Mode-switchable delay function valve element and delay faucet

Abstract

The mode-switchable delay function valve element comprises a conventional valve element body, a water inlet and a water outlet are formed in the bottom of the conventional valve element body, and the conventional valve element body comprises a valve block set and a valve handle; the valve element is characterized by further comprising a valve seat, the conventional valve element body is installed in a valve element cavity of the valve seat, and a water inlet channel and a water outlet channel are formed in the valve seat; the mounting seat is fixed at the bottom of the valve seat, and a water inlet runner, a water outlet runner and a mounting cavity are arranged in the mounting seat; the time delay module is arranged in the mounting cavity and comprises a shell, a first magnet, a second magnet, a push rod and a spring; a water passing cavity, a piston cavity and a guide cavity are formed in the shell, and the upper end of the push rod is upwards exposed out of the valve seat. Switching of the mode (the delayed water outlet mode or the conventional water outlet mode) can be achieved by pressing the push rod. The invention further relates to a time-delay faucet adopting the valve element.

Description

Technical Field

[0001] This invention relates to a time-delay valve core for controlling water flow, and more particularly to a time-delay function valve core with switchable modes. This invention also relates to an extended faucet using the aforementioned time-delay function valve core. Background Technology

[0002] The time-delay valve core is a type of on / off valve core that features a time-delay self-closing characteristic, effectively saving water. It is widely used in public places such as public restrooms, hotels, or train station faucets. Most mechanical time-delay self-closing faucets currently in use employ water or gas as the damping medium. They utilize a fixed groove or small hole to form a channel communicating with the time-delay storage chamber. By axially moving the valve stem, which in turn drives the piston to move axially, the fluid in the time-delay storage chamber is quickly discharged. When the pressure applied to the valve stem disappears, under the action of the spring and the water drawn into the time-delay storage chamber through the channel, the valve stem slowly moves axially and resets to close the valve.

[0003] For example, Chinese utility model patent ZL201922044045.X (authorization announcement number CN211288855U) discloses a multifunctional time-delay valve core, comprising a housing and a base; the housing is provided with a switch delay component and an adjustment component; the adjustment component includes a static water valve plate and a dynamic water valve plate; the switch delay component and the adjustment component are connected by a locking mechanism to drive the dynamic water valve plate to rotate relative to the static water valve plate, thereby controlling the water flow ratio of the first water passage hole to the second water passage hole and the third water passage hole; the static water valve plate is installed on a fixed base, and the housing and the fixed base are locked together relatively stationary; the switch delay component comprises a valve body, a moving part, a piston, a deformable seal, a spring, and a hydraulic solution; the piston is fixed on the moving part, and the deformable seal is fixed in the piston groove. Another example is Chinese utility model patent ZL202122637589.4 (authorization announcement number CN217634094U), which discloses a similar push-button type time-delay valve core.

[0004] Existing time-delay valve cores have a single function, and faucets using this type of valve core can only be used as time-delay faucets. However, in actual use, it is sometimes more convenient to use them as regular valve cores. This makes the washbasins with time-delay faucets unsuitable, requiring the time-delay faucets to be replaced with regular faucets, which is inconvenient and costly. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a time-delay function valve core with a novel structure that can switch between conventional valve core functions and extended valve core functions, in view of the above-mentioned existing technology.

[0006] The technical solution adopted by the present invention to solve the first technical problem mentioned above is as follows: a mode-switchable delay function valve core, comprising a conventional valve core body with an inlet and an outlet at the bottom, the conventional valve core body including a valve plate assembly for adjusting the flow rate of the outlet and a valve handle for controlling the valve plate assembly; characterized in that: it further includes

[0007] The valve seat has a conventional valve core body installed in the valve core cavity of the valve seat. The valve seat has an inlet channel and an outlet channel that penetrate the bottom of the valve seat. The upper end of the inlet channel is connected to the inlet, one end of the outlet channel is connected to the outlet, and the other end of the outlet channel penetrates the side wall of the valve seat.

