Spray device and care comb

Abstract

This invention relates to the field of spraying, and particularly to a spraying device and a nursing comb, comprising a base, a motor, a diaphragm, and a compression assembly. The base is provided with a compression channel and a liquid inlet channel, and a valve body for controlling the opening or closing of the liquid inlet channel is provided within the liquid inlet channel. A spraying chamber is formed at the intersection of the outlet of the compression channel and the outlet of the liquid inlet channel, and the base is provided with a spraying channel communicating with the outlet of the spraying chamber. The thickness of the diaphragm is 0.3 mm to 1 mm, and the diaphragm includes a membrane sheet. The diaphragm is located at the outlet of the spraying chamber and above the spraying channel. This spraying device uses a motor-driven transmission device to drive the compression rod to reciprocate, realizing the automatic intake and spraying of liquid in the spraying chamber. It has a compact structure and stable operation. The membrane sheet is located at the outlet of the spraying chamber and can automatically swing under negative and positive pressure to realize the closing and opening of the spraying channel, effectively preventing liquid backflow and reflux.

Description

Technical Field

[0001] This invention relates to the field of spraying, and particularly to spraying devices and care combs. Background Technology

[0002] Spraying devices are widely used in household appliances, medical devices, industrial spraying, agricultural irrigation, and personal care, among other fields. Their main function is to atomize or spray liquids under pressure to achieve purposes such as cleaning, humidification, spraying, disinfection, or drug delivery. Existing spraying devices typically rely on manual compressed air pumps or electric pumps for operation. In current technology, common electric spraying devices often employ piston or diaphragm pump structures. These devices achieve spraying by compressing liquid within a chamber under motor drive, but they generally suffer from the following problems:

[0003] The existing spray chamber lacks an effective coordination mechanism during liquid inlet and outlet processes, which can easily lead to problems such as poor liquid inlet or unstable spraying, resulting in insufficient spraying continuity.

[0004] Some injection devices are prone to liquid backflow in the injection channel when the compression rod rises, affecting injection accuracy and stability. Summary of the Invention

[0005] The primary objective of this invention is to provide a spraying device that effectively prevents liquid backflow and ensures the continuity and stability of the spraying process.

[0006] The second objective of this invention is to provide a nursing comb with a spray function.

[0007] The first objective of this invention is achieved as follows:

[0008] A spraying device includes a base, a motor, a diaphragm, and a compression assembly. The base has a compression channel and a liquid inlet channel, and a valve for controlling the opening or closing of the liquid inlet channel is provided in the liquid inlet channel. A spraying chamber is formed at the intersection of the outlet of the compression channel and the outlet of the liquid inlet channel, and the base has a spraying channel communicating with the outlet of the spraying chamber. The diaphragm has a thickness of 0.3 mm to 1 mm, and the diaphragm includes a membrane sheet. The diaphragm is disposed at the outlet of the spraying chamber and above the spraying channel.

[0009] The compression assembly is disposed in the base body. The compression assembly includes a transmission device for converting rotary motion into linear motion and a compression rod. The motor is disposed in the base body. The output shaft of the motor is connected to the input end of the transmission device. The output end of the transmission device is connected to the compression rod. The compression rod passes through the inlet of the compression channel and is inserted into the compression channel. The motor drives the compression rod to move up and down along the compression channel through the transmission device.

[0010] The side wall of the base is provided with conductive contacts, and the motor is electrically connected to the conductive contacts;

[0011] When the compression rod rises, a negative pressure is created in the injection chamber. Under the action of the negative pressure, the diaphragm swings upward, sealing the outlet of the injection chamber. At the same time, the valve body opens the inlet channel, and external liquid enters the injection chamber along the inlet channel. When the compression rod descends, it squeezes the liquid in the injection chamber. The liquid pushes the diaphragm downward, opening the outlet of the injection chamber. The liquid is ejected along the injection channel, and at the same time, the valve body closes the inlet channel, preventing external liquid from entering the injection chamber.

[0012] This spraying device uses a motor-driven transmission mechanism to drive a compression rod in reciprocating motion, achieving automatic liquid intake and discharge within the spraying chamber. It features a compact structure and stable operation. A diaphragm, positioned at the outlet of the spraying chamber, automatically oscillates under negative and positive pressure, respectively closing and opening the spraying channel, effectively preventing backflow and ensuring the continuity and stability of the spraying process. The valve body and compression rod work together to automatically switch between the inlet and spraying channels, eliminating the need for manual control and improving ease of use and reliability. Furthermore, the diaphragm thickness is controlled within the range of 0.3mm to 1mm, ensuring both sensitive diaphragm response and sufficient strength and durability, resulting in better overall spraying performance and a longer lifespan for the entire device.

[0013] The primary objective of this invention can also be achieved using the following technical measures:

[0014] Furthermore, the membrane body also includes a membrane ring made of polyurethane material and an elastic connecting piece made of thermoplastic elastomer material. The membrane is made of silicone material, and the size of the membrane is smaller than the annular cavity of the membrane ring. The membrane is placed inside the annular cavity. One end of the elastic connecting piece is connected to the membrane, and the other end of the elastic connecting piece is connected to the membrane ring. The membrane can swing flexibly under the action of the elastic connecting piece.

[0015] The membrane body adopts a composite structure of membrane ring, elastic connecting piece and membrane sheet, wherein the membrane ring provides stable support, the elastic connecting piece provides flexible connection, and the silicone membrane sheet ensures sealing and flexibility, so that the membrane sheet can swing flexibly during the spraying process to achieve efficient opening and closing of the spraying channel.

[0016] The polyurethane membrane ring provides structural strength, the silicone diaphragm ensures sealing and flexibility, and the thermoplastic elastomer sheet provides elastic resilience, resulting in a longer overall lifespan.

[0017] The diaphragm size is smaller than the annular cavity, allowing the diaphragm to move freely under injection pressure, thus improving the accuracy of injection flow control.

