Drawing type low-position flow adjusting faucet

Abstract

The invention discloses a pull-out type low-position flow regulation faucet, belongs to the technical field of flow regulation and control, and solves the problem that when a pull-out head is not pulled down, once a water flow mode enters a shower mode, splashing tap water sprayed on an object can even be sprayed to the position outside a water tank. Comprising a faucet pipe and a drawing head communicated with the faucet pipe through a drawing hose, the drawing head can be detachably connected with the faucet pipe, the drawing head has a bubble water mode and a shower mode which can be switched, and a distance control circuit is arranged on the drawing head. When water flows out of the drawing type faucet, a bubble water mode is mainly adopted, and splashing caused by too fast water flow is avoided. A user can pull down the spray head and press the button, so that water is switched from the first flow channel to the second flow channel, and conversion from a bubble water mode to a shower mode is achieved. Water flow and flow velocity can be manually controlled by adjusting the linear sliding potentiometer, and articles can be cleaned. And after the drawing head is returned, the water flow is automatically reduced and is switched back to the bubble mode to prevent splashing.

Description

Technical Field

[0001] The invention relates to the technical field of flow control, and in particular to a pull-out low-position flow regulating faucet. Background Art

[0002] The pull-out faucet is a modern kitchen feature that is favored by users for its flexibility and convenience. The design of this faucet allows the user to release the spray head from a fixed position by pulling it, so that it can be moved freely around the sink, providing a wider range of use. The pull-out faucet is usually equipped with a retractable hose, so that the spray head can be easily pulled out and pushed back, which is convenient for cleaning all corners of the sink or rinsing different items in the kitchen.

[0003] In addition to its flexibility, pull-out faucets are often equipped with multi-function spray heads that can provide different water flow modes, such as soft bubble water mode and powerful shower water mode. These modes can be easily switched by a switch or button on the faucet to meet the needs of users in different scenarios. For example, the bubble water mode is suitable for daily hand washing and face washing, while the shower water mode is more suitable for quick rinsing or cleaning tasks.

[0004] Pull-out faucets are generally relatively simple to install and can be fitted to most standard sinks. Not only do they enhance the aesthetics of your home, they are also a popular choice for modern home decor due to their practicality and innovative design. Whether you are preparing food in the kitchen or enjoying a relaxing moment in the bathroom, pull-out faucets provide extra convenience and comfort.

[0005] In actual use, people use the switch button on the pull-out head to switch between the two water flow modes. However, usually, due to the strong water flow in the shower mode, a large amount of tap water will splash when spraying on objects. Therefore, people need to manually press the switch button back after each use to switch the water flow mode from the shower mode to the bubble water mode. When the pull-out head is not pulled down, once the water flow mode enters the shower mode, the tap water splashing on the object may even spray to a position outside the sink. Therefore, the current pull-out faucet is inconvenient to use and easily causes the environment to be wet.

[0006] In the prior art, there is a pull-out faucet with application number CN202110535791.8, and its technical points are as follows: it includes a faucet body, a pull-out hose, an automatic water outlet control unit and a pull-out sensing structure, the pull-out hose can be pulled out and arranged in the faucet body, and the water inlet end of the pull-out hose is connected to the water outlet end of the automatic water outlet control unit, and it is characterized in that: the pull-out sensing structure includes a sensing mark and a sensor, and the number of the sensing marks is at least two, which are arranged on the pull-out hose and are arranged at intervals along the length direction of the pull-out hose, and the sensing marks located at the two ends in the length direction are defined as an upper sensing mark and a lower sensing mark, respectively, and the sensor is used to sense the movement of the sensing mark, and in the process of the pull-out hose being pulled out, at least the upper sensing mark and the lower sensing mark can follow the movement of the pull-out hose and be sensed by the sensor, so that the pull-out hose generates a first group of sensing marks respectively during the process of pulling out and retracting. The automatic water outlet control unit controls the water outlet end to change the water outlet strategy according to the first group of sensing signals or the second group of sensing signals; the water outlet strategy is changed to turn on and off the water outlet; when the number of sensing identifiers is two, the automatic water outlet control unit controls the water outlet end to change the water outlet strategy according to the first group of sensing signals or the second group of sensing signals. Specifically, when the automatic water outlet control unit is in the water outlet closing state, the interval between the two sensing identifier moving signals is the first group of sensing signals, then the water outlet is turned on after the second sensing identifier moving signal is delayed after the first sensing identifier moving signal; when the automatic water outlet control unit is in the water outlet opening state, the interval between the two sensing identifier moving signals is the second group of sensing signals, then the water outlet is turned off after the first sensing identifier moving signal, and the water outlet is kept turned off after the second sensing identifier moving signal and the position is reset.

