JP2016098481A - Filler injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler injection device capable of efficiently injecting a large amount of a mixture in a stable state at an adjusted injection amount, and accurately mixing liquid raw materials at a predetermined mixing ratio prior to injection.SOLUTION: A filler injection device includes: a plurality of cylinder containers 1, 2 holding different types of liquid; and a plurality of plungers 3, 4 moved in an axial direction inside the cylinder containers, for sending out the liquid inside each of the cylinder containers. The plunger is driven by a pressure device 5, sends out the liquid from the plurality of cylinder containers, then mixes the liquid at a mixing and injection part 6 for injecting the liquid from a nozzle 28. The plurality of plungers are operated such that a shifting amount in the axial direction inside the plurality of cylinder containers is the same for all the plungers, and a ratio of cross-section area of the plungers coincides with a mixing ratio of the plurality of types of liquid. The mixing and injection part has a flow rate adjusting valve 27 disposed on a duct in which one type of liquid flows before mixing. The sole flow adjustment valve is operated for adjusting a flow rate at a time of injection.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a filler injection device used for mixing and injecting fillers made of a plurality of types of liquid materials into joints, cracks, voids and the like.

  Fillers that use a plurality of liquids as raw materials and mix them immediately before injection are widely used. The mixed filler is a material in which a phenomenon such as curing occurs due to a reaction of substances contained in a plurality of liquids and a predetermined property is obtained. For example, there are synthetic resin adhesives and fillers mixed with two liquids such as epoxy resins, foams made of synthetic resins, fillers for ground improvement, asphalt emulsions used in combination with a decomposition agent, and the like.

As an apparatus capable of mixing and injecting a plurality of liquids as described above, for example, there is one described in Patent Document 1.
This apparatus includes a liquid chamber for storing two liquids in a separated state, and a nozzle for mixing and ejecting the liquids stored in these liquid chambers, and these are cartridges. The operator holds the main body with the cartridge and pushes out liquid from the cartridge to perform injection. The liquid is pushed out by driving the motor, and the operator controls the driving of the motor by turning the switch on and off.

  On the other hand, the apparatus described in Patent Document 2 includes two pressure feeding tanks that separate and store two liquids and each feeds the liquid by pressurization. Each liquid sent out from the pressure tank is led to a hand gun by a hose. The hand gun can be held by an operator to perform an injection operation, and the two liquids are mixed and ejected by a nozzle provided at the tip. An electromagnetic valve is provided in each of the conduits until the two liquids are mixed, and the valve can be adjusted by an operator holding the hand gun.

Japanese Utility Model 5-80563 Japanese Utility Model Sho 55-122873

However, in the apparatus described in Patent Document 1, the container and the nozzle that store the liquid that is the raw material form a cartridge, and it is necessary to replace the cartridge each time the liquid stored in one cartridge is ejected. There is. In addition, since the injection amount is controlled by turning on / off the motor, it is difficult to inject a large amount of liquid mixture in a stable state continuously.
On the other hand, the apparatus described in Patent Document 2 can increase the amount of liquid stored in the pressure-feed tank and is suitable for injecting a large amount of liquid. However, the injection amount is adjusted by providing a valve for adjusting the flow rate in each flow path until the two kinds of liquids sent out from the tank are mixed by the nozzle, and the mixing ratio of the two kinds of liquids Is difficult to adjust accurately. In particular, it becomes difficult to set accurately when the mixing ratio increases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to perform injection of a large amount of a mixed liquid in a stable state with an injection amount being adjusted, and to preliminarily feed a liquid of a raw material. It is an object of the present invention to provide a filler injection device capable of accurately mixing and injecting at a predetermined mixing ratio.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a plurality of cylinder containers each containing different types of liquid, and an axial operation in the cylinder container to send out the liquid in each cylinder container A plurality of pistons or plungers, a pressurizing device that drives the pistons or plungers, and a mixing injection unit that combines the liquids sent from the plurality of cylinder containers, mixes them, and injects them from the nozzles. The plurality of pistons or plungers operate so that the amount of movement in the axial direction is the same in the plurality of cylinder containers, and the cylinder container has the same amount of movement of the plurality of pistons or plungers. Each discharges an amount of liquid that matches the predetermined mixing ratio of multiple liquids. The mixing injection unit has a flow rate adjusting valve in a conduit through which one liquid before joining, and a flow rate injection is adjusted by operating a single flow rate adjusting valve. Providing equipment.

