CN211621841U

CN211621841U - Foam generating device and electronic toilet capable of generating foam

Info

Publication number: CN211621841U
Application number: CN201921388416.XU
Authority: CN
Inventors: 谢岳荣; 利建全; 李昌; 罗嗣胜
Original assignee: Arrow Home Group Co Ltd
Current assignee: Arrow Home Group Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-10-02
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a foam generating device, which comprises a water storage tank, a foaming agent storage tank, a reducing tee joint, a gas-liquid delivery pump and a foaming cylinder, wherein a water inlet joint of the reducing tee joint is communicated with the water storage tank, an agent inlet joint of the reducing tee joint is communicated with the foaming agent storage tank, a liquid outlet joint of the reducing tee joint is provided with a converging pipeline connected with the gas-liquid delivery pump, and the foaming cylinder is provided with a foaming cavity, an air inlet, a liquid inlet and a foaming outlet which are communicated with the foaming cavity; the gas-liquid delivery pump is connected with the air inlet so as to deliver air to the air inlet, and meanwhile, the gas-liquid delivery pump is connected with the liquid inlet so as to deliver mixed liquid of water and foaming agent in the converging pipeline to the liquid inlet, and the mixed liquid and the air are foamed in the foaming cavity and are sprayed out through the foam outlet. Furthermore, the utility model also discloses an electronic toilet that can produce the foam. The utility model discloses simple structure, it is with low costs, and the foam blowout is effectual.

Description

Foam generating device and electronic toilet capable of generating foam

Technical Field

The utility model relates to a sanitary wares technical field especially relates to a foam generating device and can produce electronic toilet of foam.

Background

After the toilet bowl is used, sometimes dirt in the toilet bowl can not be thoroughly removed through simple flushing, the dirt can be remained after the toilet bowl is used for a long time, bacteria and peculiar smell are generated, air is polluted, and human health can be threatened. The existing toilet bowl is provided with a foam generator, foam generated by the foam generator covers a urinal of the toilet bowl, so that the urinal can be effectively sealed while dirt in the urinal is cleaned, and peculiar smell in the urinal is prevented from dissipating; in addition, the foam helps to prevent water in the urinal from splashing on a human body.

However, the existing foam generating device generally directly introduces tap water decompressed by the decompression valve into the foaming cavity, the water quantity is influenced by water pressure and is uncontrollable, so that the uniformity of foam is poor, and in the foaming cavity, the mixing of water and cleaning solution is insufficient, the blowing resistance is large, and the foam generation is discontinuous. In addition, the existing foam generating system has the defects of complex structure and high cost.

The utility model discloses a toilet seat device is disclosed as chinese patent application No. CN 201520390906.9's utility model patent, the device includes the main part, the main part is equipped with the control unit, foam generating device and foam injection apparatus are controlled respectively by the control unit, foam generating device includes the feed liquor subassembly, the subassembly of intaking, intake subassembly and foaming container, the foaming container is equipped with the inlet, the water inlet, air inlet and foam outlet, the feed liquor subassembly is connected with the inlet, intake subassembly and water inlet are connected, intake subassembly and air inlet are connected, the foam outlet is connected with foam injection apparatus, the foaming container is equipped with predissolved district and foaming district, predissolved district and foaming district intercommunication, the inlet, water inlet and predissolved district intercommunication, air inlet and foaming district intercommunication, foam outlet and foaming district intercommunication. The device realizes the instant generation of foam and improves the utilization efficiency of the foaming agent. However, the device has a complex structure and high cost, and in the using process, because the foaming agent needs to be dissolved in advance, the foaming agent cannot generate foam in real time; when foaming liquid mixes with water, if adopt the mode of motor drive impeller, then mixing arrangement's structure and leakproofness require higher, if adopt the mode of intaking direct impact impeller, then can't guarantee the effect of mixing.

