Spring-free pump head and lotion bottle

Abstract

A spring-free pump head and a lotion bottle. The spring-free pump head comprise a bottle cap (1) configured to be arranged on a bottle body, wherein a resettable elastic air bag (2) is provided on the bottle cap (1), and an air supplementing structure (6) is provided on the elastic air bag (2). For the spring-free pump head, by means of replacing the resetting effect of a metal spring with the compression and resetting functions of the elastic air bag, the problem of performance indicators of a product declining due to the pollution of lotion caused by the fact that the metal spring is immersed in the lotion for a long period of time and is prone to rusting is solved.

Description

Spring-free pump head and lotion bottle

Technical field

[0001] The present application relates to a packaging container, in particular to a springless pump head and a lotion bottle. [Background Technology]

[0002] Lotion pumps and bottles are commonly used to pump lotion from daily cleaning and skin care products such as hand soap, shower gel, and facial cleanser. They are widely used in daily life. Traditional lotion pumps use a metal spring as the reset component of the pump head. Long-term immersion in lotion can easily rust and contaminate the lotion. The structural design is complex and unreasonable, making it difficult to guarantee product performance indicators. For example, the spring may rust or be unable to pump liquid due to insufficient elasticity.

[0003] Therefore, this application is studied and proposed in response to the above problems.

[0004] Application Contents

[0005] The purpose of this application is to overcome the deficiencies of the prior art and provide a springless pump head and a lotion bottle.

[0006] This application is achieved through the following technical solutions:

[0007] The present application provides a springless pump head, comprising a bottle cap for being arranged on a bottle body, the bottle cap being provided with a resettable elastic airbag, and the elastic airbag being provided with an air replenishing structure; a liquid outlet tube being provided in the elastic airbag, a liquid inlet tube being provided at the lower end of the liquid outlet tube, and a liquid outlet nozzle being provided at the upper end of the liquid outlet tube; when the elastic airbag is pressed, the air in the bottle is compressed, and the emulsion is discharged through the liquid inlet tube, the liquid outlet tube and the liquid outlet nozzle; when the elastic airbag is released, external air is replenished into the bottle through the air replenishing structure.

[0008] A one-way valve is provided at the lower end of the liquid outlet pipe.

[0009] A first connecting piece is provided on the bottom surface of the elastic airbag, and an "H"-shaped connecting part is provided at the center of the first connecting piece. 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 provided in 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 connecting the liquid outlet pipe with the liquid inlet pipe.

[0010] A first cone protruding upward is provided on the inner side of the lower end of the liquid outlet pipe, a normally closed second through hole is provided at the top of the first cone, and the first cone and the second through hole together form the one-way valve.

[0011] A film is pressed between the lower end of the liquid outlet pipe and the upper end of the "H"-shaped connecting part. The lower end of the liquid outlet pipe has a plurality of first liquid guide notches locally along the circumference. The upper end of the "H"-shaped connecting part, the film and the first liquid guide notches constitute the one-way valve. When liquid is discharged, the film arches at the position of the first liquid guide notch, so that the liquid outlet pipe is connected with the liquid inlet pipe.

[0012] An inner layer portion is provided on the inner side of the liquid outlet pipe, the lower end of the inner layer portion is in contact with the top surface of the film, and the inner layer portion is provided with a second liquid guiding notch corresponding to the first liquid guiding notch.

[0013] A central portion is provided at the center of the inner layer portion, and the central portion abuts against the top surface of the film.

[0014] The present application also provides a springless pump head, comprising a bottle cap for being set on a bottle body, the bottle cap being provided with a resettable elastic airbag, the elastic airbag being provided with an air replenishing structure; a liquid outlet nozzle is installed on the elastic airbag, a liquid outlet tube is integrally formed on the liquid outlet nozzle, a sliding sleeve is provided at the bottom of the bottle cap, the liquid outlet tube is slidably inserted in the sliding sleeve, and a liquid inlet tube is provided at the lower end of the liquid outlet tube.

[0015] An elastic reinforcement portion is provided at the center of the elastic airbag, and the liquid outlet pipe passes through the elastic reinforcement portion.

[0016] The present application also provides a springless pump head, comprising a bottle cap for being set on a bottle body, a pump chamber being set on the bottle cap, a resettable elastic airbag being set in the pump chamber, and an air replenishing structure being set on the elastic airbag; a sealing ring is set on the elastic airbag, and the sealing ring abuts against the inner side of the pump chamber, a liquid outlet pipe is set at the bottom of the elastic airbag, a liquid inlet pipe connected to the liquid outlet pipe is installed at the bottom of the pump chamber, and a liquid outlet nozzle connected to the liquid outlet pipe is directly or indirectly provided on the top of the pump chamber.

[0017] The elastic airbag is provided with a plurality of stretching strips, which connect the top of the elastic airbag and the sealing ring. When the liquid outlet nozzle is pressed, the stretching strips are stretched. When the liquid outlet nozzle is released, the stretching strips retract and return to normal from the stretched state.

[0018] The present application also provides a springless pump head, comprising a bottle cap for being set on a bottle body, a pump chamber being installed on the inner side of the bottom of the bottle cap, an elastic airbag being installed on the outer side of the top of the bottle cap, the upper end of the pump chamber being connected to the lower end of the elastic airbag, a liquid inlet pipe being installed at the lower end of the pump chamber, an air replenishing structure being provided on the elastic airbag, a liquid outlet nozzle being installed on the elastic airbag, an upper one-way valve being provided in the liquid outlet nozzle, and a lower one-way valve at the bottom of the pump chamber.

[0019] The present application also provides a springless pump head, comprising a bottle cap for being set on a bottle body, an elastic airbag being installed on the outer side of the top of the bottle cap, an air replenishing structure being provided on the elastic airbag, a liquid inlet tube being installed at the bottom of the elastic airbag, a liquid outlet nozzle being installed at the top of the elastic airbag, and the liquid inlet tube and the liquid outlet nozzle being connected through the liquid outlet tube.

[0020] The liquid outlet pipe is the elastic airbag itself. The elastic airbag and the liquid inlet pipe are integrally formed. An upper one-way valve is installed at the connection between the elastic airbag and the liquid outlet nozzle, and a lower one-way valve is provided at the connection between the elastic airbag and the liquid inlet pipe.

[0021] The liquid outlet pipe and the liquid outlet nozzle are integrally formed, the elastic airbag and the liquid inlet pipe are integrally formed, and an air inlet hole is provided at the lower end of the elastic airbag so that the interior of the elastic airbag is connected with the space in the bottle through the air inlet hole.

[0022] 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 replenishing structure includes an upper air replenishing structure located at the top of the elastic airbag and a lower air replenishing structure located at the lower end of the elastic airbag.

[0023] The present application also provides a springless pump head, comprising a bottle cap for being set on a bottle body, a pump chamber being set on the bottle cap, a resettable elastic airbag being set in the pump chamber, a liquid outlet nozzle being installed on the top of the elastic airbag, a liquid inlet pipe being installed at the lower end of the pump chamber, the liquid outlet nozzle and the liquid inlet pipe being connected through the liquid outlet pipe, and an air replenishing structure being provided on the elastic airbag.

[0024] The liquid outlet pipe is integrally formed with the liquid outlet nozzle and passes through the elastic airbag. The liquid outlet pipe is inserted into the upper end of the liquid inlet pipe, and a one-way valve is provided at the lower end of the liquid inlet pipe.

[0025] The liquid outlet pipe is integrally formed with the liquid outlet nozzle, and the liquid outlet pipe passes through the elastic airbag. The liquid inlet pipe is integrally formed at the lower end of the elastic airbag. An upper one-way valve is provided at the lower end of the liquid outlet pipe, and a lower one-way valve is provided at the connection between the lower end of the elastic airbag and the liquid inlet pipe.

[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 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, the lower one-way valve and the elastic airbag are integrally formed.

[0027] The liquid outlet pipe is the connecting space between the elastic airbag and the liquid outlet nozzle. The liquid inlet pipe is integrally formed at the bottom of the elastic airbag. An upper one-way valve is provided on the liquid outlet nozzle 5. A lower one-way valve is provided at the connection between the bottom of the elastic airbag and the liquid inlet pipe. The lower one-way valve is integrally formed with the elastic airbag.

[0028] 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, 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 elastic airbag are integrally formed, and a quantitative ring that can be adjusted up and down is installed on the outer side of the liquid outlet nozzle through a thread.

[0029] The present application also provides a springless pump head, comprising a bottle cap for being arranged on a bottle body, a pump chamber being arranged in the bottle cap, a resettable elastic airbag being arranged in the pump chamber, a piston portion being arranged on the outer side of the elastic airbag, a sealing ring being arranged on the outer side of the piston portion, and an end portion of the sealing ring being sealed and abutting against the inner side of the pump chamber; a liquid inlet pipe being arranged at the lower end of the pump chamber, a liquid outlet nozzle being arranged at the upper end of the pump chamber, the liquid inlet pipe and the liquid outlet nozzle being connected through a liquid outlet channel, and the elastic airbag being pressed, the piston portion and the sealing ring compress the air in the bottle, and the emulsion is discharged through the liquid outlet channel and the liquid outlet nozzle, and the elastic airbag being released, the piston portion and the sealing ring rebound, so that negative pressure is formed in the bottle, and external air is sucked in.

