Hidden water tank valve assembly and water tank assembly

Abstract

The embodiment of the utility model relates to the field of pipe fittings, and provides a hidden water tank valve assembly and a water tank assembly. A hidden water tank valve assembly comprises an angle valve, a connecting pipe elbow and a locking nut. The angle valve is provided with a pipe connecting piece, and a first external thread is arranged on the outer wall of the pipe connecting piece. The connecting pipe elbow comprises an elbow body and a connector, the elbow body is provided with a connecting piece end and a connecting pipe end which are opposite, one end of the connector is embedded into the connecting piece end, the outer wall, away from the elbow body, of the connector is provided with a second external thread, and the second external thread is sleeved with the locking nut; a first internal thread matched with the first external thread is arranged on the inner wall of the connector, and the first external thread is matched with the first internal thread to achieve connection of the connector and the pipe connecting piece; the elbow body, the connector and the pipe connecting piece are communicated. The assembly is convenient to install, the main body part of the angle valve is arranged in the water tank, and even if the angle valve leaks water, the problem of water seepage of the wall can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of pipe fittings, in particular to a concealed water tank valve assembly and a water tank assembly. Background Art

[0002] Many toilets on the market use a concealed tank installation method, which is completely installed in the wall. This not only does not limit the function, but also makes the bathroom look more simple and beautiful. The water tank angle valve that matches the hidden water tank is often buried in the wall. If the angle valve leaks, water will seep into the wall.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the present utility model includes providing a hidden water tank valve assembly and a water tank assembly, aiming to improve at least one problem mentioned in the background technology.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a concealed water tank valve assembly, comprising an angle valve, a pipe elbow, and a locking nut;

[0007] The angle valve has a pipe connector, and the outer wall of the pipe connector is provided with a first external thread;

[0008] The pipe elbow includes an elbow body and a connector. The elbow body has a connecting end and a pipe end opposite to each other. One end of the connector is embedded in the connecting end. The outer wall of the connector away from the elbow body is provided with a second external thread. A locking nut is sleeved on the second external thread. A clamping space for clamping the water tank wall is formed between the locking nut and the end surface of the connecting end.

[0009] The inner wall of the connector is provided with a first internal thread matching the first external thread, and the first external thread matches the first internal thread to realize the connection between the connector and the pipe connector;

[0010] The elbow body, the connector and the pipe connector are connected.

[0011] In an optional embodiment, the pipe end is composed of a small inner diameter portion and a large inner diameter portion, and a circle of cutting grooves is provided on the outer wall of the small inner diameter portion near the large inner diameter portion.

[0012] In an optional embodiment, the inner diameter of the small inner diameter portion is 19 mm;

[0013] And / or, the inner diameter of the large inner diameter portion is 24 mm.

[0014] In an optional embodiment, the angle valve includes a handle, a valve core, a mounting sleeve, a valve body, a locking cap, and a pipe connector;

[0015] The valve body has a valve core installation cavity and a first water outlet, a first installation port and a second installation port communicated with the valve core installation cavity, wherein the first installation port and the second installation port are arranged opposite to each other on the axis of the valve body;

[0016] The end of the pipe connector away from the pipe elbow is a sleeve end, which is sleeved on the end portion of the valve body corresponding to the first installation port, and the inner wall of the end portion of the valve body corresponding to the first installation port is provided with a second internal thread; the inner wall of the sleeve end is provided with a circle of first limiting bosses protruding inwardly, and one end of the locking cap has a circle of second limiting bosses protruding outwardly, the first limiting bosses and the second limiting bosses are buckled with each other, and the outer wall of the locking cap is provided with a third external thread, the locking cap is inserted into the first installation port, and the third external thread cooperates with the second internal thread to realize the connection between the locking cap and the valve body;

[0017] The inner wall of the end portion of the valve body corresponding to the second installation opening is provided with a third internal thread, and the outer wall of one end of the installation sleeve is provided with a fourth external thread, and the third internal thread and the fourth external thread cooperate to connect the installation sleeve and the valve body;

[0018] Part of the valve core is arranged in the valve core installation cavity and the installation sleeve, and another part of the valve core is located outside the valve body and the installation sleeve. The handle is installed at the part of the valve core located outside the valve body and the installation sleeve.

