JP2013189240A - Liquid injecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly and securely inject liquid in a container regardless of an inner diameter of the container.SOLUTION: An opening 111Ab is formed at a lower end 111A of an injecting cylinder 111. A straightening cylinder 141 is installed at an end on the lower side of an air vent pipe 132 disposed at the inner side of the injecting cylinder 111 and is disposed to oppose the opening 111Ab. When the air vent pipe 132 is moved in the longitudinal direction by operating a male screw cylinder 152 of an adjustment part 151 to change a separation distance P between the opening of the injecting cylinder 111 and the straightening cylinder 141, a flow-down direction o the liquid Q injected from the opening 111Ab of the injecting cylinder 111 is changed.

Description

  The present invention relates to a liquid injection apparatus for injecting a liquid into a container.

  Patent Document 1 discloses an invention of a liquid filling valve. As described in the summary of this document, the present invention relates to “a liquid filling valve for filling a container such as a glass bottle or a plastic bottle with a liquid for drinking”, and “fixed to a filling tank”. An upper outer cylinder, an intermediate cylinder that can be moved up and down, a filling pipe connected to the intermediate inner cylinder, an air vent pipe penetrating the inside of the filling pipe, and a tip attached to the air vent pipe, In the liquid filling valve provided with a liquid supply port between the tip and the liquid inlet, the intermediate inner cylinder is provided with a liquid inlet that communicates with the upper outer cylinder, and an air vent hole is provided at a horizontally opposed position at the lower end of the air vent pipe. In addition, the liquid supply port is configured to be provided at two locations so as to be symmetric with respect to the axis of the air flow passing through the air vent hole. And a flow as possible uniform, is obtained so as to "be able to reduce the working time.

  In paragraph 0022 of Patent Document 1, “the air vent hole 4 is formed so as to communicate with the inside of the air vent pipe 7 as shown in FIGS. 2 (a) and 2 (b). The air in the container 20 is discharged from the air vent hole 4 into the tank 30 through the air vent pipe 7. The phase of the liquid supply port 9a is substantially the same as that of the air vent hole 4. Two positions of the tip 9 are formed so as to be symmetrical with respect to the axis of the air flow passing through the air vent hole 4, as shown in FIGS. 2 (a) and 2 (c). 2, so that the liquid from the tank 30 flows into the container 20 in the horizontal direction in the drawing in the liquid filling operation as shown in FIG. There is a description "And in paragraph 0026 of the same document, “When the intermediate inner cylinder 2 rises, the tip 9 protrudes from the filling pipe 10 and the liquid supply port 9 a is exposed in the container 20. 2 (a) flows out from the lower end of the filling pipe 10 in the direction of arrow A. At this time, the air in the container 20 is vented from the direction of arrow B in FIG. It is discharged through the pipe 7 and above the filling tank 30 ".

Japanese Patent Laid-Open No. 10-152198

  When filling liquid into containers of various shapes using the liquid filling valve described in Patent Document 1, it is difficult to eject the liquid along the inner wall from the mouth portion of the container 20 to the bottleneck portion. The following problems arise.

  For example, when the inner diameter of the container 20 is small, the liquid discharged from the liquid supply port 9a of the liquid filling valve collides with the inner wall of the container 20 at a substantially right angle, and the liquid is dispersed in the vertical direction to close the air vent holes 4 and May enter the air vent pipe 7 (so-called “spraying back” occurs).

  In addition, when the inner diameter of the container 20 is large, the liquid discharged from the liquid supply port 9a of the liquid filling valve reaches the bottom of the container 20 before reaching the inner wall of the container 20, and the liquid accumulated in the container 20 bubbles. Therefore, the bubbles may block the air vent hole 4 and the bubbles may be ejected from between the container opening 20 </ b> A of the container 20 and the packing 16.

  The present invention has been made in view of the above points, and an object of the present invention is to allow liquid to be quickly and reliably injected into a container regardless of the inner diameter of the container.