[0018] Furthermore, the valve body includes a ball, a spring, and a liquid inlet, the inner wall of which is coated with an anti-corrosion coating, and the liquid inlet is inserted into the liquid inlet channel;

[0019] The ball bearing is movably positioned within the liquid inlet channel near the liquid inlet nozzle. The spring is placed within the liquid inlet channel, with one end of the spring abutting against the inner wall of the liquid inlet channel and the other end abutting against the ball bearing. The spring constitutes the ball bearing's reset mechanism, allowing the ball bearing to move to block or open the liquid inlet nozzle.

[0020] The valve body achieves automatic opening and closing of the liquid inlet channel through the cooperation of ball bearings and springs, which is simple in structure and reliable in operation. The ball bearings can move flexibly under the action of the spring, blocking or opening the liquid inlet in time, thereby ensuring unidirectional flow of liquid in the injection chamber during compression and avoiding backflow. The anti-corrosion coating on the inner wall of the liquid inlet effectively extends the service life of the valve body and can maintain stable performance even when using liquids containing chemical components for a long time. The overall design improves the accuracy of liquid inlet and the reliability of the injection device.

[0021] Furthermore, the transmission device includes an upper component and a lower component. The upper component includes a connecting part and an insertion part. The outer wall of the insertion part is provided with a corrugated groove. The surface of the corrugated groove is coated with an anti-slip coating made of polytetrafluoroethylene. The upper end of the connecting part is connected to a speed reduction device, and the lower end of the connecting part is connected to the insertion part.

[0022] The lower component includes a lower seat, which has a receiving cavity, and the inner wall of the receiving cavity is provided with a protrusion. The compression rod is located at the bottom of the lower seat.

[0023] The insertion part is inserted into the receiving cavity, and the protrusion is inserted into the wavy groove. The upper component rotates so that the protrusion slides along the wavy groove, thereby driving the lower component to rise and fall. The compression rod follows the lower component to rise and fall.

[0024] The transmission device, through the rotation of the upper component, causes the protrusion to slide along the corrugated groove, efficiently converting the rotational motion into the linear reciprocating motion of the compression rod, thus achieving stable liquid intake and discharge. The corrugated groove surface is coated with a polytetrafluoroethylene anti-slip coating, which reduces friction and improves transmission efficiency and service life. The combined structure of the upper and lower components is compact, facilitating assembly and maintenance, while ensuring that the compression rod rises and falls synchronously with the lower component, making the spraying action smooth and reliable. The overall design improves the motion accuracy and energy transmission efficiency of the spraying device, enhancing its spraying performance.

[0025] Furthermore, it also includes an inner seat, which is provided with the compression channel, the liquid inlet channel and the injection chamber. The inner seat is provided with a movable cavity, the inner wall surface of which is coated with a low-friction coating made of polytetrafluoroethylene. The bottom of the movable cavity has a central opening that connects to the inlet of the compression channel. The bottom wall of the movable cavity is provided with an annular elastic gasket with a thickness ranging from 0.5 mm to 3 mm around the central opening.

[0026] The annular elastic gasket is fixed to the bottom wall of the inner cavity of the movable cavity by adhesive bonding or press fitting. The outer edge of the annular elastic gasket is close to the inner wall of the movable cavity, and the inner edge of the annular elastic gasket is close to the central opening. The thickness of the annular elastic gasket gradually increases from the outer edge to the inner edge. The annular elastic gasket is provided with multiple radial venting grooves. One end of the radial venting groove faces the inner wall of the movable cavity, and the other end of the radial venting groove faces the central opening.

[0027] The lower seat has a limiting protrusion on its outer wall, and the cavity wall of the movable cavity has a limiting groove along its height direction. The lower seat is slidably placed in the movable cavity, and the limiting protrusion is inserted into the limiting groove. The limiting groove restricts the sliding direction of the limiting protrusion, thereby restricting the sliding direction of the lower seat.

[0028] The compression rod includes a rod body and a sealing ring. The outer surface of the rod body is coated with a hardened coating made of titanium nitride or aluminum oxide. The sealing ring is fitted onto the rod body and seals the gap between the compression channel and the rod body.

[0029] The inner seat centrally arranges the compression channel, liquid inlet channel, and injection chamber, resulting in a clear and compact liquid flow path and improving the overall efficiency of the device. The inner wall of the movable chamber is coated with a low-friction polytetrafluoroethylene coating, combined with annular elastic gaskets with gradually increasing thickness from the outside to the inside and radial venting grooves. This provides both buffering and guiding functions, effectively reducing the sliding resistance and frictional wear of the lower seat, and improving the smoothness and lifespan of the reciprocating motion of the compression rod. The cooperation between the limiting protrusion and the limiting groove ensures that the lower seat slides in a predetermined direction, preventing deviation or jamming and improving the stability of the device. The combination of a hardened coating on the rod surface and a sealing ring enhances wear resistance and sealing performance, ensuring a liquid seal between the compression channel and the injection chamber, further improving injection accuracy and reliability.

[0030] The thickness of the annular elastic gasket gradually increases from the outer edge to the inner edge, and it has radial ventilation grooves, which can provide buffering and airflow guidance functions, reducing the impact and noise during the reciprocating motion of the compression rod.

[0031] The lower seat uses a limiting protrusion and a limiting groove to slide only in a predetermined direction, preventing the movement from deviating and causing jamming; the surface of the compression rod is coated with titanium nitride or aluminum oxide and used in conjunction with a sealing ring, which can enhance wear resistance and corrosion resistance, ensure stable sealing of the compression channel, and extend the overall service life.

[0032] Furthermore, the annular elastic gasket includes a highly elastic silicone layer, a high-hardness support layer, and a wear-resistant polytetrafluoroethylene layer, with the high-hardness support layer sandwiched between the highly elastic silicone layer and the wear-resistant polytetrafluoroethylene layer.

[0033] The inner edge of the annular elastic pad is provided with a plurality of annular guide rings with gradually decreasing diameters along the radial direction of the central opening. An air film buffer zone is formed between the annular guide rings to reduce friction and wear of the reciprocating motion of the rod and to keep the rod centered and guided. The rod passes through the annular guide rings in sequence and is inserted into the compression channel.

