Bladder pump

Abstract

A bladder pump, comprising a bottle cap configured to be fixed to a bottle body. The bottle cap is provided with a resettable elastic bladder; the elastic bladder is provided with an air supplementing structure and a liquid outlet; a liquid inlet end of the liquid outlet is in communication with a liquid inlet pipe, and a liquid outlet end of the liquid outlet is provided with a liquid outlet nozzle. The product has two liquid outlet modes: one is pressing the elastic bladder to enable air to be discharged from the liquid outlet nozzle to form a negative pressure to draw liquid out of a bottle; and the other is pressing the elastic bladder to enable air to enter the bottle to force liquid out of the bottle; and the position of the liquid outlet nozzle does not change along with the deformation of the elastic bladder, thereby avoiding dripping of lotion due to position deviation of the liquid outlet nozzle, and avoiding unnecessary waste.

Description

A type of airbag pump head Technical Field

[0001] This application relates to an emulsion pump, and more particularly to a bladder-type pump head. Background Technology

[0002] Patent document CN102452524A discloses an airbag-type emulsion pump, including an emulsion pump head and a bottle cap for fixing the emulsion pump. The emulsion pump head has a one-way valve for dispensing liquid. The groove of the emulsion pump head is connected to the upper protrusion of the fixed plastic elastic airbag, and the lower protrusion is connected to the groove of the fixed bottle cap. The bottle cap is provided with an inlet one-way valve and a flat pressure hole. By replacing the pump chamber, piston, return spring, and main column of the traditional emulsion pump with a plastic elastic airbag, the product design is optimized and the structure is simple. However, the supporting force of the emulsion pump head is entirely provided by the side wall of the plastic elastic airbag. In daily use, it is very common to press the emulsion pump head quickly and forcefully to achieve the effect of rapid and multiple dispensing of liquid. For example, when washing a large amount of clothes or dishes at once, the amount of emulsion squeezed out by pressing the emulsion pump head once is not enough, and multiple presses are required. However, rapid pressing will cause the emulsion pump head to deviate (i.e., not straight up and down), causing the position of dispensing liquid to change, resulting in the emulsion falling to the ground and wasting the emulsion.

[0003] Therefore, this application addresses the aforementioned issues. Application content

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide an airbag-type pump head.

[0005] This application is achieved through the following technical solution:

[0006] An airbag-type pump head includes a bottle cap for fixing to a bottle body, the bottle cap being provided with a resettable elastic airbag, the elastic airbag being provided with an air replenishment structure and a liquid outlet, the liquid inlet end of the liquid outlet being connected to an inlet pipe, and the liquid outlet end being provided with a liquid outlet nozzle.

[0007] The dispensing nozzle is integrally formed with the bottle cap.

[0008] The liquid outlet is integrally formed with the elastic airbag.

[0009] A one-way valve is provided at the outlet end of the liquid outlet.

[0010] The one-way valve is integrally formed with the elastic airbag.

[0011] The edge of the outlet is provided with a first cone-shaped part that moves towards the center on the side of the outlet end. The apex of the first cone-shaped part is provided with a normally closed first through hole. The first cone-shaped part and the first through hole-shaped part together form the one-way valve.

[0012] The air replenishment structure on the elastic airbag includes a lower air replenishment structure at the bottom of the elastic airbag and an upper air replenishment structure at the top of the elastic airbag. When the elastic airbag is pressed, air inside the elastic airbag enters the bottle through the lower air replenishment structure. When the elastic airbag is released, the elastic airbag recovers, and external air replenishes the interior of the elastic airbag through the upper air replenishment structure.

[0013] The inlet pipe is located at the bottom of the elastic airbag, and a bottom one-way valve is provided at the connection between the inlet pipe and the elastic airbag. The outlet is located on the side wall of the elastic airbag, and a side one-way valve is provided at the connection between the outlet and the elastic airbag.

[0014] The bottom edge of the elastic airbag is provided with a limiting ring, the top surface of the limiting ring is in contact with the top and bottom surfaces of the bottle cap, and the air replenishment structure and the liquid outlet are provided on the limiting ring.

