A portable dental treatment machine

CN224612746UActive Publication Date: 2026-08-11SHANGHAI LUCK MEDICAL INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

然而现有技术的可移动牙科治疗设备质量较大,基本在都在27kg以上,携带非常不便

Benefits of technology

[0016] The portable dental treatment machine provided by this utility model reduces the overall weight of the device (achieving a weight of less than 20kg), making it easy to carry; it adopts an electric handpiece and an electric saliva suction device, greatly reducing the amount of compressed air used; and it uses a DC air compressor, making it adaptable to various scenarios.

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Abstract

This utility model relates to a portable dental treatment machine, belonging to the technical field of dental treatment machines. It includes a housing assembly, an instrument assembly, and a power assembly. The power assembly is fixedly connected to the bottom surface inside the housing assembly, and the instrument assembly is fixedly connected to the power assembly inside the housing assembly, above it. The instrument assembly and the power assembly are connected. Advantages include: reduced overall device weight (less than 20kg), easy portability; the use of an electric handpiece and an electric saliva suction device significantly reduces compressed air consumption; and the use of a DC air compressor allows for adaptation to various scenarios.
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Description

Technical Field

[0001] This utility model relates to the field of dental treatment machine technology, and more specifically, to a portable dental treatment machine. Background Technology

[0002] As living conditions improve, people are paying more and more attention to their teeth. When dental diseases occur or teeth need cleaning, they need to go to the hospital for specialist treatment, where dental treatment machines, commonly known as dental chairs, are used.

[0003] Dental chairs integrate various treatment tools, such as handpieces for drilling, ultrasonic scalers for removing tartar, and saliva suction devices for removing wastewater from the mouth. Conventional dental chairs are bulky and heavy, making them inconvenient to move. For certain individuals and situations, a portable dental treatment device is needed. However, current portable dental treatment devices are quite heavy, generally weighing over 27 kg, making them very inconvenient to carry.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this invention is to provide a portable dental treatment machine that reduces the overall weight of the device, is easy to carry, greatly reduces the amount of compressed air used, and can be adapted to various scenarios.

[0006] This utility model provides a portable dental treatment machine, including a housing assembly, an instrument assembly, and a power assembly; the power assembly is fixedly connected to the bottom surface inside the housing assembly, and the instrument assembly is fixedly connected to the housing assembly above the power assembly, and the instrument assembly and the power assembly are connected.

[0007] Furthermore, the box assembly includes a lower box cover, an upper box cover, rollers, a pull rod, a first handle, a waterproof and breathable valve, a second handle, a lower box cover support point, and an upper box cover support point; the lower box cover is a cuboid with a hollow interior and an open front end, and the instrument assembly and the power assembly are connected inside the lower box cover; the upper box cover is hinged to the right side of the front end of the lower box cover, the pull rod is connected to the rear end of the lower box cover, two rollers are connected to the bottom of the lower box cover, the waterproof and breathable valve is provided on the side of the lower box cover, the first handle is also hinged to the side of the lower box cover, and the second handle is hinged to the top of the lower box cover; two lower box cover support points are also fixedly connected to the bottom surface of the lower box cover between the two rollers, and two upper box cover support points are fixedly connected to the bottom of the upper box cover.

[0008] Furthermore, the box assembly also includes a lower box cover limiting part, a lower box cover limiting rib, and an upper box cover limiting block; a lower box cover limiting part is provided at the right side opening of the front end of the lower box cover, and the lower box cover limiting part abuts against the side opening of the upper box cover; the upper box cover limiting block is connected to the outer side opening of the upper box cover, and the lower box cover limiting rib is connected to the outer side opening of the front end of the lower box cover.

[0009] Furthermore, the instrument assembly includes a mounting plate, a controller, a working pressure gauge, a powerful suction device, a weak suction handpiece, an air tank, a water bottle, a three-way spray gun, a wastewater cup, an operating screen, an electric motor, and an ultrasonic scaler. The mounting plate has an L-shaped cross-section. The working pressure gauge and the operating screen are connected to the front of the mounting plate. The air tank, the water bottle, the wastewater cup, and the controller are connected to the bottom of the mounting plate. The controller is connected to the power assembly, and the operating screen is connected to the controller. The powerful suction device and the weak suction handpiece are both connected to the wastewater cup, which is connected to a negative pressure unit. The water bottle is connected to the air tank, and an air compressor is connected to the air tank. The three-way spray gun, the electric motor, and the ultrasonic scaler are connected to the water bottle via a water outlet pipe.