[0019] In an optional embodiment, the valve core includes a core housing, a water control disc and a core shaft;

[0020] One end of the core housing is fixedly connected to the end of the mounting sleeve provided with a fourth external thread, the core housing is arranged in the valve core mounting cavity, one end of the core housing is communicated with the first mounting port, a second water outlet is arranged on the peripheral wall of the core housing, a water control disc is arranged in the core housing at a position corresponding to the second water outlet, the outer periphery of the water control disc is connected to the inner wall of the core housing, and at least one water outlet notch is provided on the water control disc;

[0021] One end of the core shaft has at least two plug pins, and a side of the water control plate away from the first mounting opening is provided with at least two plug slots corresponding to the plug pins, and the at least two plug pins are inserted into the at least two plug pins in a one-to-one correspondence;

[0022] The other end of the core shaft passes through the mounting sleeve and is connected with the handle.

[0023] In an optional embodiment, the valve core further includes a bushing and a connecting screw;

[0024] The bushing is sleeved on the end of the core shaft away from the water control disc. The end of the core shaft away from the water control disc is provided with a screw hole. A screw through hole is provided in the axial direction of the bushing. The connecting screw passes through the screw through hole and is connected in the screw hole. The connection between the bushing and the core shaft is achieved by the screw.

[0025] The outer peripheral wall of the bushing is provided with a first tooth-shaped structure, the inner wall of the handle is provided with a second tooth-shaped structure matching the first tooth-shaped structure, the handle cover is provided outside the bushing, and the first tooth-shaped structure and the second tooth-shaped structure are engaged with each other.

[0026] In an optional embodiment, the valve core further includes a first water distribution member and a second water distribution member;

[0027] The first water distribution member includes a mounting seat and a cross water distribution plate, one end of the mounting seat is embedded in the cavity wall of the valve core mounting cavity, the other end of the mounting seat is arranged in the valve core housing, and the cross water distribution plate is embedded in the mounting seat;

[0028] The second water distribution member includes a disc body and two water outlets arranged on the disc body;

[0029] In the direction from the first installation opening to the second installation opening, the first water distribution member, the second water distribution member and the water control plate are arranged in sequence.

[0030] In an optional embodiment, at least one first sealing groove is formed on the outer wall of the end portion of the valve body corresponding to the first installation opening, and a first sealing ring is disposed in each first sealing groove;

[0031] And / or, at least one second sealing groove is provided on the mounting sleeve near a position where the fourth external thread is provided, and a second sealing ring is provided in each second sealing groove.

[0032] In an optional embodiment, the outer wall of the core shaft is provided with at least one third sealing groove, and a third sealing ring is provided in each third sealing groove.

[0033] In a second aspect, the utility model provides a water tank assembly, comprising a water tank and a hidden water tank valve assembly as described in any one of the aforementioned embodiments, wherein the connector passes through the side wall of the water tank, and the side wall of the water tank is clamped between the locking nut and the end face of the connector end.

[0034] The beneficial effects of the hidden water tank valve assembly and water tank assembly provided by the embodiment of the utility model include:

[0035] The hidden water tank valve assembly provided by the utility model has a main body of the angle valve located inside the water tank when in use, which can save space outside the water tank; since the main body of the angle valve is installed inside the water tank, even if water leaks, the leak will only be inside the water tank. Compared with angle valves installed in the wall, it can avoid the problem of wall seepage, is easy to maintain, and has low later maintenance costs; and compared with traditional angle valves that are connected to the elbow and then welded, the installation process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 An exploded view of the hidden water tank valve assembly provided in this embodiment;

[0038] Figure 2 A cross-sectional view of the concealed water tank valve assembly provided in this embodiment;

[0039] Figure 3 It is a cross-sectional view of the angle valve;

[0040] Figure 4 This is a schematic diagram of the angle valve structure after removing the valve body, core shell, handle and pipe connector;

