Injection device and injection method for additive agent

Abstract

To provide an injection device and injection method for an additive agent capable of accurately and continuously injecting a minute amount of additive agent into a small amount of undiluted solution.SOLUTION: In order to continuously inject an additive agent so that a concentration after injection of an additive agent is a preset value, an injection device for an additive agent is composed of: a flow meter for fluid into which an additive agent is to be injected; a piston for reliably injecting a set amount of additive agent; a cylinder with a check valve installed on its upper part; a cam with a lift corresponding to an injection amount of the additive agent; and a rotation mechanism for the cam, and the injection device for an additive agent is composed of a control device capable of setting an injection amount of an additive agent corresponding to a flow rate of fluid into which an additive agent is to be injected to a preset concentration.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an apparatus and method for injecting an additive into a source liquid. [Background technology]

[0002] In automobiles, when additives that are effective in improving fuel ignition, combustion, and fuel system cleaning, or that are effective in reducing soot, are mixed into fuel, it is necessary to measure and mix an amount of additive corresponding to the amount of fuel when refilling the fuel. In this case, since the amount of additive to be mixed cannot be calculated without knowing the amount of fuel to be refilled, the additive is poured into the fuel refill port after refilling the fuel. When using such a method, it takes time to refill the fuel, and it is not possible to confirm whether the refilled additive has been well mixed with the fuel in the fuel tank, but by mixing the additive at the same time as refilling the fuel, it is possible to obtain a good mixture in the fuel tank.

[0003] Of these methods, for example, Patent Document 1 describes a fuel additive supplying device that can reliably mix fuel and additives with a simple structure and a method of supplying an additive using the same. The device includes an additive tank for storing an additive to be added to fuel, and an additive supplying means that automatically supplies additive from the additive storage tank to the fuel tank just before and / or during fuel supply to the fuel tank, using a Venturi tube installed in the fuel supply line to automatically supply additive during fuel supply, and the additive can be reliably stirred in the tank by the momentum of the fuel sprayed from a nozzle gun. Patent Document 2 describes a fuel additive supplying device that is composed of a sensor that measures the fuel flow rate, an additive storage tank, a motorized opening / closing valve provided at the bottom of the additive storage tank, an additive remaining amount measuring sensor that measures the remaining amount in the additive tank, and a controller that controls the amount of additive supplied, in order to provide an additive supplying device that can accurately mix the additive flow rate and fuel flow rate at a predetermined ratio. Patent Document 3 describes an apparatus for adding a fuel additive to fuel, the apparatus including an additive supplier that supplies a fuel additive that promotes the oxidation of particulate matter, and the additive supplier being connected to a fuel supply passage.

[0004] However, neither of these devices can be applied to cases where minute amounts of additive are mixed into a small amount of concentrate, such as mixing an additive with a ratio of 1 part of 3,000 of fuel into 30 L of fuel. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2005-98175 [Patent Document 2] Patent Publication No. 2007-303413 [Patent Document 3] Patent Publication No. 2015-4320 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide an additive injection device that is composed of a flow meter for the fluid into which the additive is to be injected, an additive injection device capable of setting the additive to a preset value, and a control device that can set the injection amount of additive corresponding to the flow rate of the fluid into which the additive is to be injected to a preset concentration, in order to continuously inject the additive so that the concentration of the additive in the fuel becomes a preset value. [Means for solving the problem]

[0007] The invention described in claim 1 describes an additive injection device that is composed of a piston, a cylinder with a check valve installed on the top, a cam, and a rotation mechanism for this cam.

[0008] The invention described in claim 2 is characterized by using a device consisting of a piston, a cylinder with a check valve installed on the top, a cam and a rotation mechanism for this cam.

[0009] The invention described in claim 3 describes an additive injection device that is composed of a piston, a cylinder with a check valve installed on the top, a cam with a lift corresponding to the amount of additive to be injected, and a rotation mechanism for this cam, in order to reliably inject a specified amount of additive.

[0010] The invention described in claim 4 is characterized by the use of a device consisting of a piston, a cylinder with a check valve installed on the top, a cam with a lift corresponding to the amount of additive to be injected, and a rotation mechanism for this cam, in order to reliably inject a specified amount of additive.

[0011] The invention described in claim 5 is characterized by having a device that includes a piston, a cylinder with a check valve installed on the top, a cam with multiple lifts that can change the amount of additive injected, and a rotation mechanism for this cam, in order to inject a preset amount of additive.

[0012] The invention described in claim 6 is characterized by using a device consisting of a piston, a cylinder with a check valve installed on the top, a cam with multiple lifts that can change the amount of additive injected, and a rotation mechanism for this cam, in order to inject a preset amount of additive.

[0013] The invention described in claim 7 is characterized in that the device is composed of a piston, a cylinder with a check valve installed on the top, a cam and a cam rotation mechanism in order to inject a preset amount of additive, and has a mechanism that can change the amount of additive injected by changing the rotation speed of the cam.

[0014] The invention described in claim 8 is characterized by using a method in which, in order to inject a preset amount of additive, in a device consisting of a piston, a cylinder with a check valve installed on the top, a cam, and a cam rotating mechanism, the amount of additive injected is changed by changing the rotation speed of the cam.

[0015] The invention described in claim 9 describes an additive injection device that includes a flow meter for a fluid into which the additive is to be injected, an additive injection device capable of setting the additive to a preset value, and a control device that can set the injection amount of the additive corresponding to the flow rate of the fluid into which the additive is to be injected to a preset concentration, in order to continuously inject the additive so that the concentration after injection of the additive becomes a preset value.

