Filtering device and intelligent toilet water supply assembly

Abstract

A filter device and a water supply assembly of a smart toilet, comprising a valve assembly having a first position and a second position, when water is supplied, the valve assembly is subjected to buoyancy and is in the first position, the communication port is opened to make the primary raw water waterway communicate with the secondary raw water waterway, and the filter device normally supplies water; when water supply is stopped or water supply fails, negative pressure occurs in the primary raw water waterway, the negative pressure first sucks the water in the water storage cavity, the valve assembly is lowered with the liquid surface and is in the second position, the communication port is closed to make the primary raw water waterway and the secondary raw water waterway not communicate, the dirt deposited on the surface of the filter element and the descaling medium are prevented from being sucked back to the primary raw water waterway, and the safety of water use of a user is ensured.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and more particularly to a filtration device and a smart toilet water supply component. Background Technology

[0002] The body cleaning function is a key feature of smart toilets and is highly favored by users. However, due to varying water quality in different regions, a pre-filter is usually installed at the water inlet of the smart toilet to ensure stable water quality and prevent scale buildup. After a period of use, a large amount of dirt accumulates on the filter element. In addition, some pre-filters contain acidic soluble descaling media. When an anomaly occurs in the water supply system, causing negative pressure in the water supply pipes, the dirt and acidic descaling media deposited on the filter element surface can be drawn back into the water supply system, contaminating the system and endangering the user's water safety. Summary of the Invention

[0003] This invention provides a filtration device that improves the problem of dirt and descaling media on the surface of the filter element being abnormally sucked into the water supply system, thus ensuring the safety of users' water use.

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

[0005] A filtration device, comprising:

[0006] The shell has an inlet and an outlet that are interconnected.

[0007] A water storage component is located on the upper part of the shell. A water storage cavity is provided on the first side of the water storage component. The water storage cavity is connected to the water inlet to form a primary raw water channel. A secondary raw water channel is formed between the second side of the water storage component and the shell. The water storage component is also provided with a connecting port that connects the primary raw water channel and the secondary raw water channel.

[0008] The filter element is installed in the secondary raw water circuit, and the secondary raw water circuit is connected to a flow guide channel. Each flow guide channel is connected to the outlet to form the outlet water circuit; and,

[0009] A valve assembly is disposed between the housing and the water storage component, and the valve assembly floats up and down with the change of liquid level in the water storage chamber to have a first position and a second position.

[0010] When water is supplied, the water level in the storage chamber rises, causing the valve assembly to be in the first position due to buoyancy, thus opening the connection port; when negative pressure is generated in the primary raw water circuit, water in the storage chamber is drawn in, causing the water level in the storage chamber to drop, causing the valve assembly to be in the second position, thus closing the connection port.

[0011] Furthermore, the shell includes an outer shell and an inner shell disposed within the outer shell, and the gap between the outer shell and the inner shell constitutes part of the primary raw water channel;

[0012] The water storage component is located on the upper part of the inner shell, so that the space between the first side of the water storage component and the outer shell constitutes a partial primary water channel. The bottom of the inner shell has a ring array of several flow channels, and at least part of the flow channels have an angle with the axial direction of the inner shell.

[0013] Furthermore, the flow channel includes a first flow section and a second flow section connected sequentially along the water outlet direction. One of the first flow section and the second flow section has an angle with the axial direction of the inner shell, and the other is parallel to the axial direction of the inner shell.

[0014] Furthermore, the water storage component includes an outer partition and an inner partition connected to the inner side of the outer partition. The space between the outer partition and the inner partition forms a water storage cavity. The through channel enclosed by the inner partition forms a communication port. Part of the valve assembly is located inside the water storage cavity, allowing the valve assembly to float up and down under the buoyancy of the water flow inside the water storage cavity.

[0015] Furthermore, the water storage height of the water storage chamber is greater than the movement stroke of the valve assembly, and the length of the valve assembly located in the water storage chamber is greater than the movement stroke of the valve assembly.

[0016] Furthermore, the valve assembly includes a valve body, a first side of which is used to open and close the communication port, and a first guide post located in the water storage chamber on the first side of the valve body. The length of the first guide post is greater than the movement stroke of the valve body. A guide plate is provided on the top of the outer shell, and the valve body is movably disposed in the guide groove enclosed by the guide plate. The guide groove is used to guide the movement of the first guide post in the vertical direction.

