JPH0728936Y2 - Paint booth air filter - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is provided at the boundary between the air supply chamber and the coating room of a coating booth for automobile painting, and cleans the outside air supplied to the air supply chamber for coating. Regarding the air filter of the painting booth sent to the room.

(Prior Art) Generally, spray coating of an automobile body is performed in a coating chamber located in the middle stage of a tunnel-type coating booth in an atmosphere in which air flows downward from above at a low speed. Air is
It is taken in from the outside air, sent to the air supply chamber after the temperature and humidity are adjusted, and then rectified there and supplied to the coating chamber. The dust contained in the outside air causes coating film defects such as spots, which significantly deteriorates coating quality and greatly deteriorates the finished appearance. Therefore,
Conventionally, an air filter for purifying air is provided at the boundary between the air supply chamber and the coating chamber.

Such an air filter basically has a structure in which a mesh-shaped retainer is supported between each of the filter frames assembled in a lattice shape, and the filter material is laid thereon.

(Problems to be solved by the invention) Therefore, the coating quality of an automobile body is an extremely important judgment factor in deciding whether the product inspection is acceptable or not. Therefore,
It is absolutely necessary to prevent dust from entering the coating chamber from the air supply chamber as the air passes through the filter, even if the amount is very small.

In order to meet such a demand, various proposals have conventionally been made to improve the structure of the air filter, particularly the structure near the gap between the palletizer or the filter material and the filter frame.

One improvement is to use a suitable caulking material to seal between the palletizer and the filter frame.

However, this method is used when the palletizer becomes dirty.
The cleaning had to be done while it was installed in the booth, and the cleaning work of the palletizer was extremely troublesome.

Further, the palletizer is fastened and attached, and the removal and attachment of the palletener inevitably require a complicated sealing work, and replacement of the palletator itself is extremely troublesome. In fact, the exchange has not been carried out very often.

Further, in the above method, the caulking material deteriorates with time due to its properties, so when the dirty filter material is periodically replaced with a new filter material, the caulking material collapses and part of it becomes powder. When the replacement work is performed, a new caulking material needs to be used again for sealing. A further problem is that in the subsequent coating operation, the powder of the caulking material which has collapsed may fall onto the surface of the automobile body of the article to be coated, resulting in poor coating.

As another improvement plan, as described in Japanese Utility Model Laid-Open No. 62-140969, a plurality of receiving seats (rims) are vertically formed in the lower part of the filter frame, and the end of the palletizer is formed into the receiving seat and the receiving seat. There is a method of inserting the filter into the gap and fixing the end of the filter material to the uppermost seat surface.

However, this method is superior to the above method in that there is no risk of the deteriorated caulking material falling, but
Each work such as setting of palletizer and tightening and fixing of filter material is complicated and requires a lot of labor and labor, and it takes a very long time to install the entire air filter.

Further, not only the initial installation but also the cleaning and cleaning of the palletizer and the replacement of the filter material in the subsequent maintenance and inspection are very troublesome to remove and reattach.

The object of the present invention is that not only the initial installation work is very easy, but also the cleaning work of the palletizer can be done easily afterwards, and the filter material can be easily replaced. Of course, there is a need to provide an air filter for a paint booth that has a sufficiently high sealability and does not mix unpurified air.The technical problem is that the palletizer is hung on the filter frame and has a removable shape. It is to make a seal structure between the filter frames.

(Means for Solving the Problems) In the present invention, an appropriate number of hangers are provided on both sides of the palletizer, and the hangers can be hung on the filter frame.
Moreover, the structure is such that the end of the filter material is pressed against the side surface of the filter frame by the spring force of the filter retainer to be installed,
Further, the shape and configuration of the press-contacted portion are further devised so that perfect sealability can be obtained.

That is, according to the present invention, an appropriate number of hangers provided on both sides of the palletizer are hooked on the filter frame to be supported between the filter frame and the frame, and the filter material is placed on the palletizer. An air filter formed by rotating a filter retainer attached to the upper surface of the filter frame toward the side surface of the frame by a spring force, and pressing the end portion of the filter material against the side surface of the filter frame.
A cushion material is provided between the hanger and the side surface of the filter frame, and a portion of the filter retainer that comes into pressure contact with the hanger is configured to have a shape corresponding to the outer shape of the hanger. Regarding filters.

