CN210102437U

CN210102437U - Spring foam pump and packaging container

Info

Publication number: CN210102437U
Application number: CN201920610880.2U
Authority: CN
Inventors: 张国金
Original assignee: Zhuhai Zhirun Nursing Products Co Ltd
Current assignee: Zhuhai Zhirun Nursing Products Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-21
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a spring foam pump, which comprises a shell and a pressing head movably arranged at the upper end of the shell, wherein a foam channel is arranged in the pressing head, a spring is sleeved outside the foam channel, one end of the spring is abutted against the pressing head, the other end of the spring is abutted against the shell, and in the foaming process, fluid and foam can not contact the spring, so that the spring can be prevented from polluting fluid, and the spring is prevented from rusting easily in the fluid to influence the use performance; the inside gas-liquid mixture chamber that is equipped with in upper end of shell, lower extreme are equipped with liquid pump room and air pump room, and gas-liquid mixture chamber and foam passage intercommunication, and can communicate with liquid pump room and air pump room respectively, are equipped with liquid pump piston and air pump piston in the liquid pump room and the air pump room respectively, and the integrative setting of air pump piston is on the liquid pump piston, and the lower extreme of press head can promote the upper end of liquid pump piston. Also disclosed is a packaging container comprising a container capable of containing a fluid and the spring foam pump described above, the housing being mounted on the container, the liquid pump chamber and the gas pump chamber extending into the container interior.

Description

Spring foam pump and packaging container

Technical Field

The utility model relates to a foam pump technical field especially relates to a spring foam pump, still designs an packing container who uses spring foam pump.

Background

In the field of cosmetics, foam cosmetics are widely applied in daily life, and people can contain different fluids in cosmetic bottles according to needs, and the fluids are extruded and sprayed to form foam, and the foam cosmetics are often used for moisturizing or beautifying. In addition, the foam washing and caring product is widely applied to life, such as bubble bath lotion and bubble shampoo.

Cosmetic bottle, shower cream bottle, shampoo bottle that market sold at present can extrude the foam through pressing owing to need, so need be equipped with the spring and be used for the restoration after pressing. The spring of the container bottle sold on the market is placed in the fluid flow channel, which is a traditional structure and is the most common one on the market. The disadvantage of this construction is that the spring is in contact with the fluid for a long time, runs the risk of rusting, and contaminates the fluid, which is not allowed for the more demanding industries.

Besides, there is also an air pump type foam pump on the market, which is a structure with high requirement on sealing performance, and is realized by filling air and adding fluid into a bottle, and when the air pump type foam pump is used, a valve can be opened by pressing a head part, but the structure is complex and the cost is too high. And the safety protection pad is used at normal temperature, and has the risk of explosion in the environment of high temperature and open fire or in the case of air leakage, so that the safety protection pad is not safe enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a packaging container, which adopts a spring foam pump, and the spring can not pollute fluid and is safe to use.

The utility model provides a technical scheme that its technical problem adopted does:

the utility model provides a spring foam pump, includes the shell and locates the press head of shell upper end with moving about, be equipped with the foam passageway in the press head, foam passageway overcoat is equipped with the spring, the one end butt press head of spring, other end butt shell, the inside gas-liquid mixing chamber that is equipped with in upper end of shell, lower extreme are equipped with liquid pump room and air pump room, gas-liquid mixing chamber and foam passageway intercommunication, just the gas-liquid mixing chamber can communicate with liquid pump room and air pump room respectively, be equipped with liquid pump piston and air pump piston in liquid pump room and the air pump room respectively, the integrative setting of air pump piston is on the liquid pump piston, the lower extreme of press head can promote the upper end of liquid pump piston.

As an improvement of the above technical scheme, a vertical guide groove is formed in the housing or the pressing head, a guide strip is correspondingly arranged on the pressing head or the housing, an arc-shaped limiting groove is formed in the side wall of the vertical guide groove along the circumferential direction, the vertical guide groove is communicated with the limiting groove, and the limiting groove is located at one end close to the guide strip.

As an improvement of the technical scheme, the cambered surface of the limiting groove is provided with a limiting bulge.

As an improvement of the above technical solution, the air pump further comprises a piston body, the piston body comprises the air pump piston and the liquid pump piston arranged in the center of the air pump piston, the air pump piston is provided with an air hole, the air hole is communicated with the air pump chamber, the air hole can be communicated with the gas-liquid mixing chamber, the liquid pump piston is provided with a liquid passage in the center, the liquid passage is communicated with the liquid pump chamber, and the liquid passage can be communicated with the gas-liquid mixing chamber.