Also like the utility model patent of chinese patent application No. CN201820345235.8, it discloses an intelligent toilet lid with foam generating device, and it uses the injection module to add the foaming agent to need to use agitator motor to stir water and foaming agent, rely on the pump to carry mixed liquid foaming chamber, discharge the washing of closestool in the pocket through the foam nozzle at last. The whole system of the scheme needs at least 4 motor systems, has high operation noise and high cost, is complex to control and is easy to break down.

Still like CN 201680050077.7's utility model patent discloses a foam generating device and toilet, it relies on water valve control running water to take place the water as the foam, set up the pipeline of one section pipe diameter by big grow again that diminishes at the foam spout, running water outlet pipe diameter by big diminish, the velocity of flow accelerates, lead to this pressure reduction, the bypass intake pipe is because the effect of negative pressure, the air is automatic to be carried to the running water export along this pipe, mix and flow forward along with the running water, at the minimum position of foam spout pipe middle part pipe diameter, set up a foaming agent export, carry this department with foaming liquid by a liquid pump, and with the running water that flows through, the air intensive mixing, foam spout outlet pipe rear end pipe diameter increase again, the mixed liquid velocity of flow reduces, and pass through porous network in the export, become the foam outflow. The scheme only uses a liquid pump for foam liquid supplement, but the system pipeline is complex, the mechanical structure of the mixing part of the air, the water and the foam liquid is complex, and the manufacturing process difficulty is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a foam generating device is provided, its simple structure, it is with low costs, and the foam blowout is effectual.

In order to solve the technical problem, the utility model provides a foam generating device, which comprises a water storage tank, a foaming agent storage tank, a reducing tee, a gas-liquid delivery pump and a foaming cylinder,

the reducing tee joint comprises a water inlet joint, an agent inlet joint and a liquid outlet joint, wherein the inner diameter of the water inlet joint is smaller than that of the agent inlet joint, the water inlet joint is communicated with a water storage tank, the agent inlet joint is communicated with a foaming agent storage tank, the liquid outlet joint is provided with a converging pipeline connected with a gas-liquid delivery pump,

the foaming cylinder is provided with a foaming cavity, an air inlet, a liquid inlet and a foam outlet, wherein the air inlet, the liquid inlet and the foam outlet are communicated with the foaming cavity;

the gas-liquid delivery pump is connected with the air inlet so as to deliver air to the air inlet, and meanwhile, the gas-liquid delivery pump is connected with the liquid inlet so as to deliver mixed liquid of water and foaming agent in the converging pipeline to the liquid inlet, and the mixed liquid and the air are foamed in the foaming cavity and are sprayed out through the foam outlet.

As an improvement of the scheme, the ratio of the inner diameters of the water inlet joint, the agent inlet joint and the liquid outlet joint is 1: (2.7-3.2): (3-3.5).

As an improvement of the scheme, the ratio of the inner diameter of the air inlet to the inner diameter of the liquid inlet is 1: (1.25-1.5);

the included angle between the air inlet and the liquid inlet is 70-110 degrees.

As an improvement of the above scheme, the foam cylinder comprises a foam cylinder main body and a foam nozzle, the foam cylinder main body is connected with the foam nozzle, the foam cavity is arranged in the foam cylinder main body, the air inlet and the liquid inlet are arranged at one end of the foam cylinder main body, the foam outlet is arranged at one end of the foam nozzle, and the air inlet and the foam outlet are coaxially arranged with the foam cavity;

the one end that is close to the air inlet in the foaming chamber is equipped with the foaming piece, the foaming chamber is from being close to air inlet one end to being close to the sectional area of a bubble mouth one end and increasing gradually.

As an improvement of the above scheme, a buckle piece is arranged at one end of the foaming nozzle, which is far away from the foam outlet, a foam outlet channel which is coaxial with the foam outlet is arranged in the buckle piece, a clamping groove is arranged in the foaming cylinder body along the circumferential direction, and the buckle piece is clamped with the clamping groove;

the foaming nozzle is provided with a boss between the foam outlet and the buckle piece, the boss corresponds to the end face of the foaming cylinder main body and is provided with a sealing groove, a first sealing ring is arranged in the sealing groove, and the foaming cylinder main body and the foaming nozzle are fastened through screws.

