Dental handpiece lubricator

Abstract

To provide a dental handpiece lubricator capable of mixing oil with air efficiently.SOLUTION: A dental handpiece lubricator includes a lubricating oil transportation pipeline 10, an air transportation pipeline 20, and an atomization generator 30. The atomization generator communicates with the lubricating oil transportation pipeline and the air transportation pipeline respectively. The atomization generator includes an air acceleration structure for rapidly accelerating the air from the air transportation pipeline and forming a high-speed air stream. The atomization generator further includes an atomizing structure which atomizes the lubricating oil from the lubricating oil transportation pipeline with the high-speed air stream, forms oil mist, and discharges the mist to a dental handpiece 40. According to the dental handpiece lubricator, the lubricating oil is pulverized by the high-speed air stream into atomized particles, and the oil and the air can be sufficiently mixed, so that only a small amount of oil can generate sufficient lubrication, the environmental pollution is largely reduced, a structure is simple without using an oil pump for an oil supply system, and has a long service life.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of medical equipment, and more particularly to dental handpiece lubricators. [Background technology]

[0002] Dental handpieces are medical devices widely used in oral surgery, used for cleaning teeth and polishing damaged teeth. Dental handpiece lubricators are essential for dental handpiece maintenance. Conventional dental handpiece lubricators typically use an oil pump to draw lubricating oil into a duct and then use compressed air to supply the lubricating oil into the dental handpiece to lubricate relevant components within the dental handpiece. Alternatively, they use a multi-channel structure, where the oil is drawn into the multi-channel structure by an oil pump and ventilated through an air intake mechanism. However, these conventional lubrication methods do not adequately mix the oil and air, resulting in uneven oil inclusion in the air entering the dental handpiece. This makes it difficult to fully control the oil inclusion rate. To adequately lubricate a dental handpiece, it is usually necessary to extend the lubrication time and inject more lubricating oil, ultimately resulting in a large portion of the lubricating oil being expelled into the air. This problem is particularly pronounced when injecting lubricating oil into multiple dental handpieces, resulting in oil waste and environmental pollution. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of this, the present invention provides a dental handpiece lubricator that can efficiently mix oil and air. [Means for solving the problem]

[0004] The dental handpiece lubricator includes a lubricating oil transport pipeline, a gas transport pipeline, and an atomization generating device. The atomization generating device is connected to the lubricating oil transport pipeline and the gas transport pipeline. The atomization generating device includes a gas acceleration structure for rapidly accelerating gas from the gas transport pipeline to form an accelerated airflow. The atomization generating device further includes an atomization structure for atomizing the lubricating oil from the lubricating oil transport pipeline with the accelerated airflow to form an oil mist.

[0005] Preferably, the atomization device includes a cavity and an oil nozzle disposed within the cavity. The cavity includes a throat portion formed between an outer wall of the oil nozzle and an inner wall of the cavity, a contraction portion located upstream of the throat portion, and an expansion portion located downstream of the throat portion. The contraction portion communicates with the gas transport pipeline. The oil nozzle communicates with the lubricating oil transport pipeline. The contraction portion and the throat portion form the gas acceleration structure. The expansion portion forms the atomization structure. The sequentially connected contraction portion, throat portion, and expansion portion rapidly accelerate the gas as it flows from the contraction portion through the throat portion into the expansion portion, generating negative pressure at the end region of the oil nozzle to suck in the lubricating oil. The sucked lubricating oil is mixed with the accelerated airflow to form oil mist, which is then released into the dental handpiece.

[0006] In some embodiments, the atomization generator includes a housing and an atomization core. The cavity is disposed within the housing. The atomization core includes a body and the oil nozzle connected to one end of the body. The atomization generator further includes a gas supply passage communicating with the gas transport line and a lubricating oil supply passage communicating with the lubricating oil transport line. The gas supply passage is disposed between the body and the housing and communicates with the contracted portion. The lubricating oil supply passage passes through the body and the oil nozzle and then communicates with the expanded portion.