[0017] Furthermore, the first guide post is equipped with a float.

[0018] Furthermore, the top of the outer casing is provided with an air intake port, and the second side of the valve body is provided with a second guide post that inserts into the air intake port. There is a first flow gap between the second guide post and the air intake port. The outer side of the valve body is provided with a Y-shaped sealing ring that opens along the air intake direction of the air intake port. The valve body is sealed to the side wall of the guide groove through the Y-shaped sealing ring, and there is a second flow gap between the outer side of the first guide post and the side wall of the guide groove.

[0019] When negative pressure is generated in the primary raw water circuit, it continuously draws water from the storage chamber, causing the valve body to close the connection port as the liquid level drops. Under the action of negative pressure, the opening of the Y-shaped sealing ring shrinks to connect the first and second flow gaps.

[0020] Furthermore, the upper part of the inner shell is provided with several slots, and the outer side of the water storage component is provided with several protrusions connected to the slots. The height of the slots is greater than the height of the protrusions, so that a water passage gap is formed between the protrusions and the slots, allowing the incoming water to flow into the water storage cavity through the water passage gap.

[0021] Furthermore, the shell also includes a connector and an adapter. The lower part of the inner shell is provided with a connector, and the lower part of the outer shell and the connector is connected to the adapter. The space between the outer wall of the connector and the inner wall of the adapter constitutes a primary raw water channel. The internal channels of the connector and the internal channels of the adapter are interconnected to form an outlet water channel. The adapter is provided with an inlet and an outlet.

[0022] Furthermore, the outer wall of the connector is provided with a plurality of first guide grooves, and the outer wall of the inner shell is provided with a plurality of second guide grooves connected to the corresponding slots, with the first guide grooves connected to the second guide grooves.

[0023] Furthermore, the filter element contains a water-soluble descaling medium, which is a strongly acidic medium.

[0024] A smart toilet water supply component includes an angle valve with two water outlets and a filter device as described above, one of which is connected to the inlet of the filter device and the other water outlet is connected to the toilet flushing system.

[0025] The beneficial effects of this invention are:

[0026] 1. The present invention proposes a filtration device, including a valve assembly having a first position and a second position. When water is introduced, the valve assembly is buoyed and positioned in the first position, opening the connection port to connect the primary raw water circuit to the secondary raw water circuit, and the filtration device outputs water normally. When water intake stops or a water intake failure occurs, if negative pressure occurs in the primary raw water, the negative pressure first draws water from the water storage chamber, causing the valve assembly to drop with the liquid level to the second position, closing the connection port to prevent the primary and secondary raw water circuits from being connected, thus avoiding the backflow of dirt and descaling media deposited on the filter element surface into the primary raw water circuit, and ensuring the user's water safety.

[0027] 2. The filtration device proposed in this invention has several flow guiding channels arranged in a ring at the bottom of the inner shell. At least part of the flow guiding channels are at an angle to the axial direction of the inner shell, which changes the flow direction of the water and reduces the flow velocity, preventing the water from being directly discharged from the inner shell along the axial direction. This prolongs the residence time of the water in the inner shell. When the filter element contains soluble descaling medium, it enhances the mixing effect between the water flow and the descaling medium, thereby improving the descaling effect on the internal pipes. At the same time, the reduced water flow velocity at the outlet of the inner shell increases the contact reaction time between the clean water containing the descaling medium and the scale of the same flow rate, further improving the descaling effect.

[0028] 3. The filter device proposed in this invention has a valve assembly located in the water storage chamber, and the length of the valve assembly in the water storage chamber is greater than the movement stroke of the valve assembly, ensuring that the valve assembly can move to the second position under the action of water buoyancy.

[0029] 4. The present invention proposes a filtration device, wherein the valve assembly includes a valve body, the valve body is provided with a first guide post located in the water storage chamber, the top of the outer shell is provided with a guide plate, the valve body is movably disposed in the guide groove surrounded by the guide plate, and the side wall of the guide groove is used to guide the movement of the first guide post in the vertical direction to avoid the valve body tilting during the lifting and lowering process, so as to ensure that the valve body closes the communication port.

