CN210153279U

CN210153279U - Coaxial double-control thermostatic valve core

Info

Publication number: CN210153279U
Application number: CN201920366333.4U
Authority: CN
Inventors: 周林; 谭卫亮
Original assignee: Xiamen Panshi Technology Co Ltd
Current assignee: Xiamen Panshi Technology Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-03-17
Anticipated expiration: 2029-03-21

Abstract

The utility model discloses a coaxial double-control thermostatic valve core, which comprises a shell, a base, a movable ceramic chip, a static ceramic chip, a water passing seat, a piston, a thermosensitive element, a water temperature adjusting knob and a flow adjusting knob; the base is matched with the opening at the bottom of the shell; the water passing seat, the movable ceramic chip and the static ceramic chip are sequentially matched in the shell from top to bottom; the water temperature adjusting knob is rotatably arranged in the shell, the upper end of the water temperature adjusting knob extends upwards to form a water temperature adjusting rod penetrating out of the shell, the lower end of the water temperature adjusting knob is in threaded connection with a pushing block, the piston and the thermosensitive element are matched in the mixed water cavity, and the pushing block and the thermosensitive element are in linkage fit with the piston; the flow adjusting knob is rotatably sleeved on the shell and connected with the water passing seat. The utility model discloses can integrative realize temperature regulation and flow control.

Description

Coaxial double-control thermostatic valve core

Technical Field

The utility model relates to a tap valve core field especially indicates a coaxial two accuse constant temperature valve core.

Background

In a thermostatic faucet, a thermostatic valve core is a key part for realizing constant water temperature, but the existing thermostatic valve core can only realize control of water temperature, but not realize control of water outlet flow. If the control of the water outlet flow of the thermostatic faucet needs to be realized, a switch valve core needs to be additionally arranged in the thermostatic faucet in a matched manner with the thermostatic valve core, so that the existing thermostatic faucet is complex in structure, large in size and high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial two accuse constant temperature case, it can realize temperature regulation and flow control.

In order to achieve the above purpose, the solution of the present invention is:

a coaxial double-control thermostatic valve core comprises a shell, a base, a movable ceramic chip, a static ceramic chip, a water passing base, a piston, a thermosensitive element, a water temperature adjusting knob and a flow adjusting knob; the base is matched with the opening at the bottom of the shell, a hot water inlet, a cold water inlet and a mixed water outlet are formed in the base, and the mixed water outlet is positioned in the middle of the base; the water passing seat, the movable ceramic chip and the static ceramic chip are sequentially matched in the shell from top to bottom; the lower end of the static ceramic sheet abuts against the base and is connected with the base, and a first hot water inlet hole, a first cold water inlet hole and a first mixed water outlet hole which respectively correspond to the hot water inlet, the cold water inlet and the mixed water outlet are formed in the static ceramic sheet; the movable ceramic chip is rotatably matched in the shell, the lower end of the movable ceramic chip is abutted against the static ceramic chip, and a second hot water inlet, a second cold water inlet and a second mixed water outlet which respectively correspond to the first hot water inlet, the first cold water inlet and the first mixed water outlet of the static ceramic chip are formed in the movable ceramic chip; the water passing seat is rotatably matched in the shell and connected with the movable ceramic chip, a third mixing water outlet hole is formed in the water passing seat corresponding to the second mixing water outlet hole, and a third hot water inlet hole communicated with the second hot water inlet hole and a third cold water inlet hole communicated with the second cold water inlet hole are formed in the side wall of the third mixing water outlet hole; the water temperature adjusting knob is rotatably arranged in the shell, a water temperature adjusting rod penetrating through the shell extends upwards from the upper end of the water temperature adjusting knob, a pushing block is connected to the lower end of the water temperature adjusting knob in a threaded manner, the pushing block is in circumferential limit fit with the inner wall of the shell, the pushing block is positioned above the water passing seat, and a mixed water cavity is formed among the pushing block, the third mixed water outlet hole, the second mixed water outlet hole, the first mixed water outlet hole and the mixed water outlet hole; the piston can be matched in the mixed water cavity in a vertically moving mode, the side wall of the piston movably blocks the third hot water inlet hole and the third cold water inlet hole, and the piston is provided with a water through hole which penetrates through the piston up and down; a protective spring is arranged between the piston and the pushing block, and the thermosensitive element is matched in the mixed water cavity and is in linkage fit with the piston; the water temperature adjusting knob rotates to drive the pushing block to move up and down, and the pushing block moves up and down to drive the piston to move up and down; the heat-sensitive element stretches due to temperature change, the heat-sensitive element stretches to drive the piston to move up and down, and the piston moves up and down to change the water passing area of the third hot water inlet hole and the water passing area of the third cold water inlet hole; the flow adjusting knob is rotatably sleeved on the shell, the shell is provided with a yielding hole corresponding to the water passing seat, and the flow adjusting knob is connected with the water passing seat through a connecting rod movably penetrating through the yielding hole; the flow adjusting knob rotates to drive the water passing seat and the movable ceramic sheet to rotate, and the movable ceramic sheet rotates to change the water passing area of the second hot water inlet hole and the water passing area of the second cold water inlet hole.

