JP2002177754A - Lacquer refining equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide lacquer refining equipment which is capable of easily refining a small amount of lacquer, facilitating setting of refining conditions and refining the lacquer of arbitrary quality. SOLUTION: This lacquer refining equipment has a vessel for containing a lacquer liquid, a supporting base for supporting this vessel, stirring vanes for stirring the lacquer liquid in the vessel, a shaft member for transmitting rotating force to the stirring vanes, a driving means for rotationally driving the shaft member from an aperture side of the vessel and a driving means holding mechanism for holding the driving means. The shaft member forms a projecting part of a prescribed length through the stirring vanes and a recessed part corresponding to this projecting part is formed at the inside base surface of the vessel. The supporting base of the vessel is provided with a movable mechanism for making the vessel movable in a vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lacquer refining apparatus, and more particularly to a lacquer refining apparatus for refining a small amount of raw lacquer.

[0002]

2. Description of the Related Art Conventionally, lacquer sap, which is a sap collected from a lacquer tree, is used as "purified raw lacquer" after removing scrapes and filtering to remove contaminants, or by heat dehydration. Used as "dehydrated purified lacquer". In this case, the former “purified raw lacquer” is mainly used as a sliding lacquer, a base paint or an adhesive, and the latter “dehydrated purified lacquer” is used as a paint such as a middle coat or a top coat.
And most of the lacquer is used as the latter "dehydrated purified lacquer", but in order to improve the leveling property in painting and impart gloss of the coating film, "Nayashi" is a traditional refining method,
A purification process called "kurome" is performed. Hereinafter, the main contents of “Nayashi” and “Kurome” in the refining process of the lacquer liquid will be described.

[0003] "Nayashi" is an operation in which raw lacquer is put in a shallow wooden container and agitated so as to slide it. By this "Nayashi", the components of the lacquer are dispersed uniformly,
The emulsified particles are fined. Therefore, the lacquer liquid is softened and softened, that is, the flowability is improved, and the gloss of the coating film is increased. However, if the rubbing is too strong during the stirring, the rubber containing water swells and thickens, resulting in poor quality lacquer.

[0004] Following "Nayashi", "Kurome" work is performed. "Kurome" is an operation of suspending a charcoal fire, an electric heater, an infrared lamp, or the like on the same container, stirring the mixture to increase its surface area, and heating and dehydrating the lacquer liquid. By this "kurome", the water of the lacquer liquor evaporates slowly and becomes gradually transparent. Then, the operation is completed while leaving about 3% of water.

[0005] By doing so, the above-mentioned lacquer liquid is a water-in-oil emulsion composed of the main components urushiol and gum (polysaccharide), nitrogen-containing substance (glycoprotein), a small amount of laccase enzyme and water. Is polymerized by oxidation of urushiol by the laccase enzyme. Then, lacquer for painting having excellent viscosity, drying property, glossiness and leveling property is refined. These refined lacquers are painted on wooden bowls and the like to produce lacquerware.

[0006] Conventionally, the refining of the lacquer has been performed by an apparatus shown in FIG. This lacquer refining apparatus includes a circular wooden container 101 for storing lacquer liquid, a support table 102 for supporting the container 101, a stirring blade 103 rotating around the center of the container 101 as an axis, and a rotational force applied to the stirring blade 103. A shaft member 104 for transmitting, and the shaft member 104
Driving means 105 for rotating and driving the container 101 from below,
A heat source 106 for heating and dehydrating the lacquer liquid is provided at the upper part.

This wooden container 101 has, for example, a diameter of 1
Meters, and the container 101 is charged with about 20 kilograms of raw lacquer. The raw lacquer is kneaded and dehydrated by the stirring blades 103 rotated by the driving means 105, and the lacquer is purified.

[0008] By using such an apparatus, the axis of the stirring blade is short, and the blade is less likely to be shaken.
The lacquer liquor can be purified almost uniformly, and a large amount of lacquer liquor can be purified at once without requiring much labor.

[0009]

However, the above-described conventional technique has the following disadvantages. First,
In the case of purifying a small amount of lacquer liquor, it is difficult to purify using the above-described apparatus, and there is a disadvantage that the purification (hand-rolling) must be performed manually.

[0010] The case where a small amount of refining is required as described above is, for example, a case in which an art craft is produced or repaired personally, or the refining conditions for obtaining a high-quality refined lacquer are grasped. This is a case where a test is repeatedly performed in order to perform the test. In such a case, it is troublesome to operate and refine a large apparatus each time, and in many cases, individuals do not own the apparatus. On the other hand, when purifying by hand, purification requires a long time, and it is not always possible to purify under the same conditions every time.

Second, even if the above device is downsized,
Since the stirring blade is driven from the lower part, the container for the lacquer liquid and the driving device are integrated, and it is difficult to take out the purified lacquer and to clean the container. For example, when performing repetitive purification tests,
Each time the refined lacquer is taken out of the container, it is time-consuming to remove the blades and the like from the driving device and take out the lacquer in the container each time, and it is difficult to repeatedly purify.

