JP4458338B2 - Vertical pump - Google Patents

Description

  The present invention relates to a vertical pump that ejects liquid in a container from the nozzle to the outside in the form of mist, bubbles, or liquid.

  Conventionally, for example, a trigger type vertical pump container in which a trigger type vertical pump is mounted on a container body is already well known as shown in Patent Document 1 and Patent Document 2 below.

  The trigger type vertical pump in this trigger type vertical pump container has a nozzle pipe having a discharge valve at the upper end part and a piston pipe having a flexible and elastic annular piston at the lower end part, and a suction valve at the lower part. It is urged upward in a vertical cylinder with a suction pipe suspended from the lower end, and is slidably fitted by the annular piston, and the piston pipe is movable up and down on the upper part of the cylinder. The cylinder holding cylinder is inserted and fitted into the container body, and the cylinder holding cylinder is attached to the container body by the mounting cylinder, and an outside air introduction path that leads from the upper end to the container body is formed in the cylinder holding cylinder. In addition, the piston tube is configured by mechanically movably connecting a trigger mounted on the cylinder holding cylinder, and by moving the piston tube up and down by operating the trigger, the liquid in the container body is absorbed. Suction and pressurize into the cylinder through the pipe and blow out from the nozzle through the piston pipe, and along with this, the outside air is sucked into the container body through the outside air introduction path to prevent the pressure in the container body from becoming incompressible. ing.

  However, this type of vertical pump container is exclusively for an upright posture, and when used in an inverted posture or a deeply tilted posture, liquid in the container leaks through the outside air introduction path.

  However, in actual use, it may be used in an inverted posture or a deeply tilted posture (or must be used), and even in such a posture, liquid initially remains in the cylinder or piston pipe. So, if it is used once or twice, the liquid can be ejected, but when it is used in an inverted position or a deeply tilted position, the liquid leaks through the outside air introduction path and wets or soils the hands and surroundings. Cause inconvenience.

On the other hand, in a conventional inverted liquid ejector having a conventional push-out jet head as shown in Patent Document 3 below, a valve body that closes an outside air introduction path to a cylinder in a container body is equipped, thereby reducing pressure in the container body. Accordingly, the valve body is automatically opened to obtain the intake of outside air. Therefore, if such a valve body is also used in the vertical pump container, the liquid from the outside air introduction path in an inverted posture or a deep tilted posture is used. Although leakage can be prevented, the use of a separate valve body not only increases the number of members but also increases the number of assembly steps, resulting in high costs.
JP 2002-104471 A JP 2002-136898 A JP-A-11-262704

  Therefore, the present invention eliminates inconveniences such as leakage or wetness of the hand or surroundings by preventing leakage of liquid from the outside air introduction path even when used in an inverted posture or a deep tilted posture. In addition, an outside air introduction valve can be installed in the outside air introduction path only by changing the shape of the conventional member without increasing the number of parts and assembly man-hours, and this can be automatically opened as the pressure in the container body is reduced. By this, outside air can be introduced into the container body.

The vertical pump according to claim 1 is provided with a piston pipe having a nozzle having a discharge valve at an upper end portion and an annular piston having a flexible and elastic property at a lower end portion, and the piston pipe is disposed in a vertical cylinder. The cylinder holding cylinder is fitted to the upper part of the cylinder by inserting the piston tube so as to be movable up and down. In a vertical pump configured to be mounted on a container body by a mounting cylinder, an outside air introduction path leading from the upper end into the container body is formed in the cylinder holding cylinder, and a pressing means is provided on the piston pipe. ,
An outside air introduction path cylinder is provided in the upper part of the cylinder holding cylinder, and the upper end of the annular piston extends to the upper part of the outside air introduction path cylinder, and the upper end of the annular piston is connected to the outside air introduction path cylinder. A flange-like valve portion is integrally formed on the outer periphery of the upper end portion so as to abut on a downward step formed on the inner upper end , and the flange-like valve portion is slidable in the outside air introduction path cylinder. The outside air introduction valve is provided by fitting.

A vertical pump according to a second aspect is the vertical pump according to the first aspect , wherein the end of the flange-shaped valve portion is formed in a square cross section.

A vertical pump according to a third aspect is the vertical pump according to the first aspect , wherein a tip of the flange-like valve portion is formed in an arc shape in cross section.

A vertical pump according to a fourth aspect is the vertical pump according to the first aspect , wherein a tip of the flange-like valve portion is formed to have a pointed cross section.

