Valve seat, concealed faucet and shower device

Abstract

A valve seat, a concealed faucet and a shower device, the valve seat comprises a first structural body and a second structural body, the first structural body comprises a main body structure formed by injection molding of a plastic material, and the main body structure comprises a first mounting seat for mounting a first valve core and a second mounting seat for mounting a second valve core; the connecting beam is connected between the first mounting seat and the second mounting seat, a main water channel is formed in the connecting beam, and the main water channel is provided with a water channel inlet and a water channel outlet; the second structural body is formed on the first structural body through injection molding by adopting a plastic material, and the second structural body is provided with a water inlet runner and a water outlet runner; inlet water of the water inlet can enter the first valve element installed on the first installation base through the water inlet flow channel, outlet water of the first valve element can enter the water channel inlet and enter the second valve element installed on the second installation base from the water channel outlet, and outlet water of the second valve element flows out of the water outlet through the water outlet flow channel.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom products, and more specifically, to a valve seat, a concealed faucet and a shower device. Background Art

[0002] At present, the valve seats in concealed faucets are mostly made of metal, or a combination of metal and plastic. Metal valve seats are usually made by machining, which is not only costly and complicated in processing, but also easy for metal to precipitate metal elements in water, affecting health. Utility Model Content

[0003] The utility model provides a valve seat, comprising:

[0004] The first structure comprises a main structure formed by injection molding of a plastic material, the main structure comprising a first mounting seat for mounting a first valve core and a second mounting seat for mounting a second valve core, and further comprising a connecting beam connected between the first mounting seat and the second mounting seat, wherein a main water channel is formed in the connecting beam, and the main water channel has a water channel inlet close to the first mounting seat and a water channel outlet close to the second mounting seat;

[0005] A second structure is injection-molded on the first structure using a plastic material, and the second structure is provided with at least one water inlet channel having a water inlet and at least one water outlet channel having a water outlet;

[0006] Among them, the water entering the water inlet can enter the first valve core installed on the first mounting seat through the water inlet channel, the water exiting the first valve core can enter the water channel inlet, and enter the second valve core installed on the second mounting seat from the water channel outlet, and the water exiting the second valve core flows out of the water outlet through the water outlet channel.

[0007] The embodiment of the present application also provides a concealed faucet, comprising the valve seat as described above, and further comprising a first valve core mounted on a first mounting seat of the valve seat and a second valve core mounted on a second mounting seat;

[0008] Among them, the first valve core is a temperature control valve core, the second valve core is a water diversion valve core, and the valve seat is provided with at least two water inlet channels respectively connected to the water inlet of the temperature control valve core, and at least two water outlet channels respectively connected to the water outlet of the water diversion valve core.

[0009] An embodiment of the present application further provides a shower device, comprising the concealed faucet as described above.

[0010] In the technical solution provided in the embodiment of the present application, the valve seat is made of plastic material through two injection molding to realize the plasticization of the product. Not only is the processing method simple and the cost is reduced, but the plastic valve seat will not precipitate heavy metals and is healthier.

[0011] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0013] Figure 1 A schematic diagram of the structure of a valve seat according to an embodiment of the present application;

[0014] Figure 2 is a schematic structural diagram of a second structural member according to an embodiment of the present application;

[0015] Figure 3 for Figure 2 A schematic structural diagram of the second structural member shown as viewed from the bottom side;

[0016] Figure 4 for Figure 2 The structural schematic diagram of the second structural member shown is cut along the center of the water outlet pipe body;

[0017] Figure 5 is a schematic structural diagram of a first structural body according to an embodiment of the present application;

[0018] Figure 6 for Figure 5 The schematic structural diagram of the first structure shown is viewed from the other side;

[0019] Figure 7 for Figure 5 A schematic cross-sectional view of the first structure shown;

[0020] Figure 8 To have Figure 5 A schematic cross-sectional view of a valve seat of the first structure shown;

[0021] Fig. 9 is a schematic structural diagram of a first structural body according to an embodiment of the present application;

