WO2023087457A1

WO2023087457A1 - Gas-assisted nozzle

Info

Publication number: WO2023087457A1
Application number: PCT/CN2021/138208
Authority: WO
Inventors: 桂仁东
Original assignee: 浙江晟祺实业有限公司
Priority date: 2021-11-19
Filing date: 2021-12-15
Publication date: 2023-05-25
Also published as: CN113911543A

Abstract

A gas-assisted nozzle, comprising a pump core assembly (1), a head cap (2), a liquid guide sleeve (3), and a gas-assisted elastic assembly (4). The pump core assembly has a bottom provided with a liquid inlet (101), and a top provided with a liquid outlet (102); the head cap can be provided on the pump core assembly in an up-down moving manner and comprises a liquid outlet channel (21) communicated with the liquid outlet; the lower end of the liquid guide sleeve is connected to a liquid outlet component of the pump core assembly and can move up and down along with the liquid outlet component; the head cap is connected to the upper end of the liquid guide sleeve; the gas-assisted elastic assembly is provided on the periphery of the liquid guide sleeve in a sleeving manner and enables the head cap to always keep an upward moving trend. According to the gas-assisted nozzle, a mounting space is reserved between the pump core assembly and the head cap by connecting the liquid guide sleeve, and the gas-assisted elastic assembly is provided in this position to replace existing metal springs and plastic springs; the head cap is driven to reset by means of pressure stored when gas is compressed, so that assembling and recycling are facilitated; furthermore, material loss does not exist in the using process, and even if the gas-assisted nozzle is used for a long time, good reset stability can be ensured.

Description

A gas-assisted nozzle

technical field

The invention relates to a gas-assisted spray head.

Background technique

In the prior art, lotion (or spray) pumps are widely used in cosmetics and bath products. When needed, the required liquid can be taken out by pressing the head. This method is convenient and hygienic.

The pump core is the main part of the lotion pump. The existing pump core structure generally includes a pump body, a piston seat, a piston, a piston rod, a connecting seat, a spring and a suction piece. The piston seat and the piston are installed inside the pump body. The lower end of the piston rod extends into the pump body and cooperates with the piston seat and the piston. The upper end of the piston rod protrudes upwards from the pump body. The spring is set outside the pump body and sleeved on the piston rod to give the piston rod reset elasticity. .

Common springs are generally made of metal materials, and the overall structure is relatively thin. After a long period of use, it is easy to have the problem of piston reset lag, and the support force given by the metal spring to the piston rod is not stable enough, which affects the stability of the piston rod moving up and down. The problem of shaking when the piston rod moves up and down affects the experience of consumers. In addition, for the pump core structure using metal springs, it is very troublesome to disassemble and sort the metal springs from other plastic parts for recycling.

In order to solve the above problems, the applicant's prior patent ZL 201921206736.9 "A Thermoplastic Spring and Pump Core Structure Using the Spring" provides a plastic spring that can be used in pumps. Although this structure solves the problem of poor stability and inconvenient recycling of the metal spring, the assembly distance between it and other parts of the pump will affect the elasticity, making assembly difficult.

Contents of the invention

The technical problem to be solved by the present invention is to provide a gas-assisted sprinkler head with good reset stability, easy recycling and easy assembly in view of the current state of the art.

The technical solution adopted by the present invention to solve the problems of the technologies described above is:

A gas-assisted spray head, including a pump core assembly and a head cap, the bottom of the pump core assembly is provided with a liquid inlet, and the top is provided with a liquid outlet, and the head cap is arranged on the pump core assembly so that it can move up and down And it includes a liquid outlet channel connected with the liquid outlet, and also includes a liquid guide sleeve and an air-assisted elastic component. The lower end of the liquid guide sleeve is connected with the liquid outlet part of the pump core assembly and can move up and down with the liquid outlet part. , the head cap is connected to the upper end of the liquid guide sleeve and the liquid outlet channel communicates with the inner cavity of the liquid guide sleeve, and the gas-assisted elastic component is sleeved on the outer periphery of the liquid guide sleeve and keeps the head cap always moving upward.

