Self-adaptive drain valve device and foaming device

Abstract

The utility model relates to a self-adaptive drain valve device and a foaming device. The foaming device has a clear water mode and a foaming mode. In the clean water mode, clean water is conveyed to the clean water pipeline and does not enter the foaming pipeline, and the water flow speed input into the clean water pipeline is higher than that input into the foaming pipeline in the foaming mode; the device comprises a valve body and a valve element, and the valve element adjusts opening and closing of the water outlet end according to the speed of water flow input into the foaming device. The water inlet end comprises a first water inlet pipe, the water outlet end comprises a first water outlet pipe and a second water outlet pipe, the first water outlet pipe is connected with a water inlet of the foaming device, and in the clean water mode, the valve element is located at the first position, and only the first water outlet pipe is communicated with the first water outlet pipe; in the foaming mode, the valve element moves to the second position, the first water inlet pipe communicates with the first water outlet pipe and the second water outlet pipe, part of water flow is input into the foaming device through the first water outlet pipe, the other part of water flow is discharged through the second water outlet pipe, the water inlet amount of the first water inlet pipe is ensured, and the situation that the gas water heater cannot be normally started is avoided.

Description

Technical Field

[0001] This application relates to the field of shower foamer technology, and more particularly to an adaptive drain valve device and a foaming device. Background Technology

[0002] A shower foamer is a device that helps bath products (such as shower gel, shampoo, and other cleaning liquids) quickly generate rich foam. It primarily uses physical or mechanical methods to transform liquids into fine foam. When used with a gas water heater, shower foamers present the following problems: During operation, the amount of water supplied from the gas water heater to the foamer cannot be excessive; otherwise, the foaming effect will be affected, resulting in less fine foam. This is because limiting the amount of water supplied from the gas water heater can cause low water pressure in the gas water heater, preventing it from starting properly. Utility Model Content

[0003] Therefore, it is necessary to provide an adaptive drain valve device and a foaming device to address the aforementioned problems with existing foaming devices.

[0004] The first aspect of this application provides an adaptive drain valve device, which is applied to a foaming device having a clean water mode and a foaming mode; in the clean water mode, the water flow rate input to the foaming device is configured to be higher than the water flow rate input to the foaming device in the foaming mode.

[0005] The device includes a valve body, which has an inlet end and an outlet end, and a valve core is provided between the inlet end and the outlet end.

[0006] The water inlet includes a first water inlet pipe, and the water outlet includes a first water outlet pipe and a second water outlet pipe. The first water outlet pipe is connected to the water inlet of the foaming device, and the valve core adjusts the opening and closing state of the water outlet according to the water flow rate input to the foaming device.

[0007] When the valve core is in the first position, the first inlet pipe is connected to the first outlet pipe, and the first inlet pipe is cut off from the second outlet pipe; when the valve core is in the second position, the first inlet pipe is connected to both the first outlet pipe and the second outlet pipe.

[0008] This application discloses an adaptive drainage valve device applied to a foaming device. The foaming device has a clean water mode and a foaming mode. In the clean water mode, clean water is delivered to the clean water pipe of the foaming device but will not enter the foaming pipe, and the water flow velocity input to the clean water pipe is configured to be higher than the water flow velocity input to the foaming pipe in the foaming mode. The device includes a valve body and a valve core. The valve body has an inlet end and an outlet end. The valve core adjusts the opening and closing state of the outlet end according to the water flow velocity input to the foaming device. The inlet end includes a first inlet pipe, and the outlet end includes a first outlet pipe and a second outlet pipe. The first outlet pipe is connected to the inlet of the foaming device. The foaming device... In the clear water mode, the valve core is in the first position, blocking the second outlet pipe. At this time, the first outlet pipe is only connected to the first outlet pipe. When the foaming device is in the foaming mode, the valve core moves from the first position to the second position. At this time, the first inlet pipe is connected to both the first and second outlet pipes. The clear water injected into the first inlet pipe is partially input into the mixing chamber of the foaming device through the first outlet pipe and partially discharged through the second outlet pipe to ensure the water intake of the first inlet pipe and prevent the gas water heater from failing to start normally. The adaptive drain valve device of this application can achieve passive drainage according to the change of internal pressure of the valve body, without manual operation and without electricity.