[0030] 5. The filtering device proposed in this invention has a float on the first guide post to further accelerate the upward movement of the valve body, thereby accelerating the opening of the connection port.

[0031] 6. The present invention proposes a filtration device, wherein the outer shell is provided with an air intake port, the valve body is provided with a second guide post inserted into the air intake port, and the outer side of the valve body is provided with a Y-shaped sealing ring that opens in the air intake direction, so that the valve body seals and adapts to the guide plate. The Y-shaped sealing ring deforms under negative pressure, so that the first flow gap connects with the second flow gap, allowing atmospheric air to enter the primary raw water circuit and preventing the negative pressure from sucking water in the secondary raw water circuit. During normal water supply, the Y-shaped sealing ring resets and closes the connection between the first and second flow gaps, so that raw water cannot flow out from the air intake port.

[0032] 7. The present invention proposes a filtration device in which the upper part of the inner shell is provided with several slots and the outer side of the water storage component is provided with several protrusions connected to the slots, and the height of the slots is greater than the height of the protrusions, so that the raw water can flow into the water storage cavity through the slots.

[0033] 8. The present invention proposes a filtration device in which the outer wall of the connector is provided with a plurality of first guide grooves and the outer wall of the inner shell is provided with a plurality of second guide grooves connected to the corresponding slots. The first guide grooves are connected to the second guide grooves. The raw water flows evenly to the second guide grooves through the first guide grooves and flows evenly into the water storage chamber through the second guide grooves. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a filtration device according to the present invention;

[0036] Figure 2 This is a cross-sectional view of a filtering device according to the present invention;

[0037] Figure 3 This is an exploded view of a filtration device according to the present invention;

[0038] Figure 4 This is a schematic diagram of the water storage component of a filtration device according to the present invention;

[0039] Figure 5 This is a cross-sectional view of the water storage component of a filtration device according to the present invention;

[0040] Figure 6 This is one of the schematic diagrams of the inner shell of a filtration device according to the present invention;

[0041] Figure 7 This is a second schematic diagram of the inner shell of a filtration device according to the present invention;

[0042] Figure 8 for Figure 7 Sectional view along line AA;

[0043] Figure 9 This is a schematic diagram of the connector of a filtration device according to the present invention;

[0044] Figure 10 This is a schematic diagram of a valve assembly of a filtration device according to the present invention;

[0045] Figure 11 This is a cross-sectional view of the outer casing of a filtering device according to the present invention;

[0046] Figure 12 This is a schematic diagram of the valve assembly of a filter device according to the present invention in a first position;

[0047] Figure 13 for Figure 12 Enlarged view of a section at point A in the middle;

[0048] Figure 14 This is a schematic diagram of the valve assembly of a filter device according to the present invention in a second position;

[0049] Figure 15 for Figure 14 Enlarged view of a section at point B in the middle;

[0050] Figure 16 This is a schematic diagram of another embodiment of a filtration device according to the present invention;

[0051] Figure 17 This is an exploded view of another embodiment of a filtration device according to the present invention;

[0052] Figure 18 This is a schematic diagram of a smart toilet water supply component according to the present invention;

[0053] In the diagram, 10 is the outer shell; 101 is the air intake; 102 is the guide plate; 20 is the inner shell; 201 is the flow channel; 2011 is the first flow section; 2012 is the second flow section; 202 is the slot; 30 is the water storage component; 301 is the inner partition; 302 is the outer partition; 303 is the water storage chamber; 304 is the connecting port; 305 is the protrusion; 40 is the filter element; 50 is the valve assembly; 501 is the valve body; 5011 is the first flow channel. 5012, Second guide post; 502, Sealing gasket; 503, Y-type sealing ring; 504, Float; 60, Connector; 70, Adapter; 801, First guide channel; 802, Second guide channel; 901, Primary raw water circuit; 902, Secondary raw water circuit; 100, Outlet water circuit; 1101, First flow gap; 1102, Second flow gap; 120, Electronic cover plate; 130, Angle valve. Detailed Implementation

[0054] Example 1

[0055] A filtration device, comprising:

[0056] The shell has an inlet and an outlet that are interconnected.

