阅读说明：本技术 一种具有开关功能的侧面进水恒温阀芯 (Side surface water inlet thermostatic valve core with switch function ) 是由 林仙明 于 2019-10-10 设计创作，主要内容包括：本发明公开了一种带有开关功能的侧面进水恒温阀芯,包括壳体,壳体内安装有调温杆、调温滑块、活塞、感温元件和复位弹簧,调温杆转动设置在壳体内,调温滑块轴向滑动设置在壳体内,调温杆和调温滑块螺接配合,壳体侧面设置有进水口一和进水口二,固定座下端面和活塞上端面之间形成控水口一,壳体内设置有台阶面,台阶面与活塞下端面之间形成控水口二,控水口一与进水口一直接连通,控水口二与进水口二直接连通,调温滑块下端部为开关凸部,开关凸部下端面与活塞上端面形成控水开关口,转动调温杆时开关凸部可伸出固定座下端面与活塞抵触,使控水口二和控水开关口均关闭。(The invention discloses a side water inlet thermostatic valve core with a switch function, which comprises a shell, wherein a temperature adjusting rod and a temperature adjusting slide block are arranged in the shell, the temperature adjusting device comprises a piston, a temperature sensing element and a reset spring, wherein a temperature adjusting rod is rotatably arranged in a shell, a temperature adjusting slider is axially and slidably arranged in the shell, the temperature adjusting rod is in threaded fit with the temperature adjusting slider, a first water inlet and a second water inlet are formed in the side face of the shell, a first water control opening is formed between the lower end face of a fixed seat and the upper end face of the piston, a step face is arranged in the shell, a second water control opening is formed between the step face and the lower end face of the piston, the first water control opening is directly communicated with the first water inlet, the second water control opening is directly communicated with the second water inlet, a switch convex part is arranged at the lower end of the temperature adjusting slider, a water control switch opening is formed between the lower end face of the switch convex part and the upper end face.)

1. The utility model provides a side constant temperature valve core of intaking with switch function, including fixing base (27) and casing (28), install in fixing base (27) and casing (28) tempering bar (2), tempering slider (3), piston (4), temperature-sensing element (5) and reset spring (6), tempering bar (2) are rotated and are set up in fixing base (27), tempering slider (3) endwise slip sets up in fixing base (27), tempering bar (2) and tempering slider (3) spiro union cooperation, characterized by: a first water inlet (7) and a second water inlet (8) which are directly communicated with a flow channel in the faucet valve body are arranged on the side face of the shell (1), a first water control opening (29) is formed between the lower end face (10) of the fixed seat (27) and the upper end face of the piston (4), a step face (11) is arranged in the shell (1), a second water control opening (30) is formed between the step face (11) and the lower end face of the piston (4), the second water control opening (30) is directly communicated with the second water inlet (8), a switch convex part (14) is arranged at the lower end part of the temperature regulating slider (3), a second water control opening (31) is formed between the lower end face of the switch convex part (14) and the upper end face of the piston (4), and the first water inlet (7) is communicated with the first; when the temperature adjusting rod (2) is rotated, the piston (4) can move downwards, the lower end face of the piston (4) is enabled to be abutted against the step face (11), the water control port II (30) is closed, the switch convex part (14) can move downwards, extends out of the lower end face (10) of the fixed seat and is abutted against the upper end face of the piston (4), and the water control switch port (31) is closed.

2. The side water inlet thermostatic valve core with the switch function as claimed in claim 1, which is characterized in that: a first sealing element (15) is arranged between the switch convex part (14) and the upper end surface of the piston (4) and/or a second sealing element (16) is arranged between the lower end surface of the piston (4) and the step surface (11).

3. The side water inlet thermostatic valve core with the switch function as claimed in claim 2, which is characterized in that: and a sealing groove (17) is formed in the upper end face and/or the lower end face of the piston (4), and sealing elements (15 and 16) are installed in the sealing groove (17).

4. The side water inlet thermostatic cartridge with the switch function as claimed in claim 3, wherein: the surfaces of the sealing elements (15, 16) at the upper end and/or the lower end of the piston (4) protrude out of the end surface of the piston (4).

5. The side water inlet thermostatic cartridge with the switch function as claimed in claim 3, wherein: an axially extending inner flange (18) is arranged on the inner side edge of the step surface (11), the outer diameter of the second sealing element (16) is larger than that of the inner flange (18), and the inner diameter of the second sealing element (16) is smaller than that of the inner flange (18).