As an improvement of the technical scheme, the piston body further comprises a tubular column arranged at the upper end of the liquid pump piston, a plurality of vent grooves are formed in the inner wall and the outer wall of the tubular column, gas in the air pump chamber can enter the tubular column through the air hole, the vent groove in the outer wall of the tubular column and the vent groove in the inner wall of the tubular column, and the tubular column is communicated with the foam channel.

As an improvement of the above technical solution, a gas control member is disposed between the pressing head and the piston body, an upper end of the gas control member is fixedly connected to the pressing head, the gas control member includes a first sealing tube disposed at a lower end and a second sealing tube sleeved outside the first sealing tube, the first sealing tube is hermetically connected to an upper end of the second sealing tube, the tubular column is disposed between the first sealing tube and the second sealing tube, and the first sealing tube is communicated with the foam channel.

As the improvement of the technical scheme, the upper end face of the air pump piston is provided with the raised annular sealing strip along the circumferential direction, the annular sealing strip is arranged on one side of the air hole far away from the center of the air pump piston, the outer side of the second sealing tube is provided with the ring platform, the lower end of the ring platform is provided with the annular sealing groove, and the annular sealing groove can be clamped or avoided.

As an improvement of the technical scheme, an inverted funnel ring is arranged inside the upper end of the liquid pump piston, a valve core is arranged in the tubular column, the upper end of the valve core is fixedly connected with the pressing head, and a circular table is arranged at the lower end of the valve core and can block or avoid the funnel ring.

As the improvement of the technical scheme, a liquid passing pipe is arranged at the lower end of the liquid pump chamber, a valve hole and a valve piece are arranged in the liquid passing pipe, the valve piece is arranged above the valve hole, and the valve piece can be blocked or avoided.

A packaging container comprises a container capable of containing fluid and the spring foam pump, wherein the shell is mounted on the container, the liquid pump chamber and the gas pump chamber extend into the container, and the liquid pump chamber can be communicated with the container.

The beneficial effects of the utility model are that:

the packaging container uses the spring foam pump, under the pushing of the pressing head, the liquid pump piston and the gas pump piston respectively force the fluid and the gas in the liquid pump chamber and the gas pump chamber to enter the gas-liquid mixing chamber to form foam, and under the pressure action, the foam flows out after passing through the foam channel, the sealing requirement is not very high, the packaging container can be used in various environments, meanwhile, the container bottle does not need to be pressurized, the risk of explosion does not exist, and the packaging container is very safe; moreover, the spring is sleeved outside the foam channel of the pressing head, the two ends of the spring are respectively abutted against the pressing head and the shell, and in the process of discharging foam, fluid and foam can not contact the spring, so that the spring can be prevented from polluting the fluid, and the spring is prevented from being easily rusted to influence the service performance when being soaked in the fluid; in addition, among the present foam pump, air pump piston and liquid pump piston are split type structure, in order to let the press head at the in-process that removes, can drive air pump piston and liquid pump piston and remove, need set up complicated linkage between air pump piston and the liquid pump piston, and the utility model discloses an air pump piston is integrative with the liquid pump piston and sets up, has saved middle complicated linkage for the product part reduces, and the structure is simpler, convenient equipment, reduce cost.

Drawings

The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:

FIG. 1 is a schematic structural diagram of a spring foam pump according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of an outer shell in an embodiment of the present invention;

fig. 4 is a schematic view of the pressing head according to the embodiment of the present invention.

Detailed Description

Referring to fig. 1, the present invention discloses a packaging container, which comprises a container capable of containing fluid and a spring foam pump, wherein the housing 1 is installed on the container, the liquid pump chamber 5 and the gas pump chamber 6 extend into the container, and the liquid pump chamber 5 can be communicated with the container.

The utility model also discloses a spring foam pump, include shell 1 and the press head 2 of locating the shell upper end with moving about, be equipped with foam passageway 21 in the press head, foam passageway 21 overcoat is equipped with spring 3, the one end butt press head of spring 3, other end butt shell 1, the inside gas-liquid mixture chamber 4 that is equipped with in upper end of shell 1, the lower extreme is equipped with liquid pump room 5 and gas pump room 6, gas-liquid mixture chamber 4 and foam passageway 21 intercommunication, and gas-liquid mixture chamber 4 respectively can communicate with liquid pump room 5 and gas pump room 6, be equipped with liquid pump piston 71 and air pump piston 72 in liquid pump room 5 and the gas pump room 6 respectively, air pump piston 72 an organic whole sets up on liquid pump piston 71, the lower extreme of press head 2 can promote the upper end of liquid pump piston 71.

