Spraying device and care comb

Abstract

The utility model relates to a kind of injection device and nursing comb, including motor, speed reducer, seat, first check valve, compression assembly and second check valve, the seat is provided with compression channel and liquid inlet channel, the outlet of compression channel and the outlet of liquid inlet channel junction form injection cavity, the first check valve is set at the outlet of injection cavity, the seat is opened and is connected with the outlet of injection cavity injection port;The second check valve is set in liquid inlet channel, and second check valve controls whether liquid inlet channel is liquid inlet;The compression assembly includes the regulator for the dynamic adjustment of the volume of compression channel, the regulator is set in compression channel, the structure makes liquid can be evenly inhaled and high-speed ejects, significantly improves injection effect, solves the defect that hair care liquid, water can only rely on gravity or simple liquid distribution in prior art, realizes fine atomization and uniform distribution, improves nursing effect.

Description

Technical Field

[0001] This utility model relates to a spraying device and a care comb. Background Technology

[0002] As people's demand for hair health and care increases, various hair treatments, nourishing solutions, and functional liquids have appeared on the market. To ensure that the treatment solution adheres better to the hair surface and penetrates the hair cuticle, it is usually necessary to atomize the liquid and distribute it evenly on the hair strands through spraying. However, most existing treatment solution containers use gravity dispensing or squeeze dispensing methods, meaning the liquid simply flows out of the outlet by tilting the bottle or simply squeezing it, rather than being actively sprayed.

[0003] This structure has the following shortcomings: Existing devices can only allow the treatment solution to drip onto the hair surface, concentrating the liquid in localized areas and making it difficult to distribute it evenly over large areas of hair, thus affecting the treatment effect.

[0004] Without sufficient spray pressure, the liquid cannot form fine droplets and cannot effectively penetrate into the gaps between the hair cuticles, resulting in insufficient absorption of nutrients and low care efficiency. Utility Model Content

[0005] The primary objective of this invention is to provide an active spraying device that atomizes the liquid and ensures uniform liquid distribution.

[0006] The second objective of this invention is to provide a nursing comb that actively sprays liquid, has an atomizing effect, and ensures uniform liquid distribution.

[0007] The primary objective of this invention is achieved as follows: An injection device includes a motor, a reduction gear, a base, a first check valve, a compression assembly, and a second check valve. The seat is provided with a compression channel and a liquid inlet channel. The junction of the outlet of the compression channel and the outlet of the liquid inlet channel forms a spray chamber. The first one-way valve is provided at the outlet of the spray chamber. The seat has a spray port that communicates with the outlet of the spray chamber. The second check valve is installed in the liquid inlet channel, and the second check valve controls whether liquid enters the liquid inlet channel; The compression assembly includes a regulator for dynamically adjusting the volume of the compression channel. The regulator is disposed inside the compression channel. The input end of the reduction device is connected to the output shaft of the motor, and the output end of the reduction device is connected to the regulator. The motor drives the regulator to change the volume of the compression channel through the reduction device. When the volume of the compression channel increases, a negative pressure is formed in the injection chamber. The first one-way valve closes the outlet of the injection chamber, while the second one-way valve opens the liquid inlet channel, and external liquid enters the injection chamber along the liquid inlet channel. When the volume of the compression channel decreases, the first check valve opens the outlet of the injection chamber, and the liquid in the injection chamber is ejected outward along the injection port. At the same time, the second check valve closes the inlet channel.

[0008] This structure allows the liquid to be drawn in evenly and sprayed out at high speed, significantly improving the spraying effect. It solves the problem that existing technologies can only rely on gravity or simple liquid separation to dispense hair care liquid and water, achieving fine atomization and uniform distribution, thus enhancing the care effect.

[0009] The primary objective of this utility model can also be achieved by the following technical measures: It also includes a motor, which is disposed in the housing. The compression assembly further includes a transmission device for converting rotary motion into linear motion. The adjuster is a compression rod, which is slidably disposed in the compression channel. The compression rod is connected to the transmission device, and the output shaft of the motor is connected to the transmission device. The motor drives the compression rod to rise and fall along the compression channel through the transmission device. When the compression rod rises, the injection chamber forms a negative pressure. The first one-way valve closes the outlet of the injection chamber, and at the same time the second one-way valve 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 first check valve opens the outlet of the injection chamber, and the liquid in the injection chamber is ejected outward along the injection port. At the same time, the second check valve closes the inlet channel.

[0010] The compression assembly is driven by a motor to achieve the lifting and lowering movement of the compression rod. This structure allows the liquid to be evenly drawn in and sprayed out at high speed, significantly improving the spraying effect. It solves the problem that hair care liquid and water can only be discharged by gravity or simple separation in the existing technology, achieving fine atomization and uniform distribution, and improving the care effect.