[0057] A water storage component 30 is located on the upper part of the shell. A water storage cavity 303 is provided on the first side of the water storage component 30. The water storage cavity 303 is connected to the water inlet to form a primary raw water channel 901. A secondary raw water channel 902 is formed between the second side of the water storage component 30 and the shell. The water storage component 30 is also provided with a connecting port 304 connecting the primary raw water channel 901 and the secondary raw water channel 902.

[0058] Filter element 40 is located inside the housing, and the secondary raw water passage 902 is connected to a guide channel 201, which in turn connects to the outlet to form the outlet water passage 100. Filter element 40 can be made of citric acid to remove scale buildup in the internal water passages of the electronic cover, or it can be made of conventional filter media such as PP cotton or activated carbon for filtering the incoming water.

[0059] The valve assembly 50 is disposed between the housing and the water storage component 30, and the valve assembly 50 floats up and down with the change of liquid level in the water storage chamber 303 to have a first position and a second position.

[0060] During water supply, the water level in the storage chamber 303 rises, causing the valve assembly 50 to be in the first position due to buoyancy, thus opening the connection port 304. When water supply stops or malfunctions, causing negative pressure in the primary raw water, the negative pressure first draws water from the storage chamber 303, causing the valve assembly 50 to drop to the second position with the liquid level, closing the connection port 304 and preventing the primary raw water circuit 901 and the secondary raw water circuit 902 from connecting. The filter element 40 contains a water-soluble descaling medium, which is strongly acidic, used to clean scale in the water circuit and toilet spray bar, preventing acidic substances from flowing back into the primary raw water circuit 901. In other embodiments, the filter element 40 can also use conventional filter materials such as PP cotton or activated carbon to prevent dirt deposited on the surface of the filter element 40 from being drawn back into the primary raw water circuit 901, ensuring user water safety.

[0061] In this embodiment, the housing includes an outer shell 10 and an inner shell 20 disposed within the outer shell 10. The gap between the outer shell 10 and the inner shell 20 constitutes a partial primary raw water channel 901. A water storage component 30 is disposed on the upper part of the inner shell 20, such that the space between the first side of the water storage component 30 and the outer shell 10 constitutes a partial primary raw water channel 901. The bottom of the inner shell 20 has a plurality of flow channels 201 arranged in a ring, and at least part of the flow channels 201 have an angle with the axial direction of the inner shell 20.

[0062] like Figure 8 As shown, the flow channel 201 includes a first flow section 2011 and a second flow section 2012 connected sequentially along the water outlet direction. One of the first flow section 2011 and the second flow section 2012 forms an angle with the axial direction of the inner shell 20, and the other is parallel to the axial direction of the inner shell 20. Specifically, the first flow section 2011 is a horizontal section perpendicular to the axial direction of the inner shell 20 or an inclined section that is not perpendicular to the axial direction of the inner shell 20. The second flow section 2012 is a vertical section parallel to the axial direction of the inner shell 20. One end of the first flow section 2011 is connected to the internal space of the inner shell 20, and the other end of the first flow section 2011 is connected to the second flow section 2012. When water exits from the inner shell 20, it flows sequentially through the first guide section 2011 and the second guide section 2012, thereby changing the flow direction and reducing the flow velocity. This prevents the water from being directly discharged from the inner shell 20 along the axial direction, thus extending the residence time of the water within the inner shell 20. When the filter element 40 uses a soluble descaling medium, the mixing effect between the water flow and the descaling medium is enhanced, thereby improving the descaling effect on the internal pipes. Simultaneously, the reduced water flow velocity at the inner shell 20 increases the contact reaction time between the clean water containing the descaling medium and the scale, further improving the descaling effect. In other embodiments, the guide channel 201 may also be entirely composed of inclined sections not perpendicular to the axial direction of the inner shell 20.