The temperature-sensitive element is a paraffin constant-temperature component, the piston is fixed on the middle of the paraffin constant-temperature component, the protection spring is arranged between the pushing block and the paraffin constant-temperature component from top to bottom, and the reset spring is arranged between the paraffin constant-temperature component and the base from top to bottom.

Promote the piece and seted up a big end down's shoulder hole, the big pore clearance fit of paraffin constant temperature subassembly upper end and shoulder hole, the cooperation of paraffin constant temperature subassembly upper end has a guide, the guide includes the stopper that guide bar and guide bar lower extreme link to each other, the aperture clearance fit of guide bar and shoulder hole, the stopper is located the shoulder hole macropore and the diameter of stopper is greater than the aperture of shoulder hole, the protection spring cover is put the guide bar, the upper and lower both ends of protection spring are supported respectively and are leaned on the ladder face and the stopper of shoulder hole.

A sealing column which protrudes upwards is formed in the middle of the piston, and the sealing column is in sealing fit with the inner wall of the third mixed water outlet hole at a position higher than the third hot water inlet hole and the third cold water inlet hole; the sealing column is provided with a perforation sleeved with the paraffin constant temperature assembly, and the perforation is fixedly connected with the middle part of the paraffin constant temperature assembly and is in sealing fit with the paraffin constant temperature assembly.

The thermosensitive element is a shape memory alloy spring, the upper end and the lower end of the shape memory alloy spring are respectively abutted against the piston and the base, and the upper end and the lower end of the protection spring are respectively abutted against the pushing block and the piston.

And the third hot water inlet hole and the third cold water inlet hole are arranged in a vertically staggered manner.

The shell comprises an upper shell and a lower shell connected with the bottom of the upper shell; the outer diameter of the upper shell is smaller than that of the lower shell, and the inner diameter of the upper shell is smaller than that of the lower shell; the water passing seat, the movable ceramic chip and the static ceramic chip are sequentially matched in the lower shell from top to bottom, the water temperature adjusting knob is rotatably arranged in the upper shell, the water temperature adjusting rod penetrates out of the upper shell upwards, and the pushing block is in circumferential limit matching with the inner wall of the upper shell; the rotatable cover of flow control knob is put go up the casing, the casing top is equipped with down the hole of stepping down, flow control knob bottom links to each other with the connecting rod, and the connecting rod with cross water seat joint.

The upper shell is matched with a snap ring which is abutted against the upper end of the flow adjusting knob.

And sealing rings are arranged between the pushing block and the inner wall of the shell and between the water passing seat and the inner wall of the shell, and sealing gaskets are arranged between the water passing seat and the movable ceramic chip and between the static ceramic chip and the base.

