JPS63104679A - Method and device for mixing, discharging or ejecting liquid - Google Patents

Abstract

PURPOSE:To shorten the process for mixing by passing two kinds of liquids to be mixed through respective narrow passages, disposing the outlets of the narrow passages to face each other to bring both the effluent flows into face to face collision against each other, then ejecting the mixed liquids from a nozzle. CONSTITUTION:Two kinds of the pressurized liquids A, B are passed through respective flow passages 1, 2. Said flow passages are restricted to form the narrow passages 3, 4, by which the flow velocity is increased. In addition, the outlets of the narrow passages are disposed to face each other so that the effluent flows A1, B1 collide face to face against each other. The two liquids A, B are thereby mixed and the mixed liquid is passed through a piece of flow passage 6 and is discharged or ejected from a nozzle 7 or the like. More specifically, the desired mixing is executed by most effectively mixing two kinds of the liquids in the mixing chamber of the capacity as small as 0.5-2.0cc and repeating such mixing several times at need. The setting of a mixing ratio to a precise microquantity is permitted; in addition, there are no moving parts; the construction is simple, the taking care of the device is easy; the heat loss is low and the discharge of a high-temp. liquid is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method and apparatus for mixing and discharging liquids.

[Conventional technology]

Originally, it is extremely rare to use a single liquid when discharging or spraying a liquid.
In most cases, multiple types of liquids are mixed together, and the mixing of these multiple types of liquids is generally performed as a preliminary operation before being charged to the dispensing machine or coating machine. This is because it is very difficult to maintain a precise mixing ratio and obtain uniform dispersion, and unless you rely on specialized equipment and special operations, you will not be able to obtain a satisfactory mixed liquid. It is.

However, recently there have been many cases in which it is necessary to perform mixing immediately before discharging or ejecting, for example, when dealing with two-component mixed curable resins. In these cases, just before cancer.

In other words, this has been done by directly connecting a mixer to the gun.Here are some examples.

(1) Gun with static mixer No. 101! ! ! Refer to FIG. 1, which is a baffle plate type mixer 161 with a discharge gun 167 directly connected to one end thereof. Pressurized two types of liquids Q and R flow in from one inlet, and both liquids merge and move downstream, and the baffle plate 162
A, 162B, etc. flow while being mixed, and both liquids are mixed. However, the mixing effect is very low and it has to be repeated several times.The more times you repeat it, the better the mixing effect will be, so the length of the mixer can be as short as 300m and as long as 1000m. It will also happen. This length is the length of the mixing chamber, and such a long length causes various problems. First, the liquid in the mixing chamber is unmixed, and a large amount of liquid means that there is a lot of waste. Second, during the long journey, reactions may occur and these cannot be discharged, and third, cleaning is difficult. Fourth, these mixers are generally not equipped with heating to prevent reactions, making them unsuitable for use with high viscosity paints or in winter.

(2) Gun with rotating stirring vane type mixer Please refer to FIG. 11, a discharge gun 17 is directly connected to one end of a horizontal stirring vane type mixer 171. The volume of the stirring tank needs to be at least 500 kg, and in this case as well, there is a lot of waste as described above. Furthermore, the seal 175 on the high-speed rotating shaft of the stirring blade was easily damaged and maintenance was difficult.

[Problems to be Solved] In the conventional systems described above, it is judged that further improvement is difficult due to their structure. Therefore, the inventor of the present invention considered improvement measures from a completely different perspective from the conventional method described above.

The motivation for the present invention is to shorten the mixing process and mixing time, and to reduce and simplify the apparatus.

(Means for Solving the Problem) The gist of the present invention is to pass two liquids to be mixed through their respective narrower channels or bottlenecks, with the outlets of the bottlenecks facing each other, and to This is a method and apparatus for mixing outflow streams by causing them to collide head-on, and then discharging or ejecting them from a nozzle.

There are two types of methods according to the present invention, and each method will be explained separately.

(1) Basic method Please refer to Figure 1. Two pressurized liquids A and B are flowed into the respective channels 1 and 2, and they are squeezed to form the bottleneck 3.
,4 and none.

