Spring-free pump head

Abstract

The utility model discloses a spring-free pump head which comprises a bottle cap used for being 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] The utility model relates to a kind of emulsion pumps, in particular to a kind of springless pump head. BACKGROUND

[0002] Emulsion pump is usually used in daily cleaning and skin care products such as hand washing liquid, shower gel, facial cleanser to pump out emulsion, which is used a lot in daily life. Traditional emulsion pump uses metal spring as the reset component of pump head. It is easy to rust and pollute emulsion when soaked in emulsion for a long time. The structure design is complex and unreasonable, which leads to difficulty in guaranteeing product performance indicators, such as spring rust or inability to pump out liquid due to insufficient spring force. SUMMARY

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

[0004] The utility model solves the technical scheme that the utility model adopts:

[0005] A kind of springless pump head, including bottle cap for being set on bottle body, pump chamber is arranged in the bottle cap, resettable elastic air bag is arranged in the pump chamber, the outside of the elastic air bag is provided with piston part, the outside of the piston part is provided with sealing ring, and the end of the sealing ring is sealed and combined with the inside of the pump chamber;The lower end of the pump chamber is provided with liquid inlet pipe, and the upper end of the pump chamber is provided with liquid outlet nozzle, the liquid inlet pipe is communicated with the liquid outlet nozzle by liquid outlet passage, the elastic air bag is pressed, the piston part and sealing ring compress the air in bottle, and emulsion is discharged through liquid outlet passage and liquid outlet nozzle, the elastic air bag is loosened, the piston part and sealing ring rebound, and external air is sucked into the bottle to form negative pressure.

[0006] One-way valve is arranged in the liquid outlet passage.

[0007] First lower liquid outlet passage is arranged in the pump chamber, first upper liquid outlet passage is arranged on the liquid outlet nozzle, the first lower liquid outlet passage and the first upper liquid outlet passage are spliced to form the liquid outlet passage, and the one-way valve is arranged at the lower end of the first upper liquid outlet passage or at the bottom of the first lower liquid outlet passage.

[0008] The liquid outlet passage, one-way valve and the elastic air bag are integrally formed.

[0009] The liquid outlet passage and the liquid outlet nozzle are integrally formed, and the one-way valve is arranged at the lower end of the liquid outlet passage.

[0010] Second lower liquid outlet passage is integrally formed in the elastic air bag, second upper liquid outlet passage is arranged on the liquid outlet nozzle, and the second lower liquid outlet passage and the second upper liquid outlet passage are spliced to form the liquid outlet passage.

[0011] The one-way valve is arranged at the lower end of the second upper liquid outlet channel.

[0012] The one-way valve is integrally formed with the elastic air bag.

[0013] The utility model discloses a pump chamber is arranged in the bottle cap, resettable elastic air bag is arranged in the pump chamber, the outside of elastic air bag is provided with piston part, the outside of piston part is provided with sealing ring, and the end of sealing ring is sealed with the inboard of pump chamber. The lower end of pump chamber is provided with liquid inlet pipe, and the upper end of pump chamber is provided with liquid outlet nozzle, and liquid inlet pipe and liquid outlet nozzle are communicated through liquid outlet channel, and one-way valve is arranged in liquid outlet channel, the reset action of metal spring is replaced through the compression and recovery function of elastic air bag, the structure of product is optimized, and the problem that metal spring is easy to rust and pollute emulsion and cause product performance index to drop because of long -term soaking in emulsion is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further explained below in combination with the drawings and examples.