[0041] Figure 5 It is a structural schematic diagram of the valve core at a first viewing angle;

[0042] Figure 6 Schematic diagram of the structure of the valve core at a second viewing angle;

[0043] Figure 7 for Figure 6 Sectional view of the AA plane;

[0044] Figure 8 for Figure 6 Cross-sectional view of the middle BB plane;

[0045] Figure 9 This is a structural diagram of the hidden water tank valve assembly when it is installed in the water tank and the first water outlet is facing upwards;

[0046] Figure 10 This is a structural diagram of the hidden water tank valve assembly when it is installed in the water tank with the first water outlet facing downward.

[0047] Icon: 10-Concealed water tank valve assembly;

[0048] 100-angle valve; 110-pipe connector; 111-first external thread; 112-sleeve end; 113-first limiting boss; 120-handle; 121-second tooth-shaped structure; 130-valve core; 131-core housing; 132-water control plate; 134-core shaft; 135-second water outlet; 136-water outlet gap; 137-plug pin; 138-plug slot; 139-bushing; 140-screw; 143-first tooth-shaped structure; 145-first water distribution component; 146-mounting seat; 14 7 - Cross water distribution plate; 148 - Second water distribution member; 149 - Water outlet; 160 - Mounting sleeve; 161 - Fourth external thread; 170 - Valve body; 171 - Valve core mounting cavity; 172 - First water outlet; 173 - First mounting port; 174 - Second mounting port; 175 - Second internal thread; 176 - Third internal thread; 180 - Locking cap; 181 - Second limiting boss; 182 - Third external thread; 192 - First sealing ring; 194 - Second sealing ring; 196 - Third sealing ring.

[0049] 200 - elbow; 210 - elbow body; 211 - connector end; 212 - pipe end; 213 - small inner diameter portion; 214 - large inner diameter portion; 215 - cutting groove; 220 - connector; 221 - second external thread; 222 - first internal thread;

[0050] 300-lock nut;

[0051] 20-water tank; 21-water tank wall. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0055] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0057] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0058] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a concealed water tank valve assembly 10 , including an angle valve 100 , a pipe elbow 200 and a locking nut 300 .

[0059] The angle valve 100 has a pipe connector 110 , and an outer wall of the pipe connector 110 is provided with a first external thread 111 ;

[0060] The pipe elbow 200 includes an elbow body 210 and a connector 220. The elbow body 210 has a connecting end 211 and a pipe end 212 facing each other. One end of the connector 220 is embedded in the connecting end 211. The outer wall of the connector 220 away from the elbow body 210 is provided with a second external thread 221. A locking nut 300 is sleeved on the second external thread 221. A clamping space is formed between the locking nut 300 and the end surface of the connecting end 211 for clamping the water tank wall 21.

[0061] The inner wall of the connector 220 is provided with a first internal thread 222 that matches the first external thread 111. The first external thread 111 matches the first internal thread 222 to achieve the connection between the connector 220 and the pipe connector 110.

[0062] The elbow body 210 , the connector 220 and the pipe connector 110 are connected.

[0063] The installation method of the hidden water tank valve assembly 10 provided in the embodiment of the present invention is: pre-sleeve the locking nut 300 on the pipe connector 110, set the main part of the angle valve 100 inside the water tank 20, and make the pipe connector 110 pass through the water tank wall 21 and be threadedly connected with the connector 220 of the pipe elbow 200. At this time, the connector 220 extends into the water tank 20, and then the locking nut 300 is sleeved on the connector 220 through a threaded connection. At this time, the locking nut 300 and the end face of the connector end 211 clamp the water tank wall 21.

[0064] After the concealed water tank valve assembly 10 is installed on the water tank 20 , the water pipe is installed on the pipe end 212 of the elbow body 210 to complete the installation.