[0034] The annular elastic gasket adopts a composite structure of a highly elastic silicone layer, a high-hardness support layer, and a wear-resistant polytetrafluoroethylene layer. The high-hardness support ring is sandwiched between the silicone layer and the wear-resistant layer, which has good elastic buffering, structural support and wear resistance. It can reduce the friction and wear of the reciprocating motion of the compression rod and improve the stability and service life of the spraying device.

[0035] The inner annular guide rings gradually decrease in diameter, and an air film buffer zone is formed between the rings. This effectively reduces friction and wear during the reciprocating motion of the compression rod, while keeping the rod centered and guiding it, thus improving the accuracy and stability of the compression motion.

[0036] The compression rod passes through the annular guide ring in sequence to ensure smooth movement within the compression channel, reducing tilting and deviation, and further optimizing the continuity and stability of liquid injection.

[0037] Furthermore, it also includes a speed reduction device, which includes a first gear and a second gear, the first gear and the second gear meshing, the first gear being connected to a motor, and the second gear being connected to a connecting part.

[0038] The speed reduction device reduces the rotational speed and increases the output torque by meshing the first and second gears, making the compression rod move more smoothly and powerfully. At the same time, it reduces the load on the motor and improves the reliability and durability of the overall device.

[0039] Furthermore, it also includes a liquid storage tank, which is provided with a liquid inlet and a liquid outlet connected to the liquid storage tank, and the liquid inlet is provided with a plug.

[0040] The base is provided with a liquid storage tank cavity, and the bottom of the liquid storage tank cavity has a positioning channel that connects to the liquid inlet channel. The liquid storage tank sits in the liquid storage tank cavity, and the liquid outlet head is inserted into the positioning channel.

[0041] By setting up a liquid storage tank and connecting it to the liquid inlet channel of the base, a stable and continuous liquid source can be provided for the spraying device, avoiding the inconvenience caused by frequent liquid replenishment. The liquid storage tank is equipped with a plug, which facilitates the user to add liquid and prevents liquid leakage, improving the safety and convenience of use. The cooperation between the liquid storage tank cavity and the positioning channel ensures the stability of the liquid storage tank installation and the reliable connection between the liquid outlet and the liquid inlet channel, which simplifies the assembly structure and improves the sealing and stability of the spraying process.

[0042] Furthermore, the inner wall of the injection channel is provided with a spiral guide groove along the axial direction, and the injection channel is provided with multiple layers of filter screens or plates with gradually changing apertures.

[0043] The aperture of the filter screen near the inlet of the spray channel is larger than the aperture near the outlet of the spray channel.

[0044] The plate has multiple deformation channels spaced apart. The inlet diameter of each deformation channel is larger than the outlet diameter of the deformation channel. The inner diameter of the deformation channel gradually decreases from the inlet to the outlet. The inner wall of the deformation channel is provided with longitudinal ribs. The inlet of each deformation channel is close to the inlet of the injection channel, and the outlet of each deformation channel is close to the outlet of the injection channel.

[0045] The bottom of the base is equipped with phototherapy lamp beads spaced apart around the spray channel, and the lamp beads are electrically connected to conductive contacts.

[0046] By setting spiral guide grooves along the axial direction on the inner wall of the spray channel, the liquid forms a rotating flow in the channel, thereby enhancing the contact effect between the liquid and the filter screen or plate and improving the atomization uniformity of the liquid.

[0047] Multi-layered filter screens or plates with gradually varying pore sizes can progressively block and disperse liquids, reducing droplet size and achieving a finer spray atomization effect.

[0048] The deformation channel on the plate adopts a structure with a large inlet, a small outlet, and a gradually decreasing inner diameter, and longitudinal ribs are set on the inner wall. This can not only accelerate the liquid flow, but also generate strong shearing and disturbance effects, thereby further breaking up the droplets and avoiding the irritation caused by the spray of large droplets.

[0049] This structural design ensures that the sprayed liquid particles are small and evenly distributed, facilitating rapid penetration and absorption of the liquid on the scalp or skin surface. At the same time, the light-therapy lamps at the bottom of the base can simultaneously provide light therapy to the scalp or skin during the liquid spraying process, achieving a synergistic effect of atomization and light therapy to enhance the overall treatment effect.

[0050] The second objective of this invention is achieved as follows:

[0051] A nursing comb includes a comb, a battery and a circuit board, a comb tooth holder and a drive device. The comb has an installation opening, and a power supply contact is provided on the inner wall of the installation opening. The battery and the circuit board are disposed inside the comb, and the power supply contact and the battery are electrically connected to the circuit board respectively.

[0052] The comb holder includes a mounting base and comb teeth. The comb has movable openings spaced apart around the mounting opening. The mounting base is movably mounted inside the movable openings. The comb teeth are spaced apart on the mounting base.

[0053] The drive device is installed inside the comb and electrically connected to the circuit board. The drive device is connected to the mounting base. When the drive device works, it causes the mounting base to swing, thereby causing the comb teeth to swing and producing a massage effect.

[0054] The base body matches the shape of the mounting port, and the base body is detachably mounted on the mounting port, so that the conductive contacts and power supply contacts are electrically connected. The battery powers the spraying device, and the circuit board controls the start, stop and operation of the spraying device.

[0055] This hair care comb incorporates a battery, circuit board, and drive mechanism within the comb itself. During use, the power source provides energy to the mounting base, causing the comb teeth to oscillate and massage the scalp. This provides scalp care and soothing while combing, enhancing comfort. The comb teeth are movably mounted, allowing for flexible movement and preventing excessive pulling on the hair, thus reducing scalp irritation and making it gentler. The comb also features a mounting port where the spray device's base can be detachably installed. A reliable connection via conductive contacts allows the spray device to be powered by the comb's battery, facilitating control and use. The overall design integrates combing, massage, and spray care functions, enhancing the comb's practicality and versatility.

