Time-delay valve core capable of adjusting temperature by rotating according to time delay

Abstract

A delay valve element capable of adjusting temperature through pressing delay rotation comprises a base, a lower element shell, an upper element shell, a connecting base, a guide sleeve, a spring, a rotary knob, a fixed valve element, a movable valve element, a driving device and a delay valve, the fixed valve element is arranged on the base, and a cold water hole and a hot water hole correspond to a cold water inlet hole and a hot water inlet hole respectively; the driving device and the time delay valve are arranged in the upper core shell and the lower core shell respectively, the driving device is matched with the rotating hole, the knob, the driving device and the time delay valve are connected, the knob, the driving device, the time delay valve and the movable valve element rotate together to adjust the water temperature, and the driving device drives the time delay valve when the knob is pressed; the upper core shell is inserted into the counter bore, the guide sleeve is screwed with the external thread part, the spring is arranged at the top of the upper core shell, the driving device is inserted into the spring, the other end of the spring extends into the knob and is matched with the end plate, and the knob is connected with the driving device and is in sliding fit with the guide sleeve. The driving device is quickly separated from the time-delay valve, so that the water outlet speed is high, and no blocking exists.

Description

Technical Field

[0001] This utility model relates to a time delay valve core. Background Technology

[0002] The existing technology, Chinese patent 202320148136.1, describes a time-delay valve core with temperature control function and a time-delay faucet. It includes a main body comprising a shell and a valve core flange. The shell is internally connected, and its bottom opening has cold and hot water inlets and an adjustment structure for adjusting the size of the cold and hot water inlets. The radial end of the shell has at least one water outlet. A push-button valve rod consists of a straight section and a tapered portion from top to bottom. The straight section is inserted upwards into the mounting channel of the valve core flange, and extends upwards to form a spring seat. The tapered portion is located inside a time-delay cup sleeve, and a spring is located inside the spring seat. A Y-ring is fitted below the tapered portion of the push-button valve rod, with the top of the Y-ring expanding outwards and abutting against the inner wall of the time-delay cup sleeve. When the push-button valve rod moves upwards, a negative pressure is formed between the Y-ring and the time-delay cup sleeve. Under the action of the intermediate leakage hole and the spring force, the negative pressure is slowly relieved, and the rod moves upwards. The problem is that the drive and time-delay functions cannot be separated. Utility Model Content

[0003] The purpose of this invention is to provide a time-delay valve core for press-delay rotary temperature control, which features rapid separation of the drive and the time-delay valve, and rapid reset of the drive.

[0004] This utility model is implemented as follows: a time-delay valve core for press-delay rotary temperature control, characterized in that it includes a base, a lower core shell, an upper core shell, a connecting seat, a guide sleeve, a spring, a knob, a fixed valve core, a moving valve core, a drive device, and a time-delay valve.

[0005] The base is equipped with cold water holes and hot water holes;

[0006] The upper core shell includes a rotating hole on the top plate and radial water outlet holes;

[0007] The connector is hollow and has an upper opening, including a countersunk hole and an external thread.

[0008] The fixed valve core is equipped with a cold water inlet and a hot water inlet; the movable valve core is equipped with a mixing groove; the knob is hollow with one end open;

[0009] The fixed valve core is located on the base, with the cold water hole and hot water hole corresponding to the cold water inlet hole and hot water inlet hole, respectively. The drive device and the delay valve are located in the upper and lower core shells, respectively. The drive device cooperates with the rotating hole. The knob, drive device, and delay valve are connected. The knob, drive device, delay valve, and moving valve core rotate together to adjust the water temperature. Pressing the knob and drive device drives the delay valve. The upper core shell is inserted into the countersunk hole, and the guide sleeve is screwed into the external thread. The spring is located at the top of the upper core shell, and the drive device is inserted into the spring. The other end of the spring extends into the knob and cooperates with the end plate. The knob is connected to the drive device and slides with the guide sleeve.

[0010] The special feature of the press-delay rotary temperature-regulating delay valve core is that the knob includes a cylindrical seat and a countersunk hole, and the cylindrical seat is provided with a spline toothed hole.

[0011] The drive unit includes a drive housing, a transmission rod, a sealing gasket, screws, a sealing ring, and a water guide seat.