After the scheme is adopted, when the water temperature is required to be adjusted, the water temperature adjusting knob is rotated through the water temperature adjusting rod, the water temperature adjusting knob is rotated to drive the pushing block to move up and down, and the pushing block moves up and down to drive the piston to move up and down to change the water passing area of the third hot water inlet hole and the water passing area of the third cold water inlet hole, so that the water temperature of mixed water in the mixed water cavity is controlled by adjusting the water inlet ratio of cold water and hot water in the mixed water cavity, and the water temperature is adjusted; and after the temperature of the mixed water is adjusted by rotating the water temperature adjusting knob, if the temperature or the flow of the hot water and the cold water entering the mixed water cavity is changed, the temperature of the mixed water in the mixed water cavity is changed, at the moment, the thermosensitive element can be changed by the temperature of the mixed water in the mixed water cavity and stretches, the thermosensitive element stretches and retracts to drive the piston to move up and down so as to change the water passing area of the third hot water inlet hole and the water passing area of the third cold water inlet hole, and therefore the cold water and hot water inlet proportion of the mixed water cavity is automatically adjusted to ensure that the temperature of the mixed water in the mixed water cavity is constant. When flow adjustment is needed, the flow adjusting knob is rotated, the flow adjusting knob drives the water passing seat and the movable ceramic sheet to rotate, the movable ceramic sheet rotates to change the overlapping area of the second hot water inlet hole and the second cold water inlet hole of the movable ceramic sheet and the first hot water inlet hole and the first cold water inlet hole of the static ceramic sheet, so that the water passing area of the second hot water inlet hole and the water passing area of the second cold water inlet hole are changed, the flow of the second hot water inlet hole and the second cold water inlet hole is changed to adjust the total water inlet flow of the mixed water cavity so as to adjust the water outlet flow of the first mixed water outlet, and flow adjustment is achieved.

Therefore, the utility model discloses can integrative realize temperature regulation and flow control, temperature adjust knob's rotation and flow control knob's rotation do not interfere with each other moreover.

Drawings

Fig. 1 is an exploded view of a first embodiment of the present invention;

fig. 2 is a perspective view of a first embodiment of the present invention;

fig. 3 is a cross-sectional view of a first embodiment of the present invention;

fig. 4 is a sectional view of a second embodiment of the present invention.

Description of reference numerals:

the shell 1, the upper shell 11, the limit clamping groove 111, the clamping ring 112, the annular groove 113, the lower shell 12, the clamping hole 121, the abdicating hole 122,

a base 2, a hot water inlet 21, a cold water inlet 22, a mixed water outlet 23, a claw 24,

a movable ceramic chip 3, a second hot water inlet hole 31, a second cold water inlet hole 32, a second mixed water outlet hole 33, a limiting notch groove 34,

the static ceramic chip 4, the first hot water inlet hole 41, the first cold water inlet hole 42, the first mixed water outlet hole 43, the limiting notch 44,

a water passing seat 5, a chuck 501, a water passing seat 502, a third hot water inlet 51, a third cold water inlet 52, a third mixed water outlet 53, a limit bump 54, a bayonet 55,

the piston 6, the water passing hole 61, the sealing post 62, the perforation 621,

a thermosensitive element 7, a paraffin constant temperature component 71, a guide part 711, a guide rod 7111, a limit block 7112,

a water temperature adjusting knob 8, a water temperature adjusting rod 81, a pushing block 82, a limiting fixture block 821, a stepped hole 822,

the flow rate adjusting knob 9, the connecting rod 91,

the device comprises a mixed water cavity A, a protection spring T1, a return spring T2, a sealing ring a and a sealing gasket b.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 3, in the present embodiment, the coaxial dual-control thermostatic valve core includes a housing 1, a base 2, a movable ceramic sheet 3, a static ceramic sheet 4, a water passing seat 5, a piston 6, a thermal element 7, a water temperature adjusting knob 8 and a flow rate adjusting knob 9.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, at least two fastening holes 121 are formed on the housing 1; be equipped with the jack catch 24 with card hole 121 joint on base 2 and cooperate base 2 on the opening of casing 1 bottom, set up hot water inlet 21, cold water inlet 22 and mixed delivery port 23 on base 2, mixed delivery port 23 is located base 2 middle part.