[0012]

SUMMARY OF THE INVENTION The object of the present invention is to improve the disadvantages of the prior art, and in particular, to purify a small amount of lacquer liquor easily and to purify lacquer of any quality by easily changing the refining conditions. It is an object of the present invention to provide a lacquer refining apparatus which can perform lacquer liquid easily.

[0013]

Therefore, in the present invention, a container for storing the lacquer solution, a support stand for supporting the container, a stirring blade for stirring the lacquer solution in the container, and a rotational force applied to the stirring blade. A shaft member for transmitting the shaft member; a driving unit for driving the shaft member to rotate from the opening side of the container; and a driving unit holding mechanism for holding the driving unit. The shaft member penetrates the stirring blade and has a predetermined length. And a concave portion corresponding to the projecting portion is formed on the inner bottom surface of the container, and on the support base of the container,
A configuration is provided in which a movable mechanism for vertically moving the container is provided (claim 1).

With such a configuration, the upper end of the shaft member is energized by the driving means from the driving means, and the lower end of the shaft member projects from the stirring blade to form a projection of the shaft member. The projection fits into the recess of the container. Therefore, since the shaft member is supported at the upper end and the lower end, "shake" during rotation of the shaft member is suppressed. As a result, the stirring blade engaged with the shaft member is driven to rotate stably,
The gap between the container and the stirring blade can be kept constant, the contact therebetween can be suppressed, and the lacquer liquid can be efficiently stirred. Further, the protrusion of the shaft member projects from the lower portion of the stirring blade by a predetermined length, fits into a recess of a predetermined length formed on the inner bottom surface of the container, and further includes the container on the support base. By moving up and down by the movable mechanism, the gap between the stirring blade and the inner bottom surface of the container can be adjusted to a predetermined distance. At this time, since the protruding portion of the shaft member has a predetermined length, the protruding portion remains fitted in the concave portion of the container within the range of this length. Therefore, it is possible to adjust the gap between the stirring blade and the inner bottom surface of the container while maintaining the stability of the rotational drive.
As a result, it is possible to easily change the stirring conditions, mainly the rubbing conditions by the stirring blades and the container, and to easily perform a repeated test for grasping the optimal purification conditions. Further, by lowering the container by operating the movable mechanism and separating the container from the stirring blade, the stirring means including the stirring blade can be easily removed from the container containing the lacquer. Therefore, since the container is in an independent state, the lacquer in the container can be easily taken out. As a result, the lacquer can be easily taken in and out, and the convenience of handling can be improved, such as repeated stirring and cleaning of the device later.

Further, the inner bottom surface of the container is formed in a circular shape, the center of the inner bottom surface is set as the rotation center of the stirring blade, and the stirring blade has a predetermined gap on the inner wall surface of the container. It is desirable that the stirring blade be formed to have a length and that the end of the stirring blade be formed in accordance with the shape of the inner wall surface of the container. At this time, it is more preferable that the inner wall surface of the container is formed in a tapered shape such that the spatial sectional area of the opening of the container is larger than the area of the inner bottom surface of the container.

Thus, since the end of the stirring blade always rotates with a predetermined gap on the inner wall surface of the circular container, the lacquer liquid is stirred such that the lacquer liquid is slid into the gap. Therefore, the sliding area increases, and the efficiency of stirring the lacquer liquid can be improved. Also, when the stirring blade rotates, the lacquer liquid pushed out from the gap between the stirring blade and the inner bottom surface of the container enters the gap on the inner wall surface of the container, and is further pushed out above the inner wall surface of the container, and Falls on the inner bottom surface of the container after passing through the stirring blade. Therefore, the lacquer liquid near the outer periphery of the container is stirred without remaining near the outer periphery. As a result, the components of the lacquer liquid can be uniformly dispersed, and the accuracy of stirring can be improved. Further, when the inner wall surface of the container is tapered, the area slid on the inner wall surface of the container is increased, and the stirring efficiency can be further improved. Also, since the shape of the end portion of the stirring blade is shaped according to the shape of the container, when adjusting the gap on the inner bottom surface of the container, for example, when moving the stirring blade upward to increase the gap on the bottom surface In addition, since the gap on the inner wall surface also becomes large, the gap on the inner bottom surface can always correspond to the gap on the bottom surface, and stirring can be performed under almost the same conditions regardless of the position of the container. In addition, since the opening of the container is widened, operations such as heating from the upper portion of the container and observing or measuring the state of the lacquer liquid can be easily performed.

Further, the stirring blade may be locked to the shaft member via locking means which can move up and down along the shaft member. Thus, by operating the locking means of the shaft member and moving the blade member along the shaft member, the length of the previously provided shaft member protruding portion from the stirring blade can be arbitrarily adjusted. . Therefore, more stirring conditions can be set, and a purified lacquer of any property can be obtained.

It is preferable that the container is formed of a metal member and the stirring blade is formed of a non-metal member. Further, it is desirable that the stirring blade be detachably engaged with the shaft member via an engaging means.