  The liquid injection device of the present invention has an opening at a first end, is inserted into a bottleneck portion of a container from the side of the first end, and an injection cylinder from which liquid is ejected from the opening, and the injection cylinder A rectifier that is provided at an end of the elongated body disposed on the inner side of the elongated body and is disposed so as to face the opening, and changes a flow direction of the liquid ejected from the opening; and the elongated body An adjustment unit that moves in the longitudinal direction to change a separation distance between the opening of the injection tube and the rectification unit.

  According to the present invention, it is possible to adjust the ejection speed and the flow direction of the liquid ejected from the opening 111 of the injection cylinder by moving the rectifying cylinder in the vertical direction. Can be quickly and reliably injected.

It is the figure which showed the external appearance of the liquid injection apparatus typically. It is a schematic diagram which shows the internal structure of a liquid injection apparatus. It is sectional drawing of the liquid injection | pouring apparatus and the container of the state in which the liquid is injected into the container with a small internal diameter of a bottleneck part. FIG. 4 is a partially enlarged view of FIG. 3. It is sectional drawing of the liquid injection | pouring apparatus and the container of the state into which the liquid is injected into the container with a large internal diameter of a bottleneck part. FIG. 6 is a partially enlarged view of FIG. 5. It is sectional drawing of the liquid injection | pouring apparatus and the container of the state in which the liquid is inject | poured into the container with a short bottleneck part.

  One embodiment will be described with reference to FIGS. FIG. 1 is a diagram schematically illustrating the appearance of the liquid injection device 101. FIG. 2 is a schematic diagram showing the internal structure of the liquid injection device 101. The liquid injection device 101 is used to inject a liquid Q (for example, a cleaning liquid) into a container 201 (see FIG. 3) such as a washer tank.

  The liquid injection device 101 includes an injection cylinder 111, a liquid supply cylinder 121, an air vent pipe 132 as a long body, a rectification cylinder 141 as a rectifier, and an adjustment unit 151.

  The injection cylinder 111 is a portion that is inserted into a bottle neck 203 (see FIG. 3) that extends from the main body 202 (see FIG. 3) of the container 201 when the liquid Q is injected into the container 201, and is a cylinder that extends in the vertical direction. It has a shape. An opening 111 </ b> Ab is formed at the lower end 111 </ b> A (first end) of the injection tube 111. The upper end 111B (second end) of the injection tube 111 is closed. A male screw part 112 is formed on the outer peripheral surface of the injection tube 111. A stopper 113 is attached to the male screw portion 112. The stopper 113 has a ring shape and has a female screw portion (not shown) on the inner peripheral surface. The stopper 113 is disposed on the outer periphery of the injection tube 111 by screwing the female screw portion of the stopper 113 into the male screw portion 112. The stopper 113 can be moved in the vertical direction (longitudinal direction of the injection cylinder 111) by being rotated in the circumferential direction R1 of the injection cylinder 111.

  The liquid supply cylinder 121 extends from the upper outer peripheral surface of the injection cylinder 111 in a direction crossing the injection cylinder 111 and communicates with the injection cylinder 111. The liquid supply cylinder 121 is connected to a supply tank (not shown) that supplies the liquid Q. In this supply tank, the liquid Q can be supplied and stopped according to the operation. The liquid Q supplied to the liquid supply cylinder 121 flows into the injection cylinder 111 and is ejected from the lower end 111A of the injection cylinder 111. The liquid supply cylinder 121 and the injection cylinder 111 constitute a flow path L for the liquid Q.

