Novel foam liquid distributor

Abstract

The utility model discloses a novel foam liquid distributor which comprises a shell, a nozzle, a compression pipe and a connector used for being connected with a container, the upper end of the shell and the connector are assembled in a sealing mode, the nozzle is installed at the bottom of the shell, and the compression pipe is installed in the shell. A liquid inlet one-way valve is arranged in a liquid inlet channel in the upper portion of the shell, an air inlet one-way valve is arranged on the side wall of the upper portion of the shell and located between the liquid inlet one-way valve and the connector, and the container is communicated with the outside sequentially through the liquid inlet channel and the air inlet one-way valve. The air inlet one-way valve is arranged on the side wall, located between the liquid inlet one-way valve and the connector, of the upper shell, the air inlet one-way valve is communicated with the container and the outside, when the compression pipe rebounds and resets, the air inlet one-way valve is automatically opened to suck outside air into the container, and air pressure inside and outside the container is balanced and does not become flat. The whole implementation structure is very simple, the air pressure balance effect is good, reliability and practicability are achieved, manufacturing is easy, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary cleaning products, in particular to a foam liquid dispenser for providing sanitary products such as hand washing liquid, disinfectant, bath liquid and the like. Background Art

[0002] In many occasions, some disinfection and hand washing facilities are equipped, such as hospitals, hotels, airports, docks, schools, stations and other places. Such facilities usually have upper and lower liquid discharge methods. The upper liquid discharge method will leave more liquid in the bottle, causing waste. The lower liquid discharge method can solve the problem of liquid residue, but the traditional structure of the inverted liquid discharge method cannot replace the air between the liquid container and the outside world, which will cause the liquid bottle to deform due to the drop in internal air pressure, and even have the risk of rupture. At present, the foam liquid dispenser with ventilation function on the market is basically an upper liquid discharge method, which uses the reciprocating motion of the internal structure of the pump to achieve ventilation, and the pump is used above the liquid container; and the lower liquid discharge method is not easy to design a ventilation structure because the pump is below the liquid container. Even if there is ventilation, the structure will become significantly complicated. Ventilation needs to be achieved through the bottle cap on the top of the container or other methods, so there is usually no ventilation function, such as a foam liquid dispenser disclosed in patent CN202492046U. Utility Model Content

[0003] The utility model aims at the defects of the prior art and provides a novel foam liquid dispenser which has a simpler structure, a more reasonable design, is more reliable and practical, has a ventilation function and can maintain the air pressure balance inside and outside the container.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a new foam liquid dispenser, including a shell, a nozzle, a compression tube and a connector for connecting a container, the upper end of the shell is sealed and assembled with the connector, the nozzle is installed at the bottom of the shell, and the compression tube is installed in the shell. It is characterized in that: a liquid inlet check valve is installed in the liquid inlet channel at the upper part of the shell, an air inlet check valve is installed on the upper side wall of the shell, the air inlet check valve is located between the liquid inlet check valve and the connector, and the container is connected to the outside world through the liquid inlet channel and the air inlet check valve in turn.

[0005] Furthermore, the shell includes an upper shell and a lower shell, the upper shell is sealed and connected to the connector, the liquid inlet check valve is installed in the upper shell and close to the connector; the air inlet check valve is installed on the side wall of the upper shell and close to the liquid inlet check valve and the connector respectively.

[0006] Furthermore, the shell body also includes an inner shell, the inner shell is installed in the lower shell, and an air channel is formed between the lower shell and the inner shell; the compression tube includes an inner compression tube and an outer compression tube, the upper and lower ends of the inner compression tube are respectively sealed and assembled with the upper shell and the inner shell, and the upper and lower ends of the outer compression tube are respectively sealed and assembled with the upper shell and the lower shell.

[0007] Furthermore, the outer compression tube is sleeved on the outside of the inner compression tube, a liquid chamber is formed in the inner compression tube, and an air chamber is formed between the outer compression tube and the inner compression tube; the liquid chamber is connected to the liquid inlet one-way valve and the nozzle, and the air chamber is connected to the nozzle through the air channel.

