Toilet cover and foam generator thereof

Abstract

The utility model relates to the technical field of intelligent closestools, in particular to a closestool cover and a foam generator thereof, which comprise a foam mixing bin, a generator connector and a foam nozzle. A first end of the foam mixing bin is provided with an input port, an output port and a foam liquid injection port, and a second end opposite to the first end is connected with the generator connector; a rotatable stirring blade is arranged in the foam mixing bin close to the first end; an injection cavity and a spraying cavity are formed in the generator connector, the injection cavity is communicated with the foam mixing bin, the injection cavity is communicated with the spraying cavity through a spraying hole, and the cross section area of the spraying hole is smaller than that of the injection cavity and that of the spraying cavity; an air inlet is formed in the side face of the generator connector, the air inlet is communicated with the spraying cavity, and the end of the spraying cavity is connected with the foam spraying head. The foam generator is small in size and can be integrated on the toilet cover, and the maintenance difficulty of the foam generator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent toilets, in particular to a toilet seat cover and a foam generator thereof. Background Art

[0002] In the prior art, a foam generator is integrated in a toilet bowl, and foam is generated by the foam generator to achieve the effect of preventing odor. However, due to the large volume of the existing foam generators, most of them are integrated at the all-in-one machine of the intelligent toilet. This increases the maintenance difficulty of the foam generator, and the foam generator is prone to blockage after long-term use and needs to be cleaned and maintained. However, when the foam generator is integrated into the toilet seat cover, due to limited space, only an external installation method can be selected. On the one hand, it affects the overall appearance of the toilet, and on the other hand, due to the appearance, it is prone to falling off after long-term use. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art. The utility model provides a toilet seat cover and a foam generator thereof, which are small in volume, can be integrated into the toilet seat cover, and have good overall appearance.

[0004] In order to solve the above problems, the utility model provides a foam generator for a toilet seat cover, which comprises a foam mixing chamber, a generator connector and a foam nozzle;

[0005] An input port, an output port and a foam liquid injection port are arranged at the first end of the foam mixing chamber, and the generator connector is connected to the second end opposite to the first end; a rotatable stirring blade is arranged near the first end in the foam mixing chamber;

[0006] An injection chamber and a spray chamber are arranged in the generator connector, the injection chamber is communicated with the foam mixing chamber, the injection chamber is communicated with the spray chamber through a spray hole, and the cross-sectional area of the spray hole is smaller than the cross-sectional areas of the injection chamber and the spray chamber; an air inlet is arranged on the side surface of the generator connector, the air inlet is communicated with the spray chamber, and the end of the spray chamber is connected with the foam nozzle.

[0007] As an improvement of the above technical solution, a buffer chamber is further arranged at the end of the foam mixing chamber, the buffer chamber is communicated with the foam mixing chamber and the injection chamber respectively, a buffer plug is slidably connected in the buffer chamber, an elastic member is arranged between the buffer plug and the injection port of the injection chamber, and one end of the buffer plug far away from the injection chamber can be used to close the liquid inlet of the buffer chamber.

[0008] As an improvement of the above technical solution, one end of the buffer chamber is provided with a buffer chamber inlet communicating with the foam mixing chamber, and the other end is provided with a buffer chamber outlet communicating with the injection chamber. The inner wall of the buffer chamber is provided with a plurality of buffer plug guide rails arranged from the buffer chamber inlet to the buffer chamber outlet;

[0009] The buffer plug includes a plug head and a plug body. The plug head is provided at one end of the plug body close to the buffer chamber inlet. The plug head is slidably connected with the buffer plug guide rail. A buffer spring is arranged between the plug head and the buffer chamber outlet. The plug head can be used to close the buffer chamber inlet.

[0010] As an improvement of the above technical solution, the included angle between the inner wall of the end of the injection chamber far from the injection chamber and the inner wall of the injection hole is α, and 10° ≤ α ≤ 20°.

[0011] As an improvement of the above technical solution, a foam pump is further included, and the air inlet is communicated with the foam pump.

[0012] As an improvement of the above technical solution, the cross-sectional area of the injection hole increases in the direction from the injection chamber to the injection chamber.

[0013] As an improvement of the above technical solution, at least one layer of foam net is provided at the end of the injection chamber. The mesh number of the foam net is 40 - 200 meshes, or multiple layers of sintered stainless steel wire mesh air filter sheets, or copper powder sintered microporous filter sheets.

[0014] As an improvement of the above technical solution, at least one first sealing ring is provided between the generator connector and the foam mixing chamber, and at least one second sealing ring is provided at the connection between the generator connector and the foam nozzle.