[0056] The beneficial effects of this invention are as follows:

[0057] This invention utilizes a motor-driven transmission device to reciprocate a compression rod, enabling automatic liquid intake and ejection within the injection chamber. The device features a compact structure and stable operation. A diaphragm, positioned at the outlet of the injection chamber, automatically oscillates under negative and positive pressure, closing and opening the injection channel to prevent backflow and ensure continuity and stability. The valve body, in coordination with the compression rod, automatically switches between the inlet and injection channels, eliminating manual control and improving ease of use and reliability. Furthermore, the diaphragm thickness is controlled within the range of 0.3mm to 1mm, ensuring both sensitive diaphragm response and sufficient strength and durability, resulting in superior overall injection performance and a longer lifespan.

[0058] In this invention, the membrane body adopts a composite structure of membrane ring, elastic connecting piece and membrane sheet, wherein the membrane ring provides stable support, the elastic connecting piece provides flexible connection, and the silicone membrane sheet ensures sealing and flexibility, so that the membrane sheet can swing flexibly during the spraying process to achieve efficient opening and closing of the spraying channel.

[0059] In this invention, the annular elastic gasket adopts a composite structure of a highly elastic silicone layer, a high-hardness support layer, and a wear-resistant polytetrafluoroethylene layer. The high-hardness support ring is sandwiched between the silicone layer and the wear-resistant layer, which has good elastic buffering, structural support, and wear resistance. It can reduce the friction and wear of the reciprocating motion of the compression rod and improve the stability and service life of the injection device.

[0060] In this invention, the thickness of the annular elastic gasket gradually increases from the outer edge to the inner edge, and it has radial ventilation grooves, which can provide buffering and air guiding functions, reducing the impact and noise during the reciprocating motion of the compression rod.

[0061] In this invention, the spiral guide grooves on the inner wall of the spray channel can create a rotating flow when the liquid is sprayed out, enhancing the atomization effect and making the sprayed droplets finer and more uniform; the multi-layered filter screen with gradually changing pore size can achieve step-by-step filtration, which can not only effectively block impurities to prevent the spray channel from clogging, but also further control the droplet size, improving the stability and comfort of spraying; the phototherapy lamp beads arranged around the spray channel can exert a phototherapy effect while spraying the care liquid, achieving the dual effect of spray care and phototherapy care. Attached Figure Description

[0062] Figure 1 This is a schematic diagram of the spraying device in Example 1.

[0063] Figure 2 This is a schematic diagram of the spraying device of Example 1 from another angle.

[0064] Figure 3 This is a cross-sectional view of the spraying device of Example 1.

[0065] Figure 4 This is a cross-sectional view of the spraying device of Example 1 from another angle.

[0066] Figure 5 This is a cross-sectional view of the spraying device of Example 1 from another angle.

[0067] Figure 6 This is a schematic diagram of the spraying device of Example 1 (excluding part of the base).

[0068] Figure 7 This is an assembly diagram of the base and liquid storage tank in Example 1.

[0069] Figure 8 This is another assembly view of the base and liquid storage tank of Example 1.

[0070] Figure 9 This is an exploded view of the spraying device of Example 1.

[0071] Figure 10 This is a cross-sectional view of the inner seat of Example 1.

[0072] Figure 11 This is a cross-sectional view of the inner seat of Embodiment 1 from another angle.

[0073] Figure 12 This is a schematic diagram of the membrane in Example 1.

[0074] Figure 13 This is a schematic diagram of the annular elastic gasket of Example 1.

[0075] Figure 14 This is a cross-sectional view of the inner seat of Example 1 (with annular elastic pad).

[0076] Figure 15 for Figure 4 Enlarged view of part A.

[0077] Figure 16 This is a schematic diagram of the plate body in Example 2.

[0078] Figure 17 This is a schematic diagram of the injection channel in Example 3.

[0079] Figure 18 This is a schematic diagram of a grooming comb (without the spray device installed).

[0080] Figure 19 This is a schematic diagram of a grooming comb (with a spray device installed).

[0081] Figure 20 This is a schematic diagram of another angle of the care comb (with the spray device installed). Detailed Implementation

[0082] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0083] Implementation examples, in conjunction with Figures 1 to 15 As shown, a spraying device 15 includes a base 1, a motor 2, a diaphragm 3, and a compression assembly. The base 1 is provided with a compression channel 11 and a liquid inlet channel 12. A valve body 6 for controlling the opening or closing of the liquid inlet channel 12 is provided inside the liquid inlet channel 12. The outlet of the compression channel 11 and the outlet of the liquid inlet channel 12 meet to form a spraying chamber 13, and the base 1 is provided with a spraying channel 14 communicating with the outlet of the spraying chamber 13. The thickness of the diaphragm 3 is 0.3 mm to 1 mm. The diaphragm 3 includes a diaphragm sheet 31. The diaphragm 3 is disposed at the outlet of the spraying chamber 13 and above the spraying channel 14.

[0084] The compression assembly is disposed inside the base 1. The compression assembly includes a transmission device 4 for converting rotational motion into linear motion and a compression rod 5. The motor 2 is disposed inside the base 1. The output shaft of the motor 2 is connected to the input end of the transmission device 4. The output end of the transmission device 4 is connected to the compression rod 5. The compression rod 5 passes through the inlet of the compression channel 11 and is inserted into the compression channel 11. The motor 2 drives the compression rod 5 to move up and down along the compression channel 11 through the transmission device 4.

[0085] The side wall of the base 1 is provided with conductive contacts, and the motor 2 is electrically connected to the conductive contacts;

[0086] When the compression rod 5 rises, a negative pressure is formed in the injection chamber 13. Under the action of the negative pressure, the diaphragm 31 swings upward, sealing the outlet of the injection chamber 13. At the same time, the valve body 6 opens the liquid inlet channel 12, and external liquid enters the injection chamber 13 along the liquid inlet channel 12. When the compression rod 5 descends, the compression rod 5 squeezes the liquid in the injection chamber 13. The liquid pushes the diaphragm 31 to swing downward, opening the outlet of the injection chamber 13. The liquid is sprayed out along the injection channel 14. At the same time, the valve body 6 closes the liquid inlet channel 12, and external liquid no longer enters the injection chamber 13.