  The air vent pipe 132 is a long pipe having a diameter smaller than that of the injection cylinder 111. Both end portions of the air vent tube 132 are open. The air vent pipe 132 is positioned inside the injection cylinder 111, and the middle part thereof is disposed in the injection cylinder 111 and is positioned coaxially with the injection cylinder 111. The upper end portion of the air vent tube 132 penetrates the upper end 111B of the injection tube 111 and protrudes upward. Here, a sealing member 111 </ b> C that seals a gap between the upper end 111 </ b> B and the air vent pipe 132 is provided at the upper end 111 </ b> B of the injection tube 111. The lower end portion of the air vent tube 132 protrudes below the lower end 111A of the injection tube 111, and a rectifying tube 141 is connected thereto. The air vent tube 132 can move in the longitudinal direction of the injection cylinder 111 (vertical direction, longitudinal direction of the air vent tube 132 itself). At this time, the air vent tube 132 slides with respect to the seal member 111C, but the leakage of the liquid Q from the upper end 111B of the injection tube 111 is prevented by the seal member 111C.

  The rectifying cylinder 141 has a three-dimensional shape that looks like a left-right symmetric pentagon like a shogi piece in a side view, with an obtuse cone protruding from the top surface of the truncated cone. The rectifying cylinder 141 has a bowl shape that opens downward, and a second in-cylinder space 141B is formed therein. The rectifying cylinder 141 is arranged so that the top part 141 </ b> A is connected to the lower end part of the air vent pipe 132 and faces the opening 111 </ b> Ab of the lower end 111 </ b> A of the injection cylinder 111. In the top portion 141A, the second in-cylinder space 141B of the rectifying tube 141 and the first in-cylinder space 132A of the air vent tube 132 communicate with each other. The first in-cylinder space 132 </ b> A of the air vent pipe 132 and the second in-cylinder space 141 </ b> B formed in the rectifying cylinder 141 discharge the air pushed out from the container 201 by the liquid Q injected into the container 201. Configure.

  The outer peripheral surface 142 of the truncated cone portion of the rectifying cylinder 141 has a tapered shape that narrows toward the air vent pipe 132. The tapered surface (step surface 143) of the obtuse conical portion of the rectifying cylinder 141 extends from the upper end of the outer peripheral surface 142 toward the outer peripheral surface of the air vent tube 132 at an inclination angle different from that of the outer peripheral surface 142. The liquid Q ejected from the lower end 111 </ b> A of the injection tube 111 is interfered with the outer peripheral surface 142 and the step surface 143, and the flow direction changes. Here, in the rectifying cylinder 141 of the present embodiment, the step surface 143 is located on a virtual extension line M extending in parallel with the axis of the injection cylinder 111 from the inner edge 111Aa of the lower end 111A of the injection cylinder 111. However, the shape of the rectifying cylinder 141 is not limited thereto, and for example, the shape of the outer peripheral surface 142 may be located on the virtual extension line M.

  The adjustment unit 151 includes a male screw cylinder 152 and a female screw cylinder 153. The male screw cylinder 152 is a short cylinder having a male screw groove formed on the outer periphery thereof, and extends upward from the upper end 111B of the injection cylinder 111 coaxially with the injection cylinder 111. The diameter of the male screw cylinder 152 and the diameter of the injection cylinder 111 may be the same or different. The female screw cylinder 153 is a short cylinder that has a female screw groove formed on the inner peripheral surface thereof and is screwed into the male screw cylinder 152. The female screw cylinder 153 is fixed to an upper end 132B (an end opposite to the rectifying cylinder 141) protruding from the upper end 111B (second end) of the injection cylinder 111 in the air vent pipe 132.

  Regarding the adjustment unit 151, the female screw cylinder 153 moves in the up and down direction together with the exhaust part 131 as the female screw cylinder 153 rotates in the circumferential direction R <b> 2 of the male screw cylinder 152. When the female screw cylinder 153 moves in the vertical direction, the air vent pipe 132 and the rectifying cylinder 141 also move accordingly, and the rectifying cylinder 141 moves closer to and away from the opening 111Ab of the lower end 111A of the injection cylinder 111. Thereby, the separation distance P between the lower end 111A of the injection tube 111 and the step surface 143 (or the outer peripheral surface 142) of the flow straightening tube 141 changes. Here, an air hole 154 as shown in FIG. 2 is provided in the female screw cylinder 153, and the air located between the male screw cylinder 152 and the female screw cylinder 153 acts like a cushion so that the female screw cylinder 153 It can also be prevented from becoming difficult to move.

