Integrated thermostatic valve core

Abstract

The present application relates to the technical field of thermostatic valve core, in particular to an integrated thermostatic valve core, comprising: a cold and hot water regulating assembly vertically arranged in a valve body, the cold and hot water regulating assembly comprising a lifting block, the lifting block being movably arranged between a cold water inlet and a hot water inlet along a vertical direction; a temperature stick vertically arranged at an upper portion of the lifting block, a bottom portion of the temperature stick abutting against the lifting block; an adjusting unit arranged at an upper portion of the temperature stick along an axis of the valve body, the adjusting unit being used to drive the temperature stick to lift and fall; a driving sleeve rotatably arranged at an upper portion of the valve body along the axis of the valve body, the adjusting unit penetrating through the driving sleeve along the axis of the valve body; and a sealing sleeve arranged at a lower portion of the driving sleeve and threadedly matched with the driving sleeve, the driving sleeve being used to drive the sealing sleeve to move along the axis of the valve body, and the sealing sleeve being used to seal an outlet.The present application simplifies the overall structure of the valve core, reduces assembly links, and improves the stability and reliability of the thermostatic regulation.

Description

Technical Field

[0001] This invention relates to the field of thermostatic valve core technology, specifically to an integrated thermostatic valve core. Background Technology

[0002] In small appliances such as shower faucets, kitchen and bathroom water purifiers, and water heaters, thermostatic valve cores use temperature-sensing elements to expand and contract with the temperature of the mixed water, driving a thermostatic piston to move and simultaneously adjust the opening of the cold and hot water inlets in the opposite direction, so that the outlet water temperature returns to the user-set value. In traditional solutions, the on / off valve and thermostatic valve are separate units, resulting in many parts and complex assembly; to reduce size, the industry has further proposed a solution that integrates the on / off, temperature adjustment, and thermostatic functions into a single valve core.

[0003] In the prior art, for example, a switch-type thermostatic valve core disclosed in Chinese invention patent application (publication number CN108036105A) is essentially an integrated thermostatic valve core. The prior art discloses the following: the outer casing has a cold water inlet, a hot water inlet, a mixed water outlet, and a pressure relief hole; the casing contains a water distribution seat, a thermostat, a temperature regulating device, and a switch piston; the thermostat includes a temperature-sensitive element and a thermostat piston placed in the mixing chamber, the temperature-sensitive element is a shape memory alloy spring, and its two ends abut against the flange of the water distribution seat ring and the thermostat piston, respectively, and the thermostat piston is controlled by the extension and contraction of the shape memory alloy spring to reverse the opening of the cold and hot water inlets; the temperature regulating device is set by a rotating temperature regulating handle that pushes the thermostat piston axially through the connector to set the target temperature; its switch function is completely independent and adopts a push-button structure, the switch control device includes a push-button mechanism and a switching rod, the lower end of the switching rod is plugged to correspond to the pressure relief hole, the casing also contains a switch piston and a compression spring located between the switch piston and the bottom of the casing, when the pressure relief hole is closed by pressing, the switch piston is reset by the compression spring and moves upward to close the mixed water channel, when the pressure relief hole is released to open, the switch piston is moved downward by the water pressure to open the channel, the whole is similar to the push-button self-locking mechanism of a ballpoint pen.

[0004] However, the aforementioned existing technologies still have the following problems: Firstly, the switch mechanism is complex and relies on pen-style self-locking. To achieve press-to-open / close, additional components such as pressure relief holes, switching rods, plugs, switch pistons, and compression springs that specifically cooperate with the bottom of the housing must be configured. The number of parts is not significantly reduced due to "integration." Furthermore, the pressing mechanism has multiple locking points and friction points. With long-term use, problems such as poor sealing of the pressure relief holes, failure of self-locking, and poor rebound may occur due to scale or spring fatigue.

[0005] Secondly, although the shape memory alloy springs used in the above-mentioned existing technologies are temperature sensing elements, their stability and manufacturability are weaker than those of conventional rod-shaped temperature sensing elements. When shape memory alloy springs are used as both temperature sensing and force application elements, their elasticity curve decays with thermal cycling, making batch consistency difficult to control. Furthermore, calcium and magnesium scale easily accumulates between the spring coils, leading to sluggish expansion and contraction. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an integrated thermostatic valve core. The valve body's on / off control is achieved through the threaded engagement of the drive sleeve and the sealing sleeve, integrating on / off, temperature regulation, and thermostatic functions into a single valve core. This eliminates the need for pressure relief holes, switching rods, plugs, and compression springs specifically designed for the bottom of the valve housing required in traditional press-lock mechanisms, simplifying the overall valve core structure and reducing assembly steps. Furthermore, a temperature rod is used as the temperature sensing element. The temperature rod's direct axial expansion and contraction due to heat drives a lifting block to adjust the effective opening of the hot and cold water inlets. The overall rod-shaped structure of the temperature rod eliminates inter-ring friction and scaling gaps, offering superior temperature displacement linearity, batch consistency, and scale resistance compared to shape memory alloy springs.

