JP2004358461A - Coating container, coating apparatus using coating container, and method for recovering waste washing liquid of coating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating container used for pressure-feeding coating which is simply fitted to a coating pressure-feeding pump and to make work including coating filling concerning coating work, transportation, coating , and waste washing liquid treatment by using the coating container efficient. <P>SOLUTION: In the coating container for pressure-feeding coating, an openable/closable outlet-cum-inlet and an openable/closable air taking port are formed. In a method for recovering a waste washing liquid, after the coating container in which the outlet-cum-inlet can be connected to the coating pressure-feeding pump and a washing liquid introducing container are connected to the coating pressure-feeding pump, the washing liquid is introduced from the washing liquid introducing container and circulated in a coating apparatus for washing, and the coating container is used as a recovery container for the produced waste washing liquid. A barrel part in which the openable/closable air taking port is formed and a funnel-like barrel part in which the outlet-cum-inlet is formed are preferably attachable/detachable. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a paint container for pressure-feed coating having functions of supplying, filling, and transporting a paint, a coating apparatus using the paint container, and a method of collecting a cleaning liquid of the coating apparatus.

  In general, the pressurized coating method does not require paint soaking from a paint container to a roller, brush, or other coating machine. Are known. (Patent Documents 1 and 2 etc.) As a pressurizing type coating method, there are a closed tank type pressurizing method in which a closed paint tank is pressurized by an air compressor or the like and the paint is pressure-fed to a coating machine, or a pump such as a diaphragm pump. A pump type method in which a paint is sucked up by using a driving force and the paint is pumped to a coating machine is exemplified.

  The paint container used in the above-described method, particularly the pressure pump type method, is relatively large, made of metal, heavy, and bulky (for example, having a capacity of about 30 L), and has a structure in which the paint container and the pump are fixed. However, there is a problem that moving is troublesome. Also, at the painting site, open paint cans such as metal petroleum cans, metal pail cans, resin pail cans, adjust the viscosity with a dilute solution (water / thinner, etc.), stir with a mixer, The work of filling the paint into the above-mentioned paint container fixed to the pump has been performed, and time has been spent on the process up to painting. In addition, paint is adhered to the inner surface of empty cans that remain after use of paint, and there is no other way than to treat it as industrial waste, and even if the inner surface of the can is cleaned, it is difficult to treat the generated waste cleaning liquid. There was a problem that.

JP 2002-119909 A JP-A-2003-33687

  SUMMARY OF THE INVENTION An object of the present invention is to provide a paint container used for pressure-feed coating, which can be easily attached to a paint-feed pump, and to use the paint container to fill, transport, paint, and use a waste cleaning liquid for a painting operation. It is to improve the efficiency of work such as processing.

The present inventors have made intensive studies on the above-mentioned problems, and as a result, arrived at the present invention with a simple paint container having an openable and closable outlet / inlet and an air sampling port as a paint container used for pressure-feed coating. did. That is, the present invention
1. A paint container for pressure-feed coating, which is provided with an openable / closable outlet / inlet and an openable / closable air sampling port, and has a structure in which the outlet / inlet can be connected to a paint pump.
2. The paint container according to claim 1, wherein a body portion provided with an openable and closable air sampling port and a funnel-shaped body portion provided with an outlet and an inlet are detachable.
3. A coating apparatus comprising: the paint container according to claim 1 or 2; a paint pump; a connection unit that connects the paint outlet pump and the paint inlet pump; and a coating machine.
4. The coating machine is a pressure-feeding roller coating machine, and the pressure-feeding roller coating machine includes a roller unit having a built-in core, a support unit, a gripping unit, and a switch disposed on the gripping unit. 4. The coating apparatus according to claim 3, comprising a paint supply pipe for connecting the core, and an opening / closing valve disposed on the paint supply pipe and controlled by the switch.
5. The coating device according to item 4, wherein the core incorporated in the roller portion has a plurality of paint flow straightening holes,
6. The paint straightening hole has an angle within a range of 10 to 90 ° with respect to a core surface portion provided with the paint straightening hole or a tangent plane having the paint straightening hole as a contact point. The coating device according to item 5,
7. Item 3. The container according to item 1 or 2, wherein a washing liquid is introduced from the inflow device, the washing liquid is introduced from the inflow device, and the washing solution is circulated through the coating device, and the waste liquid is collected by the washing device. A method of collecting waste cleaning liquid using a paint container of
8. The method for recovering waste cleaning liquid according to claim 7, wherein the funnel-shaped body portion obtained by separating the paint container according to paragraph 2 is used as an inlet for the cleaning liquid.
About.

