A faucet thermostatic valve core

Abstract

The present invention relates to a faucet thermostatic valve core, comprising a valve sleeve, a switch mechanism, and a thermostatic mechanism. The switch mechanism comprises a piston, and a control component for driving the piston to move. The thermostatic mechanism comprises a knob, a water inlet valve plate provided with a cold water hole and a hot water hole, and an adjusting valve plate provided with a water inlet hole. The knob is linked with the adjusting valve plate through the valve sleeve to adjust the relative position of the water inlet hole and the cold water hole and the hot water hole to control the opening of the cold water hole and the hot water hole. A water-isolating cavity is provided in the valve sleeve, and the water-isolating cavity is connected with the water inlet hole of the adjusting valve plate. A water shutoff device is provided in the water-isolating cavity, and a water outlet channel is provided on the water shutoff device. When the water outlet channel is opened, the piston withdraws from the water outlet channel, and when the water outlet channel is closed, the piston enters the water outlet channel. The technical solution of the present invention provides a faucet thermostatic valve core with a simple structure and a long service life.

Description

Technical Field

[0001] The invention relates to the field of faucet valve cores, in particular to a faucet temperature regulating valve core. Background Art

[0002] At present, adjustable temperature faucets are widely used in daily life, but most adjustable temperature faucets need to readjust the water temperature each time they are used, which causes certain troubles to users. To solve this problem, Chinese Patent No. CN201720702652.9 proposes a "faucet thermostatic valve core". In this technical scheme, the faucet thermostatic valve core includes a water shut-off mechanism, a switch and a thermostatic mechanism. The water shut-off mechanism includes an elastic leather cup arranged between a water isolator and a water connection joint, and a leather cup seat arranged on the leather cup. A pressure chamber is formed between the elastic leather cup and the water isolator, a pressure reset spring is arranged in the pressure chamber, and a drainage hole connected to the water outlet is arranged in the middle of the leather cup seat. The switch mechanism includes a shaft rod, a cap and a piston, and a buffer reset spring is arranged between the shaft rod and the piston. Spring, the piston is also sleeved with water-stopping rubber particles for sealing the drainage hole, a compression spring is arranged between the cover cap and the valve sleeve, so that the shaft rod has a pressed state and a pop-up state, in the pressed state, the shaft rod drives the piston to make the water-stopping rubber particles close the drainage hole in the middle of the leather cup seat, in the pop-up state, the piston drives the water-stopping rubber particles to separate from the drainage hole, the pressure chamber is depressurized and the water is discharged, the temperature control mechanism includes a knob and a regulating valve plate with a mixed water hole, and a water inlet valve plate with cold and hot water holes, the opening is adjusted by adjusting the relative position of the mixed water hole and the cold and hot water holes, so that the cold and hot water are mixed in the pressure chamber and then flow out through the drainage hole through the water outlet channel, the regulating valve plate and the valve sleeve are synchronously rotated by a transmission sleeve, and a fixed sleeve is also arranged on the transmission sleeve to limit the transmission sleeve.

[0003] Although such a faucet thermostatic valve can solve the problem that users can enjoy the desired water temperature by controlling the switch mechanism after adjusting the water temperature once, it still has the following shortcomings: 1. The water-blocking mechanism of the valve core is too complicated, which increases the production cost. 2. The elastic leather cup and water-stopping rubber particles in the water-blocking mechanism are easily aged due to long-term alternating contact with cold and hot water, and the pressure spring in the pressure chamber is directly in contact with water, which is easy to cause corrosion and rust, thereby affecting the use of the entire device, so the service life of the valve core is not long. Summary of the invention