[0010] Furthermore, a gas tank connector is connected to the lower end of the gas tank, and an exhaust valve is connected to the side of the gas tank connector. The exhaust valve is connected to a drain connector through a gas pipe.

[0011] Furthermore, the upper end of the wastewater cup is provided with a wastewater cup sealing cap, and the wastewater cup sealing cap is provided with a negative pressure air connector and a saliva suction handpiece connector; the saliva suction handpiece connector is connected to the powerful suction device and the weak saliva suction handpiece through a conduit, the negative pressure air connector is connected to an air filter through a conduit, and the lower end of the air filter is connected to the negative pressure machine.

[0012] Furthermore, a liquid level sensor is installed in the wastewater cup, and the liquid level sensor is connected to the controller.

[0013] Furthermore, a support rod is vertically connected to the bottom of the mounting plate, and a support block is vertically connected to the lower end of the support rod. A bracket is hinged to the support rod above the support block. A compression spring is connected between the bracket and the support block. The wastewater cup sealing cover is fixed to the bottom of the mounting plate and is located directly above the bracket. A limit plate is connected between the support rod and the inner wall of the lower box cover. The bottom of the wastewater cup is placed on the bracket, and the opening of the wastewater cup is sealed to the wastewater cup sealing cover.

[0014] Furthermore, the power assembly includes a housing, a drive circuit board, an air compressor, a cooling fan, a negative pressure compressor, a solenoid valve, and a switching power supply. The housing is generally rectangular in shape, with heat dissipation vents on both the left and right sides, and a cooling fan installed in each vent. The drive circuit board, the air compressor, the negative pressure compressor, the solenoid valve, and the switching power supply are installed inside the housing, and all are connected to the drive circuit board. A wire connector and a compressed air connector are located on the top of the housing. One end of the wire connector is connected to the drive circuit board, and the other end is connected to the controller. One end of the compressed air connector is connected to the air tank, and the other end is connected to the air compressor via the solenoid valve.

[0015] Furthermore, a DC24V power socket, an AC100-240V power socket, a DC / AC conversion switch, and a power adjustment switch are provided on the back of the housing. The DC24V power socket, the AC100-240V power socket, the DC / AC conversion switch, and the power adjustment switch are all connected to the drive circuit board.

[0016] The portable dental treatment machine provided by this utility model reduces the overall weight of the device (achieving a weight of less than 20kg), making it easy to carry; it adopts an electric handpiece and an electric saliva suction device, greatly reducing the amount of compressed air used; and it uses a DC air compressor, making it adaptable to various scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the disassembled structure of the portable dental treatment machine provided in an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of a portable dental treatment machine.

[0019] Figure 3 for Figure 1 A top view of a portable dental treatment machine.

[0020] Figure 4 for Figure 3 Enlarged view of part A in the image.

[0021] Figure 5 for Figure 3 Another enlarged view of part A in the image.

[0022] Figure 6 for Figure 1 A front view diagram of a portable dental treatment machine.

[0023] Figure 7 for Figure 1 A schematic diagram of the instrument components of a portable dental treatment machine.

[0024] Figure 8 for Figure 1 A schematic diagram of the wastewater cup of a portable dental treatment machine.

[0025] Figure 9 for Figure 1 A schematic diagram of the liquid level sensor in a portable dental treatment machine.

[0026] Figure 10 for Figure 1 A schematic diagram of the cross-sectional structure of the wastewater cup of a portable dental treatment machine.

[0027] Figure 11 for Figure 1 A schematic diagram of the internal structure of the power unit of a portable dental treatment machine.

[0028] Figure 12 for Figure 1 A schematic diagram of the power unit of a portable dental treatment machine.

[0029] The reference numerals and components involved in the accompanying drawings are shown below:

[0030] 1. Box assembly 11. Lower box cover 12. Upper box cover

[0031] 13. Roller 14. Pull rod 15. First handle

[0032] 16. Waterproof and breathable valve; 17. Second handle; 18. Lower cover support point.