  Since the paint container of the present invention can be opened and closed with openings such as an air sampling port and a discharge port / inflow port, it functions as a paint supply body for supplying paint to a paint pressure pump, and also serves as a filler and transporter for paint and the like. Has a function as a body. Further, in a paint factory or the like, paint can be filled into the paint container, and the paint container filled with paint is carried into a work site, so that a conventional paint transfer operation at a work site can be performed. Can be omitted. In addition, by connecting the paint container to a paint pump, paint can be supplied to a coating machine and painting can be performed. Furthermore, the paint container can be switched to a washing funnel, and the coating device can be washed using the washing funnel. The waste washing liquid generated here can be filled in the paint container and collected.

  The paint container of the present invention is provided with an openable / closable outlet / inlet and an openable / closable air sampling port, and has a structure in which the outlet / inlet can be connected to a paint pump. Examples of the material include metal, resin, and the like. Specifically, a container like a resin tank such as polyethylene or polypropylene can be used, and the capacity is, for example, about 4 to 20 L. .

  The discharge / inflow port and the air sampling port have a structure that can be opened and closed.For example, the tip is screw-shaped, and may be opened and closed by attaching and detaching an outer lid. A cock or the like may be provided to open and close.

The outlet / inlet of the paint container can be connected to a paint pump such as a diaphragm pump or a plunger pump, and may be connected via a connecting part as necessary. The paint container of the present invention has a function as a “filler / carrier” and a function as a “supply body” for supplying to the paint pump because the opening is openable and closable. Here, examples of the liquid substance to be filled, transported, and supplied include a liquid paint, a cleaning liquid, a waste cleaning liquid, and the like. For example, if the outlet / inlet is `` open '', the air sampling port is `` closed '', the liquid paint is filled from the outlet / inlet, and then the outlet / inlet is `` closed '', It can function as a “paint filler and paint carrier”. Further, after the paint container of the present invention filled with paint is connected to the pressure pump, by opening both the discharge port / inflow port and the air sampling port, it can function as a “paint supply body”. .

  As for the shape of the above-mentioned paint container, it is desirable that the outlet / inlet has a funnel shape, and the body portion may be any of a square shape and a cylindrical shape. Here, the “funnel shape” does not necessarily mean only a funnel-like shape, but may have a suitable inclination for the paint to flow out, and includes, for example, a ship bottom shape.

  Further, since the paint container has a function as a filler of paint or the like, it is preferable that at least one of the containers is flat. In addition, a gripping portion can be attached to the paint container as needed to enhance the function as a transporter of paint or the like.

  As the liquid paint used for the pressure-feed coating using the paint container of the present invention, a known liquid paint is used and can be arbitrarily selected according to the purpose. Specific examples include water-based, organic solvent-based, and solvent-free paints containing an acrylic resin, a polyester resin, an alkyd resin, a polyurethane resin, and the like as a base resin, and these are a room temperature drying type, a room temperature curing type, and a polymerization reaction. It is classified into a curing type and the like, and any of them can be applied. Further, the liquid paint can form a colorless transparent, colored transparent, and colored opaque coating film. Here, "coloring" includes solid color tone, metallic tone, light interference tone, and the like.

  The viscosity of the liquid paint is desirably 500 poise / 20 ° C. or less, particularly preferably in the range of 10 to 400 poise / 20 ° C.

  In the present specification, the viscosity of the liquid paint is a value obtained by adjusting the sample to 20 ° C. and measuring the viscosity at 60 rpm using a B-type viscometer.

  Further, when the liquid paint is a water-based paint or an organic solvent-based paint, the solid content of the liquid paint is preferably in the range of 1 to 95% by weight, and more preferably 40 to 80% by weight.

