CN210240660U - Anti-water-crossing constant-temperature faucet - Google Patents

Abstract

The utility model discloses a prevent running water thermostatic faucet, including the casing, install thermostatic cartridge, two accuse switch valve cores and switch valve core case in the casing, switch valve core case department is provided with a plurality of intercommunication passageways between thermostatic cartridge and two accuse switch valve cores in the switch valve core case, and the water route between two accuse switch valve cores and the thermostatic cartridge is switched on through the intercommunication passageway on the switch valve core case realization. The anti-water-crossing constant-temperature faucet is simple in overall structure and convenient to machine and assemble.

Description

Anti-water-crossing constant-temperature faucet

Technical Field

The utility model relates to a bathroom equipment, in particular to prevent running water constant temperature tap.

Background

The constant temperature faucet is a bathroom device for controlling the water outlet temperature and the water outlet flow, and can automatically adjust the mixing ratio of cold water and hot water, so that the water outlet temperature is kept constant, and the constant temperature faucet is more and more widely used. The pipeline type thermostatic faucet is integrally and transversely arranged, and the thermostatic valve core and the double-control switch valve core are respectively positioned at two ends of the shell, so that the pipeline type thermostatic faucet is small in size, simple and attractive, and is increasingly used in high-end places. In order to prevent the problem of water leakage when the thermostatic valve core is not used, the double-control switch valve core is required to be used for simultaneously controlling cold water inflow or cold water inflow, mixed water outflow or hot water inflow and mixed water outflow. Due to the structural characteristics of the pipeline type thermostatic faucet, at least three or more flow channels which are arranged side by side exist in the pipeline type thermostatic faucet, and the three flow channels are not located on the same plane.

For example, chinese patent No. 201510537858.6 discloses a thermostatic faucet with two-way water outlet, which can effectively prevent the water mixing phenomenon of a thermostatic valve core and control the water outlet flow. The thermostatic faucet comprises a shell and a main valve body, wherein a thermostatic valve core is installed at one end of the main valve body, a water distribution valve core is installed at the other end of the main valve body, a plurality of flow channels are arranged between two ends of the main valve body side by side and are not straight holes and used for communicating the thermostatic valve with the water distribution valve core (as shown in figure 1, 5 flow channels arranged along the axis direction are arranged on a radial section at most simultaneously, and the flow channels are not located on the same axial plane). The main valve body is difficult to process because the plurality of flow passages are arranged side by side, overlapped and not positioned on the same plane. And (5) processing by using a pouring method. When the injection molding method is used for processing, the two groups of core rods need to penetrate into the main valve body from two ends of the main valve body and are spliced to form a flow channel, the requirements on the precision of the mold and the core rods are high, and the processing is troublesome. When the pouring method is used for machining, a sand core is needed, the multiple flow channels are arranged side by side and are not located on the same plane, so that the integral sand core cannot be adopted, otherwise, the sand core cannot be manufactured, and the multiple sand cores are needed to be spliced.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a prevent constant temperature faucet that cluster, overall structure is comparatively simple, and processing is comparatively convenient.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a prevent running water thermostatic faucet, includes the casing, installs thermostatic cartridge, two accuse switch valve cores in the casing, is provided with first inlet channel, second inlet channel and first outlet channel on the casing, and casing one end is provided with intake antrum one, intake antrum two and mixes out the water cavity, and the casing other end is provided with switch valve core chamber, and thermostatic cartridge inserts and establishes intake antrum one, intake antrum two and mix out the water intracavity, two accuse switch valve core installation switch valve core intracavity, its characterized in that: a switch valve core seat is arranged between the thermostatic valve core and the double-control switch valve core, a first water inlet cavity is connected with a first water inlet channel, the double-control switch valve core comprises a second water inlet, a second water outlet, a mixed water inlet and a mixed water first outlet, the second water inlet channel is communicated with the second water inlet on the double-control switch valve core, a second water passing cavity and a second water passing channel are arranged on the shell, the second water passing channel is communicated with the second water passing cavity and a second water inlet cavity, the bottom surface of the double-control switch valve core is in abutting seal with the end surface of one end of the switch valve core seat, a first communicating channel, a second communicating channel and a third communicating channel are arranged on the switch valve core seat, one end of the first communicating channel is positioned on the end surface of the switch valve core seat and is connected with the second water; the second communication channel penetrates through two end faces of the switch valve core seat and communicates the mixed water inlet and the mixed water outlet cavity; and one end of the communication channel is positioned on the end surface of the switch valve core seat and is communicated with the first mixed water outlet, and the other end of the communication channel is communicated with the first water outlet cavity.

