JPS6314255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a filter replacement device for a large-scale air conditioner in a nuclear power plant or the like, and more particularly to a filter replacement device installed in a grid-shaped filter storage rack.

[Prior art]

Traditionally, replacing filters in large-scale air conditioners has often been done manually, but it is possible to automatically attach and detach filters in a short time using a single machine, and to remove used filter units during replacement work. There was a need for a filter replacement device that would prevent contaminated air from leaking through the hole through which the filter was removed.

[Purpose of the invention]

The purpose of this invention is to provide an air conditioner that automatically attaches and detaches filters in a short time using a single machine, and that prevents contaminated air from leaking from the hole through which a used filter unit is removed during replacement work. To provide a filter exchange device for use in the present invention.

[Key points of the invention]

In this invention, the lower end of the filter unit is fixed to the elevating frame by the movement of a pair of filter unit gripping devices that traverse the transverse frame that rotates on the elevating frame that runs parallel to the surface of the filter storage rack. When removing a used filter, the cover is extended and sealed tightly against the surface of the filter storage rack. After installing a new filter, the cover is stowed and the cover is closed. It is configured to be separated from the surface.

[Implementation row of the invention] FIG. 1 is a side view of one implementation row of the air conditioning filter replacement device according to the present invention, FIG. 2 is a front view, and FIG.
The figure is a perspective view of the lifting frame, FIG. 4 is a side view of the traversing device, FIG. 5 is a front view of the traversing device, FIG. 6 is a front view of the filter unit gripping device, and FIG.
Figure 8 is a cross-sectional view of Figure 7.
The sectional view taken in the direction of arrows, and FIGS. 9 and 10 show plan views.
11 to 14 are explanatory views of the process of attaching and detaching the cover.

The traveling trolley 1 is an I-shaped steel 3 laid on a floor 2.
The vehicle travels via wheels 5 on rails 4 fixed on top of the vehicle. The traveling bogie 1 is operated by an electric motor 6 with a brake, and is driven by a reduction gear 7, a small gear 8, an intermediate gear 9, and a large gear 1.
0, the vehicle travels by rotating the wheels 5 through the long axis 11. In order to prevent skewing, the rail 4 is sandwiched between a pair of rollers 13 that rotate horizontally around a shaft 12 fixed to the carriage 1. A hook 14 is attached to the traveling trolley 1 to prevent it from falling.

A pillar 15 is fixed to the traveling truck 1, and a lifting rail 16 and a lifting rack 17 are attached to the pillar 15.

The elevating frame 20 moves up and down along the pillar 15.
The lifting frame 20 is fixed to a cylinder 21 surrounding the column 15.

A pair of upper and lower brackets 22 are fixed inside the cylinder 21, and a guide roller 23 that rolls along two perpendicular surfaces of the lifting rail 16 is attached to the bracket 22.
and 24 are attached.

The lifting device includes an electric motor with a brake 25 and a bevel gear 2
6. It engages with the elevating rack 17 via a reduction gear 27, a small gear 28, and a large gear 29 to move up and down.

The turning device passes through an electric motor 30, a belt 31, a worm reducer 32, and a small gear 33 to a large turning gear 34.
The transverse frame 40 fixed on the large rotating gear 34 is rotated. The inner race 35 of the swing bearing is fixed to the cylinder 21 and supports the large swing gear 34 via a plurality of rolling balls 36 arranged on the circumference.

The traversing frame 40 is fixed on the swing gear 34. A filter unit gripping device 60 is installed above the traversing frame 40 and is driven by a pair of traversing devices.

The traverse device includes a worm reducer 42, a small gear 43, an intermediate gear 44, and a large gear 4 from an electric motor 41 with a brake.
5, a rack 47 attached to the lower surface of the intermediate arm 46 is driven to cause the intermediate arm 46 to move laterally. The intermediate arm 46 is traversed by wheels 48 along the overhanging portion 40A of the traverse frame 40.

The filter unit gripping device 60 is traversed along the intermediate arm 46 by means of wheels 49. The transverse filter unit gripping device 60 has one end fixed to the filter unit gripping device 60 and an intermediate arm 46.
A chain 51 has its other end fixed to the rear of the overhanging portion 40A of the transverse frame 40 via a sprocket foil 50 attached to the front of the frame, and a chain 51 has one end fixed to the filter unit gripping device 60 and is attached to the rear of the intermediate arm 46. A chain 53 whose other end is fixed to the front of the overhanging portion 40A of the transverse frame 40 via the sprocket wheel 52 is moved by the transverse movement of the intermediate arm 46.

The filter unit gripping device 60 has a shaft 61A rotatably supported at both ends at the upper and lower parts.
and grips 63A, 63B, 63C and 63D fixed to 61B via keys 62.
Drive device 64 for driving the upper grip 63A
A link 67 has one end rotatably fixed to a pin 66 of a crank 65 driven by a crank 65, and the other end of the grip 63A is rotatably fixed to the other end of this link 67 via a pin 68. has been done.

The rotation angle of the crank 65 is determined by limiting the rotation range of the drive device 64 using a limit switch.

In order to transmit the rotation of the upper shaft 61A to the lower shaft 61B, one end thereof is rotatably fixed to the other end of the upper grip 63B via a pin 69, and the other end is attached to the center of the lower grip 63D. A link 71 rotatably fixed via a pin 70 is provided.

The grips 63A, 63B, 63C and 63D are levers 73 attached to the four corners of the filter outer frame 72, respectively.
grab.

