JPS59127635A - Apparatus for mixing two liquid materials - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for mixing two liquid materials, and more particularly to a device that is small and lightweight and is capable of sufficiently mixing two liquid materials in a short period of time.

Examples of mixing two-component materials include the production of resins such as polyurethane resins, epoxy resins, and unsaturated polyester resins by two-component thermal curing. Various types of molding are possible.

Furthermore, it is used in many fields because it hardens at room temperature or under heating to form a resin.

However, in the case of two-component materials such as Kotae, if the two components are not mixed uniformly, there may be parts that do not harden, or the material may not harden at all. strength is not expressed. Furthermore, materials with a short pot life have the problem of having to be thoroughly mixed within a short period of time.

Conventionally, in order to solve these problems, methods using a power mixer, a method using a static mixer, and a method in which two liquids are collided and mixed under high pressure have been developed.

However, new problems arise when using these devices. For example, in a method using a power mixer, a motor is attached to the mixing device for stirring, making the device large-scale and difficult to attach to a spray gun or the like.

In the method of using a static mixer, since the static mixer is located inside a pipe of about 30 cx, workability becomes poor when attached to a spray gun or the like. Therefore, when using these two types of mixing devices, the two liquids must be mixed once, and the liquid must be sent to the spray gun 1 through a hose or the like before spraying or other operations are performed. In this case, when the material has a short pot life, it tends to gel or thicken in one hose, causing trouble when spraying or pouring.

In the method of collision-mixing two liquids under high pressure, mixing is often insufficient depending on the materials.

In view of the above-mentioned circumstances, the inventors of the present invention have conducted intensive research and have come up with a simple device that can mix two liquids sufficiently in a short time.

The present invention will be explained in detail below.

The present invention provides at least three small holes in a disc having three or more small holes.
This is a two-liquid material mixing device characterized in that two liquid material mixtures are disposed at intervals in a liquid flow path, and a two-liquid material mixture is extruded from one end of the two-liquid material mixture to the other end.

Examples of the 2H materials to be mixed in the apparatus of the present invention include polyurethane resins, epoxy 5' resins, unsaturated polyester resins, and allyl resins. The curing time of these products ranges from a few seconds to several weeks.

The diameter of the disc with three or more small holes of the present invention is 3 to 100.
#rJI and a thickness of 1 to 10M are preferred, but this is not a limitation. In particular, it is sufficient that the disk has a thickness that will not be damaged by the pressure of the liquid.

In addition, the small hole drilled in this disk has an inner diameter of 0.1 to 5.
The inner diameter may be determined based on the viscosity and flow rate of the liquid so that turbulent flow of the liquid occurs in this area. However, if the small holes are made too large, the liquid will flow laminar, which tends to result in poor mixing. The number of small holes is 2i = 3
It is divided by more than one small hole, and when it passes through the small hole, it causes turbulent flow and mixes, so if it is 1 or 2, 2
If the liquid is not divided sufficiently, it will be difficult to mix the potash. Further, if the flow rate of liquid is large, the number of small holes may be increased, but 10 or less is suitable.

Therefore, the number of small holes is preferably 3 to 1○. For example, when the mixing device of the present invention is attached to a spray gun, the optimal disc diameter is 6 to 20 m and the thickness is about 1 to 3 layers. Also, the number of small holes is preferably 4 to 8, and the inner diameter is preferably about 0.5 to 2 mm. However, the shape, angle, and position of the small holes are not limited in any way.

If the distance between the disks is wide, the residence time of the liquid inside the space becomes longer, and turbulent flow due to swirling is less likely to occur, so 1 to 5 layers is optimal. This space is for the purpose of reunifying the liquid that has passed through the small holes in the disk, and also for the liquid to collide with the primary disk and cause swirling inside the space for mixing. .

The number of disks should be at least three. Materials with low viscosity and easy to mix can be sufficiently mixed with a small number of disks, but when mixing materials that are difficult to mix, it is necessary to use a large number of disks. be.

The mixing device of the present invention is lightweight and compact, and can sufficiently mix two axillary areas in a short period of time. It can be simply incorporated into the tip of a spray gun or mixing injection device, and has no effect on workability. do not. Furthermore, since spray painting or injection can be performed at the same time as mixing, there is no thickening of the liquid due to reactions after mixing, and it is very easy to spray or inject materials with light viscosity. In addition, since there is almost no viscosity increase due to the reaction of the two liquids, the spray pressure can be lowered in airless sprays, etc., resulting in benefits such as safety and simplicity of the device. Furthermore, since the device is simple, cleaning is also easy.

Hereinafter, the present invention will be specifically explained with reference to Examples.

Example As shown in Fig. 1, the rear end of the spray gun body (1) is equipped with inlet ports +21 and +31 for two liquids discharged from a high-pressure discharge machine (APW-5000, manufactured by Asahi Okuma Sangyo ■) and a cleaning solvent. The inlet (4) of the flow path (5) was connected and installed. The tip of the flow path (5) of the spray gun body 111 has six small holes with an inner diameter of 1.5 mtn, an outer diameter of 12 wtm, and a thickness of 2 Tf! M disk (6) and a ring with an outer diameter of 12 mm, an inner diameter of IQIIW, and a thickness of 2 mm, which is used as an example of the present invention.
1 were prepared, and these were combined alternately and continuously, and assembled into an outer shell (8) having an inner diameter of 12 mm to form a mixing device. A spray nozzle was screwed into the tip of the mixing device.

Support with this device! -4 theories-Thick! Spray tests were conducted with different materials, liquid temperature, and spray pressure. The viscosity of the main ingredient of the material at this time is 6300 cps' at 25°C, and 50°C
T900cpsT available, curing agent 2500pS at 25℃
It is.

The results are shown in the table. This K shows that when the mixing device of the present invention is used, even highly viscous materials can be sprayed well.

Comparative Example A static mixer was attached to the high-pressure discharge device of Kan Yingjo's example to create a mixing device. The mixer was connected to a spray gun with a 2 m hose, and the above material was sprayed with this equipment.

Claims (1)

[Claims] A two-liquid material characterized in that at least three disks having three or more small holes are arranged at intervals in a liquid flow path, and a two-liquid material mixture is extruded from one end of the disk to the other end. Mixing equipment.