JPH0536543Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a vibrating fluidized tank for resin coating.

(Prior Art) Resin coating is performed by suspending and supporting an object to be coated, which has been heated to a temperature higher than the melting point of the resin, in a fluidized tank in which resin powder is fluidized.

In this resin coating vibration fluidization tank,
The resin powder is periodically discharged out of the fluidizing tank for maintenance or cleaning of the inside of the fluidizing tank.

Conventionally, the above-mentioned resin powder was discharged by opening a large discharge port provided at a predetermined height from the perforated plate, and discharging the flowing resin powder by carrying it with the air current. .

In addition, Japanese Patent Publication No. 62-46233 discloses that the inside of the trough is partitioned by a perforated flow plate and an auxiliary perforated plate, and
A device is disclosed that stabilizes the fluidized bed by imparting vibration to the trough.

(Problem to be solved by the invention) However, when the flow surface of the flowing resin powder falls close to the discharge port, the discharge of the resin powder decreases, and a considerable amount cannot be discharged, causing the perforated plate to I had a problem with it piling up on top of the .

Discharging the accumulated resin powder requires manual scraping, which takes time. Also, the resin powder must be discharged with the top of the fluidized tank open. When discharging resin powder from the outlet or scraping out resin powder accumulated on a perforated plate, finely atomized resin powder is scattered around, causing a problem in which the working environment is significantly deteriorated. Ta.

(Means for Solving the Problems) The outline of the means according to the present invention for solving the above problems will be explained with reference to FIG. In the vibrating fluid tank for resin coating, in which the air chamber 9 is elastically supported via a spring 8 and the fluid trough 4 is vibrated by a vibration device 6, an opening hole is formed in the side surface of the fluid trough 4. Two powder and granular material outlet ports 1 and 2 are provided, and a damper 11,
12, and the two powder and granular material outlet ports 1,
2 is provided close to the perforated flow plate 10, and its opening diameter is made smaller than the opening diameter of the other powder and granular material outlet, so that the lid 3 that seals the flow trough 4 can be opened and closed. It is characterized by the fact that it is provided in

(Function) Since the present invention is constructed as described above, it has the following functions. That is, since the fluidizing trough is sealed by the lid, fluidizing air can be supplied into the fluidizing trough to increase the pressure inside the fluidizing trough.

In this way, the pressure inside the fluidizing trough is increased, and two powder and granular material outlet ports are provided, and each of the powder and granule material outlet ports is provided with a damper.
By opening the damper at the powder outlet located at a height away from the perforated fluid plate, the pressurized air in the fluid trough flows out from the powder outlet, creating an airflow inside the fluid trough. The resin powder flowing in the flow trough can be discharged along with the airflow from the powder outlet.

Next, when the amount of resin powder in the flow trough decreases, one powder outlet is provided close to the perforated plate and has a small opening diameter. By opening one damper and closing the other damper at the powder outlet, it is possible to generate a strong airflow along the surface of the fluidized porous plate, removing all the resin accumulated on the fluidized or porous plate. It becomes possible to carry the powder and granular material on this airflow and discharge it.

In this way, by providing two powder and granule material outlet, the opening diameter of the powder and granule material outlet provided at a position away from the flow porous plate is increased, and the resin powder floating in the fluidization trough is increased. By increasing the amount of resin discharged and discharging most of the resin powder in a short time, and by providing a powder outlet with a small opening diameter close to the fluidized porous plate, the flow rate of the fluidized porous plate is improved. A strong air current is generated along the surface, and although the amount of discharge is reduced due to the small opening diameter, it is possible to exhaust the small amount of resin powder that accumulates on the surface of the fluidized porous plate. If we take a comprehensive look at the discharge of the resin powder in the flow trough, it becomes possible to discharge all the resin powder in a short period of time.

Moreover, since the fluidizing trough is sealed with a lid, it is possible to prevent the atomized resin powder from scattering around.

(Example) An example of the present invention will be described below. 1st
In the figure, the fluid trough 4 is equipped with a perforated fluid plate 10 at the bottom. This fluid trough 4 forms an air chamber 9 via an auxiliary perforated plate 5, and a base 7
It is elastically supported on the top via a spring 8. 6 is a vibration generator.

Reference numeral 1 denotes a first powder outlet, which is provided at a predetermined height from the flow porous plate 10. 2 is
This is a second powder outlet, which is provided close to the flow porous plate 10, and has an opening diameter smaller than the first powder outlet 1. 11 and 12 are dampers.

3 is a lid that seals the fluid trough 4 and is provided removably. This lid 3 may be rotatably attached as shown in FIG. In FIG. 2, parts that are the same as those in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted.

The operation of this embodiment configured as above will be explained next.

When applying resin coating, remove the lid 3 and proceed as usual. During periodic maintenance and cleaning, the flow trough 4 is sealed by the lid 3.
First, the damper 11 is opened and the resin powder is discharged from the first powder outlet 1.

In this discharge operation, air is supplied from arrow A, and this air flows along arrows B and C and is supplied into a fluidizing trough 4 that is sealed by a lid 3. As a result, the pressure inside the particle size trough 4 is increased. Due to this pressure increase, the resin powder 13 in the fluidizing trough 4 is fluidized, and the first powder and granule material outlet 1 is opened.
An air current is generated in the direction of arrow C→D→a→b, and the resin powder is discharged along this air flow in the direction of arrow a→b.