[0015] Figure 1 It is one of the structural drawing of the utility model;

[0016] Figure 2 It is the second structural drawing of the utility model;

[0017] Figure 3 It is one of the structural drawing of elastic air bag;

[0018] Figure 4 It is the second structural drawing of elastic air bag;

[0019] Figure 5 It is the cross section schematic drawing of first example;

[0020] Figure 6 It is the cross section schematic drawing of second example;

[0021] Figure 7 It is the cross section schematic drawing of third example;

[0022] Figure 8 It is the cross section schematic drawing of fourth example;

[0023] Figure 9 It is the cross section schematic drawing of fifth example;

[0024] Figure 10 It is the cross section schematic drawing of sixth example;

[0025] Figure 11 It is the cross section schematic drawing of seventh example;

[0026] Figure 12is a cross-sectional schematic view of an eighth embodiment;

[0027] Figure 13 is a cross-sectional schematic view of a ninth embodiment;

[0028] Figure 14 is a cross-sectional schematic view of a tenth embodiment;

[0029] Figure 15 is a cross-sectional schematic view of an eleventh embodiment;

[0030] Figure 16 is a cross-sectional schematic view of a twelfth embodiment;

[0031] Figure 17 is a cross-sectional schematic view of a thirteenth embodiment;

[0032] Figure 18 is a cross-sectional schematic view of a fourteenth embodiment;

[0033] Figure 19 is a cross-sectional schematic view of a fifteenth embodiment;

[0034] Figure 20 is a cross-sectional schematic view of a sixteenth embodiment. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] It is to be understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0037] Some embodiments of the present application provide a kind of described below in conjunction with the accompanying drawings.

[0038] Reference is made to Figures 1 to 20A springless pump head, comprising a bottle cap 1 arranged on a bottle body, a pump chamber 2 arranged in the bottle cap 1, a resettable elastic air bag 3 arranged in the pump chamber 2, a piston part 4 arranged on the outer side of the elastic air bag 3, a sealing ring 5 arranged on the outer side of the piston part 4, and the end of the sealing ring 5 being in sealing abutment with the inner side of the pump chamber 2; a liquid inlet pipe 6 arranged at the lower end of the pump chamber 2, a liquid outlet nozzle 7 arranged at the upper end of the pump chamber 2, the liquid inlet pipe 6 and the liquid outlet nozzle 7 being in communication through a liquid outlet channel, a one-way valve 8 arranged in the liquid outlet channel, the elastic air bag 3, the piston part 4 and the sealing ring 5 being compressed to compress the air in the bottle, the emulsion being discharged through the liquid outlet channel and the liquid outlet nozzle 7, the elastic air bag 3, the piston part 4 and the sealing ring 5 being rebounded to form negative pressure in the bottle to suck in the external air, the compression and recovery functions of the elastic air bag replacing the reset function of the metal spring, optimizing the structure of the product, and effectively solving the problem that the metal spring is prone to rusting and polluting the emulsion after long-term immersion in the emulsion, resulting in a decrease in the performance index of the product.

[0039] A gas supplement hole 13 is arranged at the lower end of the pump chamber 2, and the lower end of the elastic air bag 3 is open, the air in the gas supplement channel and the air in the elastic air bag 3 being pushed into the bottle body from the gas supplement hole 13 by the piston part 4 when the liquid outlet nozzle 7 is pressed, and the external air being sucked into the bottle when the elastic air bag 3 recovers, to realize the gas supplement operation.

[0040] A first lower liquid outlet channel 9 is arranged in the pump chamber 2, and a first upper liquid outlet channel 10 is arranged on the liquid outlet nozzle 7, the first lower liquid outlet channel 9 and the first upper liquid outlet channel 10 being spliced to form the liquid outlet channel.

[0041] First embodiment: the liquid outlet nozzle 7, the elastic air bag 3 and the one-way valve 8 are integrally formed, the one-way valve 8 being arranged at the lower end of the first upper liquid outlet channel 10, as shown in Figure 5 .

[0042] Second embodiment: the liquid outlet nozzle 7 and the elastic air bag 3 are integrally formed, and the one-way valve 8 is arranged at the lower end of the first upper liquid outlet channel 10, as shown in Figure 6 .

[0043] Third embodiment: the liquid outlet nozzle 7, the elastic air bag 3 and the one-way valve 8 are all independent parts, and the one-way valve 8 is arranged at the lower end of the first upper liquid outlet channel 10, as shown in Figure 7 .

[0044] Fourth embodiment: the elastic air bag 3 is located on the top surface of the piston part 4 and extends upwardly to form an integral elastic force increasing part, the elastic force increasing part being sleeved on the outer side of the first upper liquid outlet channel 10, and the one-way valve 8 being arranged at the lower end of the first upper liquid outlet channel 10, as shown inFigure 4 , 8 as shown.

