All-plastic external foam pump and foam generating method thereof

An all-plastic external foam pump, including an actuator, a fixing member, a plunger, an elastic member, a cylinder body, and a straw, is provided. One end of the fixing member is fixed or detachably connected to the actuator, and the other end is fixed or detachably connected to the plunger. The fixing member is at least partially accommodated in the cylinder body. One end of the plunger is penetrated into the elastic member. The straw is installed on one end of the cylinder body. A pulling rod is disposed in the plunger. The pulling rod is disposed in linkage with the plunger. The elastic member is made of a recyclable elastic material. A liquid mixing portion is disposed in the fixing member.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a 371 of international application of PCT application serial no. PCT/CN2021/123226, filed on Oct. 12, 2021, which claims the priority benefit of China application no. 202110683149.4, filed on Jun. 21, 2021. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.

TECHNICAL FIELD

The disclosure relates to the technical field of foam pumps, and in particular to an all-plastic external foam pump and a foam generating method thereof.

DESCRIPTION OF RELATED ART

With the progress of society, more and more products that can facilitate daily lives of people are now widely used in the lives of people. Now, people are more concerned about their own health and hygiene issues. In order to keep the body clean, people are accustomed to cleaning with some cleaning liquids when washing their hands, faces, or bathing nowadays. In order to meet the demand of people, there are a great number of cleaning liquids such as face wash, hand soap, and shower gel on the market. For convenience of use, the liquids are generally placed in bottle-like containers, and people extrude the liquids in the containers through pressing the actuators for use.

Currently, such type of foam pumps all adopt metal springs as reset components. After a liquid is taken out, each component of the foam pump restores to the original position due to the restoration from deformation of the metal spring. However, when the foam pump needs to be recycled after being used, since the foam pump is made of plastic materials except for the metal spring, when recycling, it is necessary to first disassemble the entire foam pump, and then separately recycle the metal spring and other materials of the foam pump, which makes the whole recycling work cumbersome, increases working time, and reduces working efficiency.

SUMMARY

Based on this, it is necessary to provide an all-plastic external foam pump that can implement quick recycling and a foam generating method thereof.

An all-plastic external foam pump includes an actuator, a fixing member, a plunger, an elastic member, a cylinder body, and a straw. One end of the fixing member is fixed or detachably connected to the actuator, and other end is fixed or detachably connected to the plunger. The fixing member is at least partially accommodated in the cylinder body. One end of the plunger is penetrated into the elastic member. The straw is installed on one end of the cylinder body. A pulling rod is disposed in the plunger. The pulling rod is disposed in linkage with the plunger. The elastic member is made of a recyclable elastic material. A liquid mixing portion is disposed in the fixing member.

In an embodiment, the elastic member includes an upper elastic portion, a lower elastic portion, and a fixing ring. The upper elastic portion and the lower elastic portion are fixedly connected by the fixing ring.

In an embodiment, the elastic member includes a first elastic member and a second elastic member. The first elastic member and the second elastic member are an axisymmetric integral molding structure.

In an embodiment, the elastic member is an egg-shaped structure.

In an embodiment, one end of the cylinder body has a glass bead.

In an embodiment, the elastic member is made of a plastic material.

In an embodiment, the foam pump further includes an elastic member fixing base. The elastic member fixing base is installed in the cylinder body.

In an embodiment, the foam pump further includes a filter member. One end of the filter member is fixedly connected to the fixing member. A filter net is disposed in the filter member.

A foam generating method of an all-plastic external foam pump includes the following steps.

In S1, an actuator is pressed, so that the actuator moves toward an elastic member.

In S2, the actuator drives a fixing member to move toward the elastic member.

In S3, the fixing member drives a plunger to move toward the elastic member.

In S4, the plunger compresses the elastic member to deform the elastic member, so that a gas in a cylinder body enters a liquid mixing portion.

In S5, one end of the plunger is located in a small cylinder of the cylinder body while driving a pulling rod to move toward a straw.

In S6, a liquid enters the liquid mixing portion through a gap between the plunger and the pulling rod.

In S7, a foam flows out from the actuator.

In an embodiment, the elastic member fully fills an inner space of the cylinder body.