Thus, since the relatively small container is formed of a metal member (for example, aluminum), the container is easier to process than a wooden trough, and the cost of the apparatus can be reduced. Then, a non-metal (for example, wooden) stirring blade rotates in the metal container. Therefore, the generation of abrasion metal powder generated when the container and the stirring blade are made of metal can be suppressed by using a wooden stirring blade. As a result, it is possible to suppress the metal powder from being mixed into the lacquer liquid while reducing the cost of the apparatus, and to suppress a decrease in the quality of the purified lacquer. Further, by operating the engaging means for engaging the stirring blade with the shaft member, the stirring blade can be replaced. Therefore, even when the stirring blade is worn, it can be easily replaced.

Further, a heating means for heating the lacquer liquid in the container from above may be provided at a predetermined position of the driving means holding mechanism (claim 7). Thereby, the lacquer liquid in the container can be heated in accordance with the properties of the lacquer to be purified, and desired refining conditions can be easily set.

Further, it is desirable to provide a jacket between the container and the support base, the jacket including the container and having an open top. With this, when a heating medium such as heated water is put into the jacket, the heating medium heats the outer periphery of the container,
The heat is transferred to the lacquer liquid inside the container. Therefore, the lacquer liquid can be efficiently heated, and desired lacquer refining conditions can be easily set.

[0022]

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

<Lacquer Refining Method> The lacquer refining apparatus of the present invention purifies a lacquer liquid scraped from a lacquer tree and converts the lacquer liquid into a paint. First, the method of purifying lacquer will be described.

[0024] Purification of lacquer mainly comprises the steps of "Nayashi" and "Kurome". “Nayashi” refers to the operation of mixing raw lacquer (lacquer as scraped from lacquer wood) into a container and stirring it. Thereby, the particles in which the components of the lacquer liquid are uniformly dispersed and emulsified are finely divided.
In addition, “kurome” means an operation of suspending an electric heater, an infrared lamp, or the like on a container containing a lacquer solution and stirring the lacquer solution so as to increase the surface area of the lacquer solution. Thereby, the water in the lacquer liquor evaporates slowly and then becomes transparent. Then, the operation is completed while leaving about 3% of water. That is,
Heat dehydration is performed.

By doing so, a water-in-oil type emulsion (emulsion: liquid) composed of urushiol, gum (polysaccharide), nitrogen-containing substance (glycoprotein), a small amount of laccase enzyme and water. Urushiol, which is a dispersion in which other liquids are dispersed in a colloidal fine size (emulsion), is obtained by oxidizing urushiol by laccase enzyme and polymerizing. Are atomized. And, by this atomization, the durability of the lacquer liquor is improved, the flowability is improved, and the gloss of the coating film comes out.

<Overall Configuration of Apparatus> FIG. 1 shows a lacquer refining apparatus for performing the lacquer refining process as described above. FIG. 1 is a partial cross-sectional view showing the configuration of the first embodiment of the device.

The lacquer refining apparatus shown in FIG. 1 has a container 1 for holding a lacquer liquid (not shown) and a support 2 for supporting the container.
A stirring blade 3 for stirring the lacquer liquid in the container 2, a shaft member 4 for transmitting a rotational force to the stirring blade 3, and a driving means 5 for rotating the shaft member 4 from the opening side of the container 1. And a driving means holding mechanism 6 for holding the driving means 5. The shaft member 4 penetrates through the stirring blade 3 to form a protrusion 41 having a predetermined length, and the recess 11 corresponding to the protrusion 41 is formed on the inner bottom surface of the container. A movable mechanism 2 for vertically moving the container 1
1 is provided.

Hereinafter, this will be described in detail. Here, FIG.
It is a figure which shows the container 1, FIG.2 (a) is a top view of the container 1,
FIG. 2B is a sectional side view of the container 1. FIG. 3 is a diagram showing a configuration of the stirring blade 3 and the shaft member 4, and FIG.
Is a front view, and FIG. 3B is a side view.

<Container> The container 1 is a container having an open upper portion and a side wall having a predetermined height and having a U-shaped cross section, in which liquid can be stored. The container 1 has a flat inner bottom surface and a circular shape (see FIGS. 2A and 2B).
The inner wall surface of the container 1 is formed in a tapered shape such that the space cross-sectional area of the opening of the container 1 is larger than the area of the inner bottom surface of the container. That is, the side wall of the container 1 is formed so as to gradually spread outside the container 1 toward the opening, and has a curved surface shape. However, the shape of the container 1 is not limited to a circular shape or a tapered shape.

The size of the container 1 varies depending on the amount of the lacquer liquid to be purified. For example, in a refining process of 5 g or less of raw lacquer, the diameter of the inner bottom surface is 60 to 80 mm and the diameter of the opening is 80 to 100 mm. , Depth 40-60mm, thickness 4 ~
For the purification treatment of 115g container 1 and 5g-20g of raw lacquer, the inner bottom diameter is 80-110mm, the opening diameter is 100-140mm, the depth is 40-60mm, and the thickness is 4 ~
In the case of a 15 mm container 1 and a 10 g to 50 g raw lacquer refining treatment, the inner bottom diameter is 1100 to 1500 mm, the opening diameter is 1400 to 2000 mm, and the depth is 40 to 80 mm.
When the container 1 having a thickness of 4 to 20 mm is used, it can be easily used as a relatively small amount of lacquer refining equipment. However, the size of the container 1 is not limited to the size described above.