  The work of filling the above-mentioned liquid paint into the paint container of the present invention may be performed at a painting work site, or may be performed directly at a paint factory. Since the paint container also has a function as a paint carrier, the paint container may be filled with a viscous or toned paint at a paint factory and transported by loading it on a truck bed or the like.

  The coating machine applied to the paint pump provided with the paint container of the present invention is not limited as long as it is used for the press coating, and examples thereof include a press roller coating machine and a press brush brush. In particular, in the present invention, since the coating workability is good, the coating machine is a pressure roller coating machine, and the pressure feeding roller coating machine has a roller portion having a built-in core, a support portion, a grip portion, and A paint supply pipe for connecting the paint supply pump and the roller core; and an open / close valve disposed on the paint supply pipe and controlled by the switch. A suitable pressure roller coating machine is suitable.

  Hereinafter, the pressure feed roller coating machine will be described.

  In the above-mentioned press roller coating machine, the paint supply pipe connecting the paint pump and the roller core is hollow, and one end thereof is connected to the paint pump and the other end is connected to the roller core. In the present invention, as the paint supply pipe, one having a light weight and excellent flexibility in terms of coating workability can be suitably used. The paint supply pipe consists of a paint-resistant supply pipe (I) that connects the paint pump to the on-off valve and a paint-resistant pipe (II) that connects the on-off valve to the roller core. You can also.

  In the paint supply pipe (I), since a high pressure for conveying the paint may be applied, the pipe (I) desirably has a high pressure resistance, and specifically, has a pressure resistance of 0.1 to It is desirable that the pressure be within the range of 50 MPa, the inside diameter be within the range of 5 to 13 mm, and the outside diameter be within the range of 7 to 25 mm. Examples of the material include resins made of nylon, urethane resin, fluorine resin, vinyl resin, vinyl chloride resin, and the like, and may be reinforced with steel wire, nylon thread, or the like.

  On the other hand, since the pressure applied from the on-off valve to the roller core is low in the paint supply pipe (II), the pressure resistance of the pipe (II) may be low. Specifically, the pipe (II) ) Is preferably 10 MPa or less, preferably in the range of 0.3 to 2.5 Mpa, the inner diameter is preferably in the range of 4 to 13 mm, and the outer diameter is preferably in the range of 5 to 20 mm. . Examples of the material include resins made of nylon, urethane resin, fluororesin, vinyl resin, vinyl chloride resin, and the like, and vinyl chloride resin is suitable.

  The roller unit is located at the tip of the pressure roller coating machine, has a built-in core unit, and is configured to cover the core unit with a rotatable cylindrical porous unit.

  The core portion is mounted inside the hollow portion of the cylindrical porous portion, and a conventionally known core portion can be used. The shape is not limited, and examples thereof include a polygonal column such as a cylinder, a triangular prism, and a quadrangular prism. The shape may be a combination of these, but the interior is preferably hollow. In particular, a polygonal column is desirable because the liquid paint seeps uniformly into the porous portion, and the thickness is preferably such that the outer twill line of the polygonal column contacts the hollow inner wall of the cylindrical porous portion. As a result, a substantially "camel-shaped" hollow portion is formed between the hollow inner wall surface and the outer surface portion of the polygonal prism. It is preferable to provide a plurality of paint flow regulating holes in the surface portion of the core portion (three surfaces are present in the case of a triangular prism).

  The paint rectifying hole is provided for adjusting the liquid paint pumped from the paint pump provided with the paint container of the present invention so as to uniformly ooze from the cylindrical porous portion of the roller portion. Further, the hollow portion of the core portion is provided as a paint distribution path for transporting the liquid paint inside the core, and is preferably cylindrical in shape.

  It is suitable that the inner diameter of the core part is 2 to 5 cm and the length is 5 to 30 cm.

  The liquid paint that has been pumped in the present invention flows into the paint flow path inside the core from the paint inflow portion of the core portion of the roller portion, and exits from the paint flow straightening hole communicating from the inside of the core to the outside, and has a cylindrical shape. A "camel-shaped" hollow portion is formed between the hollow inner wall surface of the porous portion and the outer surface portion of the core, and then oozes out through the cylindrical porous portion.