[0008] The mounting base is fixed to the bottom of the valve seat. The mounting base is provided with an inlet channel, an outlet channel and a mounting cavity. The upper end of the inlet channel is connected to the inlet channel, and the side of the inlet channel is connected to the bottom of the mounting cavity through a bypass channel. The upper end of the outlet channel is connected to the outlet channel, and the lower end of the outlet channel is connected to the side of the mounting cavity.

[0009] The delay module, housed in the mounting cavity, includes a housing, a first magnet, a second magnet, a push rod, and a spring. The housing contains a water passage chamber, a piston chamber, and a guide chamber. The water passage chamber communicates with the water outlet channel, and the piston chamber and water passage chamber are connected via a valve port. The piston chamber is also connected to a bypass channel. A piston rod is located within the piston chamber. The lower end of the piston rod has a first sealing element for sealing the valve port. A second sealing element is fitted onto the piston rod, dividing the piston chamber into an upper pressure chamber and a lower pressure chamber. The piston rod has a pressure relief hole connecting the upper pressure chamber and the water passage chamber, and a connection to the upper... The pressure chamber and the lower pressure chamber have water injection holes; the push rod is constrained in the mounting cavity and can move up and down, with the upper end of the push rod protruding above the valve seat; the first magnet is installed in the guide cavity and can move up and down, with a third sealing element at the lower end of the first magnet to seal the pressure relief hole; the second magnet is sleeved outside the guide cavity and can move up and down; a spring is located below the second magnet and moves the second magnet upward to abut the push rod; when the second magnet is in the upward position, the second magnet forms a downward repulsive force on the first magnet; when the second magnet moves down with the push rod to the downward position, the second magnet forms an upward repulsive force on the first magnet.

[0010] To facilitate the installation of the extension module into the mounting base and to facilitate the machining of the inlet and outlet water channels and the mounting cavity, the mounting base is preferably composed of an upper body and a lower body that are snapped together. The top of the push rod has an upwardly extending guide shaft and a trigger shaft. The guide shaft is mounted on the upper body through a first bushing, and the trigger shaft is mounted on the upper body through a second bushing. Alternatively, the upper and lower bodies can be threaded together.

[0011] To prevent scale or debris from clogging the water inlet, the third seal has a downwardly extending, insertable needle portion into the water inlet, the cross-sectional area of ​​which is smaller than that of the water inlet. As the first magnet moves downward, the third seal causes the needle portion to move within the water inlet to remove impurities.

[0012] To facilitate the installation of components such as the first magnet and piston rod into the housing, and to facilitate the forming of the water passage cavity, piston cavity and guide cavity, as an improvement, the housing is composed of an upper housing and a lower housing connected by threads. The water passage cavity and piston cavity are located in the lower housing, the guide cavity is located in the upper housing, and the second magnet and spring are sleeved on the outside of the upper housing.

[0013] In a further improvement, the top of the upper housing has an upwardly protruding guide shaft portion, with a guide cavity located within the guide shaft portion. The second magnet and spring are sleeved outside the guide shaft portion, and the bottom of the push rod has a recessed clearance cavity for the guide shaft portion to extend into. The guide shaft portion provides a secure mounting position for the second magnet and spring, and the clearance cavity allows for a more compact installation of the push rod within the mounting cavity.

[0014] As a specific structure of the lower housing, the aforementioned lower housing has an axial through hole, and a radial connecting portion is located at the lower part of the axial through hole. A water passage gap is formed between the two sides of the connecting portion and the peripheral wall of the axial through hole. A recessed cavity is provided on the connecting portion, forming the water passage cavity. The opening end of the recessed cavity forms the valve port. A radially penetrating hole is provided on the connecting portion, connecting the recessed cavity and the water outlet channel. The aforementioned structure facilitates injection molding.

[0015] As a preferred embodiment of a conventional valve core body, the aforementioned conventional valve core body has two water inlets: a cold water inlet and a hot water inlet; two water inlet channels on the valve seat: a cold water inlet channel and a hot water inlet channel; and two water inlet flow channels on the mounting base: a cold water inlet flow channel and a hot water inlet flow channel. The upper end of the cold water inlet channel is connected to the cold water inlet, and the upper end of the hot water inlet is connected to the hot water inlet. The upper end of the cold water inlet flow channel is connected to the cold water inlet channel, and the upper end of the hot water inlet flow channel is connected to the hot water inlet channel. The cold water inlet flow channel is connected to the water passage chamber via a bypass flow channel, while the hot water inlet flow channel is blocked from the water passage chamber. This conventional valve core body can not only control whether water flows out but also regulate the water temperature.

