Water inlet conversion device

Abstract

The utility model relates to a water inlet conversion device which comprises a bottle mouth connection cover, the bottle mouth connection cover is provided with a large bottle mouth connection cavity and a small bottle mouth connection cavity, and the large bottle mouth connection cavity is communicated with the small bottle mouth connection cavity. The bottle neck connection cover is provided with a water outlet channel, the water outlet channel is communicated with the small bottle opening connection cavity, and a one-way valve is arranged in the water outlet channel. The bottle mouth connection cover is provided with an air inlet channel, the air inlet channel is communicated with the small bottle mouth connection cavity, and an air inlet valve is arranged in the air inlet channel; the air inlet valve is a silica gel body, and the silica gel body is provided with an air port. According to the device, the large bottle opening connection cavity and the small bottle opening connection cavity are arranged, so that the device can adapt to bottle mouths of different specifications, the universality is improved, a user does not need to purchase a plurality of conversion devices for bottles of different sizes, the use cost is reduced, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to a water inlet conversion device. Background Art

[0002] Existing bottled liquid conversion devices are mainly used for the convenient use and conversion of liquids in scenarios such as households and travels. However, there are some obvious defects in the existing technology, which limit their applicability in actual use.

[0003] Firstly, existing conversion devices are usually designed for specific specifications of bottle mouths. Different sizes or shapes of bottle mouths often require different conversion devices, which increases the purchase and use costs for users. In addition, the design that cannot be compatible with multiple bottle mouths also limits the versatility and convenience of the device to a certain extent.

[0004] Secondly, the air inlet valve structure of existing conversion devices is usually relatively complex, and multiple components are used in cooperation to achieve the air inlet function. The complex air inlet structure not only makes the production process complex and the manufacturing cost increase, but also easily affects the service life of the device due to part wear or aging. Especially during use, problems such as poor air inlet or air leakage will cause uneven liquid outflow and affect the user experience. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water inlet conversion device with a simple structure, low cost, and capable of being compatible with multiple specifications of bottle mouths.

[0006] The purpose of the utility model is achieved as follows:

[0007] A water inlet conversion device includes a bottle mouth connection cover, the bottle mouth connection cover is provided with a large bottle mouth connection cavity and a small bottle mouth connection cavity, and the large bottle mouth connection cavity and the small bottle mouth connection cavity are communicated;

[0008] The bottle mouth connection cover is provided with a water outlet channel, the water outlet channel is communicated with the small bottle mouth connection cavity, and a one-way valve is arranged in the water outlet channel;

[0009] The bottle mouth connection cover is provided with an air inlet channel, the air inlet channel is communicated with the small bottle mouth connection cavity, and an air inlet valve is arranged in the air inlet channel;

[0010] The air inlet valve is a silica gel body, and an air port is opened on the silica gel body.

[0011] By setting the large bottle mouth connection cavity and the small bottle mouth connection cavity, the device can adapt to different specifications of bottle mouths, improves the versatility, users do not need to purchase multiple conversion devices separately for bottles of different sizes, reduces the use cost, and increases the use convenience.

[0012] The device uses a silica gel body as the intake valve, with a simple structural design and high integration. Compared with the traditional multi-component intake structure, this design reduces the number of components, lowering production costs and assembly difficulty. At the same time, the silica gel body material has good flexibility and sealing performance, ensuring the smooth entry of gas and the stable outflow of liquid.

[0013] A one-way valve is built into the water outlet channel, which can effectively prevent liquid backflow, ensuring that the liquid only flows out when needed, improving the safety and controllability of use.

[0014] The design of the silica gel body intake valve makes the intake process more stable and smooth, helping to balance the pressure difference inside and outside the bottle, thus avoiding problems such as poor water outflow or water cut-off caused by negative pressure and providing a better user experience.

[0015] The silica gel material has good durability and anti-aging performance, and is not easily deformed or damaged during long-term use, extending the service life of the device and further reducing the maintenance cost for users.

[0016] For a water dispenser equipped with a bottle mouth connection cover, the bottle mouth connection cover is connected to the water bottle. When the water dispenser is started and pumps water, a negative pressure is generated inside the bottle, and the atmospheric pressure outside the bottle is greater than the pressure inside the bottle. At this time, the air port of the silica gel body intake valve will automatically open, allowing external air to enter the bottle, quickly balancing the pressure difference inside and outside the bottle, avoiding problems such as poor water outflow or water cut-off caused by negative pressure, and ensuring that the liquid can flow out stably.

