CN111365493A - Coaxial constant-temperature shunt valve - Google Patents

Abstract

The invention provides a coaxial constant temperature water dividing valve, which belongs to the technical field of plumbing equipment. It solves the problems of large volume and poor versatility of the existing thermostatic water diverting valve. The coaxial thermostatic water diverter valve includes a valve core shell, a valve core base and a temperature adjustment handle. The valve core shell is provided with a stud assembly, a plunger, a mandrel assembly, a return spring, a moving piece and a fixed plate in order from top to bottom. The valve core casing is also provided with a moving plate adjusting seat, the valve core casing is provided with a moving plate adjusting knob, and a sealing member is provided between the moving plate adjusting seat and the valve core casing and near the plunger. A cold water inlet is provided on the peripheral wall of the casing and above the seal member 1, a hot water inlet 1 is formed on the peripheral wall of the valve core casing and below the seal member 1, and a hot water inlet 2 is formed at the bottom of the valve core base. The invention has the advantages of small size, convenient operation, convenient product design of the faucet, and satisfying the diversified design requirements of the faucet.

Description

A coaxial thermostatic water diverter valve

technical field

The invention belongs to the technical field of plumbing equipment, and relates to a thermostatic valve, in particular to a coaxial thermostatic water diverter valve.

Background technique

In order to solve the problem of hot and cold water in the bathing process, people invented the thermostatic valve, but there are usually multiple bathing water outlets in the bathroom, so people added the water separation function on the basis of the original thermostatic valve to form a constant temperature water separation. valve.

For example, my country provides a patent named "Water Separation Thermostatic Valve" and the application number is 2016214338111. It is known that the water separation thermostatic valve includes a base, a shell, a water separation moving piece, and a water separation static piece. When in use, by rotating the base and the shell, The water separation moving piece is rotated relative to the water separation static piece, and the second water outlet on the water separation moving piece is communicated with the first water outlet of the water separation static piece, so as to realize the water supply of the constant temperature mixed water at the water outlet; Different, so that the isolation part of the water-separating static piece can completely block the different second water outlets, so as to realize the switching of the water supply of the two water outlets; by rotating the base and the different angles of the shell, so that the isolation part of the water-dividing static piece A second water outlet is shielded with different opening sizes, so as to realize the control of the flow rate of the mixed water at one water outlet. However, the water diversion thermostatic valve lacks the closing function, which makes the structural design of the faucet more complicated, and the diameter and volume of the water diversion thermostatic valve are too large, which is inconvenient to operate and has poor versatility.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above problems existing in the prior art, and to provide a coaxial thermostatic water diverter valve with a small volume, which can realize the water diversion effect and make the mixed water outflow effect good.

The purpose of the present invention can be achieved through the following technical solutions: a coaxial thermostatic water diverter valve, comprising a valve core shell, a valve core base and a temperature regulating handle, and the valve core shell is provided with studs in sequence from top to bottom assembly, plunger, mandrel assembly, return spring, moving piece and fixed piece, the plunger is driven to move axially by rotating the temperature adjustment handle to adjust the outlet temperature of the mixed water. There is a moving piece adjusting seat that can drive the moving piece to rotate, and the valve core shell is provided with a moving piece adjusting knob for controlling the rotation of the braking piece adjusting seat. The moving piece is used to achieve the effect of mixing water and water. A sealing member 1 is provided between the moving piece adjusting seat and the valve core shell and at a position close to the plunger. The peripheral wall of the valve core shell and A cold water inlet for cold water is opened above the seal 1, and a hot water inlet for hot water is opened on the peripheral wall of the valve core shell and below the seal 1. The moving piece adjusts There is a mixing cavity in the seat for the mandrel assembly to be installed and used for mixing cold and hot water to make the mandrel assembly temperature-sensing. The position corresponding to the cold water inlet on the moving piece adjustment seat is provided with a number of cooling water passages. Cold water inlet openings, a number of hot water inflow holes for hot water inflow are opened on the moving piece adjusting seat at the position corresponding to the hot water inlet 1, and the moving piece adjusting seat is located at the hot water inflow hole There are a number of hot water inlet openings corresponding to the lower part of the valve core for hot water to flow in, and the bottom of the valve core base is provided with a hot water inlet 2 which is connected with the hot water inlet openings and allows hot water to enter. There are several hot water inlet holes of the moving piece that are evenly spaced in the circumferential direction and that supply hot water to enter. There is a water inlet hole in the middle of the moving piece, and a platform is provided in the middle of the moving piece, and the platform has a mixing water outlet hole that is connected with the mixing cavity for the outflow of cold and hot mixed water, and the stator has two holes that can be respectively mixed with The first water outlet is connected to the second mixed water outlet and the third mixed water outlet for the hot and cold mixed water to flow out. The bottom of the valve core base is provided with two three-phase connection with the mixed water outlet two and the mixed water outlet, respectively, for cold water mixed water. The mixed water outlet 1 and the mixed water outlet 2 flow out. The hot water can enter the mixing cavity through the hot water inlet 1, the hot water inflow hole and the lower end face of the plunger in sequence, or can pass through the hot water inlet 2 and the stator heat inlet in sequence. The water hole, the hot water inlet hole of the moving piece, the hot water inlet opening, the hot water inflow hole and the lower end face of the plunger enter the mixing cavity or enter the moving piece adjustment seat from the hot water inlet 1 and the hot water inlet 2 at the same time and pass the hot water. The inflow hole and the lower end face of the plunger enter the interior of the mixing cavity, and the cold water enters the mixing cavity through the cold water inlet and the upper end face of the plunger in turn and mixes with the hot water to form a cold and hot mixed water. Two out.

