Spring-free air bag type pump head

Abstract

The utility model discloses a spring-free air bag type pump head which comprises a bottle cap arranged on a bottle body, a resettable elastic air bag is arranged on the bottle cap, and an air supply structure is arranged on the elastic air bag. A liquid outlet pipe is arranged in the elastic air bag, a liquid inlet pipe is arranged at the lower end of the liquid outlet pipe, a liquid outlet nozzle is arranged at the upper end of the liquid outlet pipe, the product has two liquid outlet modes, one mode is that the elastic air bag is pressed, air is discharged from the liquid outlet nozzle, negative pressure is formed, and liquid in a bottle is pumped out, and the other mode is that the elastic air bag is pressed, air enters the bottle, and the liquid in the bottle is squeezed out. The compression and reset functions of the elastic air bag replace the reset function of a metal spring, the structure of the product is optimized, and the problems that the metal spring is soaked in emulsion for a long time and is prone to rusting, the emulsion is polluted, and the performance index of the product is reduced are effectively solved.

Description

Technical Field

[0001] This utility model relates to an emulsion pump, and more particularly to a springless airbag pump head. Background Technology

[0002] Lotion pumps are commonly used in daily cleaning and skincare products such as hand soap, shower gel, and facial cleanser to dispense lotion. They are widely used in daily life. Traditional lotion pumps use metal springs as the reset component of the pump head. When immersed in lotion for a long time, these springs are prone to rusting and contaminating the lotion. The complex and unreasonable structural design makes it difficult to guarantee product performance indicators, such as the spring rusting or failing to pump liquid due to insufficient elasticity. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a springless airbag pump head.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A springless airbag pump head includes a cap mounted on a bottle body, the cap having a resettable elastic airbag and an air-replenishing structure. A liquid outlet tube is located within the elastic airbag, with an inlet tube at the lower end and a nozzle at the upper end. When the elastic airbag is pressed, the air inside the bottle is compressed, and emulsion is discharged through the inlet tube, the outlet tube, and the nozzle. When the elastic airbag is released, external air is replenished into the bottle through the air-replenishing structure.

[0006] A one-way valve is installed at the lower end of the outlet pipe.

[0007] The bottom surface of the elastic airbag is abutted by a first connector, and the center of the first connector is provided with an "H"-shaped connecting part. The upper end of the "H"-shaped connecting part is connected to the lower end of the liquid outlet pipe, and the one-way valve is disposed inside the upper end of the "H"-shaped connecting part. The lower end of the "H"-shaped connecting part is connected to the liquid inlet pipe, and the "H"-shaped connecting part is provided with a first through hole for communicating the liquid outlet pipe with the liquid outlet pipe.

[0008] The lower end of the outlet pipe is provided with an upwardly protruding first cone, and the apex of the cone is provided with a normally closed second through hole. The first cone and the second through hole together form the one-way valve.

[0009] A thin film is pressed between the lower end of the outlet pipe and the upper end of the "H"-shaped connector. The lower end of the outlet pipe has several first liquid guiding notches along the circumferential direction. The upper end of the "H"-shaped connector, the thin film, and the first liquid guiding notches constitute the one-way valve. When discharging liquid, the thin film arches at the position of the first liquid guiding notch, so that the outlet pipe is connected to the inlet pipe.

[0010] The inner side of the liquid outlet tube is provided with an inner layer, the lower end of the inner layer abuts against the top surface of the film, and the inner layer is provided with a second liquid guiding notch corresponding to the first liquid guiding notch.

[0011] The inner layer has a central portion at its center, which abuts against the top surface of the film.

[0012] A springless airbag pump head includes a bottle cap for mounting on a bottle body, wherein the bottle cap is provided with a resettable elastic airbag and an air replenishment structure is provided on the elastic airbag; a liquid outlet is installed on the elastic airbag, and a liquid outlet tube is integrally formed on the liquid outlet tube; a sliding sleeve is provided at the bottom of the bottle cap, and the liquid outlet tube is slidably inserted into the sliding sleeve; and a liquid inlet tube is provided at the lower end of the liquid outlet tube.

[0013] The elastic airbag has an elastic reinforcement section at its center, and the liquid outlet tube passes through the elastic reinforcement section.

[0014] A springless airbag pump head includes a bottle cap for mounting on a bottle, a pump chamber on the bottle cap, a resettable elastic airbag inside the pump chamber, an air supply structure on the elastic airbag, a sealing ring on the elastic airbag that abuts against the inner side of the pump chamber, a liquid outlet pipe at the bottom of the elastic airbag, and a liquid inlet pipe communicating with the liquid outlet pipe installed at the bottom of the pump chamber.

[0015] The elastic airbag is provided with several tension strips that connect the top of the elastic airbag to the sealing ring. When the liquid outlet is pressed, the tension strips are stretched, and when the liquid outlet is released, the tension strips retract and return to normal from the stretched state.

[0016] A springless airbag pump head includes a cap for mounting on a bottle body, a pump chamber installed on the inner bottom side of the cap, an elastic airbag installed on the outer top side of the cap, the upper end of the pump chamber communicating with the lower end of the elastic airbag, an inlet pipe installed at the lower end of the pump chamber, an air replenishment structure provided on the elastic airbag, an outlet nozzle installed on the elastic airbag, an upper one-way valve provided inside the outlet nozzle, and a lower one-way valve at the bottom of the pump chamber.