As an improvement of the above scheme, the water storage tank and the foaming agent storage tank are integrally formed;

the tops of the water storage tank and the foaming agent storage tank are flush and are provided with sealing covers, the water storage tank and the foaming agent storage tank are correspondingly provided with accommodating tanks, and second sealing rings are arranged in the accommodating tanks;

the upper part of the water storage tank is provided with an overflow port and a water tank water outlet, the lower part of the water storage tank is provided with a water tank water inlet, the water tank water inlet is connected with a water inlet pipeline, the water tank water outlet is communicated with a water inlet joint, the overflow port is provided with an overflow pipe, and the end part of the overflow pipe extends into a washing pocket of the toilet bowl;

the top of the foaming agent storage box is provided with a foaming agent inlet, the bottom of the foaming agent storage box is provided with a foaming agent outlet, and the foaming agent outlet is communicated with the agent inlet joint.

As an improvement of the scheme, the reducing tee joint is arranged below the foaming agent outlet and the water tank water outlet;

the gas-liquid delivery pump is arranged above the reducing tee;

the bottom of the inner cavity of the foaming agent storage box is obliquely arranged towards the foaming agent outlet.

As an improvement of the scheme, the foaming agent inlet is provided with a liquid adding device, the liquid adding device comprises a liquid adding hopper and a liquid guide pipe, the liquid guide pipe extends into the foaming agent inlet, the liquid adding hopper is arranged at the top of the liquid guide pipe, the liquid adding hopper is obliquely arranged, and the cross section of the liquid adding hopper is gradually reduced from top to bottom.

As an improvement of the scheme, the gas-liquid delivery pump is a diaphragm pump.

Furthermore, the utility model also provides an electronic toilet that can produce foam, including core housing and above-mentioned foam generating device, the liquid feeding device runs through the core and fixes with core housing, articulated on the core housing have with the movable cover of liquid feeding fill looks adaptation.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses a foam generating device, through gas-liquid conveying pump extraction water and foamer, water and foamer are with the velocity of flow of difference through the reducing tee bend entering converge the pipeline tentatively form and mix liquid, get into the foaming chamber through the inlet of a foaming section of thick bamboo at last, gas-liquid conveying pump extraction air is carried to the foaming chamber through the air inlet of a foaming section of thick bamboo with the velocity of flow that is different from mixing liquid simultaneously, the air inlet is with the inlet and sets for the contained angle, make mixed liquid and air intensive mixing, produce fine and smooth and abundant foam at the foaming intracavity, the foam is through a bubble mouth blowout. The utility model can complete the operation of the whole foam generating device only by the gas-liquid delivery pump, and the noise of the generated pump body is low; the water for foaming is not influenced by the change of the water pressure of tap water through the water storage tank, and the uniformity of foam is better; in addition, the utility model realizes the full mixing of water and the foaming agent by designing the reducing tee joint, realizes the full mixing of the mixed liquid of the water and the foaming agent and the air by the structural design of the foaming cylinder, and has fine and rich generated foam and good foaming effect; meanwhile, the external foaming cylinder can be produced in a standardized manner, is small in size, and solves the problems that the foaming cavity of the existing foam generating system is complex in structure, high in sealing requirement and difficult to produce and assemble.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a foam generating device according to the present invention;

FIG. 2 is a schematic structural view of the reducer tee of FIG. 1;

FIG. 3 is a schematic structural view of the foam cartridge of FIG. 1;

FIG. 4 is a schematic view of the cross-sectional A-A structure of FIG. 3;

FIG. 5 is a schematic diagram of the configuration of the water storage tank and blowing agent storage tank of FIG. 1;

FIG. 6 is a schematic view of the cross-sectional structure B-B of FIG. 5;

FIG. 7 is a schematic structural view of an intelligent toilet bowl of the foam generating device of the present invention;