[0033] 19. Upper cover support point 191; Lower cover limiting part 192; Lower cover limiting rib

[0034] 193. Upper box cover limiting block 2; Instrument assembly 21; Mounting plate

[0035] 22. Controller; 23. Working pressure gauge; 24. Powerful suction device

[0036] 25. Weak suction handpiece 26. Air tank 27. Water purifier bottle

[0037] 28. Three-in-one spray gun 29. Wastewater cup 291. Control screen

[0038] 292. Electric motor; 293. Ultrasonic dental scaler; 294. Gas cylinder connector

[0039] 295. Air vent valve; 296. Drain connector; 297. Wastewater cup sealing cap.

[0040] 298. Negative pressure air connector; 299. Saliva suction handpiece connector; 2991. Liquid level sensor

[0041] 2992, Support rod; 2993, Support block; 2994, Bracket.

[0042] 2995, Compression Spring; 2996, Limiting Plate; 3, Power Component

[0043] 31. Housing; 32. Drive circuit board; 33. Negative pressure unit

[0044] 34. Air compressor 35. Air filter 36. Cooling fan

[0045] 37. Solenoid valve; 38. Switching power supply; 39. Heat sink.

[0046] 391. Electrical wire connector; 392. Compressed air connector; 393. DC 24V power socket.

[0047] 394. AC100-240 power socket; 395. DC / AC transfer switch; 396. Power adjustment switch (high / low voltage). Detailed Implementation

[0048] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0049] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0050] Example 1

[0051] Figure 1 This is a schematic diagram showing the disassembled structure of the portable dental treatment machine provided in this embodiment of the utility model. Please refer to... Figure 1 The portable dental treatment machine provided in this embodiment of the utility model includes a housing assembly 1, an instrument assembly 2, and a power assembly 3; the power assembly 3 is fixedly connected to the bottom surface inside the housing assembly 1, and the instrument assembly 2 is fixedly connected to the housing assembly 1 above the power assembly 3, and the instrument assembly 2 and the power assembly 3 are connected.

[0052] Figure 2 for Figure 1 A schematic diagram of the structure of a portable dental treatment machine. Figure 6 for Figure 1 A front view diagram of a portable dental treatment machine. Please refer to... Figure 2 , Figure 6The box assembly 1 of this utility model includes a lower box cover 11, an upper box cover 12, rollers 13, a pull rod 14, a first handle 15, a waterproof and breathable valve 16, a second handle 17, a lower box cover support point 18, and an upper box cover support point 19. The lower box cover 11 is a cuboid with a hollow interior and an open front end. The instrument assembly 2 and the power assembly 3 are connected inside the lower box cover 11. The upper box cover 12 is hinged to the right side of the front end of the lower box cover 11, and the rear end of the lower box cover 11 is connected to the pull rod 14. The rod 14 has two rollers 13 connected to the bottom of the lower cover 11. A waterproof and breathable valve 16 is provided on the side of the lower cover 11. A first handle 15 is also hinged to the side of the lower cover 11. A second handle 17 is hinged to the top of the lower cover 11. Two lower cover support points 18 are fixedly connected to the bottom surface of the lower cover 11 between the two rollers 13. Two upper cover support points 19 are fixedly connected to the bottom of the upper cover 12.

[0053] It should be noted that the upper cover 12 is hinged to the front right side of the lower cover 11. The upper cover 12 opens from left to right, allowing the right hand to easily access and operate instruments during clinical use. The case assembly 1 is designed like a suitcase, sealed by the lower cover 11 and the upper cover 12. It includes a waterproof and breathable valve 16, a retractable pull rod 14, and casters 13 for easy movement. The first handle 15 and the second handle 17 facilitate retrieval. The lower cover support point 18 and the upper cover support point 19 increase the stability of the equipment. Furthermore, the lower cover support point 18 and the upper cover support point 19 are all in the same plane as the lower end face of the casters 13, ensuring the stability of the equipment.