[0030] A one-way valve is arranged in the liquid outlet channel.

[0031] A first lower liquid outlet channel is provided in the pump chamber, a first upper liquid outlet channel is provided on the liquid outlet nozzle, the first lower liquid outlet channel and the first upper liquid outlet channel are spliced ​​together to form the liquid outlet channel, and the one-way valve is provided at the lower end of the first upper liquid outlet channel or at the bottom of the first lower liquid outlet channel.

[0032] The liquid outlet channel, the one-way valve and the elastic airbag are integrally formed.

[0033] The liquid outlet channel and the liquid outlet nozzle are integrally formed, and the one-way valve is arranged at the lower end of the liquid outlet channel.

[0034] A second lower liquid outlet channel is integrally formed in the elastic airbag, a second upper liquid outlet channel is provided on the liquid outlet nozzle, and the second lower liquid outlet channel and the second upper liquid outlet channel are spliced ​​together to form the liquid outlet channel.

[0035] The one-way valve is arranged at the lower end of the second upper liquid outlet channel.

[0036] The one-way valve and the elastic airbag are integrally formed.

[0037] The present application also provides a lotion bottle with a soft bag, comprising a bottle body, a bottle cap installed on the bottle mouth of the bottle body, the bottle cap is provided with a resettable elastic airbag, the elastic airbag is provided with an air replenishing structure, a liquid outlet of the elastic airbag is provided with a liquid outlet nozzle, the lower end of the elastic airbag is installed with a soft bag located in the bottle body, and the soft bag is connected to the liquid outlet nozzle through a liquid outlet tube.

[0038] The air-inflating structure includes an upper air-inflating structure located on the top surface of the elastic airbag, and a lower air-inflating structure located at the bottom of the elastic airbag. The lower air-inflating structure is connected to the air barrier between the soft bag and the bottle body; the liquid outlet pipe and the liquid outlet nozzle are integrally formed, and the lower end of the liquid outlet pipe passes through the bottom of the elastic airbag.

[0039] The liquid outlet pipe includes an upper liquid outlet pipe integrally formed with the liquid outlet nozzle, and a lower liquid outlet pipe integrally formed with the elastic airbag. The lower end of the upper liquid outlet pipe passes through the bottom of the elastic airbag and is inserted into the upper end of the lower liquid outlet pipe.

[0040] The liquid outlet pipe includes an upper liquid outlet pipe integrally formed with the liquid outlet nozzle, and a lower liquid outlet pipe integrally formed with the elastic airbag. The lower end of the upper liquid outlet pipe passes through the bottom of the elastic airbag and is inserted into the upper end of the lower liquid outlet pipe. An air inlet hole is provided between the bottom of the elastic airbag and the soft bag, and the air replenishing structure is connected to the air barrier between the soft bag and the bottle body.

[0041] An upper one-way valve for discharging the air in the elastic airbag to the outside is provided at the connection between the elastic airbag and the liquid outlet nozzle, and a lower one-way valve for discharging the liquid in the soft bag to the elastic airbag is provided at the bottom of the elastic airbag, and the air replenishing structure is connected to the air barrier between the soft bag and the bottle body.

[0042] The present application also provides a lotion bottle with a soft bag, which includes a resettable elastic airbag, a liquid outlet nozzle provided at the liquid outlet of the elastic airbag, a soft bag sealed at the lower end of the elastic airbag, and the soft bag and the liquid outlet nozzle connected through a liquid outlet tube.

[0043] An upper one-way valve for discharging air from the elastic airbag to the outside is provided at the connection between the elastic airbag and the liquid outlet nozzle, and a lower one-way valve for discharging liquid from the soft bag to the elastic airbag is provided at the bottom of the elastic airbag.

[0044] A bottle body for wrapping the soft bag is installed on the outside of the soft bag, a bottle cap is installed on the elastic airbag, and the bottle cap is installed on the bottle body. The bottle body is provided with a plurality of through-hole structures as air replenishing structures.

[0045] Compared with the prior art, this application has the following advantages:

[0046] 1. The present application provides a resettable elastic airbag on the bottle cap, and an air replenishing structure is provided on the elastic airbag; a liquid outlet pipe is provided in the elastic airbag, a liquid inlet pipe is provided at the lower end of the liquid outlet pipe, and a liquid outlet nozzle is provided at the upper end of the liquid outlet pipe. This product has two liquid outlet methods, one is to press the elastic airbag, and air is discharged from the liquid outlet nozzle to form a negative pressure to draw out the liquid in the bottle; the other is to press the elastic airbag, and air enters the bottle to squeeze out the liquid in the bottle. The compression and reset function of the elastic airbag replaces the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to long-term immersion in the emulsion, thereby contaminating the emulsion and causing a decline in product performance indicators.

[0047] 2. The present application provides a pump chamber in the bottle cap, a resettable elastic airbag in the pump chamber, a piston portion on the outside of the elastic airbag, a sealing ring on the outside of the piston portion, and an end of the sealing ring sealingly abuts against the inner side of the pump chamber; a liquid inlet pipe is provided at the lower end of the pump chamber, a liquid outlet nozzle is provided at the upper end of the pump chamber, the liquid inlet pipe and the liquid outlet nozzle are connected through a liquid outlet channel, a one-way valve is provided in the liquid outlet channel, and the compression and recovery functions of the elastic airbag replace the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to long-term immersion in the emulsion, thereby contaminating the emulsion and causing a decline in product performance indicators.

[0048] 3. The present application provides a resettable elastic airbag on the bottle cap, the elastic airbag is provided with an air replenishing structure, the liquid outlet of the elastic airbag is provided with a liquid outlet nozzle, the lower end of the elastic airbag is installed with a soft bag located in the bottle body, the soft bag and the liquid outlet nozzle are connected through a liquid outlet pipe, and this product has two liquid outlet methods, one is to press the elastic airbag, the air is discharged from the liquid outlet nozzle, forming a negative pressure, and the liquid in the soft bag is extracted, and the other is to press the elastic airbag, the air enters the bottle, and the liquid in the soft bag is squeezed out, and the compression and reset function of the elastic airbag replaces the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to being immersed in the emulsion for a long time, thereby contaminating the emulsion and causing a decline in product performance indicators.

Brief Description of the Drawings

[0049] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, wherein:

[0050] Figure 1 is a structural diagram of Scheme 1 of the present application. Figure 2 is a cross-sectional schematic diagram of the first embodiment of Scheme 1. Figure 3 is a cross-sectional schematic diagram of the second embodiment of Scheme 1. Figure 4 is a cross-sectional schematic diagram of the third embodiment of Scheme 1. Figure 5 is a cross-sectional schematic diagram of the fourth embodiment of Scheme 1. Figure 6 is a cross-sectional schematic diagram of the fifth embodiment of Scheme 1. Figure 7 is a cross-sectional schematic diagram of the sixth embodiment of Scheme 1. Figure 8 is a cross-sectional schematic diagram of the seventh embodiment of Scheme 1. Figure 9 is a cross-sectional schematic diagram of the eighth embodiment of Scheme 1. Figure 10 is a cross-sectional schematic diagram of the ninth embodiment of Scheme 1. Figure 11 is a cross-sectional schematic diagram of the tenth embodiment of Scheme 1. Figure 12 is a cross-sectional schematic diagram of the eleventh embodiment of Scheme 1. Figure 13 is a cross-sectional schematic diagram of the twelfth embodiment of Scheme 1. Figure 14 is a cross-sectional schematic diagram of the thirteenth embodiment of Scheme 1. Figure 15 is a cross-sectional schematic diagram of the fourteenth embodiment of Scheme 1. Figure 16 is a cross-sectional schematic diagram of the fifteenth embodiment of Scheme 1. Figure 17 is a cross-sectional schematic diagram of the sixteenth embodiment of Scheme 1. Figure 18 is a cross-sectional schematic diagram of the seventeenth embodiment of Scheme 1. Figure 19 is a schematic cross-sectional view of the eighteenth embodiment of Scheme 1. Figure 20 is a schematic cross-sectional view of the nineteenth embodiment of Scheme 1. Figure 21 is a schematic cross-sectional view of the twentieth embodiment of Scheme 1. Figure 22 is a schematic cross-sectional view of the twenty-first embodiment of Scheme 1. Figure 23 is a schematic cross-sectional view of the twenty-second embodiment of Scheme 1. Figure 24 is a schematic cross-sectional view of the twenty-third embodiment of Scheme 1. Figure 25 is a schematic cross-sectional view of the twenty-fourth embodiment of Scheme 1. Figure 26 is a schematic cross-sectional view of the twenty-fifth embodiment of Scheme 1. Figure 27 is a schematic cross-sectional view of the twenty-sixth embodiment of Scheme 1. Figure 28 is a structural diagram of the first elastic airbag of Scheme 1. Figure 29 is a three-dimensional cross-sectional view of the first connector of Scheme 1. Figure 30 is a structural diagram of Scheme 2 of the present application. Figure 31 is one of the structural diagrams of the elastic airbag of Scheme 2. Figure 32 is another of the structural diagrams of the elastic airbag of Scheme 2. Figure 33 is a schematic cross-sectional view of the first embodiment of Scheme 2. Figure 34 is a schematic cross-sectional view of the second embodiment of Scheme 2. Figure 35 is a schematic cross-sectional view of the third embodiment of Scheme 2. Figure 36 is a schematic cross-sectional view of the fourth embodiment of Scheme 2. Figure 37 is a schematic cross-sectional view of the fifth embodiment of Scheme 2. Figure 38 is a schematic cross-sectional view of the sixth embodiment of Scheme 2. Figure 39 is a schematic cross-sectional view of the seventh embodiment of Scheme 2. Figure 40 is a schematic cross-sectional view of the eighth embodiment of Scheme 2. Figure 41 is a schematic cross-sectional view of the ninth embodiment of Scheme 2. Figure 42 is a schematic cross-sectional view of the tenth embodiment of Scheme 2. Figure 43 is a schematic cross-sectional view of the eleventh embodiment of Scheme 2. Figure 44 is a schematic cross-sectional view of the twelfth embodiment of Scheme 2. Figure 45 is a schematic cross-sectional view of the thirteenth embodiment of Scheme 2. Figure 46 is a schematic cross-sectional view of the fourteenth embodiment of Scheme 2. Figure 47 is a schematic cross-sectional view of the fifteenth embodiment of Scheme 2. Figure 48 is a schematic cross-sectional view of the sixteenth embodiment of Scheme 2.Figure 49 is a structural diagram of Scheme 3 of the present application. Figure 50 is a cross-sectional schematic diagram of Example 1 in Scheme 3. Figure 51 is a cross-sectional schematic diagram of Example 2 in Scheme 3. Figure 52 is a cross-sectional schematic diagram of Example 3 in Scheme 3. Figure 53 is a cross-sectional schematic diagram of Example 4 in Scheme 3. Figure 54 is a cross-sectional schematic diagram of Example 5 in Scheme 3. Figure 55 is a cross-sectional schematic diagram of Example 6 in Scheme 3. Figure 56 is a cross-sectional schematic diagram of Example 7 in Scheme 3. Figure 57 is a structural diagram of Example 8 in Scheme 3. Figure 58 is a cross-sectional schematic diagram of Example 8 in Scheme 3. [Specific implementation method]