[0022] Fig.10 for Fig. 9A schematic cross-sectional view of the first structure shown;

[0023] Fig.11 To have Fig. 9 A schematic cross-sectional view of a valve seat of the first structure shown;

[0024] Fig.12 is a schematic structural diagram of a first structure according to an embodiment of the present application (wherein the side sealing plate is in a state where the core pulling port is not blocked);

[0025] Fig.13 for Fig.12 The schematic cross-sectional structure diagram of the first structure shown (wherein the side sealing plate is in a state of sealing the core pulling port);

[0026] Fig.14 To have Fig.13 A schematic cross-sectional view of a valve seat of the first structure shown;

[0027] Fig.15 is a schematic structural diagram of a first structure according to an embodiment of the present application (wherein the bottom sealing plate is in a state where the core pulling port is not blocked);

[0028] Fig.16 for Fig.15 The schematic diagram of the cutaway structure of the first structure shown (wherein the bottom sealing plate is in a state of sealing the core pulling port);

[0029] Fig.17 To have Fig.16 A schematic cross-sectional view of a valve seat of the first structure shown;

[0030] Fig.18 is a structural schematic diagram of a first structure according to an embodiment of the present application (the first structure is in a separated state);

[0031] Fig.19 for Fig.18 The structure shown is a schematic diagram of the structure viewed from the other side;

[0032] Fig. 20 To have Fig.18 A schematic cross-sectional structural diagram of the valve seat of the first structure is shown.

[0033] 1-first structure; 11-first mounting seat; 111-threaded connection portion; 112-annular base; 1121-groove; 1122-support portion; 113-convex rib; 12-second mounting seat; 13-connecting beam; 13A-first connecting beam; 13B-second connecting beam; 131-main waterway; 132-waterway inlet; 133-waterway outlet; 134-core pulling port; 135-first port; 136-second port; 137-buckle; 138-slot; 14-side sealing plate; 15-bottom sealing plate; 16-sealing ring; 2-second structural body; 21-first shell; 22-second shell; 23-first filling body; 231-first water inlet hole; 232-first water outlet hole; 233-first positioning hole; 24-second filling body; 241-second water outlet hole; 242-second water inlet hole; 243-second positioning hole; 25-water inlet pipe body; 251-water inlet; 26-water outlet pipe body; 261-water outlet; 27-intermediate body. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0035] The embodiment of the present application provides a valve seat, such as Figure 1-Figure 20 As shown, it includes a first structure body 1 and a second structure body 1.

[0036] The first structure 1 includes a main structure made of injection molding of a plastic material, the main structure includes a first mounting seat 11 for mounting a first valve core and a second mounting seat 12 for mounting a second valve core, and also includes a connecting beam 13 connected between the first mounting seat 11 and the second mounting seat 12, wherein a main water channel 131 is formed in the connecting beam 13, and the main water channel 131 has a water channel inlet 132 close to the first mounting seat 11 and a water channel outlet 133 close to the second mounting seat 12;

[0037] The second structure 2 is injection molded on the first structure 1 using a plastic material, and the second structure 2 is provided with at least one water inlet channel having a water inlet 251 and at least one water outlet channel having a water outlet 261;

[0038] Among them, the water entering the water inlet 251 can enter the first valve core installed on the first mounting seat 11 through the water inlet channel, the water exiting the first valve core can enter the water channel inlet 132, and enter the second valve core from the water channel outlet 133, and the water exiting the second valve core flows out of the water outlet 261 through the water outlet channel.

[0039] Optionally, the main structure of the first structure body 1 may be made of a plastic material with a higher hardness than that of the second structure body 2 , so that the first mounting seat 11 and the second mounting seat 12 have sufficient hardness to mount the first valve core and the second valve core.

[0040] In the technical solution provided in the embodiment of the present application, the valve seat is made of plastic material through two injection molding to realize the plasticization of the product. Not only is the processing method simple and the cost is reduced, but also when used in a water outlet device (such as a concealed faucet), the plastic valve seat will not precipitate heavy metals, which is healthier.

