Double-outlet faucet

Abstract

A first faucet water outlet waterway is communicated with a cold water channel water inlet and a hot water channel water inlet, and a cold and hot water mixing switch valve is arranged between the first faucet water outlet and the cold water channel water inlet and the hot water channel water inlet. The first faucet is used for changing the water supply proportion of the cold water channel water inlet and the hot water channel water inlet to the first faucet water outlet and changing the water outlet flow of the first faucet water outlet; a water path of the second faucet water outlet is communicated with the cold water channel water inlet, the single cold switch valve is arranged between the second faucet water outlet and the cold water channel water inlet and used for opening and closing communication between the cold water channel water inlet and the second faucet water outlet, and a filtering assembly is arranged between the second faucet water outlet and the cold water channel water inlet. The filtering assembly is used for filtering water flow flowing from the cold water channel water inlet to the second faucet water outlet. The invention provides a double-outlet faucet which not only can realize cold and hot mixed water outlet, but also can realize purified water outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of faucets, in particular to a double-outlet faucet. Background Art

[0002] Traditional hot and cold water mixing faucets have a single function and can usually only connect to one cold water pipe and one hot water pipe, and are equipped with a hot and cold water mixing switch valve to adjust the hot and cold water mixing ratio and water flow rate to meet basic water needs such as daily washing and cleaning.

[0003] When users need purified water at the same time, they often need to install a water purification faucet on the wash basin or vegetable bowl equipped with a traditional hot and cold water mixing faucet. The installation is complicated, takes up space and is costly.

[0004] How to design a double-outlet faucet with a simple structure and easy to use, so that it can deliver both hot and cold mixed water and purified water. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual-outlet faucet, and the technical problem to be solved is how to provide a dual-outlet faucet that can realize both hot and cold mixed water outlet and purified water outlet.

[0006] To achieve the above-mentioned object, the present invention provides a solution as follows: a dual-outlet faucet, comprising a faucet body, on which a first faucet outlet, a second faucet outlet, a cold water channel inlet, a hot water channel inlet, a hot and cold water mixing switch valve, and a cold water only switch valve are provided;

[0007] The water path of the first faucet outlet is connected to the cold water channel inlet and the hot water channel inlet. The hot and cold water mixing switch valve is arranged between the first faucet outlet and the cold water channel inlet and the hot water channel inlet, and is used to change the ratio of water supplied from the cold water channel inlet and the hot water channel inlet to the first faucet outlet, and to change the water flow rate of the first faucet outlet;

[0008] The water path of the second faucet water outlet is connected to the cold water channel inlet, and the single cold switch valve is arranged between the second faucet water outlet and the cold water channel inlet, and is used to open and close the conduction between the cold water channel inlet and the second faucet water outlet. A filter component is arranged between the second faucet water outlet and the cold water channel inlet, and the filter component is used to filter the water flowing from the cold water channel inlet to the second faucet water outlet.

[0009] Furthermore, an installation cavity is formed on the faucet body in the water path between the second faucet water outlet and the cold water channel inlet. The filter assembly includes a filter element rack and a multi-stage filter element. The multi-stage filter elements are detachably installed on the filter element rack. The filter assembly can be detachably installed in the installation cavity. After being installed in the installation cavity, the water entering from the cold water channel inlet and flowing to the second faucet water outlet through the installation cavity is filtered step by step through the filter elements of each stage in turn.

[0010] Furthermore, the multi-stage filter element includes a second filter element, a filter chamber is formed in the filter element frame, the filter chamber has a filter chamber water inlet and a filter chamber water outlet, the second filter element is installed in the filter chamber, and the water flow entering the filter chamber from the filter chamber water inlet flows out from the filter chamber water outlet after being filtered by the second filter element, thereby realizing the filtration of the water flow through the second filter element.

[0011] Furthermore, the multi-stage filter element also includes a first filter element. After the first filter element is installed in the filter element frame, it blocks the water inlet end of the filter chamber water inlet, so that the water flow can enter the filter chamber water inlet only after being filtered by the first filter element, thereby realizing that the water flow in the installation cavity is filtered step by step through the first filter element and the second filter element in sequence.