  The paint rectification hole provided in the core portion penetrates so as to communicate the inside and the outside of the core, and a plurality, preferably 2 to 10, particularly preferably about 2 to 5 per core is desirable. . The inner diameter is suitably 0.5 to 10 mm, particularly about 1 to 8 mm. When a plurality of paint straightening holes are provided in a single core, the inside diameter may be the same, but the inside diameter is small especially near the entrance where the liquid paint flows (for example, 0.5 to 4 mm, preferably When the innermost diameter is large (for example, 6 to 10 mm, particularly 7 to 8 mm) at the farthest position, the amount of the liquid paint seeping out from the cylindrical porous portion to the outside tends to become uniform. is there. One or more such paint flow straightening holes may be provided on each surface of the core in substantially the same number.

  In the present invention, in order to ensure that the liquid paint that is fed under pressure is leached out of the porous portion of the roller coating machine from any part of the porous part with an appropriate balance and that the paint can be uniformly transferred to the object to be coated. It is preferable that one or more paint rectification holes provided in the core part are provided at equal intervals in the vicinity of the paint inlet and the innermost part, and one or more in the center part of the core part as necessary. Assuming that the inner diameter of the rectifying hole near the paint entrance is 1, the inner diameter of the rectifying hole at the back may be about 2 to 5 times larger.

  In the present invention, the direction of the paint rectifying hole may be perpendicular or inclined to the surface portion of the core portion (three surfaces exist in the case of a triangular prism). The angle is preferably in the range of 10 ° to 90 °, particularly in the range of 10 ° to 60 °, with respect to the core surface portion provided with the paint flow straightening hole or the tangent plane having the paint flow straightening hole as a contact point. It is desirable to have.

  Here, the core surface portion provided with the paint flow straightening hole means a flat surface when the surface provided with the paint flow straightening hole is a flat surface. The tangent plane having the paint flow straightening hole as a contact means a plane having the paint flow straightening hole on the curved surface as a contact when the paint flow straightening hole has a curved surface.

  When the paint straightening hole has an inclination angle, the liquid paint can be uniformly and efficiently transferred from the paint flow path inside the core to the porous portion.

  In the present invention, a nozzle capable of adjusting the flow direction of the liquid paint may be attached to the paint straightening hole.

  The cylindrical porous portion is usually a wool roller or a mastic roller formed by winding a porous body such as wool, chemical fiber, or sponge around the outer surface of a cylindrical roller such as a paper tube. It has a porous structure so that the liquid paint can seep into it.

  As the support portion for supporting the roller portion, a conventionally known support portion can be used, and a tubular portion having a hollow interior and also serving as a paint supply pipe can be used.

  The grip part can partially include the support part and a paint supply pipe described below, and includes a switch. The material, shape, etc. are not limited as long as they can be gripped, but a lightweight material is suitable for positioning the center of gravity on the roller side during coating, and a resin material is particularly preferable.

  The switch is provided for remotely operating an on-off valve described later, and examples of a structure of the switch include a push button type that emits an electric signal and an air signal.

  Further, the grip portion may be provided with a stain prevention plate for receiving the rebound paint as needed.

  The on-off valve is provided for adjusting the amount of the paint supplied to the roller unit, and may be provided in a paint supply pipe connecting the roller unit core and the paint pump. The open / close valve may be either a solenoid valve that receives an electric signal from a remote control switch and operates, or an air operated valve that receives and operates an air signal. Further, a type may be used in which a voice or the like of an operator is converted into an electric or air signal and received to operate.

  The structure of the on-off valve may be a needle type, a ball type, a butterfly type, or the like. There is no particular limitation as long as it has a structure capable of controlling liquid, but a needle type is preferable.

  The installation position of the on-off valve is desirably on the paint supply pipe, and the distance between the on-off valve and the gripping part is desirably 50 to 300 cm, preferably 100 to 200 cm.