[0063] Figure 4 and Figure 5The water storage component 30 is shown to include an outer partition 302 and an inner partition 301 connected to the inner side of the outer partition 302. The space between the outer partition 302 and the inner partition 301 forms a water storage cavity 303. The through channel enclosed by the inner partition 301 forms a communication port 304. A portion of the valve assembly 50 is located within the water storage cavity 303. The water storage height of the water storage cavity 303 is greater than the travel distance of the valve assembly 50, and the length of the valve assembly 50 within the water storage cavity 303 is greater than the travel distance of the valve assembly 50, ensuring that the valve assembly 50 can move to a second position under the buoyancy of the water flow. Specifically, Figure 12 This shows that when the valve assembly 50 is in the first position, the distance between the valve assembly 50 and the bottom of the water storage chamber 303 is D2. Figure 14 It is shown that when the valve assembly 50 is in the second position, the distance between the valve assembly 50 and the bottom of the water storage chamber 303 is D1, the stroke of the valve assembly 50 is D2-D1, and the water storage height of the water storage chamber 303 is H. Therefore, H>D2-D1.

[0064] Figure 10 The valve assembly 50 is shown. Specifically, the valve assembly 50 includes a valve body 501. A first side of the valve body 501 is used to open and close the communication port 304. The first side of the valve body 501 is provided with a first guide post 5011 located in the water storage chamber 303. The length of the first guide post 5011 is greater than the travel of the valve body 501. A guide plate 102 is provided on the top of the outer casing 10. The valve body 501 is movably disposed within a guide groove enclosed by the guide plate 102. The guide groove is used to guide the movement of the first guide post 5011 in the vertical direction, preventing the valve body 501 from tilting during the lifting and lowering process, thereby ensuring that the valve body 501 closes the communication port 304. Furthermore, the first guide post 5011 is provided with a float 504 to further accelerate the upward movement of the valve body 501, thereby accelerating the opening speed of the communication port 304.

[0065] Figure 11 The top of the housing 10 is shown to have an air intake 101. Figure 10 The valve body 501 is shown to have a second guide post 5012 on its second side, which is inserted into the intake port 101. Figure 12 and Figure 14 The diagram shows a first flow gap 1101 between the second guide post 5012 and the air intake 101, and a second flow gap 1102 between the outer facade of the first guide post 5011 and the side wall of the guide groove. Figure 13 and Figure 15 The outer side of the valve body 501 is shown to have a Y-shaped sealing ring 503 that opens in the air intake direction of the air intake port 101. The Y-shaped sealing ring 503 is sealed to the side wall of the guide groove.

[0066] When a negative pressure is generated in the primary raw water circuit 901, continuously drawing water from the storage chamber 303, causing the liquid level to drop below the lower edge of the guide plate 102, the valve body 501 descends with the liquid level, thereby opening the air intake 101. The opening of the Y-shaped sealing ring 503 narrows to connect the first flow gap 1101 and the second flow gap 1102. At this time, atmospheric air can enter the primary raw water circuit 901, preventing the negative pressure from drawing water from the secondary raw water circuit 902. During normal water supply, the Y-shaped sealing ring 503 resets, thereby closing the connection between the first flow gap 1101 and the second flow gap 1102, and the valve body 501 floats up to close the air intake 101, preventing raw water from flowing out of the air intake 101.

[0067] Specifically, during normal water supply, the Y-shaped sealing ring 503 naturally unfolds to seal against the guide groove, preventing raw water from flowing out. Figure 12 and Figure 13 As shown; due to an abnormal water supply, the raw water circuit stops supplying water. At this time, a negative pressure is generated in the primary raw water circuit 901. The Y-shaped sealing ring 503 deforms under the action of negative pressure, and atmospheric air enters the primary raw water circuit 901 through the first flow gap 1101 and the second flow gap 1102. Figure 14 and Figure 15 As shown.

[0068] In this embodiment, the valve body 501 is made of PP material. The first guide post 5011 is equipped with a float 504 made of polystyrene material, and the second guide post 5012 has a hollow structure to reduce the weight of the valve body 501 and further accelerate the upward movement of the valve body 501 to open the communication port 304 as quickly as possible. Furthermore, sealing gaskets 502 are provided on both the first and second sides of the valve body 501 to seal and adapt to the air intake port 101 and the communication port 304.

[0069] In this embodiment, the upper part of the inner shell 20 is provided with several slots 202, such as Figure 6 As shown, the water storage component 30 has several protrusions 305 connected to the slot 202 on its outer side, and the height of the slot 202 is greater than the height of the protrusions 305. A water passage gap is formed between the protrusions 305 and the slot 202, so that the raw water can flow into the water storage cavity 303 through the water passage gap.

