predetermined position in the cleaning tank, the object to be cleaned is sealed in an airtight manner, the cleaning liquid is stored, and the high-pressure cleaning liquid is ejected from the high-pressure cleaning nozzle provided in the cleaning tank to discharge the cleaning liquid in the cleaning tank. In a cleaning apparatus that is stirred and performs cleaning while rotating an object to be cleaned, during cleaning,
There is a problem that the cleaning liquid leaks from the sliding portion between the pair of guide rails and the airtight door described above. Therefore, such a cleaning device has a problem that the above-described hermetic door device cannot be applied.

Further, in order to prevent the cleaning liquid from leaking from the sliding portion between the pair of guide rails and the airtight door, even if a seal is provided on the sliding portion, the adhesion of the airtight door to the seal is weak. During cleaning, due to the water pressure of the cleaning liquid in the cleaning tank,
There was a problem that the cleaning liquid leaked from the seal. In particular,
In the case where the seal was brought into contact with the seal by elevating the seal and the seal was worn, the leakage was large.

Of course, it is conceivable to provide an entry / exit port for the object to be cleaned above the cleaning tank and carry in / out the object to be cleaned through the entrance / exit port for the object to be cleaned. In this case, the object to be cleaned is put into the cleaning tank. The device for loading the object to be cleaned becomes large-scale,
There is a problem in that the size of the cleaning device increases and the manufacturing cost increases.

The present invention has been made to solve the above-mentioned conventional problems, and stores a cleaning liquid in a cleaning tank and spouts the cleaning liquid from a high-pressure cleaning nozzle in the cleaning tank to stir the cleaning liquid. It is an object of the present invention to provide an airtight closing opening / closing device which can clean and carry a cleaning object carrying-out port in a cleaning apparatus for cleaning a cleaning object, has a simple structure, and is inexpensive to manufacture.

[0017]

According to the present invention, as a means for solving the above-mentioned conventional problems, there is provided an airtight closing and opening device for hermetically closing an opening provided in a wall portion of a liquid tank. The wall portion, two linear guide rail portions extending in parallel upward, and formed continuously with the two linear guide rail portions, inclined from the upper side to the lower side center of the liquid tank opening, A guide rail comprising a substantially U-shaped hermetic closing guide rail portion formed so as to surround the portion is hermetically fixed, and at least the hermetic closing guide rail portion of a guide groove formed over the entire area of the guide rail. A seal member is disposed in a seal member mounting groove formed at the bottom of the groove, and the guide rail has a base end side slidably fitted to the guide grooves of both straight guide rail portions of the guide rail,
A hermetic door having a distal end portion having substantially the same shape as the shape of the hermetic closing guide rail portion and capable of engaging with the guide groove of the hermetic closing guide rail portion is provided so as to be movable up and down. Lifting means for raising and lowering is provided in the liquid tank.

[0018]

In the present invention, when the object to be cleaned is cleaned in the liquid tank, the lifting drive means for raising and lowering the airtight door is operated to position the airtight door at the rising end and open the opening of the liquid tank. .

Then, when the object to be cleaned is carried into the liquid tank through the opening and positioned, the elevation drive means is operated to lower the hermetic door to close the opening hermetically.

At this time, the hermetic door descends while the base end side of the hermetic door is guided by the linear guide rail portion of the guide rail, and when reaching the descending end, the distal end portion of the hermetic door is guided by the guide groove of the hermetic closing guide rail portion. Engages with the seal member mounting groove formed by the stepped portion. Then, the seal member of the seal member mounting groove is pressed by the extension force of the lifting drive means,
The opening is hermetically closed.

When the opening of the liquid tank is airtightly closed, a cleaning liquid is supplied to the liquid tank, and a high-pressure cleaning liquid is jetted toward the object to be cleaned inside the liquid tank, and the cleaning object is rotated while rotating the object to be cleaned. Is performed. At this time, no leakage of the cleaning liquid from the liquid tank occurs.

When a predetermined cleaning cycle is completed, the cleaning liquid in the liquid tank is drained, and the lifting / lowering driving means is operated again to raise the airtight door to return to the original position.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

A cleaning object carrying port S1, which is an opening, is provided on a wall of a cleaning tank S2, which is a liquid tank of the cleaning device S.
An airtight closing and opening device main body 20 is attached to the article to be washed in / out S1.