By increasing the opening diameter of the first powder outlet 1, the amount of resin powder discharged can be increased, and most of the resin powder in the flow trough 4 can be discharged in a short time. It becomes possible to do so.

With this discharge, when the powder surface 14 gradually lowers and reaches near the first powder outlet 1, the proportion of the resin powder 13 mixed in the airflow decreases in the weak airflow, and the actual resin is reduced. Since the amount of granular material 13 to be discharged decreases and it takes a long time to discharge it, at this point, the damper 11 is closed, the damper 12 is opened, and the second granular material outlet 2 is switched.

The timing of this switching can also be done by detecting the level of the powder surface 14, or the timing of the first
It is also possible to perform this by detecting the amount of powder and granular material discharged from the powder and granular material outlet 1.

The second powder outlet 2 is provided close to the perforated flow plate 10 (in this embodiment, it is opened so as to be in contact with the perforated flow plate 10), and the opening diameter is Because it is small,
It is possible to generate a strong air current along the surface of the perforated flow plate 10, and the amount of air discharged is reduced due to the small opening diameter. perforated plate 10
It becomes possible to carry all of the small amount of resin powder deposited on the surface of the airflow onto the airflow and discharge it.

In this way, in the initial stage of discharging the resin powder 13, most of the resin powder 13 can be removed in a short time by discharging a large amount of the resin powder from the large-diameter first powder outlet 1. When the powder level 14 drops and the amount of powder discharged from the first powder outlet 1 becomes small, the switch is switched to the second powder outlet 2 to create a strong air flow on the surface of the fluidized porous plate 10. The resin powder 13 in the fluid trough 4 is completely discharged by generating a small amount of residual resin powder 13.
This makes it possible to shorten the overall discharge time.

Since this discharge is performed with the fluid trough 4 sealed by the lid 3, even if the resin powder is finely atomized, it is possible to prevent it from scattering to the outside.

(Effects of the invention) As detailed above, according to the invention, since the fluidizing trough is sealed by the lid, it is possible to supply fluidizing air into the fluidizing trough to increase the pressure inside the fluidizing trough. can.

In this way, the pressure inside the fluidizing trough is increased, and two powder and granular material outlet ports are provided, and each of the powder and granule material outlet ports is provided with a damper.
By opening the damper at the powder outlet located at a height away from the perforated fluid plate, the pressurized air in the fluid trough flows out from the powder outlet, creating an airflow inside the fluid trough. Most of the resin powder flowing in the flow trough can be discharged in a short time by being carried by the airflow from the powder outlet.

Next, when the amount of resin powder in the fluid trough decreases and the amount of resin powder discharged from the powder outlet provided at a distance from the fluid perforated plate decreases, approach the perforated plate. By opening the damper at the powder outlet and closing the damper at the other powder outlet, which has a small opening diameter, a strong airflow can be generated along the surface of the fluidized porous plate. Although the amount of discharge is reduced due to the smaller opening diameter, all the resin particles that are flowing or accumulating on the perforated plate can be carried by this air flow and completely discharged.

In this way, by providing two powder discharge ports, the amount of resin powder floating in the flow trough can be increased in the initial stage of discharge, and most of the resin powder can be removed in a short time. The body is expelled, and then a strong airflow is generated along the surface of the fluidized porous plate.
It is now possible to completely discharge the small amount of resin powder accumulating on the surface of the fluid or fluid perforated plate, and the overall time for discharging the resin powder in the fluid trough can be shortened. can.

In addition, since the fluidizing trough is sealed with a lid, it is possible to prevent the atomized resin powder from scattering around, thereby improving the working environment.

Since the lid is removable, the resin coating can be applied normally by removing the lid.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a vertical cross-sectional view of a vibrating fluidized tank for resin coating in which the lid is fastened with bolts, and Figure 2 is a rotatable lid. FIG. 2 is a longitudinal cross-sectional view of a vibrating fluidized tank for resin coating that can be opened and closed in different directions. DESCRIPTION OF SYMBOLS 1... First powder/granular material outlet, 2... Second powder/granular material outlet, 3... Lid, 4... Fluid trough, 10...
...Perforated plate for flow.

Claims (1)

[Scope of utility model registration request] A resin coating in which a fluid trough 4 is provided above an air chamber 9 with a fluid perforated plate 10 in between, the air chamber 9 is elastically supported via a spring 8, and the fluid trough 4 is vibrated by a vibration device 6. In the vibrating fluidized tank for use, an opening hole is opened in the side surface of the fluidizing trough 4 to provide two powder and granule outlet ports 1 and 2, and dampers 11 and 12 are installed in each of the two powder and granule outlet ports 1 and 2. At the same time, one of the two powder outlet ports 1 and 2 is connected to the flow perforated plate 1.
A vibration for resin coating, characterized in that a lid 3 for sealing the fluid trough 4 is provided close to the opening 0 and has an opening diameter smaller than that of other powder or granular material outlet openings, and is provided so as to be openable and closable. Fluid tank.