[0007] Compared with the existing technology, the above scheme can have a more flexible and changeable control strategy. For example, it can avoid the problem that water will flow out immediately when the pull head is pulled out, and the water will be turned off only after the pull head is reset, which will cause water to spill everywhere, affecting the user experience and not conducive to water saving. Therefore, this scheme proposes a pull-out low-position flow adjustment faucet to solve the problem that when the pull head is not pulled down, once the water flow mode enters the shower mode, the tap water splashing on the object will even spray to a position outside the sink.

[0008] Therefore, a pull-out low-position flow regulating faucet is proposed to solve or alleviate the above problems. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pull-out low-position flow regulating faucet.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A pull-out type low-position flow regulating faucet comprises a faucet pipe and a pull-out head connected to the faucet pipe through a pull-out hose, the pull-out head can be detachably connected to the faucet pipe, the pull-out head has a switchable bubble water mode and a shower mode, and a distance control circuit is provided on the pull-out head, the distance control circuit controls the mode of the pull-out head according to whether the height of the pull-out head is lower than a height threshold, when the height of the pull-out head is greater than the height threshold, the pull-out head only maintains a bubble water state, when the height of the pull-out head is lower than the height threshold, the pull-out head can switch between the bubble water mode and the shower mode, the water flow rate of the pull-out head in the shower mode can be adjusted, and when the height of the pull-out head changes from lower than the height threshold to greater than the height threshold, the pull-out head returns to the minimum water flow rate and switches back to the bubble water mode.

[0012] Preferably, the pull-out head includes a shell, a three-way solenoid valve arranged in the shell, and a bubble water outlet head and a shower water outlet head connected to the three-way solenoid valve, and a button switch and a straight sliding button are provided on the shell. The three-way solenoid valve is coupled to the distance control circuit through the button switch and the straight sliding button. The button switch is used to switch between the bubble water mode and the shower mode, and the straight sliding button is used to adjust the water flow rate of the pull-out head in the shower mode.

[0013] Preferably, the three-way solenoid valve comprises a sleeve, an inlet portion and an outlet portion fixedly connected at both ends of the sleeve, the inlet portion is connected to a cannula portion at one end away from the sleeve, an inlet channel is arranged in the inlet portion, a first channel and a second channel respectively connected to a bubble outlet head and a shower outlet head are arranged in the outlet portion, a V-shaped sphere rotatably arranged in the inlet channel for adjusting the water flow rate passing through the three-way solenoid valve is arranged, an electric actuator coupled to a distance control circuit via a straight sliding button is fixedly connected to the outer ring of the sleeve, a drive shaft of the electric actuator is fixedly connected to a valve stem penetrating into the inlet channel, and a support tube is fixedly connected to the outer ring of the sleeve, and one end of the support tube away from the sleeve A connecting tube is detachably connected, a partition is fixedly connected inside the connecting tube, an adjustment electromagnet is fixedly connected on the partition and is located inside the connecting tube and coupled to the distance control circuit through a button switch, a sealing cover is detachably connected to one end of the connecting tube away from the supporting tube, a limiting plate is slidably connected inside the supporting tube, a metal spring is fixedly connected between the limiting plate and the partition, a vertical rod that penetrates into the sleeve is fixedly connected to one side of the limiting plate away from the partition, a plurality of pillars are fixedly connected to one end of the vertical rod away from the limiting plate, a sealing plate is fixedly connected to a plurality of pillars, and the sealing plate is arranged to fit the end surface of the outlet portion, and the sealing plate only covers the entrance of the first flow channel or the second flow channel at a time.

[0014] Preferably, the outer circle of the insertion part is provided with an external thread, the inlet part and the outlet part are both threadedly connected to the inner sides of the two ends of the sleeve, the support tube and the connecting tube are also threadedly connected, the inner circle of the end of the connecting tube away from the support tube is provided with an internal thread, the connecting tube is threadedly connected to the sealing cover through the internal thread, the top and back surfaces of the sealing plate are set as planes, and the width of the sealing plate is gradually increased from the side facing the inlet part.

[0015] Preferably, the distance control circuit comprises

[0016] A distance detection circuit is arranged on the drawing head, wherein the distance detection circuit detects the height of the drawing head and outputs a distance judgment signal when the height is lower than a height threshold;

[0017] A self-cutting circuit, wherein a controlled end of the self-cutting circuit is coupled to an output end of the distance detection circuit, and the self-cutting circuit controls its output end to be energized in response to a distance determination signal;

[0018] The first relay, the switch of the first relay connects the button switch and the adjusting electromagnet to the power supply, the controlled end of the first relay is coupled to the self-cutting circuit, and the switch of the first relay is controlled by the self-cutting circuit to energize the circuit where the adjusting electromagnet is located.

