Solenoid valve faucet

Abstract

The present application relates to a solenoid valve faucet, comprising a faucet body and a solenoid valve core group; the faucet body comprises a water inlet and a water outlet, the water outlet is arranged obliquely toward the bottom end of the water inlet; the solenoid valve core group comprises a valve seat, the valve seat is provided with a water inlet hole and a water flow chamber, the valve seat is provided with a connecting channel connecting the water inlet hole and the water flow chamber; the water flow chamber comprises a water outlet chamber and a water inlet chamber, the connecting channel is connected with one end of the water inlet chamber toward the water outlet chamber; the water outlet is provided with a water outlet pipe, the valve seat is also provided with a water outlet channel; the water outlet channel is inclined toward the bottom end of the water outlet; the solenoid valve core group also comprises a control component for controlling the disconnection or connection between the water inlet chamber and the water outlet chamber, the control component closes the opening of the water inlet chamber and the valve seat toward the top end of the water inlet. The present application has the effect of solving the problem of reducing the water storage inside the existing faucet.

Description

Technical Field

[0001] The present application relates to the field of faucets, and in particular to a solenoid valve faucet. Background Art

[0002] Currently, most faucets on the market are mechanical structures, mainly composed of faucet valve core and faucet body. There are three main types of faucet valve cores: ceramic valve core, stainless steel valve core and rubber valve core, which determine the service life of the faucet. Faucet bodies are currently mostly made of brass.

[0003] With the development of intelligence, induction faucets have appeared on the market, which are controlled by solenoid valves. However, the faucet and the solenoid valve are mostly two parts. The faucet still uses the original mechanical structure, adding an infrared sensor, and the solenoid valve is installed separately in a control box. Such a structure is complex and heavy, and is not suitable for application in the aviation field.

[0004] In addition, existing induction faucets all have the problem of water accumulation. There will be a section of water flow in the faucet that cannot be drained cleanly. Such a structure may cause the faucet to freeze and become unusable in winter or under low temperature conditions. Summary of the invention

[0005] In order to reduce the problem of water accumulation inside the existing faucets, the present application provides a solenoid valve faucet.

[0006] The solenoid valve faucet provided in this application adopts the following technical solution:

[0007] A solenoid valve faucet, comprising a faucet body and a solenoid valve core assembly;

[0008] The faucet body comprises a water inlet with an opening at the bottom and a hollow interior, and a water outlet located at the side of the water inlet and connected to the interior of the water inlet, wherein the water outlet is arranged obliquely toward the bottom end of the water inlet;

[0009] The solenoid valve core group is located inside the water inlet part;

[0010] The solenoid valve core assembly includes a valve seat, an end surface of the valve seat facing the bottom end of the water inlet portion is provided with a water inlet hole, an end surface of the valve seat facing the top end of the water inlet portion is provided with a water flow cavity, and a connecting channel connecting the water inlet hole and the water flow cavity is provided inside the valve seat;

[0011] The water flow chamber includes a water outlet chamber and a water inlet chamber that connects the water outlet chamber with an end surface of a valve seat toward the top of the water inlet portion, and the communication channel is connected with an end of the water inlet chamber toward the water outlet chamber;

[0012] A water outlet pipe is provided inside the water outlet portion, and a water outlet channel is also provided inside the valve seat, one end of the water outlet channel is connected to the water outlet cavity, and the other end of the water outlet channel is connected to the water outlet pipe; the water outlet channel is inclined toward the bottom end of the water outlet portion from one end connected to the water outlet cavity to one end connected to a side wall surface of the valve seat facing the water outlet portion;

[0013] The electromagnetic valve core group also includes a control component for controlling the disconnection or connection between the water inlet chamber and the water outlet chamber, and the control component closes the water inlet chamber and the opening of the valve seat toward the top of the water inlet part.