[0045] Fifth embodiment: the elastic air bag 3 is located on the top surface of the piston part 4 and extends upward with an integrated elastic force increasing part, the elastic force increasing part is sleeved on the outside of the first upper liquid outlet channel 10, the one-way valve 8 is arranged at the bottom of the first lower liquid outlet channel 9, as shown in Figure 4 , 9 as shown.

[0046] Sixth embodiment: the liquid outlet channel, one-way valve 8 and the elastic air bag 3 are integrally formed, the elastic air bag 3 is in a whole wave structure, the liquid outlet channel is in a straight pipe shape, the elastic air bag 3 is located on the top surface of the piston part 4 and extends upward with an integrated elastic force increasing part, the one-way valve 8 is arranged at the upper end of the liquid outlet channel, as shown in Figure 4 , 10 as shown.

[0047] Seventh embodiment: the liquid outlet channel, one-way valve 8 and the elastic air bag 3 are integrally formed, the lower end of the liquid outlet channel is in a threaded pipe shape, which improves the support force for the elastic air bag 3 after being pressed, the upper end of the liquid outlet channel is in a straight pipe shape, the one-way valve 8 is arranged at the lower end of the liquid outlet channel, as shown in Figure 11 as shown.

[0048] Eighth embodiment: the liquid outlet channel, one-way valve 8 and the elastic air bag 3 are integrally formed, the liquid outlet channel is in a whole wave structure, the inside space of the elastic air bag 3 is the liquid outlet channel, the one-way valve 8 is arranged at the middle upper end of the liquid outlet channel, as shown in Figure 4 , 12 as shown.

[0049] Ninth embodiment: the liquid outlet channel, one-way valve 8 and the elastic air bag 3 are integrally formed, the lower end of the liquid outlet channel is in a wave structure, which improves the support force for the elastic air bag 3 after being pressed, the upper end of the liquid outlet channel is in a straight pipe shape, the one-way valve 8 is arranged at the lower end of the liquid outlet channel, as shown in Figure 13 as shown.

[0050] Tenth embodiment: the liquid outlet channel and the liquid outlet nozzle 7 are integrally formed, the liquid outlet channel passes through the elastic air bag 3, the lower end is connected with the liquid inlet pipe 6, the one-way valve 8 is arranged at the lower end of the liquid outlet channel, as shown in Figure 14 as shown.

[0051] Eleventh embodiment: the second lower liquid outlet channel 11 is integrally formed in the elastic air bag 3, the second upper liquid outlet channel 12 is arranged 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, and the one-way valve 8 is arranged at the lower end of the second upper liquid outlet channel 12, as shown in Figure 15 .

[0052] Twelfth embodiment: the second lower liquid outlet channel 11 is integrally formed in the elastic air bag 3, the second upper liquid outlet channel 12 is arranged 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, and the one-way valve 8 is integrally formed with the elastic air bag 3 and arranged at the middle section of the second lower liquid outlet channel 11, as shown in Figure 16 .

[0053] Thirteenth embodiment: the second upper liquid outlet channel 12 is arranged on the liquid outlet nozzle 7, the liquid inlet pipe 6 penetrates through the elastic air bag 3 and is connected with the lower end of the second upper liquid outlet channel 12, and the one-way valve 8 is arranged at the upper end of the liquid inlet pipe 6, as shown in Figure 17 .

[0054] Fourteenth embodiment: the second lower liquid outlet channel 11 is integrally formed in the elastic air bag 3, the second upper liquid outlet channel 12 is arranged 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 one-way valve 8 is integrally formed with the elastic air bag 3 and arranged at the upper end of the second lower liquid outlet channel 11, and the pump chamber 2 is provided with a plug-in part corresponding to the second lower liquid outlet channel 11, and the lower end of the second lower liquid outlet channel 11 is sealingly arranged on the plug-in part, as shown in Figure 18 .