[0007] To address the problems of existing technologies, this invention provides an integrated thermostatic valve core, comprising a valve body. The valve body has a water outlet, a cold water inlet, and a hot water inlet sequentially formed vertically from top to bottom on its side wall. The valve core further includes a hot and cold water regulating component, vertically disposed within the valve body. The hot and cold water regulating component includes a lifting block, which is vertically movable between the cold water inlet and the hot water inlet. When the lifting block rises, the effective water inlet volume at the cold water inlet decreases, and the effective water inlet volume at the hot water inlet increases. When the lifting block descends, the effective water inlet volume at the cold water inlet... As the inlet water volume increases, the effective inlet water volume at the hot water inlet decreases; a temperature rod is vertically mounted on the upper part of the lifting block, with its bottom abutting against the lifting block; an adjustment unit is mounted on the upper part of the temperature rod along the axis of the valve body, used to drive the temperature rod to rise and fall; a drive sleeve is rotatably mounted on the upper part of the valve body along the axis of the valve body, and the adjustment unit passes through the drive sleeve along the axis of the valve body; a sealing sleeve is mounted on the lower part of the drive sleeve and threadedly engaged with the drive sleeve, the drive sleeve is used to drive the sealing sleeve to move along the axis of the valve body, and the sealing sleeve is used to seal the outlet.

[0008] Preferably, the hot and cold water control assembly includes: a first spring, disposed below the lifting block along the axis of the valve body, with both ends of the first spring fixedly connected to the bottom of the lifting block and the valve body respectively; and a drain groove, vertically extending through the lifting block, with the water outlet connected to the hot water inlet through the drain groove.

[0009] Preferably, the adjustment unit includes: a pressing rod, which is movably disposed within the valve body along the axis of the valve body; a first adjustment sleeve, which is rotatably disposed within the drive sleeve about the axis of the valve body, wherein the upper part of the pressing rod extends to the lower part of the first adjustment sleeve and is threadedly engaged with the first adjustment sleeve; and an adjustment knob, which is disposed above the first adjustment sleeve and is used to drive the first adjustment sleeve to rotate.

[0010] Preferably, a lifting groove is formed inside the drive sleeve along the axis of the valve body. The lifting groove is located below the first adjusting sleeve. A follower ring is moved vertically in the lifting groove. The follower ring is coaxially fixed on the pressing rod. A first limiting groove is vertically formed on the outer peripheral side wall of the follower ring. A first limiting block is vertically formed on the groove wall of the lifting groove. The first limiting groove and the first limiting block slide in a vertical direction.

[0011] Preferably, the follower ring has a vertically penetrating vent hole.

[0012] Preferably, when the pressing rod moves vertically, it forms a moving path, and when the pressing rod moves from the highest point of the moving path to the lowest point of the moving path, the rotation angle of the first adjusting sleeve is less than 360 degrees.

[0013] Preferably, the drive sleeve further includes an adjustment cavity located above the lifting groove. The upper inner wall of the adjustment cavity is fixedly provided with multiple positioning blocks evenly distributed around the valve body axis. The adjustment unit further includes: a second adjustment sleeve, movably disposed above the first adjustment sleeve along the valve body axis; the first adjustment sleeve and the second adjustment sleeve rotate synchronously; the lower part of the second adjustment sleeve extends to the upper part of the first adjustment sleeve and slides in cooperation with the first adjustment sleeve; multiple positioning grooves evenly distributed around the valve body axis on the outer periphery of the second adjustment sleeve; the positioning grooves can slide in cooperation with the positioning blocks; and a second spring disposed between the second adjustment sleeve and the first adjustment sleeve along the valve body axis, with both ends of the second spring fixedly connected to the second adjustment sleeve and the first adjustment sleeve, respectively.

[0014] Preferably, the upper part of the drive sleeve is provided with multiple temperature scale lines around the axis of the valve body, and an indicator plate is provided on the side of the adjustment knob, the indicator plate rotating synchronously with the adjustment knob.

[0015] Preferably, the upper part of the second adjusting sleeve is provided with a insertion groove along the axis of the valve body, and a protrusion is provided on the inner wall of the insertion groove. The lower part of the adjusting knob is inserted into the insertion groove, and a groove is vertically provided on the lower part of the adjusting knob. The protrusion and the groove slide in a vertical direction.

[0016] Preferably, a baffle is vertically arranged on the upper part of the valve body, and a limiting piece is sleeved on the outer periphery of the drive sleeve. The limiting piece rotates synchronously with the drive sleeve, and the baffle is used to limit the limiting piece.