FIG. 8 is a schematic structural view of the inside of the movement housing of FIG. 7 after the removable cover is opened;

fig. 9 is a schematic view of the cross-sectional structure C-C of fig. 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides an embodiment of a foam generating device, which comprises a water storage tank 1, a foaming agent storage tank 2, a reducing tee 3, a gas-liquid delivery pump 4 and a foaming cylinder 5, and with reference to fig. 2, the reducing tee 3 comprises a water inlet joint 31, an agent inlet joint 32 and a liquid outlet joint 33, wherein the inner diameter of the water inlet joint 31 is smaller than that of the agent inlet joint 32, the water inlet joint 31 is communicated with the water storage tank 1, the agent inlet joint 32 is communicated with the foaming agent storage tank 2, the liquid outlet joint 33 is provided with a converging pipeline 6 connected with the gas-liquid delivery pump 4, and with reference to fig. 3 and 4, the foaming cylinder 5 is provided with a foaming cavity 51, the foaming device comprises a foaming cavity 51, a gas inlet 52, a liquid inlet 53 and a foam outlet 54, wherein the gas inlet 52, the liquid inlet 53 and the foam outlet 54 are communicated with each other, the inner diameter of the gas inlet 52 is smaller than that of the liquid inlet 53, and a set included angle is formed between the gas inlet 52 and the liquid inlet 53; the gas-liquid delivery pump 4 is connected with the gas inlet 52 to deliver air to the gas inlet 52, and meanwhile, the gas-liquid delivery pump 4 is connected with the liquid inlet 53 to deliver a mixed liquid of water and a foaming agent in the converging pipeline 6 to the liquid inlet 53, and the mixed liquid and the air are foamed in the foaming cavity 51 and are sprayed out through the foam outlet 54.

This embodiment is through 4 extraction water and the foamer of gas-liquid delivery pump, water and foamer get into through reducing tee bend 3 with different velocity of flow and join pipeline 6 and tentatively form mixed liquid, get into foaming chamber 51 through the inlet 53 of foaming section of thick bamboo 5 at last, 4 extraction air of gas-liquid delivery pump simultaneously and carry to foaming chamber 51 through the air inlet 52 of foaming section of thick bamboo 5 with the velocity of flow that is different from mixed liquid, air inlet 52 is the settlement contained angle with inlet 53, make mixed liquid and air intensive mixing, produce fine and smooth and abundant foam in foaming chamber 51, the foam is spout through play bubble mouth 54.

The gas-liquid delivery pump 4 is preferably a diaphragm pump 4, and the diaphragm pump 4 is a negative pressure suction generating device, which can deliver gas and liquid simultaneously, so that the assembly of the whole set of foam generating device is simpler.

Referring to fig. 5 and 6, the water storage tank 1 and the foaming agent storage tank 2 of the present embodiment are preferably integrally formed, and the installation of the entire set of foam generating system can be also simplified. The top of storage water tank 1 and foamer storage box 2 flushes and is equipped with

closing cap

11, 1 upper portion of storage water tank is equipped with overflow mouth 12 and water

tank delivery port

13, 1 lower part of storage water tank is equipped with water tank water inlet 14, water tank water inlet 14 is connected with water intake pipe, water tank delivery port 13 and water supply connector 31 intercommunication. The water tank water outlet 13 is arranged at the upper part of the water storage tank 1, when water is pumped, the gravity of water needs to be overcome to do work, the situation that water automatically flows into the reducing tee 3 and the foaming agent storage tank 2 along a pipeline to cause the purity of the foaming agent in the foaming agent storage tank 2 to change, and the foaming performance of the foaming agent is easily changed for a long time to influence the foaming effect blown out by the foaming cylinder 5 can be avoided. The overflow port 12 at the upper part of the water storage tank 1 enables the inside of the water storage tank 1 to be communicated with the outside atmospheric pressure, so that the inside and outside atmospheric pressures are kept consistent, and the water in the water storage tank 1 can be pumped out smoothly. Furthermore, the overflow outlet 12 is provided with an overflow pipe (not shown in the drawings), the end of which extends into the wash bowl of the toilet bowl. In the embodiment, preferably, the water level switch is arranged in the water storage tank 1 to control water supplement, when the foaming function is started, when the water level in the water storage tank 1 is lower than a preset water level, the water supplement is simultaneously executed, the water supplement amount is larger than the water amount required by each foaming, and more water amount required by the foaming enters the washing pocket through the overflow pipe.