And the outlets of these bottlenecks are made to face each other, and the outflow flow A1. Bi is caused to collide head-on with each other, thereby mixing both liquids, leading the mixed liquid AB into one flow path 6, passing it through the discharge flow path 6 in the gun 10, and discharging the mixed liquid from the nozzle 7. This is a method of discharging or gushing.

The head-on collision of the liquids mentioned above refers to a case where the directions of the outflow flows from one bottleneck are opposite to each other and are on a straight line, as shown in Figure 3.The force of the collision that occurs in this case is , which is much larger than the above-mentioned static type or stirring type. This is particularly noticeable when the flow velocity is 30 m+/sec or more. The large force of their collision shatters the two liquids into fine dust.

That is, mixing is performed.

These hydrodynamic calculations involve too many unknown factors and are extremely difficult, so we will omit them for now.

However, the force generated during the above collision, that is, the amount and speed flowing out from the bottleneck, are determined by factors such as the pressurizing force on the liquid, the shape of the bottleneck, the size and length of the cross-sectional area, the characteristics of the liquid, and the temperature at that time. depends on. Therefore, when changing the mixing ratio of both liquids, it is sufficient to change the above factors.

In addition, in the above-mentioned head-on collision, if there is a significant difference in the force of the two outflow flows, a large force will apply direct pressure to the exit of the smaller bottleneck, blocking its outflow. To prevent that.

It is not necessary to place the opposite directions of the two outflow flows on the same straight line, that is, they can avoid each other, cross each other, and collide, so that the larger force reaches the exit of the bottleneck of the smaller force. can avoid a direct hit. Note that if the above-mentioned cross collision is illustrated in a diagram, it is as shown in the fourth Wi. In other words, it refers to a situation in which the directions of two opposing outflow flows intersect with each other.However, in a cross collision, the force generated is relatively small compared to the case of a head-on collision, and therefore the mixing effect is also reduced. That is inevitable.

(2) Development of the basic method This method is a method in which the above-mentioned basic method is repeated multiple times to perform multi-stage mixing, and then the mixture is discharged or ejected from a nozzle.

Refer to Figure 2 for two pressurized liquids C and D.

These flow channels are constricted to form bottlenecks 13 and 14, through which the flow velocity is increased, and the outlet ports of these bottlenecks are made to face each other, so that the outflow flows C1, D, are caused to collide head-on, thereby mixing both liquids C and D to form a primary mixed liquid CD, which is guided into one channel 16.

Then, the mixed liquid CD is divided into two channels 1f and 1g, passed through the inlet channel 21.22, narrowed down these channels, passed through the bottleneck 23.24 again to increase the flow rate, and the outlet ports of these facing each other to cause their outflow streams to collide head-on, thereby remixing the primary mixed liquid CD to form a secondary mixed liquid CD, which is guided into one flow path 25, and also as required. By repeating the same operation as described above, the tertiary mixed liquid CD, and the quaternary mixed liquid CD were obtained.

.

This is a method of discharging or spouting from them.

In addition, in the above-mentioned head-on collision, if the velocity of both outflow flows is low, the desired mixing effect cannot be obtained, which is the result of an experiment.

It has been found that it is desirable for one of these to be at least 30@/■11 or higher.

In addition, those that were experimentally handled as liquids and were effective were dissolving type coating materials, emulsion type coating materials,
It is the main ingredient or its curing agent, catalyst, solvent, etc. in a two-component mixed curable resin.

Of course, among the liquids mentioned above, those with relatively high viscosity can be used, and when precisely adjusting the mixing ratio, the flow rate of the outflow from the bottleneck can be increased by lowering the viscosity of the supplied liquid as described above. It can also be used to heat liquids.

Next, the basic structure of the device based on the basic method of the present invention will be explained. Please refer to FIG.

(3) Two automatic opening/closing valves 51A and 51B for liquid supply are attached to the body 60 of this device. The outlet channels 5JIA, 58B of these valves communicate with two receiving channels 59A, 59B provided in the body 60, and they communicate with the two inlet channels 59A, 59B provided in the body 60, Connected to 64A and 64B.

The collision mixing plate 61 has a cylindrical structure and is divided into upper and lower parts. The upper part is a slit plate 62, and the above-mentioned two inlet flow passages 64A and 64B are provided on the upper surface thereof, penetrating approximately symmetrically toward the outer periphery around the center point on the plate. In addition, a deep blind hole is provided in the center of the lower surface of the chain plate as part of the mixing chamber, and on the center line connecting the blind hole and the two inlet channels 64A and 64B. , two slits 65 and 66 are provided.

