Foaming liquid conveying device, foaming device and closestool

Abstract

When the foaming liquid conveying device, the foaming device and the closestool are used, air flows in a first air path through air outlet of an air pump, and when air flows through a first air section and a second air section, the flowing area of the first air path is reduced, so that the flowing speed of the air is increased, the pressure in the second air section is reduced, and negative pressure is generated; air in the liquid storage box is sucked through the second air section, so that negative pressure is generated in the liquid storage box, the negative pressure space located above the non-special foaming liquid applies downward acting force to the non-special foaming liquid, it is guaranteed that the non-special foaming agent is pressed out through the liquid outlet of the liquid storage box, and air flow in the second air section and the non-special foaming agent flow towards the foaming body; meanwhile, compared with negative pressure pumping treatment conducted on the liquid storage box through air suction of an air pump, the working state of the air pump is outward air outflow, water vapor is prevented from being sucked into the air pump, and the service life of the air pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of foaming device technology, and in particular to a foaming liquid conveying device, a foaming device, and a toilet. Background Technology

[0002] Common foaming devices typically use specialized foaming agents to achieve the best foaming effect. To broaden the application range, non-specialized foaming agents, such as dish soap, can also be used to achieve a foaming effect. However, due to the high viscosity of dish soap, a negative pressure treatment is required in the liquid storage tank to ensure its proper flow. This is usually achieved by using an air pump to create negative pressure in the liquid storage tank. However, if the air pump is in a suction state for an extended period, it will draw moisture from the liquid storage tank into the air pump, affecting its operation and shortening its lifespan. Utility Model Content

[0003] This utility model provides a foaming liquid conveying device, a foaming device, and a toilet, which aims to prevent water vapor from being sucked into the air pump while creating negative pressure in the liquid storage box, thereby extending the service life of the air pump.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A foaming device includes a liquid storage box and an air pump. The air pump's outlet is connected to a first air passage. A portion of the first air passage has a first air section and a second air section connected sequentially along the airflow direction. The radial dimension of the first air section is larger than that of the second air section. The liquid storage box is connected to the second air section through the second air passage. The output end of the first air passage is used to connect to the foaming body.

[0006] Furthermore, the flow area of ​​the second air passage is not greater than the flow area of ​​the second air section.

[0007] Furthermore, a tapered section with a radial dimension that gradually decreases along the airflow direction is provided between the first air section and the second air section. The maximum radial dimension of the tapered section is equal to the radial dimension of the first air section, and the minimum radial dimension of the tapered section is equal to the radial dimension of the second air section.

[0008] Furthermore, a third air section is connected to the end of the second air section furthest from the first air section. The radial dimension of the third air section is larger than that of the second air section, and the output end of the third air section is used to connect to the foaming body.

[0009] Furthermore, a tapered section with a gradually increasing radial dimension is provided between the second and third air sections. The maximum radial dimension of the tapered section is equal to the radial dimension of the third air section, and the minimum radial dimension of the tapered section is equal to the radial dimension of the second air section.

[0010] Furthermore, it also includes an adapter, which includes a first branch pipe, and the first branch pipe is provided with a first air section, a converging section, a second air section, a narrowing section and a third air section in sequence along the air flow direction; the adapter also includes a second branch pipe connected to the second air section.

[0011] Furthermore, it also includes a first connecting pipe and a second connecting pipe. The first connecting pipe is used to connect the air pump and the first branch pipe, and the first connecting pipe and the first branch pipe are connected to form a first air path. The two ends of the second connecting pipe are respectively connected to the liquid storage box and the second branch pipe, and the second connecting pipe and the second branch pipe are connected to form a second air path.

[0012] Furthermore, the outer wall surfaces at both ends of the first branch pipe and the outer wall surface at the end of the second branch pipe away from the first branch pipe are provided with several spaced protrusions.

[0013] Furthermore, the air pump is a single-hole air pump.

[0014] A foaming device includes a foaming body and a foaming liquid delivery device as described above. An air pump is connected to the foaming body through a first air passage to provide air for foaming. A liquid storage box is connected to the foaming body to provide foaming liquid to the foaming body.