[0012] Furthermore, a seal is provided on the inner wall of the installation cavity and / or the outer wall of the filter element holder. When the filter assembly is installed in the installation cavity, the seal divides the installation cavity located on the outer periphery of the filter assembly into a first chamber located on one side of the seal and a second chamber located on the other side of the seal. The first filter element is located in the first chamber, the first chamber is connected to the water inlet of the cold water channel, the second chamber is connected to the water outlet of the second faucet, and the water outlet of the filter chamber is connected to the second chamber, so that the water in the first chamber is filtered by the first filter element, enters the filter chamber, and is then filtered by the second filter element and discharged to the second chamber.

[0013] Furthermore, a valve seat is installed in the faucet body, and a cold water channel, a hot water channel, a first water outlet and a second water outlet are opened on the valve seat;

[0014] The cold water channel inlet is used to connect to the first water source, the hot water channel inlet is used to connect to the second water source, the valve seat is used to cooperate with the hot and cold mixed water switch valve, the hot and cold mixed water switch valve has a cold water inlet, a hot water inlet and a mixed water outlet, the cold water inlet is connected to the cold water channel outlet, the hot water inlet is connected to the hot water channel outlet, the hot and cold mixed water switch valve is used to adjust the ratio of water supplied by the cold water inlet and the hot water inlet to the mixed water outlet and the water outlet flow rate of the mixed water outlet, the mixed water outlet is connected to the first water outlet inlet, the first water outlet is connected to the first faucet outlet, the second water outlet inlet is connected to the cold water channel in the valve seat, so that the water in the cold water channel can flow to the second water outlet, and the second water outlet is connected to the second faucet outlet.

[0015] Furthermore, an assembly surface is provided on the valve seat, and the cold water outlet, the hot water outlet and the first water inlet are all opened on the assembly surface, and the assembly surface is used for docking and assembly of the hot and cold water mixing switch valve.

[0016] Furthermore, an installation port is provided on the valve seat, which connects the second water outlet between the second water outlet inlet and the second water outlet. The installation port is used for inserting and installing the single cooling switch valve to open and close the conduction between the second water outlet inlet and the second water outlet.

[0017] Furthermore, the cold water channel inlet is used for plugging and installing one end of a cold water pipe, and the other end of the cold water pipe is connected to the first water source. The hot water channel inlet is used for plugging and installing one end of a hot water pipe, and the other end of the hot water pipe is connected to the second water source.

[0018] Furthermore, a curved pipe is provided on the faucet body, the end of the curved pipe is fixed to a pull-out head, and the pull-out head can be pulled out of the curved pipe. The first faucet water outlet is located on the pull-out head. The first water outlet is connected to the first faucet water outlet on the pull-out head through a water outlet hose. The water outlet hose is inserted into the curved pipe and extends downward from the curved pipe. A makeshift channel for the water outlet hose to pass downward is formed on the valve seat.

[0019] After adopting the above scheme, the beneficial effects of the present invention are: the water path of the first faucet water outlet is connected to the cold water channel inlet and the hot water channel inlet, and the hot and cold mixed water switch valve is arranged between the first faucet water outlet and the cold water channel inlet and the hot water channel inlet, for changing the ratio of water supplied by the cold water channel inlet and the hot water channel inlet to the first faucet water outlet, and changing the water outlet flow of the first faucet water outlet, to realize the hot and cold water mixed water outlet function, the second faucet water outlet water path is connected to the cold water channel inlet, and the single cold switch valve is arranged between the second faucet water outlet and the cold water channel inlet, for opening and closing the conduction between the cold water channel inlet and the second faucet water outlet, a filter assembly is arranged between the second faucet water outlet and the cold water channel inlet, the filter assembly is used to filter the water flow from the cold water channel inlet to the second faucet water outlet, to realize the water purification function, the hot and cold water mixed water outlet and the purified water outlet are independently switched and do not affect each other, the structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial cross-sectional view of the installation cavity of the present invention;

[0021] Figure 2 This is an exploded view of the filter assembly of the present invention with the mounting cavity removed;

[0022] Figure 3 A partial cross-sectional view of the filter assembly of the present invention with the installation cavity removed and the installation cavity cut away;

[0023] Figure 4 is a three-dimensional structural diagram of the filter assembly of the present invention;

[0024] Figure 5 is a cross-sectional view of the filter assembly of the present invention;