[0017] A springless airbag pump head includes a cap for mounting on a bottle body, an elastic airbag mounted on the top outer side of the cap, an air replenishment structure on the elastic airbag, a liquid inlet pipe mounted on the bottom of the elastic airbag, and a liquid outlet pipe mounted on the top of the elastic airbag. The liquid inlet pipe and the liquid outlet pipe are connected through the liquid outlet pipe.

[0018] The liquid outlet tube is the elastic airbag itself, the elastic airbag and the liquid inlet tube are integrally formed, an upper one-way valve is installed at the connection between the elastic airbag and the liquid outlet, and a lower one-way valve is provided at the connection between the elastic airbag and the liquid inlet tube.

[0019] The liquid outlet tube and the liquid outlet nozzle are integrally formed, the elastic airbag and the liquid inlet tube are integrally formed, and the lower end of the elastic airbag is provided with an air inlet hole, so that the interior of the elastic airbag and the internal space of the bottle are connected through the air inlet hole.

[0020] The liquid outlet pipe and the liquid outlet nozzle are integrally formed, the elastic airbag and the liquid inlet pipe are integrally formed, and the air replenishment structure includes an upper air replenishment structure located at the top of the elastic airbag and a lower air replenishment structure located at the lower end of the elastic airbag.

[0021] A springless airbag pump head includes a bottle cap for mounting on a bottle body, a pump chamber on the bottle cap, a resettable elastic airbag inside the pump chamber, a liquid outlet on the top of the elastic airbag, an inlet pipe on the lower end of the pump chamber, the liquid outlet and the inlet pipe being connected through the liquid outlet pipe, and an air replenishment structure on the elastic airbag.

[0022] The liquid outlet tube and the liquid outlet nozzle are integrally formed and pass through the elastic air bladder. The liquid outlet tube is inserted into the upper end of the liquid inlet tube, and the one-way valve is provided at the lower end of the liquid inlet tube.

[0023] The liquid outlet pipe is integrally formed with the liquid outlet nozzle. The liquid outlet pipe passes through the elastic air bladder. The liquid inlet pipe is integrally formed at the lower end of the elastic air bladder. An upper one-way valve is provided at the lower end of the liquid outlet pipe. A lower one-way valve is provided at the connection between the lower end of the elastic air bladder and the liquid inlet pipe.

[0024] The liquid outlet pipe is integrally formed with the liquid outlet nozzle, the liquid inlet pipe is installed at the lower end of the pump chamber, an upper one-way valve is provided at the connection between the top of the elastic airbag and the liquid outlet pipe, and a lower one-way valve is provided at the connection between the bottom of the elastic airbag and the liquid inlet pipe. The upper one-way valve and the lower one-way valve are integrally formed with the elastic airbag.

[0025] The liquid outlet tube is the communication space between the elastic airbag and the liquid outlet nozzle. The liquid inlet tube is integrally formed at the bottom of the elastic airbag. An upper one-way valve is provided on the liquid outlet nozzle. A lower one-way valve is provided at the connection between the bottom of the elastic airbag and the liquid inlet tube. The lower one-way valve is integrally formed with the elastic airbag.

[0026] The liquid outlet pipe and the liquid outlet nozzle are integrally formed. The liquid inlet pipe is installed at the lower end of the pump chamber. An upper one-way valve is provided on the top of the elastic airbag and a lower one-way valve is provided at the connection between the bottom of the elastic airbag and the liquid inlet pipe. The upper one-way valve is integrally formed with the elastic airbag. A metering ring that can be adjusted up and down is threaded on the outside of the liquid outlet nozzle.

[0027] The beneficial effects of this utility model are as follows: This utility model has a resettable elastic airbag on the bottle cap, and an air replenishment structure on the elastic airbag; a liquid outlet tube is set inside the elastic airbag, with a liquid inlet tube at the lower end of the liquid outlet tube and a liquid outlet nozzle at the upper end of the liquid outlet tube. This product has two liquid dispensing methods: one is to press the elastic airbag, and air is discharged from the liquid outlet nozzle to form a negative pressure and draw out the liquid in the bottle; the other is to press the elastic airbag, and air enters the bottle and squeezes out the liquid in the bottle. By using the compression and reset function of the elastic airbag, the reset function of the metal spring is replaced, which optimizes the structure of the product and effectively solves the problem that the metal spring is prone to rusting and contaminating the emulsion due to prolonged immersion in the emulsion, resulting in a decline in product performance indicators. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a structural diagram of the present invention;

[0030] Figure 2 This is a cross-sectional schematic diagram of the first embodiment;

[0031] Figure 3 This is a cross-sectional schematic diagram of the second embodiment;

[0032] Figure 4 This is a cross-sectional schematic diagram of the third embodiment;

[0033] Figure 5 This is a cross-sectional schematic diagram of the fourth embodiment;

[0034] Figure 6 This is a cross-sectional schematic diagram of the fifth embodiment;

[0035] Figure 7 This is a cross-sectional schematic diagram of the sixth embodiment;

[0036] Figure 8 This is a cross-sectional schematic diagram of the seventh embodiment;

[0037] Figure 9 This is a cross-sectional schematic diagram of the eighth embodiment;

[0038] Figure 10 This is a cross-sectional schematic diagram of the ninth embodiment;

[0039] Figure 11This is a cross-sectional schematic diagram of the tenth embodiment;

[0040] Figure 12 This is a cross-sectional schematic diagram of the eleventh embodiment;

[0041] Figure 13 This is a cross-sectional schematic diagram of the twelfth embodiment;

[0042] Figure 14 This is a cross-sectional schematic diagram of the thirteenth embodiment;

[0043] Figure 15 This is a cross-sectional schematic diagram of the fourteenth embodiment;