[0017] The advantages of this invention compared to the prior art are: 1. This invention achieves valve body switching control through the threaded engagement of the drive sleeve and the sealing sleeve, integrating switching, temperature regulation, and constant temperature functions into the same valve core. This eliminates the need for pressure relief holes, switching rods, plugs, and compression springs specifically designed for the bottom of the valve shell required in traditional pressing self-locking mechanisms, simplifying the overall valve core structure and reducing assembly steps. Simultaneously, a temperature rod is used as the temperature sensing element. The temperature rod's direct axial expansion and contraction due to heat drives the lifting block to adjust the effective opening of the hot and cold water inlets. The overall rod-shaped structure of the temperature rod eliminates inter-ring friction and scaling gaps, offering superior temperature displacement linearity, batch consistency, and scale resistance compared to shape memory alloy springs, thus improving the stability and reliability of constant temperature regulation.

[0018] 2. By engaging the positioning groove on the second adjusting sleeve with the positioning block inside the adjusting cavity, the first adjusting sleeve and the pressing rod are rotated and limited after adjustment. This helps reduce the possibility of height deviation of the lifting block under the action of the reset spring, thereby maintaining the constantness of the hot and cold water ratio. The temperature scale line on the upper part of the drive sleeve and the indicator plate provide users with intuitive visual feedback, which helps to improve the convenience of temperature setting. At the same time, the cooperation between the protrusion and the groove can limit the pointing position of the indicator plate, ensuring the accuracy of the temperature scale line indicated by the indicator plate. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of an integrated thermostatic valve core according to the present invention.

[0020] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 3 This is a side view of an integrated thermostatic valve core of the present invention when it is in the open position.

[0022] Figure 4 yes Figure 3 Schematic diagram of cross-section at point BB.

[0023] Figure 5 yes Figure 4 A magnified view of a portion of point C.

[0024] Figure 6 This is a cross-sectional three-dimensional schematic diagram of an integrated thermostatic valve core of the present invention when it is in the open position.

[0025] Figure 7 yes Figure 6 A magnified view of a portion of point D.

[0026] Figure 8 This is a cross-sectional three-dimensional schematic diagram of an integrated thermostatic valve core of the present invention when it is closed.

[0027] Figure 9 This is a partial cross-sectional three-dimensional schematic diagram of the adjusting knob in the integrated thermostatic valve core of the present invention when it is removed.

[0028] Figure 10 yes Figure 9 A magnified view of a portion of point E in the middle.

[0029] Figure 11 yes Figure 9 A magnified view of a portion of point F in the middle.

[0030] Figure 12 This is a three-dimensional schematic diagram of an integrated thermostatic valve core of the present invention after part of the valve body has been removed.

[0031] Figure 13 This is an exploded three-dimensional schematic diagram of the regulating unit component in an integrated thermostatic valve core according to the present invention.

[0032] The following are the labels in the diagram: 1. Valve body; 11. Outlet; 12. Cold water inlet; 13. Hot water inlet; 14. Hot and cold water control assembly; 141. Lifting block; 142. First spring; 143. Drain groove; 2. Temperature rod; 3. Adjustment unit; 31. Press rod; 32. First adjustment sleeve; 321. Second limit groove; 33. Adjustment knob; 331. Indicator plate; 332. Groove; 34. Follower ring; 341. First limit groove; 342. Vent hole; 35. Second adjustment sleeve; 351. Positioning groove; 352. Second limit block; 353. Insertion groove; 354. Protrusion; 36. Second spring; 4. Drive sleeve; 41. Lifting groove; 411. First limit block; 42. Adjustment cavity; 421. Positioning block; 43. Temperature scale line; 5. Sealing sleeve; 6. Baffle; 7. Limiting plate. Detailed Implementation

[0033] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 6An integrated thermostatic valve core includes a valve body 1. The valve body 1 has a water outlet 11, a cold water inlet 12, and a hot water inlet 13 sequentially arranged vertically from top to bottom on its side wall. The valve core also includes a hot and cold water control assembly 14, vertically disposed within the valve body 1. The hot and cold water control assembly 14 includes a lifting block 141, which is vertically movable between the cold water inlet 12 and the hot water inlet 13. When the lifting block 141 rises, the effective water intake at the cold water inlet 12 decreases, and the effective water intake at the hot water inlet 13 increases. When the lifting block 141 falls, the effective water intake at the cold water inlet 12 increases. In addition, the effective water intake at the hot water inlet 13 is reduced; the temperature rod 2 is vertically arranged on the upper part of the lifting block 141, and the bottom of the temperature rod 2 abuts against the lifting block 141; the adjustment unit 3 is arranged on the upper part of the temperature rod 2 along the axis of the valve body 1, and is used to drive the temperature rod 2 to rise and fall; the drive sleeve 4 is rotatably arranged on the upper part of the valve body 1 along the axis of the valve body 1, and the adjustment unit 3 passes through the drive sleeve 4 along the axis of the valve body 1; the sealing sleeve 5 is arranged on the lower part of the drive sleeve 4 and is threadedly engaged with the drive sleeve 4, the drive sleeve 4 is used to drive the sealing sleeve 5 to move along the axis of the valve body 1, and the sealing sleeve 5 is used to seal the water outlet 11.