[0009] In one embodiment, the valve core includes a valve housing, a top plate, a spring, and a fixing bracket. The valve housing is inserted into the second water outlet pipe. The valve housing forms a first water guiding cavity and a first through hole and a second through hole communicating with the first water guiding cavity. The first through hole communicates with the water inlet of the second water outlet pipe, and the second through hole communicates with the water outlet of the second water outlet pipe. The top plate and the fixing bracket are located at both ends of the first water guiding cavity, and both ends of the spring are connected to the top plate and the fixing bracket, respectively. When the valve core is in the first position, the top plate blocks the first through hole. When the valve core is in the second position, the top plate moves away from the first through hole.

[0010] In the above embodiment, the adaptive drain valve device can move within the first water guiding cavity formed by the top plate. The top plate and the fixed bracket are connected at both ends of the spring respectively. The top plate blocks the inlet of the second outlet pipe under the action of the spring. When the pressure in the pipe is greater than the elastic force of the spring, the top plate overcomes the elastic force of the spring and moves away from the inlet of the second outlet pipe, thereby realizing the conduction of the second inlet pipe.

[0011] In one embodiment, the valve core further includes a sealing ring disposed on the top plate and sandwiched between the first through hole and the top plate.

[0012] The adaptive drain valve device in the above embodiment has a sealing ring between the first through hole and the top plate, which can seal the gap between the top plate and the first through hole, enhance the sealing performance, prevent the second water outlet pipe from leaking when the foaming device is in the clear water mode, and improve the reliability of the device.

[0013] In one embodiment, the valve core further includes a throttle valve, which is installed inside the second outlet pipe and sandwiched between the inlet of the second outlet pipe and the first through hole.

[0014] In the adaptive drainage valve device described in the above embodiment, a throttle valve is provided between the inlet of the second outlet pipe and the first through hole. The throttle valve can buffer the impact of the water flow in the first water guide cavity through its internal structure, making the water flow more uniform and avoiding sudden changes in drainage volume.

[0015] In one embodiment, the valve core further includes a pressure regulator disposed on the valve body and extending at least partially into the first water guide cavity and connected to the fixed bracket. The pressure regulator is movable relative to the valve body to adjust the initial distance between the fixed bracket and the top plate.

[0016] The adaptive drain valve device in the above embodiment is movably mounted on the valve body via a pressure regulator, which is connected to a fixed bracket. When the pressure regulator moves relative to the valve body, it can drive the fixed bracket to move within the first water guide cavity, thereby changing the initial distance between the fixed bracket and the top plate. The smaller the distance between the fixed bracket and the top plate, the greater the elastic deformation of the spring, and the greater the spring force. The top plate then needs to obtain greater pressure to overcome the spring force. By adjusting the pressure on the spring through the pressure regulator, the drain valve device can adapt to different water pressure environments.

[0017] In one embodiment, the pressure regulator is threadedly connected to the fixed bracket.

[0018] The adaptive drain valve device in the above embodiment is connected to the fixed bracket by a pressure regulator via a threaded connection. By rotating the pressure regulator relative to the fixed bracket, the distance between the fixed bracket and the top plate can be adjusted.

[0019] In one embodiment, the device further includes a Venturi negative pressure module disposed between the first inlet pipe and the first outlet pipe. The outlet of the Venturi negative pressure module is connected to the inlet of the first outlet pipe and the inlet of the second outlet pipe, respectively. The Venturi negative pressure module is used to create negative pressure at the inlet of the second outlet pipe.