In the vertical pump according to claim 1, the outside air introduction is performed by extending the upper end portion of the flexible and elastic piston to the upper portion of the outside air introduction passage and opening the valve to the outside by downstream non-pressure. Since the valve part is integrally formed, the valve part can be provided with the required flexibility and elasticity, and without increasing the number of parts and assembly man-hours in the course of the outside air introduction path The outside air introduction valve can be equipped only by changing the shape of the conventional member, and this outside air introduction valve can accurately prevent liquid leakage from the outside air introduction path in an inverted posture or a deep tilted posture. Since the valve part can be elastically deformed downstream due to no pressure inside the container body and the outside air introduction valve can be automatically opened, the outside air can be passed through the outside air introduction path in the container body as the pressure is reduced. Can be implemented without hindrance and therefore achieve the intended purpose. .

Further, the front end of the flange-shaped valve portion is formed to have a square cross section in the vertical pump according to claim 2, a circular arc in the vertical pump according to claim 3 , and a pointed cross section in the vertical pump according to claim 4. Therefore, the valve opening stress on the shape can be gradually reduced according to the order, and these shapes can be appropriately selected according to the material of the annular piston, that is, the material of the flange-like valve portion.

  The drawings show an embodiment of the present invention in a trigger type vertical pump container in which a trigger type vertical pump is mounted on the container body.

  As shown in the drawing, a piston pipe 1 is provided with a nozzle 2 having a top end bent forward and a normally closed discharge valve built in at the tip thereof, and a flexible and elastic annular piston 3 fitted to the bottom end. The annular piston 3 is slidably inserted from above into the inside of a vertical cylinder 4 having an intake valve 5 at the lower part and a suction pipe 6 suspended from the lower end. A coil spring 8 is housed under the tube 1 to urge the piston tube 1 upward, and an outward flange 7 is provided on the outer periphery of the intermediate portion of the cylinder.

  The piston tube 1 is inserted into the upper outer periphery of the cylinder 4 so as to be movable up and down, and a cylinder holding cylinder 9 is fitted, and a mounting cylinder 11 of an internal threaded cylinder is suspended from the lower end of the cylinder holding cylinder via an outward flange 10. The outward flange 10 is brought into contact with the upper surface of the outward flange 7 of the cylinder 4 and is detachably screwed to the mouth and neck of the container body by the mounting cylinder 11. The mounting cylinder 11 is not limited to a screw cylinder, and may be another fitting means. In the figure, reference numeral 12 denotes a packing, and 28 denotes a region improving rod-like member built in the cylinder 4 in order to improve compression efficiency.

  An outside air introduction path 13 that leads from the upper end to the container body is formed inside the cylinder holding cylinder 9, and the outside air introduction path 13 includes a gap 14 between the upper inner surface of the cylinder holding cylinder 9 and the piston pipe 1, a cylinder 4, a longitudinal groove 15 formed on the upper outer surface of the cylinder 4, a through-hole 16 drilled in the outward flange 7 of the cylinder 4 connected to the longitudinal groove 15, and a notch 17 provided in the packing 12 connected to the through-hole 16 in series. Let me.

  Further, an arm 18 protrudes obliquely upward and rearward from the rear outer surface of the cylinder holding cylinder 9 and the outward flange 10 of the cylinder holding cylinder, and a rear end of the trigger 19 is pivotally attached 20 to the upper end of the arm. The intermediate portion is pivotally attached 21 to the appropriate position of the piston pipe 1, and the front portion, that is, the operation portion 22 is suspended obliquely forward.

  Thus, the trigger 19 is actuated by pulling the operating portion 22, the piston pipe 1 is pushed down against the coil spring 8, and is returned and raised by the coil spring, whereby the normally closed discharge valve and By alternately opening and closing with the suction valve 5, the liquid in the container is sucked into the cylinder 4 through the suction pipe 6 and pressurized, and is ejected from the nozzle 2 through the piston pipe 1 to the outside. Outside air is supplied into the container body through the introduction path 13 to prevent pressure in the container body.

  The above is the same as the trigger type vertical pump in the conventional trigger type vertical pump container.