[0015] Furthermore, it also includes an airflow overflow prevention device, which includes a first passage and a second passage. The first passage is provided with a connecting hole, and the second passage is connected to the first passage through the connecting hole. The first end of the first passage is connected to the output end of the third air section, and the second end of the first passage is connected to the foaming body. The second passage is provided with a float and a protrusion to prevent the float from falling out of the second passage. The bottom of the second passage is connected to the atmosphere.

[0016] When there is airflow in the first passage, the float rises under the negative pressure generated in the first passage, closing the connecting hole; when there is no airflow in the first passage, the float falls and opens the connecting hole.

[0017] A toilet includes a toilet body, the toilet body being equipped with a foaming device as described above, the foam outlet of the foaming device facing the toilet bowl of the toilet body.

[0018] The beneficial effects of this utility model are:

[0019] 1. The foaming liquid conveying device proposed in this utility model, in use, uses an air pump to generate gas flow in the first air path. When the gas flows through the first and second air sections, the flow area of ​​the first air path decreases, resulting in an increase in gas velocity. This causes the pressure in the second air section to decrease, thus generating a negative pressure. The second air section draws air into the liquid storage box, creating a negative pressure inside the liquid storage box. The negative pressure space above the non-dedicated foaming liquid exerts a downward force on the non-dedicated foaming liquid, ensuring that the non-dedicated foaming agent is forced out through the liquid outlet of the liquid storage box. The airflow in the second air section and the non-dedicated foaming agent flow to the foaming body respectively. At the same time, compared to using an air pump to draw air into the liquid storage box to create a negative pressure, the working state of this air pump is to expel air, avoiding the intake of water vapor into the air pump and extending its service life.

[0020] 2. The foaming liquid conveying device proposed in this utility model has a flow area of ​​the second air path that is not greater than the flow area of ​​the second air section, so as to ensure that negative pressure can be generated in the second air section to draw air from the liquid storage box.

[0021] 3. The foaming liquid conveying device proposed in this utility model includes a converging section and a contracting section, which are used to guide the uniform contraction and expansion during the air flow process, respectively, to avoid vortices caused by abrupt changes in radial dimensions between the first air section, the second air section and the third air section, and to reduce the loss of flow velocity during the air flow process.

[0022] 4. The foaming liquid conveying device proposed in this utility model has several spaced protrusions on the outer wall surfaces of both ends of the first branch pipe and the outer wall surface of the second branch pipe away from the first branch pipe, which increases the connection stability between the connecting pipe and the first and second branch pipes.

[0023] 5. The foaming liquid conveying device proposed in this utility model can realize the negative pressure treatment of the liquid storage box and the air supply to the foaming body by means of a single-hole air pump. Compared with the double-hole air pump used in the prior art, the single-hole air pump does not require customization, has higher parts adaptability, and lower production cost.

[0024] 6. The foaming device proposed in this utility model includes an airflow anti-overflow device. When using a non-dedicated foaming agent, when the air pump is started to draw air from the liquid storage box, the float closes the connecting hole under the negative pressure generated in the first passage to prevent airflow leakage and affect the foaming effect. When using a dedicated foaming agent, the connecting hole is opened so that the liquid storage box is connected to the atmosphere. The dedicated foaming agent automatically flows to the foaming body under atmospheric pressure, so that the foaming device can select to use a non-dedicated foaming agent or a dedicated foaming agent according to the actual situation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a foaming device in the prior art;

[0027] Figure 2 This is a schematic diagram of the foaming and conveying device of this utility model;

[0028] Figure 3 This is a schematic diagram of the adapter of the foaming conveying device of this utility model;

[0029] Figure 4 This is a schematic diagram of the foaming device of this utility model;

[0030] Figure 5 This is a schematic diagram of the airflow overflow prevention device of the foaming apparatus of this utility model;

[0031] Figure 6 This is a schematic diagram of the toilet according to the present invention;