[0004] Based on the above problems, the present invention provides a faucet thermostatic valve core with simple structure and long service life.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a faucet thermostatic valve core, comprising a shell, a valve sleeve, a switch mechanism, and a thermostatic mechanism, the shell being provided with a cold water inlet, a hot water inlet, and a water outlet, the valve sleeve being arranged in the shell, the switch mechanism comprising a control component and a piston, the control component driving the piston to move in the valve sleeve, the thermostatic mechanism comprising a knob, a water inlet valve plate, and an adjusting valve plate, the water inlet valve plate being provided with a cold water hole, a hot water hole, and a water outlet hole, the cold water hole being communicated with the cold water inlet, the hot water hole being communicated with the hot water inlet, the water outlet hole being communicated with the water outlet, the adjusting valve plate being arranged at the upper end of the water inlet valve plate and rotating circumferentially relative to the water inlet valve plate with the knob, the adjusting valve plate being provided with a water inlet hole, and the cold water hole being controlled by adjusting the relative positions of the water inlet hole, the cold water hole, and the hot water hole. , the opening of the hot water hole, a water outlet hole is also provided on the regulating valve plate, the valve sleeve is provided at the upper end of the regulating valve plate, the regulating valve plate is linked with the knob through the valve sleeve, a water-isolating chamber is provided in the valve sleeve, the water-isolating chamber is communicated with the water inlet hole of the regulating valve plate, a containing chamber is provided at the upper end of the water-isolating chamber, a moving channel for the movement of the piston is provided in the containing chamber, the outer surface of the piston and the inner side wall of the moving channel form a first sealing surface for blocking the water flow, a water shut-off device is provided in the water-isolating chamber, the water shut-off device is provided with a water outlet channel communicated with the water outlet hole of the regulating valve plate and the water outlet hole of the water inlet valve plate, the outer surface of the piston and the inner side wall of the water outlet channel form a second sealing surface for blocking the water outlet channel, when the water outlet channel is opened, the piston withdraws from the water outlet channel, and when the water outlet channel is closed, the piston enters the water outlet channel.

[0006] By adopting the above technical solution, the control component is pressed to drive the piston to leave the water outlet channel of the water shut-off device, the water outlet channel is opened, and water flows out from the water outlet through the water outlet channel to open the faucet to discharge water. Then, the knob is turned through the valve sleeve to allow the regulating valve plate to rotate relative to the water inlet valve plate, so that the cold water and hot water entering from the cold water hole and hot water hole of the water inlet valve plate respectively are adjusted by adjusting the relative positions of the water inlet hole on the regulating valve plate and the cold and hot water holes on the water inlet valve plate to adjust the flow of the cold and hot water so that they are mixed in the water isolation cavity and then enter the water outlet channel to flow out from the water outlet, thereby realizing the adjustment of water temperature, and then the water is cooled and cooled again. When the faucet is opened or closed, a part of the piston is always located in the moving channel to seal the moving channel, so that the water flow will not flow into the cavity through the moving channel and cause the valve core to leak. The switching function of the valve core can be realized through the cooperation of the piston and the water shut-off device, and the temperature adjustment function of the valve core can be realized through the cooperation between the knob, the regulating valve plate and the water inlet valve plate. The piston and the water shut-off device are not made of elastic materials that are easy to age. With this arrangement, the structure of the temperature adjustment valve core is simpler and the service life is longer.

[0007] The present invention further provides that: the knob is arranged at the upper end of the valve sleeve, and the control component passes through the valve sleeve and abuts against the knob.

[0008] By adopting the above technical solution, the user directly drives the control component by pressing the knob to drive the piston to open and seal the water outlet channel, thereby realizing the switch adjustment of the faucet. This arrangement allows the knob to perform switch operations on the basis of temperature adjustment operations, further simplifying the structure and improving the ease of use of the temperature control valve core.

[0009] The present invention further provides that: the valve sleeve and the water shut-off device are located at the upper end of the regulating valve plate and abut against the regulating valve plate.

[0010] By adopting the above technical solution, cold and hot water directly enter the water isolation chamber and mix through the adjustment of the thermostatic valve plate, and then flow out from the water outlet channel of the water shut-off device through the control of the switch mechanism. Such an arrangement further simplifies the structure and reduces production costs on the basis of realizing the thermostatic function of the thermostatic valve core.

[0011] The present invention further provides that: a water stopper limit block is arranged in the water isolation cavity, and the water stopper limit block enables the water stopper to be in close contact with the regulating valve plate under the action of the valve sleeve.

[0012] By adopting the above technical scheme, the valve sleeve, the regulating valve plate and the water inlet valve plate are tightly fitted with each other in the outer shell, and the water shut-off limit block makes the water shut-off device tightly contact with the regulating valve plate while the valve sleeve is in tight contact with the regulating valve plate, so that the water flow will not overflow from the contact gap between the two contact surfaces of the water shut-off device and the regulating valve plate to the water outlet channel and cause the valve core to leak.

[0013] The present invention further provides that: a rubber sealing ring is provided between the valve sleeve and the regulating valve plate.

[0014] By adopting the above technical solution, water flow will not overflow into the housing through the contact gap between the contact surfaces of the valve sleeve and the regulating valve plate to cause water leakage of the valve core.

[0015] The present invention further provides that: a rubber sealing ring is provided between the water shut-off device and the regulating valve plate.

[0016] By adopting the above technical solution, the contact surface between the water shutoff device and the regulating valve plate is further sealed so that water will not overflow from the contact gap between the two contact surfaces of the water shutoff device and the regulating valve plate to the water outlet channel and cause the valve core to leak.