[0008] Furthermore, a liquid outlet one-way valve is installed between the inner shell and the lower shell through a spring, and the lower end of the spring rests on the lower shell; a mixing chamber is formed in a space between the liquid outlet one-way valve and the nozzle in the lower shell, the air chamber is connected to the mixing chamber through an air channel, and the liquid outlet one-way valve is connected to the nozzle through the mixing chamber.

[0009] Furthermore, both the inner compression tube and the outer compression tube are made of elastic bellows tubes, and interference fit is used to achieve a sealed connection between the inner compression tube and the upper shell and the inner shell, and between the outer compression tube and the upper shell and the lower shell; interference fit is also used to achieve a sealed connection between the upper shell and the connector.

[0010] Furthermore, a filter screen is arranged at the lower part of the lower shell, and the filter screen is sealed in the lower shell by a nozzle.

[0011] Furthermore, the bottom of the connector and the portion where the connector docks with the upper shell are concave structures, in which the air intake check valve is embedded and fixed in the side wall hole of the upper shell by limiting the connector; there is a gap for air circulation between the upper shell and the air intake check valve and the connector.

[0012] Furthermore, a gasket is arranged at the bottom of the connector.

[0013] The utility model provides an air intake check valve on the side wall of the upper shell between the liquid intake check valve and the connector, the air intake check valve connects the container with the outside, and when the compression tube rebounds and resets, the air intake check valve automatically opens to suck the outside air into the container, so that the air pressure inside and outside the container reaches balance without flattening. The whole implementation structure is very simple, the air pressure balance effect is good, it is reliable and practical, easy to make, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic cross-sectional structure diagram of a first embodiment of the utility model;

[0015] Figure 2 This is a schematic cross-sectional structure diagram of a second embodiment of the utility model;

[0016] Figure 3 It is a cross-sectional structural diagram of the first embodiment of the utility model in application state.

[0017] In the figure, 11 is an upper shell, 12 is a lower shell, 13 is a mixing chamber, 14 is an inner shell, 15 is a nozzle, 16 is a filter screen, 17 is a nozzle core, 18 is a nozzle cover, 19 is a rubber plug cover, 2 is a connector, 21 is a gasket, 3 is an inner compression tube, 31 is a liquid chamber, 4 is an outer compression tube, 41 is an air chamber, 42 is an air channel, 51 is a liquid inlet check valve, 52 is a liquid outlet check valve, 53 is a spring, 6 is an air inlet check valve, 71 is a fixing device, 72 is a driving mechanism, 73 is a pushing member, 74 is a fixing member, 8 is a container, A is a liquid flow direction, and B is an air flow direction. DETAILED DESCRIPTION

[0018] In this embodiment, refer to Figure 1 The novel foam liquid dispenser comprises a shell, a nozzle 15, a compression tube (such as an inner compression tube 3, in which a liquid chamber 31 is formed) and a connector 2 for connecting a container 8. The upper end of the shell is sealed and assembled with the connector 2. The nozzle 15 is installed at the bottom of the shell. A nozzle core 17 can be installed in the nozzle 15. The lower end can be covered with a nozzle cover 18. The compression tube is installed in the shell. A liquid inlet check valve 51 is installed in the liquid inlet channel at the upper part of the shell. An air inlet check valve 6 is installed on the upper side wall of the shell. The air inlet check valve 6 is located between the liquid inlet check valve 51 and the connector 2. The container 8 is connected to the outside world through the liquid inlet channel and the air inlet check valve 6 in turn.

[0019] The shell includes an upper shell 11 and a lower shell 12. The upper shell 11 is sealed with the connector 2. The liquid inlet check valve 51 is installed in the upper shell 11 and close to the connector 2. The air inlet check valve 6 is installed on the side wall of the upper shell 11 and close to the liquid inlet check valve 51 and the connector 2 respectively.

[0020] As a second embodiment, the shell body also includes an inner shell 14, the inner shell 14 is installed in the lower shell 12, and an air channel 42 is formed between the lower shell 12 and the inner shell 14; the compression tube includes an inner compression tube 3 and an outer compression tube 4, the upper and lower ends of the inner compression tube 3 are respectively assembled with the upper shell 11 and the inner shell 14 in an inverted and sealed manner, and the upper and lower ends of the outer compression tube 4 are respectively assembled with the upper shell 11 and the lower shell 12 in an inverted and sealed manner.