Preferably, the gas-assisted elastic assembly includes an air-collecting sleeve and a first piston, the air-collecting sleeve includes an air-collecting chamber extending vertically close to the liquid guide sleeve, the air-collecting chamber has an open top, and the first The piston is set in the top opening of the gas collection chamber to seal the quantitative gas in the gas collection chamber. The lower end of the head cap is partly against the first piston. When the head cap is pressed down, the first piston is driven downward. Move and squeeze the air in the air collection chamber, and when the head cap is loosened, the compressed air in the air collection chamber will drive the first piston and the head cap to reset upward. With the above structure, when the head cap is pressed, the quantitative air in the air collection chamber is compressed to form air with higher pressure, and when the head cap is loosened, the compressed air will push the first piston upward to drive the head cap to reset upwards Compared with the existing metal elastic parts and plastic elastic parts, the air-assisted elastic component formed in this way does not have a main compression area during the pressing and reset process, and does not need to rely on the elastic force of the compressed area for recovery during the reset process, and There is no material loss over time, so it has better reset stability and achieves a quiet effect.

Preferably, the air collecting sleeve includes an inner sleeve and an outer sleeve which are spaced inside and outside, the inner sleeve is sleeved on the outer periphery of the liquid guide sleeve, the outer sleeve is closed and connected to the lower end of the inner sleeve, The air-collecting chamber is formed between the outer casing and the inner casing, and the air-collecting chamber is annular. The above-mentioned structure is easy to assemble, and after assembly, the connection between the liquid guide sleeve, the air collection sleeve, the head cap and the pump core assembly is compact, and the reliability is good; the annular air collection chamber can store more air and improve the reset effect.

In order to improve the stability of cooperation between the head cap and the air-assisted elastic component, the liquid outlet channel is located at the center of the head cap and extends longitudinally, and the head cap is provided with guide sleeves arranged at intervals on the periphery of the liquid outlet channel. The lower end of the channel is connected with the upper end of the liquid guide sleeve, and the guide sleeve is inserted in the top opening of the gas collection chamber and abuts against the first piston.

Preferably, an inflation port is opened on the outer peripheral wall of the air collection sleeve, and an inflation nozzle for inflating the air collection cavity is provided at the inflation opening, and the inflation nozzle is preferably a valve. The gas collection chamber of the present invention generally does not have gas loss, and the above-mentioned gas charging nozzle is provided, and when there is gas loss in the gas collection chamber due to external reasons, the gas can be replenished manually.

The spray head of the present invention also includes a coil, which is connected to the top of the air collecting sleeve and sleeved on the outer periphery of the head cap. The screw coil is convenient to connect with the bottle body.

In the present invention, the pump core assembly includes a pump body, a piston seat and a second piston. The pump body has a hollow pump chamber, the liquid inlet is located at the bottom of the pump chamber, and the piston seat can be moved up and down. It is movably arranged in the pump chamber and the upper port constitutes a liquid outlet, the upper end of the piston seat is connected with the lower end of the liquid guide sleeve, and the second piston is arranged in the pump body so that it can move up and down and is sleeved in the pump body between the wall and the outer wall of the piston seat.

In the above solution, the lower end of the piston seat has a flange extending outward, and the second piston includes a first piston plate arranged close to the inner wall of the pump and a second piston plate sleeved on the outer periphery of the piston seat, so The lower end of the second piston plate abuts against the upper wall surface of the supporting edge, the lower end of the piston seat is a blind end, the upper part has a first channel extending longitudinally, and the lower part has a second channel penetrating transversely and communicating with the first channel.

Preferably, the lower end of the liquid guide sleeve is provided with a matching sleeve extending downward and expanding outward, and the matching sleeve surrounds the upper part of the second piston plate. This structure is beneficial to reduce the pressure loss in the pump body and improve the pumping effect.