[0014] By adopting the above technical solution, when it is necessary to control the electromagnetic faucet to discharge water, the control component connects the water inlet chamber and the water outlet chamber, and the water entering from the water inlet hole flows along the connecting channel, the water inlet chamber and the water outlet chamber of the water flow chamber, and finally flows into the water outlet pipe, and finally is discharged. When it is necessary to stop the water discharge, the control component disconnects the water inlet chamber and the water outlet chamber of the water flow chamber. Since the water outlet part and the water outlet channel are both tilted downward, the water originally located in the water outlet channel flows out along the water outlet channel, reducing the water storage inside the electromagnetic valve faucet.

[0015] Optionally, the transverse cross-sectional area of ​​the water inlet chamber is larger than the cross-sectional area of ​​the water outlet chamber, thereby forming a step between the water inlet chamber and the water outlet chamber; the connecting channel is connected to the water inlet chamber and the connecting position is located on the side wall of the step facing the water inlet chamber; the control component includes a core column that closes the opening between the water inlet chamber and the top end face of the valve seat facing the water inlet, and the interior of the core column is provided with a mounting hole connected to the water flow chamber, one end of the mounting hole is open and the other end is closed, a moving iron core is slidably connected to the interior of the mounting hole, an elastomer is provided between the moving iron core and the closed end of the mounting hole, and an electromagnetic coil is provided on the outside of the core column. When the electromagnetic coil is energized, the moving iron core moves toward the closed end of the mounting hole, at which time the elastomer is in a compressed state, and the moving iron core and the step are in a separated state; when the electromagnetic coil is de-energized, the moving iron core abuts against the step to disconnect the water inlet chamber and the water outlet chamber.

[0016] By adopting the above technical solution, when the electromagnetic coil is energized, the moving iron core moves toward the closed end of the mounting hole, and the moving iron core is separated from the step, thereby connecting the water inlet chamber and the water outlet chamber; when the electromagnetic coil is de-energized, the moving iron core abuts against the step under the action of the elastic part, thereby disconnecting the water inlet chamber and the water outlet chamber.

[0017] Optionally, a receiving hole is provided on an end surface of the moving iron core facing the mounting hole, and the elastic body is located in the receiving hole. When the moving iron core abuts against the closed end of the mounting hole, the elastic body is in a compressed state.

[0018] By adopting the above technical solution, the accommodating hole can restrict the elastic body, so that the compression direction of the elastic body is fixed and it is not easy to twist.

[0019] Optionally, a pressure relief hole connecting the accommodating hole with the water flow chamber is provided in the moving iron core.

[0020] By adopting the above technical solution, the pressure relief hole connects the mounting hole with the water flow chamber. When the moving iron core moves toward the closed end of the mounting hole, the air between the moving iron core and the closed end of the mounting hole can enter the water flow chamber along the pressure relief hole, thereby facilitating the movement of the moving iron core.

[0021] Optionally, the core column includes a main column and a sealing portion located at one end of the main column facing the valve seat, the sealing portion closes the opening of the water inlet chamber, the transverse cross-sectional area of ​​the sealing portion is larger than the transverse cross-sectional area of ​​the main column, the electromagnetic coil is located outside the main column and abuts against the sealing portion, and a retaining ring is provided at one end of the main column away from the sealing portion, and the retaining ring and the sealing portion clamp and fix the electromagnetic coil.

[0022] By adopting the above technical solution, it is convenient to install the electromagnetic coil on the core column, and when maintenance is needed later, the electromagnetic coil can be quickly disassembled and assembled.

[0023] Optionally, a three-way valve is also included, one interface of the three-way valve is connected to the water inlet, one interface is connected to a drain pipe, and the remaining interface is used to connect to a water source; a pressure relief hole is provided on the core column for connecting the water flow chamber with the inner cavity of the water inlet; when the moving iron core disconnects the water inlet chamber and the water outlet chamber, the pressure relief hole connects the water flow chamber with the inner cavity of the water inlet; when the moving iron core connects the water inlet chamber and the water outlet chamber, the moving iron core closes the pressure relief hole.

[0024] By adopting the above technical solution, the three-way valve connects the drain pipe with the water inlet hole, and the water in the connecting channel and the water inlet cavity can be discharged through the drain pipe, thereby discharging the water inside the valve seat, further reducing the water accumulation inside the solenoid valve faucet.