[0020] The adaptive drain valve device of the above embodiment forms a negative pressure at the inlet of the second outlet pipe through the Venturi negative pressure module. Specifically, when the foaming device is in clear water mode, the water flow velocity from the outlet of the Venturi negative pressure module to the inlet of the first outlet pipe is relatively high. The Venturi negative pressure module forms a negative pressure at the inlet of the second outlet pipe, which has an adsorption effect on the top plate, so that the top plate is firmly sealed on the first through hole. When the foaming device is in foaming mode, the water flow velocity at the inlet of the first outlet pipe is reduced. Part of the clear water discharged from the outlet of the Venturi negative pressure module enters the first outlet pipe, and the other part enters the first through hole. Since the water pressure is greater than the elastic force of the spring, the top plate is pushed away from the first through hole. The negative pressure zone formed by the Venturi negative pressure module at the inlet of the second outlet pipe can increase the drainage sensitivity of the device.

[0021] In one embodiment, the Venturi negative pressure module includes a first housing and a Venturi tube. The first housing is sleeved around the Venturi tube. The first housing is connected to a first inlet pipe and a first outlet pipe. A second water guiding cavity is formed between the outlet of the Venturi tube and the inlet of the first outlet pipe. A first notch is provided on the first housing. The second water guiding cavity, the first notch, and the inlet of the second outlet pipe are connected in sequence.

[0022] In one embodiment, the outlet of the second water outlet is connected to a drain tap, which can switch whether the second water outlet is connected to the outside atmosphere.

[0023] The adaptive drain valve device in the above embodiment is connected to the drain faucet through the outlet of the second water outlet pipe. By adding the drain faucet, the connection between the second water outlet pipe and the external atmosphere can be manually switched. When the drain faucet is closed, the adaptive drain valve device will not discharge water from the drain faucet regardless of the working mode of the foaming device. This avoids the risk of water leakage at the outlet of the second water outlet pipe when the foaming device is in clean water mode, thus improving the user experience.

[0024] The second aspect of this application provides a foaming device, including a main unit and the adaptive drain valve device described in any of the above claims. The outlet of the first water outlet pipe is connected to the inlet of the main unit. The main unit can mix and foam the input water, gas, and liquid. The main unit has a foaming mode and a clear water mode. In the foaming mode, the amount of water output from the first water outlet pipe to the main unit is less than the amount of water output from the first water outlet pipe to the main unit in the clear water mode. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the adaptive drain valve device in one embodiment;

[0026] Figure 2This is a cross-sectional view of an adaptive drain valve device in one embodiment;

[0027] Figure 3 This is a partial structural schematic diagram of the adaptive drain valve device in one embodiment;

[0028] Figure 4 This is a schematic diagram of the structure of a Venturi negative pressure module in one embodiment;

[0029] Figure 5 This is a schematic diagram of the valve housing structure in one embodiment;

[0030] Figure 6 This is a schematic diagram illustrating the working principle of the foaming device in one embodiment.

[0031] Figure label:

[0032] 10 Valve body, 11 First inlet pipe, 12 First outlet pipe, 13 Second outlet pipe;

[0033] 20 Valve core, 21 Valve housing, 22 Top plate, 23 Spring, 24 Fixed bracket, 25 Sealing ring, 26 Throttle valve, 27 Pressure regulator, 271 Knob, 272 Rod, 201 First water guide chamber, 202 First through hole, 203 Second through hole, 204 Third through hole;

[0034] 30 Venturi negative pressure module, 31 first housing, 32 Venturi tube, 301 second water guiding cavity, 302 first notch;

[0035] 40 drain faucet;

[0036] 100 main unit, 200 adaptive drain valve device. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0039] like Figure 1-6As shown, this embodiment provides an adaptive drain valve device, which is applied to a foaming device. The foaming device has a clean water mode and a foaming mode. In the clean water mode, the water flow rate input to the foaming device is configured to be higher than the water flow rate input to the foaming device in the foaming mode.

[0040] The device includes a valve body 10, which has an inlet end and an outlet end, and a valve core 20 is provided between the inlet end and the outlet end.