[0019] Preferably, the distance detection circuit includes a distance sensor and a voltage comparator coupled to the output end of the distance sensor, and the self-shutoff circuit includes a first transistor switch, the base of the first transistor switch is coupled to the output end of the voltage comparator, the collector of the first transistor switch is connected to electricity, and the emitter of the first transistor switch is connected to the first relay and then grounded.

[0020] Preferably, the straight slide button is a straight slide potentiometer, and the straight slide potentiometer is connected to a power supply through a button switch. The distance control circuit also includes

[0021] A voltage sensor, wherein the voltage sensor detects the voltage of the circuit where the direct-sliding potentiometer is located and outputs a voltage signal;

[0022] A signal conditioning circuit, wherein the input end of the signal conditioning circuit is coupled to the output end of the voltage sensor, and the signal conditioning circuit receives the voltage signal, performs secondary operational amplification, and outputs a voltage amplification signal;

[0023] A microcontroller, wherein the output end of the signal conditioning circuit is coupled to the input end of the microcontroller, the output end of the microcontroller is coupled to the input end of the electric actuator, and the microcontroller controls the rotation angle of the drive shaft of the electric actuator in response to the voltage amplification signal.

[0024] Preferably, the signal conditioning circuit comprises a first operational amplifier and a second operational amplifier, the input terminal of the second operational amplifier is coupled to the output terminal of the first operational amplifier, and the input terminal of the first operational amplifier is coupled to the output terminal of the voltage sensor.

[0025] Preferably, the distance control circuit further includes

[0026] A recovery electromagnet, wherein the recovery electromagnet is arranged in the pull-out head, the movable end of the direct-slide potentiometer is arranged to be made of metal, and the recovery electromagnet is energized to adsorb the movable end of the direct-slide potentiometer;

[0027] A delay circuit, wherein the input end of the delay circuit is electrically connected, and the delay circuit outputs a delay signal after charging is completed;

[0028] a second relay, wherein a controlled end of the second relay is coupled to an output end of the delay circuit, and a switch of the second relay is connected between a power supply and a recovery electromagnet;

[0029] A third relay, wherein the controlled end of the third relay is connected in series with the loop where the controlled end of the first relay is located, and the switch of the third relay is connected between the power supply and the input end of the delay circuit.

[0030] Preferably, the delay circuit includes an RC delay circuit and a second transistor switch, the base of the second transistor switch is coupled to the output end of the RC delay circuit, the collector of the second transistor switch is connected to the controlled end of the second relay and then connected to an electrical setting, and the emitter of the second transistor switch is grounded.

[0031] The present invention has the following beneficial effects:

[0032] When the pull-out head of the present invention is actually used, if water is flowing, it can mainly discharge water in the bubble water mode. In this way, it can ensure that the flow rate of the water sprayed from the pull-out head will not be too fast, and the problem of splashing around due to the excessively fast water flow rate when the water is sprayed on objects can be avoided. In addition, only when the pull-out head is pulled downward by people until its height is lower than the height threshold, people can judge whether to press the button switch according to their own needs. If it is pressed, the three-way solenoid valve can be energized, and the three-way solenoid valve can switch the water flow from the first flow channel to the second flow channel, thereby switching the bubble water mode to the shower mode. At this time, since the height of the pull-out head is lower than the height threshold, then That is, the water becomes shower water, and the sink can also block the splashing water to prevent water from splashing everywhere. Then, if people have requirements for the water flow rate, they can manually push the active end of the straight slide potentiometer, that is, push the straight slide button to control the water flow and water flow rate of the three-way solenoid valve, so that the water flow in the shower mode can be sprayed on the objects for cleaning. Then, if the pull-out head is detachably connected to the faucet pipe again, it means that the height of the pull-out head is greater than the height threshold, then the water flow of the pull-out head will automatically decrease to the minimum water flow and flow rate, and then switch the water flow from the shower mode back to the bubble mode to avoid water splashing when used next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0036] Figure 3 It is a structural block diagram of the distance control circuit in the present invention;

[0037] Figure 4 It is the wiring diagram of the distance control circuit in the present invention;

[0038] Figure 5 It is a structural schematic diagram of the three-way solenoid valve in the present invention;

[0039] Figure 6 is a cross-sectional view of the three-way solenoid valve of the present invention;

[0040] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0041] Figure 8 for Figure 6 Enlarged view of point C in the middle;

[0042] Fig. 9 for Figure 6 Enlarged view of point D in the middle.

