Dental sand blasting machine

Abstract

The utility model relates to a dental sand blasting machine, which comprises an air supply device, a sand blasting device and a control device, the sand blasting device is used for spraying tooth sand powder to the tooth surface of the user; the air pressure adjusting device comprises an air inlet pipe, an air outlet pipe, a first air pressure monitoring unit and an air pressure adjusting unit; the first air pressure monitoring unit comprises a first air pressure sensor, and the air pressure adjusting unit comprises a pressure adjusting valve; one end of the air inlet pipe is connected with the air supply device, and the other end is connected with the air inlet end of the pressure regulating valve; the other end of the air outlet pipe is connected with the air outlet end of the pressure regulating valve; the first air pressure sensor is arranged between the air inlet pipe and the air inlet end of the pressure regulating valve; and the control system is electrically connected with the first air pressure sensor and the pressure regulating valve respectively. According to the dental sand blasting machine disclosed by the utility model, open-loop adjustment is formed by arranging the first air pressure sensor, and the dental sand blasting machine has the advantages of automatic adjustment and reduction of errors and hysteresis of manual operation.

Description

Technical Field

[0001] This utility model relates to the field of dental cleaning equipment technology, and in particular to a dental air polisher. Background Technology

[0002] With the improvement of people's living standards, dental health has received increasing attention, and regular teeth cleaning is an effective way to prevent dental diseases. Common teeth cleaning equipment includes ultrasonic scalers and dental air polishers. Ultrasonic scalers generate high-frequency vibrations, causing the working tip to quickly break down plaque and tartar, which are then cleaned with water. Dental air polishers use a high-pressure airflow to atomize special abrasive powder onto the tooth surface to remove plaque and stains. They can clean plaque and stains in interdental spaces that are difficult for ultrasonic scalers to reach, and their efficiency in removing surface stains is far superior, leading to their increasingly widespread use. However, people have found that dental air polishers are inconvenient to operate in different working environments and it is difficult to precisely control the amount of abrasive produced. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a dental sandblasting machine.

[0004] A dental air polishing machine includes: an air supply device for providing a high-pressure airflow to the dental air polishing machine; an air polishing device for spraying dental abrasive powder onto the user's tooth surface; and an air pressure regulating device including an air inlet pipe, an air outlet pipe, a first air pressure monitoring unit, and an air pressure regulating unit; one end of the air inlet pipe is connected to the air supply device, and the other end is connected to the air inlet of the air pressure regulating unit; one end of the air outlet pipe is connected to the air outlet of the air pressure regulating unit, and the other end is connected to the air polishing device; the first air pressure monitoring unit includes a first air pressure sensor, and the... A first air pressure sensor is disposed between the air intake pipe and the air intake end of the air pressure regulating unit, and is used to detect the input air pressure of the airflow entering the air intake pipe; the air pressure regulating unit includes a pressure regulating valve, the air intake pipe and the air outlet pipe are respectively connected to the air intake end and the air outlet end of the pressure regulating valve, and the pressure regulating valve has an air passage connecting its air intake end and the air outlet end; the pressure regulating valve is used to increase or decrease the air pressure of the output airflow flowing into the air outlet pipe; and a control system is electrically connected to the first air pressure sensor and the pressure regulating valve.

[0005] The dental sandblasting machine of this invention measures the input air pressure through a first air pressure sensor and feeds it back to the control system to form a switch adjustment. The control system controls the air pressure adjustment unit to increase or decrease the input air pressure according to the difference between the input air pressure and the set air pressure, so that the output air pressure is equal to the set air pressure, ensuring the accuracy of air pressure control and reducing the error of manual operation. At the same time, when the work requirements change, only the set air pressure needs to be changed through the control system, and the dental sandblasting machine will automatically adjust according to the new set air pressure, thereby avoiding the lag of manual adjustment.

[0006] Furthermore, the dental sandblasting machine also includes a second air pressure monitoring unit; the second air pressure monitoring unit includes a second air pressure sensor, which is disposed between the air outlet pipe and the air outlet end of the air pressure regulating unit and electrically connected to the control system, for detecting the output air pressure of the output airflow in the air outlet pipe and feeding it back to the control system.