A concave portion 11 having a predetermined depth is formed at the center of the inner bottom surface of the container 1. The recess 11 is formed by being dug in a direction perpendicular to the inner bottom surface of the container 1, that is, downward in FIG. 1 (see FIGS. 2A and 2B). The depth of the recess 11 is
For example, it is 7 mm (specifically, a columnar portion is 5 m
m, the conical part is 2 mm). The end of the shaft member 4 fits into the recess 11 as described later. However, the depth of the recess 11 is not limited to the above length. Moreover, since the lacquer liquid is put in the container 1, the concave portion 11 does not penetrate the container 1.

The container 1 is made of aluminum. By manufacturing the container 1 from aluminum, the lacquer liquor and the aluminum do not react with each other, so that the lacquer liquor can be suppressed from being colored in black, and further, the processing can be facilitated.
It is possible to improve the durability and reduce the price.

However, the material of the container 1 is not limited to aluminum, but other materials have the following disadvantages. For example, iron reacts with lacquer liquor and causes a problem that the lacquer liquor is colored black. In this case, if the stirring blade 3 described later is made of iron or the like, the metal container 1 and the stirring blade 3 come into contact with each other, and this contact generates wear metal powder, which further promotes discoloration of the lacquer liquid. Will be done. Further, although the container 1 of the conventional large lacquer refining apparatus is made of wood, if the container 1 of the small lacquer refining apparatus of the present embodiment is made of wood, the generation of the above-mentioned abraded metal powder can be prevented. Manufacturing is not easy and costly. In addition, when a case where a refining test is repeatedly performed is considered, a durability problem occurs.

Furthermore, the outer bottom surface of the container 1, that is,
Four screw holes are formed in a contact surface with the support 2 described later (see FIGS. 1 and 2). A screw is inserted into the screw hole from below, and the container 1 and the support 2 are fixed to each other as described later.

<Support Table> The support table 2 supports the container 1 from below, and the upper part thereof has a flat plate shape. The support 2 is integrated with the container 1 as described above (see FIG. 1). That is, a through-hole corresponding to the screw hole of the container 1 is formed on the flat upper surface of the support 2, and a screw is inserted through the through-hole and the screw hole of the container 1, and the container 1 is It is fixed to 2. However, the support base 2 and the container 1 are not limited to being integrally connected by screws. A fixing mechanism other than the screw for fixing the container 1 may be provided on the upper surface of the support 2, and the container 1 may be fixed on the upper surface of the support 2. That is, the container 1 may be detachable from the support 2. Further, the container 1 may be fixed to the support 2 by welding.

Further, the support 2 is provided with a movable mechanism 21 so that the height of the support 2 fluctuates, that is, the position of the container 1 on the upper surface moves up and down. (See FIG. 1).

The movable mechanism 21 is formed by a screw jack. This screw jack has the same operation and effect as a general screw jack. Therefore,
The movable mechanism 21 includes a handle 21a on the left side of FIG.
Is rotated in the direction of the arrow, whereby the handle 21
a, the screw shaft rotates, and the arm 21c shown in FIG.
The distance of the shaft 21d that connects the
The interval of c narrows or opens. Thereby, the height of the support 2 can be adjusted.

By adjusting as described above, it is possible to adjust the gap between the inner surface of the container 1 and the stirring blade 3 described later, and set any desired stirring conditions. This will be described later. Further, even when the position of the stirring blade 3 is fixed, the movable mechanism 21 is operated to lower the position of the container 1 so that the stirring blade 3 is located above the opening of the container 1. The container 1 can be easily taken out. That is, the stirring blade 3 and the container 1 can be isolated. Therefore, it is easy to take out the lacquer liquid in the container 1 or to clean the container 1.

Here, the movable mechanism 21 is not limited to a screw jack. What is necessary is just to be able to move up and down the position of the container 1 on the upper surface of the movable mechanism 21.
Therefore, it is not limited to mechanical operation, but may be electrically operated. However, since the apparatus is intended for refining a small amount of lacquer liquid, the container 1 supported on the upper part is relatively small. Therefore, the structure of the movable mechanism 21 itself is relatively simple, and it is desirable that the apparatus can be formed small.

<Stirring Blade> The stirring blade 3 is a plate-shaped member having a predetermined thickness (see FIGS. 3A and 3B).
The stirring blade 3 is disposed with its both ends facing the inner wall surface of the container 1 described above, with one thickness portion in the length direction facing the inner bottom surface of the container 1 and the other facing the opening. Therefore, the stirring blade 3 is located through the center of the inner bottom surface of the container 1 which is circular (see FIG. 2A).

One thickness portion of the stirring blade 3 facing the inner bottom surface of the container 1 is a container 1 having a circular length.
It is formed slightly shorter than the diameter of the inner bottom surface. And
The other thickness portion located on the opening side of the container 1 is formed to be longer than the one thickness portion. Specifically, when the stirring blade 3 is located on the inner bottom surface of the container 1, it is formed to be slightly shorter than the diameter of the container 1 at that position. Therefore, as shown in FIG. 3A, the stirring blade 3 as a plate-like member has a trapezoidal shape corresponding to the shape of the container 1.