In order to facilitate assembly, the pump body has an upper port, the lower end of the air collecting sleeve closes the upper port, and the lower end of the air collecting sleeve forms a slot capable of mating with the upper edge of the pump body.

Compared with the prior art, the present invention has the advantage that: the present invention reserves an installation space between the pump core assembly and the head cap by connecting the fluid guide sleeve, and arranges an air-assisted elastic assembly here to replace the existing Metal springs and plastic springs use the pressure stored when the gas is compressed to drive the head cap to reset, which is not only easy to assemble and recycle, but also has no material loss during use, and can ensure good durability even if it is used for a long time Reset stability.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the sectional view of the embodiment of the present invention;

Fig. 3 is an exploded view of an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 3, the air-assisted spray head of this embodiment includes a pump core assembly 1, a head cap 2, a liquid guide sleeve 3 and an air-assisted elastic assembly 4. The bottom of the pump core assembly 1 is provided with a liquid inlet 101, A liquid outlet 102 is arranged on the top, and the head cap 2 is arranged on the pump core assembly 1 so as to be able to move up and down and includes a liquid outlet channel 21 communicating with the liquid outlet 102 . The lower end of the liquid guide sleeve 3 is connected to the liquid outlet part of the pump core assembly 1 and can move up and down with the liquid outlet part, the head cap 2 is connected to the upper end of the liquid guide sleeve 3 and the liquid outlet channel 21 communicates with the inner cavity of the liquid guide sleeve 3 , the air-assisted elastic component 4 is sleeved on the outer periphery of the liquid guide sleeve 3 and keeps the head cap 2 always moving upward.

In this embodiment, the air-assisted elastic assembly 4 includes an air collection sleeve 41 and a first piston 42. The air collection sleeve 41 includes an air collection chamber 40 extending vertically close to the liquid guide sleeve 3. The air collection chamber 40 has an open top. The first piston 42 is arranged in the top opening of the gas collection chamber 40 so as to seal a certain amount of gas in the gas collection chamber 40 . Part of the lower end of the head cap 2 is against the first piston 42 . When the head cap 2 is pressed down, the first piston 42 is driven to move down and squeeze the air in the air collection chamber 40; when the head cap 2 is released, the compressed air in the air collection chamber 40 drives the first piston 42 and headgear 2 reset upwards. When the head cap is pressed, the quantitative air in the air collection chamber 40 is compressed to form air with a higher pressure. When the head cap 2 is released, the compressed air will push the first piston 42 upwards to drive the head cap 2 to reset upwards. Compared with the existing metal elastic parts and plastic elastic parts, the gas-assisted elastic assembly 4 formed in this way does not have a main compression area during the pressing and reset process, and does not need to rely on the elastic force of the compressed area for recovery during the reset process. And there is no material loss with the prolongation of use time, so it has better reset stability and achieves a quiet effect.

The above-mentioned gas collection sleeve 41 includes an inner sleeve body 411 and an outer sleeve body 412 which are nested at intervals inside and outside. The inner sleeve body 411 is sleeved on the outer periphery of the liquid guide sleeve 3. The above-mentioned gas collection chamber 40 is formed between the body 412 and the inner sleeve body 411, and the gas collection chamber 40 is annular. The above-mentioned structure is easy to assemble, and the connection between the liquid guide sleeve 3, the air collection sleeve 41, the head cap 2, and the pump core assembly 1 after assembly is compact, and the reliability is good; the annular air collection chamber 40 can store more air and improve the recovery time. Effect.

The above liquid outlet channel 21 is located at the central part of the head cap 2 and extends longitudinally. The head cap 2 is provided with guide sleeves 22 arranged at intervals on the periphery of the liquid outlet channel 21. The lower end of the liquid outlet channel 21 is connected to the upper end of the liquid guide sleeve 3. The guide sleeve 22 is inserted into the top opening of the air collection chamber 40 and abuts against the first piston 42 . This structure is beneficial to improve the cooperation stability between the headgear 2 and the air-assisted elastic component 4 .

