Water treatment device and water utilization equipment

Abstract

The utility model relates to the technical field of water purification, in particular to a water treatment device and water consuming equipment, the water treatment device comprises a main body, the main body is provided with an inner cavity, the inner cavity is provided with a treatment cavity, the treatment cavity is provided with a bottom surface, and the treatment cavity is sequentially provided with a treatment area and an anti-freezing expansion area along the direction far away from the bottom surface; the treatment area is communicated with the anti-freezing dilatation area, the treatment area is communicated with a treatment outlet used for guiding water out of the treatment cavity, and the height of the treatment outlet relative to the bottom surface is lower than the height of one end, away from the treatment area, of the anti-freezing dilatation area relative to the bottom surface. When the air temperature is low until the water in the treatment cavity is frozen, due to the existence of the anti-freezing expansion area, the residual water in the treatment cavity can extend to the anti-freezing expansion area from the treatment area after being frozen and expanded, so that the water treatment device is prevented from being exploded, the product structure is simple, and the anti-freezing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water treatment device and water-using equipment. Background Art

[0002] In the prior art, in water-using equipment such as toilets, fish tanks, water dispensers, and washing machines, certain requirements are placed on the water quality of the water used. Therefore, water treatment devices such as filters, scale inhibitors, and water purifiers are often installed. The structure of the existing water treatment device is usually to set a treatment chamber in the water treatment device, and place a water treatment agent in the treatment chamber. When in use, the water from the water pipe first enters the treatment chamber in the water treatment device, and after being treated by the water treatment agent in the treatment chamber, it flows to the water-using equipment. The disadvantages of this water treatment device are:

[0003] 1) After the water treatment device is used, the treatment chamber is often filled with water. In the winter when the temperature is low or in some areas with cold weather all year round, the water in the treatment chamber will freeze, expand in volume, squeeze the wall of the treatment chamber, and cause the water treatment device to burst.

[0004] 2) The water inlet setting of existing water-using equipment is mainly that all water entering the water-using equipment needs to pass through a water treatment device first. However, in some cases, water-using equipment does not require excessively high water quality requirements. For example, during the use of a toilet, washing the human body requires higher water quality requirements, while flushing the toilet only requires regular tap water. This water inlet setting method will cause unnecessary waste of water treatment agents and accelerate the consumption of water treatment agents. Utility Model Content

[0005] The purpose of the embodiments of the utility model is to provide a water treatment device and water-using equipment with a simple structure and good antifreeze effect in view of the existing technical status.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] First, an embodiment of the utility model provides a water treatment device, including a main body, the main body is provided with an inner cavity, the inner cavity is provided with a treatment cavity, the treatment cavity is provided with a bottom surface, and the treatment cavity is provided with a treatment area and an antifreeze expansion area in sequence along the direction away from the bottom surface, the treatment area and the antifreeze expansion area are connected to each other, the treatment area is connected with a treatment outlet for exporting water out of the treatment cavity, and the height of the treatment outlet relative to the bottom surface is lower than the height of one end of the antifreeze expansion area away from the treatment area relative to the bottom surface.

[0008] In some embodiments, the inner cavity is provided with a main water outlet, the end of the treatment cavity away from the bottom surface is provided with a water outlet cylinder, the end of the water outlet cylinder away from the bottom surface is provided with a connecting port for connecting with the main water outlet, the end of the water outlet cylinder close to the bottom surface is provided with a sealing cover, the treatment outlet is provided on the sealing cover, and a floating plug is provided in the water outlet cylinder which can be raised and lowered in a direction close to or away from the treatment outlet, and the floating plug has a first position for blocking the treatment outlet and a second position away from the treatment outlet.

[0009] In some embodiments, the treatment chamber is connected to a treatment inlet for introducing water into the treatment area, the height of the treatment inlet relative to the bottom surface is higher than the height of the treatment area relative to the bottom surface, and the height of the treatment inlet relative to the bottom surface is lower than the height of the antifreeze expansion area away from the treatment area relative to the bottom surface.