  If the distance between the on-off valve and the gripping part is less than 50 cm, it may be difficult to perform the painting operation, and if it exceeds 300 cm, a time difference occurs when the paint is discharged or stopped, and a smooth painting operation cannot be performed. In addition, the amount of paint to be discharged tends to decrease.

  Further, the on-off valve provided on the paint supply pipe can be fixed to the body of a painter, a scaffold at a work site, or the like.

  In the above roller coating machine, the weight of the gripper can be reduced by disposing a heavy open / close valve on the paint supply pipe, and the center of gravity of the roller coating machine during coating is moved from the gripper to the roller unit side. The total weight of the roller unit, the support unit, the grip unit, and the switches provided on the grip unit can be about 200 to 600 g, particularly about 300 to 500 g.

  In the present invention, the paint container of the present invention can be used as a method for cleaning the coating device after the coating is completed and for collecting the waste cleaning liquid. For example, the paint container according to the present invention is used as a recovery container for waste cleaning liquid generated by connecting a cleaning liquid inflow device to a paint pressure pump and then flowing the cleaning solution from the inflow device, circulating the cleaning solution through a coating device and performing cleaning. Can be used. As the inflow device, an inflow device such as a normal funnel may be used, or a funnel-shaped body portion obtained by separating the paint container of the present invention may be used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram illustrating a paint container and the like of the present invention, FIG. 2 is a schematic configuration diagram of a coating apparatus illustrating an example of an embodiment of the present invention, and FIG. 3 is a diagram illustrating another embodiment of the present invention. FIG. 4 is a schematic configuration diagram of a coating apparatus to be described. FIG. 4 is a schematic perspective view illustrating an example of a core portion of a pressure feeding roller coating machine used in the present invention. FIG. It is the schematic of the side view showing an example of the core part of a roller coating machine, FIG. 6: is the schematic explaining the example of the paint straightening hole provided in the core part.

  In FIG. 1, a paint container 1 is made of resin and has a cylindrical body at one side and a funnel-like structure at a body portion. An air sampling port 2 is provided at the cylindrical body portion, and a discharge port is provided at a lower portion of the funnel shape. A combined inlet 3 is provided. Such a paint container 1 has a function as a supplier of a paint or the like, a function as a filler and a carrier, and a function as a washing inflow device depending on the use. FIG. 1 shows a filler / carrier 1a, a washing inflow unit 1b, and a supply unit 1c.

  In the filler / transporter 1a, the air sampling port 2 is set to "closed", and the already viscous paint can be filled from the outlet / inflow port 3. The upper pig can be transported with the upper pig and can be directly brought into the work site. In the supply body 1c, the air sampling port 2 is disposed above the liquid level of the contained paint, and the body of the paint container 1 has a screw-shaped middle, and is detachable. And the funnel-shaped portion can be used as the washing liquid inflow device 1b.

  One end of the discharge / inflow port 3 has a screw shape, and is detachable from the connection section 4. One end of the connection portion has a screw shape, and the other end has a quick joint. A ball valve 5 is provided in the middle, and can be opened and closed.

  The filled / transported body 1a already filled with an acrylic resin-based aqueous white paint having a viscosity of 30 poise / 20 ° C. and a solid content of 40% is closed with the ball valve 5 of the connection portion 4 “closed”. After connecting to the inflow port 3 with the screw portion of the connection section 4, the connection was made to the diaphragm pump 6 by a quick joint as shown in FIG. The air sampling port 2 and the ball valve 5 were each opened, and the paint container 1 was used as the paint supply 1c. The switch of the diaphragm pump 6 was turned on to drive the pump. The paint of the paint supply body 1c reached the coating machine 8 via the paint supply pipe 7, and the paint was sprayed from the coating machine 8.

  After the coating was completed, the power of the diaphragm pump 6 was once turned off, the upper part of the coating material supply 1c was removed, and the cleaning funnel 1b was switched. About 10 L of the washing liquid was injected from the washing funnel 1b, the diaphragm pump 6 was driven again, and the washing liquid sprayed from the tip of the coating machine 8 was circulated as a receiving tray to wash the inside of the coating apparatus. Finally, the cleaning liquid sprayed from the tip of the coating machine 8 was filled from the outlet / inflow port 3 of the filler / carrier 1a to complete the cleaning.