In the above-mentioned coaxial thermostatic water diverter valve, the moving piece and the adjusting seat of the moving piece are in contact with each other to form a mutually sealed sealing surface 1, and the stator and the valve core base are in contact with each other. A sealing surface two that is sealed to each other is formed.

In the above-mentioned coaxial thermostatic water diversion valve, an upwardly protruding convex seat is provided on the valve core shell and between the moving plate adjusting knob, and a limiting spring and a limit spring are arranged in the convex seat. Limit beads.

In the above-mentioned coaxial thermostatic water diverter valve, the inner peripheral wall of the bottom of the moving plate adjustment seat has a number of strip-shaped protrusions that are used to make the core rod assembly more adequately sense the temperature and improve the temperature accuracy. start.

In the above-mentioned coaxial thermostatic water diverter valve, a connecting portion extends and protrudes from the top of the moving plate adjusting seat toward the moving plate adjusting knob, and the moving plate adjusting knob drives the moving plate adjusting seat to rotate through the connecting portion. And then realize the rotation of the moving piece.

In the above-mentioned coaxial thermostatic water-separating valve, a second sealing member is provided between the valve core casing and the temperature regulating handle, and the valve core casing and the moving piece regulating seat are located between the valve core casing and the moving piece adjusting seat A number of sealing elements 3 are arranged above the sealing element 1, and a plurality of sealing elements 4 are arranged on the valve core shell. A sealing member 5 is arranged below the sealing member 1, and a number of sealing members 6 are provided at the position between the moving plate adjustment seat and the moving plate corresponding to the sealing surface 1. The sealing member 6 is used for sealing. Between the stator of the valve core and the valve core base corresponding to the position of the sealing surface two, there is a sealing member 7 for sealing, and the bottom of the valve core base is provided with a number of sealing members 8 for sealing. Between the plug and the adjusting seat of the moving piece, there is a sealing member 9 that acts as a seal, and an E-type circlip is arranged between the bottom of the temperature regulation handle and the valve core shell, and the valve core shell and the moving piece adjusting knob are connected. A limit circlip is arranged between the valve core casings and between the valve core casing and the temperature regulating handle.

In the above-mentioned coaxial thermostatic water diverter valve, a cold water inlet filter is sleeved at the position corresponding to the cold water inlet on the valve core shell, and a cold water inlet filter is set on the valve core shell corresponding to the hot water inlet. The first hot water inlet filter is set at the position of the valve core, and the second hot water filter is set at the position corresponding to the second hot water inlet at the bottom of the valve core base.

Compared with the prior art, the coaxial thermostatic water diverter valve has the following advantages:

1. Through the optimized design of the structure, the coaxial thermostatic water diverter valve makes its outer diameter reach the D35 specification. Most of the thermostatic diverter valves on the market are D40 thermostatic diverter valves. Therefore, the D35 thermostatic water diverter valve is convenient for faucet products. Design to meet the diverse design needs of faucets;

2. The moving film adjustment knob and the temperature adjustment handle do not interfere with each other during operation, which improves the stability and operation experience of the product;

3. The coaxial thermostatic water distribution valve has the functions of water separation and opening and closing, which makes the design of the faucet simpler;

4. The coaxial thermostatic water diverter valve has various water inlet methods and is suitable for the water inlet structure of different faucets.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the coaxial thermostatic water diverter valve.