[0017] The intake valve adopts an integrated silica gel body design, and the air port only opens automatically when there is negative pressure inside the bottle. The structure is simple and the action is sensitive.

[0018] The object of the present utility model can also be solved by the following technical measures:

[0019] Furthermore, it also includes an air nozzle seat. The air nozzle seat is provided with air holes at intervals, and the air nozzle seat is placed inside the intake channel and below the intake valve.

[0020] The air nozzle seat is arranged inside the intake channel and below the intake valve. The air holes opened at intervals on it can evenly introduce external air, avoiding problems such as unstable air flow or blockage during the intake process. Through the guidance of the air nozzle seat, the intake is smoother, the intake efficiency is improved, thus ensuring the rapid balance of the pressure inside and outside the bottle and further guaranteeing the stable outflow of the liquid.

[0021] The number and interval of the air holes on the air nozzle seat can be designed and optimized according to needs, enabling more precise control of the intake volume, avoiding phenomena such as bubbles or turbulent flow caused by excessive intake, and at the same time ensuring that insufficient intake will not affect the stable outflow of the liquid.

[0022] The air nozzle seat, as the first barrier of the intake passage, can effectively block large foreign particles from entering the intake passage from the outside, protect the intake valve from damage, and improve the overall durability and stability of the device.

[0023] Furthermore, the inner walls of both the large bottle mouth connection cavity and the small bottle mouth connection cavity are threaded inner walls.

[0024] By designing a threaded structure on the inner walls of the large bottle mouth connection cavity and the small bottle mouth connection cavity, which closely cooperates with the bottle mouth thread, the sealing performance between the bottle nozzle and the connection cover can be effectively enhanced, preventing air leakage and water leakage. At the same time, the threaded connection can ensure that the connection cover is firmly fixed on the bottle mouth, not easily loosened or detached, improving the stability of the device.

[0025] The inner wall thread design is suitable for the common thread bottle mouth specifications on the market, further improving the versatility of the device. Whether it is a large bottle mouth or a small bottle mouth, reliable connection can be achieved through the thread. Users do not need to worry about the problem of incompatible bottle mouth specifications, increasing the flexibility and convenience of use.

[0026] The threaded design makes the installation and disassembly of the connection cover more convenient and fast. Users only need to rotate and tighten or loosen the connection cover to complete the operation, saving time and effort, and is especially suitable for the scenario of frequently replacing bottled water.

[0027] The threaded connection ensures the sealing performance and stability of the water inlet conversion device, avoiding air leakage problems caused by loose connection. The stable sealing performance helps to maintain the pressure difference between the inside and outside of the bottle, ensuring that the intake valve and the one-way valve can work properly, and thus guaranteeing the stability and smoothness of the liquid outflow.

[0028] Furthermore, the silica gel body is a duckbill-shaped silica gel body. The duckbill position of the duckbill-shaped silica gel body faces the small bottle mouth connection cavity, and the air port is opened at the duckbill position of the duckbill-shaped silica gel body.

[0029] The duckbill-shaped silica gel body structure naturally has the characteristic of one-way opening and closing. Its duckbill part automatically opens for air intake under the negative pressure inside the bottle, and external air flows into the bottle through the air port. When the pressure inside and outside the bottle is balanced, the duckbill automatically closes, preventing gas backflow or impurities from entering. Compared with the traditional flat silica gel valve, the duckbill-shaped design can more accurately control the air intake volume, ensuring stable and reliable air intake effect.

[0030] The duckbill-shaped silica gel body is in a natural closed state when not opened, and has good self-sealing ability. The opening and closing of the duckbill mouth depends on the pressure difference, so it can keep tightly closed when air intake is not required, preventing external air or impurities from accidentally entering the bottle, and improving the overall sealing performance and safety of the device.

[0031] The duckbill design allows the air intake valve to open quickly when a slight negative pressure is generated in the bottle. The air intake process is sensitive and has low resistance, which can better respond to the pressure changes generated when the water dispenser is pumping water, ensuring that the pressure difference inside and outside the bottle is balanced in time, and avoiding water flow interruption or unevenness due to poor air intake.

[0032] The duckbill-shaped silicone body has a simple structure, is one-piece and does not require complex parts assembly, and has low production costs. This design not only achieves efficient air intake, but also simplifies the manufacturing process, and has good economic and market competitiveness.