  FIG. 2 is a schematic configuration diagram of a coating apparatus illustrating an example of an embodiment of the present invention. In FIG. 2, the roller coating machine has a triangular prism core 12 mounted inside a cylindrical porous roller pile 11, and a straightening hole having a diameter of 2 mm is formed on a first surface of the three surfaces of the core 12. A rectification hole having a diameter of 3.5 mm penetrates the second surface, and a rectification hole having a diameter of 5 mm penetrates one by one on the third surface. Near, the third surface is located at the farthest part, and the second surface is intermediate, both being equally spaced. Further, nozzles (not shown) through which the liquid paint flows toward the center of the core are respectively provided in the flow regulating holes on the first and third surfaces. The outer twill line of the triangular prism is in contact with the hollow inner wall of the cylindrical porous portion, so that a kamaboko-shaped hollow portion is formed.

A resin-made paint supply pipe 7 is connected from the core 12 to the diaphragm pump 6 via a resin-made gripping portion 14, a solenoid valve 15, a pressure gauge 9, and a paint regulator 10 via a connection portion 13. The distance between the end of the gripper 14 on the side closer to the paint supply pipe 7 and the solenoid valve 15 is 1500 mm.
The paint supply pipe 7 is made of a soft vinyl chloride resin reinforced with a polyester thread and has an inner diameter of 6 mm, an outer diameter of 11 mm, a working pressure of 1.0 MPa, and a burst pressure of 7.3 MPa. is there.

  On the other hand, the switch 16 is disposed on the grip 14 so that a signal can be transmitted from the switch 16 to the solenoid valve 15.

  The paint container 1 was filled with the same white paint as in Example 1, and the air sampling port 2 and the ball valve 5 were opened. At this time, the paint has reached the diaphragm pump 6.

  When the switch of the diaphragm pump 6 is turned on, the paint reaches the core part 12 via the paint supply pipe 7 via the connection part 13, passes through three rectification holes from the inside of the core, and is directed toward the center of the hollow part having a semi-cylindrical shape. Then, the liquid paint oozed out from the outside of the roller pile portion 11. Control is performed by the paint regulator 10 so that the value of the pressure gauge 9 is in the range of 0.3 to 2 MPa, and start and stop of the paint supply are performed by transmitting an electric signal from the switch 16 to the solenoid valve 15. The roller pile portion 11 was brought into contact with the slate plate and rotated to perform coating. Since the weight was light and the center of gravity was near the roller portion at the time of painting, the degree of fatigue at the time of painting was reduced, the workability of painting was improved, and the finish of painting was good. The cleaning of the coating apparatus and the recovery of the waste cleaning liquid were performed in the same manner as the method described with reference to FIG.

  FIG. 3 is a schematic configuration diagram of a coating apparatus illustrating an example of another embodiment of the present invention. In FIG. 3, the core 121 shown in FIGS. 4 to 6 is used as a core built in the roller unit, an air operated valve 151 is used as an on-off valve, a plunger pump 61 is used as a paint pump, and a plunger pump is used. A pressure-resistant paint supply pipe 7 ′ having an inner diameter of 6.35 mm, an outer diameter of 10 mm and a pressure resistance of about 22 MPa is used as a paint supply pipe connecting the air operated valve 151 and the air operated valve 151. The paint container 1 contains an acrylic resin-based aqueous white paint having a viscosity of 300 poise / 20 ° C. and a solid content of 78%. The plunger pump 61 and the compressor 18 were turned on, and the switch 16 was used to control the air operated valve 151 to perform painting. Since the discharge amount can be easily adjusted, the degree of fatigue at the time of painting has been reduced, and painting workability has been improved. In addition, the paint could be transferred uniformly, and the paint finish was good. The cleaning of the coating apparatus and the recovery of the waste cleaning liquid were performed in the same manner as the method described with reference to FIG.

  FIG. 4 is a schematic configuration diagram of a perspective view of the core portion 121. The resin core portion has a shape in which two cylinders are connected to both ends of a triangular prism.