[0054] Figure 3 for Figure 1 A top view of a portable dental treatment machine. Figure 4 for Figure 3 Enlarged view of part A in the image. Figure 5 for Figure 3 Another enlarged view of part A in the image. Please refer to... Figure 3 , Figure 4 , Figure 5 The box assembly 1 of this utility model further includes a lower box cover limiting part 191, a lower box cover limiting rib 192, and an upper box cover limiting block 193; the lower box cover limiting part 191 is provided at the right side opening of the front end of the lower box cover 11, and the lower box cover limiting part 191 abuts against the side opening of the upper box cover 12; the upper box cover limiting block 193 is connected to the outer side opening of the upper box cover 12, and the lower box cover limiting rib 192 is connected to the outer side opening of the front end of the lower box cover 11.

[0055] It should be noted that when the upper cover 12 is rotated counterclockwise to about 62 degrees, the lower cover limiting part 191 blocks the upper cover 12 from continuing to rotate. At this time, it is necessary to increase the rotational force to an acceptable level so that the upper cover 12 can bypass the lower cover limiting part 191. When rotated to about 103 degrees, the upper cover limiting block 193 is completely blocked by the lower cover limiting rib 192. At this time, the upper cover 12 is limited. When closing, it is necessary to rotate it clockwise with force. The upper cover 12 is limited to about 103 degrees, making it less likely for the equipment to tip over due to external force.

[0056] Figure 7 for Figure 1 A schematic diagram of the instrument components of a portable dental treatment machine. Further reference... Figure 6 , Figure 7 The instrument assembly 2 of this utility model includes a mounting plate 21, a controller 22, a working pressure gauge 23, a powerful suction device 24, a weak suction handpiece 25, an air tank 26, a water bottle 27, a three-way spray gun 28, a wastewater cup 29, an operation screen 291, an electric motor 292, and an ultrasonic scaler 293. The mounting plate 21 has an L-shaped cross-section. The working pressure gauge 23 and the operation screen 291 are connected to the front of the mounting plate 21, and the air tank 26, the water bottle 27, and the wastewater cup are connected to the bottom of the mounting plate 21. 29 and the controller 22 are connected, the controller 22 is connected to the power assembly 3, and the operation screen 291 is connected to the controller 22; the powerful suction device 24 and the weak suction handpiece 25 are both connected to the wastewater cup 29, and the wastewater cup 29 is connected to the negative pressure machine 33; the water purification bottle 27 is connected to the air storage tank 26, and the air storage tank 26 is connected to the air compressor 34; the three-way spray gun 28, the electric motor 292 and the ultrasonic scaler 293 are connected to the water purification bottle 27 through the water outlet pipe.

[0057] It should be noted that the volume of the wastewater cup 29 is twice that of the purified water bottle 27. A certain amount of compressed air is injected into the purified water bottle 27, and the water outlet is controlled by the solenoid valve 37. This utility model integrates a variety of dental handpiece instruments (such as a powerful suction device 24, a weak suction handpiece 25, an ultrasonic scaler, a three-way spray gun 28, and an electric motor 292), which can meet the treatment needs of most dental diseases. Compared with the existing low-speed and high-speed machines used in dentistry, which are pneumatic turbine handpieces and require a high continuous air supply during operation, inevitably leading to an increase in the power and size of the air compressor 34, this utility model uses an electric motor 292 with a built-in brushless motor, which is electrically driven and is a mature existing product, greatly reducing the amount of compressed air used.

[0058] Further reference Figure 7In this invention, a gas tank connector 294 is connected to the lower end of the gas storage tank 26, and an exhaust valve 295 is connected to the side of the gas tank connector 294. The exhaust valve 295 is connected to a drain connector 296 through a gas pipe.

[0059] It should be noted that when there is water in the gas storage tank 26, the water will be stored at the bottom due to gravity. In order to remove the internal water, an exhaust valve 295 is installed at the bottom of the gas storage tank 26. The air pipe connects the exhaust valve 295 and the drain connector 296 so that water can be manually drained periodically to prevent it from entering the mobile phone pipe.

[0060] Figure 8 for Figure 1 A schematic diagram of the wastewater cup of a portable dental treatment machine. Please refer to... Figure 8 The wastewater cup 29 of this utility model has a wastewater cup sealing cap 297 on its upper end. The wastewater cup sealing cap 297 is provided with a negative pressure air connector 298 and a saliva suction handpiece connector 299. The saliva suction handpiece connector 299 is connected to the powerful suction device 24 and the weak saliva suction handpiece 25 through a conduit. The negative pressure air connector 298 is connected to the air filter 35 through a conduit. The lower end of the air filter 35 is connected to the negative pressure machine 33.