[0035] When using this integrated thermostatic valve core, place the faucet handle on the drive sleeve 4. By rotating the drive sleeve 4, the sealing sleeve 5 at its lower part moves along the axis of the valve body 1. When the sealing sleeve 5 moves to the highest position, the valve body 1 normally discharges water. When the sealing sleeve 5 moves to the lowest position, it closes the water outlet 11, thereby realizing the on / off control of the valve body 1.

[0036] When the outlet water temperature needs to be adjusted, press the adjustment unit 3 along the axis of the valve body 1 to release its rotation limit. Then rotate the adjustment unit 3, which drives the temperature rod 2 at its lower part to rise and fall synchronously. When the temperature rod 2 falls, press the lifting block 141 to move it downward in the vertical direction. The falling of the lifting block 141 increases the effective water intake at the cold water inlet 12 and decreases the effective water intake at the hot water inlet 13. Conversely, since the lower part of the lifting block 141 is equipped with a first spring 142, when the temperature rod 2 rises, the lifting block 141 moves upward under the reset force of the first spring 142, which decreases the effective water intake at the cold water inlet 12 and increases the effective water intake at the hot water inlet 13, thereby realizing the adjustment of the ratio of cold and hot water intake.

[0037] After adjustment, during use, cold water and hot water mix in valve body 1, and the temperature of the mixed water is transferred to the temperature rod 2. The temperature rod 2 extends when heated or shortens when cooled. When the water temperature is too high, the temperature rod 2 extends and pushes the lifting block 141 to move further down, reducing the effective water intake at the hot water inlet 13 and increasing the effective water intake at the cold water inlet 12. The water temperature decreases after mixing. When the water temperature is too low, the temperature rod 2 shortens, and the lifting block 141 moves up under the action of the reset spring, increasing the effective water intake at the hot water inlet 13 and decreasing the effective water intake at the cold water inlet 12. The water temperature rises after mixing, thus achieving automatic constant temperature regulation of the outlet water temperature.

[0038] This integrated thermostatic valve core integrates on / off control, temperature regulation, and thermostatic function into the same valve body 1. The valve body 1 is opened and closed through the threaded engagement of the drive sleeve 4 and the sealing sleeve 5, avoiding problems such as incomplete sealing of the pressure relief hole, self-locking failure, and poor rebound caused by the press-locking mechanism in traditional solutions. This simplifies the component configuration of the switch structure. A temperature rod 2 is used as the temperature sensing element. The temperature rod 2 directly extends and retracts along the axis when heated, which drives the lifting block 141 to adjust the effective opening of the cold water inlet 12 and the hot water inlet 13. The overall rod-shaped structure of the temperature rod 2 has no inter-ring friction or scale gaps. Compared with memory alloy springs, it has better temperature displacement linearity, batch consistency, and scale resistance, which helps to improve the stability and reliability of thermostatic regulation.

[0039] Reference Figure 5 and Figure 6 The hot and cold water control assembly 14 includes: a first spring 142, which is disposed below the lifting block 141 along the axis of the valve body 1, and the two ends of the first spring 142 are fixedly connected to the bottom of the lifting block 141 and the valve body 1 respectively; a drain groove 143, which is vertically opened through the lifting block 141, and the water outlet 11 is connected to the hot water inlet 13 through the drain groove 143.

[0040] When the integrated thermostatic valve core is working, the first spring 142 is set below the lifting block 141 along the axis of the valve body 1. When the temperature rod 2 is cooled and shortened, the first spring 142 releases the stored elastic potential energy to push the lifting block 141 to move upward in the vertical direction, thereby increasing the effective water intake at the hot water inlet 13 and decreasing the effective water intake at the cold water inlet 12, thus raising the temperature of the mixed water and realizing automatic temperature compensation in the thermostatic feedback. The drain trough 143 is vertically opened through the lifting block 141. The hot water flowing into the hot water inlet 13 is discharged through the drain trough 143 to the upper part of the lifting block 141 and mixed with the cold water. The temperature of the mixed water can be transmitted to the upper part of the temperature rod 2, so that the temperature rod 2 can sense the temperature of the mixed water and make a contraction and expansion response.

[0041] Reference Figure 8The adjustment unit 3 includes: a pressing rod 31, which is movable within the valve body 1 along the axis of the valve body 1; a first adjusting sleeve 32, which is rotatably disposed within the drive sleeve 4 about the axis of the valve body 1, wherein the upper part of the pressing rod 31 extends to the lower part of the first adjusting sleeve 32 and is threadedly engaged with the first adjusting sleeve 32; and an adjusting knob 33, which is disposed above the first adjusting sleeve 32 and is used to drive the first adjusting sleeve 32 to rotate.

