Foam generating device

Abstract

A foam generating device comprises a shell, a rotating shaft, an impeller and a foam maker, the shell is provided with an inner cavity, one side of the shell is provided with a mounting hole allowing the rotating shaft to be rotationally connected, the rotating shaft comprises a first end located outside the shell and a second end located in the inner cavity, and the impeller is connected to the first end of the rotating shaft; the foam maker is connected to the second end of the rotating shaft, the shell is provided with an air inlet, a liquid inlet and a foam outlet which are all communicated with the inner cavity, the impeller is driven by fluid to rotate, and when the impeller rotates, the foam maker is driven by the rotating shaft to rotate. And the foam maker sucks and mixes media at the air inlet and the liquid inlet and then extrudes the media to the foam outlet. According to the scheme, foam can be generated under the condition that a battery is not needed for power supply, the effects of energy conservation and emission reduction are effectively achieved, the manufacturing cost is low, and good practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cleaning equipment, more particularly to a foam generating device. BACKGROUND

[0002] Users often use cleaning liquid when cleaning, however, in actual use, the proportion of cleaning liquid and clean water is difficult to control artificially, for example, excessive cleaning liquid will lead to waste, and too little cleaning liquid will lead to poor cleaning effect, and it is difficult to achieve balance.

[0003] In order to solve the above problems, foam generators gradually begin to replace traditional cleaning liquid on the market, foam generators can automatically mix cleaning liquid and air at a suitable ratio, and then discharge foam, which ensures cleaning effect and avoids waste of cleaning liquid. The existing foam generator basically adopts an electric motor as power, the electric motor is powered by a battery to drive the output shaft to rotate, and the output shaft drives the foaming device to rotate, mixes the cleaning liquid and air at a suitable ratio, and then discharges the foam. However, the use of an electric motor means that a series of components such as a battery and a circuit board are required, which not only has high cost, but also causes environmental pollution and energy consumption, and does not meet the requirements of green environmental protection. SUMMARY

[0004] The utility model aims at solving the problem that the foam generator in the prior art basically adopts an electric motor as power, which not only has high cost, but also causes environmental pollution and energy consumption, and does not meet the requirements of green environmental protection.

[0005] To solve the above problems, the utility model provides a foam generating device, which comprises a shell, a rotating shaft, an impeller and a foaming device, the shell has an inner cavity, and one side of the shell is provided with a mounting hole for rotating connection of the rotating shaft, the rotating shaft comprises a first end portion outside the shell and a second end portion in the inner cavity, the impeller is connected to the first end portion of the rotating shaft, the foaming device is connected to the second end portion of the rotating shaft, the shell is provided with an air inlet, a liquid inlet and a bubble outlet which are all communicated with the inner cavity, the impeller is driven to rotate by fluid, and when the impeller rotates, the foaming device is driven to rotate by the rotating shaft, so that the foaming device sucks and mixes the medium of the air inlet and the liquid inlet and then extrudes it to the bubble outlet.

[0006] The shell is used to be installed to the water pipe or the bathroom faucet, and the impeller is located in the water pipe or the outlet of the bathroom faucet, so that the impeller can be driven to rotate when the water pipe or the bathroom faucet has water flow. Compared with the prior art, the above scheme improves the foam generating device, directly uses the external water flow as power to drive the impeller to rotate, and then the impeller drives the foamer to rotate through the rotating shaft, so that the foamer sucks and mixes the media of the air inlet and the liquid inlet and then extrudes them to the bubble outlet, thereby realizing the generation of foam without battery power supply, effectively realizing the effect of energy saving and emission reduction, and having low manufacturing cost and good practicability.

[0007] In an improved scheme, the shell comprises a shell body and an end cover which are detachably connected, the inner cavity is formed by the shell body and the end cover, and the mounting hole is arranged on the end cover, thereby facilitating disassembly and maintenance.

[0008] In an improved scheme, the foamer is a diaphragm pump.

[0009] In an improved scheme, the diaphragm pump comprises an eccentric wheel, and first, second and third one-way membranes which are all bowl-shaped, the eccentric wheel is connected to the second end of the rotating shaft, the first one-way membrane is connected to the inner side of the air inlet, the second one-way membrane is connected to the inner side of the liquid inlet, and the third one-way membrane is connected to the inner side of the bubble outlet, the liquid transmission directions of the first and second one-way membranes are both from outside to inside, the liquid transmission direction of the third one-way membrane is from inside to outside, the convex parts of the first, second and third one-way membranes all face the eccentric wheel, the eccentric wheel drives the first, second and third one-way membranes to deform by rotating, so that the gas of the air inlet and the cleaning liquid of the liquid inlet enter the inner cavity through the first and second one-way membranes respectively and are mixed into foam, and the foam is discharged from the bubble outlet through the third one-way membrane.