[0017] The present invention further provides that: the valve sleeve and the regulating valve plate are provided with mutually matching connection and positioning devices.

[0018] By adopting the above technical solution, the regulating valve plate is connected to the positioning device and rotates synchronously with the valve sleeve in the circumferential direction, so that the knob controls the regulating valve plate.

[0019] The present invention further provides that: the connection positioning device includes a protrusion arranged on the valve sleeve, and a groove arranged on the regulating valve plate corresponding to the protrusion, and the protrusion and the groove are engaged to enable the regulating valve plate to rotate circumferentially with the valve sleeve.

[0020] By adopting the above technical solution, the synchronous rotation control of the regulating valve plate by the knob is realized through the simple structural cooperation between the valve sleeve and the regulating valve core. Such an arrangement further simplifies the structure and reduces the production cost.

[0021] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of an embodiment of the present invention;

[0023] Figure 2 A bottom view of an embodiment of the present invention;

[0024] Figure 3 is a cross-sectional view of an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the valve sleeve in an embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a valve sleeve according to an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the water inlet valve plate in an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of the regulating valve plate in an embodiment of the present invention.

[0029] 1. Shell 11. Cold water inlet 12. Hot water inlet 13. Water outlet 2. Valve sleeve 21. Water isolation chamber 211. Water stopper limit block 22. Receptacle 221. Moving channel 23. Bump 3. Switch mechanism 31. Control component 32. Piston 4. Thermostatic mechanism 41. Knob 42. Water inlet valve plate 421. Cold water hole 422. Hot water hole 43. Adjusting valve plate 431. Water inlet hole 432. Groove 44. Water outlet hole 5. Water stopper 51. Water outlet channel 6. Rubber sealing ring. DETAILED DESCRIPTION

[0030] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

[0031] See attached Figure 1-7The present invention is a faucet thermostatic valve core, comprising a shell 1, a valve sleeve 2, a switch mechanism 3, and a thermostatic mechanism 4. The shell 1 is provided with a cold water inlet 11, a hot water inlet 12, and a water outlet 13. The valve sleeve 2 is arranged in the shell 1. The switch mechanism 3 comprises a control component 31 and a piston 32. The control component 31 drives the piston 32 to move in the valve sleeve 2. The thermostatic mechanism 4 comprises a knob 41, a water inlet valve plate 42, and a regulating valve plate 43. The water inlet valve plate 42 is provided with a cold water hole 421, a hot water hole 422, and a water outlet hole 44. The cold water hole 421 is in communication with the cold water inlet 11, the hot water hole 422 is in communication with the hot water inlet 12, and the water outlet hole 44 is in communication with the water outlet 13. The regulating valve plate 43 is arranged at the upper end of the water inlet valve plate 42 and rotates circumferentially with the knob 41 relative to the water inlet valve plate 42. The regulating valve plate 43 is provided with a water inlet hole 431. The opening of the cold water hole 421 and the hot water hole 422 is controlled by adjusting the relative positions of the water inlet hole 431 and the cold water hole 421 and the hot water hole 422. The regulating valve plate 43 is also provided with a water outlet hole 44. The valve sleeve 2 is arranged at the upper end of the regulating valve plate 43. The regulating valve plate 43 is linked with the knob 41 through the valve sleeve 2. A water isolation cavity 21 is arranged in the valve sleeve 2. The water isolation cavity 21 is communicated with the water inlet hole 431 of the regulating valve plate 43. The upper end of the water isolation cavity 21 is provided with a receiving cavity 22. A moving channel 221 for the piston 32 to move is provided in the cavity 22, and the outer surface of the piston 32 and the inner side wall of the moving channel 221 form a first sealing surface for blocking the water flow. A water stopper 5 is provided in the water-blocking cavity 21, and the water stopper 5 is provided with a water outlet channel 51 which is connected to the water outlet hole 44 of the regulating valve plate 43 and the water outlet hole 44 of the water inlet valve plate 42. The outer surface of the piston 32 and the inner side wall of the water outlet channel 51 form a second sealing surface for blocking the water outlet channel 51. When the water outlet channel 51 is opened, the piston 32 withdraws from the water outlet channel 51. When the water outlet channel 51 is closed, the piston 32 enters the water outlet channel 51. The piston 32 leaves the closed channel under the drive of the control component 31. The water outlet channel 51 of the water device 5 is opened, and water flows out from the water outlet 13 through the water outlet channel 51 to open the faucet to discharge water. Then, the knob 41 is turned to allow the regulating valve plate 43 to rotate relative to the water inlet valve plate 42 through the valve sleeve 2, so that the cold water and hot water respectively enter through the cold water hole 421 and the hot water hole 422 of the water inlet valve plate 42. By adjusting the relative positions of the water inlet hole 431 on the regulating valve plate 43 and the cold water hole 421 and the hot water hole 422 on the water inlet valve plate 42, the flow of the cold and hot water is adjusted so that they are mixed in the water isolation chamber 21 and then enter the water outlet channel 51 and flow out from the water outlet 13, thereby realizing the adjustment of water temperature. The driving piston 32 of the control component 31 enters the water outlet channel 51 again to seal the water outlet channel 51 and close the faucet.When the faucet is opened or closed, a part of the piston 32 is always located in the movable channel 221 to seal the movable channel 221, so that the water flow will not flow into the cavity 22 through the movable channel 221 and cause the valve core to leak. The valve core's switch function can be realized through the cooperation of the piston 32 and the water stopper 5. The valve core's temperature adjustment function can be realized through the cooperation between the knob 41, the regulating valve plate 43 and the water inlet valve plate 42. The piston 32 and the water stopper 5 are not made of elastic materials that are easy to age. Such a configuration makes the structure of the temperature adjustment valve core simpler and has a longer service life. The water stopper 5 of the present invention can be integrally arranged with the valve sleeve 2 or integrally arranged with the regulating valve plate 43. The water inlet hole 431 on the regulating valve plate 43 can be set to one or more. The preferred configuration of this embodiment is that the water stopper 5 is independently arranged in the water isolation cavity 21, and the water inlet hole 431 is set to two and corresponds to the cold water hole 421 and the hot water hole 422 respectively.