[0042] When the first adjusting sleeve 32 is rotated, the pressing rod 31 moves vertically up and down along the axis of the valve body 1 under the action of threaded transmission, thereby pressing or releasing the temperature rod 2; the adjusting knob 33 is located above the first adjusting sleeve 32, and the user can adjust the position of the pressing rod 31 by operating the adjusting knob 33 to drive the first adjusting sleeve 32 to rotate.

[0043] By using a threaded connection, the rotational motion is converted into the axial linear displacement of the pressing rod 31. Through the sequential transmission of the adjusting knob 33, the first adjusting sleeve 32 and the pressing rod 31, the user can set the pressing depth of the temperature rod 2 more accurately, thereby determining the initial height of the lifting block 141 and the hot and cold water ratio.

[0044] Reference Figure 11 and Figure 12 The drive sleeve 4 has a lifting groove 41 along the axis of the valve body 1. The lifting groove 41 is located below the first adjusting sleeve 32. A follower ring 34 is vertically movable in the lifting groove 41. The follower ring 34 is coaxially fixed on the pressing rod 31. A first limiting groove 341 is vertically opened on the outer peripheral side wall of the follower ring 34. A first limiting block 411 is vertically arranged on the groove wall of the lifting groove 41. The first limiting groove 341 and the first limiting block 411 slide in the vertical direction.

[0045] When the first adjusting sleeve 32 rotates, the follower ring 34, together with the pressing rod 31, is restricted from rotating around the axis by the cooperation of the first limiting groove 341 and the first limiting block 411. This ensures that the pressing rod 31 can only move vertically along the axis of the valve body 1 and cannot rotate circumferentially. This ensures that the pressing rod 31 always moves smoothly along the axial direction during the lifting and lowering process, avoiding the loosening of the threaded fit due to the circumferential rotation of the pressing rod 31, or the situation where the pressing rod 31 rotates and rises on its own, thus improving the stability of the hot and cold water ratio adjustment.

[0046] Reference Figure 11 and Figure 12 The follower ring 34 has a vertically penetrating vent hole 342.

[0047] When the integrated thermostatic valve core is working, the vertically penetrating vent 342 on the follower ring 34 connects the internal space of the lifting groove 41 with the upper space of the valve body 1. As the pressing rod 31 drives the follower ring 34 to move in the vertical direction, the vent 342 can balance the air pressure on the upper and lower sides of the follower ring 34, reducing the air compression resistance caused by the cavity being closed.

[0048] Reference Figure 7 and Figure 11 When the pressing rod 31 moves vertically, it forms a moving path. When the pressing rod 31 moves from the highest point of the moving path to the lowest point of the moving path, the rotation angle of the first adjusting sleeve 32 is less than 360 degrees.

[0049] When the pressing rod 31 moves from the highest point to the lowest point of the moving path, the rotation angle of the first adjusting sleeve 32 is limited to less than 360 degrees. That is, the rotation range of the first adjusting sleeve 32 corresponding to the pressing rod 31 completing one full stroke of lifting and lowering does not exceed one revolution. This allows the user to complete the water temperature setting without having to rotate it multiple times, making the operation more intuitive and convenient.

[0050] Reference Figure 9 , Figure 10 and Figure 13 The drive sleeve 4 is further provided with an adjustment cavity 42, which is located above the lifting groove 41. Multiple positioning blocks 421, evenly distributed around the axis of the valve body 1, are fixedly arranged on the upper inner wall of the adjustment cavity 42. The adjustment unit 3 further includes: a second adjustment sleeve 35, which is movably disposed above the first adjustment sleeve 32 along the axis of the valve body 1. The first adjustment sleeve 32 and the second adjustment sleeve 35 rotate synchronously. The lower part of the second adjustment sleeve 35 extends to the upper part of the first adjustment sleeve 32 and slides in cooperation with the first adjustment sleeve 32. Multiple positioning grooves 351 are evenly distributed around the axis of the valve body 1 on the outer periphery of the second adjustment sleeve 35. The positioning grooves 351 can slide in cooperation with the positioning blocks 421. A second spring 36 is disposed between the second adjustment sleeve 35 and the first adjustment sleeve 32 along the axis of the valve body 1. The two ends of the second spring 36 are fixedly connected to the second adjustment sleeve 35 and the first adjustment sleeve 32, respectively.

[0051] A second limiting groove 321 is vertically provided on the upper part of the first adjusting sleeve 32, and a second limiting block 352 is vertically provided on the lower part of the second adjusting sleeve 35. The second limiting groove 321 and the second limiting block 352 are slidably engaged.

