Spring-free pump head

Abstract

The spring-free pump head comprises a bottle cap arranged on a bottle body, a pump chamber is arranged in the bottle cap, an elastic air bag is arranged in the pump chamber, a piston part is arranged on the elastic air bag, a sealing ring is arranged on the piston part, and the end of the sealing ring abuts against the inner side of the pump chamber; a liquid inlet pipe is arranged at the lower end of the pump chamber, a liquid outlet nozzle is arranged at the upper end of the pump chamber, the liquid inlet pipe and the liquid outlet nozzle are communicated through a liquid outlet channel, a one-way valve is arranged in the liquid outlet channel, the elastic air bag is pressed, air in the bottle is compressed, emulsion is discharged through the liquid outlet channel, the elastic air bag is loosened, the elastic air bag is restored, negative pressure is formed in the bottle, and external air is sucked in. The compression and recovery functions of the elastic air bag replace the reset function of a metal spring, the structure of the product is optimized, and the problems that the metal spring is soaked in emulsion for a long time and is prone to rusting, the emulsion is polluted, and the performance index of the product is reduced are effectively solved.

Description

Technical Field

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

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

[0003] To overcome the shortcomings of the prior art, the present invention provides a springless pump head.

[0004] The technical solution adopted by this invention to solve its technical problem is: A springless pump head includes a cap mounted on a bottle body, a pump chamber inside the cap, a resettable elastic airbag inside the pump chamber, a piston portion outside the elastic airbag, and a sealing ring outside the piston portion, the end of the sealing ring sealingly abutting against the inner side of the pump chamber; an inlet pipe is provided at the lower end of the pump chamber, and an outlet nozzle is provided at the upper end of the pump chamber, the inlet pipe and the outlet nozzle being connected by an outlet channel; pressing the elastic airbag compresses the air inside the bottle using the piston portion and the sealing ring, and the emulsion is discharged through the outlet channel and the outlet nozzle; releasing the elastic airbag causes the piston portion and the sealing ring to spring back, creating a negative pressure inside the bottle and drawing in external air.

[0005] A one-way valve is installed in the liquid outlet channel.

[0006] The pump chamber is provided with a first lower liquid outlet channel, and the liquid outlet is provided with a first upper liquid outlet channel. The first lower liquid outlet channel and the first upper liquid outlet channel are spliced ​​together to form the liquid outlet channel. The one-way valve is provided at the lower end of the first upper liquid outlet channel or the one-way valve is provided at the bottom of the first lower liquid outlet channel.

[0007] The liquid outlet channel, the one-way valve, and the elastic airbag are integrally formed.

[0008] The liquid outlet channel and the liquid outlet nozzle are integrally formed, and the one-way valve is located at the lower end of the liquid outlet channel.

[0009] The elastic airbag has a second lower liquid outlet channel integrally formed inside, and the liquid outlet nozzle is provided with a second upper liquid outlet channel. The second lower liquid outlet channel and the second upper liquid outlet channel are spliced ​​together to form the liquid outlet channel.

[0010] The one-way valve is located at the lower end of the second upper liquid outlet channel.

[0011] The one-way valve is integrally formed with the elastic airbag.

[0012] An air supply hole is provided at the lower end of the pump chamber.