[0041] In one embodiment, reference Figure 5 The first mounting seat 11 and the second mounting seat 12 are respectively annular structures, and the annular structure may include a threaded connection portion 111 with an external thread to connect the first valve core and the second valve core through threads. Of course, it does not exclude that the first mounting seat 11 and the second mounting seat 12 install the first valve core and the second valve core through other methods, such as bolt connection.

[0042] like Figure 1 and Figure 2 As shown, the second structure 2 includes a first filling body 23 at least partially located in the first mounting seat 11 and a second filling body 24 at least partially located in the second mounting seat 12; wherein, the first filling body 23 is provided with a first water inlet hole 231 communicating with the water inlet channel and a first water outlet hole 232 communicating with the water channel inlet 132, the first water inlet hole 231 is used to communicate with the water inlet of the first valve core, and the first water outlet hole 232 is used to communicate with the water outlet of the first valve core; the second filling body 24 is provided with a second water inlet hole 242 communicating with the water channel outlet 133 and a second water outlet hole 241 communicating with the water outlet channel, the second water inlet hole 242 is used to communicate with the water inlet of the second valve core, and the second water outlet hole 241 is used to communicate with the water outlet of the second valve core. In addition, the first filling body 23 is also provided with a first positioning hole 233, and the second filling body 24 is provided with a second positioning hole 243.

[0043] In order to ensure that the first filling body 23 and the first mounting seat 11 are firmly injection-molded together, and the second filling body 24 and the second mounting seat 12 are firmly injection-molded together, as shown in FIG. Figure 5 As shown, the inner surface of the first mounting seat 11 and the inner surface of the second mounting seat 12 may be provided with a plurality of axially extending ribs 113, and the ribs 113 may be arranged in a plurality along the circumferential direction. Figure 2 The first filling body 23 and the second filling body 24 are shown to have recesses formed on their outer circumferential surfaces to match the ribs 113. In addition, in order to fit the first filling body 23 and the second filling body 24 with the corresponding first valve core and the second valve core, as shown in FIG. Figure 1 and Figure 4As shown, the first filling body 23 includes a protruding portion protruding upward from the first mounting seat 11, so that when the shell of the first valve core is fastened to the first mounting seat 11 by threads or other means, the surface of the first valve core with the water inlet and the water outlet can fit tightly on the first filling body 23. Similarly, the second filling body 24 includes a protruding portion protruding upward from the second mounting seat 12.

[0044] In one embodiment, the first valve core is a temperature control valve core having two water inlets and one water outlet, and the second valve core is a water diversion valve core having one water inlet and two water outlets.

[0045] like Figure 1 and Figure 2 As shown, the second structure 2 is provided with two water inlet channels with water inlets 251 and two water outlet channels with water outlets 261, the first filling body 23 is provided with two first water inlet holes 231, which are connected to the two water inlet channels one by one, and the second filling body 24 is provided with two second water outlet holes 241, which are connected to the two water outlet channels one by one. When the first valve core is installed on the first mounting seat 11, the surface of the first valve core with the water inlet and the water outlet is attached to the first filling body 23, so that the two water inlets of the first valve core are connected to the two first water inlet holes 231 one by one, and the water outlet is connected to the first water outlet hole 232; when the second valve core is installed on the second mounting seat 12, the surface of the second valve core with the water inlet and the water outlet is attached to the second filling body 24, so that the water inlet of the second valve core is connected to the second water inlet hole 242, and the two water outlets are connected to the two second water outlet holes 241 one by one. In this way, water entering the water inlet channel from the two water inlets 251 (one of the two water inlets 251 enters cold water, and the other enters hot water) enters the first valve core from the corresponding first water inlet hole 231 respectively. After the cold and hot water are mixed in the first valve core, they enter the water channel inlet 132 through the first water outlet hole 232, and then flow out from the water channel outlet 133 to the second water inlet hole 242, and enter the water inlet of the second valve core. The second valve core controls the water to flow out from one of the two second water outlet holes 241 to the corresponding water outlet channel, and then flow out from the corresponding water outlet 261.

