A double waterway ammonium key valve core for separate operation of domestic water and purified water

Abstract

A double-water-circuit key valve core for separate operation of domestic water and purified water comprises a base, a shell, a static ceramic plate, a dynamic ceramic plate, a water guide seat, a water sealing cover, a valve stem, a valve core, a knob and a driving assembly. The static ceramic plate is arranged on the base, and the cold water guide hole, the hot water guide hole and the domestic water guide hole are respectively connected with the cold water inlet hole, the hot water inlet hole and the domestic water outlet hole, and the radial water guide groove is connected with the seat pure water hole; the dynamic ceramic plate is arranged on the static ceramic plate, and the dynamic axial pure water hole is connected with the static axial pure water hole; the water sealing cover is arranged on the upper opening of the water guide cavity and is sealed, the base is connected with the lower end of the shell, the cylindrical driving part of the knob is rotationally matched and sealed with the sleeve of the shell, and the bottom cover part is liquid-sealed with the top plate of the shell; the driving assembly is arranged in the cylindrical driving part of the knob and cooperates with the valve stem. Regardless of whether the purified water circuit is on or off, the cold water, mixed water and hot water modes can be realized by turning the knob; the domestic water circuit and the purified water circuit are independent of each other and do not interfere with each other.

Description

Technical Field

[0001] The invention relates to a double-water-path valve core. Background Art

[0002] At present, in the prior art, a mixing faucet is a faucet that mixes hot and cold water and can adjust the water temperature. The internal faucet valve core controls the water flow rate. When using it, you only need to gently turn the switch by hand to open it, and then adjust the water temperature by rotating it. With the advent of water purifiers, more and more people choose to separate drinking water from other domestic water. For example, drinking water uses purified water purified by a water purifier, and washing vegetables and dishes uses ordinary mixed water, that is, raw water. This method is undoubtedly beneficial to people's health. In traditional kitchens, in order to be able to use purified water, a purified water outlet faucet needs to be installed separately, which causes too many faucets in the kitchen sink and inconveniences to use. Some faucets are also designed with dual waterways and dual switches. One switch is used to control tap water and one switch is used to control purified water. The internal flow channel design of this faucet structure is very complicated, and there are multiple switches, resulting in high faucet costs. The reason why the internal structure of the faucet is complicated and must be controlled by two switches is mainly because the existing faucet valve core cannot achieve completely independent distribution of purified water and raw water. Summary of the invention

[0003] The purpose of the present invention is to provide a double-water-path ammonium-key valve core for independently running domestic water and purified water, which has the characteristics of independent purified water and independent domestic water.

[0004] The present invention is realized as follows: a double-water-path ammonium key valve core for independently running domestic water and purified water comprises a base, a shell, a static ceramic sheet, a dynamic ceramic sheet, a water guide seat, a water sealing cover, a valve stem, a valve core, a knob and a driving assembly.

[0005] The base is equipped with cold water inlet, hot water inlet, domestic water outlet and pure water outlet.

[0006] The shell has a lower opening, and the shell includes a sleeve arranged on the top plate and a shell pure water hole arranged in the radial direction on the circumferential wall;

[0007] The static ceramic plate includes a cold water guide hole, a hot water guide hole, a domestic water guide hole, a static axial pure water hole arranged in the center, and a radial water guide groove arranged on the lower surface and connected to the axial pure water hole. The cold water guide hole, the hot water guide hole and the domestic water guide hole are respectively in the shape of an arc;

[0008] The moving ceramic plate includes a cold water hole, a hot water hole, a living water hole, a moving axial pure water hole arranged in the center, and an annular water tank arranged on the upper surface. The cold water hole, the hot water hole and the living water hole are connected to the annular water tank. The cold water hole, the hot water hole and the living water hole are arc-shaped respectively.

[0009] The water guide seat comprises a base, a water guide cavity arranged on the base, a valve core seat arranged on the base and a plurality of water guide holes arranged on the water guide cavity.