[0021] The outer compression tube 4 is sleeved on the outer side of the inner compression tube 3, a liquid chamber 31 is formed in the inner compression tube 3, and an air chamber 41 is formed between the outer compression tube 4 and the inner compression tube 3; the liquid chamber 31 is connected to the liquid inlet check valve 51 and the nozzle 15, and the air chamber 41 is connected to the nozzle 15 through the air channel 42. The main difference between this embodiment and the previous embodiment is that the outer compression tube 4 and the air chamber 41 are added.

[0022] A liquid discharge one-way valve 52 is installed between the inner shell 14 and the lower shell 12 via a spring 53, and the lower end of the spring 53 abuts against the lower shell 12 (a rubber plug cover 19 can also be covered on the liquid discharge one-way valve 52 of the first embodiment); a mixing chamber 13 is formed in a space between the liquid discharge one-way valve 52 and the nozzle 15 in the lower shell 12, the air chamber 41 is connected to the mixing chamber 13 via the air channel 42, and the liquid discharge one-way valve 52 is connected to the nozzle 15 via the mixing chamber 13.

[0023] Both the inner compression tube 3 and the outer compression tube 4 are made of elastic bellows tubes, and interference fit is used to achieve a sealed connection between the inner compression tube 3 and the upper shell 11 and the inner shell 14, and between the outer compression tube 4 and the upper shell 11 and the lower shell 12; interference fit is also used to achieve a sealed connection between the upper shell 11 and the connector 2.

[0024] A filter screen 16 is provided at the lower portion of the lower shell 12 , and the filter screen 16 is sealed in the lower shell 12 by a nozzle 15 .

[0025] The bottom of the connector 2 and the portion where it docks with the upper shell 11 are concave structures, in which the air intake check valve 6 is embedded and fixed in the side wall hole of the upper shell 11 by limiting the connector 2; there is a gap for air circulation between the upper shell 11 and the air intake check valve 51 and the connector 2.

[0026] A gasket 21 is provided at the bottom of the connector 2 , and after the container 8 filled with the specified liquid is placed in the connector 2 , the gap between the two is sealed by the gasket 21 .

[0027] The utility model is combined with the container 8 and installed on the driving system. The driving system includes a fixing device 71, a driving mechanism 72, a pushing member 73 and a fixing member 74. The fixing device 71 is fixed on a support such as a wall, the pushing member 73 (such as a slider) is movably assembled with the fixing device 71, and the fixing member 74 is fixedly assembled with the fixing device 71; the driving mechanism 72 (such as a matching structure of a motor and a cam) is installed on the fixing device 71, and the pushing member 73 is connected to the driving mechanism 72; the fixing member 74 is connected and fixed to the upper shell 11, and the pushing member 73 is connected and fixed, and both can be fixed by plugging.

[0028] Working process: 1. Put your hand in the automatic sensing area of ​​the device, the device receives the signal and works, the driving mechanism 72 works to drive the pusher 73 to move upward, driving the lower shell 12 to move upward, the air in the liquid chamber 31 and the air chamber 41 is compressed, the liquid inlet check valve 51 and the air inlet check valve 6 are both pressurized and closed to ensure no liquid leakage, and the liquid outlet check valve 52 is pressurized to open and discharge the air.

[0029] 2. After the pusher 73 moves to a certain position, it is separated from the driving mechanism 72. The inner compression tube 3 and the outer compression tube 4 begin to rebound downward under their own elastic force, and the liquid outlet check valve 52 is closed under the action of the spring 53. The lower shell 12 continues to move downward, and negative pressure is formed in the liquid chamber. The liquid inlet check valve 51 is opened to suck in liquid. At the same time, the air inlet check valve 6 is also opened to suck in air, and the air enters the container 8 through the liquid inlet channel of the upper shell 11, so that the pressure inside and outside the container 8 is balanced and it will not become flat because there is no pressure difference.