[0007] In some embodiments, the transition from the outer surface of the body to the outer surface of the oil nozzle is converging, i.e., the end of the body closest to the oil nozzle is conical.

[0008] In some embodiments, the portion of the inner surface of the housing corresponding to the constriction is constricted.

[0009] In some embodiments, the atomizing core further includes a connecting end connected to the other end of the main body. The connecting end is connected to a connecting nozzle by a connecting pipe. The connecting nozzle is in communication with the lubricating oil transport pipe. The lubricating oil supply passage passes through the connecting end and is in communication with a duct of the connecting pipe. The inner diameter of the duct of the connecting pipe is larger than the inner diameter of the lubricating oil supply passage.

[0010] In some embodiments, the atomization generating device further includes a valve body. The valve body includes a storage chamber and first and second openings communicating with the storage chamber. The storage chamber communicates with the gas supply passage. The gas transport pipeline communicates with the storage chamber through the first opening. The connection nozzle and connection pipe are attached to the storage chamber. One end of the connection nozzle protrudes from the second opening and is connected to the lubricating oil transport pipeline.

[0011] In some embodiments, the lubricating oil transport line is provided with a check valve to prevent backflow of the lubricating oil.

[0012] In some embodiments, the gas transport line is provided with a solenoid valve.

[0013] Preferably, the dental handpiece lubricator further includes a dispenser. The dispenser includes a plurality of output lines for connection to the plurality of dental handpieces, respectively. The mist generator further includes an atomizing nozzle. The extension portion penetrates the atomizing nozzle. The dispenser is connected to the atomizing nozzle, and the oil mist generated by the atomizing generator can be easily supplied to the plurality of dental handpieces by the dispenser.

[0014] In some embodiments, the dental handpiece lubricator further includes a base and a cover detachably attached to the base, wherein the lubricating oil transport line, the gas transport line, and the atomization generator are attached to the base and housed within the cover.

[0015] In some embodiments, the gas delivery line is provided with a solenoid valve, and the dental handpiece lubricator further includes a controller electrically connected to the solenoid valve to control opening and closing of the solenoid valve.

[0016] Compared with the prior art, the dental handpiece lubricator of the present invention has an atomizer installed inside. After the dental handpiece lubricator is started, compressed air flows into the atomizer from the constriction section through the throat section and reaches the expansion section, where it is rapidly accelerated and generates negative pressure within the atomizer, discharging the lubricating oil. The high-speed airflow breaks the lubricating oil into atomized particles, which are then sent through a duct to the dental handpiece's required lubrication locations. Because the high-speed airflow breaks the lubricating oil into atomized particles, the oil and air are thoroughly mixed, allowing for sufficient lubrication with only a small amount of oil, and enabling uniform lubrication even when multiple dental handpieces are lubricated simultaneously. The present invention has a simple structure, generates negative pressure within the atomizer to discharge the lubricating oil, and does not require an oil pump in the lubrication system. This results in a long service life, sufficient lubrication, reduced lubricating oil consumption, and significantly reduced environmental pollution. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram illustrating the principle of a dental handpiece lubricator according to an embodiment of the present invention. [Figure 2] 1 is a structural schematic diagram of a dental handpiece lubricator according to an embodiment of the present invention; [Figure 3] FIG. 3 is a structural schematic diagram of the dental handpiece lubricator shown in FIG. 2 after the outer case has been removed. [Figure 4] 4 is a cross-sectional view of the atomization generating device and the solenoid valve of the dental handpiece lubricator shown in FIG. 3. FIG. [Figure 5] FIG. 5 is an enlarged view of the atomization generating device shown in FIG. [Figure 6] FIG. 2 is a schematic diagram illustrating a connection between a controller and a solenoid valve. DETAILED DESCRIPTION OF THE INVENTION

[0018] To facilitate understanding of the present invention, the present invention will now be described more completely with reference to the accompanying drawings. In order to allow a more accurate and complete understanding of the technical solutions disclosed in the present invention, one or more embodiments of the present invention are illustrated in the accompanying drawings by way of example. It should be understood, however, that the present invention may be embodied in many different forms and is not limited to the embodiments described below.