[0065] The hidden water tank valve assembly 10 provided by the present invention has a main body of the angle valve 100 located inside the water tank 20 when in use, which can save space outside the water tank 20. Since the main body of the angle valve 100 is installed inside the water tank 20, even if water leaks, the leak will only be inside the water tank 20. Compared with the angle valve 100 installed in the wall, the problem of water seepage in the wall can be avoided, maintenance is convenient, and the later maintenance cost is low. Moreover, compared with the traditional angle valve 100 that is connected to the elbow and then welded, the installation process is reduced.

[0066] Optionally, the elbow body 210 of the connecting elbow 200 is made of PPR, and the connecting head 220 is made of metal.

[0067] Optionally, the pipe end 212 is composed of a small inner diameter portion 213 and a large inner diameter portion 214 , and a circle of cutting grooves 215 is provided on the outer wall of the small inner diameter portion 213 near the large inner diameter portion 214 .

[0068] Since the diameters of household pipes currently vary, the pipe end 212 is composed of a small inner diameter portion 213 and a large inner diameter portion 214, and a cutting groove 215 is provided on the outer wall of the small inner diameter portion 213. This allows the pipe elbow 200 to be suitable for installing household pipes of two different sizes. If the outer diameter of the pipe is larger, it can be installed directly without cutting. If it is smaller, the pipe elbow 200 can be cut from the cutting groove 215 before installation.

[0069] Optionally, the inner diameter of the small inner diameter portion 213 is 19 mm, and the 19 mm small inner diameter portion 213 matches a DN20 pipe.

[0070] Optionally, the inner diameter of the large inner diameter portion 214 is 24 mm, and the 24 mm large inner diameter portion 214 matches a DN25 pipe.

[0071] Specifically, if Figure 3 As shown, the angle valve 100 includes a handle 120, a valve core 130, a mounting sleeve 160, a valve body 170, a locking cap 180 and a pipe connector 110;

[0072] The valve body 170 has a valve core installation cavity 171 and a first water outlet 172, a first installation port 173 and a second installation port 174 communicating with the valve core installation cavity 171. The first installation port 173 and the second installation port 174 are arranged opposite to each other on the axis of the valve body 170.

[0073] One end of the pipe connector 110 away from the pipe elbow 200 is a sleeve end 112, which is sleeved on the end of the valve body 170 corresponding to the first installation port 173. The inner wall of the end of the valve body 170 corresponding to the first installation port 173 is provided with a second internal thread 175; the inner wall of the sleeve end 112 is provided with a circle of first limiting bosses 113 protruding inwardly, and one end of the locking cap 180 has a circle of second limiting bosses 181 protruding outwardly. The first limiting bosses 113 and the second limiting bosses 181 are buckled with each other. The outer wall of the locking cap 180 is provided with a third external thread 182. The locking cap 180 is inserted into the first installation port 173. The third external thread 182 cooperates with the second internal thread 175 to connect the locking cap 180 and the valve body 170.

[0074] A third internal thread 176 is provided on the inner wall of the end portion of the valve body 170 corresponding to the second mounting opening 174 , and a fourth external thread 161 is provided on the outer wall of one end of the mounting sleeve 160 . The third internal thread 176 and the fourth external thread 161 cooperate to connect the mounting sleeve 160 and the valve body 170 .

[0075] Part of the valve core 130 is arranged in the valve core installation cavity 171 and the installation sleeve 160, and another part of the valve core 130 is located outside the valve body 170 and the installation sleeve 160. The handle 120 is installed in the part of the valve core 130 located outside the valve body 170 and the installation sleeve 160.

[0076] The water flows from the pipe elbow 200 through the locking cap 180 to the valve core installation cavity 171. The valve core 130 is rotated by controlling the handle 120 to control the water flow to be discharged or closed from the first water outlet 172. Since the locking cap 180 is mutually engaged with the first limiting boss 113 and the second limiting boss 181 at the sleeve end 112, the valve body 170, the valve core 130 and the handle 120 can be rotated as a whole relative to the pipe connector 110, so that the angle valve 100 has the function of universal rotation. In this way, the installation of the angle valve 100 is more convenient. Even if the angle of the angle valve 100 is not correct when it is installed, it can eventually reach a suitable angle through rotation.