[0015] As an improvement of the above technical solution, a bayonet spring piece is provided on the outer wall of one end of the generator connector close to the foam nozzle, and the foam nozzle is provided with a buckle piece adapted to the bayonet spring piece. The bayonet spring piece can be engaged with the buckle piece.

[0016] Correspondingly, the present invention further provides a toilet seat cover, including the foam generator as described above. The foam nozzle includes a foam nozzle connection part, and one end of the foam nozzle connection part far from the generator connector is bent at a predetermined angle to form a foam nozzle spout part.

[0017] Implementing the present invention has the following beneficial effects:

[0018] The foam generator of the present utility model includes a foam mixing chamber, a generator connector, and a foam nozzle. One end of the foam mixing chamber is provided with a water input port, a foam liquid injection port, and a mixed liquid output port. These interfaces can be respectively connected to an external water distribution valve, a peristaltic pump, and a foam pump. The water input port quantitatively conveys water, and the foam liquid injection port quantitatively conveys foaming liquid. The two are stirred evenly by the stirring blades in the foam mixing chamber, then pumped out by the foam pump connected to the output port, and fine foam is generated and sent to the air inlet of the generator connector and into the injection chamber. At the same time, when the input liquid is greater than the output liquid and the foam mixed liquid in the foam mixing chamber is full, since there is an injection hole with an increasing cross-sectional area between the injection chamber and the injection cavity, under the action of pressure, the foam liquid accelerates and diverges towards the injection chamber at the injection hole, and at the same time mixes with the fine foam entering through the air inlet, flows towards the foam nozzle, and generates a foam liquid flow with uniform particles. Compared with the prior art, the generation and injection of foam are both integrated in the foam mixing chamber, effectively reducing the volume of the foam generator, enabling it to be integrated into the toilet seat cover, and ensuring the overall appearance integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of the first embodiment of the foam generator of the present utility model;

[0020] Figure 2 is a cross-sectional view of the first embodiment of the foam generator of the present utility model;

[0021] Figure 3 is an exploded view of the second embodiment of the foam generator of the present utility model;

[0022] Figure 4 is a cross-sectional view of the second embodiment of the foam generator of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] See Figure 1 and Figure 2 As shown, Embodiment 1 of the present utility model provides a foam generator for a toilet seat cover, which includes a foam mixing chamber 1, a generator connector 2, and a foam nozzle 3.

[0025] In the embodiment of the present utility model, by improving the structures of the foam mixing chamber and the generator connector, the foaming of the foaming liquid and the injection of the foam liquid can be completed.

[0026] Specifically, the first end of the foam mixing chamber 1 is provided with an input port 11, an output port 12, and a foam liquid injection port 13. The second end opposite to the first end is connected to the generator connector 2. A rotatable stirring blade 14 is provided near the first end in the foam mixing chamber 1;

[0027] The generator connector 2 is provided with an injection chamber 21 and a spray chamber 22. The injection chamber 21 communicates with the foam mixing chamber 1. The injection chamber 21 and the spray chamber 22 are communicated through a spray hole 23. The cross-sectional area of the spray hole 23 is smaller than the cross-sectional areas of the injection chamber 21 and the spray chamber 22. An air inlet 24 is provided on the side of the generator connector 2. The air inlet 24 communicates with the spray chamber 22. The end of the spray chamber 22 is connected to the foam nozzle 3.

[0028] It should be noted that during operation, the foam liquid inlet 13 of the foam mixing chamber 1 is connected to a peristaltic pump. The peristaltic pump regularly and quantitatively inputs the foaming liquid into the foam liquid mixing chamber 1. On the other path, water passes through a distribution valve and regularly and quantitatively injects pressurized water from the input port 11 into the foam liquid mixing chamber 1. When the water flow is injected, it will drive the stirring blade 14 to rotate and stir, so that the foam liquid and water are stirred evenly. The mixed foam liquid flows out from the output port 12. The foam pump converts the foam liquid into fine foam and flows into the air inlet 24 of the generator connector 2 and enters the spray chamber 22. When the foam mixing liquid in the foam mixing chamber 1 is full, the foam liquid flows into the injection chamber 21 and then sprays out from the spray hole 23, mixes with the foam at the air inlet 24, and then flows out from the outlet of the foam nozzle 3 when the foam is full.