[0051] The following describes the implementation of the present application in detail with reference to the accompanying drawings.

[0052] This application plan 1:

[0053] Referring to Figures 1 to 29, a spring-free airbag pump head includes a bottle cap 1 for being set on a bottle body, the bottle cap 1 is provided with a resettable elastic airbag 2, and the elastic airbag 2 is provided with an air replenishing structure 6; a liquid outlet pipe 3 is provided in the elastic airbag 2, the lower end of the liquid outlet pipe 3 is provided with a liquid inlet pipe 4, and the upper end of the liquid outlet pipe 3 is provided with a liquid outlet nozzle 5. This product has two liquid discharge methods, one is to press the elastic airbag, and air is discharged from the liquid outlet nozzle to form a negative pressure to draw out the liquid in the bottle; the other is to press the elastic airbag, and air enters the bottle to squeeze out the liquid in the bottle. The compression and reset functions of the elastic airbag replace the function of the pump chamber and the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to long-term immersion in the emulsion and contaminates the emulsion, resulting in a decline in product performance indicators.

[0054] The air-supplying structure 6 may be provided on the elastic airbag 2 or on the bottle cap 1 , and the gap between the elastic airbag 2 and the bottle cap 1 may be used as the air-supplying structure.

[0055] First embodiment: In this embodiment, there is no one-way valve structure, and the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed, as shown in FIG2 .

[0056] A one-way valve 9 is provided at the lower end of the liquid outlet pipe 3 .

[0057] Second embodiment: the liquid outlet pipe 3 , the one-way valve 9 and the elastic airbag 2 are integrally formed, and the liquid outlet pipe 3 is a wave-structured pipe, as shown in FIG3 .

[0058] The third embodiment: the liquid outlet pipe 3 , the one-way valve 9 and the elastic airbag 2 are integrally formed, and the liquid outlet pipe 3 is a straight pipe, refer to FIG. 4 .

[0059] In addition, the liquid outlet pipe 3 can also be a threaded pipe or other structures.

[0060] A first connecting member 7 is provided on the bottom surface of the elastic airbag 2, and an "H"-shaped connecting part 8 is provided at the center of the first connecting member 7. 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 provided 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 connecting the liquid outlet pipe 3 with the liquid inlet pipe 4.

[0061] A first cone protruding upward is provided on the inner side of the lower end of the liquid outlet pipe 3 , and a normally closed second through hole is provided at the top of the first cone. The first cone and the second through hole together form the one-way valve.

[0062] A film 10 is pressed between the lower end of the liquid outlet pipe 3 and the upper end of the "H"-shaped connecting part 8. The lower end of the liquid outlet pipe 3 has a plurality of first liquid guide notches 11 locally along the circumference. The upper end of the "H"-shaped connecting part 8, the film 10 and the first liquid guide notches 11 constitute the one-way valve 9. When 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 connected with the liquid inlet pipe 4.

[0063] Fourth embodiment: the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed, the liquid outlet pipe 3 is a wave-structured tube, and the elastic airbag 2 has a diamond-shaped structure, refer to FIG5 .

[0064] Fifth embodiment: the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed, the liquid outlet pipe 3 is a wave-structured tube, and the elastic airbag 2 has a spherical shape, refer to FIG6 .

[0065] Sixth embodiment: the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed, the liquid outlet pipe 3 is a wave-structured tube, and the elastic airbag 2 has a wave-shaped outer shape, refer to FIG. 7 .

[0066] In addition, the elastic airbag 2 may also have a threaded shape or other structure.

[0067] An inner layer portion 12 is provided inside the liquid outlet pipe 3 , the lower end of the inner layer portion 12 abuts against the top surface of the film 10 , and a second liquid guiding notch 13 is provided in the inner layer portion 12 corresponding to the first liquid guiding notch 11 .

[0068] A central portion 14 is provided at the center of the inner layer portion 12 , and the central portion 14 abuts against the top surface of the film 10 .

[0069] The three structures of the liquid outlet pipe 3, the inner layer part 12 and the central part 14 can exist at the same time, and the lower ends can be in contact with the film 10 at the same time, or only the central part 14 can be in contact with the film 10. The lower ends of the liquid outlet pipe 3 and the inner layer part 12 are set at a certain distance from the upper bottom of the "H"-shaped connecting part 8 to provide space for the film 10 to curl up.

[0070] In addition, manufacturers can choose to set one to three of the liquid outlet pipe 3, the inner layer part 12, and the central part 14 on the liquid outlet pipe 3 by modifying the mold, etc. according to different needs. The requirement is to ensure that the film 10 can arch upward when discharging liquid, so that the liquid outlet pipe 3 is connected with the liquid inlet pipe 4. When no liquid is discharged, the film 10 is pressed down again and fits with the upper bottom of the "H"-shaped connecting part 8 to cover the first through hole, thereby preventing liquid from flowing back.

[0071] A second cone is provided on one side of the air outlet end of the air-replenishing structure 6, and a normally closed third through hole is provided at the top of the second cone. When air is replenished, the air expands the third through hole to form a passage, and the side wall of the second cone 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 is reset to the middle and closes the third through hole again.

[0072] A fourth through hole is provided on the first connecting member 7 corresponding to the second cone, and the second cone passes through the fourth through hole.

[0073] A springless pump head includes a bottle cap 1 for being set on a bottle body, the bottle cap 1 being provided with a resettable elastic airbag 2, and the elastic airbag 2 being provided with an air replenishing structure 6; a liquid outlet nozzle 5 is installed on the elastic airbag 2, and a liquid outlet pipe 3 is integrally formed on the liquid outlet nozzle 5; a sliding sleeve is provided at the bottom of the bottle cap 1, and the liquid outlet pipe 3 is slidably inserted in the sliding sleeve, and a liquid inlet pipe 4 is provided at the lower end of the liquid outlet pipe 3.

[0074] The seventh embodiment: the liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, and a sliding sleeve is provided at the bottom of the bottle cap 1. The liquid outlet pipe 3 is slidably inserted into the sliding sleeve. The liquid outlet pipe 3 passes through the elastic airbag 2. The elastic airbag 2 is provided with an air replenishment one-way valve corresponding to the air replenishment structure 6, and the air replenishment one-way valve may not be provided, refer to Figure 8.

[0075] The eighth embodiment: the liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, an elastic reinforcement part is provided at the center of the elastic airbag 2, the liquid outlet pipe 3 passes through the elastic reinforcement part, and the elastic airbag 2 is provided with an air replenishment one-way valve corresponding to the air replenishment structure 6, or the air replenishment one-way valve may not be provided, refer to Figure 9.