[0033] The duckbill-shaped silicone body is wear-resistant and aging-resistant, and can maintain good elasticity and sealing during long-term use. Even under high-frequency opening and closing operations, the duckbill structure can still work stably, ensuring long-term and reliable use of the device.

[0034] Furthermore, the bottom wall of the large bottle mouth docking cavity is opened at a position corresponding to the small bottle mouth docking cavity, thereby realizing the connection between the large bottle mouth docking cavity and the small bottle mouth docking cavity.

[0035] By opening an opening on the bottom wall of the large bottle mouth connection cavity, the large bottle mouth connection cavity and the small bottle mouth connection cavity are connected. No matter the user uses bottled water with a large bottle mouth or a small bottle mouth, the water can be smoothly guided into the water outlet channel through the structure, which has a wider adaptability and improves the versatility of the device.

[0036] The connecting design of the large bottle mouth connecting cavity and the small bottle mouth connecting cavity ensures the smooth flow of liquid between bottles of different specifications. No matter what bottle mouth specifications are used, the liquid can be effectively introduced into the small bottle mouth connecting cavity and flow out smoothly through the water outlet channel, avoiding unstable flow rate or flow interruption caused by mismatch of bottle mouths.

[0037] Furthermore, the bottom wall of the large bottle mouth connecting cavity and the bottom wall of the small bottle mouth connecting cavity are both provided with a silicone pad.

[0038] The bottom walls of the large bottle mouth connection cavity and the small bottle mouth connection cavity are both provided with silicone pads, which can fit tightly against the bottle mouth to form a reliable sealing structure and effectively prevent the leakage of liquid or air. Compared with ordinary hard materials, silicone pads have better softness and elasticity, can adapt to the slight size differences of different bottle mouths, ensure a tight fit, and greatly improve the overall sealing performance.

[0039] The silicone pad can form a soft and close contact between the bottle mouth and the bottom wall of the connecting cavity, avoiding water leakage or air leakage caused by poor contact.

[0040] The silicone pad can well adapt to the slight changes of various specifications of the bottle mouth. Whether the bottle mouth is slightly larger or smaller, it can achieve a tight fit through the self - adaptability of the silicone pad, further improving the applicable range and versatility of the device. When users replace bottles of different specifications, they don't need to worry about the impact on the use effect due to incomplete matching of the bottle mouth.

[0041] Furthermore, it also includes an adapter cover. The adapter cover is provided with a water inlet pipe and a drain pipe for connecting to an external water source. The adapter cover is connected to the bottle mouth connection cover, and the drain pipe extends into the bottle mouth connection cover to connect to the water outlet channel.

[0042] By setting the adapter cover and adding the water inlet pipe and the drain pipe, the device is not only applicable to traditional bottled water, but can also be directly connected to external water sources such as pipeline machines and water purification equipment. Users can flexibly choose different water supply methods when using, greatly expanding the applicable scenarios of the device.

[0043] The connection design between the adapter cover and the bottle mouth connection cover is simple, facilitating installation and disassembly. Users can freely choose to use or remove the adapter cover according to their needs. At the same time, the overall structure is compact, occupying little space and not affecting the overall beauty and function of the device.

[0044] This design enables the water inlet conversion device to be not only applicable to the application of single - bottled water, but also easily compatible with multiple water sources, greatly enhancing the versatility of the device. Whether at home or in commercial settings, users can choose the most suitable water supply method according to their needs, improving the flexibility and adaptability of the device in use.

[0045] Furthermore, the adapter cover is provided with a threaded connection part, and the large - bottle - mouth connection cavity and / or the small - bottle - mouth connection cavity are thread - connected to the threaded connection part to achieve the connection between the adapter cover and the bottle mouth connection cover.

[0046] The threaded connection part can ensure the firm connection between the adapter cover and the bottle mouth connection cover, effectively avoiding problems such as loosening or falling off caused by vibration, movement or improper operation during use, thus ensuring the stability and safety of the device during long - term use.

[0047] Through the tight joint formed by the threaded connection, the sealing effect between the adapter cover and the bottle mouth connection cover is further enhanced. Good sealing can not only effectively prevent water source leakage, but also avoid external air entering the system, keeping the internal liquid pure and improving the use experience and product quality.

[0048] The threaded connection design makes the installation and disassembly simpler and more convenient. Users only need to rotate to easily complete the connection or separation between the adapter cover and the bottle mouth connection cover without using additional tools, greatly improving the convenience of operation, especially being more flexible when frequent replacement or adjustment of the use scenario is required.