[0044] Figure 16 This is a cross-sectional schematic diagram of the fifteenth embodiment;

[0045] Figure 17 This is a cross-sectional schematic diagram of the sixteenth embodiment;

[0046] Figure 18 This is a cross-sectional schematic diagram of the seventeenth embodiment;

[0047] Figure 19 This is a cross-sectional schematic diagram of the eighteenth embodiment;

[0048] Figure 20 This is a cross-sectional schematic diagram of the nineteenth embodiment;

[0049] Figure 21 This is a cross-sectional schematic diagram of the twentieth embodiment;

[0050] Figure 22 This is a cross-sectional schematic diagram of the twenty-first embodiment;

[0051] Figure 23 This is a cross-sectional schematic diagram of the twenty-second embodiment;

[0052] Figure 24 This is a cross-sectional schematic diagram of the twenty-third embodiment;

[0053] Figure 25 This is a cross-sectional schematic diagram of the twenty-fourth embodiment;

[0054] Figure 26 This is a cross-sectional schematic diagram of the twenty-fifth embodiment;

[0055] Figure 27 This is a cross-sectional schematic diagram of the twenty-sixth embodiment;

[0056] Figure 28 This is a structural diagram of the first elastic airbag;

[0057] Figure 29 This is a three-dimensional sectional view of the first connector. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0059] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0060] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0061] Reference Figures 1 to 29 A springless airbag pump head includes a bottle cap 1 mounted on a bottle body, a resettable elastic airbag 2 on the bottle cap 1, and an air replenishment structure 6 on the elastic airbag 2. A liquid outlet tube 3 is disposed inside the elastic airbag 2, with a liquid inlet tube 4 at the lower end of the liquid outlet tube 3 and a liquid outlet nozzle 5 at the upper end of the liquid outlet tube 3. This product has two liquid dispensing methods: one is pressing the elastic airbag, which discharges air from the liquid outlet nozzle, creating negative pressure to draw out the liquid from the bottle; the other is pressing the elastic airbag, which allows air to enter the bottle and squeeze out the liquid. The compression and reset function of the elastic airbag replaces the function of the pump chamber and the reset function of the metal spring, optimizing the product structure and effectively solving the problem that metal springs are prone to rusting and contaminating the emulsion due to prolonged immersion in emulsion, leading to a decline in product performance.

[0062] The gas-replenishing structure 6 can be set on the elastic airbag 2 or on the bottle cap 1, and the gap between the elastic airbag 2 and the bottle cap 1 can also be used as the gas-replenishing structure.

[0063] First embodiment: This embodiment does not have a one-way valve structure; the liquid outlet pipe 3 is integrally formed with the elastic airbag 2, as shown in the reference. Figure 2 .

[0064] A one-way valve 9 is provided at the lower end of the liquid outlet pipe 3.

[0065] In the second embodiment: the liquid outlet pipe 3, the one-way valve 9, and the elastic airbag 2 are integrally formed; the liquid outlet pipe 3 is a corrugated structure pipe, as shown in the reference. Figure 3 .

[0066] The third embodiment: the liquid outlet pipe 3, the one-way valve 9, and the elastic airbag 2 are integrally formed; the liquid outlet pipe 3 is a straight pipe, as shown in the reference. Figure 4 .

[0067] In addition, the outlet pipe 3 can also be a threaded pipe or other structures.

[0068] The bottom surface of the elastic airbag 2 is abutted by a first connector 7, and the center of the first connector 7 is provided with an "H"-shaped connecting part 8. The upper end of the "H"-shaped connecting part 8 is connected to the lower end of the liquid outlet pipe 3, and the one-way valve 9 is disposed in the upper end of the "H"-shaped connecting part 8. The lower end of the "H"-shaped connecting part 8 is connected to the liquid inlet pipe 4, and the "H"-shaped connecting part 8 is provided with a first through hole 15 for communicating the liquid outlet pipe 3 with the liquid outlet pipe 4.

[0069] The lower end of the liquid outlet pipe 3 is provided with an upwardly protruding first cone, and the apex of the cone is provided with a normally closed second through hole. The first cone and the second through hole together form the one-way valve 9.

[0070] A thin film 10 is pressed between the lower end of the outlet pipe 3 and the upper end of the "H"-shaped connecting part 8. The lower end of the outlet pipe 3 has a plurality of first liquid guiding notches 11 along the circumferential direction. The upper end of the "H"-shaped connecting part 8, the thin film 10 and the first liquid guiding notches 11 form the one-way valve 9. When discharging liquid, the thin film 10 arches at the position of the first liquid guiding notch 11, so that the outlet pipe 3 is connected to the inlet pipe 4.

[0071] Fourth embodiment: The liquid outlet tube 3 is integrally formed with the elastic airbag 2. The liquid outlet tube 3 is a corrugated tube, and the elastic airbag 2 has a rhomboid shape. (Refer to...) Figure 5 .

[0072] Fifth embodiment: The liquid outlet tube 3 is integrally formed with the elastic airbag 2. The liquid outlet tube 3 is a corrugated tube, and the elastic airbag 2 has a spherical shape. (Refer to...) Figure 6 .

[0073] Sixth embodiment: The liquid outlet tube 3 is integrally formed with the elastic airbag 2. The liquid outlet tube 3 is a corrugated tube, and the elastic airbag 2 has a corrugated shape. (Refer to...) Figure 7 .

[0074] Furthermore, the elastic airbag 2 can also have a spiral or other similar shape.