The packaging container uses the spring foam pump, under the push of the pressing head 2, the liquid pump piston 71 and the gas pump piston 72 respectively force the fluid and the gas in the liquid pump chamber 5 and the gas pump chamber 6 to enter the gas-liquid mixing chamber 4 to form foam, and under the pressure action, the foam flows out after passing through the foam channel 21, the sealing requirement is not very high, the packaging container can be used in various environments, meanwhile, the pressure in the container bottle is not required, the risk of explosion does not exist, and the packaging container is very safe; moreover, the spring 3 is sleeved outside the foam channel of the pressing head 2, two ends of the spring are respectively abutted against the pressing head 2 and the shell 1, and in the foam discharging process, fluid and foam cannot contact the spring 3, so that the spring 3 can be prevented from polluting the fluid, and the spring 3 is prevented from being easily rusted to influence the use performance after being soaked in the fluid; in addition, among the present foam pump, air pump piston and liquid pump piston are split type structure, in order to let the press head at the in-process that removes, can drive air pump piston and liquid pump piston and remove, need set up complicated linkage between air pump piston and the liquid pump piston, and the utility model discloses an air pump piston 72 and liquid pump piston 71 are integrative to be set up, have saved middle complicated linkage for the product part reduces, and the structure is simpler, convenient equipment, reduce cost.

With further reference to fig. 3 and 4, a vertical guide groove 11 is formed in the housing 1 or the pressing head 2, a guide bar 22 is correspondingly formed in the pressing head 2 or the housing 1, an arc-shaped limiting groove 12 is formed in the side wall of the vertical guide groove 11 along the circumferential direction, the vertical guide groove 11 is communicated with the limiting groove 12, and the limiting groove 12 is located at one end close to the guide bar 22. In order to prevent the pressing head 2 from rotating and losing the self-locking function in the moving process, a limiting protrusion 13 is arranged on the arc surface of the limiting groove 12.

Thus, when the pressing head 2 is in a non-self-locking state, the pressing head 2 is pressed or loosened, the guide strip 22 can only slide up and down in the vertical guide groove 11, and the rotation of the pressing head 2 is limited by the arrangement of the guide strip 22 and the vertical guide groove 11; when the pressing head 2 is rotated to be in a self-locking state, one end of the guide strip 22 is abutted to the bottom of the limiting groove 12, the limiting groove 12 limits the up-down movement of the pressing head 2, and the limiting protrusion 13 limits the rotation of the pressing head 2.

In this embodiment, the vertical guide groove 11 is provided in the housing 1, the guide strip 22 is provided on the pressing head 2, and the stopper groove 12 is located at the upper end of the housing 1. Thus, when the spring is in a natural state, namely, in a state that the pressing head 2 is not pressed down, the pressing head 2 is rotated, so that the lower end of the guide strip 22 is rotated into the limiting groove 12 and is rotated to the other side of the limiting protrusion 13 through the limiting protrusion 13, at the moment, the pressing head 2 cannot move upwards or downwards or cannot rotate by itself, and the self-locking function of the pressing head 2 is realized. The use of traditional foam pump is prevented pressing and is pressed the clamp and reach the purpose of pinning the press head 2, and the auto-lock structure has replaced preventing pressing and has pressed the clamp for the product part reduces, and the structure is simpler, is convenient for produce, moulds plastics, equipment, with this reduction manufacturing cost. The pressing head 2 is locked when not in use and opened when in use, so that the problems of liquid leakage, fluid oxidation and the like caused by extrusion when the pressing head 2 is transported, carried and stored can be effectively avoided, and inconvenience caused by loss of the pressure clamp is avoided.