Next, the lower part is a mixing plate 63, and in its center is a mixing chamber 67 having a depth D3, which is a hole with the same diameter as the blind hole 67°.
A downstream passage 68 is provided below the cough chamber.

The flow path of the collision mixing plate described above is connected to the discharge flow path 69 in the body 100, and further connected to a nozzle 70 and the like.

Next, the structure of the apparatus which is a further development of the above basic method will be explained. Please refer to FIGS. 6 and 7.

(4) Two automatic opening/closing valves 91A and 91B for liquid supply are attached to the body 100 of this device. The outlet channels 98A and 98B of these valves communicate with two receiving channels 99A and 99B provided in the body 100,
These are two inlet channels 104A on the first collision mixing plate 101 provided in the gun body 100.

It communicates with 104B.

The structure of the first collision mixing plate 101 is cylindrical, and the upper surface has the above-mentioned two inlet channels 104A and LO4B located near the outer periphery of the plate almost symmetrically about the center point on the plate. It is provided through. And in the center of the bottom of the chain plate,
A blind hole with a depth of 107s is provided as part of the mixing chamber, and the blind hole and the above two inlet flows M104A, 104
Two slits 105.
106 is provided.

Next, a second collision mixing plate 111 is connected to the lower surface of the first collision mixing plate 101 . The structure of the chain plate is cylindrical, the same as the first collision mixing plate 101, and in other words, a branched flow path from the mixing chamber is provided above the chain plate. A part of the mixing chamber (blind hole) on the lower surface of the first collision mixing plate 101
A hole having the same diameter as 1 is opened downward to a certain depth on the upper surface of the second collision mixing plate 111, and this hole is defined as the mixing chamber 107. Further, below the mixing chamber 107, a single downstream channel 108 is opened to a certain depth, and branch channels are distributed to the left and right at right angles to the downstream channel 108 on a straight line. 113A, 113B are provided, and these branch channels 113A, 113B have a certain length L and are perpendicularly downwardly directed inlet channels 114A, 1.
14B can be opened from the bottom. The subsequent steps are the same as those of the first collision mixing plate 101. In other words, in the center of the lower surface of the chain plate,
A blind hole is provided as part 1178 of the mixing chamber.

Two slits 115 and 116 are provided on the center line between the blind hole and the two entry channels 114A, 114B. When the second collision mixing plate 111 is connected to the first collision mixing plate 101, the respective slits 105, 106 and 115, 116 are overlapped so that they intersect with each other.

In the above, the two collision mixing plates are stacked and connected, but if necessary, the third collision mixing plate 121 having the same structure,
Furthermore, a fourth collision mixing plate 131. Fifth collision mixing plate 141.・
..., etc., and a plurality of collision mixing plates are stacked and connected and incorporated into the body 100.

Mixing chamber 1 on the last impingement mixing plate connected as described above
A downstream passage 148 from 47 is connected to a discharge passage 149 in the body 100, and then connected to a nozzle 150 and the like.

It should be noted that the directions of the slits in each of the above-mentioned plurality of slits are stacked so that they intersect when viewed from above (Fig. 8).
, these directions may be viewed in plan and stacked on the same straight line (FIG. 9).

The cross-sectional shape of the slit is preferably triangular or square; the former has advantages such as easy manufacture and the latter low cross-sectional resistance.

[For production]

(1) The operation of the device in the basic structure described in item (3) of [Means for Solving the Problem] above will be described.

Referring again to FIG. 5, the two types of liquids A and B pressurized to the required pressure are operated by the respective automatic opening/closing valves 51A and 51.
B, passes through the receiving channels 59A and 59B in the body 60, and reaches the collision mixing plate 61. Then, it passes through the two entrance channels 64A and 64B on the upper part of the chain plate, that is, the upper surface of the slit plate 62, reaches the narrow slit holes 65 and 66, and passes therethrough. At that time, the flow velocity of each liquid was increased (around 3 y/see), and the two liquids A and B flowing out from the slit holes 65 and 66 facing each other were
Two outflow streams A1. B, resulting in a head-on collision. At this time, both liquids A and B are at high speed and have large momentum, and their forces crush both liquids A and B into fine particles, and the turbulent flow caused by the collision mixes both liquids A and B. In this way, The mixed liquid AB is pushed by the subsequent mixed liquid from the mixing chamber 67, exits to the downstream passage 68, passes through the discharge passage 69 in the body 60, and is discharged or discharged from the nozzle 70 etc. connected thereto. It is squirted.