[0010] In some embodiments, the inner cavity is provided with relatively independent direct current channel and processing channel, the processing channel is connected with the processing cavity via the processing inlet, the inner cavity is also provided with a main water inlet, the main water inlet is connected with a water circuit switching valve, and the water circuit switching valve has a first water outlet end for communicating with the direct current channel and a second water outlet end for communicating with the processing channel.

[0011] In some embodiments, the inner cavity is provided with a switching channel, and the side wall of the switching channel is provided with a direct current guide hole and a processing guide hole, the direct current guide hole is connected with the direct current channel, and the processing guide hole is connected with the processing channel, the water circuit switching valve is rotatably arranged in the switching channel, and the outer wall of the water circuit switching valve is provided with a direct current blocking end for blocking the direct current guide hole and a processing blocking end for blocking the processing guide hole, the direct current blocking end and the first water outlet end are arranged along the same circumferential direction, and the processing blocking end and the second water outlet end are arranged along the same circumferential direction, and an angle is formed between the radial direction where the first water outlet end is located and the radial direction where the second water outlet end is located.

[0012] In some embodiments, the direct flow channel and the processing channel are parallel to each other, and the processing chamber, the direct flow channel and the processing channel are all arranged on the same side of the water channel switching valve.

[0013] In some embodiments, the water circuit switching valve is connected to a driving member for driving the water circuit switching valve to rotate so as to switch between water outlet from the first water outlet and water outlet from the second water outlet.

[0014] In some embodiments, the water treatment device is also provided with a control mainboard and a water quality detector for performing water quality detection. The water quality detector is arranged between the main water inlet and the water supply source. The water quality detector and the driving component are respectively communicated with the control mainboard.

[0015] In some embodiments, a water treatment agent is provided in the treatment zone.

[0016] Secondly, an embodiment of the utility model also provides a water-using equipment, including the above-mentioned water treatment device.

[0017] The beneficial effects of the embodiments of the utility model are:

[0018] The embodiment of the utility model arranges a processing area and an antifreeze expansion area in sequence in the processing chamber along a direction away from the bottom surface, and makes the height of the processing outlet relative to the bottom surface lower than the height of one end of the antifreeze expansion area away from the processing area relative to the bottom surface, so that after the water flow enters the processing chamber, the water flow can first be treated in the processing area until the liquid level rises to the processing outlet, forming a seal in the processing chamber, and the remaining air is compressed to the antifreeze expansion area to prevent the liquid level in the processing chamber from continuing to rise. At the same time, the water flow treated in the processing area flows out of the processing chamber through the processing outlet, thereby ensuring that there is always a part of the space in the processing chamber (the antifreeze expansion area) occupied by air rather than water. When the temperature is so low that the water in the processing chamber freezes, due to the existence of the antifreeze expansion area, the residual water in the processing chamber can expand after freezing and extend from the processing area to the antifreeze expansion area, thereby preventing the water treatment device from being burst. The product has a simple structure and a good antifreeze effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a water treatment device according to Example 1 of the utility model.

[0020] Figure 2 This is a longitudinal cross-sectional view of the water treatment device of Example 1 of the utility model.

[0021] Figure 3 This is a schematic diagram of the principle of the water treatment device of Example 1 of the utility model (the arrows in the figure represent the direction of water flow).

[0022] Figure 4 It is a longitudinal cross-sectional view of the main body of Example 1 of the utility model.

[0023] Figure 5 This is a transverse cross-sectional view of the water treatment device of Example 1 of the utility model.

[0024] Figure 6 This is a longitudinal cross-sectional view of the main body of Example 2 of the present utility model.

[0025] Figure 7This is a schematic diagram of the principle when the water treatment device of Example 2 of the utility model needs to treat water quality (the arrows in the figure represent the direction of water flow).

[0026] Figure 8 This is a schematic diagram of the principle of the water treatment device in Example 2 of the utility model when there is no need to treat the water quality (the arrows in the figure represent the direction of water flow).