[0076] Ninth 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 outlet pipe 3 is provided at the bottom of the elastic airbag 2, and the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed. The one-way valve 9 is provided at the upper end of the liquid outlet pipe 3, and the liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The air replenishing structure 6 is provided at the bottom of the elastic airbag 2, and the liquid outlet nozzle 5 is pressed, and 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 liquid discharge effect, refer to Figure 10.

[0077] A tenth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, and a sealing ring is provided at the lower end of the elastic airbag 2, which abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is provided in the pump chamber 16, and the liquid outlet pipe 3 and the pump chamber 16 are integrally formed. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16, and the one-way valve 9 is provided at the upper end of the liquid inlet pipe 4. The air replenishing structure 6 is provided at the bottom of the elastic airbag 2. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is stretched, and 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 liquid discharge effect, refer to Figure 11.

[0078] The eleventh embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, and the lower end of the elastic airbag 2 is provided with a sealing ring, which abuts against the inner side of the pump chamber 16. The liquid outlet pipe 3 is provided in the pump chamber 16, and the liquid outlet pipe 3 and the pump chamber 16 are integrally formed. The liquid inlet pipe 4 is installed at the lower end of the pump chamber 16, and the one-way valve 9 is provided at the upper end of the liquid inlet pipe 4. The air replenishing structure 6 is provided at the top of the elastic airbag 2. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is stretched, and 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 liquid discharge effect, refer to Figure 12.

[0079] The twelfth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the lower end of the elastic airbag 2 is provided with a sealing ring, the sealing ring is in contact with the inner side of the pump chamber 16, the liquid outlet pipe 3 is provided at the bottom of the elastic airbag 2, the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed, the liquid outlet pipe 3 is a straight pipe, the one-way valve 9 is provided 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 replenishing structure 6 is provided at the top of the elastic airbag 2, the liquid outlet nozzle 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 liquid discharge effect, refer to Figure 13.

[0080] The thirteenth embodiment: The difference from the twelfth embodiment is that the liquid outlet pipe 3 is a wave tube structure, refer to Figure 14.

[0081] Fourteenth 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 outlet pipe 3 is provided at the bottom of the elastic airbag 2, and the liquid outlet pipe 3 and the elastic airbag 2 are integrally formed. The one-way valve 9 is provided at the upper end of the liquid outlet pipe 3, and the liquid inlet pipe 4 is installed at the lower end of the pump chamber 16. The air replenishing structure 6 is provided at the top of the elastic airbag 2, and a closed cavity is provided in the elastic airbag 2. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is stretched, and 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 discharge. During the process of pressing and stretching, the volume in the airbag increases and the air pressure decreases. After releasing the hand, the rebound force will be greater, refer to Figure 15.

[0082] Fifteenth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the lower end of the elastic airbag 2 is provided with a sealing ring, the sealing ring is in contact with the inner side of the pump chamber 16, the liquid inlet pipe 4 is installed at the lower end of the pump chamber 16, the air replenishing structure 6 is provided at the top of the elastic airbag 2, the liquid outlet pipe 3 is the pump chamber 16 itself, the one-way valve 9 of this embodiment 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 and the liquid inlet pipe 4 The elastic airbag 2 and the upper one-way valve 92 are integrally formed. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is stretched, and the air inside the pump chamber 16 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92. When the liquid outlet nozzle 5 is released, the elastic airbag 2 shrinks and recovers, and a negative pressure is formed inside the pump chamber 16. The liquid in the bottle enters the pump chamber 16 through the lower one-way valve 91 and the liquid inlet pipe 4. At the same time, external air is replenished into the bottle through the air replenishing structure 6. At this time, the pump chamber 16 stores liquid, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, as shown in Figure 16.

[0083] The sixteenth embodiment: The difference from the fifteenth embodiment is that the lower one-way valve 91 and the liquid inlet pipe 4 are two different parts, which are installed by plug-in installation, refer to Figure 17.

[0084] 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, the liquid outlet pipe 3 is the pump chamber 16 itself, the air replenishing structure 6 is provided on the elastic airbag 2, and the liquid outlet nozzle 5 is installed on the elastic airbag 2. The one-way valve 9 of this embodiment includes an upper one-way valve 92 located in the liquid outlet nozzle 5 and a lower one-way valve 92 located at the bottom of the pump chamber 16. The one-way valve 91 presses the liquid outlet nozzle 5, the elastic airbag 2 is compressed, and the air in the pump chamber 16 is discharged through the upper one-way valve 92 and the liquid outlet nozzle 5. Release the liquid outlet nozzle 5, the elastic airbag 2 is restored, and a negative pressure is formed between the elastic airbag 2 and the internal space of the pump chamber 16. The liquid in the bottle enters the pump chamber 16 through the liquid inlet pipe 4 and the lower one-way valve 91. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, the pump chamber 16 stores liquid, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, refer to Figure 18.

[0085] The eighteenth embodiment: the liquid outlet pipe 3 is the elastic airbag 2 itself. The one-way valve 9 of this embodiment includes an upper one-way valve 92 at the connection between the top of the elastic airbag 2 and the liquid outlet nozzle 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 replenishing structure 6 is arranged at the bottom of the elastic airbag 2, pressing the liquid outlet nozzle 5. The elastic airbag 2 is compressed, and the air in the elastic airbag 2 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92. The elastic airbag 2 is released, and the elastic airbag 2 is restored. A negative pressure is formed in the elastic airbag 2, and the liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, refer to Figure 19.

[0086] 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 hole 17 is provided at the lower end of the elastic airbag 2, so that the interior of the elastic airbag 2 is connected with the space in the bottle through the air inlet hole 17. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is compressed, and the air pressure in the bottle increases, squeezing the liquid in the bottle toward the liquid inlet pipe 4 and discharging it in turn 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 negative pressure is formed in the elastic airbag 2. The external air is replenished into the bottle through the air replenishing structure 6, and the air replenished into the bottle is replenished into the airbag through the air inlet hole 17. Refer to Figure 20.

[0087] The 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. The air-replenishing structure 6 of this embodiment includes an upper air-replenishing structure 61 located at the top of the elastic airbag 2 and a lower air-replenishing 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-replenishing structure 62. The air pressure in the bottle increases, and the liquid in the bottle is squeezed toward the liquid inlet pipe 4, and discharged through the liquid inlet pipe 4, the liquid outlet pipe 3 and the liquid outlet nozzle 5 in turn. When the elastic airbag 2 is released, the elastic airbag 2 recovers, and negative pressure is formed in the elastic airbag 2. The external air is replenished into the elastic airbag 2 through the upper air-replenishing structure 61, and then replenished into the bottle through the lower air-replenishing structure 62. Refer to Figure 21.

[0088] The twenty-first embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the upper end of the elastic airbag 2 is provided with a sealing ring, 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 in the upper end of the liquid inlet pipe 4, the lower end of the liquid inlet pipe 4 is provided with the one-way valve 9, the liquid outlet nozzle 5 is pressed, the liquid outlet pipe 3 slides in the liquid inlet pipe 4, the air in the elastic airbag 2 enters the bottle, and the liquid is squeezed toward the liquid inlet pipe 4, and the liquid is discharged through the one-way valve 9, the liquid inlet pipe 4, the liquid outlet pipe 3 and the liquid outlet nozzle 5 in turn, refer to Figure 22.

[0089] The twenty-second embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the upper and lower ends of the elastic airbag 2 are provided with sealing rings, the liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, passing through the elastic airbag 2, and 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 The liquid outlet nozzle 5, the elastic airbag 2 is compressed, and the air in the elastic airbag 2 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92 and the liquid outlet pipe 3. The elastic airbag 2 is released and restored. A negative pressure is formed in the elastic airbag 2, and the liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, as shown in Figure 23.

[0090] The twenty-third embodiment: The difference from the twenty-second embodiment is that no sealing rings are provided at the upper and lower ends of the elastic airbag 2, so pressing is smoother, refer to Figure 24.

[0091] The twenty-fourth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the upper end of the elastic airbag 2 is provided with a sealing ring, the liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, 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, the lower one-way valve 91 and the elastic The airbag 2 is integrally formed. When the liquid outlet nozzle 5 is pressed, the elastic airbag 2 is compressed, and the air in the elastic airbag 2 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92 and the liquid outlet pipe 3. When the elastic airbag 2 is released, the elastic airbag 2 is restored, and negative pressure is formed in the elastic airbag 2. The liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, refer to Figure 25.

[0092] The twenty-fifth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, the elastic airbag 2 is provided with a sealing ring, the liquid outlet pipe 3 is the communication space between the elastic airbag 2 and the liquid outlet nozzle 5, and 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 nozzle 5 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 lower one-way valve 91 is integrally formed with the elastic airbag 2, and the liquid outlet nozzle is pressed. 5, the elastic airbag 2 is compressed, and the air in the communication space between the elastic airbag 2 and the liquid outlet nozzle 5 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92. When the elastic airbag 2 is released, a negative pressure is formed in the communication space between the elastic airbag 2 and the liquid outlet nozzle 5. The liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. Due to gravity, it is deposited in the elastic airbag at the lower end. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, as shown in Figure 26.