[0046] The second structure 2 also includes a first shell 21 that is injection molded together with the outer side of the lower end of the first mounting seat 11 and a second shell 22 that is injection molded together with the outer side of the lower end of the second mounting seat 12, and also includes a water inlet pipe body 25 connected to the first shell 21 and having the water inlet flow channel, and a water outlet pipe body 26 connected to the second shell 22 and having the water outlet flow channel; wherein the water inlet pipe body 25 extends from the outer side of the first shell 21 to the inner side and is connected to the first filling body 23, so that the water inlet flow channel is connected to the first water inlet hole 231, Figure 4The structure of the water inlet channel connected to the first water inlet hole 231 is shown, and the water outlet pipe body 26 extends from the outside of the second shell 22 to the inside and is connected to the second filling body 24, so that the water outlet channel is connected to the second water outlet hole 241. The state of the water outlet channel connecting to the second water outlet hole 241 is the same as Figure 4 The structure of the middle water inlet channel communicating with the first water inlet hole 231 is similar.

[0047] In one example, if Figure 2 and Figure 3 As shown, the first shell 21 and the second shell 22 are roughly cylindrical structures, the upper end of the first shell 21 is injection molded together with the outer side of the lower end of the first mounting seat 11, and the upper end of the second shell 22 is injection molded together with the outer side of the lower end of the second mounting seat 12. Two water inlet pipes 25 are arranged on the first shell 21 at 180 degrees, and two water outlet pipes 26 are arranged on the second shell 22 at 90 degrees.

[0048] like Figure 4 and Figure 5 As shown, the first mounting seat 11 includes an annular base 112 located at the lower end and an annular threaded connection portion 111 located on the annular base 112, and the threaded connection portion 111 has an external thread to be connected and fixed to the shell of the first valve core through a thread. The annular base 112 is injection molded together with the second structure 2. In order to make the connection between the annular base 112 and the second structure 2 more secure, the annular base 112 includes two axially spaced annular plates, and a plurality of circumferentially arranged grooves 1121 are formed between the two annular plates, wherein a support portion 1122 supported between the two annular plates is provided between adjacent grooves. When the second structure 2 is injection molded, refer to Figure 4 , the injection molding material can enter the groove 1121 and thus be firmly fixed to the annular base 112. The structure of the second mounting seat 12 is the same as that of the first mounting seat 11, and will not be described in detail here.

[0049] In one embodiment, the second structure 2 further includes an intermediate body 27 connected between the first shell 21 and the second shell 22 and covering the connecting beam 13 .

[0050] exist Figure 5-Figure 20 In the example shown, the connecting beam 13 is arranged at the lower ends of the first mounting seat 11 and the second mounting seat 12, the first shell 21 covers the outer side of the lower end of the first mounting seat 11, and the second shell 22 covers the outer side of the lower end of the second mounting seat 12, and the intermediate body 27 connected between the first shell 21 and the second shell 22 covers the connecting beam 13, so that the second structure 2 and the first structure 1 are injection molded as a whole.

[0051] It should be understood that the first mounting seat 11 and the second mounting seat 12 of the first structure 1 are not limited to the above-mentioned annular structure. For example, the first filling body 23 can be used as a part of the first mounting seat 11 and the second filling body 24 can be used as a part of the second mounting seat 12 for injection molding to form the first structure 1. When the second structure 2 is injected for the second time, the water inlet channel and the first water inlet hole 231 of the first filling body 23 are correspondingly connected, and the water outlet channel and the second water outlet hole 241 of the second filling body 24 are correspondingly connected. In addition, the structural form of the second structure 2 is not limited to the above-mentioned one, and it can have many variations.