[0041] The inlet end includes a first inlet pipe 11, and the outlet end includes a first outlet pipe 12 and a second outlet pipe 13. The first outlet pipe 12 is connected to the inlet of the foaming device, and the valve core 20 adjusts the opening and closing state of the outlet end according to the water flow rate input to the foaming device.

[0042] When the valve core 20 is in the first position, the first inlet pipe 11 is connected to the first outlet pipe 12, and the first inlet pipe 11 is cut off from the second outlet pipe 13; when the valve core 20 is in the second position, the first inlet pipe 11 is connected to both the first outlet pipe 12 and the second outlet pipe 13.

[0043] The adaptive drain valve device of this application is applied to a foaming device, which has a clean water mode and a foaming mode. In the clean water mode, clean water is delivered to the clean water pipe of the foaming device but will not enter the foaming pipe, and the water flow rate input to the clean water pipe is configured to be higher than the water flow rate input to the foaming pipe in the foaming mode. The device includes a valve body 10 and a valve core 20. The valve body 10 has an inlet end and an outlet end. The valve core 20 adjusts the opening and closing state of the outlet end according to the water flow rate input to the foaming device. The inlet end includes a first inlet pipe 11, and the outlet end includes a first outlet pipe 12 and a second outlet pipe 13. The first outlet pipe 12 is connected to the inlet of the foaming device. In the clean water mode, the valve core 20... In the first position, the second outlet pipe 13 is blocked, and the first outlet pipe 12 is only connected to the first outlet pipe 12. When the foaming device is in foaming mode, the valve core 20 moves from the first position to the second position. At this time, the first inlet pipe 11 is connected to both the first outlet pipe 12 and the second outlet pipe 13. The clean water injected into the first inlet pipe 11 is partly input into the mixing chamber of the foaming device through the first outlet pipe 12 and partly discharged through the second outlet pipe 13 to ensure the water intake of the first inlet pipe 11 and prevent the gas water heater from failing to start normally. The adaptive drain valve device 200 of this application can achieve passive drainage according to the change of internal pressure of the valve body 10, without manual operation and without electricity.

[0044] The foaming device can mix and foam the input clean water, air, and cleaning liquid. The cleaning liquid can be one or a combination of cleaning liquids such as shampoo, shower gel, facial cleanser, or hand soap. The foaming device can be connected to a water source, such as a gas water heater, through an adaptive drain valve device 200. The water source can be a gas water heater, and the outlet of the gas water heater is connected to the first inlet pipe 11 of the adaptive drain valve. The foaming device has a clean water mode and a foaming mode. In the clean water mode, the foaming device only outputs clean water. In the foaming mode, the foaming device outputs foam composed of a mixture of clean water, air, and cleaning liquid. Specifically, when the foaming device is in foaming mode, the amount of water input from the external water source to the foaming device is less than that in the clean water mode. This is to avoid excessive water volume participating in the mixing and foaming, which would result in poor foaming effect. Therefore, the water flow rate input to the foaming device in the clean water mode is higher than that in the foaming mode.

[0045] The foaming device can be equipped with independent clean water pipes and foaming pipes. When the foaming device is in clean water mode, the clean water from the external water source enters the clean water pipe and is discharged directly without flowing through the foaming pipe. When the foaming device is in foaming mode, the clean water from the external water source enters the foaming pipe, mixes with air and cleaning liquid, and is discharged without flowing through the clean water pipe.

[0046] It should be noted that the flow rate of clean water entering the foaming pipe can be adjusted by installing valves inside the pipe and changing the valve opening.