[0049] Whether the user selects a large bottle mouth, a small bottle mouth, or connects to an external water source, quick adaptation can be achieved through threaded connection, improving the versatility of the device.

[0050] Furthermore, a sealing ring is sleeved on the drain pipe, and the drain pipe is inserted into the water inlet channel. The sealing ring seals the gap between the drain pipe and the water inlet channel.

[0051] The sealing ring can closely fit the contact surface between the drain pipe and the water inlet channel, forming a reliable sealing barrier. This design effectively prevents the leakage of water source or liquid when passing through the drain pipe, ensuring the stability and safety of the water flow inside the system.

[0052] The setting of the sealing ring makes the connection between the drain pipe and the water inlet channel tighter, eliminating the need for additional sealant or complex sealing devices. The user only needs to insert the drain pipe into the water inlet channel and ensure that the sealing ring is in place to complete the installation, simplifying the installation process and facilitating later maintenance and cleaning.

[0053] Furthermore, a decorative cover is provided above the air inlet channel of the bottle mouth connecting cover. The decorative cover is provided with a ventilation port, and the air inlet valve is located inside the decorative cover.

[0054] By blocking the air inlet valve, the decorative cover makes the overall design of the device more coordinated, avoiding the situation of the air inlet valve being exposed. It enhances the overall design sense of the device.

[0055] Although the decorative cover blocks the air inlet valve, its design still ensures the normal ventilation and functionality of the air inlet channel. The design of the ventilation port guarantees the effective operation of the air inlet valve, ensuring that the device is beautiful without affecting its normal functions and performance.

[0056] The beneficial effects of the present utility model are as follows:

[0057] In the present utility model, by providing a large bottle mouth connecting cavity and a small bottle mouth connecting cavity, the device can adapt to different specifications of bottle mouths, improving versatility. Users do not need to purchase multiple conversion devices separately for bottles of different sizes, reducing the usage cost and increasing the usage convenience.

[0058] In the present utility model, the duckbill-shaped silica gel body structure naturally has the characteristic of one-way opening and closing. Its duckbill part automatically opens for air intake under the negative pressure inside the bottle, and external air flows into the bottle through the air port. When the pressure inside and outside the bottle is balanced, the duckbill automatically closes, preventing gas backflow or impurities from entering. Compared with the traditional flat silica gel valve, the duckbill-shaped design can more precisely control the air intake volume, ensuring stable and reliable air intake effect.

[0059] In this utility model, by setting up an adapter cover and adding a water inlet pipe and a drain pipe, the device is applicable not only to traditional bottled water but also can be directly connected to external water sources such as pipeline machines and water purification equipment. When in use, users can flexibly choose different water supply methods from various water sources, greatly expanding the applicable scenarios of the device. Brief Description of the Drawings

[0060] Figure 1 It is a schematic diagram of the water inlet conversion device (the state where the bottle mouth connection cover and the adapter cover are assembled).

[0061] Figure 2 It is another perspective schematic diagram of the water inlet conversion device (the state where the bottle mouth connection cover and the adapter cover are assembled).

[0062] Figure 3 It is a cross-sectional view of the water inlet conversion device (the state where the bottle mouth connection cover and the adapter cover are assembled).

[0063] Figure 4 It is a schematic diagram of the water inlet conversion device (the state where the bottle mouth connection cover and the adapter cover are separated).

[0064] Figure 5 It is another perspective schematic diagram of the water inlet conversion device (the state where the bottle mouth connection cover and the adapter cover are separated).

[0065] Figure 6 It is an assembly drawing of the bottle mouth connection cover, the air inlet valve and the one-way valve.

[0066] Figure 7 It is a schematic diagram of the bottle mouth connection cover.

[0067] Figure 8 It is a top view of the bottle mouth connection cover.

[0068] Figure 9 For Figure 8 A - A cross-sectional view.

[0069] Figure 10 For Figure 8 B - B cross-sectional view.

[0070] Figure 11 For Figure 8 C - C cross-sectional view.

[0071] Figure 12 It is a schematic diagram of the bottle mouth connection cover (with a decorative cover).