As shown in fig. 1 and fig. 3, in this embodiment, the water passing seat 5, the movable ceramic piece 3 and the static ceramic piece 4 are sequentially fitted into the casing 1 from top to bottom, wherein the lower end of the static ceramic piece 4 abuts against the base 2, the static ceramic piece 4 is provided with a first hot water inlet 41, a first cold water inlet 42 and a first mixed water outlet 43 which respectively correspond to the hot water inlet 21, the cold water inlet 22 and the mixed water outlet 23, and the static ceramic piece 4 is provided with a limit notch 44 for clamping the jaw 23 of the base 2 so as to connect the static ceramic piece 4 with the base 2; the movable ceramic chip 3 is rotatably matched in the shell 1, the lower end of the movable ceramic chip 3 is abutted against the static ceramic chip 4, a second hot water inlet hole 31, a second cold water inlet hole 32 and a second mixed water outlet hole 33 which respectively correspond to the first hot water inlet hole 41, the first cold water inlet hole 42 and the first mixed water outlet hole 43 of the static ceramic chip 4 are formed in the movable ceramic chip 3, and a limiting notch 34 is formed in the upper end of the movable ceramic chip 3; the water passing seat 5 is rotatably matched in the shell 1, and the water passing seat 5 is formed by splicing a chuck 501 and a water passing seat 502 up and down; the bottom of the water passing seat 5 is provided with a limiting bump 54 matched with the limiting notch 34 of the movable ceramic piece 3, the water passing seat 5 is connected with the movable ceramic piece 3 through the matching of the limiting notch 34 and the limiting bump 54, the water passing seat 5 is provided with a third mixed water outlet 53 corresponding to the second mixed water outlet 33, the side wall of the third mixed water outlet 53 of the water passing seat 5 is provided with a third hot water inlet 51 communicated with the second hot water inlet 31 and a third cold water inlet 52 communicated with the second cold water inlet 32, and the third hot water inlet 51 and the third cold water inlet 52 are arranged in a vertically staggered manner.

As shown in fig. 1 and fig. 3, in this embodiment, the water temperature adjusting knob 8 is rotatably installed in the housing 1, the upper end of the water temperature adjusting knob 8 extends upward to form a water temperature adjusting rod 81 penetrating through the housing 1, the lower end of the water temperature adjusting knob 8 is in threaded connection with a pushing block 82 capable of moving up and down and being matched in the housing 1, a limiting block 821 is arranged on the side wall of the pushing block 82, and a limiting slot 111 for the limiting block 821 to be clamped is arranged on the inner wall of the housing 1, so that the pushing block 82 is in circumferential limiting fit with the inner wall of the housing 1; the pushing block 82 is positioned above the water passing seat 5, and a mixed water cavity A is formed among the pushing block 82, the third mixed water outlet 53, the second mixed water outlet 33, the first mixed water outlet 43 and the mixed water outlet 23; the piston 6 can be matched in the mixed water cavity A in a vertically moving mode, the side wall of the piston 6 is movably plugged with a third hot water inlet hole 51 and a third cold water inlet hole 52, and a water passing hole 61 which penetrates through the piston 6 up and down is formed in the piston; a protection spring T1 is arranged between the piston 6 and the pushing block 82, and the thermosensitive element 7 is matched in the mixed water cavity A and is in linkage fit with the piston 6; the water temperature adjusting knob 8 rotates to drive the pushing block 82 to move up and down, and the pushing block 82 moves up and down to drive the piston 6 to move up and down; the thermosensitive element 7 stretches due to temperature change, the thermosensitive element 7 stretches to drive the piston 6 to move up and down, and the piston 6 moves up and down to change the water passing area of the third hot water inlet hole 51 and the water passing area of the third cold water inlet hole 52, so that the water temperature of mixed water in the mixed water cavity A is controlled by adjusting the hot water and cold water inlet proportion of the mixed water cavity A, and the water temperature is adjusted.