[0052] When the main structure of the first structure body 1 is injection molded, the connecting beam 13 needs to be provided with a core-pulling opening 134 so as to form the main water channel 131 by core-pulling through the core-pulling opening 134 .

[0053] In one embodiment, a core-pulling opening 134 for pulling a core from the main water channel 131 is disposed on at least one end surface of the connecting beam 13 .

[0054] Optionally, a core pulling port 134 is provided on an end face of the connecting beam 13 close to the water channel inlet 132, and the water channel inlet 132 is provided on one side of the connecting beam 13, and the core pulling port 134 is configured to be sealed by a mold core inserted into the water channel inlet 132 when injecting the second structure 2.

[0055] Optionally, a core pulling port 134 is provided on an end face of the connecting beam 13 close to the water channel outlet 133, and the water channel inlet 133 is provided on one side of the connecting beam 13, and the core pulling port 134 is configured to be sealed by a mold core inserted into the water channel outlet 133 when injecting the second structure 2.

[0056] Optionally, the water channel inlet 132 is arranged on an end surface of the connecting beam 13 , and the water channel inlet 132 serves as the core pulling opening 134 ; and / or, the water channel outlet 133 is arranged on an end surface of the connecting beam 13 , and the water channel outlet 133 serves as the core pulling opening 134 .

[0057] like Figure 5-Figure 8In the example shown, a core pulling port 134 is provided on one end face of the connecting beam 13, and the connecting beam 13 also has a water channel inlet 132 on one side facing the central cavity of the first mounting seat 11 and a water channel outlet 133 on one side facing the central cavity of the second mounting seat 12, wherein the core pulling port 134 is located on one end face of the connecting beam 13 close to the water channel inlet 132, and the openings of the water channel inlet 132 and the core pulling port 134 are approximately perpendicular. When injecting the first filling body 23 of the second structure 2, it is necessary to insert a mold core into the water channel inlet 132 to block the water channel inlet 132 and form a first water outlet 232 connected to the water channel inlet 132. When the mold core is inserted into the water channel inlet 132, the mold core can simultaneously block the water channel inlet 132 and the core pulling port 134.

[0058] It is understandable that a core-pulling port 134 may be provided on an end face of the connecting beam 13 close to the waterway outlet 133 , and the core-pulling port 134 may be sealed by a mold core inserted into the waterway outlet 133 when the second filling body 24 of the second structure 2 is injection molded.

[0059] exist Figure 9-11 In the example shown, the water channel inlet 132 is arranged on one end surface of the connecting beam 13, and the water channel inlet 132 serves as a core pulling opening 134. The water channel outlet 133 is arranged on the other end surface of the connecting beam 13, and the water channel outlet 133 serves as another core pulling opening 134. That is, in this embodiment, core pulling can be performed at both ends of the connecting beam 13.

[0060] When the second structure 2 is injection molded, mold cores are placed at both ends of the connecting beam 13 to block the water channel inlet 132 and form a first water outlet 232 connected to the water channel inlet 132 , and to block the water channel outlet 133 and form a second water inlet 242 connected to the water channel outlet 133 .

[0061] Optionally, only the water channel inlet 132 or only the water channel outlet 133 may be provided on one end surface of the connecting beam 13 , that is, only the water channel inlet 132 or only the water channel outlet 133 may be provided as the core pulling opening 134 .

[0062] In one embodiment, if Figure 12-14 As shown, the side of the connecting beam 13 has a core-pulling opening 134 connected to the main water channel 131, and the core-pulling opening 134 extends along the length direction of the connecting beam 13. The first structure 1 also includes a side sealing plate 14 for sealing the core-pulling opening 134. The side sealing plate 14 can be fixed to the connecting beam 13 by welding.

[0063] In one embodiment, if Figure 15-17As shown, the bottom surface of the connecting beam 13 has a core-pulling opening 134 connected to the main water channel 131, and the core-pulling opening 134 extends along the length direction of the connecting beam 13. The first structure 1 also includes a bottom sealing plate 15 for sealing the core-pulling opening 134. The bottom sealing plate 15 can be fixed on the connecting beam 13 by welding.