[0012] The drive housing includes an irregularly shaped drive guide cavity at the upper end, a guide hole, a shell annular protrusion on the outer surface, a sealing cavity, an internal thread cavity, and a water guide cavity, with radial water guide holes provided on the water guide cavity.

[0013] The transmission rod includes a splined head, a non-circular guide drive rod section, a smooth rod section, a head, and an internal threaded hole at the end;

[0014] The water guide seat is hollow and has an upper opening, including a guide rod hole and an external threaded ring seat. The diameter of the external threaded ring seat is larger than the diameter of the water guide seat.

[0015] The irregularly shaped guide drive rod, irregularly shaped drive guide cavity, smooth rod, and guide hole are slidably fitted together. The sealing ring is located inside the sealing cavity. The externally threaded annular seat is screwed into the internally threaded cavity. The sealing ring is slidably fitted with the smooth rod and extends into the water guide seat. The guide rod hole and smooth rod are slidably fitted together. The head is inserted into the sealing gasket. The screw is screwed into the internally threaded hole to seal and fix the seal. The sealing gasket is in close contact with the water guide seat to seal. The water guide seat and water guide cavity are corresponding and form an annular water cavity. The spline head is inserted into the spline hole. The screw fixes the cylindrical seat and spline head. The radial water guide hole, the annular water cavity, and the radial water outlet hole are connected.

[0016] The delay valve core for press-delay rotary temperature control is characterized in that: the delay valve includes a valve body, a valve cover, a delay spring, a driven rod, a small sealing gasket, a valve sealing element, a valve chip, a seat, and a fastening transmission sleeve;

[0017] The valve body includes an outlet chamber, a valve core seat plate, a delay chamber, a valve annular protrusion, a radial inlet hole, and a delay groove located in the delay chamber and communicating with the radial inlet hole. The valve core seat plate is provided with an axial water hole. The end of the delay chamber is provided with an internal thread and a countersunk hole.

[0018] The valve cover is equipped with an external threaded sealing part and a tool groove;

[0019] The driven rod has a polygonal part and a spring head at its end.

[0020] The seat includes a body, a valve stem, an axial drainage cavity, a guide cavity, and an annular sealing groove located on the valve stem, and the valve stem is provided with external threads;

[0021] The valve seal is located in an annular sealing groove. The driven rod passes through a small sealing gasket and extends out through the axial drainage cavity. The small sealing gasket fits against the top plate of the guide cavity, and the polygonal part slides with the guide cavity. The valve chip is located on the top of the body and surrounds the valve stem. The fastening transmission sleeve is screwed into the valve stem and the valve chip is fixed. The fastening transmission sleeve extends into the outlet cavity from the axial water hole. The valve chip fits with the valve core seat plate, and the valve seal slides with the delay cavity. The external threaded sealing part is screwed into the internal thread of the delay cavity, the valve cover and the countersunk hole are fitted together, and the delay spring fits with the external threaded sealing part and the polygonal part.

[0022] The water outlet chamber and the water guide chamber of the drive housing are screwed together, and the drive housing and the upper core cavity between the annular protrusion of the housing and the annular protrusion of the valve form an annular water outlet chamber.

[0023] The special feature of the press-delay rotary temperature-regulating delay valve core is that: the fastening transmission sleeve is provided with a water guide groove; and the driven rod extends out from the fastening transmission sleeve.

[0024] The special feature of the press-delay rotary temperature-regulating delay valve core is that the sealing ring component includes a sealing ring with an inverted trapezoidal groove and a sealing sleeve with a flange.

[0025] The sealing ring and the flange fit together, and the sealing sleeve is inserted into the water guide seat; the smooth rod part slides in conjunction with the sealing ring and the sealing sleeve.

[0026] The special feature of the press-delay rotary temperature-regulating delay valve core is that the cold water inlet and the hot water inlet respectively include an arc-shaped part and a chord part;

[0027] The arc-shaped portions of the cold water inlet and the hot water inlet are on the same circumference.

[0028] The special feature of the press-delay rotary temperature-regulating delay valve core is that the lower core shell is provided with an arc-shaped guide protrusion.