[0061] It should be noted that when the negative pressure machine 33 is working, the airflow direction is the intake of the powerful suction device 24 and the weak saliva handpiece 25. The air enters the wastewater cup 29 through the wastewater inlet at the lower end of the saliva handpiece connector 299, and then flows into the negative pressure machine 33 through the air filter 35 from the negative pressure air connector 298. After the saliva handpiece has a certain suction force, it sucks away the wastewater in the mouth and flows into the wastewater cup 29 from the wastewater inlet. Due to gravity, the wastewater will fall to the bottom of the wastewater cup 29 and will not enter the negative pressure air connector 298.

[0062] Figure 9 for Figure 1 A schematic diagram of the liquid level sensor in a portable dental treatment machine. Please refer to... Figure 9 The present invention includes a liquid level sensor 2991 installed in the wastewater cup 29, and the liquid level sensor 2991 is connected to the controller 22.

[0063] It should be noted that when the wastewater collection reaches a certain amount, the negative pressure machine 33 needs to be stopped by sensing to prevent wastewater from entering the negative pressure machine 33 and causing damage to the equipment. This utility model achieves this through the liquid level sensor 2991.

[0064] Figure 10 for Figure 1 A cross-sectional structural diagram of the wastewater cup of a portable dental treatment machine. Please refer to... Figure 10The mounting plate 21 of this utility model has a support rod 2992 vertically connected to its bottom. A support block 2993 is vertically connected to the lower end of the support rod 2992. A support rod 2994 is hinged to the support rod 2992 above the support block 2993. A compression spring 2995 is connected between the support rod 2994 and the support block 2993. The wastewater cup sealing cover 297 is fixed to the bottom of the mounting plate 21 and is located directly above the support rod 2994. A limit plate 2996 is connected between the support rod 2992 and the inner wall of the lower box cover 11. The bottom of the wastewater cup 29 is placed on the support rod 2994, and the opening of the wastewater cup 29 is sealed on the wastewater cup sealing cover 297.

[0065] It should be noted that the opening of the wastewater cup 29 needs to be sealed with the wastewater cup sealing cap 297, which is achieved by a sealing ring. One side of the sealing ring has adhesive backing and is attached to the annular groove of the wastewater cup sealing cap 297. After the opening of the wastewater cup 29 contacts the sealing ring, the bottom of the wastewater cup 29 is supported by the support rod 2994. Through the principle of the compression spring 2995, the support rod 2994 has an upward force, thereby supporting the wastewater cup 29 and achieving a seal.

[0066] When the wastewater cup 29 needs to be removed, press the other side of the pivot of the support rod 2994 to remove the wastewater cup 29. When the support rod 2994 is pressed, the lower end of the support rod will move to the left due to the force. In order to increase stability, a limiting plate 2996 is fixed at the support block 2993. When the support rod is under force, the limiting plate 2996 is restricted from moving by the inner wall of the lower box cover 11.

[0067] Figure 11 for Figure 1 A schematic diagram of the internal structure of the power unit of a portable dental treatment machine. Figure 12 for Figure 1 A schematic diagram of the power unit of a portable dental treatment machine. Please refer to... Figure 11 , Figure 12The power assembly 3 of this utility model includes a housing 31, a drive circuit board 32, an air compressor 34, a cooling fan 36, a negative pressure unit 33, a solenoid valve 37, and a switching power supply 38. The housing 31 is generally rectangular, and heat dissipation vents 39 are provided on both the left and right sides of the housing 31. A cooling fan 36 is installed in each of the heat dissipation vents 39. The drive circuit board 32, the air compressor 34, the negative pressure unit 33, the solenoid valve 37, and the switching power supply 38 are installed inside the housing 31. The cooling fan 36, the negative pressure unit 33, the solenoid valve 37, and the switching power supply 38 are all connected to the drive circuit board 32. A wire connector 391 and a compressed air connector 392 are provided on the top of the housing 31. One end of the wire connector 391 is connected to the drive circuit board 32, and the other end is connected to the controller 22. One end of the compressed air connector 392 is connected to the air tank 26, and the other end is connected to the air compressor 34 via the solenoid valve 37.