[0025] Figure 6 is an exploded view of the filter assembly of the present invention;

[0026] Figure 7 is an exploded cross-sectional view of the filter assembly of the present invention;

[0027] Figure 8 It is a three-dimensional structural diagram of the valve seat;

[0028] Figure 9 This is the cross-sectional structural diagram of the valve seat;

[0029] Figure 10 It is a cross-sectional structural diagram of the valve seat in the other direction;

[0030] Figure 11 This is a three-dimensional structural diagram of the hot and cold water mixing on-off valve and the cooling-only on-off valve installed on the valve seat;

[0031] Figure 12 This is a three-dimensional diagram of a hot and cold water mixing switch valve;

[0032] Figure 13 This is a side view of a hot and cold water mixing on-off valve and a cooling-only on-off valve installed on the valve seat;

[0033] Figure 14 This is a side view of the hot and cold water mixing on-off valve and the cooling-only on-off valve installed on the valve seat from the other direction;

[0034] Figure 15 This is a cross-sectional view of the valve seat installed in the faucet body;

[0035] Figure 16 This is a connection diagram for cold water pipes and hot water pipes.

[0036] Explanation of the numbers: 1-faucet body, 2-first faucet outlet, 3-second faucet outlet, 4-cold water channel inlet, 5-hot water channel inlet, 6-hot and cold water mixing switch valve, 7-single cold switch valve, 8-filter assembly, 9-installation cavity, 10-filter element holder, 11-second filter element, 12-filter cavity, 13-filter cavity inlet, 14-filter cavity outlet, 15-first filter element, 16-seal, 17-first chamber, 18-second chamber, 19-valve seat, 20-cold water channel, 21-hot water channel, 22-first water outlet, 23-second water outlet, 24-cold water inlet, 25-hot water channel Water inlet, 26-mixed water outlet, 27-cold water channel outlet, 28-first water outlet inlet, 29-first water outlet outlet, 30-second water outlet inlet, 31-second water outlet outlet, 32-assembly surface, 33-hot water channel outlet, 34-installation port, 35-cold water pipe, 36-hot water pipe, 37-elbow, 38-pull head, 39-water outlet hose, 40-make way channel, 41-water purification switch handle, 42-mixing valve handle, 43-hollow support part, 44-plug-in part, 45-filter element installation port, 46-end cover, 47-first half, 48-second half. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words, such as the use of terms such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0039] A double-outlet faucet, such as Figure 1-16 As shown, it includes a faucet body 1, on which are provided a first faucet outlet 2, a second faucet outlet 3, a cold water channel inlet 4, a hot water channel inlet 5, a hot and cold water mixing switch valve 6, and a single cold switch valve 7; the cold water channel inlet 4 is used for plugging and installing one end of a cold water pipe 35, the other end of which is connected to a first water source, which can be a cold water pipe of a household water network; the hot water channel inlet 5 is used for plugging and installing one end of a hot water pipe 36, the other end of which is connected to a second water source, which can be a hot water pipe of a household water network;

[0040] The first faucet water outlet 2 is connected to the cold water inlet 4 and the hot water inlet 5. The hot and cold water mixing switch valve 6 is arranged between the first faucet water outlet 2 and the cold water inlet 4 and the hot water inlet 5. It is used to change the ratio of the cold water inlet 4 and the hot water inlet 5 to the first faucet water outlet 2 and change the water flow rate of the first faucet water outlet 2. Specifically, the hot and cold water mixing switch valve 6 is provided with a mixing valve handle 42. By moving in the first direction ( Figure 14 The mixing valve handle 42 is swung in the direction of the arrow of the mixing valve handle 42 to adjust the ratio of hot and cold water. Figure 13 The mixing valve handle 42 is swung in the direction of the arrow on the mixing valve handle 42 to adjust the flow rate of hot and cold water (including shutting off the water when the flow rate is zero). Since the internal structure of the hot and cold water mixing switch valve 6 to achieve the above function is a conventional technical means in this field, it will not be elaborated in this embodiment.