Through the technical scheme, the switch valve core seat is arranged in the shell, and the switch valve core seat and the shell are arranged in a split mode, so that the two components can be conveniently machined. The first communication channel and the third communication channel which are communicated with the thermostatic valve element and the double-control switch valve element and the second communication channel and the first water outlet cavity are all arranged on the switch valve element seat, so that only one second national tax channel is axially arranged in the shell, the internal structure of the shell is simplified, the shell can be formed by pouring metals such as copper, the strength is higher, the service life is longer, and the corrosion resistance and the ageing resistance are better.

The first communication channel, the second communication channel and the third communication channel are independently arranged on the valve core seat, one end of the communication channel is communicated with the end face of the outer side of the switch valve core seat, and the other end of the communication channel is communicated with the first water passing cavity, the first water outlet cavity or the mixed water outlet cavity. The switch valve core seat can be manufactured by injection molding, and the inner communication channel is simple, so that the core can be pulled from one end of the switch valve core seat, and the switch valve core seat is convenient to process. Meanwhile, the switch valve core seat can be processed in a casting mode, or a metal bar is used for processing the communicating channel through drilling.

The thermostatic valve core can use a temperature bulb which takes paraffin as temperature sensing material as a temperature sensing element, and can also use a spring which is made of memory alloy as a temperature sensing element. When the temperature bulb is used as a temperature sensing element, cold water enters the first water inlet area of the thermostatic valve core, hot water enters the second water inlet area, and mixed water flows out from the lower end of the thermostatic valve core. When a spring made of memory alloy is used as a temperature sensing element, hot water enters a first water inlet area of the thermostatic valve core, and cold water enters a second water inlet area of the thermostatic valve core.

Preferably, the second water inlet is arranged on the side surface of the double-control switch valve core, and the second water inlet channel is communicated with the switch valve core cavity; or the second water inlet is arranged on the bottom surface of the double-control switch valve core, a second water inlet cavity is arranged in the shell and communicated with a second water inlet channel, a communication channel IV is arranged in the switch valve core seat and communicated with the second water inlet cavity and the second water inlet.

Through the technical scheme, when the switch valve core cavity is directly communicated with the second water inlet channel, the double-control switch valve core arranged on the side face can be used through one water inlet, so that one water path can directly enter the double-control switch valve core from the side face of the double-control switch valve core, the second water inlet cavity is not required to be arranged in the shell, and the number of the communication channels in the switch valve core seat can be reduced.

Meanwhile, a double-control switch valve core with two water inlets arranged on the bottom surface can be used, for example, a double-path synchronous switch throttling valve core with the patent number of 201710190716.6, wherein two paths of inlet water are all fed from the bottom surface of the valve core, then pass through a valve plate in the double-control switch valve core, are discharged from the bottom surface, and then flow to corresponding cavities through a communication channel.

Preferably, the shell is further provided with a second water outlet channel, a second water outlet cavity communicated with the second water outlet channel is arranged in the shell, the switch valve core seat is provided with a communication channel five, the bottom surface of the double-control switch valve core is provided with a mixed water second water outlet, and the communication channel five is connected with the second water outlet cavity and the mixed water second water outlet.

Through the technical scheme, the second water outlet channel, the second water outlet cavity and the communication channel V are arranged to realize double-path water outlet, and at the moment, the double-control switch valve core with the water distribution function can be used as the double-control switch valve core, such as the double-path water outlet ceramic valve core disclosed by the embodiment in patent number 201510538006.9 produced by the company. Correspondingly, when the two water inlets are arranged on the bottom surface of the double-control switch valve core, the water diversion valve core which can bear high pressure and is disclosed in the embodiment of patent No. 201711035947.6 produced by the company can be used, so that the pressure bearing capacity of the double-control switch valve core is improved.

Preferably, the first water outlet cavity and the second water outlet cavity are positioned between the second water passing cavity and the mixing water outlet cavity, and the second water passing channel is positioned outside the first water outlet cavity and the second water outlet cavity.