  In such a trigger type vertical pump, the trigger type vertical pump according to the embodiment of the present invention includes an outside air introduction path cylinder 24 in the upper part of the cylinder holding cylinder 9 as shown in FIGS. The upper end portion 25 of the annular piston 3 is extended to the upper part of the outside air introduction path cylinder 24 and is brought into contact with the downward step 26 at the upper end of the outside air introduction path cylinder. The ascending limit of the annular piston 3 and the piston pipe 1 is set by abutting, and a flange-like valve portion 27 is integrally provided on the outer periphery of the upper end portion 25, and the flange-like valve portion is connected to the outside air introduction path cylinder 24. The outside air introduction valve 23 is configured to be slidably fitted therein. The flange-shaped valve portion 27 may be provided on the outer periphery of the upper end of the annular piston 3.

  The flange-like valve portion 27 in the outside air introduction valve 23 is integral with the flexible and elastic annular piston 3 and can be elastically deformed. When the annular piston 3 rises together with the piston pipe 1, FIG. When it is elastically deformed downward as shown in FIG. 4B and descends, it is elastically deformed upward as shown in FIG. 3B, but it does not open the valve alone.

  By the way, when the pressure in the container body is reduced, the liquid in the container body is sucked up into the cylinder 4, and is the case of FIG. 3A where the annular piston 3 rises together with the piston pipe 1. The flange-shaped valve portion 27 that has been elastically deformed downward as it rises is further elastically deformed downward due to the non-pressure in the container body, so that the valve is opened. Accordingly, the outside air introduction valve 23 is automatically opened as the pressure in the container body is reduced, and the outside air flows into the container body through the outside air introduction path 13. In other cases, the outside air introduction valve 23 is closed, so that the liquid in the container does not flow outside through the outside air introduction path 13.

  In addition, although the trigger type | formula vertical type pump is shown in the above-mentioned embodiment, not only a trigger but the form of other sprays or pumps is also possible.

  Specifically, the flange-like valve portion 27 in the outside air introduction valve 23 may be formed as in the following embodiment, for example. In the following Examples 1 to 3, the valve opening stress in the shape can be gradually reduced in the order, and these may be arbitrarily selected in the design.

  As shown in FIG. 4A, in the outside air introduction valve 23, the tip of the flange-like valve portion 27 is formed in a square cross section.

  As shown in FIG. 4 (B), in the outside air introduction valve 23, the tip of the flange-like valve portion 27 is formed in a cross-sectional arc shape.

  As shown in FIG. 4C, in the outside air introduction valve 23, the tip of the flange-like valve portion 27 is formed to have a pointed cross section.

It is a cutaway side view showing an embodiment of the invention. It is a principal part expanded sectional view of FIG. FIG. 6 is an operation explanatory cross-sectional view of the main part in the same embodiment. It is principal part sectional drawing which shows the Example in the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piston pipe 2 Nozzle 3 Annular piston 4 Cylinder 5 Suction valve 6 Suction pipe 7 Outward flange 8 Coil spring 9 Cylinder holding cylinder 10 Outward flange 11 Mounted cylinder 12 Packing 13 Outside air introduction path 14 Gap 15 Vertical groove 16 Through hole 17 Notch 18 Arm 19 Trigger 20 Pivoting 21 Pivoting 22 Operating part 23 Outside air introduction valve 24 Cylinder for outside air introduction path 25 Upper end part 26 Downward step part 27 Flange-like valve part 28 Bar-like member for region improvement

Claims (4)

A piston pipe having a nozzle provided with a discharge valve at the upper end and a flexible and elastic annular piston at the lower end is provided, and the piston pipe is urged upward into a vertical cylinder. It is inserted so as to be slidable by an annular piston, the piston tube is inserted into the upper part of the cylinder so as to be movable up and down, a cylinder holding cylinder is fitted, and the cylinder holding cylinder is attached to the container body by the mounting cylinder. In the cylinder holding cylinder, forming an outside air introduction path leading from the upper end into the container body, and in the vertical pump in which the piston pipe is provided with a pressing means,
An outside air introduction path cylinder is provided in the upper part of the cylinder holding cylinder, and the upper end of the annular piston extends to the upper part of the outside air introduction path cylinder, and the upper end of the annular piston is connected to the outside air introduction path cylinder. A flange-like valve portion is integrally formed on the outer periphery of the upper end portion so as to abut on a downward step formed on the inner upper end , and the flange-like valve portion is slidable in the outside air introduction path cylinder. A vertical pump characterized in that it is fitted with an outside air introduction valve. The vertical pump according to claim 1 , wherein the flange-shaped valve portion has a tip formed in a square cross section. The vertical pump according to claim 1 , wherein a tip of the flange-shaped valve portion is formed in an arc shape in cross section. 2. The vertical pump according to claim 1 , wherein the flange-shaped valve portion has a tip formed in a pointed cross section.

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