[0043] 1. Faucet pipe; 2. Pull-out head; 3. Push button switch; 4. Slide potentiometer; 5. Distance detection circuit; 6. Self-break circuit; 7. First relay; 8. Three-way solenoid valve; 9. Delay circuit; 10. Second relay; 11. Recovery electromagnet; 12. Voltage sensor; 13. Signal conditioning circuit; 14. Microcontroller; 15. Electric actuator; 16. Casing; 17. Inflow part; 18. Insertion part; 19. Outflow part; 20. First flow channel; 21. Second flow channel; 22. Support tube; 23. Connecting tube; 24. Cover; 25. Inflow channel; 26. Valve stem; 27. V-shaped sphere; 28. Vertical rod; 29. ​​Limit plate; 30. Partition; 31. Adjustment electromagnet; 32. Metal spring; 33. Pillar; 34. Cover plate. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] A pull-out low-level flow regulating faucet, such as Figure 1 As shown, it includes a faucet pipe 1 and a pull-out head 2 connected to the faucet pipe 1 through a pull-out hose. The pull-out head 2 can be detachably connected to the faucet pipe 1. The pull-out head 2 has switchable bubble water mode and shower mode, and a distance control circuit is provided on the pull-out head 2. The distance control circuit controls the mode of the pull-out head 2 according to whether the height of the pull-out head 2 is lower than the height threshold. When the height of the pull-out head 2 is greater than the height threshold, the pull-out head 2 only maintains the bubble water state. When the height of the pull-out head 2 is lower than the height threshold, the pull-out head 2 can switch between the bubble water mode and the shower mode. The water flow rate of the pull-out head 2 in the shower mode can be adjusted. When the height of the pull-out head 2 changes from lower than the height threshold to greater than the height threshold, the pull-out head 2 returns to the minimum water flow rate and switches back to the bubble water mode.

[0051] In the application example of the present invention, the pull-out faucet is designed with a bubble water mode to ensure that the water flow speed is moderate when the water is discharged, and effectively prevent the splashing caused by too fast water flow. The user can switch the water flow from the bubble water mode to the shower mode by pulling the faucet down to a certain height as needed. At this time, even if the water flow becomes a shower, the design of the sink can prevent splashing. If the water flow speed needs to be adjusted, the user can manually control the flow rate and flow rate to wash items. When the pull-out head 2 returns to its position and the height exceeds the set threshold, the water flow intensity is automatically reduced to the minimum, and the shower mode is switched back to the bubble water mode to ensure that no splashing occurs the next time it is used.

[0052] Preferably, if Figure 2 As shown, the pull-out head 2 includes a shell, a three-way solenoid valve 8 arranged in the shell, and a bubble water outlet head and a shower water outlet head connected to the three-way solenoid valve 8. A button switch 3 and a straight sliding button are provided on the shell. The three-way solenoid valve 8 is coupled to the distance control circuit through the button switch 3 and the straight sliding button. The button switch 3 is used to switch between the bubble water mode and the shower mode, and the straight sliding button is used to adjust the water flow rate of the pull-out head 2 in the shower mode.

[0053] By setting the button switch 3, when the three-way solenoid valve 8 needs to switch the water outflow to switch the bubble water mode and the shower mode, the switch can be achieved by pressing the button switch 3. When the pull-out head 2 is in the shower mode, the water flow rate in the shower mode can be adjusted by the straight sliding button. Since the straight sliding button does not have several fixed gears, when it is used to adjust the water flow, the water flow rate / flow rate can better meet the needs of users.

[0054] Preferably, if Figures 5 to 9As shown, the three-way solenoid valve 8 includes a sleeve 16, an inlet portion 17 and an outlet portion 19 fixedly connected to both ends of the sleeve 16, the inlet portion 17 is connected to the insert portion 18 at one end away from the sleeve 16, an inlet channel 25 is arranged in the inlet portion 17, and a first flow channel 20 and a second flow channel 21 respectively connected to the bubble outlet head and the shower outlet head are arranged in the outlet portion 19, a V-shaped ball 27 for adjusting the water flow rate passing through the three-way solenoid valve 8 is rotatably arranged in the inlet channel 25, an electric actuator 15 coupled to the distance control circuit through a straight sliding button is fixedly connected to the outer ring of the sleeve 16, a drive shaft of the electric actuator 15 is fixedly connected to a valve stem 26 penetrating into the inlet channel 25, and a support tube 22 is fixedly connected to the outer ring of the sleeve 16, and the support tube 22 is detachably connected to the end away from the sleeve 16 A connecting tube 23 is connected, a partition 30 is fixedly connected inside the connecting tube 23, an adjusting electromagnet 31 located inside the connecting tube 23 and coupled to the distance control circuit through a button switch 3 is fixedly connected to the partition 30, a sealing cover 24 is detachably connected to one end of the connecting tube 23 away from the supporting tube 22, a limiting plate 29 is slidably connected inside the supporting tube 22, a metal spring 32 is fixedly connected between the limiting plate 29 and the partition 30, a vertical rod 28 that penetrates into the sleeve 16 is fixedly connected to one side of the limiting plate 29 away from the partition 30, a plurality of pillars 33 are fixedly connected to one end of the vertical rod 28 away from the limiting plate 29, a sealing plate 34 is fixedly connected to the plurality of pillars 33, the sealing plate 34 is arranged to fit the end surface of the outlet portion 19, and the sealing plate 34 only covers the entrance of the first flow channel 20 or the second flow channel 21 at a time.