A guide rail 21 surrounding the object S1 is hermetically fixed to the wall of the washing tank S2. The guide rail 21 includes two linear guide rails 22 extending in parallel upward and a substantially U-shaped airtight closed guide rail 23.
It is schematically composed of

Both ends of the airtight block guide rail 23 are connected to the two linear guide rails 22, and the lower side than both ends is from the upper side to the lower side center of the cleaning object S1 of the cleaning tank S2 from above. And is fixed so as to surround the article to be washed in / out S1.

As shown in FIG. 4, the guide rail 21
A guide groove having a substantially U-shaped cross section over the entire area of the guide rail 21
24 are formed. The guide groove 24 is provided opposite to the inner wall plate 25 and the inner wall plate 25 which is air-tightly fixed to the wall of the cleaning tank S2, and extends from the inner wall plate 25 inward in the width direction of the entry / exit S1 of the object to be cleaned. , Is roughly constituted by a long outer wall plate 26 and a bottom plate 27 interposed between the outer wall plate 26 and the inner wall plate 25 and positioned on the outside in the width direction of the entry / exit S1 for the object to be cleaned. .

As shown in FIGS. 5 and 1, the airtight block guide rail section is located at a proper position near the lower portion of the linear guide rail section 22, that is, from the proper position on the airtight block guide rail section 23 side of the linear guide rail section 22. Guide grooves on all 23 areas
A step 27 'is provided on the bottom plate 27 forming the groove bottom of the groove 24, and a seal member mounting groove 24' is formed on the bottom plate 27 of the guide groove 24 by the formation of the step 27 '.

In this embodiment, the seal member mounting groove 24 'formed at the bottom of the guide groove 24 is provided from the vicinity of the lower portions of the two linear guide rail portions 22 to the entire area of the hermetically closed guide rail portion 23. Virtually airtight obstruction guide rail 23
May be provided over the entire area.

A packing 28 is interposed between the inner side wall plate 25 and the bottom plate 27 of the guide groove 24, and a seal member 29 is mounted in the seal member mounting groove 24 '.

Further, as shown in FIG. 5, notches 25 'are formed at appropriate positions in the inner wall plate 25 at appropriate intervals, and a seal member presser 30 is fixed to the notch 25'. ing. The distal end of the seal member presser 30 is appropriately engaged with the seal member 29 to stably support the seal member 29 at a predetermined position.

An airtight door 31 is engaged with the guide groove 24 of the guide rail 21. The base 31a of the hermetic door 31 is slidably fitted in the guide groove 24 of the linear guide rail 22 of the guide rail 21, and the distal end 31b is a hermetic guide rail.
The airtight closing guide rail portion 23 is formed in substantially the same shape as the shape of the airtight closing guide rail portion 23 so as to engage with the 23 guide grooves 24.

A pair of guide rollers 32 is mounted on the base end 31a of the airtight door 31, and the pair of guide rollers 32 rotatably engage with the outer wall plate 26 at the top of the linear guide rail portion 22. ing.

A bracket 9 is fixed to the upper surface of the cleaning device S, and a door drive cylinder 8 serving as a vertical drive means is fixed to and supported by the bracket 9. The piston rod 8a of the door drive cylinder 8 is connected to a connection fitting 11 fixed to the airtight door 31 via a knuckle 10.

As shown in FIG. 1, a fall prevention bracket 33 is fixed to an appropriate position of the cleaning device S. A pin hole 33 ′ is formed in the tip of the fall prevention bracket 33.

During the maintenance work of the cleaning device S, the fall prevention bracket 33 is inserted into the pin hole 33 'with a fall prevention pin (not shown) in a state where the airtight door 31 is raised, and is engaged with the airtight door 31 to be airtight. This prevents the door 31 from moving and prevents the airtight door 31 from falling.

Next, the operation of this embodiment will be described. First,
As shown in FIGS. 1 and 2, the piston rod 8a of the door drive cylinder 8 is shortened, and the hermetic door 31 is at the rising end, that is, at the original position. Of course, the fall prevention pin (not shown) is removed from the pin hole 33 'of the fall prevention bracket 33, and the hermetic door 31 can be moved up and down.

Therefore, the object W to be cleaned is placed in the cleaning tank of the cleaning device S.
When it is positioned at a predetermined position in the cleaning tank S2 from the object to be cleaned S / W entrance S1 provided on the wall of S2, the door drive cylinder 8 is operated to extend the piston rod 8a as shown in FIG. The hermetic door 31 is lowered to the position indicated by the imaginary line.