Further, one thickness portion of the stirring blade 3, that is, a surface facing the inner bottom surface of the container 1, is flat like the inner bottom surface. And the both ends of the stirring blade 3, ie, the surface facing the inner wall surface of the container 1, are curved surfaces corresponding to the inner wall surface. Therefore, while the inner wall surface of the container 1 is concave, both ends of the stirring blade 3 are convex curved surfaces.

Further, a through hole through which the shaft member 4 is inserted is formed in the center of the stirring blade 3. This through hole corresponds to the above-described concave portion formed at the center of the container 1. Therefore, the through-hole passes through the center of the plate-shaped stirring blade 3 in the length direction perpendicularly to the length direction.

The stirring blade 3 is made of wood. Even if the above-described container 1 is made of metal by making the stirring blade 3 a wooden material, the contact with the container 1 does not cause the stirring blade 3 to scrape the container 1. Generation can be prevented. Therefore, it is possible to suppress the deterioration of the quality of the purified lacquer due to the metal powder. However, the stirring blade 3 is not limited to the above shape, and is not limited to wooden. For example, it may be a single blade, or may be formed of a material other than wood.

<Shaft Member> The shaft member 4 is a shaft made of stainless steel. However, the shaft member 4 is not limited to stainless steel. One end of the shaft member 4 is connected to the driving unit 5, and a rotational force is applied from the driving unit 5.
The stirring blade 3 is locked to the other end via locking means, and transmits the rotational force from the driving means 5. At this time, the other end is inserted into a through hole formed in the center of the stirring blade 3, and the tip of the other end protrudes from the stirring blade 3 by a predetermined length (projection 41, FIG. 3).
(A)). As described above, the projecting portion 41 fits into the concave portion 11 formed at the center of the container 1. Therefore, the protrusion 11 protrudes from the stirring blade 3 corresponding to the depth of the recess 11.

As a result, the upper end of the shaft member 4 is supported by the driving means 5 and the other end of the shaft member 4 is supported by the concave portion 11 of the container 1, so that the shaft member 4 rotates without being shaken when rotating.
Therefore, the rotation of the stirring blade 3 locked on the shaft member 4 is also stabilized. In addition, since the protruding portion 41 has a predetermined length and the supporting table 2 is provided with the movable mechanism 21, the gap between the stirring blade 3 and the container 1 can be easily adjusted. The details will be described later.

Here, the stirring blade 3 is locked to the shaft member 4 via locking means 7 so as to be vertically movable along the shaft member 4. That is, by adjusting the position of the stirring blade 3, it is possible to change the length of the protruding portion 41 of the shaft member 4 described above. Further, the stirring blade 3 is detachably engaged with the shaft member 4 via the engaging means 8. That is, the stirring blade 3 rotates together with the shaft member 4, is removable from the shaft member 4, and can be replaced. In the present embodiment, the locking means 7 and the engaging means 8 are integrally formed. This integrally formed locking means 7 and engaging means 8
As shown in FIGS. 3 (a) and 3 (b), has a locking means 7 at the upper part and an engaging means 8 at the lower part.

The locking means 7 is a rectangular parallelepiped, and has a central portion formed with a through hole through which the shaft member 4 is inserted. A locking screw hole 71 penetrating perpendicularly to the through hole is formed on a predetermined surface of the engaging means 7 (see FIG. 3B). A screw 72 is inserted into the locking screw hole 71 from the surface where the locking screw hole 71 is formed. The distal end of the screw 72 penetrates through the locking screw hole 71 and abuts on the shaft member 4, and is further pressed to lock the locking means 7 at a predetermined position of the shaft member 4.

The engaging means 7 has one surface on which the through hole is formed, that is, the lower surface in FIG. Then, the thickness of the bottom surface of the engaging means 7, that is, the length in the thickness direction of the abutting portion with the stirring blade 3 is formed longer than the thickness of the stirring blade 3 (FIG. 3B). reference). An engaging member 8 is integrally fixed to the long bottom portion, that is, both portions that protrude from the stirring blade 3 when the bottom surface is in contact with the stirring blade 3.

The engaging member 8 is composed of two plate members sandwiching the stirring blade 3 (see FIGS. 3A and 3B). The engaging member 8 is provided with a pair of engaging bolt holes 81 at two locations for the shaft member 4. In addition, corresponding to the engagement bolt holes 81, the stirring blade 3 is also provided with the blade side bolt holes 3.
1 is formed. A bolt 82 made of stainless steel is inserted into these bolt holes 81, and the bolt 82 is fixed by a nut 83 made of stainless steel. Therefore, the stirring blade 3 is sandwiched between the engaging members 8 and the bolts 82
It is fixed by a nut 83.

Accordingly, as described above, the locking means 7 and the engaging means 8 formed integrally are not limited to those shown in FIGS. 3 (a) and 3 (b).
As seen from the front, it is formed in an inverted T-shape when viewed from the front, and is formed in a U-shape having an opening on the lower side when viewed from the side. The stirring blade 3 is fitted into the opening, and is engaged by a bolt 82 and a nut 83. Then, the shaft member 4 is inserted through the integral locking member 7 and the engaging member 8 and the stirring blade 3, and stainless steel is inserted into a locking screw hole 71 formed in the upper locking member 7 at an arbitrary position. The shaft member 4 is inserted by inserting a screw 72 made of
The stirring blade 3 can be locked at an arbitrary position.