[0010] In an improved scheme, the foamer is a gear pump.

[0011] In an improved scheme, the gear pump comprises a gear, the gear is connected to the second end of the rotating shaft, the air inlet and the liquid inlet are arranged on the upper part of the shell, the bubble outlet is arranged on the lower part of the shell, and the air inlet, the liquid inlet and the bubble outlet all face the outer peripheral side of the gear, the inner cavity is cylindrical and coaxial with the gear, the gear gap of the outer peripheral side of the gear is in close contact with the inner peripheral wall of the inner cavity, and the gear drives the gas of the air inlet and the cleaning liquid of the liquid inlet to enter the inner cavity and be mixed into foam by rotating, and the foam is discharged from the bubble outlet.

[0012] In an improved scheme, the foamer is a screw pump.

[0013] In an improved scheme, the screw pump comprises a screw coaxially connected to the second end of the rotating shaft, the gas inlet and the liquid inlet are respectively arranged at the front of the shell, the foam outlet is arranged at the rear of the shell, and the gas inlet, the liquid inlet and the foam outlet are all directed to the outer periphery of the screw, the inner cavity is cylindrical and coaxial with the screw, the tooth gap of the outer periphery of the screw is in close contact with the inner periphery of the inner cavity, and the screw rotates to make the gas in the gas inlet and the cleaning liquid in the liquid inlet enter the inner cavity and move from the rear to the front to be mixed into foam, which is then discharged from the foam outlet. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Figure 1 is a schematic view of the installation of a foam generating device;

[0015] Figure 2 Figure 2 is a schematic view of the cross section of the installation of a foam generating device;

[0016] Figure 3 Figure 3 is a schematic view of the installation of a foam generating device; Figure 2 Figure 4 is a schematic view of the enlarged A area in Figure 3;

[0017] Figure 4 Figure 5 is a schematic view of another embodiment of the enlarged A area in Figure 3; Figure 2

[0018] Figure 6 is a schematic view of another embodiment of the enlarged A area in Figure 3; Figure 5 Figure 2 Figure 7 is a schematic view of another embodiment of the enlarged A area in Figure 3.

[0019] BRIEF DESCRIPTION OF DRAWINGS,

[0020] 1, shell; 101, shell; 102, end cover; 11, inner cavity; 12, mounting hole; 13, gas inlet; 14, liquid inlet; 15, foam outlet; 2, rotating shaft; 3, impeller; 4, foamer; 4a, gear; 41b, eccentric wheel; 42b, one-way membrane; 4c, screw; 5, liquid supply pipe; 51, first flow channel; 52, second flow channel; 53, adjusting hole; 6, switch; 61, overflow hole. DETAILED DESCRIPTION

[0021] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0022] ​In the following description of the embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0023] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0024] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0025] Please refer to Figures 1-3 The embodiment of the present application provides a foam generating device, which comprises a shell 1, a rotating shaft 2, an impeller 3 and a foaming device 4. The shell 1 has an inner cavity 11, and one side of the shell 1 is provided with a mounting hole 12 for rotating connection of the rotating shaft 2. The rotating shaft 2 comprises a first end portion located outside the shell 1 and a second end portion located in the inner cavity 11. The impeller 3 is connected to the first end portion of the rotating shaft 2, and the foaming device 4 is connected to the second end portion of the rotating shaft 2. The shell 1 is provided with an air inlet 13, a liquid inlet 14 and a bubble outlet 15, which are all communicated to the inner cavity 11. The impeller 3 is driven to rotate by fluid, and when the impeller 3 rotates, the foaming device 4 is driven to rotate by the rotating shaft 2, so that the foaming device 4 sucks and mixes the medium of the air inlet 13 and the liquid inlet 14 and then extrudes it to the bubble outlet 15.

[0026] In the above scheme, the shell 1 is used to be installed to a water pipe or a bathroom faucet, and the impeller 3 is located in the water pipe or the outlet of the bathroom faucet, so that when water flows through the water pipe or the bathroom faucet, the impeller 3 can be driven to rotate. The air inlet 13 is directly communicated with the outside, and the liquid inlet 14 is used to be communicated with a bottle body containing cleaning liquid. Compared with the prior art, the above scheme improves the foam generating device, directly uses the water flow from the outside as power to drive the impeller 3 to rotate, and then the impeller 3 drives the foaming device 4 to rotate through the rotating shaft 2, so that the foaming device 4 sucks and mixes the medium of the air inlet 13 and the liquid inlet 14 and then extrudes it to the bubble outlet 15, thereby realizing the generation of foam without the need of battery power supply, effectively realizing the effect of energy saving and emission reduction, and having low manufacturing cost and good practicability.