As shown in fig. 1 and fig. 3, in this embodiment, the thermosensitive element 7 is a paraffin thermostatic assembly 71, the piston 6 is fixed on the middle of the paraffin thermostatic assembly 71 in a threaded connection manner, the protection spring T1 is arranged between the pushing block 82 and the paraffin thermostatic assembly 71, and a return spring T2 is arranged between the paraffin thermostatic assembly 71 and the base 2, so that the pushing block 8 moves up and down to drive the paraffin thermostatic assembly 71 to move up and down, and the paraffin thermostatic assembly 71 moves up and down to drive the piston 6 fixed on the paraffin thermostatic assembly 71 to move up and down; when the paraffin constant temperature component 71 expands and contracts due to temperature change, the expansion and contraction of the paraffin constant temperature component 71 can drive the piston 6 fixed on the paraffin constant temperature component 71 to move up and down; for guaranteeing that paraffin constant temperature subassembly 71 does not squint and guarantee that protection spring T1 does not squint when reciprocating, promote piece 82 and seted up big shoulder hole 822 about one, the big pore clearance fit of paraffin constant temperature subassembly 71 upper end and shoulder hole 822, the cooperation of paraffin constant temperature subassembly 71 upper end has a guide 711, guide 711 includes the stopper 7112 that guide bar 7111 and guide bar 7111 lower extreme link to each other, the aperture clearance fit of guide bar 7111 and shoulder hole 822, stopper 71112 are located the shoulder hole 822 macropore and stopper 71112's diameter is greater than the aperture of shoulder hole 822 in order to restrict guide 711 in shoulder hole 822, protection spring T1 sets up guide bar 7111, the upper and lower both ends of protection spring T1 lean on the ladder face and the stopper 822 of shoulder hole 822 respectively. It should be noted that the piston 6 is not limited to be fixed on the middle of the paraffin wax constant temperature assembly 71 in a threaded connection manner, and the piston 6 may also be fixed on the middle of the paraffin wax constant temperature assembly 71 in a clamping or bonding manner; the paraffin thermostat assembly 71 is also known in the art and will not be described in detail herein.

As shown in fig. 1 and fig. 3, in this embodiment, the flow rate adjusting knob 9 is rotatably sleeved on the housing 1, the housing 1 is provided with a yielding hole 122 corresponding to the water passing seat, and the flow rate adjusting knob 9 is connected to the water passing seat 5 through a movable connecting rod 91 penetrating through the yielding hole 122; the flow adjusting knob 9 rotates to drive the water passing seat 5 and the movable ceramic piece 3 to rotate, the movable ceramic piece 3 rotates to change the water passing area of the second hot water inlet hole 31 and the water passing area of the second cold water inlet hole 32, and further the flow of the second hot water inlet hole 31 and the flow of the second cold water inlet hole 32 are changed to adjust the total water inlet flow of the mixed water cavity A, so that the water outlet flow of the first mixed water outlet 23 is adjusted, and the flow adjustment is realized. In this embodiment, the housing 1 may include an upper housing 11 and a lower housing 12 connected to the bottom of the upper housing 11, the upper housing 11 and the lower housing 12 may be integrally formed, the outer diameter of the upper housing 11 is smaller than the outer diameter of the lower housing 12, the inner diameter of the upper housing 11 is smaller than the inner diameter of the lower housing 12, the water passing seat 5, the movable tiles 3 and the static tiles 4 are sequentially fitted into the lower housing 12 from top to bottom, the water temperature adjusting knob 8 is rotatably installed in the upper housing 11, the water temperature adjusting rod 81 penetrates the upper housing 11 upward, and the inner wall of the upper housing 11 is provided with the limiting clamping groove 111 so that the pushing block 82 is in circumferential limiting fit with the inner wall of the upper housing 11; the flow adjusting knob 9 is rotatably sleeved on the upper shell 11, the bottom of the flow adjusting knob 9 is connected with the connecting rod 91, the top of the lower shell 12 is provided with the abdicating hole 122, the abdicating hole 122 is of an arc structure, and the water passing seat 5 is provided with a bayonet 55 for clamping the lower end of the connecting rod 91 so that the connecting rod 91 is clamped with the water passing seat 5; in order to prevent the flow adjusting knob 9 from falling off, the upper shell 11 is matched with a snap ring 112 abutting against the upper end of the flow adjusting knob 9, and the upper shell 11 is provided with an annular groove 113 for clamping the snap ring 112. It should be noted that the receding hole 122 is not limited to be formed in the top of the lower casing 12, and the receding hole 122 may also be formed in a position, opposite to the water passing seat 5, on the side wall of the casing 1 directly along the circumferential direction of the casing 1.