[0011] Furthermore, the first one-way valve is a diaphragm. When the compression rod rises, a negative pressure is formed in the injection chamber. Under the action of the negative pressure, the diaphragm closes the outlet of the injection chamber. When the compression rod falls, the compression rod squeezes the liquid in the injection chamber, and the liquid in the injection chamber pushes the diaphragm to open the outlet of the injection chamber.

[0012] The compression assembly is driven by a motor to move the compression rod up and down, thereby creating an alternating process of negative pressure liquid inlet and positive pressure injection in the injection chamber.

[0013] Furthermore, the side wall of the seat is provided with conductive contacts, and the motor is electrically connected to the conductive contacts.

[0014] By setting conductive contacts on the side wall of the seat and connecting them to the motor, the spraying device can be easily connected to an external power source or circuit for detachable power supply. This avoids the problems of complex power connection and inconvenient maintenance in traditional devices, and improves the portability and replaceability of the device.

[0015] Furthermore, the second check valve includes a ball, a spring, and an inlet nozzle, the inlet nozzle being inserted into the inlet channel; The ball bearing is positioned in the liquid inlet channel near the liquid inlet nozzle. The spring is placed inside 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, and the ball bearing moves to block or open the liquid inlet nozzle.

[0016] The automatic opening and closing of the liquid inlet channel is achieved by utilizing the spring's reset action, which not only ensures smooth liquid inlet but also prevents liquid backflow and leakage, enhancing the stability and reliability of the spray and extending the service life of the device.

[0017] 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 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 and a compression rod. The lower seat has a receiving cavity with protrusions on the inner wall of the receiving cavity. 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.

[0018] By combining the wavy grooves and protrusions, the rotational motion is converted into a stable linear lifting motion, achieving precise drive of the compression rod. This design improves transmission efficiency, makes the compression process smooth and reliable, avoids jamming and impact problems, and ensures continuous and stable injection pressure.

[0019] Furthermore, it also includes an inner seat, which is provided with a movable cavity, and the inner seat is provided with a compression channel, a liquid inlet channel and a jetting cavity, the inlet of the compression channel being connected to the movable cavity; 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 sealing ring is fitted onto the rod body and seals the gap between the compression channel and the rod body.

[0020] A sealing ring is installed on the compression rod to effectively seal the gap between the compression channel and the rod body, preventing liquid leakage and gas leakage, ensuring compression efficiency and injection intensity, while improving the durability and safety of the device.

[0021] 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.

[0022] The high-speed rotation of the motor is converted into a low-speed, high-torque output through gear transmission, which is more suitable for driving the compression rod to lift and lower.

[0023] Furthermore, 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.

[0024] By incorporating a reservoir cavity on the base and using a capped reservoir, users can easily add or replace the care solution. The plug-in structure between the dispensing head and the positioning channel ensures a secure assembly and a sealed inlet, preventing leakage and improving ease of use and maintainability.

[0025] Furthermore, the bottom of the base is provided with light-therapy lamp beads spaced apart around the nozzle.

[0026] The second objective of this utility model is achieved as follows: A nursing comb includes a comb, a battery, 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. 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.

[0027] It also includes a comb holder and a drive device, wherein the comb holder includes a mounting base and comb teeth, and the comb teeth are spaced apart on the mounting base; The comb has movable openings spaced apart around the mounting opening, the mounting base is movably mounted inside the movable openings, and the comb teeth extend outwards; 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 is working, it drives the mounting base to swing, thereby driving the comb teeth to swing and producing a massage effect.

[0028] By combining a spray device with a comb and controlling it via battery power and a circuit board, the spray device can apply hair care solution while combing hair, creating an all-in-one hair care tool. This design significantly improves the efficiency and user experience of hair care, making it more practical.

[0029] By incorporating a drive mechanism within the comb, the comb teeth oscillate, causing them to either converge toward the center of the comb or expand outwards, mimicking the effect of finger grasping and creating a massage effect. This achieves the dual benefits of combing and massaging.

[0030] While spraying and conditioning, the massage function promotes scalp blood circulation, enhances nutrient absorption, and further improves the treatment effect and comfort.

[0031] The beneficial effects of this utility model are as follows: This invention uses a motor-driven compression assembly to create reciprocating negative and positive pressure. Combined with the automatic opening and closing of the diaphragm and the second one-way valve, it achieves automatic intake and stable spraying of the nursing solution. The liquid can be atomized into a fine spray with uniform distribution, overcoming the defect of existing nursing solutions that can only flow out by gravity, and greatly improving the nursing effect.