[0027] In the embodiment, the shell 1 comprises a casing 101 and an end cover 102 connected detachably, the inner cavity 11 is formed by the casing and the end cover, and the mounting hole 12 is formed in the end cover to facilitate disassembly and maintenance. In addition, in order to facilitate use, a liquid supply pipe 5 can be arranged at the middle section of the water pipe or at the water outlet of the bathroom faucet. The liquid supply pipe 5 has a branch into a first flow channel 51 and a second flow channel 52, and the first flow channel 51 and the second flow channel 52 have entrances adjacent to each other. The liquid supply pipe 5 is provided with an adjusting hole 53 corresponding to the positions of the entrances of the first flow channel 51 and the second flow channel 52 and extending radially along the liquid supply pipe 5. A switch member 6 is slidingly inserted into the adjusting hole 53. The switch member 6 comprises a button portion outside the liquid supply pipe 5 and a switching portion inside the liquid supply pipe 5. The switching portion has a flow hole 61 extending axially along the liquid supply pipe 5. The switch member 6 controls the flow hole 61 to be in communication with the entrance of the first flow channel 51 or the second flow channel 52 by moving in the adjusting hole 53, so that the impeller 3 is driven to rotate only when the switch member 6 controls the water flow in the liquid supply pipe 5 to flow through the second flow channel 52, and foam is generated at this time. When the switch member 6 controls the water flow in the liquid supply pipe 5 to flow through the first flow channel 51 only, the impeller 3 does not rotate and no foam is generated.

[0028] With Figure 1 reference to the base, the shell 1 is cylindrical and the axis extends in the front-rear direction. The inner cavity 11 is cylindrical and located substantially inside the casing. The inner cavity 11 has a rear opening, and the end cover is press-fitted into the rear opening of the inner cavity 11 to achieve detachable connection with the casing. The rotating shaft 2 is coaxially arranged relative to the inner cavity 11.

[0029] As Figure 3 shown in the embodiment, the foaming device 4 is a gear pump 4a. The gear pump 4a comprises a gear 4a connected to the second end portion of the rotating shaft 2. The air inlet 13 and the liquid inlet 14 are both formed in the upper portion of the shell 1, and the foam outlet 15 is formed in the lower portion of the shell 1. The air inlet 13, the liquid inlet 14 and the foam outlet 15 all face the outer peripheral side of the gear 4a. The inner cavity 11 of the shell 1 is cylindrical and coaxial with the gear 4a. The gear gap on the outer peripheral side of the gear 4a is in close contact with the inner peripheral wall of the inner cavity 11, so that the gear 4a rotates to make the gas in the air inlet 13 and the cleaning liquid in the liquid inlet 14 mix in the inner cavity 11 to form foam, which is then discharged from the foam outlet 15.

[0030] or as Figure 4As shown, in another embodiment, the foamer 4 is a diaphragm pump. More specifically, the diaphragm pump in this embodiment includes an eccentric wheel 41b and a first one-way membrane 42b, a second one-way membrane 42b, and a third one-way membrane 42b, all of which are bowl-shaped. The eccentric wheel 41b is connected to the second end of the rotating shaft 2. The air inlet 13, the liquid inlet 14, and the bubble outlet 15 are all located on the front side of the housing. The first one-way membrane 42b is connected to the inner side of the air inlet 13 near the inner cavity 11. The second one-way membrane 42b is connected to the inner side of the liquid inlet 14 near the inner cavity 11. The third one-way membrane 42b is connected to the inner side of the bubble outlet 15 near the inner cavity 11. The liquid permeation direction of the first one-way membrane 42b and the second one-way membrane 42b is from the outside to the inside. The liquid permeation direction of the third one-way membrane 42b is from the outside to the inside. The liquid direction is from the inside out. The protrusions of the first one-way membrane 42b, the second one-way membrane 42b, and the third one-way membrane 42b all face the eccentric wheel 41b. The eccentric wheel 41b rotates to drive the first one-way membrane 42b, the second one-way membrane 42b, and the third one-way membrane 42b to deform, so that the gas from the air inlet 13 and the cleaning liquid from the liquid inlet 14 enter the inner cavity 11 through the first one-way membrane 42b and the second one-way membrane 42b respectively and mix into foam. The foam is then discharged from the foam outlet 15 through the third one-way membrane 42b.

[0031] Or such as Figure 5 As shown, in another embodiment, the foamer 4 is a screw pump 4c. The screw pump 4c includes a screw 4c, which is coaxially connected to the second end of the rotating shaft 2. The air inlet 13 and the liquid inlet 14 are respectively opened at the rear of the housing 1, and the foam outlet 15 is opened at the front of the housing 1. The air inlet 13, the liquid inlet 14 and the foam outlet 15 all face the outer peripheral side of the screw 4c. The inner cavity 11 of the housing 1 is cylindrical and coaxial with the screw 4c. The tooth gaps on the outer peripheral side of the screw 4c fit against the inner peripheral wall of the inner cavity 11. The screw 4c rotates so that the gas from the air inlet 13 and the cleaning liquid from the liquid inlet 14 enter the inner cavity 11 and move from back to front to mix into foam. The foam is then discharged from the foam outlet 15.

