JPH0715558U - Foam jet pump - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a foam jet pump capable of making the quality of foam uniform by making the mixing ratio of liquid and air as constant as possible. In a bubble jet pump for jetting air into a liquid to mix air into the liquid and jetting bubbles, an orifice 33 is provided in the liquid discharge passage 31, and an air jet port 44 is provided in front of the orifice 33. It is characterized by being provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foam jet pump that discharges a liquid content in the form of foam by the same operation as a normal pump, and is used in various containers such as body shampoo, hand soap, and shaving foam.

[0002]

[Prior art]

 As a conventional foam jet pump of this type, there is one as shown in FIG. 4, for example.

That is, the pump body 100 having a hollow inside is attached to the container opening 101. The pump body 100 is provided with a liquid chamber 102 that pumps up and stores the liquid inside the container, and an air chamber 103 that fills with air. An operating member 104 is movably attached to the pump body 100 in order to expand and contract the volumes of the liquid chamber 102 and the air chamber 103 in conjunction with each other.

The operation member 104 includes a liquid discharge passage 105 for discharging the liquid in the liquid chamber 102 to the outside, and an air discharge passage 106 for discharging the air in the air chamber 103 into the liquid discharge passage 105. It is provided. The volume of the liquid chamber 102 and the air chamber 103 is contracted by the operation member 104 to compress the liquid and the air, thereby causing the liquid to flow into the liquid discharge passage 105 and communicating the air discharge passage 106 into the liquid. The air is jetted out to mix the air with the liquid, the air is further bubbled through the screen mesh, and the generated bubbles are jetted out from the outlet of the liquid discharge passage 105.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional bubble jet pump, the air jetted into the liquid in the liquid discharge passage 105 does not mix well with the liquid, so the mixing ratio is not constant, and the generated foam quality is There was a problem that it became uneven.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to make the mixing ratio of liquid and air as constant as possible to make the foam quality uniform. It is to provide a foam jet pump to obtain.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, an internal hollow pump equipped with a liquid chamber for pumping up and storing the liquid inside the container and an air chamber for filling the air, and being attached to the opening of the container A main body; and an operation member that is movably assembled to the pump main body so as to expand and contract the volumes of the liquid chamber and the air chamber in conjunction with each other. A liquid ejection passage for ejecting the liquid in the chamber to the outside and an air ejection passage for ejecting the air in the air chamber to the liquid ejection passage are provided, and the volumes of the liquid chamber and the air chamber are contracted by the operation member. In a bubble jet pump, the liquid and the air are compressed to flow into the liquid discharge passage, and air is jetted into the liquid through the air discharge passage to mix the air into the liquid and jet bubbles. , Serial liquid discharge passage way to an orifice, characterized by providing an air ejection port of the air discharge passage in the hand before the position of the orifice.

A plurality of the air ejection ports are radially provided.

It is characterized in that a mesh member for arranging the bubbles finely and uniformly is arranged at a predetermined distance from the orifice on the outlet side of the orifice.

[0010]

[Action]

 In the present invention, the air is jetted into the liquid from the air jet opening opened in the liquid discharge passage, and the air is mixed in the liquid in a uniformly dispersed state. Here, if a plurality of air ejection ports are radially provided, the liquid and the air can be mixed more uniformly. The liquid mixed with air was taken into the Olys in the state of being bubbled, and the flow velocity suddenly increased and the flow was disturbed, the air and liquid were sufficiently stirred and mixed, and the flow velocity exited from the orifice and decreased. In part, the liquid changes to a nearly uniform foam.

Further, if a mesh member is provided on the outlet side of the orifice, the bubbles are finely crushed when passing through the mesh member and finer bubbles having a uniform size are generated.

[0012]

【Example】

 The present invention will be described below based on the illustrated embodiment.

In FIG. 1 showing a foam jet pump according to an embodiment of the present invention, reference numeral 1 denotes the entire foam jet pump. The foam jet pump 1 is roughly composed of a pump main body 2 having a hollow inside, and an operation member 3 movably assembled to the pump main body 2.

The pump main body 2 is composed of a large-diameter air cylinder portion 5 in which an air chamber 4 is formed, and a small-diameter liquid cylinder portion 6 that is continuous so as to project below the air cylinder portion 5. Has been done. A pipe 8 extending toward the bottom of the container 7 is connected to the lower end of the liquid cylinder portion 6.