[0077] Furthermore, if Figures 4 to 8 As shown, the valve core 130 includes a core housing 131 , a water control disc 132 and a core shaft 134 ;

[0078] One end of the core housing 131 is fixedly connected to the end of the mounting sleeve 160 provided with a fourth external thread 161. The core housing 131 is disposed in the valve core mounting cavity 171. One end of the core housing 131 is communicated with the first mounting port 173. A second water outlet 135 is provided on the peripheral wall of the core housing 131. A water control tray 132 is disposed in the core housing 131 at a position corresponding to the second water outlet 135. The outer periphery of the water control tray 132 is connected to the inner wall of the core housing 131. The water control tray 132 is provided with at least one water outlet notch 136.

[0079] like Figure 4 and Figure 8 As shown, one end of the core shaft 134 has at least two plug pins 137, and a surface of the water control plate 132 away from the first mounting opening 173 is provided with at least two plug slots 138 corresponding to the plug pins 137, and the at least two plug pins 137 are inserted into the at least two plug pins 137 in a one-to-one correspondence;

[0080] The other end of the core shaft 134 passes through the mounting sleeve 160 and is connected to the handle 120 .

[0081] After passing through the locking cap 180 , the water flows to the water control tray 132 . If the water outlet gap 136 on the water control tray 132 is connected to the water outlet on the core shell 131 , the water flows through the water outlet gap 136 and the second water outlet 135 in sequence and finally flows out from the first water outlet 172 .

[0082] Furthermore, if Figure 3 、 Figure 7 and Figure 8 As shown, the valve core 130 further includes a bushing 139 and a connecting screw 140;

[0083] The bushing 139 is sleeved on the end of the core shaft 134 away from the water control disc 132. The end of the core shaft 134 away from the water control disc 132 is provided with a screw hole. A screw 140 through-hole is provided on the bushing 139 in the axial direction. The connecting screw 140 passes through the screw through-hole 140 and is connected to the screw hole. The bushing 139 and the core shaft 134 are connected by the screw 140.

[0084] The outer wall of the bushing 139 is provided with a first tooth structure 143, and the inner wall of the handle 120 is provided with a second tooth structure 121 matching the first tooth structure 143. The handle 120 is sleeved outside the bushing 139, and the first tooth structure 143 and the second tooth structure 121 are engaged with each other.

[0085] The specific arrangement of the core sleeve and the connecting screw 140 enables the water control pan 132 to rotate along with the handle 120, thereby realizing the opening and closing of the water flow.

[0086] Furthermore, if Figure 4 、 Figure 7 and Figure 8As shown, the valve core 130 further includes a first water distribution member 145 and a second water distribution member 148;

[0087] The first water distribution member 145 includes a mounting seat 146 and a cross water distribution plate 147. One end of the mounting seat 146 is embedded in the cavity wall of the valve core mounting cavity 171, and the other end of the mounting seat 146 is disposed in the valve core 130 housing. The cross water distribution plate 147 is embedded in the mounting seat 146.

[0088] The second water distribution member 148 includes a disc body and two water outlets 149 provided on the disc body;

[0089] In the direction from the first installation opening 173 to the second installation opening 174 , the first water distribution member 145 , the second water distribution member 148 and the water control tray 132 are sequentially arranged.

[0090] Water entering core housing 131 sequentially passes through cross-shaped water diversion plate 147, water inlet 149, water outlet notch 136, and second water outlet 135, ultimately exiting through first water outlet 172. First water diversion element 145 acts as an end-face seal. When the water control plate rotates to connect water inlet 149 with the water outlet notch, the waterway opens. When the water control plate rotates to disconnect water inlet 149 from the water outlet notch, the waterway closes. Therefore, second water diversion element 148 functions to connect and close the waterway.

[0091] Furthermore, each water outlet 149 provided on the second water diversion member 148 has a triangular cross-section parallel to the disk body, and the diameter of each water outlet 149 decreases from large to small and then remains constant from the first mounting opening 173 to the second mounting opening 174. This structure of the water outlet 149 optimizes the water flow path and reduces resistance.

