JP6962112B2 - Mixing nozzle and dispenser - Google Patents

Description

The present invention relates to a mixing nozzle and a dispenser.

In materials such as paints, adhesives, and resins, new properties can be imparted by mixing two or more types of liquids. Discharge dispensers have been developed for the materials mixed in this way. For example, a mixed dispenser in which a main agent of a two-component curable resin and a curing agent are mixed and applied is widely used. The two-component curable resin has an advantage that properties such as curing time, which has a limited degree of freedom in design in the one-component type, can be freely adjusted according to the purpose. On the other hand, there is a problem that the properties as designed cannot be realized unless the two liquids are uniformly mixed at a predetermined mixing ratio. Therefore, a technique for performing uniform mixing with a mixing dispenser has been developed.

For example, Patent Document 1 discloses a dispenser that mixes and discharges two liquids using a static mixer (static mixer). In this technique, the number of elements in the mixing flow path constituting the static mixer is set to 30 to 80, so that the number of times the mixed liquid passes through the elements is increased and uniform mixing is realized.

Further, a dispenser using a dynamic mixer that dynamically mixes two liquids has also been developed. For example, in Patent Document 2, elements formed as screw blades in opposite directions are alternately provided in a mixing pipe by rotating and mixing around the axis of the mixing pipe, and a mixed liquid flowing out from the mixed liquid is separately provided. A method of discharging by a discharge means is disclosed. By rotating the screw blades, a uniform mixed liquid can be obtained.

Japanese Unexamined Patent Publication No. 2001-11325 Japanese Patent Application Laid-Open No. 2009-511269

However, the technique of Patent Document 1 has a problem that the length of the mixing nozzle becomes long while the uniformity of mixing is improved by increasing the number of elements in the mixing flow path. The longer the mixing nozzle, the more material remains in the mixing nozzle that cannot be used. Further, there is a problem that the resistance in the nozzle increases, it becomes difficult to control the discharge amount, the discharge response becomes poor, and the variation in discharge becomes large.

Further, in a dispenser using a dynamic mixer as in Patent Document 2, it is necessary to provide a discharge means separately from the mixer, which causes a problem that the device becomes complicated and large.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a mixing nozzle that performs uniform mixing with a small volume.

In order to solve the above problems, the mixing nozzle has a tubular main body, a discharge port provided at one end of the main body, an inflow port provided at the other end of the main body, and the inside of the main body between the discharge port and the inflow port. It has a mixing flow path provided in. Further, it has a reciprocating flow generating means for reciprocating the two or more kinds of mixed liquids introduced into the main body relative to the mixing flow path in the axial direction of the main body. Since the mixed liquid repeatedly passes through the mixing flow path due to the reciprocating flow, two or more kinds of liquids can be uniformly mixed even if a mixing flow path composed of a small number of elements is used. Therefore, the length of the mixing nozzle can be shortened, and the dead volume that cannot be used for discharge can be reduced. In addition, the response of the discharge control is improved, and the precise control of the discharge amount becomes easy.

The effect of the present invention is that it is possible to provide a mixing nozzle that performs uniform mixing with a small volume.

It is a block diagram which shows the mixing nozzle of 1st Embodiment. It is sectional drawing which shows the dispenser of 2nd Embodiment. It is sectional drawing which shows the operation of the mixing nozzle of 2nd Embodiment. It is sectional drawing which shows the operation of the mixing nozzle of 3rd Embodiment. It is sectional drawing which shows the operation of the mixing nozzle of 4th Embodiment. It is sectional drawing which shows an example of the lid of 4th Embodiment. It is a side view which shows the dispenser of 5th Embodiment. It is a side view which shows the dispenser of 6th Embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, although the embodiments described below have technically preferable limitations for carrying out the present invention, the scope of the invention is not limited to the following. Note that similar components in each drawing may be numbered the same and description may be omitted.

(First Embodiment)
FIG. 1 is a block diagram showing a mixing nozzle 10 of the present embodiment. The mixing nozzle 10 includes a tubular main body 11, a discharge port 12 provided at one end of the main body 11, an inflow port 13 provided at the other end of the main body 11, and a main body 11 between the discharge port 12 and the inflow port 13. It has a mixing flow path 14 provided inside. Further, it has a reciprocating flow generating means 15 that reciprocates the liquid introduced into the main body 11 relative to the mixing flow path 14 in the stretching direction of the main body 11.