Through the technical scheme, the second water passing channel is arranged in such a way, so that the interference between the second water passing channel and the first water outlet cavity, the second water outlet cavity and the mixed water outlet cavity can be avoided, and the influence on the installation of the valve core seat can be avoided.

Preferably, the outer side of the switch valve core seat is provided with a plurality of sealing convex rings, and the sealing convex rings are in sealing fit with the shells on two sides of the mixing water outlet cavity of the water inlet cavity II, the second water passing cavity, the first water outlet cavity and the second water outlet cavity.

Through the technical scheme, leakage between two adjacent cavities outside the switch valve core seat can be avoided. The sealing convex ring can be provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove, so that the sealing effect is further improved.

Preferably, an overflowing groove is formed between every two adjacent sealing convex rings, and the first communicating channel and the third communicating channel are respectively communicated with one overflowing groove.

Through the technical scheme, the arrangement of the overflowing grooves enables the opening at one end, communicated with each cavity, of the communicating channel to be larger. When the valve core seat is processed in a casting mode, the overflowing groove can be formed by arranging a convex block on the sand mold. When the valve core seat is manufactured by using bar stock machining, the flow passage groove may be formed by drilling or milling the side of the valve core seat.

Preferably, the first communication channel, the second communication channel and the third communication channel are straight holes and are arranged along the axial direction of the switch valve core seat.

Through the technical scheme, the communication channel is a straight hole, the radial section is consistent in size, and the communication channel can be conveniently machined along the axial direction of the switch valve core seat.

Preferably, a shunt valve is installed on the first water outlet channel and/or the second water outlet channel, a swing nozzle is sleeved on the outer side of the shunt valve and circumferentially fixed with a shunt valve handle, a first shunt outlet is formed in the side face of the swing nozzle, and a second shunt outlet is formed in the lower end of the swing nozzle.

Through the technical scheme, the swinging nozzle can form another water outlet on the first water outlet channel or the second water outlet channel, so that three-way water outlet or four-way water outlet is realized. The water outlet switching between the two water distribution ports can be conveniently realized through the water distribution valve core. The water distribution valve core is a universal accessory in industry and can be directly purchased and obtained.

Preferably, a positioning part for axially positioning the switch valve core seat is arranged in the shell.

Through the technical scheme, the setting of the positioning piece and the positioning part can be determined by the radial position of the valve core seat, so that the switch valve core and the switch valve core seat can be tightly supported, and meanwhile, the sealing convex ring can be just positioned between two adjacent cavities.

Preferably, the second water passing channel is close to one side of the back surface of the shell.

Through above-mentioned technical scheme, the second water channel sets up in this department, and when tap installed on the wall, towards wall one side, even the second water channel internal flow be hot water, also difficult emergence scald accident.

Compared with the prior art, the beneficial effects of the utility model are that: through set up the switch valve core case in the casing, thereby set up the overall structure of intercommunication passageway simplification casing in the switch valve core, make things convenient for the casting processing of casing. Meanwhile, the plurality of separated cavities are formed in the shell, so that only the communicating channel for communicating the double-control switch valve core and different cavities is needed to be formed in the switch valve core seat, the whole structure of the switch valve core seat is simple, the switch valve core seat is convenient to machine, and the switch valve core seat can be machined in various modes.

Drawings

FIG. 1 is an exploded view of an embodiment;

FIG. 2 is a schematic cross-sectional view of the housing in a horizontal direction according to the first embodiment;

FIG. 3 is a schematic longitudinal cross-sectional view of a housing according to one embodiment;

FIG. 4 is a perspective cross-sectional view of the housing according to the first embodiment;

FIG. 5 is a first perspective view of the first switching valve cartridge according to the first embodiment;

FIG. 6 is a second perspective view of the valve core seat of the first embodiment;

FIG. 7 is an end elevational view of the switching valve cartridge in accordance with one embodiment;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 10 is a perspective view of the dual control switch valve cartridge;

FIG. 11 is a first cross-sectional perspective view of the first switching valve cartridge of the first embodiment when installed in a housing;

FIG. 12 is a second cross-sectional perspective view of the switch valve cartridge of the first embodiment when mounted in a housing;

FIG. 13 is a sectional view of a rocking nozzle in the first embodiment;

FIG. 14 is a schematic horizontal sectional view of the case according to the second embodiment;

FIG. 15 is an exploded view of the dual switch valve cartridge of the second embodiment;

FIG. 16 is a perspective view of a movable valve plate of a dual-control switch valve core according to a second embodiment;

FIG. 17 is a perspective view of a valve core fixed plate of the dual-control switch according to the second embodiment.