[0092] Furthermore, at least one first sealing groove is formed on the outer wall of the end portion of the valve body 170 corresponding to the first installation opening 173 , and a first sealing ring 192 is disposed in each first sealing groove.

[0093] Furthermore, at least one second sealing groove is provided on the mounting sleeve 160 near the position where the fourth external thread 161 is provided, and a second sealing ring 194 is provided in each second sealing groove.

[0094] Furthermore, at least one third sealing groove is provided on the outer wall of the core shaft 134 , and a third sealing ring 196 is provided in each third sealing groove.

[0095] The provision of the sealing ring can ensure that the concealed water tank valve assembly 10 has good sealing performance after being installed on the water tank 20, ensuring that it is not easy to leak.

[0096] like Figure 9 and Figure 10As shown, the present invention also provides a water tank 20 assembly, including a water tank 20 and a hidden water tank valve assembly 10 provided in an embodiment of the present invention, the connector 220 passes through the side wall of the water tank 20, and the side wall of the water tank 20 is clamped between the locking nut 300 and the end face of the connector end 211.

[0097] In summary, the hidden water tank valve assembly 10 and water tank 20 assembly provided by the present invention have the following features:

[0098] 1. The main part of the angle valve 100 is set in the water tank 20, which is easy to install. Compared with the angle valve 100 assembly installed in the wall, the hidden water tank valve assembly 10 of the utility model will not cause water seepage into the wall due to leakage. If the angle valve 100 is damaged, it can be directly replaced through the water tank 20 cover to avoid damaging the wall, and the subsequent maintenance cost is low;

[0099] 2. The pipe end 212 of the pipe elbow 200 is welded through the water inlet pipe, which reduces the number of steps compared to the traditional angle valve 100 which is connected to the elbow and then welded;

[0100] 3. In the preferred embodiment, the angle valve 100 has the function of universal rotation, is easy to install, can facilitate the use of the internal space, is not limited to the installation angle, can ensure that the water outlet can finally be at a suitable angle. If the water outlet is facing upward after installation, Figure 9 As shown, just rotate the angle valve 100 to make the water outlet face downwards. Figure 10 As shown;

[0101] 4. In a preferred embodiment, the arrangement of the small inner diameter portion 213 and the large inner diameter portion 214 and the cutting groove 215 of the pipe end 212 of the pipe elbow 200 enables the concealed water tank valve assembly 10 to be suitable for installing pipes of different diameters.

[0102] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A concealed water tank valve assembly, characterized in that: Including angle valve, pipe elbow and lock nut; The angle valve has a pipe connector, and the outer wall of the pipe connector is provided with a first external thread; The pipe elbow includes an elbow body and a connector, the elbow body has a connecting end and a pipe end opposite to each other, one end of the connector is embedded in the connecting end, the outer wall of the connector away from the elbow body is provided with a second external thread, the locking nut is sleeved on the second external thread, and a clamping space for clamping the water tank wall is formed between the locking nut and the end surface of the connecting end; The inner wall of the connector is provided with a first internal thread matching the first external thread, and the first external thread matches the first internal thread to realize the connection between the connector and the pipe connector; The elbow body, the connector and the pipe connector are in communication.

2. The concealed water tank valve assembly according to claim 1, characterized in that: The pipe end is composed of a small inner diameter portion and a large inner diameter portion, and a circle of cutting grooves is provided on the outer wall of the small inner diameter portion near the large inner diameter portion.

3. The concealed water tank valve assembly according to claim 2, characterized in that: The inner diameter of the small inner diameter portion is 19 mm; And / or, the inner diameter of the large inner diameter portion is 24 mm.