[0025] Optionally, a pipe butt joint is installed at the water inlet hole.

[0026] By adopting the above technical solution, it is convenient to connect the water inlet hole with the water supply pipe.

[0027] Optionally, the top end of the water inlet is open, and a cap is provided at the top end of the water inlet for closing the opening at the top end of the water inlet.

[0028] By adopting the above technical solution, it is convenient to install the electromagnetic valve core group into the water inlet part.

[0029] Optionally, a distance is left between the water inlet hole and the bottom end of the water inlet part, an inspection port is provided on the side wall of the water inlet part, the inspection port is located between the valve seat and the bottom end of the water inlet part, and a cover for closing the inspection port is provided on the water inlet part, and the cover is detachably connected to the water inlet part.

[0030] By adopting the above technical solution, it is convenient to inspect and repair the water inlet of the valve seat.

[0031] Optionally, a plurality of convex rings arranged along the axial direction of the water inlet are arranged inside the water inlet.

[0032] By adopting the above technical solution, the structural strength of the water inlet is increased, so that the water inlet is not prone to bending.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. When the water stops flowing, the control component disconnects the water inlet and outlet chambers of the water flow chamber. Since the water outlet and the water outlet channel are both tilted downward, the water originally in the water outlet channel flows out along the water outlet channel, reducing the water inside the solenoid valve faucet;

[0035] 2. The three-way valve connects the drain pipe with the water inlet hole. The water in the connecting channel and the water inlet cavity can be discharged through the drain pipe, thereby discharging the water inside the valve seat and further reducing the water accumulation inside the solenoid valve faucet. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a solenoid valve faucet according to the first embodiment of the present application;

[0037] Figure 2 is a cross-sectional view of a solenoid valve faucet according to Embodiment 1 of the present application;

[0038] Figure 3 It is a structural schematic diagram of the solenoid valve core group of the solenoid valve faucet of the first embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of the faucet body in the first embodiment of the present application when the cover is removed from the inspection port;

[0040] Figure 5 is a cross-sectional view of a solenoid valve faucet according to the second embodiment of the present application;

[0041] Figure 6 It is a structural schematic diagram of the solenoid valve core group of the solenoid valve faucet of the second embodiment of the present application.

[0042] Explanation of the reference numerals: 1. faucet body; 11. water inlet; 111. bottom; 112. top; 113. inspection port; 114. sealing cover; 115. convex ring; 12. water outlet; 13. cap; 2. solenoid valve core assembly; 21. valve seat; 211. water inlet hole; 212. water flow chamber; 2121. water inlet chamber; 2122. water outlet chamber; 213. connecting channel; 214. water outlet channel; 22. core column; 221. main column; 222. sealing part; 223. mounting hole; 224. pressure relief hole; 23. electromagnetic coil; 24. retaining ring; 25. moving iron core; 251. accommodating hole; 252. pressure relief hole; 26. compression spring; 3. pipe docking joint; 4. nozzle; 5. water outlet pipe; 6. three-way valve; 7. drain pipe. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-6 This application is described in further detail.

[0044] The embodiment of the present application discloses a solenoid valve faucet.

[0045] Reference Figure 1 , Figure 2 The solenoid valve faucet includes a faucet body 1 and a solenoid valve core group 2 installed inside the faucet body 1.

[0046] Reference Figure 2 The faucet body 1 includes a water inlet 11 which is cylindrical and open at both ends and hollow inside, and a water outlet 12 which is located on the side of the water inlet 11 and communicates with the inside of the water inlet 11. The water inlet 11 and the water outlet 12 are cast as one piece. The faucet body 1 is made of aluminum alloy and the surface is chrome-plated. At the two ends of the water inlet 11, one end is the bottom end 111 of the water inlet 11, and the other end is the top end 112. The water outlet 12 is inclined in the direction where the bottom end 111 of the water inlet 11 is located. When the solenoid valve faucet is in use, the water inlet 11 is in a vertical state, the bottom end 111 of the water inlet 11 is located at the bottom, and the top end 112 is located at the top.