[0075] An inner layer 12 is provided on the inner side of the liquid outlet pipe 3. The lower end of the inner layer 12 abuts against the top surface of the film 10. A second liquid guiding notch 13 is provided on the inner layer 12 corresponding to the first liquid guiding notch 11.

[0076] The inner layer 12 has a central portion 14 at its center, and the central portion 14 abuts against the top surface of the film 10.

[0077] The three structures of the liquid outlet tube 3, inner layer 12, and center part 14 can coexist, and their lower ends can all abut against the film 10. Alternatively, only the center part 14 can abut against the film 10. The lower ends of the liquid outlet tube 3 and inner layer 12 are set at a certain distance from the bottom of the upper end of the "H"-shaped connecting part 8 to provide space for the film 10 to be raised.

[0078] In addition, manufacturers can choose to install one or three of the liquid outlet pipe 3, inner layer 12, and center part 14 in the liquid outlet pipe 3 according to different needs (this can be achieved by modifying the mold, etc.). The requirement is to ensure that the film 10 can arch upwards or in the same way when dispensing liquid, so that the liquid outlet pipe 3 can be connected to the liquid inlet pipe 4. When dispensing liquid, the film 10 is pressed down again and fits against the upper bottom of the "H"-shaped connecting part 8, thus blocking the first through hole and preventing liquid backflow.

[0079] The gas replenishment structure 6 has a second cone-shaped body on one side of the gas outlet end. The apex of the second cone-shaped body has a normally closed third through hole. When gas is replenished, the air expands the third through hole to form a passage. The side wall of the second cone-shaped body is squeezed outward by the air. When the pressure inside the bottle and the external pressure are balanced, that is, when no air passes through, the side wall of the second cone-shaped body returns to the center and closes the third through hole again.

[0080] The first connector 7 has a fourth through hole corresponding to the second cone, through which the second cone passes.

[0081] Seventh embodiment: The liquid outlet tube 3 and the liquid outlet nozzle 5 are integrally formed. A sliding sleeve is provided at the bottom of the bottle cap 1. The liquid outlet tube 3 is slidably inserted into the sliding sleeve. The liquid outlet tube 3 passes through the elastic air bladder 2. The elastic air bladder 2 is provided with a one-way valve for replenishing air corresponding to the replenishing air structure 6. Alternatively, the one-way valve for replenishing air may not be provided. (See reference...) Figure 8 .

[0082] Eighth embodiment: The liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed. An elastic reinforcing part is provided at the center of the elastic airbag 2. The liquid outlet pipe 3 passes through the elastic reinforcing part. The elastic airbag 2 is provided with a one-way valve for replenishing air corresponding to the replenishing air structure 6. Alternatively, the one-way valve for replenishing air may not be provided. (See reference...) Figure 9 .

[0083] Ninth embodiment: A pump chamber 16 is provided on the bottle cap 1. The elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is located at the bottom of the elastic airbag 2 and is integrally formed with the elastic airbag 2. The one-way valve 9 is located at the upper end of the liquid outlet pipe 3. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The air replenishment structure 6 is located at the bottom of the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is stretched. The sealing ring and the bottom of the elastic airbag 2 push the air in the pump chamber 16 into the bottle, thereby achieving the effect of liquid dispensing. (Reference) Figure 10 .

[0084] Tenth embodiment: A pump chamber 16 is provided on the bottle cap 1. The elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is disposed in the pump chamber 16 and is integrally formed with the pump chamber 16. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The one-way valve 9 is disposed at the upper end of the liquid inlet pipe 4. The air replenishment structure 6 is disposed at the bottom of the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is stretched. The sealing ring and the bottom of the elastic airbag 2 push the air in the pump chamber 16 into the bottle, thereby achieving the effect of liquid dispensing. (Reference) Figure 11 .

[0085] Eleventh embodiment: A pump chamber 16 is provided on the bottle cap 1. The elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is disposed in the pump chamber 16 and is integrally formed with the pump chamber 16. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The one-way valve 9 is disposed at the upper end of the liquid inlet pipe 4. The air replenishment structure 6 is disposed at the top of the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is stretched. The sealing ring and the bottom of the elastic airbag 2 push the air in the pump chamber 16 into the bottle, thereby achieving the effect of liquid dispensing. (Reference) Figure 12 .

[0086] Twelfth embodiment: A pump chamber 16 is provided on the bottle cap 1. The elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is located at the bottom of the elastic airbag 2 and is integrally formed with the elastic airbag 2. The liquid outlet pipe 3 is a straight pipe. A one-way valve 9 is located at the upper end of the liquid outlet pipe 3. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The air replenishment structure 6 is located at the top of the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is stretched. The sealing ring and the bottom of the elastic airbag 2 push the air in the pump chamber 16 into the bottle, thereby achieving the effect of liquid dispensing. (Reference) Figure 13 .

[0087] The thirteenth embodiment differs from the twelfth embodiment in that the outlet pipe 3 has a corrugated pipe structure, as referred to Figure 14 .

[0088] Fourteenth embodiment: A pump chamber 16 is provided on the bottle cap 1. The elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is located at the bottom of the elastic airbag 2 and is integrally formed with the elastic airbag 2. The one-way valve 9 is located at the upper end of the liquid outlet pipe 3. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The air replenishment structure 6 is located at the top of the elastic airbag 2. A closed cavity is provided inside the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is stretched. The sealing ring and the bottom of the elastic airbag 2 push the air in the pump chamber 16 into the bottle, thereby achieving the effect of liquid dispensing. During the downward stretching process, the volume inside the airbag increases and the air pressure decreases. After releasing, the rebound force will be greater. (Reference) Figure 15 .