In order to ensure the water tightness, as shown in fig. 1 and 3, in this embodiment, sealing rings a are respectively disposed between the pushing block 82 and the inner wall of the housing 1 and between the water passing seat 5 and the inner wall of the housing 1, and sealing gaskets b are respectively disposed between the water passing seat 5 and the movable ceramic sheet 3 and between the static ceramic sheet 4 and the base 2. Further, in this embodiment, an upward convex sealing post 62 may be formed in the middle of the piston 6, and the sealing post 62 is in sealing fit with the inner wall of the third mixing water outlet hole 53 at a position higher than the third hot water inlet hole 51 and the third cold water inlet hole 52; the sealing column 62 is provided with a perforation 621 sleeved with the paraffin thermostatic assembly 71, and the perforation 621 is fixedly connected with the middle part of the paraffin thermostatic assembly 71 in a sealing fit manner, so that water flow entering the third mixing water outlet hole 53 cannot flow onto the pushing block 82 to be contacted with the pushing block 82, and the pushing block 82 can be prevented from being corroded by the water flow; the perforation 621 can be provided with an internal thread, and the middle part of the paraffin constant temperature component 71 is provided with an external thread matched with the internal thread of the perforation 621, so that the perforation 621 and the middle part of the paraffin constant temperature component 71 are fixedly connected and matched in a sealing way in a threaded connection way; and a sealing ring a is arranged between the sealing column 62 and the inner wall of the third mixing water outlet hole 53 at a position higher than the third hot water inlet hole 51 and the third cold water inlet hole 52.

When water temperature adjustment is needed, the water temperature adjusting knob 8 is rotated through the water temperature adjusting rod 81, the water temperature adjusting knob 8 is rotated to drive the pushing block 82 to move up and down, and the pushing block 82 moves up and down to drive the piston 6 to move up and down to change the water passing area of the third hot water inlet 51 and the water passing area of the third cold water inlet 52, so that the water inlet ratio of cold water and hot water in the mixed water cavity A is adjusted to control the water temperature of the mixed water in the mixed water cavity A, and the water temperature adjustment is realized; and after the temperature of the mixed water is adjusted by rotating the water temperature adjusting knob 8, if the temperature or the flow of the hot water and the cold water entering the mixed water cavity A is changed, the temperature of the mixed water in the mixed water cavity A is changed, at the moment, the heat sensitive element 7 can stretch and retract by the change of the temperature of the mixed water in the mixed water cavity A, and the heat sensitive element 7 stretches and retracts to drive the piston 6 to move up and down so as to change the water passing area of the third hot water inlet hole 51 and the water passing area of the third cold water inlet hole 52, so that the water temperature of the mixed water in the mixed water cavity A is ensured to be constant by automatically adjusting the water inlet ratio of the cold water and the hot water in the mixed water cavity.