[0070] In this embodiment, the housing also includes a connector 60 and an adapter 70. The lower part of the inner shell 20 is provided with the connector 60, and the lower part of the outer shell 10 and the connector 60 is connected to the adapter 70. The space between the outer wall of the connector 60 and the inner wall of the adapter 70 constitutes another primary raw water channel 901. The internal channels of the connector 60 and the internal channels of the adapter 70 are interconnected to form a purified water outlet channel 100. The adapter 70 is provided with an inlet connected to the raw water channel and an outlet connected to the purified water outlet channel 100. Furthermore, the outer wall of the connector 60 is provided with a plurality of first guide channels 801, and the outer wall of the inner shell 20 is provided with a plurality of second guide channels 802 connected to the corresponding slots 202. The first guide channels 801 are connected to the second guide channels 802. The raw water flows evenly to the second guide channels 802 through the first guide channels 801, and flows evenly into the water storage chamber 303 through the second guide channels 802.

[0071] The working principle of the filtration device proposed in this embodiment is as follows:

[0072] Figure 12 and Figure 14 The states of valve assembly 50 in the first and second positions are shown respectively. Figure 14 As shown, when the water level in the storage chamber 303 is lower than D1, the valve assembly 50 descends under gravity, closing the connection port 304 and opening the air intake port 101. At this time, if negative pressure is generated in the water inlet system, the water around the filter element 40 is confined to the secondary raw water path 902 and cannot flow to the primary raw water path 901. Therefore, the water inlet system can only draw in air from the air intake port 101, preventing the dirt and descaling media on the surface of the filter element 40 from being drawn back into the water inlet system. When the water level in the storage chamber 303 is between D1 and D2, the valve assembly 50 rises, gradually opening the connection port 304; if... Figure 12 As shown, when the water level in the water storage chamber 303 is greater than D2, the valve assembly 50 closes the air intake port 101. When the water level continues to rise, the raw water flows into the water storage chamber 303 through the slot 202 and flows to the filter element 40 through the connecting port 304.

[0073] Example 2

[0074] The filter device proposed in this embodiment differs from that in Embodiment 1 in that it does not include a water storage component 30 and a valve assembly 50, and the top of the outer casing 10 does not have a guide plate 102. Other components are the same as in Embodiment 1. Compared with the filter device proposed in Embodiment 1, it is simpler and more convenient in structure.

[0075] like Figure 7 As shown, the water inlet direction of each slot 202 on the upper part of the inner shell 20 points towards the inside of the inner shell 20, and the water inlet direction of each slot 202 is in the same clockwise direction, so that the water flow on the surface of the filter element 40 flows downward in a spiral shape, ensuring the uniform dissolution of the descaling medium.

[0076] Example 3

[0077] A smart toilet water supply component, such as Figure 18 As shown, the device includes an angle valve 130 with two water outlets, with only one water inlet for the angle valve 130. It also includes an anti-siphon filter device as described above. One of the two water outlets is connected to the inlet of the anti-siphon filter device, and the outlet of the anti-siphon filter device is connected to the inlet of the electronic cover 120. The other water outlet is connected to the flushing system of the toilet.

[0078] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A filtration device, characterized in that, include: The shell has an inlet and an outlet that are interconnected. A water storage component is provided on the upper part of the shell. A water storage cavity is provided on the first side of the water storage component. The water storage cavity is connected to the water inlet to form a primary raw water channel. A secondary raw water channel is formed between the second side of the water storage component and the shell. The water storage component is also provided with a connecting port connecting the primary raw water channel and the secondary raw water channel. The filter element is disposed in the secondary raw water circuit, and the secondary raw water circuit is connected to a flow guide channel, and each of the flow guide channels is connected to the outlet to form an outlet water circuit; as well as, A valve assembly is disposed between the housing and the water storage component, and the valve assembly floats up and down with the change of liquid level in the water storage chamber to have a first position and a second position. When water is supplied, the water level in the water storage chamber rises, causing the valve assembly to be in the first position due to buoyancy, thus opening the connection port; when negative pressure is generated in the primary raw water circuit, water in the water storage chamber is drawn in, causing the water level in the water storage chamber to drop, causing the valve assembly to be in the second position, thus closing the connection port.