[0029] The foam generator of the present utility model includes a foam mixing chamber 1, a generator connector 2 and a foam nozzle 3. One end of the foam mixing chamber 1 is provided with an input port 11, a foam liquid inlet 13 and an output port 12. The above interfaces can be respectively connected to an external peristaltic pump and a foam pump. The input port 11 quantitatively conveys water, and the foam liquid inlet 13 quantitatively conveys the foaming liquid, and is stirred evenly by the stirring blade 14 in the foam mixing chamber 1, and then is pumped out by the foam pump connected to the output port 12. Then the foam liquid is converted into foam by the foam pump and flows into the injection port 24 of the generator connector 2 and is sprayed into the spray chamber. At the same time, when the foam mixing liquid in the foam mixing chamber 1 is full, the foam liquid flows into the injection chamber 21 and sprays out from the hole of the injection port 23, mixes with the foam at the injection port 24. Since a spray hole 23 with an increasing cross-sectional area is provided between the injection chamber 21 and the spray chamber 22, under the action of pressure, the foam liquid diverges and sprays towards the spray chamber 22 at the spray hole 23, and drives the foam liquid to flow towards the foam nozzle 3 under the action of the positive air pressure at the injection port 24. Compared with the prior art, the generation and spraying of foam are both integrated in the foam mixing chamber 1, effectively reducing the volume of the foam generator, enabling it to be integrated at the toilet seat, and ensuring the overall appearance integrity.

[0030] In the second embodiment of the present utility model, a buffer chamber 15 is further provided at the end of the foam mixing chamber 1. The buffer chamber 15 is respectively communicated with the foam mixing chamber 1 and the injection chamber 21. A buffer plug 4 is slidably connected in the buffer chamber 15. An elastic member 5 is provided between the buffer plug 4 and the injection port of the injection chamber 21. One end of the buffer plug 4 away from the injection chamber 21 can be used to close the liquid inlet of the buffer chamber 15.

[0031] In the second embodiment, only when a certain pressure is formed by the accumulation of foam liquid at the end of the foam mixing chamber 1 can the buffer plug 4 be pushed to move, so as to release the closure of the liquid inlet of the buffer chamber 15, so that the foam liquid can fill the buffer chamber 15 and then enter the injection chamber 21 from the buffer chamber 15. In this way, the foam liquid can enter the injection chamber 21 at a predetermined pressure, and then the injection holes 23 can inject the foam liquid at a predetermined injection pressure.

[0032] Preferably, one end of the buffer chamber 15 is provided with a buffer chamber inlet 151 communicated with the foam mixing chamber 1, and the other end is provided with a buffer chamber outlet 152 communicated with the injection chamber 21. The inner wall of the buffer chamber 15 is provided with a plurality of buffer plug guide rails arranged from the buffer chamber inlet 151 to the buffer chamber outlet 152;

[0033] The buffer plug 4 includes a plug head 42 and a plug body 41. The plug head 42 is provided at one end of the plug body 41 close to the buffer chamber inlet 151. The plug head 42 is slidably connected with the buffer plug guide rail. A buffer spring 5 is provided between the plug head 42 and the buffer chamber outlet 152. The plug head 42 can be used to close the buffer chamber inlet 151.

[0034] More preferably, in the above two embodiments, the included angle between the inner wall of the end of the injection chamber 22 away from the injection chamber and the inner wall of the injection hole 23 is α, and 10° ≤ α ≤ 20°. When α is less than 10°, the injection of the foam liquid from the injection hole 23 is too concentrated, and the foam of the foam liquid will decrease; when α is greater than 20°, the injection of the foam liquid is too diffused and easily adheres to the inner wall of the injection chamber 22, affecting the injection effect.

[0035] Preferably, in the above two embodiments, a foam pump is further included, and the air inlet 24 is communicated with the foam pump. It should be noted that the foam pump can transport the foam liquid flowing out from the output port 12 into the air inlet 24 to mix with the foam ejected from the injection hole 23, so as to increase the foam production ratio and make the foam particles uniform. Among them, the air inlet 24 can also be communicated with air to replace the connection between the air inlet 14 and the foam pump. Canceling the foam pump can reduce the production cost, but the foam production effect is slightly worse.

[0036] Preferably, in the above two embodiments, the cross-sectional area of the injection chamber 22 increases in the direction from the injection chamber 21 to the injection chamber 22. This is beneficial to increasing the injection pressure during the injection of the injection holes 23 and improving the injection speed of the foam liquid.

[0037] Preferably, at least one layer of foam net 6 is provided at the end of the injection chamber 22. Providing multiple layers of foam net 6 can play a sieving role and make the foam sprayed by the foam nozzle 3 uniform. More preferably, the mesh number of the foam net 6 is 40 to 200 meshes.