[0019] FIG. 1 is a diagram showing the principle of a dental handpiece lubricator according to one embodiment of the present invention.

[0020] As shown in Figure 1, the dental handpiece lubricator includes a lubricating oil transport pipeline 10, a gas transport pipeline 20, and an atomization generating device 30 that is connected to the lubricating oil transport pipeline 10 and the gas transport pipeline 20. The atomization generating device 30 includes a gas acceleration structure for rapidly accelerating gas from the gas transport pipeline 20 to form an accelerated airflow. The atomization generating device 30 further includes an atomization structure for atomizing the lubricating oil from the lubricating oil transport pipeline 10 with the accelerated airflow to form an oil mist.

[0021] Specifically, the atomization device 30 includes a cavity and an oil nozzle 342 protruding into the cavity. The cavity includes a throat section 322 formed between the inner wall of the cavity and the outer wall of the oil nozzle 342, a contraction section 324 located upstream of the throat section, and an expansion section 326 located downstream of the throat section 322. The contraction section 324 communicates with the gas transport pipeline 20. The oil nozzle 342 communicates with the lubricating oil transport pipeline 10. The contraction section 324 and the throat section 322 form a gas acceleration structure. The expansion section 326 forms an atomization structure. The contraction section 324, throat section 322, and expansion section 326 are connected in order along the air flow direction, forming a rubber nozzle structure with a large space at the front end, a small space in the middle, and a large space at the rear end. This causes the gas to be rapidly accelerated as it flows from the contraction section 324 through the throat section 322 into the extension section 326, and generates negative pressure in the area near the end of the oil nozzle 342 (the area of the extension section 326 close to the end of the nozzle 342), sucking the lubricating oil from the oil nozzle 342.The lubricating oil that flows into the extension section 326 is blown away by the accelerated airflow, forming fine particles, which are then thoroughly mixed with the accelerated airflow to form an oil mist, which is then released into the dental handpiece by the extension section 326.

[0022] The cross-sectional area of the contracted portion 324 gradually decreases in the direction approaching the throat portion 322. In this embodiment, the inner wall surface of the contracted portion 324 is a conical surface.

[0023] The cross-sectional area of the expansion portion 326 is larger than that of the throat portion 322. In this embodiment, the expansion portion 326 has a cylindrical inner wall surface with a uniform inner diameter along the longitudinal direction, or a trumpet-shaped inner wall surface with a gradually increasing inner diameter in the direction away from the throat portion. The oil nozzle 342 has a cylindrical shape. The throat portion 322 has an annular cross section. Preferably, the cross-sectional area of the expansion portion 326 may be two or more times the cross-sectional area of the throat portion 322, for example, 2.5 times, 3 times, 3.5 times, 4 times, 4.5 times, 5 times, 5.5 times, 6 times, 6.5 times, 7 times, 7.5 times, 8 times, 8.5 times, 9 times, 10 times, etc.

[0024] Preferably, the dental handpiece lubricator further includes a dispenser 50. The dispenser 50 includes a plurality of output pipes 52 for connection to a plurality of dental handpieces 40, respectively, and is connected to the atomization generator 30, so that the oil mist generated by the atomization generator 30 can be easily supplied to the plurality of dental handpieces 40 by the dispenser 50. Preferably, the dental handpieces 40 are connected to the output pipes 52 of the dispenser 50 by quick couplings 42, making it easy to attach and detach the dental handpieces 40.