[0013] The beneficial effects of this invention are as follows: A pump chamber is provided inside the bottle cap, and a resettable elastic airbag is provided inside the pump chamber. A piston portion is provided on the outside of the elastic airbag, and a sealing ring is provided on the outside of the piston portion. The end of the sealing ring seals against the inside of the pump chamber. An inlet pipe is provided at the lower end of the pump chamber, and an outlet nozzle is provided at the upper end of the pump chamber. The inlet pipe and the outlet nozzle are connected by an outlet channel, and a one-way valve is provided in the outlet channel. By using the compression and recovery function of the elastic airbag, the reset function of the metal spring is replaced, thus optimizing the product structure and effectively solving the problem that metal springs are prone to rusting and contaminating the emulsion due to prolonged immersion in the emulsion, leading to a decline in product performance indicators. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is one of the structural diagrams of the present invention; Figure 2 This is the second structural diagram of the present invention; Figure 3 This is one of the structural diagrams of an elastic airbag; Figure 4 This is the second structural diagram of an elastic airbag; Figure 5 This is a cross-sectional schematic diagram of the first embodiment; Figure 6 This is a cross-sectional schematic diagram of the second embodiment; Figure 7 This is a cross-sectional schematic diagram of the third embodiment; Figure 8 This is a cross-sectional schematic diagram of the fourth embodiment; Figure 9 This is a cross-sectional schematic diagram of the fifth embodiment; Figure 10 This is a cross-sectional schematic diagram of the sixth embodiment; Figure 11 This is a cross-sectional schematic diagram of the seventh embodiment; Figure 12 This is a cross-sectional schematic diagram of the eighth embodiment; Figure 13 This is a cross-sectional schematic diagram of the ninth embodiment; Figure 14 This is a cross-sectional schematic diagram of the tenth embodiment; Figure 15This is a cross-sectional schematic diagram of the eleventh embodiment; Figure 16 This is a cross-sectional schematic diagram of the twelfth embodiment; Figure 17 This is a cross-sectional schematic diagram of the thirteenth embodiment; Figure 18 This is a cross-sectional schematic diagram of the fourteenth embodiment; Figure 19 This is a cross-sectional schematic diagram of the fifteenth embodiment; Figure 20 This is a cross-sectional schematic diagram of the sixteenth embodiment. Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0017] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0018] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0019] Reference Figures 1 to 20 A springless pump head includes a bottle cap 1 for mounting on a bottle body, a pump chamber 2 disposed within the bottle cap 1, a resettable elastic airbag 3 disposed within the pump chamber 2, a piston portion 4 disposed on the outer side of the elastic airbag 3, and a sealing ring 5 disposed on the outer side of the piston portion 4, the end of the sealing ring 5 sealingly abutting against the inner side of the pump chamber 2; an inlet pipe 6 disposed at the lower end of the pump chamber 2, and an outlet nozzle 7 disposed at the upper end of the pump chamber 2, the inlet pipe 6 and the outlet nozzle 7 being connected by an outlet channel, the outlet channel containing... Equipped with a one-way valve 8, pressing the elastic airbag 3 compresses the air inside the bottle via the piston 4 and sealing ring 5, allowing the emulsion to be discharged through the outlet channel and outlet nozzle 7. Releasing the elastic airbag 3 causes the piston 4 and sealing ring 5 to spring back, creating a negative pressure inside the bottle and drawing in external air. The compression and recovery function of the elastic airbag replaces the reset function of the metal spring, optimizing the product structure and effectively solving the problem that metal springs are prone to rusting and contaminating the emulsion when immersed in emulsion for a long time, leading to a decline in product performance indicators.

[0020] The lower end of the pump chamber 2 is provided with an air replenishment hole 13, and the lower end of the elastic airbag 3 is open. When the liquid outlet 7 is pressed, the piston part 4 pushes the air in the air replenishment channel and the air in the elastic airbag 3 into the bottle body through the air replenishment hole 13. When the elastic airbag 3 returns to its original state, a negative pressure is formed inside the bottle, drawing in external air to achieve the air replenishment operation.

[0021] The pump chamber 2 is provided with a first lower liquid outlet channel 9, and the liquid outlet 7 is provided with a first upper liquid outlet channel 10. The first lower liquid outlet channel 9 and the first upper liquid outlet channel 10 are spliced ​​together to form the liquid outlet channel.

[0022] First embodiment: The liquid outlet 7, the elastic airbag 3, and the one-way valve 8 are integrally formed, and the one-way valve 8 is located at the lower end of the first upper liquid outlet channel 10, such as... Figure 5 As shown.