[0087] Furthermore, the membrane body 3 also includes a membrane ring 32 made of polyurethane material and an elastic connecting piece 33 made of thermoplastic elastomer material. The membrane 31 is made of silicone material. The size of the membrane 31 is smaller than the annular cavity 321 of the membrane ring 32. The membrane 31 is placed inside the annular cavity 321. One end of the elastic connecting piece 33 is connected to the membrane 31, and the other end of the elastic connecting piece 33 is connected to the membrane ring 32. The membrane 31 can swing flexibly under the action of the elastic connecting piece 33.

[0088] Furthermore, the valve body 6 includes a ball bearing 61, a spring 62, and a liquid inlet 63. The inner wall of the liquid inlet 63 is coated with an anti-corrosion coating, and the liquid inlet 63 is inserted into the liquid inlet channel 12.

[0089] The ball bearing 61 is movably disposed in the liquid inlet channel 12 near the liquid inlet nozzle 63. The spring 62 is placed in the liquid inlet channel 12, with one end of the spring 62 abutting against the inner wall of the liquid inlet channel 12 and the other end of the spring 62 abutting against the ball bearing 61. The spring 62 constitutes the reset mechanism of the ball bearing 61. The ball bearing 61 moves to block or open the liquid inlet nozzle 63.

[0090] Furthermore, the transmission device 4 includes an upper component 41 and a lower component 42. The upper component 41 includes a connecting part 411 and an insertion part 412. The outer wall of the insertion part 412 is provided with a corrugated groove 413. The surface of the corrugated groove 413 is coated with an anti-slip coating made of polytetrafluoroethylene. The upper end of the connecting part 411 is connected to a speed reduction device, and the lower end of the connecting part 411 is connected to the insertion part 412.

[0091] The lower component 42 includes a lower seat 421, the lower seat 421 having a receiving cavity 422, the inner wall of the receiving cavity 422 being provided with a protrusion 423, and the compression rod 5 being disposed at the bottom of the lower seat 421;

[0092] The insertion part 412 is inserted into the receiving cavity 422, and the protrusion 423 is inserted into the wavy groove 413. The upper part 41 rotates so that the protrusion 423 slides along the wavy groove 413, thereby driving the lower part 42 to rise and fall. The compression rod 5 follows the lower part 42 to rise and fall.

[0093] Furthermore, it also includes an inner seat 7, which is provided with the compression channel 11, the liquid inlet channel 12 and the injection chamber 13. The inner seat 7 is provided with a movable chamber 71, the inner wall surface of which is coated with a low-friction coating made of polytetrafluoroethylene. The bottom of the movable chamber 71 has a central opening 72 that connects to the inlet of the compression channel 11. The bottom wall of the movable chamber 71 is provided with an annular elastic gasket 8 with a thickness ranging from 0.5 mm to 3 mm around the central opening 72.

[0094] The annular elastic gasket 8 is fixed to the inner bottom wall of the movable cavity 71 by adhesive bonding. The outer edge of the annular elastic gasket 8 is close to the inner sidewall of the movable cavity 71, and the inner edge of the annular elastic gasket 8 is close to the central opening 72. The thickness of the annular elastic gasket 8 gradually increases from the outer edge to the inner edge. The annular elastic gasket 8 is provided with a plurality of radial ventilation grooves 81. One end of the radial ventilation groove 81 faces the inner sidewall of the movable cavity 71, and the other end of the radial ventilation groove 81 faces the central opening 72.

[0095] The lower seat 421 has a limiting protrusion 424 on its outer wall, and the cavity wall of the movable cavity 71 has a limiting groove 73 along its height direction. The lower seat 421 is slidably placed in the movable cavity 71, and the limiting protrusion 424 is inserted into the limiting groove 73. The limiting groove 73 restricts the sliding direction of the limiting protrusion 424, thereby restricting the sliding direction of the lower seat 421.

[0096] The compression rod 5 includes a rod body 51 and a sealing ring 52. The outer surface of the rod body 51 is coated with a hardened coating made of titanium nitride. The sealing ring 52 is fitted onto the rod body 51 and seals the gap between the compression channel 11 and the rod body 51.

[0097] Furthermore, the annular elastic gasket 8 includes a highly elastic silicone layer 82 (e.g., liquid silicone), a high-hardness support layer 83 (e.g., stainless steel spring steel sheet), and a wear-resistant polytetrafluoroethylene layer 84, wherein the high-hardness support layer 83 is sandwiched between the highly elastic silicone layer 82 and the wear-resistant polytetrafluoroethylene layer 84.

[0098] The inner edge of the annular elastic pad 8 is provided with a plurality of annular guide rings 85 with gradually decreasing diameters along the radial direction of the central opening 72. An air film buffer zone 86 is formed between the annular guide rings 85 to reduce the friction and wear of the reciprocating motion of the rod 51 and to keep the rod 51 centered and guided. The rod 51 passes through the annular guide rings 85 in sequence and is inserted into the compression channel 11.

[0099] Furthermore, it also includes a speed reduction device 9, which includes a first gear 91 and a second gear 92, the first gear 91 and the second gear 92 meshing, the first gear 91 being connected to the motor 2, and the second gear 92 being connected to the connecting part 411.

[0100] Furthermore, it also includes a liquid storage tank 10, which is provided with an inlet 101 communicating with the liquid storage tank 10 and an outlet 102 communicating with the liquid storage tank 10, and the inlet 101 is provided with a plug 103.

[0101] The base 1 is provided with a liquid storage tank cavity 16. The bottom of the liquid storage tank cavity 16 has a positioning channel 104 that connects to the liquid inlet channel 12. The liquid storage tank 10 sits in the liquid storage tank cavity 16, and the liquid outlet head 102 is inserted into the positioning channel 104.