[0029] The lower part of the valve body rotates in conjunction with the arc-shaped guide protrusion, and the lower core shell between two adjacent arc-shaped guide protrusions and the valve body form an axial water guiding channel.

[0030] This utility model discloses a time-delay valve core for press-delay rotary temperature adjustment. Due to this structure, the drive device and the time-delay valve separate quickly, resulting in fast and unobstructed water output. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the present invention.

[0032] Figure 2 yes Figure 1 A-A view.

[0033] Figure 3 yes Figure 1 B-B view.

[0034] Figure 4 This is a perspective view of the mating of the moving valve core and the fixed valve core of this utility model.

[0035] Figure 5 This is one of the exploded perspective views of this utility model.

[0036] Figure 6 This is the second exploded perspective view of this utility model.

[0037] Figure 7 This is one of the exploded perspective views of the drive device and delay valve assembly of this utility model.

[0038] Figure 8 This is the second exploded perspective view of the drive device and delay valve assembly of this utility model. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] like Figure 1 , Figure 2 As shown, a time-delay valve core for press-delay rotary temperature control includes a base 1, a lower core shell 2, an upper core shell 3, a connecting seat 4, a guide sleeve 5, a spring 6, a knob 7, a fixed valve core 81, a moving valve core 82, a drive device 9, and a time-delay valve 10.

[0042] The base 1 is provided with a cold water hole 1A and a hot water hole 1B;

[0043] The upper core shell 3 includes a rotating hole 31 on the top plate and a radial water outlet hole 32;

[0044] The connector 4 is hollow and has an upper opening, including a countersunk hole 41, an external threaded portion 42, and a regular hexagonal head 43.

[0045] The lower end of the guide sleeve 5 is provided with an internal thread;

[0046] The fixed valve core 81 is provided with a cold water inlet hole 811 and a hot water inlet hole 812; the movable valve core 82 is provided with a mixing groove 821; the knob 7 is hollow with one end open;

[0047] The fixed valve core 81 is mounted on the base 1, with cold water hole 1A and hot water hole 1B corresponding to cold water inlet hole 811 and hot water inlet hole 812, respectively. An axial positioning plate is provided on the base 1, and an axial positioning groove is provided on the fixed valve core 81. The axial positioning plate and the axial positioning groove are fitted together. The upper core shell 3 and the lower core shell 2 are connected, and the base is embedded in and fixed within the lower core shell 2. The drive device 9 and the delay valve are respectively located within the upper core shell 3 and the lower core shell 2. The drive device 9 cooperates with the rotating hole 31. The knob 7, the drive device 9, and the delay valve... The time valve 10 is connected, and the knob 7, drive device 9, time delay valve 10 and moving valve core 82 rotate together to adjust the water temperature. Pressing the knob and drive device 9 drives the time delay valve 10. The upper core shell 3 is inserted into the countersunk hole 41. The internal thread of the guide sleeve 5 is screwed into the external thread 42 of the connecting seat 4. The spring 6 is located on the top of the upper core shell 3 and the end of the drive device 9 is inserted into the spring. The other end of the spring 9 extends into the knob 7 and cooperates with the end plate. The knob 7 is connected to the drive device 9 and slides with the guide sleeve 5.

[0048] The knob 7 includes a cylindrical base 71 and a head countersunk hole 72, and the cylindrical base 71 is provided with a spline toothed hole;

[0049] The drive device 9 includes a drive housing 91, a transmission rod 92, a sealing gasket 93, a screw 94, a sealing ring 95, and a water guide seat 96.

[0050] The drive housing 91 includes an irregularly shaped drive guide cavity 911 at the upper end, a guide hole 912, a shell annular protrusion 913 on the outer surface, a sealing cavity 914, an internal thread cavity 915, and a water guide cavity 916. The water guide cavity 916 is provided with a radial water guide hole.

[0051] The transmission rod 92 includes a splined head 921, an irregularly shaped guide drive rod portion 922, a smooth rod portion 923, a head 924, and an internal threaded hole 925 provided at the end;

[0052] The water guide seat 96 is hollow and has an upper opening, including a guide rod hole 961 and an external threaded ring seat 962. The diameter of the external threaded ring seat 962 is larger than the diameter of the water guide seat 96.