[0025] As shown in FIGS. 2 and 3 , the dental handpiece lubricator further includes an outer case 100. The lubricating oil transport pipeline 10, the gas transport pipeline 20, the atomizer 30, the dental handpiece 40, and the dispenser 50 are all mounted within the outer case 100. Specifically, the outer case 100 includes a base 110 and a cover 120 detachably mounted on the base 110. An accommodation space is formed between the cover 120 and the base 110. The lubricating oil transport pipeline 10, the gas transport pipeline 20, the atomizer 30, the dental handpiece 40, and the dispenser 50 are all accommodated within the accommodation space. When maintenance of the dental handpiece 40 is required, the cover 120 is opened and the dental handpiece 40 is connected to the dispenser 50 for maintenance.

[0026] As shown in FIGS. 4 and 5, the atomization generator 30 includes a housing 32 and an atomizing core 34 housed within the housing 32. A cavity 24 is provided within the housing 32. The atomizing core 34 includes a main body 344, an oil nozzle 342 located at one end of the main body 344, and a connecting end 346 located at the other end of the main body 344. The cavity 24 includes a throat portion 322 formed between the inner wall of the cavity and the outer wall of the oil nozzle 342, a contracting portion 324 located upstream of the throat portion, and an expanding portion 326 located downstream of the throat portion 322. In this specification, upstream and downstream are defined according to the fluid flow. The contracting portion 324 includes a contracting end (an end with a narrower inner diameter) close to the throat portion 322 and an opening end (an end with a larger inner diameter) away from the throat portion 322. The main body 344 is housed within the opening end of the contracting portion 324. The oil nozzle 342 penetrates the contracted end of the contracted section 324 and is then inserted into the expanded section 326. As a result, a throat section 322 is formed between the outer surface of the oil nozzle 342 and the inner surface of the housing 32, and the throat section 322 is located at the connection point between the contracted end of the contracted section 324 and the expanded section 326. The cross-sectional area of the contracted section 324 gradually decreases toward the throat section 322, and the cross-sectional area of the expanded section 326 is larger than that of the throat section 322. In this way, in the direction from the contracted section 324 to the expanded section 326, the cross-sectional area of the flow path rapidly decreases toward the throat section 322 and rapidly increases after passing through the throat section 322 (i.e., downstream of the throat section 322), thereby forming a rubber nozzle structure.

[0027] Preferably, the outer diameter of the main body 344 is larger than the outer diameters of the oil nozzle 342 and the connecting end 346, and the outer surfaces of the main body 344 and the oil nozzle 342 are connected by an inclined surface, which faces the inclined surface of the constricted end of the constricted portion 324. A gas supply passage 36 communicating with the constricted portion 324 is provided between the main body 344 and the housing 32. In this embodiment, the gas supply passage 36 is installed in the main body 344. A lubricating oil supply passage 38 is provided in the center of the atomizing core 34. The lubricating oil supply passage 38 passes through the connecting end 346, the main body 344, and the oil nozzle 342 in this order. The connecting end 346 of the atomizing core 34 is connected to the connecting nozzle 349 by a connecting pipe 348. The inner diameter of the connecting pipe 348 is larger than the inner diameter of the lubricating oil supply passage 38.

[0028] The atomization device 30 further includes a valve body 39 sealed and connected to the housing 32. The valve body 39 includes a receiving chamber 392 and first and second openings 394 and 396 communicating with the receiving chamber 392. The gas transport pipeline 20 communicates with the first opening 394. The gas supply passage 36 communicates with the receiving chamber 392 and the contracted portion 324. The connection nozzle 349 and the connection pipe 348 are mounted within the receiving chamber 392. One end of the connection nozzle 349 protrudes from the second opening 396 and communicates with the lubricating oil transport pipeline 10. Preferably, the inner diameter of the connection pipe 348 is larger than that of the connection nozzle 349, so that the connection pipe 348 can be easily fitted around the outer periphery of the connection nozzle 349.