[0007] Through the above technical solution, a closed-loop control is formed between the second air pressure monitoring unit, the first air pressure monitoring unit, and the air pressure regulating unit, which reduces control error and improves control accuracy.

[0008] Furthermore, the first air pressure monitoring unit further includes a first air pipe adapter, and the second air pressure monitoring unit further includes a second air pipe adapter; the air inlet pipe is connected to the air inlet end of the pressure regulating valve after passing through the first air pipe adapter; the first air pressure sensor is connected in parallel to the first air pipe adapter; the air outlet pipe is connected to the air outlet end of the pressure regulating valve after passing through the second air pipe adapter; and the second air pressure sensor is connected in parallel to the second air pipe adapter.

[0009] Through the above technical solution, the air inlet pipe, the first air pressure sensor and the pressure regulating valve, as well as the air outlet pipe, the second air pressure sensor and the pressure regulating valve, are connected by air pipe joints, which facilitates the quick assembly and disassembly of each component.

[0010] Furthermore, the first and second tracheal adapters are Y-type connectors.

[0011] Furthermore, the first air pressure monitoring unit also includes an alarm, which is electrically connected to the control system.

[0012] With the above technical solution, when no airflow is detected in the first air pressure sensor, an alarm will be triggered to remind the user, thus preventing the dental sandblasting machine from running idle for a long time and causing damage to the equipment.

[0013] Furthermore, the alarm is a buzzer or an LED warning light.

[0014] Furthermore, the air pressure regulating unit also includes a lead screw and a motor; the pressure regulating valve is also provided with a valve core, which is located in the air passage; one end of the lead screw is connected to the output end of the motor, and the other end is connected to the valve core; the motor is electrically connected to the control system.

[0015] The above technical solution uses a motor to drive a lead screw, which in turn moves the valve core within the ventilation channel, changing the ventilation area of ​​the channel and thus altering the output air pressure.

[0016] Furthermore, the motor is a servo motor.

[0017] Furthermore, the control system includes a control panel and an information processing module; the control panel is used for users to input a set air pressure signal; the information processing module is electrically connected to the first air pressure sensor, the second air pressure sensor, the alarm, the motor, and the control panel.

[0018] With the above technical solution, users can adjust the air pressure by inputting the set air pressure on the control panel, which is convenient and quick to use.

[0019] Furthermore, the information processing module is a microcontroller, a PLC controller, or an ARM chip.

[0020] The above technical solutions offer low-cost microcontrollers, PLC controllers, and ARM chips, fast signal processing speed, and stable control. Attached Figure Description

[0021] Figure 1 A schematic diagram of the modular structure of the dental sandblasting machine provided by this utility model;

[0022] Figure 2 A schematic diagram of the spatial structure of the air pressure regulating unit provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the signal transmission of the control system of the dental sandblasting machine provided by this utility model. Detailed Implementation

[0024] The applicant conducted research and analysis on existing dental sandblasting machines and found that the inconvenience and difficulty in accurately controlling the sand output during use are due to the following reasons: Existing dental sandblasting machines have multiple preset speeds, each corresponding to a different air pressure value on the pressure regulating valve. During operation, the valve cap is manually rotated to switch between different speeds, thereby controlling the pressure regulating valve to change the air pressure entering the sandblasting gun and thus the sand output. However, this manual rotation control method cannot achieve precise control and cannot adjust immediately when work requirements change, exhibiting a certain lag. Furthermore, due to equipment wear, unstable voltage, and air pipe blockage, the air pump connected to the pressure regulating valve often experiences unstable air pressure, resulting in a discrepancy between the preset air pressure and the actual output pressure of the pressure regulating valve, affecting the accuracy of the sand output.