[0027] Fig. 9 This is an exploded view of the water channel switching valve of Example 2 of the utility model.

[0028] Fig.10 This is an exploded view of the water treatment device of Example 2 of the utility model.

[0029] Fig.11 This is a control principle diagram of Example 2 of the utility model. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0031] Example 1

[0032] See also Figures 1 to 4 As shown, the present embodiment discloses a water treatment device, including a main body 1, the main body 1 is provided with an inner cavity 2, the inner cavity 2 is provided with a processing chamber 3, the processing chamber 3 is provided with a bottom surface 31, and the processing chamber 3 is provided with a processing area 32 and an antifreeze expansion area 33 in sequence along the direction away from the bottom surface 31, the processing area 32 and the antifreeze expansion area 33 are interconnected, the processing area 32 is connected to a processing outlet 34 for exporting water out of the processing chamber 3, and the height H1 of the processing outlet 34 relative to the bottom surface 31 is lower than the height H3 of the antifreeze expansion area 33 away from the processing area 32 at one end relative to the bottom surface 31.

[0033] See also Figure 3 and Figure 4 As shown, in this embodiment, after the water flow enters the processing chamber 3, it flows to the bottom surface 31 based on gravity, and the liquid level of the water flow in the processing chamber 3 rises from the bottom surface 31 to the direction away from the bottom surface 31, so that the water flow is treated in the processing area 32 until the liquid level rises to the processing outlet 34, the processing outlet 34 is liquid-sealed, and a seal is formed in the processing chamber 3. The remaining air is compressed to the antifreeze expansion area 33 to prevent the liquid level in the processing chamber 3 from continuing to rise. At the same time, the water flow treated in the processing area 32 flows out of the processing chamber 3 through the processing outlet 34, so that there is always a part of the space in the processing chamber 3 that is occupied by air instead of water.

[0034] When the temperature is low enough for the water in the processing chamber 3 to freeze, due to the existence of the antifreeze expansion area 33, the remaining water in the processing chamber 3 can expand after freezing and extend from the processing area 32 to the antifreeze expansion area 33, thereby preventing the water treatment device from bursting. The product has a simple structure and a good antifreeze effect.

[0035] See also Figure 3 and Figure 5 As shown, the inner cavity 2 is provided with a main water outlet 11, and a water outlet cylinder 35 is provided at one end of the processing chamber 3 away from the bottom surface 31. A connecting port 351 for connecting with the main water outlet 11 is provided at one end of the water outlet cylinder 35 away from the bottom surface 31. A sealing cover 352 is provided at one end of the water outlet cylinder 35 close to the bottom surface 31. The processing outlet 34 is provided on the sealing cover 352. A floating plug 353 which can be raised and lowered in a direction close to or away from the processing outlet 34 is provided in the water outlet cylinder 35. The floating plug 353 has a first position for blocking the processing outlet 34 and a second position away from the processing outlet 34.

[0036] After the water flows into the treatment chamber 3, it rises from the bottom surface 31 toward a direction away from the bottom surface 31, and the water flows for water treatment in the treatment area 32 until the liquid level rises to the treatment outlet 34. The water flows treated in the treatment area 32 impact the floating plug 353 through the treatment outlet 34. The floating plug 353 moves away from the treatment outlet 34 under the action of hydraulic force, and switches from the first position to the second position. The water flows treated in the treatment area 32 are able to enter the water outlet cylinder 35, and flow to the main water outlet 11 through the connecting port 351.

[0037] When water stops flowing into the treatment chamber 3, the floating plug 353 loses the hydraulic impact of the water flow from the treatment outlet 34, and based on its own gravity and the gravity of the water flow in the water outlet tube 35, it falls back to the treatment outlet 34, blocks the treatment outlet 34 again, and switches from the second position to the first position to prevent water backflow.