[0029] The mist generating device 30 further includes a mist generating nozzle 35. The mist generating nozzle 35 is formed at one end of the housing 32 remote from the valve body 39. The extension portion 326 penetrates the mist generating nozzle 35. The dispenser 50 is connected to the mist generating nozzle 35 by a connecting pipe, so that the oil mist generated by the mist generating device 30 can be easily supplied to the plurality of dental handpieces 40 by the dispenser.

[0030] The dental handpiece lubricator further includes a solenoid valve 22 connected between the gas transport pipeline 20 and the atomization device 30. The opening time of the solenoid valve 22 can be adjusted as needed. Preferably, as shown in FIG. 6, a controller 80 may be further provided, electrically connected to the solenoid valve 22 to control the opening time of the solenoid valve 22. For example, for a dental handpiece with a complex structure, the controller 80 may select a mode in which the opening time of the solenoid valve 22 is long, such as 2 to 3 seconds, while for a dental handpiece with a simple structure, the controller 80 may select a mode in which the opening time of the solenoid valve 22 is short, such as 1 to 2 seconds.

[0031] The lubricating oil transport pipeline 10 is provided with a check valve 12 for preventing backflow of the lubricating oil.

[0032] The oil and air control principle of the dental handpiece lubricator is explained in detail below.

[0033] When compressed air flows into the atomizer 30 through the solenoid valve 22, it generates a negative pressure inside the atomizer 30, and the lubricating oil flows into the atomizer 30 through the check valve 12 at atmospheric pressure and mixes with the compressed air to form oil mist. The oil mist reaches the quick coupling 42 via the dispenser 50 and flows into the dental handpiece 40 to lubricate the handpiece components.

[0034] Specifically, compressed air passes through solenoid valve 22 and enters chamber 392 of atomizer 30. Then, via gas supply passage 36, it flows into constricted section 324. Because the small annular space in throat section 322 has a large front end, a small middle space, and a large rear end, when the compressed air reaches constricted section 324, the front end of the annular space, its flow velocity is low and its pressure rises. However, as it flows through throat section 322, its air velocity increases. As it flows through expansion section 326, the gas rapidly expands and increases, generating negative pressure near oil nozzle 342. Lubricating oil then flows out of oil nozzle 342 at atmospheric pressure and into atomizer 30. The lubricating oil that flows out of oil nozzle 342 is quickly blown away by the high-speed airflow, forming fine particles, which then mix with the high-speed airflow to form oil mist.

[0035] The dental handpiece lubricator of the present invention is equipped with an atomizer. After the dental handpiece lubricator is started, compressed air flows into the atomizer, rapidly accelerating as it flows from the constriction section through the throat section and the expansion section, generating negative pressure within the atomizer to expel the lubricating oil. The high-speed airflow breaks the lubricating oil into atomized particles, which are then sent through a duct to the dental handpiece where lubrication is required. Because the high-speed airflow breaks the lubricating oil into atomized particles, the oil and air are thoroughly mixed, allowing for sufficient lubrication with only a small amount of oil, and enabling uniform lubrication even when multiple dental handpieces are lubricated simultaneously. The present invention has a simple structure, generates negative pressure within the atomizer to expel the lubricating oil, and does not require an oil pump in the lubrication system. This provides a long service life for the lubricator, sufficient lubrication, and minimal lubricating oil consumption, while significantly reducing environmental pollution.

[0036] It should be noted that the present invention is not limited to the above embodiments, and according to the creative spirit of the present invention, those skilled in the art may make other modifications, and all of these modifications made according to the creative spirit of the present invention should be included in the scope of protection claimed by the present invention.

Claims

1. 1. A dental handpiece lubricator including a lubricating oil delivery line and a gas delivery line, further comprising a mist generator; the atomization generating device is connected to the lubricating oil transport pipeline and the gas transport pipeline, the atomization generator includes a gas acceleration structure for rapidly accelerating gas from the gas transport pipeline to form an accelerated airflow; The dental handpiece lubricator is characterized in that the atomization generating device further includes an atomization structure for atomizing the lubricating oil from the lubricating oil transport pipeline by the accelerated air flow to form oil mist.