A cap 9 is attached to the upper end opening of the air cylinder portion 5. The cap 9 is composed of a top plate portion 10 and a cylindrical portion 11 extending downward from the outer peripheral edge of the top plate portion 10, and a guide portion 12 into which the operation member 3 is slidably inserted in the center of the top plate portion 10. Has been opened. An annular protrusion 13 that protrudes upward is provided at the rim of the guide portion 12.

The operation member 3 is movable back and forth on the inner periphery of the air cylinder portion 5 and the operation shaft portion 14 inserted through the guide portion 12 of the cap 9 so as to reciprocate so as to penetrate the center of the pump body 2. And a piston member 15 that is slidably inserted into the outer periphery of the operation shaft portion 3, and a liquid discharge passage 31 that communicates from the liquid chamber 25 to the nozzle 18a of the ejector head portion 18 is provided. ing.

The operation shaft portion 14 is vertically divided into two in the vicinity of the guide portion 12 of the cap 9, and a first shaft portion 16 located in the lower pump body 2 and a lower end thereof are located at an upper end of the first shaft portion. The second shaft portion 17 is connected and extends above the cap 9, and the ejector head portion 18 is attached to the upper end of the second shaft portion 17.

The piston member 15 includes a large-diameter air piston portion 19 that is reciprocally inserted into the inner circumference of the air cylinder portion 5, and the first shaft portion from the lower edge of the inner circumference of the air piston portion 19. 16 A sleeve 20 having a small diameter, which extends in a tubular shape along the outer periphery and has a tip inserted into the liquid cylinder portion 6.

Between the air piston portion 19 and the bottom surface of the air cylinder portion 5, a first spring member 21 for urging the air piston portion 19 in a constantly pushing up direction, that is, a direction in which the volume of the air chamber 4 is expanded is contracted. The air piston portion 19 is abutted against the stopper portion 22 suspended from the cap 9 by the spring force of the first spring member 21. This position is the top dead center of the piston member 15, and the volume of the air chamber 4 is maximized.

A flange portion 23 that projects outward in the radial direction is formed at an intermediate position of the operation shaft portion 14, that is, a lower end of the second shaft portion 17 in this example.

Between the flange portion 23 and the air piston portion 19, a direction in which a space between the air piston portion 19 and the flange portion 23 is widened, in this example, a direction in which the flange portion 23 is pushed up with respect to the air piston portion 19. A second spring member 24 that urges is attached. In the free state, the flange portion 23 is pressed against the inner surface of the top plate portion 10 of the cap 9 by the second spring member 24.

A suction valve 26 for sucking the liquid into the liquid chamber 25 is provided at the connecting portion between the liquid cylinder portion 6 and the pipe 8. The suction valve 26 is a one-way valve that allows the suction of the liquid into the liquid chamber 25 and blocks the discharge thereof. In this embodiment, the liquid suction port 28 is closed from the inside by the weight of the valve body 27. Has been taken.

Further, at the tip of the sleeve 20 and the first shaft portion 16, the tip of the first shaft portion 16 projects downward from the sleeve 20, and the tip of the first shaft portion 16 is radially outward. A protruding flange portion 29 is formed. The tip of the first shaft portion 16 is closed, and a liquid discharge port 30 for discharging the liquid in the liquid chamber 25 is formed near the lower end of the side wall of the first shaft portion 16. The liquid discharge port 30 is the sleeve 20. It is opened and closed by relative reciprocal movement of the side wall of the first shaft portion 16 and the sleeve 20, and the liquid discharge port 30 constitutes a slide type discharge valve mechanism.

In the middle of the liquid discharge passage 31, in this embodiment, an orifice 33 is provided at the rear end of the receiving opening 32 of the second shaft portion 17 into which the upper end of the first shaft portion 16 is inserted. An air discharge passage 34 that communicates between the front position and the air chamber 4 is provided.

The orifice 33 has a linear shape on the inlet side and a tapered shape on the outlet side opening toward the tip. A ring 35 having an inner diameter substantially equal to the inner diameter of the orifice outlet is mounted on the outlet side, and the first mesh member 36 is arranged via this ring 35. The first mesh member 35 is a member for uniformly adjusting the bubbles, and a second finer mesh is provided at a position separated from the first mesh member 35 by a predetermined distance, in this embodiment, in front of the ejector head 18. The mesh member 37 is provided.

