JP2021115509A - Apparatus for feeding liquid material - Google Patents

Abstract

To provide an apparatus for feeding a liquid material capable of improving insulation effectiveness of a container, and realizing downsizing of an apparatus.SOLUTION: An apparatus 1 for feeding a liquid material includes: a container A capable of housing a liquid material and airtightly closing; a gas-introducing part 40 for feeding a gas for pressurizing in the container A; a material-delivering part 60 for delivering a liquid material in the container A outside; and a temperature-adjusting part 70 for adjusting a temperature in the container A. The container A is formed with two layers so that an outer shell part B has a closed space 15, 32 inside. The apparatus 1 for feeding a liquid material is further provided with a depressurized part 50 capable of depressurizing the closed space 15, 32.SELECTED DRAWING: Figure 1

Description

The present invention relates to a liquid material supply device capable of sending out a liquid material contained in a container to the outside.

As a conventional liquid material supply device, a pressurized type as described in Patent Document 1 and a device capable of further adjusting the temperature are known. In the case of a device that supplies liquid materials such as paints that require viscosity maintenance and adjustment by temperature control to the outside, in addition to having a temperature control part that can control the temperature inside the container, the internal temperature control can be done more efficiently. It is desirable to further provide a heat insulating structure for this purpose. As the heat insulating structure, it can be assumed that a heat insulating material such as urethane or glass wool is used.

Japanese Unexamined Patent Publication No. 2011-25104

However, since the heat insulating material as described above has a large volume, it is not suitable when it is desired to form a liquid material supply device having a small external dimension. Further, the above-mentioned heat insulating material has an insufficient heat insulating effect when used for cooling the paint, and there is a possibility that dew condensation may occur on the outside of the container by cooling the inside of the container.

The present invention has been proposed in consideration of such circumstances, and an object of the present invention is to provide a liquid material supply device capable of improving the heat insulating effect of a container and realizing miniaturization of the device. It is in.

In order to achieve the above object, the liquid material supply device of the present invention includes a container that can accommodate the liquid material and can be sealed, a gas introduction unit that supplies a pressurizing gas into the container, and a liquid material in the container. A liquid material supply device including a material delivery unit for sending the gas to the outside and a temperature control unit for adjusting the temperature inside the container. The container has two layers so that the outer portion has a closed space inside. It is formed and is characterized by further including a decompression portion that enables decompression of the closed space.

Since the liquid material supply device of the present invention has the above-described configuration, it is possible to improve the heat insulating effect of the container and to reduce the size of the device.

It is a schematic vertical sectional view of the liquid material supply apparatus which concerns on one Embodiment of this invention. (A) is a schematic exploded view of the liquid material supply device, (b) is a schematic bottom view of the material container, (c) is a schematic bottom view of the container body, and (d) is the liquid material supply device. It is a usage mode diagram schematically showing.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, a schematic basic configuration of the liquid material supply device 1 will be described.

The liquid material supply device 1 includes a container A that can accommodate the liquid material and can be sealed, a gas introduction unit 40 that supplies a pressurizing gas into the container A, and a material delivery unit 60 that sends the liquid material in the container A to the outside. And a temperature control unit 70 for adjusting the temperature inside the container A. The container A is formed of two layers so that the outer shell portion B has closed spaces 15 and 32 inside. Further, the liquid material supply device 1 is further provided with a decompression unit 50 capable of depressurizing the closed spaces 15 and 32 thereof.

That is, the liquid material supply device 1 has a structure in which the outer shell portion B of the container A has a jacket structure, and the closed spaces 15 and 32 thereof can be brought into a vacuum state with a pressure lower than the atmospheric pressure by the decompression portion 50. It is said that.

Next, the detailed configuration and usage mode of the liquid material supply device 1 will be described with reference to FIGS. 1 and 2. In the liquid material supply device 1 illustrated in FIGS. 1 and 2, the paint 3 (see FIGS. 2 (a) and 2 (d)), which is a liquid material, is coated on the surface 5 (FIG. 2 (d)) of a resin molded product or the like. (See) and used to paint the surface to be painted 5. This type of liquid material supply device 1 is used, for example, when applying a surface pattern to a resin molded product.