[0072] Figure 13 For Figure 12 Cross-sectional view. Detailed Embodiment

[0073] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0074] Embodiment, in combination with Figures 1 to 13 As shown in Figures 1 to 13 , a water inlet conversion device includes a bottle mouth connection cover 1. The bottle mouth connection cover 1 is provided with a large bottle mouth connection cavity 2 and a small bottle mouth connection cavity 3, and the large bottle mouth connection cavity 2 is communicated with the small bottle mouth connection cavity 3;

[0075] The bottle mouth connection cover 1 is provided with a water outlet channel 4, the water outlet channel 4 is communicated with the small bottle mouth connection cavity 3, and a one-way valve 6 is arranged in the water outlet channel 4;

[0076] The bottle mouth connection cover 1 is provided with an air inlet channel 5, the air inlet channel 5 is communicated with the small bottle mouth connection cavity 3, and an air inlet valve 7 is arranged in the air inlet channel 5;

[0077] The air inlet valve 7 is a silica gel body, and an air port 71 is opened on the silica gel body.

[0078] Furthermore, it further includes an air nozzle seat 8. The air nozzle seat 8 is provided with air holes 81 at intervals, and the air nozzle seat 8 is placed in the air inlet channel 5 and is located below the air inlet valve 7.

[0079] Furthermore, the inner walls of the large bottle mouth connection cavity 2 and the small bottle mouth connection cavity 3 are both threaded inner walls.

[0080] Furthermore, the silica gel body is a duckbill-shaped silica gel body. The duckbill position of the duckbill-shaped silica gel body faces the small bottle mouth connection cavity 3, and the air port 71 is opened at the duckbill position of the duckbill-shaped silica gel body.

[0081] Furthermore, the bottom wall of the large bottle mouth connection cavity 2 is opened at a position corresponding to the small bottle mouth connection cavity 3 to realize the communication between the large bottle mouth connection cavity 2 and the small bottle mouth connection cavity 3.

[0082] Furthermore, silica gel pads 100 are arranged on the bottom walls of both the large bottle mouth connection cavity 2 and the small bottle mouth connection cavity 3.

[0083] Furthermore, it further includes an adapter cover 9. The adapter cover 9 is provided with a water inlet pipe 91 and a drain pipe 92 for connecting an external water source. The adapter cover 9 is connected to the bottle mouth connection cover 1, and the drain pipe 92 extends into the bottle mouth connection cover 1 and is connected to the water outlet channel 4.

[0084] Furthermore, the adapter cover 9 is provided with a threaded connection portion 93, and the large bottle mouth connection cavity 2 is threadedly connected to the threaded connection portion 93 to realize the connection between the adapter cover 9 and the bottle mouth connection cover 1.

[0085] Furthermore, a sealing ring 10 is sleeved on the drain pipe 92. The drain pipe 92 is inserted into the water inlet channel, and the sealing ring 10 seals the gap between the drain pipe 92 and the water inlet channel.

[0086] Further, a decorative cover 200 is provided above the bottle mouth connection cover 1 in the air inlet passage 5. The decorative cover 200 is provided with a vent 201, and the air inlet valve 7 is located within the decorative cover 200.

[0087] For a water dispenser equipped with a bottle mouth connection cover 1, when the bottle mouth connection cover 1 is connected to a large-mouth bottle, the drainage process of the water dispenser is as follows:

[0088] Drainage process:

[0089] Connection of the bottle mouth connection cover 1: When the water dispenser is connected to a large-mouth bottle, the large-mouth connection cavity 2 fits tightly with the bottle mouth, and the liquid in the bottle enters the small-mouth connection cavity 3 through the large-mouth connection cavity 2.

[0090] Operation of the one-way valve 6: The one-way valve 6 in the water outlet passage 4 allows the liquid to flow out of the small-mouth connection cavity 3 into the water dispenser system. During the drainage process, the one-way valve 6 remains open to ensure smooth drainage of the liquid, while preventing external air or moisture from flowing back into the connection cavity.

[0091] Operation of the air inlet valve 7: Since the atmospheric pressure outside the bottle is greater than the pressure of the liquid inside the bottle, the air inlet valve 7 will automatically open. The duckbill-shaped air inlet valve 7 made of silica gel provides an air port 71 on the air inlet passage 5, allowing air to enter the bottle to balance the pressure inside and outside the bottle, thereby ensuring the smooth outflow of the liquid.

[0092] For a water dispenser equipped with a bottle mouth connection cover 1, when the bottle mouth connection cover 1 is connected to a small-mouth bottle, the drainage process of the water dispenser is as follows:

[0093] Drainage process:

[0094] Connection of the bottle mouth connection cover 1: When the water dispenser is connected to a small-mouth bottle, the small-mouth connection cavity 3 directly cooperates with the bottle mouth, and the liquid in the bottle flows into the water outlet passage 4 through the small-mouth connection cavity 3.