[0089] The fifteenth embodiment: A pump chamber 16 is provided on the bottle cap 1, and the elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the lower end of the elastic airbag 2, and the sealing ring abuts against the inner side of the pump chamber 16. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16, and the air replenishment structure 6 is provided at the top of the elastic airbag 2. The liquid outlet pipe 3 is the pump chamber 16 itself. In this embodiment, the one-way valve 9 includes a lower one-way valve 91 located at the lower end of the liquid inlet pipe 4 and an upper one-way valve 92 located at the lower end of the elastic airbag 2. The lower one-way valve 91 is integrally formed with the liquid inlet pipe 4. The air bladder 2 is integrally formed with the upper one-way valve 92. When the dispensing nozzle 5 is pressed, the elastic air bladder 2 is stretched, and the air inside the pump chamber 16 is discharged from the dispensing nozzle 5 through the upper one-way valve 92. When the dispensing nozzle 5 is released, the elastic air bladder 2 contracts and returns to its original position, creating a negative pressure inside the pump chamber 16. The liquid in the bottle enters the pump chamber 16 through the lower one-way valve 91 and the inlet pipe 4. At the same time, external air is replenished into the bottle through the air replenishment structure 6. At this time, the pump chamber 16 is filled with liquid. Pressing the dispensing nozzle 5 again will dispense the liquid. Figure 16 .

[0090] The sixteenth embodiment differs from the fifteenth embodiment in that the lower one-way valve 91 and the inlet pipe 4 are two different parts, installed by insertion. (See reference...) Figure 17 .

[0091] Seventeenth embodiment: The elastic airbag 2 is installed on the top outer side of the bottle cap 1, and a pump chamber 16 is installed on the bottom inner side of the bottle cap 1. The upper end of the pump chamber 16 is connected to the lower end of the elastic airbag 2. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16, and the liquid outlet pipe 3 is the pump chamber 16 itself. The air replenishment structure 6 is disposed on the elastic airbag 2, and the liquid outlet 5 is installed on the elastic airbag 2. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 located inside the liquid outlet 5 and a one-way valve 92 located at the bottom of the pump chamber 16. Pressing the lower one-way valve 91 and the dispensing nozzle 5 compresses the elastic air bladder 2, causing air in the pump chamber 16 to be discharged through the upper one-way valve 92 and the dispensing nozzle 5. Releasing the dispensing nozzle 5 restores the elastic air bladder 2, creating a negative pressure between the elastic air bladder 2 and the internal space of the pump chamber 16. Liquid from the bottle enters the pump chamber 16 through the inlet pipe 4 and the lower one-way valve 91. Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this point, the pump chamber 16 contains liquid. Pressing the dispensing nozzle 5 again dispenses the liquid. (Reference) Figure 18 .

[0092] Eighteenth Embodiment: The liquid outlet pipe 3 is the elastic airbag 2 itself. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 at the connection between the top of the elastic airbag 2 and the liquid outlet 5, and a lower one-way valve 91 located at the lower end of the elastic airbag 2. The lower end of the elastic airbag 2 is integrally formed with the liquid inlet pipe 4. The lower one-way valve 91 is located at the connection between the elastic airbag 2 and the liquid inlet pipe 4. The air replenishment structure 6 is located at the bottom of the elastic airbag 2. When the liquid outlet 5 is pressed, the elastic airbag 2 is compressed, and the air inside the elastic airbag 2 is discharged from the liquid outlet 5 through the upper one-way valve 92. When the elastic airbag 2 is released, it recovers, creating a negative pressure inside. The liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this time, the elastic airbag 2 stores liquid. Pressing the liquid outlet 5 again will dispense the liquid. (Reference) Figure 19 .

[0093] Nineteenth embodiment: The liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, and the elastic airbag 2 and the liquid inlet pipe 4 are integrally formed. An air inlet 17 is provided at the lower end of the elastic airbag 2, allowing the interior of the elastic airbag 2 to communicate with the interior space of the bottle through the air inlet 17. Pressing the liquid outlet nozzle 5 compresses the elastic airbag 2, increasing the air pressure inside the bottle and squeezing the liquid inside the bottle towards the liquid inlet pipe 4. The liquid is discharged sequentially through the liquid inlet pipe 4, the liquid outlet pipe 3, and the liquid outlet nozzle 5. Releasing the elastic airbag 2 restores its shape, creating a negative pressure inside the elastic airbag 2. External air is replenished into the bottle through the air replenishment structure 6, and the replenished air is then replenished into the airbag through the air inlet 17. (Reference) Figure 20 .

[0094] Twentieth embodiment: The liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, and the elastic airbag 2 and the liquid inlet pipe 4 are integrally formed. In this embodiment, the air replenishment structure 6 includes an upper air replenishment structure 61 located at the top of the elastic airbag 2 and a lower air replenishment structure 62 located at the lower end of the elastic airbag 2. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is compressed, and the air in the elastic airbag 2 enters the bottle through the lower air replenishment structure 62. The air pressure inside the bottle increases, squeezing the liquid inside the bottle towards the liquid inlet pipe 4, and discharging it sequentially through the liquid inlet pipe 4, the liquid outlet pipe 3, and the liquid outlet nozzle 5. When the elastic airbag 2 is released, the elastic airbag 2 recovers, and a negative pressure is formed inside the elastic airbag 2. External air is replenished into the elastic airbag 2 through the upper air replenishment structure 61, and then replenished into the bottle through the lower air replenishment structure 62. (See reference) Figure 21 .