[0047] Reference Figure 2 , Figure 3 The solenoid valve core assembly 2 includes a valve seat 21 fixed inside the water inlet 11, and a space is left between the valve seat 21 and the side wall of the water inlet 11. A distance is left between the valve seat 21 and the end face of the bottom end 111 of the water inlet 11. An end face of the valve seat 21 facing the bottom end 111 of the water inlet 11 is processed with a water inlet hole 211, and the water inlet hole 211 is processed as a threaded hole. A pipe butt joint 3 is threadedly connected in the water inlet hole 211, and the pipe butt joint 3 adopts a pagoda joint.

[0048] The valve seat 21 has a water flow cavity 212 formed on one end surface facing the top end 112 of the water inlet portion 11, and the water flow cavity 212 is connected to the water inlet hole 211 through a connecting channel 213. Water entering the water inlet hole 211 flows into the water flow cavity 212 along the connecting channel 213. The number of connecting channels 213 is 3 in this embodiment, and they are arranged in a circular array with the axis of the valve seat 21 as the center.

[0049] The water flow chamber 212 includes a cylindrical water inlet chamber 2121 and a water outlet chamber 2122, wherein the water outlet chamber 2122 is connected to the end face of the valve seat 21 facing the top end 112 of the water inlet portion 11, and the water outlet chamber 2122 is located on the side of the water inlet chamber 2121 away from the top end 112 of the water inlet portion 11. The transverse cross-sectional area of ​​the water inlet chamber 2121 is larger than the transverse cross-sectional area of ​​the water outlet chamber 2122, so that a step is formed at the joint position of the water inlet chamber 2121 and the water outlet chamber 2122. The part where the connecting channel 213 is connected to the water flow chamber 212 is located on the side wall surface of the step facing the water inlet chamber 2121.

[0050] A cylindrical core column 22 is provided at one end of the valve seat 21 facing the top end 112 of the water inlet portion 11, and the core column 22 is coaxially arranged with the valve seat 21. The core column 22 includes a main column 221 and a plugging portion 222 located at one end of the main column 221 facing the valve seat 21, and the main column 221 and the plugging portion 222 are integrally formed. The diameter of the plugging portion 222 is greater than the diameter of the main column 221. The diameter of the main column 221 is smaller than the diameter of the water inlet cavity 2121. An internal thread is processed on the cavity wall of the water inlet cavity 2121, and an external thread matching the internal thread on the cavity wall of the water inlet cavity 2121 is processed on the outer surface of the plugging portion 222. The plugging portion 222 is threadedly connected to the water inlet cavity 2121 to close the opening of the end of the water inlet cavity 2121 away from the water outlet cavity 2122. The plugging portion 222 is threadedly connected to the valve seat 21 and sealed by a sealing ring.

[0051] An electromagnetic coil 23 is installed on the outside of the main column 221. One end of the main column 221 away from the blocking portion 222 passes through the electromagnetic coil 23 to be exposed. A retaining ring 24 is externally threadedly connected to one end of the main column 221 away from the blocking portion 222. The retaining ring 24 and the blocking portion 222 clamp and fix the electromagnetic coil 23 on the main column 221.

[0052] The core column 22 is provided with a mounting hole 223 connected to the water flow chamber 212, and the mounting hole 223 is a blind hole. The mounting hole 223 is arranged opposite to the water outlet chamber 2122. A moving iron core 25 is slidably connected inside the mounting hole 223, and a compression spring 26 is arranged between the moving iron core 25 and the closed end of the mounting hole 223. One end of the compression spring 26 abuts against the moving iron core 25, and the other end of the compression spring 26 abuts against the end surface of the closed end of the mounting hole 223.