[0023] Second embodiment: The liquid outlet 7 is integrally formed with the elastic airbag 3, and the one-way valve 8 is located at the lower end of the first upper liquid outlet channel 10, such as... Figure 6 As shown.

[0024] Third embodiment: The liquid outlet 7, the elastic airbag 3, and the one-way valve 8 are all independent parts. The one-way valve 8 is located at the lower end of the first upper liquid outlet channel 10, such as... Figure 7 As shown.

[0025] Fourth embodiment: The elastic airbag 3 has an integrally formed elastic force increasing part extending upward from the top surface of the piston part 4. The elastic force increasing part is fitted onto the outside of the first upper liquid outlet channel 10. The one-way valve 8 is located at the lower end of the first upper liquid outlet channel 10, such as... Figure 4 , 8 As shown.

[0026] Fifth embodiment: The elastic airbag 3 has an integrally formed elastic force-enhancing part extending upward from the top surface of the piston part 4. The elastic force-enhancing part is fitted onto the outside of the first upper liquid outlet channel 10. The one-way valve 8 is located at the bottom of the first lower liquid outlet channel 9, such as... Figure 4 , 9 As shown.

[0027] Sixth embodiment: The liquid outlet channel, one-way valve 8, and elastic airbag 3 are integrally formed. The elastic airbag 3 has a wavy structure, the liquid outlet channel is a straight tube, and the elastic airbag 3 has an integrally formed elastic force-increasing part extending upward from the top surface of the piston part 4. The one-way valve 8 is located at the upper end of the liquid outlet channel, such as... Figure 4 , 10 As shown.

[0028] Seventh embodiment: The liquid outlet channel, one-way valve 8, and elastic airbag 3 are integrally formed. The lower end of the liquid outlet channel is a threaded tube, providing support for the elastic airbag 3 to improve its recovery after being pressed. The upper end of the liquid outlet channel is a straight tube. The one-way valve 8 is located at the lower end of the liquid outlet channel. Figure 11 As shown.

[0029] Eighth embodiment: The liquid outlet channel, one-way valve 8, and elastic airbag 3 are integrally formed. The liquid outlet channel has a wavy structure, and the inner space of the elastic airbag 3 is the liquid outlet channel. The one-way valve 8 is located at the upper middle end of the liquid outlet channel. Figure 4 , 12 As shown.

[0030] Ninth embodiment: The liquid outlet channel, one-way valve 8, and elastic airbag 3 are integrally formed. The lower end of the liquid outlet channel has a wavy structure to provide support for the elastic airbag 3 to recover after being pressed. The upper end of the liquid outlet channel is a straight tube. The one-way valve 8 is located at the lower end of the liquid outlet channel. Figure 13 As shown.

[0031] Tenth embodiment: The liquid outlet channel is integrally formed with the liquid outlet nozzle 7. The liquid outlet channel passes through the elastic airbag 3, and its lower end is connected to the liquid inlet pipe 6. The one-way valve 8 is located at the lower end of the liquid outlet channel, such as... Figure 14 As shown.

[0032] Eleventh embodiment: The elastic airbag 3 has a second lower liquid outlet channel 11 integrally formed inside, and the liquid outlet 7 is provided with a second upper liquid outlet channel 12. The second lower liquid outlet channel 11 and the second upper liquid outlet channel 12 are spliced ​​together to form the liquid outlet channel. The one-way valve 8 is located at the lower end of the second upper liquid outlet channel 12, such as... Figure 15 As shown.

[0033] Twelfth embodiment: A second lower liquid outlet channel 11 is integrally formed inside the elastic airbag 3, and a second upper liquid outlet channel 12 is provided on the liquid outlet nozzle 7. The second lower liquid outlet channel 11 and the second upper liquid outlet channel 12 are spliced ​​together to form the liquid outlet channel. The one-way valve 8 is integrally formed with the elastic airbag 3 and is located in the middle section of the second lower liquid outlet channel 11. Figure 16 As shown.