[0010] The knob comprises a cylindrical driving part with a lower opening and a bottom cover part, and a guide hole is arranged on the top plate of the cylindrical driving part;

[0011] The static ceramic plate is arranged on the base, and the cold water guide hole, hot water guide hole and domestic water guide hole are connected with the cold water inlet hole, hot water inlet hole and domestic water outlet hole respectively, and the radial water guide groove is connected with the pure water outlet hole; the dynamic ceramic plate is arranged on the static ceramic plate, and the dynamic axial pure water hole is connected with the static axial pure water hole; the water guide seat is arranged on the dynamic ceramic plate and connected together, and the valve core seat is connected with the dynamic axial pure water; the water sealing cover is arranged on the upper opening of the water guide cavity and is sealed, the valve stem and the valve stem hole of the water sealing cover are slidably matched, the valve core is matched with the valve core seat, and the pressure spring is arranged between the top disc of the valve stem and the water sealing seat; the upper end of the water guide seat is inserted into the bottom cover part of the knob, the base is connected to the lower end of the shell, the cylindrical driving part of the knob is rotatably matched and sealed with the sleeve of the shell, and the bottom cover part is liquid-sealed with the top plate of the shell; the driving assembly is arranged in the cylindrical driving part of the knob and matches with the valve stem; the driving assembly rotates with the knob, and the driving assembly is slidably matched with the top of the valve stem.

[0012] The dual-water-path ammonium-key valve core for independently running domestic water and purified water is special in that: the valve core fits with the valve core seat, domestic water is conducted and purified water is closed; the valve core is separated from the valve core seat, domestic water is conducted and purified water is always conducted.

[0013] The dual-water-path ammonium-key valve core for separate operation of domestic water and purified water is special in that the radial center angle of the center line of the cold water hole and the hot water hole of the moving ceramic plate is greater than the radial center angle of the center line of the cold water guide hole and the hot water guide hole on the static ceramic plate;

[0014] The dynamic ceramic piece rotates and water is discharged in the order of cold water, mixed cold and hot water and hot water.

[0015] The double-water-path ammonium-key valve core for independently running domestic water and purified water is special in that the domestic water guide holes on the static ceramic plate gradually increase in size from bottom to top in a clockwise or counterclockwise direction.

[0016] The dual-water-path key valve core for separate operation of domestic water and purified water is special in that: an axial guide groove is provided on the guide hole of the cylindrical driving part of the knob, a plurality of teeth are provided on the inner wall, a deep axial groove is formed by the gap between two adjacent teeth, a shallow axial groove and a spiral surface located on one side of the lower end are provided on the teeth; the deep axial groove and the shallow axial groove are respectively opposite to the axial guide groove;

[0017] The driving assembly includes a button, a follower and a return spring;

[0018] The button comprises a sliding body with a hollow lower opening, a driving tooth arranged at the lower part of the outer circumferential surface of the sliding body, and an axial guide rail connected to the driving tooth at the lower end, wherein the lower end of the driving tooth is angular;

[0019] The driven member comprises a circular bottom plate, a sliding cavity with an upper opening arranged on the circular bottom plate, and a driven tooth arranged on the circular seat plate and surrounding the sliding cavity, wherein the upper end of the driven tooth is provided with a driven spiral surface;

[0020] The return spring is arranged in the sliding cavity, the sliding cavity is arranged in the sliding body and slides together, the upper end of the return spring is matched with the top of the sliding body, the driving teeth are matched with the driven teeth, and the driven teeth are matched with the teeth; the sliding body of the button extends out of the knob through the guide hole, the axial guide rail is slidably matched with the axial guide groove, the circular bottom plate is slidably matched with the disk at the top of the valve stem when relative to each other, and the follower drives the valve stem to move axially.

[0021] The double-water-path ammonium-key valve core for independently running domestic water and purified water is special in that it also includes a ball.

[0022] A circular cavity with an upper opening is provided on the disc at the top of the valve stem;

[0023] The circular bottom plate is provided with a circular hole with a lower opening;

[0024] The ball is arranged in the circular cavity and extends out of the circular cavity. The ball is rotatably matched with the lower end of the circular hole. There is a gap between the circular bottom plate and the disc on the top of the valve stem.

[0025] The double-water-path ammonium-button valve core for independently running domestic water and purified water is special in that: a connecting part is provided at the upper end of the sliding body of the button, and an internal threaded connecting sleeve is provided in the connecting part;

[0026] The return spring is in the shape of a truncated cone;

[0027] The utility model also comprises a buffer ball, which is arranged on the top of the return spring and matches with the lower end of the internal thread connection sleeve.

[0028] The present invention provides a double-water-path ammonium-key valve core for independently running domestic water and purified water. Due to the adoption of such a structure, no matter whether the purified water path is on or off, the cold water, mixed water and hot water modes can be realized by turning the knob; the domestic water path and the purified water path are independent of each other and do not interfere with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a cross-sectional view of the present invention.

[0030] Figure 2 yes Figure 1 A-A view of.