[0053] The end surface of the movable iron core 25 facing the closed end of the mounting hole 223 is provided with a receiving hole 251, and the depth of the receiving hole 251 is shorter than the length of the compression spring 26 in the free state. The size of the receiving hole 251 enables the compression spring 26 to be installed inside the receiving hole 251. When the movable iron core 25 abuts against the end surface of the closed end of the mounting hole 223, the compression spring 26 is in a compressed state.

[0054] A pressure relief hole 252 is provided inside the moving iron core 25 to connect the receiving hole 251 with the water flow cavity 212 .

[0055] The axial length of the moving iron core 25 is greater than the hole depth of the mounting hole 223. One end of the moving iron core 25 is located inside the mounting hole 223, and the other end of the moving iron core 25 extends into the water flow cavity 212. The diameter of the end of the moving iron core 25 extending into the water flow cavity 212 is greater than the diameter of the water outlet cavity 2122 and smaller than the diameter of the water inlet cavity 2121.

[0056] When the moving iron core 25 moves toward the direction of the water outlet chamber 2122, the moving iron core 25 is attached to the side surface of the step facing the water inlet chamber 2121, thereby separating the water inlet chamber 2121 from the water outlet chamber 2122. When the moving iron core 25 moves toward the closed end of the mounting hole 223 and abuts against the end surface of the closed end of the mounting hole 223, the moving iron core 25 is separated from the step, and at this time, the water inlet chamber 2121, the water outlet chamber 2122 and the connecting channel 213 are connected.

[0057] When the electromagnetic coil 23 is energized, the moving iron core 25 moves toward the closed end of the mounting hole 223 , thereby connecting the water inlet chamber 2121 , the water outlet chamber 2122 and the communication channel 213 .

[0058] A water outlet channel 214 is also provided inside the valve seat 21, one end of the water outlet channel 214 is connected to an end of the water outlet chamber 2122 away from the water inlet chamber 2121, and the other end of the water outlet channel 214 is connected to the outer surface of the side wall of the valve seat 21 facing the water outlet portion 12. The axis of the water outlet channel 214 is coaxial with the axis of the water outlet portion 12.

[0059] A nozzle 4 is installed at one end of the water outlet part 12 away from the water inlet part 11, and a water outlet pipe 5 is arranged between the nozzle 4 and the water outlet channel 214 of the valve seat 21. One end of the water outlet pipe 5 is threadedly connected to the water outlet channel 214 of the valve seat 21, and one end of the water outlet pipe 5 is fixedly connected to the nozzle 4.

[0060] When it is necessary to control the solenoid valve faucet to discharge water, the electromagnetic coil 23 is energized to drive the moving iron core 25 to move toward the closed end of the mounting hole 223, so that the moving iron core 25 is separated from the step. At this time, the water inlet hole 211, the connecting channel 213, the water inlet chamber 2121 and the water outlet chamber 2122 of the water flow chamber 212, and the water outlet channel 214 are connected. The water entering from the water inlet hole 211 flows into the interior of the nozzle 4 along the connecting channel 213, the water inlet chamber 2121 and the water outlet chamber 2122 of the water flow chamber 212, the water outlet channel 214 and the water outlet pipe 5, and finally sprays out through the nozzle 4. When it is necessary to stop discharging water, the electromagnetic coil 23 is de-energized, and the moving iron core 25 is reset under the action of the compression spring 26 to fit the step, disconnecting the water inlet chamber 2121 and the water outlet chamber 2122 of the water flow chamber 212. Since the water outlet portion 12 is arranged to be inclined downward, the water originally located in the water outlet channel 214 flows out along the water outlet channel 214 .

[0061] Reference Figure 2 , Figure 4 An inspection port 113 is provided on the side of the water inlet 11, and the inspection port 113 is located between the pipe butt joint and the bottom end 111 of the water inlet 11. A cover 114 is provided at the inspection port 113 of the water inlet 11 to close the inspection port 113, and the cover 114 is fixed to the water inlet 11 by bolts. When the solenoid valve faucet needs to be replaced, the cover 114 is opened to separate the pipe butt joint 3 from the multiple butted pipes.