The air discharge passage 34 includes a second passage 39 on the orifice 33 side formed at a connecting portion between the second shaft portion 17 and the first shaft portion 16, the sleeve 20 of the piston member 15, and the first shaft portion 1. 6 and a first passage 38 on the side of the air chamber 4 formed between the first and second passages 38 and 39, and the first and second passages 38 and 39 form the flange portion 23 of the second shaft portion 17 and the air piston portion 19, respectively. Connected between the facing surfaces of the.

The first passage 38 has an inner circumference of the sleeve 20 and an outer circumference of a small diameter portion of the first shaft portion 16 in which the upper half of the first shaft portion 16 inserted into the sleeve 20 of the piston member 15 is slightly smaller in diameter than the lower half. It is constituted by an annular gap formed between them. A through hole 40 that opens to the air chamber 4 is formed in the middle of the sleeve 20, and the reciprocal stroke of the first shaft portion 16 opens and closes the through hole 40. That is, the through hole 40 is normally closed by the large diameter portion, and when the operating member 3 is pushed down and the first flow path 38 matches the through hole 40, the through hole 40 opens, and the slide type air discharge valve is provided. It constitutes the mechanism.

In the second passage 39, a plurality of grooves 41 as shown in FIG. 1B are engraved on the inner circumference of the receiving opening 32 of the second shaft portion 17, and the grooves 41 and the outer circumference of the first shaft portion 16 are formed. It is composed of a gap between the surface and the surface. The groove 41 is continuously formed on the inner peripheral surface of the receiving port 32 and the rear end surface 43, and the radial gap formed between the groove provided on the rear end surface 43 and the end surface of the first shaft portion 16 is a liquid. A plurality of air ejection ports 44 are formed by opening the discharge passage 31.

On the opposing surface of the flange portion 23 of the second shaft portion 17 to which the first passage 38 and the second passage 39 are connected and the air piston portion 19, the seal concave portion 45 and the seal convex portion which can be engaged and disengaged from each other are provided. 46 is provided, and when the operating shaft portion 14 is pushed in, the seal concave portion 45 and the seal convex portion 46 engage with each other to connect the first and second passages 38, 39. On the other hand, in the free state, the spring force of the second spring member 24 causes the first and second passages 38 and 39 to be separated and not connected.

Further, the negative pressure generated inside the air chamber 4 is eliminated through the clearance between the operation shaft portion 14 and the piston member 15 which communicate the inside and outside of the air chamber 4. At first, it may be configured to open and close by providing a ventilation hole.

A vent hole 48 is formed at the upper end of the air cylinder 5 to prevent the container from being deformed under reduced pressure.

In the present invention, the operation member 3 contracts the volumes of the liquid chamber 25 and the air chamber 4 to compress the liquid and the air, thereby causing the liquid to flow into the liquid discharge passage 31 and the air to the liquid. The plurality of ejection ports 44 opened in the discharge passage 31 radially inject into the liquid from the periphery to the center, and the air is bubbled in a state of being uniformly dispersed from the periphery of the liquid.

Further, when it is taken into the orice 33 in a foamed state and the flow velocity is rapidly increased, the flow is also disturbed and the air and the liquid are sufficiently agitated and mixed. The liquid changes to an almost foamy state.

Furthermore, the first and second mesh members 36 and 37 on the outlet side of the orifice 33 finely crush the bubbles in stages to make them uniform in size.

FIG. 2 shows a second embodiment of the present invention.

This is because, in the first embodiment, when the bubble jet pump is used, the container is deformed under reduced pressure, and since the outside air is sucked into the container through the bubble jet pump, the container cannot be used only when it is upright. . Therefore, as shown in FIG. 3, a double-structured container is used as the container 50, and the ventilation hole 48 provided in the air cylinder portion 5 of the pump body 2 is closed to make the pump airless, and the pump is completely deformed without decompression deformation. This enables directional discharge.

The container 50 is composed of an outer outer bottle 51 having rigidity and a flexible inner bottle 52 provided in the outer bottle 51. The outer bottle 51 retains its shape, and the inner bottle 52 contains the liquid in a sealed state and shrinks as the liquid volume decreases.

Since the structure for generating bubbles is exactly the same as that of the first embodiment, the same components will be denoted by the same reference numerals and the description thereof will be omitted. Only the different points will be described below.