[0052] Under normal conditions, the second spring 36 pushes the second adjusting sleeve 35 upward, causing the positioning groove 351 on the outer periphery of the second adjusting sleeve 35 to engage with the positioning block 421 on the upper part of the inner wall of the adjusting cavity 42, thereby locking the second adjusting sleeve 35 and the first adjusting sleeve 32 in a circumferentially fixed state. At this time, the pressing rod 31 cannot rotate, and the axial position of the temperature rod 2 is maintained. When it is necessary to adjust the water temperature, the second adjusting sleeve 35 is pressed downward, the positioning groove 351 disengages from the positioning block 421, and the second spring 36 is compressed. At this time, rotating the adjusting knob 33 drives the second adjusting sleeve 35 and the first adjusting sleeve 32 to rotate synchronously, and the pressing rod 31 rises and falls under the thread drive to adjust the position of the temperature rod 2. After the adjustment is completed, the second adjusting sleeve 35 is released, the second spring 36 returns to its original position, and the positioning groove 351 re-engages with the positioning block 421, restoring the rotation limit.

[0053] The rotation locking and unlocking of the adjustment unit 3 is achieved by the insertion and cooperation of the positioning groove 351 and the positioning block 421. After the adjustment is completed, the circumferential displacement of the first adjustment sleeve 32 and the pressing rod 31 can be effectively limited, which helps to reduce the possibility of the lifting block 141 shifting its height under the action of the reset spring force, thereby maintaining the constantness of the hot and cold water ratio.

[0054] Reference Figure 2 The upper part of the drive sleeve 4 is provided with multiple temperature scale lines 43 around the axis of the valve body 1, and the side of the adjustment knob 33 is provided with an indicator plate 331, which rotates synchronously with the adjustment knob 33.

[0055] When the user rotates the adjustment knob 33 to drive the push rod 31 to rise and fall to adjust the water temperature, the indicator 331 points to the corresponding position on the temperature scale line 43. The user can know the current set temperature by observing the scale corresponding to the indicator 331.

[0056] Reference Figure 10 and Figure 13 The upper part of the second adjusting sleeve 35 is provided with a insertion groove 353 along the axis of the valve body 1. A protrusion 354 is provided on the inner wall of the insertion groove 353. The lower part of the adjusting knob 33 is inserted into the insertion groove 353. A groove 332 is vertically provided on the lower part of the adjusting knob 33. The protrusion 354 and the groove 332 slide in the vertical direction.

[0057] When the integrated thermostatic valve core is working, the lower part of the adjusting knob 33 is inserted into the insertion groove 353 on the upper part of the second adjusting sleeve 35. The protrusion 354 on the inner wall of the insertion groove 353 slides vertically with the groove 332 on the lower part of the adjusting knob 33. When the adjusting knob 33 is pressed down, the protrusion 354 slides in the groove 332 and drives the second adjusting sleeve 35 to move down against the elastic force of the second spring 36, so that the positioning groove 351 disengages from the positioning block 421. At the same time, the engagement between the protrusion 354 and the groove 332 transmits circumferential torque, so that the adjusting knob 33 can drive the second adjusting sleeve 35 and the first adjusting sleeve 32 to rotate synchronously.

[0058] In addition, the cooperation between the protrusion 354 and the groove 332 can limit the pointing position of the indicator plate 331. In this invention, only one protrusion 354 is provided. The cooperation between one protrusion 354 and one groove 332 ensures the accuracy of the temperature scale line 43 pointed to by the indicator plate 331.

[0059] Reference Figure 1 A baffle 6 is vertically arranged on the upper part of the valve body 1, and a limiting piece 7 is sleeved on the outer periphery of the drive sleeve 4. The limiting piece 7 rotates synchronously with the drive sleeve 4, and the baffle 6 is used to limit the limiting piece 7.

[0060] When the valve core is in normal use, the adjusting knob 33 needs to be removed from the upper part of the drive sleeve 4, and the faucet handle needs to be installed on the drive sleeve 4 for normal use. When turning the water on or off, turn the faucet handle to drive the drive sleeve 4 to rotate. The limiting piece 7 set on the drive sleeve 4 can limit the rotation angle of the drive sleeve 4. That is, when one of the limiting pieces 7 contacts the baffle 6 set on the upper part of the valve body 1, the valve body 1 normally discharges water. At this time, the sealing sleeve 5 is in the highest position. If the other limiting piece 7 contacts the baffle 6 set on the valve body 1, the valve body 1 is closed. At this time, the sealing sleeve 5 is in the lowest position and closes the water outlet 11.

[0061] Working principle: When the water temperature needs to be adjusted, remove the faucet handle and then insert the adjustment knob 33 from the top of the drive sleeve 4. During insertion, ensure that the groove 332 on the adjustment knob 33 aligns with the protrusion 354 on the second adjustment sleeve 35. After the groove 332 and protrusion 354 are fully engaged, press the adjustment knob 33. This ensures that the temperature scale line 43 indicated by the indicator plate 331 on one side of the adjustment knob 33 corresponds to the preset water temperature. To determine if the groove 332 and protrusion 354 are engaged, observe whether the bottom of the indicator plate 331 on one side of the adjustment knob 33 contacts the upper surface of the drive sleeve 4. If the bottom of the indicator plate 331 contacts the upper surface of the drive sleeve 4, then the groove 332 and protrusion 354 are fully engaged.