2. The filtration device as described in claim 1, characterized in that, The housing includes an outer shell and an inner shell disposed within the outer shell, and the gap between the outer shell and the inner shell constitutes part of the primary raw water channel; The water storage component is located on the upper part of the inner shell, such that the first side of the water storage component and the outer shell constitute part of the primary raw water channel. The bottom of the inner shell has a plurality of flow guiding channels arranged in a ring, and at least part of the flow guiding channels have an angle with the axial direction of the inner shell.

3. The filtration device as described in claim 2, characterized in that, The flow channel includes a first flow section and a second flow section connected sequentially along the water outlet direction. One of the first flow section and the second flow section has an angle with the axial direction of the inner shell, and the other is parallel to the axial direction of the inner shell.

4. A filtration device as described in claim 2, characterized in that, The water storage component includes an outer partition and an inner partition connected to the inner side of the outer partition. The space between the outer partition and the inner partition forms the water storage cavity. The through channel enclosed by the inner partition forms the communication port. A portion of the valve assembly is located within the water storage cavity, allowing the valve assembly to float up and down under the buoyancy of the water flow within the water storage cavity.

5. A filtration device as described in claim 4, characterized in that, The water storage height of the water storage chamber is greater than the movement stroke of the valve assembly, and the length of the valve assembly located in the water storage chamber is greater than the movement stroke of the valve assembly.

6. A filtration device as described in claim 5, characterized in that, The valve assembly includes a valve body, a first side of which is used to open and close the communication port, and a first guide post located in the water storage chamber on the first side of the valve body. The length of the first guide post is greater than the travel of the valve body. A guide plate is provided on the top of the outer shell, and the valve body is movably disposed within a guide groove enclosed by the guide plate. The guide groove is used to guide the movement of the first guide post in the vertical direction.

7. A filtration device as described in claim 6, characterized in that, The first guide post is equipped with a float.

8. A filtration device as described in claim 6, characterized in that, The top of the outer casing is provided with an air intake port, and the second side of the valve body is provided with a second guide post that inserts into the air intake port. There is a first flow gap between the second guide post and the air intake port. The outer side of the valve body is provided with a Y-shaped sealing ring that opens along the air intake direction of the air intake port. The valve body is sealed to the side wall of the guide groove through the Y-shaped sealing ring, and there is a second flow gap between the outer side of the first guide post and the side wall of the guide groove. When a negative pressure is generated in the primary raw water circuit, it draws water from the storage chamber, causing the valve body to drop with the liquid level and close the connection port. The opening of the Y-shaped sealing ring shrinks under the negative pressure to connect the first flow gap and the second flow gap.

9. A filtration device as described in claim 2, characterized in that, The upper part of the inner shell is provided with several slots, and the outer side of the water storage component is provided with several protrusions connected to the slots. The height of the slots is greater than the height of the protrusions, so that a water passage gap is formed between the protrusions and the slots, allowing the incoming water to flow through the water passage gap into the water storage cavity.

10. A filtration device as described in claim 9, characterized in that, The housing also includes a connector and an adapter. The connector is located at the lower part of the inner housing. The adapter is connected to the lower part of the outer housing and the connector. The space between the outer wall of the connector and the inner wall of the adapter constitutes part of the primary raw water channel. The internal channels of the connector and the internal channels of the adapter are interconnected to form the water outlet channel. The adapter is provided with an inlet and an outlet.

11. A filtration device as claimed in claim 10, characterized in that, The outer wall of the connector is provided with a plurality of first guide grooves, and the outer wall of the inner shell is provided with a plurality of second guide grooves connected to the corresponding slots, wherein the first guide grooves are connected to the second guide grooves.

12. A filtration device according to any one of claims 1-11, characterized in that, The filter element contains a water-soluble descaling medium, and the descaling medium is a strongly acidic medium.

13. A smart toilet water supply assembly, comprising an angle valve with two water outlets, characterized in that, It also includes a filtration device as described in any one of claims 1-12, wherein one of the two water outlet paths is connected to the water inlet of the filtration device, and the other water outlet path is connected to the toilet flushing system.

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