  FIG. 5 is a schematic configuration diagram of a side view of the core portion 121, and has a hollow shape through a cylindrical hole having an inner diameter of about 7 mm. Here, the respective surfaces of the triangular prism in the core portion are referred to as A surface, B surface, and C surface.

  FIG. 6 is a view for explaining the position and direction of the paint rectification holes provided on each surface of the triangular prism of the core portion 121. FIG. 6A is a front view of the A, B, and C planes, and FIG. 6B is a core part when the A, B, and C planes are set to be horizontal. It is a schematic block diagram of the see-through | perspective front view of 21. Specifically, the upper part of FIG. 6B is set so that the surface A is horizontal, the middle part is set so that the surface B is horizontal, and the lower part is the surface C. Are set to be horizontal. All the paint straightening holes penetrate to the paint flow path inside the core 151 in a direction of 30 ° with respect to each surface on which the paint straightening holes are provided. The surface A is provided with paint rectification holes having an inner diameter of 2 mm at two locations symmetrically with respect to the center of the surface A, and the surface B is provided at the center of a position approximately 10 mm from one end of the surface B (farther from the paint inlet). One paint straightening hole having an inner diameter of 2 mm is provided, and one paint flow hole having an inner diameter of 2 mm is provided on the C surface at the center of a position about 10 mm from one end of the C surface (closer to the paint inflow portion). The core is provided with a paint straightening hole having a total of four inclination angles.

It is a schematic structure figure showing the paint container etc. of the present invention. It is a schematic structure figure of a coating device explaining an example of an embodiment of the present invention. It is a schematic structure figure of a coating device explaining another embodiment of the present invention. It is a schematic diagram of a perspective view showing an example of a core part of a pressure feed roller coating machine used for the present invention. It is the schematic of the side view showing an example of the core part of the pressure roller coating machine used for this invention. It is the schematic explaining an example of the paint flow regulating hole provided in the core part.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Paint container 1a Filler / carrier 1b Washing funnel 1c Paint supplier 2 Air sampling port 3 Outlet / inflow port 4 Connection part 5 Ball valve 6 Diaphragm pump 61 Plunger pump 7 Paint supply pipe 7 'Paint supply pipe 8 Coating machine 9 Pressure gauge 10 Paint regulator 11 Roller pile 12 Core 121 Core 13 Connection part 14 Gripping part 15 Solenoid valve 151 Air operated valve 15a Paint rectification hole 16 Switch 17 Support rod 18 Air compressor 19 Air pipe

Claims (8)

What is claimed is: 1. A paint container for pressure-feed coating, comprising: an openable / closable outlet / inlet and an openable / closable air sampling port, wherein the outlet / inlet is connectable to a paint pump. The paint container according to claim 1, wherein a body portion provided with an openable and closable air sampling port and a funnel-shaped body portion provided with a discharge port and an inlet are detachable. A coating apparatus comprising: the paint container according to claim 1 or 2; a paint pump; a connection unit that connects the discharge / inlet port to the paint pump; and a coating machine. The coating machine is a pressure-feeding roller coating machine, and the pressure-feeding roller coating machine includes a roller unit having a built-in core, a support unit, a gripping unit, and a switch disposed on the gripping unit. 4. The coating apparatus according to claim 3, further comprising a paint supply pipe for connecting the core, and an opening / closing valve disposed in the paint supply pipe and controlled by the switch. The coating device according to claim 4, wherein the core built in the roller portion has a plurality of paint flow straightening holes. The paint straightening hole has an angle in the range of 10 to 90 ° with respect to a core surface portion provided with the paint straightening hole or a tangent plane having the paint straightening hole as a contact point. The coating device according to claim 5. 3. A container for collecting a waste cleaning liquid generated by washing the cleaning liquid by flowing the cleaning liquid from the inflow device after the cleaning liquid inflow device is connected to the paint pressure pump and circulating the cleaning liquid through the coating device for cleaning. A method for recovering waste cleaning liquid using a paint container of the present invention. The method for recovering waste cleaning liquid according to claim 7, wherein a funnel-shaped body portion obtained by separating the paint container according to claim 2 is used as an inlet for the cleaning liquid.

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