On the other hand, the airtight door 31 is a base end 31 of the airtight door 31.
a is guided by the linear guide rail portion 22 of the guide rail 21 and descends.
Engages with the guide groove 24 of the hermetically closed guide rail portion 23.
Then, the seal member 29 is pressed by the extension force of the piston rod 8a of the door drive cylinder 8, and the article S1 to be cleaned is hermetically closed.

When the cleaning object carrying-in / out port S1 is airtightly closed, the cleaning liquid S3 is supplied to the cleaning tank S2, and the high-pressure cleaning liquid is directed toward the cleaning object W from a cleaning nozzle (not shown) provided inside the cleaning tank S2. The cleaning is performed while spouting and rotating the object to be cleaned W.

When a predetermined cleaning cycle is completed, the cleaning tank
Since the cleaning liquid S3 in S2 is discharged, the door driving cylinder 8
Operates again to shorten the piston rod 8a, raise the airtight door 31, and return to the original position.

Since the level of the cleaning liquid S3 supplied to the cleaning tank S2 has an overflow port at a predetermined position in the cleaning tank S2, the high-pressure cleaning liquid is directed from the cleaning nozzle toward the workpiece W during the cleaning cycle. Even if the cleaning liquid S3 is ejected, the cleaning liquid S3 is discharged from the overflow port, is maintained at a substantially constant level, and does not leak out from the gap between the airtight door 31 and the guide rail 21.

During the cleaning cycle, the cleaning solution in the cleaning tank S2 is
Even if S3 undulates and the liquid level rises, a sealing member mounting groove is formed over the entire area of the hermetically closed guide rail portion 23 from above the liquid surface of the cleaning liquid S3 stored in the cleaning tank S2, and further, the sealing member Since the seal member 29 is provided in the mounting groove 24 ', the cleaning liquid S3 does not leak as described above.

Further, if the upper seal 5 and the door seal 7 provided on the hermetic door device main body 1 as shown in FIG. 6 are applied to the hermetic closing / opening device of the present invention, the object S1 can be almost completely closed. It can be airtightly closed.

Although the example in which the hermetic closing / opening device of the present invention is applied to a cleaning device has been described above, the hermetic closing / opening device is not limited to this, and any device that hermetically closes a liquid tank can be used. , Can be applied as appropriate.

[0046]

According to the present invention, as described above, the opening of the cleaning device can be closed in an airtight manner. This prevents the cleaning liquid from leaking out of the cleaning device during cleaning, and can reliably clean the object to be cleaned. Therefore, the hermetic closing and opening device of the present invention can be applied to a cleaning device having an opening in a liquid tank. Further, noise generated during cleaning can be further suppressed, and the working environment can be improved.

Since the present invention has a very simple structure,
Maintenance work can be performed very easily, and maintenance costs can be reduced.

Further, since the structure is extremely simple, the conventional door device can be easily modified to form an airtight closing / opening device.

[Brief description of the drawings]

FIG. 1 is a front view of an airtight closing and opening device according to an embodiment of the present invention.

FIG. 2 is a side view of that of FIG.

FIG. 3 is a view on arrow AA of FIG. 1;

FIG. 4 is an enlarged view of a portion B of FIG.

FIG. 5 is an enlarged view of a portion C of FIG.

FIG. 6 is a front view of a conventional hermetic door device.

[Explanation of symbols]

 8 Door drive cylinder 21 Guide rail 22 Linear guide rail section 23 Airtight block guide rail section 24 Guide groove 24 'Seal member mounting groove 29 Seal member 31 Airtight door 31a Base end 31b Tip S1 Washing object entrance S2 Wash tank

Claims (1)

(57) [Claims] 1. A hermetic closing / opening device for hermetically closing an opening provided in a wall of a liquid tank, wherein two linear guide rails extending upward and parallel to the wall of the liquid tank. A substantially U-shaped hermetic closing guide rail portion formed continuously with the linear guide rail portion, inclined from the upper side to the lower side center of the liquid tank opening, and formed so as to surround the opening; A guide rail made of the following is hermetically fixed: a seal member is disposed in a seal member mounting groove formed at least in a groove bottom of the hermetically closed guide rail portion of a guide groove formed over the entire area of the guide rail; A base end side of the rail is slidably fitted in the guide grooves of both straight guide rails of the guide rail, and a distal end side has substantially the same shape as the shape of the hermetically closed guide rail, and Blocking guide rail A hermetic door formed so as to be able to engage with said guide groove is provided so as to be able to move up and down, and an elevating drive means for raising and lowering the hermetic door is provided in the liquid tank.