When the flow adjustment is needed, the flow adjustment knob 9 is rotated, the flow adjustment knob 9 drives the water passing seat 5 and the movable ceramic piece 3 to rotate, the movable ceramic piece 3 rotates to change the overlapping area of the second hot water inlet hole 31 and the second cold water inlet hole 32 of the movable ceramic piece 3 and the first hot water inlet hole 41 and the first cold water inlet hole 42 of the static ceramic piece 4, so that the water passing area of the second hot water inlet hole 31 and the water passing area of the second cold water inlet hole 32 are changed, the flow of the second hot water inlet hole 31 and the flow of the second cold water inlet hole 32 are changed to adjust the total water inlet flow of the mixed water cavity a so as to adjust the water outlet flow of the first mixed water outlet 23, and the flow adjustment is realized.

Example two:

as shown in fig. 4, the main difference between the present embodiment and the first embodiment is the difference between the thermosensitive element 7 and the fitting relationship between the piston 6 and the thermosensitive element 7.

Specifically, as shown in fig. 4, in the present embodiment, the thermosensitive element 7 is a shape memory alloy spring 72, the upper end and the lower end of the shape memory alloy spring 72 respectively abut against the piston 6 and the base 2, and the upper end and the lower end of the protection spring T1 respectively abut against the pushing block 82 and the piston 6, so that the pushing block 82 moves up and down to drive the piston 6 to move up and down; when the shape memory alloy spring 72 expands and contracts due to temperature change, the expansion and contraction of the shape memory alloy spring 72 drives the piston 6 to move up and down.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. A coaxial double-control thermostatic valve core is characterized in that: comprises a shell, a base, a movable ceramic chip, a static ceramic chip, a water passing base, a piston, a thermosensitive element, a water temperature adjusting knob and a flow adjusting knob;

the base is matched with the opening at the bottom of the shell, a hot water inlet, a cold water inlet and a mixed water outlet are formed in the base, and the mixed water outlet is positioned in the middle of the base;

the water passing seat, the movable ceramic chip and the static ceramic chip are sequentially matched in the shell from top to bottom; the lower end of the static ceramic sheet abuts against the base and is connected with the base, and a first hot water inlet hole, a first cold water inlet hole and a first mixed water outlet hole which respectively correspond to the hot water inlet, the cold water inlet and the mixed water outlet are formed in the static ceramic sheet; the movable ceramic chip is rotatably matched in the shell, the lower end of the movable ceramic chip is abutted against the static ceramic chip, and a second hot water inlet, a second cold water inlet and a second mixed water outlet which respectively correspond to the first hot water inlet, the first cold water inlet and the first mixed water outlet of the static ceramic chip are formed in the movable ceramic chip; the water passing seat is rotatably matched in the shell and connected with the movable ceramic chip, a third mixing water outlet hole is formed in the water passing seat corresponding to the second mixing water outlet hole, and a third hot water inlet hole communicated with the second hot water inlet hole and a third cold water inlet hole communicated with the second cold water inlet hole are formed in the side wall of the third mixing water outlet hole;

the water temperature adjusting knob is rotatably arranged in the shell, a water temperature adjusting rod penetrating through the shell extends upwards from the upper end of the water temperature adjusting knob, a pushing block is connected to the lower end of the water temperature adjusting knob in a threaded manner, the pushing block is in circumferential limit fit with the inner wall of the shell, the pushing block is positioned above the water passing seat, and a mixed water cavity is formed among the pushing block, the third mixed water outlet hole, the second mixed water outlet hole, the first mixed water outlet hole and the mixed water outlet hole; the piston can be matched in the mixed water cavity in a vertically moving mode, the side wall of the piston movably blocks the third hot water inlet hole and the third cold water inlet hole, and the piston is provided with a water through hole which penetrates through the piston up and down; a protective spring is arranged between the piston and the pushing block, and the thermosensitive element is matched in the mixed water cavity and is in linkage fit with the piston; the water temperature adjusting knob rotates to drive the pushing block to move up and down, and the pushing block moves up and down to drive the piston to move up and down; the heat-sensitive element stretches due to temperature change, the heat-sensitive element stretches to drive the piston to move up and down, and the piston moves up and down to change the water passing area of the third hot water inlet hole and the water passing area of the third cold water inlet hole;