[0032] This invention employs a speed reduction device and a wave groove transmission structure to efficiently convert the rotational motion of the motor into the linear motion of the compression rod, making the driving process smooth and efficient, with high energy utilization, while reducing the motor load and extending its service life.

[0033] This utility model features a spray device equipped with a detachable liquid storage tank and a sealed liquid outlet, making it convenient for users to add and replace liquid; the base is equipped with conductive contacts, which can be quickly connected to the power supply contacts of the comb, achieving detachable installation and making it very convenient to use and maintain.

[0034] This invention combines a spray device with a comb, which, in addition to spraying care solution, can also control the comb teeth to swing via a circuit board to produce a massage effect, forming a multi-functional integrated care tool that combines combing, spray care, and scalp massage, significantly enhancing the user's care experience. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the spraying device.

[0036] Figure 2 This is a schematic diagram of the spray device from another angle.

[0037] Figure 3 This is a cross-sectional view of the injection device.

[0038] Figure 4 This is a cross-sectional view of the injection device from another angle.

[0039] Figure 5 This is a cross-sectional view of the injection device from another angle.

[0040] Figure 6 This is a schematic diagram of the spraying device (excluding part of the base).

[0041] Figure 7 This is an assembly drawing of the base and the liquid storage tank.

[0042] Figure 8 This is an assembly diagram of the base and the liquid storage tank from another angle.

[0043] Figure 9 This is an exploded view of the injection device.

[0044] Figure 10 This is a sectional view of the inner seat.

[0045] Figure 11 This is a schematic diagram of a grooming comb (without the spray device installed).

[0046] Figure 12 This is a schematic diagram of a grooming comb (with a spray device installed).

[0047] Figure 13 This is a schematic diagram of another angle of the care comb (with the spray device installed). Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments: Implementation examples, in conjunction with Figures 1 to 10 As shown, a spraying device 30 includes a reduction gear 9, a base 1, a motor 2, a first one-way valve, a compression assembly 4, and a second one-way valve 5. The first one-way valve is a diaphragm 3. The base 1 is provided with a compression channel 11 and a liquid inlet channel 12. The outlet of the compression channel 11 and the outlet of the liquid inlet channel 12 form a spraying chamber 13. The diaphragm 3 is disposed at the outlet of the spraying chamber 13. The base 1 has a spray port 14 that communicates with the outlet of the spraying chamber 13. The second check valve 5 is installed in the liquid inlet channel 12, and the second check valve 5 controls whether liquid enters the liquid inlet channel 12; The compression assembly 4 is disposed inside the base 1. The compression assembly 4 includes an adjuster for dynamically adjusting the volume of the compression channel and a transmission device 6 for converting rotational motion into linear motion. The adjuster is a compression rod 7, which is slidably disposed inside the compression channel 11. The compression rod 7 is connected to the transmission device 6. The motor 2 is installed inside the base 1, and the output shaft of the motor 2 is connected to the transmission device 6; The motor 2 drives the compression rod 7 to rise and fall along the compression channel 11 through the transmission device 6. When the compression rod 7 rises, the injection chamber 13 forms a negative pressure. Under the action of the negative pressure, the diaphragm 3 seals the outlet of the injection chamber 13. At the same time, the second one-way valve 5 opens the liquid inlet channel 12, and the external liquid enters the injection chamber 13 along the liquid inlet channel 12. When the compression rod 7 descends, it squeezes the liquid in the injection chamber 13. The liquid in the injection chamber 13 pushes the diaphragm 3 to open the outlet of the injection chamber 13 and spray it outward along the injection port. At the same time, the second one-way valve 5 closes the liquid inlet channel 12.

[0049] Furthermore, the side wall of the base 1 is provided with conductive contacts, and the motor 2 is electrically connected to the conductive contacts.

[0050] Furthermore, the second one-way valve 5 includes a ball 51, a spring 52, and an inlet nozzle 53, the inlet nozzle 53 being inserted into the inlet channel 12; The ball bearing 51 is disposed in the liquid inlet channel 12 near the liquid inlet nozzle 53. The spring 52 is placed inside the liquid inlet channel 12. One end of the spring 52 abuts against the inner wall of the liquid inlet channel 12, and the other end of the spring 52 abuts against the ball bearing 51. The spring 52 constitutes the reset mechanism of the ball bearing 51. The ball bearing 51 moves to block or open the liquid inlet nozzle 53.