[0102] Furthermore, the inner wall of the injection channel 14 is provided with a spiral guide groove 141 along the axial direction, and the injection channel 14 is provided with a multi-layer filter screen 142 with gradually changing aperture. The aperture of the filter screen 142 near the inlet of the injection channel 14 is larger than the aperture near the outlet of the injection channel 14.

[0103] The bottom of the base 1 is provided with light-therapy lamp beads at intervals around the spray channel 14, and the lamp beads are electrically connected to conductive contacts.

[0104] Furthermore, the lamp beads are six 650nm red lamps and six 850nm near-infrared lamps.

[0105] By combining 650nm red light and 850nm near-infrared light, the system can simultaneously provide both superficial and deep phototherapy during the spray treatment. Red light effectively promotes blood circulation and cell activity in the scalp's surface, while near-infrared light penetrates deeper into the tissue, improving the metabolic environment of the hair follicles. The combined use of these two technologies achieves synergistic superficial and deep care, enhancing the penetration and absorption of the nutrient solution or treatment solution, thereby improving scalp health and treatment results.

[0106] Furthermore, the inner bottom wall of the movable cavity 71 is coated with a high-adhesion primer, and the annular elastic gasket 8 and the inner bottom wall of the movable cavity 71 are bonded together with a high-strength, temperature-resistant, and chemically resistant two-component epoxy resin adhesive.

[0107] By applying a high-adhesion primer to the bottom wall of the active cavity and using a two-component epoxy resin adhesive to fix the annular elastic gasket, the bonding strength between the gasket and the cavity can be significantly improved, preventing loosening or detachment under long-term reciprocating motion and liquid conditions. The epoxy resin adhesive possesses high strength, temperature resistance, and chemical corrosion resistance, maintaining stable adhesion in environments containing different cleaning solutions or during long-term use, thereby ensuring the durability of the compression components and extending the overall service life of the device.

[0108] Example 2, combined with Figure 16 As shown, the difference between Example 2 and Example 1 is that:

[0109] The spray channel 14 is provided with a plate 20, which replaces the filter screen 142. Multiple deformation channels 30 are spaced apart on the plate 20. The inlet of each deformation channel 30 is close to the inlet of the spray channel 14, and the outlet of each deformation channel 30 is close to the outlet of the spray channel 14.

[0110] The inlet diameter of the deformation channel 30 is larger than the outlet diameter of the deformation channel 30. The inner diameter of the deformation channel 30 gradually decreases from the inlet to the outlet. The inner wall of the deformation channel 30 is provided with longitudinal ribs 40 to enhance the shear force and turbulence of the liquid in the channel and improve the droplet atomization effect.

[0111] By setting a spiral guide groove 141 in the injection channel 14 and multiple gradually narrowing deformation channels 30 on the plate 20, the liquid rotates and flows along the spiral guide groove 141 during the injection process. At the same time, the liquid accelerates in the channels with gradually decreasing inner diameter of the deformation channels 30. The longitudinal ribs 40 further enhance the shear force and turbulence of the liquid, thereby achieving efficient atomization and uniform distribution of droplets.

[0112] This structure can significantly improve spray uniformity and spray accuracy, reduce droplet aggregation or spray deviation, and improve spray stability.

[0113] Meanwhile, the tapered design of the deformation channel 30, combined with the longitudinal ribs 40, controls the liquid flow and ensures uniform energy distribution, enhances the atomization efficiency of the injection channel 14, effectively prevents the injection channel 14 from becoming clogged, and extends the service life of the injection device 15.

[0114] Example 3, combined with Figure 17 As shown, the difference between Example 3 and Example 1 is that:

[0115] In Example 3, an ultrasonic vibrating plate is provided near the outlet of the spray channel 14. The ultrasonic vibrating plate is electrically connected to a conductive contact. When working, the ultrasonic vibrating plate generates ultrasonic vibration to atomize the liquid in the spray channel 14.

[0116] In Example 3, an ultrasonic vibrating plate is installed near the outlet of the spray channel 14 and connected to the circuit board for power supply through conductive contacts. This allows the liquid to be subjected to ultrasonic vibration when passing through the ultrasonic vibrating plate during the spraying process, thereby being further dispersed into smaller droplets.

[0117] Compared to methods that rely solely on compression spray and filter 142 atomization, this structure achieves secondary atomization, resulting in smaller, more evenly distributed droplets and a finer, gentler mist. This avoids discomfort caused by large droplets directly impacting the scalp or skin. Simultaneously, the finer droplets are more easily and quickly absorbed by the scalp or skin, improving the penetration efficiency of the treatment solution or nutrient solution and enhancing its effectiveness.

[0118] Combination Figures 18 to 20 As shown, a nursing comb includes a comb 50, a battery and a circuit board, a comb tooth holder and a drive device. The comb 50 has an installation port 501, and a power supply contact 502 is provided on the inner wall of the installation port 501. The battery and the circuit board are disposed inside the comb 50, and the power supply contact 502 and the battery are electrically connected to the circuit board respectively.

[0119] The comb holder includes a mounting base and comb teeth 60. The comb has movable openings spaced apart around the mounting opening 501. The mounting base is movably mounted inside the movable openings. The comb teeth 60 are spaced apart on the mounting base.

[0120] The drive device is installed inside the comb and electrically connected to the circuit board. The drive device is connected to the mounting base. When the drive device works, it causes the mounting base to swing, thereby causing the comb teeth to swing and producing a massage effect.

[0121] The base 1 of Embodiment 1 and the base 1 of Embodiment 2 are shaped to match the mounting port 501. The base 1 is detachably mounted on the mounting port 501, so that the conductive contact and the power supply contact 502 are electrically connected. The battery powers the spraying device 15, and the circuit board controls the start, stop and operation of the spraying device 15.

[0122] In the embodiment 3, the base 1 is shaped to match the mounting port 501. The base 1 is detachably mounted on the mounting port 501, so that the conductive contact and the power supply contact 502 are electrically connected. The battery powers the spraying device 15 and the ultrasonic vibrating plate 70. The circuit board controls the start, stop and operation of the spraying device 15 and the ultrasonic vibrating plate 70.