2. A cavity is provided in the atomization device, and an oil nozzle is provided in the cavity; the cavity includes a throat portion formed between an outer wall of the oil nozzle and an inner wall of the cavity, a contraction portion located upstream of the throat portion, and an expansion portion located downstream of the throat portion, the contracted portion communicates with the gas transport pipeline; the oil nozzle communicates with the lubricating oil transport pipe; the contraction portion and the throat portion form the gas acceleration structure; The atomization structure is formed by the extension portion, 2. The dental handpiece lubricator according to claim 1, wherein the contraction section, throat section, and expansion section are connected in sequence, so that when the gas flows from the contraction section through the throat section and into the expansion section, the gas is suddenly accelerated and a negative pressure is generated in the end region of the oil nozzle to suck in the lubricating oil, and the sucked lubricating oil is mixed with the accelerated airflow to form an oil mist and discharged into the dental handpiece.

3. The atomization generator includes a housing and an atomization core; The cavity is located within the housing; The atomizing core includes a main body and the oil nozzle connected to one end of the main body. the atomization generating device further includes a gas supply passage communicating with the gas transport pipe and a lubricating oil supply passage communicating with the lubricating oil transport pipe, the lubricating oil supply passage passes through the main body and the oil nozzle and then communicates with the extension portion; 3. The dental handpiece lubricator according to claim 2, wherein the gas supply passage is provided on the outer periphery of the lubricating oil supply passage and communicates with the contracted portion.

4. A contracting transition occurs from the outer surface of the body to the outer surface of the oil nozzle; 4. The dental handpiece lubricator according to claim 3, wherein a portion of the inner surface of the housing corresponding to the contracted portion is contracted.

5. The atomizing core further includes a connecting end connected to the other end of the main body; The connecting end is connected to a connecting nozzle by a connecting pipe; the connecting nozzle communicates with the lubricating oil transport pipe; the lubricating oil supply passage passes through the connection end and communicates with the duct of the connection pipe; 4. The dental handpiece lubricator according to claim 3, wherein the inner diameter of the duct of the connecting pipe is larger than the inner diameter of the lubricating oil supply passage.

6. The atomization generating device further includes a valve body, a storage chamber, and a first opening and a second opening communicating with the storage chamber are provided within the valve body; the storage chamber communicates with the gas supply passage; the gas transport pipeline communicates with the storage chamber through the first opening; the connection nozzle and the connection pipe are attached to the inside of the accommodation chamber, 6. The dental handpiece lubricator according to claim 5, wherein one end of the connecting nozzle protrudes from the second opening and is connected to the lubricating oil transport pipe.

7. 7. The dental handpiece lubricator according to claim 6, wherein the lubricating oil transport line is provided with a check valve for preventing backflow of the lubricating oil.

8. further comprising a dispenser; the dispenser includes a plurality of output lines for connection to a plurality of the dental handpieces, respectively; The atomization generating device further includes an atomization nozzle; the extension portion penetrates the atomizing nozzle, The dental handpiece lubricator according to any one of claims 2 to 7, wherein the dispenser is connected to the atomizing nozzle, and the oil mist generated by the atomizing device is easily supplied to the plurality of dental handpieces by the dispenser.

9. The device further includes a base and a cover detachably attached to the base, The dental handpiece lubricator according to any one of claims 1 to 7, wherein the lubricating oil transport pipeline, the gas transport pipeline, and the atomization generating device are attached to the base and housed within the cover.

10. a solenoid valve is provided in the gas transport pipeline; 8. The dental handpiece lubricator according to claim 1, further comprising a controller electrically connected to the solenoid valve for controlling opening and closing of the solenoid valve.

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