[0016] Of course, you can also choose a conventional valve core body with a simpler structure that only adjusts the water volume. This conventional valve core body has only one water inlet, and correspondingly, there is only one water inlet channel on the valve seat and one water inlet flow channel on the mounting base. The swing of the valve handle only controls the opening and closing of the water circuit.

[0017] As a conventional valve core body structure that also functions as a mixing valve (temperature regulator), it includes

[0018] The valve housing has the cold water inlet and the hot water inlet located at the bottom.

[0019] The fixed valve plate is fixed at the bottom inside the valve housing;

[0020] The movable valve plate is located on top of the fixed valve plate;

[0021] The rotor, installed inside the valve housing, can rotate around its own axis;

[0022] A dial is installed at the bottom of the rotor. The dial can rotate with the rotor and slide relative to the rotor. A movable valve plate is installed below the dial and can rotate or slide with the dial. The rotation of the movable valve plate is used to adjust the mixing ratio of cold water and hot water, and the sliding of the movable valve plate is used to control whether water is coming out of the outlet. In the initial state, the flow rate of the outlet is zero. The valve handle passes through and is pivotally hinged in the through hole of the rotor. The lower end of the valve handle is inserted into the dial so that the swing of the valve handle can drive the sliding of the dial.

[0023] The above conventional valve core body is basically similar to the existing mixing valve core structure. For specific structural details, please refer to existing technologies.

[0024] In a further improvement, the side wall of the aforementioned dial is provided with a laterally protruding limiting part, and the side wall of the valve housing has a limiting hole for the limiting part to be inserted. In the initial state, the limiting part is inserted into the limiting hole to prevent the dial from rotating. This ensures that the valve handle cannot swing in the initial position, and the delayed water dispensing function can only be achieved by pressing the push rod in this position.

[0025] Compared with existing technologies, the advantage of this switchable delay function valve core is that it can switch between conventional valve core functions and extended valve core functions.

[0026] When a delayed water discharge mode is required, the valve assembly is in its initial position, and no water flows out of the outlet. Pressing the push rod causes the second magnet to move downwards. The second magnet exerts an upward repulsive force on the first magnet, opening the pressure relief hole at the lower end of the first magnet. Water from the upper pressure chamber flows through the pressure relief hole into the water passage chamber. The water pressure in the upper pressure chamber is lower than that in the lower pressure chamber, causing the piston rod to move upwards. The first seal opens the valve port, and water flows out from the side wall of the valve seat after passing through the inlet channel, bypass channel, valve port, water passage chamber, outlet channel, and outlet passage. Simultaneously, the second magnet moves upwards under the action of the spring, exerting a downward repulsive force on the first magnet. Combined with the upward movement of the piston rod, the third seal... When the pressure relief hole is closed, water flows out of the valve port and also flows into the upper pressure chamber through the water injection hole. As time goes by, the pressure in the upper pressure chamber gradually increases. The effective working area of ​​the piston rod in the upper pressure chamber is greater than that in the lower pressure chamber. Under the same water pressure, the piston rod moves downward under the water pressure in the upper pressure chamber. The second magnet forms a downward repulsive force on the first magnet, so that the third seal at the lower end of the first magnet always tends to block the pressure relief hole until the water through the water injection hole fills the upper pressure chamber. The piston rod then re-seals the valve port, and the water no longer flows out from the side wall of the valve seat. The extension time depends on the diameter of the water injection hole, that is, the time required to fill the upper pressure chamber.

[0027] When the normal water flow mode is required, do not press the push rod. Simply operate the valve core body normally, just like a regular faucet.

[0028] The second technical problem to be solved by the present invention is to provide a time-delay faucet with a completely new structure that can switch between conventional valve core functions and extended valve core functions, in view of the above-mentioned existing technology.