[0032] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In the description of the application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example", or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0034] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A foam generating device, characterized in that, The utility model provides a kind of foam generator, including shell (1), rotating shaft (2), impeller (3) and foam generator (4), the shell (1) has inner cavity (11), and the side of shell (1) is equipped with the mounting hole (12) for rotating connection of rotating shaft (2), the rotating shaft (2) includes the first end portion located outside shell (1) and the second end portion located inner cavity (11), the impeller (3) is connected to the first end portion of rotating shaft (2), the foam generator (4) is connected to the second end portion of rotating shaft (2), the shell (1) is equipped with the gas inlet (13), liquid inlet (14) and bubble outlet (15) all connected to inner cavity (11), the impeller (3) is rotated by fluid driving, when the impeller (3) rotates, the foam generator (4) is rotated by rotating shaft (2) to make foam generator (4) mixed after the medium of gas inlet (13) and liquid inlet (14) is inhaled and is extruded to bubble outlet (15).

2. The foam generating device of claim 1, wherein, The shell (1) is used to be installed to water pipe or bathroom faucet, and the impeller (3) is located in water pipe or bathroom faucet outlet, so as to drive the impeller (3) to rotate when water flows through water pipe or bathroom faucet.

3. The foam generating device of claim 1, wherein, The shell (1) includes detachably connected shell and end cover, the inner cavity (11) is formed by shell and end cover, and the mounting hole (12) is arranged in the end cover.

4. A foam generating device according to any one of claims 1 to 3, characterised in that, The foam generator (4) is a diaphragm pump.

5. The foam generating device of claim 4, wherein, The diaphragm pump includes eccentric wheel (41b), and first one-way membrane, second one-way membrane and third one-way membrane, the eccentric wheel (41b) is connected to the second end portion of rotating shaft (2), the first one-way membrane is connected to the inner side of gas inlet (13), the second one-way membrane is connected to the inner side of liquid inlet (14), the third one-way membrane is connected to the inner side of bubble outlet (15), the liquid permeation direction of first one-way membrane and second one-way membrane is from outside to inside, the liquid permeation direction of third one-way membrane is from inside to outside, the convex part of first one-way membrane, second one-way membrane and third one-way membrane all faces eccentric wheel (41b), the eccentric wheel (41b) drives first one-way membrane, second one-way membrane and third one-way membrane to deform by rotating, so that the gas of gas inlet (13) and the cleaning liquid of liquid inlet (14) enter inner cavity (11) and mix into foam by first one-way membrane and second one-way membrane respectively, and the foam is discharged from bubble outlet (15) by third one-way membrane.

6. The foam generating device according to any one of claims 1 to 3, wherein The foam generator (4) is a gear pump.

7. The foam generating device of claim 6, wherein, The gear pump comprises a gear (4a) connected to the second end of the rotating shaft (2), the gas inlet (13) and the liquid inlet (14) are both arranged on the upper part of the shell (1), the foam outlet (15) is arranged on the lower part of the shell (1), and the gas inlet (13), the liquid inlet (14) and the foam outlet (15) all face the outer peripheral side of the gear (4a), the inner cavity (11) is cylindrical and coaxial with the gear (4a), the gear gap on the outer peripheral side of the gear (4a) is in close contact with the inner peripheral wall of the inner cavity (11), the rotation of the gear (4a) causes the gas in the gas inlet (13) and the cleaning liquid in the liquid inlet (14) to enter the inner cavity (11) and mix into foam, and the foam is discharged from the foam outlet (15).

8. The foam generating device according to any one of claims 1 to 3, wherein The foaming device (4) is a screw pump.

9. The foam generating device of claim 8, wherein, The screw pump comprises a screw (4c) coaxially connected to the second end of the rotating shaft (2), the gas inlet (13) and the liquid inlet (14) are both arranged on the rear part of the shell (1), the foam outlet (15) is arranged on the front part of the shell (1), and the gas inlet (13), the liquid inlet (14) and the foam outlet (15) all face the outer peripheral side of the screw (4c), the inner cavity (11) is cylindrical and coaxial with the screw (4c), the gear gap on the outer peripheral side of the screw (4c) is in close contact with the inner peripheral wall of the inner cavity (11), the rotation of the screw (4c) causes the gas in the gas inlet (13) and the cleaning liquid in the liquid inlet (14) to enter the inner cavity (11) and move from the rear to the front to mix into foam, and the foam is discharged from the foam outlet (15).

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