[0032] Further configuration of this embodiment: the knob 41 is arranged at the upper end of the valve sleeve 2, the control component 31 passes through the valve sleeve 2 and abuts against the knob 41, and the user directly drives the control component 31 by operating the knob 41, thereby driving the piston 32 to open and seal the water outlet channel 51, thereby realizing the switch adjustment of the faucet. With this configuration, the knob 41 can also perform a switch operation on the basis of performing a temperature adjustment operation, further simplifying the structure and improving the ease of use of the temperature control valve core.

[0033] Further configuration of this embodiment: the valve sleeve 2 and the water shut-off device 5 are located at the upper end of the regulating valve plate 43 and are against the regulating valve plate 43, and the cold and hot water directly enter the water isolation chamber 21 and mix through the adjustment of the thermostatic valve plate, and then flow out from the water outlet channel 51 of the water shut-off device 5 through the control of the switch mechanism 3. Such configuration further simplifies the structure and reduces the production cost on the basis of realizing the thermostatic function of the thermostatic valve core.

[0034] The water shutoff limit block 211 described in the present invention can be arranged on the water shutoff 5 and abut against the water isolation chamber 21. The present embodiment is preferably further arranged: a water shutoff limit block 211 is arranged in the water isolation chamber 21, and the water shutoff limit block 211 makes the water shutoff 5 in close contact with the regulating valve plate 43 under the action of the valve sleeve 2, and the valve sleeve 2, the regulating valve plate 43 and the water inlet valve plate 42 are tightly fitted with each other in the outer shell 1, and the water shutoff limit block 211 makes the water shutoff 5 in close contact with the regulating valve plate 43 while the valve sleeve 2 is in close contact with the regulating valve plate 43, so that the water flow will not overflow from the contact gap between the two contact surfaces of the water shutoff 5 and the regulating valve plate 43 to the water outlet channel 51 to cause the valve core to leak.

[0035] Further configuration of this embodiment: a rubber sealing ring 6 is provided between the valve sleeve 2 and the regulating valve plate 43, so that water flow will not overflow into the housing 1 through the contact gap between the contact surfaces of the valve sleeve 2 and the regulating valve plate 43 to cause water leakage of the valve core.

[0036] Further configuration of this embodiment: a rubber sealing ring 6 is provided between the water shut-off device 5 and the regulating valve plate 43, which further seals the contact surface between the water shut-off device 5 and the regulating valve plate 43 so that water will not overflow from the contact gap between the two contact surfaces of the water shut-off device 5 and the regulating valve plate 43 to the water outlet channel 51 and cause the valve core to leak.

[0037] The connection positioning device described in the present invention can be set to one or more. The present embodiment preferably further configures: the valve sleeve 2 and the regulating valve plate 43 are provided with mutually cooperating connection positioning devices, and the regulating valve plate 43 rotates synchronously with the valve sleeve 2 through the connection positioning device, so as to realize the control of the regulating valve plate 43 by the knob 41.