When the lever 73 is gripped, it comes into contact with the filter outer frame 72.
The lever 73 has its middle portion rotatably fixed around a pin 74 fixed to the filter outer frame 72, and the other end rotatably fixed to a pin 76 via a pin 75.

The pin 76 slides through the hole in the bracket 77 to allow its tip to move in and out of the filter outer frame 72. The lever 73 is elastically supported at one end by a spring 78 fixed to the filter outer frame 72.

The filter unit gripping device 60A is used exclusively for removing used filters, and the filter unit gripping device 60B is used only for installing new filters.

The filter outer frame 72 is mounted on a filter storage rack 80 erected on the floor surface 2, and a pin 76 is engaged with a cover mounting bracket 81 attached to the filter storage rack 80 to resist wind pressure.

The cover 90 is fixed to the elevating frame 20, has an opening 91 at its tip, and has a structure that can be expanded and contracted in a direction perpendicular to the traveling direction.

A suction cup 92 is attached around the opening 91. The cover 90 is attached to the filter unit gripping device 6.
Cover holding fittings 93 attached to 0A and 60B
It is pressed against the cover mounting bracket 81 by the cover mounting bracket 81 and sealed by the action of the suction cup 92.

When removing a used filter, the filter unit gripping device 60A is used, but if the length of the pin 76 is set to have a gap C with the end face of the suction cup 92 as shown in FIG. Suction cup 9
The used filter can be pulled out without peeling off the filter 2 from the cover mounting bracket 81.

When installing a new filter, the filter unit gripping device 60B is used, but when retracting the filter unit gripping device 60B, the length of the pin 76 is determined by the overlapped length with the end surface of the suction cup 92 in FIG. If so, when the filter unit gripping device 60B is moved back, the cover 90 can be moved backward and peeled off from the cover mounting bracket 81 to be opened.

Next, the driving method will be explained.

The filter replacement device travels with a new filter unit attached to the filter unit gripping device 60B, and stops in front of the filter unit to be replaced.

The filter unit gripping device 60A moves toward the storage rack 80 and stops at a predetermined position.
At this time, the cover 90 comes into close contact with the cover mounting bracket 81.

Gripping 63A, 63B, 6 by the drive device 64
3C and 63D are driven in the gripping direction to release the lever 73.
When the pin 76 is grasped and brought into contact with the filter outer frame 72, the tip of the pin 76 retreats into the filter outer frame 72 and is released from the cover attachment fitting 81 of the filter storage rack 80.

The filter unit grasping device 60A grasps the used filter unit and retreats, and the traversing frame 40
rotates 180 degrees and the filter unit gripping device 60
B takes his place. Filter unit gripping device 60B
traverses and stops at a predetermined position.

The crank 65 reverses and grabs 63A, 63B,
Release 63C and 63D.

The lever 73 rotates under the action of the spring 78, causing the tip of the pin 76 to protrude outside the filter outer frame 72, and locks it to the cover mounting bracket 81 of the filter storage rack 80, allowing the new filter unit to be removed. frame 72
to store.

The filter unit gripping device 60B is retracted.
At this time, the cover 90 is peeled off from the cover mounting bracket 81 by the pin 76 and retreated together with the filter unit gripping device 60B.

The filter exchange device travels forward to transport the used filter unit to the volume reduction treatment facility, then travels backward to the new filter unit supply facility, where a new filter unit is installed, and the above operations are repeated.

[Modifications and application examples of the invention]

When the filter storage racks 80 are installed on both sides of the running rail, the openings of the cover 90 may be provided at both ends, and one end may be sealed with a lid.

Also, depending on the structure of the transverse frame 40, the cover 9
The structure of 0 is also transformed. The structure of the cover 90 and the method of attaching and detaching the cover 90 are also not limited to the implementation.

〔Effect of the invention〕

In this invention, the lower end of the filter unit is fixed on the lifting frame by the movement of a pair of gripping devices that traverse on the traversing frame that rotates on the lifting frame running parallel to the surface of the filter storage rack. Since the telescoping cover that encloses the transverse frame and has an opening at the front end can be attached to and removed from the cover mounting bracket of the filter storage rack, contaminated air can be removed from the hole from which the used filter unit was removed during filter replacement work. will not leak.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of a filter exchange device for an air conditioner according to the present invention, FIG. 2 is a front view,
Fig. 3 is a perspective view of the lifting frame, Fig. 4 is a side view of the traversing device, Fig. 5 is a sectional view of the traversing device, Fig. 6 is a front view of the filter unit gripping device, and Fig. 7 is the same as that of Fig. 6. -A sectional view taken in the direction of the arrows, Fig. 8 is a sectional view taken in the direction of the arrows in Fig. 7, Figs. 9 and 10 are plan views, and Figs. 11, 12, 13, and 14 show how to attach and remove the cover. An explanatory diagram of the process is shown. 20...Elevating frame, 40...Transverse frame, 6
0... Filter unit gripping device, 76... Pin, 8
1...Cover mounting bracket, 90...Cover, 92...Sucker.

Claims (1)

[Claims] 1. By the movement of a pair of filter unit gripping devices that traverse on a traversing frame that rotates on an elevating frame that runs parallel to the surface of the filter storage rack, the lower ends of the filter unit gripping devices are fixed on the elevating frame and the said traversing frame is fixed. 1. A filter replacement device for an air conditioner, characterized in that a retractable cover that encloses the air conditioner and has an opening at the front end is attached to and detached from a cover mounting bracket of a filter storage rack.