JP2000140717A - Two-liquid mixing type portable spray gun - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the operability of the subject spray gun by using two aerosol valves as two valve units. SOLUTION: A two-liquid mixing type portable spray gun is constituted so that a mixing part 2 is provided to the rear part of a nozzle 1 and two valve units 7, (8) communicating with the mixing part 2 by a fluid are arranged to the rear of the mixing part 2, and a first liquid flexible pipe 11 and a second liquid flexible pipe are connected to the rear end parts of two valve units 7, (8) and the other ends of these flexible pipes are connected to respective liquid supply pressure containers and two liquids are simultaneously supplied by the opening and closing of the valves of the valve units 7, (8) to be mixed in the mixing part 2 and the resulting mixture is ejected from the nozzle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-part portable spray gun, and more particularly, to a two-part portable spray gun using two aerosol valves.

[0002]

2. Description of the Related Art Conventionally, various techniques for mixing two or more liquids have been studied. However, studies on valve opening / closing techniques for mixing a plurality of liquids have not always been sufficient.

[0003]

SUMMARY OF THE INVENTION It is a first object of the present invention to improve the operability of a two-liquid type portable spray gun by using two aerosol valves as two valve units. A second object is to make the operation lever-operated, to mix urethane foam using a urethane foam material as one liquid and to use a curing agent as two liquids, and to eject urethane foam from a nozzle.
In addition, two tubes are prepared to supply the two liquids.
A third object is to make it easy to assemble and disassemble the two pipes by connecting them to two aerosol valve units.

[0004]

According to the present invention, a mixing section 2 is provided at the rear of a nozzle 1, and two valve units 7, 8 which are in fluid communication with the mixing section 2 are arranged behind the mixing section 2. ,
A first liquid flexible tube 11 and a second liquid flexible tube 12 are connected to the rear ends of the two valve units 7 and 8, respectively, and the other ends of the flexible tubes are connected to respective liquid supply ports. Two liquids are supplied simultaneously by opening and closing the valves of the valve units 7 and 8 to form a two-liquid mixture in the mixing unit 2, and the mixture can be ejected from the nozzle 1. It is a spray gun.

[0005]