(2) The action of the gun in the structure developed in item (4) of [Means for Solving the Problem] above will be described.

Please refer to FIGS. 6 and 7, the two types of liquids C and D pressurized to the required pressure are connected to the respective automatic opening/closing valves 91A.
, 91B in the body 100 of the device.
It passes through 9A and 99B and reaches the first collision mixing plate 101. Then, it enters the entry channels 104A and 104B on the plate, and enters into the narrow slit holes 105 and 106 at the end thereof. While passing through the slit, the respective liquids C and D are accelerated and flow out into the mixing chamber 107 through the slit holes facing each other. At the same time, these outflow flows C, , D□ collide head-on with each other. At this time, both liquids C and D are pulverized into small amounts due to their high speed and large momentum, and the turbulent flow caused by the collision mixes both liquids C and D. In this way, they are mixed. The combined liquid mixture CD1 is pushed by the subsequent mixed liquid from the mixing chamber 107 and exits to the downstream path 108. The mixed liquid CD passes through branch channels 113A and 113B distributed to the left and right, and enters the respective inlet channels 114A.

Enter 114B. Then, at the end, it enters the respective slit holes 115 and 116 again as in the above case. Thereafter, as described above, after each exits the slit hole, secondary mixing is performed by head-on collision. However, depending on the time, repeated mixing may be required. At that time, the inside of the third collision mixing plate 121 having the same structure as the second collision mixing plate 111 or the fourth and fifth collision mixing plates 131.
141 to obtain the same mixing effect as described above. The mixed liquid CDx obtained in a fully satisfactory state as described above exits the collision mixing plate, enters the discharge channel 149 in the body 100, and enters the atmosphere through the nozzle 150 connected thereto. It is discharged or ejected.

〔Effect of the invention〕

According to the method and apparatus of the present invention, the two liquids are mixed at 0.5 to 2
．． Mixing is performed most effectively in a mixing chamber with a small volume of 0 cc, and if necessary, by repeating this several times, the desired mixture can be achieved, and even precise minute mixing ratios can be set. It has no moving parts, has a simple structure, is easy to clean, has little heat loss, and can discharge or squirt high-temperature liquids.1 Improved quality.

This contributes to increased work efficiency.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the basic method of the present invention. Figure 2 is a developed method of the present invention. Figure 3 is an explanatory diagram of a head-on collision.
Figure 5 is an explanatory diagram of cross-collision Figure 5 is a cross-sectional view of the basic structure of the present invention Figure 6 is a cross-sectional view of the developed basic structure of the present invention Figure 7 is a cross-sectional view taken from "E" to "F'" in the same diagram as above Fig. 8 is a plan view of the stacked collision mixing plates in which the slit holes intersect. Fig. 9 is a plan view of the collision mixing plates in which the slit holes are stacked in parallel. Fig. 10 is the conventional static type. Mixing and discharging device Figure 11 is an explanation of the conventional stirring type mixing and discharging device.

Claims (1)

