JP4112193B2 - Paint foam extinguishing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foam extinguishing device for a paint provided in a tank for storing paint supplied from a paint drum when a paint is sent to a paint booth. In particular, air enters a highly viscous paint. The present invention relates to a paint foam extinguishing apparatus that can extinguish foam efficiently and inexpensively even when supplied to a tank in a state.
[0002]
[Prior art]
For example, there is a case where the paint in the paint drum can be temporarily stored in a tank in order to send the paint to a paint booth in a factory or the like, and the paint is supplied from this tank to the paint booth. Here, when a solvent paint containing a large amount of organic solvent is used, the tank inlet provided to receive the paint from the paint drum can to the tank is generally formed below the tank. If the paint inlet is provided above the tank and the paint in the paint drum can be supplied directly into the tank, the supplied paint may disturb the liquid level and generate bubbles. It is.
[0003]
[Problems to be solved by the invention]
By the way, in recent years, water-based paints have been studied from the viewpoint of environmental protection. When the conventional tank is used, there is a problem that due to the nature of the water-based paints, the viscosity is higher than that of solvent paints, resulting in poor bubble removal. There is.
In particular, when paint is supplied from a drum can, when the paint in the drum is low and the liquid level is close to the bottom of the can, air is sucked into the tank. Since the air is not released from the liquid surface, it is sent to the painting booth as it is and causes uneven coating.
[0004]
As such a countermeasure, as shown in Japanese Patent Laid-Open No. 2-31852, there is one in which the internal bubbles are removed by buoyancy and vibration by providing an ultrasonic transmitter. There is a problem that leads to cost increase.
Accordingly, the present invention provides a paint foam extinguishing apparatus that can eliminate foam efficiently and inexpensively even when a paint having a higher viscosity than a solvent paint is used, such as an aqueous paint.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention described in claim 1 includes a guide portion (for example, guide portion G in the embodiment) attached to an upper portion of a tank for storing paint (for example, the tank 1 in the embodiment), A replenishment pipe (for example, the replenishment pipe 7 in the embodiment) inserted into the tank through the guide portion, and a tank inner wall (for example, The inner wall 1a) in the embodiment is guided to the inner wall 1a), the end edge is formed along the inner wall of the dunk, the baffle plate (for example, the baffle plate 23 in the embodiment) close to the inner wall of the tank is attached, On the other hand, it is supported so that it can move up and down and can be fixed at a predetermined insertion depth so that the baffle plate is positioned at least on the paint liquid surface .
With this configuration, when supplying paint from a drum can etc. to the supply pipe attached to the tank via the guide portion, if air is mixed in the paint supplied from the drum can etc., replenishment When the supply end of the pipe and the position of the baffle plate are lifted upward until they are above the paint level in the tank and fixed at that position, and the paint is supplied to the supply pipe in this state, the air mixed in the paint is When it comes out of the supply pipe and is guided by the baffle plate and collides with the inner wall of the tank, it disappears and flows smoothly along the inner wall of the tank and is supplied into the tank.
[0007]
According to a second aspect of the present invention, the guide portion includes a fixing bracket (for example, the fixing bracket 8 in the embodiment) for inserting and fixing the replenishment pipe, and a guide member for guiding the vertical movement of the replenishment pipe (for example, And a guide member 9) according to the embodiment.
By comprising in this way, it becomes possible to give the function which guides a supply pipe to the guide member which is members other than the fixing metal fitting in which a supply pipe is inserted.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2, reference numeral 1 denotes a tank in which a paint, specifically, a water-based paint having a higher viscosity than a solvent paint is stored. The tank 1 is for supplying paint to a paint booth such as a factory, and receives supply of paint from a paint drum (not shown).
[0009]
An upper lid 2 is detachably attached to the upper portion of the tank 1, and a motor 3 is attached to the central portion of the upper lid 2, and a stirring blade (not shown) for stirring the paint in the tank 1 is attached to the shaft 4 of the motor 3. It has been. A part of the upper lid 2 is configured to be openable and closable via a hinge H.
A rectangular opening 5 is formed in a part of the upper lid 2. A lid 6 that closes the opening 5 is detachably attached to the opening 5. A foam extinguishing device S is attached to the lid 6. The lid 6 can be configured as a part of the foam extinguishing device S.
[0010]
The foam extinguishing apparatus S includes a guide part G attached to the lid 6 and a supply pipe 7 inserted into the tank 1 through the guide part G.
The guide portion G includes a fixing bracket 8 for inserting and fixing the supply pipe 7 and a guide member 9 for guiding the vertical movement of the supply pipe 7.