An inflation port 413 is opened on the outer peripheral wall of the air collection sleeve 41 , and the inflation port 413 is provided with an inflation nozzle 43 for inflating the air collection chamber 40 , and the inflation nozzle 43 is preferably an air valve. The gas collection chamber 40 of this embodiment generally does not have gas loss, and the above-mentioned gas charging nozzle 43 is provided, and when the gas collection chamber 40 has gas loss due to external reasons, gas can be replenished manually.

The spray head in this embodiment further includes a coil 5 connected to the top of the air collecting sleeve 41 and sheathed on the outer periphery of the head cap 2 . The coil 5 is convenient to be connected with the bottle body.

In this embodiment, the pump core assembly 1 includes a pump body 11, a piston seat 12 and a second piston 13, the pump body 11 has a hollow pump chamber 110, the liquid inlet 101 is located at the bottom of the pump chamber 110, and the piston seat 12 can It is arranged in the pump chamber 110 to move up and down, and the upper port constitutes the liquid outlet 102. The upper end of the piston seat 12 is connected to the lower end of the liquid guide sleeve 3. The second piston 13 is arranged in the pump body 11 to be able to move up and down. Between the inner wall of the pump body 11 and the outer wall of the piston seat 12 . The lower end of the piston seat 12 has an outwardly extending flange 121. The second piston 13 includes a first piston plate 131 arranged close to the inner wall of the pump body 1 and a second piston plate 132 sleeved on the outer periphery of the piston seat 12. The second piston The lower end of the sheet 132 abuts against the upper wall of the flange 121 , the lower end of the piston seat 12 is a blind end, the upper part has a first channel 122 extending longitudinally, and the lower part has a second channel 123 penetrating transversely and communicating with the first channel 122 . The side wall of the pump body 1 is provided with an air vent 111 which can be blocked or opened by the first piston plate 131 .

In this embodiment, the lower end of the liquid guide sleeve 3 is provided with a matching sleeve 31 extending downward and expanding outward, and the matching sleeve 31 surrounds the upper part of the second piston plate 132 therein. This structure is beneficial to reduce the pressure loss in the pump body 11 and improve the pumping effect.

For ease of assembly, the pump body 11 has an upper port, the upper port is closed by the lower end of the air collection sleeve 41 , and a slot 410 capable of mating with the upper edge of the pump body 11 is formed at the lower end of the air collection sleeve 41 .

When using the spray head of this embodiment, press the head cap 2, the liquid guide sleeve 3, the piston seat 12, and the second piston 13 will move down accordingly, and the air in the pump body 11 will be discharged. During this process, the first piston 42 will be pressed by the head The cap 2 is pressed down to squeeze the air in the air collection chamber 40; when the head cap 2 is loosened, the compressed air in the air collection chamber 40 pushes the first piston 42 and the head cap 2 to reset upwards. During this process, the pump Negative pressure is generated in the body 11, and the liquid in the bottle is sucked into the pump chamber 110 through the liquid inlet 101; the head cap 2 is pressed again, and the liquid in the pump chamber 110 is squeezed through the inner side of the second piston 13 and the inner side of the piston seat 12. The output of the second channel 123 and the first channel 122 , the liquid guide sleeve 3 and the head cap 2 .

In this embodiment, the gas-assisted elastic component 4 is used to replace the existing metal spring and plastic spring, and the pressure stored when the gas is compressed is used to drive the head cap 2 to reset, which is not only convenient for assembly and recycling, but also has no material loss during use , even if it is used for a long time, it can also ensure good reset stability.

Terms expressing directions are used in the description and claims of the present invention, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "Bottom" and the like are used to describe various exemplary structural parts and elements of the present invention, but these terms are used herein for explanatory purposes only, based on the exemplary orientations shown in the drawings. Since the disclosed embodiments of the present invention can be arranged in different directions, these terms indicating directions are for illustration only and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to the opposite direction or consistent direction.