[0038] More preferably, the foam net is a flat net, including but not limited to multiple layers of wire mesh sintered air filter sheets or copper powder sintered microporous filter sheets, making the foam finer. The preferred specifications of the foam net are: the diameter ranges from 10 to 15 mm and the thickness is 1 to 2 mm.

[0039] Preferably, at least one first sealing ring 26 is provided between the generator connector 2 and the foam mixing chamber 1, and at least one second sealing ring 27 is provided at the connection between the generator connector 2 and the foam nozzle 3.

[0040] Preferably, a bayonet spring piece 25 is provided on the outer wall of one end of the generator connector 2 close to the foam nozzle 3, and a buckle member 33 adapted to the bayonet spring piece 25 is provided on the foam nozzle 3, and the bayonet spring piece 25 can be engaged with the buckle member 33. The foam nozzle 3 and the generator connector 2 are fixedly connected in a buckling form, which is convenient for the foam generator to replace parts.

[0041] An embodiment of the present invention further provides a toilet seat cover, including the above-mentioned foam generator. The foam nozzle 3 includes a foam nozzle connecting portion 31, and one end of the foam nozzle connecting portion 31 away from the generator connector 2 is bent at a predetermined angle to form a foam nozzle spout portion 32.

[0042] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A foam generator for a toilet seat, characterized in that: It includes a foam mixing chamber, a generator connection head and a foam spray head; The first end of the foam mixing chamber is provided with an input port, an output port and a foam liquid injection port, and the second end opposite to the first end is connected with the generator connector; a rotatable stirring blade is provided in the foam mixing chamber near the first end; An injection chamber and an injection chamber are provided in the generator connecting head, the injection chamber is connected with the foam mixing chamber, the injection chamber and the injection chamber are connected with each other through an injection hole, and the cross-sectional area of ​​the injection hole is smaller than the cross-sectional area of ​​the injection chamber and the injection chamber; an air inlet is provided on the side of the generator connecting head, the air inlet is connected with the injection chamber, and the end of the injection chamber is connected with the foam nozzle.

2. The foam generator according to claim 1, characterized in that A buffer cavity is also provided at the end of the foam mixing chamber, and the buffer cavity is communicated with the foam mixing chamber and the injection cavity respectively. A buffer plug is slidably connected in the buffer cavity, and an elastic member is provided between the buffer plug and the injection port of the injection cavity. The end of the buffer plug away from the injection cavity can be used to close the liquid inlet of the buffer cavity.

3. The foam generator according to claim 2, characterized in that One end of the buffer cavity is provided with a buffer cavity inlet communicating with the foam mixing chamber, and the other end is provided with a buffer cavity outlet communicating with the injection cavity, and the inner wall of the buffer cavity is provided with a plurality of buffer plug guide rails arranged from the buffer cavity inlet to the buffer cavity outlet; The buffer plug includes a plug head and a plug body. The plug head is provided at one end of the plug body close to the buffer cavity entrance. The plug head is slidably connected to the buffer plug guide rail. A buffer spring is provided between the plug head and the buffer cavity outlet. The plug head can be used to close the buffer cavity entrance.

4. The foam generator according to any one of claims 1 to 3, characterized in that: The included angle between the inner wall of the end of the injection cavity away from the injection cavity and the inner wall of the injection hole is α, and 10°≤α≤20°.

5. The foam generator according to any one of claims 1 to 3, characterized in that: A foam pump is also included, and the air inlet is communicated with the foam pump.

6. The foam generator according to any one of claims 1 to 3, characterized in that: The cross-sectional area of ​​the injection hole increases gradually from the injection chamber to the injection chamber.

7. The foam generator according to any one of claims 1 to 3, characterized in that: At least one layer of foam net is arranged at the end of the injection cavity, and the mesh number of the foam net is 40-200 meshes; or a multi-layer stainless steel wire mesh sintered air filter, or a copper powder sintered microporous filter.

8. The foam generator according to claim 1, characterized in that The generator connecting head and the foam mixing chamber are provided with at least one first sealing ring, and the connection between the generator connecting head and the foam nozzle is provided with at least one second sealing ring.

9. The foam generator according to claim 1, characterized in that A bayonet spring piece is provided on the outer wall of one end of the generator connector close to the foam nozzle, and the foam nozzle is provided with a buckle piece matched with the bayonet spring piece, and the bayonet spring piece can be engaged with the buckle piece.

10. A toilet seat cover, characterized in that: It comprises a foam generator as described in any one of claims 1 to 9, wherein the foam nozzle comprises a foam nozzle connection part, and one end of the foam nozzle connection part away from the generator connection head is bent at a predetermined angle to form a foam nozzle nozzle nozzle part.

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