In the all-plastic external foam pump and the foam generating method thereof, through using the elastic member made of the recyclable elastic material, when the actuator is pressed down, the actuator drives the plunger to press down, so that the elastic member is deformed and fully compresses the inner space of the cylinder body, so that the gas in the cylinder body enters the liquid mixing portion. At the same time, one end of the plunger enters the small cylinder of the cylinder body while driving the pulling rod to move toward the straw. The liquid enters the liquid mixing portion through the gap between the plunger and the pulling rod. The foam flows out from the actuator. Since the elastic member is made of the recyclable bomb material, the elastic member may be recycled together with the foam pump during recycling, which is simple and convenient, and improves working efficiency. Moreover, the elastic member deforms and fully fills the inner space of the cylinder body, so that more gas may enter the liquid mixing portion, which enables the effect of the extruded foam to be better.

DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS

In order for the above objectives, features, and advantages of the disclosure to be more clearly understood, the specific implementations of the disclosure will be described in detail below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the disclosure. However, the disclosure can be implemented in many other ways different from those described herein, and persons skilled in the art can make similar improvements without departing from the connotation of the disclosure. Therefore, the disclosure is not limited by the specific embodiments disclosed below.

It should be noted that when an element is referred to as being “connected” to another element, the element be directly connected to the other element or there may also be an intervening element. In contrast, when an element is referred to as being “directly” connected to another element, there is no intervening element.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by persons skilled in the art to which the disclosure belongs. The terms used herein in the description of the disclosure are for the objective of describing specific implementations only and are not intended to limit the disclosure. As used herein, the term “and/or” includes any and all combinations of one or more of relevant listed items.

As shown inFIG.1, an all-plastic external foam pump includes an actuator100, a fixing member200, a plunger300, an elastic member400, a cylinder body500, and a straw600. One end of the fixing member200is fixed or detachably connected to the actuator100, and the other end is fixed or detachably connected to the plunger300. The fixing member200is at least partially accommodated in the cylinder body500. One end of the plunger300is penetrated into the elastic member400. The straw600is installed on one end of the cylinder body500. A pulling rod310is disposed in the plunger300. The pulling rod310is disposed in linkage with the plunger300. The elastic member400is made of a recyclable elastic material. A liquid mixing portion210is disposed in the fixing member200.

As shown inFIG.2, in an embodiment, the elastic member400includes an upper elastic portion410, a lower elastic portion420, and a fixing ring430. The upper elastic portion410and the lower elastic portion420are fixedly connected by the fixing ring430.

As shown inFIG.3, in an embodiment, the elastic member400includes a first elastic member440and a second elastic member450. The first elastic member440and the second elastic member450are an axisymmetric integral molding structure.

In an embodiment, the elastic member400is an egg-shaped structure.

In an embodiment, one end of the cylinder body500has a glass bead700.

In an embodiment, the elastic member400is made of a plastic material.

In an embodiment, the foam pump further includes an elastic member fixing base800.

The elastic member fixing base800is installed in the cylinder body500.

In an embodiment, the foam pump further includes a filter member900. One end of the filter member900is fixedly connected to the fixing member200. A filter net is disposed in the filter member900.

A foam generating method of an all-plastic external foam pump includes the following steps.

In S1, the actuator100is pressed, so that the actuator100moves toward the elastic member400.

In S2, the actuator100drives the fixing member200to move toward the elastic member400.

In S3, the fixing member200drives the plunger300to move toward the elastic member400.

In S4, the plunger300compresses the elastic member400to deform the elastic member400, so that a gas in the cylinder body500enters the liquid mixing portion210.

In S5, one end of the plunger300is located in a small cylinder510of the cylinder body500while driving the pulling rod310to move toward the straw600.

In S6, a liquid enters the liquid mixing portion210through a gap between the plunger300and the pulling rod310.

In S7, a foam flows out from the actuator100.

In an embodiment, the elastic member400fully fills an inner space of the cylinder body500.

It should be noted that the elastic member400is made of the recyclable elastic material, wherein the recyclable elastic material is a conventional material and is recyclable. In an initial state, a predetermined amount of liquid is disposed in the small cylinder510of the cylinder body500.

In Embodiment 1, the elastic member400is a split structure and includes the upper elastic portion410, the lower elastic portion420, and the fixing ring430. The upper elastic portion410and the lower elastic portion420are fixedly connected by the fixing ring430. In the embodiment, the upper elastic portion410and the lower elastic portion420are both bowl-shaped structures. The upper elastic portion410and the lower elastic portion420are buckled upside down together and are fixedly connected together by the fixing ring430.