Figure 2 is an exploded view of the coaxial thermostatic water diverter valve.

FIG. 3 is a schematic cross-sectional structure diagram of the coaxial thermostatic water diverter valve.

FIG. 4 is a schematic three-dimensional structure diagram of a moving piece adjusting seat in the coaxial thermostatic water diverter valve.

FIG. 5 is a schematic three-dimensional structure diagram of the moving piece and the fixed piece in the coaxial thermostatic water diverter valve.

FIG. 6 is a cross-sectional structural diagram of the valve core shell in the coaxial thermostatic water diverter valve.

FIG. 7 is a schematic top view of the structure of the adjusting seat in the coaxial thermostatic water diverter valve.

In the figure, 1, valve core shell; 2, valve core base; 3, temperature adjustment handle; 4, stud assembly; 5, plunger; 6, mandrel assembly; 7, return spring; 8, moving piece; 9, Fixed plate; 10. Adjusting seat for moving plate; 11. Adjusting knob for moving plate; 12. Seal 1; 13. Cold water inlet; 14. Hot water inlet 1; 15. Mixing cavity; 16. Cold water opening; 17. Hot water inlet hole; 18. Hot water inlet opening; 19. Hot water inlet 2; 20. Moving piece hot water inlet hole; 21. Fixed piece hot water inlet hole; 22. Platform; ; 24. Mixing outlet 2; 25. Mixing outlet 3; 26. Mixing outlet 1; 27. Mixing outlet 2; 28. Sealing surface 1; 29. Sealing surface 2; Position spring; 32, limit ball; 33, water through hole; 34, strip protrusion; 35, connecting part; 36, seal two; 37, seal three; 38, seal four; 39, seal Part five; 40, seal part six; 41, seal part seven; 42, seal part eight; 43, seal part nine; 44, E-type circlip; 45, limit circlip; 46, positioning foot; Water filter; 48, hot water filter one; 49, hot water filter two; 50, wear-resistant gasket.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, this coaxial thermostatic water diverter valve includes valve core shell 1, valve core base 2 and temperature adjustment handle 3, valve The core shell 1 is provided with a stud assembly 4, a plunger 5, a mandrel assembly 6, a return spring 7, a moving piece 8 and a fixed piece 9 in order from top to bottom, and the plunger 5 is driven to move axially by rotating the temperature adjustment handle 3 For adjusting the outlet water temperature of the mixed water, the valve core housing 1 is also provided with a moving plate adjusting seat 10 that can drive the moving plate 8 to rotate, and the valve core housing 1 is provided with a moving plate adjusting seat 10 for controlling the rotation of the brake plate adjusting seat 10. Knob 11, by rotating the moving piece adjusting knob 11 to drive the moving piece adjusting seat 10 to rotate so as to adjust the moving piece 8 to achieve the effect of mixing water and water, the position between the moving piece adjusting seat 10 and the valve core shell 1 and close to the plunger 5 There is a sealing member 12 that acts as a seal, and a cold water inlet 13 for cold water is opened on the peripheral wall of the valve core housing 1 and located above the sealing member 12. There is a hot water inlet 14 at the bottom for hot water to enter, and the moving piece adjusting seat 10 has a mixing cavity 15 for installing the mandrel assembly 6 and for mixing cold and hot water to make the mandrel assembly 6 feel the temperature. The position corresponding to the cold water inlet 13 on the blade adjustment seat 10 is provided with a number of cold water inlet openings 16 for cold water to pass through, and a number of cold water inlet holes 16 are opened on the moving blade adjustment seat 10 at the position corresponding to the hot water inlet 14. The hot water inflow hole 17 for the inflow of hot water, the rotor adjusting seat 10 is provided with a number of hot water inflow holes 18 corresponding to the hot water inflow hole 17 below the hot water inflow hole 17, and the bottom of the valve core base 2 is provided with a corresponding hot water inflow hole 18. The water inlet opening 18 is connected to the hot water inlet 2 19 for hot water to enter. The moving plate 8 is provided with a number of moving plate hot water inlet holes 20 that are evenly distributed in the circumferential direction and supply hot water. A fixed plate hot water inlet hole 21 is symmetrically opened for hot water to enter and can be communicated with the moving plate hot water inlet hole 20. A platform 22 is provided in the middle of the moving plate 8, and the platform 22 is connected with the mixing cavity 15. The mixed water outlet hole one 23 for the outflow of the hot and cold mixed water is provided on the stator 9 with two mixed water outlet holes 24 and three mixed water outlet holes 25 which can be respectively communicated with the mixed water outlet hole one 23 for the outflow of the cold and hot mixed water. The bottom of the valve core base 2 is provided with two mixed water outlet 1 26 and two mixed water outlet 27 which are respectively connected with the mixed water outlet hole 2 24 and the mixed water outlet hole 3 25 for the cold water mixed water to flow out. The hot water can pass through the hot water inlet in sequence. One 14. The hot water inflow hole 17 and the lower end face of the plunger 5 enter the mixing cavity 15 or can pass through the hot water inlet 2 19, the stator hot water inlet hole 21, the moving piece hot water inlet hole 20, and the hot water inlet opening in sequence. The hole 18, the hot water inflow hole 17 and the lower end face of the plunger 5 enter the mixing cavity 15 or simultaneously enter the rotor adjusting seat 10 from the hot water inlet 14 and the hot water inlet 2 19 and pass through the hot water inflow hole 17 and the column. The lower end surface of the plug 5 enters the mixing cavity 15, and the cold water enters the mixing cavity 15 through the cold water inlet 13 and the upper end surface of the plunger 5 in turn and mixes with the hot water to form a hot and cold mixed water, and is mixed from the mixing outlet 1 26 or mixed. The second water outlet 27 flows out, the position corresponding to the cold water inlet 13 on the valve core shell 1 is sleeved with a cold water inlet filter 47, and the position corresponding to the hot water inlet one 14 on the valve core shell 1 is sleeved. The first water filter screen 48, the second hot water filter screen 49 is sleeved at the position of the bottom of the valve core base 2 corresponding to the second hot water inlet 19, and the moving piece 8 and the moving piece adjusting seat 10 are fitted together to form a mutual seal. The first sealing surface 28, the stator 9 and the valve core base 2 are fitted together to form a mutually sealed sealing surface 29. The top of the moving plate adjusting seat 10 extends toward the moving plate adjusting knob 11. There is a connecting portion 35 protruding. The adjusting knob 11 drives the moving piece adjusting base 10 to rotate through the connecting portion 35 so as to realize the rotation of the moving piece 8 .