[0032] In the diagram, 10' is the liquid storage box; 20' is the dual-hole air pump; 10 is the liquid storage box; 20 is the air pump; 301 is the first air section; 302 is the tapering section; 303 is the second air section; 304 is the tapering section; 305 is the third air section; 40 is the adapter; 401 is the first branch pipe; 402 is the second branch pipe; 501 is the first connecting pipe; 502 is the second connecting pipe; 60 is the protrusion; 70 is the foaming body; 80 is the airflow overflow prevention device; 801 is the first passage; 8011 is the connecting hole; 802 is the second passage; 8021 is the boss; 803 is the float; 804 is the return spring; 90 is the toilet body; 901 is the urinal. Detailed Implementation

[0033] Example 1

[0034] The following is combined Figures 1 to 3 This embodiment will be described.

[0035] In existing technologies, non-dedicated foaming agents are inferior to dedicated foaming agents in both viscosity and foaming performance. Therefore, a dual-hole air pump 20' is added to the foaming system. This serves two purposes: firstly, to increase the negative pressure in the liquid storage box 10', and secondly, to provide power for the rotary foaming process. Figure 1As shown. However, such a system may pose a hidden danger if used for a long time. The dual-hole air pump 20' draws negative pressure into the liquid storage box 10' so that the non-dedicated foaming liquid can flow out from the outlet of the liquid storage box 10'. The long-term suction state will draw water vapor from the liquid storage box 10' into the dual-hole air pump 20', which will affect the working condition and even the life of the dual-hole air pump 20'.

[0036] Figure 2 and Figure 3 This embodiment illustrates a foaming liquid delivery device, including a liquid storage box 10 and an air pump 20. The air outlet of the air pump 20 is connected to a first air passage. A portion of the first air passage is provided with a first air section 301 and a second air section 303 connected sequentially along the air flow direction. The radial dimension of the first air section 301 is larger than the radial dimension of the second air section 303. The liquid storage box 10 is connected to the second air section 303 through the second air passage. Because the radial dimension of the first gas section 301 is larger than that of the second gas section 303, the flow area of ​​the first gas path becomes smaller when the gas flows through the first gas section 301 and the second gas section 303, resulting in an increase in gas velocity. This causes the pressure in the second gas section 303 to decrease, thus generating a negative pressure. The second gas section 303 draws air from the liquid storage box 10, creating a negative pressure inside the liquid storage box 10. The negative pressure space above the non-dedicated foaming liquid exerts a downward force on the non-dedicated foaming liquid, ensuring that the non-dedicated foaming agent is expelled through the outlet of the liquid storage box 10. The airflow in the second gas section 303 and the non-dedicated foaming agent flow to the foaming body 70 respectively. At the same time, compared to the negative pressure treatment of the liquid storage box 10 by drawing air through the dual-hole air pump 20', the working state of the air pump 20 is to expel air, avoiding the intake of water vapor into the air pump 20 and extending its service life.

[0037] In this embodiment, the air pump 20 is a single-hole air pump. Compared with the dual-hole air pump used in the prior art, the single-hole air pump can achieve negative pressure treatment of the liquid storage box 10 and air delivery to the foaming body 70. Moreover, the single-hole air pump does not require customization, has high component adaptability, and low cost.

[0038] In this embodiment, the flow area of ​​the second air passage is not greater than the flow area of ​​the second air section 303, ensuring that the negative pressure generated in the second air section 303 is sufficient to draw air from the liquid storage box 10, so that non-dedicated foaming agents, such as detergents, can be squeezed out from the liquid outlet of the liquid storage box 10.