[0093] The twenty-sixth embodiment: The bottle cap 1 is provided with a pump chamber 16, the elastic airbag 2 is installed in the pump chamber 16, a sealing ring is provided on the elastic airbag 2, the liquid outlet pipe 3 and the liquid outlet nozzle 5 are integrally formed, 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 connection between the bottom of the elastic airbag 2 and the liquid inlet pipe 4. The upper one-way valve 92 is integrally formed with the elastic airbag 2, and the outer side of the liquid outlet nozzle 5 is threadedly installed with a quantitative ring 18 that can be adjusted up and down. The quantitative ring 18 can be used in In some embodiments, the position of the quantitative ring 18 is adjusted to control the pressing stroke of the liquid outlet nozzle 5, thereby achieving a quantitative liquid discharge effect. By pressing the liquid outlet nozzle 5, the elastic airbag 2 is compressed, and the air in the elastic airbag 2 is discharged from the liquid outlet nozzle 5 through the upper one-way valve 92 and the liquid outlet pipe 3. When the elastic airbag 2 is released, the elastic airbag 2 is restored to form a negative pressure, and the liquid in the bottle enters the elastic airbag 2 through the liquid inlet pipe 4 and the lower one-way valve 91. At the same time, the external air is replenished into the bottle through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, refer to Figure 27.

[0094] In the ninth through sixteenth embodiments, the elastic airbag 2 is provided with a plurality of stretch strips connecting the top of the elastic airbag 2 and the sealing ring. When the liquid outlet nozzle 5 is pressed, the stretch strips are stretched, and when the liquid outlet nozzle 5 is released, the stretch strips retract, returning from the stretched state to the normal state. In the remaining embodiments, the elastic airbag 2 is compressed during operation and returns from the compressed state to the normal state during recovery. In this embodiment, the top of the bottle cap 1 or pump chamber 16 is provided with a liquid outlet nozzle 5 that is directly or indirectly connected to the liquid outlet pipe 3.

[0095] In this product, the liquid in the bottle is discharged in sequence through the liquid inlet pipe 4, the liquid outlet pipe 3 and the liquid outlet nozzle 5, wherein everything between the liquid inlet pipe 4 and the liquid outlet nozzle 5 can serve as the liquid outlet pipe 3, that is, the liquid outlet pipe 3 can be integrally formed with the liquid outlet nozzle 5, can be integrally formed with the elastic airbag 2, can be the elastic airbag 2 itself, can be the pump chamber 16 itself, etc.

[0096] Option 2:

[0097] As shown in Figures 30-48, the present application discloses a springless pump head, comprising a bottle cap 1 for being arranged on a bottle body, a pump chamber 16 being arranged in the bottle cap 1, a resettable elastic airbag 2 being arranged in the pump chamber 16, a piston portion 21 being arranged on the outside of the elastic airbag 2, a sealing ring 22 being arranged on the outside of the piston portion 21, and an end of the sealing ring 22 being sealed against the inner side of the pump chamber 16; a liquid inlet pipe 4 being arranged at the lower end of the pump chamber 16, a liquid outlet nozzle 5 being arranged at the upper end of the pump chamber 16, and the liquid inlet pipe 4 and the liquid outlet nozzle 5 being connected by a liquid outlet channel A one-way valve 9 is provided in the liquid outlet channel. When the elastic airbag 2 is pressed, the piston part 21 and the sealing ring 22 compress the air in the bottle, and the emulsion is discharged through the liquid outlet channel and the liquid outlet nozzle 5. When the elastic airbag 2 is released, the piston part 21 and the sealing ring 22 rebound, so that negative pressure is formed in the bottle, and the external air is sucked in. The compression and recovery function of the elastic airbag replaces the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to long-term immersion in the emulsion, thereby contaminating the emulsion and causing a decline in product performance indicators.

[0098] As shown in Figure 30, the lower end of the pump chamber 16 is provided with an air-injection hole 24, and the lower end of the elastic airbag 2 is open. When the liquid outlet nozzle 5 is pressed, the piston part 21 pushes the air in the air-injection channel and the air in the elastic airbag 2 into the bottle body from the air-injection hole 24. When the elastic airbag 2 is restored, negative pressure is formed in the bottle, and external air is sucked in to realize the air-injection operation.

[0099] Preferably, a first lower liquid outlet channel 19 is provided in the pump chamber 16, and a first upper liquid outlet channel 20 is provided on the liquid outlet nozzle 5. The first lower liquid outlet channel 19 and the first upper liquid outlet channel 20 are spliced ​​to form the liquid outlet channel, and the one-way valve 9 is provided at the lower end of the first upper liquid outlet channel 20 or the one-way valve 9 is provided at the bottom of the first lower liquid outlet channel 19.

[0100] First embodiment: the liquid outlet nozzle 5, the elastic airbag 2 and the one-way valve 9 are integrally formed, and the one-way valve 9 is arranged at the lower end of the first upper liquid outlet channel 20, as shown in FIG33 .

[0101] Second embodiment: the liquid outlet nozzle 5 is integrally formed with the elastic airbag 2, and the one-way valve 9 is provided at the lower end of the first upper liquid outlet channel 20, as shown in FIG34 .

[0102] Third embodiment: the liquid outlet nozzle 5, the elastic airbag 2 and the one-way valve 9 are all independent parts, and the one-way valve 9 is arranged at the lower end of the first upper liquid outlet channel 20, as shown in Figure 35.

[0103] Fourth embodiment: The elastic airbag 2 is located on the top surface of the piston part 21 and has an integrally formed elastic force increasing part extending upward. The elastic force increasing part is mounted on the outside of the first upper liquid outlet channel 20, and the one-way valve 9 is arranged at the lower end of the first upper liquid outlet channel 20, as shown in Figure 36.

[0104] Fifth embodiment: The elastic airbag 2 is located on the top surface of the piston part 21 and has an integrally formed elastic force increasing part extending upward. The elastic force increasing part is mounted on the outside of the first upper liquid outlet channel 20, and the one-way valve 9 is arranged at the bottom of the first lower liquid outlet channel 19, as shown in Figure 37.

[0105] Sixth embodiment: The liquid outlet channel, the one-way valve 9 and the elastic airbag 2 are integrally formed. The elastic airbag 2 is a wave-shaped structure as a whole. The liquid outlet channel is a straight tube. The elastic airbag 2 is located on the top surface of the piston part 21 and has an integrally formed elastic force increasing part extending upward. The one-way valve 9 is arranged at the upper end of the liquid outlet channel, as shown in Figure 38.

[0106] Seventh embodiment: The liquid outlet channel, the one-way valve 9 and the elastic airbag 2 are integrally formed. The lower end of the liquid outlet channel is a threaded tube, which increases the support force for recovery after the elastic airbag 2 is pressed. The upper end of the liquid outlet channel is a straight tube, and the one-way valve 9 is arranged at the lower end of the liquid outlet channel, as shown in Figure 39.

[0107] Eighth embodiment: The liquid outlet channel, the one-way valve 9 and the elastic airbag 2 are integrally formed. The liquid outlet channel as a whole is a wavy structure. The inner space of the elastic airbag 2 is the liquid outlet channel. The one-way valve 9 is arranged at the upper middle end of the liquid outlet channel, as shown in Figure 40.

[0108] Ninth embodiment: The liquid outlet channel, the one-way valve 9 and the elastic airbag 3 are integrally formed. The lower end of the liquid outlet channel is a wave-shaped structure, which increases the support force for recovery after the elastic airbag 2 is pressed. The upper end of the liquid outlet channel is a straight tube shape, and the one-way valve 9 is arranged at the lower end of the liquid outlet channel, as shown in Figure 41.

[0109] The tenth embodiment: the liquid outlet channel and the liquid outlet nozzle 5 are integrally formed, the liquid outlet channel passes through the elastic airbag 2, and the lower end is connected to the liquid inlet pipe 4, and the one-way valve 9 is arranged at the lower end of the liquid outlet channel, as shown in Figure 42.

[0110] Eleventh embodiment: A second lower liquid outlet channel 21 is integrally formed in the elastic airbag 2, and a second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5. The second lower liquid outlet channel 21 and the second upper liquid outlet channel 22 are spliced ​​to form the liquid outlet channel, and the one-way valve 9 is provided at the lower end of the second upper liquid outlet channel 22, as shown in Figure 43.

[0111] The twelfth embodiment: A second lower liquid outlet channel 21 is integrally formed in the elastic airbag 2, and a second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5. The second lower liquid outlet channel 21 and the second upper liquid outlet channel 22 are spliced ​​together to form the liquid outlet channel, and the one-way valve 9 is integrally formed with the elastic airbag 2 and is provided in the middle section of the second lower liquid outlet channel 21, as shown in Figure 44.

[0112] Thirteenth embodiment: A second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5, the liquid inlet pipe 4 passes through the elastic airbag 2 and is connected to the lower end of the second upper liquid outlet channel 22, and the one-way valve 9 is provided at the upper end of the liquid inlet pipe 4, as shown in Figure 45.