[0029] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: an extended faucet, including a faucet shell and a handle, characterized in that: a delay function valve core with switchable mode is installed inside the faucet shell, the handle is connected to the upper end of the valve handle, and the bottom of the handle has a pressure rib that cooperates with the push rod, and only in the initial position, the pressure rib is aligned with the push rod exposed on the valve seat.

[0030] Compared to existing technologies, the advantages of this faucet are as follows: When the handle is pressed down in the initial position (also known as the 0-degree position), the pressure rib at the bottom of the handle triggers the push rod to move downward, thus achieving delayed water dispensing. The push rod, under the action of the spring, can drive the handle to return to its original position. When the handle is swung left or right, the pressure rib and the push rod are misaligned, and even if the handle is pressed down, the push rod cannot be triggered to move downward. For regular use, simply swing the handle upward to operate the faucet and dispensing water normally. Attached Figure Description

[0031] Figure 1A three-dimensional structural diagram of an embodiment of a time-delay function valve core. Figure 1 (Initial state);

[0032] Figure 2 A three-dimensional structural diagram of an embodiment of a time-delay function valve core. Figure 2 (Initial state);

[0033] Figure 3 A cross-sectional view (initial state) of an embodiment of a time-delay function valve core;

[0034] Figure 4 for Figure 3 Sectional view along axis AA;

[0035] Figure 5 for Figure 3 BB-direction sectional view;

[0036] Figure 6 A cross-sectional view (initial state) along the outlet flow direction of an embodiment of the time-delay function valve core;

[0037] Figure 7 A cross-sectional view along the outlet flow path (delayed water outlet state) of an embodiment of the time-delay function valve core;

[0038] Figure 8 An exploded perspective view of the time delay module in an embodiment of the time delay function valve core;

[0039] Figure 9 Valve seat in the embodiment of the time-delay function valve core;

[0040] Figure 10 A three-dimensional schematic diagram of the lower housing in an embodiment of the time-delay function valve core;

[0041] Figure 11 A three-dimensional schematic diagram of an embodiment of a time-delay faucet;

[0042] Figure 12 This is a cross-sectional view of an embodiment of a time-delay faucet. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] like Figures 1-10 The figure shows a preferred embodiment of a mode-switchable delay function valve core.

[0045] A mode-switchable delay function valve core, including

[0046] The conventional valve core body 1 has an inlet and an outlet 1c at the bottom. There are two inlets, namely a cold water inlet 1a and a hot water inlet 1b. The conventional valve core body 1 includes a valve plate assembly for adjusting the flow rate of the outlet 1c and a valve handle 16 for controlling the valve plate assembly.

[0047] Valve seat 2, the conventional valve core body 1 is installed in the valve core cavity 2d of valve seat 2. Valve seat 2 is provided with an inlet channel and an outlet channel 2c that penetrate the bottom of valve seat 2. There are two inlet channels, namely a cold water inlet channel 2a and a hot water inlet channel 2b. The upper end of the cold water inlet channel 2a is connected to the cold water inlet 1a, the upper end of the hot water inlet 1b is connected to the hot water inlet 1b, one end of the outlet channel 2c is connected to the outlet 1c, and the other end of the outlet channel 2c penetrates the side wall of valve seat 2.

[0048] Mounting base 3 is fixed to the bottom of valve seat 2. Mounting base 3 is provided with inlet channel, outlet channel 3c and mounting cavity 3d. There are two inlet channels, namely cold water inlet channel 3a and hot water inlet channel 3b. The upper end of cold water inlet channel 3a is connected to cold water inlet channel 2a, and the upper end of hot water inlet channel 3b is connected to hot water inlet channel 2b. Cold water inlet channel 3a is connected to the bottom of mounting cavity 3d through bypass channel 3e. Hot water inlet channel 3b is blocked from water passage cavity 5a. The upper end of outlet channel 3c is connected to outlet channel 2c, and the lower end of outlet channel 3c is connected to the side of mounting cavity 3d.