Because the viscosity of the foaming agent is high, the foaming agent outlet 21 is arranged at the bottom of the foaming agent storage box 2, the foaming agent outlet 21 is communicated with the agent inlet connector 32, and the foaming agent inlet 22 is arranged at the top of the foaming agent storage box 2, so that the foaming agent enters the reducing tee 3 along the pipeline under the action of the self gravity, and the lift requirement of the gas-liquid delivery pump 4 can be reduced. In this embodiment, the foaming agent inlet 22 is preferably provided with a liquid adding device 7, the liquid adding device 7 comprises a liquid adding hopper 71 and a liquid guide pipe 72, the liquid guide pipe 72 extends into the foaming agent inlet 22, the liquid adding hopper 71 is arranged at the top of the liquid guide pipe 72, the liquid adding hopper 71 is obliquely arranged, and the cross section of the liquid adding hopper 71 is gradually reduced from top to bottom, so that liquid adding is facilitated; in addition, in the charging process, when the charging amount of the foaming agent exceeds the volume of the foaming agent storage box 2, the foaming agent rises along the liquid guide pipe 72, and whether the charging amount is enough can be judged through the liquid charging hopper 71 which is obliquely arranged. The sealing cover 11, the water storage tank 1 and the foaming agent storage tank 2 are correspondingly provided with accommodating grooves, and second sealing rings (not shown in the figure) are arranged in the accommodating grooves, so that the sealing cover 11 can well seal the water storage tank 1 and the foaming agent storage tank 2. In addition, in order to prevent foreign matters with large particle sizes from entering the foaming agent, a detachable grid 711 is further provided on the top of the liquid adding hopper 71.

Preferably, the reducing tee 3 is arranged below the foaming agent outlet 21 and the water tank outlet 13, so that water and the foaming agent automatically flow to the reducing tee 3 under the action of self gravity, the diaphragm pump 4 can be prevented from only pumping water with lower viscosity, and the requirement on the lift of the pump can be reduced. The gas-liquid conveying pump 4 is preferably arranged above the reducing tee 3, so that water and foaming agent can be prevented from flowing back into the diaphragm pump 4 under the condition that the diaphragm pump 4 does not work, long-term accumulated liquid pressure of a diaphragm in the diaphragm pump 4 is caused, and the sensitivity is reduced. Further, the bottom of the cavity of the blowing agent storage tank 2 is preferably inclined toward the blowing agent outlet 21 so that the blowing agent in the blowing agent storage tank 2 can be completely used.

Because the diaphragm pump 4 is communicated with the reducing tee 3 through the converging pipeline 6, the increased pressure of the water supply and the foaming agent of the diaphragm pump 4 is close to each other, and the viscosity of the foaming agent is much greater than that of water, so that the water and the foaming agent obtain a better flow ratio and finally obtain a good foaming effect, the inner diameter ratio among the water inlet joint 31, the agent inlet joint 32 and the liquid outlet joint 33 is 1: (2.7-3.2): (3-3.5). The inner diameter ratio of the reducer tee 3 needs to be adjusted according to the viscosity of the foaming agent, and generally, the larger the viscosity of the foaming agent, the larger the inner diameter ratio between the agent inlet joint 32 and the water inlet joint 31. In the embodiment, the included angle between the water inlet joint 31 and the agent inlet joint 32 is 90 degrees, when the diaphragm pump 4 works, water and a foaming agent are primarily mixed at the position of the reducing tee 3 according to a proper proportion, and the mixing degree is high; under the pressure effect of the diaphragm pump 4, the mixed liquid further flows and mixes in the converging pipeline 6, so that the mixed liquid is more fully mixed and is convenient for subsequent foaming. When the mixed liquid is output through the diaphragm pump 4, the air according to the proportion is also pressurized and output by the diaphragm pump 4, and the mixed liquid and the air respectively enter the foaming cavity 51 through the liquid inlet 53 and the air inlet 52 to generate foam.