[0113] Fourteenth embodiment: A second lower liquid outlet channel 21 is integrally formed in the elastic airbag 2, and a second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5. The second lower liquid outlet channel 21 and the second upper liquid outlet channel 22 are spliced ​​together to form the liquid outlet channel. The one-way valve 9 is integrally formed with the elastic airbag 2 and is provided at the upper end of the second lower liquid outlet channel 21. An insert portion is provided in the pump chamber 16 corresponding to the second lower liquid outlet channel 21, and the lower end of the second lower liquid outlet channel 21 is sealed on the insert portion, as shown in Figure 46.

[0114] Fifteenth embodiment: A second lower liquid outlet channel 21 is integrally formed in the elastic airbag 2, and a second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5. The second lower liquid outlet channel 21 and the second upper liquid outlet channel 22 are spliced ​​together to form the liquid outlet channel, and the lower end of the second lower liquid outlet channel 21 extends out of the pump chamber 16, and the upper end of the liquid inlet pipe 4 is connected to the lower end of the second lower liquid outlet channel 21, and the one-way valve 9 is provided at the lower end of the liquid inlet pipe 4, as shown in Figure 47.

[0115] Sixteenth embodiment: A second lower liquid outlet channel 21 is integrally formed in the elastic airbag 2, and a second upper liquid outlet channel 22 is provided on the liquid outlet nozzle 5. The second lower liquid outlet channel 21 and the second upper liquid outlet channel 22 are spliced ​​together to form the liquid outlet channel, and the liquid inlet pipe 4 and the second lower liquid outlet channel 21 are integrally formed, and the one-way valve 9 is provided at the lower end of the liquid inlet pipe 4, as shown in Figure 48.

[0116] In the first, sixth, seventh, eighth, ninth and twelfth embodiments, the one-way valve 9 is integrally formed with the elastic airbag 2. The one-way valve 9 includes a conical structure, and a normally closed through hole is provided at the apex of the cone. When liquid flows, it flows along the inside of the cone, expanding the through hole to form a passage. When no liquid flows, the through hole is closed again. At this time, the liquid cannot move from the apex of the cone to the bottom, that is, it cannot flow back, thereby achieving a one-way conduction effect.

[0117] In the second, third, tenth and eleventh embodiments, the one-way valve 9 includes a sleeve portion for setting, a conical structure is provided in the sleeve portion, and a normally closed through hole is provided at the apex of the cone. When liquid flows, it flows along the inside of the cone, expanding the through hole to form a passage. When no liquid flows, the through hole is closed again. At this time, the liquid cannot move from the apex of the cone to the bottom, that is, it cannot flow back, thereby achieving a one-way conduction effect.

[0118] In the fourth embodiment, the one-way valve 9 is a sleeve structure with an upper opening, and a communicating hole is provided on the side wall of the one-way valve 9. The bottom of the first lower liquid outlet channel 19 is provided with a supporting portion 23 connected to the liquid inlet pipe 4, and the bottom surface of the one-way valve 9 is in contact with the top surface of the supporting portion 23. When liquid flows, it enters the first lower liquid outlet channel 19 through the supporting portion 23 and lifts the one-way valve 9 to the highest point, that is, it conflicts with the first upper liquid outlet channel 20. The liquid enters the first upper liquid outlet channel 20 through the communicating hole to realize liquid conduction. When no liquid flows, the one-way valve 9 moves downward until it conflicts with the top surface of the supporting portion 23. The bottom of the one-way valve 9 blocks the communicating channel of the supporting portion 23, so that the liquid cannot flow back into the bottle.

[0119] In the fifth embodiment, the one-way valve 9 is a sleeve structure with an opening on the lower side, and a communicating hole is provided on the one-way valve 9, and the communicating hole is covered with a film, one side of the film is fixedly connected to the one-way valve 9, and an embedded cylinder is provided at the bottom of the first lower liquid outlet channel 19, and the one-way valve 9 is sleeved on the outer side of the embedded cylinder to completely cover the embedded cylinder. When the liquid flows outward, the one-way valve 9 is lifted up to contact the first upper liquid outlet channel 20, and the liquid enters the inside of the one-way valve 9 from the embedded cylinder, and enters the first upper liquid outlet channel 20 through the communicating hole to realize liquid conduction. At this time, the film is flushed open. When there is no liquid circulation, the one-way valve 9 moves downward until the one-way valve 9 is re-sheathed on the outer side of the embedded cylinder, and the film re-covers the communicating hole to prevent the liquid from flowing back into the bottle.

[0120] In addition, the one-way valve of the present application can also use an existing one-way valve structure commonly used in lotion pumps.

[0121] Option 3:

[0122] As shown in Figures 49-58, the present application is a lotion bottle with a soft bag, comprising a bottle body 100, a bottle cap 1 is installed on the bottle mouth of the bottle body 100, the bottle cap 1 is provided with a resettable elastic airbag 2, the elastic airbag 2 is provided with an air replenishing structure 6, the liquid outlet of the elastic airbag 2 is provided with a liquid outlet nozzle 5, the lower end of the elastic airbag 2 is installed with a soft bag 110 located in the bottle body 100, the soft bag 110 is connected to the liquid outlet nozzle 5 through a liquid outlet pipe 3, and the compression and reset function of the elastic airbag replaces the reset function of the metal spring, thereby optimizing the structure of the product and effectively solving the problem that the metal spring is easily rusted due to long-term immersion in the lotion and contaminates the lotion, resulting in a decline in product performance indicators.

[0123] The liquid outlet nozzle 5 can be arranged on the elastic airbag 2 or on the bottle cap 1.

[0124] This product has two ways of discharging liquid. One is to press the elastic airbag, and the air is discharged from the liquid outlet, forming a negative pressure to draw out the liquid in the soft bag. The other is to press the elastic airbag, and the air enters the bottle to squeeze out the liquid in the soft bag.

[0125] Example 1: The air-replenishing structure 6 includes an upper air-replenishing structure 61 located on the top surface of the elastic airbag 2, and a lower air-replenishing structure 62 located at the bottom of the elastic airbag 2. The lower air-replenishing structure 62 communicates with the air barrier between the soft bag 110 and the bottle body 100. The liquid outlet pipe 3 is integrally formed with the liquid outlet nozzle 5, and the lower end of the liquid outlet pipe 3 passes through the bottom of the elastic airbag 2. When the liquid outlet nozzle 5 is pressed, the air in the elastic airbag 2 enters the air barrier between the soft bag 110 and the bottle body 100 through the lower air-replenishing structure 62, squeezing the soft bag 110, thereby discharging the liquid at the upper end of the soft bag 110 through the liquid outlet pipe 3 and out of the liquid outlet nozzle 5. When the liquid outlet nozzle 5 is released, the elastic airbag 2 recovers, forming a negative pressure inside the elastic airbag 2, and external air is replenished into the elastic airbag 2 through the upper air-replenishing structure 61, as shown in FIG50.

[0126] Example 2: The difference from Example 1 lies in the lower liquid outlet tube 32 integrally formed with the elastic airbag 2. The lower end of the upper liquid outlet tube 31 passes through the bottom of the elastic airbag 2 and is inserted into the upper end of the lower liquid outlet tube 32. The liquid outlet nozzle 5 is pressed, and the air in the elastic airbag 2 enters the air barrier between the soft bag 110 and the bottle body 100 through the lower air replenishing structure 62, squeezing the soft bag 110, thereby discharging the liquid at the bottom of the soft bag 110 from the liquid outlet nozzle 5 through the liquid outlet tube 3. When the liquid outlet nozzle 5 is released, the elastic airbag 2 recovers, and negative pressure is formed in the elastic airbag 2. External air is replenished into the elastic airbag 2 through the upper air replenishing structure 61, as shown in Figure 51.

[0127] Embodiment 3: The liquid outlet pipe 3 includes an upper liquid outlet pipe 31 integrally formed with the liquid outlet nozzle 5, and a lower liquid outlet pipe 32 integrally formed with the elastic airbag 2. The lower end of the upper liquid outlet pipe 31 passes through the bottom of the elastic airbag 2 and is inserted into the upper end of the lower liquid outlet pipe 32. An air inlet hole 17 is provided between the bottom of the elastic airbag 2 and the soft bag 110. The air replenishing structure 6 is connected to the air barrier between the soft bag 110 and the bottle body 100. When the liquid outlet nozzle 5 is pressed, the air in the elastic airbag 2 enters the soft bag 110 through the air inlet hole 17, squeezing the soft bag 110. The liquid in the bag 110 is discharged in turn through the lower liquid outlet pipe 32, the upper liquid outlet pipe 31, and the liquid outlet nozzle 5. When the liquid outlet nozzle 5 is released, the elastic airbag 2 is restored, and negative pressure is formed in the elastic airbag 2. The air in the soft bag 110 is replenished into the elastic airbag 2 through the air inlet hole 17, thereby causing the soft bag 110 to shrink, resulting in an increase in the volume of the air barrier between the soft bag 110 and the bottle body 100. External air is replenished into the air barrier between the soft bag 110 and the bottle body 100 through the air replenishing structure 6 until an air pressure balance is reached, as shown in Figure 52.