[0055] When the three-way solenoid valve 8 needs to be used, the insertion tube portion 18 can be connected to the pull-out hose, and tap water is introduced through the inlet channel 25 in the inlet portion 17. If the flow rate or flow of the tap water in the three-way solenoid valve 8 needs to be adjusted, the valve stem 26 is driven by the electric actuator 15, and the V-shaped ball 27 is driven by the valve stem 26 to rotate in the inlet channel 25. Due to the V-shaped opening on the V-shaped ball 27, when the tap water passes through the V-shaped ball 27, the flow rate / flow rate of the tap water can be controlled, and it rises regularly. Then, if it is necessary to switch the first flow channel 20 and the second flow channel 21, the adjustment electromagnet 31 is energized, and the adjustment The electromagnet 31 generates magnetic force and absorbs the metal spring 32, so that the metal spring 32 can pull the limit plate 29 to slide in the support tube 22. When the limit plate 29 moves upward in the support tube 22, the limit plate 29 will pull the vertical rod 28 to move, and the vertical rod 28 will drive a number of pillars 33, and then drive the sealing plate 34 to move, so that the sealing plate 34 switches from a state of closing the second flow channel 21 to a state of closing the first flow channel 20. Conversely, when the electromagnet 31 is powered off, it loses its own magnetic force, so that the metal spring 32 no longer collapses, and the metal spring 32 can expand and push the limit plate 29. Under a series of transmissions, the sealing plate 34 can re-close the second flow channel 21.

[0056] Preferably, the outer circle of the insertion portion 18 is provided with an external thread, the inlet portion 17 and the outlet portion 19 are both threadedly connected to the inner sides of the two ends of the sleeve 16, the support tube 22 and the connecting tube 23 are also threadedly connected, and the inner circle of the end of the connecting tube 23 away from the support tube 22 is provided with an internal thread, and the connecting tube 23 is threadedly connected to the cover 24 through the internal thread. The top and back surfaces of the sealing plate 34 are set to be planes, and the width of the sealing plate 34 is gradually increased from the side facing the inlet portion 17.

[0057] The connection relationship between each structure is a detachable connection, and the more specific connection relationship is to connect through a thread. The detachable connection through a threaded connection can not only make the structure processing and forming easier, but also make the structure have a certain degree of waterproofness when connected to each other. The structural setting of the sealing plate 34 has two planes for connecting the pillar 33 and fitting the end face of the outlet portion 19 to shield the first flow channel 20 or the second flow channel 21. The width of the sealing plate 34 is gradually increased from the side facing the inlet portion 17. This is to ensure that when there is tap water flowing in the sleeve 16, the tap water can impact the front of the sealing plate 34, and then be guided by the front of the sealing plate 34, so that the sealing plate 34 can finally fit more securely on the end face of the outlet portion 19 to avoid leakage in the closed first flow channel 20 or the second flow channel 21.

[0058] Preferably, if Figure 3 and Figure 4 As shown, the distance control circuit includes

[0059] A distance detection circuit 5 is arranged on the drawing head 2, and the distance detection circuit 5 detects the height of the drawing head 2 and outputs a distance judgment signal when the height is lower than a height threshold;

[0060] A self-cutting circuit 6, wherein a controlled end of the self-cutting circuit 6 is coupled to an output end of the distance detection circuit 5, and the self-cutting circuit 6 controls its output end to be energized after responding to the distance judgment signal;

[0061] The first relay 7, the switch of the first relay 7 connects the button switch 3, the adjusting electromagnet 31 to the power supply, the controlled end of the first relay 7 is coupled to the self-cutting circuit 6, and the switch of the first relay 7 is controlled by the self-cutting circuit 6 to energize the circuit where the adjusting electromagnet 31 is located.