[0038] Therefore, through the mutual cooperation between the water outlet cylinder 35, the cover 352 and the floating plug 353, a one-way valve structure is formed to realize the one-way flow of water from the treatment chamber 3 to the connecting port 351, prevent the water from flowing back, and avoid the water treatment agent in the treatment area 32 from being consumed unnecessarily.

[0039] Exemplarily, the sealing cap 352 and the floating plug 353 may be made of sealing materials, such as, but not limited to, silicone, to enhance the sealing effect of the floating plug 353 .

[0040] See also Figure 2 and Figure 4 As shown, the treatment chamber 3 is connected to a treatment inlet 36 for introducing water into the treatment area 32, and the height H2 of the treatment inlet 36 relative to the bottom surface 31 is higher than the height of the treatment area 32 relative to the bottom surface 31, and the height H2 of the treatment inlet 36 relative to the bottom surface 31 is lower than the height H3 of the end of the antifreeze expansion area 33 away from the treatment area 32 relative to the bottom surface 31, so that water can flow into the treatment chamber 3 more smoothly.

[0041] This embodiment also discloses a water-using device, comprising the above-mentioned water treatment device.

[0042] The water treatment device of this embodiment can be used as a scale inhibitor, a filter or a water purifier, but is not limited thereto. The user equipment can be a toilet, a shower, a fish tank, a water dispenser or a washing machine, but is not limited thereto.

[0043] Example 2

[0044] See also Figures 6 to 8 and Fig.10 As shown, the difference between this embodiment and embodiment 1 is that the inner cavity 2 is provided with a relatively independent direct current channel 4 and a processing channel 5, the processing channel 5 is connected with the processing chamber 3 via the processing inlet 36, and the inner cavity 2 is also provided with a main water inlet 12, and the main water inlet 12 is connected to a water circuit switching valve 7, and the water circuit switching valve 7 has a first water outlet end 71 for conducting with the direct current channel 4 and a second water outlet end 72 for conducting with the processing channel 5.

[0045] When there is no need to treat the water quality, the first water outlet end 71 of the water circuit switching valve 7 is controlled to be in an open state, and the second water outlet end 72 of the water circuit switching valve 7 is in a closed state. At this time, the water circuit switching valve 7 is respectively connected to the DC channel 4 and the main water inlet 12. After the water flows into the main water inlet 12, it flows through the first water outlet end 71 of the water circuit switching valve 7, and flows from the first water outlet end 71 to the DC channel 4. The water does not need to pass through the treatment chamber 3 and is directly discharged for use.

[0046] When water treatment is required, the first water outlet end 71 of the water circuit switching valve 7 is controlled to be in a closed state, and the second water outlet end 72 of the water circuit switching valve 7 is in an open state. At this time, the water circuit switching valve 7 is respectively connected to the processing channel 5 and the main water inlet 12. After the water flows into the main water inlet 12, it flows through the second water outlet end 72 of the water circuit switching valve 7, and flows from the second water outlet end 72 to the processing channel 5. After entering the processing channel 5, the water flows into the processing chamber 3 through the processing inlet 36 for water treatment, so that the water can be used after water treatment.

[0047] In this embodiment, by setting relatively independent direct current channel 4 and treatment channel 5 in the inner cavity 2, a direct current waterway from the autonomous water inlet 12 flowing to the direct current channel 4 and a treatment waterway from the autonomous water inlet 12 flowing to the treatment channel 5 and the treatment chamber 3 are formed in the inner cavity 2, forming a dual waterway structure, and the waterway switching valve 7 provided with a first water outlet end 71 and a second water outlet end 72 is used to select which waterway the water flows to. The user can choose whether to flow to the direct current waterway or the treatment waterway according to the water quality requirements, thereby effectively reducing unnecessary waste of water treatment agents, meeting different water use requirements, and making the device more flexible in application.