[0051] Furthermore, the transmission device 6 includes an upper component 61 and a lower component 62. The upper component 61 includes a connecting part 611 and an insertion part 612. The outer wall of the insertion part 612 is provided with a wave-shaped groove 6121. The upper end of the connecting part 611 is connected to a speed reduction device, and the lower end of the connecting part 611 is connected to the insertion part 612. The lower component 62 includes a lower seat 621 and a compression rod 7. The lower seat 621 has a receiving cavity 622, and the inner wall of the receiving cavity 622 is provided with a protrusion 623. The compression rod 7 is located at the bottom of the lower seat 621. The insertion part 612 is inserted into the receiving cavity 622, and the protrusion 623 is inserted into the wavy groove 6121. The upper component 61 rotates so that the protrusion 623 slides along the wavy groove 6121, thereby driving the lower component 62 to rise and fall. The compression rod 7 follows the lower component 62 to rise and fall.

[0052] Furthermore, it also includes an inner seat 8, which is provided with a movable cavity 81, and the inner seat 8 is provided with a compression channel 11, a liquid inlet channel 12 and a spray cavity 13, and the inlet of the compression channel 11 is connected to the movable cavity 81; The lower seat 621 has a limiting protrusion 623 on its outer wall, and the cavity wall of the movable cavity 81 has a limiting groove 82 along its height direction. The lower seat 621 is slidably placed in the movable cavity 81, and the limiting protrusion 623 is inserted into the limiting groove 82. The limiting groove 82 restricts the sliding direction of the limiting protrusion 623, thereby restricting the sliding direction of the lower seat 621. The compression rod 7 includes a rod body 71 and a sealing ring 72. The sealing ring 72 is fitted onto the rod body 71 and seals the gap between the compression channel 11 and the rod body 71.

[0053] Furthermore, the reduction device 9 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 611.

[0054] Furthermore, it also includes a liquid storage tank 10, which is provided with an inlet 101 communicating with the liquid storage tank and an outlet 102 communicating with the liquid storage tank 10, and the inlet 101 is provided with a plug 103. The base 1 is provided with a liquid storage tank cavity 15. The bottom of the liquid storage tank cavity 15 has a positioning channel 16 that connects to the liquid inlet channel 12. The liquid storage tank 10 sits in the liquid storage tank cavity 15, and the liquid outlet 102 is inserted into the positioning channel 16.

[0055] Furthermore, the bottom of the base 1 is provided with light-therapy lamp beads at intervals around the nozzle 14.

[0056] In other embodiments, the regulator is a membrane whose volume increases or decreases by injecting or extracting air. The membrane is disposed within a compression channel, and the change in the volume of the membrane changes the volume of the compression channel, thereby switching between positive and negative pressure in the compression channel.

[0057] Combination Figures 11 to 13 As shown, a nursing comb includes a comb 20, a battery, and a circuit board. The comb 20 has an installation opening 201, and a power supply contact 202 is provided on the inner wall of the installation opening 201. The battery and the circuit board are disposed inside the comb 20, and the power supply contact 202 and the battery are electrically connected to the circuit board respectively. The base 1 is shaped to match the mounting port 201. The base 1 is detachably mounted on the mounting port 201, so that the conductive contact and the power supply contact 202 are electrically connected. The battery powers the spraying device 30, and the circuit board controls the start, stop and operation of the spraying device 30.

[0058] Furthermore, it also includes a comb holder and a drive device, wherein the comb holder includes a mounting base and comb teeth 40, the comb teeth 40 being spaced apart on the mounting base; The comb 20 has movable openings spaced around the mounting opening 201, the mounting base is movably disposed in the movable openings, and the comb teeth 40 extend outwards; The drive device is installed inside the comb 20 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 40 to swing, producing a massage effect.

[0059] Working principle of spray device 30: Motor 2 drives compression rod 7 to reciprocate up and down through reduction device 9 and transmission device 6. When compression rod 7 rises, the volume of injection chamber 13 increases and generates negative pressure. Diaphragm 3 closes injection port 14 under negative pressure. At the same time, liquid pressure overcomes the elastic force of spring 52 and pushes ball 51 to open liquid inlet channel 12, so that liquid in storage tank 10 automatically enters injection chamber 13.

[0060] When the compression rod 7 descends, the volume of the injection chamber 13 decreases, and the liquid is squeezed, pushing the diaphragm 3 to open the injection port 14 for high-speed injection. The spring 52 returns to its original position and pushes the ball 51 to close the liquid inlet channel 12 to prevent backflow.

[0061] The above process is repeated continuously, achieving automatic intake and stable spraying of the nursing solution, resulting in a delicate and uniform spray effect.