The container A includes a substantially cylindrical container body 10 having an upper opening and a substantially disk-shaped lid 30 for closing the opening 11 of the container body 10 (see FIGS. 1 and 2). Further, the liquid material supply device 1 further includes a substantially cylindrical material container 20 that can be taken in and out of the container A and can store the liquid material (see FIGS. 1 and 2A). ). The container body 10, the lid 30, and the material container 20 are made of stainless steel, but the present invention is not limited to this, and may be made of another metal material or synthetic resin material.

The container body 10 has a flange portion 12 on the outer wall surface 13b on the opening 11 side, and the lid 30 has a flange portion 31 on the outer peripheral surface. A packing is provided at the upper end of the container body 10 facing the lid 30. The container A further includes a fastener 37 for fixing both members in a state where the opening 11 of the container body 10 is closed with the lid 30. The lid 30 may be fitted into the opening 11 of the container body 10 and sealed without using the fastener 37.

The container body 10 is formed by processing a plate-like body, has a two-layer structure as a whole, and has an internal space 15 sandwiched between the two-layer plate-like bodies. The internal space 15 of the container body 10 is formed as a whole so as to communicate with each other between the peripheral wall portion 13 and the bottom portion 14. Further, the lid body 30 is also formed of a plate-like body, the plate-like body has a two-layer structure, and has an internal space 32 sandwiched between the two-layer plate-like bodies.

These internal spaces 15 and 32 are designated closed spaces 15 and 32. As a result, the outer shell B of the container A including the container body 10 and the lid 30 has a two-layer structure as a whole so as to have the closed spaces 15 and 32 inside. It is desirable that the thickness dimensions of the closed spaces 15 and 32 are 1 to 10 mm.

A pressure reducing port 51a projecting outward from the internal space 15 to the outside (side portion) is formed on the upper portion of the outer wall surface 13b of the container body 10. The lid 30 is also formed with a decompression port 52a projecting upward so as to communicate from the internal space 32 to the outside (upper part).

The container body 10 has attachment openings (inlet 17 and outlet 18) for air cooling pipes that are opened so as to penetrate the peripheral wall portion 13. Further, the lid 30 includes a gas introduction port 41 which is an opening for the gas introduction section 40, a material piping port 61 for attaching the material delivery pipe 62 of the material delivery section 60, and a relief valve opening 33 for the relief valve 35. ing. These openings are formed so as to penetrate the lid 30. The relief valve 35 is a valve for adjusting the pressure in the container A.

The material container 20 has a substantially cylindrical shape as described above, and can be stored in the container body 10 and can be taken in and out as shown in FIGS. 1 and 2 (a). The outer diameter of the material container 20 is slightly smaller than the inner diameter of the container body 10, but as shown in FIG. 1, when the material container 20 is stored in the container body 10, the air-cooling pipe 71 described later is described. It is desirable that the material container 20 has a piping gap 16 sufficient to be arranged spirally around the material container 20. Further, it is desirable that the height dimension of the material container 20 is smaller than the depth dimension of the container body 10.

If the material container 20 has an inner diameter of about 10 cm and a depth dimension of about 10 to 20 cm, it can accommodate a sufficient amount of paint 3 (see FIG. 2) for painting the surface of a resin molded product, for example. It can be easily taken in and out of the container body 10. Further, since the size of the container body 10 can be the same as the size of the material container 20, it is easy to carry the device and work with the device. In the case of the container A having such dimensions, the thickness of the internal spaces 15 and 32 of the outer shell portion B is preferably 4 to 6 mm in order to enhance the effect as the vacuum heat insulating structure.