[0048] See also Figures 7 to 9As shown, the inner cavity 2 is provided with a switching channel 6, and the side wall of the switching channel 6 is provided with a direct current guide hole 61 and a processing guide hole 62. The direct current guide hole 61 is connected to the direct current channel 4, and the processing guide hole 62 is connected to the processing channel 5. The water channel switching valve 7 is rotatably arranged in the switching channel 6, and the outer wall of the water channel switching valve 7 is provided with a direct current blocking end 73 for blocking the direct current guide hole 61 and a processing blocking end 74 for blocking the processing guide hole 62. The direct current blocking end 73 and the first water outlet end 71 are arranged along the same circumferential direction, and the processing blocking end 74 and the second water outlet end 72 are arranged along the same circumferential direction. An angle is formed between the radial direction where the first water outlet end 71 is located and the radial direction where the second water outlet end 72 is located, that is, the radial direction where the first water outlet end 71 is located and the radial direction where the second water outlet end 72 is located are not parallel to each other. By way of example, in this embodiment, the angle between the radial direction where the first water outlet end 71 is located and the radial direction where the second water outlet end 72 is located is 90°, but is not limited to this.

[0049] When there is no need to treat the water quality, rotate the water circuit switching valve 7, and the water circuit switching valve 7 rotates relative to the switching channel 6 until the first water outlet end 71 is aligned with the DC guide hole 61. At this time, the treatment blocking end 74 is aligned with the treatment guide hole 62 to block the treatment guide hole 62, thereby controlling the first water outlet end 71 of the water circuit switching valve 7 to be in an open state, and the second water outlet end 72 of the water circuit switching valve 7 to be in a closed state. At this time, the water circuit switching valve 7 is respectively connected to the DC channel 4 and the main water inlet 12. After the water flows into the main water inlet 12, it flows through the first water outlet end 71 of the water circuit switching valve 7, and flows from the first water outlet end 71 to the DC channel 4. The water does not need to pass through the treatment chamber 3 and is directly discharged for use.

[0050] When water treatment is required, the water circuit switching valve 7 is rotated again, and the water circuit switching valve 7 rotates relative to the switching channel 6 until the second water outlet end 72 is aligned with the processing guide hole 62. At this time, the DC blocking end 73 is aligned with the DC guide hole 61 to block the DC guide hole 61, thereby controlling the first water outlet end 71 of the water circuit switching valve 7 to be in a closed state, and the second water outlet end 72 of the water circuit switching valve 7 to be in an open state. At this time, the water circuit switching valve 7 is respectively connected to the processing channel 5 and the main water inlet 12. After the water flows into the main water inlet 12, it flows through the second water outlet end 72 of the water circuit switching valve 7, and flows from the second water outlet end 72 to the processing channel 5. After entering the processing channel 5, the water flows into the processing chamber 3 through the processing inlet 36 for water treatment, so that the water flow can be used after water treatment.

[0051] Therefore, through the mutual cooperation between the switching channel 6 and the water circuit switching valve 7, the water circuit switching valve 7 can be simply and quickly switched between the two water outlet modes of water outlet at the first water outlet end 71 and water outlet at the second water outlet end 72 only by rotating the water circuit switching valve 7. The switching between the two different water circuits is simple and fast, and the overall structure is compact, which is conducive to reducing the overall occupied area of ​​the device.

[0052] See also Figure 6 and Figure 7 As shown, the direct current channel 4 and the processing channel 5 are parallel to each other, and the processing chamber 3, the direct current channel 4 and the processing channel 5 are all arranged on the same side of the water channel switching valve 7. The overall structure is compact, which is conducive to reducing the overall occupancy area of ​​the device. Compared with existing commercially available products, under the same overall occupancy area conditions, more space can be freed up for use as the processing area 32, and more water treatment agents can be stored, thereby improving the water treatment capacity.

[0053] In one embodiment, the waterway switching valve 7 is rotated manually.