[0049] Delay module, such as Figure 8As shown, the delay module, located in the mounting cavity 3d, includes a housing 5, a first magnet 6a, a second magnet 6b, a push rod 7, and a spring 4. The housing 5 contains a water passage cavity 5a, a piston cavity 5b, and a guide cavity 5c. The water passage cavity 5a is connected to the water outlet channel 3c. The piston cavity 5b and the water passage cavity 5a are connected via a valve port 5d. The piston cavity 5b is connected to the cold water inlet channel 3a via a bypass channel 3e. A piston rod 8 is located within the piston cavity 5b. The lower end of the piston rod 8 has a first sealing element 8a for sealing the valve port 5d. A second sealing element 8b is fitted onto the piston rod 8, dividing the piston cavity 5b into an upper pressure cavity 5b1 and a lower pressure cavity 5b2. The piston rod 8 has a pressure relief hole 81 connecting the upper pressure cavity 5b1 and the water outlet channel 3c, and a hole connecting the upper pressure cavity 5b2 to the lower pressure cavity 5b2. Water injection holes 82 in pressure chambers 5b1 and 5b2; push rod 7 is constrained within mounting cavity 3d and can move up and down, with the upper end of push rod 7 protruding above valve seat 2; first magnet 6a is installed in guide cavity 5c and can move up and down, first magnet 6a is cylindrical, and the lower end of first magnet 6a is provided with a third sealing element 8c for sealing pressure relief hole 81; second magnet 6b is annular and sleeved outside guide cavity 5c and can move up and down, second magnet 6b is annular, spring 4 is located below second magnet 6b and moves second magnet 6b upward to abut push rod 7; second magnet 6b is in the upward position, second magnet 6b forms a downward repulsive force on first magnet 6a; second magnet 6b moves down with push rod 7 to the downward position, second magnet 6b forms an upward repulsive force on first magnet 6a.

[0050] The mounting base 3 consists of an upper body 31 and a lower body 32 that are fastened together. The top of the push rod 7 has an upwardly extending guide shaft 71 and a trigger shaft 72. The guide shaft 71 is mounted on the upper body 31 through a first bushing 7a, and the trigger shaft 72 is mounted on the upper body 31 through a second bushing 7b.

[0051] like Figure 4 As shown, the third seal 8c has a dredging needle 8c1 that extends downward and is inserted into the water injection hole 82, and the cross-sectional area of ​​the dredging needle 8c1 is smaller than the cross-sectional area of ​​the water injection hole 82.

[0052] The outer casing 5 consists of an upper casing 51 and a lower casing 52 connected by threads. A water passage chamber 5a and a piston chamber 5b are located in the lower casing 52, and a guide chamber 5c is located in the upper casing 51. The second magnet 6b and the spring 4 are sleeved on the outside of the upper casing 51. The top of the upper casing 51 has an upwardly protruding guide shaft portion 511, and the guide chamber 5c is located inside the guide shaft portion 511. The second magnet 6b and the spring 4 are sleeved on the outside of the guide shaft portion 511. The bottom of the push rod 7 has a recessed relief cavity 73 for the guide shaft portion 511 to extend into.

[0053] like Figure 10As shown, the lower housing 52 has an axial through hole 521. The lower part of the axial through hole 521 has a radial connecting part 522. The two sides of the connecting part 522 and the peripheral wall of the axial through hole 521 form a water passage distance D. The connecting part 522 is provided with a recessed cavity, which forms the water passage cavity 5a. The opening end of the cavity forms the valve port 5d. The connecting part 522 is provided with a radially penetrating hole 523, which connects the cavity and the water outlet channel 3c.

[0054] The conventional valve core body 1 in this embodiment includes

[0055] Valve housing 11, wherein the cold water inlet 1a and the hot water inlet 1b are located at the bottom of the valve housing 1;

[0056] Fixed valve plate 12 is fixed at the bottom inside the valve housing 1;

[0057] The movable valve plate 13 is located on top of the fixed valve plate 3;

[0058] Rotor 14, installed inside valve housing 1, can rotate around its own axis;

[0059] A dial 15 is installed at the bottom of the rotor 2. The dial 9 can rotate with the rotor 2 and slide relative to the rotor 2. A movable valve plate 5 is installed below the dial 9 and can rotate or slide with the dial 9. The rotation of the movable valve plate 5 is used to adjust the mixing ratio of cold water and hot water. The sliding of the movable valve plate 5 is used to control whether water is discharged from the outlet 1c. In the initial state, the flow rate of the outlet 1c is zero. The valve handle 16 passes through and is hinged to the through hole of the rotor 2 through the pivot 8a. The lower end of the valve handle 8 is inserted into the dial 9 so that the swing of the valve handle 8 can drive the sliding of the dial 9.