Further, the inner bottom portion 21 of the material container 20 is formed like a mortar that is inclined downward from the peripheral side toward the center, and a support leg 22 extending downward from the inclined bottom 23 is formed on the outer bottom side of the back surface. Has been done. As shown in the bottom view of FIG. 2B, the support legs 22 have a cross shape in which two legs along the center line of the circle cross at the center, and the bottom surface 22a of the support legs 22 has a flat surface. It is said that.

Next, each of the gas introduction unit 40, the material delivery unit 60, the decompression unit 50, and the temperature control unit 70 will be described in detail.

The gas introduction unit 40 is configured to supply the pressurizing gas into the container A. The example of FIG. 1 has a gas introduction port 41 provided in the lid 30, a pressure gauge joint 42 connected to the gas introduction port 41, a pressure gauge 43, an on-off valve 44, and an air joint 45. It will be done. The gas introduction unit 40 is configured so that the gas from the pressurized gas source 47 can be supplied and stopped in the container A by opening and closing the on-off valve 44.

The material delivery unit 60 is configured to send the liquid material in the container A to the outside. The example of FIG. 1 includes a material piping port 61 provided in the lid 30 and a material delivery pipe 62 attached to the material piping port 61. The material delivery portion 60 of FIG. 1 further includes a hose 64 attached to the upper portion of the material delivery pipe 62 protruding toward the outer surface side of the lid 30 via a connector 63, and a discharge for painting arranged at the tip thereof. It is equipped with a nozzle 65.

As shown in FIG. 1, the material delivery pipe 62 is attached to the substantially center of the lid 30 and extends to the lower part of the inner space of the material container 20 in the substantially direct direction (the space slightly above the inner bottom portion 21). Arranged to extend. As described above, the material delivery pipe 62 has a length dimension such that the material intake port 62a at the lower end thereof is arranged in the lower part of the material container 20.

By arranging the material delivery pipe 62 as described above in the material container 20, the material intake port 62a is arranged in the center of the lower part of the material container 20, and the liquid material is placed in the material container 20. Even if only a small amount remains, the liquid material can be taken in efficiently.

The decompression unit 50 is configured so that the internal spaces 15 and 32 formed in the container A can be made into a vacuum space. In the example shown in FIG. 1, the container body 10 and the lid 30 are separated from each other, each has internal spaces 15 and 32, and the decompression unit 50 corresponding to the respective internal spaces 15 and 32 ( The main body side decompression unit 51 and the lid side decompression unit 52) are provided.

The main body side decompression unit 51 includes a decompression port 51a provided in the container main body 10, a vacuum gauge joint 51b, a vacuum gauge 51c, and an on-off valve 51d, and the decompression device 55 connected to the on-off valve 51d through a pipe. It is configured so that the internal space 15 can be evacuated. This internal space 15 can be a closed space 15 with the pressure gauge joint 51b and the on-off valve 51d attached, and if the on-off valve 51d is closed after being decompressed by the decompression device 55 to a vacuum state of about medium vacuum or low vacuum. , The vacuum state is maintained.

The lid-side decompression unit 52 also includes a decompression port 52a provided in the lid 30, a vacuum gauge joint 52b, a vacuum gauge 52c, and an on-off valve 52d, and the decompression device 55 connected to the on-off valve 52d through a pipe. It is configured so that the internal space 32 can be evacuated. This internal space 32 can also be a closed space 32 with the pressure gauge joint 52b and the on-off valve 52d attached, and if the on-off valve 52d is closed after being decompressed by the decompression device 55 to a vacuum state of about medium vacuum or low vacuum. , The vacuum state is maintained.

By evacuating both the internal space (closed space) 15 of the container body 10 and the internal space (closed space) 32 of the lid 30 in this way, the container A can be used as a container having a vacuum heat insulating structure. ..

The temperature control unit 70 is for cooling the inside of the container body 10, and in the present embodiment, the inside of the container body 10 is cooled by cooling air. Specifically, the piping gap 16 between the inner wall surface 13a of the container body 10 and the outer wall surface of the material container 20 so that the air cooling pipe 71 spirally winds around the outer wall surface of the material container 20. It is arranged in.