[0068] Furthermore, the present invention provides a DC24V power socket 393, an AC100-240 power socket, a DC / AC conversion switch 395, and a power adjustment switch 396 on the rear of the housing 31. The DC24V power socket 393, the AC100-240 power socket, the DC / AC conversion switch 395, and the power adjustment switch 396 are all connected to the drive circuit board 32.

[0069] It should be noted that the outer casing 31 is made of aluminum alloy, which is lightweight and can shield electromagnetic interference; the heat dissipation vent 39 has a built-in cooling fan 36 with airflow in the same direction to achieve internal air exchange and effectively reduce the internal temperature; the drive circuit board 32 is connected to the controller 22 through the wire connector 391 to provide power to the controller 22 and transmit electrical signals.

[0070] It can use AC power with a global voltage of 100-240V, or DC power of 24V; the voltage interface is DC24V power socket 393 and AC100-240V power socket, and the input conversion between the two power supplies is realized by DC-AC conversion switch 395.

[0071] In addition, the present invention uses a drive circuit board 32 to control an air compressor 34, a cooling fan 36, a negative pressure machine 33, and a solenoid valve 37, and a switching power supply 38 to convert AC power to 24V DC power; the drive circuit board 32 collects the pressure value of the air tank 26 component and controls the air compressor 34 and the solenoid valve 37 to output compressed air to the compressed air connector 392, which is connected to the air tank connector 294 through a pipe.

[0072] The drive circuit board 32 collects electrical signals to control the negative pressure machine 33. The air inlet of the negative pressure machine 33 is connected to the air filter 35, and the exhaust port of the negative pressure machine 33 is connected to the negative pressure exhaust port on the negative pressure machine 33. The negative pressure pneumatic operation and shutdown are controlled by the sensor switches of the powerful suction device 24 and the weak suction handpiece 25.

[0073] As can be seen from the above description, the advantages of this utility model are:

[0074] This utility model of a portable dental treatment machine reduces the overall weight of the device (to less than 20kg), making it easy to carry; it uses an electric handpiece and an electric saliva suction device, greatly reducing the amount of compressed air used; and it uses a DC air compressor, making it adaptable to various scenarios.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A portable dental treatment device, characterized in that, It includes a housing assembly (1), an instrument assembly (2), and a power assembly (3); The power assembly (3) is fixedly connected to the bottom surface inside the housing assembly (1), and the instrument assembly (2) is fixedly connected to the power assembly (3) inside the housing assembly (1) above it. The instrument assembly (2) and the power assembly (3) are connected. The box assembly (1) includes a lower box cover (11), an upper box cover (12), rollers (13), a pull rod (14), a first handle (15), a waterproof and breathable valve (16), a second handle (17), a lower box cover support point (18), and an upper box cover support point (19). The lower box cover (11) is a rectangular parallelepiped with a hollow interior and an open front end. The instrument assembly (2) and the power assembly (3) are connected inside the lower box cover (11). The upper box cover (12) is hinged to the right side of the front end of the lower box cover (11), and the rear end of the lower box cover (11) is connected to the upper box cover (12). A pull rod (14) is connected to two rollers (13) at the bottom of the lower cover (11). A waterproof and breathable valve (16) is provided on the side of the lower cover (11). A first handle (15) is also hinged to the side of the lower cover (11). A second handle (17) is hinged to the top of the lower cover (11). Two lower cover support points (18) are also fixedly connected between the two rollers (13) on the bottom surface of the lower cover (11). Two upper cover support points (19) are fixedly connected to the bottom of the upper cover (12). The box assembly (1) further includes a lower box cover limiting part (191), a lower box cover limiting rib (192), and an upper box cover limiting block (193); the lower box cover limiting part (191) is provided at the right side opening of the front end of the lower box cover (11), and the lower box cover limiting part (191) abuts against the side opening of the upper box cover (12); the upper box cover limiting block (193) is connected at the outer side opening of the upper box cover (12), and the lower box cover limiting rib (192) is connected at the outer side opening of the front end of the lower box cover (11).