When the foam needs to be obtained, the actuator100is pressed, so that the actuator100moves toward the elastic member400. The actuator100compresses the fixing member200to move toward the elastic member400. The fixing member200compresses the plunger300to move toward the elastic member400. The plunger300compresses the upper elastic portion410. The lower elastic portion420abuts against the cylinder body500, so that the upper elastic portion410and the lower elastic portion420are deformed to fully fill the inner space of the cylinder body500, so that the gas in the cylinder body500enters the liquid mixing portion210. One end of the plunger300is located in the small cylinder510of the cylinder body500while driving the pulling rod310to move toward the straw600. At this time, there is a certain gap between the plunger300and the pulling rod310. At this time, there is a certain amount of liquid in the small cylinder510. The liquid enters the liquid mixing portion210through the gap between the plunger300and the pulling rod310. The foam flows out from the actuator100. The actuator100is released, and the elastic member400restores from deformation, so that other components restore to original positions.

In Embodiment 2, the elastic member400includes the first elastic member440and the second elastic member450. The first elastic member440and the second elastic member450are an integral molding structure. In the embodiment, the first elastic member440and the second elastic member450are both bowl-shaped structures, which is the integral molding structure with opposite bowl bottoms. Since bowl mouths are respectively outward, the bowl mouths may be made into the integral molding structure.

When the foam needs to be obtained, the actuator100is pressed, so that the actuator100moves toward the elastic member400. The actuator100compresses the fixing member200to move toward the elastic member400. The fixing member200compresses the plunger300to move toward the elastic member400. The plunger300compresses the first elastic member440. The second elastic member450abuts against the cylinder body500, so that the first elastic member440and the second elastic member450are deformed to fully fill the inner space of the cylinder body500, so that the gas in the cylinder body500enters the liquid mixing portion210. One end of the plunger300is located in the small cylinder510of the cylinder body500while driving the pulling rod310to move toward the straw600. At this time, there is a certain gap between the plunger300and the pulling rod310. At this time, there is a certain amount of liquid in the small cylinder510. The foam enters the liquid mixing portion210through the gap between the plunger300and the pulling rod310. The foam flows out from the actuator100.

In this way, in an all-plastic external foam pump, through using the elastic member400made of the recyclable elastic material, when the actuator100is pressed down, the actuator100drives the plunger300to press down, so that the elastic member400is deformed and fully compresses the inner space of the cylinder body500, so that the gas in the cylinder body500enters the liquid mixing portion210. At the same time, one end of the plunger300enters the small cylinder510of the cylinder body500while driving the pulling rod310to move toward the straw600. The liquid enters the liquid mixing portion210through the gap between the plunger300and the pulling rod310. The foam flows out from the actuator100. Since the elastic member400is made of the recyclable elastic material, the elastic member400may be recycled together with the foam pump during recycling, which is simple and convenient, and improves working efficiency. Moreover, the elastic member400is deformed and fully fills the inner space of the cylinder body500, so that more gas may enter the liquid mixing portion, which enables the effect of the extruded foam to be better.

In order to control the liquid entering the foam pump, one end of the cylinder body500has the glass bead700.

In this way, when the foam needs to be obtained, one end of the plunger300is located in the small cylinder510of the cylinder body500while driving the pulling rod310to move toward the straw600to compress the glass bead700at a connecting portion between the small cylinder510and the straw600, so that an external liquid does not enter the foam pump. When the actuator100is no longer pressed, the elastic member400restores from deformation. One end of the plunger300moves toward the actuator100. The glass bead700moves toward the plunger300under the pressure of the external liquid. The liquid enters the small cylinder510. The configuration of the glass bead700facilitates the liquid in entering the foam pump.

Further, in order to facilitate fixing the elastic member400, the foam pump further includes the elastic member fixing base800.

In this way, through fixing the elastic member400on the elastic member fixing base800, the elastic member400does not move randomly, so that the foam pump may be used normally.

Further, in order to obtain a better foam effect, the foam pump further includes the filter member900.

In this way, one end of the filter member900is fixedly connected to the fixing member200. The filter net is disposed in the filter member900. After a gas-liquid mixed liquid enters the filter member900from the liquid mixing portion210, after being filtered by the filter net, the generated foam is denser and has better effect.

The technical features of the above embodiments may be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction between the combinations of the technical features, all should be regarded as being within the scope of the disclosure.

The above embodiments only represent several implementations of the disclosure, and the description thereof is specific and detailed, but should not be construed as a limitation to the scope of the disclosure. It should be pointed out that for persons skilled in the art, without departing from the concept of the disclosure, several modifications and improvements may also be made, which all belong to the protection scope of the disclosure. Therefore, the protection scope of the disclosure should be defined by the appended claims.