The mixing flow path 14 changes the flow of the liquid to mix two or more kinds of liquids. The mixing flow path 14 is configured by, for example, arranging a plurality of elements obtained by twisting a rectangular plate so that the twisting directions are alternately opposite to each other. When a liquid passes through this element group, flow division, inversion, merging, etc. occur, and two or more kinds of liquids are mixed. The mixing flow path 14 is also generally called a static mixer.

By the way, due to such a mixing principle, it is difficult to perform uniform mixing without increasing the number of elements in a normal mixing nozzle that passes through the mixing flow path only once. On the other hand, in the present embodiment, since the mixed liquid repeatedly passes through the elements by the reciprocating motion, uniform mixing can be performed with a small number of elements. Therefore, the total length of the mixing nozzle 10 can be shortened, and the dead volume that cannot be used for ejection can be reduced.

(Second Embodiment)
FIG. 2 is a partial cross-sectional view showing the mixing nozzle 100 of the second embodiment and the dispenser 1000 using the mixing nozzle. The mixing nozzle 100 has a tubular main body 110, a discharge port 120 located at one end of the main body, and an inflow port 130 located at the opposite end of the discharge port 120. In addition, it has a mixing flow path 140 arranged inside the middle stage of the main body 110. A discharge side bellows 111 is provided between the mixing flow path 140 and the discharge port 120, and an inflow side bellows 112 is provided between the mixing flow path 140 and the inflow port 130. A mixing flow path reciprocating mechanism 150 is fixed to the outer wall of the portion of the main body 110 where the mixing flow path 140 is arranged so that the portion of the main body 110 can be reciprocated in the axial direction of the main body 110. Further, the discharge port 120 can be opened and closed by the lid 160. The lid 160 is driven by the lid drive mechanism 161 to open and close the discharge port 120.

The aggregation block 200 is liquidtightly connected to the inflow port 130 by a fixture 210. The aggregation block 200 includes a first flow path 201 that circulates the first liquid supplied from the first liquid supply mechanism 310, and a second flow path 202 that circulates the second liquid supplied from the second liquid supply mechanism 320. Has. Then, the first flow path 201 and the second flow path 202 are integrated and communicated with the inflow port 130.

With the above configuration, the discharge port 120 is closed with the lid 160 and the mixing flow path reciprocating mechanism 150 is operated, so that the first liquid and the second liquid can be efficiently mixed. FIG. 3 is a cross-sectional view for explaining the above-mentioned mixing operation. Although not shown, it is assumed that the inflow port 130 is closed. FIG. 3A shows a state in which the mixing flow path reciprocating mechanism 150 moves the mixing flow path 140 toward the discharge port 120. At this time, the volume of the bellows 112 on the inflow port side is large, and the volume of the bellows 111 on the discharge port side is small. When the mixing flow path 140 is moved from this state to the inlet side as shown in FIG. 3B, the volume of the inlet-side bellows 112 decreases and the volume of the discharge port-side bellows 111 increases. At that time, the mixed liquid passes through the mixing flow path 140 and moves to the discharge port 120 side. By repeating the operations of FIGS. 3A and 3B, the first liquid and the second liquid are uniformly mixed. Then, after performing the reciprocating motion a predetermined number of times, the lid 160 is released, pressure is applied from the supply side, and the mixed liquid is discharged from the discharge port 120.

As described above, according to the present embodiment, the two liquids can be uniformly mixed and discharged.

(Third Embodiment)
Instead of the bellows, a piston-type mixing flow path that is liquid-tightly connected by a seal may reciprocate. FIG. 4 is a cross-sectional view showing the operation of such a mixing nozzle. The mixing flow path 140 is fixed to the inner 113. The inner 113 reciprocates between the discharge side outer 114 and the inflow side outer 115. FIG. 4A shows a state in which the inner 113 has moved to the discharge port 120 side, and FIG. 4B shows a state in which the inner 113 has moved to the inflow side. As described above, even if the reciprocating mechanism sealed with a seal is used, it is possible to construct a dispenser in which the two liquids are uniformly mixed and discharged.