The foam tube 5 of the present embodiment includes a foam tube main body 5a and a foam nozzle 5b, wherein the foam chamber 51 is provided in the foam tube main body 5a, the air inlet 52 and the liquid inlet 53 are provided at one end of the foam tube main body 5a, and the foam outlet 54 is provided at one end of the foam nozzle 5 b. A buckle piece 55 is arranged at one end of the foaming nozzle 5b far away from the foam outlet 54, a foam outlet channel 551 coaxial with the foam outlet 54 is arranged in the buckle piece 55, and the foam outlet 54 is communicated with the foaming cavity 51 through the foam outlet channel 551; a clamping groove 56 is formed in the foaming tube main body 5a along the circumferential direction, and the clamping piece 55 is clamped with the clamping groove 56. In addition, the foaming nozzle 5b is provided with a boss between the foam outlet 54 and the fastener 55, the boss is provided with a sealing groove 57 corresponding to the end face of the foam cylinder main body 5a, a first sealing ring 58 is provided in the sealing groove 57, and the foam cylinder main body 5a and the foaming nozzle 5b are fastened by screws. The foaming cavity 51 is internally provided with a foaming block 511 at one end close to the air inlet 52, the foaming block 511 is preferably made of foaming stone, the foaming stone is of a loose porous structure, and dense and viscous foam can be formed when air and mixed liquid pass through the foaming cavity 51. The foam cylinder 5 of the present embodiment has a small volume, and particularly, the foam chamber 51 has a smaller volume than that of a similar device for mixing water, a foaming agent and air and generating foam, so that the mixing degree of the mixed liquid and air can be improved, and the foam form is more compact.

In the embodiment, the cross-sectional area of the foaming chamber 51 gradually increases from the end close to the air inlet 52 to the end close to the foam outlet 54, and the foam generated by the air and the mixed liquid passing through the foaming block 511 continues to accumulate and expand in the foaming chamber 51 until the air blown out of the foam outlet 54 by the air in the air inlet 52, so that the blown foam is denser and the continuity of foam generation is good.

More preferably, the ratio of the inner diameters of the air inlet 52 and the liquid inlet 53 is 1: (1.25-1.5), the air blown into the foaming cavity 51 and the air of the mixed liquid flowing into the foaming cavity 51 obtain a flow velocity and a flow rate with a proper proportion, and the blown foam is finer. The air and the mixed liquid enter the foaming cavity 51 at different angles, and the included angle between the air inlet 52 and the liquid inlet 53 is 70-110 degrees, so that the air and the mixed liquid are mixed more fully, and the foam is blown out more easily. The air inlet 52 and the foam outlet 54 are preferably provided coaxially with the foaming chamber 51, and the air blowing resistance of the foam is small so that the air in the air inlet 52 can smoothly blow the foam in the foaming chamber 51 toward the foam outlet 54.

Furthermore, the utility model also provides an electronic toilet that can produce foam combines fig. 7-9, specifically includes core shell 8 and above-mentioned foam generating device, liquid feeding device 7 runs through the core and is fixed with core shell 8, articulated on the core shell 8 have with the movable cover 81 of liquid feeding fill 71 looks adaptation. When liquid needs to be added, the movable cover 81 is lifted upwards, so that the foaming agent can be added to the liquid adding hopper 71, an L-shaped nozzle 82 is arranged in the movement shell 8, one end of the L-shaped nozzle 82 extends into the washing pocket, and the other end of the L-shaped nozzle is connected with the foam outlet 54 through a hose. A water separator 83 is arranged in the case body, and the water inlet 14 of the water tank is connected with the water separator 83 through a water inlet pipeline.