[0062] Reference Figure 2 , located to increase the anti-deformation ability of the water inlet part 11, the inner surface of the water inlet part 11 is located between the valve seat 21 and the bottom end of the water inlet part 11, and a plurality of convex rings 115 are arranged at intervals along the axial direction of the water inlet part 11, and the convex rings 115 are integrally formed with the water inlet part 11.

[0063] A cap 13 is provided at the top end 112 of the water inlet portion 11 to cover the top end 112 of the water inlet portion 11 . The cap 13 is fastened to the outside of the top end 112 of the water inlet portion 11 .

[0064] Embodiment 2

[0065] The embodiment of the present application discloses a solenoid valve faucet.

[0066] Reference Figure 5 , Figure 6 The difference between the second embodiment and the first embodiment is that a three-way valve 6 is installed at the end of the pipe butt joint 3 away from the valve seat 21. The three joints of the three-way valve 6, one of which is connected to the pipe butt joint 3, one joint is used to connect with the water inlet pipe, and the remaining joints are connected to the drain pipe 7.

[0067] A pressure relief hole 224 is provided on the core column 22 to connect the water inlet cavity 2121 of the water flow cavity 212 with the interior of the water inlet portion 11. When the moving iron core 25 moves to the closed end of the mounting hole 223, the moving iron core 25 closes the pressure relief hole 224. When the moving iron core 25 abuts against the step, the pressure relief hole 224 connects the water inlet cavity 2121 with the interior of the water inlet portion 11.

[0068] After the water stops flowing out, the pressure relief hole 224 connects the water inlet chamber 2121 with the interior of the water inlet part 11, and the three-way valve connects the pipe docking joint 3 with the drain pipe 7. The water inside the water inlet chamber 2121 and the connecting channel 213 flows into the drain pipe 7 and is discharged under the action of gravity, thereby discharging the water in the entire solenoid valve faucet to the outside, making it less likely for the solenoid valve faucet to freeze and become unable to be opened in a low temperature environment.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A solenoid valve faucet, characterized in that: It comprises a faucet body (1) and a solenoid valve core assembly (2); The faucet body (1) comprises a water inlet (11) with an opening at the bottom end (111) and a hollow interior, and a water outlet (12) located on the side of the water inlet (11) and in communication with the interior of the water inlet (11), wherein the water outlet (12) is arranged obliquely toward the bottom end (111) of the water inlet (11); The solenoid valve core group (2) is located inside the water inlet part (11); The solenoid valve core assembly (2) comprises a valve seat (21), an end surface of the valve seat (21) facing the bottom end (111) of the water inlet portion (11) is provided with a water inlet hole (211), an end surface of the valve seat (21) facing the top end (112) of the water inlet portion (11) is provided with a water flow cavity (212), and a connecting channel (213) is provided inside the valve seat (21) for connecting the water inlet hole (211) and the water flow cavity (212); The water flow chamber (212) comprises a water outlet chamber (2122) and a water inlet chamber (2121) which connects the water outlet chamber (2122) with an end surface of the valve seat (21) facing the top end (112) of the water inlet portion (11), and the communication channel (213) is connected with an end of the water inlet chamber (2121) facing the water outlet chamber (2122); A water outlet pipe (5) is provided inside the water outlet portion (12), and a water outlet channel (214) is also provided inside the valve seat (21); one end of the water outlet channel (214) is connected to the water outlet cavity (2122), and the other end of the water outlet channel (214) is connected to the water outlet pipe (5); the water outlet channel (214) is inclined from one end connected to the water outlet cavity (2122) to one end connected to a side wall surface of the valve seat (21) facing the water outlet portion (12), and then to the bottom end (111) of the water outlet portion (12); The solenoid valve core assembly (2) further comprises a control component for controlling the disconnection or connection between the water inlet chamber (2121) and the water outlet chamber (2122), wherein the control component seals the water inlet chamber (2121) and the opening of the valve seat (21) toward the top end (112) of the water inlet portion (11); The transverse cross-sectional area of ​​the water inlet chamber (2121) is greater than the cross-sectional area of ​​the water outlet chamber (2122), thereby forming a step between the water inlet chamber (2121) and the water outlet chamber (2122); the connecting passage (213) is connected to the water inlet chamber (2121), and the connecting position is located on the side wall of the step facing the water inlet chamber (2121); the control component comprises a core column (22) for closing the opening between the water inlet chamber (2121) and the end surface of the top end (112) of the valve seat (21) facing the water inlet portion (11); the core column (22) is provided with a mounting hole (223) connected to the water flow chamber (212), and the mounting hole (223) is provided inside the core column (22). 23) one end is open and the other end is closed, a moving iron core (25) is slidably connected inside the mounting hole (223), an elastic body is arranged between the moving iron core (25) and the closed end of the mounting hole (223), an electromagnetic coil (23) is arranged outside the core column (22), after the electromagnetic coil (23) is energized, the moving iron core (25) moves toward the closed end of the mounting hole (223), at which time the elastic body is in a compressed state, and the moving iron core (25) and the step are in a separated state; after the electromagnetic coil (23) is de-energized, the moving iron core (25) abuts against the step, thereby disconnecting the water inlet chamber (2121) and the water outlet chamber (2122); The invention also comprises a three-way valve (6), one interface of the three-way valve (6) being connected to the water inlet hole (211), one interface being connected to a drain pipe (7), and the remaining interface being used to be connected to a water source; the core column (22) being provided with a pressure relief hole (224) for connecting the water flow cavity (212) with the inner cavity of the water inlet portion (11); when the moving iron core (25) disconnects the water inlet cavity (2121) and the water outlet cavity (2122), the pressure relief hole (224) connects the water flow cavity (212) with the inner cavity of the water inlet portion (11); when the moving iron core (25) connects the water inlet cavity (2121) and the water outlet cavity (2122), the moving iron core (25) closes the pressure relief hole (224).