6. The side water inlet thermostatic valve core with the switch function as claimed in claim 1, which is characterized in that: temperature-sensing element (5) are paraffin temperature-sensing element (19), and paraffin temperature-sensing element (19) middle part is connected with piston (4), and reset spring (6) set up in piston (4) downside, are provided with installation cavity (20) in thermoregulation slider (3), install buffer spring (21) and press cap (22) in installation cavity (20), press cap (22) to slide and set up in installation cavity (20), ejector pin (23) and the conflict of pressing cap (22) of paraffin temperature-sensing element (19) upper end.

7. The side water inlet thermostatic valve core with the switch function as claimed in claim 6, wherein: a limiting piece (24) is arranged at an opening of the installation cavity (20), the buffer spring (21) and the pressing cap (22) are located on the inner side of the limiting piece (24), the limiting piece (24) pre-presses the buffer spring (21), and the pre-pressure of the buffer spring (21) is larger than the pressing force of the reset spring (6) during normal temperature adjustment.

8. The side water inlet thermostatic valve core with the switch function as claimed in claim 7, wherein: the rigidity of the buffer spring (21) is greater than that of the return spring (6).

Technical Field

The invention relates to sanitary equipment, in particular to a side water inlet thermostatic valve core with a switch function.

Background

The thermostatic valve core is a device for adjusting the water outlet temperature, and after the water outlet temperature is adjusted by the thermostatic valve core, a piston in the valve core can automatically adjust the mixing ratio of cold water and hot water so as to overcome the change of the water inlet temperature and the water pressure and keep the water outlet temperature at the set temperature.

As shown in the thermostatic valve core with the patent number 201420398373.4, the valve core only has the outlet water temperature adjusting function and does not have the outlet water closing function, and a switch valve core is additionally arranged to control the outlet water flow during use. In addition, in order to prevent the water leakage phenomenon caused by the pressure difference between cold water and hot water in the thermostatic valve core in the closed state, the switch valve core has certain details during arrangement.

If the switch valve core is arranged behind the thermostatic valve core, namely the switch valve core is arranged on the water outlet water way, in order to prevent the water from mixing in the thermostatic valve core, the check valves are required to be arranged on the cold water inlet water way and the hot water inlet water way of the thermostatic valve core, so that the water mixing phenomenon is prevented.

If the switch valve core is arranged on the water inlet water path of the thermostatic valve core, the switch valve core is required to be arranged on the two water inlet water paths of the thermostatic valve core to achieve the function of completely closing the water outlet. When the temperature-adjusting valve is used, the two switch valve cores are required to be opened to start normal temperature adjustment. When the valve is closed, the two switch valve cores are closed to completely cut off water. The thermostatic valve core has the advantages of single function, complex waterway structure during use and inconvenience in use.

Chinese patent No. 201410247973.5 discloses an openable cold and hot water thermostatic valve cartridge, which has an opening and closing function, but the valve cartridge adopts the form of bottom surface water inlet and bottom surface water outlet, and forms a cold water inlet flow passage and a hot water inlet flow passage inside the valve cartridge by using an inner housing body and an outer housing body, and introduces water into both ends of a sensor (piston), and achieves the effect of controlling the ratio of cold and hot water inlet by the up-and-down sliding of the piston. Although the valve core can realize the functions of opening and closing and constant temperature, the structure is complex, and the production and the processing are inconvenient.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the side surface water inlet thermostatic valve core with the switch function, which has the thermostatic function and the switch function, can be used without being matched with the switch valve core and is more convenient to use.

The technical purpose of the invention is realized by the following technical scheme: a side water inlet thermostatic valve core with a switch function comprises a fixed seat and a shell, wherein a temperature adjusting rod, a temperature adjusting slider, a piston, a temperature sensing element and a reset spring are arranged in the fixed seat and the shell, the temperature adjusting rod is rotatably arranged in the fixed seat, the temperature adjusting slider is axially and slidably arranged in the fixed seat, the temperature adjusting rod is in threaded fit with the temperature adjusting slider, a first water inlet and a second water inlet which are directly communicated with a flow passage in a faucet valve body are arranged on the side surface of the shell, a first water control opening is formed between the lower end surface of the fixed seat and the upper end surface of the piston (4), a second water control opening is formed between the step surface and the lower end surface of the piston, the second water control opening is directly communicated with the second water inlet, a switch convex part is arranged at the lower end surface of the temperature adjusting slider, a water control switch opening is formed between the lower end surface; when the temperature adjusting rod is rotated, the piston can move downwards, the lower end face of the piston is enabled to be abutted against the step face, the second water control opening is closed, the switch convex part can move downwards, extends out of the lower end face of the fixing seat and is abutted against the upper end face of the piston, and the water control opening is closed.