Specifically, in the present embodiment, the housing 1 includes a threaded portion 14 capable of being fitted to the container, and an annular portion 15 provided at an upper end of the threaded portion 14, an upper end of the threaded portion 14 communicates with an inside of the annular portion 15, and the annular portion 15 communicates with outside air. The pressing head 2 includes the foam passage 21 and the outer cylinder 23 which are coaxially arranged, and a foam outlet 24 which is communicated with the foam passage 21, and the annular portion 15 can slide up and down between the foam passage 21 and the outer cylinder 23. The outer wall of the circular part 15 is provided with two vertical guide grooves 11, wherein the width of one vertical guide groove 11 is larger than that of the other vertical guide groove 11. The inner wall of urceolus 23 corresponds and is equipped with three gib block 22, and wherein two gib blocks 22 correspond relative wide vertical guide way 11, and another gib block 22 corresponds relative narrow vertical guide way 11, and the setting of two vertical guide ways 11 that the width is different can effectually prevent when the installation of press head 2, is installed reversely.

Further referring to fig. 2, the spring foam pump further includes a piston body 7 disposed inside the threaded portion 14, the piston body 7 includes the air pump piston 72 and the liquid pump piston 71 disposed at the center of the air pump piston 72, the air pump piston has an air hole 73, the air hole 73 communicates with the air pump chamber 6, and the air hole 73 can communicate with the gas-liquid mixing chamber 4, the liquid pump piston 71 has a liquid passage 74 at the center, the liquid passage 74 communicates with the liquid pump chamber 5, and the liquid passage 74 can communicate with the gas-liquid mixing chamber 4. Thus, the gas in the gas pump chamber 6 can enter the gas-liquid mixing chamber 4 through the gas hole 73, the fluid in the liquid pump chamber 5 can enter the gas-liquid mixing chamber 4 through the liquid passage 74, the gas and the fluid are mixed to form foam, and the foam passes through the foam passage 21 and flows out from the foam outlet 24.

Specifically, the piston body 7 further includes a column 75 disposed at the upper end of the liquid pump piston 71, the inner wall and the outer wall of the column 75 are both provided with a plurality of vent grooves 76, the gas in the gas pump chamber 6 can enter the column 75 through the gas hole 73, the vent grooves 76 of the outer wall of the column and the vent grooves 76 of the inner wall of the column, and the column 75 is communicated with the foam passage 21. The gas-liquid mixing chamber 4 is located at the inner lower end of the pipe string 75.

Moreover, an air control member 8 is arranged between the pressing head 2 and the piston body 7, the upper end of the air control member 8 is fixedly connected with the pressing head 2, specifically, the upper end of the air control member 8 is clamped in the foam passage 21, the air control member 8 comprises a first sealing pipe 81 arranged at the lower end and a second sealing pipe 82 sleeved outside the first sealing pipe, the upper ends of the first sealing pipe 81 and the second sealing pipe 82 are connected in a sealing manner, the pipe column 75 is arranged between the first sealing pipe 81 and the second sealing pipe 82, the inner wall and the outer wall of the pipe column 75 are respectively contacted with the outer wall of the first sealing pipe 81 and the inner wall of the second sealing pipe 82, and the first sealing pipe 81 is communicated with the foam passage 21.

Thus, the piston body 7 moves downward, and the gas in the gas pump chamber 6 can enter the gap between the inner wall of the second seal pipe 82 and the outer wall of the stem 75, i.e., the vent groove 76 of the outer wall of the stem, from the lower end of the second seal pipe 82 through the gas hole 73, reach the inside of the upper ends of the first seal pipe 81 and the second seal pipe 82, and then enter the gas-liquid mixing chamber 4 inside the stem 75 from the upper end of the first seal pipe 81 along the gap between the outer wall of the first seal pipe 81 and the inner wall of the stem 75, i.e., the vent groove 76 of the inner wall of the stem.

Further, the lower end inside of the annular portion 15 is provided with a through hole 16, and the upper end inside of the threaded portion 14 is communicated with the outside air through the through hole 16, that is, the outside air can enter the air pump chamber 6 through the through hole 16 and the air hole 73.

In order to block the communication between the air hole 73 and the outside air when the pressing head 2 is pressed down, the upper end surface of the air pump piston 72 is circumferentially provided with a raised annular sealing strip 77, the annular sealing strip 77 is arranged on one side of the air hole 73, which is far away from the center of the air pump piston 72, the outer side of the second sealing tube 82 is provided with a ring platform 83, the ring platform 83 is positioned between the upper ends of the air pump piston 72 and the thread part 14, the lower end of the ring platform 83 is provided with an annular sealing groove 84, and the annular sealing groove 84 can be clamped or avoided from the annular sealing strip 77. The side wall of the upper end of the air pump chamber 6 is provided with a small hole 61, the air pump piston 72 can seal or avoid the small hole 61, and the container can be communicated with the inside of the upper end of the thread part 14 through the small hole 61.