[0060] The side wall of the dial 9 is provided with a side-protruding limiting part 91, and the side wall of the valve housing 11 is provided with a limiting hole 111 for the limiting part 91 to be inserted. In the initial state, the limiting part 91 is inserted into the limiting hole 111 to prevent the dial 9 from rotating.

[0061] This valve core can switch between conventional valve core functions and extended valve core functions.

[0062] When a delayed water discharge mode is required, the valve assembly is in its initial position, such as... Figures 1-6 As shown, no water flows out of outlet 1c. Pressing the push rod 7 causes the second magnet 6b to move downwards. The second magnet 6b exerts an upward repulsive force on the first magnet 6a. The third seal 8c at the lower end of the first magnet 6a opens the pressure relief hole 81. Water in the upper pressure chamber 5b1 flows through the pressure relief hole 81 to the water passage chamber 5a. The water pressure in the upper pressure chamber 5b1 is less than the water pressure in the lower pressure chamber 5b2. The water pressure pushes the piston rod 8 upwards. Figure 7As shown, the first seal 8a opens the valve port 5d, and water flows out from the side wall of the valve seat 2 after passing through the cold water inlet channel 3a, bypass channel 3e, valve port 5d, water passage 5a, water outlet channel 3c, and water outlet channel 2c. At the same time, the second magnet 6b moves upward under the action of the spring 4, and the second magnet 6b forms a downward repulsive force on the first magnet 6a (the principle of magnetic pole repulsion). Combined with the upward movement of the piston rod 8, the third seal 8c closes the pressure relief hole 81 again. While the water flows out from the valve port 5d, it also flows into the upper pressure chamber 5b1 through the water injection hole 82. As time goes by, the pressure in the upper pressure chamber 5b1 gradually increases, and the piston rod 8 is located in the upper pressure chamber. The effective working area of ​​5b1 is greater than the effective working area of ​​piston rod 8 in the lower pressure chamber 5b2. Under the same water pressure, piston rod 8 moves downward under the water pressure of upper pressure chamber 5b1. Because the second magnet 6b forms a downward repulsive force on the first magnet 6a, the third seal 8c at the lower end of the first magnet 6a always tends to block the pressure relief hole 81 until the water through the water injection hole 82 fills the upper pressure chamber 5b1. Then, the piston rod 8d and the third seal 8c re-seal the valve port 5d, and the water no longer flows out from the side wall of the valve seat 2. The extension time depends on the diameter of the water injection hole 82, that is, the time required to fill the upper pressure chamber 5b1.

[0063] When the normal water flow mode is required, do not press the push rod 7. Simply operate the normal valve core body 1 as in a normal faucet.

[0064] like Figure 11 , 12 The image shows an example of a time-delay faucet.

[0065] An extended faucet includes a faucet housing 10 and a handle 101. The faucet housing 10 is equipped with a mode-switchable delay function valve core as described in the aforementioned embodiment. The handle 101 is connected to the upper end of the valve handle 16. The bottom of the handle 101 has a pressure rib 102 that cooperates with the push rod 7. Only in the initial position, the pressure rib 102 is aligned with the push rod 7 exposed on the valve seat 2.

[0066] When the handle 101 is pressed down in the initial position (also known as the 0-degree position), the handle 101 can be designed as a two-section design. This prevents the handle 101 from causing the valve handle to swing. The pressure rib 102 at the bottom of the handle 101 triggers the push rod 7 to move downward, thus achieving delayed water dispensing. The push rod 7, under the action of the spring 4, can drive the handle 101 to return to its original position. When the handle 101 swings left and right (to adjust the water temperature), the pressure rib 102 and the push rod 7 are misaligned, so even if the handle 101 is pressed down, it cannot trigger the push rod 7 to move downward. For normal faucet use, simply swing the handle 101 upward to operate the water dispensing function normally. In fact, other components can also be used to trigger the push rod.