[0055] Fifteenth embodiment: the second lower liquid outlet channel 11 is integrally formed in the elastic air bag 3, the second upper liquid outlet channel 12 is arranged 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 with the lower end of the second lower liquid outlet channel 11, and the one-way valve 8 is arranged at the lower end of the liquid inlet pipe 6, as shown in Figure 19 .

[0056] Sixteenth embodiment: the second lower liquid outlet channel 11 is integrally formed in the elastic air bag 3, the second upper liquid outlet channel 12 is arranged 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 liquid inlet pipe 6 is integrally formed with the second lower liquid outlet channel 11, and the one-way valve 8 is arranged at the lower end of the liquid inlet pipe 6, as shown in Figure 20 .

[0057] In the first, sixth, seventh, eighth, ninth and twelfth embodiments, the one-way valve 8 is integrally formed with the elastic air bag 3, and the one-way valve 8 comprises a conical structure, and a normally closed through hole is arranged at the top of the conical structure. When liquid flows, the liquid flows along the inside of the conical structure, and the through hole is opened to form a passage. When there is no liquid flow, the through hole is closed again, and at this time, the liquid cannot flow from the top to the bottom of the conical structure, that is, the liquid cannot flow back, thereby achieving the effect of one-way conduction.

[0058] In the second, third, tenth and eleventh embodiments, the one-way valve 8 comprises a sleeve part for arrangement, and a conical structure is arranged in the sleeve part, and a normally closed through hole is arranged at the top of the conical structure. When liquid flows, the liquid flows along the inside of the conical structure, and the through hole is opened to form a passage. When there is no liquid flow, the through hole is closed again, and at this time, the liquid cannot flow from the top to the bottom of the conical structure, that is, the liquid cannot flow back, thereby achieving the effect of one-way conduction.

[0059] In the fourth embodiment, the one-way valve 8 is a sleeve structure with an upper opening, and a communication hole is arranged on the side wall of the one-way valve 8. The bottom of the first lower liquid outlet channel 9 is provided with a supporting part 14 in communication with the liquid inlet pipe 6. The bottom surface of the one-way valve 8 abuts against the top surface of the supporting part 14. When liquid flows, the liquid enters the first lower liquid outlet channel 9 through the supporting part 14, and lifts the one-way valve 8 upward until the highest point, that is, the one-way valve 8 abuts against the first upper liquid outlet channel 10. The liquid enters the first upper liquid outlet channel 10 through the communication hole, thereby achieving the effect of liquid conduction. When there is no liquid flow, the one-way valve 8 moves downward until the bottom of the one-way valve 8 abuts against the top surface of the supporting part 14, and the communication hole of the supporting part 14 is blocked by the bottom of the one-way valve 8, so that the liquid cannot flow back into the bottle.

[0060] In the fifth embodiment, the one-way valve 8 is a sleeve structure with a lower opening. A communication hole is arranged on the one-way valve 8, and a film is arranged on the communication hole. One side of the film is fixedly connected with the one-way valve 8. The bottom of the first lower liquid outlet channel 9 is provided with an embedding cylinder. The one-way valve 8 is arranged outside the embedding cylinder to completely cover the embedding cylinder. When liquid flows outward, the one-way valve 8 is lifted to abut against the first upper liquid outlet channel 10. The liquid enters the inside of the one-way valve 8 from the embedding cylinder, and enters the first upper liquid outlet channel 10 through the communication hole, thereby achieving the effect of liquid conduction. At this time, the film is broken. When there is no liquid flow, the one-way valve 8 moves downward until the one-way valve 8 is arranged outside the embedding cylinder again, and the film covers the communication hole again, so that the liquid cannot flow back into the bottle.

[0061] In addition, the one-way valve of the present application can also use the existing one-way valve structure commonly used in emulsion pumps.

[0062] In the present application, the term "a plurality of" means two or more, unless otherwise expressly specified. The term "and / or" as used herein encompasses all possibilities of combinations of one or more relevant items. The terms "provide", "couple", "connect", "fixed" and the like should be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through intermediate media. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] It should be noted that when an element is referred to as "assembled", "provided", "fixed" or "provided" to another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0064] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and purposes of the present application, and the scope of the present application 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).

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