2. The solenoid valve faucet according to claim 1, characterized in that: An accommodating hole (251) is provided on one end surface of the moving iron core (25) facing the mounting hole (223), and the elastic body is located in the accommodating hole (251). When the moving iron core (25) abuts against the closed end of the mounting hole (223), the elastic body is in a compressed state.

3. The solenoid valve faucet according to claim 2, characterized in that: The moving iron core (25) is provided with a pressure relief hole (252) for connecting the accommodating hole (251) with the water flow chamber (212).

4. The solenoid valve faucet according to claim 1, characterized in that: The core column (22) comprises a main column (221) and a sealing portion (222) located at one end of the main column (221) facing the valve seat (21); the sealing portion (222) closes the opening of the water inlet chamber (2121); the transverse cross-sectional area of ​​the sealing portion (222) is greater than the transverse cross-sectional area of ​​the main column (221); the electromagnetic coil (23) is located outside the main column (221) and abuts against the sealing portion (222); a retaining ring (24) is provided at one end of the main column (221) away from the sealing portion (222); the retaining ring (24) and the sealing portion (222) clamp and fix the electromagnetic coil (23).

5. The solenoid valve faucet according to claim 1, characterized in that: A pipe butt joint (3) is installed at the water inlet hole (211).

6. The solenoid valve faucet according to claim 1, characterized in that: The top end (112) of the water inlet portion (11) is in an open shape, and the top end (112) of the water inlet portion (11) is provided with a cap (13) for closing the opening of the top end (112) of the water inlet portion (11).

7. The solenoid valve faucet according to claim 1, characterized in that: A distance is left between the water inlet hole (211) and the bottom end (111) of the water inlet portion (11); an inspection port (113) is provided on the side wall of the water inlet portion (11); the inspection port (113) is located between the valve seat (21) and the bottom end (111) of the water inlet portion (11); a cover (114) for closing the inspection port (113) is provided on the water inlet portion (11); the cover (114) is detachably connected to the water inlet portion (11).

8. The solenoid valve faucet according to claim 1, characterized in that: A plurality of convex rings (115) arranged along the axial direction of the water inlet portion (11) are arranged inside the water inlet portion (11).

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