[0067] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A mode-switchable delay function valve core, comprising: A conventional valve core body (1) with an inlet and an outlet (1c) at the bottom, the conventional valve core body (1) includes a valve plate assembly for adjusting the flow rate of the outlet (1c) and a valve handle (16) for controlling the valve plate assembly. Its features are: Also includes Valve seat (2), the conventional valve core body (1) is installed in the valve core cavity (2d) of the valve seat (2), the valve seat (2) is provided with an inlet channel and an outlet channel (2c) that penetrate the bottom of the valve seat (2), the upper end of the inlet channel is connected to the inlet, one end of the outlet channel (2c) is connected to the outlet (1c), and the other end of the outlet channel (2c) penetrates the side wall of the valve seat (2); Mounting base (3) is fixed to the bottom of valve seat (2). The mounting base (3) is provided with an inlet channel, an outlet channel (3c) and a mounting cavity (3d). The upper end of the inlet channel is connected to the inlet channel. The side of the inlet channel is connected to the bottom of the mounting cavity (3d) through a bypass channel (3e). The upper end of the outlet channel (3c) is connected to the outlet channel (2c). The lower end of the outlet channel (3c) is connected to the side of the mounting cavity (3d). A delay module is disposed in the mounting cavity (3d). The delay module includes a housing (5), a first magnet (6a), a second magnet (6b), a push rod (7), and a spring (4). The housing (5) has a water passage cavity (5a), a piston cavity (5b), and a guide cavity (5c). The water passage cavity (5a) is connected to the water outlet channel (3c). The piston cavity (5b) and the water passage cavity (5a) are connected through a valve port (5d). 5b) is connected to the bypass channel (3e); the piston chamber (5b) is provided with a piston rod (8), the lower end of the piston rod (8) is provided with a first sealing element (8a) for sealing the valve port (5d), the piston rod (8) is fitted with a second sealing element (8b), the second sealing element (8b) divides the piston chamber (5b) into an upper pressure chamber (5b1) and a lower pressure chamber (5b2), and the piston rod (8) has an opening that connects the upper pressure chamber (5b1) and the water passage chamber (5d). a) a pressure relief hole (81) and a water injection hole (82) connecting the upper pressure chamber (5b1) and the lower pressure chamber (5b2); the push rod (7) is constrained in the mounting cavity (3d) and can move up and down. The upper end of the push rod (7) protrudes upward outside the valve seat (2). The first magnet (6a) is installed in the guide cavity (5c) and can move up and down. The lower end of the first magnet (6a) is provided with a third sealing element (8c) for sealing the pressure relief hole (81). The second magnet (6b) is sleeved outside the guide cavity (5c) and can move up and down. The spring (4) is located below the second magnet (6b) and moves the second magnet (6b) upward to abut the push rod (7). The second magnet (6b) is in the upward position. The second magnet (6b) forms a downward repulsive force on the first magnet (6a). The second magnet (6b) moves down with the push rod (7) to the downward position. The second magnet (6b) forms an upward repulsive force on the first magnet (6a).

2. The mode-switchable delay function valve core according to claim 1, characterized in that: The mounting base (3) consists of an upper body (31) and a lower body (32) that are fastened together. The top of the push rod (7) has an upwardly extending guide shaft (71) and a trigger shaft (72). The guide shaft (71) is mounted on the upper body (31) through a first bushing (7a), and the trigger shaft (72) is mounted on the upper body (31) through a second bushing (7b).

3. The mode-switchable delay function valve core according to claim 1, characterized in that: The third seal (8c) has a dredging needle (8c1) that extends downward into the water injection hole (82), the cross-sectional area of ​​which is smaller than that of the water injection hole (82).