[0038] The protrusion 23 described in the present invention can be arranged on the regulating valve plate 43, and the groove 432 cooperating with the protrusion 23 can be arranged on the valve sleeve 2. They can also be positioned by mutual engagement of saw teeth or other forms of mutual cooperation. The present embodiment is preferably further configured: the connection positioning device includes a protrusion 23 arranged on the valve sleeve 2, and a groove 432 corresponding to the protrusion 23 is arranged on the regulating valve plate 43. The protrusion 23 is engaged with the groove 432 to enable the regulating valve plate 43 to rotate circumferentially with the valve sleeve 2. The synchronous rotation control of the regulating valve plate 43 by the knob 41 is realized through the simple structural cooperation between the valve sleeve 2 and the regulating valve core. Such a configuration further simplifies the structure and reduces the production cost.

Claims

1. A faucet thermostatic valve core, comprising a shell, a valve sleeve, a switch mechanism, and a thermostatic mechanism, wherein the shell is provided with a cold water inlet, a hot water inlet, and a water outlet, the valve sleeve is arranged in the shell, the switch mechanism comprises a control component and a piston, the control component drives the piston to move in the valve sleeve, the thermostatic mechanism comprises a knob, a water inlet valve plate, and an adjusting valve plate, the water inlet valve plate is provided with a cold water hole, a hot water hole, and a water outlet hole, the cold water hole is in communication with the cold water inlet, the hot water hole is in communication with the hot water inlet, the water outlet hole is in communication with the water outlet, the adjusting valve plate is arranged at the upper end of the water inlet valve plate and rotates circumferentially relative to the water inlet valve plate with the knob, the adjusting valve plate is provided with a water inlet hole, the opening of the cold water hole and the hot water hole is controlled by adjusting the relative positions of the water inlet hole and the cold water hole and the hot water hole, and the adjusting valve plate is also provided with a water outlet hole, characterized in that: The valve sleeve is arranged at the upper end of the regulating valve plate, and the regulating valve plate is linked to the knob through the valve sleeve. A water-isolating cavity is arranged in the valve sleeve, and the water-isolating cavity is communicated with the water inlet hole of the regulating valve plate. A containing cavity is arranged at the upper end of the water-isolating cavity, and a moving channel for the movement of the piston is arranged in the containing cavity. The outer surface of the piston and the inner side wall of the moving channel form a first sealing surface for blocking the water flow. A water shut-off device is arranged in the water-isolating cavity, and a water outlet hole of the regulating valve plate and an outlet hole of the water inlet valve plate are arranged on the water shut-off device. The water outlet channel is connected to the water hole, the outer surface of the piston and the inner wall of the water outlet channel form a second sealing surface for blocking the water outlet channel, when the water outlet channel is opened, the piston withdraws from the water outlet channel, and when the water outlet channel is closed, the piston enters the water outlet channel; the valve core realizes the temperature adjustment function through the cooperation between the knob, the regulating valve plate and the water inlet valve plate; the water outlet channel drives the control component by pressing the knob to drive the piston to control the opening and sealing, thereby realizing the switch adjustment of the faucet.

2. The faucet thermostatic valve core according to claim 1, characterized in that: The knob is arranged at the upper end of the valve sleeve, and the control component passes through the valve sleeve and abuts against the knob.

3. The faucet thermostatic valve core according to claim 1, characterized in that: The valve sleeve and the water shut-off device are located at the upper end of the regulating valve plate and abut against the regulating valve plate.

4. The faucet thermostatic valve core according to claim 1, characterized in that: A water stopper limit block is arranged in the water isolation cavity, and the water stopper limit block enables the water stopper to be in close contact with the regulating valve plate under the action of the valve sleeve.

5. The faucet thermostatic valve core according to claim 1, characterized in that: A rubber sealing ring is arranged between the valve sleeve and the regulating valve plate.

6. The faucet thermostatic valve core according to claim 1, characterized in that: A rubber sealing ring is arranged between the water shut-off device and the regulating valve plate.

7. The faucet thermostatic valve core according to claim 1, characterized in that: The valve sleeve and the regulating valve plate are provided with connecting and positioning devices that cooperate with each other.

8. The faucet thermostatic valve core according to claim 7, characterized in that: The connection and positioning device comprises a convex block arranged on the valve sleeve, and a concave groove arranged on the regulating valve plate corresponding to the convex block. The convex block and the concave groove are engaged with each other so that the regulating valve plate rotates circumferentially with the valve sleeve.

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