In the filler injection device, the plurality of pistons or plungers operate so that the movement amounts in the axial direction are the same in the plurality of cylinder containers. As a result, an amount of liquid that matches a predetermined liquid mixing ratio is discharged from the cylinder container. These liquids are mixed and ejected by the mixing and ejecting unit. At this time, the injection amount is adjusted by adjusting a flow rate adjusting valve provided in one liquid conduit before joining, and the amount of movement of the piston or plunger in the cylinder container that stores the liquid is adjusted. Is regulated. As a result, the amount of liquid discharged from the cylinder container is adjusted even if the flow rate of other liquid conduits is not adjusted directly by a valve, etc., and the mixing ratio of the liquid mixture injected from the mixing injection unit is accurately constant. Maintained.
Further, since the piston or plunger is driven by the pressurizing device and the injection amount can be adjusted by the flow rate adjusting valve, a desired amount of the mixed liquid can be continuously and stably injected.

  According to a second aspect of the present invention, there is provided the filler injection device according to the first aspect, wherein a supply hopper that supplies liquid into the cylinder container via a supply valve, and the mixed injection from the cylinder container via a discharge valve A discharge pipe that sends out liquid to the section, and the supply valve and the discharge valve are opened and closed by an external driving force.

In this filling material injection device, after the liquid in the cylinder container is discharged by driving the piston or plunger, the discharge valve is closed, the supply valve is opened, and the piston or plunger is driven to move backward from the supply hopper. The liquid that is the raw material can be replenished. Therefore, it is possible to efficiently inject a large amount of liquid mixture.
The discharge valve and the supply valve are opened and closed by an external driving force. When starting the discharge of the liquid, the supply valve is completely closed, and the discharge is stopped and the supply hopper is stopped. When the introduction of the liquid is started, the discharge valve can be completely closed. Therefore, the back flow of the liquid is prevented and the mixing ratio of the liquid is accurately maintained.

  According to a third aspect of the present invention, in the filler injection device according to the first or second aspect, the plurality of pistons or plungers are integrally connected, and a substantially constant pressure is continuously applied to the connection body. It shall be driven by a pressurizing device.

  In this filling material injection device, the connecting body of a plurality of integrated pistons or plungers is pressurized at a substantially constant pressure, so that there is little fluctuation in pressure in the cylinder container, and liquid discharge is stable. Can be done.

  According to a fourth aspect of the present invention, in the filler injection device according to any one of the first to third aspects, the cross-sectional area ratio inside the plurality of cylinder containers or the cross-sectional area ratio of the plurality of plungers is It is assumed that it matches the mixing ratio of the plurality of liquids.

  In this filling material injection device, when the cross-sectional area inside the cylinder container is a liquid mixing ratio, a predetermined mixing ratio is obtained by driving the piston in close contact with the inner peripheral surface of the cylinder container in the axial direction. A corresponding amount of liquid is discharged. Similarly, when a plunger whose cross-sectional area ratio corresponds to a predetermined liquid mixing ratio is pushed into the cylinder container, an amount of liquid corresponding to the predetermined mixing ratio is discharged. The

  As described above, in the filler injection device according to the present invention, a large amount of liquid mixture can be injected while the injection amount is adjusted and stable. The mixed liquid to be injected can be accurately mixed and injected with the liquid of the raw material at a predetermined mixing ratio.

It is a schematic block diagram of the filler injection apparatus which is one Embodiment of this invention. It is the schematic side view and schematic plan view which show the cylinder container of the filler injection apparatus shown in FIG. 1, a plunger, the pressurization apparatus which drives a plunger, and a supply hopper. It is a schematic sectional drawing of a cylinder container, a plunger, and a pressurization apparatus. It is a schematic plan view of a mixing injection part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a filler injection device according to an embodiment of the present invention. FIG. 2 is a schematic side view and a schematic plan view showing a cylinder container, a plunger, a pressurizing device for driving the plunger, and a supply hopper of the filler injection device.
The filling material injection device includes two cylinder containers 1 and 2 that store different kinds of liquids, and two plungers 3 that operate in the axial direction in these cylinder containers and feed out the liquid in each cylinder container. 4, a pressurizing device 5 that drives these plungers, a mixed injection unit 6 that mixes liquids sent out from the cylinder containers, mixes them, and injects them from the nozzles, and discharge valves from the cylinder containers 1 and 2. The two discharge pipes 9 and 10 for guiding the liquid discharged through 7 and 8 to the mixing and injection unit 6 and the cylinder containers 1 and 2 supply the liquid to the cylinder containers 1 and 2 via the supply valves 11 and 12, respectively. And two supply hoppers 13 and 14 to be supplied.