[0123] Installation method of liquid storage tank 10: Place the liquid storage tank 10 in the liquid storage tank receiving cavity 16 provided in the base body 1, so that the liquid outlet 102 at the bottom of the liquid storage tank 10 is inserted into the corresponding positioning channel 104, and at the same time ensure that the plug 103 of the liquid inlet 101 is properly closed, so as to ensure that the liquid storage tank 10 is stably positioned and the liquid outlet 102 is reliably connected to the liquid inlet channel 12; through this installation method, the liquid storage tank 10 can be stably fixed, easy to disassemble and replace, and at the same time ensure that the liquid can flow smoothly into the spray chamber 13.

[0124] Installation method of spray device 15 and care comb: Align the base 1 of spray device 15 with the installation port 501 of care comb, and after the base 1 and the installation port 501 match in shape, it can be detached and installed on the installation port 501. Ensure that the conductive contacts of spray device 15 are reliably in contact with the power supply contacts 502 inside the comb. Then, power is supplied to spray device 15 through the battery and circuit board inside the comb. The circuit board controls the start, stop and action of spray device 15, realizing the integrated operation of spray function and comb tooth 60 swing massage function.

[0125] Working principle of the injection device 15: When the motor 2 starts, it drives the upper part 41 of the transmission device 4 to rotate through the reduction device. The rotation of the upper part 41 causes the protrusion 423 of the lower part 42 to slide along the wave-shaped groove 413, thereby driving the lower part 42 to rise and fall in the vertical direction, so that the compression rod 5 performs precise reciprocating linear motion in the compression channel 11.

[0126] As the compression rod 5 rises, the lower component 42 moves upward accordingly, creating a negative pressure in the injection chamber 13. This negative pressure causes the diaphragm 31 of the membrane body 3 to swing upward and tightly adhere to the outlet of the injection chamber 13, thus sealing the injection chamber 13. Simultaneously, the ball bearing 61 in the liquid inlet channel 12 overcomes the elastic force of the spring 62 under the negative pressure, opening the liquid inlet channel 12 and allowing external liquid to flow smoothly into the injection chamber 13, completing the liquid intake.

[0127] During the descent of the compression rod 5, the lower component 42 moves downward, and the compression rod 5 squeezes the liquid in the injection chamber 13. The liquid pressure pushes the diaphragm 31 to swing downward, opening the outlet of the injection chamber 13. At the same time, the ball valve 61 closes the liquid inlet channel 12 under the reset action of the spring 62, preventing liquid backflow. The liquid is ejected at high speed along the injection channel 14, realizing continuous and stable unidirectional injection.

[0128] This design, through the coordinated movement of the diaphragm 31 and the ball bearing 61, ensures the unidirectional flow of liquid and the stability of the jet, while improving the jet efficiency and the service life of the device.

[0129] The function of the annular elastic gasket 8 in the transmission device 4 is as follows: the annular elastic gasket 8 in the transmission device 4 can achieve buffering and shock absorption, reduce friction and wear during the reciprocating motion of the compression rod 5 through its multi-layer composite design, while maintaining the stable axial guidance of the compression rod 5 to avoid deviation and jamming; the radial ventilation groove 81 opened on it provides a flow channel for gas during compression and rebound, realizes pressure balance and gas film buffering, further reduces frictional resistance, thereby improving the overall service life and operational reliability of the transmission device 4 and the injection device 15.

[0130] The terms "first," "second," etc., used in this invention do not indicate any order, quantity, or importance, but are merely for distinction. The terms "a," "an," etc., used in this invention do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects.

[0131] In this invention, terms indicating direction or location, such as top, bottom, side, longitudinal, transverse, middle, center, outer, inner, horizontal, vertical, left, right, above, and below, are used to reflect relative positions, not absolute positions. The embodiments described above merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these all fall within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the appended claims.