The palletizer used in the present invention has a net-like rectangular body,
A plurality of hangers are extended upward on both sides in the longitudinal direction. The hanger has, for example, a substantially U-shape so that it can be hooked on a grid-shaped filter frame assembled at the boundary between the air supply chamber of the coating booth and the coating chamber.

The filter retainer used in the present invention has, for example, a function of a torsion bar spring, and includes a fixed portion attached to the upper surface of the filter frame and a rotatable portion rotatably biased toward the side surface of the filter frame. It consists of a presser frame.

And, the portion of the presser frame that comes into pressure contact with the hanger is
It is formed in a shape corresponding to the outer shape of the hanger. For example, if the inner outer shape of the hanger is a curved surface, the press contact portion of the holding frame also has a similar curved shape. Furthermore, preferably, the filter frame side of the hanger also has a shape corresponding to the surface of the frame,
It is usually good to have a flat shape.

As the cushion material, a rubber material, a resin material, or the like having an appropriate elasticity can be used, and the cushion material is interposed between the hanger and the side surface of the filter frame.

The filter material may be a conventional one, and is installed such that both end portions thereof are pressed against the side surface of the filter frame by the spring force of the filter retainer.

(Operation) In the present invention, the palletizer can be supported between the filter frame and the same frame by simply hooking the several hangers on both sides of the palletizer to the left and right filter frames respectively. Further, the setting of the filter material is completed by placing the filter material on the supported palletizer and then pressing both side ends of the filter material against the side surface of the filter frame by the spring force of the filter retainer. Therefore, the installation of these air filter parts is easy.

Also, when cleaning or replacing the palletizer, first rotate the filter retainer slightly in the direction opposite to the spring biasing direction to remove the end of the filter material, remove it, and then pull the palleter upward to remove the hanger. The palletizer can be removed simply by removing it from the filter frame, and the palletizer can be reattached by reversing the removal procedure (in the same manner as when installing the palletizer). Therefore, it is easy to remove and reattach the palletizer for cleaning or the like.

In addition, the filter material can be replaced by simply removing it from the filter retainer and inserting it into the retainer.
Therefore, the work is easy.

Furthermore, after installation, the spring force of the filter retainer
The edge of the filter material and the side surface of the filter frame are in close contact with each other. At the place where the hanger is interposed between the two, a gap is not formed between the hanger and the side surface of the filter frame after pressure contact due to the elastic action of the cushion material, and since the pressure contact part of the filter retainer has the same outer shape as the hanger,
There is no space between the hanger and the filter holder after pressure welding. Therefore, a high sealing property is obtained, and it is possible to prevent air that does not pass through the filter material from entering the coating chamber from the air supply chamber.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The air filter of the embodiment is, as shown in FIG. 4, at the boundary between the air supply chamber and the coating room of the tunnel type painting booth for automobiles.
A large number of palletizers 1 ... Are supported in the longitudinal direction and the width direction between the filter frames 4 assembled in a lattice shape.

As shown in FIG. 3, the palletizer 1 is a net-shaped rectangular body, and hangers 5 ...
As shown in FIG. 1, the hangers 5 are hooked on the filter frame 4 and are supported between the filter frames 4 and 4. In FIG. 4, reference numeral 8 indicates a hooking position of the hanger 5.

In addition, as shown in FIG. 2, the filter frame 4 has an upper surface.
Attach filter holder 3 to 11. In FIG. 4 and FIG. 4, reference numeral 9 indicates a fixed position of the presser foot 3. The filter retainer 3 has a function of a torsion bar spring, and as shown in FIG. 1, a retainer frame 6 rotatable around a fixed portion of the frame upper surface 11 is directed toward a side surface 10 of the filter frame 4 by an arrow R. It will turn around and urge.

Then, as shown in FIG. 1, the filter material 2 is placed on the palletizer 1, and the end portion of the filter material 2 is pressed against the filter frame side surface 10 by the spring force of the holding frame 6.

Further, as shown in FIG. 5, the hanger 5 has a planar shape on the side of the filter frame side surface 10 to which the hanger 5 is pressed, while having a curved surface on the opposite side. Then, put the cushion material 12 on the frame side surface.
A portion 7 of the holding frame 6 that is pressed against the hanger 5 while being interposed between the hanger 5 and the hanger 5 is curved in a shape corresponding to the curved outer shape of the hanger 5.