Through the technical scheme, when the temperature adjusting rod rotates, the temperature adjusting rod drives the temperature adjusting slide block to axially slide through the threads. When the thermostatic valve core needs to be closed, the temperature adjusting rod is continuously rotated to enable the temperature adjusting slide block to move downwards, and the temperature adjusting slide block pushes the piston to move downwards through the temperature sensing element or the return spring. In the process, the distance between the switch convex part at the lower end of the temperature regulating slide block and the upper end face of the piston is continuously reduced, and meanwhile, the distance between the lower end face of the piston and the step face is also continuously reduced until the lower end face of the piston is tightly abutted against the step face and the lower end face of the switch convex part and the fixed seat is also tightly abutted against the step face. At the moment, the upper end face of the piston is tightly propped against the switch convex part, the upper end face of the piston and the switch convex part are in sealing fit, and the water inlet of the water inlet I is cut off; the lower end surface of the piston is tightly abutted and in sealing fit with the step surface, so that water inflow of the water inlet II is cut off. When the lower end face of the piston is abutted against the step face and the switch convex part is abutted against the upper end face of the piston, water flows of the first water inlet and the second water inlet are all cut off, and the valve core is closed.

When the temperature adjusting rod rotates reversely from a closed state, the temperature adjusting slide block moves upwards, the lower end face of the piston and the step face can be separated from collision, the switch convex part and the upper end face of the piston can also be separated from collision, and the thermostatic valve core is opened. At the moment, the piston can slide between the lower end face of the fixed seat and the step face, when the temperature adjusting rod is continuously rotated to enable the temperature adjusting slider to slide, the piston also slides under the action of the return spring or the temperature sensing element, so that the distance between the lower end face of the piston and the step face is increased, the distance between the upper end face of the piston and the lower end face of the fixed seat is reduced, the distance between the lower end face of the piston and the step face is reduced, and the distance between the upper end face of the piston and the lower end face of the fixed seat is increased, so that the outlet water temperature can be normally set.

The water inlet I is communicated with the water control port I and the water control switch port, and the water control port II is communicated with the water inlet II. The water control opening controls the flow of the water inlet into the shell. The water control port controls the flow of the water inlet II flowing into the shell until the flow of the water inlet II is cut off. And the water control switch port is used for cutting off the flow of the first water inlet.

Preferably, a first sealing piece is arranged between the switch convex part and the upper end face of the piston and/or a second sealing piece is arranged between the lower end face of the piston and the step face.

Through the technical scheme, the first sealing element and the second sealing element can be coated on the upper end face or the lower end face of the piston, so that the sealing effect when the valve core is closed is improved. In addition, the first sealing element can also cover the outer side of the switch convex part, and the second sealing element can be installed on the step surface.

Preferably, a sealing groove is formed in the upper end face and/or the lower end face of the piston, and a sealing element is installed in the sealing groove.

Through above-mentioned technical scheme, holistic seal structure is simple, and the seal groove setting is comparatively convenient at this processing of department, and the seal groove setting is also comparatively convenient when the sealing washer is installed at this department simultaneously. The phenomenon of falling off and the like is not easy to occur when the seal is used for sealing and cheering.

Preferably, the sealing surface of the upper and/or lower end of the piston projects beyond the end face of the piston.

Through above-mentioned technical scheme, when terminal surface, step face or switch convex part were contradicted under sealing member and the fixing base, can guarantee the compression capacity of sealing member to guarantee sealed effect.

Preferably, an inner flange extending axially is arranged at the inner side edge of the step surface, the outer diameter of the second sealing element is larger than that of the inner flange, and the inner diameter of the second sealing element is smaller than that of the inner flange.

Through above-mentioned technical scheme, when terminal surface and step face conflict under the piston, the inner flange can block in the seal groove to guarantee that the inner flange can support tightly between with sealing member two, thereby reach better sealed effect.