[0011]
As shown in FIGS. 3 and 4, the fixture 8 is a pipe-like member (exactly a member having a C-shaped cross section) and is aligned with the hole 10 formed in the lid 6 and fixed to the lid 6 by welding. ing. A replenishment pipe 7 shown in FIG. 5 is inserted inside the fixing bracket 8, and a clamp lever 11 for fixing the replenishment pipe 7 at an arbitrary position is rotatably attached to a bracket 12 on the upper portion of the fixing bracket 8 by a pin 13. It has been. 3, the locking portion 14 of the clamp lever 11 protrudes inward from the inner peripheral surface of the fixture 8 at the clamping position indicated by the solid line, and the protrusion of the locking portion 14 is released at the unclamping position indicated by the chain line in FIG. 3. Is.
[0012]
The guide member 9 is a pipe-shaped member that is fixed to the fixing bracket 8 via a bracket 15 and extends upward. The guide member 9 has a ring-shaped support bracket 16 along the guide member 9. It is attached so that it can move up and down. An L-shaped attachment member 17 is fixed to the support bracket 16, and the supply pipe 7 can be attached to the attachment member 17.
[0013]
On the other hand, two stoppers are fixed to the guide member 9 to restrict the vertical movement stroke of the support bracket 16, that is, the insertion length (depth) of the supply pipe 7 into the tank 1. Specifically, an upper stopper 18 that defines the upper limit of the lower end of the supply pipe 7 and a lower stopper 19 that defines the lower limit.
The upper stopper 18 and the lower stopper 19 can be detachably attached to the guide member 9 so that the attachment position can be adjusted.
[0014]
Here, as shown in FIG. 4, a plate member 20 is welded and fixed to one side surface of the ring-shaped support bracket 16, and a rotation prevention member 21 is attached to the lid 6 along the plate member 20. Thereby, the rotation direction of the support bracket 16 with respect to the guide member 9 is restricted.
Then, the replenishment pipe 7 shown in FIG. 5 is inserted into the fixture 8 of the guide portion G configured as described above, and the replenishment pipe 7 is attached to the attachment member 17 of the support bracket 16 as shown in FIG. 22 is supported.
[0015]
As shown in FIG. 5, the replenishment pipe 7 is an inverted J-shaped hollow member, and a pump discharge hose extending from a paint drum (not shown) is connected to a supply port K opened downward. A joint portion J to be formed is formed. In addition, since this supply port K is opening toward the lower side, when connecting the discharge hose of the pump, it can be connected with the end of the hose facing upward, and when the hose is connected, There is merit that paint does not spill.
Further, a locking groove M is formed in a straight portion of the replenishing pipe 7 over a certain length, and the locking portion 14 of the clamp lever 11 of the fixing bracket 8 is engaged during clamping, so that the fixing bracket 8 is engaged. The movement of the supply pipe 7 with respect to the vertical direction (between the upper stopper 18 and the lower stopper 19) is restricted.
[0016]
A discharge port O serving as a supply end is opened at the lower end of the supply pipe 7. The discharge port O is obliquely cut so as to be directed toward the tank inner wall 1a, and has a supply pipe 7 at the tip and a baffle plate that is inclined downward at an angle of, for example, 105 degrees. 23 is attached. The reason why the discharge port O is cut obliquely is to secure the flow rate of the paint from the discharge port O whose front is blocked by the baffle plate 23.
[0017]
As shown in FIGS. 6 and 7, the edge of the baffle plate 23 is formed in a shape close to the tank inner wall 1a and along the tank inner wall 1a. In this embodiment, the tank has a cylindrical inner wall 1a. The edge is formed in an arc shape in accordance with 1, and is formed in a sector shape as a whole.
In addition, as shown by a chain line in FIG. 6, by changing the swing angle of the supply pipe 7 with respect to the baffle plate 23, it is possible to match the position of the drum can disposed adjacent to the tank 1.
[0018]
According to the above embodiment, when a water-based paint is handled, since the surface is hardened if the liquid level in the tank 1 is greatly changed, the tank 1 is usually removed from the paint drum can when the liquid level is slightly lowered. Refill the paint. As the replenishment timing, at least when the liquid level of the paint in the tank 1 is above the lower limit position (LO) of the replenishment pipe, that is, above the lower limit position of the replenishment pipe 7 defined by the lower stopper 19, that is, the obstacle Replenishment is performed with the plate 23 immersed in the liquid. In this case, since there is no possibility that air is contained in the supplied paint, there is no problem even if the discharge port O of the supply pipe 7 is submerged in the liquid. Therefore, normally, when there is no possibility of air mixing, the supply pipe 7 should be lowered to the position of the lower stopper 19.