By doing so, the stirring blade 3 can be moved up and down along the shaft member 4. Therefore, the protruding length of the projecting portion 41 which is the tip of the shaft member 4 and protrudes from the stirring blade 3. Can be adjusted. Therefore,
The gap between the stirring blade 3 and the inner bottom surface of the container 1 can be adjusted without being limited by the depth of the concave portion 11 formed in the container 1 described above. In addition, the stirring blade 3 can be easily removed from the shaft member 4, and the shaft member 4 can be easily maintained or replaced. Furthermore, since the engaging member 8 is formed of a plate-like member, the rigidity of the stirring blade 3 can be increased, and the breakage of the stirring blade 3 can be suppressed.

Here, the locking means 7 and the engaging means 8 are not limited to the above shapes. Further, in the above embodiment, the case where the locking means 7 and the engaging means 8 are integrally formed is exemplified, but the invention is not limited to this. Locking means 7
And the engagement means 8 may be welded or mechanically coupled. Further, only one of the locking means 7 and the engaging means 8 may be provided.

<Driving Means> The driving means 5 is formed by a motor having a predetermined torque, and urges the shaft member 4 with a rotational force. That is, the driving means 5 rotates the stirring blade 3 provided at the end of the shaft member 4. This driving means 5 is specifically for high viscosity, that is, one capable of outputting a high torque.
It is desirable that the torque value be easily adjusted to a predetermined value.
Further, it is more desirable that the driving means 5 has a forward / reverse rotation function.

<Drive Means Holding Mechanism> Drive Means Holding Mechanism 6
Is a mechanism for holding the driving means 5 above the container 1. The stand is not limited as long as it can hold the driving means 5. The driving means holding mechanism 6
In addition to a thermometer (not shown), an infrared lamp (not shown) as a heating means may be hung. At this time,
The infrared lamp is hung from the upper part of the container 1 at a position where the lacquer liquid is heated, and the thermometer is adjusted to a height such that the temperature measurement unit is immersed in the lacquer liquid in the container 1 and hung.

Thus, the lacquer liquor can be heated from above as required, and its temperature can be measured with a thermometer. Therefore, the lacquer liquid in the container 1 can be easily heated, the temperature of the lacquer liquid can be easily adjusted, and desired lacquer refining conditions can be set.

As described above, with the provision of the heating means, a thermometer for measuring the temperature inside the container 1 is built in the container 1 (not shown), and a display for displaying the measured temperature is provided. A part (not shown) may be provided on the outer surface of the container 1. Further, the display unit may be a digital display using liquid crystal. This makes it easier for the user of the device to read the temperature.

Next, the operation of this embodiment will be described with reference to FIG.

First, the height of the support base 2 is reduced by rotating the handle 21a of the movable mechanism 21 of the support base 2 in a predetermined direction. Then, the stirring blade 3 is set at the opening of the container 1 integrally formed with the support 2. At this time, the projecting portion 41 of the shaft member 4 projecting below the stirring blade 3 is
The container 1 is located just above the concave portion 11 on the inner bottom surface.

Subsequently, the handle 21a of the movable mechanism 21 is turned to raise the height of the support 2 and move the container 1 upward. At this time, the projection 41 and the recess 11 are securely fitted. And further, the movable mechanism 21
By rotating the handle 21a, the gap between the bottom surface of the stirring blade 3 and the inner bottom surface of the container 1 is finely adjusted to correspond to a desired stirring condition.

Subsequently, the lacquer liquid is put into the container 1 and the driving means 5 is rotated at a predetermined rotation speed. Further, the rotation speed is changed as necessary.

In this manner, the stirring blade 3 rotates and the lacquer liquid is kneaded in the container 1. And then,
The lacquer liquid is slid into the gap between the stirring blade 3 and the inner bottom surface of the container 1, and the emulsified particles of the lacquer liquid are finely dispersed. further,
Since the lacquer liquid is also dispersed on the inner wall surface of the container 1 by the stirring blade 3, the purification process can be performed efficiently. Thereby, the flowability of the lacquer liquid is improved, and the gloss of the coating film is also improved.

The upper end of the shaft member 4 is connected to the driving means 5.
Since the lower end is supported by the recess 11, it rotates without shaking. Therefore, since the stirring blade 3 rotates without being shaken, it is possible to suppress the stirring blade 3 from coming into contact with the container 1, and to suppress wear and damage of the stirring blade 3 and the container 1, and to reduce the wear thereof. Generation of powder can also be suppressed. For this reason, it is possible to prevent impurities from being mixed into the purified lacquer.

Subsequently, when lacquer is further purified under different refining conditions, first, the handle 21a is rotated to lower the position of the container 1, and the container 1 is taken out from directly below the stirring blade 3. Then, after taking out the purified lacquer inside the container 1 and cleaning the container 1, the container 1 is set on the stirring blade 3 again as described above. At this time, the gap between the stirring blade 3 and the inner bottom surface of the vessel 1 is adjusted in order to set a purification condition different from the last time. This can be easily performed by turning the handle 21a of the movable mechanism 21. Then, the lacquer liquid is put into the container 1 and stirred in the same manner as described above.