Claims

A gas-assisted spray head, including a pump core assembly and a head cap, the bottom of the pump core assembly is provided with a liquid inlet, and the top is provided with a liquid outlet, and the head cap is arranged on the pump core assembly so that it can move up and down And it includes a liquid outlet channel connected with the liquid outlet, and it is characterized in that it also includes a liquid guide sleeve and an air-assisted elastic component. The liquid part moves up and down, the head cap is connected to the upper end of the liquid guide sleeve and the liquid outlet channel is connected with the inner cavity of the liquid guide sleeve, and the gas-assisted elastic component is placed on the outer periphery of the liquid guide sleeve to keep the head cap moving upwards all the time. trend.
The gas-assisted sprinkler head according to claim 1, wherein the gas-assisted elastic component includes an air-collecting sleeve and a first piston, and the air-collecting sleeve includes an air-collecting cavity extending vertically close to the liquid guide sleeve, The gas collection chamber has a top opening, the first piston is arranged in the top opening of the gas collection chamber so as to seal a certain amount of gas in the gas collection chamber, the lower end of the head cap is partly against the first piston, and the head When the cap is pressed down, the first piston is driven to move downward and squeeze the air in the air collection chamber; when the head cap is released, the compressed air in the air collection chamber drives the first piston and the head The cap resets upwards.
The gas-assisted nozzle according to claim 2, characterized in that: the air collecting sleeve includes an inner sleeve body and an outer sleeve sleeved with inner and outer intervals, and the inner sleeve body is sleeved on the outer periphery of the liquid guide sleeve, so The outer casing and the lower end of the inner casing are closed and connected, and the air collection chamber is formed between the outer casing and the inner casing, and the air collection chamber is annular.
The gas-assisted spray head according to claim 3, characterized in that: the liquid outlet channel is located at the center of the head cap and extends longitudinally, the head cap is provided with guide sleeves arranged at intervals on the periphery of the liquid outlet channel, the The lower end of the liquid outlet channel is connected with the upper end of the liquid guide sleeve, and the guide sleeve is inserted in the top opening of the gas collection chamber and abuts against the first piston.
The air-assisted sprinkler head according to claim 2, characterized in that: an air charging port is opened on the outer peripheral wall of the air collecting sleeve, and an air charging nozzle for inflating the air collecting chamber is arranged at the air charging port.
The gas-assisted spray head according to any one of claims 2-5, further comprising a coil, the coil is connected to the top of the air collecting sleeve and sleeved on the outer periphery of the head cap.
The gas-assisted spray head according to any one of claims 2-5, wherein the pump core assembly includes a pump body, a piston seat and a second piston, and the pump body has a hollow pump cavity, The liquid inlet is located at the bottom of the pump chamber, the piston seat can move up and down in the pump chamber and the upper port constitutes the liquid outlet, the upper end of the piston seat is connected with the lower end of the liquid guide sleeve, the The second piston is arranged in the pump body so as to move up and down and is sheathed between the inner wall of the pump and the outer wall of the piston seat.
The gas-assisted spray head according to claim 7, characterized in that: the lower end of the piston seat has a flange extending outward, and the second piston includes a first piston plate arranged close to the inner wall of the pump and a sleeve The second piston sheet on the outer periphery of the piston seat, the lower end of the second piston sheet is against the upper wall surface of the support edge, the lower end of the piston seat is a blind end, the upper part has a first channel extending longitudinally, and the lower part has a transverse penetration and is connected to the first channel. A channel connected to a second channel.
The gas-assisted sprinkler head according to claim 8, characterized in that: the lower end of the liquid guide sleeve is provided with a matching sleeve extending downward and expanding outward, and the matching sleeve surrounds the upper part of the second piston plate.
The gas-assisted spray head according to claim 7, characterized in that: the pump body has an upper port, the upper port is closed by the lower end of the air collection sleeve, and the lower end of the air collection sleeve is formed to be connected with the pump body. Slots where the upper edge mates.