[0016] The invention described in claim 10 is a method for adding an additive so that the concentration after the additive is injected becomes a preset value. In order to continuously inject the additive, the system is characterized by using a configuration including a flow meter for the fluid into which the additive is to be injected, an additive injection device capable of setting the additive to a preset value, and a control device capable of setting the injection amount of the additive corresponding to the flow rate of the fluid into which the additive is to be injected to a preset concentration. Effect of the Invention

[0017] By using the present invention, it is possible to continuously inject an additive so that the concentration after injection of the additive reaches a preset value. [Brief description of the drawings]

[0018] [Figure 1] 1 shows a basic configuration of a system according to an embodiment of the present invention. [Diagram 2] 1 shows an example of a structure for adjusting the amount of additive added in the system according to an embodiment of the present invention. [Diagram 3] 1 shows a layout diagram of devices constituting the system according to an embodiment of the present invention and the functions of each device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figure 1 shows the basic configuration of the system according to the embodiment of the present invention. In Figure 1(a), the piston (1) is located at the bottom, and the cylinder (2) is filled with additive that is sucked in through the check valve (3) when the piston (1) descends. In Figure 1(b), when the piston (1) rises due to the rotation of the cam (4), the additive in the cylinder (2) is injected into the concentrate through the check valve (3).

[0020] At this time, the amount of additive mixed into the concentrate and delivered to the concentrate tank is proportional to the stroke of the piston (1), which is determined by the cross-sectional area of ​​the cylinder (2) and the shape of the cam.

[0021] The cam (4) is equipped with a rotating mechanism that rotates the camshaft, and the rotation of the camshaft can be controlled. In other words, with each rotation of the camshaft, an amount of additive proportional to the cross-sectional area of ​​the cylinder (2) and the stroke of the piston (1) is mixed into the stock solution.

[0022] FIG. 2 shows an example of a structure for adjusting the amount of additive added in the system according to the embodiment of the present invention. The camshaft shown in Figure 2 is fitted with cams of different shapes to change the stroke of the piston (1). The stroke of the piston (1) suitable for the amount of additive injected and the number of rotations of the camshaft can be selected by a rotation mechanism installed on the camshaft.

[0023] FIG. 3 shows a layout diagram of the devices constituting the system according to the embodiment of the present invention and the functions of each device. The raw liquid is fed to the supply tank through a flow meter. The flow rate signal of the raw liquid measured by the flow meter is sent to the control device, and the stroke of the piston of the additive injection device and the number of revolutions of the rotation mechanism are set to the optimum state so that the additive mixing ratio is set in the control device. [Industrial Applicability]

[0024] The present invention is applicable to an apparatus that continuously injects an additive so that the concentration after the additive is injected reaches a preset value. [Explanation of symbols]

[0025] 1. Piston 2. Cylinder 3. Check valve 4. Cam mechanism

Claims

1. An additive injection device consisting of a piston, a cylinder with a check valve installed on top, a cam and a rotating mechanism for this cam.

2. A method for injecting an additive, characterized by using a device consisting of a piston, a cylinder with a check valve installed on the top, a cam and a rotation mechanism for this cam.

3. 2. The additive injection device according to claim 1, which comprises a piston, a cylinder with a check valve installed at the top, a cam having a lift corresponding to the amount of additive to be injected, and a rotation mechanism for this cam, in order to reliably inject a specified amount of additive.

4. 3. The method for injecting an additive according to claim 2, characterized in that, in order to reliably inject a set amount of additive, a device is used that is composed of a piston, a cylinder with a check valve installed at the top, a cam having a lift corresponding to the amount of additive to be injected, and a rotation mechanism for this cam.

5. 2. The additive injection device according to claim 1, characterized in that it comprises a device comprising a piston, a cylinder with a check valve installed at the top, a cam with multiple lifts capable of changing the amount of additive injected, and a rotation mechanism for this cam, in order to inject a preset amount of additive.

6. 3. The method for injecting an additive according to claim 2, characterized in that a device is used that comprises a piston, a cylinder with a check valve installed at the top, a cam with multiple lifts that can change the amount of additive injected, and a rotation mechanism for this cam, in order to inject a preset amount of additive.

7. 2. The additive injection device according to claim 1, characterized in that the device is composed of a piston, a cylinder with a check valve installed on the top, a cam and a cam rotation mechanism, in order to inject a preset amount of additive, and has a mechanism that can change the amount of additive injected by changing the rotation speed of the cam.

8. 3. The method for injecting an additive according to claim 2, characterized in that in order to inject a preset amount of additive, a method is used in which the number of rotations of the cam is changed in a device consisting of a piston, a cylinder with a check valve installed at the top, a cam and a cam rotating mechanism, to change the amount of additive injected by changing the number of rotations of the cam.

9. 2. The additive injection device according to claim 1, comprising a flowmeter for a fluid into which the additive is to be injected, an additive injection device capable of setting the additive to a preset value, and a control device capable of setting the injection amount of the additive corresponding to the flow rate of the fluid into which the additive is to be injected so as to achieve a preset concentration, in order to continuously inject the additive so that the concentration after the additive is injected is a preset value.

10. 3. The method for injecting an additive according to claim 2, characterized in that it comprises a flow meter for a fluid into which the additive is to be injected, an additive injection device capable of setting the additive to a preset value, and a control device capable of setting the injection amount of the additive corresponding to the flow rate of the fluid into which the additive is to be injected so as to achieve a preset concentration, in order to continuously inject the additive so that the concentration after the additive is injected is a preset value.

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