In this way, since the stirring conditions of the lacquer solution can be set only by a simple operation of turning the handle 21a, it is easy to repeatedly perform the refining test. For this reason, a test can be performed by repeatedly changing the refining conditions for a small amount of lacquer liquid in order to grasp the optimal refining conditions for obtaining high-quality purified lacquer. Thereby, it is possible to obtain desired quality (viscosity, dryness, glossiness, leveling property) in production and repair and storage of arts and crafts.

The projection 41 is provided with a predetermined length, and the recess 11 into which the projection 41 is fitted is also formed at a predetermined depth, so that the gap between the stirring blade 3 and the inner bottom surface of the vessel 1 is slightly widened. Even if it does, the fitting state between the protruding portion 41 and the concave portion 11 is maintained. Therefore, since the stirring blade 3 rotates stably, the same effect as described above can be obtained.

Further, as the gap between the stirring blade 3 and the inner bottom surface of the container 1 is adjusted, the gap between both ends of the stirring blade 3 and the inner wall surface of the container 1 is also changed. Therefore, since the lacquer liquid is dispersed also on the inner wall surface of the container 1, the same effect as described above can be obtained.

Thereafter, if the purification conditions are to be further changed and the gap between the stirring blade 3 and the container 1 is to be longer than the length of the projection 41, the screw 72 as the locking means 7 is loosened. The stirring blade 3 is moved upward, and a screw 72 is tightened at a predetermined position to lock the stirring blade 3 on the shaft member 4.

In this case, when the position of the container 1 is lowered too much, the protruding portion 41 comes off the concave portion 11 and the stirring blade 3
Can be prevented from becoming unstable. That is, since the stirring blade 3 is moved upward while the protruding portion 41 is fitted in the concave portion 11, the two-point support state of the shaft member 4 can be maintained, and the rotation stability of the stirring blade 3 can be maintained. it can.

In the case where the stirring blade 3 is worn or damaged due to repeated purification, the bolt 82 and the nut 83 of the engaging means 8 are loosened and the stirring blade 3 is removed. Replace with Therefore, replacement of the stirring blade 3 can be easily performed.

Here, the stirring blades 3 are arranged as shown in FIG.
The shape is not limited to the shape shown in FIG. Another example of the stirring blade 3 will be described with reference to FIG.

The stirring blade 30 shown in FIG. 4 is engaged above the lower end of the shaft member 4. At this time, the stirring blade 30 is engaged by the engaging means 80 engaging with the shaft member 4. The engagement means 80 is formed of two rectangular plate-like members welded to the shaft member 4 with the shaft member 4 interposed therebetween. The engaging means 8 is provided with four engaging bolt holes for one plate-like member, and the other opposing plate-like member also has an engaging bolt hole.
Therefore, blade-side bolt holes corresponding to the engagement bolt holes are formed in the stirring blade 30, and the stirring blade 30 is engaged with the shaft member 4 by inserting bolts into these holes.

The stirring blade 30 which engages with the engaging member 80 is made of wood and is divided into two pieces. That is,
The stirring blade 3 shown in FIG. 3A has a shape divided at the center. Even in this case, since the place where the stirring blade 30 is likely to come into contact with the container 1 is made of wood as described above,
Even if the stirring blade 30 comes into contact with the container 1, the generation of wear metal powder is suppressed. In addition, when the stirring blade 30 is worn out or damaged, the blade can be replaced one by one, and the apparatus maintenance cost can be reduced.

Further, the engaging means 80 for engaging the stirring blade 30 is fixed to the shaft member 4 by welding.
Rotation of the stirring blade 30 with respect to the shaft member 4 can be suppressed. Therefore, when the stirring blade 30 is relatively large, and when the stirring
Even if a large load is applied to the shaft member 4, the rotation of the stirring blade 30 with respect to the shaft member 4 is suppressed, and stable rotation can be ensured. In addition, the strength of the stirring blade 30 can be increased by increasing the area of the plate-shaped member that is the engagement means 80.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a partial sectional view showing the configuration of the lacquer refining apparatus.

The lacquer refining device according to the second embodiment has substantially the same components as the lacquer refining device according to the first embodiment shown in FIG. In the second embodiment shown in FIG. 6, a jacket 9 including the container 1 and having an open upper portion is further provided between the container 1 and the support 2.

The jacket 9 is a container having a size that can accommodate the container 1 for containing the lacquer liquid therein.
The opening and the inner bottom surface are U-shaped in cross section and circular. Four through holes are formed on the bottom surface of the jacket 9 corresponding to the screw holes formed on the bottom surface of the container 1 described above. Then, a screw connecting the support base 2 and the container 1 is inserted through the through hole, and the screw is tightened.
The jacket 9 is sandwiched between the support base 2 and the container 1 and joined.

The jacket 9 is filled with a liquid heat medium such as water. Along with this, the jacket 9 is provided with a heater 91 as a heating medium heating means so as to be immersed in the contained liquid heating medium.