Thus, the pressing head 2 is pressed down, the pressing head 2 pushes the air control part 8 to move downwards, the annular table 83 moves downwards, the annular sealing strip 77 is clamped and connected to block the communication between the air hole 73 and the inner part of the upper end of the threaded part 14, then, the air control part 8 pushes the air pump piston 72 to move downwards, air in the air pump chamber 6 is extruded, the air cannot overflow to the outside air through the air hole 73 and the through hole 16, and the air can enter the vent groove 76 on the outer wall of the pipe column through the air hole 73 at the first time and then enters the gas-liquid mixing chamber 4; meanwhile, when the air pump piston 72 moves downward, the position of the small hole 61 is avoided, and external air enters the inside of the upper end of the threaded portion 14 through the through hole 16 and is replenished into the container through the small hole 61.

When the pressing head 2 is released, the pressing head 2 rebounds and resets to the original state before pressing under the action of the resetting device of the spring 3, in the process, the pressing head 2 drives the gas control part 8 to move upwards, the annular sealing groove 84 also moves upwards to the upper part of the annular sealing strip 77 to avoid the annular sealing strip 77, and outside air can be supplemented to the gas pump chamber 6 through the through hole 16 and the air hole 73; at the same time, the air pump piston 72 seals the small hole 61.

Correspondingly, an inverted funnel ring 78 is arranged inside the upper end of the liquid pump piston 71, a valve core 9 is arranged in the pipe column 75, the upper end of the valve core 9 is fixedly connected with the pressing head 2, a circular truncated cone 91 is arranged at the lower end of the valve core 9, the circular truncated cone 91 can block or avoid the funnel ring 78, namely, the outer inclined surface of the circular truncated cone 91 can block the inner inclined surface of the funnel ring 78. When the pressing head 2 is pressed down, the valve core 9 moves downwards, the circular truncated cone 91 avoids the funnel ring 78 downwards, and liquid can enter the gas-liquid mixing cavity 4 in the pipe column 75 through the gap between the circular truncated cone 91 and the funnel ring 78; when the pressing head 2 is released, the pressing head 2 drives the valve core 9 to move upwards, the outer inclined surface of the circular truncated cone 91 can block the inner inclined surface of the funnel ring 78, and fluid in the gas-liquid mixing cavity 4 is prevented from flowing back to the liquid pump cavity 5.

Specifically, the inner wall of the upper end of the gas control member 8 is provided with an annular bone position 85, the upper end of the valve core 9 is clamped in a central hole of the bone position 85, the bone position 85 is provided with a plurality of bubble outlet holes which are communicated up and down, and the inner wall of the upper end of the gas control member 8 is provided with a plurality of guide ribs 86 at the lower side of the bone position 85, so that the valve core 9 is convenient to install. The foam passage 21 has the net post 10 installed therein.

Referring to fig. 1 again, a liquid pipe 53 is provided at the lower end of the liquid pump chamber 5, a valve hole 51 and a valve member 52 are provided in the liquid pipe 53, the valve member 52 is provided above the valve hole 51, and the valve member 52 can block or avoid the valve hole 51. The upper end of the liquid conduit 53 is connected to the liquid pump chamber 5, and the lower end is provided with a suction pipe 17. When the liquid pump piston 71 moves downwards, the valve member 52 blocks the valve hole 51 under the pressure of the fluid in the liquid pump chamber 5, and the fluid in the liquid pump chamber 5 can only flow upwards into the gas-liquid mixing chamber 4 inside the pipe column 75 through the liquid passage 74; when the liquid pump piston 71 moves upward, negative pressure is formed in the liquid pump chamber 5, the valve member 52 floats up under the action of the negative pressure to avoid opening the valve hole 51, and the fluid in the container is sucked into the liquid pump chamber 5 through the suction pipe 17.

When the air pump is used, when the pressing head 2 is pressed down, the air control part 8 moves downwards along with the pressing head, the annular sealing groove 84 is downwards clamped with the annular sealing strip 77, so that the air hole 73 cannot be communicated with the inside of the upper end of the threaded part 14, and a channel for air overflowed from the air pump chamber 6 to the outside is cut off; meanwhile, the valve core 9 is driven by the gas control component 8 to move downwards, the circular truncated cone 91 avoids the funnel ring 78, and the liquid channel 74 is communicated with the interior of the pipe column 75; the valve member 52 blocks the valve hole 51.