[0015] Compared with the prior art, this application has the following advantages:

[0016] This application features a resettable elastic airbag on the bottle cap, with an air-filling structure and a liquid outlet. The inlet end of the liquid outlet is connected to an inlet tube, and the outlet end is equipped with a dispensing nozzle. This product has two dispensing methods: one is pressing the elastic airbag, which expels air from the dispensing nozzle, creating negative pressure to draw out the liquid from the bottle; the other is pressing the elastic airbag, which allows air to enter the bottle and squeeze out the liquid. The dispensing nozzle does not change position due to the deformation of the elastic airbag, thus preventing the emulsion from falling due to nozzle displacement and avoiding unnecessary waste. Attached Figure Description

[0017] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 is a structural diagram of this application;

[0019] Figure 2 is a cross-sectional view of the first embodiment;

[0020] Figure 3 is a cross-sectional view of the second embodiment;

[0021] Figure 4 is a structural diagram of the elastic airbag;

[0022] Figure 5 is a cross-sectional view of the third embodiment;

[0023] Figure 6 is a cross-sectional view of the fourth embodiment. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] Referring to Figures 1 to 6, this application discloses an airbag-type pump head, including a bottle cap 1 for fixing to a bottle body. The bottle cap 1 is provided with a resettable elastic airbag 2. The elastic airbag 2 is provided with an air replenishment structure 3 and a liquid outlet 4. The liquid inlet end of the liquid outlet 4 is connected to an inlet pipe 5, and the liquid outlet end of the liquid outlet 4 is provided with a liquid nozzle 6. The liquid nozzle 6 is located at the lower end of the elastic airbag 2. When the elastic airbag 2 is pressed, the liquid nozzle 6 will not change position with the deformation of the elastic airbag 2, thereby avoiding the situation where the liquid nozzle falls due to position displacement, thus avoiding unnecessary waste.

[0026] This product has two dispensing methods: one is to press the elastic air bladder, which expels air from the dispensing nozzle, creating negative pressure to draw out the liquid from the bottle; the other is to press the elastic air bladder, which allows air to enter the bottle and squeeze out the liquid.

[0027] The elastic airbag 2 consists of a pressing part 21 at the upper end, a reset deformation part 22 in the middle, and a fixing part 23 at the lower end. The liquid outlet 6 is disposed on the fixing part 23. When the elastic airbag 2 is pressed or released, the reset deformation part 22 extends and contracts, while the pressing part 21 and the fixing part 23 do not deform. This ensures that when the elastic airbag 2 is pressed, the liquid outlet 6 will not change position due to the deformation of the elastic airbag 2.

[0028] The gas replenishment structure 3 can be set on the elastic airbag 2 or on the bottle cap 1, and the gap between the elastic airbag 2 and the bottle cap 1 can also be used as the gas replenishment structure.

[0029] First embodiment: The dispensing nozzle 6 is integrally formed with the bottle cap 1.

[0030] The second embodiment: the liquid outlet 6 is integrally formed with the elastic airbag 2.

[0031] A one-way valve 7 is provided at the outlet end of the liquid outlet 4.

[0032] The one-way valve 7 is integrally formed with the elastic airbag 2.

[0033] The third embodiment: The air replenishment structure 3 on the elastic airbag 2 includes a lower air replenishment structure 31 located at the bottom of the elastic airbag 2 and an upper air replenishment structure 32 located at the top of the elastic airbag 2. When the elastic airbag 2 is pressed, the air inside the elastic airbag 2 enters the bottle through the lower air replenishment structure 31, causing the liquid in the bottle to pass through the liquid inlet pipe 5, through the one-way valve 7, and into the liquid outlet 6, and finally be discharged from the liquid outlet 6. When the elastic airbag 2 is released, the elastic airbag 2 recovers, and external air replenishes the interior of the elastic airbag 2 through the upper air replenishment structure 32.

[0034] Fourth embodiment: The liquid outlet 4 is located on the side wall of the elastic airbag 2, and the liquid outlet 4 is connected to the liquid outlet 6. The one-way valve 7 of the elastic airbag 2 includes a lower one-way valve 71 located in the elastic airbag 2 and a side one-way valve 72 located at the liquid outlet end of the liquid outlet 4. When the elastic airbag 2 is pressed, the air in the elastic airbag 2 is discharged sequentially through the liquid outlet 4, the side one-way valve 72 and the liquid outlet 6. When the hand is released, the elastic airbag 2 restores the negative pressure and draws out the liquid in the bottle. At the same time, the external air is replenished into the bottle through the air replenishment structure 3. At this time, the elastic airbag 2 stores liquid. Pressing the elastic airbag 2 again will discharge the liquid through the liquid outlet 4, the side one-way valve 72 and the liquid outlet 6.