[0034] Thirteenth embodiment: The liquid outlet 7 is provided with a second upper liquid outlet channel 12, the liquid inlet pipe 6 passes through the elastic air bag 3 and is connected to the lower end of the second upper liquid outlet channel 12, and the one-way valve 8 is provided at the upper end of the liquid inlet pipe 6, such as... Figure 17 As shown.

[0035] Fourteenth Embodiment: A second lower liquid outlet channel 11 is integrally formed inside the elastic airbag 3, and a second upper liquid outlet channel 12 is provided on the liquid outlet nozzle 7. The second lower liquid outlet channel 11 and the second upper liquid outlet channel 12 are spliced ​​together to form the liquid outlet channel. The one-way valve 8 is integrally formed with the elastic airbag 3 and is provided at the upper end of the second lower liquid outlet channel 11. An insert portion is provided in the pump chamber 2 corresponding to the second lower liquid outlet channel 11. The lower end of the second lower liquid outlet channel 11 is sealed on the insert portion. Figure 18 As shown.

[0036] Fifteenth Embodiment: A second lower liquid outlet channel 11 is integrally formed inside the elastic airbag 3, and a second upper liquid outlet channel 12 is provided on the liquid outlet nozzle 7. The second lower liquid outlet channel 11 and the second upper liquid outlet channel 12 are spliced ​​to form the liquid outlet channel. The lower end of the second lower liquid outlet channel 11 extends out of the pump chamber 2. The upper end of the liquid inlet pipe 6 is connected to the lower end of the second lower liquid outlet channel 11. The one-way valve 8 is provided at the lower end of the liquid inlet pipe 6. Figure 19 As shown.

[0037] Sixteenth embodiment: A second lower liquid outlet channel 11 is integrally formed inside the elastic airbag 3, and a second upper liquid outlet channel 12 is provided on the liquid outlet nozzle 7. The second lower liquid outlet channel 11 and the second upper liquid outlet channel 12 are spliced ​​together to form the liquid outlet channel. The liquid inlet pipe 6 is integrally formed with the second lower liquid outlet channel 11, and the one-way valve 8 is located at the lower end of the liquid inlet pipe 6, such as... Figure 20 As shown.

[0038] In embodiments 1, 6, 7, 8, 9, and 12, the one-way valve 8 is integrally formed with the elastic airbag 3. The one-way valve 8 includes a conical structure with a normally closed through hole at the apex of the conical body. When liquid flows, it flows along the inside of the conical body, opening the through hole to form a passage. When no liquid flows, the through hole closes again. At this time, the liquid cannot move from the apex of the conical body to the bottom, i.e., it cannot flow back, thus achieving the effect of one-way conduction.

[0039] In the second, third, tenth, and eleventh embodiments, the one-way valve 8 includes a sleeve portion for setting, and a conical structure is provided inside the sleeve portion. A normally closed through hole is provided at the apex of the conical body. When liquid flows, it flows along the inside of the conical body, opening the through hole to form a passage. When no liquid flows, the through hole closes again. At this time, the liquid cannot move from the apex of the conical body to the bottom, that is, it cannot flow back, thus achieving the effect of one-way conduction.

[0040] In the fourth embodiment, the one-way valve 8 is a sleeve structure with an opening on the upper side. The side wall of the one-way valve 8 is provided with a connecting hole. The bottom of the first lower liquid outlet channel 9 is provided with a support part 14 that communicates with the liquid inlet pipe 6. The bottom surface of the one-way valve 8 abuts against the top surface of the support part 14. When there is liquid flow, it enters the first lower liquid outlet channel 9 through the support part 14 and lifts the one-way valve 8 until it reaches its highest point, that is, it abuts against the first upper liquid outlet channel 10. The liquid enters the first upper liquid outlet channel 10 through the connecting hole, realizing liquid conduction. When there is no liquid flow, the one-way valve 8 moves downward until it abuts against the top surface of the support part 14. The bottom of the one-way valve 8 blocks the connecting channel of the support part 14, so that the liquid cannot flow back into the bottle.