Therefore, the spring force of the filter retainer 3 causes the end portion of the filter material 2 to come into close contact with the side surface 10 of the filter frame, and in the press contact portion 7, the spring force and the cushion material 12 are applied.
By the function of, even between the presser frame 6 and the filter material 2 13
Place surrounded by hanger 5, frame side 10 and filter material 2
No gap is formed in 14 either (Fig. 5).

The shape of the press-contacting portion of the holding frame 6 is changed according to the outer shape of the hanger 5. For example, in the case of the hanger 5a having a substantially triangular cross section as shown in FIG. 6, the press-contacting portion 7a has the same shape. It is constructed in a mountain shape corresponding to.

To install this air filter, first hook the hangers 5 ... On the left and right filter frames 4 and 4, respectively.
The palletizer 1 is supported between the filter frame 4 and the same frame 4, and then the filter material 2 is placed on the palletizer 1 and then the holding frame 6 is slightly rotated in the direction opposite to the biasing direction to rotate the filter material. The procedure is performed by inserting both end portions of 2 and pressing the side surface 10 of the filter frame 4 with the spring force of the holding frame 6.

Further, when the dirty retainer 1 is washed after installation, the pressing frame 6 of the filter presser 3 is rotated slightly in the direction opposite to the biasing direction to pull out the end of the filter material 2 to remove the filter material 2. Removal, then pulling up the palletizer 1 to remove the hangers 5 ... from the filter frame 4, remove each palletener 1, and after cleaning the removed palletizers 1, reattach the palletizers 1 and the filter material 2. Follow the same procedure as above for installation.

The replacement of the filter material 2 is performed by removing the filter material 2 from the filter holder 3 and inserting the new filter material 2 between the filter holder 3 and the filter frame 4.

Both tasks were extremely easy.

(Effects of the Invention) As described above, the air filter of the coating booth according to the present invention is a detachable hooking type with a hanger attached to the filter frame and the palletizer attached to the filter frame. Since the structure is pressed against the filter frame by the spring force of the filter retainer after it is placed on top, it is not only easy to perform these initial setting work, but also it is disadvantageous when cleaning or replacing the palletizer. It is possible to remove and install the palletizer itself, which was not done in
Moreover, these operations can be performed very easily, and workability in terms of installation and maintenance is greatly improved.

Moreover, the air filter of the present invention has a sufficiently high sealing property by improving the shape of the pressure contact part of the filter retainer and applying a cushioning material to create a complete sealing structure between the hanger and the filter frame. Therefore, unpurified air is not mixed into the coating room, and the essential requirements as an air filter are satisfied.

[Brief description of drawings]

FIG. 1 is a sectional view showing an air filter according to an embodiment of the present invention, FIG. 2 is a perspective view showing a structure near a filter frame of the air filter of FIG. 1, particularly a shape of a filter retainer, and FIG. The perspective view which shows the palletizer used for the air filter of a figure, FIG. 4 is the top view which shows the air filter of FIG. 1 which was arrange | positioned (a hanger and a filter retainer are not shown.), FIG. 5 is FIG. FIG. 6 is a cross-sectional view showing the vicinity of the portion where the filter retainer presses against the hanger in the air filter of FIG. 6, and FIG. 6 is a cross-sectional view showing a modification of the structure of the portion where the filter retainer presses against the hanger. In the figure, 1 ... palletener 2 ... filter material 3 ... filter presser 4 ... filter frame 5 ... hanger 6 ... presser frame 7, 7a ... parts pressed against the hanger 8 ... hanger hooking position 9 …… Fixed position of filter holder 10 …… Side of filter frame 11 …… Top surface of filter frame 12 …… Cushion material R …… Rotating direction of presser frame

Claims (1)

[Scope of utility model registration request] 1. A palletizer, wherein an appropriate number of hangers provided on both sides of the pallet are hooked on a filter frame to be supported between the filter frame and the frame, and the filter material is placed on the palletizer, and An air filter comprising: a filter retainer attached to the upper surface of the filter frame, which is rotated toward the side surface of the frame by a spring force, and an end portion of the filter material is pressed against the side surface of the filter frame. Is provided between the hanger and the side surface of the filter frame, and a portion of the filter retainer that is in pressure contact with the hanger is configured in a shape corresponding to the outer shape of the hanger.