the flow adjusting knob is rotatably sleeved on the shell, the shell is provided with a yielding hole corresponding to the water passing seat, and the flow adjusting knob is connected with the water passing seat through a connecting rod movably penetrating through the yielding hole; the flow adjusting knob rotates to drive the water passing seat and the movable ceramic sheet to rotate, and the movable ceramic sheet rotates to change the water passing area of the second hot water inlet hole and the water passing area of the second cold water inlet hole.

2. A coaxial dual control thermostatic valve cartridge according to claim 1, wherein: the temperature-sensitive element is a paraffin constant-temperature component, the piston is fixed on the middle of the paraffin constant-temperature component, the protection spring is arranged between the pushing block and the paraffin constant-temperature component from top to bottom, and the reset spring is arranged between the paraffin constant-temperature component and the base from top to bottom.

3. A coaxial dual control thermostatic valve cartridge according to claim 2, wherein: promote the piece and seted up a big end down's shoulder hole, the big pore clearance fit of paraffin constant temperature subassembly upper end and shoulder hole, the cooperation of paraffin constant temperature subassembly upper end has a guide, the guide includes the stopper that guide bar and guide bar lower extreme link to each other, the aperture clearance fit of guide bar and shoulder hole, the stopper is located the shoulder hole macropore and the diameter of stopper is greater than the aperture of shoulder hole, the protection spring cover is put the guide bar, the upper and lower both ends of protection spring are supported respectively and are leaned on the ladder face and the stopper of shoulder hole.

4. A coaxial dual-control thermostatic valve cartridge according to claim 2 or 3, wherein: a sealing column which protrudes upwards is formed in the middle of the piston, and the sealing column is in sealing fit with the inner wall of the third mixed water outlet hole at a position higher than the third hot water inlet hole and the third cold water inlet hole; the sealing column is provided with a perforation sleeved with the paraffin constant temperature assembly, and the perforation is fixedly connected with the middle part of the paraffin constant temperature assembly and is in sealing fit with the paraffin constant temperature assembly.

5. A coaxial dual control thermostatic valve cartridge according to claim 1, wherein: the thermosensitive element is a shape memory alloy spring, the upper end and the lower end of the shape memory alloy spring are respectively abutted against the piston and the base, and the upper end and the lower end of the protection spring are respectively abutted against the pushing block and the piston.

6. A coaxial dual control thermostatic valve cartridge according to claim 1, wherein: and the third hot water inlet hole and the third cold water inlet hole are arranged in a vertically staggered manner.

7. A coaxial dual control thermostatic valve cartridge according to claim 1, wherein: the shell comprises an upper shell and a lower shell connected with the bottom of the upper shell; the outer diameter of the upper shell is smaller than that of the lower shell, and the inner diameter of the upper shell is smaller than that of the lower shell; the water passing seat, the movable ceramic chip and the static ceramic chip are sequentially matched in the lower shell from top to bottom, the water temperature adjusting knob is rotatably arranged in the upper shell, the water temperature adjusting rod penetrates out of the upper shell upwards, and the pushing block is in circumferential limit matching with the inner wall of the upper shell; the rotatable cover of flow control knob is put go up the casing, the casing top is equipped with down the hole of stepping down, flow control knob bottom links to each other with the connecting rod, and the connecting rod with cross water seat joint.

8. A coaxial dual control thermostatic valve cartridge according to claim 7, wherein: the upper shell is matched with a snap ring which is abutted against the upper end of the flow adjusting knob.

9. A coaxial dual control thermostatic valve cartridge according to claim 1, wherein: and sealing rings are arranged between the pushing block and the inner wall of the shell and between the water passing seat and the inner wall of the shell, and sealing gaskets are arranged between the water passing seat and the movable ceramic chip and between the static ceramic chip and the base.