  The cylinder container accommodates two different liquids that the first cylinder container 1 and the second cylinder container 2 mix at the time of injection, and the cylindrical container body has an inner diameter. It is different. These container main body portions are arranged so that the axes thereof are parallel to each other, and the first plunger 3 and the second plunger 4 are respectively inserted into the container main body portion from one end portion. These plungers 3 and 4 can be moved back and forth in the axial direction in a state where the plunger 3 and 4 are sealed from the container main body 1a as shown in FIG. In addition, a first discharge pipe 9 and a second discharge pipe 10 are connected to the opposite side of the container main body 1 a via a first discharge valve 7 and a second discharge valve 8. In addition, a first supply hopper 13 is connected to the first cylinder container 1 via the first supply valve 11 and the second supply valve 12 near the end where the discharge pipes 9 and 10 are connected. A second supply hopper 14 is connected to the second cylinder container 2.

The first plunger 3 and the second plunger 4 are cylindrical members having different diameters, and the ratio of these cross-sectional areas matches the predetermined mixing ratio of the two liquids. Used. That is, for example, when the mixing ratio of the liquid supplied from the first cylinder container 1 and the liquid supplied from the second cylinder container 2 is 17: 1, the ratio of the cross-sectional areas of these plungers 3 and 4 Is 17: 1.
These plungers 3 and 4 are connected at their rear ends to each other, and a single pressurizing device 5 is connected to these connecting bodies 15 to form an integrated connecting body 15 in the axial direction of the cylinder containers 1 and 2. It is intended to drive. Accordingly, the two plungers 3 and 4 always have substantially the same amount of movement in the axial direction in the two cylinder containers 1 and 2. The liquid in the cylinder containers 1 and 2 is discharged when the plungers 3 and 4 are pushed into the cylinder containers 1 and 2, and the discharge amount is the volume of the plungers 3 and 4 pushed into the cylinder containers 1 and 2. It corresponds to. Since the amount of movement in the axial direction of the plungers 3 and 4 pushed into the two cylinder containers 1 and 2 is always equal, the ratio of the amount of liquid discharged from the two cylinder containers 1 and 2 is This corresponds to the ratio of the cross-sectional areas of 3 and 4.

The pressurizing device 5 includes a cylinder portion 5a and an air compression device (not shown) that supplies compressed air to the cylinder portion 5a.
As shown in FIG. 3, the cylinder part 5 a includes a piston 5 b inside, and compressed air is selectively supplied from the air compressor to the front side 17 and the rear side 16 from the piston 5 b in the cylinder. It has become. The rod 5c continuous with the piston 5b is connected to a connecting body 15 of the first plunger 3 and the second plunger 4. Accordingly, the compressed air is supplied to the rear side 16 in the cylinder portion 5 a to pressurize the piston 5 b to the front side, and the cylinder container 1 against both the first plunger 1 and the second plunger 2. , 2 is applied in the direction of pushing in. Further, by supplying compressed air to the front side 17 from the piston 5b in the cylinder part 5a, the piston 5b is pressed rearward, and the first plunger 3 and the second plunger 4 can be moved backward. Is.
The air compressor can adjust the air pressure when supplying compressed air to the cylinder portion 5a, and can control the piston to be pushed forward while maintaining a substantially constant pressure. As a result, a substantially constant pressure is applied to the liquid stored in the first cylinder container 1 or the second cylinder container 2 and the liquid can be sent out through the discharge valves 7 and 8.

  The discharge pipe includes a first discharge pipe 9 and a second discharge pipe 10 having a smaller inner diameter than the first discharge pipe 9. The first discharge pipe 9 is connected to the first cylinder via the first discharge valve 7. Connected to the container 1. The second discharge pipe 10 is connected to the second cylinder container 2 via the second discharge valve 8. As the first discharge valve 7 and the second discharge valve 8, various types that can open and close the pipeline can be used, but those that are opened and closed by an external driving force are desirable. For example, those that are manually opened and closed by an operator, those that are opened and closed by driving a motor, and those that are opened and closed by a solenoid can be used. Reference numeral 18 in FIG. 2 indicates a drive device for the discharge valve 7. As the first discharge valve and the second discharge valve, those that are opened and closed by the flow of the liquid itself to be discharged can be used. May occur.

  On the other hand, a first opening / closing valve 20 and a first coupler 22 detachably connected to the first conduit 24 of the mixed injection part are provided at the tip of the first discharge pipe 9, and the second Similarly, a second opening / closing valve 21 and a second coupler 23 are provided at the tip of the discharge pipe 10. The first on-off valve 20 and the second on-off valve 21 are connected to the discharge pipes 9 and 10 when the first coupler 22 and the second coupler 23 are removed from the conduits 24 and 25 of the mixing injection unit 6. The liquid can be closed so as not to leak, and is opened when the liquid is mixed and ejected.