[0031] Figure 3It is a perspective view of the present invention.

[0032] Figure 4 It is a partial three-dimensional exploded view of the present invention.

[0033] Figure 5 It is a perspective view of the closed state of the movable ceramic plate and the static ceramic plate of the present invention.

[0034] Figure 6 It is a perspective view of the open state of the movable ceramic plate and the static ceramic plate of the present invention.

[0035] Figure 7 It is a front view of the dynamic ceramic sheet of the present invention.

[0036] Figure 8 It is a three-dimensional diagram of the dynamic ceramic sheet of the present invention.

[0037] Fig. 9 It is a front view of the static ceramic sheet of the present invention.

[0038] Fig.10 It is a three-dimensional cross-sectional view of the static ceramic sheet of the present invention.

[0039] Fig.11 It is one of the three-dimensional exploded views of the present invention.

[0040] Fig.12 It is the second of the three-dimensional exploded diagrams of the present invention.

[0041] Fig.13 It is three-dimensional exploded view of the present invention.

[0042] Fig.14 It is four of the three-dimensional exploded views of the present invention.

[0043] Fig.15 It is a three-dimensional cross-sectional view of the knob of the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] like Figure 1 As shown, a dual-waterway ammonium key valve core for separate operation of domestic water and purified water includes a base 1, a shell 2, a static ceramic plate 3, a dynamic ceramic plate 4, a water guide seat 5, a water sealing cover 6, a valve stem 7, a valve core 71, a knob 8 and a drive assembly 9.

[0046] The base 1 is provided with a cold water inlet 1A, a hot water inlet 1B, a domestic water outlet 1C and a pure water outlet 1D.

[0047] The shell 2 has a lower opening, and the shell 2 includes a sleeve 21 arranged on the top plate and a shell pure water hole 22 arranged on the circumferential wall along the radial direction;

[0048] like Fig. 9 , Fig.10 As shown, the static ceramic plate 3 includes a cold water guide hole 32, a hot water guide hole 31, a life water guide hole 33, a static axial pure water hole 34 provided in the center, and a radial water guide groove 341 provided on the lower surface and connected to the axial pure water hole. The cold water guide hole 31, the hot water guide hole 32 and the life water guide hole 33 are respectively in the shape of an arc;

[0049] like Figure 7 , Figure 8 As shown, the moving ceramic plate 4 includes a cold water hole 41, a hot water hole 42, a living water hole 43, a moving axial pure water hole 44 provided in the center, and an annular water groove 45 provided on the upper surface. The cold water hole 41, the hot water hole 42 and the living water hole 43 are connected to the annular water groove 45; the cold water hole 41, the hot water hole 42 and the living water hole 43 are respectively in arc shape;

[0050] The water guide seat 5 includes a base 51, a water guide cavity 52 provided on the base, a valve core seat 53 provided on the base, and a plurality of water guide holes 521 provided on the water guide cavity. The diameter of the water guide cavity 52 is smaller than the diameter of the base 51, and the water guide holes on the valve core seat 53 are connected to the water guide cavity 52.

[0051] The knob 8 includes a cylindrical driving portion 81 with a lower opening and a bottom cover portion 82. A guide hole 811 is provided on the top plate of the cylindrical driving portion 81.

[0052] Figure 1 , Figure 2 In the embodiment, the valve core 71 is in the shape of a circular ring, and the valve core 71 may also be in the shape of a circular plate;