[0095] Twenty-first embodiment: A pump chamber 16 is provided on the bottle cap 1, and the elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided at the upper end of the elastic airbag 2. The liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed and pass through the elastic airbag 2. The liquid outlet pipe 3 is inserted into the upper end of the liquid inlet pipe 4. The one-way valve 9 is provided at the lower end of the liquid inlet pipe 4. When the liquid outlet nozzle 5 is pressed, the liquid outlet pipe 3 slides in the liquid inlet pipe 4, and air from the elastic airbag 2 enters the bottle, squeezing the liquid towards the liquid inlet pipe 4. The liquid is discharged sequentially through the one-way valve 9, the liquid inlet pipe 4, the liquid outlet pipe 3, and the liquid outlet nozzle 5. (Reference) Figure 22 .

[0096] Twenty-second embodiment: A pump chamber 16 is provided on the bottle cap 1, and the elastic airbag 2 is installed in the pump chamber 16. Sealing rings are provided at both the upper and lower ends of the elastic airbag 2. The liquid outlet pipe 3 is integrally formed with the liquid outlet nozzle 5 and passes through the elastic airbag 2. The liquid inlet pipe 4 is integrally formed at the lower end of the elastic airbag 2. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 located at the lower end of the liquid outlet pipe 3 and a lower one-way valve 91 located at the connection between the lower end of the elastic airbag 2 and the liquid inlet pipe 4. Pressing the dispensing nozzle 5 compresses the elastic airbag 2, allowing air inside to escape through the upper one-way valve 92 and the dispensing pipe 3, exiting through the dispensing nozzle 5. Releasing the elastic airbag 2 restores its original shape, creating a negative pressure within it. Liquid from the bottle enters the elastic airbag 2 through the inlet pipe 4 and the lower one-way valve 91. Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this point, the elastic airbag 2 contains liquid. Pressing the dispensing nozzle 5 again dispenses the liquid. (Reference) Figure 23 .

[0097] The twenty-third embodiment differs from the twenty-second embodiment in that the upper and lower ends of the elastic airbag 2 are not equipped with sealing rings, resulting in smoother pressing. (See reference...) Figure 24 .

[0098] Twenty-fourth embodiment: A pump chamber 16 is provided on the bottle cap 1, the elastic airbag 2 is installed in the pump chamber 16, a sealing ring is provided at the upper end of the elastic airbag 2, the liquid outlet pipe 3 is integrally formed with the liquid outlet nozzle 5, and the liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 located at the connection between the top of the elastic airbag 2 and the liquid outlet pipe 3, and a lower one-way valve 91 located at the connection between the bottom of the elastic airbag 2 and the liquid inlet pipe 4. The upper one-way valve 92 and the lower one-way valve 91 are connected to the liquid outlet nozzle 5. The elastic airbag 2 is integrally molded. Pressing the dispensing nozzle 5 compresses the elastic airbag 2, and the air inside the elastic airbag 2 is discharged from the dispensing nozzle 5 through the upper one-way valve 92 and the dispensing pipe 3. Releasing the elastic airbag 2 causes it to return to its original shape, creating a negative pressure inside. The liquid in the bottle enters the elastic airbag 2 through the inlet pipe 4 and the lower one-way valve 91. Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this point, the elastic airbag 2 contains liquid. Pressing the dispensing nozzle 5 again will dispense the liquid. (Reference) Figure 25 .

[0099] Twenty-fifth embodiment: A pump chamber 16 is provided on the bottle cap 1, and the elastic airbag 2 is installed in the pump chamber 16. A sealing ring is provided on the upper part of the elastic airbag 2. The liquid outlet pipe 3 is the communication space between the elastic airbag 2 and the liquid outlet 5. The liquid inlet pipe 4 is integrally formed at the bottom of the elastic airbag 2. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 located on the liquid outlet 5 and a lower one-way valve 91 located at the bottom of the elastic airbag 2 where it connects to the liquid inlet pipe 4. The lower one-way valve 91 is integrally formed with the elastic airbag 2. Pressing the liquid outlet... When the elastic air bladder 2 is compressed, air in the space connecting the elastic air bladder 2 and the outlet bladder 5 is discharged from the outlet bladder 5 through the upper one-way valve 92. Releasing the elastic air bladder 2 creates a negative pressure in the space connecting the elastic air bladder 2 and the outlet bladder 5. Liquid in the bottle enters the elastic air bladder 2 through the inlet pipe 4 and the lower one-way valve 91 (due to gravity, it settles in the lower elastic air bladder). Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this point, the elastic air bladder 2 contains liquid. Pressing the outlet bladder 5 again will dispense the liquid. (Reference) Figure 26 .

[0100] Twenty-sixth embodiment: A pump chamber 16 is provided on the bottle cap 1, the elastic airbag 2 is installed in the pump chamber 16, a sealing ring is provided on the upper part of the elastic airbag 2, the liquid outlet pipe 3 is integrally formed with the liquid outlet nozzle 5, and the liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. In this embodiment, the one-way valve 9 includes an upper one-way valve 92 located at the top of the elastic airbag 2 and a lower one-way valve 91 installed at the bottom of the elastic airbag 2 where it connects with the liquid inlet pipe 4. The upper one-way valve 92 is integrally formed with the elastic airbag 2, and a metering ring 18 that can be adjusted up and down is threaded on the outer side of the liquid outlet nozzle 5 (the metering ring 18 can be used...). In all embodiments, by adjusting the position of the metering ring 18, the pressing stroke of the dispensing nozzle 5 is controlled, thereby achieving the effect of metered dispensing. Pressing the dispensing nozzle 5 compresses the elastic airbag 2, and the air inside the elastic airbag 2 is discharged from the dispensing nozzle 5 through the upper one-way valve 92 and the dispensing pipe 3. Releasing the elastic airbag 2 restores the negative pressure, and the liquid in the bottle enters the elastic airbag 2 through the inlet pipe 4 and the lower one-way valve 91. Simultaneously, external air is replenished into the bottle through the air replenishment structure 6. At this time, the elastic airbag 2 stores liquid, and pressing the dispensing nozzle 5 again dispenses the liquid. (See reference...) Figure 27 .