  The operation of injecting the liquid Q into the container 201 using the liquid injection device 101 configured as described above will be described below.

  FIG. 3 is a cross-sectional view of the liquid injection device 101 and the container 201 in a state where the liquid is injected into the container 201 having a small inner diameter of the bottleneck portion 203. FIG. 4 is a partially enlarged view of FIG. In a state where the supply of the liquid Q from the supply tank (not shown) is stopped, the operator turns the stopper 113 to adjust the vertical position of the stopper 113 in the injection cylinder 111, and lowers the lower end 111 </ b> A ( It is inserted into the mouth 204 of the bottle neck 203 of the container 201 from the first end) side. Here, when the stopper 113 is in contact with the mouth portion 204 of the bottle neck portion 203 of the container 201, the injection tube 111 can no longer enter the bottle neck portion 203. Subsequently, the operator rotates the female screw cylinder 153 of the adjustment unit 151 to move the rectifying cylinder 141 in the vertical direction, so that the lower end 111 </ b> A of the injection cylinder 111 and the step surface 143 (or the outer peripheral surface 142) of the rectifying cylinder 141. The separation distance P is changed. Thereafter, the operator operates a supply tank (not shown) to start supplying the liquid Q. After the liquid Q has accumulated in the main body portion 202 of the container 201 by a desired amount, the operator operates the supply tank to stop the supply of the liquid Q and causes the injection tube 111 to be detached from the bottle neck portion 203.

  Here, a case where the inner diameter of the bottle neck portion 203 of the container 201 is small is considered. In this case, the operator moves the female screw cylinder 153 to increase the separation distance P (this distance is indicated by reference sign P1 in FIGS. 3 and 4). Thereby, the ejection speed of the liquid Q injected from the lower end 111A of the injection tube 111 through the step surface 143 and the outer peripheral surface 142 into the main body 202 of the container 201 does not increase, and the liquid Q is in the vertical direction as shown in FIG. It flows down along a trajectory close to (a direction orthogonal to the horizontal plane), flows down along the inner wall of the bottleneck portion 203, and accumulates in the main body 202. In this way, the liquid Q is prevented from colliding with the inner wall of the bottle neck portion 203 substantially vertically. Further, the air accumulated in the main body 202 enters the second in-cylinder space 141B of the rectifying cylinder 141 as shown by an arrow A in FIGS. 3 and 4, and enters the first in-cylinder space 132A of the air vent pipe 132. Pass through and escape to the outside of the container 201.

  FIG. 5 is a cross-sectional view of the liquid injection device 101 and the container 201 in a state where the liquid is injected into the container 201 having a large inner diameter of the bottleneck portion 203. FIG. 6 is a partially enlarged view of FIG. On the other hand, when the inner diameter of the bottle neck portion 203 of the container 201 is large, the operator moves the female screw cylinder 153 of the adjusting portion 151 to reduce the separation distance P (this distance is shown in FIGS. 5 and 6). (Indicated by symbol P2). Since the separation distance P is narrowed, the ejection speed of the liquid Q passing through the gap between the lower end 111A of the injection cylinder 111 and the rectifying cylinder 141 is increased, and the liquid Q flows into the bottleneck portion 203 as shown in FIG. It spreads radially in a horizontal direction toward the inner wall and flows down along a trajectory along the inner wall of the bottle neck portion 203, and then accumulates in the main body portion 202. In this way, the liquid Q is prevented from bubbling due to the liquid Q accumulating in the main body 202 of the container 201 without being along the inner wall. Further, the air accumulated in the main body 202 enters the second in-cylinder space 141B of the rectifying cylinder 141 as shown by an arrow A in FIGS. 5 and 6, and enters the first in-cylinder space 132A of the air vent pipe 132. Pass through and escape to the outside of the container 201.