[0062] After confirming that the adjusting knob 33 is fully inserted into the insertion slot 353 in the second adjusting sleeve 35, press the second adjusting sleeve 35 down, causing it to descend. At this time, the positioning slot 351 disengages from the positioning block 421 on the inner wall of the adjusting cavity 42, and the second spring 36 between the first adjusting sleeve 32 and the second adjusting sleeve 35 is gradually compressed. When the second adjusting sleeve 35 stops descending, its bottom contacts the upper part of the first adjusting sleeve 32. Then, turn the adjusting knob 33, causing the second adjusting sleeve 35 and the first adjusting sleeve 32 to rotate synchronously. Since the first adjusting sleeve 32 is threadedly engaged with the upper part of the pressing rod 31, and the follower ring 34 and the lifting groove 41 are limited by the first limiting block 411 and the first limiting groove 341, the pressing rod 31 can only move vertically, thus realizing the vertical lifting and lowering of the pressing rod 31.

[0063] Taking the descent of the pressing rod 31 as an example, the lower end of the pressing rod 31 presses the upper end of the heating rod 2. After the heating rod 2 is pressed, the lifting block 141 descends synchronously with the heating rod 2 and squeezes the first spring 142. At this time, the hot water inlet 13 is blocked by the lifting block 141, causing the effective water intake of the hot water inlet 13 to gradually decrease, while the effective water intake of the cold water inlet 12 gradually increases as the lifting block 141 descends and makes room. By adjusting the height of the lifting block 141, the ratio of hot and cold water intake can be adjusted, thereby adjusting the water temperature.

[0064] After adjusting the water temperature to the specified temperature, the position indicated by the indicator 331 on the temperature scale 43 can be used to determine whether the specified water temperature has been reached. Then, the adjustment knob 33 is removed, and the second adjustment sleeve 35 rises under the return force of the second spring 36, causing the positioning groove 351 on the second adjustment sleeve 35 to engage with the positioning block 421 of the adjustment cavity 42, thereby limiting the rotation of the second adjustment sleeve 35. Since the first adjustment sleeve 32 and the second adjustment sleeve 35 always rotate synchronously, when the second adjustment sleeve 35 is restricted from rotating, the first adjustment sleeve 32 also cannot rotate. This prevents the pressing rod 31 from pushing the first adjustment sleeve 32 to rotate in the opposite direction under the return force of the first spring 142, and thus prevents the height of the adjusted lifting block 141 from shifting due to the lack of the pushing force of the temperature rod 2, ensuring the constantness of the hot and cold water ratio.

[0065] As a supplement, the temperature rod 2 expands and contracts with temperature. When the temperature is too high, the temperature rod 2 will lengthen; when the temperature is too low, the temperature rod 2 will shorten. Due to the influence of the supplied water temperature, the temperature of the cold water supplied to the cold water inlet 12 and the temperature of the hot water supplied to the hot water inlet 13 fluctuate during actual use. Cold water flows directly to the upper part of the lifting block 141 through the cold water inlet 12, while hot water flows into the lower part of the lifting block 141 through the hot water inlet 13, and then flows to the upper part of the lifting block 141 through the drain trough 143. At this time, the hot and cold water mix, and the temperature of the mixed water flow can be conducted to the upper part of the temperature rod 2, causing the temperature rod 2 to expand and contract due to the influence of the external temperature. If the water temperature... If the temperature is too high, the heating rod 2 will extend. Under the action of the pressing rod 31, the extended heating rod 2 will further press the lifting block 141, which will reduce the effective water intake of the hot water inlet 13 and increase the effective water intake of the cold water inlet 12, thereby lowering the water temperature after mixing. Conversely, if the water temperature is too low, the heating rod 2 will shorten, and the compressed first spring 142 will push the lifting block 141 to rise. At this time, the effective water intake at the hot water inlet 13 will increase, and the effective water intake at the cold water inlet 12 will decrease, thereby raising the water temperature after mixing.

[0066] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. An integrated thermostatic valve core, comprising a valve body (1), wherein a water outlet (11), a cold water inlet (12) and a hot water inlet (13) are sequentially provided on the side wall of the valve body (1) in the vertical direction from top to bottom. Its features are, The valve core also includes: A hot and cold water control assembly (14) is vertically installed inside the valve body (1). The hot and cold water control assembly (14) includes a lifting block (141), which is vertically movable between the cold water inlet (12) and the hot water inlet (13). When the lifting block (141) rises, the effective water intake at the cold water inlet (12) decreases, and the effective water intake at the hot water inlet (13) increases. When the lifting block (141) descends, the effective water intake at the cold water inlet (12) increases, and the effective water intake at the hot water inlet (13) decreases. A heating rod (2) is vertically arranged on the upper part of the lifting block (141), and the bottom of the heating rod (2) abuts against the lifting block (141); An adjustment unit (3) is arranged on the upper part of the temperature rod (2) along the axis of the valve body (1) and is used to drive the temperature rod (2) to rise and fall. The drive sleeve (4) is rotatably disposed on the upper part of the valve body (1) along the axis of the valve body (1), and the adjustment unit (3) passes through the drive sleeve (4) along the axis of the valve body (1). A sealing sleeve (5) is disposed at the lower part of the drive sleeve (4) and threadedly engaged with the drive sleeve (4). The drive sleeve (4) is used to drive the sealing sleeve (5) to move along the axis of the valve body (1). The sealing sleeve (5) is used to seal the outlet (11).