Reference numerals: 1. a housing; 2. a thermostatic valve core; 3. a dual-control switch valve core; 4. a first water inlet channel; 5. a second water inlet channel; 6. a first water outlet channel; 7. a switch valve core seat; 8. a first water inlet cavity; 9. a second water inlet cavity; 10. a mixing water outlet cavity; 11. a second water inlet; 12. a second water outlet; 13. a mixed water inlet; 14. a mixed water first outlet; 15. a mixed water second outlet; 16. a second water passing cavity; 17. a second water passage; 18. a switch valve core cavity; 19. a first communication channel; 20. a second communication channel; 21. a third communication channel; 22. a second water outlet channel; 23. a second water outlet cavity; 24. a fifth communication channel; 25. a communication channel IV; 26. a second water inlet cavity; 27. a first water outlet cavity; 28. a sealing convex ring; 29. an overcurrent groove; 30. a water diversion valve core; 31. swinging the nozzle; 32. a first water diversion outlet; 33. a second water diversion outlet; 34. a positioning member; 35. a positioning part; 36. a seal ring groove; 37. fixing the joint; 38. a gland; 39. a hand wheel; 40. a housing; 41. a movable valve plate; 42. a fixed valve plate; 43. a water inlet; 44. a water outlet hole; 45. and (7) a water outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment one, a prevent running water constant temperature tap

As shown in fig. 1, the anti-water-crossing constant temperature faucet comprises a shell 1, a constant temperature valve core 2 and a double control switch valve core 3 are respectively installed at two ends of the shell 1, and a switch valve core seat 7 is installed inside the shell 1 between the constant temperature valve core 2 and the double control switch valve core 3. The thermostatic valve core 2 is fixed at one end of the shell 1 through a thread on the side surface, a gland 38 is arranged on the outer side of the double-control switch valve core 3, and the gland 38 compresses the double-control switch valve core 3 and the switch valve core seat 7 in the shell 1. The handles of the double-control switch valve core 3 and the thermostatic valve core 2 are provided with hand wheels 39 which are used for controlling the communication state of the double-control switch valve core 3 and setting the water outlet temperature of the thermostatic valve core 2.

As shown in fig. 2 to 3, a first water inlet channel 4 and a second water inlet channel 5 are arranged at the rear end of the shell 1, and the first water inlet channel 4 and the second water inlet channel 5 are respectively located at the right side and the left side of the shell 1. The left end in the shell 1 is a switch valve core cavity 18, the right end of the shell 1 is provided with a first water inlet cavity 8, a second water inlet cavity 9 and a mixed water outlet cavity 10, and the thermostatic valve core 2 is inserted in the first water inlet cavity 8, the second water inlet cavity 9 and the mixed water outlet cavity 10. The first water inlet cavity 8 is communicated with the first water inlet channel 4 and one water inlet of the thermostatic valve core 2, the other water inlet of the thermostatic valve core 2 is positioned in the second water inlet cavity 9, and cold water and hot water are mixed in the thermostatic valve core 2 and then enter the mixed water outlet cavity 10 from the lower end of the thermostatic valve core 2. A second water inlet cavity 26 is arranged on the inner side of the switch valve core cavity 18, the second water inlet cavity 26 is communicated with the second water inlet channel 5, and a second water passing cavity 16 is arranged on the right side of the second water inlet cavity 26. A first water outlet cavity 27 and a second water outlet cavity 23 are arranged between the second water passing cavity 16 and the mixed water outlet cavity 10, the first water outlet cavity 27 is communicated with the first water outlet channel 6 on the lower surface of the shell 1, and the second water outlet cavity 23 is communicated with the second water outlet channel 22 on the upper surface of the shell 1. The second water passing cavity 16 is communicated with the second water inlet cavity 9 through the second water passing channel 17, the second water passing channel 17 is positioned at the outer sides of the first water outlet cavity 27 and the second water outlet cavity 23 and close to the back surface of the shell 1, and the second water passing channel 17 is positioned at one side of the shell 1 facing to the wall surface during installation, so that the situation that a user contacts the shell 1 at the outer side of the second water passing channel 17 when water flowing in the second water passing channel 17 is hot water is avoided, and scalding is caused.