[0053] The irregularly shaped guide drive rod 922 and irregularly shaped drive guide cavity 911, as well as the smooth rod 923 and guide hole 912, are slidably engaged. The sealing ring 95 is located in the sealing cavity 914. The externally threaded annular seat 962 is screwed into the internally threaded cavity 915. The sealing ring 95 is slidably engaged with the smooth rod 923 and extends into the water guide seat 96. The guide rod hole 961 and the smooth rod 923 are slidably engaged. The head 924 is inserted into the sealing gasket 93. The screw 94 is screwed into the internally threaded hole 925 to seal and fix the seal. The sealing gasket 93 is fitted and sealed to the water guide seat 96. The water guide seat 96 and the water guide cavity 916 correspond to each other and form an annular water cavity. The splined head 921 is inserted into the splined toothed hole of the cylindrical seat 71. The screw fixes the cylindrical seat 71 and the splined head 921. The screw head is located in the head countersunk hole 72. The radial water guide hole, the annular water cavity, and the radial water outlet hole 32 are connected.

[0054] With this structure, the transmission rod 92 moves axially relative to the drive housing 91. When the transmission rod 92 rotates, it drives the drive housing to rotate. When the knob 7 is rotated, the transmission rod and the drive housing rotate together. The spring ensures that the drive device quickly returns to its original position when moving along the axis.

[0055] The time delay valve 10 includes a valve body 101, a valve cover 102, a time delay spring 103, a driven rod 104, a small sealing gasket 105, a valve sealing element 106, a valve chip 107, a seat 108, and a fastening transmission sleeve 109.

[0056] The valve body 101 includes a water outlet chamber 1011, a valve core seat plate 1012, a delay chamber 1013, a valve annular protrusion 1014, a radial water inlet hole 1015, and a delay groove 1016 disposed in the delay chamber 1013 and communicating with the radial water inlet hole 1015. The valve core seat plate 1012 is provided with an axial water hole. The end of the delay chamber 1013 is provided with an internal thread and a countersunk hole.

[0057] The valve cover 102 is provided with an external threaded sealing part 1021 and a tool groove 1022;

[0058] The driven rod 104 has a polygonal part 1041 and a spring post 1042 at its end.

[0059] The seat 108 includes a body 1081, a valve stem 1082, an axial drainage cavity 1083, a guide cavity 1084 and an annular sealing groove 1085 provided in the valve stem 1082, the drainage cavity 1083 and the guide cavity 1084 are connected, and the valve stem 1082 is provided with an external thread.

[0060] The valve seal 106 is disposed within the annular sealing groove 1085. The driven rod 104 passes through the small sealing gasket 105 and extends out through the axial drainage chamber 1083. The small sealing gasket 105 is in contact with the top plate of the guide chamber 1084, and the polygonal portion 1041 is in sliding engagement with the guide chamber 1084. The valve chip 107 is disposed on the top of the body portion 1081 and surrounds the valve stem portion 1082. The fastening transmission sleeve 109 is screwed into the valve stem portion 1082 and fixes the valve chip 107. The moving sleeve 109 extends into the outlet chamber 1011 through the axial water hole on the valve core seat plate 1012. The valve chip 107 cooperates with the valve core seat plate 1012. The valve seal 106 slides with the delay chamber 1013. The external thread sealing part 1021 is screwed into the internal thread of the delay chamber 1013. The valve cover 102 and the countersunk hole are fitted together. The delay spring 103 cooperates with the external thread sealing part 1021 and the polygonal part 1041. The spring post 1042 extends into the delay spring.

[0061] The water outlet chamber 1011 and the water guide chamber 916 of the drive housing 91 are screwed together. The drive housing 91 and the upper core housing 3 between the annular protrusion 913 of the housing and the annular protrusion 1014 of the valve form an annular water outlet chamber. The end of the valve body 101 is connected to the moving valve core and rotates together with it.

[0062] As a further improvement of this utility model: the fastening transmission sleeve 109 is provided with a water guide groove; the driven rod 104 extends out from the fastening transmission sleeve 109.