4. The mode-switchable delay function valve core according to claim 1, characterized in that: The outer shell (5) is composed of an upper shell (51) and a lower shell (52) that are threaded together. The water passage cavity (5a) and the piston cavity (5b) are located in the lower shell (52), the guide cavity (5c) is located in the upper shell (51), and the second magnet (6b) and the spring (4) are sleeved on the outside of the upper shell (51).

5. The mode-switchable delay function valve core according to claim 4, characterized in that: The top of the upper housing (51) has an upwardly protruding guide shaft portion (511), the guide cavity (5c) is provided inside the guide shaft portion (511), the second magnet (6b) and the spring (4) are sleeved outside the guide shaft portion (511), and the bottom of the push rod (7) is provided with a recessed relief cavity (73) for the guide shaft portion (511) to extend into.

6. The mode-switchable delay function valve core according to claim 4, characterized in that: The lower housing (52) has an axial through hole (521), and the lower part of the axial through hole (521) has a radial connecting part (522). The two sides of the connecting part (522) and the peripheral wall of the axial through hole (521) form a water passage gap (D). The connecting part (522) is provided with a recessed cavity, which forms the water passage cavity (5a). The opening end of the cavity forms the valve port (5d). The connecting part (522) is provided with a radial through hole (523), which connects the cavity and the water outlet channel (3c).

7. The time-delay function valve core with switchable mode according to any one of claims 1 to 6, characterized in that: The conventional valve core body (1) has two inlets, namely a cold water inlet (1a) and a hot water inlet (1b); the valve seat (2) has two inlet channels, namely a cold water inlet channel (2a) and a hot water inlet channel (2b); the mounting base (3) has two inlet channels, namely a cold water inlet channel (3a) and a hot water inlet channel (3b); wherein, the upper end of the cold water inlet channel (2a) is connected to the cold water inlet... The water inlet (1a) is connected, the upper end of the hot water inlet (1b) is connected to the hot water inlet (1b), the upper end of the cold water inlet channel (3a) is connected to the cold water inlet channel (2a), the upper end of the hot water inlet channel (3b) is connected to the hot water inlet channel (2b), the cold water inlet channel (3a) is connected to the water passage cavity (5a) through the bypass channel (3e), and the hot water inlet channel (3b) is blocked from the water passage cavity (5a).

8. The mode-switchable delay function valve core according to claim 7, characterized in that: The conventional valve core body (1) includes The valve housing (11) has the cold water inlet (1a) and hot water inlet (1b) located at the bottom of the valve housing (1); Fixed valve plate (12) is fixed at the bottom inside the valve body (1); The movable valve plate (13) is located on top of the fixed valve plate (3); The rotor (14) is installed inside the valve housing (1) and can rotate around its own axis; A dial (15) is installed at the bottom of the rotor (2). The dial (9) can rotate with the rotor (2) and slide relative to the rotor (2). The movable valve plate (5) is installed below the dial (9) and can rotate or slide with the dial (9). The rotation of the movable valve plate (5) is used to adjust the mixing ratio of cold water and hot water. The sliding of the movable valve plate (5) is used to control whether the outlet (1c) outputs water. In the initial state, the flow rate of the outlet (1c) is zero. The valve handle (16) passes through and is hinged to the through hole of the rotor (2) through a pivot (8a). The lower end of the valve handle (8) is inserted on the dial (9) so that the swing of the valve handle (8) can drive the sliding of the dial (9).

9. The mode-switchable delay function valve core according to claim 8, characterized in that: The side wall of the dial (91) is provided with a lateral protruding limiting part (151), and the side wall of the valve housing (11) is provided with a limiting hole (111) for the limiting part (151) to be inserted. In the initial state, the limiting part (91) is inserted into the limiting hole (111) to prevent the dial (9) from rotating.

10. An extended faucet, comprising a faucet housing (10) and a handle (101), characterized in that: The faucet housing (10) is equipped with a mode-switching delay function valve core as described in any of claims 1 to 9. The handle (101) is connected to the upper end of the valve handle (16). The bottom of the handle (101) has a pressure rib (102) that cooperates with the push rod (7). Only in the initial position, the pressure rib (102) is aligned with the push rod (7) that is exposed on the valve seat (2).

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