[0054] See also Figure 7 and Fig.10 As shown, in another embodiment, the water circuit switching valve 7 is rotated electrically. Specifically, the water circuit switching valve 7 is connected to a driving member 8 for driving the water circuit switching valve 7 to rotate so that it switches between water outlet from the first water outlet end 71 and water outlet from the second water outlet end 72. In this embodiment, the driving member 8 is a motor, and the rotating shaft of the motor is arranged along the axial direction of the water circuit switching valve 7, and the motor is arranged at one end of the water circuit switching valve 7 away from the main water inlet 12.

[0055] One side of the main body 1 is recessed inward to form a mounting groove for mounting the driving member 8. The driving member 8 is mounted in the mounting groove by screws, further improving the compactness of the overall structure and reducing the overall occupied area of ​​the device.

[0056] A water treatment agent (not shown) is provided in the treatment area 32. For example, the water treatment agent may be an antiscalant, a sterilizing agent or a water purifying agent, but is not limited thereto.

[0057] Preferably, the water treatment agent is in granular form.

[0058] The water treatment device is also provided with a control mainboard and a water quality detector (not shown) for water quality detection. The water quality detector is arranged between the main water inlet 12 and the water supply source. The water quality detector and the driving member 8 are respectively connected to the control mainboard for communication.

[0059] By controlling the mutual coordination among the main board, the water quality detector and the driving component 8, the water circuit switching valve 7 can automatically switch between the two water outlet modes of the first water outlet end 71 and the second water outlet end 72 according to the water quality conditions, which is more intelligent and convenient to use.

[0060] When in use, when the entire water system starts working, the control mainboard enters the working state. First, it determines whether the control mainboard receives the remote control signal to start the water treatment function:

[0061] 1) When the control mainboard determines that a remote control signal is received, the control mainboard controls the driving member 8 to rotate, so as to drive the waterway switching valve 7 to rotate, so that the second water outlet end 72 is aligned with the processing guide hole 62. At this time, the DC blocking end 73 is aligned with the DC guide hole 61 to block the DC guide hole 61, thereby controlling the first water outlet end 71 of the waterway switching valve 7 to be in a closed state, and the second water outlet end 72 of the waterway switching valve 7 to be in an open state, and the waterway switching valve 7 uses the second water outlet end 72 to discharge water;

[0062] 2) When the control mainboard determines that no remote control signal is received, the water quality detector starts to collect water quality data, and the control mainboard receives and determines whether the water quality data exceeds the set threshold. When the water quality data is greater than or equal to the set threshold, the control mainboard controls the driving component 8 to rotate to drive the water circuit switching valve 7 to rotate, and the water circuit switching valve 7 uses the second water outlet end 72 to discharge water; when the water quality data is less than the set threshold, the control mainboard controls the driving component 8 to rotate to drive the water circuit switching valve 7 to rotate, and the water circuit switching valve 7 uses the first water outlet end 71 to discharge water.

[0063] For details, see Fig.11 As shown, in this embodiment, taking the water treatment device as a scale inhibitor as an example, the control steps are as follows:

[0064] When the entire water system starts working, the control mainboard enters the working state. First, it is determined whether the control mainboard has received the remote control signal to start the anti-scaling function:

[0065] 1) When the control mainboard determines that a remote control signal is received, the control mainboard controls the driving member 8 to rotate, so as to drive the waterway switching valve 7 to rotate, so that the second water outlet end 72 is aligned with the treatment guide hole 62. At this time, the DC blocking end 73 is aligned with the DC guide hole 61 to block the DC guide hole 61, thereby controlling the first water outlet end 71 of the waterway switching valve 7 to be in a closed state, and the second water outlet end 72 of the waterway switching valve 7 to be in an open state. The waterway switching valve 7 uses the second water outlet end 72 to discharge water, and the scale prevention function is turned on;

[0066] 2) When the control mainboard determines that no remote control signal is received, the water quality detector starts to collect water quality data. Specifically, the water quality detector collects the calcium and magnesium ion concentrations in the water, and the control mainboard receives and determines whether the water quality data exceeds the set threshold. When the water quality data is greater than or equal to 120 mg / L, the control mainboard controls the driving component 8 to rotate to drive the water circuit switching valve 7 to rotate, and the water circuit switching valve 7 uses the second water outlet 72 to discharge water; when the water quality data is less than 120 mg / L, the control mainboard controls the driving component 8 to rotate to drive the water circuit switching valve 7 to rotate, and the water circuit switching valve 7 uses the first water outlet 71 to discharge water. At this time, the scale prevention function is closed.