[0053] The static ceramic plate 3 is embedded in the base and connected together, the cold water guide hole 31, the hot water guide hole 32, and the domestic water guide hole 33 are respectively connected with the cold water inlet hole 1A, the hot water inlet hole 1B and the domestic water outlet hole 1C, and the radial water guide groove 341 is connected with the seat pure water hole 1D; the dynamic ceramic plate 4 is arranged on the static ceramic plate 3, and the dynamic axial pure water hole 44 is connected with the static axial pure water hole 34; the water guide seat 5 is arranged on the dynamic ceramic plate 4 and connected together, and the valve core seat 53 is connected with the dynamic axial pure water 44; the water sealing cover 6 is arranged on the upper opening of the water guiding cavity 52 and is sealed, the valve stem 7 is slidably matched with the valve stem hole of the water sealing cover 6, the valve core 71 is matched with the valve core seat 53, and the pressure spring 72 is arranged between the top disc 73 of the valve stem 7 and the water sealing seat 6, and the pressure spring The upper end and the lower end respectively cooperate with the upper spring seat on the top disc 73 and the lower spring seat on the water sealing seat 6; the upper end of the water guide cavity 52 of the water guide seat 5 is inserted into the bottom cover 82 of the knob 8 and connects the water sealing cover 6 and the water guide seat 5 together, the base 1 is connected to the lower end of the shell 2, the gap between the water guide cavity 5 and the shell 2 constitutes a pure water cavity, the shell pure water hole 22, the pure water cavity, the water guide hole 521 and the valve core seat 53 are connected in sequence, the cylindrical driving part 81 of the knob 8 rotates and cooperates with the sleeve 21 of the shell 2 and is sealed, the bottom cover 82 rotates and cooperates with the top plate of the shell 2 and is liquid-tight; the driving component 9 is arranged in the cylindrical driving part 81 of the knob 8 and cooperates with the valve stem 7; the driving component 9 rotates with the knob 8, and the driving component 9 slides and cooperates with the top of the valve stem 7. The moving ceramic plate 4, the water guide seat 5, the water sealing cover 6 and the knob 8 rotate together; the driving component 9 moves the valve stem 7 along the axis;

[0054] The domestic water passage is always open, that is, the domestic water is conducted by turning the knob 8, which has nothing to do with the matching state of the valve core 71 and the valve core seat 53; the valve core 71 fits with the valve core seat 53, the domestic water is conducted, and the pure water valve is closed; Figure 1 , Figure 2 As shown, the valve core 71 is separated from the valve core seat 53, the domestic water is conducted, and the purified water is always conducted; the shell purified water hole 22, the purified water cavity, the water guide hole 521, the valve core seat 53, the dynamic axial purified water hole 44 and the static axial purified water hole 34, the radial water guide groove 341 and the seat purified water hole 1D are sequentially connected, and the domestic waterway and the purified waterway are independent and do not interfere with each other;

[0055] The valve core seat 53, the dynamic axial pure water hole 44, the static axial pure water hole 34, the radial water guide groove 341 and the seat pure water hole 1D are always in a connected state.

[0056] like Figure 5 , Figure 7 , Fig. 9 As shown, the radial center angle α of the cold water hole 41 and the hot water hole 42 of the moving ceramic plate 4 is greater than the radial center angle β of the cold water guide hole 31 and the hot water guide hole 32 on the static ceramic plate 3;

[0057] like Figure 3 , Figure 5 , Figure 6 As shown, in Figure 3 In this state, the knob 8 is rotated counterclockwise, and the water sealing cover 6, the water guide seat 5 and the movable ceramic plate 4 rotate together. The movable ceramic plate 4 rotates counterclockwise, and the cold water hole 41 is first connected with the cold water guide hole 31; then the rotation continues, the cold water hole 41 is connected with the cold water guide hole 31, and the hot water hole 42 is connected with the hot water guide hole 32; then the rotation continues, the cold water hole 41 is first staggered with the cold water guide hole 31, and the hot water hole 42 is connected with the hot water guide hole 32, and water is discharged in the order of cold water, cold and hot mixed water and hot water;

[0058] If Figure 7 , Figure 8 , Fig. 9 , Fig.10 In the embodiment, the cold water hole 41 and the hot water hole 42 are interchanged, the cold water guide hole 31 and the hot water guide hole 32 are interchanged, and the knob 8 is turned clockwise to discharge water in the order of cold water, mixed cold and hot water, and hot water.

[0059] like Fig. 9 , Fig.10 As shown, the living water guide holes 33 on the static ceramic plate 3 gradually increase in size from bottom to top in a clockwise or counterclockwise direction.

[0060] like Fig.15 As shown, the guide hole 811 of the cylindrical driving part 81 of the knob 8 is provided with an axial guide groove 812, and a plurality of teeth 83 are provided on the inner wall. The gap between two adjacent teeth 83 constitutes a deep axial groove 84, and the teeth 83 are provided with a shallow axial groove 831 and a spiral surface 832 located at one side of the lower end; the deep axial groove 83 and the shallow axial groove 831 are respectively opposite to the axial guide groove 812; the spiral surface 832 is a guide stop notch at the lower end of the tooth 83, and the top of the guide stop notch is provided with a spiral surface 832.