[0025] Based on this, the present invention provides a dental sandblasting machine. It measures the input air pressure and feeds it back to the control system by setting a first air pressure monitoring unit between the air inlet pipe and the air pressure regulating unit. The control system controls the air pressure regulating unit to increase or decrease the input air pressure based on the difference between the input air pressure and the set air pressure, so that the output air pressure is equal to the set air pressure. The open-loop control method, which controls the working state of the air pressure regulating device based on the difference between the input and set air pressure, ensures the accuracy of the air pressure regulating device and reduces errors from manual operation. Simultaneously, when work requirements change, the control system changes the set air pressure, and the dental sandblasting machine automatically adjusts according to the new set air pressure, thus avoiding the lag of manual adjustment. The following is one embodiment of the dental sandblasting machine provided by the present invention:

[0026] Please refer to Figures 1 to 2 , Figure 1 A schematic diagram of the modular structure of the dental sandblasting machine provided by this utility model; Figure 2 A schematic diagram of the spatial structure of the air pressure regulating unit provided by this utility model; Figure 3 This is a schematic diagram of the signal transmission of the control system of the dental sandblasting machine provided by this utility model.

[0027] This utility model provides a dental sandblasting machine, including an air supply device 1, an air pressure regulating device 2, a sandblasting device 3, and a control system 4. The air outlet pipe of the air supply device 1 is connected to the input end of the air pressure regulating device 2, the sandblasting device 3 is connected to the output end of the air pressure regulating device 2, and the control system 4 is electrically connected to the air pressure regulating device 2.

[0028] The air supply device 1 is used to supply high-pressure airflow to the dental sandblasting machine. An air compressor, which is a technology in the prior art, can be selected and will not be described in detail here.

[0029] The air pressure regulating device 2 includes an air inlet pipe 21, an air outlet pipe 22, a first air pressure monitoring unit 23, and an air pressure regulating unit 24. One end of the air inlet pipe 21 is connected to the air outlet pipe of the air supply device 1, and the other end is connected to the air inlet end of the air pressure regulating unit 24 after passing through the first air pressure monitoring unit 23. One end of the air outlet pipe 22 is connected to the sandblasting device 3, and the other end is connected to the air outlet end of the air pressure regulating unit 24.

[0030] The first air pressure monitoring unit 23 includes a first air pipe adapter 231 and a first air pressure sensor 232. The air intake pipe 21 connects to the air intake end of the air pressure regulating unit 24 after passing through the first air pipe adapter 231. The first air pressure sensor 232 is connected to the first air pipe adapter 231 and electrically connected to the control system 4, used to detect the input air pressure of the air intake pipe 21 and feed it back to the control system 4. The control system 4 compares the air pressure measured by the first air pressure sensor 232 with the set air pressure, and controls the air pressure regulating unit 24 to increase or decrease the output air pressure, so that the air pressure of the airflow flowing out of the air pressure regulating unit 24 is equal to the set air pressure, forming an open-loop regulation. The first air pipe adapter 231 can be a Y-type connector as in the prior art, to connect the inlet of the first air pressure sensor 232 and the inlet of the air intake pipe 21 in parallel to the first air pipe adapter 231.

[0031] Furthermore, the first air pressure monitoring unit 23 also includes an alarm 233, which is electrically connected to the control system 4. When the first air pressure sensor 232 detects an air pressure of 0, meaning no airflow is detected, the control system 4 controls the alarm 233 to alert the user and prevent the dental sandblasting machine from running idle and damaging the equipment. The alarm 233 can be a buzzer, LED warning light, or other similar devices as used in the prior art.

[0032] The pressure regulating unit 24 can be a prior art device for regulating air pressure. In this embodiment, the pressure regulating unit 24 includes a pressure regulating valve 241, a lead screw 242, and a motor 243. The pressure regulating valve 241 has an inlet end and an outlet end respectively. An air passage (not shown in the figure) connecting the inlet end and the outlet end is provided inside the pressure regulating valve 241, and the airflow flows along an axial direction within the pressure regulating valve 241. The inlet pipe 21 is connected to the inlet end of the pressure regulating valve 241, and the outlet pipe 22 is connected to the outlet end of the pressure regulating valve 241. A valve core (not shown in the figure) is also provided inside the pressure regulating valve 241, located within the air passage. The motor 243 is located on one side of the pressure regulating valve 241, and the extension direction of the output end of the motor 243 is perpendicular to the airflow direction within the pressure regulating valve 241. The motor 243 is electrically connected to the control system 4 and can be a stepper motor or a servo motor. In this embodiment, a servo motor is preferred, which can further improve the pressure regulation accuracy. One end of the lead screw 242 is connected to the output end of the motor 243, and the other end passes through the pressure regulating valve 241 and is connected to the valve core. When the motor 243 drives the lead screw 242 to move the valve core away from the motor 243, the ventilation area of ​​the ventilation channel corresponding to the valve core position decreases, and the air pressure of the airflow flowing out from the outlet end of the pressure regulating valve 241 increases; when the motor 243 drives the lead screw 242 to move the valve core closer to the motor 243, the ventilation area of ​​the ventilation channel corresponding to the valve core position increases, and the air pressure of the airflow flowing out from the outlet end of the pressure regulating valve 241 decreases.