[Claims] 1. Two pressurized liquids A and B are passed through respective flow paths 1,
2, narrow these channels to form bottlenecks 3 and 4, thereby increasing the flow velocity, and facing the outlets of these bottlenecks to cause the outflow flows A_1 and B_1 from them to collide head-on, thereby Mix the above liquids A and B (AB_1
), and then the liquid is discharged or jetted from a nozzle or the like through a single channel 6. 2. Transfer the two pressurized liquids C and D to each channel 1.
1 and 12, and narrow these channels to create bottlenecks 13 and 14.
, thereby increasing the flow velocity, and by making the outlets of these bottlenecks face each other, the outflow flows from them C_1, D_1
collide head-on, thereby mixing both liquids C and D (C
D_1), then led to one flow path 16, which is then divided into two flow paths 17 and 18 and connected to flow paths 21 and 2, respectively.
2, and narrow these channels again to form bottlenecks 23 and 24, thereby increasing the flow rate and reducing the bottlenecks 23 and 24.
, 24 outlets facing each other, and the outflow from them CD_
1_a and CD_1_b are collided head-on, thereby remixing the mixed liquid CD_1 (CD_2), leading it to one flow path 25, repeating the same operation as described above again as necessary, and mixing it (CD_x). One channel 46
A method for mixing and discharging liquid, which comprises discharging or squirting liquid from a nozzle 47 through the liquid. 3. The "frontal collision" described in claims 1 and 2 is a "cross collision." 4. At the time of collision, the velocity of at least one outflow stream is 30 m/s
3. The method of mixing and discharging liquid according to claims 1 and 2, characterized in that the liquid discharge rate is equal to or higher than ec. 5. Claims 1 and 2 in which the "liquid" is "a dissolving coating material or an emulsion coating material, a main ingredient or curing agent in a two-component mixed curable resin, a catalyst, a solvent, etc." . 6. The method for mixing and discharging liquids according to claims 1 and 2, wherein at least one of the two types of liquids is a liquid heated above room temperature. 7. In the liquid discharge or jetting device, (1) two automatic opening/closing valves 51A and 51B for liquid are provided, and (2) channels 59A and 59B communicate with the outlet channels 58A and 58B of the valves, respectively. (3) The flow paths 59A and 59B are each provided with a collision mixing plate 6.
(4) The collision mixing plate 61 has a cylindrical shape and is divided into upper and lower parts, with a slit plate 62 in the upper part, and Receiving channels 64A and 64B are formed as through holes approximately symmetrically toward the outer periphery around the center point on the plate, and a blind hole is provided in the center of the lower surface of the plate as a part of the mixing chamber 67s, Also, a part 67s of the mixing chamber and the two receiving channels 64
A and 64B are provided with respective slits 65 and 66, and the lower part of the collision mixing plate serves as a mixing plate 63, with a hole having the same diameter as a part of the mixing chamber 67s serving as a mixing chamber 67; (5) a descending channel 68 in the collision mixing plate 61 is provided;
communicates with a discharge flow path 69 in the body 60 and further communicates with a nozzle 70.
be connected to etc. A liquid mixing discharge or jetting device characterized by comprising the following. 8. In the liquid discharge or ejection device, (1) two automatic opening/closing valves 91A and 91B for liquid are provided, and (2) two receiving flows are respectively communicated with the outlet channels 98A and 98B of the valves. (3) The channels 99A and 99B are two receiving channels 104A and 104B on the first collision mixing plate 101, respectively.
(4) The first collision mixing plate 101 is cylindrical, and the two receiving channels 104A and 104B are connected to each other.
are made as through holes almost symmetrically near the outer periphery, and a blind hole is provided in the center of the lower surface of the plate, which is a part of the mixing chamber 107s.
(5) slits 105 and 106 are provided between the part 107s of the mixing chamber and the two receiving channels 104A and 104B; (5) of the first collision mixing chamber; The part 107s coincides with the mixing chamber 107 on the upper surface of the second collision mixing plate 111, which is also cylindrical, and the mixing chamber communicates with one descending flow path 108 downward (in the direction of the centerline of the cylinder), In addition, the descending flow path branches to the left and right in the middle (113A, 113B), and the branch flow path further opens downward flow paths 114A, 114B toward the bottom. A blind hole is provided as a part 117s of the mixing chamber, and a blind hole is provided as a part 117s of the mixing chamber.
and the two above-mentioned inflow channels have respective slits 1.
(6) If necessary, , a third collision mixing plate 121 and a fourth collision mixing plate 131 having the same structure as the second collision mixing plate 111 in item (5) above,
. (8) The discharge flow path 149 in the body 100 is connected to the nozzle 1.
A liquid mixing/discharging or ejecting device characterized in that it is connected to a 50 or the like. 8. A liquid mixing and discharging or ejecting device characterized in that the directions of the slits on a plurality of stacked collision mixing plates are on the same straight line when viewed in plan. 9. The liquid mixing and discharging device according to claims 7 and 8, wherein the cross-sectional shape of the slit is triangular or square. 10. “Bottlehole” described in claims 1 and 2
and those in which the "slit" described in items 7 and 8 is a "pore".