Then, the pressing head 2 moves downwards continuously, the column 75 is pushed downwards by the gas control member 8, the piston body 7 moves downwards, gas in the gas pump chamber 6 is extruded by the gas pump piston 72, enters between the annular table 83 and the gas pump piston 72 through the gas hole 73, and enters the inner lower end of the column 75 through the vent groove 76 on the outer wall of the column and the vent groove 76 on the inner wall of the column; meanwhile, the fluid in the liquid pump chamber 5 is squeezed by the liquid pump piston 71, and the fluid enters the inner lower end of the pipe column 75 through the gap between the circular truncated cone 91 and the funnel ring 78; the lower end of the interior of the pipe column 75 is the gas-liquid mixing chamber 4, and gas and fluid are primarily mixed at the lower end of the pipe column 75 to form bubbles; the bubbles pass through the gaps between the plurality of guide ribs 86 and then through the foam outlet holes in the bone 85 to form foam; then the foam is divided into dense foams through a net post 10; the foam flows out through the foam outlet 24.

Then, the pressing head 2 is released, the pressing head 2 rebounds and resets to the original state before pressing under the action of the resetting device of the spring 3, in the process, the gas control part 8 moves upwards, the annular sealing groove 84 avoids the open-loop sealing strip 77, and the external air is supplemented to the air pump chamber 6 through the through hole 16 and the air hole 73; meanwhile, the valve core 9 moves upwards, and the cone 91 blocks the funnel ring 78 to prevent foam from flowing back; then, the circular truncated cone 91 hooks the funnel ring 78 to move upwards, so that the piston body 7 is restored under the pulling force of the valve core 9; the valve member 52 floats up to open the valve hole 51, and the fluid in the container is sucked into the liquid pump chamber 5 through the suction pipe 17.

The liquid pump chamber 5 and the gas pump chamber 6 are integrally formed, and the liquid pump chamber 5 is provided at a lower end of the center of the gas pump chamber 6.

In addition, in the foam pump in the prior art, the elastic sheet is used as a switch valve for leading the gas in the container to the gas-liquid mixing cavity, the elastic sheet generally uses a soft rubber valve, the soft rubber valve is thin, the finished product is difficult to be injection molded, and the injection molded soft rubber valve has unstable quality and complex production process. Moreover, the soft rubber valve is thin, the soft rubber valve is easy to deform, and the sealing effect is poor; the soft rubber valve is thick, and the gas in the bottle can be lifted by a large pressure to extrude the soft rubber valve to the gas-liquid mixing cavity, so that the pressing head of the foam pump is difficult to press and even is immovable to press, and the use is seriously influenced. Moreover, with the structure, after the foam in the gas-liquid mixing chamber becomes fluid, the fluid is easy to flow back into the air pump chamber, the fluid flowing back into the air pump chamber is easy to deteriorate due to being in a sealed state, and the fluid can wash away lubricating oil between the air pump piston and the air pump chamber, so that the friction between the air pump piston and the air pump chamber is increased, the pressing spring pump needs larger strength, the hand feeling is poor, the air pump piston cannot return smoothly and return to the original position, the pressing stroke of the spring pump is shortened, the foam discharge amount is small, and the sealing effect is influenced. Finally, the use of the spring plate requires many parts to be matched with the spring plate, and the structure is complex.

And the utility model provides a piston body 7 and gas control 8 can direct injection moulding, and manufacturing process is simpler moreover, and the steady quality is convenient for produce. And the vent groove 76 on the piston body 7 is used as a channel for the gas in the container to go to the gas-liquid mixing cavity 4, so that the gas does not need to be pushed away, and the gas in the container can easily reach the gas-liquid mixing cavity 4 only by slightly pressing the pressing head 2, so that the labor is saved, and the use hand feeling is good. Moreover, the sealing of the gas passage is realized by sealing the annular sealing strip 77 by the annular sealing groove 84, and the sealing effect is good. Further, the column 75 is provided between the first seal pipe 81 and the second seal pipe 82, the column 75 is designed to have an appropriate height, and after the foam in the gas-liquid mixing chamber 4 becomes fluid, the fluid in the gas-liquid mixing chamber 4 has a height exceeding the height of the column 75 and cannot flow back into the gas pump chamber 6, so that there is no risk of backflow. Finally, compared with the existing technology using the soft rubber valve, a plurality of parts are reduced, the production and manufacturing cost is greatly reduced, the assembly difficulty is reduced, and the production efficiency and the product quality are improved.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. A spring foam pump characterized by: including shell (1) and movably locate press head (2) of shell upper end, be equipped with foam passageway (21) in the press head, foam passageway overcoat is equipped with spring (3), the one end butt press head of spring, other end butt shell, the inside gas-liquid mixing chamber (4) that is equipped with in upper end of shell, lower extreme are equipped with liquid pump room (5) and gas pump room (6), gas-liquid mixing chamber (4) and foam passageway (21) intercommunication, just gas-liquid mixing chamber (4) can communicate with liquid pump room (5) and gas pump room (6) respectively, be equipped with liquid pump piston (71) and gas pump piston (72) in liquid pump room and the gas pump room respectively, the integrative setting of gas pump piston is on the liquid pump piston, the lower extreme of press head can promote the upper end of liquid pump piston.