[0047] The valve core 20 can adjust the opening and closing state of the outlet end according to the water flow rate input to the foaming device. Specifically, in the clear water mode, the water flow rate input to the foaming device is relatively high, that is, the water flow rate at the outlet of the first outlet pipe 12 is relatively high, the valve core 20 is in the first position, the valve core 20 blocks the second outlet pipe 13, and the first inlet pipe 11 is connected to the first outlet pipe 12; in the foaming mode, the water flow rate input to the foaming device is relatively low, the valve core 20 is squeezed and moves from the first position to the second position, the second outlet pipe 13 is open, the first inlet pipe 11 is connected to the first outlet pipe 12 and the second outlet pipe 13 respectively, the clear water injected into the first inlet pipe 11, part of which is input into the mixing chamber of the foaming device through the first outlet pipe 12, and the other part is discharged through the second outlet pipe 13, so as to ensure the water intake of the first inlet pipe 11 and avoid the gas water heater from failing to start normally.

[0048] It should be noted that the valve core 20 can be a combination of a sealing element and a spring 23. For example, in the initial state, the spring 23 provides elastic force to the sealing element to block the inlet of the second water outlet pipe 13. When the foaming device is in the clear water mode, the water flow velocity input to the foaming device is relatively large, and the pressure at the inlet of the second water outlet pipe 13 is insufficient to overcome the elastic force to open the sealing element or can only slightly open the sealing element. When the foaming device is in the foaming mode, the water flow velocity input to the foaming device is relatively small. The flow rate is smaller and the internal water pressure is larger, resulting in the pressure at the inlet of the second water outlet pipe 13 being greater than the pressure of the spring 23, which is sufficient to open the sealing element at the inlet of the second water outlet pipe 13, thereby enabling the second water outlet pipe 13 to be open.

[0049] like Figure 2 and Figure 3 , Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the valve core 20 includes a valve shell 21, a top plate 22, a spring 23 and a fixing bracket 24. The valve shell 21 is inserted into the second water outlet pipe 13. The valve shell 21 forms a first water guiding cavity 201 and a first through hole 202 and a second through hole 203 communicating with the first water guiding cavity 201. The first through hole 202 communicates with the water inlet of the second water outlet pipe 13, and the second through hole 203 communicates with the water outlet of the second water outlet pipe 13.

[0050] The top plate 22 and the fixed bracket 24 are located at both ends of the first water guiding cavity 201. The two ends of the spring 23 are connected to the top plate 22 and the fixed bracket 24 respectively. When the valve core 20 is in the first position, the top plate 22 blocks the first through hole 202. When the valve core 20 is in the second position, the top plate 22 moves away from the first through hole 202.

[0051] The adaptive drainage device in the above embodiment further limits the movement of the top plate 22 within the first water guiding cavity 201 formed by the valve housing 21. The top plate 22 and the fixed bracket 24 are respectively connected by the two ends of the spring 23. The top plate 22 blocks the inlet of the second water outlet pipe 13 under the action of the spring 23. When the pressure in the pipe is greater than the elastic force of the spring 23, the top plate 22 overcomes the elastic force of the spring 23 and moves away from the inlet of the second water outlet pipe 13, thereby realizing the conduction of the second water inlet pipe.

[0052] The valve housing 21 can be a shell structure assembled on the inner wall of the second water outlet pipe 13. A first water guiding cavity 201 is formed inside the valve housing 21. The top plate 22, spring 23 and fixing bracket 24 are all installed in the first water guiding cavity 201. The valve housing 21 can also be provided with a first through hole 202 and a second through hole 203. The water inlet of the second water outlet pipe 13 can be connected to the water outlet of the second water outlet pipe 13 in sequence through the first through hole 202, the first water guiding cavity 201 and the second through hole 203.

[0053] The top plate 22 can move within the first water guiding cavity 201. The top plate 22 can be a circular shell structure, with a diameter larger than the diameter of the first through hole 202 and smaller than the diameter of the first water guiding cavity 201. A gap is left between the top plate 22 and the cavity wall of the first water guiding cavity 201, so that when the top plate 22 moves away from the first through hole 202, the clean water injected into the first through hole 202 can flow through the gap to the second through hole 203. Since the top plate 22 and the fixed bracket 24 are respectively connected to the spring 23, when the pipe pressure at the first through hole 202 is less than the elastic force of the spring 23, the top plate 22 maintains the first position state, blocking the first through hole 202. When the pipe pressure at the first through hole 202 is greater than the elastic force of the spring 23, the top plate 22 moves from the first position to the second position, moving away from the first through hole 202, thereby realizing the conduction of the second water outlet pipe 13.