[0061] The driving assembly 9 includes a button 91, a follower 92 and a return spring 93;

[0062] The button 91 includes a sliding body 911 with a hollow bottom opening, a driving tooth 912 provided at the lower part of the outer circumferential surface of the sliding body, and an axial guide rail 913 connected to the driving tooth at the lower end, and the lower end of the driving tooth 912 is angular;

[0063] The driven member 92 includes a circular bottom plate 921, a sliding cavity 922 with an upper opening provided on the circular bottom plate, and a driven tooth 923 provided on a circular seat plate and surrounding the sliding cavity. The upper end of the driven tooth 923 is provided with a driven spiral surface. In the figure, there are eight driving teeth 912 and four driven teeth 923, and the driving teeth 912 are multiples of the driven teeth 923.

[0064] The return spring 93 is arranged in the sliding cavity 922, and the sliding cavity 922 is arranged in the sliding body 911 and slides together. The upper end of the return spring 93 is matched with the top of the sliding body 911, the driving tooth 912 is matched with the driven tooth 923, and the driven tooth 923 is matched with the tooth 83. The driven tooth 923 is slidably matched with the spiral surface 832 and stops. The sliding body 911 of the button 91 passes through the guide hole 811 and extends out of the knob 2. The axial guide rail 913 is slidably matched with the axial guide groove 812. The circular bottom plate 921 is slidably matched with the disk 73 at the top of the valve stem 7 when facing each other, and the driven member 92 drives the valve stem 7 to move axially.

[0065] The present invention is further improved by comprising a ball 10,

[0066] The disc 73 at the top of the valve stem 7 is provided with a circular cavity 731 with an upper opening;

[0067] The circular bottom plate 921 is provided with a circular hole 9211 with a lower opening, or a spherical curved hole;

[0068] The ball 10 is arranged in the circular cavity 731 and extends out of the circular cavity 731. The ball 10 rotates with the lower end of the circular hole 9211. There is a gap between the circular bottom plate 921 and the disc 73 on the top of the valve stem 7; the follower 92 rotates relative to the valve stem 7.

[0069] The upper end of the sliding body 911 of the button 91 is provided with a connecting portion 914, and the connecting portion 914 is provided with an internal thread connecting sleeve 11;

[0070] The return spring 93 is in the shape of a truncated cone, or in other words, the return spring 93 is in the shape of a tower;

[0071] It also includes a buffer ball 12 , which is arranged on the top of the return spring 93 and cooperates with the lower end of the internal thread connection sleeve 11 .

[0072] like Figure 1 , Figure 2 As shown, the valve core 71 is separated from the valve core seat 54, which is the pure water path conduction state, and the driven tooth 923 is located in the deep axial groove 84; in the separated state, the button 91 is pressed, the button 91 moves downward, the driving tooth 912 drives the driven tooth 923, the follower 92 rotates, the driven tooth 923 enters the spiral surface 832, and then stops; at the same time, the valve stem 7 and the valve core 71 move downward, the lower end of the valve stem 7 is inserted into the water guide hole of the valve core seat 53, and the valve core 71 is fitted with the upper end of the valve core seat 53 in a closed state, which is the pure water path closed state;

[0073] In the pure water channel closed state, the button 91 is pressed again, the follower 92 continues to rotate, and the follower tooth 923 enters the next deep axial groove 84. When switching between the pure water channel conducting state and the pure water channel closed state, only the button 91 needs to be pressed, and the switching is convenient.