[0033] Furthermore, the air pressure regulating device 2 also includes a second air pressure monitoring unit 25. The second air pressure monitoring unit 25 includes a second air pipe adapter 251 and a second air pressure sensor 252. The second air pipe adapter 251 is disposed between the air pressure regulating unit 25 and the air outlet pipe 22. The air outlet pipe 22 connects to the air outlet end of the air pressure regulating unit 24 after passing through the second air pipe adapter 251. The second air pressure sensor 252 is connected to the second air pipe adapter 251 and electrically connected to the control system 4, used to detect the output air pressure of the air outlet pipe 22 and feed it back to the control system 4. The control system 4 further adjusts the air pressure regulating unit 24 based on the difference between the air pressure measured by the second air pressure sensor 252 and the set air pressure, ensuring that the air pressure of the air outlet pipe 22 is equal to the set air pressure. The first air pressure monitoring unit 23, the air pressure regulating unit 24, and the second air pressure monitoring unit 25 form a closed-loop regulation, enabling the control system 4 to adjust the control strategy according to the actual output air pressure of the air outlet pipe 22, thereby achieving error correction and improving control accuracy. Similarly, the second air pipe adapter 251 can be a Y-type connector as in the prior art, connecting the inlet of the second air pressure sensor 252 and the inlet of the air outlet pipe 22 in parallel to the second air pipe adapter 251.

[0034] The sandblasting device 3 is used to spray dental sand powder onto the user's tooth surface. It can be a medical high-pressure air gun from the prior art, and its structure will not be described in detail here.

[0035] The control system 4 includes a control panel 41 and an information processing module 42. The control panel 41 is electrically connected to the information processing module 42 for user input of a set air pressure signal. The information processing module 42 is electrically connected to the first air pressure sensor 232, the second air pressure sensor 252, the motor 243, and the alarm 233. The information processing module 42 is pre-loaded with a control program that calculates the difference between the input air pressure in the intake pipe 21 and / or the output air pressure in the outlet pipe 22 and the set air pressure, and adjusts the pressure regulating valve 241 accordingly. The information processing module 42 compares the air pressure measured by the first air pressure sensor 232 and the second air pressure sensor 252 with the set air pressure to form a closed-loop control, and sends pulse signals to control the movement of the motor 243 to adjust the pressure regulating valve 241. In this embodiment, the information processing module 42 is a microcontroller, a PLC controller, or an ARM chip.

[0036] The working principle of the dental sandblasting machine provided by this utility model is as follows: When the dental sandblasting machine starts working, the user inputs the set air pressure through the control panel 41. The information processing module 42 first receives the air pressure signal measured by the first air pressure sensor 232 and compares it with the set air pressure. It then outputs a pulse signal to control the motor 243 to adjust the pressure regulating valve 241, increasing or decreasing the air pressure of the airflow output from the pressure regulating valve 241, so that the air pressure of the airflow output from the pressure regulating valve 241 is equal to the set air pressure. Then, the information processing module 42 receives the air pressure signal measured by the second air pressure sensor 252 and compares it with the set air pressure again. It then outputs a pulse signal to control the motor 243 to adjust the pressure regulating valve 241 again, ensuring that the air pressure of the airflow output from the pressure regulating valve 241 is equal to the set air pressure.