(Fourth Embodiment)
As described in the third and fourth embodiments, the volume on the discharge port side and the volume on the inflow port side of the mixing flow path arranged in the middle stage of the nozzle body are alternately increased or decreased while the discharge port is closed. As a result, mixing can be performed. In the present embodiment, a nozzle body made of a flexible material is used and deformed to generate a flow passing through the mixing flow path.

FIG. 5 is a cross-sectional view showing an example of such a mixing nozzle. The mixing nozzle has a main body 110a made of a flexible material and a mixing flow path 140 arranged in the middle of the main body 110a. Further, a discharge side grip bar 152 that grips the outside of the main body 110a on the discharge port 120 side of the mixing flow path 140, and an inflow side grip bar 153 that grips the outside of the main body 110a on the inflow port 130 side of the mixing flow path 140. Have. As the material of the main body 110a, for example, polypropylene, silicon, rubber or the like can be used, but a material that does not react with the mixed solution to be used is selected.

The liquids are mixed by alternately alternating the state of FIG. 5 (a) and the state of FIG. 5 (b). First, as shown in FIG. 5A, with the mixing nozzle filled with the mixing material, the lid 160 is closed, the interval between the discharge side grip bars 152 is narrowed, and the discharge port 120 side of the mixing flow path 140 is narrowed. Reduce the volume. At this time, the inflow side grip bar 153 is kept in a state where no pressure is applied to the main body 110a. Next, as shown in FIG. 5B, the discharge side grip bar 152 is opened to increase the volume of the mixing flow path 140 on the discharge port 120 side, and the inflow side grip bar 153 is closed to close the inflow port of the mixing flow path 140. Reduce the volume on the 130 side. By changing from the state of FIG. 5 (a) to the state of FIG. 5 (b), a flow of the mixed liquid flowing through the mixing flow path 140 to the discharge side is generated. By alternately creating the states shown in FIGS. 5A and 5B, the mixed liquid can be uniformly mixed. Then, after mixing a predetermined number of times, the lid 160 is opened, pressure is applied from the inflow port 130 side, and the mixed liquid is discharged.

The shape of the lid 160 may be adjusted to match the shape of the discharge port 120 so that the liquid-tight state is maintained. For example, a lid 160a having a groove 160b as shown in FIG. 6A can be used so that the periphery of the discharge port 120 is surrounded as shown in FIG. 6B. Further, as shown in FIG. 6 (c), a lid 160c having a plug 160d that enters the inside of the discharge port 120 may be used, and the plug 160d may be fitted to the discharge port 120 as shown in FIG. 6 (d). ..

(Fifth Embodiment)
The liquid flow reciprocating in the mixing flow path 140 can also be created by reciprocating the mixing flow path 140 in the axial direction of the mixing nozzle. FIG. 7 is a cross-sectional view showing an example of a dispenser 1100 using a mixing nozzle having such a function. The mixing flow path 140 is fixed to the arm 155. The arm 155 can be driven up and down (in the axial direction of the nozzle) by the up and down mechanism 154. By reciprocating the mixing flow path 140 together with the arm 155, the mixed liquid can be uniformly mixed.

(Sixth Embodiment)
FIG. 8 is a cross-sectional view showing the dispenser of the sixth embodiment. In the dispenser of the present embodiment, the mixed liquid is reciprocally flowed to the mixing flow path 140 by controlling the discharge pressure without using a mechanical drive mechanism.

First, as shown in FIG. 8A, the first liquid and the second liquid are supplied from the first liquid supply mechanism 310 and the second liquid supply mechanism 320, respectively, and the mixing liquid 400 is filled in the mixing nozzle. At this time, the mixed liquid 400 exists outside the tip of the aggregation block 200 and does not enter the inside of the first flow path 201 and the second flow path 202. Here, as shown in FIG. 8B, a predetermined negative pressure is generated from each of the first liquid supply mechanism 310 and the second liquid supply mechanism 320, and a part of the mixed liquid 400 is supplied to the first flow path on the supply side. It is drawn into 201 and the second flow path 202. A space where the air 500 exists is created inside the discharge port side 120 of the nozzle. By this operation, a flow flowing through the mixing flow path 140 toward the inflow port 130 is generated. Next, the pressure is reversed, a predetermined positive pressure is applied from the first liquid supply mechanism 310 and the second liquid supply mechanism 320 to move the tip of the mixed liquid 400 to the edge of the discharge port 120, and FIG. 8 (a) shows. Return to the state. At this time, a flow of the mixed liquid flowing through the mixing flow path 140 toward the discharge port 120 is generated. By repeating the above operation, a flow of the mixed liquid 400 reciprocating in the mixing flow path 140 can be generated, and the mixed liquid 400 can be uniformly mixed.