By doing so, the heater 91
Is heated, the heat medium in the jacket 9 is heated, and since this heat medium is always in contact with the container 1, the container 1 is heated. Therefore, the lacquer liquid inside the container 1 is also heated. At this time, if the container 1 is made of aluminum, since the thermal conductivity is good, the heat from the heat medium in the jacket 9 is efficiently transmitted to the lacquer liquid inside the container 1 and the lacquer liquid is efficiently heated. And the temperature of the lacquer liquid can be easily adjusted.

Here, as described above, the thermometer may be immersed in the lacquer liquid in the container 1 or the thermometer may be immersed in the heat medium in the jacket 9. The temperature of the lacquer liquid to be purified may be controlled with reference to the temperature display of these thermometers.

[0081]

As described above, according to the lacquer refining apparatus of the present invention, the shaft member having the stirring blade at the end and transmitting the rotational force to the blade is protruded from the blade by a predetermined length. In addition to providing the protrusion, a concave portion corresponding to the protrusion is formed on the inner bottom surface of the container, and the movable base for moving the container in the vertical direction is provided on the support base of the container, so that the movable mechanism can be operated. By this, the gap between the stirring blade and the inner bottom surface of the container can be easily adjusted, and since the projection of the shaft member has a predetermined length, even when the gap is adjusted, the projection is kept in the container. The shaft member keeps the state fitted in the concave portion, and the shaft member rotates while the both end portions are supported, so that there is an unprecedented excellent effect that the rotation of the stirring blade is stabilized.

In particular, when the refining conditions are changed little by little and the refining test is repeatedly performed, the gap between the stirring blade and the vessel can be easily changed, so that the repetitive test can be performed in a short time. It is possible to find the optimal conditions for purification in a short time. And since the container can be easily and independently removed from the stirring blade,
The maintenance of the container in each case becomes easy.

In addition, the inner bottom surface of the container is formed in a circular shape, and the end of the stirring blade is formed to have a predetermined gap on the inner wall surface of the container, and the end of the stirring blade is connected to the inner wall surface of the container. When formed in accordance with the shape of, the stirring blades and gaps are also formed on the inner wall surface of the container, so that the emulsified particles of the lacquer liquor can be dispersed so as to squeeze also on the inner wall surface. Since the area of dispersion can be expanded,
The stirring efficiency of the lacquer liquid can be improved.

In particular, when the inner wall surface of the container is formed in a tapered shape such that the space cross-sectional area of the opening of the container is larger than the area of the inner bottom surface of the container, the sliding area is further reduced. Since the size increases, the efficiency of stirring can be further improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating a configuration of a first exemplary embodiment of the present invention.

FIG. 2 shows the container disclosed in FIG. 1;
2A is a top view, and FIG. 2B is a cross-sectional view from the side.

3A and 3B are diagrams showing the stirring blade and the shaft member disclosed in FIG. 1, wherein FIG. 3A is a front view and FIG. 3B is a side view.

FIG. 4 is a front view showing another example of the stirring blade disclosed in FIG. 1;

FIG. 5 is a partial sectional view showing a configuration of a second exemplary embodiment of the present invention.

FIG. 6 is a partial sectional view showing a configuration of a conventional lacquer refining apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Support base 3, 30 Stirrer blade 4 Shaft member 5 Driving means 6 Driving means holding mechanism 7 Locking means 8, 80 Engaging means 9 Jacket 11 Depression 21 Movable mechanism 41 Projection

Claims (8)

[Claims] 1. A container for containing a lacquer solution, a support for supporting the container, a stirring blade for stirring the lacquer solution in the container,
A shaft member that transmits a rotational force to the stirring blade, a driving unit that rotationally drives the shaft member from the opening side of the container, and a driving unit holding mechanism that holds the driving unit, wherein the shaft member includes: A protrusion having a predetermined length is formed through the stirring blade, and a recess corresponding to the protrusion is formed on the inner bottom surface of the container, and the container is vertically movable on a support base of the container. A lacquer refining device characterized by having a movable mechanism that performs. 2. An inner bottom surface of the container is formed in a circular shape, and a center of the inner bottom surface is set as a rotation center of the stirring blade. 2. The lacquer refining apparatus according to claim 1, wherein the stirring blade is formed to have a length having a gap, and an end portion of the stirring blade is formed so as to correspond to a shape of an inner wall surface of the container. 3. The container according to claim 2, wherein an inner wall surface of the container is formed in a tapered shape such that a spatial sectional area of an opening of the container is larger than an area of an inner bottom surface of the container.
The lacquer refining device described. 4. The lacquer refining apparatus according to claim 1, wherein said stirring blade is locked to said shaft member via locking means movable up and down along said shaft member. . 5. The lacquer refining apparatus according to claim 1, wherein the container is formed of a metal member, and the stirring blade is formed of a non-metal member. 6. The lacquer refining apparatus according to claim 1, wherein the stirring blade is detachably engaged with the shaft member via an engaging means. 7. A heating means for heating the lacquer liquid in the container from above at a predetermined position of the driving means holding mechanism. Lacquer refining equipment. 8. The container according to claim 1, further comprising a jacket between said container and said support, said jacket including said container and having an open top. Lacquer refining equipment.