[0054] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the valve core 20 also includes a sealing ring 25, the sealing ring 25 is disposed on the top plate 22, and the sealing ring 25 is sandwiched between the first through hole 202 and the top plate 22.

[0055] The adaptive drainage device in the above embodiment further specifies that a sealing ring 25 is provided between the first through hole 202 and the top plate 22. Based on the setting of the sealing ring 25, the gap between the top plate 22 and the first through hole 202 can be sealed, thereby enhancing the sealing performance and preventing the second water outlet pipe 13 from leaking when the foaming device is in the clear water mode, thus improving the reliability of the device.

[0056] like Figures 2 to 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the valve core 20 also includes a throttle valve 26, the throttle valve 26 is installed in the second water outlet pipe 13, and the throttle valve 26 is sandwiched between the water inlet of the second water outlet pipe 13 and the first through hole 202.

[0057] The adaptive drainage device in the above embodiment further defines a throttle valve 26 between the inlet of the second outlet pipe 13 and the first through hole 202. The throttle valve 26 can buffer the water flow impact in the first water guide cavity 201 through its internal structure, making the water flow more uniform and avoiding sudden changes in drainage volume.

[0058] The structure of the throttle valve 26 can be referenced from the structure of the water-saving sealing gasket in the prior art for faucets or shower heads, and will not be described in detail here.

[0059] like Figure 2 and Figure 3As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the valve core 20 also includes a pressure regulator 27, the pressure regulator 27 is disposed on the valve body 10, and the pressure regulator 27 extends at least partially into the first water guide cavity 201 and is connected to the fixed bracket 24. The pressure regulator 27 can move relative to the valve body 10 to adjust the initial distance between the fixed bracket 24 and the top plate 22.

[0060] The adaptive drainage device in the above embodiment further defines that the pressure regulator 27 is movably mounted on the valve body 10 and is connected to the fixed bracket 24. When the pressure regulator 27 moves relative to the valve body 10, it can drive the fixed bracket 24 to move within the first water guide cavity 201, thereby changing the initial distance between the fixed bracket 24 and the top plate 22. The smaller the distance between the fixed bracket 24 and the top plate 22, the greater the elastic deformation of the spring 23, and the greater the elastic force of the spring 23. The top plate 22 then needs to obtain greater pressure to overcome the elastic force of the spring 23. By adjusting the pressure on the spring 23 through the pressure regulator 27, it is ensured that the drainage valve device can adapt to different water pressure environments.

[0061] The pressure regulator 27 can be used to adjust the initial distance between the fixed bracket 24 and the top plate 22. The initial distance refers to the distance between the top plate 22 and the fixed bracket 24 when not under pipeline pressure. Specifically, the pressure regulator 27 can move and / or rotate relative to the valve body 10 to move the fixed bracket 24 closer to or further away from the top plate 22.

[0062] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the pressure regulator 27 is threadedly connected to the fixed bracket 24.

[0063] The adaptive drainage device in the above embodiment further specifies that the pressure regulator 27 and the fixed bracket 24 are connected by threads. By rotating the pressure regulator 27 relative to the fixed bracket 24, the distance between the fixed bracket 24 and the top plate 22 can be adjusted.

[0064] The fixed bracket 24 is a shell structure with a groove, and the spring 23 can be fixed in the groove. A third through hole 204 is provided in the groove, and the wall of the third through hole 204 is formed with a first thread. The pressure regulator 27 includes a knob part 271 and a rod 272 connected to the knob part 271. A second thread adapted to the first thread is formed on the rod 272. The rod 272 at least partially penetrates the valve body 10 and extends into the first water guide cavity 201, and is threadedly connected to the fixed bracket 24.