[0030] When the lower shell 12 moves downward, air enters the air chamber 41 from the nozzle 15 through the filter 16, the mixing chamber 13 and the air channel 42, and brings the residual foamy liquid into the air chamber 41 through the mixing chamber 13 and the air channel 41, preventing the residual foam from turning into liquid and dripping, saving costs and being more environmentally friendly.

[0031] 3. After the inner compression tube 3 and the outer compression tube 4 rebound into place, the driving mechanism 72 drives the pusher 73 to move upward again, and the liquid in the liquid chamber 31 flushes the liquid outlet one-way valve 52, and the air is compressed and discharged through the air channel. The air and liquid are mixed in the mixing chamber 13, and the liquid mixed with air passes through the filter 16 to form a uniform and delicate foam liquid.

[0032] During operation, the liquid chamber 31 and the air chamber 41 perform synchronous reciprocating motion due to the elasticity of the inner compression tube 3 and the outer compression tube 4, and a quantitative ratio of liquid and air is simultaneously input into the mixing chamber 13, thereby spitting out foamy liquid.

[0033] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present application. All equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present invention.

Claims

1. A novel foam liquid dispenser, comprising a housing, a nozzle, a compression tube and a connector for connecting a container, wherein the upper end of the housing is sealed and assembled with the connector, the nozzle is mounted at the bottom of the housing, and the compression tube is mounted in the housing, characterized in that: A liquid inlet check valve is installed in the liquid inlet channel at the upper part of the shell, and an air inlet check valve is installed on the upper side wall of the shell. The air inlet check valve is located between the liquid inlet check valve and the connector. The container is connected to the outside world through the liquid inlet channel and the air inlet check valve in turn.

2. The novel foam liquid dispenser according to claim 1 is characterized in that: The shell comprises an upper shell and a lower shell, the upper shell is sealed and connected to the connector, the liquid inlet check valve is installed in the upper shell and close to the connector; the air inlet check valve is installed on the side wall of the upper shell and close to the liquid inlet check valve and the connector respectively.

3. The novel foam liquid dispenser according to claim 2 is characterized in that: The shell body also includes an inner shell, which is installed in the lower shell, and an air channel is formed between the lower shell and the inner shell; the compression tube includes an inner compression tube and an outer compression tube, the upper and lower ends of the inner compression tube are respectively sealed with the upper shell and the inner shell, and the upper and lower ends of the outer compression tube are respectively sealed with the upper shell and the lower shell.

4. The novel foam liquid dispenser according to claim 3 is characterized in that: The outer compression tube is sleeved on the outside of the inner compression tube, a liquid chamber is formed in the inner compression tube, and an air chamber is formed between the outer compression tube and the inner compression tube; the liquid chamber is connected to the liquid inlet one-way valve and the nozzle, and the air chamber is connected to the nozzle through the air channel.

5. The novel foam liquid dispenser according to claim 4 is characterized in that: A liquid outlet one-way valve is installed between the inner shell and the lower shell through a spring, and the lower end of the spring is against the lower shell; a mixing chamber is formed in a space between the liquid outlet one-way valve and the nozzle in the lower shell, the air chamber is connected to the mixing chamber through an air channel, and the liquid outlet one-way valve is connected to the nozzle through the mixing chamber.

6. The novel foam liquid dispenser according to claim 3 is characterized in that: Both the inner compression tube and the outer compression tube are made of elastic bellows tubes. Interference fit is used to achieve sealed connection between the inner compression tube and the upper shell and the inner shell, and between the outer compression tube and the upper shell and the lower shell; interference fit is also used to achieve sealed connection between the upper shell and the connector.

7. The novel foam liquid dispenser according to claim 2 is characterized in that: A filter screen is arranged at the lower part of the lower shell and is sealed in the lower shell by a nozzle.

8. The novel foam liquid dispenser according to claim 2 is characterized in that: The bottom of the connector and the upper shell are butted together in a concave structure, in which the air intake check valve is embedded and fixed in the side wall hole of the upper shell by limiting the connector; there is a gap for air circulation between the upper shell and the air intake check valve and the connector.

9. The novel foam liquid dispenser according to claim 1 is characterized in that: A gasket is arranged at the bottom of the connector.

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