To sum up, implement the utility model discloses following beneficial effect has:

the utility model discloses use the reducing tee bend, through its specific structural design, realize that water and the higher foamer of consistency form mixed liquid through the extraction of same negative pressure suction producing device according to certain proportion, realize the mixture of mixed liquid and air through the gas-liquid delivery pump to produce dense foam through the foaming section of thick bamboo of small volume, its advantage is as follows:

1. the reducing tee joint enables water and the foaming agent with higher viscosity to be extracted and mixed according to a certain ratio through the same negative pressure suction generating device without more negative pressure suction generating devices, and the water and the foaming agent can be preliminarily mixed according to the flow ratio and are fully mixed through a converging pipeline, so that the complexity of a foam generating system is greatly reduced;

2. the production of foam can be realized by using a gas-liquid delivery pump and matching with a small-volume foaming cylinder, so that the production cost of the system is greatly reduced, and the probability of the system having problems is reduced by the operation of a single pump;

3. the small-volume foaming cylinder improves the mixing degree of the mixed liquid and the air, so that the foam is more compact in shape and good in generation continuity;

4. the mixed liquid entering the foaming cavity is in a flowing state, and the air inlet and the foam outlet are coaxially arranged with the foaming cavity, so that the blowing resistance of the foam is small;

5. the external foaming cylinder can be produced in a standardized way, has a simple structure, and solves the problems of complicated structure, high sealing requirement and difficult production and assembly of the foaming cavity of the existing foam generating system;

6. the water storage tank is arranged and integrally formed with the foaming agent storage tank, so that the structure is compact, the foaming water is not influenced by the change of the water pressure of tap water, and the uniformity of foam is better;

7. the liquid feeding device that sets up on the foamer storage box runs through the core, need not to reach the core and carry out any dismouting action when adding the foamer, and the liquid feeding device adopts visual structural design, and convenience of customers uses.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. A foam generating device is characterized by comprising a water storage tank, a foaming agent storage tank, a reducing tee joint, a gas-liquid delivery pump and a foaming cylinder,

2. The foam generating device as claimed in claim 1, wherein the ratio of the inner diameters of the water inlet joint, the agent inlet joint and the liquid outlet joint is 1: (2.7-3.2): (3-3.5).

3. Foam generating device as claimed in claim 1 or 2, characterized in that the ratio of the inner diameters of the gas inlet and the liquid inlet is 1: (1.25-1.5);

4. The foam generating device as claimed in claim 3, wherein the foam cylinder comprises a foam cylinder main body and a foam nozzle, the foam cylinder main body is connected with the foam nozzle, the foam chamber is arranged in the foam cylinder main body, the air inlet and the liquid inlet are arranged at one end of the foam cylinder main body, the foam outlet is arranged at one end of the foam nozzle, and the air inlet and the foam outlet are arranged coaxially with the foam chamber;

5. The foam generating device as claimed in claim 4, wherein a fastening member is provided at an end of the foaming nozzle away from the foam outlet, a foam outlet channel coaxial with the foam outlet is provided in the fastening member, a clamping groove is provided in the main body of the foaming cylinder along the circumferential direction, and the fastening member is clamped with the clamping groove;

6. The foam generating apparatus as set forth in claim 1, wherein said water storage tank and said foaming agent storage tank are integrally formed;

7. The foam generating apparatus as claimed in claim 6, wherein said reducing tee is disposed below the outlet of the foaming agent and the outlet of the water tank;

the gas-liquid delivery pump is arranged above the reducing tee;

8. The foam generator as claimed in claim 6, wherein the blowing agent inlet is provided with a liquid adding device, the liquid adding device comprises a liquid adding bucket and a liquid guide pipe, the liquid guide pipe extends into the blowing agent inlet, the liquid adding bucket is arranged on the top of the liquid guide pipe, the liquid adding bucket is arranged obliquely, and the cross section of the liquid adding bucket is gradually reduced from top to bottom.

9. The foam generating apparatus as recited in claim 1, wherein said gas-liquid transfer pump is a diaphragm pump.

10. An electronic toilet capable of generating foam, comprising a movement housing and the foam generating device of claim 8 or 9,

the liquid feeding device penetrates through the machine core and is fixed with the machine core shell, and a movable cover matched with the liquid feeding hopper is hinged to the machine core shell.