  As described with reference to FIGS. 3 to 6, in the liquid injection device 101 of the present embodiment, the ejection speed of the liquid Q ejected from the opening 111 </ b> Ab of the injection cylinder 111 and the rectifying cylinder 141 are moved in the vertical direction. The flow direction can be adjusted. For this reason, the liquid Q can be quickly and reliably injected into the container 201 regardless of the inner diameter of the container 201. Further, in the liquid injection device 101 of the present embodiment, the air in the container 201 is discharged by the exhaust unit 131 when the liquid Q is injected, so that rapid liquid injection can be performed without causing the liquid to return. It becomes possible.

  FIG. 7 is a cross-sectional view of the liquid injection device 101 and the container 201 in a state where the liquid is injected into the container 201 having a short bottleneck portion 203. When the operator injects the liquid Q into the container 201 having the short bottleneck portion 203 using the liquid injection device 101 of the present embodiment, the operator turns the stopper 113 and moves it downward as shown in FIG. The projecting length below the stopper 113 in the injection cylinder 111 is shortened, and the lower end of the injection cylinder 111 is inserted from the mouth portion 204 of the bottle neck portion 203 of the container 201. Thereby, the liquid Q flowing down from the injection cylinder 111 is set such that the height position of the lower end 111A of the injection cylinder 111 is higher than the height position of the main body 202 of the container 201 and is equivalent to the bottle neck section 203. It can be brought close to the inner wall of the bottleneck portion 203 and the bubbling of the liquid Q can be suppressed, and quick and reliable liquid injection is realized.

  Further, when the liquid Q is injected into the container 201 having the long bottleneck portion 203 using the liquid injection device 101 of the present embodiment, the stopper 113 is rotated and moved upward so that the stopper 113 in the injection cylinder 111 is moved. Also, it is sufficient to perform the same operation as described above after extending the downward protruding length.

  As described above, in the liquid injection device 101 according to the present embodiment, by moving the stopper 113 up and down, the optimum height is set such that foaming is suppressed even for the containers 201 having different lengths of the bottleneck portion 203. By positioning the lower end 111A of the injection cylinder 111 and the rectifying cylinder 141 at the positions, it is possible to realize quick and reliable liquid injection without causing a jet back.

  In the liquid injection apparatus 101 described above, the adjusting unit 151 is disposed outside the injection cylinder 111. However, a mechanism for moving the rectifying cylinder 141 up and down is provided inside the injection cylinder 111. Also good. For example, a magnet may be attached to the middle part of the air vent tube 132 located in the injection cylinder 111, and this magnet may be moved from the outside of the injection cylinder 111 by another magnetic force.

101 Liquid injection device 111 Injection cylinder 111A Lower end (first end) of injection cylinder
111Ab Opening 111B Upper end (second end) of injection tube
113 Stopper 131 Exhaust part 132 Air vent pipe (long body)
132B Upper end of air vent pipe 141 Rectifier cylinder (rectifier)
151 Adjustment part 201 Container 203 Bottleneck part 204 Mouth part P Separation distance Q Liquid

Claims (4)

An injection cylinder having an opening at the first end, inserted into the bottleneck of the container from the side of the first end, and liquid ejected from the opening;
A rectifier that is provided at an end of the elongated body disposed inside the injection tube and is disposed so as to face the opening, and changes the flow direction of the liquid ejected from the opening;
An adjustment unit that moves the elongate body in the longitudinal direction thereof and changes a separation distance between the opening of the injection tube and the rectification unit;
A liquid injection device comprising: The second end of the injection tube is closed;
The elongated body passes through the second end,
The adjustment part is provided at an end of the elongated body protruding from the second end.
The liquid injection device according to claim 1. An exhaust part for discharging the air in the container via the rectifier and the elongated body;
The liquid injection device according to claim 1 or 2. A stopper arranged on the outer periphery of the injection cylinder, movable in the longitudinal direction of the injection cylinder, and in contact with the mouth of the bottle neck when the injection cylinder is inserted into the bottle neck of the container;
The liquid injection device according to any one of claims 1 to 3.

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