[0039] In this embodiment, as Figure 3As shown, the end of the second air section 303 furthest from the first air section 301 is connected to a third air section 305. The radial dimension of the third air section 305 is larger than that of the second air section 303, and the output end of the third air section 305 is used to connect to the foaming body 70. Between the first air section 301 and the second air section 303, there is a tapered section 302 whose radial dimension gradually decreases along the airflow direction. The maximum radial dimension of the tapered section 302 is equal to the radial dimension of the first air section 301, and the minimum radial dimension of the tapered section 302 is equal to the radial dimension of the second air section 303. Furthermore, between the second air section 303 and the third air section 305, there is a tapered section 304 whose radial dimension gradually increases along the airflow direction. The maximum radial dimension of the tapered section 304 is equal to the radial dimension of the third air section 305, and the minimum radial dimension of the tapered section 304 is equal to the radial dimension of the second air section 303. The contraction section 302 is used to guide the airflow to contract uniformly during the flow process, increase the airflow velocity in the second air section 303, and reduce the pressure to generate negative pressure; the expansion section 304 is used to guide the airflow to expand uniformly during the flow process, reduce the airflow velocity in the third air section 305, restore the pressure, and at the same time ensure that the radial dimensions of the first air section 301 and the third air section 305 are the same, avoid vortices caused by abrupt changes in radial dimensions between the first air section 301, the second air section 303 and the third air section 305, and reduce the loss of airflow velocity during the flow process.

[0040] In this embodiment, as Figure 3 As shown, it also includes an adapter 40, which includes a first branch pipe 401 and a second branch pipe 402 connected to the first branch pipe 401. The first branch pipe 401 and the second branch pipe 402 can be integrally formed or separately formed. The shape formed by the interconnection of the first branch pipe 401 and the second branch pipe 402 is T-shaped, but not limited to this. Specifically, the adapter 40 includes a first branch pipe 401, which contains a first air section 301, a tapering section 302, a second air section 303, a converging section 304, and a third air section 305 arranged sequentially. The internal channel of the second branch pipe 402 is connected to the second air section 303. Furthermore, it also includes a first connecting pipe 501 and a second connecting pipe 502. The first connecting pipe 501 is used to connect the air pump 20 and the first branch pipe 401, and the first connecting pipe 501 and the first branch pipe 401 are connected to form a first air passage. The two ends of the second connecting pipe 502 are respectively connected to the liquid storage box 10 and the second branch pipe 402, and the second connecting pipe 502 and the second branch pipe 402 are connected to form a second air passage. Furthermore, the outer wall surfaces of both ends of the first branch pipe 401 are provided with a plurality of spaced protrusions 60, that is, the outer sides of the first air section 301 and the third air section 305 are both provided with protrusions 60, and the outer wall surface of the second branch pipe 402 away from the first branch pipe 401 is provided with a plurality of spaced protrusions 60. The protrusions 60 can increase the connection stability between the connecting pipe and the first branch pipe 401 and the second branch pipe 402.

[0041] The working principle of the foaming liquid delivery device in this embodiment is as follows:

[0042] The gas pumped by the air pump 20 is pumped into the first connecting pipe 501 and then into the first branch pipe 401. The flow area of ​​the first air path becomes smaller, which leads to an increase in gas velocity. This causes the pressure in the second air section 303 to decrease, thereby generating a negative pressure. This negative pressure is then drawn into the liquid storage box 10 through the second air path, creating a negative pressure in the space above the non-dedicated foaming agent. The negative pressure space exerts a downward force on the non-dedicated foaming liquid, ensuring that the non-dedicated foaming agent is expelled through the liquid outlet of the liquid storage box 10 and flows to the foaming body 70. The airflow in the second air section 303 flows to the foaming body 70 through the third air section 305.

[0043] Example 2

[0044] like Figure 4 As shown, this embodiment provides a foaming device, including a foaming body 70 and the aforementioned foaming liquid delivery device. The air pump 20 and the air extraction port of the liquid storage box 10 are connected to the foaming body 70 via an adapter 40. Specifically, the adapter 40 includes a first branch pipe 401 and a second branch pipe 402 connected to the first branch pipe 401. The first branch pipe 401 and the second branch pipe 402 are connected to each other in a T-shape, but are not limited thereto. The air pump 20 is connected to the foaming body 70 via the first branch pipe 401, and the air extraction port of the liquid storage box 10 is connected to the foaming body 70 via the second branch pipe 402 and the first branch pipe 401 in sequence. The airflow generated by the air pump 20 and the airflow extracted from the liquid storage box 10 converge in the third air section 305, thereby providing air for foaming in the foaming body 70, and the liquid outlet of the liquid storage box 10 is connected to the foaming body 70, providing foaming liquid to the foaming body 70.