[0062] Assembly method of spray device 30 and comb 20 First, assemble the liquid storage tank 10 into the liquid storage tank receiving cavity 15 of the base body 1, so that the liquid outlet 102 is inserted into the positioning channel 16 and sealed and connected with the liquid inlet channel 12. Then, align the base 1 of the spray device 30 with the mounting port 201 of the comb 20 and insert it in a detachable manner, so that the conductive contacts of the base 1 are accurately connected with the power supply contacts 202 on the inner wall of the comb 20. Once installed, the spray device 30 can be powered by the comb 20 and controlled by its circuitry to achieve a combination of combing, conditioning liquid spraying, and massage functions.

Claims

1. A spraying device, comprising a motor, a reduction gear, a base, a first check valve, a compression assembly, and a second check valve, characterized in that: The seat is provided with a compression channel and a liquid inlet channel. The junction of the outlet of the compression channel and the outlet of the liquid inlet channel forms a spray chamber. The first one-way valve is provided at the outlet of the spray chamber. The seat has a spray port that communicates with the outlet of the spray chamber. The second check valve is installed in the liquid inlet channel, and the second check valve controls whether liquid enters the liquid inlet channel; The compression assembly includes a regulator for dynamically adjusting the volume of the compression channel. The regulator is disposed inside the compression channel. The input end of the reduction device is connected to the output shaft of the motor, and the output end of the reduction device is connected to the regulator. The motor drives the regulator to change the volume of the compression channel through the reduction device. When the volume of the compression channel increases, a negative pressure is formed in the injection chamber. The first one-way valve closes the outlet of the injection chamber, while the second one-way valve opens the liquid inlet channel, and external liquid enters the injection chamber along the liquid inlet channel. When the volume of the compression channel decreases, the first check valve opens the outlet of the injection chamber, and the liquid in the injection chamber is ejected outward along the injection port. At the same time, the second check valve closes the inlet channel.

2. The spraying device according to claim 1, characterized in that: The motor is mounted in the housing, and the compression assembly also includes a transmission device for converting rotational motion into linear motion. The adjuster is a compression rod, which is slidably mounted in the compression channel. The compression rod is connected to the transmission device, and the output shaft of the motor is connected to the transmission device. The motor drives the compression rod to rise and fall along the compression channel through the transmission device. When the compression rod rises, the injection chamber forms a negative pressure. The first one-way valve closes the outlet of the injection chamber, and at the same time the second one-way valve 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 first check valve opens the outlet of the injection chamber, and the liquid in the injection chamber is ejected outward along the injection port. At the same time, the second check valve closes the inlet channel.

3. The spraying device according to claim 2, characterized in that: The first one-way valve is a diaphragm. When the compression rod rises, a negative pressure is formed in the injection chamber. Under the action of the negative pressure, the diaphragm closes the outlet of the injection chamber. When the compression rod falls, the compression rod squeezes the liquid in the injection chamber, and the liquid in the injection chamber pushes the diaphragm to open the outlet of the injection chamber.

4. The spraying device according to claim 1, characterized in that: The side wall of the base is provided with conductive contacts, and the motor is electrically connected to the conductive contacts.

5. The spraying device according to claim 1, characterized in that: The second one-way valve includes a ball, a spring, and an inlet nozzle, the inlet nozzle being inserted into the inlet channel; The ball bearing is positioned in the liquid inlet channel near the liquid inlet nozzle. The spring is placed inside 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, and the ball bearing moves to block or open the liquid inlet nozzle.

6. The spraying device according to claim 2, characterized in that: 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 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 and a compression rod. The lower seat has a receiving cavity with protrusions on the inner wall of the receiving cavity. 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.

7. The spraying device according to claim 6, characterized in that: It also includes an inner seat, which is provided with a movable cavity, and the inner seat is provided with a compression channel, a liquid inlet channel and a jetting cavity, and the inlet of the compression channel is connected to the movable cavity; 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 sealing ring is fitted onto the rod body and seals the gap between the compression channel and the rod body.

8. The spraying device according to claim 6, characterized in that: The speed reduction device includes a first gear and a second gear, which mesh with each other. The first gear is connected to a motor, and the second gear is connected to a connecting part.

9. 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.

10. A care comb comprising the spraying device as described in any one of claims 4-9, characterized in that: The device includes a comb, a battery, a circuit board, a comb tooth holder, and a drive unit. 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 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. It also includes a comb holder and a drive device, wherein the comb holder includes a mounting base and comb teeth, and the comb teeth are spaced apart on the mounting base; The comb has movable openings spaced apart around the mounting opening, the mounting base is movably mounted inside the movable openings, and the comb teeth extend outwards; 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 is working, it drives the mounting base to swing, thereby driving the comb teeth to swing and producing a massage effect.

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