[0063] The sealing ring 95 includes a sealing ring 951 with an inverted trapezoidal groove and a sealing sleeve 952 with a flange;

[0064] The flanges of the sealing ring 951 and the sealing sleeve 952 are fitted together, and the sealing sleeve 952 is inserted into the water guide seat 96; the smooth rod part 923 is in sliding fit with the sealing ring 951 and the sealing sleeve 952.

[0065] As a further improvement of this utility model: the cold water inlet 811 and the hot water inlet 812 respectively include an arc-shaped part and a chord part;

[0066] The arc-shaped portions of the cold water inlet 811 and the hot water inlet 812 are on a circumference.

[0067] As a further improvement of this utility model: the lower core shell 2 is provided with an arc-shaped guide protrusion 21;

[0068] The lower part of the valve body 101 is rotatably engaged with the arc-shaped guide protrusion 21, and the lower core shell 2 and the valve body 101 between two adjacent arc-shaped guide protrusions 21 form an axial water guiding channel.

[0069] The lower core shell 2 between the valve annular protrusion 1014 and the fixed valve core 81 forms the water inlet chamber.

[0070] Figure 1 , Figure 2 This is a static view of the present invention. Figure 1 , Figure 2 In this state, pressing knob 7 causes knob 7, transmission rod 92, sealing gasket 93, and screw 94 to move downwards together. The head 941 of screw 94 drives driven rod 104 to move downwards, and the polygonal part 1041 moves downwards in guide cavity 1084. Water in delay cavity 1013 enters outlet cavity 1011 through guide cavity 1084 and drain cavity 1083. Then, polygonal part 1041 drives fastening transmission sleeve 109, seat 108 moves downwards, and valve chip 107 leaves valve core seat plate 1012. Water in lower core shell 2 enters valve body 101 through radial inlet hole 1015, then enters outlet cavity 1011 through guide hole on valve core seat plate 1012, and finally enters lower end of drive shell 91. When the hand is removed from knob 7, the knob, transmission rod 92, sealing gasket 93, and screw 94 automatically reset under the action of spring 9.

[0071] Water flows out through the radial water guide holes of the water guide cavity 916 and the radial water outlet holes 32 of the upper core shell 3; under the action of the delay spring 103, the driven rod 104 gradually moves upward; at the same time, it enters the delay cavity through the radial water inlet hole 1015 and the delay groove 1016. As the water and pressure in the delay cavity increase, the seat 108 moves upward, and the valve chip 107 is in contact with the valve core seat plate 1012. This achieves delayed valve closure.

[0072] Rotate knob 7, and knob 7, transmission rod 92, drive housing 91, valve body 101 and moving valve core 82 will rotate together to adjust the hot and cold water ratio and achieve water temperature adjustment.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A time-delay valve core for press-delay rotary temperature control, characterized in that: Includes a base, lower core shell, upper core shell, connecting seat, guide sleeve, spring, knob, fixed valve core, moving valve core, drive device, and time delay valve. The base is equipped with cold water holes and hot water holes; The upper core shell includes a rotating hole on the top plate and radial water outlet holes; The connector is hollow and has an upper opening, including a countersunk hole and an external thread. The fixed valve core is equipped with a cold water inlet and a hot water inlet; the movable valve core is equipped with a mixing groove; the knob is hollow with one end open; The fixed valve core is located on the base, and the cold water hole and hot water hole correspond to the cold water inlet hole and hot water inlet hole, respectively. The drive device and the delay valve are located in the upper core shell and the lower core shell, respectively. The drive device cooperates with the rotating hole. The knob, drive device and delay valve are connected. The knob, drive device and delay valve rotate together to adjust the water temperature. Pressing the knob and drive device drives the delay valve. The upper core shell is inserted into the countersunk hole, the guide sleeve is screwed into the external thread, the spring is located at the top of the upper core shell and the drive device is inserted into the spring, the other end of the spring extends into the knob and cooperates with the end plate, the knob is connected to the drive device and slides with the guide sleeve.