[0035] The edge of the outlet 4 is provided with a first conical body that moves towards the center on the side of the outlet end. The apex of the first conical body is provided with a normally closed first through hole. The first conical body and the first through hole together form the one-way valve 7. When emulsion passes through, the emulsion opens the first through hole to form a passage. The side wall of the first conical body is squeezed outward by the emulsion. When the pressure inside the bottle and the external pressure are balanced, that is, when no emulsion passes through, the side wall of the first conical body returns to the center and closes the first through hole again.

[0036] The bottom edge of the elastic airbag 2 is provided with a limiting ring 8, the top surface of the limiting ring 8 is in contact with the top and bottom surfaces of the bottle cap 1, and the air replenishment structure 3 and the liquid outlet 4 are provided on the limiting ring 8.

[0037] The top of the bottle cap 1 is provided with a setting hole for the elastic airbag 2 to pass through. The elastic airbag 2 is set in the setting hole. The limiting ring 8 is set at the bottom edge of the fixing part 23. The top surface of the limiting ring 8 is in contact with the bottom edge of the setting hole. When the bottle cap 1 is set on the bottle body, the top of the bottle cap 1 and the bottle mouth will press and fix the limiting ring 8 against each other.

[0038] The gas replenishment structure 3 has a second cone-shaped body on one side of the gas outlet end. The apex of the second cone-shaped body has a normally closed second through hole. When gas is replenished, the air expands the second through hole to form a passage. The side wall of the second cone-shaped body is squeezed outward by the air. When the pressure inside the bottle and the external pressure are balanced, that is, when no air passes through, the side wall of the second cone-shaped body returns to the center and closes the second through hole again.

Claims

1. A bladder-type pump head, comprising a cap (1) for fixing to a bottle body, characterized in that... The bottle cap (1) is provided with a resettable elastic airbag (2), the elastic airbag (2) is provided with an air replenishment structure (3) and a liquid outlet (4), the liquid inlet end of the liquid outlet (4) is connected to an inlet pipe (5), and the liquid outlet end of the liquid outlet (4) is provided with a liquid outlet nozzle (6).

2. The airbag pump head according to claim 1, characterized in that... The dispensing nozzle (6) is integrally formed with the bottle cap (1).

3. The airbag pump head according to claim 1, characterized in that... The liquid outlet (6) is integrally formed with the elastic airbag (2).

4. The airbag pump head according to claim 1, characterized in that... The outlet (4) is equipped with a one-way valve (7) at the outlet end.

5. The airbag pump head according to claim 4, characterized in that... The one-way valve (7) is integrally formed with the elastic airbag (2).

6. The airbag pump head according to claim 4, characterized in that... The edge of the outlet (4) is provided with a first cone-shaped body that moves towards the center on the side of the outlet end. The apex of the first cone-shaped body is provided with a normally closed first through hole. The first cone-shaped body and the first through hole together form the one-way valve (7).

7. The airbag pump head according to claim 1, characterized in that... The air replenishment structure (3) on the elastic airbag (2) includes a lower air replenishment structure (31) located at the bottom of the elastic airbag (2) and an upper air replenishment structure (32) located at the top of the elastic airbag (2). When the elastic airbag (2) is pressed, the air inside the elastic airbag (2) enters the bottle through the lower air replenishment structure (31). When the elastic airbag (2) is released, the elastic airbag (2) recovers, and external air replenishes the interior of the elastic airbag (2) through the upper air replenishment structure (32).

8. The airbag pump head according to claim 1, characterized in that... The inlet pipe (5) is located at the bottom of the elastic airbag (2), and a bottom one-way valve (71) is provided at the connection between the inlet pipe (5) and the elastic airbag (2). The outlet (4) is located on the side wall of the elastic airbag (2), and a side one-way valve (72) is provided at the connection between the outlet (4) and the elastic airbag (2).

9. The airbag pump head according to claim 1, characterized in that... The bottom edge of the elastic airbag (2) is provided with a limiting ring (8), the top surface of the limiting ring (8) is in contact with the top and bottom surfaces of the bottle cap (1), and the air replenishment structure (3) and the liquid outlet (4) are provided on the limiting ring (8).

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