In the second embodiment, the intake valve 53 with a spring is used as the intake valve as shown in FIG. 2A so that the intake valve operates even when the device is used upside down. That is, the intake valve with spring 53 is provided with a valve body 55 that contacts and separates from the valve seat 54, and a spring 56 that constantly presses the valve body 55 against the valve seat 54 with a predetermined load. Has become. Further, in this embodiment, the valve body 55 is provided with the stopper portion 57 projecting in the direction opposite to the valve seat 54, and is fixed in the closed state by the first shaft portion 16 of the operation member 3 when locked. ing. An opening 58 is formed in the peripheral wall of the stopper portion 57 so as to have elasticity in the twisting direction.

As for the structure of the suction valve, it is only necessary to maintain a normally closed state when it is used upside down. For example, as shown in FIG. 2B, a ball valve 59 (may be made of plastic) with a limited movement range is used. be able to. This ball valve 59 is provided with a second valve seat 62, which becomes a valve seat when the valve body 61 abuts when inverted, above the first valve seat 60 when the valve body 61 is upright. It is configured to seal with.

The bubble jet pump of the second embodiment basically does not require the pipe 8 as in the first embodiment, but the suction pillar 63 may be used to reduce the residual liquid amount. . In this embodiment, as shown in FIG. 3C, the suction pillar 63 has a cross-shaped cross section.

[0042]

[Effect of device]

 The present invention has the above-described configuration and operation. Since air is sprayed into a liquid to be uniformly dispersed, and further taken into an orice to mix the air and the liquid sufficiently with stirring, the liquid and the air are mixed. It is possible to generate bubbles with a uniform mixing ratio.

In particular, if a plurality of air ejection ports are radially provided, it is possible to mix the air and the liquid more uniformly and efficiently.

Further, by providing a mesh member on the outlet side of this orifice, it is possible to generate finer bubbles in combination with the fact that the mixing ratio of air is uniform.

[Brief description of drawings]

FIG. 1 shows a foam jet pump according to a first embodiment of the present invention. FIG. 1 (a) is a longitudinal sectional view and FIG. 1 (b) is a view showing a structure of an air jet port. .

2A and 2B show a foam jet pump according to a second embodiment of the present invention, wherein FIG. 2A is a longitudinal sectional view and FIG. 2B is a diagram showing another configuration example of a liquid suction valve. Is.

3 (a) and 3 (b) are sectional views showing a state before and after using the foam jet pump of FIG. 2, and FIG. 3 (c) is a sectional view taken along line CC of FIG. 3 (a). It is a figure.

FIG. 4 is a vertical cross-sectional view of a conventional foam jet pump.

[Explanation of symbols]

 1 Bubble Jet Pump 2 Pump Body 3 Operation Member 4 Air Chamber 5 Air Cylinder Section 6 Liquid Cylinder Section 7 Container 14 Operation Shaft Section 15 Piston Member 19 Air Piston Section 20 Sleeve 21 First Spring Member 24 Second Spring Member 25 Liquid Chamber 26 Intake valve 27 Valve body 31 Liquid discharge passage 32 Receiving port 33 Orifice 34 Air discharge passage 38, 39 First and second passage 40 Through hole 41 Groove 44 Air jet outlet

Claims (3)

[Scope of utility model registration request] 1. An internal hollow pump main body equipped with a liquid chamber for pumping up and storing liquid inside a container and an air chamber for filling with air, and a movable pump body movably in the pump main body. An operating member that is assembled to expand and contract the volumes of the liquid chamber and the air chamber in conjunction with each other, wherein the operating member has a liquid discharge passage for discharging the liquid in the liquid chamber to the outside. An air discharge passage for ejecting the air in the air chamber to the liquid discharge passage, and compressing the liquid and the air by compressing the volumes of the liquid chamber and the air chamber by the operating member, A bubble jet pump for flowing liquid and jetting air into the liquid through the air discharge passage to mix air into the liquid and jet bubbles, wherein an orifice is provided in the liquid discharge passage, Foam jet pump, characterized in that the front position is provided an air ejection port of the air discharge passage. 2. The foam jet pump according to claim 1, wherein a plurality of air jet ports are radially provided. 3. The foam jet pump according to claim 1, wherein a mesh member for finely adjusting the foam is arranged on the outlet side of the orifice with a predetermined distance from the orifice.