[0041] The second faucet outlet 3 is connected to the cold water channel inlet 4, and the single cold switch valve 7 is arranged between the second faucet outlet 3 and the cold water channel inlet 4, for opening and closing the conduction between the cold water channel inlet 4 and the second faucet outlet 3. The single cold switch valve 7 can be any existing water flow switch valve, which can be electronically controlled or manually controlled. Specifically, a manual switch valve is selected in this embodiment, which is provided with a water purification switch handle 41. By twisting the water purification switch handle 41 ( Figure 13 The water flow rate of the second faucet water outlet 3 is adjusted by turning on the handle 41 of the water purification switch in the direction of the arrow) (including shutting off the water when the flow rate is zero). The specific structure of the single cold switch valve 7 for realizing this function is also a conventional technical means in this field, so it will not be described in detail. A filter component 8 is provided between the second faucet water outlet 3 and the cold water channel water inlet 4. The filter component 8 is used to filter the water flowing from the cold water channel water inlet 4 to the second faucet water outlet 3. It can be understood that the water flowing from the cold water channel water inlet 4 to the first faucet water outlet 2 does not pass through the filter component 8.

[0042] Then, by operating the mixing valve handle 42, the water flow rate and water temperature of the first faucet outlet 2 can be controlled to realize the hot and cold mixed water outlet function, and the water flow rate of the second faucet outlet 3 can be controlled by operating the water purification switch handle 41. Before the water flows out of the second faucet outlet 3, the water is filtered by the filter component 8 to realize the water purification function. The hot and cold mixed water outlet and the purified water outlet do not affect each other, are independently controlled, and are easy to use. When installing and connecting the water line, just like the traditional hot and cold mixing faucet, you only need to connect the hot water pipe of the household water network to the hot water channel inlet 5, and connect the cold water pipe of the household water network to the cold water channel inlet 4, which is easy to install.

[0043] Since the filter assembly 8 has a service life and requires regular maintenance, in order to facilitate the maintenance of the filter assembly 8 and ensure the water purification effect, the faucet body 1 is formed with an installation cavity 9 on the water path between the second faucet water outlet 3 and the cold water channel inlet 4. The filter assembly 8 includes a filter element holder 10 and a multi-stage filter element. The multi-stage filter element is detachably installed on the filter element holder 10. The filter assembly 8 can be detachably installed in the installation cavity 9. After being installed in the installation cavity 9, the water entering from the cold water channel inlet 4 and flowing to the second faucet water outlet 3 through the installation cavity 9 is filtered step by step through the filter elements of each stage in turn. The specific matching structure of the installation cavity 9 and the filter assembly 8, as well as the specific structure of the filter elements of each stage being installed on the filter element holder 10 of the filter assembly 8, are not specifically limited. Those skilled in the art can implement it according to actual needs and in combination with the conventional technical means of water path design in this field. As long as the above functions can be achieved, the preferred structure is given below.

[0044] Specifically in this embodiment, there are two stages of filter elements, that is, the multi-stage filter element includes a first filter element 15 and a second filter element 11. For the filtering effect, the first filter element 15 is preferably a carbon fiber filter element, and the second filter element 11 is preferably an adsorptive filter material. Of course, other filter element designs can also be added on the basis of this two-stage filter element design without limitation. The second filter element 11 is preferably installed using the following structure: a filter chamber 12 is formed in the filter element frame 10, and the filter element frame 10 is roughly cylindrical as a whole. The filter chamber 12 is formed on one axial side of its cylindrical shape, and a hollow support portion 43 is formed on the other side (described in detail later). The filter chamber 12 has a filter chamber water inlet 13 and a filter chamber water outlet 14. The filter chamber water inlet 13 is specifically arranged at one axial end of the filter chamber 12, facing the side of the hollow support portion 43, and the filter chamber water outlet 14 is arranged on the outer peripheral wall. The second filter element 11 is installed in the filter chamber 12, and the water flow entering the filter chamber 12 from the filter chamber water inlet 13 flows out from the filter chamber water outlet 14 after being filtered by the second filter element 11, thereby realizing that the water flow is filtered by the second filter element 11. After the first filter element 15 is installed in the filter element holder 10, the water inlet end of the filter chamber water inlet 13 is blocked, so that the water flow can enter the filter chamber water inlet 13 only after being filtered by the first filter element 15, so that the water flow in the installation cavity 9 is filtered step by step through the first filter element 15 and the second filter element 11 in sequence. More specifically, a plug-in portion 44 is formed on the surface of the filter element holder 10, and the plug-in portion 44 is located in the hollow support portion 43. The water inlet end of the filter chamber water inlet 13 is located on the plug-in portion 44. The first filter element 15 can be detachably installed on the filter element holder 10 by plugging with the plug-in portion 44. More specifically, in this embodiment, the plug-in portion 44 is a cylindrical structure protruding from the filter element holder 10. The first filter element 15 is cylindrical and is sleeved on the cylindrical plug-in portion 44. The cylindrical middle channel is closed and cannot pass water, and the cylindrical side wall allows water to flow through for filtration.