[0074] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. A double-waterway ammonium key valve core for separate operation of domestic water and purified water, characterized in that: It includes a base, a shell, a static ceramic plate, a dynamic ceramic plate, a water guide seat, a water sealing cover, a valve stem, a valve core, a knob and a drive assembly. The base is equipped with cold water inlet, hot water inlet, domestic water outlet and pure water outlet. The shell has a lower opening, and the shell includes a sleeve arranged on the top plate and a shell pure water hole arranged in the radial direction on the circumferential wall; The static ceramic plate includes a cold water guide hole, a hot water guide hole, a domestic water guide hole, a static axial pure water hole arranged in the center, and a radial water guide groove arranged on the lower surface and connected to the axial pure water hole. The cold water guide hole, the hot water guide hole and the domestic water guide hole are respectively in the shape of an arc; The moving ceramic plate includes a cold water hole, a hot water hole, a living water hole, a moving axial pure water hole arranged in the center, and an annular water tank arranged on the upper surface. The cold water hole, the hot water hole and the living water hole are connected to the annular water tank. The cold water hole, the hot water hole and the living water hole are arc-shaped respectively. The water guide seat comprises a base, a water guide cavity arranged on the base, a valve core seat arranged on the base and a plurality of water guide holes arranged on the water guide cavity. The knob comprises a cylindrical driving part with a lower opening and a bottom cover part, and a guide hole is arranged on the top plate of the cylindrical driving part; The static ceramic plate is arranged on the base, and the cold water guide hole, hot water guide hole and domestic water guide hole are connected with the cold water inlet hole, hot water inlet hole and domestic water outlet hole respectively, and the radial water guide groove is connected with the seat pure water hole; the dynamic ceramic plate is arranged on the static ceramic plate, and the dynamic axial pure water hole is connected with the static axial pure water hole; the water guide seat is arranged on the dynamic ceramic plate and connected together, and the valve core seat is connected with the dynamic axial pure water; the water sealing cover is arranged on the upper opening of the water guide cavity and is sealed, the valve stem and the valve stem hole of the water sealing cover are slidably matched, the valve core is matched with the valve core seat, and the pressure spring is arranged between the top disc of the valve stem and the water sealing seat; the upper end of the water guide seat is inserted into the bottom cover part of the knob, the base is connected to the lower end of the shell, the cylindrical driving part of the knob is rotatably matched and sealed with the sleeve of the shell, and the bottom cover part is liquid-sealed with the top plate of the shell; the driving assembly is arranged in the cylindrical driving part of the knob and matches with the valve stem; the driving assembly rotates with the knob, and the driving assembly is slidably matched with the top of the valve stem; An axial guide groove is provided on the guide hole of the cylindrical driving part of the knob, a plurality of teeth are provided on the inner wall of the cylindrical driving part, a deep axial groove is formed by the gap between two adjacent teeth, a shallow axial groove and a helical surface located on one side of the lower end are provided on the teeth; the deep axial groove and the shallow axial groove are respectively opposite to the axial guide groove; The driving assembly includes a button, a follower and a return spring; The button comprises a sliding body with a hollow bottom opening, a driving tooth arranged at the lower part of the outer circumferential surface of the sliding body, and an axial guide rail connected to the driving tooth at the lower end, wherein the lower end of the driving tooth is angular; The driven member comprises a circular bottom plate, a sliding cavity with an upper opening arranged on the circular bottom plate, and a driven tooth arranged on the circular seat plate and surrounding the sliding cavity, wherein the upper end of the driven tooth is provided with a driven spiral surface; The return spring is arranged in the sliding cavity, the sliding cavity is arranged in the sliding body and slides together, the upper end of the return spring is matched with the top of the sliding body, the driving teeth are matched with the driven teeth, and the driven teeth are matched with the teeth; the sliding body of the button extends out of the knob through the guide hole, the axial guide rail is slidably matched with the axial guide groove, the circular bottom plate is slidably matched with the disk at the top of the valve stem when relative to each other, and the follower drives the valve stem to move axially.

2. A dual-waterway ammonium-key valve core for separate operation of domestic water and purified water according to claim 1, characterized in that: The valve core fits with the valve core seat, domestic water is conducted and the purified water is closed; the valve core is separated from the valve core seat, domestic water is conducted and the purified water is always conducted.

3. A dual-waterway ammonium-key valve core for separate operation of domestic water and purified water according to claim 1, characterized in that: The radial center angle of the center line of the cold water hole and the hot water hole of the moving ceramic plate is greater than the radial center angle of the center line of the cold water guide hole and the hot water guide hole on the static ceramic plate; The movable ceramic piece rotates and water is discharged in the order of cold water, mixed cold and hot water and hot water.

4. A dual-waterway ammonium-key valve core for separate operation of domestic water and purified water according to claim 1, characterized in that: The living water guide holes on the static ceramic sheet gradually increase in size from bottom to top in a clockwise or counterclockwise direction.

5. A dual-waterway ammonium key valve core for separate operation of domestic water and purified water according to claim 1, characterized in that: Also includes a ball, A circular cavity with an upper opening is provided on the disc at the top of the valve stem; The circular bottom plate is provided with a circular hole with a lower opening; The ball is arranged in the circular cavity and extends out of the circular cavity. The ball is rotatably matched with the lower end of the circular hole. There is a gap between the circular bottom plate and the disc on the top of the valve stem.

6. A dual-waterway ammonium key valve core for separate operation of domestic water and purified water according to claim 5, characterized in that: The upper end of the sliding body of the button is provided with a connecting portion, and an internal thread connecting sleeve is provided in the connecting portion; The return spring is in the shape of a truncated cone; The utility model also comprises a buffer ball, which is arranged on the top of the return spring and matches with the lower end of the internal thread connection sleeve.

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