[0101] In the ninth to sixteenth embodiments, the elastic airbag 2 is provided with a plurality of tension strips that connect the top of the elastic airbag 2 and the sealing ring. When the liquid outlet 5 is pressed, the tension strips are stretched, and when the liquid outlet 5 is released, the tension strips retract and return to the normal state from the stretched state. In the other embodiments, the elastic airbag 2 is compressed during operation and returns to the normal state from the compressed state during recovery.

[0102] In this product, the liquid inside the bottle is discharged sequentially through the inlet pipe 4, the outlet pipe 3, and the outlet nozzle 5. The outlet pipe 3 can be either the inlet pipe 4 or the outlet nozzle 5. That is, the outlet pipe 3 can be integrally formed with the outlet nozzle 5, integrally formed with the elastic airbag 2, the elastic airbag 2 itself, or the pump chamber 16 itself, etc.

[0103] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The bottle cap (1) is provided with a resettable elastic air bag (2), the elastic air bag (2) is provided with a gas supplement structure (6); the elastic air bag (2) is provided with a liquid outlet pipe (3), the lower end of the liquid outlet pipe (3) is provided with a liquid inlet pipe (4), the upper end of the liquid outlet pipe (3) is provided with a liquid outlet nozzle (5), when the elastic air bag (2) is pressed, the air in the bottle is compressed, the emulsion is discharged through the liquid inlet pipe (4), the liquid outlet pipe (3) and the liquid outlet nozzle (5), when the elastic air bag (2) is released, the external air is supplemented into the bottle through the gas supplement structure (6).

2. The bladder pump head of claim 1, wherein The lower end of the liquid outlet pipe (3) is provided with a one-way valve (9).

3. The bladder pump head of claim 2, wherein The bottom surface of the elastic air bag (2) is provided with a first connecting piece (7), the center of the first connecting piece (7) is provided with an "H" type connecting part (8), the upper end of the "H" type connecting part (8) is connected with the lower end of the liquid outlet pipe (3), and the one-way valve (9) is arranged in the upper end of the "H" type connecting part (8); the lower end of the "H" type connecting part (8) is connected with the liquid inlet pipe (4), and the "H" type connecting part (8) is provided with a first through hole (15) for communicating the liquid outlet pipe (3) with the liquid outlet pipe (3).

4. A gas-bag pump head according to claim 2 or 3, characterised in that The lower end of the liquid outlet pipe (3) is provided with a first conical body protruding upward, the vertex of the conical body is provided with a normally closed second through hole, and the first conical body and the second through hole form the one-way valve (9).

5. The bladder pump head of claim 3, wherein The lower end of the liquid outlet pipe (3) is provided with a first conical body protruding upward, the vertex of the conical body is provided with a normally closed second through hole, and the first conical body and the second through hole form the one-way valve (9).

6. The bladder pump head of claim 5, wherein The lower end of the liquid outlet pipe (3) is connected with the upper end of the "H" type connecting part (8), and the lower end of the liquid outlet pipe (3) is locally provided with a plurality of first liquid guide notches (11) in the circumferential direction, the upper end of the "H" type connecting part (8), the film (10) and the first liquid guide notches (11) constitute the one-way valve (9), and when the liquid is discharged, the film (10) is arched at the position of the first liquid guide notches (11), so that the liquid outlet pipe (3) is communicated with the liquid inlet pipe (4).

7. The bladder pump head of claim 6, wherein The inner side of the liquid outlet pipe (3) is provided with an inner layer part (12), the lower end of the inner layer part (12) is abutted with the top surface of the film (10), and the inner layer part (12) is provided with a second liquid guide notch (13) corresponding to the first liquid guide notch (11).

8. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The center of the inner layer part (12) is provided with a center part (14), and the center part (14) is abutted with the top surface of the film (10).

9. The bladder pump head of claim 8, wherein The bottle cap (1) is provided with a resettable elastic air bag (2), the elastic air bag (2) is provided with a gas supplement structure (6); the elastic air bag (2) is provided with a liquid outlet nozzle (5), the liquid outlet nozzle (5) is integrally formed with a liquid outlet pipe (3), the bottom of the bottle cap (1) is provided with a sliding sleeve, the liquid outlet pipe (3) is slidingly inserted into the sliding sleeve, and the lower end of the liquid outlet pipe (3) is provided with a liquid inlet pipe (4). The center of the elastic air bag (2) is provided with a spring reinforcing part, and the liquid outlet pipe (3) penetrates through the spring reinforcing part.

10. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The bottle cap (1) is provided with a pump chamber (16), the pump chamber (16) is provided with a resettable elastic air bag (2), the elastic air bag (2) is provided with a gas supplement structure (6), the elastic air bag (2) is provided with a sealing ring, the sealing ring is combined with the inner side of the pump chamber (16), the bottom of the elastic air bag (2) is provided with a liquid outlet pipe (3), and the bottom of the pump chamber (16) is provided with a liquid inlet pipe (4) communicated with the liquid outlet pipe (3).