[0065] like Figures 2 to 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the device also includes a Venturi negative pressure module 30, which is disposed between the first water inlet pipe 11 and the first water outlet pipe 12. The outlet of the Venturi negative pressure module 30 is connected to the inlet of the first water outlet pipe 12 and the inlet of the second water outlet pipe 13, respectively. The Venturi negative pressure module 30 is used to generate negative pressure at the inlet of the second water outlet pipe 13.

[0066] The adaptive drainage device in the above embodiment further defines the negative pressure generated at the inlet of the second outlet pipe 13 by the Venturi negative pressure module 30. Specifically, when the foaming device is in clear water mode, the water flow velocity from the outlet of the Venturi negative pressure module 30 to the inlet of the first outlet pipe 12 is relatively large. The negative pressure generated at the inlet of the second outlet pipe 13 by the Venturi negative pressure module 30 forms an adsorption effect on the top plate 22, so that the top plate 22 is firmly sealed on the first through hole 202. When the foaming device is in foaming mode, the water flow velocity at the inlet of the first outlet pipe 12 decreases. Part of the clean water discharged from the outlet of the Venturi negative pressure module 30 enters the first outlet pipe 12, and the other part enters the first through hole 202. Since the water pressure is greater than the elastic force of the spring 23, the top plate 22 is pushed away from the first through hole 202. The Venturi negative pressure module 30 forms a negative pressure zone at the inlet of the second outlet pipe 13, which can increase the drainage sensitivity of the device.

[0067] like Figures 2 to 4 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the Venturi negative pressure module 30 includes a first housing 31 and a Venturi tube 32. The first housing 31 is sleeved on the periphery of the Venturi tube 32. The first housing 31 is connected to the first inlet pipe 11 and the first outlet pipe 12 respectively. A second water guiding cavity 301 is formed between the outlet of the Venturi tube 32 and the inlet of the first outlet pipe 12. A first notch 302 is provided on the first housing 31. The second water guiding cavity 301, the first notch 302, and the inlet of the second outlet pipe 13 are connected in sequence.

[0068] like Figure 1 and Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the outlet of the second water outlet pipe 13 is connected to a drain tap 40, and the drain tap 40 can switch whether the second water outlet pipe 13 is connected to the external atmosphere.

[0069] The adaptive drainage device in the above embodiment further limits the connection between the outlet of the second water outlet pipe 13 and the drain faucet 40. By adding the drain faucet 40, the connection between the second water outlet pipe 13 and the external atmosphere can be manually switched. When the drain faucet 40 is closed, the adaptive drainage valve device 200 will not discharge water from the drain faucet 40 regardless of the working mode of the foaming device. This can avoid the risk of water leakage at the outlet of the second water outlet pipe 13 when the foaming device is in the clean water mode, thus improving the user experience.

[0070] like Figure 6 As shown, this embodiment provides a foaming device, which includes a main unit 100 and the aforementioned adaptive drain valve device 200. The outlet of the first water outlet pipe 12 is connected to the inlet of the main unit 100. The main unit 100 can mix and foam the input water, gas, and liquid. The main unit 100 has a foaming mode and a clean water mode. In the foaming mode, the amount of water output from the first water outlet pipe 12 to the main unit 100 is less than the amount of water output from the first water outlet pipe 12 to the main unit 100 in the clean water mode.

[0071] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An adaptive drain valve device, applied to a foaming device, characterized in that, The foaming device has a clean water mode and a foaming mode; in the clean water mode, the water flow rate input to the foaming device is configured to be higher than that in the foaming mode. The device includes a valve body (10), which has an inlet end and an outlet end, and a valve core (20) is provided between the inlet end and the outlet end; The water inlet includes a first water inlet pipe (11), and the water outlet includes a first water outlet pipe (12) and a second water outlet pipe (13). The first water outlet pipe (12) is connected to the water inlet of the foaming device. The valve core (20) adjusts the opening and closing state of the water outlet according to the water flow speed input to the foaming device. When the valve core (20) is in the first position, the first inlet pipe (11) is connected to the first outlet pipe (12), and the first inlet pipe (11) is cut off from the second outlet pipe (13); when the valve core (20) is in the second position, the first inlet pipe (11) is connected to both the first outlet pipe (12) and the second outlet pipe (13).