According to the present invention, as described above, the mixing section 2 is provided at the rear of the nozzle 1, and two valve units 7, 8 which are in fluid communication with the mixing section 2 are arranged behind the mixing section 2. A first liquid flexible tube 11 and a second liquid flexible tube 12 are connected to the rear ends of the two valve units 7 and 8, respectively, and the other ends of the flexible tubes are connected to respective liquid supply ports. Two liquids are supplied simultaneously by opening and closing the valves of the valve units 7 and 8 to form a two-liquid mixture in the mixing unit 2, and the mixture can be ejected from the nozzle 1. Since it is a spray gun, when a urethane foam material is used as the first liquid and a curing agent is used as the second liquid, the nozzle 1
Urethane foam can be spouted from In use, when a finger is put on the grip portion of the lever 3 and the lever is pulled rearward, the first case 4 is pressed rearward by a projection formed on the upper portion of the lever. The valve stem 16 located in the rear space of the first case 4 is sequentially
Since it is pushed down, the stem rubber 20 is deformed. Therefore, the deformation of the stem rubber 20 opens a side hole of the valve stem 16 that has been closed, and the contents can be simultaneously simultaneously released from the urethane foam material pressurizing container and the curing agent pressurizing container. The liquid is supplied to the mixing section 2 through a flexible tube, where the two liquids are mixed by a spiral, and
The urethane foam is ejected from (Fig. 4). When the finger that has been pressed is loosened, the lever 3 returns to any position by the elastic force of the spring steel stopper 15, and the valve stem returns to the original position by the elastic force of the coil spring. The stem rubber also returns to its original position, and the side hole of the valve stem 16 is closed. Therefore, the supply flow path is shut off (FIG. 3). The return stroke of the first case 4 is the first
A locking projection provided on the outer periphery of the rear end portion of the rearwardly facing outer cylindrical portion of the case 4 engages with a locking hole formed in the cylindrical portion of the second case 5 located outside and surrounding the second cylindrical portion. Limited by stopping.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Referring to the drawings, FIG. 3 shows an unused state, and FIG. 4 shows a used state. In this embodiment, a urethane foam material is used as the first liquid and the second liquid is used.
A curing agent is used as a liquid. A spiral body 2 is provided inside the rear part of the nozzle 1 as a mixing section. The mixing section 2 is connected via a first case 4 and a second case 5 to two aerosol valve units 7, 8 arranged in parallel. At the rear ends of the two valve units 7 and 8, a flexible tube 11 for urethane foam material of the first liquid and a flexible tube 12 for the curing agent of the second liquid are connected, respectively. The ends are connected to the respective pressurized containers for liquid supply via buttons, the valve units 7 and 8 are operated with the lever 3, and the two liquids are supplied simultaneously by opening the valves. This is a two-part mixing type portable spray gun capable of mixing and discharging the urethane foam of the mixture from the nozzle 1. The lever 3 for operating the valve units 7 and 8 is made to be able to advance and retreat in the front-rear direction so that the valve can be opened and closed. Lever 3
Is connected to the pivot pin 22 of the lever 3 with the upper end as a fulcrum.
The shaft hole 23 of the case 5 supports the upper end of the second case 5. The first case 4 is inserted into the cylindrical portion of the second case 5 from the front thereof.
Is inserted so that it can move slightly in the front-rear direction. First
The case 4 is provided with a tubular portion for inserting the rear end portion of the nozzle 1 on the front side thereof, and two short tubular portions for valve insertion are formed on the rear wall of the second case 5. The front end of the valve stem is fitted into the rear end space of the first case 4 through an opening in the rear wall of the second case 5, and the rear end of the valve is supported by a support hole formed in the adapter 9. Then, the adapter 9 is fitted into the large-diameter cylindrical portion formed on the rear wall of the second case 5, and the adapter 9 is inserted into the second case 5 from behind.
Is supported and fixed by a case screw 6 screwed to the outer periphery of the large-diameter cylindrical portion to prevent detachment thereof. The rear end of the valve unit is projected from the rear wall opening of the case screw 6 so that the valve unit 7
The rear end of the valve unit 8 is connected to the first flexible tube 11 via the tube ring 10, and the rear end of the valve unit 8 is connected to the second flexible tube 12 via the tube ring 10. The grip portion 5 ′ is hung down from below the front cylinder portion of the second case 5, the spring steel stopper 15 is extended forward from an appropriate position of the grip portion 5 ′, and the other end of the spring steel stopper 15 is connected to the lever 3. Is locked in the locking recess 3 ′ formed at an appropriate position in the lower part of. The upper part of the lever 3 is provided with a protrusion projecting rearward, so that the first case 4 can be pressed rearward. The rear end of the nozzle 1 is inserted into the front cylinder of the first case 4 to form a two-liquid mixing portable spray gun. When the lever 3 is actuated, the first case 4 is pressed backward by the projection to open the valve, and the flow path from the material supply container to the nozzle 1 is completed. Thus, the urethane foam can be ejected from the nozzle with a relatively small force.

[0007]

According to the present invention, as described above, by using two aerosol valves as two valve units, a two-liquid mixing type portable spray gun can be operated with relatively small force as compared with the conventional one. This has the effect of improving operability. When the operation is lever-operated, urethane foam material is used as one liquid, and two liquids are mixed using a curing agent as two liquids, and when urethane foam is ejected from the nozzle, the finger force can be small. It is possible to reduce the fatigue of the fingers and to endure the spray gun for a long time. Further, since two tubes are prepared for supplying the two liquids, and the two tubes are connected to the two aerosol valve units, there is an effect that the assembly and disassembly are facilitated.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a two-liquid mixing type portable spray gun of the present invention in an unused state, but shows a valve unit in a plan view.

FIG. 2 shows buttons of respective liquid supply containers (not shown) to which the other ends of first and second flexible tubes connected to the valve unit of the two-liquid mixing type portable spray gun of the present invention are connected.

FIG. 3 is a vertical sectional view of the two-part mixing type portable spray gun of the present invention in an unused state.

FIG. 4 is a central longitudinal sectional view of the portable spray gun of the present invention in use, showing a valve unit in a longitudinal sectional view to show the inside thereof.