The double-control switch valve core 3 comprises a second water inlet 11, a second water outlet 12, a mixed water inlet 13, a mixed water first outlet 14 and a mixed water second outlet 15 which are arranged on the bottom surface. The switch valve core seat 7 is positioned at the inner side of the double-control switch valve core 3, and the bottom surface of the double-control switch valve core 3 is in abutting seal with the end surface of the switch valve core seat 7 facing the double-control switch valve core 3. The switch valve core seat 7 is columnar and is inserted between the switch valve core cavity 18 and the mixed water outlet cavity 10 in the shell 1. The switch valve core seat 7 is internally provided with a first communication channel 19, a second communication channel 20, a third communication channel 21, a fourth communication channel 25 and a fifth communication channel 24 which are arranged along the axis of the switch valve core seat 7 and are straight holes. The radial cross-sectional shapes of the first communication passage 19, the second communication passage 20, the third communication passage 21, the fourth communication passage 25 and the fifth communication passage 24 are kept unchanged. The second communication channel 20 is approximately positioned in the center of the switch valve core seat 7 and penetrates through two end faces of the switch valve core seat 7, and the second communication channel 20 is communicated with the mixed water outlet cavity 10 and the mixed water inlet 13 of the double-control switch valve core 3. The first communication channel 19, the third communication channel 21, the fourth communication channel 25 and the fifth communication channel 24 are surrounded on the outer side of the second communication channel 20. The side surface of the switch valve core seat 7 is provided with a plurality of sealing convex rings 28, and after the switch valve core seat 7 is installed, the sealing convex rings 28 are in butt seal with the inner surface of the shell 1 between two adjacent cavities on the outer side of the switch valve core seat 7. The sealing convex ring 28 can be provided with a sealing ring groove 36, and a sealing ring is arranged in the sealing ring groove 36, so that the sealing effect is improved. An overflowing groove 29 is further formed in the switch valve core seat 7 between every two adjacent sealing convex rings 28, one end of each of the first communication channel 19, the third communication channel 21, the fourth communication channel 25 and the fifth communication channel 24 is located on the left end face of the switch valve core seat 7, and the other end of each of the first communication channel, the third communication channel, the fourth communication channel and the fifth communication channel is communicated with one overflowing groove 29. One end of the first communication channel 19 is communicated with the second water outlet 12 on the bottom surface of the double-control switch valve core 3, and the other end is communicated with the overflowing groove 29 in the second overflowing cavity 16. One end of the communication channel III 21 is communicated with a first water outlet on the bottom surface of the cavity of the double-control switch valve core 3, and the other end is communicated with an overflowing groove 29 in the first water outlet cavity 27. One end of the communication channel IV 25 is communicated with the second water inlet 11 on the bottom surface of the double-control switch valve core 3, and the other end is communicated with an overflowing groove 29 in the second water inlet cavity 26. One end of the communication channel five 24 is connected with the mixed water second water outlet 12 on the bottom surface of the double-control switch valve core 3, and the other end is communicated with the overflowing groove 29 in the second water outlet cavity 23. The arrangement of the overflowing channel and the overflowing groove 29 enables the switch valve core seat 7 to be communicated with a plurality of different cavities and a plurality of water inlets and water outlets on the bottom surface of the switch valve core seat 7, and the overall function of the faucet is achieved. Meanwhile, the switch valve core seat 7 and the shell 1 are arranged in a split mode, and the shell 1 and the switch valve core seat 7 can be processed conveniently. The inner structure of the shell 1 is simple, and the shell can be processed in a casting mode, so that the overall strength, corrosion resistance and durability of the shell 1 are improved. The switch valve core seat 7 can be obtained by casting, injection molding or bar drilling and milling, has various processing modes, and can be flexibly arranged according to actual needs and processing equipment. When using bar stock for machining, the sealing collar 28 may be machined by turning and the individual communication channels may be machined by drilling. The transfer groove 29 can be machined by drilling or milling.