[0062] Among them, the distance detection circuit 5 includes a distance sensor and a voltage comparator coupled to the output end of the distance sensor, and the self-cutoff circuit 6 includes a first transistor switch, the base of the first transistor switch is coupled to the output end of the voltage comparator, the collector of the first transistor switch is connected to electricity, and the emitter of the first transistor switch is connected to the first relay 7 and then grounded.

[0063] After the distance sensor detects the height of the pull-out head 2, it can generate a height signal and transmit it to the voltage comparator. The voltage comparator will detect the height signal at this time. If the feedback height is greater than the height threshold, the distance judgment signal will not be output. If the height of the pull-out head 2 is already less than the height threshold at this time, a distance judgment signal can be output through the voltage comparator. After this distance judgment signal is given to the base of the first transistor switch serving as the self-cut circuit 6, the collector and emitter of the first transistor switch are turned on and energized, so that the controlled end of the first relay 7 and the controlled end of the third relay can be energized. At this time, the controlled end of the first relay 7 controls the opening of the first relay 7 to close after being energized. Then people only need to press the button switch 3, so that the circuit where the adjustment electromagnet 31 is located can be energized, and then the bubble water mode can be switched to the shower mode.

[0064] Preferably, the straight slide button is a straight slide potentiometer 4, and the straight slide potentiometer 4 is connected to the power supply through the button switch 3, such as Figure 3 and Figure 4 As shown, the distance control circuit also includes

[0065] A voltage sensor 12, the voltage sensor 12 detects the voltage of the circuit where the direct sliding potentiometer 4 is located and outputs a voltage signal;

[0066] A signal conditioning circuit 13, wherein the input end of the signal conditioning circuit 13 is coupled to the output end of the voltage sensor 12, and the signal conditioning circuit 13 receives the voltage signal, performs secondary operational amplification, and outputs a voltage amplification signal;

[0067] The output end of the signal conditioning circuit 13 is coupled to the input end of the microcontroller 14 , and the output end of the microcontroller 14 is coupled to the input end of the electric actuator 15 . The microcontroller 14 controls the rotation angle of the driving shaft of the electric actuator 15 in response to the voltage amplification signal.

[0068] The signal conditioning circuit 13 includes a first operational amplifier and a second operational amplifier. The input terminal of the second operational amplifier is coupled to the output terminal of the first operational amplifier. The input terminal of the first operational amplifier is coupled to the output terminal of the voltage sensor 12 .

[0069] After the pull-out head 2 is switched from the bubble water mode to the shower mode, the straight-slide button can also be energized. Since it is essentially a straight-slide potentiometer 4, when people use it, they can adjust the resistance of the straight-slide potentiometer 4 by pushing the straight-slide button, which is the active end of the straight-slide potentiometer 4. In this way, its voltage will also change accordingly. At this time, the voltage sensor 12 can detect its voltage and output a voltage signal to the signal conditioning circuit 13. The voltage amplification signal obtained after secondary amplification by the signal conditioning circuit 13 can be controlled by the microcontroller 14 to control the electric actuator 15 according to its signal. Specifically, the electric actuator 15 is essentially a servo motor. The microcontroller 14 is coupled to it to control the rotation angle of its drive shaft according to the voltage amplification signal, thereby adjusting the rotation angle of the V-shaped sphere 27 in the inlet channel 25, thereby completing the flow rate / flow rate adjustment action of the tap water.

[0070] Preferably, if Figure 3 and Figure 4 As shown, the distance control circuit also includes

[0071] The recovery electromagnet 11 is arranged in the pull-out head 2, and the movable end of the straight-sliding potentiometer 4 is set to be made of metal. The recovery electromagnet 11 is energized to adsorb the movable end of the straight-sliding potentiometer 4;

[0072] Delay circuit 9, the input end of the delay circuit 9 is connected to the power supply, and the delay circuit 9 outputs a delay signal after charging is completed;

[0073] A second relay 10, a controlled end of the second relay 10 is coupled to the output end of the delay circuit 9, and a switch of the second relay 10 is connected between the power supply and the recovery electromagnet 11;

[0074] The third relay, the controlled end of the third relay is connected in series with the circuit where the controlled end of the first relay 7 is located, the switch of the third relay is connected between the power supply and the input end of the delay circuit 9, the switch of the third relay is a normally closed switch, when the controlled end of the third relay is energized, the switch of the third relay is disconnected.

[0075] Among them, the delay circuit 9 includes an RC delay circuit and a second triode switch, the base of the second triode switch is coupled to the output end of the RC delay circuit, the collector of the second triode switch is connected to the controlled end of the second relay 10 and then connected to the power supply, and the emitter of the second triode switch is grounded.