4. The concealed water tank valve assembly according to claim 1, characterized in that: The angle valve comprises a handle, a valve core, a mounting sleeve, a valve body, a locking cap and the pipe connector; The valve body has a valve core installation cavity and a first water outlet, a first installation port and a second installation port communicated with the valve core installation cavity, wherein the first installation port and the second installation port are arranged opposite to each other on the axis of the valve body; One end of the pipe connector away from the pipe elbow is a sleeve end, and the sleeve end is sleeved on the end portion of the valve body corresponding to the first installation port, and the inner wall of the end portion of the valve body corresponding to the first installation port is provided with a second internal thread; the inner wall of the sleeve end is provided with a circle of first limiting bosses protruding inwardly, and one end of the locking cap has a circle of second limiting bosses protruding outwardly, the first limiting bosses and the second limiting bosses are buckled with each other, and the outer wall of the locking cap is provided with a third external thread, and the locking cap is inserted into the first installation port, and the third external thread cooperates with the second internal thread to realize the connection between the locking cap and the valve body; The inner wall of the end portion of the valve body corresponding to the second installation port is provided with a third internal thread, and the outer wall of one end of the installation sleeve is provided with a fourth external thread, and the third internal thread and the fourth external thread cooperate to connect the installation sleeve and the valve body; Part of the valve core is arranged in the valve core installation cavity and the installation sleeve, another part of the valve core is located outside the valve body and the installation sleeve, and the handle is installed at the part of the valve core located outside the valve body and the installation sleeve.

5. The concealed water tank valve assembly according to claim 4, characterized in that: The valve core includes a core housing, a water control disc and a core shaft; One end of the core housing is fixedly connected to the end of the mounting sleeve provided with the fourth external thread, the core housing is arranged in the valve core mounting cavity, one end of the core housing is communicated with the first mounting port, a second water outlet is arranged on the peripheral wall of the core housing, the water control disc is arranged in the core housing corresponding to the second water outlet, the outer periphery of the water control disc is connected to the inner wall of the core housing, and at least one water outlet notch is provided on the water control disc; One end of the core shaft has at least two plug-in pins, and a side of the water control tray away from the first mounting opening is provided with at least two plug-in slots corresponding to the plug-in pins, and the at least two plug-in pins are inserted into the at least two plug-in pins in a one-to-one correspondence; The other end of the core shaft passes through the mounting sleeve and is connected to the handle.

6. The concealed water tank valve assembly according to claim 5, characterized in that: The valve core also includes a bushing and connecting screws; The bushing is sleeved on the end of the core shaft away from the water control disc, a screw hole is provided on the end of the core shaft away from the water control disc, a screw through hole is provided on the upper axis direction of the bushing, the connecting screw passes through the screw through hole and is connected to the screw hole, and the bushing and the core shaft are connected by the screw; The outer peripheral wall of the bushing is provided with a first tooth-shaped structure, the inner wall of the handle is provided with a second tooth-shaped structure matching the first tooth-shaped structure, the handle is provided outside the bushing, and the first tooth-shaped structure and the second tooth-shaped structure are engaged with each other.

7. The concealed water tank valve assembly according to claim 5, characterized in that: The valve core also includes a first water distribution component and a second water distribution component; The first water distribution member includes a mounting seat and a cross water distribution plate, one end of the mounting seat is embedded in the cavity wall of the valve core mounting cavity, the other end of the mounting seat is arranged in the valve core housing, and the cross water distribution plate is embedded in the mounting seat; The second water distribution member includes a disc body and two water outlets provided on the disc body; In the direction from the first installation opening to the second installation opening, the first water distribution member, the second water distribution member and the water control tray are arranged in sequence.

8. The concealed water tank valve assembly according to claim 5, characterized in that: The outer wall of the end portion of the valve body corresponding to the first installation opening is provided with at least one first sealing groove, and a first sealing ring is provided in each of the first sealing grooves; And / or, at least one second sealing groove is provided on the mounting sleeve near a position where the fourth external thread is provided, and a second sealing ring is provided in each of the second sealing grooves.

9. The concealed water tank valve assembly according to claim 5, characterized in that: The outer wall of the core shaft is provided with at least one third sealing groove, and a third sealing ring is provided in each of the third sealing grooves.

10. A water tank assembly, characterized in that: It comprises a water tank and a concealed water tank valve assembly as claimed in any one of claims 1 to 9, wherein the connector passes through the side wall of the water tank, and the side wall of the water tank is clamped between the locking nut and the end face of the connector end.

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