[0128] Example 4: The connection between the elastic airbag 2 and the liquid outlet nozzle 5 is provided with an upper one-way valve 92 for discharging the air in the elastic airbag 2 to the outside. The bottom of the elastic airbag 2 is provided with a lower one-way valve 91 for discharging the liquid in the soft bag 110 to the elastic airbag 2. The elastic airbag 2 itself acts as a liquid outlet pipe. The air replenishing structure 6 is connected to the air barrier between the soft bag 110 and the bottle body 100. When the liquid outlet nozzle 5 is pressed, the air in the elastic airbag 2 is discharged to the outside through the upper one-way valve 92. , release the liquid outlet nozzle 5, the elastic airbag 2 is restored, and a negative pressure is formed in the elastic airbag 2. The liquid in the soft bag 110 is replenished into the elastic airbag 2 through the lower one-way valve 91. At the same time, the volume of the air barrier between the soft bag 110 and the bottle body 100 increases, forming a negative pressure state. The external air is replenished into the air barrier between the soft bag 110 and the bottle body 100 through the air replenishing structure 6. At this time, liquid is stored in the elastic airbag 2, and the liquid can be discharged by pressing the liquid outlet nozzle 5 again, as shown in Figure 53.

[0129] Example 5: The difference from Example 4 is that the elastic airbag 2 consists of a compression rebound part and an installation connection part located at the bottom of the compression rebound part. In this embodiment, the compression rebound part and the installation connection part are separate structures, as shown in Figure 54.

[0130] Example 6: The difference from Example 5 is that the upper one-way valve 92 and the elastic airbag 2 are separate structures, as shown in Figure 55.

[0131] Embodiments 4 and 5: The upper one-way valve 92 and the elastic airbag 2 are integrally formed, and the lower one-way valve 91 and the mounting connection portion are integrally formed. Embodiment 6: The upper one-way valve 92 and the elastic airbag 2 are separate structures, and the lower one-way valve 91 and the mounting connection portion are integrally formed.

[0132] A lotion bottle with a soft bag includes a repositionable elastic airbag 2, a liquid outlet nozzle 5 is provided at the liquid outlet of the elastic airbag 2, a soft bag 110 is sealed and installed at the lower end of the elastic airbag 2, and the soft bag 110 is connected to the liquid outlet nozzle 5 through a liquid outlet tube 3.

[0133] Example 7: This example only has a soft bag structure and no bottle body structure. An upper one-way valve 92 for discharging the air in the elastic air bag 2 to the outside is provided at the connection between the elastic air bag 2 and the liquid outlet nozzle 5. A lower one-way valve 91 for discharging the liquid in the soft bag 110 to the elastic air bag 2 is provided at the bottom of the elastic air bag 2. The elastic air bag 2 itself acts as a liquid outlet pipe. When the liquid outlet nozzle 5 is pressed, the air in the elastic air bag 2 is discharged to the outside through the upper one-way valve 92. When the liquid outlet nozzle 5 is released, the elastic air bag 2 is restored, and negative pressure is formed in the elastic air bag 2. The liquid in the soft bag 110 is replenished into the elastic air bag 2 through the lower one-way valve 91. At the same time, the external air directly squeezes the soft bag 110. At this time, liquid is stored in the elastic air bag 2. Pressing the liquid outlet nozzle 5 again can discharge the liquid, as shown in Figure 56.

[0134] Example 8: Based on Example 7, the following additions are made: a bottle body 100 for wrapping the soft bag 110 is installed on the outside of the soft bag 110, a bottle cap 1 is installed on the elastic airbag 2, and the bottle cap 1 is installed on the bottle body 100, and a plurality of through-hole structures are provided on the bottle body 100 as an air replenishing structure 6, as shown in Figures 57 and 58.

[0135] In Examples 1-4 and Examples 7 and 8, the compression rebound portion and the installation connection portion are integrally formed; in Examples 5 and 6, the compression rebound portion and the installation connection portion are separate structures.

Claims

1. A springless pump head, comprising a bottle cap (1) for being arranged on a bottle body, characterized in that A resetable elastic airbag (2) is provided on the bottle cap (1), and an air replenishing structure (6) is provided on the elastic airbag (2); an outlet pipe (3) is arranged inside the elastic airbag (2), a liquid inlet pipe (4) is arranged at the lower end of the outlet pipe (3), and a liquid outlet nozzle (5) is arranged at the upper end of the outlet pipe (3). When the elastic airbag (2) is pressed, the air in the bottle is compressed, and the emulsion is discharged through the liquid inlet pipe (4), the outlet pipe (3) and the liquid outlet nozzle (5). When the elastic airbag (2) is released, external air is replenished into the bottle through the air replenishing structure (6).

2. The non-spring pump head according to claim 1, characterized in that A check valve (9) is arranged at the lower end of the outlet pipe (3).

3. The non-spring pump head according to claim 2, characterized in that A first connecting member (7) is arranged in a butt joint manner on the bottom surface of the elastic airbag (2), an "H"-shaped connecting portion (8) is arranged at the center of the first connecting member (7), the upper end of the "H"-shaped connecting portion (8) is connected to the lower end of the outlet pipe (3), and the check valve (9) is arranged inside the upper end of the "H"-shaped connecting portion (8); the lower end of the "H"-shaped connecting portion (8) is connected to the liquid inlet pipe (4), and a first through hole (15) for communicating the outlet pipe (3) and the liquid inlet pipe (4) is arranged on the "H"-shaped connecting portion (8).

4. The non-spring pump head according to claim 3, characterized in that A first conical body protruding upward is arranged on the inner side of the lower end of the outlet pipe (3), a normally closed second through hole is arranged at the vertex of the first conical body, and the first conical body and the second through hole enclose to form the check valve (9).

5. The non-spring pump head according to claim 3, wherein A thin film (10) is pressed between the lower end of the outlet pipe (3) and the upper end of the "H"-shaped connecting portion (8). A plurality of first liquid guiding notches (11) are arranged locally along the circumference at the lower end of the outlet pipe (3). The upper end of the "H"-shaped connecting portion (8), the thin film (10) and the first liquid guiding notches (11) form the check valve (9). When liquid is discharged, the thin film (10) arches at the position of the first liquid guiding notch (11) to communicate the outlet pipe (3) and the liquid inlet pipe (4).

6. The non-spring pump head according to claim 5, characterized in that An inner layer portion (12) is arranged on the inner side of the outlet pipe (3), the lower end of the inner layer portion (12) abuts against the top surface of the thin film (10), and a second liquid guiding notch (13) is arranged on the inner layer portion (12) corresponding to the first liquid guiding notch (11).

7. The non-spring pump head according to claim 6, wherein A central portion (14) is arranged at the center of the inner layer portion (12), and the central portion (14) abuts against the top surface of the thin film (10).

8. A springless pump head, comprising a bottle cap (1) for being arranged on a bottle body, characterized in that A resetable elastic airbag (2) is provided on the bottle cap (1), and an air replenishing structure (6) is provided on the elastic airbag (2); a liquid outlet nozzle (5) is installed on the elastic airbag (2), a liquid outlet pipe (3) is integrally formed on the liquid outlet nozzle (5), a sliding sleeve is arranged at the bottom of the bottle cap (1), the liquid outlet pipe (3) is slidably inserted into the sliding sleeve, and a liquid inlet pipe (4) is arranged at the lower end of the liquid outlet pipe (3).

9. The springless pump head according to claim 8, characterized in that A elastic force strengthening portion is arranged at the center of the elastic airbag (2), and the outlet pipe (3) passes through the elastic force strengthening portion.

10. A springless pump head, comprising a bottle cap (1) for being arranged on a bottle body, characterized in that A pump chamber (16) is provided on the bottle cap (1). An elastic airbag (2) that can be reset is provided in the pump chamber (16). A gas replenishing structure (6) is provided on the elastic airbag (2); a sealing ring is provided on the elastic airbag (2), and the sealing ring abuts against the inner side of the pump chamber (16). A liquid outlet pipe (3) is provided at the bottom of the elastic airbag (2). A liquid inlet pipe (4) communicating with the liquid outlet pipe (3) is installed at the bottom of the pump chamber (16). A liquid outlet nozzle (5) communicating with the liquid outlet pipe (3) is directly or indirectly provided at the top of the pump chamber (16).

11. A springless pump head according to claim 10, characterized in that A number of stretching strips are provided on the elastic airbag (2) to connect the top of the elastic airbag (2) and the sealing ring. When the liquid outlet nozzle (5) is pressed, the stretching strips are stretched. When the liquid outlet nozzle (5) is released, the stretching strips retract and return from the stretched state to the normal state.

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

13. A springless pump head, comprising a bottle cap (1) for being arranged on a bottle body, characterized in that An elastic airbag (2) is installed on the outer side of the top of the bottle cap (1). A gas replenishing structure (6) is provided on the elastic airbag (2). A liquid inlet pipe (4) is installed at the bottom of the elastic airbag (2). A liquid outlet nozzle (5) is installed at the top of the elastic airbag (2). The liquid inlet pipe (4) and the liquid outlet nozzle (5) are communicated through a liquid outlet pipe (3).