[0019]
Here, when the remaining amount of the paint in the paint drum can is reduced, if the supply is performed as it is, the paint sucked in air is supplied into the tank 1. Therefore, the clamp lever 11 is rotated upward to loosen, and the replenishment pipe 7 is positioned at a position where the baffle plate 23 is located above the liquid level, for example, an upper limit position (HI) at which rising is restricted by the upper stopper 18. ), Or pulled up to a position 22 below it, and the clamp lever 11 is rotated downward again to clamp the supply pipe 7. At this time, the replenishment pipe 7 is guided by the fixture 8 and is guided to the guide member 9 via the holder 22, the mounting member 17, and the support bracket 16, so that it can move smoothly upward. Further, clamping and unclamping can be easily performed by the clamp lever 11.
[0020]
Thus, when the paint is supplied through the supply pipe 7 in the set state, even if air is mixed in the paint, the air is diffused from the supply pipe 7 on the baffle plate 23 and thereafter When it hits the tank inner wall 1a, it disappears and is opened to the tank 1 inner space. Therefore, it is possible to reliably prevent air from entering the paint in the tank 1. In this case, since the paint which collided with the baffle plate 23 flows down smoothly along the tank inner wall 1a, new air is not mixed in this part.
Then, the paint drum can be replaced with a new one, and the supply of paint is continued by lowering the replenishment pipe 7 to a position where the baffle plate 23 is submerged below the liquid level when the fixed amount of paint is supplied and the air is no longer mixed. .
[0021]
Accordingly, when a highly viscous paint, for example, a water-based paint is used as in this embodiment, even if air is mixed into the paint and supplied to the tank 1, the air is mixed into the tank 1. Therefore, it is possible to prevent the occurrence of poor coating due to this, and to improve the coating quality. Therefore, it is easy to introduce a water-based paint whose needs are expanded from the viewpoint of environmental protection.
Although the present invention has been described by taking the water-based paint as an example, the paint used is not limited to the water-based paint as long as the paint is highly viscous.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, when supplying paint from a drum can or the like to the supply pipe attached to the tank via the guide portion, air is supplied into the paint supplied from the drum can or the like. If there is contamination, pull up the supply end of the supply pipe and the position of the baffle plate above the level of the paint liquid in the tank and fix at that position. When supplied, the air mixed in the paint comes out of the supply pipe, is guided to the baffle plate, disappears when it hits the inner wall of the tank, and is released into the tank space. It is possible to improve the coating quality.
[0023]
In addition, since the paint delivered on the baffle plate flows smoothly from the baffle plate along the inner wall of the tank and is supplied to the tank, air does not enter the paint after passing through the baffle plate. There is an effect that it can be improved.
[0024]
According to the second aspect of the present invention, the function of guiding the supply pipe can be provided to the guide member, which is a member other than the fixing bracket into which the supply pipe is inserted. As a result, the supply pipe is fixed. There is an effect that the two members of the metal fitting and the guide member can be stably supported.
[Brief description of the drawings]
FIG. 1 is a partial plan view of a tank equipped with a foam extinguishing device according to an embodiment of the present invention.
FIG. 2 is a partial side view of FIG.
FIG. 3 is a front view of an essential part of the embodiment of the present invention.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is a front view of a supply pipe.
FIG. 6 is a plan view of FIG.
7 is a plan view of FIG. 3. FIG.
[Explanation of symbols]
1 Tank 1a Inner Wall 7 Supply Pipe 8 Fixing Bracket (Guide)
9 Guide member (guide part)
23 Baffle G Guide part

Claims (2)

  A guide part attached to the upper part of the tank for storing the paint, and a replenishment pipe inserted into the tank through the guide part. The tank receives the paint supplied into the tank at the tip of the replenishment pipe. Guided to the inner wall, the edge is formed in a shape along the inner wall of the dunk, a baffle plate close to the inner wall of the tank is attached, the supply pipe can move up and down relative to the guide part, and at least the baffle plate on the paint liquid level A paint foam extinguishing device, characterized in that it is supported so as to be fixed at a predetermined insertion depth. 2. The paint foam extinguishing device according to claim 1 , wherein the guide portion includes a fixing fitting for inserting and fixing the supply pipe and a guide member for guiding the vertical movement of the supply pipe.

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