[0076] After the height of the pulling head 2 is lower than the height threshold, not only can the self-off circuit 6 be turned on to energize the controlled end of the first relay 7, but also the controlled end of the third relay can be energized. At this time, the controlled end of the third relay controls the switch of the third relay to be disconnected, and the delay circuit 9 remains in a state where it cannot be charged. When the height of the pulling head 2 is switched back to be greater than the height threshold, the controlled end of the third relay is powered off, which in turn closes the switch of the third relay, thereby enabling the delay circuit 9 to be charged. After the charging is completed, a delay signal is sent to the base of the second transistor switch, so that the collector and emitter of the second transistor switch are turned on, thereby energizing the controlled end of the second relay 10, closing the switch of the second relay 10, and thus enabling the recovery electromagnet 11 to be energized, so that the magnetic force generated by the recovery electromagnet 11 can suck the metal active end of the direct sliding potentiometer 4 back to its original position, so that the flow rate / flow of the water flow can be restored.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pull-out low-position flow regulating faucet, characterized in that: The invention comprises a faucet pipe (1), and a pull-out head (2) connected to the faucet pipe (1) via a pull-out hose, wherein the pull-out head (2) can be detachably connected to the faucet pipe (1), the pull-out head (2) has a switchable bubble water mode and a shower mode, and a distance control circuit is arranged on the pull-out head (2), wherein the distance control circuit controls the mode of the pull-out head (2) according to whether the height of the pull-out head (2) is lower than a height threshold, when the height of the pull-out head (2) is higher than the height threshold, the pull-out head (2) only maintains a bubble water state, when the height of the pull-out head (2) is lower than the height threshold, the pull-out head (2) can switch between the bubble water mode and the shower mode, the water flow rate of the pull-out head (2) in the shower mode can be adjusted, and when the height of the pull-out head (2) changes from lower than the height threshold to higher than the height threshold, the pull-out head (2) returns to the minimum water flow rate and switches back to the bubble water mode.

2. A pull-out low-position flow regulating faucet according to claim 1, characterized in that: The pull-out head (2) comprises a housing, a three-way solenoid valve (8) arranged in the housing, and a bubble water outlet and a shower water outlet connected to the three-way solenoid valve (8); a button switch (3) and a straight-slide button are arranged on the housing; the three-way solenoid valve (8) is coupled to a distance control circuit via the button switch (3) and the straight-slide button; the button switch (3) is used to switch between a bubble water mode and a shower mode; and the straight-slide button is used to adjust the water flow rate of the pull-out head (2) in the shower mode.

3. A pull-out low-position flow regulating faucet according to claim 2, characterized in that: The three-way solenoid valve (8) comprises a sleeve (16), an inlet portion (17) and an outlet portion (19) fixedly connected to both ends of the sleeve (16); an end of the inlet portion (17) away from the sleeve (16) is connected to a plug portion (18); an inlet channel (25) is arranged in the inlet portion (17); a first flow channel (20) and a second flow channel (21) are arranged in the outlet portion (19) which are respectively connected to a bubble outlet head and a shower outlet head; a rotating valve (25) is arranged in the inlet channel (25); A V-shaped ball (27) is provided for adjusting the water flow rate passing through the three-way solenoid valve (8); the outer ring of the sleeve (16) is fixedly connected to an electric actuator (15) coupled to a distance control circuit via a straight slide button; the drive shaft of the electric actuator (15) is fixedly connected to a valve stem (26) penetrating into the inlet channel (25); the outer ring of the sleeve (16) is fixedly connected to a support tube (22); the end of the support tube (22) away from the sleeve (16) is detachably connected to a connecting tube (26) 3), a partition (30) is fixedly connected inside the connecting tube (23), an adjustment electromagnet (31) is fixedly connected to the partition (30), and the adjustment electromagnet (31) is located inside the connecting tube (23) and is coupled to the distance control circuit through a button switch (3), a sealing cover (24) is detachably connected to one end of the connecting tube (23) away from the supporting tube (22), a limiting plate (29) is slidably connected inside the supporting tube (22), and a metal spring (29) is fixedly connected between the limiting plate (29) and the partition (30) 32), a side of the limit plate (29) away from the partition (30) is fixedly connected to a vertical rod (28) penetrating into the sleeve (16), an end of the vertical rod (28) away from the limit plate (29) is fixedly connected to a plurality of pillars (33), and a plurality of the pillars (33) are commonly fixedly connected to a sealing plate (34), the sealing plate (34) is arranged to fit the end surface of the outflow portion (19), and the sealing plate (34) only covers the entrance of the first flow channel (20) or the second flow channel (21) at a time.