2. The time-delay valve core for press-delay rotary temperature adjustment according to claim 1, characterized in that: The knob includes a cylindrical base and a countersunk head, and the cylindrical base is provided with a spline toothed hole; The drive unit includes a drive housing, a transmission rod, a sealing gasket, screws, a sealing ring, and a water guide seat. The drive housing includes an irregularly shaped drive guide cavity at the upper end, a guide hole, a shell annular protrusion on the outer surface, a sealing cavity, an internal thread cavity, and a water guide cavity, with radial water guide holes provided on the water guide cavity. The transmission rod includes a splined head, an irregularly shaped guide drive rod section, a smooth rod section, a head, and an internally threaded hole at the end; The water guide seat is hollow and has an upper opening, including a guide rod hole and an external threaded ring seat. The diameter of the external threaded ring seat is larger than the diameter of the water guide seat. The irregularly shaped guide drive rod, irregularly shaped drive guide cavity, smooth rod, and guide hole are slidably fitted together. The sealing ring is located inside the sealing cavity. The externally threaded annular seat is screwed into the internally threaded cavity. The sealing ring is slidably fitted with the smooth rod and extends into the water guide seat. The guide rod hole and smooth rod are slidably fitted together. The head is inserted into the sealing gasket. The screw is screwed into the internally threaded hole to seal and fix the seal. The sealing gasket is in close contact with the water guide seat to seal. The water guide seat and water guide cavity are corresponding and form an annular water cavity. The spline head is inserted into the spline toothed hole. The screw fixes the cylindrical seat and spline head. The radial water guide hole, annular water cavity, and radial water outlet are connected.

3. The time-delay valve core for press-delay rotary temperature adjustment according to claim 2, characterized in that: The time-delay valve includes a valve body, a valve cover, a time-delay spring, a driven rod, a small sealing gasket, a valve seal, a valve chip, a seat, and a fastening transmission sleeve. The valve body includes an outlet chamber, a valve core seat plate, a delay chamber, a valve annular protrusion, a radial inlet hole, and a delay groove located in the delay chamber and communicating with the radial inlet hole. The valve core seat plate is provided with an axial water hole. The end of the delay chamber is provided with an internal thread and a countersunk hole. The valve cover is equipped with an external threaded sealing part and a tool groove; The driven rod has a polygonal part and a spring post at its end. The seat includes a body, a valve stem, an axial drainage cavity, a guide cavity, and an annular sealing groove located on the valve stem, and the valve stem is provided with external threads; The valve seal is located in an annular sealing groove. The driven rod passes through a small sealing gasket and extends out through the axial drainage chamber. The small sealing gasket fits against the top plate of the guide chamber, and the polygonal part slides with the guide chamber. The valve chip is located on the top of the body and surrounds the valve stem. The fastening transmission sleeve is screwed into the valve stem and fixes the valve chip. The fastening transmission sleeve extends into the outlet chamber from the axial water hole. The valve chip fits with the valve core seat plate, and the valve seal slides with the delay chamber. The external threaded sealing part is screwed into the internal thread of the delay chamber, the valve cover and the countersunk hole are fitted together, and the delay spring fits with the external threaded sealing part and the polygonal part. The water outlet chamber and the water guide chamber of the drive housing are screwed together, and the drive housing and the upper core housing between the annular protrusion of the housing and the annular protrusion of the valve form an annular water outlet chamber.

4. The time-delay valve core for press-delay rotary temperature adjustment according to claim 3, characterized in that: The fastening transmission sleeve is provided with a water guide groove; the driven rod extends out from the fastening transmission sleeve.

5. A time-delay valve core for press-delay rotary temperature adjustment according to claim 2, characterized in that: The sealing ring component includes a sealing ring with an inverted trapezoidal groove and a sealing sleeve with a flange; The sealing ring and the flange fit together, and the sealing sleeve is inserted into the water guide seat; the smooth rod part slides in conjunction with the sealing ring and the sealing sleeve.

6. The time-delay valve core for press-delay rotary temperature adjustment according to claim 1, characterized in that: The cold water inlet and the hot water inlet respectively include an arc-shaped part and a chord part; The arc-shaped portions of the cold water inlet and the hot water inlet are on the same circumference.

7. A time-delay valve core for press-delay rotary temperature adjustment according to claim 3, characterized in that: The lower core shell is provided with an arc-shaped guide protrusion; The lower part of the valve body rotates in conjunction with the arc-shaped guide protrusion, and the lower core shell between two adjacent arc-shaped guide protrusions and the valve body form an axial water guiding channel.

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