[0095] Operation of the one-way valve 6: During the drainage process, the one-way valve 6 in the water outlet passage 4 remains open, allowing the liquid to flow out of the small-mouth connection cavity 3. The one-way valve 6 prevents external air or liquid from flowing back into the connection cavity.

[0096] Operation of the air inlet valve 7: When the liquid in the bottle is drained, the pressure inside the bottle will gradually decrease, and the air inlet valve 7 will open during this process. The duckbill-shaped air inlet valve 7 made of silica gel allows external air to enter the bottle through the air port 71 to ensure the balance of air pressure inside and outside the bottle, thereby maintaining the stable outflow of the liquid.

[0097] For a water dispenser equipped with a bottle mouth connection cover 1 and an adapter cover 9, when connecting to a pipeline machine, the drainage process of the water dispenser is as follows:

[0098] Drainage process:

[0099] Adapter cover 9 connection: When the water dispenser is connected to the pipeline machine, the water inlet pipe 91 of the adapter cover 9 is connected to the pipeline machine, and the drain pipe 92 of the adapter cover 9 is inserted into the bottle mouth connection cover 1 and connected to the water outlet channel 4. At the same time, the adapter cover 9 and the bottle mouth connection cover 1 are threadedly connected to achieve direct water supply from an external water source.

[0100] One-way valve 6 operation: In this case, the one-way valve 6 remains open, allowing external water sources to enter the water outlet channel 4 through the drain pipe 92 and flow out of the water dispenser system. The one-way valve 6 prevents external water sources from flowing back into the connection cavity.

Claims

1. A water inlet conversion device, comprising a bottle mouth connection cover, characterized in that: The bottle mouth docking cover is provided with a large bottle mouth docking cavity and a small bottle mouth docking cavity, and the large bottle mouth docking cavity and the small bottle mouth docking cavity are connected; The bottle mouth docking cover is provided with a water outlet channel, the water outlet channel is connected to the small bottle mouth docking cavity, and a one-way valve is built in the water outlet channel; The bottle mouth connection cover is provided with an air inlet channel, the air inlet channel is connected to the small bottle mouth connection cavity, and the air inlet channel is built with an air inlet valve; The air inlet valve is a silica gel body, and the silica gel body is provided with an air port.

2. The water inlet conversion device according to claim 1, characterized in that: It also includes a valve seat, which is provided with air holes at intervals. The valve seat is placed in the air intake passage and below the air intake valve.

3. The water inlet conversion device according to claim 1, characterized in that: The inner wall of the large bottle mouth connecting cavity and the inner wall of the small bottle mouth connecting cavity are both threaded inner walls.

4. The water inlet conversion device according to claim 1, characterized in that: The silicone body is a duckbill silicone body, the duckbill position of the duckbill silicone body faces the vial port connection cavity, and the air port is opened at the duckbill position of the duckbill silicone body.

5. The water inlet conversion device according to claim 1, characterized in that: The bottom wall of the large bottle mouth connecting cavity is opened at a position corresponding to the small bottle mouth connecting cavity, so that the large bottle mouth connecting cavity and the small bottle mouth connecting cavity are connected.

6. The water inlet conversion device according to claim 5, characterized in that: The bottom wall of the large bottle mouth connecting cavity and the bottom wall of the small bottle mouth connecting cavity are both provided with a silicone pad.

7. The water inlet conversion device according to claim 1, characterized in that: It also includes a transfer cover, which is provided with a water inlet pipe and a drain pipe for connecting to an external water source. The transfer cover is connected to the bottle mouth connection cover, and the drain pipe extends into the bottle mouth connection cover to connect to the water outlet channel.

8. The water inlet conversion device according to claim 7, characterized in that: The transfer cover is provided with a threaded connection portion, and the large bottle mouth connection cavity and / or the small bottle mouth connection cavity are threadedly connected to the threaded connection portion to achieve connection between the transfer cover and the bottle mouth connection cover.

9. The water inlet conversion device according to claim 7, characterized in that: The drain pipe is sleeved with a sealing ring, the drain pipe is inserted into the water inlet channel, and the sealing ring seals the gap between the drain pipe and the water inlet channel.

10. The water inlet conversion device according to any one of claims 1 to 9, characterized in that: The bottle mouth connecting cover is provided with a decorative cover above the air inlet passage, the decorative cover is provided with an air vent, and the air inlet valve is located inside the decorative cover.

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