Preferably, the temperature sensing element is a paraffin temperature sensing element, the middle part of the paraffin temperature sensing element is connected with the piston, the reset spring is arranged at the lower side of the piston, an installation cavity is arranged in the temperature adjusting slide block, a buffer spring and a pressing cap are installed in the installation cavity, the pressing cap is arranged in the installation cavity in a sliding mode, and a mandril at the upper end of the paraffin temperature sensing element is abutted to the pressing cap.

Through the technical scheme, the arrangement of the buffer spring can buffer the ejection of the ejector rod of the paraffin temperature sensing element. When the temperature of the mixed water changes suddenly, the ejector rod of the paraffin temperature sensing element can be ejected out quickly, and if the piston cannot slide in time, the valve core can be propped and exploded or the temperature adjusting rod and the temperature adjusting slide block can be clamped. The arrangement of the buffer spring can avoid the phenomenon.

The paraffin wax temperature sensing element (generally called as a bulb in the market) is a commonly used temperature sensing element, has low cost and stable performance, can better feed back the temperature of mixed water and drive the piston to slide, thereby changing the mixing proportion of cold water and hot water and ensuring that the temperature of outlet water is stabilized at a set temperature.

Preferably, a limiting part is arranged at the opening of the installation cavity, the buffer spring and the pressing cap are positioned on the inner side of the limiting part, the limiting part pre-compresses the buffer spring, and the pre-compression force of the buffer spring is greater than the pressing force of the reset spring during normal temperature adjustment.

Through above-mentioned technical scheme, when normally adjusting the temperature, reset spring only plays the cushioning effect, and the piston slides under reset spring's effect between terminal surface and the step face under the fixing base to the inflow of control water inlet one and water inlet two, thereby adjusts leaving water temperature.

Preferably, the stiffness of the buffer spring is greater than the stiffness of the return spring.

Through the technical scheme, the rigidity of the buffer spring is greater than that of the return spring, so that the water inlet II is firstly sealed in the process of closing the valve core, and then the water inlet I is sealed; at the in-process of opening the case, open water inlet one earlier, opening the water inlet, because water inlet two and hot water inlet pipe intercommunication, water inlet one and cold water pipeline intercommunication set up like this and can avoid the higher hot water of temperature to flow out suddenly in the use, cause the scald accident.

Compared with the prior art, the invention has the beneficial effects that: through set up the switch convex part on the slider that adjusts the temperature, through the slider that adjusts the temperature lapse for it is sealed to contradict between switch convex part and the piston up end, and it is sealed to contradict between terminal surface and the step face under the piston simultaneously, thereby cuts off cold water intaking and hot water intaking, thereby closes the thermostatic cartridge, makes the thermostatic cartridge can realize constant temperature function and switch function simultaneously.

Drawings

FIG. 1 is a schematic cross-sectional view of a first embodiment;

FIG. 2 is an exploded view of the first embodiment;

FIG. 3 is a schematic cross-sectional view of a fixing base according to an embodiment;

FIG. 4 is a schematic cross-sectional view of a housing according to an embodiment;

FIG. 5 is a schematic cross-sectional view of a thermal slider according to an embodiment;

FIG. 6 is a schematic cross-sectional view of a closed state of the first embodiment;

FIG. 7 is a schematic cross-sectional view of the embodiment as soon as it is opened;

FIG. 8 is a schematic structural diagram illustrating a normal temperature adjustment according to an embodiment;

FIG. 9 is a schematic cross-sectional view of the second embodiment.

Reference numerals: 2. a temperature adjusting lever; 3. a temperature adjusting slide block; 4. a piston; 5. a temperature sensing element; 6. a return spring; 7. a first water inlet; 8. a water inlet II; 9. a sealing convex ring; 10. the lower end surface of the fixed seat; 11. a step surface; 14. A switch boss; 15. a first sealing element; 16. a second sealing element; 17. a sealing groove; 18. an inner flange; 19. a paraffin wax temperature sensing element; 20. a mounting cavity; 21. a buffer spring; 22. pressing the cap; 23. a top rod; 24. a limiting member; 27. a fixed seat; 28. a housing; 29. a first water control port; 30. a water control port II; 31. and controlling water to open and close the opening.

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 of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.