2. The portable dental treatment device according to claim 1, characterized in that, The instrument assembly (2) includes a mounting plate (21), a controller (22), a working pressure gauge (23), a powerful suction device (24), a weak suction handpiece (25), an air tank (26), a water bottle (27), a three-way spray gun (28), a waste water cup (29), an operation screen (291), an electric motor (292), and an ultrasonic scaler (293). The mounting plate (21) has an L-shaped cross section. The front of the mounting plate (21) is connected to the working pressure gauge (23) and the operation screen (291). The bottom surface of the mounting plate (21) is connected to the gas storage tank (26), the water purification bottle (27), the waste water cup (29) and the controller (22). The controller (22) is connected to the power assembly (3). The operation screen (291) is connected to the controller (22). The powerful suction device (24) and the weak suction handpiece (25) are both connected to the wastewater cup (29), and the wastewater cup (29) is connected to the negative pressure machine (33); The water bottle (27) is connected to the air tank (26), and an air compressor (34) is connected to the air tank (26). The three-in-one spray gun (28), the electric motor (292) and the ultrasonic scaler (293) are connected to the water bottle (27) through the water outlet pipe.

3. The portable dental treatment device according to claim 2, characterized in that, A gas tank connector (294) is connected to the lower end of the gas tank (26), and an exhaust valve (295) is connected to the side of the gas tank connector (294). The exhaust valve (295) is connected to a drain connector (296) through a gas pipe.

4. The portable dental treatment device according to claim 2, characterized in that, The wastewater cup (29) is provided with a wastewater cup sealing cap (297) on its upper end. The wastewater cup sealing cap (297) is provided with a negative pressure air connector (298) and a saliva suction handpiece connector (299). The saliva suction handpiece connector (299) is connected to the powerful suction device (24) and the weak saliva suction handpiece (25) via a conduit. The negative pressure air connector (298) is connected to the air filter (35) via a conduit. The lower end of the air filter (35) is connected to the negative pressure machine (33).

5. The portable dental treatment device according to claim 2, characterized in that, A liquid level sensor (2991) is installed in the wastewater cup (29), and the liquid level sensor (2991) is connected to the controller (22).

6. The portable dental treatment device according to claim 4, characterized in that, A support rod (2992) is vertically connected to the bottom of the mounting plate (21). A support block (2993) is vertically connected to the lower end of the support rod (2992). A support rod (2994) is hinged to the support rod (2992) above the support block (2993). A compression spring (2995) is connected between the support rod (2994) and the support block (2993). The wastewater cup sealing cover (297) is fixed to the bottom of the mounting plate (21). The wastewater cup sealing cover (297) is located directly above the support rod (2994). A limit plate (2996) is connected between the support rod (2992) and the inner wall of the lower box cover (11). The bottom of the wastewater cup (29) is placed on the support rod (2994), and the opening of the wastewater cup (29) is sealed on the wastewater cup sealing cap (297).

7. The portable dental treatment device according to claim 2, characterized in that, The power assembly (3) includes a housing (31), a drive circuit board (32), an air compressor (34), a cooling fan (36), a negative pressure unit (33), a solenoid valve (37), and a switching power supply (38). The outer shell (31) is in the shape of a cuboid, and heat dissipation vents (39) are provided on both the left and right sides of the outer shell (31). A cooling fan (36) is installed in the heat dissipation vents (39). The drive circuit board (32), the air compressor (34), the negative pressure machine (33), the solenoid valve (37) and the switching power supply (38) are installed inside the housing (31). The air compressor (34), the cooling fan (36), the negative pressure machine (33), the solenoid valve (37) and the switching power supply (38) are all connected to the drive circuit board (32). A wire connector (391) and a compressed air connector (392) are provided on the top of the housing (31). One end of the wire connector (391) is connected to the drive circuit board (32), and the other end of the wire connector (391) is connected to the controller (22). One end of the compressed air connector (392) is connected to the air tank (26), and the other end of the compressed air connector (392) is connected to the air compressor (34) through a solenoid valve (37).

8. The portable dental treatment device according to claim 7, characterized in that, A DC24V power socket (393), an AC100-240 power socket, a DC / AC conversion switch (395), and a power adjustment switch (396) are provided on the back of the housing (31). The DC24V power socket (393), the AC100-240 power socket, the DC / AC conversion switch (395), and the power adjustment switch (396) are all connected to the drive circuit board (32).