[0045] In order to stably support the first filter element 15 and prevent it from falling off, in a preferred embodiment, the outer surface of the filter element holder 10 is formed with a hollow support 43 for fitting and supporting the outer periphery of the first filter element 15. The hollow support portion 43 only makes way for the first filter element 15 in the plugging and unplugging direction of the first filter element 15 and the plug-in portion 44, supporting various parts of the cylindrical outer wall of the first filter element 15. Moreover, due to its hollow shape, it can allow water to pass through and reach the outer surface of the first filter element 15.

[0046] In order to facilitate the installation of the filter assembly 8 into the installation cavity 9, in a preferred embodiment, the installation cavity 9 forms a filter element installation port 45 on the surface of the faucet body 1, and the filter assembly 8 is inserted into or pulled out of the installation cavity 9 from the filter element installation port 45. An end cap 46 is formed at the end of the filter assembly 8. After the filter assembly 8 is inserted into the installation cavity 45, the end cap 46 blocks the filter element installation port 45. More specifically, the outer wall of the filter element assembly 8 forms an external thread, and the inner wall of the installation cavity 9 forms an internal thread. The filter element assembly 8 is fixed in the installation cavity 9 by screwing the internal and external threads. A sealing member 16 is provided on the inner wall of the installation cavity 9 and / or the outer wall of the filter element holder 10. In this embodiment, the sealing member 16 is specifically arranged around the outer wall of the filter element holder 10 When the filter assembly 8 is installed in the installation cavity 9, the seal 16 divides the installation cavity 9 located on the outer periphery of the filter assembly 8 into a first chamber 17 located on one side of the seal 16, and a second chamber 18 located on the other side of the seal 16. The first filter element 15 is located in the first chamber 17, and the second water outlet 31 on the valve seat is located in the first chamber 17. The second chamber 18 is connected to the second faucet outlet 3, and the filter cavity outlet 14 is connected to the second chamber 18, so that the water flow in the first chamber 17 is filtered by the first filter element 15, enters the filter cavity 12, and is then filtered by the second filter element and discharged to the second chamber 18, and then discharged from the second chamber 18 to the second faucet outlet 3.

[0047] In order to facilitate the replacement of the second filter element 11, in a preferred embodiment, the filter chamber 12 can be opened or closed, and after opening, the second filter element 11 can be installed or removed. Specifically, the filter element holder 10 includes a first half 47 and a second half 48 that can be detachably assembled. The filter chamber 12 is formed between the first half 47 and the second half 48, and is assembled by the first half 47 and the second half 48. When the first half 47 and the second half 48 are disassembled, the filter chamber 12 is opened. After the first half 47 and the second half 48 are assembled, they can be fixed by snapping.