The first water outlet is also provided with a water diversion valve core 30, the water diversion valve core 30 is a universal fitting in the industry and can be obtained through purchase, and the product disclosed by the patent with the patent number 201520658168.1 is also used (namely the swing nozzle 31 in the product is used for quickly opening the valve core 17). As shown in fig. 1, the upper end of the water diversion valve core 30 is fixed on the first water outlet channel 6 through threads, the side surface of the water diversion valve core 30 is provided with a water outlet 45, the end surface of the handle at the lower end of the water diversion valve core 30 is provided with a second water outlet 45, and water flow can be switched between the two water outlets when the handle is rotated. The swinging nozzle 31 is sleeved on the outer side of the water distribution valve core 30 and is circumferentially fixed with the handle of the water distribution valve core 30, and when the swinging nozzle 31 rotates, the handle of the water distribution valve core 30 is driven to rotate at the same time, so that the water outlet state of the water distribution valve core 30 is changed. The second water outlet 12 is provided with a fixed joint 37, and the fixed joint 37 is in threaded connection with the lower end of the handle of the water diversion valve core 30, so that the swinging nozzle 31 is fixed on the outer side of the water diversion valve core 30. When the first branched water outlet 32 is positioned at one side of the thermostatic valve core 2, the second branched water outlet 33 is communicated with the first water outlet channel 6, and when the swinging nozzle 31 rotates to the front surface of the shell 1, the first branched water outlet 32 is communicated with the first water outlet channel 6.

The double control switch valve element 3 may be the switch valve element disclosed in patent nos. 201510538006.9 and 201711035947.6 of the present company. The internal structure and operation of the valve core are described in more detail in these two patents, and are not described herein again. The thermostatic valve core adopts the thermostatic valve core with water inlet from the side surface and water outlet from the bottom surface, and the thermostatic valve core is a universal component in the industry and can be directly purchased and obtained, so the specific structure is not repeated.

In the second embodiment, the first embodiment of the method,

as shown in fig. 14, the difference between the second embodiment and the first embodiment lies in that the second water inlet 11 of the dual-control switch valve core 3 in the second embodiment is disposed on the side surface of the valve core, and the second water outlet 12, the mixed water inlet 13, the mixed water first outlet 14, and the mixed water second outlet 12 are disposed on the bottom surface of the valve core, so that the structures of the switch valve core seat 7 and the housing 1 can be simplified, the housing 1 does not need to be provided with the second water inlet cavity 26, the second water inlet 11 can be directly communicated with the switch valve core cavity 18, and meanwhile, the switch valve core seat 7 does not need to be provided with the communication channel five 24, thereby facilitating the production of the housing 1 and the switch valve core seat 7, and reducing the processing cost. As shown in fig. 15 to 17, the dual-control switch valve element 3 can be obtained by improving the valve element disclosed in patent No. 201510538006.9, a water inlet 45 communicated with the inner cavity is formed in the side surface of the valve element housing 40 disclosed in patent No. 201510538006.9, two water inlets 43 communicated with the water inlet 45 are formed in the lower surface of the movable valve plate 41, a water outlet 44 penetrating through the fixed valve plate 42 is formed in the fixed valve plate 42, and after assembly, the water outlet 44 is located between the two water inlets 43. The water in the second water inlet channel 5 enters the two water inlets 43 on the movable valve plate 41 from the side surface of the double-switch valve element shell 40, and when the movable valve plate 41 is rotated, water outlet is realized when one of the water inlets 43 coincides with the water outlet 44.