[0064] In one embodiment, if Figure 18-Figure 20 As shown, the main structure of the first structure 1 includes a first molded body and a second molded body connected to each other, the first molded body includes a first mounting seat 11 and a first connecting beam 13A connected to the first mounting seat 11 and having an internal cavity, the second molded body includes a second mounting seat 12 and a second connecting beam 13B connected to the second mounting seat 12 and having an internal cavity, and the connecting beam 13 includes a first connecting beam 13A and a second connecting beam 13B butted against each other.

[0065] The first connecting beam 13A and the second connecting beam 13B can be fixed together by a clamping method, such as Fig.18 and Fig.19 As shown, a buckle 137 is provided on the first connecting beam 13A, and a slot 138 engaged with the buckle 137 is provided on the second connecting beam 13B. The end of the first connecting beam 13A having the first port 135 extends into the second port 136 of the second connecting beam 13B, and the buckle 137 can be engaged with the slot 138. A sealing ring 16 can be provided between the first connecting beam 13A and the second connecting beam 13B. Of course, the first molded body and the second molded body can also be fixed by other means such as welding after injection molding.

[0066] In this embodiment, the first port 135 of the end of the first connecting beam 13A connected to the second connecting beam 13B and the second port 136 of the end of the second connecting beam 13B connected to the first connecting beam 13A can both be used as core pulling ports, or a core pulling port can be set on the end face of the first connecting beam 13A having a waterway inlet 132, and a core pulling port can be set on the end face of the second connecting beam 13B having a waterway outlet 133.

[0067] It should be noted that the overall structure of the first structure 1 can be formed by one-time injection molding, that is, the main structure of the injection molding is the first structure 1. The first structure 1 can also include a main structure formed by injection molding and other auxiliary structures fixed together with the main structure. For example, the first structure 1 can include Fig.12 A side sealing plate 14 connected to the main structure for sealing the core-pulling opening 134 on the side, or including Fig.15 A bottom sealing plate 15 connected to the main structure for sealing the core-pulling opening 134 on the bottom surface, or including Fig.18The sealing ring 16 is provided in the first structure 1, and the main structure of the first structure 1 is divided into multiple parts which are respectively injection molded and then connected and fixed together to form the first structure 1. It can be understood that the first structure 1 can also have multiple variations, which will not be listed one by one here.

[0068] An embodiment of the present application further provides a concealed faucet, comprising the valve seat as described above, and further comprising a first valve core mounted on a first mounting seat 11 of the valve seat and a second valve core mounted on a second mounting seat 12 .

[0069] Among them, the first valve core is a temperature control valve core, the second valve core is a water diversion valve core, and the valve seat is provided with at least two water inlet channels respectively connected to the water inlet of the temperature control valve core, and at least two water outlet channels respectively connected to the water outlet of the water diversion valve core.

[0070] An embodiment of the present application further provides a shower device, comprising the concealed faucet as described above.

[0071] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 'present' utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0072] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0073] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A valve seat, characterized in that: include: The first structure comprises a main structure formed by injection molding of a plastic material, the main structure comprising a first mounting seat for mounting a first valve core and a second mounting seat for mounting a second valve core, and further comprising a connecting beam connected between the first mounting seat and the second mounting seat, wherein a main water channel is formed in the connecting beam, and the main water channel has a water channel inlet close to the first mounting seat and a water channel outlet close to the second mounting seat; A second structure is injection-molded on the first structure using a plastic material, and the second structure is provided with at least one water inlet channel having a water inlet and at least one water outlet channel having a water outlet; Among them, the water entering the water inlet can enter the first valve core installed on the first mounting seat through the water inlet channel, the water exiting the first valve core can enter the water channel inlet, and enter the second valve core installed on the second mounting seat from the water channel outlet, and the water exiting the second valve core flows out of the water outlet through the water outlet channel.