[0048] In a preferred embodiment, in order to facilitate production and the installation of the hot and cold mixed water switch valve 6 and the single cold switch valve 7, a valve seat 19 is installed in the faucet body 1, and a cold water channel 20, a hot water channel 21, a first water outlet 22 and a second water outlet 23 are provided on the valve seat 19; the valve seat 19 is used to cooperate with the hot and cold mixed water switch valve 6, and an assembly surface 32 is provided on the valve seat 19, and the cold water channel outlet 27, the hot water channel outlet 33 and the first water outlet inlet 28 are all provided on the assembly surface 32, and the assembly surface 32 is for docking and assembling the hot and cold mixed water switch valve 6, and the hot mixed water switch valve 6 has a cold water inlet 24, a hot water inlet 25 and a mixed water outlet 26. The positions of the cold water inlet 24, the hot water inlet 25 and the mixed water outlet 26 are arranged so that after docking and assembly, the cold water inlet 24 is connected to the cold water channel outlet 27, and the hot water inlet 25 is connected to the hot water The hot and cold water mixing switch valve 6 is used to adjust the ratio of water supplied by the cold water inlet 24 and the hot water inlet 25 to the mixed water outlet 26 and the water outlet flow rate of the mixed water outlet 26. The mixed water outlet 26 is connected to the first water outlet inlet 28, the first water outlet 29 is connected to the first faucet water outlet 2, and the second water outlet inlet 30 is connected to the cold water channel 20 in the valve seat 19 so that the water in the cold water channel 20 can flow to the second water outlet 23, and the second water outlet 31 is connected to the first chamber 17. The valve seat 19 is provided with an installation port 34. The installation port 34 passes through the second water outlet 23 between the second water outlet inlet 30 and the second water outlet 31. The installation port 34 is used for the insertion and installation of the single cold switch valve 7 to open and close the conduction between the second water outlet inlet 30 and the second water outlet 31.

[0049] The faucet body 1 described in this embodiment is a pull-out faucet, and a bend 37 is provided on the faucet body 1. The end of the bend 37 is fixed to a pull-out head 38, and the pull-out head 38 can be pulled out of the bend 37. The first faucet water outlet 2 is located on the pull-out head 38, and the first water outlet 29 is connected to the first faucet water outlet 2 on the pull-out head 38 through a water outlet hose 39. The water outlet hose 39 penetrates into the bend 37 and extends downward from the bend. A makeshift channel 40 for the water outlet hose 39 to pass downward is formed on the valve seat 19. After the water outlet hose 39 passes downward through the makeshift channel 40, a heavy hammer is installed on the lower part. The heavy hammer pulls down the water outlet hose 39, so that after the pull-out head 38 is pulled out of the bend 37, it can be pulled back to its original position by the water outlet hose 39 under the action of the gravity of the heavy hammer.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A double-outlet faucet, characterized by: The faucet body (1) is provided with a first faucet water outlet (2), a second faucet water outlet (3), a cold water channel water inlet (4), a hot water channel water inlet (5), a hot and cold water mixing switch valve (6), and a cold water only switch valve (7); The first faucet water outlet (2) is connected to the cold water channel water inlet (4) and the hot water channel water inlet (5) through a water channel, and a hot and cold water mixing switch valve (6) is arranged between the first faucet water outlet (2) and the cold water channel water inlet (4) and the hot water channel water inlet (5) to change the ratio of water supplied from the cold water channel water inlet (4) and the hot water channel water inlet (5) to the first faucet water outlet (2), and to change the water flow rate of the first faucet water outlet (2); The second faucet water outlet (3) is connected to the cold water channel water inlet (4) through a water channel. A single cold switch valve (7) is provided between the second faucet water outlet (3) and the cold water channel water inlet (4) and is used to open and close the conduction between the cold water channel water inlet (4) and the second faucet water outlet (3). A filter assembly (8) is provided between the second faucet water outlet (3) and the cold water channel water inlet (4). The filter assembly (8) is used to filter the water flowing from the cold water channel water inlet (4) to the second faucet water outlet (3).

2. A double-outlet faucet according to claim 1, characterized in that: The faucet body (1) is provided with an installation cavity (9) on the water path between the second faucet water outlet (3) and the cold water channel water inlet (4); the filter assembly (8) comprises a filter element frame (10) and a multi-stage filter element; the multi-stage filter element is detachably mounted on the filter element frame (10); the filter assembly (8) can be detachably installed in the installation cavity (9); and after being installed in the installation cavity (9), water entering from the cold water channel water inlet (4) and flowing to the second faucet water outlet (3) through the installation cavity (9) is filtered step by step through the filter elements of each stage in sequence.

3. A double-outlet faucet according to claim 2, characterized in that: The multi-stage filter element comprises a second filter element (11), a filter chamber (12) is formed in a filter element frame (10), the filter chamber (12) has a filter chamber water inlet (13) and a filter chamber water outlet (14), the second filter element (11) is installed in the filter chamber (12), and water flows into the filter chamber (12) from the filter chamber water inlet (13) and flows out from the filter chamber water outlet (14) after being filtered by the second filter element (11), thereby achieving filtration of the water flow through the second filter element (11).