  As shown in FIG. 4, the mixed injection unit 6 includes a first conduit 24 to which the first discharge pipe 9 is connected by a first coupler 22, and a second discharge pipe 10 by a second coupler 23. The second conduit 25 to be connected, the joining portion 26 for joining these two conduits, and the upstream side of the joining portion of the first conduit 24 to adjust the amount of liquid flowing through the first conduit 24 It has a flow rate adjusting valve 27 and a nozzle 28 that mixes and injects the liquid merged at the merge section.

The first conduit 24 and the second conduit 25 have different inner diameters, and these inner diameters correspond to the difference in the amount of liquid delivered from the two cylinder containers 1 and 2.
The flow rate adjusting valve 27 arbitrarily sets an amount for limiting the cross-sectional area of the flow path between a state where the cross-sectional area of the flow path of the first conduit 24 is completely shielded and a state where the cross-sectional area is fully opened. It is something that can be done. Thereby, the flow volume of the 1st fluid pressurized by the pressurization apparatus 5 and sent out from the 1st cylinder container 1 can be adjusted.

  The nozzle 28 is a tubular member, and the tip 28a has a reduced inner diameter so that liquid can be reliably injected into narrow places such as joints and cracks. In addition, the tubular portion 28b up to the tip can be provided with a member that regulates the flow path in the tubular member, and the one in which the flow path bends or the flow area changes. By setting the flow paths in this way, the combined liquids are mixed so as to be in a nearly uniform state.

  The supply hopper includes a first supply hopper 13 that stores a first liquid and a second supply hopper 14 that stores a second liquid, and according to a predetermined mixing ratio of these liquids. The capacity is different. The first supply hopper 13 is connected to the upper part on the front side of the first cylinder container 1 via the first supply valve 11. The second supply hopper 14 is connected to the front upper portion of the second cylinder container 2 via the second supply valve 12. The first supply valve 11 and the second supply valve 12 may be the same as the discharge valve. Reference numeral 19 in FIG. 2 indicates a drive device for the supply valve 11.

Next, the operation of the filler injection device will be described.
The first liquid and the second liquid before mixing are supplied to the first supply hopper 13 and the second supply hopper 14, respectively. Then, the first supply valve 11 and the second supply valve 12 are opened with the first discharge valve 7 and the second discharge valve 8 closed, and the first plunger 3 and the second plunger 4 are opened. Retreat. As a result, the first liquid in the first supply hopper 13 and the second liquid in the second supply hopper 14 are sucked and supplied to the first cylinder container 1 and the second cylinder container 2. Thereafter, the first supply valve 11 and the second supply valve 12 are closed, the first discharge valve 7 and the second discharge valve 8 are opened to drive the pressurizing device 5, and the first plunger 3 and The second plunger 4 is pushed forward and pushed into the first cylinder container 1 and the second cylinder container 2. As a result, the liquid in the first cylinder container 1 and the second cylinder container 2 is sent out to the first discharge pipe 9 and the second discharge pipe 10, and the first conduit 24 and the first pipe 24 of the mixing injection unit 6 are sent. It merges at the junction 26 via the two conduits 25. At this time, the first liquid passes through the flow rate adjusting valve 27 when passing through the first conduit 24, and the flow rate is adjusted by regulating the flow path by the flow rate adjusting valve 27. Accordingly, a substantially constant pressure is applied from the pressurizing device 5 and the first plunger 3 is pushed into the first cylinder container 1, but the amount of liquid flowing from the first discharge pipe 9 to the junction 26 is restricted. Thus, the amount by which the first plunger 3 moves forward of the first cylinder container 1 is regulated according to the flow rate of the first liquid. Since the second plunger 4 is integrally connected to the first plunger 3 and the movement amounts in the axial direction of the cylinder containers 1 and 2 are the same, the second plunger container 2 is connected to the second discharge pipe 10. The amount of liquid discharged is the ratio of the cross-sectional areas of the first plunger 3 and the second plunger 4. That is, the second liquid is in the second liquid so that the ratio of the cross-sectional areas of the first plunger 3 and the second plunger 4 corresponds to the regulated flow rate of the first liquid, that is, a predetermined mixing ratio. 2 is discharged from the cylinder container 2. These liquids merge at the mixing and ejecting unit 6, are sufficiently mixed, and are ejected from the nozzle 28. Therefore, by operating only the flow rate adjusting valve 27 provided in the first conduit 24, the mixing ratio of the first liquid and the second liquid can be maintained at a predetermined ratio and the flow rate can be adjusted and ejected. it can. Then, it becomes possible to continuously fill the mixed liquid into joints, cracks, etc. with the injection amount adjusted.