In addition, the double-control switch valve core can also use the switch valve core with the water diversion function disclosed in Chinese patent with the patent number of 201710887198.3.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (10)

1. The utility model provides a prevent running water thermostatic faucet, including casing (1), install thermostatic valve core (2) in casing (1), two accuse switch valve cores (3), be provided with first inlet channel (4) on casing (1), second inlet channel (5) and first outlet channel (6), casing (1) one end is provided with intake antrum one (8), intake antrum two (9) and mixed outlet chamber (10), casing (1) other end is provided with switch valve core chamber (18), thermostatic valve core (2) are inserted and are established in intake antrum one (8), intake antrum two (9) and mixed outlet chamber (10), in two accuse switch valve core (3) installation switch valve core chamber (18), its characterized in that: a switch valve core seat (7) is arranged between the thermostatic valve core (2) and the double-control switch valve core (3), a water inlet cavity I (8) is connected with a first water inlet channel (4), the double-control switch valve core (3) comprises a second water inlet (11), a second water outlet (12) arranged on the bottom surface of the double-control switch valve core (3), a mixed water inlet (13) and a mixed water first outlet (14), a second water inlet channel (5) is communicated with the second water inlet (11) on the double-control switch valve core (3), a second water passing cavity (16) and a second water passing channel (17) are arranged on the shell (1), the second water passing channel (17) is communicated with the second water passing cavity (16) and a water inlet cavity II (9), the bottom surface of the double-control switch valve core (3) is in abutting seal with one end surface of the switch valve core seat (7), a communication channel I (19), a communication channel II (20) and a communication channel III (21) are arranged on the switch valve core seat, one end of the first communication channel (19) is positioned on the end face of the switch valve core seat (7) and is connected with the second water outlet (12), and the other end of the first communication channel is communicated with the second water passing cavity (16); the second communication channel (20) penetrates through two end faces of the switch valve core seat (7) and communicates the mixed water inlet (13) and the mixed water outlet cavity (10); one end of the communication channel III (21) is positioned on the end surface of the switch valve core seat (7) and is communicated with the mixed water first outlet (14), and the other end of the communication channel III is communicated with the first water outlet cavity (27).

2. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: the second water inlet (11) is arranged on the side surface of the double-control switch valve core (3), and the second water inlet channel (5) is communicated with the switch valve core cavity (18); or the second water inlet (11) is arranged on the bottom surface of the double-control switch valve core (3), a second water inlet cavity (26) is arranged in the shell (1), the second water inlet cavity (26) is communicated with the second water inlet channel (5), a communication channel four (25) is arranged in the switch valve core seat (7), and the communication channel four (25) is communicated with the second water inlet cavity (26) and the second water inlet (11).

3. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: the shell (1) is further provided with a second water outlet channel (22), a second water outlet cavity (23) communicated with the second water outlet channel (22) is arranged in the shell (1), a communication channel five (24) is formed in the switch valve core seat (7), a mixed water second water outlet (12) is arranged on the bottom surface of the double-control switch valve core (3), and the communication channel five (24) is connected with the second water outlet cavity (23) and the mixed water second water outlet (12).

4. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: the first water outlet cavity (27) and the second water outlet cavity (23) are positioned between the second water passing cavity (16) and the mixed water outlet cavity (10), and the second water passing channel (17) is positioned outside the first water outlet cavity (27) and the second water outlet cavity (23).

5. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 4, which is characterized in that: a plurality of sealing convex rings (28) are arranged on the outer side of the switch valve core seat (7), and the sealing convex rings (28) are in sealing fit with the shells (1) on the two sides of the water inlet cavity II (9), the second water passing cavity (16), the first water outlet cavity (27) and the second water outlet cavity (23) in a mixing mode.

6. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 5, which is characterized in that: an overflowing groove (29) is arranged between two adjacent sealing convex rings (28), and the first communication channel (19) and the third communication channel (21) are respectively communicated with one overflowing groove (29).

7. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: the first communication channel (19), the second communication channel (20) and the third communication channel (21) are all straight holes and are arranged along the axial direction of the switch valve core seat (7).

8. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: the water diversion valve core (30) is installed on the first water outlet channel (6) and/or the second water outlet channel (22), the swing nozzle (31) is sleeved on the outer side of the water diversion valve core (30), the swing nozzle (31) is circumferentially fixed with a handle of the water diversion valve core (30), the side face of the swing nozzle (31) is provided with a first water diversion outlet (32), and the lower end of the swing nozzle (31) is provided with a second water diversion outlet (33).

9. The anti-water-breakthrough constant-temperature water faucet as claimed in claim 1, which is characterized in that: a positioning part (35) for axially positioning the switch valve core seat (7) is arranged in the shell (1).

10. The utility model provides a prevent running water constant temperature tap which characterized by: the second water passing channel (17) is close to one side of the back surface of the shell (1).

Images