[0067] Of course, the above illustrations are only preferred implementation modes of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes made to the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water treatment device, comprising a main body, wherein the main body is provided with an inner cavity, characterized in that: The inner cavity is provided with a processing chamber, the processing chamber is provided with a bottom surface, and the processing chamber is provided with a processing area and an antifreeze expansion area in sequence along the direction away from the bottom surface, the processing area and the antifreeze expansion area are connected with each other, the processing area is connected with a processing outlet for guiding water out of the processing chamber, and the height of the processing outlet relative to the bottom surface is lower than the height of one end of the antifreeze expansion area away from the processing area relative to the bottom surface.

2. The water treatment device according to claim 1, characterized in that: The inner cavity is provided with a main water outlet, the end of the treatment cavity away from the bottom surface is provided with a water outlet cylinder, the end of the water outlet cylinder away from the bottom surface is provided with a connecting port for connecting with the main water outlet, the end of the water outlet cylinder close to the bottom surface is provided with a sealing cover, the treatment outlet is provided on the sealing cover, and a floating plug is provided in the water outlet cylinder which can be raised and lowered in a direction close to or away from the treatment outlet, and the floating plug has a first position for blocking the treatment outlet and a second position away from the treatment outlet.

3. The water treatment device according to claim 1, characterized in that: The treatment chamber is connected to a treatment inlet for introducing water into the treatment area, the height of the treatment inlet relative to the bottom surface is higher than the height of the treatment area relative to the bottom surface, and the height of the treatment inlet relative to the bottom surface is lower than the height of one end of the antifreeze expansion area away from the treatment area relative to the bottom surface.

4. The water treatment device according to claim 3, characterized in that: The inner cavity is provided with relatively independent direct current channel and processing channel, the processing channel is connected with the processing cavity via the processing inlet, the inner cavity is also provided with a main water inlet, the main water inlet is connected with a water circuit switching valve, the water circuit switching valve has a first water outlet end for conducting with the direct current channel and a second water outlet end for conducting with the processing channel.

5. The water treatment device according to claim 4, characterized in that: The inner cavity is provided with a switching channel, and the side wall of the switching channel is provided with a DC guide hole and a processing guide hole, the DC guide hole is connected with the DC channel, and the processing guide hole is connected with the processing channel, the water circuit switching valve is rotatably arranged in the switching channel, and the outer wall of the water circuit switching valve is provided with a DC blocking end for blocking the DC guide hole and a processing blocking end for blocking the processing guide hole, the DC blocking end and the first water outlet end are arranged along the same circumferential direction, and the processing blocking end and the second water outlet end are arranged along the same circumferential direction, and an angle is formed between the radial direction where the first water outlet end is located and the radial direction where the second water outlet end is located.

6. The water treatment device according to claim 4, characterized in that: The direct current channel and the processing channel are parallel to each other, and the processing chamber, the direct current channel and the processing channel are all arranged on the same side of the water channel switching valve.

7. The water treatment device according to claim 4, characterized in that: The water channel switching valve is connected to a driving member for driving the water channel switching valve to rotate so as to switch between water outlet from the first water outlet end and water outlet from the second water outlet end.

8. The water treatment device according to claim 7, characterized in that: The water treatment device is also provided with a control mainboard and a water quality detector for water quality detection. The water quality detector is arranged between the main water inlet and the water supply source. The water quality detector and the driving member are respectively connected to the control mainboard for communication.

9. The water treatment device according to claim 1, characterized in that: A water treatment agent is arranged in the treatment area.

10. A water-using device, characterized in that: Comprising the water treatment device according to any one of claims 1 to 9.

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