2. A spring foam pump according to claim 1, wherein: the novel multifunctional pen is characterized in that a vertical guide groove (11) is formed in the shell or the pressing head, a guide strip (22) is correspondingly arranged on the pressing head or the shell, an arc-shaped limiting groove (12) is formed in the side wall of the vertical guide groove along the circumferential direction, the vertical guide groove is communicated with the limiting groove, and the limiting groove is located at one end close to the guide strip.

3. A spring foam pump according to claim 2, wherein: and a limiting bulge (13) is arranged on the arc surface of the limiting groove.

4. A spring foam pump according to claim 1, wherein: still include piston body (7), piston body (7) include air pump piston (72) and locate air pump piston (72) central liquid pump piston (71), there is gas pocket (73) on the air pump piston, gas pocket and gas pump chamber (6) intercommunication, just the gas pocket can communicate with the gas-liquid mixing chamber, liquid pump piston (71) central authorities are equipped with liquid passage (74), liquid passage (74) and liquid pump chamber (5) intercommunication, just liquid passage (74) can communicate with the gas-liquid mixing chamber.

5. A spring foam pump according to claim 4, wherein: piston body (7) still including locating tubular column (75) of liquid pump piston (71) upper end, the inner wall and the outer wall of tubular column all are equipped with many air channel (76), gas in air pump room (6) can be in air vent (73), tubular column outer wall's air channel (76) and tubular column inner wall's air channel (76) entering tubular column (75), tubular column (75) and foam passageway (21) intercommunication.

6. A spring foam pump according to claim 5, wherein: be equipped with gas control spare (8) between press head (2) and piston body (7), the upper end and the press head (2) fixed connection of gas control spare, gas control spare (8) are including locating first sealed tube (81) of lower extreme and second sealed tube (82) of locating outside first sealed tube, the upper end sealing connection of first sealed tube (81) and second sealed tube (82), between first sealed tube (81) and second sealed tube (82) are located in tubular column (75), first sealed tube (81) and foam passageway (21) intercommunication.

7. A spring foam pump according to claim 6, wherein: the up end of air pump piston (72) is equipped with bellied annular sealing strip (77) along circumference, keeping away from air pump piston (72) center one side of gas pocket (73) is located in annular sealing strip (77), the outside of second sealed tube (82) is equipped with ring platform (83), the lower extreme of ring platform (83) is equipped with annular seal groove (84), annular seal groove (84) can joint or dodge annular sealing strip (77).

8. A spring foam pump according to claim 5, wherein: the liquid pump is characterized in that an inverted funnel ring (78) is arranged inside the upper end of the liquid pump piston (71), a valve core (9) is arranged in the pipe column (75), the upper end of the valve core (9) is fixedly connected with the pressing head (2), a round table (91) is arranged at the lower end of the valve core, and the round table (91) can block or avoid the funnel ring (78).

9. A spring foam pump according to claim 1, wherein: the lower extreme of liquid pump room (5) is equipped with leads to liquid pipe (53), it is equipped with valve opening (51) and valve member (52) in leading to liquid pipe (53), valve member (52) are located the top of valve opening (51), valve member (52) can block up or dodge valve opening (51).

10. A packaging container characterized by: comprising a container capable of containing a fluid and a spring foam pump according to any one of claims 1 to 9, wherein the housing (1) is mounted on the container, the liquid pump chamber (5) and the gas pump chamber (6) extend into the container, and the liquid pump chamber (5) is capable of communicating with the container.