In further detail, a convex seat 30 protruding upward is provided on the valve core housing 1 and between the moving plate adjusting knob 11 , and a limiting spring 31 and a limiting bead 32 are arranged in the convex seat 30 . And the setting of the limit spring 31 enables a prompt sound to be heard when the moving piece adjusting knob 11 is rotated, which improves the user's experience.

In further detail, the inner peripheral wall of the bottom of the moving plate adjusting seat 10 has a number of strip-shaped protrusions 34 for making the core rod assembly 6 more fully temperature-sensing and improving the temperature accuracy. The setting of 34 improves the mixing effect of cold and hot water, and makes the water discharge effect better.

To further elaborate, in order to improve the sealing performance, a sealing member 2 36 for sealing is provided between the valve core housing 1 and the temperature adjustment handle 3 . A number of seals 37 for sealing are provided above, and a number of seals 38 for sealing are provided on the valve core housing 1. The valve core housing 1 and the moving piece adjusting seat 10 are located between the seals 1 and 12. The lower part is provided with a sealing member 539 for sealing, and a number of sealing members 640 for sealing are provided at the position between the moving plate adjustment seat 10 and the moving plate 8 corresponding to the sealing surface 128, and the fixed plate 9 and the The position between the valve core base 2 corresponding to the sealing surface 29 is provided with a sealing member 741 for sealing, and the bottom of the valve core base 2 is provided with a number of sealing members 842 for sealing, the plunger 5 and the moving piece A sealing member 9 43 for sealing is provided between the adjustment seat 10 , an E-type snap spring 44 is arranged between the bottom of the temperature adjustment handle 3 and the valve core shell 1 , and a limited space is provided between the valve core shell 1 and the moving plate adjustment knob 11 . The position retaining spring 45 is provided with a wear-resistant gasket 50 in the valve core casing 1 and between the valve core casing 1 and the temperature regulating handle 3 .

The plunger 5 is provided with a plurality of water through holes 33 which are respectively connected to the cold water inlet 13 and the mixing cavity 15. The water through holes 33 supply cold water to pass through, so that the cold water flows into the mixing cavity 15 and mixes with hot water.