  When the first plunger 3 and the second plunger 4 reach the front side in the cylinder containers 1 and 2 by injecting the mixed liquid, the first discharge valve 7 and the second discharge valve 8 are closed. The first supply valve 11 and the second supply valve 12 are opened, and the plungers 3 and 4 are moved backward. As a result, the liquid can be supplied to the cylinder containers 1 and 2, and the mixed liquid filling operation can be performed by repeating these steps.

  The filler injection device described above can be widely used for fillers that are mixed and filled with a main agent and a curing agent. From fillers made of asphalt materials, fillers made of resin materials, and cement materials. It can be used for filling a filler or the like. In particular, in the case of asphalt materials filled at room temperature, the mixing ratio of the main agent and the curing agent increases, but by using the filler injection device according to the present invention, it is possible to inject while maintaining the mixing ratio accurately. it can. And asphalt-based materials, it is required to inject a large amount of material for filling to repair cracks in the pavement and filling of joints, but a large amount of filler can be efficiently added while maintaining a constant flow rate. Injecting can be performed efficiently.

  The filler injection device of the present invention is not limited to the above embodiment, and can be implemented in various modes within the scope of the present invention. For example, in the above embodiment, the mechanism for discharging the liquid from the cylinder container is such that the plunger is pushed into the cylinder container, but instead, the piston in the cylinder container may be driven. Good. At this time, the cross-sectional area ratio in the plurality of cylinder containers is assumed to match the mixing ratio of the liquid. Then, the pistons that are in close contact with the inner peripheral surfaces of the cylinder containers move in the axial direction by the same amount in the plurality of cylinder containers, whereby the liquid corresponding to the mixing ratio is discharged from each cylinder container.

  Moreover, in the said embodiment, although the pressurization apparatus used air pressure, it is not limited to this, The apparatus which has mechanisms other than this can also be used. The structure of the mixed injection part can also be appropriately designed within the scope of the present invention. On the other hand, the liquid to be mixed and ejected is a liquid in which two liquids are mixed in the above embodiment, but may be a liquid in which three or more liquids are mixed and ejected. In this case, three cylinder containers and three plungers or pistons can be used.

1: first cylinder container, 2: second cylinder container, 3: first plunger, 4: second plunger, 5: pressurizer, 5a: cylinder part of pressurizer, 5b: piston , 5c: rod, 6: mixing injection section, 7: first discharge valve, 8: second discharge valve, 9: first discharge pipe, 10: second discharge pipe, 11: first supply valve , 12: second supply valve, 13: first supply hopper, 14: second supply hopper, 15: coupling body, 16: rear side in the cylinder part, 17: front side in the cylinder part, 18: discharge valve 19: supply valve drive device, 20: first on-off valve, 21: second on-off valve, 22: first coupler, 23: second coupler, 24: first conduit, 25 : Second conduit, 26: junction, 27: flow rate adjustment bar Lub, 28: Nozzle, 28a: Nozzle tip, 28b: Tubular tubular portion

Claims (4)

A plurality of cylinder containers each containing a different type of liquid;
A plurality of pistons or plungers operating in the axial direction in the cylinder containers and delivering liquid in the respective cylinder containers;
A pressurizing device for driving the piston or plunger;
A mixing injection unit for combining the liquids sent out from the plurality of cylinder containers, mixing and injecting from the nozzle,
The plurality of pistons or plungers operate so as to have the same amount of axial movement in the plurality of cylinder containers,
The cylinder container discharges a quantity of liquid that matches a predetermined mixing ratio of a plurality of liquids by the same amount of movement of the plurality of pistons or plungers,
The mixing and injection unit has a flow rate adjusting valve in a conduit through which one liquid before merging flows.
A filler injection device characterized in that a flow rate during injection is adjusted by operating a single flow rate adjusting valve. A supply hopper for supplying liquid into the cylinder container via a supply valve;
A discharge pipe for sending liquid from the cylinder container to the mixed injection part via a discharge valve;
The filler injection device according to claim 1, wherein the supply valve and the discharge valve are opened and closed by an external driving force.   The plurality of pistons or plungers are connected together and driven by a pressurizing device that continuously applies a substantially constant pressure to the connecting body. The filler injection device as described.   The cross-sectional area ratio inside a plurality of the cylinder containers or the cross-sectional area ratio of the plurality of plungers matches a mixing ratio of the plurality of liquids. The filler injection device described in 1.

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