2. The valve seat according to claim 1, characterized in that: A core-pulling opening for pulling a core from the main water channel is arranged on at least one end surface of the connecting beam.

3. The valve seat according to claim 2, characterized in that: The core-pulling opening is arranged on an end surface of the connecting beam close to the waterway inlet, the waterway inlet is arranged on one side of the connecting beam, and the core-pulling opening is arranged to be blocked by a mold core inserted into the waterway inlet during injection molding of the second structure; and / or, The core-pulling opening is arranged on an end face of the connecting beam close to the water channel outlet, the water channel outlet is arranged on one side of the connecting beam, and the core-pulling opening is arranged to be sealed by a mold core inserted into the water channel outlet when the second structure is injected.

4. The valve seat according to claim 2, characterized in that: The water channel inlet is arranged on an end surface of one end of the connecting beam, and the water channel inlet serves as the core pulling port; and / or, the water channel outlet is arranged on an end surface of one end of the connecting beam, and the water channel outlet serves as the core pulling port.

5. The valve seat according to claim 1, characterized in that: A core-pulling opening is provided on the side of the connecting beam, and the core-pulling opening extends along the length direction of the connecting beam, and the first structure also includes a side sealing plate for sealing the core-pulling opening; Alternatively, a core-pulling opening is provided on the bottom surface of the connecting beam, and the core-pulling opening extends along the length direction of the connecting beam, and the first structure further comprises a bottom sealing plate for sealing the core-pulling opening.

6. The valve seat according to claim 1, characterized in that The main structure includes a first molded body and a second molded body connected to each other, the first molded body includes the first mounting seat and a first connecting beam connected to the first mounting seat and having an internal cavity, the second molded body includes the second mounting seat and a second connecting beam connected to the second mounting seat and having an internal cavity, and the connecting beam includes the first connecting beam and the second connecting beam butted against each other.

7. The valve seat according to any one of claims 1 to 6, characterized in that: The first mounting seat and the second mounting seat are respectively annular structures, and the second structure includes a first filling body at least partially located in the first mounting seat and a second filling body at least partially located in the second mounting seat; Among them, the first filling body is provided with a first water inlet hole connected with the water inlet channel and a first water outlet hole connected with the water channel inlet, the first water inlet hole is used to communicate with the water inlet of the first valve core, and the first water outlet hole is used to communicate with the water outlet of the first valve core; the second filling body is provided with a second water inlet hole connected with the water channel outlet and a second water outlet hole connected with the water outlet channel, the second water inlet hole is used to communicate with the water inlet of the second valve core, and the second water outlet hole is used to communicate with the water outlet of the second valve core.

8. The valve seat according to claim 7, characterized in that The second structure also includes a first shell that is injection-molded together with the outer side of the lower end of the first mounting seat and a second shell that is injection-molded together with the outer side of the lower end of the second mounting seat; It also includes a water inlet pipe body connected to the first shell and having the water inlet channel, and a water outlet pipe body connected to the second shell and having the water outlet channel; wherein the water inlet pipe body extends from the outside to the inside of the first shell and is connected to the first filling body, so that the water inlet channel is communicated with the first water inlet hole, and the water outlet pipe body extends from the outside to the inside of the second shell and is connected to the second filling body, so that the water outlet channel is communicated with the second water outlet hole.

9. The valve seat according to claim 8, characterized in that The second structure further includes an intermediate body connected between the first shell and the second shell and covering the connecting beam.

10. A concealed faucet, comprising a valve seat according to any one of claims 1 to 9, further comprising a first valve core mounted on a first mounting seat of the valve seat and a second valve core mounted on a second mounting seat; in, The first valve core is a temperature control valve core, the second valve core is a water diversion valve core, and the valve seat is provided with at least two water inlet channels respectively connected to the water inlet of the temperature control valve core, and at least two water outlet channels respectively connected to the water outlet of the water diversion valve core.

11. A shower device, characterized in that: Comprising a concealed faucet according to claim 10.

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