The present invention has been described above using the above-described embodiment as a model example. However, the present invention is not limited to the above embodiment. That is, the present invention can apply various aspects that can be understood by those skilled in the art within the scope of the present invention.

10,100 Mixing nozzle 11,110 Main body 12,120 Discharge port 13,130 Inflow port 14,140 Mixing flow path 15 Reciprocating flow generating means 310 First liquid supply mechanism 320 Second liquid supply mechanism 150 Mixing flow path reciprocating mechanism 160 lid

Claims (9)

An inflow port for the first liquid and the second liquid to flow in,
A discharge port for discharging a mixed liquid of the first liquid and the second liquid, and
A tubular body that connects the inflow port and the discharge port,
A mixing flow path that is arranged in the main body and mixes the liquid that flows around itself,
A reciprocating flow generating means for causing the mixed liquid to reciprocate relative to the mixing flow path in the axial direction of the main body.
A lid that opens and closes the discharge port ,
Have,
The reciprocating flow generating means
A first volume changing means for changing the volume from the mixing flow path to the inflow port,
A second volume changing means for changing the volume from the mixing flow path to the discharge port,
Mixed-nozzle further comprising a. The reciprocating flow generating means
The mixing nozzle according to claim 1 , further comprising a reciprocating motion generating means for reciprocating the mixing flow path in the axial direction of the main body. A first bellows portion provided on the inlet side of the mixing flow path and
A second bellows portion provided on the discharge port side of the mixing flow path and
Wherein a mixing channel that is fixed in said body between said first bellows unit and the second bellows portion,
The mixing nozzle according to claim 2 , further comprising a reciprocating driving means for reciprocating a portion of the main body to which the mixing flow path is fixed in the axial direction of the main body. A first tubular portion provided on the inlet side of the mixing flow path and
A second tubular portion provided on the discharge port side of the mixing flow path and
Wherein disposed between the first tubular portion and the second tubular portion, between said second tubular portion and said first tubular portion in liquid-tight manner, said first tube-shaped portion and a third tubular portion which is movable in the axial direction of the second tube-shaped portion,
With the mixing flow path fixed inside the third tubular portion,
Mixing nozzle of claim 2, characterized in that it comprises a reciprocating drive means for reciprocating said third tubular portion in the axial direction of the first tube-shaped portion and the second tube-shaped portion. Discharge-side main body constriction means for reducing the outer shape of the main body on the discharge port side of the mixing flow path, and
The mixing nozzle according to claim 1 , wherein the main body has a discharge side main body constricting means for reducing the outer shape of the inflow port side of the mixing flow path. The mixing nozzle according to claim 1, further comprising a vertical mechanism for reciprocating the mixing flow path in the axial direction of the main body. The mixing nozzle according to any one of claims 1 to 6 and
A first liquid supply mechanism for supplying the first liquid to the inlet of the mixing nozzle,
Dispenser and having a second liquid supply mechanism for supplying said second liquid to said inlet of said mixing nozzle. The inlet and the outlet and the inlet and the the discharge port have a tubular body for connecting mixed-nozzle mixing channel disposed therein, the first liquid and the second to the inlet Inflow with liquid,
From said mixing channel to change the volume up to the inlet, said from the mixing channel to change the volume up to the discharge port, to said body inside and arranged said mixing channel, the axial direction of the body The mixed liquid of the first liquid and the second liquid is relatively reciprocated to flow.
A method for discharging a mixed liquid, which comprises discharging the mixed liquid from the discharge port. Open and close the discharge port
By changing the volume from the mixing flow path to the inflow port,
The method for discharging a mixed liquid according to claim 8 , wherein the volume from the mixing flow path to the discharge port is changed.

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