The bottom of the base is located on both sides of the hot water inlet 2 19 with outwardly protruding positioning feet 46 . The positioning feet 46 play a positioning role when the coaxial thermostatic water diverter valve is operating or installed.

Example 1:

The coaxial thermostatic water diverter valve has a separate hot water inlet 14, the hot water enters the mixing cavity 15 through the hot water inlet 14, the hot water inflow hole 17 and the lower end face of the plunger 5 in sequence, and the cold water sequentially passes through the cold water inlet 13. The upper end face of the plunger 5 enters the mixing cavity 15 and is mixed with hot water to form a hot and cold mixed water, and flows out from the mixing outlet 1 26 or the mixing outlet 2 27;

Embodiment 2:

The coaxial thermostatic water diverter valve has a separate hot water inlet 2 19, and the hot water passes through the hot water inlet 2 19, the fixed plate hot water inlet hole 21, the moving plate hot water inlet hole 20, the hot water inlet hole 18, and the hot water in sequence. The inflow hole 17 and the lower end face of the plunger 5 enter the mixing cavity 15, and the cold water enters the mixing cavity 15 through the cold water inlet 13 and the upper end face of the plunger 5 in turn and mixes with the hot water to form a hot and cold mixed water, and flows from the mixing outlet. One 26 or mixed water outlet two 27 flows out;

Embodiment three:

The coaxial thermostatic water diverting valve is provided with a hot water inlet 14 and a hot water inlet 2 19 at the same time. The hot water inflow hole 17 and the lower end face of the plunger 5 enter the mixing cavity 15, and the cold water enters the mixing cavity 15 through the cold water inlet 13 and the upper end face of the plunger 5 in turn and mixes with the hot water to form a hot and cold mixed water. The water outlet one 26 or the mixed water outlet two 27 flows out.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (7)

1. A coaxial constant-temperature shunt valve comprises a valve core shell (1), a valve core base (2) and a temperature adjusting handle (3), wherein a stud component (4), a plunger (5), a mandrel component (6), a reset spring (7), a movable sheet (8) and a fixed sheet (9) are sequentially arranged in the valve core shell (1) from top to bottom, the plunger (5) is driven to axially move by rotating the temperature adjusting handle (3) to adjust the outlet water temperature of mixed water, the coaxial constant-temperature shunt valve is characterized in that a movable sheet adjusting seat (10) capable of driving the movable sheet (8) to rotate is further arranged in the valve core shell (1), a movable sheet adjusting knob (11) capable of controlling the movable sheet adjusting seat (10) to rotate is arranged on the valve core shell (1), the movable sheet adjusting knob (11) is driven to rotate by rotating the movable sheet adjusting seat (10) so as to adjust the movable sheet (8) to realize the effect of mixed water diversion, a first sealing element (12) for sealing is arranged between the moving sheet adjusting seat (10) and the valve core shell (1) and at a position close to the plunger (5), a first cold water inlet (13) for cold water to enter is formed in the peripheral wall of the valve core shell (1) and above the first sealing element (12), a first hot water inlet (14) for hot water to enter is formed in the peripheral wall of the valve core shell (1) and below the first sealing element (12), a mixing cavity (15) for a core rod assembly (6) to be installed and for mixing cold and hot water to enable the core rod assembly (6) to sense the temperature is formed in the moving sheet adjusting seat (10), a plurality of cold water inlet holes (16) for cold water to pass through are formed in a position corresponding to the first cold water inlet (13) on the moving sheet adjusting seat (10), a plurality of hot water inlet holes (17) for hot water to flow in are formed in a position corresponding to the first hot water inlet (14) on the moving sheet adjusting seat (10), the hot water mixing valve is characterized in that a plurality of hot water inlet openings (18) for hot water to flow in are correspondingly formed in the moving plate adjusting seat (10) below the hot water inlet hole (17), a second hot water inlet (19) communicated with the hot water inlet openings (18) and allowing hot water to enter is formed in the bottom of the valve core base (2), a plurality of moving plate hot water inlet holes (20) which are circumferentially and uniformly distributed at intervals and allow hot water to enter are formed in the moving plate (8), a first fixed plate hot water inlet hole (21) communicated with the moving plate hot water inlet hole (20) and allowing hot water to enter is symmetrically formed in the fixed plate (9), a platform (22) is formed in the middle of the moving plate (8), a first mixing water outlet hole (23) communicated with the mixing cavity (15) and allowing cold and hot mixed water to flow out is formed in the platform (22), and a second mixing water outlet hole (24) and a mixing water outlet hole (23) communicated with the first mixing water inlet hole (23) and allowing cold and hot mixed water to flow out are formed in the fixed plate (9 A third water hole (25), wherein the bottom of the valve core base (2) is provided with a first mixed water outlet (26) and a second mixed water outlet (27) which are respectively communicated with the second mixed water outlet (24) and the third mixed water outlet (25) for the outflow of cold water mixed water, hot water can enter the mixed cavity (15) through the first hot water inlet (14), the second hot water inflow hole (17) and the lower end surface of the plunger (5) in sequence or can enter the mixed cavity (15) through the second hot water inlet (19), the second stator plate hot water inflow hole (21), the second rotor plate hot water inflow hole (20), the hot water inflow opening (18), the second hot water inflow hole (17) and the lower end surface of the plunger (5) in sequence or simultaneously enter the movable plate adjusting seat (10) from the first hot water inlet (14) and the second hot water inlet (19) and enter the mixed cavity (15) through the lower end surfaces of the first hot water inflow hole (17) and, and cold water sequentially enters the mixing cavity (15) through the cold water inlet (13) and the upper end surface of the plunger (5) to be mixed with hot water to form cold and hot mixed water, and the cold and hot mixed water flows out from the first mixed water outlet (26) or the second mixed water outlet (27).