11. The bladder pump head of claim 10, wherein The elastic air bag (2) is provided with a plurality of stretch strips, the top of the elastic air bag (2) and the sealing ring are connected, when the liquid outlet nozzle (5) is pressed, the stretch strips are stretched, when the liquid outlet nozzle (5) is released, the stretch strips are retracted, and the stretch strips recover from the stretched state to the normal state.

12. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The bottom of the bottle cap (1) is provided with a pump chamber (16), the top of the bottle cap (1) is provided with an elastic air bag (2), the upper end of the pump chamber (16) is communicated with the lower end of the elastic air bag (2), the lower end of the pump chamber (16) is provided with a liquid inlet pipe (4), the elastic air bag (2) is provided with a gas supplement structure (6), the elastic air bag (2) is provided with a liquid outlet nozzle (5), the liquid outlet nozzle (5) is provided with an upper one-way valve (92), and the bottom of the pump chamber (16) is provided with a lower one-way valve (91).

13. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The top of the bottle cap (1) is provided with an elastic air bag (2), the elastic air bag (2) is provided with a gas supplement structure (6), the bottom of the elastic air bag (2) is provided with a liquid inlet pipe (4), the top of the elastic air bag (2) is provided with a liquid outlet nozzle (5), and the liquid inlet pipe (4) and the liquid outlet nozzle (5) are communicated through a liquid outlet pipe (3).

14. The bladder pump head of claim 13, wherein The liquid outlet pipe (3) is the elastic air bag (2) itself, the elastic air bag (2) and the liquid inlet pipe (4) are integrally formed, the connection part of the elastic air bag (2) and the liquid outlet nozzle (5) is provided with an upper one-way valve (92), and the connection part of the elastic air bag (2) and the liquid inlet pipe (4) is provided with a lower one-way valve (91).

15. The bladder pump head of claim 13, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed, the elastic air bag (2) and the liquid inlet pipe (4) are integrally formed, the lower end of the elastic air bag (2) is provided with an air inlet hole (17), so that the inside of the elastic air bag (2) is communicated with the space in the bottle through the air inlet hole (17).

16. The bladder pump head of claim 13, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed, the elastic air bag (2) and the liquid inlet pipe (4) are integrally formed, the gas supplement structure (6) comprises an upper gas supplement structure (61) located at the top of the elastic air bag (2) and a lower gas supplement structure (62) located at the lower end of the elastic air bag (2).

17. A springless balloon pump head comprising a bottle cap (1) for being arranged on a bottle body, characterized in that The bottle cap (1) is provided with a pump chamber (16), the pump chamber (16) is provided with a resettable elastic air bag (2), the top of the elastic air bag (2) is provided with a liquid outlet nozzle (5), the lower end of the pump chamber (16) is provided with a liquid inlet pipe (4), the liquid outlet nozzle (5) and the liquid inlet pipe (4) are communicated through a liquid outlet pipe (3), and the elastic air bag (2) is provided with a gas supplement structure (6).

18. The bladder pump head of claim 17, wherein The liquid outlet pipe (3) is integrally formed with the liquid outlet nozzle (5), passes through the elastic air bag (2), the upper end of the liquid outlet pipe (3) is inserted into the liquid inlet pipe (4), and the lower end of the liquid inlet pipe (4) is provided with a one-way valve (9).

19. The bladder pump head of claim 17, wherein The liquid outlet pipe (3) is integrally formed with the liquid outlet nozzle (5), the liquid outlet pipe (3) passes through the elastic air bag (2), the liquid inlet pipe (4) is integrally formed at the lower end of the elastic air bag (2), the lower end of the liquid outlet pipe (3) is provided with an upper one-way valve (92), and the lower end of the elastic air bag (2) is provided with a lower one-way valve (91) at the connection with the liquid inlet pipe (4).

20. The bladder pump head of claim 17, wherein The liquid outlet pipe (3) is integrally formed with the liquid outlet nozzle (5), the liquid inlet pipe (4) is installed at the lower end of the pump chamber (16), the top of the elastic air bag (2) is provided with an upper one-way valve (92) at the connection with the liquid outlet pipe (3), the bottom of the elastic air bag (2) is provided with a lower one-way valve (91) at the connection with the liquid inlet pipe (4), and the upper one-way valve (92) and the lower one-way valve (91) are integrally formed with the elastic air bag (2).

21. The bladder pump head of claim 17, wherein The liquid outlet pipe (3) is the communication space of the elastic air bag (2) and the liquid outlet nozzle (5), the liquid inlet pipe (4) is integrally formed at the bottom of the elastic air bag (2), the liquid outlet nozzle (5) is provided with an upper one-way valve (92), the bottom of the elastic air bag (2) is provided with a lower one-way valve (91) at the connection with the liquid inlet pipe (4), and the lower one-way valve (91) is integrally formed with the elastic air bag (2).

22. The bladder pump head of claim 17, wherein The liquid outlet pipe (3) is integrally formed with the liquid outlet nozzle (5), the liquid inlet pipe (4) is installed at the lower end of the pump chamber (16), the top of the elastic air bag (2) is provided with an upper one-way valve (92), the bottom of the elastic air bag (2) is provided with a lower one-way valve (91) at the connection with the liquid inlet pipe (4), the upper one-way valve (92) is integrally formed with the elastic air bag (2), and the liquid outlet nozzle (5) is externally screwed with a quantitative ring (18) which can be adjusted up and down.

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