4. The pull-out low-position flow regulating faucet according to claim 3, characterized in that: The outer ring of the inserting portion (18) is provided with an external thread, the inlet portion (17) and the outlet portion (19) are both threadedly connected to the inner sides of the two ends of the sleeve (16), the support tube (22) and the connecting tube (23) are also threadedly connected, the inner ring of the end of the connecting tube (23) away from the support tube (22) is provided with an internal thread, the connecting tube (23) is threadedly connected to the sealing cover (24) through the internal thread, the top surface and the back surface of the sealing plate (34) are set to be planes, and the width of the sealing plate (34) is gradually increased from the side facing the inlet portion (17).

5. The pull-out low-position flow regulating faucet according to claim 3, characterized in that: The distance control circuit includes A distance detection circuit (5) is arranged on the drawer head (2), wherein the distance detection circuit (5) detects the height of the drawer head (2) and outputs a distance judgment signal when the height is lower than a height threshold; A self-cutting circuit (6), wherein a controlled end of the self-cutting circuit (6) is coupled to an output end of the distance detection circuit (5), and the self-cutting circuit (6) controls its output end to be energized in response to a distance judgment signal; A first relay (7), wherein a switch of the first relay (7) connects the button switch (3), the adjusting electromagnet (31) to a power source, a controlled end of the first relay (7) is coupled to a self-off circuit (6), and the switch of the first relay (7) is controlled by the self-off circuit (6) to energize a circuit where the adjusting electromagnet (31) is located.

6. The pull-out low-position flow regulating faucet according to claim 5, characterized in that: The distance detection circuit (5) comprises a distance sensor and a voltage comparator coupled to an output end of the distance sensor. The self-shutoff circuit (6) comprises a first transistor switch, a base of the first transistor switch is coupled to the output end of the voltage comparator, a collector of the first transistor switch is connected to electricity, and an emitter of the first transistor switch is connected to a first relay (7) and then grounded.

7. The pull-out low-position flow regulating faucet according to claim 5, characterized in that: The straight-slide button is a straight-slide potentiometer (4), and the straight-slide potentiometer (4) is connected to a power supply via a button switch (3). The distance control circuit also includes A voltage sensor (12), wherein the voltage sensor (12) detects the voltage of the circuit in which the direct-sliding potentiometer (4) is located and outputs a voltage signal; A signal conditioning circuit (13), wherein an input end of the signal conditioning circuit (13) is coupled to an output end of the voltage sensor (12), and the signal conditioning circuit (13) receives a voltage signal, performs secondary operational amplification, and outputs a voltage amplification signal; A microcontroller (14), wherein the output end of the signal conditioning circuit (13) is coupled to the input end of the microcontroller (14), the output end of the microcontroller (14) is coupled to the input end of the electric actuator (15), and the microcontroller (14) controls the rotation angle of the drive shaft of the electric actuator (15) in response to the voltage amplification signal.

8. The pull-out low-position flow regulating faucet according to claim 7, characterized in that: The signal conditioning circuit (13) comprises a first operational amplifier and a second operational amplifier, wherein an input terminal of the second operational amplifier is coupled to an output terminal of the first operational amplifier, and an input terminal of the first operational amplifier is coupled to an output terminal of the voltage sensor (12).

9. The pull-out low-position flow regulating faucet according to claim 7, characterized in that: The distance control circuit also includes A recovery electromagnet (11), wherein the recovery electromagnet (11) is arranged in the pull-out head (2), the movable end of the direct-sliding potentiometer (4) is arranged to be made of metal material, and the recovery electromagnet (11) is energized to adsorb the movable end of the direct-sliding potentiometer (4); A delay circuit (9), wherein the input end of the delay circuit (9) is electrically connected, and the delay circuit (9) outputs a delay signal after charging is completed; A second relay (10), a controlled end of the second relay (10) is coupled to an output end of the delay circuit (9), and a switch of the second relay (10) is connected between a power source and a recovery electromagnet (11); A third relay, wherein the controlled end of the third relay is connected in series with the loop where the controlled end of the first relay (7) is located, and the switch of the third relay is connected between the power supply and the input end of the delay circuit (9).

10. The pull-out low-position flow regulating faucet according to claim 9, characterized in that: The delay circuit (9) comprises an RC delay circuit and a second triode switch, wherein the base of the second triode switch is coupled to the output end of the RC delay circuit, the collector of the second triode switch is connected to the controlled end of the second relay (10) and then electrically connected, and the emitter of the second triode switch is grounded.

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