14. The non-spring pump head according to claim 13, characterized in that The liquid outlet pipe (3) is the elastic airbag (2) itself. The elastic airbag (2) and the liquid inlet pipe (4) are integrally formed. An upper one-way valve (92) is installed at the connection between the elastic airbag (2) and the liquid outlet nozzle (5), and a lower one-way valve (91) is provided at the connection between the elastic airbag (2) and the liquid inlet pipe (4).

15. The non-spring pump head according to claim 13, characterized in that The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The elastic airbag (2) and the liquid inlet pipe (4) are integrally formed. An air inlet hole (17) is provided at the lower end of the elastic airbag (2) to communicate the inside of the elastic airbag (2) with the space inside the bottle through the air inlet hole (17).

16. A springless pump head according to claim 13, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The elastic airbag (2) and the liquid inlet pipe (4) are integrally formed. The gas replenishing structure (6) includes an upper gas replenishing structure (61) located at the top of the elastic airbag (2) and a lower gas replenishing structure (62) located at the lower end of the elastic airbag (2).

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

18. A springless pump head according to claim 17, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed, pass through the elastic airbag (2), the liquid outlet pipe (3) is inserted into the upper end of the liquid inlet pipe (4), and a one-way valve (9) is provided at the lower end of the liquid inlet pipe (4).

19. A springless pump head according to claim 17, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The liquid outlet pipe (3) passes through the elastic airbag (2). The liquid inlet pipe (4) is integrally formed at the lower end of the elastic airbag (2). An upper one-way valve (92) is provided at the lower end of the liquid outlet pipe (3). A lower one-way valve (91) is provided at the connection between the lower end of the elastic airbag (2) and the liquid inlet pipe (4).

20. A springless pump head according to claim 17, characterized in that The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The liquid inlet pipe (4) is installed at the lower end of the pump chamber (16). An upper one-way valve (92) is provided at the connection between the top of the elastic airbag (2) and the liquid outlet pipe (3). A lower one-way valve (91) is provided 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 integrally formed with the elastic airbag (2).

21. A springless pump head according to claim 17, characterized in that The liquid outlet pipe (3) is the communication space between the elastic airbag (2) and the liquid outlet nozzle (5). The liquid inlet pipe (4) is integrally formed at the bottom of the elastic airbag (2). An upper one-way valve (92) is provided on the liquid outlet nozzle 5. A lower one-way valve (91) is provided at the connection between the bottom of the elastic airbag (2) and the liquid inlet pipe (4). The lower one-way valve (91) is integrally formed with the elastic airbag (2).

22. The diaphragm pump head according to claim 17, wherein The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The liquid inlet pipe (4) is installed at the lower end of the pump chamber (16). An upper one-way valve (92) is provided at the top of the elastic airbag (2). A lower one-way valve (91) is provided at the connection between the bottom of the elastic airbag (2) and the liquid inlet pipe (4). The upper one-way valve (92) is integrally formed with the elastic airbag (2). A quantitative ring (18) that can be adjusted up and down is installed on the outer side of the liquid outlet nozzle (5) by means of a thread.

23. A springless pump head, comprising a bottle cap (1) for being arranged on a bottle body, characterized in that A pump chamber (16) is provided inside the bottle cap (1). A resetable elastic airbag (2) is provided inside the pump chamber (16). A piston part (21) is provided outside the elastic airbag (2). A sealing ring (22) is provided outside the piston part (21). The end of the sealing ring (22) is in sealing contact with the inner side of the pump chamber (16). A liquid inlet pipe (4) is provided at the lower end of the pump chamber (16). A liquid outlet nozzle (5) is provided at the upper end of the pump chamber (16). The liquid inlet pipe (4) and the liquid outlet nozzle (5) are communicated through a liquid outlet channel. When the elastic airbag (2) is pressed, the piston part (21) and the sealing ring (22) compress the air inside the bottle, and the emulsion is discharged through the liquid outlet channel and the liquid outlet nozzle (5). When the elastic airbag (2) is released, the piston part (21) and the sealing ring (22) rebound, creating a negative pressure inside the bottle to suck in external air.

24. The springless pump head according to claim 23, characterized in that A one-way valve (9) is provided inside the liquid outlet channel.

25. The springless pump head according to claim 24, wherein A first lower liquid outlet channel (19) is provided inside the pump chamber (16). A first upper liquid outlet channel (20) is provided on the liquid outlet nozzle (5). The first lower liquid outlet channel (19) and the first upper liquid outlet channel (20) are spliced to form the liquid outlet channel. The one-way valve (9) is provided at the lower end of the first upper liquid outlet channel (20) or at the bottom of the first lower liquid outlet channel (19).

26. The springless pump head according to claim 24, characterized in that The liquid outlet channel, the one-way valve (9) and the elastic airbag (2) are integrally formed.

27. The springless pump head according to claim 24, characterized in that The liquid outlet channel and the liquid outlet nozzle (5) are integrally formed. The one-way valve (9) is provided at the lower end of the liquid outlet channel.

28. The springless pump head according to claim 24, characterized in that A second lower liquid outlet channel (21) is integrally formed inside the elastic airbag (2). A second upper liquid outlet channel (22) is provided on the liquid outlet nozzle (5). The second lower liquid outlet channel (21) and the second upper liquid outlet channel (22) are spliced to form the liquid outlet channel.

29. The springless pump head according to claim 28, wherein The one-way valve (9) is provided at the lower end of the second upper liquid outlet channel (22).

30. The springless pump head according to claim 28, wherein The one-way valve (9) and the elastic airbag (2) are integrally formed.

31. An emulsion bottle with a soft bag, comprising a bottle body (100), and a bottle cap (1) is installed on the bottle mouth of the bottle body (100), characterized in that The bottle cap (1) is provided with a resetable elastic airbag (2). The elastic airbag (2) is provided with an air supplement structure (6). A liquid outlet nozzle (5) is provided at the liquid outlet of the elastic airbag (2). A soft bag (110) located inside the bottle body (100) is installed at the lower end of the elastic airbag (2). The soft bag (110) and the liquid outlet nozzle (5) are communicated through a liquid outlet pipe (3).

32. The emulsion bottle according to claim 31, characterized in that The air supplement structure (6) includes an upper air supplement structure (61) located on the top surface of the elastic airbag (2), and a lower air supplement structure (62) located at the bottom of the elastic airbag (2). The lower air supplement structure (62) is communicated with the air layer between the soft bag (110) and the bottle body (100). The liquid outlet pipe (3) and the liquid outlet nozzle (5) are integrally formed. The lower end of the liquid outlet pipe (3) passes through the bottom of the elastic airbag (2).

33. The emulsion bottle according to claim 32, wherein The liquid outlet pipe (3) includes an upper liquid outlet pipe (31) integrally formed with the liquid outlet nozzle (5), and a lower liquid outlet pipe (32) integrally formed with the elastic airbag (2). The lower end of the upper liquid outlet pipe (31) passes through the bottom of the elastic airbag (2) and is inserted into the upper end of the lower liquid outlet pipe (32).

34. The emulsion bottle according to claim 31, characterized in that The liquid outlet pipe (3) includes an upper liquid outlet pipe (31) integrally formed with the liquid outlet nozzle (5), and a lower liquid outlet pipe (32) integrally formed with the elastic airbag (2). The lower end of the upper liquid outlet pipe (31) passes through the bottom of the elastic airbag (2) and is inserted into the upper end of the lower liquid outlet pipe (32); an air inlet hole (17) is provided between the bottom of the elastic airbag (2) and the soft bag (110), and the air supplement structure (6) is communicated with the air separation layer between the soft bag (110) and the bottle body (100).

35. The emulsion bottle according to claim 31, wherein A upper one-way valve (92) for discharging the air in the elastic airbag (2) to the outside is provided at the connection between the elastic airbag (2) and the liquid outlet nozzle (5), and a lower one-way valve (91) for discharging the liquid in the soft bag (110) to the elastic airbag (2) is provided at the bottom of the elastic airbag (2). The air supplement structure (6) is communicated with the air separation layer between the soft bag (110) and the bottle body (100).

36. An emulsion bottle with a soft bag, characterized in that This emulsion bottle includes a resetable elastic airbag (2). A liquid outlet nozzle (5) is provided at the liquid outlet of the elastic airbag (2). A soft bag (110) is hermetically installed at the lower end of the elastic airbag (2). The soft bag (110) is communicated with the liquid outlet nozzle (5) through a liquid outlet pipe (3).

37. The emulsion bottle according to claim 36, wherein A upper one-way valve (92) for discharging the air in the elastic airbag (2) to the outside is provided at the connection between the elastic airbag (2) and the liquid outlet nozzle (5), and a lower one-way valve (91) for discharging the liquid in the soft bag (110) to the elastic airbag (2) is provided at the bottom of the elastic airbag (2).

38. The emulsion bottle according to claim 36, wherein A bottle body (100) for wrapping the soft bag (110) is installed on the outside of the soft bag (110). A bottle cap (1) is installed on the elastic airbag (2). The bottle cap (1) is installed on the bottle body (100). A plurality of through-hole structures are provided on the bottle body (100) as an air supplement structure (6).

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