The air cooling pipe 71 is connected to an air cooling source that supplies cooling air via an inlet 17 of the air cooling pipe 71 and a joint 72 on the cooling air supply side, and an outlet 18 of the air cooling pipe 71 on the air discharge side. It is connected to an openable / closable discharge unit (discharge valve 77) via. The air cooling source is an air cooler 73, an on-off valve 75 is arranged on the upstream side thereof, and a hose 74 connected to the joint 72 is arranged on the downstream side.

By opening the on-off valve 75 on the cooling air supply side and the discharge valve 77 on the air discharge side, the cooling air flows through the air cooling pipe 71 arranged in a spiral shape, and the cooling air causes the inside of the container body 10 to flow. It is cooled. Therefore, by adjusting the supply amount of the cooling air, the inside of the container body 10 can be controlled to a predetermined temperature.

By configuring the liquid material supply device 1 as described above, the pressure gas from the pressurized gas source 47 is sent into the container A through the gas introduction unit 40, so that the temperature is controlled by the temperature control unit 70. The liquid material in the material container 20 can be sent out in a cooled state.

Therefore, if the paint 3 which is a liquid material is stored in the container A (material container 20), the paint 3 can be maintained at an appropriate temperature in the container A. Then, in the container A, the paint 3 can be stored for a long time while maintaining a low viscosity, and the paint 3 having a viscosity suitable for painting can be discharged to the surface to be painted 5.

In particular, in the present liquid material supply device 1, since substantially the entire outer shell portion B of the container A including the lid 30 has a vacuum heat insulating structure, the heat insulating efficiency can be improved, and the liquid material can be used regardless of the outside air temperature. It can be maintained at a generally constant temperature for a long period of time. Further, since the liquid material supply device 1 employs such a vacuum heat insulating structure, the entire size can be reduced as compared with the device using other heat insulating materials. Due to the miniaturization of such a device, it may be easier to use in the use of a device for painting while moving the liquid material supply device 1 on the surface to be painted 5. Further, since the vacuum heat insulating structure has better heat insulating efficiency than other heat insulating materials, dew condensation is less likely to occur on the outer surface of the container A.

If the internal spaces 15 and 32 of the container A are decompressed to create a vacuum state, the internal spaces 15 and 32 are the closed spaces 15 and 32. Can be maintained in a vacuum state. Therefore, the decompression device 55 does not have to be connected to the decompression unit 50 at all times, and when the vacuum heat insulating effect is weakened, the decompression device 55 may be reconnected to perform the decompression process. Of course, the decompression unit 50 may be configured so that the internal spaces 15 and 32 can be constantly depressurized to maintain the vacuum state.

As described above, the liquid material supply device 1 shown in the present embodiment has a configuration in which the decompression unit 50 has a function as a connection unit for connecting the decompression device 55, but includes the decompression device 55. It may be.

Further, since the liquid material supply device 1 shown in the present embodiment has a vacuum heat insulating structure, if the temperature of the liquid material (paint 3) in the container A does not change, the temperature control unit 70 may be used. It does not have to be operated all the time. For example, when the surface to be painted 5 is painted using the liquid material supply device 1, cooling may be stopped during the painting operation.

As described above, since the decompression treatment and the temperature control (cooling) do not have to be executed all the time, when the liquid material supply treatment such as painting is performed, the liquid material supply device 1 is used as a decompression device 55 or an air cooling source ( The air cooler 73) can be separated and put into a light state.

Further, since the container body 10 has a double container structure having a removable material container 20 inside, it is possible to easily fill and replenish the liquid material by taking out the material container 20. (See FIG. 2 (a)). Further, since the material container 20 includes the support legs 22, the material container 20 can be stably placed on a table or the like even when the material container 20 is taken out from the container body 10 as shown in FIG. 2 (a). It can be placed, which makes it easier to fill and replenish the paint 3.