FIG. 5 is a rear view of the two-part mixing type portable spray gun of the present invention, showing a case screw part.

FIG. 6 is a schematic view showing a connection relationship of a fulcrum between a lever and an outer case of the two-liquid mixing type portable spray gun of the present invention.

FIG. 7 is a longitudinal sectional view of the valve unit used in the two-liquid mixing type portable spray gun of the present invention in a used state.

FIG. 8 is a longitudinal sectional view of a valve unit used in the two-liquid type portable spray gun of the present invention in an unused state. It is sectional drawing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Nozzle 2 Mixing part 3 Lever 4 1st case 3 'Depressed part for stopper locking 5 2nd case 5' Handle part of 2nd case 6 Case screw 7 1st valve unit 8 2nd valve unit 9 Adapter 10 Pipe ring 11 1st flexible tube 12 2nd flexible tube 13 1st button 14 2nd button 15 Stopper 16 Valve stem 17 Side hole of stem 18 Valve housing 19 Mountain cap 20 Stem rubber 21 Coil spring 22 Lever shaft pin 23 Shaft hole

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H067 CC44 DD04 DD12 DD22 FF01 GG12 4F033 QB08X QB08Y QB16Y QB18 QD06 QD15 QE06 QE15 QE19 QE24

Claims (4)

[Claims] 1. A mixing section 2 is provided at a rear portion of a nozzle 1. Two valve units 7, 8 which are in fluid communication with the mixing section 2 are arranged behind the mixing section 2, and the two valve units 7 are provided. , 8 are connected to the first liquid flexible tube 11 and the second liquid flexible tube 12, respectively, and the other ends of the flexible tubes are connected to the respective liquid supply pressurized containers. The two liquids are supplied simultaneously by opening and closing the valves of the valve units 7 and 8,
A two-liquid mixing type portable spray gun capable of mixing two liquids in a mixing section 2 and ejecting the mixture from a nozzle 1. 2. A lever 3 for operating the valve units 7 and 8 is made movable forward and backward to open and close the valve.
The first case 4 is supported by the upper end of the case 5 and is inserted into the cylinder of the second case 5 from the front thereof so as to be slightly movable in the front-rear direction. A cylinder portion for inserting an end portion is provided. Two short cylinder portions for valve insertion are formed on the rear wall of the second case 5, and a valve stem is fitted into the two short cylinder portions. The part is fitted into the rear end space of the first case 4 through the opening in the rear wall of the second case 5, the rear part of the valve is supported by a support hole formed in the adapter 9, and the adapter 9 is It is fitted into a large-diameter cylindrical portion formed on the rear wall, and it is supported and fixed from behind by a case screw 6 screwed to the outer periphery of the large-diameter cylindrical portion of the second case 5. The rear end of the valve unit from the second case 5
The grip portion 5 ′ is hung down from the lower side of the front cylinder portion of the lever 3, the spring steel stopper 15 is extended forward from an appropriate position of the grip portion 5 ′, and the other end of the spring steel stopper 15 is connected to the lower portion of the lever 3. Locking recess 3 'formed at an appropriate position of
And a projection protruding rearward is provided on an upper portion of the lever 3 so that the first case 4 can be pressed rearward, and the rear end of the nozzle 1 is connected to the front cylindrical portion of the first case 4. 2. The mixing unit 2 is formed of a spiral body, and when the lever 3 is actuated, the valve is opened by pressing the first case 4 rearward with the projection. Liquid mixing portable spray gun. 3. The valve units 7, 8 have a valve stem 16 fitted in a valve housing 18, and a stem rubber is interposed on the valve housing.
8 is fitted into the mountain cap 19, the tip of the valve stem 16 is projected from the central opening of the mountain cap 19, and a coil spring is interposed between the lower end of the valve stem 16 and the inner bottom of the valve housing. 2. A two-part mixing portable spray gun according to claim 1, wherein a fluid flows when deformed. 4. The two-liquid type portable spray according to claim 1, wherein the first liquid is a urethane foam material, and the second liquid is a curing agent, which is mixed in the mixing section 2 and ejected as urethane foam. gun.