2. The coaxial constant-temperature water distribution valve according to claim 1, characterized in that the movable plate (8) and the movable plate adjusting seat (10) are jointed to form a first sealing surface (28) which is sealed with each other, and the fixed plate (9) and the valve core base (2) are jointed to form a second sealing surface (29) which is sealed with each other.

3. The coaxial constant-temperature water distribution valve according to claim 1, characterized in that an upwardly protruding boss (30) is arranged on the valve core housing (1) and between the valve core housing and the moving plate adjusting knob (11), and a limiting spring (31) and a limiting bead (32) are arranged in the boss (30).

4. The coaxial constant-temperature water diversion valve according to claim 1, wherein a plurality of strip-shaped protruding parts (34) for enabling the core rod assembly (6) to sense the temperature more fully and improving the temperature accuracy are protruded circumferentially on the inner peripheral wall of the bottom of the moving blade adjusting seat (10).

5. The coaxial constant-temperature water distribution valve according to claim 1, wherein the top of the moving plate adjusting seat (10) is provided with a connecting part (35) protruding towards the inside of the moving plate adjusting knob (11), and the moving plate adjusting knob (11) drives the moving plate adjusting seat (10) to rotate through the connecting part (35) so as to realize the rotation of the moving plate (8).

6. The coaxial constant-temperature water distribution valve according to claim 2, characterized in that a second sealing element (36) for sealing is arranged between the valve core housing (1) and the temperature adjusting handle (3), a plurality of third sealing elements (37) for sealing are arranged between the valve core housing (1) and the moving plate adjusting seat (10) and above the first sealing element (12), a plurality of fourth sealing elements (38) for sealing are arranged on the valve core housing (1), a fifth sealing element (39) for sealing is arranged between the valve core housing (1) and the moving plate adjusting seat (10) and below the first sealing element (12), a plurality of sixth sealing elements (40) for sealing are arranged between the moving plate adjusting seat (10) and the moving plate (8) at positions corresponding to the first sealing surface (28), and a second sealing surface (29) is arranged between the fixed plate (9) and the valve core base (2) The valve core adjusting device comprises a sealing part seven (41) with a sealing function, a plurality of sealing parts eight (42) with a sealing function are arranged at the bottom of the valve core base (2), a sealing part nine (43) with a sealing function is arranged between the plunger (5) and the moving plate adjusting seat (10), an E-shaped snap spring (44) is arranged between the bottom of the temperature adjusting handle (3) and the valve core shell (1), a limiting snap spring (45) is arranged between the valve core shell (1) and the moving plate adjusting knob (11), and a wear-resistant gasket (50) is arranged in the valve core shell (1) and between the valve core shell and the temperature adjusting handle (3).

7. The coaxial constant-temperature water diversion valve according to claim 1, wherein a cold water inlet filter screen (47) is sleeved at a position corresponding to the cold water inlet (13) on the valve core shell (1), a hot water inlet filter screen (48) is sleeved at a position corresponding to the hot water inlet I (14) on the valve core shell (1), and a hot water inlet filter screen II (49) is sleeved at a position corresponding to the hot water inlet II (19) at the bottom of the valve core base (2).

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