[0041] In the fifth embodiment, the one-way valve 8 is a sleeve structure with an opening at the bottom. The one-way valve 8 is provided with a connecting hole, and a thin film is covered on the connecting hole. One side of the thin film is fixedly connected to the one-way valve 8. An insert is provided at the bottom of the first lower liquid outlet channel 9. The one-way valve 8 is fitted on the outside of the insert, completely covering the insert. When the liquid flows outward, the one-way valve 8 is pushed up to contact the first upper liquid outlet channel 10. The liquid enters the interior of the one-way valve 8 from the insert and enters the first upper liquid outlet channel 10 through the connecting hole, realizing liquid conduction. At this time, the thin film is opened. When there is no liquid flow, the one-way valve 8 moves downward until the one-way valve 8 is refitted on the outside of the insert. The thin film covers the connecting hole again, preventing the liquid from flowing back into the bottle.

[0042] In addition, the check valve of this application can also use existing check valve structures commonly used in emulsion pumps.

[0043] In this invention, the term "a plurality of" refers to two or more unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "set," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It should be noted that when a component is referred to as being "assembled on," "set on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A springless pump head, comprising a cap (1) for mounting on a bottle, characterized in that... The bottle cap (1) is provided with a pump chamber (2), and the pump chamber (2) is provided with a resettable elastic airbag (3). A piston part (4) is provided on the outside of the elastic airbag (3), and a sealing ring (5) is provided on the outside of the piston part (4). The end of the sealing ring (5) is sealed and abutted against the inside of the pump chamber (2). The lower end of the pump chamber (2) is provided with a liquid inlet pipe (6), and the upper end of the pump chamber (2) is provided with a liquid outlet (7). The liquid inlet pipe (6) and the liquid outlet (7) are connected through a liquid outlet channel. When the elastic airbag (3) is pressed, the piston part (4) and the sealing ring (5) compress the air in the bottle, and the emulsion is discharged through the liquid outlet channel and the liquid outlet (7). When the elastic airbag (3) is released, the piston part (4) and the sealing ring (5) rebound, so that a negative pressure is formed in the bottle, and external air is drawn in.

2. The springless pump head according to claim 1, characterized in that... A one-way valve (8) is installed in the liquid outlet channel.

3. The springless pump head according to claim 2, characterized in that... The pump chamber (2) is provided with a first lower liquid outlet channel (9), and the liquid outlet (7) is provided with a first upper liquid outlet channel (10). The first lower liquid outlet channel (9) and the first upper liquid outlet channel (10) are spliced ​​together to form the liquid outlet channel. The one-way valve (8) is provided at the lower end of the first upper liquid outlet channel (10) or the one-way valve (8) is provided at the bottom of the first lower liquid outlet channel (9).

4. The springless pump head according to claim 2, characterized in that... The liquid outlet channel, the one-way valve (8), and the elastic airbag (3) are integrally formed.

5. The springless pump head according to claim 2, characterized in that... The liquid outlet channel and the liquid outlet nozzle (7) are integrally formed, and the one-way valve (8) is located at the lower end of the liquid outlet channel.

6. The springless pump head according to claim 2, characterized in that... The elastic airbag (3) has an integrally formed second lower liquid outlet channel (11), and the liquid outlet (7) has a second upper liquid outlet channel (12). The second lower liquid outlet channel (11) and the second upper liquid outlet channel (12) are spliced ​​together to form the liquid outlet channel.

7. The springless pump head according to claim 6, characterized in that... The one-way valve (8) is located at the lower end of the second upper liquid outlet channel (12).

8. The springless pump head according to claim 6, characterized in that... The one-way valve (8) is integrally formed with the elastic airbag (3).

9. The springless pump head according to claim 1, characterized in that... An air inlet (13) is provided at the lower end of the pump chamber (2).

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