[0045] like Figure 5 As shown, an airflow overflow prevention device 80 is also provided between the third air section 305 and the foaming body 70. The airflow overflow prevention device 80 includes a first passage 801 and a second passage 802. The first passage 801 is provided with a connecting hole 8011. The second passage 802 is connected to the first passage 801 through the connecting hole 8011. The first end of the first passage 801 is connected to the output end of the third air section 305, and the second end of the first passage 801 is connected to the foaming body 70. A float 803 and a protrusion 8021 that restricts the float 803 from falling out of the second passage 802 are provided in the second passage 802. The bottom of the second passage 802 is connected to the atmosphere.

[0046] The first passage 801 and the second passage 802 are connected separately to facilitate the installation of the float 803. Alternatively, the first passage 801 and the second passage 802 can be integrally formed. In this case, the boss 8021 is separately connected to the second passage 802. After the float 803 is installed in the second passage 802, the boss 8021 is then connected to the second passage 802. The installation relationship of the first passage 801, the second passage 802, and the float 803 includes, but is not limited to, this.

[0047] like Figure 5 As shown, a return spring 804 is provided in the second passage 802 to push the float 803 to open the connecting hole 8011. When the negative pressure in the first passage 801 disappears, the elastic force generated by the return spring 804 pushes the float 803 to open the connecting hole 8011, preventing the float 803 from getting stuck in the connecting hole 8011 and not falling off by itself, which would prevent the liquid storage box 10 from communicating with the atmosphere and cause the special foaming agent in the liquid storage box 10 to not flow out automatically under atmospheric pressure.

[0048] When there is airflow in the first passage 801, that is, when the air pump 20 is started, the float 803 rises under the negative pressure generated in the first passage 801, closing the connecting hole 8011; when there is no airflow in the first passage 801, that is, when the air pump 20 is turned off, the float 803 falls, opening the connecting hole 8011.

[0049] When the user uses a non-dedicated foaming agent for foaming, the airflow from the third air section 305 enters the first passage 801, causing a negative pressure to be generated in the first passage 801. Under the action of the negative pressure, the float 803 rises and blocks the connecting hole 8011, preventing the airflow from overflowing into the second passage 802, ensuring the airflow rate delivered to the foaming body 70, and ensuring the foaming effect.

[0050] When the user uses a special foaming agent for foaming, the liquid storage box 10 is connected to the atmospheric environment through the second air section 303, the third air section 305, the first passage 801 and the second passage 802. Since the special foaming agent has a low viscosity, it can flow from the outlet to the foaming body 70 under atmospheric pressure. There is no need for the air pump 20 to draw air from the liquid storage box 10. When foaming is needed, the air pump 20 is started and the float ball 803 closes the connecting hole 8011. The subsequent foaming principle is as described above and will not be repeated.

[0051] It can be seen that by setting the airflow overflow prevention device 80, the foaming device can choose to use non-special foaming agent or special foaming agent according to the actual situation, thus expanding its applicable range.

[0052] The working principle of the foaming device provided in this embodiment is as follows:

[0053] The gas pumped by the air pump 20 enters the first connecting pipe 501 and then the first branch pipe 401. The flow area of ​​the first air path becomes smaller, resulting in an increase in gas velocity. This causes the pressure in the second air section 303 to decrease, thus creating a negative pressure. The second air section 303 draws air from the liquid storage box 10, creating a negative pressure in the space above the non-dedicated foaming agent. This negative pressure space exerts a downward force on the non-dedicated foaming liquid, causing the foaming liquid to be forced out from the outlet of the liquid storage box 10 and flow into the liquid storage box 10. At the same time, the output end of the third air section 305 is connected in sequence to the airflow anti-overflow device 80 and the foaming body 70, pumping the air for foaming into the foaming body 70. The foaming liquid in the liquid storage box 10 flows into the foaming body 70, allowing the air and foaming agent to mix and foam.