4. A double-outlet faucet according to claim 3, characterized in that: The multi-stage filter element further comprises a first filter element (15). After the first filter element (15) is installed on the filter element frame (10), the water inlet end of the filter chamber water inlet (13) is blocked, so that the water flow can enter the filter chamber water inlet (13) only after being filtered by the first filter element (15), thereby achieving step-by-step filtration of the water flow in the installation cavity (9) through the first filter element (15) and the second filter element (11).

5. A double-outlet faucet according to claim 4, characterized in that: A sealing member (16) is provided on the inner wall of the installation cavity (9) and / or the outer wall of the filter element holder (10). When the filter assembly (8) is installed in the installation cavity (9), the sealing member (16) separates the installation cavity (9) located on the periphery of the filter assembly (8) into a first chamber (17) located on one side of the sealing member (16) and a second chamber (18) located on the other side of the sealing member (16). The first filter element (15) is located in the first chamber (17). The first chamber (17) is connected to the cold water channel water inlet (4). The second chamber (18) is connected to the second faucet water outlet (3). The filter cavity outlet (14) is connected to the second chamber (18), so that the water in the first chamber (17) is filtered by the first filter element (15), enters the filter cavity (12), and is then filtered by the second filter element and discharged to the second chamber (18).

6. The double-outlet faucet according to claim 1, characterized in that: A valve seat (19) is installed in the faucet body (1), and a cold water channel (20), a hot water channel (21), a first water outlet (22) and a second water outlet (23) are provided on the valve seat (19); The cold water channel inlet (4) is used to connect to the first water source, the hot water channel inlet (5) is used to connect to the second water source, the valve seat (19) is used to cooperate with the hot and cold water mixing switch valve (6), the hot and cold water mixing switch valve (6) has a cold water inlet (24), a hot water inlet (25) and a mixed water outlet (26), the cold water inlet (24) is connected to the cold water channel outlet (27), the hot water inlet (25) is connected to the hot water channel outlet (33), and the hot and cold water mixing switch valve (6) is used to adjust the cold water inlet (24) and the hot water inlet. (25) The proportion of water supplied to the mixed water outlet (26) and the water flow rate of the mixed water outlet (26), the mixed water outlet (26) is connected to the first water outlet inlet (28), the first water outlet outlet (29) is connected to the first faucet outlet (2), the second water outlet inlet (30) is connected to the cold water channel (20) in the valve seat (19), so that the water in the cold water channel (20) can flow to the second water outlet (23), and the second water outlet outlet (31) is connected to the second faucet outlet (3).

7. A double-outlet faucet according to claim 6, characterized in that: The valve seat (19) is provided with an assembly surface (32), and the cold water channel outlet (27), the hot water channel outlet (33) and the first outlet channel inlet (28) are all opened on the assembly surface (32). The assembly surface (32) is used for docking and assembly of the hot and cold water mixing switch valve (6).

8. The double-outlet faucet according to claim 6, characterized in that: The valve seat (19) is provided with an installation opening (34), which penetrates the second water outlet (23) between the second water outlet inlet (30) and the second water outlet outlet (31). The installation opening (34) is used for inserting and installing the single cooling switch valve (7) to open and close the conduction between the second water outlet inlet (30) and the second water outlet outlet (31).

9. The double-outlet faucet according to claim 6, characterized in that: The cold water channel inlet (4) is used for plugging and installing one end of a cold water pipe (35), and the other end of the cold water pipe (35) is connected to a first water source. The hot water channel inlet (5) is used for plugging and installing one end of a hot water pipe (36), and the other end of the hot water pipe (36) is connected to a second water source.

10. The double-outlet faucet according to claim 6, characterized in that: The faucet body (1) is provided with a curved pipe (37), the end of the curved pipe (37) is fixed with a pull-out head (38), and the pull-out head (38) can be pulled out of the curved pipe (37). The first faucet water outlet (2) is located on the pull-out head (38), and the first water outlet (29) is connected to the first faucet water outlet (2) on the pull-out head (38) through a water outlet hose (39). The water outlet hose (39) is inserted into the curved pipe (37) and extends downward from the curved pipe. A clearance channel (40) for the water outlet hose (39) to pass downward is formed on the valve seat (19).

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