2. The integrated thermostatic valve core according to claim 1, characterized in that, The hot and cold water control component (14) includes: A first spring (142) is disposed below the lifting block (141) along the axis of the valve body (1), and the two ends of the first spring (142) are fixedly connected to the bottom of the lifting block (141) and the valve body (1), respectively. A drain trough (143) is vertically opened through the lifting block (141), and the water outlet (11) is connected to the hot water inlet (13) through the drain trough (143).

3. The integrated thermostatic valve core according to claim 1, characterized in that, The adjustment unit (3) includes: The pressing rod (31) is movable within the valve body (1) along the axis of the valve body (1); The first adjusting sleeve (32) is rotatably disposed in the drive sleeve (4) about the axis of the valve body (1), and the upper part of the pressing rod (31) extends to the lower part of the first adjusting sleeve (32) and is threadedly engaged with the first adjusting sleeve (32). An adjustment knob (33) is located above the first adjustment sleeve (32) and is used to drive the first adjustment sleeve (32) to rotate.

4. An integrated thermostatic valve core according to claim 3, characterized in that, The drive sleeve (4) has a lifting groove (41) along the axis of the valve body (1). The lifting groove (41) is located below the first adjusting sleeve (32). A follower ring (34) is moved vertically in the lifting groove (41). The follower ring (34) is coaxially fixed on the pressing rod (31). A first limiting groove (341) is vertically opened on the outer peripheral side wall of the follower ring (34). A first limiting block (411) is vertically arranged on the groove wall of the lifting groove (41). The first limiting groove (341) and the first limiting block (411) slide in the vertical direction.

5. An integrated thermostatic valve core according to claim 4, characterized in that, The follower ring (34) has a vertically penetrating vent hole (342).

6. An integrated thermostatic valve core according to claim 4, characterized in that, When the pressing rod (31) moves vertically, it forms a moving path. When the pressing rod (31) moves from the highest point of the moving path to the lowest point of the moving path, the rotation angle of the first adjusting sleeve (32) is less than 360 degrees.

7. An integrated thermostatic valve core according to claim 6, characterized in that, The drive sleeve (4) is also provided with an adjustment cavity (42), which is located above the lifting groove (41). Multiple positioning blocks (421) are fixedly arranged on the upper inner wall of the adjustment cavity (42) and evenly distributed around the axis of the valve body (1). The adjustment unit (3) further includes: The second adjusting sleeve (35) is moved along the axis of the valve body (1) and disposed on the upper part of the first adjusting sleeve (32). The first adjusting sleeve (32) and the second adjusting sleeve (35) rotate synchronously. The lower part of the second adjusting sleeve (35) extends to the upper part of the first adjusting sleeve (32) and slides in cooperation with the first adjusting sleeve (32). The positioning groove (351) has multiple grooves and is evenly opened around the axis of the valve body (1) on the outer periphery of the second adjusting sleeve (35). The positioning groove (351) can slide with the positioning block (421). The second spring (36) is disposed between the second adjusting sleeve (35) and the first adjusting sleeve (32) along the axis of the valve body (1), and the two ends of the second spring (36) are fixedly connected to the second adjusting sleeve (35) and the first adjusting sleeve (32) respectively.

8. An integrated thermostatic valve core according to claim 6, characterized in that, The upper part of the drive sleeve (4) is provided with multiple temperature scale lines (43) around the axis of the valve body (1), and the side of the adjustment knob (33) is provided with an indicator plate (331), which rotates synchronously with the adjustment knob (33).

9. An integrated thermostatic valve core according to claim 7, characterized in that, The upper part of the second adjusting sleeve (35) is provided with a insertion groove (353) along the axis of the valve body (1). A protrusion (354) is provided on the inner wall of the insertion groove (353). The lower part of the adjusting knob (33) is inserted into the insertion groove (353). A groove (332) is vertically provided on the lower part of the adjusting knob (33). The protrusion (354) and the groove (332) slide in the vertical direction.

10. An integrated thermostatic valve core according to claim 1, characterized in that, A baffle (6) is vertically arranged on the upper part of the valve body (1), and a limiting piece (7) is sleeved on the outer periphery of the drive sleeve (4). The limiting piece (7) rotates synchronously with the drive sleeve (4), and the baffle (6) is used to limit the limiting piece (7).

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