In order to place the material container 20 in a stable state, instead of providing the support legs 22, the entire outer bottom surface of the material container 20 may be flat regardless of the shape of the mortar-like inner bottom 21. good. Further, the support legs 22 having other shapes may be provided. Furthermore, when using a dedicated installation stand that can install the material container 20 in a stable state, the outer bottom has an unstable bottom such as a curved shape that matches the shape of the mortar-like inner bottom 21. The material container 20 may be used.

Further, since the inner bottom portion 21 of the material container 20 is formed like a mortar, the material intake port 62a is arranged in the lower part of the material container 20 to efficiently dispose of the remaining liquid material. It can be sent to the outside.

Further, since the material delivery pipe 62 can be fixed to the lid 30, if the lid 30 to which the material delivery pipe 62 is attached is removed from the container body 10, the material delivery pipe 62 can be removed at the same time. can. Therefore, by removing the lid 30 from the container A, the container body 10 can be opened widely, which improves usability when filling materials. Further, as shown in FIG. 2A, the material container 20 can be easily removed.

Further, since the temperature control unit 70 used in the present embodiment is arranged so that the air cooling pipe 71 is wound around substantially the entire outer wall surface of the material container 20, the inside of the material container 20 is efficiently cooled. be able to. Since the air-cooling pipe 71 is arranged in the pipe gap 16 on the inner wall surface 13a side of the container body 10, there is no risk of getting in the way when the material container 20 is taken in and out. It is desirable that the air-cooling pipe 71 is arranged in a fixed position in the container body 10 so as not to shift.

The container A of the present embodiment has a double container structure in which the material container 20 is arranged in the container body 10, but the internal spaces 15 and 32 can be depressurized to create a vacuum state, and the container is formed by the temperature control unit 70. As long as the inside of A can be cooled, the structure may not have the material container 20.

Further, the container A may be provided with a thermometer for measuring the internal temperature. For example, the temperature inside the container A may be measured with a thermometer, and the temperature control unit 70 may be operated when a predetermined change occurs in the temperature. Further, when the temperature rises even though the temperature control unit 70 is operating, it may be determined that the degree of vacuum of the internal spaces 15 and 32 has changed, and the decompression operation may be performed.

In the above, the case where the liquid material is the paint 3 has been illustrated, but other liquid materials may be accommodated. Further, the liquid material is not limited to the one that needs to be cooled and stored, and can be applied to the one that needs to be heated.

As the temperature control unit 70, a water-cooled type may be adopted instead of the air-cooled type, and in the case where the liquid material that needs to be heated is housed in the container A, another temperature control structure such as a heater is adopted. do it.

1 Liquid material supply device 3 Paint (liquid material)
A Container B Outer part 10 Container body 11 Opening 15 Closed space (internal space)
20 Material container 21 Inner bottom 22 Support legs 30 Lid 32 Closed space (internal space)
40 Gas introduction part 50 Decompression part 51 Main body side decompression part 52 Lid side decompression part 55 Decompression device 60 Material delivery part 62 Material delivery piping 70 Temperature control part 71 Air cooling piping

Claims (5)

A container that can accommodate liquid materials and can be sealed, a gas introduction unit that supplies pressurizing gas into the container, a material delivery unit that sends the liquid material in the container to the outside, and a temperature that regulates the temperature inside the container. A liquid material supply device equipped with a tuning part,
The container is formed of two layers so that the outer shell portion has a closed space inside.
A liquid material supply device further comprising a decompression unit capable of decompressing the closed space. In claim 1,
The container is composed of a container body that opens upward and a lid that closes the opening of the container body.
The liquid material supply device is characterized in that the decompression unit is provided in each of the container body and the lid body. In claim 1 or 2,
A liquid material supply device, further comprising a material container that can be taken in and out of the container and can accommodate the liquid material. In any one of claims 1 to 3,
A liquid material supply device characterized in that the temperature control portion is composed of an air cooling pipe arranged on the inner wall surface side of the container. In any one of claims 1 to 4,
The material delivery unit has a material delivery pipe, and the material delivery pipe can be fixed to the lid body and can be arranged so as to reach the lower part of the container. Device.

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