[0054] Example 3

[0055] like Figure 5 As shown, this embodiment provides a toilet, including a toilet body 90, in which the above-mentioned foaming device is installed in the mounting cavity of the toilet body 90, and the foam outlet of the foaming body 70 faces the toilet bowl 901 of the toilet body 90.

[0056] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A foaming liquid delivery device, comprising a liquid storage box and an air pump, characterized in that, The air pump's outlet is connected to a first air path. A portion of the first air path has a first air section and a second air section connected sequentially along the airflow direction. The radial dimension of the first air section is larger than that of the second air section. The liquid storage box is connected to the second air section through the second air path. The output end of the first air path is used to connect to the foaming body.

2. The foaming liquid conveying device as described in claim 1, characterized in that, The flow area of ​​the second air passage is not greater than the flow area of ​​the second air section.

3. A foaming liquid conveying device as described in claim 1 or 2, characterized in that, Between the first air section and the second air section, there is a tapered section whose radial dimension gradually decreases along the airflow direction. The maximum radial dimension of the tapered section is equal to the radial dimension of the first air section, and the minimum radial dimension of the tapered section is equal to the radial dimension of the second air section.

4. The foaming liquid conveying device as described in claim 3, characterized in that, The end of the second air section away from the first air section is also connected to a third air section. The radial dimension of the third air section is larger than that of the second air section, and the output end of the third air section is used to connect to the foaming body.

5. The foaming liquid conveying device as described in claim 4, characterized in that, Between the second and third air sections, there is a gradually increasing radial section whose radial dimension gradually increases along the airflow direction. The maximum radial dimension of the gradually increasing section is equal to the radial dimension of the third air section, and the minimum radial dimension of the gradually increasing section is equal to the radial dimension of the second air section.

6. The foaming liquid conveying device as described in claim 5, characterized in that, It also includes an adapter, which includes a first branch pipe, in which a first air section, a converging section, a second air section, a narrowing section and a third air section are arranged sequentially along the air flow direction; the adapter also includes a second branch pipe connected to the second air section.

7. The foaming liquid conveying device as described in claim 6, characterized in that, It also includes a first connecting pipe and a second connecting pipe. The first connecting pipe is used to connect the air pump and the first branch pipe. The first connecting pipe and the first branch pipe are connected to form the first air path. The two ends of the second connecting pipe are respectively connected to the liquid storage box and the second branch pipe. The second connecting pipe and the second branch pipe are connected to form the second air path.

8. The foaming liquid conveying device as described in claim 6, characterized in that, The outer wall surfaces at both ends of the first branch pipe and the outer wall surface at the end of the second branch pipe away from the first branch pipe are provided with a number of spaced protrusions.

9. A foaming liquid conveying device according to any one of claims 4-8, characterized in that, The air pump is a single-hole air pump.

10. A foaming device, comprising a foaming body, characterized in that, It also includes a foaming liquid delivery device as described in any one of claims 4-9, wherein the air pump is connected to the foaming body through the first air passage to provide the foaming body with air for foaming; and the liquid storage box is connected to the foaming body to provide the foaming body with foaming liquid.

11. A foaming device as described in claim 10, characterized in that, It also includes an airflow overflow prevention device, which includes a first passage and a second passage. The first passage is provided with a connecting hole, and the second passage is connected to the first passage through the connecting hole. The first end of the first passage is connected to the output end of the third air section, and the second end of the first passage is connected to the foaming body. The second passage is provided with a float and a protrusion that restricts the float from falling out of the second passage. The bottom of the second passage is connected to the atmosphere. When there is airflow in the first passage, the float rises under the negative pressure generated in the first passage, closing the connecting hole; when there is no airflow in the first passage, the float falls and opens the connecting hole.

12. A toilet, comprising a toilet body, characterized in that, The toilet body is equipped with a foaming device as described in claim 10 or 11, with the foam outlet of the foaming body facing the toilet bowl of the toilet body.

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