2. The adaptive drain valve device according to claim 1, characterized in that, The valve core (20) includes a valve shell (21), a top plate (22), a spring (23), and a fixing bracket (24). The valve shell (21) is inserted into the second water outlet pipe (13). The valve shell (21) forms a first water guiding cavity (201), and a first through hole (202) and a second through hole (203) communicating with the first water guiding cavity (201). The first through hole (202) is connected to the water inlet of the second water outlet pipe (13), and the second through hole (203) is connected to the water outlet of the second water outlet pipe (13). The top plate (22) and the fixed bracket (24) are located at both ends of the first water guiding cavity (201), and the two ends of the spring (23) are respectively connected to the top plate (22) and the fixed bracket (24); when the valve core (20) is in the first position, the top plate (22) blocks the first through hole (202), and when the valve core (20) is in the second position, the top plate (22) moves away from the first through hole (202).

3. The adaptive drain valve device according to claim 2, characterized in that, The valve core (20) also includes a sealing ring (25), which is disposed on the top plate (22) and sandwiched between the first through hole (202) and the top plate (22).

4. The adaptive drain valve device according to claim 2, characterized in that, The valve core (20) also includes a throttle valve (26), which is installed inside the second outlet pipe (13) and is sandwiched between the inlet of the second outlet pipe (13) and the first through hole (202).

5. The adaptive drain valve device according to claim 2, characterized in that, The valve core (20) also includes a pressure regulator (27), which is disposed on the valve body (10) and extends at least partially into the first water guide cavity (201) and is connected to the fixed bracket (24). The pressure regulator (27) is movable relative to the valve body (10) to adjust the initial distance between the fixed bracket (24) and the top plate (22).

6. The adaptive drain valve device (200) according to claim 5, characterized in that, The pressure regulator (27) is threadedly connected to the fixed bracket (24).

7. The adaptive drain valve device according to any one of claims 1-6, characterized in that, The device also includes a Venturi negative pressure module (30), which is disposed between the first inlet pipe (11) and the first outlet pipe (12). The outlet of the Venturi negative pressure module (30) is connected to the inlet of the first outlet pipe (12) and the inlet of the second outlet pipe (13), respectively. The Venturi negative pressure module (30) is used to generate negative pressure at the inlet of the second outlet pipe (13).

8. The adaptive drain valve device according to claim 7, characterized in that, The Venturi negative pressure module (30) includes a first housing (31) and a Venturi tube (32). The first housing (31) is sleeved around the Venturi tube (32). The first housing (31) is connected to the first inlet pipe (11) and the first outlet pipe (12) respectively. A second water guiding cavity (301) is formed between the outlet of the Venturi tube (32) and the inlet of the first outlet pipe (12). A first notch (302) is provided on the first housing (31). The second water guiding cavity (301), the first notch (302) and the inlet of the second outlet pipe (13) are connected in sequence.

9. The adaptive drain valve device according to claim 1, characterized in that, The outlet of the second water outlet pipe (13) is connected to a drain faucet (40), which can switch whether the second water outlet pipe (13) is connected to the outside atmosphere.

10. A foaming device, characterized in that, Includes a host (100) and an adaptive drain valve device (200) as described in any one of claims 1-9, wherein the outlet of the first water outlet pipe (12) is connected to the inlet of the host (100), the host (100) can mix and foam the input water, gas and liquid, the host (100) has a foaming mode and a clear water mode, wherein in the foaming mode the amount of water output from the first water outlet pipe (12) to the host (100) is less than the amount of water output from the first water outlet pipe (12) to the host (100) in the clear water mode.

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