Claims

1. A spraying device, comprising a base, a motor, a diaphragm, and a compression assembly, characterized in that: The base is provided with a compression channel and a liquid inlet channel. A valve body for controlling the opening or closing of the liquid inlet channel is provided in the liquid inlet channel. The outlet of the compression channel and the outlet of the liquid inlet channel meet to form a spray chamber, and the base is provided with a spray channel that connects to the outlet of the spray chamber. The thickness of the membrane is 0.3 mm to 1 mm. The membrane includes a diaphragm and is disposed at the outlet of the spray chamber and above the spray channel. The compression assembly is disposed in the base body. The compression assembly includes a transmission device for converting rotary motion into linear motion and a compression rod. The motor is disposed in the base body. The output shaft of the motor is connected to the input end of the transmission device. The output end of the transmission device is connected to the compression rod. The compression rod passes through the inlet of the compression channel and is inserted into the compression channel. The motor drives the compression rod to move up and down along the compression channel through the transmission device. The side wall of the base is provided with conductive contacts, and the motor is electrically connected to the conductive contacts; When the compression rod rises, a negative pressure is formed in the injection chamber. The diaphragm swings upward under the action of the negative pressure, sealing the outlet of the injection chamber. At the same time, the valve body opens the liquid inlet channel, and external liquid enters the injection chamber along the liquid inlet channel. When the compression rod descends, it squeezes the liquid in the injection chamber. The liquid pushes the diaphragm to swing downward, opening the outlet of the injection chamber. The liquid is then ejected along the injection channel. At the same time, the valve body closes the inlet channel, preventing external liquid from entering the injection chamber. The membrane body also includes a membrane ring made of polyurethane material and an elastic connecting piece made of thermoplastic elastomer material. The membrane is made of silicone material. The size of the membrane is smaller than the annular cavity of the membrane ring. The membrane is placed inside the annular cavity. One end of the elastic connecting piece is connected to the membrane, and the other end of the elastic connecting piece is connected to the membrane ring. The membrane can swing flexibly under the action of the elastic connecting piece. The transmission device includes an upper part and a lower part. The upper part includes a connecting part and an insertion part. The outer wall of the insertion part is provided with a corrugated groove. The surface of the corrugated groove is coated with an anti-slip coating made of polytetrafluoroethylene. The upper end of the connecting part is connected to a speed reduction device, and the lower end of the connecting part is connected to the insertion part. The lower component includes a lower seat, which has a receiving cavity, and the inner wall of the receiving cavity is provided with a protrusion. The compression rod is located at the bottom of the lower seat. The insertion part is inserted into the receiving cavity, and the protrusion is inserted into the wavy groove. The upper component rotates so that the protrusion slides along the wavy groove, thereby driving the lower component to rise and fall. The compression rod follows the lower component to rise and fall. It also includes an inner seat, which is provided with the compression channel, the liquid inlet channel and the injection chamber. The inner seat is provided with a movable cavity. The inner wall surface of the movable cavity is coated with a low-friction coating made of polytetrafluoroethylene. The bottom of the movable cavity has a central opening that connects to the inlet of the compression channel. The bottom wall of the movable cavity is provided with an annular elastic gasket with a thickness ranging from 0.5 mm to 3 mm around the central opening. The annular elastic gasket is fixed to the bottom wall of the inner cavity of the movable cavity by adhesive bonding or press fitting. The outer edge of the annular elastic gasket is close to the inner wall of the movable cavity, and the inner edge of the annular elastic gasket is close to the central opening. The thickness of the annular elastic gasket gradually increases from the outer edge to the inner edge. The annular elastic gasket is provided with multiple radial venting grooves. One end of the radial venting groove faces the inner wall of the movable cavity, and the other end of the radial venting groove faces the central opening. The lower seat has a limiting protrusion on its outer wall, and the cavity wall of the movable cavity has a limiting groove along its height direction. The lower seat is slidably placed in the movable cavity, and the limiting protrusion is inserted into the limiting groove. The limiting groove restricts the sliding direction of the limiting protrusion, thereby restricting the sliding direction of the lower seat. The compression rod includes a rod body and a sealing ring. The outer surface of the rod body is coated with a hardened coating made of titanium nitride or aluminum oxide. The sealing ring is fitted onto the rod body and seals the gap between the compression channel and the rod body.

2. The spraying device according to claim 1, characterized in that: The valve body includes a ball, a spring, and a liquid inlet. The inner wall of the liquid inlet is coated with an anti-corrosion coating, and the liquid inlet is inserted into the liquid inlet channel. The ball bearing is movably positioned within the liquid inlet channel near the liquid inlet nozzle. The spring is placed within the liquid inlet channel, with one end of the spring abutting against the inner wall of the liquid inlet channel and the other end abutting against the ball bearing. The spring constitutes the ball bearing's reset mechanism, allowing the ball bearing to move to block or open the liquid inlet nozzle.

3. The spraying device according to claim 1, characterized in that: The annular elastic gasket includes a highly elastic silicone layer, a high-hardness support layer, and a wear-resistant polytetrafluoroethylene layer, with the high-hardness support layer sandwiched between the highly elastic silicone layer and the wear-resistant polytetrafluoroethylene layer. The inner edge of the annular elastic pad is provided with a plurality of annular guide rings with gradually decreasing diameters along the radial direction of the central opening. An air film buffer zone is formed between the annular guide rings to reduce friction and wear of the reciprocating motion of the rod and to keep the rod centered and guided. The rod passes through the annular guide rings in sequence and is inserted into the compression channel.

4. The spraying device according to claim 1, characterized in that: It also includes a speed reduction device, which includes a first gear and a second gear, the first gear and the second gear meshing, the first gear being connected to a motor, and the second gear being connected to a connecting part.

5. The spraying device according to claim 1, characterized in that: It also includes a liquid storage tank, which is provided with an inlet and an outlet connected to the liquid storage tank, and the inlet is provided with a plug. The base is provided with a liquid storage tank cavity, and the bottom of the liquid storage tank cavity has a positioning channel that connects to the liquid inlet channel. The liquid storage tank sits in the liquid storage tank cavity, and the liquid outlet head is inserted into the positioning channel.

6. The spraying device according to claim 1, characterized in that: The inner wall of the injection channel is provided with a spiral guide groove along the axial direction, and the injection channel is provided with multiple layers of filter screens or plates with gradually changing pore sizes. The aperture of the filter screen near the inlet of the spray channel is larger than the aperture near the outlet of the spray channel. The plate has multiple deformation channels spaced apart. The inlet diameter of each deformation channel is larger than the outlet diameter of the deformation channel. The inner diameter of the deformation channel gradually decreases from the inlet to the outlet. The inner wall of the deformation channel is provided with longitudinal ribs. The inlet of each deformation channel is close to the inlet of the injection channel, and the outlet of each deformation channel is close to the outlet of the injection channel. The bottom of the base is equipped with phototherapy lamp beads spaced apart around the spray channel, and the lamp beads are electrically connected to conductive contacts.

7. A grooming comb comprising the spraying device as described in any one of claims 2-6, characterized in that: The device includes a comb, a battery and a circuit board, a comb tooth holder and a drive device. The comb has an installation opening, and the inner wall of the installation opening is provided with power supply contacts. The battery and the circuit board are disposed inside the comb, and the power supply contacts and the battery are electrically connected to the circuit board respectively. The comb holder includes a mounting base and comb teeth. The comb has movable openings spaced apart around the mounting opening. The mounting base is movably mounted inside the movable openings. The comb teeth are spaced apart on the mounting base. The drive device is installed inside the comb and electrically connected to the circuit board. The drive device is connected to the mounting base. When the drive device works, it causes the mounting base to swing, thereby causing the comb teeth to swing and producing a massage effect. The base body matches the shape of the mounting port, and the base body is detachably mounted on the mounting port, so that the conductive contacts and power supply contacts are electrically connected. The battery powers the spraying device, and the circuit board controls the start, stop and operation of the spraying device.

Images