[0037] Compared with existing technologies, the dental air polishing machine provided by this utility model has the following advantages:

[0038] (1) By setting a first air pressure monitoring unit 23 to detect the air pressure of the air inlet pipe 21, on the one hand, the first air pressure monitoring unit 23 forms an open-loop regulation, and the control system 4 controls the pressure regulating valve 241 to adjust the output air pressure according to the difference between the output air pressure and the set air pressure, so that the output air pressure is equal to the set air pressure; on the other hand, the first air pressure unit 23 monitors whether there is airflow input to the air inlet pipe 21, and alarms are triggered by the alarm 233 when no airflow input is detected, so as to avoid the dental sandblasting machine running idle and damaging the equipment. (2) A second air pressure monitoring unit 25 is set to form a closed-loop regulation, so that the control system 4 can adjust the control strategy in time according to the actual output air pressure of the air outlet pipe 22, realize error correction, and ensure the actual output air pressure of the air outlet pipe 22.

[0039] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A dental air polishing machine, characterized in that, include: An air supply device is used to provide a high-pressure airflow to the dental sandblasting machine; A sandblasting device used to spray dental sand powder onto the user's tooth surface; An air pressure regulating device includes an air inlet pipe, an air outlet pipe, a first air pressure monitoring unit, and an air pressure regulating unit; one end of the air inlet pipe is connected to the air supply device, and the other end is connected to the air inlet end of the air pressure regulating unit; one end of the air outlet pipe is connected to the air outlet end of the air pressure regulating unit, and the other end is connected to the sandblasting device. The first air pressure monitoring unit includes a first air pressure sensor, which is disposed between the air intake pipe and the air intake end of the air pressure regulating unit, and is used to detect the input air pressure of the input airflow in the air intake pipe; The pressure regulating unit includes a pressure regulating valve. The inlet pipe and the outlet pipe are respectively connected to the inlet end and the outlet end of the pressure regulating valve. The pressure regulating valve has an air passage connecting its inlet end and the outlet end. The pressure regulating valve is used to increase or decrease the pressure of the output airflow flowing into the outlet pipe. The control system is electrically connected to the first pressure sensor and the pressure regulating valve, respectively.

2. The dental air polishing machine according to claim 1, characterized in that: It also includes a second air pressure monitoring unit; the second air pressure monitoring unit includes a second air pressure sensor, which is disposed between the air outlet pipe and the air outlet end of the air pressure regulating unit and electrically connected to the control system, for detecting the output air pressure of the output airflow in the air outlet pipe and feeding it back to the control system.

3. The dental air polishing machine according to claim 2, characterized in that: The first air pressure monitoring unit further includes a first air pipe adapter, and the second air pressure monitoring unit further includes a second air pipe adapter; The air intake pipe is connected to the air intake end of the pressure regulating valve after passing through the first air pipe adapter; the first air pressure sensor is connected in parallel to the first air pipe adapter. The air outlet pipe is connected to the air outlet of the pressure regulating valve after passing through the second air pipe adapter; the second air pressure sensor is connected in parallel to the second air pipe adapter.

4. The dental air polishing machine according to claim 3, characterized in that: The first and second tracheal adapters are Y-type connectors.

5. The dental air polishing machine according to claim 3, characterized in that: The first air pressure monitoring unit also includes an alarm, which is electrically connected to the control system.

6. The dental air polishing machine according to claim 5, characterized in that: The alarm is a buzzer or an LED warning light.

7. The dental air polishing machine according to claim 5, characterized in that: The air pressure regulating unit also includes a lead screw and a motor; the pressure regulating valve is also provided with a valve core, which is located in the air passage; one end of the lead screw is connected to the output end of the motor, and the other end is connected to the valve core; the motor is electrically connected to the control system.

8. The dental air polishing machine according to claim 7, characterized in that: The motor is a servo motor.

9. The dental sandblasting machine according to claim 7, characterized in that: The control system includes a control panel and an information processing module; the control panel is used for users to input set air pressure signals; the information processing module is electrically connected to the first air pressure sensor, the second air pressure sensor, the alarm, the motor, and the control panel.

10. The dental air polishing machine according to claim 9, characterized in that: The information processing module is a microcontroller, PLC controller, or ARM chip.

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